diff options
Diffstat (limited to 'fs/afs')
43 files changed, 2004 insertions, 1969 deletions
diff --git a/fs/afs/Kconfig b/fs/afs/Kconfig index 701aaa9b1899..3fb1f559e317 100644 --- a/fs/afs/Kconfig +++ b/fs/afs/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only config AFS_FS tristate "Andrew File System support (AFS)" depends on INET diff --git a/fs/afs/Makefile b/fs/afs/Makefile index cbf31f6cd177..10359bea7070 100644 --- a/fs/afs/Makefile +++ b/fs/afs/Makefile @@ -29,7 +29,6 @@ kafs-y := \ server.o \ server_list.o \ super.o \ - netdevices.o \ vlclient.o \ vl_list.o \ vl_probe.o \ diff --git a/fs/afs/addr_list.c b/fs/afs/addr_list.c index 967db336d11a..df415c05939e 100644 --- a/fs/afs/addr_list.c +++ b/fs/afs/addr_list.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* Server address list management * * Copyright (C) 2017 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. */ #include <linux/slab.h> @@ -250,8 +246,8 @@ struct afs_vlserver_list *afs_dns_query(struct afs_cell *cell, time64_t *_expiry _enter("%s", cell->name); - ret = dns_query("afsdb", cell->name, cell->name_len, "srv=1", - &result, _expiry); + ret = dns_query(cell->net->net, "afsdb", cell->name, cell->name_len, + "srv=1", &result, _expiry, true); if (ret < 0) { _leave(" = %d [dns]", ret); return ERR_PTR(ret); diff --git a/fs/afs/afs.h b/fs/afs/afs.h index d12ffb457e47..b6d49d646ade 100644 --- a/fs/afs/afs.h +++ b/fs/afs/afs.h @@ -1,12 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* AFS common types * * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #ifndef AFS_H @@ -23,6 +19,9 @@ #define AFSPATHMAX 1024 /* Maximum length of a pathname plus NUL */ #define AFSOPAQUEMAX 1024 /* Maximum length of an opaque field */ +#define AFS_VL_MAX_LIFESPAN (120 * HZ) +#define AFS_PROBE_MAX_LIFESPAN (30 * HZ) + typedef u64 afs_volid_t; typedef u64 afs_vnodeid_t; typedef u64 afs_dataversion_t; @@ -69,8 +68,8 @@ typedef enum { struct afs_callback { time64_t expires_at; /* Time at which expires */ - unsigned version; /* Callback version */ - afs_callback_type_t type; /* Type of callback */ + //unsigned version; /* Callback version */ + //afs_callback_type_t type; /* Type of callback */ }; struct afs_callback_break { @@ -144,6 +143,15 @@ struct afs_file_status { u32 abort_code; /* Abort if bulk-fetching this failed */ }; +struct afs_status_cb { + struct afs_file_status status; + struct afs_callback callback; + unsigned int cb_break; /* Pre-op callback break counter */ + bool have_status; /* True if status record was retrieved */ + bool have_cb; /* True if cb record was retrieved */ + bool have_error; /* True if status.abort_code indicates an error */ +}; + /* * AFS file status change request */ diff --git a/fs/afs/afs_cm.h b/fs/afs/afs_cm.h index 255f5dd6040c..565cbe0a8af6 100644 --- a/fs/afs/afs_cm.h +++ b/fs/afs/afs_cm.h @@ -1,12 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* AFS Cache Manager definitions * * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #ifndef AFS_CM_H diff --git a/fs/afs/afs_fs.h b/fs/afs/afs_fs.h index 18a54ca422f8..20ab344baf9d 100644 --- a/fs/afs/afs_fs.h +++ b/fs/afs/afs_fs.h @@ -1,12 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* AFS File Service definitions * * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #ifndef AFS_FS_H diff --git a/fs/afs/afs_vl.h b/fs/afs/afs_vl.h index e3c4688f573b..e9b8029920ec 100644 --- a/fs/afs/afs_vl.h +++ b/fs/afs/afs_vl.h @@ -1,12 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* AFS Volume Location Service client interface * * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #ifndef AFS_VL_H diff --git a/fs/afs/cache.c b/fs/afs/cache.c index f6d0a21e8052..037af93e3aba 100644 --- a/fs/afs/cache.c +++ b/fs/afs/cache.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* AFS caching stuff * * Copyright (C) 2008 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/sched.h> diff --git a/fs/afs/callback.c b/fs/afs/callback.c index 128f2dbe256a..6cdd7047c809 100644 --- a/fs/afs/callback.c +++ b/fs/afs/callback.c @@ -48,7 +48,7 @@ static struct afs_cb_interest *afs_create_interest(struct afs_server *server, refcount_set(&new->usage, 1); new->sb = vnode->vfs_inode.i_sb; new->vid = vnode->volume->vid; - new->server = afs_get_server(server); + new->server = afs_get_server(server, afs_server_trace_get_new_cbi); INIT_HLIST_NODE(&new->cb_vlink); write_lock(&server->cb_break_lock); @@ -94,15 +94,15 @@ int afs_register_server_cb_interest(struct afs_vnode *vnode, struct afs_server *server = entry->server; again: - if (vnode->cb_interest && - likely(vnode->cb_interest == entry->cb_interest)) + vcbi = rcu_dereference_protected(vnode->cb_interest, + lockdep_is_held(&vnode->io_lock)); + if (vcbi && likely(vcbi == entry->cb_interest)) return 0; read_lock(&slist->lock); cbi = afs_get_cb_interest(entry->cb_interest); read_unlock(&slist->lock); - vcbi = vnode->cb_interest; if (vcbi) { if (vcbi == cbi) { afs_put_cb_interest(afs_v2net(vnode), cbi); @@ -114,8 +114,9 @@ again: */ if (cbi && vcbi->server == cbi->server) { write_seqlock(&vnode->cb_lock); - old = vnode->cb_interest; - vnode->cb_interest = cbi; + old = rcu_dereference_protected(vnode->cb_interest, + lockdep_is_held(&vnode->cb_lock.lock)); + rcu_assign_pointer(vnode->cb_interest, cbi); write_sequnlock(&vnode->cb_lock); afs_put_cb_interest(afs_v2net(vnode), old); return 0; @@ -160,8 +161,9 @@ again: */ write_seqlock(&vnode->cb_lock); - old = vnode->cb_interest; - vnode->cb_interest = cbi; + old = rcu_dereference_protected(vnode->cb_interest, + lockdep_is_held(&vnode->cb_lock.lock)); + rcu_assign_pointer(vnode->cb_interest, cbi); vnode->cb_s_break = cbi->server->cb_s_break; vnode->cb_v_break = vnode->volume->cb_v_break; clear_bit(AFS_VNODE_CB_PROMISED, &vnode->flags); @@ -191,10 +193,11 @@ void afs_put_cb_interest(struct afs_net *net, struct afs_cb_interest *cbi) vi = NULL; write_unlock(&cbi->server->cb_break_lock); - kfree(vi); - afs_put_server(net, cbi->server); + if (vi) + kfree_rcu(vi, rcu); + afs_put_server(net, cbi->server, afs_server_trace_put_cbi); } - kfree(cbi); + kfree_rcu(cbi, rcu); } } @@ -209,7 +212,7 @@ void afs_init_callback_state(struct afs_server *server) /* * actually break a callback */ -void __afs_break_callback(struct afs_vnode *vnode) +void __afs_break_callback(struct afs_vnode *vnode, enum afs_cb_break_reason reason) { _enter(""); @@ -218,21 +221,19 @@ void __afs_break_callback(struct afs_vnode *vnode) vnode->cb_break++; afs_clear_permits(vnode); - spin_lock(&vnode->lock); - - _debug("break callback"); - - if (list_empty(&vnode->granted_locks) && - !list_empty(&vnode->pending_locks)) + if (vnode->lock_state == AFS_VNODE_LOCK_WAITING_FOR_CB) afs_lock_may_be_available(vnode); - spin_unlock(&vnode->lock); + + trace_afs_cb_break(&vnode->fid, vnode->cb_break, reason, true); + } else { + trace_afs_cb_break(&vnode->fid, vnode->cb_break, reason, false); } } -void afs_break_callback(struct afs_vnode *vnode) +void afs_break_callback(struct afs_vnode *vnode, enum afs_cb_break_reason reason) { write_seqlock(&vnode->cb_lock); - __afs_break_callback(vnode); + __afs_break_callback(vnode, reason); write_sequnlock(&vnode->cb_lock); } @@ -278,9 +279,11 @@ static void afs_break_one_callback(struct afs_server *server, struct afs_super_info *as = AFS_FS_S(cbi->sb); struct afs_volume *volume = as->volume; - write_lock(&volume->cb_break_lock); + write_lock(&volume->cb_v_break_lock); volume->cb_v_break++; - write_unlock(&volume->cb_break_lock); + trace_afs_cb_break(fid, volume->cb_v_break, + afs_cb_break_for_volume_callback, false); + write_unlock(&volume->cb_v_break_lock); } else { data.volume = NULL; data.fid = *fid; @@ -288,8 +291,10 @@ static void afs_break_one_callback(struct afs_server *server, afs_iget5_test, &data); if (inode) { vnode = AFS_FS_I(inode); - afs_break_callback(vnode); + afs_break_callback(vnode, afs_cb_break_for_callback); iput(inode); + } else { + trace_afs_cb_miss(fid, afs_cb_break_for_callback); } } } diff --git a/fs/afs/cell.c b/fs/afs/cell.c index 9de46116c749..a2a87117d262 100644 --- a/fs/afs/cell.c +++ b/fs/afs/cell.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* AFS cell and server record management * * Copyright (C) 2002, 2017 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/slab.h> @@ -123,6 +119,7 @@ static struct afs_cell *afs_alloc_cell(struct afs_net *net, const char *name, unsigned int namelen, const char *addresses) { + struct afs_vlserver_list *vllist; struct afs_cell *cell; int i, ret; @@ -151,18 +148,14 @@ static struct afs_cell *afs_alloc_cell(struct afs_net *net, atomic_set(&cell->usage, 2); INIT_WORK(&cell->manager, afs_manage_cell); - cell->flags = ((1 << AFS_CELL_FL_NOT_READY) | - (1 << AFS_CELL_FL_NO_LOOKUP_YET)); INIT_LIST_HEAD(&cell->proc_volumes); rwlock_init(&cell->proc_lock); rwlock_init(&cell->vl_servers_lock); - /* Fill in the VL server list if we were given a list of addresses to - * use. + /* Provide a VL server list, filling it in if we were given a list of + * addresses to use. */ if (addresses) { - struct afs_vlserver_list *vllist; - vllist = afs_parse_text_addrs(net, addresses, strlen(addresses), ':', VL_SERVICE, AFS_VL_PORT); @@ -171,19 +164,32 @@ static struct afs_cell *afs_alloc_cell(struct afs_net *net, goto parse_failed; } - rcu_assign_pointer(cell->vl_servers, vllist); + vllist->source = DNS_RECORD_FROM_CONFIG; + vllist->status = DNS_LOOKUP_NOT_DONE; cell->dns_expiry = TIME64_MAX; - __clear_bit(AFS_CELL_FL_NO_LOOKUP_YET, &cell->flags); } else { + ret = -ENOMEM; + vllist = afs_alloc_vlserver_list(0); + if (!vllist) + goto error; + vllist->source = DNS_RECORD_UNAVAILABLE; + vllist->status = DNS_LOOKUP_NOT_DONE; cell->dns_expiry = ktime_get_real_seconds(); } + rcu_assign_pointer(cell->vl_servers, vllist); + + cell->dns_source = vllist->source; + cell->dns_status = vllist->status; + smp_store_release(&cell->dns_lookup_count, 1); /* vs source/status */ + _leave(" = %p", cell); return cell; parse_failed: if (ret == -EINVAL) printk(KERN_ERR "kAFS: bad VL server IP address\n"); +error: kfree(cell); _leave(" = %d", ret); return ERR_PTR(ret); @@ -208,6 +214,7 @@ struct afs_cell *afs_lookup_cell(struct afs_net *net, { struct afs_cell *cell, *candidate, *cursor; struct rb_node *parent, **pp; + enum afs_cell_state state; int ret, n; _enter("%s,%s", name, vllist); @@ -267,18 +274,16 @@ struct afs_cell *afs_lookup_cell(struct afs_net *net, wait_for_cell: _debug("wait_for_cell"); - ret = wait_on_bit(&cell->flags, AFS_CELL_FL_NOT_READY, TASK_INTERRUPTIBLE); - smp_rmb(); - - switch (READ_ONCE(cell->state)) { - case AFS_CELL_FAILED: + wait_var_event(&cell->state, + ({ + state = smp_load_acquire(&cell->state); /* vs error */ + state == AFS_CELL_ACTIVE || state == AFS_CELL_FAILED; + })); + + /* Check the state obtained from the wait check. */ + if (state == AFS_CELL_FAILED) { ret = cell->error; goto error; - default: - _debug("weird %u %d", cell->state, cell->error); - goto error; - case AFS_CELL_ACTIVE: - break; } _leave(" = %p [cell]", cell); @@ -360,16 +365,46 @@ int afs_cell_init(struct afs_net *net, const char *rootcell) /* * Update a cell's VL server address list from the DNS. */ -static void afs_update_cell(struct afs_cell *cell) +static int afs_update_cell(struct afs_cell *cell) { - struct afs_vlserver_list *vllist, *old; + struct afs_vlserver_list *vllist, *old = NULL, *p; unsigned int min_ttl = READ_ONCE(afs_cell_min_ttl); unsigned int max_ttl = READ_ONCE(afs_cell_max_ttl); time64_t now, expiry = 0; + int ret = 0; _enter("%s", cell->name); vllist = afs_dns_query(cell, &expiry); + if (IS_ERR(vllist)) { + ret = PTR_ERR(vllist); + + _debug("%s: fail %d", cell->name, ret); + if (ret == -ENOMEM) + goto out_wake; + + ret = -ENOMEM; + vllist = afs_alloc_vlserver_list(0); + if (!vllist) + goto out_wake; + + switch (ret) { + case -ENODATA: + case -EDESTADDRREQ: + vllist->status = DNS_LOOKUP_GOT_NOT_FOUND; + break; + case -EAGAIN: + case -ECONNREFUSED: + vllist->status = DNS_LOOKUP_GOT_TEMP_FAILURE; + break; + default: + vllist->status = DNS_LOOKUP_GOT_LOCAL_FAILURE; + break; + } + } + + _debug("%s: got list %d %d", cell->name, vllist->source, vllist->status); + cell->dns_status = vllist->status; now = ktime_get_real_seconds(); if (min_ttl > max_ttl) @@ -379,48 +414,47 @@ static void afs_update_cell(struct afs_cell *cell) else if (expiry > now + max_ttl) expiry = now + max_ttl; - if (IS_ERR(vllist)) { - switch (PTR_ERR(vllist)) { - case -ENODATA: - case -EDESTADDRREQ: + _debug("%s: status %d", cell->name, vllist->status); + if (vllist->source == DNS_RECORD_UNAVAILABLE) { + switch (vllist->status) { + case DNS_LOOKUP_GOT_NOT_FOUND: /* The DNS said that the cell does not exist or there * weren't any addresses to be had. */ - set_bit(AFS_CELL_FL_NOT_FOUND, &cell->flags); - clear_bit(AFS_CELL_FL_DNS_FAIL, &cell->flags); cell->dns_expiry = expiry; break; - case -EAGAIN: - case -ECONNREFUSED: + case DNS_LOOKUP_BAD: + case DNS_LOOKUP_GOT_LOCAL_FAILURE: + case DNS_LOOKUP_GOT_TEMP_FAILURE: + case DNS_LOOKUP_GOT_NS_FAILURE: default: - set_bit(AFS_CELL_FL_DNS_FAIL, &cell->flags); cell->dns_expiry = now + 10; break; } - - cell->error = -EDESTADDRREQ; } else { - clear_bit(AFS_CELL_FL_DNS_FAIL, &cell->flags); - clear_bit(AFS_CELL_FL_NOT_FOUND, &cell->flags); - - /* Exclusion on changing vl_addrs is achieved by a - * non-reentrant work item. - */ - old = rcu_dereference_protected(cell->vl_servers, true); - rcu_assign_pointer(cell->vl_servers, vllist); cell->dns_expiry = expiry; - - if (old) - afs_put_vlserverlist(cell->net, old); } - if (test_and_clear_bit(AFS_CELL_FL_NO_LOOKUP_YET, &cell->flags)) - wake_up_bit(&cell->flags, AFS_CELL_FL_NO_LOOKUP_YET); + /* Replace the VL server list if the new record has servers or the old + * record doesn't. + */ + write_lock(&cell->vl_servers_lock); + p = rcu_dereference_protected(cell->vl_servers, true); + if (vllist->nr_servers > 0 || p->nr_servers == 0) { + rcu_assign_pointer(cell->vl_servers, vllist); + cell->dns_source = vllist->source; + old = p; + } + write_unlock(&cell->vl_servers_lock); + afs_put_vlserverlist(cell->net, old); - now = ktime_get_real_seconds(); - afs_set_cell_timer(cell->net, cell->dns_expiry - now); - _leave(""); +out_wake: + smp_store_release(&cell->dns_lookup_count, + cell->dns_lookup_count + 1); /* vs source/status */ + wake_up_var(&cell->dns_lookup_count); + _leave(" = %d", ret); + return ret; } /* @@ -491,8 +525,7 @@ void afs_put_cell(struct afs_net *net, struct afs_cell *cell) now = ktime_get_real_seconds(); cell->last_inactive = now; expire_delay = 0; - if (!test_bit(AFS_CELL_FL_DNS_FAIL, &cell->flags) && - !test_bit(AFS_CELL_FL_NOT_FOUND, &cell->flags)) + if (cell->vl_servers->nr_servers) expire_delay = afs_cell_gc_delay; if (atomic_dec_return(&cell->usage) > 1) @@ -623,11 +656,13 @@ again: goto final_destruction; if (cell->state == AFS_CELL_FAILED) goto done; - cell->state = AFS_CELL_UNSET; + smp_store_release(&cell->state, AFS_CELL_UNSET); + wake_up_var(&cell->state); goto again; case AFS_CELL_UNSET: - cell->state = AFS_CELL_ACTIVATING; + smp_store_release(&cell->state, AFS_CELL_ACTIVATING); + wake_up_var(&cell->state); goto again; case AFS_CELL_ACTIVATING: @@ -635,28 +670,29 @@ again: if (ret < 0) goto activation_failed; - cell->state = AFS_CELL_ACTIVE; - smp_wmb(); - clear_bit(AFS_CELL_FL_NOT_READY, &cell->flags); - wake_up_bit(&cell->flags, AFS_CELL_FL_NOT_READY); + smp_store_release(&cell->state, AFS_CELL_ACTIVE); + wake_up_var(&cell->state); goto again; case AFS_CELL_ACTIVE: if (atomic_read(&cell->usage) > 1) { - time64_t now = ktime_get_real_seconds(); - if (cell->dns_expiry <= now && net->live) - afs_update_cell(cell); + if (test_and_clear_bit(AFS_CELL_FL_DO_LOOKUP, &cell->flags)) { + ret = afs_update_cell(cell); + if (ret < 0) + cell->error = ret; + } goto done; } - cell->state = AFS_CELL_DEACTIVATING; + smp_store_release(&cell->state, AFS_CELL_DEACTIVATING); + wake_up_var(&cell->state); goto again; case AFS_CELL_DEACTIVATING: - set_bit(AFS_CELL_FL_NOT_READY, &cell->flags); if (atomic_read(&cell->usage) > 1) goto reverse_deactivation; afs_deactivate_cell(net, cell); - cell->state = AFS_CELL_INACTIVE; + smp_store_release(&cell->state, AFS_CELL_INACTIVE); + wake_up_var(&cell->state); goto again; default: @@ -669,17 +705,13 @@ activation_failed: cell->error = ret; afs_deactivate_cell(net, cell); - cell->state = AFS_CELL_FAILED; - smp_wmb(); - if (test_and_clear_bit(AFS_CELL_FL_NOT_READY, &cell->flags)) - wake_up_bit(&cell->flags, AFS_CELL_FL_NOT_READY); + smp_store_release(&cell->state, AFS_CELL_FAILED); /* vs error */ + wake_up_var(&cell->state); goto again; reverse_deactivation: - cell->state = AFS_CELL_ACTIVE; - smp_wmb(); - clear_bit(AFS_CELL_FL_NOT_READY, &cell->flags); - wake_up_bit(&cell->flags, AFS_CELL_FL_NOT_READY); + smp_store_release(&cell->state, AFS_CELL_ACTIVE); + wake_up_var(&cell->state); _leave(" [deact->act]"); return; @@ -739,11 +771,16 @@ void afs_manage_cells(struct work_struct *work) } if (usage == 1) { + struct afs_vlserver_list *vllist; time64_t expire_at = cell->last_inactive; - if (!test_bit(AFS_CELL_FL_DNS_FAIL, &cell->flags) && - !test_bit(AFS_CELL_FL_NOT_FOUND, &cell->flags)) + read_lock(&cell->vl_servers_lock); + vllist = rcu_dereference_protected( + cell->vl_servers, + lockdep_is_held(&cell->vl_servers_lock)); + if (vllist->nr_servers > 0) expire_at += afs_cell_gc_delay; + read_unlock(&cell->vl_servers_lock); if (purging || expire_at <= now) sched_cell = true; else if (expire_at < next_manage) @@ -751,10 +788,8 @@ void afs_manage_cells(struct work_struct *work) } if (!purging) { - if (cell->dns_expiry <= now) + if (test_bit(AFS_CELL_FL_DO_LOOKUP, &cell->flags)) sched_cell = true; - else if (cell->dns_expiry <= next_manage) - next_manage = cell->dns_expiry; } if (sched_cell) diff --git a/fs/afs/cmservice.c b/fs/afs/cmservice.c index 748090014519..4f1b6f466ff5 100644 --- a/fs/afs/cmservice.c +++ b/fs/afs/cmservice.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* AFS Cache Manager Service * * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/module.h> @@ -213,7 +209,7 @@ static int afs_find_cm_server_by_peer(struct afs_call *call) return 0; } - call->cm_server = server; + call->server = server; return afs_record_cm_probe(call, server); } @@ -234,7 +230,7 @@ static int afs_find_cm_server_by_uuid(struct afs_call *call, return 0; } - call->cm_server = server; + call->server = server; return afs_record_cm_probe(call, server); } @@ -260,8 +256,11 @@ static void SRXAFSCB_CallBack(struct work_struct *work) * server holds up change visibility till it receives our reply so as * to maintain cache coherency. */ - if (call->cm_server) - afs_break_callbacks(call->cm_server, call->count, call->request); + if (call->server) { + trace_afs_server(call->server, atomic_read(&call->server->usage), + afs_server_trace_callback); + afs_break_callbacks(call->server, call->count, call->request); + } afs_send_empty_reply(call); afs_put_call(call); @@ -376,10 +375,10 @@ static void SRXAFSCB_InitCallBackState(struct work_struct *work) { struct afs_call *call = container_of(work, struct afs_call, work); - _enter("{%p}", call->cm_server); + _enter("{%p}", call->server); - if (call->cm_server) - afs_init_callback_state(call->cm_server); + if (call->server) + afs_init_callback_state(call->server); afs_send_empty_reply(call); afs_put_call(call); _leave(""); @@ -584,9 +583,8 @@ static int afs_deliver_cb_probe_uuid(struct afs_call *call) */ static void SRXAFSCB_TellMeAboutYourself(struct work_struct *work) { - struct afs_interface *ifs; struct afs_call *call = container_of(work, struct afs_call, work); - int loop, nifs; + int loop; struct { struct /* InterfaceAddr */ { @@ -604,19 +602,7 @@ static void SRXAFSCB_TellMeAboutYourself(struct work_struct *work) _enter(""); - nifs = 0; - ifs = kcalloc(32, sizeof(*ifs), GFP_KERNEL); - if (ifs) { - nifs = afs_get_ipv4_interfaces(call->net, ifs, 32, false); - if (nifs < 0) { - kfree(ifs); - ifs = NULL; - nifs = 0; - } - } - memset(&reply, 0, sizeof(reply)); - reply.ia.nifs = htonl(nifs); reply.ia.uuid[0] = call->net->uuid.time_low; reply.ia.uuid[1] = htonl(ntohs(call->net->uuid.time_mid)); @@ -626,15 +612,6 @@ static void SRXAFSCB_TellMeAboutYourself(struct work_struct *work) for (loop = 0; loop < 6; loop++) reply.ia.uuid[loop + 5] = htonl((s8) call->net->uuid.node[loop]); - if (ifs) { - for (loop = 0; loop < nifs; loop++) { - reply.ia.ifaddr[loop] = ifs[loop].address.s_addr; - reply.ia.netmask[loop] = ifs[loop].netmask.s_addr; - reply.ia.mtu[loop] = htonl(ifs[loop].mtu); - } - kfree(ifs); - } - reply.cap.capcount = htonl(1); reply.cap.caps[0] = htonl(AFS_CAP_ERROR_TRANSLATION); afs_send_simple_reply(call, &reply, sizeof(reply)); diff --git a/fs/afs/dir.c b/fs/afs/dir.c index 9a466be583d2..e640d67274be 100644 --- a/fs/afs/dir.c +++ b/fs/afs/dir.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* dir.c: AFS filesystem directory handling * * Copyright (C) 2002, 2018 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/kernel.h> @@ -18,6 +14,7 @@ #include <linux/sched.h> #include <linux/task_io_accounting_ops.h> #include "internal.h" +#include "afs_fs.h" #include "xdr_fs.h" static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry, @@ -102,8 +99,8 @@ struct afs_lookup_cookie { bool found; bool one_only; unsigned short nr_fids; - struct afs_file_status *statuses; - struct afs_callback *callbacks; + struct inode **inodes; + struct afs_status_cb *statuses; struct afs_fid fids[50]; }; @@ -241,8 +238,7 @@ retry: if (nr_inline > (PAGE_SIZE - sizeof(*req)) / sizeof(struct page *)) nr_inline = 0; - req = kzalloc(sizeof(*req) + sizeof(struct page *) * nr_inline, - GFP_KERNEL); + req = kzalloc(struct_size(req, array, nr_inline), GFP_KERNEL); if (!req) return ERR_PTR(-ENOMEM); @@ -638,12 +634,14 @@ static struct inode *afs_do_lookup(struct inode *dir, struct dentry *dentry, struct key *key) { struct afs_lookup_cookie *cookie; - struct afs_cb_interest *cbi = NULL; + struct afs_cb_interest *dcbi, *cbi = NULL; struct afs_super_info *as = dir->i_sb->s_fs_info; - struct afs_iget_data data; + struct afs_status_cb *scb; + struct afs_iget_data iget_data; struct afs_fs_cursor fc; - struct afs_vnode *dvnode = AFS_FS_I(dir); - struct inode *inode = NULL; + struct afs_server *server; + struct afs_vnode *dvnode = AFS_FS_I(dir), *vnode; + struct inode *inode = NULL, *ti; int ret, i; _enter("{%lu},%p{%pd},", dir->i_ino, dentry, dentry); @@ -657,10 +655,14 @@ static struct inode *afs_do_lookup(struct inode *dir, struct dentry *dentry, cookie->nr_fids = 1; /* slot 0 is saved for the fid we actually want */ read_seqlock_excl(&dvnode->cb_lock); - if (dvnode->cb_interest && - dvnode->cb_interest->server && - test_bit(AFS_SERVER_FL_NO_IBULK, &dvnode->cb_interest->server->flags)) - cookie->one_only = true; + dcbi = rcu_dereference_protected(dvnode->cb_interest, + lockdep_is_held(&dvnode->cb_lock.lock)); + if (dcbi) { + server = dcbi->server; + if (server && + test_bit(AFS_SERVER_FL_NO_IBULK, &server->flags)) + cookie->one_only = true; + } read_sequnlock_excl(&dvnode->cb_lock); for (i = 0; i < 50; i++) @@ -678,24 +680,43 @@ static struct inode *afs_do_lookup(struct inode *dir, struct dentry *dentry, goto out; /* Check to see if we already have an inode for the primary fid. */ - data.volume = dvnode->volume; - data.fid = cookie->fids[0]; - inode = ilookup5(dir->i_sb, cookie->fids[0].vnode, afs_iget5_test, &data); + iget_data.fid = cookie->fids[0]; + iget_data.volume = dvnode->volume; + iget_data.cb_v_break = dvnode->volume->cb_v_break; + iget_data.cb_s_break = 0; + inode = ilookup5(dir->i_sb, cookie->fids[0].vnode, + afs_iget5_test, &iget_data); if (inode) goto out; /* Need space for examining all the selected files */ inode = ERR_PTR(-ENOMEM); - cookie->statuses = kcalloc(cookie->nr_fids, sizeof(struct afs_file_status), - GFP_KERNEL); + cookie->statuses = kvcalloc(cookie->nr_fids, sizeof(struct afs_status_cb), + GFP_KERNEL); if (!cookie->statuses) goto out; - cookie->callbacks = kcalloc(cookie->nr_fids, sizeof(struct afs_callback), - GFP_KERNEL); - if (!cookie->callbacks) + cookie->inodes = kcalloc(cookie->nr_fids, sizeof(struct inode *), + GFP_KERNEL); + if (!cookie->inodes) goto out_s; + for (i = 1; i < cookie->nr_fids; i++) { + scb = &cookie->statuses[i]; + + /* Find any inodes that already exist and get their + * callback counters. + */ + iget_data.fid = cookie->fids[i]; + ti = ilookup5_nowait(dir->i_sb, iget_data.fid.vnode, + afs_iget5_test, &iget_data); + if (!IS_ERR_OR_NULL(ti)) { + vnode = AFS_FS_I(ti); + scb->cb_break = afs_calc_vnode_cb_break(vnode); + cookie->inodes[i] = ti; + } + } + /* Try FS.InlineBulkStatus first. Abort codes for the individual * lookups contained therein are stored in the reply without aborting * the whole operation. @@ -704,7 +725,7 @@ static struct inode *afs_do_lookup(struct inode *dir, struct dentry *dentry, goto no_inline_bulk_status; inode = ERR_PTR(-ERESTARTSYS); - if (afs_begin_vnode_operation(&fc, dvnode, key)) { + if (afs_begin_vnode_operation(&fc, dvnode, key, true)) { while (afs_select_fileserver(&fc)) { if (test_bit(AFS_SERVER_FL_NO_IBULK, &fc.cbi->server->flags)) { @@ -712,11 +733,12 @@ static struct inode *afs_do_lookup(struct inode *dir, struct dentry *dentry, fc.ac.error = -ECONNABORTED; break; } + iget_data.cb_v_break = dvnode->volume->cb_v_break; + iget_data.cb_s_break = fc.cbi->server->cb_s_break; afs_fs_inline_bulk_status(&fc, afs_v2net(dvnode), cookie->fids, cookie->statuses, - cookie->callbacks, cookie->nr_fids, NULL); } @@ -737,15 +759,16 @@ no_inline_bulk_status: * any of the lookups fails - so, for the moment, revert to * FS.FetchStatus for just the primary fid. */ - cookie->nr_fids = 1; inode = ERR_PTR(-ERESTARTSYS); - if (afs_begin_vnode_operation(&fc, dvnode, key)) { + if (afs_begin_vnode_operation(&fc, dvnode, key, true)) { while (afs_select_fileserver(&fc)) { + iget_data.cb_v_break = dvnode->volume->cb_v_break; + iget_data.cb_s_break = fc.cbi->server->cb_s_break; + scb = &cookie->statuses[0]; afs_fs_fetch_status(&fc, afs_v2net(dvnode), cookie->fids, - cookie->statuses, - cookie->callbacks, + scb, NULL); } @@ -757,26 +780,36 @@ no_inline_bulk_status: if (IS_ERR(inode)) goto out_c; - for (i = 0; i < cookie->nr_fids; i++) - cookie->statuses[i].abort_code = 0; - success: /* Turn all the files into inodes and save the first one - which is the * one we actually want. */ - if (cookie->statuses[0].abort_code != 0) - inode = ERR_PTR(afs_abort_to_error(cookie->statuses[0].abort_code)); + scb = &cookie->statuses[0]; + if (scb->status.abort_code != 0) + inode = ERR_PTR(afs_abort_to_error(scb->status.abort_code)); for (i = 0; i < cookie->nr_fids; i++) { - struct inode *ti; + struct afs_status_cb *scb = &cookie->statuses[i]; + + if (!scb->have_status && !scb->have_error) + continue; - if (cookie->statuses[i].abort_code != 0) + if (cookie->inodes[i]) { + afs_vnode_commit_status(&fc, AFS_FS_I(cookie->inodes[i]), + scb->cb_break, NULL, scb); + continue; + } + + if (scb->status.abort_code != 0) continue; - ti = afs_iget(dir->i_sb, key, &cookie->fids[i], - &cookie->statuses[i], - &cookie->callbacks[i], - cbi, dvnode); + iget_data.fid = cookie->fids[i]; + ti = afs_iget(dir->i_sb, key, &iget_data, scb, cbi, dvnode); + if (!IS_ERR(ti)) + afs_cache_permit(AFS_FS_I(ti), key, + 0 /* Assume vnode->cb_break is 0 */ + + iget_data.cb_v_break, + scb); if (i == 0) { inode = ti; } else { @@ -787,9 +820,13 @@ success: out_c: afs_put_cb_interest(afs_v2net(dvnode), cbi); - kfree(cookie->callbacks); + if (cookie->inodes) { + for (i = 0; i < cookie->nr_fids; i++) + iput(cookie->inodes[i]); + kfree(cookie->inodes); + } out_s: - kfree(cookie->statuses); + kvfree(cookie->statuses); out: kfree(cookie); return inode; @@ -1114,9 +1151,8 @@ void afs_d_release(struct dentry *dentry) */ static void afs_vnode_new_inode(struct afs_fs_cursor *fc, struct dentry *new_dentry, - struct afs_fid *newfid, - struct afs_file_status *newstatus, - struct afs_callback *newcb) + struct afs_iget_data *new_data, + struct afs_status_cb *new_scb) { struct afs_vnode *vnode; struct inode *inode; @@ -1125,7 +1161,7 @@ static void afs_vnode_new_inode(struct afs_fs_cursor *fc, return; inode = afs_iget(fc->vnode->vfs_inode.i_sb, fc->key, - newfid, newstatus, newcb, fc->cbi, fc->vnode); + new_data, new_scb, fc->cbi, fc->vnode); if (IS_ERR(inode)) { /* ENOMEM or EINTR at a really inconvenient time - just abandon * the new directory on the server. @@ -1136,22 +1172,29 @@ static void afs_vnode_new_inode(struct afs_fs_cursor *fc, vnode = AFS_FS_I(inode); set_bit(AFS_VNODE_NEW_CONTENT, &vnode->flags); - afs_vnode_commit_status(fc, vnode, 0); + if (fc->ac.error == 0) + afs_cache_permit(vnode, fc->key, vnode->cb_break, new_scb); d_instantiate(new_dentry, inode); } +static void afs_prep_for_new_inode(struct afs_fs_cursor *fc, + struct afs_iget_data *iget_data) +{ + iget_data->volume = fc->vnode->volume; + iget_data->cb_v_break = fc->vnode->volume->cb_v_break; + iget_data->cb_s_break = fc->cbi->server->cb_s_break; +} + /* * create a directory on an AFS filesystem */ static int afs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) { - struct afs_file_status newstatus; + struct afs_iget_data iget_data; + struct afs_status_cb *scb; struct afs_fs_cursor fc; - struct afs_callback newcb; struct afs_vnode *dvnode = AFS_FS_I(dir); - struct afs_fid newfid; struct key *key; - u64 data_version = dvnode->status.data_version; int ret; mode |= S_IFDIR; @@ -1159,23 +1202,32 @@ static int afs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) _enter("{%llx:%llu},{%pd},%ho", dvnode->fid.vid, dvnode->fid.vnode, dentry, mode); + ret = -ENOMEM; + scb = kcalloc(2, sizeof(struct afs_status_cb), GFP_KERNEL); + if (!scb) + goto error; + key = afs_request_key(dvnode->volume->cell); if (IS_ERR(key)) { ret = PTR_ERR(key); - goto error; + goto error_scb; } ret = -ERESTARTSYS; - if (afs_begin_vnode_operation(&fc, dvnode, key)) { + if (afs_begin_vnode_operation(&fc, dvnode, key, true)) { + afs_dataversion_t data_version = dvnode->status.data_version + 1; + while (afs_select_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(dvnode); - afs_fs_create(&fc, dentry->d_name.name, mode, data_version, - &newfid, &newstatus, &newcb); + afs_prep_for_new_inode(&fc, &iget_data); + afs_fs_create(&fc, dentry->d_name.name, mode, + &scb[0], &iget_data.fid, &scb[1]); } - afs_check_for_remote_deletion(&fc, fc.vnode); - afs_vnode_commit_status(&fc, dvnode, fc.cb_break); - afs_vnode_new_inode(&fc, dentry, &newfid, &newstatus, &newcb); + afs_check_for_remote_deletion(&fc, dvnode); + afs_vnode_commit_status(&fc, dvnode, fc.cb_break, + &data_version, &scb[0]); + afs_vnode_new_inode(&fc, dentry, &iget_data, &scb[1]); ret = afs_end_vnode_operation(&fc); if (ret < 0) goto error_key; @@ -1185,15 +1237,18 @@ static int afs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) if (ret == 0 && test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags)) - afs_edit_dir_add(dvnode, &dentry->d_name, &newfid, + afs_edit_dir_add(dvnode, &dentry->d_name, &iget_data.fid, afs_edit_dir_for_create); key_put(key); + kfree(scb); _leave(" = 0"); return 0; error_key: key_put(key); +error_scb: + kfree(scb); error: d_drop(dentry); _leave(" = %d", ret); @@ -1220,15 +1275,19 @@ static void afs_dir_remove_subdir(struct dentry *dentry) */ static int afs_rmdir(struct inode *dir, struct dentry *dentry) { + struct afs_status_cb *scb; struct afs_fs_cursor fc; struct afs_vnode *dvnode = AFS_FS_I(dir), *vnode = NULL; struct key *key; - u64 data_version = dvnode->status.data_version; int ret; _enter("{%llx:%llu},{%pd}", dvnode->fid.vid, dvnode->fid.vnode, dentry); + scb = kzalloc(sizeof(struct afs_status_cb), GFP_KERNEL); + if (!scb) + return -ENOMEM; + key = afs_request_key(dvnode->volume->cell); if (IS_ERR(key)) { ret = PTR_ERR(key); @@ -1250,14 +1309,16 @@ static int afs_rmdir(struct inode *dir, struct dentry *dentry) } ret = -ERESTARTSYS; - if (afs_begin_vnode_operation(&fc, dvnode, key)) { + if (afs_begin_vnode_operation(&fc, dvnode, key, true)) { + afs_dataversion_t data_version = dvnode->status.data_version + 1; + while (afs_select_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(dvnode); - afs_fs_remove(&fc, vnode, dentry->d_name.name, true, - data_version); + afs_fs_remove(&fc, vnode, dentry->d_name.name, true, scb); } - afs_vnode_commit_status(&fc, dvnode, fc.cb_break); + afs_vnode_commit_status(&fc, dvnode, fc.cb_break, + &data_version, scb); ret = afs_end_vnode_operation(&fc); if (ret == 0) { afs_dir_remove_subdir(dentry); @@ -1272,6 +1333,7 @@ static int afs_rmdir(struct inode *dir, struct dentry *dentry) error_key: key_put(key); error: + kfree(scb); return ret; } @@ -1285,32 +1347,27 @@ error: * However, if we didn't have a callback promise outstanding, or it was * outstanding on a different server, then it won't break it either... */ -int afs_dir_remove_link(struct dentry *dentry, struct key *key, - unsigned long d_version_before, - unsigned long d_version_after) +static int afs_dir_remove_link(struct afs_vnode *dvnode, struct dentry *dentry, + struct key *key) { - bool dir_valid; int ret = 0; - /* There were no intervening changes on the server if the version - * number we got back was incremented by exactly 1. - */ - dir_valid = (d_version_after == d_version_before + 1); - if (d_really_is_positive(dentry)) { struct afs_vnode *vnode = AFS_FS_I(d_inode(dentry)); if (test_bit(AFS_VNODE_DELETED, &vnode->flags)) { /* Already done */ - } else if (dir_valid) { + } else if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags)) { + write_seqlock(&vnode->cb_lock); drop_nlink(&vnode->vfs_inode); if (vnode->vfs_inode.i_nlink == 0) { set_bit(AFS_VNODE_DELETED, &vnode->flags); - clear_bit(AFS_VNODE_CB_PROMISED, &vnode->flags); + __afs_break_callback(vnode, afs_cb_break_for_unlink); } + write_sequnlock(&vnode->cb_lock); ret = 0; } else { - clear_bit(AFS_VNODE_CB_PROMISED, &vnode->flags); + afs_break_callback(vnode, afs_cb_break_for_unlink); if (test_bit(AFS_VNODE_DELETED, &vnode->flags)) kdebug("AFS_VNODE_DELETED"); @@ -1331,11 +1388,11 @@ int afs_dir_remove_link(struct dentry *dentry, struct key *key, static int afs_unlink(struct inode *dir, struct dentry *dentry) { struct afs_fs_cursor fc; - struct afs_vnode *dvnode = AFS_FS_I(dir), *vnode = NULL; + struct afs_status_cb *scb; + struct afs_vnode *dvnode = AFS_FS_I(dir); + struct afs_vnode *vnode = AFS_FS_I(d_inode(dentry)); struct key *key; - unsigned long d_version = (unsigned long)dentry->d_fsdata; bool need_rehash = false; - u64 data_version = dvnode->status.data_version; int ret; _enter("{%llx:%llu},{%pd}", @@ -1344,22 +1401,24 @@ static int afs_unlink(struct inode *dir, struct dentry *dentry) if (dentry->d_name.len >= AFSNAMEMAX) return -ENAMETOOLONG; + ret = -ENOMEM; + scb = kcalloc(2, sizeof(struct afs_status_cb), GFP_KERNEL); + if (!scb) + goto error; + key = afs_request_key(dvnode->volume->cell); if (IS_ERR(key)) { ret = PTR_ERR(key); - goto error; + goto error_scb; } /* Try to make sure we have a callback promise on the victim. */ - if (d_really_is_positive(dentry)) { - vnode = AFS_FS_I(d_inode(dentry)); - ret = afs_validate(vnode, key); - if (ret < 0) - goto error_key; - } + ret = afs_validate(vnode, key); + if (ret < 0) + goto error_key; spin_lock(&dentry->d_lock); - if (vnode && d_count(dentry) > 1) { + if (d_count(dentry) > 1) { spin_unlock(&dentry->d_lock); /* Start asynchronous writeout of the inode */ write_inode_now(d_inode(dentry), 0); @@ -1374,30 +1433,34 @@ static int afs_unlink(struct inode *dir, struct dentry *dentry) spin_unlock(&dentry->d_lock); ret = -ERESTARTSYS; - if (afs_begin_vnode_operation(&fc, dvnode, key)) { + if (afs_begin_vnode_operation(&fc, dvnode, key, true)) { + afs_dataversion_t data_version = dvnode->status.data_version + 1; + afs_dataversion_t data_version_2 = vnode->status.data_version; + while (afs_select_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(dvnode); + fc.cb_break_2 = afs_calc_vnode_cb_break(vnode); if (test_bit(AFS_SERVER_FL_IS_YFS, &fc.cbi->server->flags) && !test_bit(AFS_SERVER_FL_NO_RM2, &fc.cbi->server->flags)) { yfs_fs_remove_file2(&fc, vnode, dentry->d_name.name, - data_version); + &scb[0], &scb[1]); if (fc.ac.error != -ECONNABORTED || fc.ac.abort_code != RXGEN_OPCODE) continue; set_bit(AFS_SERVER_FL_NO_RM2, &fc.cbi->server->flags); } - afs_fs_remove(&fc, vnode, dentry->d_name.name, false, - data_version); + afs_fs_remove(&fc, vnode, dentry->d_name.name, false, &scb[0]); } - afs_vnode_commit_status(&fc, dvnode, fc.cb_break); + afs_vnode_commit_status(&fc, dvnode, fc.cb_break, + &data_version, &scb[0]); + afs_vnode_commit_status(&fc, vnode, fc.cb_break_2, + &data_version_2, &scb[1]); ret = afs_end_vnode_operation(&fc); - if (ret == 0) - ret = afs_dir_remove_link( - dentry, key, d_version, - (unsigned long)dvnode->status.data_version); + if (ret == 0 && !(scb[1].have_status || scb[1].have_error)) + ret = afs_dir_remove_link(dvnode, dentry, key); if (ret == 0 && test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags)) afs_edit_dir_remove(dvnode, &dentry->d_name, @@ -1409,6 +1472,8 @@ static int afs_unlink(struct inode *dir, struct dentry *dentry) error_key: key_put(key); +error_scb: + kfree(scb); error: _leave(" = %d", ret); return ret; @@ -1420,13 +1485,11 @@ error: static int afs_create(struct inode *dir, struct dentry *dentry, umode_t mode, bool excl) { + struct afs_iget_data iget_data; struct afs_fs_cursor fc; - struct afs_file_status newstatus; - struct afs_callback newcb; + struct afs_status_cb *scb; struct afs_vnode *dvnode = AFS_FS_I(dir); - struct afs_fid newfid; struct key *key; - u64 data_version = dvnode->status.data_version; int ret; mode |= S_IFREG; @@ -1444,17 +1507,26 @@ static int afs_create(struct inode *dir, struct dentry *dentry, umode_t mode, goto error; } + ret = -ENOMEM; + scb = kcalloc(2, sizeof(struct afs_status_cb), GFP_KERNEL); + if (!scb) + goto error_scb; + ret = -ERESTARTSYS; - if (afs_begin_vnode_operation(&fc, dvnode, key)) { + if (afs_begin_vnode_operation(&fc, dvnode, key, true)) { + afs_dataversion_t data_version = dvnode->status.data_version + 1; + while (afs_select_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(dvnode); - afs_fs_create(&fc, dentry->d_name.name, mode, data_version, - &newfid, &newstatus, &newcb); + afs_prep_for_new_inode(&fc, &iget_data); + afs_fs_create(&fc, dentry->d_name.name, mode, + &scb[0], &iget_data.fid, &scb[1]); } - afs_check_for_remote_deletion(&fc, fc.vnode); - afs_vnode_commit_status(&fc, dvnode, fc.cb_break); - afs_vnode_new_inode(&fc, dentry, &newfid, &newstatus, &newcb); + afs_check_for_remote_deletion(&fc, dvnode); + afs_vnode_commit_status(&fc, dvnode, fc.cb_break, + &data_version, &scb[0]); + afs_vnode_new_inode(&fc, dentry, &iget_data, &scb[1]); ret = afs_end_vnode_operation(&fc); if (ret < 0) goto error_key; @@ -1463,13 +1535,16 @@ static int afs_create(struct inode *dir, struct dentry *dentry, umode_t mode, } if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags)) - afs_edit_dir_add(dvnode, &dentry->d_name, &newfid, + afs_edit_dir_add(dvnode, &dentry->d_name, &iget_data.fid, afs_edit_dir_for_create); + kfree(scb); key_put(key); _leave(" = 0"); return 0; +error_scb: + kfree(scb); error_key: key_put(key); error: @@ -1485,15 +1560,12 @@ static int afs_link(struct dentry *from, struct inode *dir, struct dentry *dentry) { struct afs_fs_cursor fc; - struct afs_vnode *dvnode, *vnode; + struct afs_status_cb *scb; + struct afs_vnode *dvnode = AFS_FS_I(dir); + struct afs_vnode *vnode = AFS_FS_I(d_inode(from)); struct key *key; - u64 data_version; int ret; - vnode = AFS_FS_I(d_inode(from)); - dvnode = AFS_FS_I(dir); - data_version = dvnode->status.data_version; - _enter("{%llx:%llu},{%llx:%llu},{%pd}", vnode->fid.vid, vnode->fid.vnode, dvnode->fid.vid, dvnode->fid.vnode, @@ -1503,14 +1575,21 @@ static int afs_link(struct dentry *from, struct inode *dir, if (dentry->d_name.len >= AFSNAMEMAX) goto error; + ret = -ENOMEM; + scb = kcalloc(2, sizeof(struct afs_status_cb), GFP_KERNEL); + if (!scb) + goto error; + key = afs_request_key(dvnode->volume->cell); if (IS_ERR(key)) { ret = PTR_ERR(key); - goto error; + goto error_scb; } ret = -ERESTARTSYS; - if (afs_begin_vnode_operation(&fc, dvnode, key)) { + if (afs_begin_vnode_operation(&fc, dvnode, key, true)) { + afs_dataversion_t data_version = dvnode->status.data_version + 1; + if (mutex_lock_interruptible_nested(&vnode->io_lock, 1) < 0) { afs_end_vnode_operation(&fc); goto error_key; @@ -1519,11 +1598,14 @@ static int afs_link(struct dentry *from, struct inode *dir, while (afs_select_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(dvnode); fc.cb_break_2 = afs_calc_vnode_cb_break(vnode); - afs_fs_link(&fc, vnode, dentry->d_name.name, data_version); + afs_fs_link(&fc, vnode, dentry->d_name.name, + &scb[0], &scb[1]); } - afs_vnode_commit_status(&fc, dvnode, fc.cb_break); - afs_vnode_commit_status(&fc, vnode, fc.cb_break_2); + afs_vnode_commit_status(&fc, dvnode, fc.cb_break, + &data_version, &scb[0]); + afs_vnode_commit_status(&fc, vnode, fc.cb_break_2, + NULL, &scb[1]); ihold(&vnode->vfs_inode); d_instantiate(dentry, &vnode->vfs_inode); @@ -1540,11 +1622,14 @@ static int afs_link(struct dentry *from, struct inode *dir, afs_edit_dir_for_link); key_put(key); + kfree(scb); _leave(" = 0"); return 0; error_key: key_put(key); +error_scb: + kfree(scb); error: d_drop(dentry); _leave(" = %d", ret); @@ -1557,12 +1642,11 @@ error: static int afs_symlink(struct inode *dir, struct dentry *dentry, const char *content) { + struct afs_iget_data iget_data; struct afs_fs_cursor fc; - struct afs_file_status newstatus; + struct afs_status_cb *scb; struct afs_vnode *dvnode = AFS_FS_I(dir); - struct afs_fid newfid; struct key *key; - u64 data_version = dvnode->status.data_version; int ret; _enter("{%llx:%llu},{%pd},%s", @@ -1577,24 +1661,32 @@ static int afs_symlink(struct inode *dir, struct dentry *dentry, if (strlen(content) >= AFSPATHMAX) goto error; + ret = -ENOMEM; + scb = kcalloc(2, sizeof(struct afs_status_cb), GFP_KERNEL); + if (!scb) + goto error; + key = afs_request_key(dvnode->volume->cell); if (IS_ERR(key)) { ret = PTR_ERR(key); - goto error; + goto error_scb; } ret = -ERESTARTSYS; - if (afs_begin_vnode_operation(&fc, dvnode, key)) { + if (afs_begin_vnode_operation(&fc, dvnode, key, true)) { + afs_dataversion_t data_version = dvnode->status.data_version + 1; + while (afs_select_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(dvnode); - afs_fs_symlink(&fc, dentry->d_name.name, - content, data_version, - &newfid, &newstatus); + afs_prep_for_new_inode(&fc, &iget_data); + afs_fs_symlink(&fc, dentry->d_name.name, content, + &scb[0], &iget_data.fid, &scb[1]); } - afs_check_for_remote_deletion(&fc, fc.vnode); - afs_vnode_commit_status(&fc, dvnode, fc.cb_break); - afs_vnode_new_inode(&fc, dentry, &newfid, &newstatus, NULL); + afs_check_for_remote_deletion(&fc, dvnode); + afs_vnode_commit_status(&fc, dvnode, fc.cb_break, + &data_version, &scb[0]); + afs_vnode_new_inode(&fc, dentry, &iget_data, &scb[1]); ret = afs_end_vnode_operation(&fc); if (ret < 0) goto error_key; @@ -1603,15 +1695,18 @@ static int afs_symlink(struct inode *dir, struct dentry *dentry, } if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags)) - afs_edit_dir_add(dvnode, &dentry->d_name, &newfid, + afs_edit_dir_add(dvnode, &dentry->d_name, &iget_data.fid, afs_edit_dir_for_symlink); key_put(key); + kfree(scb); _leave(" = 0"); return 0; error_key: key_put(key); +error_scb: + kfree(scb); error: d_drop(dentry); _leave(" = %d", ret); @@ -1626,11 +1721,11 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry, unsigned int flags) { struct afs_fs_cursor fc; + struct afs_status_cb *scb; struct afs_vnode *orig_dvnode, *new_dvnode, *vnode; struct dentry *tmp = NULL, *rehash = NULL; struct inode *new_inode; struct key *key; - u64 orig_data_version, new_data_version; bool new_negative = d_is_negative(new_dentry); int ret; @@ -1644,8 +1739,6 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry, vnode = AFS_FS_I(d_inode(old_dentry)); orig_dvnode = AFS_FS_I(old_dir); new_dvnode = AFS_FS_I(new_dir); - orig_data_version = orig_dvnode->status.data_version; - new_data_version = new_dvnode->status.data_version; _enter("{%llx:%llu},{%llx:%llu},{%llx:%llu},{%pd}", orig_dvnode->fid.vid, orig_dvnode->fid.vnode, @@ -1653,10 +1746,15 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry, new_dvnode->fid.vid, new_dvnode->fid.vnode, new_dentry); + ret = -ENOMEM; + scb = kcalloc(2, sizeof(struct afs_status_cb), GFP_KERNEL); + if (!scb) + goto error; + key = afs_request_key(orig_dvnode->volume->cell); if (IS_ERR(key)) { ret = PTR_ERR(key); - goto error; + goto error_scb; } /* For non-directories, check whether the target is busy and if so, @@ -1690,31 +1788,43 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry, new_dentry = tmp; rehash = NULL; new_negative = true; - orig_data_version = orig_dvnode->status.data_version; - new_data_version = new_dvnode->status.data_version; } } ret = -ERESTARTSYS; - if (afs_begin_vnode_operation(&fc, orig_dvnode, key)) { + if (afs_begin_vnode_operation(&fc, orig_dvnode, key, true)) { + afs_dataversion_t orig_data_version; + afs_dataversion_t new_data_version; + struct afs_status_cb *new_scb = &scb[1]; + + orig_data_version = orig_dvnode->status.data_version + 1; + if (orig_dvnode != new_dvnode) { if (mutex_lock_interruptible_nested(&new_dvnode->io_lock, 1) < 0) { afs_end_vnode_operation(&fc); goto error_rehash; } + new_data_version = new_dvnode->status.data_version; + } else { + new_data_version = orig_data_version; + new_scb = &scb[0]; } + while (afs_select_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(orig_dvnode); fc.cb_break_2 = afs_calc_vnode_cb_break(new_dvnode); afs_fs_rename(&fc, old_dentry->d_name.name, new_dvnode, new_dentry->d_name.name, - orig_data_version, new_data_version); + &scb[0], new_scb); } - afs_vnode_commit_status(&fc, orig_dvnode, fc.cb_break); - afs_vnode_commit_status(&fc, new_dvnode, fc.cb_break_2); - if (orig_dvnode != new_dvnode) + afs_vnode_commit_status(&fc, orig_dvnode, fc.cb_break, + &orig_data_version, &scb[0]); + if (new_dvnode != orig_dvnode) { + afs_vnode_commit_status(&fc, new_dvnode, fc.cb_break_2, + &new_data_version, &scb[1]); mutex_unlock(&new_dvnode->io_lock); + } ret = afs_end_vnode_operation(&fc); if (ret < 0) goto error_rehash; @@ -1754,6 +1864,8 @@ error_tmp: if (tmp) dput(tmp); key_put(key); +error_scb: + kfree(scb); error: _leave(" = %d", ret); return ret; diff --git a/fs/afs/dir_edit.c b/fs/afs/dir_edit.c index 8b400f5aead5..d4fbe5f85f1b 100644 --- a/fs/afs/dir_edit.c +++ b/fs/afs/dir_edit.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* AFS filesystem directory editing * * Copyright (C) 2018 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. */ #include <linux/kernel.h> diff --git a/fs/afs/dir_silly.c b/fs/afs/dir_silly.c index f6f89fdab6b2..361088a5edb9 100644 --- a/fs/afs/dir_silly.c +++ b/fs/afs/dir_silly.c @@ -1,13 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* AFS silly rename handling * * Copyright (C) 2019 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * - Derived from NFS's sillyrename. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. */ #include <linux/kernel.h> @@ -24,21 +20,28 @@ static int afs_do_silly_rename(struct afs_vnode *dvnode, struct afs_vnode *vnode struct key *key) { struct afs_fs_cursor fc; - u64 dir_data_version = dvnode->status.data_version; + struct afs_status_cb *scb; int ret = -ERESTARTSYS; _enter("%pd,%pd", old, new); + scb = kzalloc(sizeof(struct afs_status_cb), GFP_KERNEL); + if (!scb) + return -ENOMEM; + trace_afs_silly_rename(vnode, false); - if (afs_begin_vnode_operation(&fc, dvnode, key)) { + if (afs_begin_vnode_operation(&fc, dvnode, key, true)) { + afs_dataversion_t dir_data_version = dvnode->status.data_version + 1; + while (afs_select_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(dvnode); afs_fs_rename(&fc, old->d_name.name, dvnode, new->d_name.name, - dir_data_version, dir_data_version); + scb, scb); } - afs_vnode_commit_status(&fc, dvnode, fc.cb_break); + afs_vnode_commit_status(&fc, dvnode, fc.cb_break, + &dir_data_version, scb); ret = afs_end_vnode_operation(&fc); } @@ -57,13 +60,9 @@ static int afs_do_silly_rename(struct afs_vnode *dvnode, struct afs_vnode *vnode if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags)) afs_edit_dir_add(dvnode, &new->d_name, &vnode->fid, afs_edit_dir_for_silly_1); - - /* vfs_unlink and the like do not issue this when a file is - * sillyrenamed, so do it here. - */ - fsnotify_nameremove(old, 0); } + kfree(scb); _leave(" = %d", ret); return ret; } @@ -143,31 +142,37 @@ static int afs_do_silly_unlink(struct afs_vnode *dvnode, struct afs_vnode *vnode struct dentry *dentry, struct key *key) { struct afs_fs_cursor fc; - u64 dir_data_version = dvnode->status.data_version; + struct afs_status_cb *scb; int ret = -ERESTARTSYS; _enter(""); + scb = kcalloc(2, sizeof(struct afs_status_cb), GFP_KERNEL); + if (!scb) + return -ENOMEM; + trace_afs_silly_rename(vnode, true); - if (afs_begin_vnode_operation(&fc, dvnode, key)) { + if (afs_begin_vnode_operation(&fc, dvnode, key, false)) { + afs_dataversion_t dir_data_version = dvnode->status.data_version + 1; + while (afs_select_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(dvnode); if (test_bit(AFS_SERVER_FL_IS_YFS, &fc.cbi->server->flags) && !test_bit(AFS_SERVER_FL_NO_RM2, &fc.cbi->server->flags)) { yfs_fs_remove_file2(&fc, vnode, dentry->d_name.name, - dir_data_version); + &scb[0], &scb[1]); if (fc.ac.error != -ECONNABORTED || fc.ac.abort_code != RXGEN_OPCODE) continue; set_bit(AFS_SERVER_FL_NO_RM2, &fc.cbi->server->flags); } - afs_fs_remove(&fc, vnode, dentry->d_name.name, false, - dir_data_version); + afs_fs_remove(&fc, vnode, dentry->d_name.name, false, &scb[0]); } - afs_vnode_commit_status(&fc, dvnode, fc.cb_break); + afs_vnode_commit_status(&fc, dvnode, fc.cb_break, + &dir_data_version, &scb[0]); ret = afs_end_vnode_operation(&fc); if (ret == 0) { drop_nlink(&vnode->vfs_inode); @@ -182,6 +187,7 @@ static int afs_do_silly_unlink(struct afs_vnode *dvnode, struct afs_vnode *vnode afs_edit_dir_for_unlink); } + kfree(scb); _leave(" = %d", ret); return ret; } diff --git a/fs/afs/dynroot.c b/fs/afs/dynroot.c index a9ba81ddf154..bcd1bafb0278 100644 --- a/fs/afs/dynroot.c +++ b/fs/afs/dynroot.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* AFS dynamic root handling * * Copyright (C) 2018 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. */ #include <linux/fs.h> @@ -28,6 +24,7 @@ const struct file_operations afs_dynroot_file_operations = { static int afs_probe_cell_name(struct dentry *dentry) { struct afs_cell *cell; + struct afs_net *net = afs_d2net(dentry); const char *name = dentry->d_name.name; size_t len = dentry->d_name.len; int ret; @@ -40,13 +37,14 @@ static int afs_probe_cell_name(struct dentry *dentry) len--; } - cell = afs_lookup_cell_rcu(afs_d2net(dentry), name, len); + cell = afs_lookup_cell_rcu(net, name, len); if (!IS_ERR(cell)) { - afs_put_cell(afs_d2net(dentry), cell); + afs_put_cell(net, cell); return 0; } - ret = dns_query("afsdb", name, len, "srv=1", NULL, NULL); + ret = dns_query(net->net, "afsdb", name, len, "srv=1", + NULL, NULL, false); if (ret == -ENODATA) ret = -EDESTADDRREQ; return ret; @@ -261,8 +259,7 @@ int afs_dynroot_populate(struct super_block *sb) struct afs_net *net = afs_sb2net(sb); int ret; - if (mutex_lock_interruptible(&net->proc_cells_lock) < 0) - return -ERESTARTSYS; + mutex_lock(&net->proc_cells_lock); net->dynroot_sb = sb; hlist_for_each_entry(cell, &net->proc_cells, proc_link) { diff --git a/fs/afs/file.c b/fs/afs/file.c index e8d6619890a9..56b69576274d 100644 --- a/fs/afs/file.c +++ b/fs/afs/file.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* AFS filesystem file handling * * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/kernel.h> @@ -170,11 +166,12 @@ int afs_release(struct inode *inode, struct file *file) { struct afs_vnode *vnode = AFS_FS_I(inode); struct afs_file *af = file->private_data; + int ret = 0; _enter("{%llx:%llu},", vnode->fid.vid, vnode->fid.vnode); if ((file->f_mode & FMODE_WRITE)) - return vfs_fsync(file, 0); + ret = vfs_fsync(file, 0); file->private_data = NULL; if (af->wb) @@ -182,8 +179,8 @@ int afs_release(struct inode *inode, struct file *file) key_put(af->key); kfree(af); afs_prune_wb_keys(vnode); - _leave(" = 0"); - return 0; + _leave(" = %d", ret); + return ret; } /* @@ -227,6 +224,7 @@ static void afs_file_readpage_read_complete(struct page *page, int afs_fetch_data(struct afs_vnode *vnode, struct key *key, struct afs_read *desc) { struct afs_fs_cursor fc; + struct afs_status_cb *scb; int ret; _enter("%s{%llx:%llu.%u},%x,,,", @@ -236,15 +234,22 @@ int afs_fetch_data(struct afs_vnode *vnode, struct key *key, struct afs_read *de vnode->fid.unique, key_serial(key)); + scb = kzalloc(sizeof(struct afs_status_cb), GFP_KERNEL); + if (!scb) + return -ENOMEM; + ret = -ERESTARTSYS; - if (afs_begin_vnode_operation(&fc, vnode, key)) { + if (afs_begin_vnode_operation(&fc, vnode, key, true)) { + afs_dataversion_t data_version = vnode->status.data_version; + while (afs_select_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(vnode); - afs_fs_fetch_data(&fc, desc); + afs_fs_fetch_data(&fc, scb, desc); } - afs_check_for_remote_deletion(&fc, fc.vnode); - afs_vnode_commit_status(&fc, vnode, fc.cb_break); + afs_check_for_remote_deletion(&fc, vnode); + afs_vnode_commit_status(&fc, vnode, fc.cb_break, + &data_version, scb); ret = afs_end_vnode_operation(&fc); } @@ -254,6 +259,7 @@ int afs_fetch_data(struct afs_vnode *vnode, struct key *key, struct afs_read *de &afs_v2net(vnode)->n_fetch_bytes); } + kfree(scb); _leave(" = %d", ret); return ret; } @@ -304,8 +310,7 @@ int afs_page_filler(void *data, struct page *page) /* fall through */ default: go_on: - req = kzalloc(sizeof(struct afs_read) + sizeof(struct page *), - GFP_KERNEL); + req = kzalloc(struct_size(req, array, 1), GFP_KERNEL); if (!req) goto enomem; @@ -404,10 +409,10 @@ static int afs_readpage(struct file *file, struct page *page) /* * Make pages available as they're filled. */ -static void afs_readpages_page_done(struct afs_call *call, struct afs_read *req) +static void afs_readpages_page_done(struct afs_read *req) { #ifdef CONFIG_AFS_FSCACHE - struct afs_vnode *vnode = call->reply[0]; + struct afs_vnode *vnode = req->vnode; #endif struct page *page = req->pages[req->index]; @@ -455,12 +460,12 @@ static int afs_readpages_one(struct file *file, struct address_space *mapping, n++; } - req = kzalloc(sizeof(struct afs_read) + sizeof(struct page *) * n, - GFP_NOFS); + req = kzalloc(struct_size(req, array, n), GFP_NOFS); if (!req) return -ENOMEM; refcount_set(&req->usage, 1); + req->vnode = vnode; req->page_done = afs_readpages_page_done; req->pos = first->index; req->pos <<= PAGE_SHIFT; diff --git a/fs/afs/flock.c b/fs/afs/flock.c index adc88eff7849..d5e5a6ddc847 100644 --- a/fs/afs/flock.c +++ b/fs/afs/flock.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* AFS file locking support * * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include "internal.h" @@ -41,9 +37,6 @@ void afs_lock_may_be_available(struct afs_vnode *vnode) { _enter("{%llx:%llu}", vnode->fid.vid, vnode->fid.vnode); - if (vnode->lock_state != AFS_VNODE_LOCK_WAITING_FOR_CB) - return; - spin_lock(&vnode->lock); if (vnode->lock_state == AFS_VNODE_LOCK_WAITING_FOR_CB) afs_next_locker(vnode, 0); @@ -77,7 +70,7 @@ static void afs_schedule_lock_extension(struct afs_vnode *vnode) */ void afs_lock_op_done(struct afs_call *call) { - struct afs_vnode *vnode = call->reply[0]; + struct afs_vnode *vnode = call->lvnode; if (call->error == 0) { spin_lock(&vnode->lock); @@ -185,6 +178,7 @@ static void afs_kill_lockers_enoent(struct afs_vnode *vnode) static int afs_set_lock(struct afs_vnode *vnode, struct key *key, afs_lock_type_t type) { + struct afs_status_cb *scb; struct afs_fs_cursor fc; int ret; @@ -195,18 +189,23 @@ static int afs_set_lock(struct afs_vnode *vnode, struct key *key, vnode->fid.unique, key_serial(key), type); + scb = kzalloc(sizeof(struct afs_status_cb), GFP_KERNEL); + if (!scb) + return -ENOMEM; + ret = -ERESTARTSYS; - if (afs_begin_vnode_operation(&fc, vnode, key)) { + if (afs_begin_vnode_operation(&fc, vnode, key, true)) { while (afs_select_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(vnode); - afs_fs_set_lock(&fc, type); + afs_fs_set_lock(&fc, type, scb); } - afs_check_for_remote_deletion(&fc, fc.vnode); - afs_vnode_commit_status(&fc, vnode, fc.cb_break); + afs_check_for_remote_deletion(&fc, vnode); + afs_vnode_commit_status(&fc, vnode, fc.cb_break, NULL, scb); ret = afs_end_vnode_operation(&fc); } + kfree(scb); _leave(" = %d", ret); return ret; } @@ -216,6 +215,7 @@ static int afs_set_lock(struct afs_vnode *vnode, struct key *key, */ static int afs_extend_lock(struct afs_vnode *vnode, struct key *key) { + struct afs_status_cb *scb; struct afs_fs_cursor fc; int ret; @@ -226,18 +226,23 @@ static int afs_extend_lock(struct afs_vnode *vnode, struct key *key) vnode->fid.unique, key_serial(key)); + scb = kzalloc(sizeof(struct afs_status_cb), GFP_KERNEL); + if (!scb) + return -ENOMEM; + ret = -ERESTARTSYS; - if (afs_begin_vnode_operation(&fc, vnode, key)) { + if (afs_begin_vnode_operation(&fc, vnode, key, false)) { while (afs_select_current_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(vnode); - afs_fs_extend_lock(&fc); + afs_fs_extend_lock(&fc, scb); } - afs_check_for_remote_deletion(&fc, fc.vnode); - afs_vnode_commit_status(&fc, vnode, fc.cb_break); + afs_check_for_remote_deletion(&fc, vnode); + afs_vnode_commit_status(&fc, vnode, fc.cb_break, NULL, scb); ret = afs_end_vnode_operation(&fc); } + kfree(scb); _leave(" = %d", ret); return ret; } @@ -247,6 +252,7 @@ static int afs_extend_lock(struct afs_vnode *vnode, struct key *key) */ static int afs_release_lock(struct afs_vnode *vnode, struct key *key) { + struct afs_status_cb *scb; struct afs_fs_cursor fc; int ret; @@ -257,18 +263,23 @@ static int afs_release_lock(struct afs_vnode *vnode, struct key *key) vnode->fid.unique, key_serial(key)); + scb = kzalloc(sizeof(struct afs_status_cb), GFP_KERNEL); + if (!scb) + return -ENOMEM; + ret = -ERESTARTSYS; - if (afs_begin_vnode_operation(&fc, vnode, key)) { + if (afs_begin_vnode_operation(&fc, vnode, key, false)) { while (afs_select_current_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(vnode); - afs_fs_release_lock(&fc); + afs_fs_release_lock(&fc, scb); } - afs_check_for_remote_deletion(&fc, fc.vnode); - afs_vnode_commit_status(&fc, vnode, fc.cb_break); + afs_check_for_remote_deletion(&fc, vnode); + afs_vnode_commit_status(&fc, vnode, fc.cb_break, NULL, scb); ret = afs_end_vnode_operation(&fc); } + kfree(scb); _leave(" = %d", ret); return ret; } @@ -736,7 +747,7 @@ static int afs_do_getlk(struct file *file, struct file_lock *fl) posix_test_lock(file, fl); if (fl->fl_type == F_UNLCK) { /* no local locks; consult the server */ - ret = afs_fetch_status(vnode, key, false); + ret = afs_fetch_status(vnode, key, false, NULL); if (ret < 0) goto error; diff --git a/fs/afs/fs_probe.c b/fs/afs/fs_probe.c index 5d3abde52a0f..cfe62b154f68 100644 --- a/fs/afs/fs_probe.c +++ b/fs/afs/fs_probe.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* AFS fileserver probing * * Copyright (C) 2018 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. */ #include <linux/sched.h> @@ -33,8 +29,8 @@ static bool afs_fs_probe_done(struct afs_server *server) void afs_fileserver_probe_result(struct afs_call *call) { struct afs_addr_list *alist = call->alist; - struct afs_server *server = call->reply[0]; - unsigned int server_index = (long)call->reply[1]; + struct afs_server *server = call->server; + unsigned int server_index = call->server_index; unsigned int index = call->addr_ix; unsigned int rtt = UINT_MAX; bool have_result = false; diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c index 1296f5dc4c1e..1ce73e014139 100644 --- a/fs/afs/fsclient.c +++ b/fs/afs/fsclient.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* AFS File Server client stubs * * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/init.h> @@ -60,78 +56,17 @@ static void xdr_dump_bad(const __be32 *bp) } /* - * Update the core inode struct from a returned status record. - */ -void afs_update_inode_from_status(struct afs_vnode *vnode, - struct afs_file_status *status, - const afs_dataversion_t *expected_version, - u8 flags) -{ - struct timespec64 t; - umode_t mode; - - t = status->mtime_client; - vnode->vfs_inode.i_ctime = t; - vnode->vfs_inode.i_mtime = t; - vnode->vfs_inode.i_atime = t; - - if (flags & (AFS_VNODE_META_CHANGED | AFS_VNODE_NOT_YET_SET)) { - vnode->vfs_inode.i_uid = make_kuid(&init_user_ns, status->owner); - vnode->vfs_inode.i_gid = make_kgid(&init_user_ns, status->group); - set_nlink(&vnode->vfs_inode, status->nlink); - - mode = vnode->vfs_inode.i_mode; - mode &= ~S_IALLUGO; - mode |= status->mode; - barrier(); - vnode->vfs_inode.i_mode = mode; - } - - if (!(flags & AFS_VNODE_NOT_YET_SET)) { - if (expected_version && - *expected_version != status->data_version) { - _debug("vnode modified %llx on {%llx:%llu} [exp %llx]", - (unsigned long long) status->data_version, - vnode->fid.vid, vnode->fid.vnode, - (unsigned long long) *expected_version); - vnode->invalid_before = status->data_version; - if (vnode->status.type == AFS_FTYPE_DIR) { - if (test_and_clear_bit(AFS_VNODE_DIR_VALID, &vnode->flags)) - afs_stat_v(vnode, n_inval); - } else { - set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags); - } - } else if (vnode->status.type == AFS_FTYPE_DIR) { - /* Expected directory change is handled elsewhere so - * that we can locally edit the directory and save on a - * download. - */ - if (test_bit(AFS_VNODE_DIR_VALID, &vnode->flags)) - flags &= ~AFS_VNODE_DATA_CHANGED; - } - } - - if (flags & (AFS_VNODE_DATA_CHANGED | AFS_VNODE_NOT_YET_SET)) { - inode_set_iversion_raw(&vnode->vfs_inode, status->data_version); - i_size_write(&vnode->vfs_inode, status->size); - } -} - -/* * decode an AFSFetchStatus block */ -static int xdr_decode_AFSFetchStatus(struct afs_call *call, - const __be32 **_bp, - struct afs_file_status *status, - struct afs_vnode *vnode, - const afs_dataversion_t *expected_version, - struct afs_read *read_req) +static int xdr_decode_AFSFetchStatus(const __be32 **_bp, + struct afs_call *call, + struct afs_status_cb *scb) { const struct afs_xdr_AFSFetchStatus *xdr = (const void *)*_bp; + struct afs_file_status *status = &scb->status; bool inline_error = (call->operation_ID == afs_FS_InlineBulkStatus); u64 data_version, size; u32 type, abort_code; - u8 flags = 0; abort_code = ntohl(xdr->abort_code); @@ -144,6 +79,7 @@ static int xdr_decode_AFSFetchStatus(struct afs_call *call, * case. */ status->abort_code = abort_code; + scb->have_error = true; return 0; } @@ -161,44 +97,25 @@ static int xdr_decode_AFSFetchStatus(struct afs_call *call, case AFS_FTYPE_FILE: case AFS_FTYPE_DIR: case AFS_FTYPE_SYMLINK: - if (type != status->type && - vnode && - !