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2016-10-18ceph: fix non static symbol warningWei Yongjun1-2/+2
Fixes the following sparse warning: fs/ceph/xattr.c:19:28: warning: symbol 'ceph_other_xattr_handler' was not declared. Should it be static? Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2016-09-28fs: Replace current_fs_time() with current_time()Deepa Dinamani1-1/+1
current_fs_time() uses struct super_block* as an argument. As per Linus's suggestion, this is changed to take struct inode* as a parameter instead. This is because the function is primarily meant for vfs inode timestamps. Also the function was renamed as per Arnd's suggestion. Change all calls to current_fs_time() to use the new current_time() function instead. current_fs_time() will be deleted. Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-07-28ceph: rados pool namespace supportYan, Zheng1-25/+52
This patch adds codes that decode pool namespace information in cap message and request reply. Pool namespace is saved in i_layout, it will be passed to libceph when doing read/write. Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-07-28libceph: define new ceph_file_layout structureYan, Zheng1-17/+11
Define new ceph_file_layout structure and rename old ceph_file_layout to ceph_file_layout_legacy. This is preparation for adding namespace to ceph_file_layout structure. Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-28Merge branch 'for-linus' of ↵Linus Torvalds1-3/+4
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs fixes from Al Viro: "Followups to the parallel lookup work: - update docs - restore killability of the places that used to take ->i_mutex killably now that we have down_write_killable() merged - Additionally, it turns out that I missed a prerequisite for security_d_instantiate() stuff - ->getxattr() wasn't the only thing that could be called before dentry is attached to inode; with smack we needed the same treatment applied to ->setxattr() as well" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: switch ->setxattr() to passing dentry and inode separately switch xattr_handler->set() to passing dentry and inode separately restore killability of old mutex_lock_killable(&inode->i_mutex) users add down_write_killable_nested() update D/f/directory-locking
2016-05-27switch xattr_handler->set() to passing dentry and inode separatelyAl Viro1-3/+4
preparation for similar switch in ->setxattr() (see the next commit for rationale). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-05-27Merge branch 'for-linus' of ↵Linus Torvalds1-10/+15
git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client Pull Ceph updates from Sage Weil: "This changeset has a few main parts: - Ilya has finished a huge refactoring effort to sync up the client-side logic in libceph with the user-space client code, which has evolved significantly over the last couple years, with lots of additional behaviors (e.g., how requests are handled when cluster is full and transitions from full to non-full). This structure of the code is more closely aligned with userspace now such that it will be much easier to maintain going forward when behavior changes take place. There are some locking improvements bundled in as well. - Zheng adds multi-filesystem support (multiple namespaces within the same Ceph cluster) - Zheng has changed the readdir offsets and directory enumeration so that dentry offsets are hash-based and therefore stable across directory fragmentation events on the MDS. - Zheng has a smorgasbord of bug fixes across fs/ceph" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (71 commits) ceph: fix wake_up_session_cb() ceph: don't use truncate_pagecache() to invalidate read cache ceph: SetPageError() for writeback pages if writepages fails ceph: handle interrupted ceph_writepage() ceph: make ceph_update_writeable_page() uninterruptible libceph: make ceph_osdc_wait_request() uninterruptible ceph: handle -EAGAIN returned by ceph_update_writeable_page() ceph: make fault/page_mkwrite return VM_FAULT_OOM for -ENOMEM ceph: block non-fatal signals for fault/page_mkwrite ceph: make logical calculation functions return bool ceph: tolerate bad i_size for symlink inode ceph: improve fragtree change detection ceph: keep leaf frag when updating fragtree ceph: fix dir_auth check in ceph_fill_dirfrag() ceph: don't assume frag tree splits in mds reply are sorted ceph: fix inode reference leak ceph: using hash value to compose dentry offset ceph: don't forbid marking directory complete after forward seek ceph: record 'offset' for each entry of readdir result ceph: define 'end/complete' in readdir reply as bit flags ...
