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OpenCloudOS-Kernel/fs/xfs/scrub/inode.c

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/*
* Copyright (C) 2017 Oracle. All Rights Reserved.
*
* Author: Darrick J. Wong <darrick.wong@oracle.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.
*
* This program is distributed in the hope that it would be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_shared.h"
#include "xfs_format.h"
#include "xfs_trans_resv.h"
#include "xfs_mount.h"
#include "xfs_defer.h"
#include "xfs_btree.h"
#include "xfs_bit.h"
#include "xfs_log_format.h"
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_inode.h"
#include "xfs_icache.h"
#include "xfs_inode_buf.h"
#include "xfs_inode_fork.h"
#include "xfs_ialloc.h"
#include "xfs_da_format.h"
#include "xfs_reflink.h"
#include "xfs_rmap.h"
#include "xfs_bmap.h"
#include "xfs_bmap_util.h"
#include "scrub/xfs_scrub.h"
#include "scrub/scrub.h"
#include "scrub/common.h"
#include "scrub/btree.h"
#include "scrub/trace.h"
/*
* Grab total control of the inode metadata. It doesn't matter here if
* the file data is still changing; exclusive access to the metadata is
* the goal.
*/
int
xfs_scrub_setup_inode(
struct xfs_scrub_context *sc,
struct xfs_inode *ip)
{
struct xfs_mount *mp = sc->mp;
int error;
/*
* Try to get the inode. If the verifiers fail, we try again
* in raw mode.
*/
error = xfs_scrub_get_inode(sc, ip);
switch (error) {
case 0:
break;
case -EFSCORRUPTED:
case -EFSBADCRC:
return xfs_scrub_trans_alloc(sc->sm, mp, &sc->tp);
default:
return error;
}
/* Got the inode, lock it and we're ready to go. */
sc->ilock_flags = XFS_IOLOCK_EXCL | XFS_MMAPLOCK_EXCL;
xfs_ilock(sc->ip, sc->ilock_flags);
error = xfs_scrub_trans_alloc(sc->sm, mp, &sc->tp);
if (error)
goto out;
sc->ilock_flags |= XFS_ILOCK_EXCL;
xfs_ilock(sc->ip, XFS_ILOCK_EXCL);
out:
/* scrub teardown will unlock and release the inode for us */
return error;
}
/* Inode core */
/*
* Validate di_extsize hint.
*
* The rules are documented at xfs_ioctl_setattr_check_extsize().
* These functions must be kept in sync with each other.
*/
STATIC void
xfs_scrub_inode_extsize(
struct xfs_scrub_context *sc,
struct xfs_buf *bp,
struct xfs_dinode *dip,
xfs_ino_t ino,
uint16_t mode,
uint16_t flags)
{
struct xfs_mount *mp = sc->mp;
bool rt_flag;
bool hint_flag;
bool inherit_flag;
uint32_t extsize;
uint32_t extsize_bytes;
uint32_t blocksize_bytes;
rt_flag = (flags & XFS_DIFLAG_REALTIME);
hint_flag = (flags & XFS_DIFLAG_EXTSIZE);
inherit_flag = (flags & XFS_DIFLAG_EXTSZINHERIT);
extsize = be32_to_cpu(dip->di_extsize);
extsize_bytes = XFS_FSB_TO_B(sc->mp, extsize);
if (rt_flag)
blocksize_bytes = mp->m_sb.sb_rextsize << mp->m_sb.sb_blocklog;
else
blocksize_bytes = mp->m_sb.sb_blocksize;
if ((hint_flag || inherit_flag) && !(S_ISDIR(mode) || S_ISREG(mode)))
goto bad;
if (hint_flag && !S_ISREG(mode))
goto bad;
if (inherit_flag && !S_ISDIR(mode))
goto bad;
if ((hint_flag || inherit_flag) && extsize == 0)
goto bad;
if (!(hint_flag || inherit_flag) && extsize != 0)
goto bad;
if (extsize_bytes % blocksize_bytes)
goto bad;
if (extsize > MAXEXTLEN)
goto bad;
if (!rt_flag && extsize > mp->m_sb.sb_agblocks / 2)
goto bad;
return;
bad:
xfs_scrub_ino_set_corrupt(sc, ino, bp);
}
/*
* Validate di_cowextsize hint.
*
* The rules are documented at xfs_ioctl_setattr_check_cowextsize().
* These functions must be kept in sync with each other.