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { - pr_warning("Vnode %llx:%llx:%x changed type %u to %u\n", - vnode->fid.vid, - vnode->fid.vnode, - vnode->fid.unique, - status->type, type); - goto bad; - } status->type = type; break; default: goto bad; } -#define EXTRACT_M(FIELD) \ - do { \ - u32 x = ntohl(xdr->FIELD); \ - if (status->FIELD != x) { \ - flags |= AFS_VNODE_META_CHANGED; \ - status->FIELD = x; \ - } \ - } while (0) - - EXTRACT_M(nlink); - EXTRACT_M(author); - EXTRACT_M(owner); - EXTRACT_M(caller_access); /* call ticket dependent */ - EXTRACT_M(anon_access); - EXTRACT_M(mode); - EXTRACT_M(group); + status->nlink = ntohl(xdr->nlink); + status->author = ntohl(xdr->author); + status->owner = ntohl(xdr->owner); + status->caller_access = ntohl(xdr->caller_access); /* Ticket dependent */ + status->anon_access = ntohl(xdr->anon_access); + status->mode = ntohl(xdr->mode) & S_IALLUGO; + status->group = ntohl(xdr->group); + status->lock_count = ntohl(xdr->lock_count); status->mtime_client.tv_sec = ntohl(xdr->mtime_client); status->mtime_client.tv_nsec = 0; status->mtime_server.tv_sec = ntohl(xdr->mtime_server); status->mtime_server.tv_nsec = 0; - status->lock_count = ntohl(xdr->lock_count); size = (u64)ntohl(xdr->size_lo); size |= (u64)ntohl(xdr->size_hi) << 32; @@ -206,25 +123,10 @@ static int xdr_decode_AFSFetchStatus(struct afs_call *call, data_version = (u64)ntohl(xdr->data_version_lo); data_version |= (u64)ntohl(xdr->data_version_hi) << 32; - if (data_version != status->data_version) { - status->data_version = data_version; - flags |= AFS_VNODE_DATA_CHANGED; - } - - if (read_req) { - read_req->data_version = data_version; - read_req->file_size = size; - } + status->data_version = data_version; + scb->have_status = true; *_bp = (const void *)*_bp + sizeof(*xdr); - - if (vnode) { - if (test_bit(AFS_VNODE_UNSET, &vnode->flags)) - flags |= AFS_VNODE_NOT_YET_SET; - afs_update_inode_from_status(vnode, status, expected_version, - flags); - } - return 0; bad: @@ -232,77 +134,22 @@ bad: return afs_protocol_error(call, -EBADMSG, afs_eproto_bad_status); } -/* - * Decode the file status. We need to lock the target vnode if we're going to - * update its status so that stat() sees the attributes update atomically. - */ -static int afs_decode_status(struct afs_call *call, - const __be32 **_bp, - struct afs_file_status *status, - struct afs_vnode *vnode, - const afs_dataversion_t *expected_version, - struct afs_read *read_req) +static time64_t xdr_decode_expiry(struct afs_call *call, u32 expiry) { - int ret; - - if (!vnode) - return xdr_decode_AFSFetchStatus(call, _bp, status, vnode, - expected_version, read_req); - - write_seqlock(&vnode->cb_lock); - ret = xdr_decode_AFSFetchStatus(call, _bp, status, vnode, - expected_version, read_req); - write_sequnlock(&vnode->cb_lock); - return ret; + return ktime_divns(call->reply_time, NSEC_PER_SEC) + expiry; } -/* - * decode an AFSCallBack block - */ -static void xdr_decode_AFSCallBack(struct afs_call *call, - struct afs_vnode *vnode, - const __be32 **_bp) +static void xdr_decode_AFSCallBack(const __be32 **_bp, + struct afs_call *call, + struct afs_status_cb *scb) { - struct afs_cb_interest *old, *cbi = call->cbi; + struct afs_callback *cb = &scb->callback; const __be32 *bp = *_bp; - u32 cb_expiry; - - write_seqlock(&vnode->cb_lock); - - if (!afs_cb_is_broken(call->cb_break, vnode, cbi)) { - vnode->cb_version = ntohl(*bp++); - cb_expiry = ntohl(*bp++); - vnode->cb_type = ntohl(*bp++); - vnode->cb_expires_at = cb_expiry + ktime_get_real_seconds(); - old = vnode->cb_interest; - if (old != call->cbi) { - vnode->cb_interest = cbi; - cbi = old; - } - set_bit(AFS_VNODE_CB_PROMISED, &vnode->flags); - } else { - bp += 3; - } - write_sequnlock(&vnode->cb_lock); - call->cbi = cbi; - *_bp = bp; -} - -static ktime_t xdr_decode_expiry(struct afs_call *call, u32 expiry) -{ - return ktime_add_ns(call->reply_time, expiry * NSEC_PER_SEC); -} - -static void xdr_decode_AFSCallBack_raw(struct afs_call *call, - const __be32 **_bp, - struct afs_callback *cb) -{ - const __be32 *bp = *_bp; - - cb->version = ntohl(*bp++); + bp++; /* version */ cb->expires_at = xdr_decode_expiry(call, ntohl(*bp++)); - cb->type = ntohl(*bp++); + bp++; /* type */ + scb->have_cb = true; *_bp = bp; } @@ -395,7 +242,6 @@ static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp, */ static int afs_deliver_fs_fetch_status_vnode(struct afs_call *call) { - struct afs_vnode *vnode = call->reply[0]; const __be32 *bp; int ret; @@ -403,16 +249,13 @@ static int afs_deliver_fs_fetch_status_vnode(struct afs_call *call) if (ret < 0) return ret; - _enter("{%llx:%llu}", vnode->fid.vid, vnode->fid.vnode); - /* unmarshall the reply once we've received all of it */ bp = call->buffer; - ret = afs_decode_status(call, &bp, &vnode->status, vnode, - &call->expected_version, NULL); + ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb); if (ret < 0) return ret; - xdr_decode_AFSCallBack(call, vnode, &bp); - xdr_decode_AFSVolSync(&bp, call->reply[1]); + xdr_decode_AFSCallBack(&bp, call, call->out_scb); + xdr_decode_AFSVolSync(&bp, call->out_volsync); _leave(" = 0 [done]"); return 0; @@ -431,8 +274,8 @@ static const struct afs_call_type afs_RXFSFetchStatus_vnode = { /* * fetch the status information for a file */ -int afs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_volsync *volsync, - bool new_inode) +int afs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_status_cb *scb, + struct afs_volsync *volsync) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -440,7 +283,7 @@ int afs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_volsync *volsy __be32 *bp; if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) - return yfs_fs_fetch_file_status(fc, volsync, new_inode); + return yfs_fs_fetch_file_status(fc, scb, volsync); _enter(",%x,{%llx:%llu},,", key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); @@ -453,10 +296,8 @@ int afs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_volsync *volsy } call->key = fc->key; - call->reply[0] = vnode; - call->reply[1] = volsync; - call->expected_version = new_inode ? 1 : vnode->status.data_version; - call->want_reply_time = true; + call->out_scb = scb; + call->out_volsync = volsync; /* marshall the parameters */ bp = call->request; @@ -465,10 +306,10 @@ int afs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_volsync *volsy bp[2] = htonl(vnode->fid.vnode); bp[3] = htonl(vnode->fid.unique); - call->cb_break = fc->cb_break; afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &vnode->fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -478,8 +319,7 @@ int afs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_volsync *volsy */ static int afs_deliver_fs_fetch_data(struct afs_call *call) { - struct afs_vnode *vnode = call->reply[0]; - struct afs_read *req = call->reply[2]; + struct afs_read *req = call->read_request; const __be32 *bp; unsigned int size; int ret; @@ -541,7 +381,7 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call) if (req->offset == PAGE_SIZE) { req->offset = 0; if (req->page_done) - req->page_done(call, req); + req->page_done(req); req->index++; if (req->remain > 0) goto begin_page; @@ -575,12 +415,14 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call) return ret; bp = call->buffer; - ret = afs_decode_status(call, &bp, &vnode->status, vnode, - &vnode->status.data_version, req); + ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb); if (ret < 0) return ret; - xdr_decode_AFSCallBack(call, vnode, &bp); - xdr_decode_AFSVolSync(&bp, call->reply[1]); + xdr_decode_AFSCallBack(&bp, call, call->out_scb); + xdr_decode_AFSVolSync(&bp, call->out_volsync); + + req->data_version = call->out_scb->status.data_version; + req->file_size = call->out_scb->status.size; call->unmarshall++; @@ -593,7 +435,7 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call) zero_user_segment(req->pages[req->index], req->offset, PAGE_SIZE); if (req->page_done) - req->page_done(call, req); + req->page_done(req); req->offset = 0; } @@ -603,7 +445,7 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call) static void afs_fetch_data_destructor(struct afs_call *call) { - struct afs_read *req = call->reply[2]; + struct afs_read *req = call->read_request; afs_put_read(req); afs_flat_call_destructor(call); @@ -629,7 +471,9 @@ static const struct afs_call_type afs_RXFSFetchData64 = { /* * fetch data from a very large file */ -static int afs_fs_fetch_data64(struct afs_fs_cursor *fc, struct afs_read *req) +static int afs_fs_fetch_data64(struct afs_fs_cursor *fc, + struct afs_status_cb *scb, + struct afs_read *req) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -643,11 +487,9 @@ static int afs_fs_fetch_data64(struct afs_fs_cursor *fc, struct afs_read *req) return -ENOMEM; call->key = fc->key; - call->reply[0] = vnode; - call->reply[1] = NULL; /* volsync */ - call->reply[2] = req; - call->expected_version = vnode->status.data_version; - call->want_reply_time = true; + call->out_scb = scb; + call->out_volsync = NULL; + call->read_request = req; /* marshall the parameters */ bp = call->request; @@ -661,9 +503,9 @@ static int afs_fs_fetch_data64(struct afs_fs_cursor *fc, struct afs_read *req) bp[7] = htonl(lower_32_bits(req->len)); refcount_inc(&req->usage); - call->cb_break = fc->cb_break; afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &vnode->fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -671,7 +513,9 @@ static int afs_fs_fetch_data64(struct afs_fs_cursor *fc, struct afs_read *req) /* * fetch data from a file */ -int afs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_read *req) +int afs_fs_fetch_data(struct afs_fs_cursor *fc, + struct afs_status_cb *scb, + struct afs_read *req) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -679,12 +523,12 @@ int afs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_read *req) __be32 *bp; if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) - return yfs_fs_fetch_data(fc, req); + return yfs_fs_fetch_data(fc, scb, req); if (upper_32_bits(req->pos) || upper_32_bits(req->len) || upper_32_bits(req->pos + req->len)) - return afs_fs_fetch_data64(fc, req); + return afs_fs_fetch_data64(fc, scb, req); _enter(""); @@ -693,11 +537,9 @@ int afs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_read *req) return -ENOMEM; call->key = fc->key; - call->reply[0] = vnode; - call->reply[1] = NULL; /* volsync */ - call->reply[2] = req; - call->expected_version = vnode->status.data_version; - call->want_reply_time = true; + call->out_scb = scb; + call->out_volsync = NULL; + call->read_request = req; /* marshall the parameters */ bp = call->request; @@ -709,9 +551,9 @@ int afs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_read *req) bp[5] = htonl(lower_32_bits(req->len)); refcount_inc(&req->usage); - call->cb_break = fc->cb_break; afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &vnode->fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -721,28 +563,24 @@ int afs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_read *req) */ static int afs_deliver_fs_create_vnode(struct afs_call *call) { - struct afs_vnode *vnode = call->reply[0]; const __be32 *bp; int ret; - _enter("{%u}", call->unmarshall); - ret = afs_transfer_reply(call); if (ret < 0) return ret; /* unmarshall the reply once we've received all of it */ bp = call->buffer; - xdr_decode_AFSFid(&bp, call->reply[1]); - ret = afs_decode_status(call, &bp, call->reply[2], NULL, NULL, NULL); + xdr_decode_AFSFid(&bp, call->out_fid); + ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb); if (ret < 0) return ret; - ret = afs_decode_status(call, &bp, &vnode->status, vnode, - &call->expected_version, NULL); + ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb); if (ret < 0) return ret; - xdr_decode_AFSCallBack_raw(call, &bp, call->reply[3]); - /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ + xdr_decode_AFSCallBack(&bp, call, call->out_scb); + xdr_decode_AFSVolSync(&bp, call->out_volsync); _leave(" = 0 [done]"); return 0; @@ -771,24 +609,23 @@ static const struct afs_call_type afs_RXFSMakeDir = { int afs_fs_create(struct afs_fs_cursor *fc, const char *name, umode_t mode, - u64 current_data_version, + struct afs_status_cb *dvnode_scb, struct afs_fid *newfid, - struct afs_file_status *newstatus, - struct afs_callback *newcb) + struct afs_status_cb *new_scb) { - struct afs_vnode *vnode = fc->vnode; + struct afs_vnode *dvnode = fc->vnode; struct afs_call *call; - struct afs_net *net = afs_v2net(vnode); + struct afs_net *net = afs_v2net(dvnode); size_t namesz, reqsz, padsz; __be32 *bp; if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)){ if (S_ISDIR(mode)) - return yfs_fs_make_dir(fc, name, mode, current_data_version, - newfid, newstatus, newcb); + return yfs_fs_make_dir(fc, name, mode, dvnode_scb, + newfid, new_scb); else - return yfs_fs_create_file(fc, name, mode, current_data_version, - newfid, newstatus, newcb); + return yfs_fs_create_file(fc, name, mode, dvnode_scb, + newfid, new_scb); } _enter(""); @@ -804,19 +641,16 @@ int afs_fs_create(struct afs_fs_cursor *fc, return -ENOMEM; call->key = fc->key; - call->reply[0] = vnode; - call->reply[1] = newfid; - call->reply[2] = newstatus; - call->reply[3] = newcb; - call->expected_version = current_data_version + 1; - call->want_reply_time = true; + call->out_dir_scb = dvnode_scb; + call->out_fid = newfid; + call->out_scb = new_scb; /* marshall the parameters */ bp = call->request; *bp++ = htonl(S_ISDIR(mode) ? FSMAKEDIR : FSCREATEFILE); - *bp++ = htonl(vnode->fid.vid); - *bp++ = htonl(vnode->fid.vnode); - *bp++ = htonl(vnode->fid.unique); + *bp++ = htonl(dvnode->fid.vid); + *bp++ = htonl(dvnode->fid.vnode); + *bp++ = htonl(dvnode->fid.unique); *bp++ = htonl(namesz); memcpy(bp, name, namesz); bp = (void *) bp + namesz; @@ -825,41 +659,38 @@ int afs_fs_create(struct afs_fs_cursor *fc, bp = (void *) bp + padsz; } *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME); - *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */ + *bp++ = htonl(dvnode->vfs_inode.i_mtime.tv_sec); /* mtime */ *bp++ = 0; /* owner */ *bp++ = 0; /* group */ *bp++ = htonl(mode & S_IALLUGO); /* unix mode */ *bp++ = 0; /* segment size */ afs_use_fs_server(call, fc->cbi); - trace_afs_make_fs_call1(call, &vnode->fid, name); + trace_afs_make_fs_call1(call, &dvnode->fid, name); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } /* - * Deliver reply data to any operation that returns file status and volume + * Deliver reply data to any operation that returns directory status and volume * sync. */ -static int afs_deliver_fs_status_and_vol(struct afs_call *call) +static int afs_deliver_fs_dir_status_and_vol(struct afs_call *call) { - struct afs_vnode *vnode = call->reply[0]; const __be32 *bp; int ret; - _enter("{%u}", call->unmarshall); - ret = afs_transfer_reply(call); if (ret < 0) return ret; /* unmarshall the reply once we've received all of it */ bp = call->buffer; - ret = afs_decode_status(call, &bp, &vnode->status, vnode, - &call->expected_version, NULL); + ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb); if (ret < 0) return ret; - /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ + xdr_decode_AFSVolSync(&bp, call->out_volsync); _leave(" = 0 [done]"); return 0; @@ -871,14 +702,14 @@ static int afs_deliver_fs_status_and_vol(struct afs_call *call) static const struct afs_call_type afs_RXFSRemoveFile = { .name = "FS.RemoveFile", .op = afs_FS_RemoveFile, - .deliver = afs_deliver_fs_status_and_vol, + .deliver = afs_deliver_fs_dir_status_and_vol, .destructor = afs_flat_call_destructor, }; static const struct afs_call_type afs_RXFSRemoveDir = { .name = "FS.RemoveDir", .op = afs_FS_RemoveDir, - .deliver = afs_deliver_fs_status_and_vol, + .deliver = afs_deliver_fs_dir_status_and_vol, .destructor = afs_flat_call_destructor, }; @@ -886,7 +717,7 @@ static const struct afs_call_type afs_RXFSRemoveDir = { * remove a file or directory */ int afs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode, - const char *name, bool isdir, u64 current_data_version) + const char *name, bool isdir, struct afs_status_cb *dvnode_scb) { struct afs_vnode *dvnode = fc->vnode; struct afs_call *call; @@ -895,7 +726,7 @@ int afs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode, __be32 *bp; if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) - return yfs_fs_remove(fc, vnode, name, isdir, current_data_version); + return yfs_fs_remove(fc, vnode, name, isdir, dvnode_scb); _enter(""); @@ -910,9 +741,7 @@ int afs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode, return -ENOMEM; call->key = fc->key; - call->reply[0] = dvnode; - call->reply[1] = vnode; - call->expected_version = current_data_version + 1; + call->out_dir_scb = dvnode_scb; /* marshall the parameters */ bp = call->request; @@ -930,6 +759,7 @@ int afs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode, afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call1(call, &dvnode->fid, name); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -939,7 +769,6 @@ int afs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode, */ static int afs_deliver_fs_link(struct afs_call *call) { - struct afs_vnode *dvnode = call->reply[0], *vnode = call->reply[1]; const __be32 *bp; int ret; @@ -951,14 +780,13 @@ static int afs_deliver_fs_link(struct afs_call *call) /* unmarshall the reply once we've received all of it */ bp = call->buffer; - ret = afs_decode_status(call, &bp, &vnode->status, vnode, NULL, NULL); + ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb); if (ret < 0) return ret; - ret = afs_decode_status(call, &bp, &dvnode->status, dvnode, - &call->expected_version, NULL); + ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb); if (ret < 0) return ret; - /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ + xdr_decode_AFSVolSync(&bp, call->out_volsync); _leave(" = 0 [done]"); return 0; @@ -978,7 +806,9 @@ static const struct afs_call_type afs_RXFSLink = { * make a hard link */ int afs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode, - const char *name, u64 current_data_version) + const char *name, + struct afs_status_cb *dvnode_scb, + struct afs_status_cb *vnode_scb) { struct afs_vnode *dvnode = fc->vnode; struct afs_call *call; @@ -987,7 +817,7 @@ int afs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode, __be32 *bp; if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) - return yfs_fs_link(fc, vnode, name, current_data_version); + return yfs_fs_link(fc, vnode, name, dvnode_scb, vnode_scb); _enter(""); @@ -1000,9 +830,8 @@ int afs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode, return -ENOMEM; call->key = fc->key; - call->reply[0] = dvnode; - call->reply[1] = vnode; - call->expected_version = current_data_version + 1; + call->out_dir_scb = dvnode_scb; + call->out_scb = vnode_scb; /* marshall the parameters */ bp = call->request; @@ -1023,6 +852,7 @@ int afs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode, afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call1(call, &vnode->fid, name); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -1032,7 +862,6 @@ int afs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode, */ static int afs_deliver_fs_symlink(struct afs_call *call) { - struct afs_vnode *vnode = call->reply[0]; const __be32 *bp; int ret; @@ -1044,15 +873,14 @@ static int afs_deliver_fs_symlink(struct afs_call *call) /* unmarshall the reply once we've received all of it */ bp = call->buffer; - xdr_decode_AFSFid(&bp, call->reply[1]); - ret = afs_decode_status(call, &bp, call->reply[2], NULL, NULL, NULL); + xdr_decode_AFSFid(&bp, call->out_fid); + ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb); if (ret < 0) return ret; - ret = afs_decode_status(call, &bp, &vnode->status, vnode, - &call->expected_version, NULL); + ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb); if (ret < 0) return ret; - /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ + xdr_decode_AFSVolSync(&bp, call->out_volsync); _leave(" = 0 [done]"); return 0; @@ -1074,19 +902,19 @@ static const struct afs_call_type afs_RXFSSymlink = { int afs_fs_symlink(struct afs_fs_cursor *fc, const char *name, const char *contents, - u64 current_data_version, + struct afs_status_cb *dvnode_scb, struct afs_fid *newfid, - struct afs_file_status *newstatus) + struct afs_status_cb *new_scb) { - struct afs_vnode *vnode = fc->vnode; + struct afs_vnode *dvnode = fc->vnode; struct afs_call *call; - struct afs_net *net = afs_v2net(vnode); + struct afs_net *net = afs_v2net(dvnode); size_t namesz, reqsz, padsz, c_namesz, c_padsz; __be32 *bp; if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) - return yfs_fs_symlink(fc, name, contents, current_data_version, - newfid, newstatus); + return yfs_fs_symlink(fc, name, contents, dvnode_scb, + newfid, new_scb); _enter(""); @@ -1104,17 +932,16 @@ int afs_fs_symlink(struct afs_fs_cursor *fc, return -ENOMEM; call->key = fc->key; - call->reply[0] = vnode; - call->reply[1] = newfid; - call->reply[2] = newstatus; - call->expected_version = current_data_version + 1; + call->out_dir_scb = dvnode_scb; + call->out_fid = newfid; + call->out_scb = new_scb; /* marshall the parameters */ bp = call->request; *bp++ = htonl(FSSYMLINK); - *bp++ = htonl(vnode->fid.vid); - *bp++ = htonl(vnode->fid.vnode); - *bp++ = htonl(vnode->fid.unique); + *bp++ = htonl(dvnode->fid.vid); + *bp++ = htonl(dvnode->fid.vnode); + *bp++ = htonl(dvnode->fid.unique); *bp++ = htonl(namesz); memcpy(bp, name, namesz); bp = (void *) bp + namesz; @@ -1130,14 +957,15 @@ int afs_fs_symlink(struct afs_fs_cursor *fc, bp = (void *) bp + c_padsz; } *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME); - *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */ + *bp++ = htonl(dvnode->vfs_inode.i_mtime.tv_sec); /* mtime */ *bp++ = 0; /* owner */ *bp++ = 0; /* group */ *bp++ = htonl(S_IRWXUGO); /* unix mode */ *bp++ = 0; /* segment size */ afs_use_fs_server(call, fc->cbi); - trace_afs_make_fs_call1(call, &vnode->fid, name); + trace_afs_make_fs_call1(call, &dvnode->fid, name); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -1147,29 +975,24 @@ int afs_fs_symlink(struct afs_fs_cursor *fc, */ static int afs_deliver_fs_rename(struct afs_call *call) { - struct afs_vnode *orig_dvnode = call->reply[0], *new_dvnode = call->reply[1]; const __be32 *bp; int ret; - _enter("{%u}", call->unmarshall); - ret = afs_transfer_reply(call); if (ret < 0) return ret; /* unmarshall the reply once we've received all of it */ bp = call->buffer; - ret = afs_decode_status(call, &bp, &orig_dvnode->status, orig_dvnode, - &call->expected_version, NULL); + ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb); if (ret < 0) return ret; - if (new_dvnode != orig_dvnode) { - ret = afs_decode_status(call, &bp, &new_dvnode->status, new_dvnode, - &call->expected_version_2, NULL); + if (call->out_dir_scb != call->out_scb) { + ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb); if (ret < 0) return ret; } - /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ + xdr_decode_AFSVolSync(&bp, call->out_volsync); _leave(" = 0 [done]"); return 0; @@ -1186,14 +1009,14 @@ static const struct afs_call_type afs_RXFSRename = { }; /* - * create a symbolic link + * Rename/move a file or directory. */ int afs_fs_rename(struct afs_fs_cursor *fc, const char *orig_name, struct afs_vnode *new_dvnode, const char *new_name, - u64 current_orig_data_version, - u64 current_new_data_version) + struct afs_status_cb *orig_dvnode_scb, + struct afs_status_cb *new_dvnode_scb) { struct afs_vnode *orig_dvnode = fc->vnode; struct afs_call *call; @@ -1204,8 +1027,8 @@ int afs_fs_rename(struct afs_fs_cursor *fc, if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) return yfs_fs_rename(fc, orig_name, new_dvnode, new_name, - current_orig_data_version, - current_new_data_version); + orig_dvnode_scb, + new_dvnode_scb); _enter(""); @@ -1225,10 +1048,8 @@ int afs_fs_rename(struct afs_fs_cursor *fc, return -ENOMEM; call->key = fc->key; - call->reply[0] = orig_dvnode; - call->reply[1] = new_dvnode; - call->expected_version = current_orig_data_version + 1; - call->expected_version_2 = current_new_data_version + 1; + call->out_dir_scb = orig_dvnode_scb; + call->out_scb = new_dvnode_scb; /* marshall the parameters */ bp = call->request; @@ -1257,6 +1078,7 @@ int afs_fs_rename(struct afs_fs_cursor *fc, afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call2(call, &orig_dvnode->fid, orig_name, new_name); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -1266,7 +1088,6 @@ int afs_fs_rename(struct afs_fs_cursor *fc, */ static int afs_deliver_fs_store_data(struct afs_call *call) { - struct afs_vnode *vnode = call->reply[0]; const __be32 *bp; int ret; @@ -1278,13 +1099,10 @@ static int afs_deliver_fs_store_data(struct afs_call *call) /* unmarshall the reply once we've received all of it */ bp = call->buffer; - ret = afs_decode_status(call, &bp, &vnode->status, vnode, - &call->expected_version, NULL); + ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb); if (ret < 0) return ret; - /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ - - afs_pages_written_back(vnode, call); + xdr_decode_AFSVolSync(&bp, call->out_volsync); _leave(" = 0 [done]"); return 0; @@ -1314,7 +1132,8 @@ static int afs_fs_store_data64(struct afs_fs_cursor *fc, struct address_space *mapping, pgoff_t first, pgoff_t last, unsigned offset, unsigned to, - loff_t size, loff_t pos, loff_t i_size) + loff_t size, loff_t pos, loff_t i_size, + struct afs_status_cb *scb) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -1332,13 +1151,12 @@ static int afs_fs_store_data64(struct afs_fs_cursor *fc, call->key = fc->key; call->mapping = mapping; - call->reply[0] = vnode; call->first = first; call->last = last; call->first_offset = offset; call->last_to = to; call->send_pages = true; - call->expected_version = vnode->status.data_version + 1; + call->out_scb = scb; /* marshall the parameters */ bp = call->request; @@ -1362,6 +1180,7 @@ static int afs_fs_store_data64(struct afs_fs_cursor *fc, *bp++ = htonl((u32) i_size); trace_afs_make_fs_call(call, &vnode->fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -1371,7 +1190,8 @@ static int afs_fs_store_data64(struct afs_fs_cursor *fc, */ int afs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping, pgoff_t first, pgoff_t last, - unsigned offset, unsigned to) + unsigned offset, unsigned to, + struct afs_status_cb *scb) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -1380,7 +1200,7 @@ int afs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping, __be32 *bp; if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) - return yfs_fs_store_data(fc, mapping, first, last, offset, to); + return yfs_fs_store_data(fc, mapping, first, last, offset, to, scb); _enter(",%x,{%llx:%llu},,", key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); @@ -1401,7 +1221,7 @@ int afs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping, if (pos >> 32 || i_size >> 32 || size >> 32 || (pos + size) >> 32) return afs_fs_store_data64(fc, mapping, first, last, offset, to, - size, pos, i_size); + size, pos, i_size, scb); call = afs_alloc_flat_call(net, &afs_RXFSStoreData, (4 + 6 + 3) * 4, @@ -1411,13 +1231,12 @@ int afs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping, call->key = fc->key; call->mapping = mapping; - call->reply[0] = vnode; call->first = first; call->last = last; call->first_offset = offset; call->last_to = to; call->send_pages = true; - call->expected_version = vnode->status.data_version + 1; + call->out_scb = scb; /* marshall the parameters */ bp = call->request; @@ -1439,6 +1258,7 @@ int afs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping, afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &vnode->fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -1448,7 +1268,6 @@ int afs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping, */ static int afs_deliver_fs_store_status(struct afs_call *call) { - struct afs_vnode *vnode = call->reply[0]; const __be32 *bp; int ret; @@ -1460,11 +1279,10 @@ static int afs_deliver_fs_store_status(struct afs_call *call) /* unmarshall the reply once we've received all of it */ bp = call->buffer; - ret = afs_decode_status(call, &bp, &vnode->status, vnode, - &call->expected_version, NULL); + ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb); if (ret < 0) return ret; - /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ + xdr_decode_AFSVolSync(&bp, call->out_volsync); _leave(" = 0 [done]"); return 0; @@ -1498,7 +1316,8 @@ static const struct afs_call_type afs_RXFSStoreData64_as_Status = { * set the attributes on a very large file, using FS.StoreData rather than * FS.StoreStatus so as to alter the file size also */ -static int afs_fs_setattr_size64(struct afs_fs_cursor *fc, struct iattr *attr) +static int afs_fs_setattr_size64(struct afs_fs_cursor *fc, struct iattr *attr, + struct afs_status_cb *scb) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -1517,8 +1336,7 @@ static int afs_fs_setattr_size64(struct afs_fs_cursor *fc, struct iattr *attr) return -ENOMEM; call->key = fc->key; - call->reply[0] = vnode; - call->expected_version = vnode->status.data_version + 1; + call->out_scb = scb; /* marshall the parameters */ bp = call->request; @@ -1538,6 +1356,7 @@ static int afs_fs_setattr_size64(struct afs_fs_cursor *fc, struct iattr *attr) afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &vnode->fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -1546,7 +1365,8 @@ static int afs_fs_setattr_size64(struct afs_fs_cursor *fc, struct iattr *attr) * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus * so as to alter the file size also */ -static int afs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr) +static int afs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr, + struct afs_status_cb *scb) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -1558,7 +1378,7 @@ static int afs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr) ASSERT(attr->ia_valid & ATTR_SIZE); if (attr->ia_size >> 32) - return afs_fs_setattr_size64(fc, attr); + return afs_fs_setattr_size64(fc, attr, scb); call = afs_alloc_flat_call(net, &afs_RXFSStoreData_as_Status, (4 + 6 + 3) * 4, @@ -1567,8 +1387,7 @@ static int afs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr) return -ENOMEM; call->key = fc->key; - call->reply[0] = vnode; - call->expected_version = vnode->status.data_version + 