2016-05-26ceph: use CEPH_MDS_OP_RMXATTR request to remove xattrYan, Zheng1-6/+11
Setxattr with NULL value and XATTR_REPLACE flag should be equivalent to removexattr. But current MDS does not support deleting vxattrs through MDS_OP_SETXATTR request. The workaround is sending MDS_OP_RMXATTR request if setxattr actually removs xattr. Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26libceph: a major OSD client updateIlya Dryomov1-4/+4
This is a major sync up, up to ~Jewel. The highlights are: - per-session request trees (vs a global per-client tree) - per-session locking (vs a global per-client rwlock) - homeless OSD session - no ad-hoc global per-client lists - support for pool quotas - foundation for watch/notify v2 support - foundation for map check (pool deletion detection) support The switchover is incomplete: lingering requests can be setup and teared down but aren't ever reestablished. This functionality is restored with the introduction of the new lingering infrastructure (ceph_osd_linger_request, linger_work, etc) in a later commit. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2016-04-23ceph: kill __ceph_removexattr()Yan, Zheng1-126/+0
when removing a xattr, generic_removexattr() calls __ceph_setxattr() with NULL value and XATTR_REPLACE flag. __ceph_removexattr() is not used any more. Signed-off-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-04-23ceph: Switch to generic xattr handlersAndreas Gruenbacher1-39/+27
Add a catch-all xattr handler at the end of ceph_xattr_handlers. Check for valid attribute names there, and remove those checks from __ceph_{get,set,remove}xattr instead. No "system.*" xattrs need to be handled by the catch-all handler anymore. The set xattr handler is called with a NULL value to indicate that the attribute should be removed; __ceph_setxattr already handles that case correctly (ceph_set_acl could already calling __ceph_setxattr with a NULL value). Move the check for snapshots from ceph_{set,remove}xattr into __ceph_{set,remove}xattr. With that, ceph_{get,set,remove}xattr can be replaced with the generic iops. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-04-23ceph: Get rid of d_find_alias in ceph_set_aclAndreas Gruenbacher1-16/+12
Create a variant of ceph_setattr that takes an inode instead of a dentry. Change __ceph_setxattr (and also __ceph_removexattr) to take an inode instead of a dentry. Use those in ceph_set_acl so that we no longer need a dentry there. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-04-11->getxattr(): pass dentry and inode as separate argumentsAl Viro1-4/+4
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-03-25ceph: fix security xattr deadlockYan, Zheng1-3/+65
When security is enabled, security module can call filesystem's getxattr/setxattr callbacks during d_instantiate(). For cephfs, d_instantiate() is usually called by MDS' dispatch thread, while handling MDS reply. If the MDS reply does not include xattrs and corresponding caps, getxattr/setxattr need to send a new request to MDS and waits for the reply. This makes MDS' dispatch sleep, nobody handles later MDS replies. The fix is make sure lookup/atomic_open reply include xattrs and corresponding caps. So getxattr can be handled by cached xattrs. This requires some modification to both MDS and request message. (Client tells MDS what caps it wants; MDS encodes proper caps in the reply) Smack security module may call setxattr during d_instantiate(). Unlike getxattr, we can't force MDS to issue CEPH_CAP_XATTR_EXCL to us. So just make setxattr return error when called by MDS' dispatch thread. Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-03-25ceph: don't request vxattrs from MDSYan, Zheng1-2/+4
It's uselese because MDS reply does not carry any vxattr. Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-03-25ceph: replace CURRENT_TIME by current_fs_time()Deepa Dinamani1-2/+2
