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/linux-master/fs/xfs/libxfs/ | ||
H A D | xfs_attr_remote.c | diff 0e6acf29 Fri May 21 00:51:23 MDT 2021 Allison Henderson <allison.henderson@oracle.com> xfs: Remove xfs_attr_rmtval_set This function is no longer used, so it is safe to remove Signed-off-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com> diff b5572597 Mon Jan 08 11:51:08 MST 2018 Darrick J. Wong <darrick.wong@oracle.com> xfs: create a new buf_ops pointer to verify structure metadata Expose all metadata structure buffer verifier functions via buf_ops. These will be used by the online scrub mechanism to look for problems with buffers that are already sitting around in memory. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> diff bc1a09b8 Mon Jan 08 11:51:03 MST 2018 Darrick J. Wong <darrick.wong@oracle.com> xfs: refactor verifier callers to print address of failing check Refactor the callers of verifiers to print the instruction address of a failing check. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> diff a6a781a5 Mon Jan 08 11:51:03 MST 2018 Darrick J. Wong <darrick.wong@oracle.com> xfs: have buffer verifier functions report failing address Modify each function that checks the contents of a metadata buffer to return the instruction address of the failing test so that we can report more precise failure errors to the log. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> diff 31ca03c9 Mon Jan 08 11:51:02 MST 2018 Darrick J. Wong <darrick.wong@oracle.com> xfs: refactor xfs_verifier_error and xfs_buf_ioerror Since all verification errors also mark the buffer as having an error, we can combine these two calls. Later we'll add a xfs_failaddr_t parameter to promote the idea of reporting corruption errors and the address of the failing check to enable better debugging reports. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> diff 51fcbfe7 Sun Oct 11 23:03:59 MDT 2015 Jan Tulak <jtulak@redhat.com> xfs: avoid dependency on Linux XATTR_SIZE_MAX Currently, we depends on Linux XATTR value for on disk definition. Which causes trouble on other platforms and maybe also if this value was to change. Fix it by creating a custom definition independent from those in Linux (although with the same values), so it is OK with the be16 fields used for holding these attributes. This patch reflects a change in xfsprogs. Signed-off-by: Jan Tulak <jtulak@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com> diff 51fcbfe7 Sun Oct 11 23:03:59 MDT 2015 Jan Tulak <jtulak@redhat.com> xfs: avoid dependency on Linux XATTR_SIZE_MAX Currently, we depends on Linux XATTR value for on disk definition. Which causes trouble on other platforms and maybe also if this value was to change. Fix it by creating a custom definition independent from those in Linux (although with the same values), so it is OK with the be16 fields used for holding these attributes. This patch reflects a change in xfsprogs. Signed-off-by: Jan Tulak <jtulak@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com> diff ab7bb610 Tue Jul 28 19:51:01 MDT 2015 Dave Chinner <dchinner@redhat.com> xfs: xfs_bunmapi() does not need XFS_BMAPI_METADATA flag xfs_bunmapi() doesn't care what type of extent is being freed and does not look at the XFS_BMAPI_METADATA flag at all. As such we can remove the XFS_BMAPI_METADATA from all callers that use it. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com> |
H A D | xfs_format.h | diff 663b8db7 Mon Oct 16 10:51:16 MDT 2023 Darrick J. Wong <djwong@kernel.org> xfs: use accessor functions for summary info words Create get and set functions for rtsummary words so that we can redefine the ondisk format with a specific endianness. Note that this requires the definition of a distinct type for ondisk summary info words so that the compiler can perform proper typechecking. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> diff 4ea1ff3b Mon Aug 17 10:59:51 MDT 2020 Darrick J. Wong <darrick.wong@oracle.com> xfs: widen ondisk quota expiration timestamps to handle y2038+ Enable the bigtime feature for quota timers. We decrease the accuracy of the timers to ~4s in exchange for being able to set timers up to the bigtime maximum. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Allison Collins <allison.henderson@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> diff a990f7a8 Wed Jul 15 19:39:51 MDT 2020 Darrick J. Wong <darrick.wong@oracle.com> xfs: improve ondisk dquot flags checking Create an XFS_DQTYPE_ANY mask for ondisk dquots flags, and use that to ensure that we never accept any garbage flags when we're loading dquots. While we're at it, restructure the quota type flag checking to use the proper masking. Note that I plan to add y2038 support soon, which will require a new xfs_dqtype_t flag for extended timestamp support, hence all the work to make the type masking work correctly. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> diff 51dbb1be Tue Jul 14 11:37:32 MDT 2020 Darrick J. Wong <darrick.wong@oracle.com> xfs: remove qcore from incore dquots Now that we've stopped using qcore entirely, drop it from the incore dquot. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> diff 51fcbfe7 Sun Oct 11 23:03:59 MDT 2015 Jan Tulak <jtulak@redhat.com> xfs: avoid dependency on Linux XATTR_SIZE_MAX Currently, we depends on Linux XATTR value for on disk definition. Which causes trouble on other platforms and maybe also if this value was to change. Fix it by creating a custom definition independent from those in Linux (although with the same values), so it is OK with the be16 fields used for holding these attributes. This patch reflects a change in xfsprogs. Signed-off-by: Jan Tulak <jtulak@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com> diff 51fcbfe7 Sun Oct 11 23:03:59 MDT 2015 Jan Tulak <jtulak@redhat.com> xfs: avoid dependency on Linux XATTR_SIZE_MAX Currently, we depends on Linux XATTR value for on disk definition. Which causes trouble on other platforms and maybe also if this value was to change. Fix it by creating a custom definition independent from those in Linux (although with the same values), so it is OK with the be16 fields used for holding these attributes. This patch reflects a change in xfsprogs. Signed-off-by: Jan Tulak <jtulak@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com> |