*/
STATIC void
xfs_scrub_inode_cowextsize(
struct xfs_scrub_context *sc,
struct xfs_buf *bp,
struct xfs_dinode *dip,
xfs_ino_t ino,
uint16_t mode,
uint16_t flags,
uint64_t flags2)
{
struct xfs_mount *mp = sc->mp;
bool rt_flag;
bool hint_flag;
uint32_t extsize;
uint32_t extsize_bytes;
rt_flag = (flags & XFS_DIFLAG_REALTIME);
hint_flag = (flags2 & XFS_DIFLAG2_COWEXTSIZE);
extsize = be32_to_cpu(dip->di_cowextsize);
extsize_bytes = XFS_FSB_TO_B(sc->mp, extsize);
if (hint_flag && !xfs_sb_version_hasreflink(&mp->m_sb))
goto bad;
if (hint_flag && !(S_ISDIR(mode) || S_ISREG(mode)))
goto bad;
if (hint_flag && extsize == 0)
goto bad;
if (!hint_flag && extsize != 0)
goto bad;
if (hint_flag && rt_flag)
goto bad;
if (extsize_bytes % mp->m_sb.sb_blocksize)
goto bad;
if (extsize > MAXEXTLEN)
goto bad;
if (extsize > mp->m_sb.sb_agblocks / 2)
goto bad;
return;
bad:
xfs_scrub_ino_set_corrupt(sc, ino, bp);
}
/* Make sure the di_flags make sense for the inode. */
STATIC void
xfs_scrub_inode_flags(
struct xfs_scrub_context *sc,
struct xfs_buf *bp,
struct xfs_dinode *dip,
xfs_ino_t ino,
uint16_t mode,
uint16_t flags)
{
struct xfs_mount *mp = sc->mp;
if (flags & ~XFS_DIFLAG_ANY)
goto bad;
/* rt flags require rt device */
if ((flags & (XFS_DIFLAG_REALTIME | XFS_DIFLAG_RTINHERIT)) &&
!mp->m_rtdev_targp)
goto bad;
/* new rt bitmap flag only valid for rbmino */
if ((flags & XFS_DIFLAG_NEWRTBM) && ino != mp->m_sb.sb_rbmino)
goto bad;
/* directory-only flags */
if ((flags & (XFS_DIFLAG_RTINHERIT |
XFS_DIFLAG_EXTSZINHERIT |
XFS_DIFLAG_PROJINHERIT |
XFS_DIFLAG_NOSYMLINKS)) &&
!S_ISDIR(mode))
goto bad;
/* file-only flags */
if ((flags & (XFS_DIFLAG_REALTIME | FS_XFLAG_EXTSIZE)) &&
!S_ISREG(mode))
goto bad;
/* filestreams and rt make no sense */
if ((flags & XFS_DIFLAG_FILESTREAM) && (flags & XFS_DIFLAG_REALTIME))
goto bad;
return;
bad:
xfs_scrub_ino_set_corrupt(sc, ino, bp);
}
/* Make sure the di_flags2 make sense for the inode. */
STATIC void
xfs_scrub_inode_flags2(
struct xfs_scrub_context *sc,
struct xfs_buf *bp,
struct xfs_dinode *dip,
xfs_ino_t ino,
uint16_t mode,
uint16_t flags,
uint64_t flags2)
{
struct xfs_mount *mp = sc->mp;
if (flags2 & ~XFS_DIFLAG2_ANY)
goto bad;
/* reflink flag requires reflink feature */
if ((flags2 & XFS_DIFLAG2_REFLINK) &&
!xfs_sb_version_hasreflink(&mp->m_sb))
goto bad;
/* cowextsize flag is checked w.r.t. mode separately */
/* file/dir-only flags */
if ((flags2 & XFS_DIFLAG2_DAX) && !(S_ISREG(mode) || S_ISDIR(mode)))
goto bad;
/* file-only flags */
if ((flags2 & XFS_DIFLAG2_REFLINK) && !S_ISREG(mode))
goto bad;
/* realtime and reflink make no sense, currently */
if ((flags & XFS_DIFLAG_REALTIME) && (flags2 & XFS_DIFLAG2_REFLINK))
goto bad;
/* dax and reflink make no sense, currently */
if ((flags2 & XFS_DIFLAG2_DAX) && (flags2 & XFS_DIFLAG2_REFLINK))
goto bad;
return;
bad:
xfs_scrub_ino_set_corrupt(sc, ino, bp);
}
/* Scrub all the ondisk inode fields. */
STATIC void
xfs_scrub_dinode(
struct xfs_scrub_context *sc,
struct xfs_buf *bp,
struct xfs_dinode *dip,
xfs_ino_t ino)
{
struct xfs_mount *mp = sc->mp;
size_t fork_recs;
unsigned long long isize;
uint64_t flags2;
uint32_t nextents;
uint16_t flags;
uint16_t mode;
flags = be16_to_cpu(dip->di_flags);
if (dip->di_version >= 3)
flags2 = be64_to_cpu(dip->di_flags2);
else
flags2 = 0;
/* di_mode */
mode = be16_to_cpu(dip->di_mode);
switch (mode & S_IFMT) {
case S_IFLNK:
case S_IFREG:
case S_IFDIR:
case S_IFCHR:
case S_IFBLK:
case S_IFIFO:
case S_IFSOCK:
/* mode is recognized */
break;
default:
xfs_scrub_ino_set_corrupt(sc, ino, bp);
break;
}
/* v1/v2 fields */
switch (dip->di_version) {
case 1:
/*
* We autoconvert v1 inodes into v2 inodes on writeout,
* so just mark this inode for preening.
