[mirror_ubuntu-jammy-kernel.git] / fs / xfs / scrub / inode.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2017 Oracle.  All Rights Reserved.
 * Author: Darrick J. Wong <darrick.wong@oracle.com>
 */
#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)
{
	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, 0);
	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, 0);
	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. */
STATIC void
xfs_scrub_inode_extsize(
	struct xfs_scrub_context	*sc,
	struct xfs_dinode		*dip,
	xfs_ino_t			ino,
	uint16_t			mode,
	uint16_t			flags)
{
	xfs_failaddr_t			fa;

	fa = xfs_inode_validate_extsize(sc->mp, be32_to_cpu(dip->di_extsize),
			mode, flags);
	if (fa)
		xfs_scrub_ino_set_corrupt(sc, ino);
}

/*
 * 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_dinode		*dip,
	xfs_ino_t			ino,
	uint16_t			mode,
	uint16_t			flags,
	uint64_t			flags2)
{
	xfs_failaddr_t			fa;

	fa = xfs_inode_validate_cowextsize(sc->mp,
			be32_to_cpu(dip->di_cowextsize), mode, flags,
			flags2);
	if (fa)
		xfs_scrub_ino_set_corrupt(sc, ino);
}

/* Make sure the di_flags make sense for the inode. */
STATIC void
xfs_scrub_inode_flags(
	struct xfs_scrub_context	*sc,
	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);
}

/* Make sure the di_flags2 make sense for the inode. */
STATIC void
xfs_scrub_inode_flags2(
	struct xfs_scrub_context	*sc,
	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);
}

/* Scrub all the ondisk inode fields. */
STATIC void
xfs_scrub_dinode(
	struct xfs_scrub_context	*sc,
	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);
		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);
		break;
	case 2:
	case 3:
		if (dip->di_onlink != 0)
			xfs_scrub_ino_set_corrupt(sc, ino);

		if (dip->di_mode == 0 && sc->ip)
			xfs_scrub_ino_set_corrupt(sc, ino);

		if (dip->di_projid_hi != 0 &&
		    !xfs_sb_version_hasprojid32bit(&mp->m_sb))
			xfs_scrub_ino_set_corrupt(sc, ino);
		break;
	default:
		xfs_scrub_ino_set_corrupt(sc, ino);
		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);

	/* 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);
		break;
	case XFS_DINODE_FMT_LOCAL:
		if (!S_ISDIR(mode) && !S_ISLNK(mode))
			xfs_scrub_ino_set_corrupt(sc, ino);
		break;
	case XFS_DINODE_FMT_EXTENTS:
		if (!S_ISREG(mode) && !S_ISDIR(mode) && !S_ISLNK(mode))
			xfs_scrub_ino_set_corrupt(sc, ino);
		break;
	case XFS_DINODE_FMT_BTREE:
		if (!S_ISREG(mode) && !S_ISDIR(mode))
			xfs_scrub_ino_set_corrupt(sc, ino);
		break;
	case XFS_DINODE_FMT_UUID:
	default:
		xfs_scrub_ino_set_corrupt(sc, ino);
		break;
	}

	/* di_[amc]time.nsec */
	if (be32_to_cpu(dip->di_atime.t_nsec) >= NSEC_PER_SEC)
		xfs_scrub_ino_set_corrupt(sc, ino);
	if (be32_to_cpu(dip->di_mtime.t_nsec) >= NSEC_PER_SEC)
		xfs_scrub_ino_set_corrupt(sc, ino);
	if (be32_to_cpu(dip->di_ctime.t_nsec) >= NSEC_PER_SEC)
		xfs_scrub_ino_set_corrupt(sc, ino);

	/*
	 * 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);

	/* 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);

	/* 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);

	/* 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);

	/*
	 * 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);

	/* 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);
	} else {
		if (be64_to_cpu(dip->di_nblocks) >= mp->m_sb.sb_dblocks)
			xfs_scrub_ino_set_corrupt(sc, ino);
	}

	xfs_scrub_inode_flags(sc, dip, ino, mode, flags);

	xfs_scrub_inode_extsize(sc, 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);
		break;
	case XFS_DINODE_FMT_BTREE:
		if (nextents <= fork_recs)
			xfs_scrub_ino_set_corrupt(sc, ino);
		break;
	default:
		if (nextents != 0)
			xfs_scrub_ino_set_corrupt(sc, ino);
		break;
	}

