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2015-04-12coredump: accept any write methodAl Viro1-1/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12export __vfs_read()Al Viro1-8/+5
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12autofs: switch to __vfs_write()Al Viro2-2/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12new helper: __vfs_write()Al Viro1-12/+16
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12Merge branch '9p-iov_iter' into for-nextAl Viro5-366/+139
2015-04-12switch hugetlbfs to ->read_iter()Al Viro1-58/+34
... and fix the case when the area we are asked to read crosses a hugepage boundary Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12coda: switch to ->read_iter/->write_iterAl Viro1-25/+15
... and request the same from the local cache - all filesystems with anything usable for that support those already. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12ncpfs: switch to ->read_iter/->write_iterAl Viro3-63/+37
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-129p: we are leaking glock.client_id in v9fs_file_getlock()Al Viro1-0/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-129p: switch to ->read_iter/->write_iterAl Viro1-44/+39
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-129p: get rid of v9fs_direct_file_read()Al Viro2-51/+12
do it in ->direct_IO()... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-129p: switch p9_client_read() to passing struct iov_iter *Al Viro5-118/+46
... and make it loop Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-129p: get rid of v9fs_direct_file_write()Al Viro2-82/+17
just handle it in ->direct_IO() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-129p: fold v9fs_file_write_internal() into the callerAl Viro2-49/+30
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-129p: switch ->writepage() to direct use of p9_client_write()Al Viro1-22/+13
Don't mess with kmap() - just use ITER_BVEC. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-129p: switch p9_client_write() to passing it struct iov_iter *Al Viro2-38/+18
... and make it loop until it's done Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12aio_run_iocb(): kill dead checkAl Viro1-7/+0
We check if ->ki_pos is positive. However, by that point we have already done rw_verify_area(), which would have rejected such unless the file had been one of /dev/mem, /dev/kmem and /proc/kcore. All of which do not have vectored rw methods, so we would've bailed out even earlier. This check had been introduced before rw_verify_area() had been added there - in fact, it was a subset of checks done on sync paths by rw_verify_area() (back then the /dev/mem exception didn't exist at all). The rest of checks (mandatory locking, etc.) hadn't been added until later. Unfortunately, by the time the call of rw_verify_area() got added, the /dev/mem exception had already appeared, so it wasn't obvious that the older explicit check downstream had become dead code. It *is* a dead code, though, since the few files for which the exception applies do not have ->aio_{read,write}() or ->{read,write}_iter() and for them we won't reach that check anyway. What's more, even if we ever introduce vectored methods for /dev/mem and friends, they'll have to cope with negative positions anyway, since readv(2) and writev(2) are using the same checks as read(2) and write(2) - i.e. rw_verify_area(). Let's bury it. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12ioctx_alloc(): remove pointless checkAl Viro1-2/+1
Way, way back kiocb used to be picked from arrays, so ioctx_alloc() checked for multiplication overflow when calculating the size of such array. By the time fs/aio.c went into the tree (in 2002) they were already allocated one-by-one by kmem_cache_alloc(), so that check had already become pointless. Let's bury it... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12expand __fuse_direct_write() in both callersAl Viro1-25/+17
it's actually shorter that way *and* later we'll want iocb in scope of generic_write_check() caller. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12fuse: switch fuse_direct_io_file_operations to ->{read,write}_iter()Al Viro1-17/+12
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12cuse: switch to iov_iterAl Viro1-17/+10
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12Merge branch 'for-davem' into for-nextAl Viro21-62/+194
2015-04-12switch {compat_,}do_readv_writev() to {compat_,}import_iovec()Al Viro1-16/+16
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12aio_setup_vectored_rw(): switch to {compat_,}import_iovec()Al Viro1-19/+9
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12vmsplice_to_user(): switch to import_iovec()Al Viro1-16/+11
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12kill aio_setup_single_vector()Al Viro1-17/+1
identical to import_single_range() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12aio: simplify arguments of aio_setup_..._rw()Al Viro1-28/+17
We don't need req in either of those. We don't need nr_segs in caller. We don't really need len in caller either - iov_iter_count(&iter) will do. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12aio: lift iov_iter_init() into aio_setup_..._rw()Al Viro1-6/+11
the only non-trivial detail is that we do it before rw_verify_area(), so we'd better cap the length ourselves in aio_setup_single_rw() case (for vectored case rw_copy_check_uvector() will do that for us). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12lift iov_iter into {compat_,}do_readv_writev()Al Viro1-31/+23
get it closer to matching {compat_,}rw_copy_check_uvector(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12Merge branch 'iocb' into for-nextAl Viro45-170/+155