1; + call->out_scb = scb; /* marshall the parameters */ bp = call->request; @@ -1585,6 +1404,7 @@ static int afs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr) afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &vnode->fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -1593,7 +1413,8 @@ static int afs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr) * set the attributes on a file, using FS.StoreData if there's a change in file * size, and FS.StoreStatus otherwise */ -int afs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr) +int afs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr, + struct afs_status_cb *scb) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -1601,10 +1422,10 @@ int afs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr) __be32 *bp; if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) - return yfs_fs_setattr(fc, attr); + return yfs_fs_setattr(fc, attr, scb); if (attr->ia_valid & ATTR_SIZE) - return afs_fs_setattr_size(fc, attr); + return afs_fs_setattr_size(fc, attr, scb); _enter(",%x,{%llx:%llu},,", key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); @@ -1616,8 +1437,7 @@ int afs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr) return -ENOMEM; call->key = fc->key; - call->reply[0] = vnode; - call->expected_version = vnode->status.data_version; + call->out_scb = scb; /* marshall the parameters */ bp = call->request; @@ -1630,6 +1450,7 @@ int afs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr) afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &vnode->fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -1659,7 +1480,7 @@ static int afs_deliver_fs_get_volume_status(struct afs_call *call) return ret; bp = call->buffer; - xdr_decode_AFSFetchVolumeStatus(&bp, call->reply[1]); + xdr_decode_AFSFetchVolumeStatus(&bp, call->out_volstatus); call->unmarshall++; afs_extract_to_tmp(call); @@ -1675,7 +1496,7 @@ static int afs_deliver_fs_get_volume_status(struct afs_call *call) return afs_protocol_error(call, -EBADMSG, afs_eproto_volname_len); size = (call->count + 3) & ~3; /* It's padded */ - afs_extract_begin(call, call->reply[2], size); + afs_extract_to_buf(call, size); call->unmarshall++; /* Fall through - and extract the volume name */ @@ -1685,7 +1506,7 @@ static int afs_deliver_fs_get_volume_status(struct afs_call *call) if (ret < 0) return ret; - p = call->reply[2]; + p = call->buffer; p[call->count] = 0; _debug("volname '%s'", p); afs_extract_to_tmp(call); @@ -1703,7 +1524,7 @@ static int afs_deliver_fs_get_volume_status(struct afs_call *call) return afs_protocol_error(call, -EBADMSG, afs_eproto_offline_msg_len); size = (call->count + 3) & ~3; /* It's padded */ - afs_extract_begin(call, call->reply[2], size); + afs_extract_to_buf(call, size); call->unmarshall++; /* Fall through - and extract the offline message */ @@ -1713,7 +1534,7 @@ static int afs_deliver_fs_get_volume_status(struct afs_call *call) if (ret < 0) return ret; - p = call->reply[2]; + p = call->buffer; p[call->count] = 0; _debug("offline '%s'", p); @@ -1732,7 +1553,7 @@ static int afs_deliver_fs_get_volume_status(struct afs_call *call) return afs_protocol_error(call, -EBADMSG, afs_eproto_motd_len); size = (call->count + 3) & ~3; /* It's padded */ - afs_extract_begin(call, call->reply[2], size); + afs_extract_to_buf(call, size); call->unmarshall++; /* Fall through - and extract the message of the day */ @@ -1742,7 +1563,7 @@ static int afs_deliver_fs_get_volume_status(struct afs_call *call) if (ret < 0) return ret; - p = call->reply[2]; + p = call->buffer; p[call->count] = 0; _debug("motd '%s'", p); @@ -1757,23 +1578,13 @@ static int afs_deliver_fs_get_volume_status(struct afs_call *call) } /* - * destroy an FS.GetVolumeStatus call - */ -static void afs_get_volume_status_call_destructor(struct afs_call *call) -{ - kfree(call->reply[2]); - call->reply[2] = NULL; - afs_flat_call_destructor(call); -} - -/* * FS.GetVolumeStatus operation type */ static const struct afs_call_type afs_RXFSGetVolumeStatus = { .name = "FS.GetVolumeStatus", .op = afs_FS_GetVolumeStatus, .deliver = afs_deliver_fs_get_volume_status, - .destructor = afs_get_volume_status_call_destructor, + .destructor = afs_flat_call_destructor, }; /* @@ -1786,27 +1597,19 @@ int afs_fs_get_volume_status(struct afs_fs_cursor *fc, struct afs_call *call; struct afs_net *net = afs_v2net(vnode); __be32 *bp; - void *tmpbuf; if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) return yfs_fs_get_volume_status(fc, vs); _enter(""); - tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL); - if (!tmpbuf) + call = afs_alloc_flat_call(net, &afs_RXFSGetVolumeStatus, 2 * 4, + max(12 * 4, AFSOPAQUEMAX + 1)); + if (!call) return -ENOMEM; - call = afs_alloc_flat_call(net, &afs_RXFSGetVolumeStatus, 2 * 4, 12 * 4); - if (!call) { - kfree(tmpbuf); - return -ENOMEM; - } - call->key = fc->key; - call->reply[0] = vnode; - call->reply[1] = vs; - call->reply[2] = tmpbuf; + call->out_volstatus = vs; /* marshall the parameters */ bp = call->request; @@ -1815,6 +1618,7 @@ int afs_fs_get_volume_status(struct afs_fs_cursor *fc, afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &vnode->fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -1835,7 +1639,7 @@ static int afs_deliver_fs_xxxx_lock(struct afs_call *call) /* unmarshall the reply once we've received all of it */ bp = call->buffer; - /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ + xdr_decode_AFSVolSync(&bp, call->out_volsync); _leave(" = 0 [done]"); return 0; @@ -1876,7 +1680,8 @@ static const struct afs_call_type afs_RXFSReleaseLock = { /* * Set a lock on a file */ -int afs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type) +int afs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type, + struct afs_status_cb *scb) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -1884,7 +1689,7 @@ int afs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type) __be32 *bp; if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) - return yfs_fs_set_lock(fc, type); + return yfs_fs_set_lock(fc, type, scb); _enter(""); @@ -1893,8 +1698,8 @@ int afs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type) return -ENOMEM; call->key = fc->key; - call->reply[0] = vnode; - call->want_reply_time = true; + call->lvnode = vnode; + call->out_scb = scb; /* marshall the parameters */ bp = call->request; @@ -1906,6 +1711,7 @@ int afs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type) afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_calli(call, &vnode->fid, type); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -1913,7 +1719,7 @@ int afs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type) /* * extend a lock on a file */ -int afs_fs_extend_lock(struct afs_fs_cursor *fc) +int afs_fs_extend_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -1921,7 +1727,7 @@ int afs_fs_extend_lock(struct afs_fs_cursor *fc) __be32 *bp; if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) - return yfs_fs_extend_lock(fc); + return yfs_fs_extend_lock(fc, scb); _enter(""); @@ -1930,8 +1736,8 @@ int afs_fs_extend_lock(struct afs_fs_cursor *fc) return -ENOMEM; call->key = fc->key; - call->reply[0] = vnode; - call->want_reply_time = true; + call->lvnode = vnode; + call->out_scb = scb; /* marshall the parameters */ bp = call->request; @@ -1942,6 +1748,7 @@ int afs_fs_extend_lock(struct afs_fs_cursor *fc) afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &vnode->fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -1949,7 +1756,7 @@ int afs_fs_extend_lock(struct afs_fs_cursor *fc) /* * release a lock on a file */ -int afs_fs_release_lock(struct afs_fs_cursor *fc) +int afs_fs_release_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -1957,7 +1764,7 @@ int afs_fs_release_lock(struct afs_fs_cursor *fc) __be32 *bp; if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) - return yfs_fs_release_lock(fc); + return yfs_fs_release_lock(fc, scb); _enter(""); @@ -1966,7 +1773,8 @@ int afs_fs_release_lock(struct afs_fs_cursor *fc) return -ENOMEM; call->key = fc->key; - call->reply[0] = vnode; + call->lvnode = vnode; + call->out_scb = scb; /* marshall the parameters */ bp = call->request; @@ -1977,6 +1785,7 @@ int afs_fs_release_lock(struct afs_fs_cursor *fc) afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &vnode->fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -2071,14 +1880,6 @@ static int afs_deliver_fs_get_capabilities(struct afs_call *call) return 0; } -static void afs_destroy_fs_get_capabilities(struct afs_call *call) -{ - struct afs_server *server = call->reply[0]; - - afs_put_server(call->net, server); - afs_flat_call_destructor(call); -} - /* * FS.GetCapabilities operation type */ @@ -2087,7 +1888,7 @@ static const struct afs_call_type afs_RXFSGetCapabilities = { .op = afs_FS_GetCapabilities, .deliver = afs_deliver_fs_get_capabilities, .done = afs_fileserver_probe_result, - .destructor = afs_destroy_fs_get_capabilities, + .destructor = afs_flat_call_destructor, }; /* @@ -2110,11 +1911,11 @@ struct afs_call *afs_fs_get_capabilities(struct afs_net *net, return ERR_PTR(-ENOMEM); call->key = key; - call->reply[0] = afs_get_server(server); - call->reply[1] = (void *)(long)server_index; + call->server = afs_get_server(server, afs_server_trace_get_caps); + call->server_index = server_index; call->upgrade = true; - call->want_reply_time = true; call->async = true; + call->max_lifespan = AFS_PROBE_MAX_LIFESPAN; /* marshall the parameters */ bp = call->request; @@ -2131,10 +1932,6 @@ struct afs_call *afs_fs_get_capabilities(struct afs_net *net, */ static int afs_deliver_fs_fetch_status(struct afs_call *call) { - struct afs_file_status *status = call->reply[1]; - struct afs_callback *callback = call->reply[2]; - struct afs_volsync *volsync = call->reply[3]; - struct afs_fid *fid = call->reply[0]; const __be32 *bp; int ret; @@ -2142,16 +1939,13 @@ static int afs_deliver_fs_fetch_status(struct afs_call *call) if (ret < 0) return ret; - _enter("{%llx:%llu}", fid->vid, fid->vnode); - /* unmarshall the reply once we've received all of it */ bp = call->buffer; - ret = afs_decode_status(call, &bp, status, NULL, - &call->expected_version, NULL); + ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb); if (ret < 0) return ret; - xdr_decode_AFSCallBack_raw(call, &bp, callback); - xdr_decode_AFSVolSync(&bp, volsync); + xdr_decode_AFSCallBack(&bp, call, call->out_scb); + xdr_decode_AFSVolSync(&bp, call->out_volsync); _leave(" = 0 [done]"); return 0; @@ -2173,15 +1967,14 @@ static const struct afs_call_type afs_RXFSFetchStatus = { int afs_fs_fetch_status(struct afs_fs_cursor *fc, struct afs_net *net, struct afs_fid *fid, - struct afs_file_status *status, - struct afs_callback *callback, + struct afs_status_cb *scb, struct afs_volsync *volsync) { struct afs_call *call; __be32 *bp; if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) - return yfs_fs_fetch_status(fc, net, fid, status, callback, volsync); + return yfs_fs_fetch_status(fc, net, fid, scb, volsync); _enter(",%x,{%llx:%llu},,", key_serial(fc->key), fid->vid, fid->vnode); @@ -2193,12 +1986,9 @@ int afs_fs_fetch_status(struct afs_fs_cursor *fc, } call->key = fc->key; - call->reply[0] = fid; - call->reply[1] = status; - call->reply[2] = callback; - call->reply[3] = volsync; - call->expected_version = 1; /* vnode->status.data_version */ - call->want_reply_time = true; + call->out_fid = fid; + call->out_scb = scb; + call->out_volsync = volsync; /* marshall the parameters */ bp = call->request; @@ -2207,9 +1997,9 @@ int afs_fs_fetch_status(struct afs_fs_cursor *fc, bp[2] = htonl(fid->vnode); bp[3] = htonl(fid->unique); - call->cb_break = fc->cb_break; afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -2219,9 +2009,7 @@ int afs_fs_fetch_status(struct afs_fs_cursor *fc, */ static int afs_deliver_fs_inline_bulk_status(struct afs_call *call) { - struct afs_file_status *statuses; - struct afs_callback *callbacks; - struct afs_vnode *vnode = call->reply[0]; + struct afs_status_cb *scb; const __be32 *bp; u32 tmp; int ret; @@ -2260,10 +2048,8 @@ static int afs_deliver_fs_inline_bulk_status(struct afs_call *call) return ret; bp = call->buffer; - statuses = call->reply[1]; - ret = afs_decode_status(call, &bp, &statuses[call->count], - call->count == 0 ? vnode : NULL, - NULL, NULL); + scb = &call->out_scb[call->count]; + ret = xdr_decode_AFSFetchStatus(&bp, call, scb); if (ret < 0) return ret; @@ -2302,13 +2088,8 @@ static int afs_deliver_fs_inline_bulk_status(struct afs_call *call) _debug("unmarshall CB array"); bp = call->buffer; - callbacks = call->reply[2]; - callbacks[call->count].version = ntohl(bp[0]); - callbacks[call->count].expires_at = xdr_decode_expiry(call, ntohl(bp[1])); - callbacks[call->count].type = ntohl(bp[2]); - statuses = call->reply[1]; - if (call->count == 0 && vnode && statuses[0].abort_code == 0) - xdr_decode_AFSCallBack(call, vnode, &bp); + scb = &call->out_scb[call->count]; + xdr_decode_AFSCallBack(&bp, call, scb); call->count++; if (call->count < call->count2) goto more_cbs; @@ -2323,7 +2104,7 @@ static int afs_deliver_fs_inline_bulk_status(struct afs_call *call) return ret; bp = call->buffer; - xdr_decode_AFSVolSync(&bp, call->reply[3]); + xdr_decode_AFSVolSync(&bp, call->out_volsync); call->unmarshall++; @@ -2351,8 +2132,7 @@ static const struct afs_call_type afs_RXFSInlineBulkStatus = { int afs_fs_inline_bulk_status(struct afs_fs_cursor *fc, struct afs_net *net, struct afs_fid *fids, - struct afs_file_status *statuses, - struct afs_callback *callbacks, + struct afs_status_cb *statuses, unsigned int nr_fids, struct afs_volsync *volsync) { @@ -2361,7 +2141,7 @@ int afs_fs_inline_bulk_status(struct afs_fs_cursor *fc, int i; if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) - return yfs_fs_inline_bulk_status(fc, net, fids, statuses, callbacks, + return yfs_fs_inline_bulk_status(fc, net, fids, statuses, nr_fids, volsync); _enter(",%x,{%llx:%llu},%u", @@ -2376,12 +2156,9 @@ int afs_fs_inline_bulk_status(struct afs_fs_cursor *fc, } call->key = fc->key; - call->reply[0] = NULL; /* vnode for fid[0] */ - call->reply[1] = statuses; - call->reply[2] = callbacks; - call->reply[3] = volsync; + call->out_scb = statuses; + call->out_volsync = volsync; call->count2 = nr_fids; - call->want_reply_time = true; /* marshall the parameters */ bp = call->request; @@ -2393,9 +2170,9 @@ int afs_fs_inline_bulk_status(struct afs_fs_cursor *fc, *bp++ = htonl(fids[i].unique); } - call->cb_break = fc->cb_break; afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &fids[0]); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -2405,7 +2182,6 @@ int afs_fs_inline_bulk_status(struct afs_fs_cursor *fc, */ static int afs_deliver_fs_fetch_acl(struct afs_call *call) { - struct afs_vnode *vnode = call->reply[1]; struct afs_acl *acl; const __be32 *bp; unsigned int size; @@ -2430,7 +2206,7 @@ static int afs_deliver_fs_fetch_acl(struct afs_call *call) acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL); if (!acl) return -ENOMEM; - call->reply[0] = acl; + call->ret_acl = acl; acl->size = call->count2; afs_extract_begin(call, acl->data, size); call->unmarshall++; @@ -2451,11 +2227,10 @@ static int afs_deliver_fs_fetch_acl(struct afs_call *call) return ret; bp = call->buffer; - ret = afs_decode_status(call, &bp, &vnode->status, vnode, - &vnode->status.data_version, NULL); + ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb); if (ret < 0) return ret; - xdr_decode_AFSVolSync(&bp, call->reply[2]); + xdr_decode_AFSVolSync(&bp, call->out_volsync); call->unmarshall++; @@ -2469,7 +2244,7 @@ static int afs_deliver_fs_fetch_acl(struct afs_call *call) static void afs_destroy_fs_fetch_acl(struct afs_call *call) { - kfree(call->reply[0]); + kfree(call->ret_acl); afs_flat_call_destructor(call); } @@ -2486,7 +2261,8 @@ static const struct afs_call_type afs_RXFSFetchACL = { /* * Fetch the ACL for a file. */ -struct afs_acl *afs_fs_fetch_acl(struct afs_fs_cursor *fc) +struct afs_acl *afs_fs_fetch_acl(struct afs_fs_cursor *fc, + struct afs_status_cb *scb) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -2503,10 +2279,9 @@ struct afs_acl *afs_fs_fetch_acl(struct afs_fs_cursor *fc) } call->key = fc->key; - call->reply[0] = NULL; - call->reply[1] = vnode; - call->reply[2] = NULL; /* volsync */ - call->ret_reply0 = true; + call->ret_acl = NULL; + call->out_scb = scb; + call->out_volsync = NULL; /* marshall the parameters */ bp = call->request; @@ -2515,7 +2290,6 @@ struct afs_acl *afs_fs_fetch_acl(struct afs_fs_cursor *fc) bp[2] = htonl(vnode->fid.vnode); bp[3] = htonl(vnode->fid.unique); - call->cb_break = fc->cb_break; afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &vnode->fid); afs_make_call(&fc->ac, call, GFP_KERNEL); @@ -2523,19 +2297,43 @@ struct afs_acl *afs_fs_fetch_acl(struct afs_fs_cursor *fc) } /* + * Deliver reply data to any operation that returns file status and volume + * sync. + */ +static int afs_deliver_fs_file_status_and_vol(struct afs_call *call) +{ + const __be32 *bp; + int ret; + + ret = afs_transfer_reply(call); + if (ret < 0) + return ret; + + bp = call->buffer; + ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb); + if (ret < 0) + return ret; + xdr_decode_AFSVolSync(&bp, call->out_volsync); + + _leave(" = 0 [done]"); + return 0; +} + +/* * FS.StoreACL operation type */ static const struct afs_call_type afs_RXFSStoreACL = { .name = "FS.StoreACL", .op = afs_FS_StoreACL, - .deliver = afs_deliver_fs_status_and_vol, + .deliver = afs_deliver_fs_file_status_and_vol, .destructor = afs_flat_call_destructor, }; /* * Fetch the ACL for a file. */ -int afs_fs_store_acl(struct afs_fs_cursor *fc, const struct afs_acl *acl) +int afs_fs_store_acl(struct afs_fs_cursor *fc, const struct afs_acl *acl, + struct afs_status_cb *scb) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -2555,8 +2353,8 @@ int afs_fs_store_acl(struct afs_fs_cursor *fc, const struct afs_acl *acl) } call->key = fc->key; - call->reply[0] = vnode; - call->reply[2] = NULL; /* volsync */ + call->out_scb = scb; + call->out_volsync = NULL; /* marshall the parameters */ bp = call->request; diff --git a/fs/afs/inode.c b/fs/afs/inode.c index c4652b42d545..7b1c18c32f48 100644 --- a/fs/afs/inode.c +++ b/fs/afs/inode.c @@ -23,6 +23,7 @@ #include <linux/namei.h> #include <linux/iversion.h> #include "internal.h" +#include "afs_fs.h" static const struct inode_operations afs_symlink_inode_operations = { .get_link = page_get_link, @@ -55,41 +56,63 @@ static noinline void dump_vnode(struct afs_vnode *vnode, struct afs_vnode *paren } /* + * Set the file size and block count. Estimate the number of 512 bytes blocks + * used, rounded up to nearest 1K for consistency with other AFS clients. + */ +static void afs_set_i_size(struct afs_vnode *vnode, u64 size) +{ + i_size_write(&vnode->vfs_inode, size); + vnode->vfs_inode.i_blocks = ((size + 1023) >> 10) << 1; +} + +/* * Initialise an inode from the vnode status. */ static int afs_inode_init_from_status(struct afs_vnode *vnode, struct key *key, - struct afs_vnode *parent_vnode) + struct afs_cb_interest *cbi, + struct afs_vnode *parent_vnode, + struct afs_status_cb *scb) { + struct afs_cb_interest *old_cbi = NULL; + struct afs_file_status *status = &scb->status; struct inode *inode = AFS_VNODE_TO_I(vnode); + struct timespec64 t; _debug("FS: ft=%d lk=%d sz=%llu ver=%Lu mod=%hu", - vnode->status.type, - vnode->status.nlink, - (unsigned long long) vnode->status.size, - vnode->status.data_version, - vnode->status.mode); + status->type, + status->nlink, + (unsigned long long) status->size, + status->data_version, + status->mode); + + write_seqlock(&vnode->cb_lock); - read_seqlock_excl(&vnode->cb_lock); + vnode->status = *status; - afs_update_inode_from_status(vnode, &vnode->status, NULL, - AFS_VNODE_NOT_YET_SET); + t = status->mtime_client; + inode->i_ctime = t; + inode->i_mtime = t; + inode->i_atime = t; + inode->i_uid = make_kuid(&init_user_ns, status->owner); + inode->i_gid = make_kgid(&init_user_ns, status->group); + set_nlink(&vnode->vfs_inode, status->nlink); - switch (vnode->status.type) { + switch (status->type) { case AFS_FTYPE_FILE: - inode->i_mode = S_IFREG | vnode->status.mode; + inode->i_mode = S_IFREG | status->mode; inode->i_op = &afs_file_inode_operations; inode->i_fop = &afs_file_operations; inode->i_mapping->a_ops = &afs_fs_aops; break; case AFS_FTYPE_DIR: - inode->i_mode = S_IFDIR | vnode->status.mode; + inode->i_mode = S_IFDIR | status->mode; inode->i_op = &afs_dir_inode_operations; inode->i_fop = &afs_dir_file_operations; inode->i_mapping->a_ops = &afs_dir_aops; break; case AFS_FTYPE_SYMLINK: /* Symlinks with a mode of 0644 are actually mountpoints. */ - if ((vnode->status.mode & 0777) == 0644) { + if ((status->mode & 0777) == 0644) { inode->i_flags |= S_AUTOMOUNT; set_bit(AFS_VNODE_MOUNTPOINT, &vnode->flags); @@ -99,7 +122,7 @@ static int afs_inode_init_from_status(struct afs_vnode *vnode, struct key *key, inode->i_fop = &afs_mntpt_file_operations; inode->i_mapping->a_ops = &afs_fs_aops; } else { - inode->i_mode = S_IFLNK | vnode->status.mode; + inode->i_mode = S_IFLNK | status->mode; inode->i_op = &afs_symlink_inode_operations; inode->i_mapping->a_ops = &afs_fs_aops; } @@ -107,26 +130,181 @@ static int afs_inode_init_from_status(struct afs_vnode *vnode, struct key *key, break; default: dump_vnode(vnode, parent_vnode); - read_sequnlock_excl(&vnode->cb_lock); + write_sequnlock(&vnode->cb_lock); return afs_protocol_error(NULL, -EBADMSG, afs_eproto_file_type); } - /* - * Estimate 512 bytes blocks used, rounded up to nearest 1K - * for consistency with other AFS clients. - */ - inode->i_blocks = ((i_size_read(inode) + 1023) >> 10) << 1; - vnode->invalid_before = vnode->status.data_version; + afs_set_i_size(vnode, status->size); - read_sequnlock_excl(&vnode->cb_lock); + vnode->invalid_before = status->data_version; + inode_set_iversion_raw(&vnode->vfs_inode, status->data_version); + + if (!scb->have_cb) { + /* it's a symlink we just created (the fileserver + * didn't give us a callback) */ + vnode->cb_expires_at = ktime_get_real_seconds(); + } else { + vnode->cb_expires_at = scb->callback.expires_at; + old_cbi = rcu_dereference_protected(vnode->cb_interest, + lockdep_is_held(&vnode->cb_lock.lock)); + if (cbi != old_cbi) + rcu_assign_pointer(vnode->cb_interest, afs_get_cb_interest(cbi)); + else + old_cbi = NULL; + set_bit(AFS_VNODE_CB_PROMISED, &vnode->flags); + } + + write_sequnlock(&vnode->cb_lock); + afs_put_cb_interest(afs_v2net(vnode), old_cbi); return 0; } /* + * Update the core inode struct from a returned status record. + */ +static void afs_apply_status(struct afs_fs_cursor *fc, + struct afs_vnode *vnode, + struct afs_status_cb *scb, + const afs_dataversion_t *expected_version) +{ + struct afs_file_status *status = &scb->status; + struct timespec64 t; + umode_t mode; + bool data_changed = false; + + BUG_ON(test_bit(AFS_VNODE_UNSET, &vnode->flags)); + + if (status->type != vnode->status.type) { + pr_warning("Vnode %llx:%llx:%x changed type %u to %u\n", + vnode->fid.vid, + vnode->fid.vnode, + vnode->fid.unique, + status->type, vnode->status.type); + afs_protocol_error(NULL, -EBADMSG, afs_eproto_bad_status); + return; + } + + if (status->nlink != vnode->status.nlink) + set_nlink(&vnode->vfs_inode, status->nlink); + + if (status->owner != vnode->status.owner) + vnode->vfs_inode.i_uid = make_kuid(&init_user_ns, status->owner); + + if (status->group != vnode->status.group) + vnode->vfs_inode.i_gid = make_kgid(&init_user_ns, status->group); + + if (status->mode != vnode->status.mode) { + mode = vnode->vfs_inode.i_mode; + mode &= ~S_IALLUGO; + mode |= status->mode; + WRITE_ONCE(vnode->vfs_inode.i_mode, mode); + } + + t = status->mtime_client; + vnode->vfs_inode.i_ctime = t; + vnode->vfs_inode.i_mtime = t; + vnode->vfs_inode.i_atime = t; + + if (vnode->status.data_version != status->data_version) + data_changed = true; + + vnode->status = *status; + + if (expected_version && + *expected_version != status->data_version) { + if (test_bit(AFS_VNODE_CB_PROMISED, &vnode->flags)) + pr_warn("kAFS: vnode modified {%llx:%llu} %llx->%llx %s\n", + vnode->fid.vid, vnode->fid.vnode, + (unsigned long long)*expected_version, + (unsigned long long)status->data_version, + fc->type ? fc->type->name : "???"); + + vnode->invalid_before = status->data_version; + if (vnode->status.type == AFS_FTYPE_DIR) { + if (test_and_clear_bit(AFS_VNODE_DIR_VALID, &vnode->flags)) + afs_stat_v(vnode, n_inval); + } else { + set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags); + } + } else if (vnode->status.type == AFS_FTYPE_DIR) { + /* Expected directory change is handled elsewhere so + * that we can locally edit the directory and save on a + * download. + */ + if (test_bit(AFS_VNODE_DIR_VALID, &vnode->flags)) + data_changed = false; + } + + if (data_changed) { + inode_set_iversion_raw(&vnode->vfs_inode, status->data_version); + afs_set_i_size(vnode, status->size); + } +} + +/* + * Apply a callback to a vnode. + */ +static void afs_apply_callback(struct afs_fs_cursor *fc, + struct afs_vnode *vnode, + struct afs_status_cb *scb, + unsigned int cb_break) +{ + struct afs_cb_interest *old; + struct afs_callback *cb = &scb->callback; + + if (!afs_cb_is_broken(cb_break, vnode, fc->cbi)) { + vnode->cb_expires_at = cb->expires_at; + old = rcu_dereference_protected(vnode->cb_interest, + lockdep_is_held(&vnode->cb_lock.lock)); + if (old != fc->cbi) { + rcu_assign_pointer(vnode->cb_interest, afs_get_cb_interest(fc->cbi)); + afs_put_cb_interest(afs_v2net(vnode), old); + } + set_bit(AFS_VNODE_CB_PROMISED, &vnode->flags); + } +} + +/* + * Apply the received status and callback to an inode all in the same critical + * section to avoid races with afs_validate(). + */ +void afs_vnode_commit_status(struct afs_fs_cursor *fc, + struct afs_vnode *vnode, + unsigned int cb_break, + const afs_dataversion_t *expected_version, + struct afs_status_cb *scb) +{ + if (fc->ac.error != 0) + return; + + write_seqlock(&vnode->cb_lock); + + if (scb->have_error) { + if (scb->status.abort_code == VNOVNODE) { + set_bit(AFS_VNODE_DELETED, &vnode->flags); + clear_nlink(&vnode->vfs_inode); + __afs_break_callback(vnode, afs_cb_break_for_deleted); + } + } else { + if (scb->have_status) + afs_apply_status(fc, vnode, scb, expected_version); + if (scb->have_cb) + afs_apply_callback(fc, vnode, scb, cb_break); + } + + write_sequnlock(&vnode->cb_lock); + + if (fc->ac.error == 0 && scb->have_status) + afs_cache_permit(vnode, fc->key, cb_break, scb); +} + +/* * Fetch file status from the volume. */ -int afs_fetch_status(struct afs_vnode *vnode, struct key *key, bool new_inode) +int afs_fetch_status(struct afs_vnode *vnode, struct key *key, bool is_new, + afs_access_t *_caller_access) { + struct afs_status_cb *scb; struct afs_fs_cursor fc; int ret; @@ -135,18 +313,38 @@ int afs_fetch_status(struct afs_vnode *vnode, struct key *key, bool new_inode) vnode->fid.vid, vnode->fid.vnode, vnode->fid.unique, vnode->flags); + scb = kzalloc(sizeof(struct afs_status_cb), GFP_KERNEL); + if (!scb) + return -ENOMEM; + ret = -ERESTARTSYS; - if (afs_begin_vnode_operation(&fc, vnode, key)) { + if (afs_begin_vnode_operation(&fc, vnode, key, true)) { + afs_dataversion_t data_version = vnode->status.data_version; + while (afs_select_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(vnode); - afs_fs_fetch_file_status(&fc, NULL, new_inode); + afs_fs_fetch_file_status(&fc, scb, NULL); } - afs_check_for_remote_deletion(&fc, fc.vnode); - afs_vnode_commit_status(&fc, vnode, fc.cb_break); + if (fc.error) { + /* Do nothing. */ + } else if (is_new) { + ret = afs_inode_init_from_status(vnode, key, fc.cbi, + NULL, scb); + fc.error = ret; + if (ret == 0) + afs_cache_permit(vnode, key, fc.cb_break, scb); + } else { + afs_vnode_commit_status(&fc, vnode, fc.cb_break, + &data_version, scb); + } + afs_check_for_remote_deletion(&fc, vnode); ret = afs_end_vnode_operation(&fc); } + if (ret == 0 && _caller_access) + *_caller_access = scb->status.caller_access; + kfree(scb); _leave(" = %d", ret); return ret; } @@ -156,10 +354,10 @@ int afs_fetch_status(struct afs_vnode *vnode, struct key *key, bool new_inode) */ int afs_iget5_test(struct inode *inode, void *opaque) { - struct afs_iget_data *data = opaque; + struct afs_iget_data *iget_data = opaque; struct afs_vnode *vnode = AFS_FS_I(inode); - return memcmp(&vnode->fid, &data->fid, sizeof(data->fid)) == 0; + return memcmp(&vnode->fid, &iget_data->fid, sizeof(iget_data->fid)) == 0; } /* @@ -177,17 +375,19 @@ static int afs_iget5_pseudo_dir_test(struct inode *inode, void *opaque) */ static int afs_iget5_set(struct inode *inode, void *opaque) { - struct afs_iget_data *data = opaque; + struct afs_iget_data *iget_data = opaque; struct afs_vnode *vnode = AFS_FS_I(inode); - vnode->fid = data->fid; - vnode->volume = data->volume; + vnode->fid = iget_data->fid; + vnode->volume = iget_data->volume; + vnode->cb_v_break = iget_data->cb_v_break; + vnode->cb_s_break = iget_data->cb_s_break; /* YFS supports 96-bit vnode IDs, but Linux only supports * 64-bit inode numbers. */ - inode->i_ino = data->fid.vnode; - inode->i_generation = data->fid.unique; + inode->i_ino = iget_data->fid.vnode; + inode->i_generation = iget_data->fid.unique; return 0; } @@ -197,38 +397,42 @@ static int afs_iget5_set(struct inode *inode, void *opaque) */ struct inode *afs_iget_pseudo_dir(struct super_block *sb, bool root) { - struct afs_iget_data data; struct afs_super_info *as; struct afs_vnode *vnode; struct inode *inode; static atomic_t afs_autocell_ino; + struct afs_iget_data iget_data = { + .cb_v_break = 0, + .cb_s_break = 0, + }; + _enter(""); as = sb->s_fs_info; if (as->volume) { - data.volume = as->volume; - data.fid.vid = as->volume->vid; + iget_data.volume = as->volume; + iget_data.fid.vid = as->volume->vid; } if (root) { - data.fid.vnode = 1; - data.fid.unique = 1; + iget_data.fid.vnode = 1; + iget_data.fid.unique = 1; } else { - data.fid.vnode = atomic_inc_return(&afs_autocell_ino); - data.fid.unique = 0; + iget_data.fid.vnode = atomic_inc_return(&afs_autocell_ino); + iget_data.fid.unique = 0; } - inode = iget5_locked(sb, data.fid.vnode, + inode = iget5_locked(sb, iget_data.fid.vnode, afs_iget5_pseudo_dir_test, afs_iget5_set, - &data); + &iget_data); if (!inode) { _leave(" = -ENOMEM"); return ERR_PTR(-ENOMEM); } _debug("GOT INODE %p { ino=%lu, vl=%llx, vn=%llx, u=%x }", - inode, inode->i_ino, data.fid.vid, data.fid.vnode, - data.fid.unique); + inode, inode->i_ino, iget_data.fid.vid, iget_data.fid.vnode, + iget_data.fid.unique); vnode = AFS_FS_I(inode); @@ -299,23 +503,24 @@ static void afs_get_inode_cache(struct afs_vnode *vnode) * inode retrieval */ struct inode *afs_iget(struct super_block *sb, struct key *key, - struct afs_fid *fid, struct afs_file_status *status, - struct afs_callback *cb, struct afs_cb_interest *cbi, + struct afs_iget_data *iget_data, + struct afs_status_cb *scb, + struct afs_cb_interest *cbi, struct afs_vnode *parent_vnode) { - struct afs_iget_data data = { .fid = *fid }; struct afs_super_info *as; struct afs_vnode *vnode; + struct afs_fid *fid = &iget_data->fid; struct inode *inode; int ret; _enter(",{%llx:%llu.