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* libgfapi : Fix for hardlink creation on SMB mountAnand Avati2013-08-131-0/+9
| | | | | | | | | | | | | | | | | Previously the inode of the hard link was left uninitialised hence glfs_loc_link() used to fail with invalid parameter.Since inode is same for both the files in hard link creation, updated the inode field of hard link to be same as that of the original file. Original-author: susant palai <spalai@redhat.com> Change-Id: Ifd6439867d982524a7b48bf3f6add6e844b3c4c1 BUG: 996063 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/5576 Tested-by: susant palai <spalai@redhat.com> Reviewed-by: Raghavendra Talur <rtalur@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* gfapi: perform open() on pre-existing inode in glfs_creat()Anand Avati2013-07-311-3/+7
| | | | | | | | | | | | | | | Performing syncop_create() on a pre-existing file can result in opening the linkfile if DHT has a linkfile for the file. This is because dht_create() will perform the op on the hashed_subvol() and overwrite the layout in dht_create_cbk. Change-Id: I7a0db56921ec9fc3e278e0418db3b967f81e5598 BUG: 990410 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/5447 Reviewed-by: Raghavendra Talur <rtalur@redhat.com> Tested-by: Raghavendra Talur <rtalur@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* gfapi: fix glfs_readlink()Anand Avati2013-07-311-1/+6
| | | | | | | | | | | | | glfs_readlink() is supposed to memcpy the buffer pointer returned by syncop_readlink(). Fix it. Change-Id: I5936b07abbd93cf02b354233dc60f6623e30a38b BUG: 953694 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/5439 Reviewed-by: Amar Tumballi <amarts@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Raghavendra Talur <rtalur@redhat.com>
* api: Avoid a NULL deref in glfs_open().Vijay Bellur2013-07-301-1/+1
| | | | | | | | | Change-Id: I23e9fabcb8a430bcd44595ca31460c54d7bd4a39 BUG: 953694 Signed-off-by: Vijay Bellur <vbellur@redhat.com> Reviewed-on: http://review.gluster.org/5426 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* gfapi: fix for not able to rename foldersRaghavendra Talur2013-07-161-8/+11
| | | | | | | | | | | | If oldname is being renamed to newname, we need to check for type of newname only if newname exists. Change-Id: I068a283f9ffe67fcd5e8754d6bf052a2339efbf2 BUG: 953694 Signed-off-by: Raghavendra Talur <rtalur@redhat.com> Reviewed-on: http://review.gluster.org/5333 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* gfapi: fix read past EOF in glfs_preadv()Anand Avati2013-06-201-3/+4
| | | | | | | | | | | | | | | | When syncop_preadv() returns 0, we are returning @size as-is (without modifying user passed buffer). This results in junk data being read when read offset is at or beyond EOF. Change-Id: I8aa9c957359f9a52833b944b452f501b6f5538d3 BUG: 953694 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/5236 Reviewed-by: Raghavendra Talur <rtalur@redhat.com> Reviewed-by: José Rivera <jrivera@redhat.com> Tested-by: José Rivera <jrivera@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* gfapi: async discard supportBrian Foster2013-06-131-0/+35
| | | | | | | | | | | | | | From: Bharata B Rao <bharata@linux.vnet.ibm.com> Add glfs_discard_async() to meet QEMU's discard requirements. BUG: 963678 Change-Id: I97723107fca88dd96cddc08cd67a286645a37922 Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-on: http://review.gluster.org/5144 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* glusterfs: discard (hole punch) supportBrian Foster2013-06-131-0/+34
| | | | | | | | | | | | | | | | Add support for the DISCARD file operation. Discard punches a hole in a file in the provided range. Block de-allocation is implemented via fallocate() (as requested via fuse and passed on to the brick fs) but a separate fop is created within gluster to emphasize the fact that discard changes file data (the discarded region is replaced with zeroes) and must invalidate caches where appropriate. BUG: 963678 Change-Id: I34633a0bfff2187afeab4292a15f3cc9adf261af Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-on: http://review.gluster.org/5090 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* gluster: add fallocate fop supportBrian Foster2013-06-131-0/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement support for the fallocate file operation. fallocate allocates blocks for a particular inode such that future writes to the associated region of the file are guaranteed not to fail with ENOSPC. This patch adds fallocate support to the following areas: - libglusterfs - mount/fuse - io-stats - performance/md-cache,open-behind - quota - cluster/afr,dht,stripe - rpc/xdr - protocol/client,server - io-threads - marker - storage/posix - libgfapi BUG: 949242 Change-Id: Ice8e61351f9d6115c5df68768bc844abbf0ce8bd Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-on: http://review.gluster.org/4969 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* gfapi: add new API glfs_dup() to copy a file descriptorAnand Avati2013-05-291-0/+42
| | | | | | | | | | | | Duplicate a glfs_fd file descriptor. Inherit the internal fd_t with a reference. Change-Id: Ib30e9a46b608b9f78202957f4dab6ba6265a9ec0 BUG: 953694 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/5109 Reviewed-by: Raghavendra Talur <rtalur@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* gfapi: handle graph switch (cwd, fds, locks)Anand Avati2013-05-281-64/+341
| | | | | | | | | | | | | | - Migrate open fds to new graph - Migrate locks held in open fd to new fd - Refresh CWD, so resolution of relative paths happens on refreshed inode (on new graph). Change-Id: I4b18083b9b290107ebda1f917fc85b635ab72fb4 BUG: 953694 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/5059 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Raghavendra G <raghavendra@gluster.com>
* gfapi: provide stable st_dev in stat structureAnand Avati2013-05-251-4/+12