2015-04-12NFS: fix BUG() crash in notify_change() with patch to chown_common()Andrew Elble1-1/+1
We have observed a BUG() crash in fs/attr.c:notify_change(). The crash occurs during an rsync into a filesystem that is exported via NFS. 1.) fs/attr.c:notify_change() modifies the caller's version of attr. 2.) 6de0ec00ba8d ("VFS: make notify_change pass ATTR_KILL_S*ID to setattr operations") introduced a BUG() restriction such that "no function will ever call notify_change() with both ATTR_MODE and ATTR_KILL_S*ID set". Under some circumstances though, it will have assisted in setting the caller's version of attr to this very combination. 3.) 27ac0ffeac80 ("locks: break delegations on any attribute modification") introduced code to handle breaking delegations. This can result in notify_change() being re-called. attr _must_ be explicitly reset to avoid triggering the BUG() established in #2. 4.) The path that that triggers this is via fs/open.c:chmod_common(). The combination of attr flags set here and in the first call to notify_change() along with a later failed break_deleg_wait() results in notify_change() being called again via retry_deleg without resetting attr. Solution is to move retry_deleg in chmod_common() a bit further up to ensure attr is completely reset. There are other places where this seemingly could occur, such as fs/utimes.c:utimes_common(), but the attr flags are not initially set in such a way to trigger this. Fixes: 27ac0ffeac80 ("locks: break delegations on any attribute modification") Reported-by: Eric Meddaugh <etmsys@rit.edu> Tested-by: Eric Meddaugh <etmsys@rit.edu> Signed-off-by: Andrew Elble <aweits@rit.edu> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12dcache: return -ESTALE not -EBUSY on distributed fs raceJ. Bruce Fields1-1/+1
On a distributed filesystem it's possible for lookup to discover that a directory it just found is already cached elsewhere in the directory heirarchy. The dcache won't let us keep the directory in both places, so we have to move the dentry to the new location from the place we previously had it cached. If the parent has changed, then this requires all the same locks as we'd need to do a cross-directory rename. But we're already in lookup holding one parent's i_mutex, so it's too late to acquire those locks in the right order. The (unreliable) solution in __d_unalias is to trylock() the required locks and return -EBUSY if it fails. I see no particular reason for returning -EBUSY, and -ESTALE is already the result of some other lookup races on NFS. I think -ESTALE is the more helpful error return. It also allows us to take advantage of the logic Jeff Layton added in c6a9428401c0 "vfs: fix renameat to retry on ESTALE errors" and ancestors, which hopefully resolves some of these errors before they're returned to userspace. I can reproduce these cases using NFS with: ssh root@$client ' mount -olookupcache=pos '$server':'$export' /mnt/ mkdir /mnt/TO mkdir /mnt/DIR touch /mnt/DIR/test.txt while true; do strace -e open cat /mnt/DIR/test.txt 2>&1 | grep EBUSY done ' ssh root@$server ' while true; do mv $export/DIR $export/TO/DIR mv $export/TO/DIR $export/DIR done ' It also helps to add some other concurrent use of the directory on the client (e.g., "ls /mnt/TO"). And you can replace the server-side mv's by client-side mv's that are repeatedly killed. (If the client is interrupted while waiting for the RENAME response then it's left with a dentry that has to go under one parent or the other, but it doesn't yet know which.) Acked-by: Jeff Layton <jlayton@primarydata.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12NTFS: Version 2.1.32 - Update file write from aio_write to write_iter.Anton Altaparmakov2-477/+308
Signed-off-by: Anton Altaparmakov <anton@tuxera.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12drop bogus check in file_open_root()Al Viro1-3/+0
For one thing, LOOKUP_DIRECTORY will be dealt with in do_last(). For another, name can be an empty string, but not NULL - no callers pass that and it would oops immediately if they would. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12switch security_inode_getattr() to struct path *Al Viro1-1/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12remove incorrect comment in lookup_one_len()Al Viro1-3/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12namei.c: fold do_path_lookup() into both callersAl Viro1-24/+24
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-12kill struct filename.separateAl Viro1-13/+16
just make const char iname[] the last member and compare name->name with name->iname instead of checking name->separate We need to make sure that out-of-line name doesn't end up allocated adjacent to struct filename refering to it; fortunately, it's easy to achieve - just allocate that struct filename with one byte in ->iname[], so that ->iname[0] will be inside the same object and thus have an address different from that of out-of-line name [spotted by Boqun Feng <boqun.feng@gmail.com>] Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11Merge remote-tracking branch 'dh/afs' into for-davemAl Viro2-5/+16
2015-04-09Merge branch 'iocb' into for-davemAl Viro45-170/+155
trivial conflict in net/socket.c and non-trivial one in crypto - that one had evaded aio_complete() removal. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-07Merge branch 'for-upstream' of ↵David S. Miller1-0/+2