/linux-master/fs/xfs/ | ||
H A D | xfs_ioctl.c | diff e89ab76d Sun Jun 05 19:51:23 MDT 2022 Darrick J. Wong <djwong@kernel.org> xfs: preserve DIFLAG2_NREXT64 when setting other inode attributes It is vitally important that we preserve the state of the NREXT64 inode flag when we're changing the other flags2 fields. Fixes: 9b7d16e34bbe ("xfs: Introduce XFS_DIFLAG2_NREXT64 and associated helpers") Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Chandan Babu R <chandan.babu@oracle.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> diff 4d1b97f9 Fri Jan 07 18:45:51 MST 2022 Darrick J. Wong <djwong@kernel.org> xfs: kill the XFS_IOC_{ALLOC,FREE}SP* ioctls According to the glibc compat header for Irix 4, these ioctls originated in April 1991 as a (somewhat clunky) way to preallocate space at the end of a file on an EFS filesystem. XFS, which was released in Irix 5.3 in December 1993, picked up these ioctls to maintain compatibility and they were ported to Linux in the early 2000s. Recently it was pointed out to me they still lurk in the kernel, even though the Linux fallocate syscall supplanted the functionality a long time ago. fstests doesn't seem to include any real functional or stress tests for these ioctls, which means that the code quality is ... very questionable. Most notably, it was a stale disk block exposure vector for 21 years and nobody noticed or complained. As mature programmers say, "If you're not testing it, it's broken." Given all that, let's withdraw these ioctls from the XFS userspace API. Normally we'd set a long deprecation process, but I estimate that there aren't any real users, so let's trigger a warning in dmesg and return -ENOTTY. See: CVE-2021-4155 Augments: 983d8e60f508 ("xfs: map unwritten blocks in XFS_IOC_{ALLOC,FREE}SP just like fallocate") Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Eric Sandeen <sandeen@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> diff 5aa5b278 Mon Jul 12 01:58:51 MDT 2021 Darrick J. Wong <djwong@kernel.org> xfs: don't expose misaligned extszinherit hints to userspace Commit 603f000b15f2 changed xfs_ioctl_setattr_check_extsize to reject an attempt to set an EXTSZINHERIT extent size hint on a directory with RTINHERIT set if the hint isn't a multiple of the realtime extent size. However, I have recently discovered that it is possible to change the realtime extent size when adding a rt device to a filesystem, which means that the existence of directories with misaligned inherited hints is not an accident. As a result, it's possible that someone could have set a valid hint and added an rt volume with a different rt extent size, which invalidates the ondisk hints. After such a sequence, FSGETXATTR will report a misaligned hint, which FSSETXATTR will trip over, causing confusion if the user was doing the usual GET/SET sequence to change some other attribute. Change xfs_fill_fsxattr to omit the hint if it isn't aligned properly. Fixes: 603f000b15f2 ("xfs: validate extsz hints against rt extent size when rtinherit is set") Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> diff b26b2bf1 Mon Jun 07 10:34:51 MDT 2021 Darrick J. Wong <djwong@kernel.org> xfs: rename struct xfs_eofblocks to xfs_icwalk The xfs_eofblocks structure is no longer well-named -- nowadays it provides optional filtering criteria to any walk of the incore inode cache. Only one of the cache walk goals has anything to do with clearing of speculative post-EOF preallocations, so change the name to be more appropriate. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com> diff 2d53f66b Mon Jun 07 10:34:51 MDT 2021 Darrick J. Wong <djwong@kernel.org> xfs: change the prefix of XFS_EOF_FLAGS_* to XFS_ICWALK_FLAG_ In preparation for renaming struct xfs_eofblocks to struct xfs_icwalk, change the prefix of the existing XFS_EOF_FLAGS_* flags to XFS_ICWALK_FLAG_ and convert all the existing users. This adds a degree of interface separation between the ioctl definitions and the incore parameters. Since FLAGS_UNION is only used in xfs_icache.c, move it there as a private flag. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com> diff 53004ee7 Tue Apr 20 16:54:36 MDT 2021 Gustavo A. R. Silva <gustavoars@kernel.org> xfs: Fix fall-through warnings for Clang In preparation to enable -Wimplicit-fallthrough for Clang, fix the following warnings by replacing /* fall through */ comments, and its variants, with the new pseudo-keyword macro fallthrough: fs/xfs/libxfs/xfs_alloc.c:3167:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/libxfs/xfs_da_btree.c:286:3: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/libxfs/xfs_ag_resv.c:346:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/libxfs/xfs_ag_resv.c:388:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/xfs_bmap_util.c:246:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/xfs_export.c:88:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/xfs_export.c:96:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/xfs_file.c:867:3: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/xfs_ioctl.c:562:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/xfs_ioctl.c:1548:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/xfs_iomap.c:1040:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/xfs_inode.c:852:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/xfs_log.c:2627:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/xfs_trans_buf.c:298:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/scrub/bmap.c:275:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/scrub/btree.c:48:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/scrub/common.c:85:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/scrub/common.c:138:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/scrub/common.c:698:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/scrub/dabtree.c:51:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/scrub/repair.c:951:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] fs/xfs/scrub/agheader.c:89:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] Notice that Clang doesn't recognize /* fall through */ comments as implicit fall-through markings, so in order to globally enable -Wimplicit-fallthrough for Clang, these comments need to be replaced with fallthrough; in the whole codebase. Link: https://github.com/KSPP/linux/issues/115 Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> diff 603f000b Wed May 12 01:51:26 MDT 2021 Darrick J. Wong <djwong@kernel.org> xfs: validate extsz hints against rt extent size when rtinherit is set The RTINHERIT bit can be set on a directory so that newly created regular files will have the REALTIME bit set to store their data on the realtime volume. If an extent size hint (and EXTSZINHERIT) are set on the directory, the hint will also be copied into the new file. As pointed out in previous patches, for realtime files we require the extent size hint be an integer multiple of the realtime extent, but we don't perform the same validation on a directory with both RTINHERIT and EXTSZINHERIT set, even though the only use-case of that combination is to propagate extent size hints into new realtime files. This leads to inode corruption errors when the bad values are propagated. Because there may be existing filesystems with such a configuration, we cannot simply amend the inode verifier to trip on these directories and call it a day because that will cause previously "working" filesystems to start throwing errors abruptly. Note that it's valid to have directories with rtinherit set even if there is no realtime volume, in which case the problem does not manifest because rtinherit is ignored if there's no realtime device; and it's possible that someone set the flag, crashed, repaired the filesystem (which clears the hint on the realtime file) and continued. Therefore, mitigate this issue in several ways: First, if we try to write out an inode with both rtinherit/extszinherit set and an unaligned extent size hint, turn off the hint to correct the error. Second, if someone tries to misconfigure a directory via the fssetxattr ioctl, fail the ioctl. Third, reverify both extent size hint values when we propagate heritable inode attributes from parent to child, to prevent misconfigurations from spreading. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> diff 71bddbcc Mon Mar 22 10:51:51 MDT 2021 Darrick J. Wong <djwong@kernel.org> xfs: fix scrub and remount-ro protection when running scrub While running a new fstest that races a readonly remount with scrub running in repair mode, I observed the kernel tripping over debugging assertions in the log quiesce code that were checking that the CIL was empty. When the sysadmin runs scrub in repair mode, the scrub code allocates real transactions (with reservations) to change things, but doesn't increment the superblock writers count to block a readonly remount attempt while it is running. We don't require the userspace caller to have a writable file descriptor to run repairs, so we have to call mnt_want_write_file to obtain freeze protection and increment the writers count. It's ok to remove the call to sb_start_write for the dry-run case because commit 8321ddb2fa29 removed the behavior where scrub and fsfreeze fight over the buffer LRU. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> diff 71bddbcc Mon Mar 22 10:51:51 MDT 2021 Darrick J. Wong <djwong@kernel.org> xfs: fix scrub and remount-ro protection when running scrub While running a new fstest that races a readonly remount with scrub running in repair mode, I observed the kernel tripping over debugging assertions in the log quiesce code that were checking that the CIL was empty. When the sysadmin runs scrub in repair mode, the scrub code allocates real transactions (with reservations) to change things, but doesn't increment the superblock writers count to block a readonly remount attempt while it is running. We don't require the userspace caller to have a writable file descriptor to run repairs, so we have to call mnt_want_write_file to obtain freeze protection and increment the writers count. It's ok to remove the call to sb_start_write for the dry-run case because commit 8321ddb2fa29 removed the behavior where scrub and fsfreeze fight over the buffer LRU. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> diff ac503a4c Mon Jan 08 11:51:27 MST 2018 Darrick J. Wong <darrick.wong@oracle.com> xfs: refactor the geometry structure filling function Refactor the geometry structure filling function to use the superblock to fill the fields. While we're at it, make the function less indenty and use some whitespace to make the function easier to read. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com> |
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