	/* di_forkoff */
	if (XFS_DFORK_APTR(dip) >= (char *)dip + mp->m_sb.sb_inodesize)
		xfs_scrub_ino_set_corrupt(sc, ino);
	if (dip->di_anextents != 0 && dip->di_forkoff == 0)
		xfs_scrub_ino_set_corrupt(sc, ino);
	if (dip->di_forkoff == 0 && dip->di_aformat != XFS_DINODE_FMT_EXTENTS)
		xfs_scrub_ino_set_corrupt(sc, ino);

	/* 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);

	/* 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);
		break;
	case XFS_DINODE_FMT_BTREE:
		if (nextents <= fork_recs)
			xfs_scrub_ino_set_corrupt(sc, ino);
		break;
	default:
		if (nextents != 0)
			xfs_scrub_ino_set_corrupt(sc, ino);
	}

	if (dip->di_version >= 3) {
		if (be32_to_cpu(dip->di_crtime.t_nsec) >= NSEC_PER_SEC)
			xfs_scrub_ino_set_corrupt(sc, ino);
		xfs_scrub_inode_flags2(sc, dip, ino, mode, flags, flags2);
		xfs_scrub_inode_cowextsize(sc, dip, ino, mode, flags,
				flags2);
	}
}

/*
 * 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 || xfs_scrub_skip_xref(sc->sm))
		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;

	if (xfs_scrub_skip_xref(sc->sm))
		return;

	/* 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);

	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);

	/* 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);
}

/* 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_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);
	else if (!xfs_is_reflink_inode(sc->ip) && has_shared)
		xfs_scrub_ino_set_corrupt(sc, ino);
}

/* Scrub an inode. */
int
xfs_scrub_inode(
	struct xfs_scrub_context	*sc)
{
	struct xfs_dinode		di;
	int				error = 0;

	/*
	 * If sc->ip is NULL, that means that the setup function called
	 * xfs_iget to look up the inode.  xfs_iget returned a EFSCORRUPTED
	 * and a NULL inode, so flag the corruption error and return.
	 */
	if (!sc->ip) {
		xfs_scrub_ino_set_corrupt(sc, sc->sm->sm_ino);
		return 0;
	}

	/* Scrub the inode core. */
	xfs_inode_to_disk(sc->ip, &di, 0);
	xfs_scrub_dinode(sc, &di, sc->ip->i_ino);
	if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
		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, sc->ip->i_ino);