CURRENT_TIME macro is not appropriate for filesystems as it doesn't use the right granularity for filesystem timestamps. Use current_fs_time() instead. Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com> Signed-off-by: Yan, Zheng <zyan@redhat.com>
2015-06-25ceph: pre-allocate data structure that tracks caps flushingYan, Zheng1-2/+18
Signed-off-by: Yan, Zheng <zyan@redhat.com>
2015-06-25ceph: take snap_rwsem when accessing snap realm's cached_contextYan, Zheng1-6/+39
When ceph inode's i_head_snapc is NULL, __ceph_mark_dirty_caps() accesses snap realm's cached_context. So we need take read lock of snap_rwsem. Signed-off-by: Yan, Zheng <zyan@redhat.com>
2015-04-27Merge branch 'for-linus' of ↵Linus Torvalds1-8/+8
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull fourth vfs update from Al Viro: "d_inode() annotations from David Howells (sat in for-next since before the beginning of merge window) + four assorted fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: RCU pathwalk breakage when running into a symlink overmounting something fix I_DIO_WAKEUP definition direct-io: only inc/dec inode->i_dio_count for file systems fs/9p: fix readdir() VFS: assorted d_backing_inode() annotations VFS: fs/inode.c helpers: d_inode() annotations VFS: fs/cachefiles: d_backing_inode() annotations VFS: fs library helpers: d_inode() annotations VFS: assorted weird filesystems: d_inode() annotations VFS: normal filesystems (and lustre): d_inode() annotations VFS: security/: d_inode() annotations VFS: security/: d_backing_inode() annotations VFS: net/: d_inode() annotations VFS: net/unix: d_backing_inode() annotations VFS: kernel/: d_inode() annotations VFS: audit: d_backing_inode() annotations VFS: Fix up some ->d_inode accesses in the chelsio driver VFS: Cachefiles should perform fs modifications on the top layer only VFS: AF_UNIX sockets should call mknod on the top layer only
2015-04-20ceph: kstrdup() memory handlingSanidhya Kashyap1-7/+16
Currently, there is no check for the kstrdup() for r_path2, r_path1 and snapdir_name as various locations as there is a possibility of failure during memory pressure. Therefore, returning ENOMEM where the checks have been missed. Signed-off-by: Sanidhya Kashyap <sanidhya.gatech@gmail.com> Signed-off-by: Yan, Zheng <zyan@redhat.com>
2015-04-15VFS: normal filesystems (and lustre): d_inode() annotationsDavid Howells1-8/+8
that's the bulk of filesystem drivers dealing with inodes of their own Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-12-17ceph: fix setting empty extended attributeYan, Zheng1-2/+5
make sure 'value' is not null. otherwise __ceph_setxattr will remove the extended attribute. Signed-off-by: Yan, Zheng <zyan@redhat.com> Reviewed-by: Sage Weil <sage@redhat.com>
2014-10-14ceph: use pagelist to present MDS request dataYan, Zheng1-31/+18
Current code uses page array to present MDS request data. Pages in the array are allocated/freed by caller of ceph_mdsc_do_request(). If request is interrupted, the pages can be freed while they are still being used by the request message. The fix is use pagelist to present MDS request data. Pagelist is reference counted. Signed-off-by: Yan, Zheng <zyan@redhat.com> Reviewed-by: Sage Weil <sage@redhat.com>
2014-10-14ceph: fix llistxattr on symlinkYan, Zheng1-2/+1
only regular file and directory have vxattrs. Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-10-14ceph: request xattrs if xattr_version is zeroYan, Zheng1-19/+10