*/
xfs_scrub_ino_set_preen(sc, ino, bp);
break;
case 2:
case 3:
if (dip->di_onlink != 0)
xfs_scrub_ino_set_corrupt(sc, ino, bp);
if (dip->di_mode == 0 && sc->ip)
xfs_scrub_ino_set_corrupt(sc, ino, bp);
if (dip->di_projid_hi != 0 &&
!xfs_sb_version_hasprojid32bit(&mp->m_sb))
xfs_scrub_ino_set_corrupt(sc, ino, bp);
break;
default:
xfs_scrub_ino_set_corrupt(sc, ino, bp);
return;
}
/*
* di_uid/di_gid -- -1 isn't invalid, but there's no way that
* userspace could have created that.
*/
if (dip->di_uid == cpu_to_be32(-1U) ||
dip->di_gid == cpu_to_be32(-1U))
xfs_scrub_ino_set_warning(sc, ino, bp);
/* di_format */
switch (dip->di_format) {
case XFS_DINODE_FMT_DEV:
if (!S_ISCHR(mode) && !S_ISBLK(mode) &&
!S_ISFIFO(mode) && !S_ISSOCK(mode))
xfs_scrub_ino_set_corrupt(sc, ino, bp);
break;
case XFS_DINODE_FMT_LOCAL:
if (!S_ISDIR(mode) && !S_ISLNK(mode))
xfs_scrub_ino_set_corrupt(sc, ino, bp);
break;
case XFS_DINODE_FMT_EXTENTS:
if (!S_ISREG(mode) && !S_ISDIR(mode) && !S_ISLNK(mode))
xfs_scrub_ino_set_corrupt(sc, ino, bp);
break;
case XFS_DINODE_FMT_BTREE:
if (!S_ISREG(mode) && !S_ISDIR(mode))
xfs_scrub_ino_set_corrupt(sc, ino, bp);
break;
case XFS_DINODE_FMT_UUID:
default:
xfs_scrub_ino_set_corrupt(sc, ino, bp);
break;
}
/* di_[amc]time.nsec */
if (be32_to_cpu(dip->di_atime.t_nsec) >= NSEC_PER_SEC)
xfs_scrub_ino_set_corrupt(sc, ino, bp);
if (be32_to_cpu(dip->di_mtime.t_nsec) >= NSEC_PER_SEC)
xfs_scrub_ino_set_corrupt(sc, ino, bp);
if (be32_to_cpu(dip->di_ctime.t_nsec) >= NSEC_PER_SEC)
xfs_scrub_ino_set_corrupt(sc, ino, bp);
/*
* di_size. xfs_dinode_verify checks for things that screw up
* the VFS such as the upper bit being set and zero-length
* symlinks/directories, but we can do more here.