	xfs_scrub_inode_xref(sc, sc->ip->i_ino, &di);
out:
	return error;
}
Commit	Line	Data
0b61f8a4	1	// SPDX-License-Identifier: GPL-2.0+
80e4e126 DW	2	/*
80e4e126 DW	3	* Copyright (C) 2017 Oracle. All Rights Reserved.
80e4e126	4	* Author: Darrick J. Wong <darrick.wong@oracle.com>
80e4e126 DW	5	*/
	6	#include "xfs.h"
	7	#include "xfs_fs.h"
	8	#include "xfs_shared.h"
	9	#include "xfs_format.h"
	10	#include "xfs_trans_resv.h"
	11	#include "xfs_mount.h"
	12	#include "xfs_defer.h"
	13	#include "xfs_btree.h"
	14	#include "xfs_bit.h"
	15	#include "xfs_log_format.h"
	16	#include "xfs_trans.h"
	17	#include "xfs_sb.h"
	18	#include "xfs_inode.h"
	19	#include "xfs_icache.h"
	20	#include "xfs_inode_buf.h"
	21	#include "xfs_inode_fork.h"
	22	#include "xfs_ialloc.h"
	23	#include "xfs_da_format.h"
	24	#include "xfs_reflink.h"
d852657c	25	#include "xfs_rmap.h"
561f648a DW	26	#include "xfs_bmap.h"
561f648a DW	27	#include "xfs_bmap_util.h"
80e4e126 DW	28	#include "scrub/xfs_scrub.h"
	29	#include "scrub/scrub.h"
	30	#include "scrub/common.h"
2e6f2756	31	#include "scrub/btree.h"
80e4e126 DW	32	#include "scrub/trace.h"
	33
	34	/*
	35	* Grab total control of the inode metadata. It doesn't matter here if
	36	* the file data is still changing; exclusive access to the metadata is
	37	* the goal.
	38	*/
	39	int
	40	xfs_scrub_setup_inode(
	41	struct xfs_scrub_context *sc,
	42	struct xfs_inode *ip)
	43	{
80e4e126 DW	44	int error;
	45
	46	/*
	47	* Try to get the inode. If the verifiers fail, we try again
	48	* in raw mode.
	49	*/
	50	error = xfs_scrub_get_inode(sc, ip);
	51	switch (error) {
	52	case 0:
	53	break;
	54	case -EFSCORRUPTED:
	55	case -EFSBADCRC:
0a9633fa	56	return xfs_scrub_trans_alloc(sc, 0);
80e4e126 DW	57	default:
	58	return error;
	59	}
	60
	61	/* Got the inode, lock it and we're ready to go. */
	62	sc->ilock_flags = XFS_IOLOCK_EXCL \| XFS_MMAPLOCK_EXCL;
	63	xfs_ilock(sc->ip, sc->ilock_flags);
0a9633fa	64	error = xfs_scrub_trans_alloc(sc, 0);
80e4e126 DW	65	if (error)
	66	goto out;
	67	sc->ilock_flags \|= XFS_ILOCK_EXCL;
	68	xfs_ilock(sc->ip, XFS_ILOCK_EXCL);
	69
	70	out:
	71	/* scrub teardown will unlock and release the inode for us */
	72	return error;
	73	}
	74
	75	/* Inode core */
	76
8bb82bc1	77	/* Validate di_extsize hint. */
80e4e126 DW	78	STATIC void
	79	xfs_scrub_inode_extsize(
	80	struct xfs_scrub_context *sc,
80e4e126 DW	81	struct xfs_dinode *dip,
	82	xfs_ino_t ino,
	83	uint16_t mode,
	84	uint16_t flags)
	85	{
8bb82bc1	86	xfs_failaddr_t fa;
80e4e126	87
8bb82bc1 DW	88	fa = xfs_inode_validate_extsize(sc->mp, be32_to_cpu(dip->di_extsize),
	89	mode, flags);
	90	if (fa)
	91	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	92	}
	93
	94	/*
	95	* Validate di_cowextsize hint.
	96	*
	97	* The rules are documented at xfs_ioctl_setattr_check_cowextsize().
	98	* These functions must be kept in sync with each other.
	99	*/
	100	STATIC void
	101	xfs_scrub_inode_cowextsize(
	102	struct xfs_scrub_context *sc,
80e4e126 DW	103	struct xfs_dinode *dip,
	104	xfs_ino_t ino,
	105	uint16_t mode,
	106	uint16_t flags,
	107	uint64_t flags2)
	108	{
8bb82bc1	109	xfs_failaddr_t fa;
80e4e126	110
8bb82bc1 DW	111	fa = xfs_inode_validate_cowextsize(sc->mp,
	112	be32_to_cpu(dip->di_cowextsize), mode, flags,
	113	flags2);
	114	if (fa)
	115	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	116	}
	117
	118	/* Make sure the di_flags make sense for the inode. */
	119	STATIC void
	120	xfs_scrub_inode_flags(
	121	struct xfs_scrub_context *sc,
80e4e126 DW	122	struct xfs_dinode *dip,
	123	xfs_ino_t ino,
	124	uint16_t mode,
	125	uint16_t flags)
	126	{
	127	struct xfs_mount *mp = sc->mp;
	128
	129	if (flags & ~XFS_DIFLAG_ANY)
	130	goto bad;
	131
	132	/* rt flags require rt device */
	133	if ((flags & (XFS_DIFLAG_REALTIME \| XFS_DIFLAG_RTINHERIT)) &&
	134	!mp->m_rtdev_targp)
	135	goto bad;
	136
	137	/* new rt bitmap flag only valid for rbmino */
	138	if ((flags & XFS_DIFLAG_NEWRTBM) && ino != mp->m_sb.sb_rbmino)