%u},,", fid->vid, fid->vnode, fid->unique); as = sb->s_fs_info; - data.volume = as->volume; + iget_data->volume = as->volume; inode = iget5_locked(sb, fid->vnode, afs_iget5_test, afs_iget5_set, - &data); + iget_data); if (!inode) { _leave(" = -ENOMEM"); return ERR_PTR(-ENOMEM); @@ -332,43 +537,25 @@ struct inode *afs_iget(struct super_block *sb, struct key *key, return inode; } - if (!status) { + if (!scb) { /* it's a remotely extant inode */ - ret = afs_fetch_status(vnode, key, true); + ret = afs_fetch_status(vnode, key, true, NULL); if (ret < 0) goto bad_inode; } else { - /* it's an inode we just created */ - memcpy(&vnode->status, status, sizeof(vnode->status)); - - if (!cb) { - /* it's a symlink we just created (the fileserver - * didn't give us a callback) */ - vnode->cb_version = 0; - vnode->cb_type = 0; - vnode->cb_expires_at = ktime_get(); - } else { - vnode->cb_version = cb->version; - vnode->cb_type = cb->type; - vnode->cb_expires_at = cb->expires_at; - vnode->cb_interest = afs_get_cb_interest(cbi); - set_bit(AFS_VNODE_CB_PROMISED, &vnode->flags); - } - - vnode->cb_expires_at += ktime_get_real_seconds(); + ret = afs_inode_init_from_status(vnode, key, cbi, parent_vnode, + scb); + if (ret < 0) + goto bad_inode; } - ret = afs_inode_init_from_status(vnode, key, parent_vnode); - if (ret < 0) - goto bad_inode; - afs_get_inode_cache(vnode); /* success */ clear_bit(AFS_VNODE_UNSET, &vnode->flags); inode->i_flags |= S_NOATIME; unlock_new_inode(inode); - _leave(" = %p [CB { v=%u t=%u }]", inode, vnode->cb_version, vnode->cb_type); + _leave(" = %p", inode); return inode; /* failure */ @@ -400,6 +587,69 @@ void afs_zap_data(struct afs_vnode *vnode) } /* + * Check the validity of a vnode/inode. + */ +bool afs_check_validity(struct afs_vnode *vnode) +{ + struct afs_cb_interest *cbi; + struct afs_server *server; + struct afs_volume *volume = vnode->volume; + enum afs_cb_break_reason need_clear = afs_cb_break_no_break; + time64_t now = ktime_get_real_seconds(); + bool valid; + unsigned int cb_break, cb_s_break, cb_v_break; + int seq = 0; + + do { + read_seqbegin_or_lock(&vnode->cb_lock, &seq); + cb_v_break = READ_ONCE(volume->cb_v_break); + cb_break = vnode->cb_break; + + if (test_bit(AFS_VNODE_CB_PROMISED, &vnode->flags)) { + cbi = rcu_dereference(vnode->cb_interest); + server = rcu_dereference(cbi->server); + cb_s_break = READ_ONCE(server->cb_s_break); + + if (vnode->cb_s_break != cb_s_break || + vnode->cb_v_break != cb_v_break) { + vnode->cb_s_break = cb_s_break; + vnode->cb_v_break = cb_v_break; + need_clear = afs_cb_break_for_vsbreak; + valid = false; + } else if (test_bit(AFS_VNODE_ZAP_DATA, &vnode->flags)) { + need_clear = afs_cb_break_for_zap; + valid = false; + } else if (vnode->cb_expires_at - 10 <= now) { + need_clear = afs_cb_break_for_lapsed; + valid = false; + } else { + valid = true; + } + } else if (test_bit(AFS_VNODE_DELETED, &vnode->flags)) { + valid = true; + } else { + vnode->cb_v_break = cb_v_break; + valid = false; + } + + } while (need_seqretry(&vnode->cb_lock, seq)); + + done_seqretry(&vnode->cb_lock, seq); + + if (need_clear != afs_cb_break_no_break) { + write_seqlock(&vnode->cb_lock); + if (cb_break == vnode->cb_break) + __afs_break_callback(vnode, need_clear); + else + trace_afs_cb_miss(&vnode->fid, need_clear); + write_sequnlock(&vnode->cb_lock); + valid = false; + } + + return valid; +} + +/* * validate a vnode/inode * - there are several things we need to check * - parent dir data changes (rm, rmdir, rename, mkdir, create, link, @@ -410,7 +660,6 @@ void afs_zap_data(struct afs_vnode *vnode) */ int afs_validate(struct afs_vnode *vnode, struct key *key) { - time64_t now = ktime_get_real_seconds(); bool valid; int ret; @@ -418,36 +667,9 @@ int afs_validate(struct afs_vnode *vnode, struct key *key) vnode->fid.vid, vnode->fid.vnode, vnode->flags, key_serial(key)); - /* Quickly check the callback state. Ideally, we'd use read_seqbegin - * here, but we have no way to pass the net namespace to the RCU - * cleanup for the server record. - */ - read_seqlock_excl(&vnode->cb_lock); - - if (test_bit(AFS_VNODE_CB_PROMISED, &vnode->flags)) { - if (vnode->cb_s_break != vnode->cb_interest->server->cb_s_break || - vnode->cb_v_break != vnode->volume->cb_v_break) { - vnode->cb_s_break = vnode->cb_interest->server->cb_s_break; - vnode->cb_v_break = vnode->volume->cb_v_break; - valid = false; - } else if (vnode->status.type == AFS_FTYPE_DIR && - (!test_bit(AFS_VNODE_DIR_VALID, &vnode->flags) || - vnode->cb_expires_at - 10 <= now)) { - valid = false; - } else if (test_bit(AFS_VNODE_ZAP_DATA, &vnode->flags) || - vnode->cb_expires_at - 10 <= now) { - valid = false; - } else { - valid = true; - } - } else if (test_bit(AFS_VNODE_DELETED, &vnode->flags)) { - valid = true; - } else { - vnode->cb_v_break = vnode->volume->cb_v_break; - valid = false; - } - - read_sequnlock_excl(&vnode->cb_lock); + rcu_read_lock(); + valid = afs_check_validity(vnode); + rcu_read_unlock(); if (test_bit(AFS_VNODE_DELETED, &vnode->flags)) clear_nlink(&vnode->vfs_inode); @@ -463,7 +685,7 @@ int afs_validate(struct afs_vnode *vnode, struct key *key) * access */ if (!test_bit(AFS_VNODE_CB_PROMISED, &vnode->flags)) { _debug("not promised"); - ret = afs_fetch_status(vnode, key, false); + ret = afs_fetch_status(vnode, key, false, NULL); if (ret < 0) { if (ret == -ENOENT) { set_bit(AFS_VNODE_DELETED, &vnode->flags); @@ -534,6 +756,7 @@ int afs_drop_inode(struct inode *inode) */ void afs_evict_inode(struct inode *inode) { + struct afs_cb_interest *cbi; struct afs_vnode *vnode; vnode = AFS_FS_I(inode); @@ -550,10 +773,14 @@ void afs_evict_inode(struct inode *inode) truncate_inode_pages_final(&inode->i_data); clear_inode(inode); - if (vnode->cb_interest) { - afs_put_cb_interest(afs_i2net(inode), vnode->cb_interest); - vnode->cb_interest = NULL; + write_seqlock(&vnode->cb_lock); + cbi = rcu_dereference_protected(vnode->cb_interest, + lockdep_is_held(&vnode->cb_lock.lock)); + if (cbi) { + afs_put_cb_interest(afs_i2net(inode), cbi); + rcu_assign_pointer(vnode->cb_interest, NULL); } + write_sequnlock(&vnode->cb_lock); while (!list_empty(&vnode->wb_keys)) { struct afs_wb_key *wbk = list_entry(vnode->wb_keys.next, @@ -573,6 +800,7 @@ void afs_evict_inode(struct inode *inode) } #endif + afs_prune_wb_keys(vnode); afs_put_permits(rcu_access_pointer(vnode->permit_cache)); key_put(vnode->silly_key); vnode->silly_key = NULL; @@ -587,9 +815,10 @@ void afs_evict_inode(struct inode *inode) int afs_setattr(struct dentry *dentry, struct iattr *attr) { struct afs_fs_cursor fc; + struct afs_status_cb *scb; struct afs_vnode *vnode = AFS_FS_I(d_inode(dentry)); struct key *key; - int ret; + int ret = -ENOMEM; _enter("{%llx:%llu},{n=%pd},%x", vnode->fid.vid, vnode->fid.vnode, dentry, @@ -601,6 +830,10 @@ int afs_setattr(struct dentry *dentry, struct iattr *attr) return 0; } + scb = kzalloc(sizeof(struct afs_status_cb), GFP_KERNEL); + if (!scb) + goto error; + /* flush any dirty data outstanding on a regular file */ if (S_ISREG(vnode->vfs_inode.i_mode)) filemap_write_and_wait(vnode->vfs_inode.i_mapping); @@ -611,25 +844,33 @@ int afs_setattr(struct dentry *dentry, struct iattr *attr) key = afs_request_key(vnode->volume->cell); if (IS_ERR(key)) { ret = PTR_ERR(key); - goto error; + goto error_scb; } } ret = -ERESTARTSYS; - if (afs_begin_vnode_operation(&fc, vnode, key)) { + if (afs_begin_vnode_operation(&fc, vnode, key, false)) { + afs_dataversion_t data_version = vnode->status.data_version; + + if (attr->ia_valid & ATTR_SIZE) + data_version++; + while (afs_select_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(vnode); - afs_fs_setattr(&fc, attr); + afs_fs_setattr(&fc, attr, scb); } - afs_check_for_remote_deletion(&fc, fc.vnode); - afs_vnode_commit_status(&fc, vnode, fc.cb_break); + afs_check_for_remote_deletion(&fc, vnode); + afs_vnode_commit_status(&fc, vnode, fc.cb_break, + &data_version, scb); ret = afs_end_vnode_operation(&fc); } if (!(attr->ia_valid & ATTR_FILE)) key_put(key); +error_scb: + kfree(scb); error: _leave(" = %d", ret); return ret; diff --git a/fs/afs/internal.h b/fs/afs/internal.h index b3cd6e8ad59d..f66a3be12fd6 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -1,12 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* internal AFS stuff * * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/compiler.h> @@ -66,6 +62,8 @@ struct afs_fs_context { struct afs_iget_data { struct afs_fid fid; struct afs_volume *volume; /* volume on which resides */ + unsigned int cb_v_break; /* Pre-fetch volume break count */ + unsigned int cb_s_break; /* Pre-fetch server break count */ }; enum afs_call_state { @@ -111,8 +109,10 @@ struct afs_call { struct rxrpc_call *rxcall; /* RxRPC call handle */ struct key *key; /* security for this call */ struct afs_net *net; /* The network namespace */ - struct afs_server *cm_server; /* Server affected by incoming CM call */ + struct afs_server *server; /* The fileserver record if fs op (pins ref) */ + struct afs_vlserver *vlserver; /* The vlserver record if vl op */ struct afs_cb_interest *cbi; /* Callback interest for server used */ + struct afs_vnode *lvnode; /* vnode being locked */ void *request; /* request data (first part) */ struct address_space *mapping; /* Pages being written from */ struct iov_iter iter; /* Buffer iterator */ @@ -122,7 +122,20 @@ struct afs_call { struct bio_vec bvec[1]; }; void *buffer; /* reply receive buffer */ - void *reply[4]; /* Where to put the reply */ + union { + long ret0; /* Value to reply with instead of 0 */ + struct afs_addr_list *ret_alist; + struct afs_vldb_entry *ret_vldb; + struct afs_acl *ret_acl; + }; + struct afs_fid *out_fid; + struct afs_status_cb *out_dir_scb; + struct afs_status_cb *out_scb; + struct yfs_acl *out_yacl; + struct afs_volsync *out_volsync; + struct afs_volume_status *out_volstatus; + struct afs_read *read_request; + unsigned int server_index; pgoff_t first; /* first page in mapping to deal with */ pgoff_t last; /* last page in mapping to deal with */ atomic_t usage; @@ -131,10 +144,10 @@ struct afs_call { int error; /* error code */ u32 abort_code; /* Remote abort ID or 0 */ u32 epoch; + unsigned int max_lifespan; /* Maximum lifespan to set if not 0 */ unsigned request_size; /* size of request data */ unsigned reply_max; /* maximum size of reply */ unsigned first_offset; /* offset into mapping[first] */ - unsigned int cb_break; /* cb_break + cb_s_break before the call */ union { unsigned last_to; /* amount of mapping[last] */ unsigned count2; /* count used in unmarshalling */ @@ -145,9 +158,9 @@ struct afs_call { bool send_pages; /* T if data from mapping should be sent */ bool need_attention; /* T if RxRPC poked us */ bool async; /* T if asynchronous */ - bool ret_reply0; /* T if should return reply[0] on success */ bool upgrade; /* T to request service upgrade */ - bool want_reply_time; /* T if want reply_time */ + bool have_reply_time; /* T if have got reply_time */ + bool intr; /* T if interruptible */ u16 service_id; /* Actual service ID (after upgrade) */ unsigned int debug_id; /* Trace ID */ u32 operation_ID; /* operation ID for an incoming call */ @@ -159,8 +172,6 @@ struct afs_call { } __attribute__((packed)); __be64 tmp64; }; - afs_dataversion_t expected_version; /* Updated version expected from store */ - afs_dataversion_t expected_version_2; /* 2nd updated version expected from store */ ktime_t reply_time; /* Time of first reply packet */ }; @@ -221,7 +232,8 @@ struct afs_read { unsigned int index; /* Which page we're reading into */ unsigned int nr_pages; unsigned int offset; /* offset into current page */ - void (*page_done)(struct afs_call *, struct afs_read *); + struct afs_vnode *vnode; + void (*page_done)(struct afs_read *); struct page **pages; struct page *array[]; }; @@ -367,13 +379,13 @@ struct afs_cell { time64_t last_inactive; /* Time of last drop of usage count */ atomic_t usage; unsigned long flags; -#define AFS_CELL_FL_NOT_READY 0 /* The cell record is not ready for use */ -#define AFS_CELL_FL_NO_GC 1 /* The cell was added manually, don't auto-gc */ -#define AFS_CELL_FL_NOT_FOUND 2 /* Permanent DNS error */ -#define AFS_CELL_FL_DNS_FAIL 3 /* Failed to access DNS */ -#define AFS_CELL_FL_NO_LOOKUP_YET 4 /* Not completed first DNS lookup yet */ +#define AFS_CELL_FL_NO_GC 0 /* The cell was added manually, don't auto-gc */ +#define AFS_CELL_FL_DO_LOOKUP 1 /* DNS lookup requested */ enum afs_cell_state state; short error; + enum dns_record_source dns_source:8; /* Latest source of data from lookup */ + enum dns_lookup_status dns_status:8; /* Latest status of data from lookup */ + unsigned int dns_lookup_count; /* Counter of DNS lookups */ /* Active fileserver interaction state. */ struct list_head proc_volumes; /* procfs volume list */ @@ -502,6 +514,7 @@ struct afs_server { atomic_t usage; u32 addr_version; /* Address list version */ u32 cm_epoch; /* Server RxRPC epoch */ + unsigned int debug_id; /* Debugging ID for traces */ /* file service access */ rwlock_t fs_lock; /* access lock */ @@ -538,7 +551,10 @@ struct afs_server { struct afs_vol_interest { struct hlist_node srv_link; /* Link in server->cb_volumes */ struct hlist_head cb_interests; /* List of callback interests on the server */ - afs_volid_t vid; /* Volume ID to match */ + union { + struct rcu_head rcu; + afs_volid_t vid; /* Volume ID to match */ + }; unsigned int usage; }; @@ -550,7 +566,10 @@ struct afs_cb_interest { struct afs_vol_interest *vol_interest; struct afs_server *server; /* Server on which this interest resides */ struct super_block *sb; /* Superblock on which inodes reside */ - afs_volid_t vid; /* Volume ID to match */ + union { + struct rcu_head rcu; + afs_volid_t vid; /* Volume ID to match */ + }; refcount_t usage; }; @@ -596,7 +615,7 @@ struct afs_volume { unsigned int servers_seq; /* Incremented each time ->servers changes */ unsigned cb_v_break; /* Break-everything counter. */ - rwlock_t cb_break_lock; + rwlock_t cb_v_break_lock; afs_voltype_t type; /* type of volume */ short error; @@ -660,15 +679,13 @@ struct afs_vnode { afs_lock_type_t lock_type : 8; /* outstanding callback notification on this file */ - struct afs_cb_interest *cb_interest; /* Server on which this resides */ + struct afs_cb_interest __rcu *cb_interest; /* Server on which this resides */ unsigned int cb_s_break; /* Mass break counter on ->server */ unsigned int cb_v_break; /* Mass break counter on ->volume */ unsigned int cb_break; /* Break counter on vnode */ seqlock_t cb_lock; /* Lock for ->cb_interest, ->status, ->cb_*break */ time64_t cb_expires_at; /* time at which callback expires */ - unsigned cb_version; /* callback version */ - afs_callback_type_t cb_type; /* type of callback */ }; static inline struct fscache_cookie *afs_vnode_cache(struct afs_vnode *vnode) @@ -703,15 +720,6 @@ struct afs_permits { }; /* - * record of one of a system's set of network interfaces - */ -struct afs_interface { - struct in_addr address; /* IPv4 address bound to interface */ - struct in_addr netmask; /* netmask applied to address */ - unsigned mtu; /* MTU of interface */ -}; - -/* * Error prioritisation and accumulation. */ struct afs_error { @@ -755,6 +763,7 @@ struct afs_vl_cursor { * Cursor for iterating over a set of fileservers. */ struct afs_fs_cursor { + const struct afs_call_type *type; /* Type of call done */ struct afs_addr_cursor ac; struct afs_vnode *vnode; struct afs_server_list *server_list; /* Current server list (pins ref) */ @@ -772,6 +781,7 @@ struct afs_fs_cursor { #define AFS_FS_CURSOR_VNOVOL 0x0008 /* Set if seen VNOVOL */ #define AFS_FS_CURSOR_CUR_ONLY 0x0010 /* Set if current server only (file lock held) */ #define AFS_FS_CURSOR_NO_VSLEEP 0x0020 /* Set to prevent sleep on VBUSY, VOFFLINE, ... */ +#define AFS_FS_CURSOR_INTR 0x0040 /* Set if op is interruptible */ unsigned short nr_iterations; /* Number of server iterations */ }; @@ -826,9 +836,9 @@ extern struct fscache_cookie_def afs_vnode_cache_index_def; * callback.c */ extern void afs_init_callback_state(struct afs_server *); -extern void __afs_break_callback(struct afs_vnode *); -extern void afs_break_callback(struct afs_vnode *); -extern void afs_break_callbacks(struct afs_server *, size_t, struct afs_callback_break*); +extern void __afs_break_callback(struct afs_vnode *, enum afs_cb_break_reason); +extern void afs_break_callback(struct afs_vnode *, enum afs_cb_break_reason); +extern void afs_break_callbacks(struct afs_server *, size_t, struct afs_callback_break *); extern int afs_register_server_cb_interest(struct afs_vnode *, struct afs_server_list *, unsigned int); @@ -882,7 +892,6 @@ extern const struct address_space_operations afs_dir_aops; extern const struct dentry_operations afs_fs_dentry_operations; extern void afs_d_release(struct dentry *); -extern int afs_dir_remove_link(struct dentry *, struct key *, unsigned long, unsigned long); /* * dir_edit.c @@ -940,50 +949,48 @@ extern int afs_flock(struct file *, int, struct file_lock *); /* * fsclient.c */ -#define AFS_VNODE_NOT_YET_SET 0x01 -#define AFS_VNODE_META_CHANGED 0x02 -#define AFS_VNODE_DATA_CHANGED 0x04 -extern void afs_update_inode_from_status(struct afs_vnode *, struct afs_file_status *, - const afs_dataversion_t *, u8); - -extern int afs_fs_fetch_file_status(struct afs_fs_cursor *, struct afs_volsync *, bool); +extern int afs_fs_fetch_file_status(struct afs_fs_cursor *, struct afs_status_cb *, + struct afs_volsync *); extern int afs_fs_give_up_callbacks(struct afs_net *, struct afs_server *); -extern int afs_fs_fetch_data(struct afs_fs_cursor *, struct afs_read *); -extern int afs_fs_create(struct afs_fs_cursor *, const char *, umode_t, u64, - struct afs_fid *, struct afs_file_status *, struct afs_callback *); -extern int afs_fs_remove(struct afs_fs_cursor *, struct afs_vnode *, const char *, bool, u64); -extern int afs_fs_link(struct afs_fs_cursor *, struct afs_vnode *, const char *, u64); -extern int afs_fs_symlink(struct afs_fs_cursor *, const char *, const char *, u64, - struct afs_fid *, struct afs_file_status *); +extern int afs_fs_fetch_data(struct afs_fs_cursor *, struct afs_status_cb *, struct afs_read *); +extern int afs_fs_create(struct afs_fs_cursor *, const char *, umode_t, + struct afs_status_cb *, struct afs_fid *, struct afs_status_cb *); +extern int afs_fs_remove(struct afs_fs_cursor *, struct afs_vnode *, const char *, bool, + struct afs_status_cb *); +extern int afs_fs_link(struct afs_fs_cursor *, struct afs_vnode *, const char *, + struct afs_status_cb *, struct afs_status_cb *); +extern int afs_fs_symlink(struct afs_fs_cursor *, const char *, const char *, + struct afs_status_cb *, struct afs_fid *, struct afs_status_cb *); extern int afs_fs_rename(struct afs_fs_cursor *, const char *, - struct afs_vnode *, const char *, u64, u64); + struct afs_vnode *, const char *, + struct afs_status_cb *, struct afs_status_cb *); extern int afs_fs_store_data(struct afs_fs_cursor *, struct address_space *, - pgoff_t, pgoff_t, unsigned, unsigned); -extern int afs_fs_setattr(struct afs_fs_cursor *, struct iattr *); + pgoff_t, pgoff_t, unsigned, unsigned, struct afs_status_cb *); +extern int afs_fs_setattr(struct afs_fs_cursor *, struct iattr *, struct afs_status_cb *); extern int afs_fs_get_volume_status(struct afs_fs_cursor *, struct afs_volume_status *); -extern int afs_fs_set_lock(struct afs_fs_cursor *, afs_lock_type_t); -extern int afs_fs_extend_lock(struct afs_fs_cursor *); -extern int afs_fs_release_lock(struct afs_fs_cursor *); +extern int afs_fs_set_lock(struct afs_fs_cursor *, afs_lock_type_t, struct afs_status_cb *); +extern int afs_fs_extend_lock(struct afs_fs_cursor *, struct afs_status_cb *); +extern int afs_fs_release_lock(struct afs_fs_cursor *, struct afs_status_cb *); extern int afs_fs_give_up_all_callbacks(struct afs_net *, struct afs_server *, struct afs_addr_cursor *, struct key *); extern struct afs_call *afs_fs_get_capabilities(struct afs_net *, struct afs_server *, struct afs_addr_cursor *, struct key *, unsigned int); extern int afs_fs_inline_bulk_status(struct afs_fs_cursor *, struct afs_net *, - struct afs_fid *, struct afs_file_status *, - struct afs_callback *, unsigned int, - struct afs_volsync *); + struct afs_fid *, struct afs_status_cb *, + unsigned int, struct afs_volsync *); extern int afs_fs_fetch_status(struct afs_fs_cursor *, struct afs_net *, - struct afs_fid *, struct afs_file_status *, - struct afs_callback *, struct afs_volsync *); + struct afs_fid *, struct afs_status_cb *, + struct afs_volsync *); struct afs_acl { u32 size; u8 data[]; }; -extern struct afs_acl *afs_fs_fetch_acl(struct afs_fs_cursor *); -extern int afs_fs_store_acl(struct afs_fs_cursor *, const struct afs_acl *); +extern struct afs_acl *afs_fs_fetch_acl(struct afs_fs_cursor *, struct afs_status_cb *); +extern int afs_fs_store_acl(struct afs_fs_cursor *, const struct afs_acl *, + struct afs_status_cb *); /* * fs_probe.c @@ -995,15 +1002,20 @@ extern int afs_wait_for_fs_probes(struct afs_server_list *, unsigned long); /* * inode.c */ -extern int afs_fetch_status(struct afs_vnode *, struct key *, bool); +extern void afs_vnode_commit_status(struct afs_fs_cursor *, + struct afs_vnode *, + unsigned int, + const afs_dataversion_t *, + struct afs_status_cb *); +extern int afs_fetch_status(struct afs_vnode *, struct key *, bool, afs_access_t *); extern int afs_iget5_test(struct inode *, void *); extern struct inode *afs_iget_pseudo_dir(struct super_block *, bool); extern struct inode *afs_iget(struct super_block *, struct key *, - struct afs_fid *, struct afs_file_status *, - struct afs_callback *, + struct afs_iget_data *, struct afs_status_cb *, struct afs_cb_interest *, struct afs_vnode *); extern void afs_zap_data(struct afs_vnode *); +extern bool afs_check_validity(struct afs_vnode *); extern int afs_validate(struct afs_vnode *, struct key *); extern int afs_getattr(const struct path *, struct kstat *, u32, unsigned int); extern int afs_setattr(struct dentry *, struct iattr *); @@ -1070,12 +1082,6 @@ extern struct vfsmount *afs_d_automount(struct path *); extern void afs_mntpt_kill_timer(void); /* - * netdevices.c - */ -extern int afs_get_ipv4_interfaces(struct afs_net *, struct afs_interface *, - size_t, bool); - -/* * proc.c */ #ifdef CONFIG_PROC_FS @@ -1096,7 +1102,7 @@ static inline void afs_put_sysnames(struct afs_sysnames *sysnames) {} * rotate.c */ extern bool afs_begin_vnode_operation(struct afs_fs_cursor *, struct afs_vnode *, - struct key *); + struct key *, bool); extern bool afs_select_fileserver(struct afs_fs_cursor *); extern bool afs_select_current_fileserver(struct afs_fs_cursor *); extern int afs_end_vnode_operation(struct afs_fs_cursor *); @@ -1121,6 +1127,12 @@ extern void afs_send_simple_reply(struct afs_call *, const void *, size_t); extern int afs_extract_data(struct afs_call *, bool); extern int afs_protocol_error(struct afs_call *, int, enum afs_eproto_cause); +static inline void afs_set_fc_call(struct afs_call *call, struct afs_fs_cursor *fc) +{ + call->intr = fc->flags & AFS_FS_CURSOR_INTR; + fc->type = call->type; +} + static inline void afs_extract_begin(struct afs_call *call, void *buf, size_t size) { call->kvec[0].iov_base = buf; @@ -1201,7 +1213,8 @@ static inline void afs_set_call_complete(struct afs_call *call, */ extern void afs_put_permits(struct afs_permits *); extern void afs_clear_permits(struct afs_vnode *); -extern void afs_cache_permit(struct afs_vnode *, struct key *, unsigned int); +extern void afs_cache_permit(struct afs_vnode *, struct key *, unsigned int, + struct afs_status_cb *); extern void afs_zap_permits(struct rcu_head *); extern struct key *afs_request_key(struct afs_cell *); extern int afs_check_permit(struct afs_vnode *, struct key *, afs_access_t *); @@ -1213,17 +1226,12 @@ extern void __exit afs_clean_up_permit_cache(void); */ extern spinlock_t afs_server_peer_lock; -static inline struct afs_server *afs_get_server(struct afs_server *server) -{ - atomic_inc(&server->usage); - return server; -} - extern struct afs_server *afs_find_server(struct afs_net *, const struct sockaddr_rxrpc *); extern struct afs_server *afs_find_server_by_uuid(struct afs_net *, const uuid_t *); extern struct afs_server *afs_lookup_server(struct afs_cell *, struct key *, const uuid_t *); -extern void afs_put_server(struct afs_net *, struct afs_server *); +extern struct afs_server *afs_get_server(struct afs_server *, enum afs_server_trace); +extern void afs_put_server(struct afs_net *, struct afs_server *, enum afs_server_trace); extern void afs_manage_servers(struct work_struct *); extern void afs_servers_timer(struct timer_list *); extern void __net_exit afs_purge_servers(struct afs_net *); @@ -1327,7 +1335,6 @@ extern int afs_write_end(struct file *file, struct address_space *mapping, struct page *page, void *fsdata); extern int afs_writepage(struct page *, struct writeback_control *); extern int afs_writepages(struct address_space *, struct writeback_control *); -extern void afs_pages_written_back(struct afs_vnode *, struct afs_call *); extern ssize_t afs_file_write(struct kiocb *, struct iov_iter *); extern int afs_fsync(struct file *, loff_t, loff_t, int); extern vm_fault_t afs_page_mkwrite(struct vm_fault *vmf); @@ -1343,33 +1350,36 @@ extern ssize_t afs_listxattr(struct dentry *, char *, size_t); /* * yfsclient.c */ -extern int yfs_fs_fetch_file_status(struct afs_fs_cursor *, struct afs_volsync *, bool); -extern int yfs_fs_fetch_data(struct afs_fs_cursor *, struct afs_read *); -extern int yfs_fs_create_file(struct afs_fs_cursor *, const char *, umode_t, u64, - struct afs_fid *, struct afs_file_status *, struct afs_callback *); -extern int yfs_fs_make_dir(struct afs_fs_cursor *, const char *, umode_t, u64, - struct afs_fid *, struct afs_file_status *, struct afs_callback *); -extern int yfs_fs_remove_file2(struct afs_fs_cursor *, struct afs_vnode *, const char *, u64); -extern int yfs_fs_remove(struct afs_fs_cursor *, struct afs_vnode *, const char *, bool, u64); -extern int yfs_fs_link(struct afs_fs_cursor *, struct afs_vnode *, const char *, u64); -extern int yfs_fs_symlink(struct afs_fs_cursor *, const char *, const char *, u64, - struct afs_fid *, struct afs_file_status *); -extern int yfs_fs_rename(struct afs_fs_cursor *, const char *, - struct afs_vnode *, const char *, u64, u64); +extern int yfs_fs_fetch_file_status(struct afs_fs_cursor *, struct afs_status_cb *, + struct afs_volsync *); +extern int yfs_fs_fetch_data(struct afs_fs_cursor *, struct afs_status_cb *, struct afs_read *); +extern int yfs_fs_create_file(struct afs_fs_cursor *, const char *, umode_t, struct afs_status_cb *, + struct afs_fid *, struct afs_status_cb *); +extern int yfs_fs_make_dir(struct afs_fs_cursor *, const char *, umode_t, struct afs_status_cb *, + struct afs_fid *, struct afs_status_cb *); +extern int yfs_fs_remove_file2(struct afs_fs_cursor *, struct afs_vnode *, const char *, + struct afs_status_cb *, struct afs_status_cb *); +extern int yfs_fs_remove(struct afs_fs_cursor *, struct afs_vnode *, const char *, bool, + struct afs_status_cb *); +extern int yfs_fs_link(struct afs_fs_cursor *, struct afs_vnode *, const char *, + struct afs_status_cb *, struct afs_status_cb *); +extern int yfs_fs_symlink(struct afs_fs_cursor *, const char *, const char *, + struct afs_status_cb *, struct afs_fid *, struct afs_status_cb *); +extern int yfs_fs_rename(struct afs_fs_cursor *, const char *, struct afs_vnode *, const char *, + struct afs_status_cb *, struct afs_status_cb *); extern int yfs_fs_store_data(struct afs_fs_cursor *, struct address_space *, - pgoff_t, pgoff_t, unsigned, unsigned); -extern int yfs_fs_setattr(struct afs_fs_cursor *, struct iattr *); + pgoff_t, pgoff_t, unsigned, unsigned, struct afs_status_cb *); +extern int yfs_fs_setattr(struct afs_fs_cursor *, struct iattr *, struct afs_status_cb *); extern int yfs_fs_get_volume_status(struct afs_fs_cursor *, struct afs_volume_status *); -extern int yfs_fs_set_lock(struct afs_fs_cursor *, afs_lock_type_t); -extern int yfs_fs_extend_lock(struct afs_fs_cursor *); -extern int yfs_fs_release_lock(struct afs_fs_cursor *); +extern int yfs_fs_set_lock(struct afs_fs_cursor *, afs_lock_type_t, struct afs_status_cb *); +extern int yfs_fs_extend_lock(struct afs_fs_cursor *, struct afs_status_cb *); +extern int yfs_fs_release_lock(struct afs_fs_cursor *, struct afs_status_cb *); extern int yfs_fs_fetch_status(struct afs_fs_cursor *, struct afs_net *, - struct afs_fid *, struct afs_file_status *, - struct afs_callback *, struct afs_volsync *); + struct afs_fid *, struct afs_status_cb *, + struct afs_volsync *); extern int yfs_fs_inline_bulk_status(struct afs_fs_cursor *, struct afs_net *, - struct afs_fid *, struct afs_file_status *, - struct afs_callback *, unsigned int, - struct afs_volsync *); + struct afs_fid *, struct afs_status_cb *, + unsigned int, struct afs_volsync *); struct yfs_acl { struct afs_acl *acl; /* Dir/file/symlink ACL */ @@ -1382,8 +1392,10 @@ struct yfs_acl { }; extern void yfs_free_opaque_acl(struct yfs_acl *); -extern struct yfs_acl *yfs_fs_fetch_opaque_acl(struct afs_fs_cursor *, unsigned int); -extern int yfs_fs_store_opaque_acl2(struct afs_fs_cursor *, const struct afs_acl *); +extern struct yfs_acl *yfs_fs_fetch_opaque_acl(struct afs_fs_cursor *, struct yfs_acl *, + struct afs_status_cb *); +extern int yfs_fs_store_opaque_acl2(struct afs_fs_cursor *, const struct afs_acl *, + struct afs_status_cb *); /* * Miscellaneous inline functions. @@ -1398,20 +1410,12 @@ static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode) return &vnode->vfs_inode; } -static inline void afs_vnode_commit_status(struct afs_fs_cursor *fc, - struct afs_vnode *vnode, - unsigned int cb_break) -{ - if (fc->ac.error == 0) - afs_cache_permit(vnode, fc->key, cb_break); -} - static inline void afs_check_for_remote_deletion(struct afs_fs_cursor *fc, struct afs_vnode *vnode) { if (fc->ac.error == -ENOENT) { set_bit(AFS_VNODE_DELETED, &vnode->flags); - afs_break_callback(vnode); + afs_break_callback(vnode, afs_cb_break_for_deleted); } } diff --git a/fs/afs/main.c b/fs/afs/main.c index 107427688edd..c9c45d7078bd 100644 --- a/fs/afs/main.c +++ b/fs/afs/main.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* AFS client file system * * Copyright (C) 2002,5 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/module.h> diff --git a/fs/afs/misc.c b/fs/afs/misc.c index 7f2af061ea06..52b19e9c1535 100644 --- a/fs/afs/misc.c +++ b/fs/afs/misc.