Following sequence of events can happen. - Client releases an inode, queues cap release message. - A 'lookup' reply brings the same inode back, but the reply doesn't contain xattrs because MDS didn't receive the cap release message and thought client already has up-to-data xattrs. The fix is force sending a getattr request to MDS if xattrs_version is 0. The getattr mask is set to CEPH_STAT_CAP_XATTR, so MDS knows client does not have xattr. Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-07-28ceph: fix sizeof(struct tYpO *) typoIlya Dryomov1-1/+1
struct ceph_xattr -> struct ceph_inode_xattr Reported-by: Toralf Förster <toralf.foerster@gmx.de> Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-07-28ceph: remove redundant memset(0)Ilya Dryomov1-1/+1
xattrs array of pointers is allocated with kcalloc() - no need to memset() it to 0 right after that. Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Alex Elder <elder@linaro.org>
2014-04-05ceph: don't include ceph.{file,dir}.layout vxattr in listxattr()Yan, Zheng1-2/+2
This avoids 'cp -a' modifying layout of new files/directories. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
2014-04-05ceph: check buffer size in ceph_vxattrcb_layout()Yan, Zheng1-9/+25
If buffer size is zero, return the size of layout vxattr. If buffer size is not zero, check if it is large enough for layout vxattr. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
2014-04-03ceph: do not chain inode updates to parent fsyncSage Weil1-8/+2
The fsync(dirfd) only covers namespace operations, not inode updates. We do not need to cover setattr variants or O_TRUNC. Reported-by: Al Viro <viro@xeniv.linux.org.uk> Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Yan, Zheng <zheng.z.yan@intel.com>
2014-02-18ceph: fix ceph_removexattr()Yan, Zheng1-1/+1
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
2014-02-18ceph: remove xattr when null value is given to setxattr()Yan, Zheng1-2/+14
For the setxattr request, introduce a new flag CEPH_XATTR_REMOVE to distinguish null value case from the zero-length value case. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
2014-02-18ceph: properly handle XATTR_CREATE and XATTR_REPLACEYan, Zheng1-12/+26
return -EEXIST if XATTR_CREATE is set and xattr alread exists. return -ENODATA if XATTR_REPLACE is set but xattr does not exist. Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
2014-01-29ceph: Fix up after semantic merge conflictLinus Torvalds1-2/+3
The previous ceph-client merge resulted in ceph not even building, because there was a merge conflict that wasn't visible as an actual data conflict: commit 7221fe4c2ed7 ("ceph: add acl for cephfs") added support for POSIX ACL's into Ceph, but unluckily we also had the VFS tree change a lot of the POSIX ACL helper functions to be much more helpful to filesystems (see for example commits 2aeccbe957d0 "fs: add generic xattr_acl handlers", 5bf3258fd2ac "fs: make posix_acl_chmod more useful" and 37bc15392a23 "fs: make posix_acl_create more useful") The reason this conflict wasn't obvious was many-fold: because it was a semantic conflict rather than a data conflict, it wasn't visible in the git merge as a conflict. And because the VFS tree hadn't been in linux-next, people hadn't become aware of it that way. And because I was at jury duty this morning, I was using my laptop and as a result not doing constant "allmodconfig" builds. Anyway, this fixes the build and generally removes a fair chunk of the Ceph POSIX ACL support code, since the improved helpers seem to match really well for Ceph too. But I don't actually have any way to *test* the end result, and I was really hoping for some ACK's for this. Oh, well. Not compiling certainly doesn't make things easier to test, so I'm committing this without the acks after having waited for four hours... Plus it's what I would have done for the merge had I noticed the semantic conflict.. Reported-by: Dave Jones <davej@redhat.com> Cc: Sage Weil <sage@inktank.com> Cc: Guangliang Zhao <lucienchao@gmail.com> Cc: Li Wang <li.wang@ubuntykylin.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-12-31ceph: add acl for cephfsGuangliang Zhao1-12/+48