*/
isize = be64_to_cpu(dip->di_size);
if (isize & (1ULL << 63))
xfs_scrub_ino_set_corrupt(sc, ino, bp);
/* Devices, fifos, and sockets must have zero size */
if (!S_ISDIR(mode) && !S_ISREG(mode) && !S_ISLNK(mode) && isize != 0)
xfs_scrub_ino_set_corrupt(sc, ino, bp);
/* Directories can't be larger than the data section size (32G) */
if (S_ISDIR(mode) && (isize == 0 || isize >= XFS_DIR2_SPACE_SIZE))
xfs_scrub_ino_set_corrupt(sc, ino, bp);
/* Symlinks can't be larger than SYMLINK_MAXLEN */
if (S_ISLNK(mode) && (isize == 0 || isize >= XFS_SYMLINK_MAXLEN))
xfs_scrub_ino_set_corrupt(sc, ino, bp);
/*
* Warn if the running kernel can't handle the kinds of offsets
* needed to deal with the file size. In other words, if the
* pagecache can't cache all the blocks in this file due to
* overly large offsets, flag the inode for admin review.
*/
if (isize >= mp->m_super->s_maxbytes)
xfs_scrub_ino_set_warning(sc, ino, bp);
/* di_nblocks */
if (flags2 & XFS_DIFLAG2_REFLINK) {
; /* nblocks can exceed dblocks */
} else if (flags & XFS_DIFLAG_REALTIME) {
/*
* nblocks is the sum of data extents (in the rtdev),
* attr extents (in the datadev), and both forks' bmbt
* blocks (in the datadev). This clumsy check is the
* best we can do without cross-referencing with the
* inode forks.
*/
if (be64_to_cpu(dip->di_nblocks) >=
mp->m_sb.sb_dblocks + mp->m_sb.sb_rblocks)
xfs_scrub_ino_set_corrupt(sc, ino, bp);
} else {
if (be64_to_cpu(dip->di_nblocks) >= mp->m_sb.sb_dblocks)
xfs_scrub_ino_set_corrupt(sc, ino, bp);
}
xfs_scrub_inode_flags(sc, bp, dip, ino, mode, flags);
xfs_scrub_inode_extsize(sc, bp, dip, ino, mode, flags);
/* di_nextents */
nextents = be32_to_cpu(dip->di_nextents);
fork_recs = XFS_DFORK_DSIZE(dip, mp) / sizeof(struct xfs_bmbt_rec);
switch (dip->di_format) {
case XFS_DINODE_FMT_EXTENTS:
if (nextents > fork_recs)
xfs_scrub_ino_set_corrupt(sc, ino, bp);
break;
case XFS_DINODE_FMT_BTREE:
if (nextents <= fork_recs)
xfs_scrub_ino_set_corrupt(sc, ino, bp);
break;
default:
if (nextents != 0)
xfs_scrub_ino_set_corrupt(sc, ino, bp);
break;
}
/* di_forkoff */
if (XFS_DFORK_APTR(dip) >= (char *)dip + mp->m_sb.sb_inodesize)
xfs_scrub_ino_set_corrupt(sc, ino, bp);
if (dip->di_anextents != 0 && dip->di_forkoff == 0)
xfs_scrub_ino_set_corrupt(sc, ino, bp);
if (dip->di_forkoff == 0 && dip->di_aformat != XFS_DINODE_FMT_EXTENTS)
xfs_scrub_ino_set_corrupt(sc, ino, bp);
/* di_aformat */
if (dip->di_aformat != XFS_DINODE_FMT_LOCAL &&
dip->di_aformat != XFS_DINODE_FMT_EXTENTS &&
dip->di_aformat != XFS_DINODE_FMT_BTREE)
xfs_scrub_ino_set_corrupt(sc, ino, bp);
/* di_anextents */
nextents = be16_to_cpu(dip->di_anextents);
fork_recs = XFS_DFORK_ASIZE(dip, mp) / sizeof(struct xfs_bmbt_rec);
switch (dip->di_aformat) {
case XFS_DINODE_FMT_EXTENTS:
if (nextents > fork_recs)
xfs_scrub_ino_set_corrupt(sc, ino, bp);
break;
case XFS_DINODE_FMT_BTREE:
if (nextents <= fork_recs)
xfs_scrub_ino_set_corrupt(sc, ino, bp);
break;
default:
if (nextents != 0)
xfs_scrub_ino_set_corrupt(sc, ino, bp);
}
if (dip->di_version >= 3) {
if (be32_to_cpu(dip->di_crtime.t_nsec) >= NSEC_PER_SEC)
xfs_scrub_ino_set_corrupt(sc, ino, bp);
xfs_scrub_inode_flags2(sc, bp, dip, ino, mode, flags, flags2);
xfs_scrub_inode_cowextsize(sc, bp, dip, ino, mode, flags,
flags2);
}
}
/* Map and read a raw inode. */
STATIC int
xfs_scrub_inode_map_raw(
struct xfs_scrub_context *sc,
xfs_ino_t ino,
struct xfs_buf **bpp,
struct xfs_dinode **dipp)
{
struct xfs_imap imap;
struct xfs_mount *mp = sc->mp;
struct xfs_buf *bp = NULL;
struct xfs_dinode *dip;
int error;
error = xfs_imap(mp, sc->tp, ino, &imap, XFS_IGET_UNTRUSTED);
if (error == -EINVAL) {
/*
* Inode could have gotten deleted out from under us;
* just forget about it.