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* miscellaneous bits * * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/kernel.h> @@ -14,6 +10,7 @@ #include <linux/errno.h> #include "internal.h" #include "afs_fs.h" +#include "protocol_uae.h" /* * convert an AFS abort code to a Linux error number @@ -69,34 +66,25 @@ int afs_abort_to_error(u32 abort_code) case AFSVL_PERM: return -EACCES; case AFSVL_NOMEM: return -EREMOTEIO; - /* Unified AFS error table; ET "uae" == 0x2f6df00 */ - case 0x2f6df00: return -EPERM; - case 0x2f6df01: return -ENOENT; - case 0x2f6df04: return -EIO; - case 0x2f6df0a: return -EAGAIN; - case 0x2f6df0b: return -ENOMEM; - case 0x2f6df0c: return -EACCES; - case 0x2f6df0f: return -EBUSY; - case 0x2f6df10: return -EEXIST; - case 0x2f6df11: return -EXDEV; - case 0x2f6df12: return -ENODEV; - case 0x2f6df13: return -ENOTDIR; - case 0x2f6df14: return -EISDIR; - case 0x2f6df15: return -EINVAL; - case 0x2f6df1a: return -EFBIG; - case 0x2f6df1b: return -ENOSPC; - case 0x2f6df1d: return -EROFS; - case 0x2f6df1e: return -EMLINK; - case 0x2f6df20: return -EDOM; - case 0x2f6df21: return -ERANGE; - case 0x2f6df22: return -EDEADLK; - case 0x2f6df23: return -ENAMETOOLONG; - case 0x2f6df24: return -ENOLCK; - case 0x2f6df26: return -ENOTEMPTY; - case 0x2f6df28: return -EWOULDBLOCK; - case 0x2f6df69: return -ENOTCONN; - case 0x2f6df6c: return -ETIMEDOUT; - case 0x2f6df78: return -EDQUOT; + /* Unified AFS error table */ + case UAEPERM: return -EPERM; + case UAENOENT: return -ENOENT; + case UAEACCES: return -EACCES; + case UAEBUSY: return -EBUSY; + case UAEEXIST: return -EEXIST; + case UAENOTDIR: return -ENOTDIR; + case UAEISDIR: return -EISDIR; + case UAEFBIG: return -EFBIG; + case UAENOSPC: return -ENOSPC; + case UAEROFS: return -EROFS; + case UAEMLINK: return -EMLINK; + case UAEDEADLK: return -EDEADLK; + case UAENAMETOOLONG: return -ENAMETOOLONG; + case UAENOLCK: return -ENOLCK; + case UAENOTEMPTY: return -ENOTEMPTY; + case UAELOOP: return -ELOOP; + case UAENOMEDIUM: return -ENOMEDIUM; + case UAEDQUOT: return -EDQUOT; /* RXKAD abort codes; from include/rxrpc/packet.h. ET "RXK" == 0x1260B00 */ case RXKADINCONSISTENCY: return -EPROTO; diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c index eecd8b699186..f532d6d3bd28 100644 --- a/fs/afs/mntpt.c +++ b/fs/afs/mntpt.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* mountpoint management * * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/kernel.h> diff --git a/fs/afs/netdevices.c b/fs/afs/netdevices.c deleted file mode 100644 index 2a009d1939d7..000000000000 --- a/fs/afs/netdevices.c +++ /dev/null @@ -1,48 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* AFS network device helpers - * - * Copyright (c) 2007 Patrick McHardy <kaber@trash.net> - */ - -#include <linux/string.h> -#include <linux/rtnetlink.h> -#include <linux/inetdevice.h> -#include <linux/netdevice.h> -#include <linux/if_arp.h> -#include <net/net_namespace.h> -#include "internal.h" - -/* - * get a list of this system's interface IPv4 addresses, netmasks and MTUs - * - maxbufs must be at least 1 - * - returns the number of interface records in the buffer - */ -int afs_get_ipv4_interfaces(struct afs_net *net, struct afs_interface *bufs, - size_t maxbufs, bool wantloopback) -{ - struct net_device *dev; - struct in_device *idev; - int n = 0; - - ASSERT(maxbufs > 0); - - rtnl_lock(); - for_each_netdev(net->net, dev) { - if (dev->type == ARPHRD_LOOPBACK && !wantloopback) - continue; - idev = __in_dev_get_rtnl(dev); - if (!idev) - continue; - for_primary_ifa(idev) { - bufs[n].address.s_addr = ifa->ifa_address; - bufs[n].netmask.s_addr = ifa->ifa_mask; - bufs[n].mtu = dev->mtu; - n++; - if (n >= maxbufs) - goto out; - } endfor_ifa(idev); - } -out: - rtnl_unlock(); - return n; -} diff --git a/fs/afs/proc.c b/fs/afs/proc.c index be2ee3bbd0a9..fba2ec3a3a9c 100644 --- a/fs/afs/proc.c +++ b/fs/afs/proc.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* /proc interface for AFS * * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/slab.h> @@ -53,7 +49,7 @@ static int afs_proc_cells_show(struct seq_file *m, void *v) seq_printf(m, "%3u %6lld %2u %s\n", atomic_read(&cell->usage), cell->dns_expiry - ktime_get_real_seconds(), - vllist ? vllist->nr_servers : 0, + vllist->nr_servers, cell->name); return 0; } @@ -296,8 +292,8 @@ static int afs_proc_cell_vlservers_show(struct seq_file *m, void *v) if (v == SEQ_START_TOKEN) { seq_printf(m, "# source %s, status %s\n", - dns_record_sources[vllist->source], - dns_lookup_statuses[vllist->status]); + dns_record_sources[vllist ? vllist->source : 0], + dns_lookup_statuses[vllist ? vllist->status : 0]); return 0; } @@ -336,7 +332,7 @@ static void *afs_proc_cell_vlservers_start(struct seq_file *m, loff_t *_pos) if (pos == 0) return SEQ_START_TOKEN; - if (!vllist || pos - 1 >= vllist->nr_servers) + if (pos - 1 >= vllist->nr_servers) return NULL; return &vllist->servers[pos - 1]; diff --git a/fs/afs/protocol_uae.h b/fs/afs/protocol_uae.h new file mode 100644 index 000000000000..1b3d1060bd34 --- /dev/null +++ b/fs/afs/protocol_uae.h @@ -0,0 +1,132 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Universal AFS Error codes (UAE). + * + * Copyright (C) 2003, Daria Phoebe Brashear + * Copyright (C) 2018 Red Hat, Inc. All Rights Reserved. + */ + +enum { + UAEPERM = 0x2f6df00, /* Operation not permitted */ + UAENOENT = 0x2f6df01, /* No such file or directory */ + UAESRCH = 0x2f6df02, /* No such process */ + UAEINTR = 0x2f6df03, /* Interrupted system call */ + UAEIO = 0x2f6df04, /* I/O error */ + UAENXIO = 0x2f6df05, /* No such device or address */ + UAE2BIG = 0x2f6df06, /* Arg list too long */ + UAENOEXEC = 0x2f6df07, /* Exec format error */ + UAEBADF = 0x2f6df08, /* Bad file number */ + UAECHILD = 0x2f6df09, /* No child processes */ + UAEAGAIN = 0x2f6df0a, /* Try again */ + UAENOMEM = 0x2f6df0b, /* Out of memory */ + UAEACCES = 0x2f6df0c, /* Permission denied */ + UAEFAULT = 0x2f6df0d, /* Bad address */ + UAENOTBLK = 0x2f6df0e, /* Block device required */ + UAEBUSY = 0x2f6df0f, /* Device or resource busy */ + UAEEXIST = 0x2f6df10, /* File exists */ + UAEXDEV = 0x2f6df11, /* Cross-device link */ + UAENODEV = 0x2f6df12, /* No such device */ + UAENOTDIR = 0x2f6df13, /* Not a directory */ + UAEISDIR = 0x2f6df14, /* Is a directory */ + UAEINVAL = 0x2f6df15, /* Invalid argument */ + UAENFILE = 0x2f6df16, /* File table overflow */ + UAEMFILE = 0x2f6df17, /* Too many open files */ + UAENOTTY = 0x2f6df18, /* Not a typewriter */ + UAETXTBSY = 0x2f6df19, /* Text file busy */ + UAEFBIG = 0x2f6df1a, /* File too large */ + UAENOSPC = 0x2f6df1b, /* No space left on device */ + UAESPIPE = 0x2f6df1c, /* Illegal seek */ + UAEROFS = 0x2f6df1d, /* Read-only file system */ + UAEMLINK = 0x2f6df1e, /* Too many links */ + UAEPIPE = 0x2f6df1f, /* Broken pipe */ + UAEDOM = 0x2f6df20, /* Math argument out of domain of func */ + UAERANGE = 0x2f6df21, /* Math result not representable */ + UAEDEADLK = 0x2f6df22, /* Resource deadlock would occur */ + UAENAMETOOLONG = 0x2f6df23, /* File name too long */ + UAENOLCK = 0x2f6df24, /* No record locks available */ + UAENOSYS = 0x2f6df25, /* Function not implemented */ + UAENOTEMPTY = 0x2f6df26, /* Directory not empty */ + UAELOOP = 0x2f6df27, /* Too many symbolic links encountered */ + UAEWOULDBLOCK = 0x2f6df28, /* Operation would block */ + UAENOMSG = 0x2f6df29, /* No message of desired type */ + UAEIDRM = 0x2f6df2a, /* Identifier removed */ + UAECHRNG = 0x2f6df2b, /* Channel number out of range */ + UAEL2NSYNC = 0x2f6df2c, /* Level 2 not synchronized */ + UAEL3HLT = 0x2f6df2d, /* Level 3 halted */ + UAEL3RST = 0x2f6df2e, /* Level 3 reset */ + UAELNRNG = 0x2f6df2f, /* Link number out of range */ + UAEUNATCH = 0x2f6df30, /* Protocol driver not attached */ + UAENOCSI = 0x2f6df31, /* No CSI structure available */ + UAEL2HLT = 0x2f6df32, /* Level 2 halted */ + UAEBADE = 0x2f6df33, /* Invalid exchange */ + UAEBADR = 0x2f6df34, /* Invalid request descriptor */ + UAEXFULL = 0x2f6df35, /* Exchange full */ + UAENOANO = 0x2f6df36, /* No anode */ + UAEBADRQC = 0x2f6df37, /* Invalid request code */ + UAEBADSLT = 0x2f6df38, /* Invalid slot */ + UAEBFONT = 0x2f6df39, /* Bad font file format */ + UAENOSTR = 0x2f6df3a, /* Device not a stream */ + UAENODATA = 0x2f6df3b, /* No data available */ + UAETIME = 0x2f6df3c, /* Timer expired */ + UAENOSR = 0x2f6df3d, /* Out of streams resources */ + UAENONET = 0x2f6df3e, /* Machine is not on the network */ + UAENOPKG = 0x2f6df3f, /* Package not installed */ + UAEREMOTE = 0x2f6df40, /* Object is remote */ + UAENOLINK = 0x2f6df41, /* Link has been severed */ + UAEADV = 0x2f6df42, /* Advertise error */ + UAESRMNT = 0x2f6df43, /* Srmount error */ + UAECOMM = 0x2f6df44, /* Communication error on send */ + UAEPROTO = 0x2f6df45, /* Protocol error */ + UAEMULTIHOP = 0x2f6df46, /* Multihop attempted */ + UAEDOTDOT = 0x2f6df47, /* RFS specific error */ + UAEBADMSG = 0x2f6df48, /* Not a data message */ + UAEOVERFLOW = 0x2f6df49, /* Value too large for defined data type */ + UAENOTUNIQ = 0x2f6df4a, /* Name not unique on network */ + UAEBADFD = 0x2f6df4b, /* File descriptor in bad state */ + UAEREMCHG = 0x2f6df4c, /* Remote address changed */ + UAELIBACC = 0x2f6df4d, /* Can not access a needed shared library */ + UAELIBBAD = 0x2f6df4e, /* Accessing a corrupted shared library */ + UAELIBSCN = 0x2f6df4f, /* .lib section in a.out corrupted */ + UAELIBMAX = 0x2f6df50, /* Attempting to link in too many shared libraries */ + UAELIBEXEC = 0x2f6df51, /* Cannot exec a shared library directly */ + UAEILSEQ = 0x2f6df52, /* Illegal byte sequence */ + UAERESTART = 0x2f6df53, /* Interrupted system call should be restarted */ + UAESTRPIPE = 0x2f6df54, /* Streams pipe error */ + UAEUSERS = 0x2f6df55, /* Too many users */ + UAENOTSOCK = 0x2f6df56, /* Socket operation on non-socket */ + UAEDESTADDRREQ = 0x2f6df57, /* Destination address required */ + UAEMSGSIZE = 0x2f6df58, /* Message too long */ + UAEPROTOTYPE = 0x2f6df59, /* Protocol wrong type for socket */ + UAENOPROTOOPT = 0x2f6df5a, /* Protocol not available */ + UAEPROTONOSUPPORT = 0x2f6df5b, /* Protocol not supported */ + UAESOCKTNOSUPPORT = 0x2f6df5c, /* Socket type not supported */ + UAEOPNOTSUPP = 0x2f6df5d, /* Operation not supported on transport endpoint */ + UAEPFNOSUPPORT = 0x2f6df5e, /* Protocol family not supported */ + UAEAFNOSUPPORT = 0x2f6df5f, /* Address family not supported by protocol */ + UAEADDRINUSE = 0x2f6df60, /* Address already in use */ + UAEADDRNOTAVAIL = 0x2f6df61, /* Cannot assign requested address */ + UAENETDOWN = 0x2f6df62, /* Network is down */ + UAENETUNREACH = 0x2f6df63, /* Network is unreachable */ + UAENETRESET = 0x2f6df64, /* Network dropped connection because of reset */ + UAECONNABORTED = 0x2f6df65, /* Software caused connection abort */ + UAECONNRESET = 0x2f6df66, /* Connection reset by peer */ + UAENOBUFS = 0x2f6df67, /* No buffer space available */ + UAEISCONN = 0x2f6df68, /* Transport endpoint is already connected */ + UAENOTCONN = 0x2f6df69, /* Transport endpoint is not connected */ + UAESHUTDOWN = 0x2f6df6a, /* Cannot send after transport endpoint shutdown */ + UAETOOMANYREFS = 0x2f6df6b, /* Too many references: cannot splice */ + UAETIMEDOUT = 0x2f6df6c, /* Connection timed out */ + UAECONNREFUSED = 0x2f6df6d, /* Connection refused */ + UAEHOSTDOWN = 0x2f6df6e, /* Host is down */ + UAEHOSTUNREACH = 0x2f6df6f, /* No route to host */ + UAEALREADY = 0x2f6df70, /* Operation already in progress */ + UAEINPROGRESS = 0x2f6df71, /* Operation now in progress */ + UAESTALE = 0x2f6df72, /* Stale NFS file handle */ + UAEUCLEAN = 0x2f6df73, /* Structure needs cleaning */ + UAENOTNAM = 0x2f6df74, /* Not a XENIX named type file */ + UAENAVAIL = 0x2f6df75, /* No XENIX semaphores available */ + UAEISNAM = 0x2f6df76, /* Is a named type file */ + UAEREMOTEIO = 0x2f6df77, /* Remote I/O error */ + UAEDQUOT = 0x2f6df78, /* Quota exceeded */ + UAENOMEDIUM = 0x2f6df79, /* No medium found */ + UAEMEDIUMTYPE = 0x2f6df7a, /* Wrong medium type */ +}; diff --git a/fs/afs/protocol_yfs.h b/fs/afs/protocol_yfs.h index 915b9d10cdf3..32be9c698348 100644 --- a/fs/afs/protocol_yfs.h +++ b/fs/afs/protocol_yfs.h @@ -1,12 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* YFS protocol bits * * Copyright (C) 2018 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. */ #define YFS_FS_SERVICE 2500 diff --git a/fs/afs/rotate.c b/fs/afs/rotate.c index c3ae324781f8..172ba569cd60 100644 --- a/fs/afs/rotate.c +++ b/fs/afs/rotate.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* Handle fileserver selection and rotation. * * Copyright (C) 2017 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. */ #include <linux/kernel.h> @@ -25,7 +21,7 @@ * them here also using the io_lock. */ bool afs_begin_vnode_operation(struct afs_fs_cursor *fc, struct afs_vnode *vnode, - struct key *key) + struct key *key, bool intr) { memset(fc, 0, sizeof(*fc)); fc->vnode = vnode; @@ -33,10 +29,15 @@ bool afs_begin_vnode_operation(struct afs_fs_cursor *fc, struct afs_vnode *vnode fc->ac.error = SHRT_MAX; fc->error = -EDESTADDRREQ; - if (mutex_lock_interruptible(&vnode->io_lock) < 0) { - fc->error = -EINTR; - fc->flags |= AFS_FS_CURSOR_STOP; - return false; + if (intr) { + fc->flags |= AFS_FS_CURSOR_INTR; + if (mutex_lock_interruptible(&vnode->io_lock) < 0) { + fc->error = -EINTR; + fc->flags |= AFS_FS_CURSOR_STOP; + return false; + } + } else { + mutex_lock(&vnode->io_lock); } if (vnode->lock_state != AFS_VNODE_LOCK_NONE) @@ -61,7 +62,8 @@ static bool afs_start_fs_iteration(struct afs_fs_cursor *fc, fc->untried = (1UL << fc->server_list->nr_servers) - 1; fc->index = READ_ONCE(fc->server_list->preferred); - cbi = vnode->cb_interest; + cbi = rcu_dereference_protected(vnode->cb_interest, + lockdep_is_held(&vnode->io_lock)); if (cbi) { /* See if the vnode's preferred record is still available */ for (i = 0; i < fc->server_list->nr_servers; i++) { @@ -82,8 +84,8 @@ static bool afs_start_fs_iteration(struct afs_fs_cursor *fc, /* Note that the callback promise is effectively broken */ write_seqlock(&vnode->cb_lock); - ASSERTCMP(cbi, ==, vnode->cb_interest); - vnode->cb_interest = NULL; + ASSERTCMP(cbi, ==, rcu_access_pointer(vnode->cb_interest)); + rcu_assign_pointer(vnode->cb_interest, NULL); if (test_and_clear_bit(AFS_VNODE_CB_PROMISED, &vnode->flags)) vnode->cb_break++; write_sequnlock(&vnode->cb_lock); @@ -118,10 +120,14 @@ static void afs_busy(struct afs_volume *volume, u32 abort_code) */ static bool afs_sleep_and_retry(struct afs_fs_cursor *fc) { - msleep_interruptible(1000); - if (signal_pending(current)) { - fc->error = -ERESTARTSYS; - return false; + if (fc->flags & AFS_FS_CURSOR_INTR) { + msleep_interruptible(1000); + if (signal_pending(current)) { + fc->error = -ERESTARTSYS; + return false; + } + } else { + msleep(1000); } return true; @@ -408,7 +414,9 @@ selected_server: if (error < 0) goto failed_set_error; - fc->cbi = afs_get_cb_interest(vnode->cb_interest); + fc->cbi = afs_get_cb_interest( + rcu_dereference_protected(vnode->cb_interest, + lockdep_is_held(&vnode->io_lock))); read_lock(&server->fs_lock); alist = rcu_dereference_protected(server->addresses, @@ -459,6 +467,8 @@ no_more_servers: s->probe.abort_code); } + error = e.error; + failed_set_error: fc->error = error; failed: @@ -476,12 +486,15 @@ failed: bool afs_select_current_fileserver(struct afs_fs_cursor *fc) { struct afs_vnode *vnode = fc->vnode; - struct afs_cb_interest *cbi = vnode->cb_interest; + struct afs_cb_interest *cbi; struct afs_addr_list *alist; int error = fc->ac.error; _enter(""); + cbi = rcu_dereference_protected(vnode->cb_interest, + lockdep_is_held(&vnode->io_lock)); + switch (error) { case SHRT_MAX: if (!cbi) { @@ -490,7 +503,7 @@ bool afs_select_current_fileserver(struct afs_fs_cursor *fc) return false; } - fc->cbi = afs_get_cb_interest(vnode->cb_interest); + fc->cbi = afs_get_cb_interest(cbi); read_lock(&cbi->server->fs_lock); alist = rcu_dereference_protected(cbi->server->addresses, diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c index a34a89c75c6a..0e5269374ac1 100644 --- a/fs/afs/rxrpc.c +++ b/fs/afs/rxrpc.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* Maintain an RxRPC server socket to do AFS communications through * * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/slab.h> @@ -188,7 +184,7 @@ void afs_put_call(struct afs_call *call) if (call->type->destructor) call->type->destructor(call); - afs_put_server(call->net, call->cm_server); + afs_put_server(call->net, call->server, afs_server_trace_put_call); afs_put_cb_interest(call->net, call->cbi); afs_put_addrlist(call->alist); kfree(call->request); @@ -417,6 +413,7 @@ void afs_make_call(struct afs_addr_cursor *ac, struct afs_call *call, gfp_t gfp) afs_wake_up_async_call : afs_wake_up_call_waiter), call->upgrade, + call->intr, call->debug_id); if (IS_ERR(rxcall)) { ret = PTR_ERR(rxcall); @@ -426,6 +423,10 @@ void afs_make_call(struct afs_addr_cursor *ac, struct afs_call *call, gfp_t gfp) call->rxcall = rxcall; + if (call->max_lifespan) + rxrpc_kernel_set_max_life(call->net->socket, rxcall, + call->max_lifespan); + /* send the request */ iov[0].iov_base = call->request; iov[0].iov_len = call->request_size; @@ -529,11 +530,11 @@ static void afs_deliver_to_call(struct afs_call *call) return; } - if (call->want_reply_time && + if (!call->have_reply_time && rxrpc_kernel_get_reply_time(call->net->socket, call->rxcall, &call->reply_time)) - call->want_reply_time = false; + call->have_reply_time = true; ret = call->type->deliver(call); state = READ_ONCE(call->state); @@ -648,7 +649,7 @@ long afs_wait_for_call_to_complete(struct afs_call *call, break; } - if (timeout == 0 && + if (call->intr && timeout == 0 && life == last_life && signal_pending(current)) { if (stalled) break; @@ -691,10 +692,9 @@ long afs_wait_for_call_to_complete(struct afs_call *call, ret = ac->error; switch (ret) { case 0: - if (call->ret_reply0) { - ret = (long)call->reply[0]; - call->reply[0] = NULL; - } + ret = call->ret0; + call->ret0 = 0; + /* Fall through */ case -ECONNABORTED: ac->responded = true; diff --git a/fs/afs/security.c b/fs/afs/security.c index 5f58a9a17e69..71e71c07568f 100644 --- a/fs/afs/security.c +++ b/fs/afs/security.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* AFS security handling * * Copyright (C) 2007, 2017 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/init.h> @@ -87,11 +83,9 @@ void afs_clear_permits(struct afs_vnode *vnode) permits = rcu_dereference_protected(vnode->permit_cache, lockdep_is_held(&vnode->lock)); RCU_INIT_POINTER(vnode->permit_cache, NULL); - vnode->cb_break++; spin_unlock(&vnode->lock); - if (permits) - afs_put_permits(permits); + afs_put_permits(permits); } /* @@ -118,10 +112,10 @@ static void afs_hash_permits(struct afs_permits *permits) * as the ACL *may* have changed. */ void afs_cache_permit(struct afs_vnode *vnode, struct key *key, - unsigned int cb_break) + unsigned int cb_break, struct afs_status_cb *scb) { struct afs_permits *permits, *xpermits, *replacement, *zap, *new = NULL; - afs_access_t caller_access = READ_ONCE(vnode->status.caller_access); + afs_access_t caller_access = scb->status.caller_access; size_t size = 0; bool changed = false; int i, j; @@ -148,7 +142,7 @@ void afs_cache_permit(struct afs_vnode *vnode, struct key *key, } if (afs_cb_is_broken(cb_break, vnode, - vnode->cb_interest)) { + rcu_dereference(vnode->cb_interest))) { changed = true; break; } @@ -178,7 +172,7 @@ void afs_cache_permit(struct afs_vnode *vnode, struct key *key, } } - if (afs_cb_is_broken(cb_break, vnode, vnode->cb_interest)) + if (afs_cb_is_broken(cb_break, vnode, rcu_dereference(vnode->cb_interest))) goto someone_else_changed_it; /* We need a ref on any permits list we want to copy as we'll have to @@ -255,14 +249,16 @@ found: kfree(new); + rcu_read_lock(); spin_lock(&vnode->lock); zap = rcu_access_pointer(vnode->permit_cache); - if (!afs_cb_is_broken(cb_break, vnode, vnode->cb_interest) && + if (!afs_cb_is_broken(cb_break, vnode, rcu_dereference(vnode->cb_interest)) && zap == permits) rcu_assign_pointer(vnode->permit_cache, replacement); else zap = replacement; spin_unlock(&vnode->lock); + rcu_read_unlock(); afs_put_permits(zap); out_put: afs_put_permits(permits); @@ -322,13 +318,12 @@ int afs_check_permit(struct afs_vnode *vnode, struct key *key, */ _debug("no valid permit"); - ret = afs_fetch_status(vnode, key, false); + ret = afs_fetch_status(vnode, key, false, _access); if (ret < 0) { *_access = 0; _leave(" = %d", ret); return ret; } - *_access = vnode->status.caller_access; } _leave(" = 0 [access %x]", *_access); diff --git a/fs/afs/server.c b/fs/afs/server.c index 65b33b6da48b..64d440aaabc0 100644 --- a/fs/afs/server.c +++ b/fs/afs/server.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* AFS server record management * * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/sched.h> @@ -17,6 +13,7 @@ static unsigned afs_server_gc_delay = 10; /* Server record timeout in seconds */ static unsigned afs_server_update_delay = 30; /* Time till VLDB recheck in secs */ +static atomic_t afs_server_debug_id; static void afs_inc_servers_outstanding(struct afs_net *net) { @@ -51,7 +48,7 @@ struct afs_server *afs_find_server(struct afs_net *net, do { if (server) - afs_put_server(net, server); + afs_put_server(net, server, afs_server_trace_put_find_rsq); server = NULL; read_seqbegin_or_lock(&net->fs_addr_lock, &seq); @@ -116,7 +113,7 @@ struct afs_server *afs_find_server_by_uuid(struct afs_net *net, const uuid_t *uu * changes. */ if (server) - afs_put_server(net, server); + afs_put_server(net, server, afs_server_trace_put_uuid_rsq); server = NULL; read_seqbegin_or_lock(&net->fs_lock, &seq); @@ -131,7 +128,7 @@ struct afs_server *afs_find_server_by_uuid(struct afs_net *net, const uuid_t *uu } else if (diff > 0) { p = p->rb_right; } else { - afs_get_server(server); + afs_get_server(server, afs_server_trace_get_by_uuid); break; } @@ -202,7 +199,7 @@ static struct afs_server *afs_install_server(struct afs_net *net, ret = 0; exists: - afs_get_server(server); + afs_get_server(server, afs_server_trace_get_install); write_sequnlock(&net->fs_lock); return server; } @@ -223,6 +220,7 @@ static struct afs_server *afs_alloc_server(struct afs_net *net, goto enomem; atomic_set(&server->usage, 1); + server->debug_id = atomic_inc_return(&afs_server_debug_id); RCU_INIT_POINTER(server->addresses, alist); server->addr_version = alist->version; server->uuid = *uuid; @@ -234,6 +232,7 @@ static struct afs_server *afs_alloc_server(struct afs_net *net, spin_lock_init(&server->probe_lock); afs_inc_servers_outstanding(net); + trace_afs_server(server, 1, afs_server_trace_alloc); _leave(" = %p", server); return server; @@ -329,9 +328,22 @@ void afs_servers_timer(struct timer_list *timer) } /* + * Get a reference on a server object. + */ +struct afs_server *afs_get_server(struct afs_server *server, + enum afs_server_trace reason) +{ + unsigned int u = atomic_inc_return(&server->usage); + + trace_afs_server(server, u, reason); + return server; +} + +/* * Release a reference on a server record. */ -void afs_put_server(struct afs_net *net, struct afs_server *server) +void afs_put_server(struct afs_net *net, struct afs_server *server, + enum afs_server_trace reason) { unsigned int usage; @@ -342,7 +354,7 @@ void afs_put_server(struct afs_net *net, struct afs_server *server) usage = atomic_dec_return(&server->usage); - _enter("{%u}", usage); + trace_afs_server(server, usage, reason); if (likely(usage > 0)) return; @@ -354,6 +366,8 @@ static void afs_server_rcu(struct rcu_head *rcu) { struct afs_server *server = container_of(rcu, struct afs_server, rcu); + trace_afs_server(server, atomic_read(&server->usage), + afs_server_trace_free); afs_put_addrlist(rcu_access_pointer(server->addresses)); kfree(server); } @@ -369,7 +383,9 @@ static void afs_destroy_server(struct afs_net *net, struct afs_server *server) .index = alist->preferred, .error = 0, }; - _enter("%p", server); + + trace_afs_server(server, atomic_read(&server->usage), + afs_server_trace_give_up_cb); if (test_bit(AFS_SERVER_FL_MAY_HAVE_CB, &server->flags)) afs_fs_give_up_all_callbacks(net, server, &ac, NULL); @@ -377,6 +393,8 @@ static void afs_destroy_server(struct afs_net *net, struct afs_server *server) wait_var_event(&server->probe_outstanding, atomic_read(&server->probe_outstanding) == 0); + trace_afs_server(server, atomic_read(&server->usage), + afs_server_trace_destroy); call_rcu(&server->rcu, afs_server_rcu); afs_dec_servers_outstanding(net); } @@ -396,6 +414,7 @@ static void afs_gc_servers(struct afs_net *net, struct afs_server *gc_list) write_seqlock(&net->fs_lock); usage = 1; deleted = atomic_try_cmpxchg(&server->usage, &usage, 0); + trace_afs_server(server, usage, afs_server_trace_gc); if (deleted) { rb_erase(&server->uuid_rb, &net->fs_servers); hlist_del_rcu(&server->proc_link); @@ -518,11 +537,20 @@ static noinline bool afs_update_server_record(struct afs_fs_cursor *fc, struct a _enter(""); + trace_afs_server(server, atomic_read(&server->usage), afs_server_trace_update); + alist = afs_vl_lookup_addrs(fc->vnode->volume->cell, fc->key, &server->uuid); if (IS_ERR(alist)) { - fc->ac.error = PTR_ERR(alist); - _leave(" = f [%d]", fc->ac.error); + if ((PTR_ERR(alist) == -ERESTARTSYS || + PTR_ERR(alist) == -EINTR) && + !(fc->flags & AFS_FS_CURSOR_INTR) && + server->addresses) { + _leave(" = t [intr]"); + return true; + } + fc->error = PTR_ERR(alist); + _leave(" = f [%d]", fc->error); return false; } @@ -574,7 +602,11 @@ retry: ret = wait_on_bit(&server->flags, AFS_SERVER_FL_UPDATING, TASK_INTERRUPTIBLE); if (ret == -ERESTARTSYS) { - fc->ac.error = ret; + if (!(fc->flags & AFS_FS_CURSOR_INTR) && server->addresses) { + _leave(" = t [intr]"); + return true; + } + fc->error = ret; _leave(" = f [intr]"); return false; } diff --git a/fs/afs/server_list.c b/fs/afs/server_list.c index 155dc14caef9..888d91d195d9 100644 --- a/fs/afs/server_list.c +++ b/fs/afs/server_list.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* AFS fileserver list management. * * Copyright (C) 2017 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/kernel.h> @@ -20,7 +16,8 @@ void afs_put_serverlist(struct afs_net *net, struct afs_server_list *slist) if (slist && refcount_dec_and_test(&slist->usage)) { for (i = 0; i < slist->nr_servers; i++) { afs_put_cb_interest(net, slist->servers[i].cb_interest); - afs_put_server(net, slist->servers[i].server); + afs_put_server(net, slist->servers[i].server, + afs_server_trace_put_slist); } kfree(slist); } @@ -71,7 +68,8 @@ struct afs_server_list *afs_alloc_server_list(struct afs_cell *cell, break; if (j < slist->nr_servers) { if (slist->servers[j].server == server) { - afs_put_server(cell->net, server); + afs_put_server(cell->net, server, + afs_server_trace_put_slist_isort); continue; } diff --git a/fs/afs/super.c b/fs/afs/super.c index 783c68cd1a35..f18911e8d770 100644 --- a/fs/afs/super.c +++ b/fs/afs/super.c @@ -426,7 +426,7 @@ static int afs_set_super(struct super_block *sb, struct fs_context *fc) static int afs_fill_super(struct super_block *sb, struct afs_fs_context *ctx) { struct afs_super_info *as = AFS_FS_S(sb); - struct afs_fid fid; + struct afs_iget_data iget_data; struct inode *inode = NULL; int ret; @@ -451,11 +451,13 @@ static int afs_fill_super(struct super_block *sb, struct afs_fs_context *ctx) } else { sprintf(sb->s_id, "%llu", as->volume->vid); afs_activate_volume(as->volume); - fid.vid = as->volume->vid; - fid.vnode = 1; - fid.vnode_hi = 0; - fid.unique = 1; - inode = afs_iget(sb, ctx->key, &fid, NULL, NULL, NULL, NULL); + iget_data.fid.vid = as->volume->vid; + iget_data.fid.vnode = 1; + iget_data.fid.vnode_hi = 0; + iget_data.fid.unique = 1; + iget_data.cb_v_break = as->volume->cb_v_break; + iget_data.cb_s_break = 0; + inode = afs_iget(sb, ctx->key, &iget_data, NULL, NULL, NULL); } if (IS_ERR(inode)) @@ -677,13 +679,12 @@ static struct inode *afs_alloc_inode(struct super_block *sb) vnode->volume = NULL; vnode->lock_key = NULL; vnode->permit_cache = NULL; - vnode->cb_interest = NULL; + RCU_INIT_POINTER(vnode->cb_interest, NULL); #ifdef CONFIG_AFS_FSCACHE vnode->cache = NULL; #endif vnode->flags = 1 << AFS_VNODE_UNSET; - vnode->cb_type = 0; vnode->lock_state = AFS_VNODE_LOCK_NONE; init_rwsem(&vnode->rmdir_lock); @@ -708,7 +709,7 @@ static void afs_destroy_inode(struct inode *inode) _debug("DESTROY INODE %p", inode); - ASSERTCMP(vnode->cb_interest, ==, NULL); + ASSERTCMP(rcu_access_pointer(vnode->cb_interest), ==, NULL); atomic_dec(&afs_count_active_inodes); } @@ -741,7 +742,7 @@ static int afs_statfs(struct dentry *dentry, struct kstatfs *buf) return PTR_ERR(key); ret = -ERESTARTSYS; - if (afs_begin_vnode_operation(&fc, vnode, key)) { + if (afs_begin_vnode_operation(&fc, vnode, key, true)) { fc.flags |= AFS_FS_CURSOR_NO_VSLEEP; while (afs_select_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(vnode); @@ -749,7 +750,6 @@ static int afs_statfs(struct dentry *dentry, struct kstatfs *buf) } afs_check_for_remote_deletion(&fc, fc.vnode); - afs_vnode_commit_status(&fc, vnode, fc.cb_break); ret = afs_end_vnode_operation(&fc); } diff --git a/fs/afs/vl_list.c b/fs/afs/vl_list.c index b4f1a84519b9..21eb0c0be912 100644 --- a/fs/afs/vl_list.c +++ b/fs/afs/vl_list.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* AFS vlserver list management. * * Copyright (C) 2018 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/kernel.h> @@ -232,18 +228,16 @@ struct afs_vlserver_list *afs_extract_vlserver_list(struct afs_cell *cell, if (bs.status > NR__dns_lookup_status) bs.status = NR__dns_lookup_status; + /* See if we can update an old server record */ server = NULL; - if (previous) { - /* See if we can update an old server record */ - for (i = 0; i < previous->nr_servers; i++) { - struct afs_vlserver *p = previous->servers[i].server; - - if (p->name_len == bs.name_len && - p->port == bs.port && - strncasecmp(b, p->name, bs.name_len) == 0) { - server = afs_get_vlserver(p); - break; - } + for (i = 0; i < previous->nr_servers; i++) { + struct afs_vlserver *p = previous->servers[i].server; + + if (p->name_len == bs.name_len && + p->port == bs.port && + strncasecmp(b, p->name, bs.name_len) == 0) { + server = afs_get_vlserver(p); + break; } } diff --git a/fs/afs/vl_probe.c b/fs/afs/vl_probe.c index b05e0de04f42..858498cc1b05 100644 --- a/fs/afs/vl_probe.c +++ b/fs/afs/vl_probe.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* AFS vlserver probing * * Copyright (C) 2018 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. */ #include <linux/sched.h> @@ -33,8 +29,8 @@ static bool afs_vl_probe_done(struct afs_vlserver *server) void afs_vlserver_probe_result(struct afs_call *call) { struct afs_addr_list *alist = call->alist; - struct afs_vlserver *server = call->reply[0]; - unsigned int server_index = (long)call->reply[1]; + struct afs_vlserver *server = call->vlserver; + unsigned int server_index = call->server_index; unsigned int index = call->addr_ix; unsigned int rtt = UINT_MAX; bool have_result = false; diff --git a/fs/afs/vl_rotate.c b/fs/afs/vl_rotate.c index 7adde83a0648..9a5ce9687779 100644 --- a/fs/afs/vl_rotate.c +++ b/fs/afs/vl_rotate.