Signed-off-by: Guangliang Zhao <lucienchao@gmail.com> Reviewed-by: Li Wang <li.wang@ubuntykylin.com> Reviewed-by: Zheng Yan <zheng.z.yan@intel.com>
2013-07-04ceph: fix sleeping function called from invalid context.majianpeng1-4/+5
[ 1121.231883] BUG: sleeping function called from invalid context at kernel/rwsem.c:20 [ 1121.231935] in_atomic(): 1, irqs_disabled(): 0, pid: 9831, name: mv [ 1121.231971] 1 lock held by mv/9831: [ 1121.231973] #0: (&(&ci->i_ceph_lock)->rlock){+.+...},at:[<ffffffffa02bbd38>] ceph_getxattr+0x58/0x1d0 [ceph] [ 1121.231998] CPU: 3 PID: 9831 Comm: mv Not tainted 3.10.0-rc6+ #215 [ 1121.232000] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./To be filled by O.E.M., BIOS 080015 11/09/2011 [ 1121.232027] ffff88006d355a80 ffff880092f69ce0 ffffffff8168348c ffff880092f69cf8 [ 1121.232045] ffffffff81070435 ffff88006d355a20 ffff880092f69d20 ffffffff816899ba [ 1121.232052] 0000000300000004 ffff8800b76911d0 ffff88006d355a20 ffff880092f69d68 [ 1121.232056] Call Trace: [ 1121.232062] [<ffffffff8168348c>] dump_stack+0x19/0x1b [ 1121.232067] [<ffffffff81070435>] __might_sleep+0xe5/0x110 [ 1121.232071] [<ffffffff816899ba>] down_read+0x2a/0x98 [ 1121.232080] [<ffffffffa02baf70>] ceph_vxattrcb_layout+0x60/0xf0 [ceph] [ 1121.232088] [<ffffffffa02bbd7f>] ceph_getxattr+0x9f/0x1d0 [ceph] [ 1121.232093] [<ffffffff81188d28>] vfs_getxattr+0xa8/0xd0 [ 1121.232097] [<ffffffff8118900b>] getxattr+0xab/0x1c0 [ 1121.232100] [<ffffffff811704f2>] ? final_putname+0x22/0x50 [ 1121.232104] [<ffffffff81155f80>] ? kmem_cache_free+0xb0/0x260 [ 1121.232107] [<ffffffff811704f2>] ? final_putname+0x22/0x50 [ 1121.232110] [<ffffffff8109e63d>] ? trace_hardirqs_on+0xd/0x10 [ 1121.232114] [<ffffffff816957a7>] ? sysret_check+0x1b/0x56 [ 1121.232120] [<ffffffff81189c9c>] SyS_fgetxattr+0x6c/0xc0 [ 1121.232125] [<ffffffff81695782>] system_call_fastpath+0x16/0x1b [ 1121.232129] BUG: scheduling while atomic: mv/9831/0x10000002 [ 1121.232154] 1 lock held by mv/9831: [ 1121.232156] #0: (&(&ci->i_ceph_lock)->rlock){+.+...}, at: [<ffffffffa02bbd38>] ceph_getxattr+0x58/0x1d0 [ceph] I think move the ci->i_ceph_lock down is safe because we can't free ceph_inode_info at there. CC: stable@vger.kernel.org # 3.8+ Signed-off-by: Jianpeng Ma <majianpeng@gmail.com> Reviewed-by: Sage Weil <sage@inktank.com>
2013-02-26ceph: eliminate sparse warnings in fs codeAlex Elder1-2/+2
Fix the causes for sparse warnings reported in the ceph file system code. Here there are only two (and they're sort of silly but they're easy to fix). This partially resolves: http://tracker.ceph.com/issues/4184 Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Alex Elder <elder@inktank.com> Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
2013-02-14ceph: implement hidden per-field ceph.*.layout.* vxattrsSage Weil1-0/+59
Allow individual fields of the layout to be fetched via getxattr. The ceph.dir.layout.* vxattr with "disappear" if the exists_cb indicates there no dir layout set. Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Sam Lang <sam.lang@inktank.com>
2013-02-14ceph: add ceph.dir.layout vxattrSage Weil1-0/+8
This virtual xattr will only appear when there is a dir layout policy set on the directory. It can be set via setxattr and removed via removexattr (implemented by the MDS). Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Sam Lang <sam.lang@inktank.com>
2013-02-14ceph: change ceph.file.layout.* implementation, contentSage Weil1-14/+53
Implement a new method to generate the ceph.file.layout vxattr using the new framework. Use 'stripe_unit' instead of 'chunk_size'. Include pool name, either as a string or as an integer. Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Sam Lang <sam.lang@inktank.com>