*/
error = -ENOENT;
goto out;
}
if (!xfs_scrub_process_error(sc, XFS_INO_TO_AGNO(mp, ino),
XFS_INO_TO_AGBNO(mp, ino), &error))
goto out;
error = xfs_trans_read_buf(mp, sc->tp, mp->m_ddev_targp,
imap.im_blkno, imap.im_len, XBF_UNMAPPED, &bp,
NULL);
if (!xfs_scrub_process_error(sc, XFS_INO_TO_AGNO(mp, ino),
XFS_INO_TO_AGBNO(mp, ino), &error))
goto out;
/*
* Is this really an inode? We disabled verifiers in the above
* xfs_trans_read_buf call because the inode buffer verifier
* fails on /any/ inode record in the inode cluster with a bad
* magic or version number, not just the one that we're
* checking. Therefore, grab the buffer unconditionally, attach
* the inode verifiers by hand, and run the inode verifier only
* on the one inode we want.
*/
bp->b_ops = &xfs_inode_buf_ops;
dip = xfs_buf_offset(bp, imap.im_boffset);
if (xfs_dinode_verify(mp, ino, dip) != NULL ||
!xfs_dinode_good_version(mp, dip->di_version)) {
xfs_scrub_ino_set_corrupt(sc, ino, bp);
goto out_buf;
}
/* ...and is it the one we asked for? */
if (be32_to_cpu(dip->di_gen) != sc->sm->sm_gen) {
error = -ENOENT;
goto out_buf;
}
*dipp = dip;
*bpp = bp;
out:
return error;
out_buf:
xfs_trans_brelse(sc->tp, bp);
return error;
}
/*
* Make sure the finobt doesn't think this inode is free.
* We don't have to check the inobt ourselves because we got the inode via
* IGET_UNTRUSTED, which checks the inobt for us.
*/
static void
xfs_scrub_inode_xref_finobt(
struct xfs_scrub_context *sc,
xfs_ino_t ino)
{
struct xfs_inobt_rec_incore rec;
xfs_agino_t agino;
int has_record;
int error;
if (!sc->sa.fino_cur)
return;
agino = XFS_INO_TO_AGINO(sc->mp, ino);
/*
* Try to get the finobt record. If we can't get it, then we're
* in good shape.
*/
error = xfs_inobt_lookup(sc->sa.fino_cur, agino, XFS_LOOKUP_LE,
&has_record);
if (!xfs_scrub_should_check_xref(sc, &error, &sc->sa.fino_cur) ||
!has_record)
return;
error = xfs_inobt_get_rec(sc->sa.fino_cur, &rec, &has_record);
if (!xfs_scrub_should_check_xref(sc, &error, &sc->sa.fino_cur) ||
!has_record)
return;
/*
* Otherwise, make sure this record either doesn't cover this inode,
* or that it does but it's marked present.