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* Handle vlserver selection and rotation. * * Copyright (C) 2018 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. */ #include <linux/kernel.h> @@ -43,11 +39,29 @@ bool afs_begin_vlserver_operation(struct afs_vl_cursor *vc, struct afs_cell *cel static bool afs_start_vl_iteration(struct afs_vl_cursor *vc) { struct afs_cell *cell = vc->cell; + unsigned int dns_lookup_count; + + if (cell->dns_source == DNS_RECORD_UNAVAILABLE || + cell->dns_expiry <= ktime_get_real_seconds()) { + dns_lookup_count = smp_load_acquire(&cell->dns_lookup_count); + set_bit(AFS_CELL_FL_DO_LOOKUP, &cell->flags); + queue_work(afs_wq, &cell->manager); + + if (cell->dns_source == DNS_RECORD_UNAVAILABLE) { + if (wait_var_event_interruptible( + &cell->dns_lookup_count, + smp_load_acquire(&cell->dns_lookup_count) + != dns_lookup_count) < 0) { + vc->error = -ERESTARTSYS; + return false; + } + } - if (wait_on_bit(&cell->flags, AFS_CELL_FL_NO_LOOKUP_YET, - TASK_INTERRUPTIBLE)) { - vc->error = -ERESTARTSYS; - return false; + /* Status load is ordered after lookup counter load */ + if (cell->dns_source == DNS_RECORD_UNAVAILABLE) { + vc->error = -EDESTADDRREQ; + return false; + } } read_lock(&cell->vl_servers_lock); @@ -55,7 +69,7 @@ static bool afs_start_vl_iteration(struct afs_vl_cursor *vc) rcu_dereference_protected(cell->vl_servers, lockdep_is_held(&cell->vl_servers_lock))); read_unlock(&cell->vl_servers_lock); - if (!vc->server_list || !vc->server_list->nr_servers) + if (!vc->server_list->nr_servers) return false; vc->untried = (1UL << vc->server_list->nr_servers) - 1; diff --git a/fs/afs/vlclient.c b/fs/afs/vlclient.c index dd9ba4e96fb3..d7e0fd3c00df 100644 --- a/fs/afs/vlclient.c +++ b/fs/afs/vlclient.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* AFS Volume Location Service client * * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/gfp.h> @@ -34,7 +30,7 @@ static int afs_deliver_vl_get_entry_by_name_u(struct afs_call *call) /* unmarshall the reply once we've received all of it */ uvldb = call->buffer; - entry = call->reply[0]; + entry = call->ret_vldb; nr_servers = ntohl(uvldb->nServers); if (nr_servers > AFS_NMAXNSERVERS) @@ -110,7 +106,7 @@ static int afs_deliver_vl_get_entry_by_name_u(struct afs_call *call) static void afs_destroy_vl_get_entry_by_name_u(struct afs_call *call) { - kfree(call->reply[0]); + kfree(call->ret_vldb); afs_flat_call_destructor(call); } @@ -155,8 +151,8 @@ struct afs_vldb_entry *afs_vl_get_entry_by_name_u(struct afs_vl_cursor *vc, } call->key = vc->key; - call->reply[0] = entry; - call->ret_reply0 = true; + call->ret_vldb = entry; + call->max_lifespan = AFS_VL_MAX_LIFESPAN; /* Marshall the parameters */ bp = call->request; @@ -214,7 +210,7 @@ static int afs_deliver_vl_get_addrs_u(struct afs_call *call) if (!alist) return -ENOMEM; alist->version = uniquifier; - call->reply[0] = alist; + call->ret_alist = alist; call->count = count; call->count2 = nentries; call->unmarshall++; @@ -229,7 +225,7 @@ static int afs_deliver_vl_get_addrs_u(struct afs_call *call) if (ret < 0) return ret; - alist = call->reply[0]; + alist = call->ret_alist; bp = call->buffer; count = min(call->count, 4U); for (i = 0; i < count; i++) @@ -249,8 +245,7 @@ static int afs_deliver_vl_get_addrs_u(struct afs_call *call) static void afs_vl_get_addrs_u_destructor(struct afs_call *call) { - afs_put_server(call->net, (struct afs_server *)call->reply[0]); - kfree(call->reply[1]); + afs_put_addrlist(call->ret_alist); return afs_flat_call_destructor(call); } @@ -287,8 +282,8 @@ struct afs_addr_list *afs_vl_get_addrs_u(struct afs_vl_cursor *vc, return ERR_PTR(-ENOMEM); call->key = vc->key; - call->reply[0] = NULL; - call->ret_reply0 = true; + call->ret_alist = NULL; + call->max_lifespan = AFS_VL_MAX_LIFESPAN; /* Marshall the parameters */ bp = call->request; @@ -358,9 +353,7 @@ static int afs_deliver_vl_get_capabilities(struct afs_call *call) static void afs_destroy_vl_get_capabilities(struct afs_call *call) { - struct afs_vlserver *server = call->reply[0]; - - afs_put_vlserver(call->net, server); + afs_put_vlserver(call->net, call->vlserver); afs_flat_call_destructor(call); } @@ -398,11 +391,11 @@ struct afs_call *afs_vl_get_capabilities(struct afs_net *net, return ERR_PTR(-ENOMEM); call->key = key; - call->reply[0] = afs_get_vlserver(server); - call->reply[1] = (void *)(long)server_index; + call->vlserver = afs_get_vlserver(server); + call->server_index = server_index; call->upgrade = true; - call->want_reply_time = true; call->async = true; + call->max_lifespan = AFS_PROBE_MAX_LIFESPAN; /* marshall the parameters */ bp = call->request; @@ -460,7 +453,7 @@ static int afs_deliver_yfsvl_get_endpoints(struct afs_call *call) if (!alist) return -ENOMEM; alist->version = uniquifier; - call->reply[0] = alist; + call->ret_alist = alist; if (call->count == 0) goto extract_volendpoints; @@ -488,7 +481,7 @@ static int afs_deliver_yfsvl_get_endpoints(struct afs_call *call) if (ret < 0) return ret; - alist = call->reply[0]; + alist = call->ret_alist; bp = call->buffer; switch (call->count2) { case YFS_ENDPOINT_IPV4: @@ -609,7 +602,6 @@ static int afs_deliver_yfsvl_get_endpoints(struct afs_call *call) break; } - alist = call->reply[0]; _leave(" = 0 [done]"); return 0; } @@ -644,8 +636,8 @@ struct afs_addr_list *afs_yfsvl_get_endpoints(struct afs_vl_cursor *vc, return ERR_PTR(-ENOMEM); call->key = vc->key; - call->reply[0] = NULL; - call->ret_reply0 = true; + call->ret_alist = NULL; + call->max_lifespan = AFS_VL_MAX_LIFESPAN; /* Marshall the parameters */ bp = call->request; diff --git a/fs/afs/volume.c b/fs/afs/volume.c index f6eba2def0a1..1a414300b654 100644 --- a/fs/afs/volume.c +++ b/fs/afs/volume.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* AFS volume management * * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/kernel.h> @@ -47,6 +43,7 @@ static struct afs_volume *afs_alloc_volume(struct afs_fs_context *params, atomic_set(&volume->usage, 1); INIT_LIST_HEAD(&volume->proc_link); rwlock_init(&volume->servers_lock); + rwlock_init(&volume->cb_v_break_lock); memcpy(volume->name, vldb->name, vldb->name_len + 1); slist = afs_alloc_server_list(params->cell, params->key, vldb, type_mask); diff --git a/fs/afs/write.c b/fs/afs/write.c index 0122d7445fba..cb76566763db 100644 --- a/fs/afs/write.c +++ b/fs/afs/write.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* handling of writes to regular files and writing back to the server * * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #include <linux/backing-dev.h> @@ -48,8 +44,7 @@ static int afs_fill_page(struct afs_vnode *vnode, struct key *key, return 0; } - req = kzalloc(sizeof(struct afs_read) + sizeof(struct page *), - GFP_KERNEL); + req = kzalloc(struct_size(req, array, 1), GFP_KERNEL); if (!req) return -ENOMEM; @@ -314,6 +309,46 @@ static void afs_redirty_pages(struct writeback_control *wbc, } /* + * completion of write to server + */ +static void afs_pages_written_back(struct afs_vnode *vnode, + pgoff_t first, pgoff_t last) +{ + struct pagevec pv; + unsigned long priv; + unsigned count, loop; + + _enter("{%llx:%llu},{%lx-%lx}", + vnode->fid.vid, vnode->fid.vnode, first, last); + + pagevec_init(&pv); + + do { + _debug("done %lx-%lx", first, last); + + count = last - first + 1; + if (count > PAGEVEC_SIZE) + count = PAGEVEC_SIZE; + pv.nr = find_get_pages_contig(vnode->vfs_inode.i_mapping, + first, count, pv.pages); + ASSERTCMP(pv.nr, ==, count); + + for (loop = 0; loop < count; loop++) { + priv = page_private(pv.pages[loop]); + trace_afs_page_dirty(vnode, tracepoint_string("clear"), + pv.pages[loop]->index, priv); + set_page_private(pv.pages[loop], 0); + end_page_writeback(pv.pages[loop]); + } + first += count; + __pagevec_release(&pv); + } while (first <= last); + + afs_prune_wb_keys(vnode); + _leave(""); +} + +/* * write to a file */ static int afs_store_data(struct address_space *mapping, @@ -322,6 +357,7 @@ static int afs_store_data(struct address_space *mapping, { struct afs_vnode *vnode = AFS_FS_I(mapping->host); struct afs_fs_cursor fc; + struct afs_status_cb *scb; struct afs_wb_key *wbk = NULL; struct list_head *p; int ret = -ENOKEY, ret2; @@ -333,6 +369,10 @@ static int afs_store_data(struct address_space *mapping, vnode->fid.unique, first, last, offset, to); + scb = kzalloc(sizeof(struct afs_status_cb), GFP_NOFS); + if (!scb) + return -ENOMEM; + spin_lock(&vnode->wb_lock); p = vnode->wb_keys.next; @@ -351,6 +391,7 @@ try_next_key: spin_unlock(&vnode->wb_lock); afs_put_wb_key(wbk); + kfree(scb); _leave(" = %d [no keys]", ret); return ret; @@ -361,14 +402,19 @@ found_key: _debug("USE WB KEY %u", key_serial(wbk->key)); ret = -ERESTARTSYS; - if (afs_begin_vnode_operation(&fc, vnode, wbk->key)) { + if (afs_begin_vnode_operation(&fc, vnode, wbk->key, false)) { + afs_dataversion_t data_version = vnode->status.data_version + 1; + while (afs_select_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(vnode); - afs_fs_store_data(&fc, mapping, first, last, offset, to); + afs_fs_store_data(&fc, mapping, first, last, offset, to, scb); } - afs_check_for_remote_deletion(&fc, fc.vnode); - afs_vnode_commit_status(&fc, vnode, fc.cb_break); + afs_check_for_remote_deletion(&fc, vnode); + afs_vnode_commit_status(&fc, vnode, fc.cb_break, + &data_version, scb); + if (fc.ac.error == 0) + afs_pages_written_back(vnode, first, last); ret = afs_end_vnode_operation(&fc); } @@ -393,6 +439,7 @@ found_key: } afs_put_wb_key(wbk); + kfree(scb); _leave(" = %d", ret); return ret; } @@ -679,46 +726,6 @@ int afs_writepages(struct address_space *mapping, } /* - * completion of write to server - */ -void afs_pages_written_back(struct afs_vnode *vnode, struct afs_call *call) -{ - struct pagevec pv; - unsigned long priv; - unsigned count, loop; - pgoff_t first = call->first, last = call->last; - - _enter("{%llx:%llu},{%lx-%lx}", - vnode->fid.vid, vnode->fid.vnode, first, last); - - pagevec_init(&pv); - - do { - _debug("done %lx-%lx", first, last); - - count = last - first + 1; - if (count > PAGEVEC_SIZE) - count = PAGEVEC_SIZE; - pv.nr = find_get_pages_contig(vnode->vfs_inode.i_mapping, - first, count, pv.pages); - ASSERTCMP(pv.nr, ==, count); - - for (loop = 0; loop < count; loop++) { - priv = page_private(pv.pages[loop]); - trace_afs_page_dirty(vnode, tracepoint_string("clear"), - pv.pages[loop]->index, priv); - set_page_private(pv.pages[loop], 0); - end_page_writeback(pv.pages[loop]); - } - first += count; - __pagevec_release(&pv); - } while (first <= last); - - afs_prune_wb_keys(vnode); - _leave(""); -} - -/* * write to an AFS file */ ssize_t afs_file_write(struct kiocb *iocb, struct iov_iter *from) diff --git a/fs/afs/xattr.c b/fs/afs/xattr.c index c81f85003fc7..5552d034090a 100644 --- a/fs/afs/xattr.c +++ b/fs/afs/xattr.c @@ -1,13 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* Extended attribute handling for AFS. We use xattrs to get and set metadata * instead of providing pioctl(). * * Copyright (C) 2017 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. */ #include <linux/slab.h> @@ -47,40 +43,52 @@ static int afs_xattr_get_acl(const struct xattr_handler *handler, void *buffer, size_t size) { struct afs_fs_cursor fc; + struct afs_status_cb *scb; struct afs_vnode *vnode = AFS_FS_I(inode); struct afs_acl *acl = NULL; struct key *key; - int ret; + int ret = -ENOMEM; + + scb = kzalloc(sizeof(struct afs_status_cb), GFP_NOFS); + if (!scb) + goto error; key = afs_request_key(vnode->volume->cell); - if (IS_ERR(key)) - return PTR_ERR(key); + if (IS_ERR(key)) { + ret = PTR_ERR(key); + goto error_scb; + } ret = -ERESTARTSYS; - if (afs_begin_vnode_operation(&fc, vnode, key)) { + if (afs_begin_vnode_operation(&fc, vnode, key, true)) { + afs_dataversion_t data_version = vnode->status.data_version; + while (afs_select_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(vnode); - acl = afs_fs_fetch_acl(&fc); + acl = afs_fs_fetch_acl(&fc, scb); } afs_check_for_remote_deletion(&fc, fc.vnode); - afs_vnode_commit_status(&fc, vnode, fc.cb_break); + afs_vnode_commit_status(&fc, vnode, fc.cb_break, + &data_version, scb); ret = afs_end_vnode_operation(&fc); } if (ret == 0) { ret = acl->size; if (size > 0) { - ret = -ERANGE; - if (acl->size > size) - return -ERANGE; - memcpy(buffer, acl->data, acl->size); - ret = acl->size; + if (acl->size <= size) + memcpy(buffer, acl->data, acl->size); + else + ret = -ERANGE; } kfree(acl); } key_put(key); +error_scb: + kfree(scb); +error: return ret; } @@ -93,41 +101,53 @@ static int afs_xattr_set_acl(const struct xattr_handler *handler, const void *buffer, size_t size, int flags) { struct afs_fs_cursor fc; + struct afs_status_cb *scb; struct afs_vnode *vnode = AFS_FS_I(inode); struct afs_acl *acl = NULL; struct key *key; - int ret; + int ret = -ENOMEM; if (flags == XATTR_CREATE) return -EINVAL; - key = afs_request_key(vnode->volume->cell); - if (IS_ERR(key)) - return PTR_ERR(key); + scb = kzalloc(sizeof(struct afs_status_cb), GFP_NOFS); + if (!scb) + goto error; acl = kmalloc(sizeof(*acl) + size, GFP_KERNEL); - if (!acl) { - key_put(key); - return -ENOMEM; + if (!acl) + goto error_scb; + + key = afs_request_key(vnode->volume->cell); + if (IS_ERR(key)) { + ret = PTR_ERR(key); + goto error_acl; } acl->size = size; memcpy(acl->data, buffer, size); ret = -ERESTARTSYS; - if (afs_begin_vnode_operation(&fc, vnode, key)) { + if (afs_begin_vnode_operation(&fc, vnode, key, true)) { + afs_dataversion_t data_version = vnode->status.data_version; + while (afs_select_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(vnode); - afs_fs_store_acl(&fc, acl); + afs_fs_store_acl(&fc, acl, scb); } afs_check_for_remote_deletion(&fc, fc.vnode); - afs_vnode_commit_status(&fc, vnode, fc.cb_break); + afs_vnode_commit_status(&fc, vnode, fc.cb_break, + &data_version, scb); ret = afs_end_vnode_operation(&fc); } - kfree(acl); key_put(key); +error_acl: + kfree(acl); +error_scb: + kfree(scb); +error: return ret; } @@ -146,12 +166,12 @@ static int afs_xattr_get_yfs(const struct xattr_handler *handler, void *buffer, size_t size) { struct afs_fs_cursor fc; + struct afs_status_cb *scb; struct afs_vnode *vnode = AFS_FS_I(inode); struct yfs_acl *yacl = NULL; struct key *key; - unsigned int flags = 0; char buf[16], *data; - int which = 0, dsize, ret; + int which = 0, dsize, ret = -ENOMEM; if (strcmp(name, "acl") == 0) which = 0; @@ -164,65 +184,81 @@ static int afs_xattr_get_yfs(const struct xattr_handler *handler, else return -EOPNOTSUPP; + yacl = kzalloc(sizeof(struct yfs_acl), GFP_KERNEL); + if (!yacl) + goto error; + if (which == 0) - flags |= YFS_ACL_WANT_ACL; + yacl->flags |= YFS_ACL_WANT_ACL; else if (which == 3) - flags |= YFS_ACL_WANT_VOL_ACL; + yacl->flags |= YFS_ACL_WANT_VOL_ACL; + + scb = kzalloc(sizeof(struct afs_status_cb), GFP_NOFS); + if (!scb) + goto error_yacl; key = afs_request_key(vnode->volume->cell); - if (IS_ERR(key)) - return PTR_ERR(key); + if (IS_ERR(key)) { + ret = PTR_ERR(key); + goto error_scb; + } ret = -ERESTARTSYS; - if (afs_begin_vnode_operation(&fc, vnode, key)) { + if (afs_begin_vnode_operation(&fc, vnode, key, true)) { + afs_dataversion_t data_version = vnode->status.data_version; + while (afs_select_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(vnode); - yacl = yfs_fs_fetch_opaque_acl(&fc, flags); + yfs_fs_fetch_opaque_acl(&fc, yacl, scb); } afs_check_for_remote_deletion(&fc, fc.vnode); - afs_vnode_commit_status(&fc, vnode, fc.cb_break); + afs_vnode_commit_status(&fc, vnode, fc.cb_break, + &data_version, scb); ret = afs_end_vnode_operation(&fc); } - if (ret == 0) { - switch (which) { - case 0: - data = yacl->acl->data; - dsize = yacl->acl->size; - break; - case 1: - data = buf; - dsize = snprintf(buf, sizeof(buf), "%u", - yacl->inherit_flag); - break; - case 2: - data = buf; - dsize = snprintf(buf, sizeof(buf), "%u", - yacl->num_cleaned); - break; - case 3: - data = yacl->vol_acl->data; - dsize = yacl->vol_acl->size; - break; - default: - ret = -EOPNOTSUPP; - goto out; - } + if (ret < 0) + goto error_key; + + switch (which) { + case 0: + data = yacl->acl->data; + dsize = yacl->acl->size; + break; + case 1: + data = buf; + dsize = snprintf(buf, sizeof(buf), "%u", yacl->inherit_flag); + break; + case 2: + data = buf; + dsize = snprintf(buf, sizeof(buf), "%u", yacl->num_cleaned); + break; + case 3: + data = yacl->vol_acl->data; + dsize = yacl->vol_acl->size; + break; + default: + ret = -EOPNOTSUPP; + goto error_key; + } - ret = dsize; - if (size > 0) { - if (dsize > size) { - ret = -ERANGE; - goto out; - } - memcpy(buffer, data, dsize); + ret = dsize; + if (size > 0) { + if (dsize > size) { + ret = -ERANGE; + goto error_key; } + memcpy(buffer, data, dsize); } -out: - yfs_free_opaque_acl(yacl); +error_key: key_put(key); +error_scb: + kfree(scb); +error_yacl: + yfs_free_opaque_acl(yacl); +error: return ret; } @@ -235,42 +271,54 @@ static int afs_xattr_set_yfs(const struct xattr_handler *handler, const void *buffer, size_t size, int flags) { struct afs_fs_cursor fc; + struct afs_status_cb *scb; struct afs_vnode *vnode = AFS_FS_I(inode); struct afs_acl *acl = NULL; struct key *key; - int ret; + int ret = -ENOMEM; if (flags == XATTR_CREATE || strcmp(name, "acl") != 0) return -EINVAL; - key = afs_request_key(vnode->volume->cell); - if (IS_ERR(key)) - return PTR_ERR(key); + scb = kzalloc(sizeof(struct afs_status_cb), GFP_NOFS); + if (!scb) + goto error; acl = kmalloc(sizeof(*acl) + size, GFP_KERNEL); - if (!acl) { - key_put(key); - return -ENOMEM; - } + if (!acl) + goto error_scb; acl->size = size; memcpy(acl->data, buffer, size); + key = afs_request_key(vnode->volume->cell); + if (IS_ERR(key)) { + ret = PTR_ERR(key); + goto error_acl; + } + ret = -ERESTARTSYS; - if (afs_begin_vnode_operation(&fc, vnode, key)) { + if (afs_begin_vnode_operation(&fc, vnode, key, true)) { + afs_dataversion_t data_version = vnode->status.data_version; + while (afs_select_fileserver(&fc)) { fc.cb_break = afs_calc_vnode_cb_break(vnode); - yfs_fs_store_opaque_acl2(&fc, acl); + yfs_fs_store_opaque_acl2(&fc, acl, scb); } afs_check_for_remote_deletion(&fc, fc.vnode); - afs_vnode_commit_status(&fc, vnode, fc.cb_break); + afs_vnode_commit_status(&fc, vnode, fc.cb_break, + &data_version, scb); ret = afs_end_vnode_operation(&fc); } +error_acl: kfree(acl); key_put(key); +error_scb: + kfree(scb); +error: return ret; } diff --git a/fs/afs/xdr_fs.h b/fs/afs/xdr_fs.h index aa21f3068d52..94f1f398eefa 100644 --- a/fs/afs/xdr_fs.h +++ b/fs/afs/xdr_fs.h @@ -1,12 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* AFS fileserver XDR types * * Copyright (C) 2018 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. */ #ifndef XDR_FS_H diff --git a/fs/afs/yfsclient.c b/fs/afs/yfsclient.c index 6cf7d161baa1..18722aaeda33 100644 --- a/fs/afs/yfsclient.c +++ b/fs/afs/yfsclient.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* YFS File Server client stubs * * Copyright (C) 2018 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. */ #include <linux/init.h> @@ -183,24 +179,19 @@ static void xdr_dump_bad(const __be32 *bp) /* * Decode a YFSFetchStatus block */ -static int xdr_decode_YFSFetchStatus(struct afs_call *call, - const __be32 **_bp, - struct afs_file_status *status, - struct afs_vnode *vnode, - const afs_dataversion_t *expected_version, - struct afs_read *read_req) +static int xdr_decode_YFSFetchStatus(const __be32 **_bp, + struct afs_call *call, + struct afs_status_cb *scb) { const struct yfs_xdr_YFSFetchStatus *xdr = (const void *)*_bp; + struct afs_file_status *status = &scb->status; u32 type; - u8 flags = 0; status->abort_code = ntohl(xdr->abort_code); if (status->abort_code != 0) { - if (vnode && status->abort_code == VNOVNODE) { - set_bit(AFS_VNODE_DELETED, &vnode->flags); + if (status->abort_code == VNOVNODE) status->nlink = 0; - __afs_break_callback(vnode); - } + scb->have_error = true; return 0; } @@ -209,77 +200,28 @@ static int xdr_decode_YFSFetchStatus(struct afs_call *call, case AFS_FTYPE_FILE: case AFS_FTYPE_DIR: case AFS_FTYPE_SYMLINK: - if (type != status->type && - vnode && - !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { - pr_warning("Vnode %llx:%llx:%x changed type %u to %u\n", - vnode->fid.vid, - vnode->fid.vnode, - vnode->fid.unique, - status->type, type); - goto bad; - } status->type = type; break; default: goto bad; } -#define EXTRACT_M4(FIELD) \ - do { \ - u32 x = ntohl(xdr->FIELD); \ - if (status->FIELD != x) { \ - flags |= AFS_VNODE_META_CHANGED; \ - status->FIELD = x; \ - } \ - } while (0) - -#define EXTRACT_M8(FIELD) \ - do { \ - u64 x = xdr_to_u64(xdr->FIELD); \ - if (status->FIELD != x) { \ - flags |= AFS_VNODE_META_CHANGED; \ - status->FIELD = x; \ - } \ - } while (0) - -#define EXTRACT_D8(FIELD) \ - do { \ - u64 x = xdr_to_u64(xdr->FIELD); \ - if (status->FIELD != x) { \ - flags |= AFS_VNODE_DATA_CHANGED; \ - status->FIELD = x; \ - } \ - } while (0) - - EXTRACT_M4(nlink); - EXTRACT_D8(size); - EXTRACT_D8(data_version); - EXTRACT_M8(author); - EXTRACT_M8(owner); - EXTRACT_M8(group); - EXTRACT_M4(mode); - EXTRACT_M4(caller_access); /* call ticket dependent */ - EXTRACT_M4(anon_access); - - status->mtime_client = xdr_to_time(xdr->mtime_client); - status->mtime_server = xdr_to_time(xdr->mtime_server); - status->lock_count = ntohl(xdr->lock_count); - - if (read_req) { - read_req->data_version = status->data_version; - read_req->file_size = status->size; - } + status->nlink = ntohl(xdr->nlink); + status->author = xdr_to_u64(xdr->author); + status->owner = xdr_to_u64(xdr->owner); + status->caller_access = ntohl(xdr->caller_access); /* Ticket dependent */ + status->anon_access = ntohl(xdr->anon_access); + status->mode = ntohl(xdr->mode) & S_IALLUGO; + status->group = xdr_to_u64(xdr->group); + status->lock_count = ntohl(xdr->lock_count); + + status->mtime_client = xdr_to_time(xdr->mtime_client); + status->mtime_server = xdr_to_time(xdr->mtime_server); + status->size = xdr_to_u64(xdr->size); + status->data_version = xdr_to_u64(xdr->data_version); + scb->have_status = true; *_bp += xdr_size(xdr); - - if (vnode) { - if (test_bit(AFS_VNODE_UNSET, &vnode->flags)) - flags |= AFS_VNODE_NOT_YET_SET; - afs_update_inode_from_status(vnode, status, expected_version, - flags); - } - return 0; bad: @@ -288,73 +230,20 @@ bad: } /* - * Decode the file status. We need to lock the target vnode if we're going to - * update its status so that stat() sees the attributes update atomically. - */ -static int yfs_decode_status(struct afs_call *call, - const __be32 **_bp, - struct afs_file_status *status, - struct afs_vnode *vnode, - const afs_dataversion_t *expected_version, - struct afs_read *read_req) -{ - int ret; - - if (!vnode) - return xdr_decode_YFSFetchStatus(call, _bp, status, vnode, - expected_version, read_req); - - write_seqlock(&vnode->cb_lock); - ret = xdr_decode_YFSFetchStatus(call, _bp, status, vnode, - expected_version, read_req); - write_sequnlock(&vnode->cb_lock); - return ret; -} - -/* * Decode a YFSCallBack block */ -static void xdr_decode_YFSCallBack(struct afs_call *call, - struct afs_vnode *vnode, - const __be32 **_bp) -{ - struct yfs_xdr_YFSCallBack *xdr = (void *)*_bp; - struct afs_cb_interest *old, *cbi = call->cbi; - u64 cb_expiry; - - write_seqlock(&vnode->cb_lock); - - if (!afs_cb_is_broken(call->cb_break, vnode, cbi)) { - cb_expiry = xdr_to_u64(xdr->expiration_time); - do_div(cb_expiry, 10 * 1000 * 1000); - vnode->cb_version = ntohl(xdr->version); - vnode->cb_type = ntohl(xdr->type); - vnode->cb_expires_at = cb_expiry + ktime_get_real_seconds(); - old = vnode->cb_interest; - if (old != call->cbi) { - vnode->cb_interest = cbi; - cbi = old; - } - set_bit(AFS_VNODE_CB_PROMISED, &vnode->flags); - } - - write_sequnlock(&vnode->cb_lock); - call->cbi = cbi; - *_bp += xdr_size(xdr); -} - -static void xdr_decode_YFSCallBack_raw(const __be32 **_bp, - struct afs_callback *cb) +static void xdr_decode_YFSCallBack(const __be32 **_bp, + struct afs_call *call, + struct afs_status_cb *scb) { struct yfs_xdr_YFSCallBack *x = (void *)*_bp; - u64 cb_expiry; - - cb_expiry = xdr_to_u64(x->expiration_time); - do_div(cb_expiry, 10 * 1000 * 1000); - cb->version = ntohl(x->version); - cb->type = ntohl(x->type); - cb->expires_at = cb_expiry + ktime_get_real_seconds(); + struct afs_callback *cb = &scb->callback; + ktime_t cb_expiry; + cb_expiry = call->reply_time; + cb_expiry = ktime_add(cb_expiry, xdr_to_u64(x->expiration_time) * 100); + cb->expires_at = ktime_divns(cb_expiry, NSEC_PER_SEC); + scb->have_cb = true; *_bp += xdr_size(x); } @@ -442,11 +331,10 @@ static void xdr_decode_YFSFetchVolumeStatus(const __be32 **_bp, } /* - * deliver reply data to an FS.FetchStatus + * Deliver a reply that's a status, callback and volsync. */ -static int yfs_deliver_fs_fetch_status_vnode(struct afs_call *call) +static int yfs_deliver_fs_status_cb_and_volsync(struct afs_call *call) { - struct afs_vnode *vnode = call->reply[0]; const __be32 *bp; int ret; @@ -454,16 +342,36 @@ static int yfs_deliver_fs_fetch_status_vnode(struct afs_call *call) if (ret < 0) return ret; - _enter("{%llx:%llu}", vnode->fid.vid, vnode->fid.vnode); - /* unmarshall the reply once we've received all of it */ bp = call->buffer; - ret = yfs_decode_status(call, &bp, &vnode->status, vnode, - &call->expected_version, NULL); + ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); if (ret < 0) return ret; - xdr_decode_YFSCallBack(call, vnode, &bp); - xdr_decode_YFSVolSync(&bp, call->reply[1]); + xdr_decode_YFSCallBack(&bp, call, call->out_scb); + xdr_decode_YFSVolSync(&bp, call->out_volsync); + + _leave(" = 0 [done]"); + return 0; +} + +/* + * Deliver reply data to operations that just return a file status and a volume + * sync record. + */ +static int yfs_deliver_status_and_volsync(struct afs_call *call) +{ + const __be32 *bp; + int ret; + + ret = afs_transfer_reply(call); + if (ret < 0) + return ret; + + bp = call->buffer; + ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); + if (ret < 0) + return ret; + xdr_decode_YFSVolSync(&bp, call->out_volsync); _leave(" = 0 [done]"); return 0; @@ -475,15 +383,15 @@ static int yfs_deliver_fs_fetch_status_vnode(struct afs_call *call) static const struct afs_call_type yfs_RXYFSFetchStatus_vnode = { .name = "YFS.FetchStatus(vnode)", .op = yfs_FS_FetchStatus, - .deliver = yfs_deliver_fs_fetch_status_vnode, + .deliver = yfs_deliver_fs_status_cb_and_volsync, .destructor = afs_flat_call_destructor, }; /* * Fetch the status information for a file. */ -int yfs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_volsync *volsync, - bool new_inode) +int yfs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_status_cb *scb, + struct afs_volsync *volsync) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -505,9 +413,8 @@ int yfs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_volsync *volsy } call->key = fc->key; - call->reply[0] = vnode; - call->reply[1] = volsync; - call->expected_version = new_inode ? 1 : vnode->status.data_version; + call->out_scb = scb; + call->out_volsync = volsync; /* marshall the parameters */ bp = call->request; @@ -516,9 +423,9 @@ int yfs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_volsync *volsy bp = xdr_encode_YFSFid(bp, &vnode->fid); yfs_check_req(call, bp); - call->cb_break = fc->cb_break; afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &vnode->fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -528,8 +435,7 @@ int yfs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_volsync *volsy */ static int yfs_deliver_fs_fetch_data64(struct afs_call *call) { - struct afs_vnode *vnode = call->reply[0]; - struct afs_read *req = call->reply[2]; + struct afs_read *req = call->read_request; const __be32 *bp; unsigned int size; int ret; @@ -586,7 +492,7 @@ static int yfs_deliver_fs_fetch_data64(struct afs_call *call) if (req->offset == PAGE_SIZE) { req->offset = 0; if (req->page_done) - req->page_done(call, req); + req->page_done(req); req->index++; if (req->remain > 0) goto begin_page; @@ -623,12 +529,14 @@ static int yfs_deliver_fs_fetch_data64(struct afs_call *call) return ret; bp = call->buffer; - ret = yfs_decode_status(call, &bp, &vnode->status, vnode, - &vnode->status.data_version, req); + ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); if (ret < 0) return ret; - xdr_decode_YFSCallBack(call, vnode, &bp); - xdr_decode_YFSVolSync(&bp, call->reply[1]); + xdr_decode_YFSCallBack(&bp, call, call->out_scb); + xdr_decode_YFSVolSync(&bp, call->out_volsync); + + req->data_version = call->out_scb->status.data_version; + req->file_size = call->out_scb->status.size; call->unmarshall++; @@ -642,7 +550,7 @@ static int yfs_deliver_fs_fetch_data64(struct afs_call *call) zero_user_segment(req->pages[req->index], req->offset, PAGE_SIZE); if (req->page_done) - req->page_done(call, req); + req->page_done(req); req->offset = 0; } @@ -652,9 +560,7 @@ static int yfs_deliver_fs_fetch_data64(struct afs_call *call) static void yfs_fetch_data_destructor(struct afs_call *call) { - struct afs_read *req = call->reply[2]; - - afs_put_read(req); + afs_put_read(call->read_request); afs_flat_call_destructor(call); } @@ -671,7 +577,8 @@ static const struct afs_call_type yfs_RXYFSFetchData64 = { /* * Fetch data from a file. */ -int yfs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_read *req) +int yfs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_status_cb *scb, + struct afs_read *req) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -693,11 +600,9 @@ int yfs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_read *req) return -ENOMEM; call->key = fc->key; - call->reply[0] = vnode; - call->reply[1] = NULL; /* volsync */ - call->reply[2] = req; - call->expected_version = vnode->status.data_version; - call->want_reply_time = true; + call->out_scb = scb; + call->out_volsync = NULL; + call->read_request = req; /* marshall the parameters */ bp = call->request; @@ -709,9 +614,9 @@ int yfs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_read *req) yfs_check_req(call, bp); refcount_inc(&req->usage); - call->cb_break = fc->cb_break; afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &vnode->fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -721,7 +626,6 @@ int yfs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_read *req) */ static int yfs_deliver_fs_create_vnode(struct afs_call *call) { - struct afs_vnode *vnode = call->reply[0]; const __be32 *bp; int ret; @@ -733,16 +637,15 @@ static int yfs_deliver_fs_create_vnode(struct afs_call *call) /* unmarshall the reply once we've received all of it */ bp = call->buffer; - xdr_decode_YFSFid(&bp, call->reply[1]); - ret = yfs_decode_status(call, &bp, call->reply[2], NULL, NULL, NULL); + xdr_decode_YFSFid(&bp, call->out_fid); + ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); if (ret < 0) return ret; - ret = yfs_decode_status(call, &bp, &vnode->status, vnode, - &call->expected_version, NULL); + ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); if (ret < 0) return ret; - xdr_decode_YFSCallBack_raw(&bp, call->reply[3]); - xdr_decode_YFSVolSync(&bp, NULL); + xdr_decode_YFSCallBack(&bp, call, call->out_scb); + xdr_decode_YFSVolSync(&bp, call->out_volsync); _leave(" = 0 [done]"); return 0; @@ -764,14 +667,13 @@ static const struct afs_call_type afs_RXFSCreateFile = { int yfs_fs_create_file(struct afs_fs_cursor *fc, const char *name, umode_t mode, - u64 current_data_version, + struct afs_status_cb *dvnode_scb, struct afs_fid *newfid, - struct afs_file_status *newstatus, - struct afs_callback *newcb) + struct afs_status_cb *new_scb) { - struct afs_vnode *vnode = fc->vnode; + struct afs_vnode *dvnode = fc->vnode; struct afs_call *call; - struct afs_net *net = afs_v2net(vnode); + struct afs_net *net = afs_v2net(dvnode); size_t namesz, reqsz, rplsz; __be32 *bp; @@ -795,24 +697,23 @@ int yfs_fs_create_file(struct afs_fs_cursor *fc, return -ENOMEM; call->key = fc->key; - call->reply[0] = vnode; - call->reply[1] = newfid; - call->reply[2] = newstatus; - call->reply[3] = newcb; - call->expected_version = current_data_version + 1; + call->out_dir_scb = dvnode_scb; + call->out_fid = newfid; + call->out_scb = new_scb; /* marshall the parameters */ bp = call->request; bp = xdr_encode_u32(bp, YFSCREATEFILE); bp = xdr_encode_u32(bp, 0); /* RPC flags */ - bp = xdr_encode_YFSFid(bp, &vnode->fid); + bp = xdr_encode_YFSFid(bp, &dvnode->fid); bp = xdr_encode_string(bp, name, namesz); bp = xdr_encode_YFSStoreStatus_mode(bp, mode); bp = xdr_encode_u32(bp, yfs_LockNone); /* ViceLockType */ yfs_check_req(call, bp); afs_use_fs_server(call, fc->cbi); - trace_afs_make_fs_call1(call, &vnode->fid, name); + trace_afs_make_fs_call1(call, &dvnode->fid, name); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -830,14 +731,13 @@ static const struct afs_call_type yfs_RXFSMakeDir = { int yfs_fs_make_dir(struct afs_fs_cursor *fc, const char *name, umode_t mode, - u64 current_data_version, + struct afs_status_cb *dvnode_scb, struct afs_fid *newfid, - struct afs_file_status *newstatus, - struct afs_callback *newcb) + struct afs_status_cb *new_scb) { - struct afs_vnode *vnode = fc->vnode; + struct afs_vnode *dvnode = fc->vnode; struct afs_call *call; - struct afs_net *net = afs_v2net(vnode); + struct afs_net *net = afs_v2net(dvnode); size_t namesz, reqsz, rplsz; __be32 *bp; @@ -860,23 +760,22 @@ int yfs_fs_make_dir(struct afs_fs_cursor *fc, return -ENOMEM; call->key = fc->key; - call->reply[0] = vnode; - call->reply[1] = newfid; - call->reply[2] = newstatus; - call->reply[3] = newcb; - call->expected_version = current_data_version + 1; + call->out_dir_scb = dvnode_scb; + call->out_fid = newfid; + call->out_scb = new_scb; /* marshall the parameters */ bp = call->request; bp = xdr_encode_u32(bp, YFSMAKEDIR); bp = xdr_encode_u32(bp, 0); /* RPC flags */ - bp = xdr_encode_YFSFid(bp, &vnode->fid); + bp = xdr_encode_YFSFid(bp, &dvnode->fid); bp = xdr_encode_string(bp, name, namesz); bp = xdr_encode_YFSStoreStatus_mode(bp, mode); yfs_check_req(call, bp); afs_use_fs_server(call, fc->cbi); - trace_afs_make_fs_call1(call, &vnode->fid, name); + trace_afs_make_fs_call1(call, &dvnode->fid, name); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -886,8 +785,6 @@ int yfs_fs_make_dir(struct afs_fs_cursor *fc, */ static int yfs_deliver_fs_remove_file2(struct afs_call *call) { - struct afs_vnode *dvnode = call->reply[0]; - struct afs_vnode *vnode = call->reply[1]; struct afs_fid fid; const __be32 *bp; int ret; @@ -898,20 +795,18 @@ static int yfs_deliver_fs_remove_file2(struct afs_call *call) if (ret < 0) return ret; - /* unmarshall the reply once we've received all of it */ bp = call->buffer; - ret = yfs_decode_status(call, &bp, &dvnode->status, dvnode, - &call->expected_version, NULL); + ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); if (ret < 0) return ret; xdr_decode_YFSFid(&bp, &fid); - ret = yfs_decode_status(call, &bp, &vnode->status, vnode, NULL, NULL); + ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); if (ret < 0) return ret; /* Was deleted if vnode->status.abort_code == VNOVNODE. */ - xdr_decode_YFSVolSync(&bp, NULL); + xdr_decode_YFSVolSync(&bp, call->out_volsync); return 0; } @@ -929,7 +824,8 @@ static const struct afs_call_type yfs_RXYFSRemoveFile2 = { * Remove a file and retrieve new file status. */ int yfs_fs_remove_file2(struct afs_fs_cursor *fc, struct afs_vnode *vnode, - const char *name, u64 current_data_version) + const char *name, struct afs_status_cb *dvnode_scb, + struct afs_status_cb *vnode_scb) { struct afs_vnode *dvnode = fc->vnode; struct afs_call *call; @@ -954,9 +850,8 @@ int yfs_fs_remove_file2(struct afs_fs_cursor *fc, struct afs_vnode *vnode, return -ENOMEM; call->key = fc->key; - call->reply[0] = dvnode; - call->reply[1] = vnode; - call->expected_version = current_data_version + 1; + call->out_dir_scb = dvnode_scb; + call->out_scb = vnode_scb; /* marshall the parameters */ bp = call->request; @@ -968,6 +863,7 @@ int yfs_fs_remove_file2(struct afs_fs_cursor *fc, struct afs_vnode *vnode, afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call1(call, &dvnode->fid, name); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -977,7 +873,6 @@ int yfs_fs_remove_file2(struct afs_fs_cursor *fc, struct afs_vnode *vnode, */ static int yfs_deliver_fs_remove(struct afs_call *call) { - struct afs_vnode *dvnode = call->reply[0]; const __be32 *bp; int ret; @@ -987,14 +882,12 @@ static int yfs_deliver_fs_remove(struct afs_call *call) if (ret < 0) return ret; - /* unmarshall the reply once we've received all of it */ bp = call->buffer; - ret = yfs_decode_status(call, &bp, &dvnode->status, dvnode, - &call->expected_version, NULL); + ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); if (ret < 0) return ret; - xdr_decode_YFSVolSync(&bp, NULL); + xdr_decode_YFSVolSync(&bp, call->out_volsync); return 0; } @@ -1019,7 +912,8 @@ static const struct afs_call_type yfs_RXYFSRemoveDir = { * remove a file or directory */ int yfs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode, - const char *name, bool isdir, u64 current_data_version) + const char *name, bool isdir, + struct afs_status_cb *dvnode_scb) { struct afs_vnode *dvnode = fc->vnode; struct afs_call *call; @@ -1042,9 +936,7 @@ int yfs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode, return -ENOMEM; call->key = fc->key; - call->reply[0] = dvnode; - call->reply[1] = vnode; - call->expected_version = current_data_version + 1; + call->out_dir_scb = dvnode_scb; /* marshall the parameters */ bp = call->request; @@ -1056,6 +948,7 @@ int yfs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode, afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call1(call, &dvnode->fid, name); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -1065,7 +958,6 @@ int yfs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode, */ static int yfs_deliver_fs_link(struct afs_call *call) { - struct afs_vnode *dvnode = call->reply[0], *vnode = call->reply[1]; const __be32 *bp; int ret; @@ -1075,16 +967,14 @@ static int yfs_deliver_fs_link(struct afs_call *call) if (ret < 0) return ret; - /* unmarshall the reply once we've received all of it */ bp = call->buffer; - ret = yfs_decode_status(call, &bp, &vnode->status, vnode, NULL, NULL); + ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); if (ret < 0) return ret; - ret = yfs_decode_status(call, &bp, &dvnode->status, dvnode, - &call->expected_version, NULL); + ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); if (ret < 0) return ret; - xdr_decode_YFSVolSync(&bp, NULL); + xdr_decode_YFSVolSync(&bp, call->out_volsync); _leave(" = 0 [done]"); return 0; } @@ -1103,7 +993,9 @@ static const struct afs_call_type yfs_RXYFSLink = { * Make a hard link. */ int yfs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode, - const char *name, u64 current_data_version) + const char *name, + struct afs_status_cb *dvnode_scb, + struct afs_status_cb *vnode_scb) { struct afs_vnode *dvnode = fc->vnode; struct afs_call *call; @@ -1127,9 +1019,8 @@ int yfs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode, return -ENOMEM; call->key = fc->key; - call->reply[0] = dvnode; - call->reply[1] = vnode; - call->expected_version = current_data_version + 1; + call->out_dir_scb = dvnode_scb; + call->out_scb = vnode_scb; /* marshall the parameters */ bp = call->request; @@ -1142,6 +1033,7 @@ int yfs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode, afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call1(call, &vnode->fid, name); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -1151,7 +1043,6 @@ int yfs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode, */ static int yfs_deliver_fs_symlink(struct afs_call *call) { - struct afs_vnode *vnode = call->reply[0]; const __be32 *bp; int ret; @@ -1163,15 +1054,14 @@ static int yfs_deliver_fs_symlink(struct afs_call *call) /* unmarshall the reply once we've received all of it */ bp = call->buffer; - xdr_decode_YFSFid(&bp, call->reply[1]); - ret = yfs_decode_status(call, &bp, call->reply[2], NULL, NULL, NULL); + xdr_decode_YFSFid(&bp, call->out_fid); + ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); if (ret < 0) return ret; - ret = yfs_decode_status(call, &bp, &vnode->status, vnode, - &call->expected_version, NULL); + ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); if (ret < 0) return ret; - xdr_decode_YFSVolSync(&bp, NULL); + xdr_decode_YFSVolSync(&bp, call->out_volsync); _leave(" = 0 [done]"); return 0; @@ -1193,9 +1083,9 @@ static const struct afs_call_type yfs_RXYFSSymlink = { int yfs_fs_symlink(struct afs_fs_cursor *fc, const char *name, const char *contents, - u64 current_data_version, + struct afs_status_cb *dvnode_scb, struct afs_fid *newfid, - struct afs_file_status *newstatus) + struct afs_status_cb *vnode_scb) { struct afs_vnode *dvnode = fc->vnode; struct afs_call *call; @@ -1222,10 +1112,9 @@ int yfs_fs_symlink(struct afs_fs_cursor *fc, return -ENOMEM; call->key = fc->key; - call->reply[0] = dvnode; - call->reply[1] = newfid; - call->reply[2] = newstatus; - call->expected_version = current_data_version + 1; + call->out_dir_scb = dvnode_scb; + call->out_fid = newfid; + call->out_scb = vnode_scb; /* marshall the parameters */ bp = call->request; @@ -1239,6 +1128,7 @@ int yfs_fs_symlink(struct afs_fs_cursor *fc, afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call1(call, &dvnode->fid, name); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -1248,8 +1138,6 @@ int yfs_fs_symlink(struct afs_fs_cursor *fc, */ static int yfs_deliver_fs_rename(struct afs_call *call) { - struct afs_vnode *orig_dvnode = call->reply[0]; - struct afs_vnode *new_dvnode = call->reply[1]; const __be32 *bp; int ret; @@ -1259,20 +1147,17 @@ static int yfs_deliver_fs_rename(struct afs_call *call) if (ret < 0) return ret; - /* unmarshall the reply once we've received all of it */ bp = call->buffer; - ret = yfs_decode_status(call, &bp, &orig_dvnode->status, orig_dvnode, - &call->expected_version, NULL); + ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb); if (ret < 0) return ret; - if (new_dvnode != orig_dvnode) { - ret = yfs_decode_status(call, &bp, &new_dvnode->status, new_dvnode, - &call->expected_version_2, NULL); + if (call->out_dir_scb != call->out_scb) { + ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); if (ret < 0) return ret; } - xdr_decode_YFSVolSync(&bp, NULL); + xdr_decode_YFSVolSync(&bp, call->out_volsync); _leave(" = 0 [done]"); return 0; } @@ -1294,8 +1179,8 @@ int yfs_fs_rename(struct afs_fs_cursor *fc, const char *orig_name, struct afs_vnode *new_dvnode, const char *new_name, - u64 current_orig_data_version, - u64 current_new_data_version) + struct afs_status_cb *orig_dvnode_scb, + struct afs_status_cb *new_dvnode_scb) { struct afs_vnode *orig_dvnode = fc->vnode; struct afs_call *call; @@ -1321,10 +1206,8 @@ int yfs_fs_rename(struct afs_fs_cursor *fc, return -ENOMEM; call->key = fc->key; - call->reply[0] = orig_dvnode; - call->reply[1] = new_dvnode; - call->expected_version = current_orig_data_version + 1; - call->expected_version_2 = current_new_data_version + 1; + call->out_dir_scb = orig_dvnode_scb; + call->out_scb = new_dvnode_scb; /* marshall the parameters */ bp = call->request; @@ -1338,46 +1221,18 @@ int yfs_fs_rename(struct afs_fs_cursor *fc, afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call2(call, &orig_dvnode->fid, orig_name, new_name); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } /* - * Deliver reply data to a YFS.StoreData64 operation. - */ -static int yfs_deliver_fs_store_data(struct afs_call *call) -{ - struct afs_vnode *vnode = call->reply[0]; - const __be32 *bp; - int ret; - - _enter(""); - - ret = afs_transfer_reply(call); - if (ret < 0) - return ret; - - /* unmarshall the reply once we've received all of it */ - bp = call->buffer; - ret = yfs_decode_status(call, &bp, &vnode->status, vnode, - &call->expected_version, NULL); - if (ret < 0) - return ret; - xdr_decode_YFSVolSync(&bp, NULL); - - afs_pages_written_back(vnode, call); - - _leave(" = 0 [done]"); - return 0; -} - -/* * YFS.StoreData64 operation type. */ static const struct afs_call_type yfs_RXYFSStoreData64 = { .name = "YFS.StoreData64", .op = yfs_FS_StoreData64, - .deliver = yfs_deliver_fs_store_data, + .deliver = yfs_deliver_status_and_volsync, .destructor = afs_flat_call_destructor, }; @@ -1386,7 +1241,8 @@ static const struct afs_call_type yfs_RXYFSStoreData64 = { */ int yfs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping, pgoff_t first, pgoff_t last, - unsigned offset, unsigned to) + unsigned offset, unsigned to, + struct afs_status_cb *scb) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -1424,13 +1280,12 @@ int yfs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping, call->key = fc->key; call->mapping = mapping; - call->reply[0] = vnode; call->first = first; call->last = last; call->first_offset = offset; call->last_to = to; call->send_pages = true; - call->expected_version = vnode->status.data_version + 1; + call->out_scb = scb; /* marshall the parameters */ bp = call->request; @@ -1445,51 +1300,25 @@ int yfs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping, afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &vnode->fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } /* - * deliver reply data to an FS.StoreStatus - */ -static int yfs_deliver_fs_store_status(struct afs_call *call) -{ - struct afs_vnode *vnode = call->reply[0]; - const __be32 *bp; - int ret; - - _enter(""); - - ret = afs_transfer_reply(call); - if (ret < 0) - return ret; - - /* unmarshall the reply once we've received all of it */ - bp = call->buffer; - ret = yfs_decode_status(call, &bp, &vnode->status, vnode, - &call->expected_version, NULL); - if (ret < 0) - return ret; - xdr_decode_YFSVolSync(&bp, NULL); - - _leave(" = 0 [done]"); - return 0; -} - -/* * YFS.StoreStatus operation type */ static const struct afs_call_type yfs_RXYFSStoreStatus = { .name = "YFS.StoreStatus", .op = yfs_FS_StoreStatus, - .deliver = yfs_deliver_fs_store_status, + .deliver = yfs_deliver_status_and_volsync, .destructor = afs_flat_call_destructor, }; static const struct afs_call_type yfs_RXYFSStoreData64_as_Status = { .name = "YFS.StoreData64", .op = yfs_FS_StoreData64, - .deliver = yfs_deliver_fs_store_status, + .deliver = yfs_deliver_status_and_volsync, .destructor = afs_flat_call_destructor, }; @@ -1497,7 +1326,8 @@ static const struct afs_call_type yfs_RXYFSStoreData64_as_Status = { * Set the attributes on a file, using YFS.StoreData64 rather than * YFS.StoreStatus so as to alter the file size also. */ -static int yfs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr) +static int yfs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr, + struct afs_status_cb *scb) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -1518,8 +1348,7 @@ static int yfs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr) return -ENOMEM; call->key = fc->key; - call->reply[0] = vnode; - call->expected_version = vnode->status.data_version + 1; + call->out_scb = scb; /* marshall the parameters */ bp = call->request; @@ -1534,6 +1363,7 @@ static int yfs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr) afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &vnode->fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -1542,7 +1372,8 @@ static int yfs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr) * Set the attributes on a file, using YFS.StoreData64 if there's a change in * file size, and YFS.StoreStatus otherwise. */ -int yfs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr) +int yfs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr, + struct afs_status_cb *scb) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -1550,7 +1381,7 @@ int yfs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr) __be32 *bp; if (attr->ia_valid & ATTR_SIZE) - return yfs_fs_setattr_size(fc, attr); + return yfs_fs_setattr_size(fc, attr, scb); _enter(",%x,{%llx:%llu},,", key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); @@ -1565,8 +1396,7 @@ int yfs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr) return -ENOMEM; call->key = fc->key; - call->reply[0] = vnode; - call->expected_version = vnode->status.data_version; + call->out_scb = scb; /* marshall the parameters */ bp = call->request; @@ -1578,6 +1408,7 @@ int yfs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr) afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &vnode->fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -1607,7 +1438,7 @@ static int yfs_deliver_fs_get_volume_status(struct afs_call *call) return ret; bp = call->buffer; - xdr_decode_YFSFetchVolumeStatus(&bp, call->reply[1]); + xdr_decode_YFSFetchVolumeStatus(&bp, call->out_volstatus); call->unmarshall++; afs_extract_to_tmp(call); @@ -1623,7 +1454,7 @@ static int yfs_deliver_fs_get_volume_status(struct afs_call *call) return afs_protocol_error(call, -EBADMSG, afs_eproto_volname_len); size = (call->count + 3) & ~3; /* It's padded */ - afs_extract_begin(call, call->reply[2], size); + afs_extract_to_buf(call, size); call->unmarshall++; /* Fall through - and extract the volume name */ @@ -1633,7 +1464,7 @@ static int yfs_deliver_fs_get_volume_status(struct afs_call *call) if (ret < 0) return ret; - p = call->reply[2]; + p = call->buffer; p[call->count] = 0; _debug("volname '%s'", p); afs_extract_to_tmp(call); @@ -1651,7 +1482,7 @@ static int yfs_deliver_fs_get_volume_status(struct afs_call *call) return afs_protocol_error(call, -EBADMSG, afs_eproto_offline_msg_len); size = (call->count + 3) & ~3; /* It's padded */ - afs_extract_begin(call, call->reply[2], size); + afs_extract_to_buf(call, size); call->unmarshall++; /* Fall through - and extract the offline message */ @@ -1661,7 +1492,7 @@ static int yfs_deliver_fs_get_volume_status(struct afs_call *call) if (ret < 0) return ret; - p = call->reply[2]; + p = call->buffer; p[call->count] = 0; _debug("offline '%s'", p); @@ -1680,7 +1511,7 @@ static int yfs_deliver_fs_get_volume_status(struct afs_call *call) return afs_protocol_error(call, -EBADMSG, afs_eproto_motd_len); size = (call->count + 3) & ~3; /* It's padded */ - afs_extract_begin(call, call->reply[2], size); + afs_extract_to_buf(call, size); call->unmarshall++; /* Fall through - and extract the message of the day */ @@ -1690,7 +1521,7 @@ static int yfs_deliver_fs_get_volume_status(struct afs_call *call) if (ret < 0) return ret; - p = call->reply[2]; + p = call->buffer; p[call->count] = 0; _debug("motd '%s'", p); @@ -1706,23 +1537,13 @@ static int yfs_deliver_fs_get_volume_status(struct afs_call *call) } /* - * Destroy a YFS.GetVolumeStatus call. - */ -static void yfs_get_volume_status_call_destructor(struct afs_call *call) -{ - kfree(call->reply[2]); - call->reply[2] = NULL; - afs_flat_call_destructor(call); -} - -/* * YFS.GetVolumeStatus operation type */ static const struct afs_call_type yfs_RXYFSGetVolumeStatus = { .name = "YFS.GetVolumeStatus", .op = yfs_FS_GetVolumeStatus, .deliver = yfs_deliver_fs_get_volume_status, - .destructor = yfs_get_volume_status_call_destructor, + .destructor = afs_flat_call_destructor, }; /* @@ -1735,28 +1556,21 @@ int yfs_fs_get_volume_status(struct afs_fs_cursor *fc, struct afs_call *call; struct afs_net *net = afs_v2net(vnode); __be32 *bp; - void *tmpbuf; _enter(""); - tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL); - if (!tmpbuf) - return -ENOMEM; - call = afs_alloc_flat_call(net, &yfs_RXYFSGetVolumeStatus, sizeof(__be32) * 2 + sizeof(struct yfs_xdr_u64), - sizeof(struct yfs_xdr_YFSFetchVolumeStatus) + - sizeof(__be32)); - if (!call) { - kfree(tmpbuf); + max_t(size_t, + sizeof(struct yfs_xdr_YFSFetchVolumeStatus) + + sizeof(__be32), + AFSOPAQUEMAX + 1)); + if (!call) return -ENOMEM; - } call->key = fc->key; - call->reply[0] = vnode; - call->reply[1] = vs; - call->reply[2] = tmpbuf; + call->out_volstatus = vs; /* marshall the parameters */ bp = call->request; @@ -1767,39 +1581,12 @@ int yfs_fs_get_volume_status(struct afs_fs_cursor *fc, afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &vnode->fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } /* - * Deliver reply data to operations that just return a file status and a volume - * sync record. - */ -static int yfs_deliver_status_and_volsync(struct afs_call *call) -{ - struct afs_vnode *vnode = call->reply[0]; - const __be32 *bp; - int ret; - - _enter("{%u}", call->unmarshall); - - ret = afs_transfer_reply(call); - if (ret < 0) - return ret; - - /* unmarshall the reply once we've received all of it */ - bp = call->buffer; - ret = yfs_decode_status(call, &bp, &vnode->status, vnode, - &call->expected_version, NULL); - if (ret < 0) - return ret; - xdr_decode_YFSVolSync(&bp, NULL); - - _leave(" = 0 [done]"); - return 0; -} - -/* * YFS.SetLock operation type */ static const struct afs_call_type yfs_RXYFSSetLock = { @@ -1834,7 +1621,8 @@ static const struct afs_call_type yfs_RXYFSReleaseLock = { /* * Set a lock on a file */ -int yfs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type) +int yfs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type, + struct afs_status_cb *scb) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -1853,8 +1641,8 @@ int yfs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type) return -ENOMEM; call->key = fc->key; - call->reply[0] = vnode; - call->want_reply_time = true; + call->lvnode = vnode; + call->out_scb = scb; /* marshall the parameters */ bp = call->request; @@ -1866,6 +1654,7 @@ int yfs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type) afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_calli(call, &vnode->fid, type); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -1873,7 +1662,7 @@ int yfs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type) /* * extend a lock on a file */ -int yfs_fs_extend_lock(struct afs_fs_cursor *fc) +int yfs_fs_extend_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -1891,8 +1680,8 @@ int yfs_fs_extend_lock(struct afs_fs_cursor *fc) return -ENOMEM; call->key = fc->key; - call->reply[0] = vnode; - call->want_reply_time = true; + call->lvnode = vnode; + call->out_scb = scb; /* marshall the parameters */ bp = call->request; @@ -1903,6 +1692,7 @@ int yfs_fs_extend_lock(struct afs_fs_cursor *fc) afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &vnode->fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -1910,7 +1700,7 @@ int yfs_fs_extend_lock(struct afs_fs_cursor *fc) /* * release a lock on a file */ -int yfs_fs_release_lock(struct afs_fs_cursor *fc) +int yfs_fs_release_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -1928,7 +1718,8 @@ int yfs_fs_release_lock(struct afs_fs_cursor *fc) return -ENOMEM; call->key = fc->key; - call->reply[0] = vnode; + call->lvnode = vnode; + call->out_scb = scb; /* marshall the parameters */ bp = call->request; @@ -1939,48 +1730,18 @@ int yfs_fs_release_lock(struct afs_fs_cursor *fc) afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &vnode->fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } /* - * Deliver reply data to an FS.FetchStatus with no vnode. - */ -static int yfs_deliver_fs_fetch_status(struct afs_call *call) -{ - struct afs_file_status *status = call->reply[1]; - struct afs_callback *callback = call->reply[2]; - struct afs_volsync *volsync = call->reply[3]; - struct afs_vnode *vnode = call->reply[0]; - const __be32 *bp; - int ret; - - ret = afs_transfer_reply(call); - if (ret < 0) - return ret; - - _enter("{%llx:%llu}", vnode->fid.vid, vnode->fid.vnode); - - /* unmarshall the reply once we've received all of it */ - bp = call->buffer; - ret = yfs_decode_status(call, &bp, status, vnode, - &call->expected_version, NULL); - if (ret < 0) - return ret; - xdr_decode_YFSCallBack_raw(&bp, callback); - xdr_decode_YFSVolSync(&bp, volsync); - - _leave(" = 0 [done]"); - return 0; -} - -/* * YFS.FetchStatus operation type */ static const struct afs_call_type yfs_RXYFSFetchStatus = { .name = "YFS.FetchStatus", .op = yfs_FS_FetchStatus, - .deliver = yfs_deliver_fs_fetch_status, + .deliver = yfs_deliver_fs_status_cb_and_volsync, .destructor = afs_flat_call_destructor, }; @@ -1990,8 +1751,7 @@ static const struct afs_call_type yfs_RXYFSFetchStatus = { int yfs_fs_fetch_status(struct afs_fs_cursor *fc, struct afs_net *net, struct afs_fid *fid, - struct afs_file_status *status, - struct afs_callback *callback, + struct afs_status_cb *scb, struct afs_volsync *volsync) { struct afs_call *call; @@ -2012,11 +1772,8 @@ int yfs_fs_fetch_status(struct afs_fs_cursor *fc, } call->key = fc->key; - call->reply[0] = NULL; /* vnode for fid[0] */ - call->reply[1] = status; - call->reply[2] = callback; - call->reply[3] = volsync; - call->expected_version = 1; /* vnode->status.data_version */ + call->out_scb = scb; + call->out_volsync = volsync; /* marshall the parameters */ bp = call->request; @@ -2025,9 +1782,9 @@ int yfs_fs_fetch_status(struct afs_fs_cursor *fc, bp = xdr_encode_YFSFid(bp, fid); yfs_check_req(call, bp); - call->cb_break = fc->cb_break; afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, fid); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -2037,9 +1794,7 @@ int yfs_fs_fetch_status(struct afs_fs_cursor *fc, */ static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call) { - struct afs_file_status *statuses; - struct afs_callback *callbacks; - struct afs_vnode *vnode = call->reply[0]; + struct afs_status_cb *scb; const __be32 *bp; u32 tmp; int ret; @@ -2078,10 +1833,8 @@ static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call) return ret; bp = call->buffer; - statuses = call->reply[1]; - ret = yfs_decode_status(call, &bp, &statuses[call->count], - call->count == 0 ? vnode : NULL, - NULL, NULL); + scb = &call->out_scb[call->count]; + ret = xdr_decode_YFSFetchStatus(&bp, call, scb); if (ret < 0) return ret; @@ -2120,13 +1873,8 @@ static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call) _debug("unmarshall CB array"); bp = call->buffer; - callbacks = call->reply[2]; - xdr_decode_YFSCallBack_raw(&bp, &callbacks[call->count]); - statuses = call->reply[1]; - if (call->count == 0 && vnode && statuses[0].abort_code == 0) { - bp = call->buffer; - xdr_decode_YFSCallBack(call, vnode, &bp); - } + scb = &call->out_scb[call->count]; + xdr_decode_YFSCallBack(&bp, call, scb); call->count++; if (call->count < call->count2) goto more_cbs; @@ -2141,7 +1889,7 @@ static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call) return ret; bp = call->buffer; - xdr_decode_YFSVolSync(&bp, call->reply[3]); + xdr_decode_YFSVolSync(&bp, call->out_volsync); call->unmarshall++; @@ -2170,8 +1918,7 @@ static const struct afs_call_type yfs_RXYFSInlineBulkStatus = { int yfs_fs_inline_bulk_status(struct afs_fs_cursor *fc, struct afs_net *net, struct afs_fid *fids, - struct afs_file_status *statuses, - struct afs_callback *callbacks, + struct afs_status_cb *statuses, unsigned int nr_fids, struct afs_volsync *volsync) { @@ -2194,10 +1941,8 @@ int yfs_fs_inline_bulk_status(struct afs_fs_cursor *fc, } call->key = fc->key; - call->reply[0] = NULL; /* vnode for fid[0] */ - call->reply[1] = statuses; - call->reply[2] = callbacks; - call->reply[3] = volsync; + call->out_scb = statuses; + call->out_volsync = volsync; call->count2 = nr_fids; /* marshall the parameters */ @@ -2209,9 +1954,9 @@ int yfs_fs_inline_bulk_status(struct afs_fs_cursor *fc, bp = xdr_encode_YFSFid(bp, &fids[i]); yfs_check_req(call, bp); - call->cb_break = fc->cb_break; afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &fids[0]); + afs_set_fc_call(call, fc); afs_make_call(&fc->ac, call, GFP_NOFS); return afs_wait_for_call_to_complete(call, &fc->ac); } @@ -2221,9 +1966,7 @@ int yfs_fs_inline_bulk_status(struct afs_fs_cursor *fc, */ static int yfs_deliver_fs_fetch_opaque_acl(struct afs_call *call) { - struct afs_volsync *volsync = call->reply[2]; - struct afs_vnode *vnode = call->reply[1]; - struct yfs_acl *yacl = call->reply[0]; + struct yfs_acl *yacl = call->out_yacl; struct afs_acl *acl; const __be32 *bp; unsigned int size; @@ -2308,11 +2051,10 @@ static int yfs_deliver_fs_fetch_opaque_acl(struct afs_call *call) bp = call->buffer; yacl->inherit_flag = ntohl(*bp++); yacl->num_cleaned = ntohl(*bp++); - ret = yfs_decode_status(call, &bp, &vnode->status, vnode, - &call->expected_version, NULL); + ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb); if (ret < 0) return ret; - xdr_decode_YFSVolSync(&bp, volsync); + xdr_decode_YFSVolSync(&bp, call->out_volsync); call->unmarshall++; @@ -2333,12 +2075,6 @@ void yfs_free_opaque_acl(struct yfs_acl *yacl) } } -static void yfs_destroy_fs_fetch_opaque_acl(struct afs_call *call) -{ - yfs_free_opaque_acl(call->reply[0]); - afs_flat_call_destructor(call); -} - /* * YFS.FetchOpaqueACL operation type */ @@ -2346,18 +2082,18 @@ static const struct afs_call_type yfs_RXYFSFetchOpaqueACL = { .name = "YFS.FetchOpaqueACL", .op = yfs_FS_FetchOpaqueACL, .deliver = yfs_deliver_fs_fetch_opaque_acl, - .destructor = yfs_destroy_fs_fetch_opaque_acl, + .destructor = afs_flat_call_destructor, }; /* * Fetch the YFS advanced ACLs for a file. */ struct yfs_acl *yfs_fs_fetch_opaque_acl(struct afs_fs_cursor *fc, - unsigned int flags) + struct yfs_acl *yacl, + struct afs_status_cb *scb) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; - struct yfs_acl *yacl; struct afs_net *net = afs_v2net(vnode); __be32 *bp; @@ -2370,19 +2106,15 @@ struct yfs_acl *yfs_fs_fetch_opaque_acl(struct afs_fs_cursor *fc, sizeof(__be32) * 2 + sizeof(struct yfs_xdr_YFSFetchStatus) + sizeof(struct yfs_xdr_YFSVolSync)); - if (!call) - goto nomem; - - yacl = kzalloc(sizeof(struct yfs_acl), GFP_KERNEL); - if (!yacl) - goto nomem_call; + if (!call) { + fc->ac.error = -ENOMEM; + return ERR_PTR(-ENOMEM); + } - yacl->flags = flags; call->key = fc->key; - call->reply[0] = yacl; - call->reply[1] = vnode; - call->reply[2] = NULL; /* volsync */ - call->ret_reply0 = true; + call->out_yacl = yacl; + call->out_scb = scb; + call->out_volsync = NULL; /* marshall the parameters */ bp = call->request; @@ -2391,17 +2123,10 @@ struct yfs_acl *yfs_fs_fetch_opaque_acl(struct afs_fs_cursor *fc, bp = xdr_encode_YFSFid(bp, &vnode->fid); yfs_check_req(call, bp); - call->cb_break = fc->cb_break; afs_use_fs_server(call, fc->cbi); trace_afs_make_fs_call(call, &vnode->fid); afs_make_call(&fc->ac, call, GFP_KERNEL); return (struct yfs_acl *)afs_wait_for_call_to_complete(call, &fc->ac); - -nomem_call: - afs_put_call(call); -nomem: - fc->ac.error = -ENOMEM; - return ERR_PTR(-ENOMEM); } /* @@ -2417,7 +2142,8 @@ static const struct afs_call_type yfs_RXYFSStoreOpaqueACL2 = { /* * Fetch the YFS ACL for a file. */ -int yfs_fs_store_opaque_acl2(struct afs_fs_cursor *fc, const struct afs_acl *acl) +int yfs_fs_store_opaque_acl2(struct afs_fs_cursor *fc, const struct afs_acl *acl, + struct afs_status_cb *scb) { struct afs_vnode *vnode = fc->vnode; struct afs_call *call; @@ -2441,8 +2167,8 @@ int yfs_fs_store_opaque_acl2(struct afs_fs_cursor *fc, const struct afs_acl *acl } call->key = fc->key; - call->reply[0] = vnode; - call->reply[2] = NULL; /* volsync */ + call->out_scb = scb; + call->out_volsync = NULL; /* marshall the parameters */ bp = call->request; |