2013-02-14ceph: fix listxattr handling for vxattrsSage Weil1-6/+13
Only include vxattrs in the result if they are not hidden and exist (as determined by the exists_cb callback). Note that the buffer size we return when 0 is passed in always includes vxattrs that *might* exist, forming an upper bound. Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Sam Lang <sam.lang@inktank.com>
2013-02-14ceph: fix getxattr vxattr handlingSage Weil1-12/+8
Change the vxattr handling for getxattr so that vxattrs are checked prior to any xattr content, and never after. Enforce vxattr existence via the exists_cb callback. Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Sam Lang <sam.lang@inktank.com>
2013-02-14ceph: add exists_cb to vxattr structSage Weil1-0/+2
Allow for a callback to dynamically determine if a vxattr exists for the given inode. Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Sam Lang <sam.lang@inktank.com>
2013-02-14ceph: pass ceph.* removexattrs through to MDSSage Weil1-0/+5
If we do not explicitly recognized a vxattr (e.g., as readonly), pass the request through to the MDS and deal with it there. Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Sam Lang <sam.lang@inktank.com>
2013-02-14ceph: pass unhandled ceph.* setxattrs through to MDSSage Weil1-0/+5
If we do not specifically understand a setxattr on a ceph.* virtual xattr, send it through to the MDS. This allows us to implement new functionality via the MDS without direct support on the client side. Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Sam Lang <sam.lang@inktank.com>
2013-02-14ceph: support hidden vxattrsSage Weil1-9/+11
Add ability to flag virtual xattrs as hidden, such that you can getxattr them but they do not appear in listxattr. Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Sam Lang <sam.lang@inktank.com>
2013-02-14ceph: remove 'ceph.layout' virtual xattrSage Weil1-7/+0
This has been deprecated since v3.3, 114fc474. Kill it. Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Sam Lang <sam.lang@inktank.com>
2012-07-31ceph: fix potential double freeAlan Cox1-0/+1
We re-run the loop but we don't re-set the attrs pointer back to NULL. Signed-off-by: Alan Cox <alan@linux.intel.com> Reviewed-by: Alex Elder <elder@inktank.com>
2012-05-08ceph: drop support for preferred_osd pgsSage Weil1-9/+0
This was an ill-conceived feature that has been removed from Ceph. Do this gracefully: - reject attempts to specify a preferred_osd via the ioctl - stop exposing this information via virtual xattrs - always fill in -1 for requests, in case we talk to an older server - don't calculate preferred_osd placements/pgids Reviewed-by: Alex Elder <elder@inktank.com> Signed-off-by: Sage Weil <sage@inktank.com>
2012-03-22ceph: fix three bugs, two in ceph_vxattrcb_file_layout()Alex Elder1-3/+8
In ceph_vxattrcb_file_layout(), there is a check to determine whether a preferred PG should be formatted into the output buffer. That check assumes that a preferred PG number of 0 indicates "no preference," but that is wrong. No preference is indicated by a negative (specifically, -1) PG number. In addition, if that condition yields true, the preferred value is formatted into a sized buffer, but the size consumed by the earlier snprintf() call is not accounted for, opening up the possibilty of a buffer overrun. Finally, in ceph_vxattrcb_dir_rctime() where the nanoseconds part of the time displayed did not include leading 0's, which led to erroneous (sub-second portion of) time values being shown. This fixes these three issues: http://tracker.newdream.net/issues/2155 http://tracker.newdream.net/issues/2156 http://tracker.newdream.net/issues/2157 Signed-off-by: Alex Elder <elder@dreamhost.com> Reviewed-by: Sage Weil <sage@newdream.net>
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