| | | | | | | | | | | | | Samba depends on st_dev being unique and stable for different filesystems (it uses st_dev+st_ino as key to store metadata of a file). Change-Id: Ia022fabadfb5ef3fc9724c1b1ca86f1a20f98af9 BUG: 953694 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/5045 Reviewed-by: Vijay Bellur <vbellur@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* gfapi: link inodes in relevant entry FOPsAnand Avati2013-05-251-4/+69
| | | | | | | | | | | | Do not let inode linking to happen only in lookup(). While that works, it is inefficient. Change-Id: I51bbfb6255ec4324ab17ff00566375f49d120c06 BUG: 953694 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/4931 Reviewed-by: Vijay Bellur <vbellur@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* gfapi: optimistic resolution with ESTALE detectionAnand Avati2013-05-251-33/+204
| | | | | | | | | | | | | | | | | | | Enhance the path resolver to be optimistic. Instead of performing a wasteful ->lookup() fop for every component in every API call, build in speculation logic to consider the previous resolution result temporarily, and if it results in ESTALE either later in the path resolution or in the FOP, then retry resolution with ->lookup() at every level and retry the FOP. This is the same optimistic resolution/retry logic Linux kernel resolver is proposing to use. Change-Id: Iecbc25248754caf0915cd7205910563ff88ce5e7 BUG: 953694 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/4928 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* gfapi: POSIX locking supportAnand Avati2013-04-241-0/+46
| | | | | | | | | Change-Id: I37d9e1fb4a715094876be6af3856c1b4cf398021 BUG: 953694 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/4881 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* gfapi: implement readdirplus_r supportAnand Avati2013-04-241-8/+23
| | | | | | | | | | | This call is used by Samba VFS. Change-Id: Ib371502ad5a71b3b0e993f6b30e3dfb1f839c020 BUG: 953694 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/4879 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* gfapi: support for chdir() and familyAnand Avati2013-04-191-3/+167
| | | | | | | | | | | | Add support for chdir, fchdir, getcwd, realpath equivalents in GFAPI. These are required for the Samba VFS plugin. Change-Id: I91d2db9146994403c98961c489c7640c51d5add2 BUG: 953694 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/4853 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* gfapi: dict_unref() xattr_req in fop finish instead of dict_destroy()Anand Avati2013-03-071-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | The current way of calling dict_destroy() at the end of an API fop assumes that xattr_req is not stored/ref'd by any translators in the stack. However when translators like DHT store xattr_req in dht_local_t with a dict_ref() and perform dict_unref() in the unwind path, things get subject to a race. The race is between the woken up thread (by syncop_wake) i.e, the gfapi invoking thread and the thread where the FOP was unwound. As the C stack of STACK_UNWIND unwinds back, dht_local_unref() gets invoked within the DHT_STACK_UNWIND macro. This thread attempts dict_unref, which would be "safe" if it wins the race against the gfapi invoking thread. However if the gfapi invoking thread wins the race, it will perform dict_destroy() first and therefore make dict_unref() within dht_local_unref perform a double free. This is the embarrassing on-screen bug which showed up in a roomful of people during the gluster dev summit demo of qemu/libgfapi integration. Change-Id: I284c93de87cdc128d5801f42c84aa87f753090d4 BUG: 839950 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/4644 Reviewed-by: Jeff Darcy <jdarcy@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
* core: remove all the 'inner' functions in codebaseAmar Tumballi2012-12-191-22/+2
| | | | | | | | | | | | | | | | * move 'dict_keys_join()' from api/glfs_fops.c to libglusterfs/dict.c - also added an argument which is treated as a filter function if required, currently useful for fuse. * now 'make CFLAGS="-std=gnu99 -pedantic" 2>&1 | grep nested' gives no output. Change-Id: I4e18496fbd93ae1d3942026ef4931889cba015e8 Signed-off-by: Amar Tumballi <amarts@redhat.com> BUG: 875913 Reviewed-on: http://review.gluster.org/4187 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* gfapi: added more API callsAnand Avati2012-10-081-0/+1331
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - stat - lstat - access - readlink - mknod - mkdir - rmdir - symlink - rename - link - opendir - closedir - seekdir - telldir - readdir_r - statvfs - chmod - fchmod - chown - lchown - fchown - utimens - lutimens - futimens - getxattr - lgetxattr - fgetxattr - setxattr - lsetxattr - fsetxattr - listxattr - llistxattr - flistxattr - removexattr - lremovexattr - fremovexattr Change-Id: Ic2467293ddfbcefaa9b41c82cec61a5602636833 BUG: 839950 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/4022 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Amar Tumballi <amarts@redhat.com>
* gfapi: add symlink (auto resolution) support in resolverAnand Avati2012-09-171-1/+1
| | | | | | | | | | | | - new internal API glfs_lresolve() for usage with APIs like glfs_lXXXX() (e.g. glfs_lstat()) Change-Id: I61c60af6bda3072f189684ad8ac9815d59f455fc BUG: 839950 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/3866 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Amar Tumballi <amarts@redhat.com>
* syncop: handle 'dataonly' flag in syncop_fsync()Amar Tumballi2012-08-201-4/+2
| | | | | | | | | | | | * and also in syncop_readv(), don't look at _cbk args if op_ret is < 0. Change-Id: I3ab2982bc6d186e75b6adb74c8981e4ff7058bbe Signed-off-by: Amar Tumballi <amarts@redhat.com> BUG: 839950 Reviewed-on: http://review.gluster.org/3828 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
* gfapi: API/library for accessing gluster volumesAnand Avati2012-07-181-0/+829
Change-Id: Ie4cbcf91b58218bebf23cf951c313aceeb29f311 BUG: 839950 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.com/3664 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Jeff Darcy <jdarcy@redhat.com> Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com> Reviewed-by: Bharata B Rao <bharata.rao@gmail.com>
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