git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next Johan Hedberg says: ==================== pull request: bluetooth-next 2015-04-04 Here's what's probably the last bluetooth-next pull request for 4.1: - Fixes for LE advertising data & advertising parameters - Fix for race condition with HCI_RESET flag - New BNEPGETSUPPFEAT ioctl, needed for certification - New HCI request callback type to get the resulting skb - Cleanups to use BIT() macro wherever possible - Consolidate Broadcom device entries in the btusb HCI driver - Check for valid flags in CMTP, HIDP & BNEP - Disallow local privacy & OOB data combo to prevent a potential race - Expose SMP & ECDH selftest results through debugfs - Expose current Device ID info through debugfs Please let me know if there are any issues pulling. Thanks. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-04Bluetooth: bnep: Add support for get bnep features via ioctlGrzegorz Kolodziejczyk1-0/+2
This is needed if user space wants to know supported bnep features by kernel, e.g. if kernel supports sending response to bnep setup control message. By now there is no possibility to know supported features by kernel in case of bnep. Ioctls allows only to add connection, delete connection, get connection list, get connection info. Adding connection if it's possible (establishing network device connection) is equivalent to starting bnep session. Bnep session handles data queue of transmit, receive messages over bnep channel. It means that if we add connection the received/transmitted data will be parsed immediately. In case of get bnep features we want to know before session start, if we should leave setup data on socket queue and let kernel to handle with it, or in case of no setup handling support, if we should pull this message and handle setup response within user space. Signed-off-by: Grzegorz Kolodziejczyk <grzegorz.kolodziejczyk@tieto.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-04-03Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6Linus Torvalds7-12/+32
Pull CIFS fixes from Steve French: "A set of small cifs fixes fixing a memory leak, kernel oops, and infinite loop (and some spotted by Coverity)" * 'for-next' of git://git.samba.org/sfrench/cifs-2.6: Fix warning Fix another dereference before null check warning CIFS: session servername can't be null Fix warning on impossible comparison Fix coverity warning Fix dereference before null check warning Don't ignore errors on encrypting password in SMBTcon Fix warning on uninitialized buftype cifs: potential memory leaks when parsing mnt opts cifs: fix use-after-free bug in find_writable_file cifs: smb2_clone_range() - exit on unhandled error
2015-04-01kafs: Add more "unified AFS" error codesNathaniel Wesley Filardo1-1/+15
This should cover the set emitted by viced and the volume server. Signed-off-by: Nathaniel Wesley Filardo <nwf@cs.jhu.edu> Signed-off-by: David Howells <dhowells@redhat.com>
2015-04-01Merge tag 'lazytime_fix' of ↵Linus Torvalds1-10/+83
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull lazytime fixes from Ted Ts'o: "This fixes a problem in the lazy time patches, which can cause frequently updated inods to never have their timestamps updated. These changes guarantee that no timestamp on disk will be stale by more than 24 hours" * tag 'lazytime_fix' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: fs: add dirtytime_expire_seconds sysctl fs: make sure the timestamps for lazytime inodes eventually get written
2015-04-01Merge branch 'for-4.0' of git://linux-nfs.org/~bfields/linuxLinus Torvalds7-16/+36
Pull nfsd fixes from Bruce Fields: "Two main issues: - We found that turning on pNFS by default (when it's configured at build time) was too aggressive, so we want to switch the default before the 4.0 release. - Recent client changes to increase open parallelism uncovered a serious bug lurking in the server's open code. Also fix a krb5/selinux regression. The rest is mainly smaller pNFS fixes" * 'for-4.0' of git://linux-nfs.org/~bfields/linux: sunrpc: make debugfs file creation failure non-fatal nfsd: require an explicit option to enable pNFS NFSD: Fix bad update of layout in nfsd4_return_file_layout NFSD: Take care the return value from nfsd4_encode_stateid NFSD: Printk blocklayout length and offset as format 0x%llx nfsd: return correct lockowner when there is a race on hash insert nfsd: return correct openowner when there is a race to put one in the hash NFSD: Put exports after nfsd4_layout_verify fail NFSD: Error out when register_shrinker() fail NFSD: Take care the return value from nfsd4_decode_stateid NFSD: Check layout type when returning client layouts NFSD: restore trace event lost in mismerge
2015-04-01AFS: afs_send_empty_reply() doesn't require an iovec arrayDavid Howells1-4/+1
afs_send_empty_reply() doesn't require an iovec array with which to initialise the msghdr, but can pass NULL instead. Suggested-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David Howells <dhowells@redhat.com>
2015-04-01Fix warningSteve French1-0/+2
Coverity reports a warning due to unitialized attr structure in one code path. Reported by Coverity (CID 728535) Signed-off-by: Steve French <smfrench@gmail.com> Reviewed-by: Jeff Layton <jlayton@samba.org>
2015-04-01Fix another dereference before null check warningSteve French1-1/+1
null tcon is not possible in these paths so remove confusing null check Reported by Coverity (CID 728519) Signed-off-by: Steve French <smfrench@gmail.com> Reviewed-by: Jeff Layton <jlayton@samba.org>
2015-04-01CIFS: session servername can't be nullSteve French1-1/+5
remove impossible check Pointed out by Coverity (CID 115422) Signed-off-by: Steve French <smfrench@gmail.com> Reviewed-by: Jeff Layton <jlayton@samba.org>
generated by cgit v1.2.3 (git 2.39.0) at 2024-08-11 05:32:20 +0300