*/
if (rec.ir_startino > agino ||
rec.ir_startino + XFS_INODES_PER_CHUNK <= agino)
return;
if (rec.ir_free & XFS_INOBT_MASK(agino - rec.ir_startino))
xfs_scrub_btree_xref_set_corrupt(sc, sc->sa.fino_cur, 0);
}
/* Cross reference the inode fields with the forks. */
STATIC void
xfs_scrub_inode_xref_bmap(
struct xfs_scrub_context *sc,
struct xfs_dinode *dip)
{
xfs_extnum_t nextents;
xfs_filblks_t count;
xfs_filblks_t acount;
int error;
/* Walk all the extents to check nextents/naextents/nblocks. */
error = xfs_bmap_count_blocks(sc->tp, sc->ip, XFS_DATA_FORK,
&nextents, &count);
if (!xfs_scrub_should_check_xref(sc, &error, NULL))
return;
if (nextents < be32_to_cpu(dip->di_nextents))
xfs_scrub_ino_xref_set_corrupt(sc, sc->ip->i_ino, NULL);
error = xfs_bmap_count_blocks(sc->tp, sc->ip, XFS_ATTR_FORK,
&nextents, &acount);
if (!xfs_scrub_should_check_xref(sc, &error, NULL))
return;
if (nextents != be16_to_cpu(dip->di_anextents))
xfs_scrub_ino_xref_set_corrupt(sc, sc->ip->i_ino, NULL);
/* Check nblocks against the inode. */
if (count + acount != be64_to_cpu(dip->di_nblocks))
xfs_scrub_ino_xref_set_corrupt(sc, sc->ip->i_ino, NULL);
}
/* Cross-reference with the other btrees. */
STATIC void
xfs_scrub_inode_xref(
struct xfs_scrub_context *sc,
xfs_ino_t ino,
struct xfs_dinode *dip)
{
struct xfs_owner_info oinfo;
xfs_agnumber_t agno;
xfs_agblock_t agbno;
int error;
if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
return;
agno = XFS_INO_TO_AGNO(sc->mp, ino);
agbno = XFS_INO_TO_AGBNO(sc->mp, ino);
error = xfs_scrub_ag_init(sc, agno, &sc->sa);
if (!xfs_scrub_xref_process_error(sc, agno, agbno, &error))
return;
xfs_scrub_xref_is_used_space(sc, agbno, 1);
xfs_scrub_inode_xref_finobt(sc, ino);
xfs_rmap_ag_owner(&oinfo, XFS_RMAP_OWN_INODES);
xfs_scrub_xref_is_owned_by(sc, agbno, 1, &oinfo);
xfs_scrub_xref_is_not_shared(sc, agbno, 1);
xfs_scrub_inode_xref_bmap(sc, dip);
xfs_scrub_ag_free(sc, &sc->sa);
}
/*
* If the reflink iflag disagrees with a scan for shared data fork extents,
* either flag an error (shared extents w/ no flag) or a preen (flag set w/o
* any shared extents). We already checked for reflink iflag set on a non
* reflink filesystem.
*/
static void
xfs_scrub_inode_check_reflink_iflag(
struct xfs_scrub_context *sc,
xfs_ino_t ino,
struct xfs_buf *bp)
{
struct xfs_mount *mp = sc->mp;
bool has_shared;
int error;
if (!xfs_sb_version_hasreflink(&mp->m_sb))
return;
error = xfs_reflink_inode_has_shared_extents(sc->tp, sc->ip,
&has_shared);
if (!xfs_scrub_xref_process_error(sc, XFS_INO_TO_AGNO(mp, ino),
XFS_INO_TO_AGBNO(mp, ino), &error))
return;
if (xfs_is_reflink_inode(sc->ip) && !has_shared)
xfs_scrub_ino_set_preen(sc, ino, bp);
else if (!xfs_is_reflink_inode(sc->ip) && has_shared)
xfs_scrub_ino_set_corrupt(sc, ino, bp);
}
/* Scrub an inode. */
int
xfs_scrub_inode(
struct xfs_scrub_context *sc)
{
struct xfs_dinode di;
struct xfs_buf *bp = NULL;
struct xfs_dinode *dip;
xfs_ino_t ino;
int error = 0;
/* Did we get the in-core inode, or are we doing this manually? */
if (sc->ip) {
ino = sc->ip->i_ino;
xfs_inode_to_disk(sc->ip, &di, 0);
dip = &di;
} else {
/* Map & read inode. */
ino = sc->sm->sm_ino;
error = xfs_scrub_inode_map_raw(sc, ino, &bp, &dip);
if (error || !bp)
goto out;
}
xfs_scrub_dinode(sc, bp, dip, ino);
if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
goto out;
/* Now let's do the things that require a live inode. */
if (!sc->ip)
goto out;
/*
* Look for discrepancies between file's data blocks and the reflink
* iflag. We already checked the iflag against the file mode when
* we scrubbed the dinode.
*/
if (S_ISREG(VFS_I(sc->ip)->i_mode))
xfs_scrub_inode_check_reflink_iflag(sc, ino, bp);
xfs_scrub_inode_xref(sc, ino, dip);
out:
if (bp)
xfs_trans_brelse(sc->tp, bp);
return error;
}
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