	139	goto bad;
	140
	141	/* directory-only flags */
	142	if ((flags & (XFS_DIFLAG_RTINHERIT \|
	143	XFS_DIFLAG_EXTSZINHERIT \|
	144	XFS_DIFLAG_PROJINHERIT \|
	145	XFS_DIFLAG_NOSYMLINKS)) &&
	146	!S_ISDIR(mode))
	147	goto bad;
	148
	149	/* file-only flags */
	150	if ((flags & (XFS_DIFLAG_REALTIME \| FS_XFLAG_EXTSIZE)) &&
	151	!S_ISREG(mode))
	152	goto bad;
	153
	154	/* filestreams and rt make no sense */
	155	if ((flags & XFS_DIFLAG_FILESTREAM) && (flags & XFS_DIFLAG_REALTIME))
	156	goto bad;
	157
	158	return;
	159	bad:
7e56d9ea	160	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	161	}
	162
	163	/* Make sure the di_flags2 make sense for the inode. */
	164	STATIC void
	165	xfs_scrub_inode_flags2(
	166	struct xfs_scrub_context *sc,
80e4e126 DW	167	struct xfs_dinode *dip,
	168	xfs_ino_t ino,
	169	uint16_t mode,
	170	uint16_t flags,
	171	uint64_t flags2)
	172	{
	173	struct xfs_mount *mp = sc->mp;
	174
	175	if (flags2 & ~XFS_DIFLAG2_ANY)
	176	goto bad;
	177
	178	/* reflink flag requires reflink feature */
	179	if ((flags2 & XFS_DIFLAG2_REFLINK) &&
	180	!xfs_sb_version_hasreflink(&mp->m_sb))
	181	goto bad;
	182
	183	/* cowextsize flag is checked w.r.t. mode separately */
	184
	185	/* file/dir-only flags */
	186	if ((flags2 & XFS_DIFLAG2_DAX) && !(S_ISREG(mode) \|\| S_ISDIR(mode)))
	187	goto bad;
	188
	189	/* file-only flags */
	190	if ((flags2 & XFS_DIFLAG2_REFLINK) && !S_ISREG(mode))
	191	goto bad;
	192
	193	/* realtime and reflink make no sense, currently */
	194	if ((flags & XFS_DIFLAG_REALTIME) && (flags2 & XFS_DIFLAG2_REFLINK))
	195	goto bad;
	196
	197	/* dax and reflink make no sense, currently */
	198	if ((flags2 & XFS_DIFLAG2_DAX) && (flags2 & XFS_DIFLAG2_REFLINK))
	199	goto bad;
	200
	201	return;
	202	bad:
7e56d9ea	203	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	204	}
	205
	206	/* Scrub all the ondisk inode fields. */
	207	STATIC void
	208	xfs_scrub_dinode(
	209	struct xfs_scrub_context *sc,
80e4e126 DW	210	struct xfs_dinode *dip,
	211	xfs_ino_t ino)
	212	{
	213	struct xfs_mount *mp = sc->mp;
	214	size_t fork_recs;
	215	unsigned long long isize;
	216	uint64_t flags2;
	217	uint32_t nextents;
	218	uint16_t flags;
	219	uint16_t mode;
	220
	221	flags = be16_to_cpu(dip->di_flags);
	222	if (dip->di_version >= 3)
	223	flags2 = be64_to_cpu(dip->di_flags2);
	224	else
	225	flags2 = 0;
	226
	227	/* di_mode */
	228	mode = be16_to_cpu(dip->di_mode);
3b42d385 DW	229	switch (mode & S_IFMT) {
	230	case S_IFLNK:
	231	case S_IFREG:
	232	case S_IFDIR:
	233	case S_IFCHR:
	234	case S_IFBLK:
	235	case S_IFIFO:
	236	case S_IFSOCK:
	237	/* mode is recognized */
	238	break;
	239	default:
7e56d9ea	240	xfs_scrub_ino_set_corrupt(sc, ino);
3b42d385 DW	241	break;
3b42d385 DW	242	}
80e4e126 DW	243
	244	/* v1/v2 fields */
	245	switch (dip->di_version) {
	246	case 1:
	247	/*
	248	* We autoconvert v1 inodes into v2 inodes on writeout,
	249	* so just mark this inode for preening.
	250	*/
7e56d9ea	251	xfs_scrub_ino_set_preen(sc, ino);
80e4e126 DW	252	break;
	253	case 2:
	254	case 3:
	255	if (dip->di_onlink != 0)
7e56d9ea	256	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	257
80e4e126 DW	258	if (dip->di_mode == 0 && sc->ip)
7e56d9ea	259	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	260
	261	if (dip->di_projid_hi != 0 &&
	262	!xfs_sb_version_hasprojid32bit(&mp->m_sb))
7e56d9ea	263	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	264	break;
80e4e126 DW	265	default:
7e56d9ea	266	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	267	return;
	268	}
	269
	270	/*
	271	* di_uid/di_gid -- -1 isn't invalid, but there's no way that
	272	* userspace could have created that.
	273	*/
	274	if (dip->di_uid == cpu_to_be32(-1U) \|\|
	275	dip->di_gid == cpu_to_be32(-1U))
7e56d9ea	276	xfs_scrub_ino_set_warning(sc, ino);
80e4e126 DW	277
	278	/* di_format */
	279	switch (dip->di_format) {
	280	case XFS_DINODE_FMT_DEV:
	281	if (!S_ISCHR(mode) && !S_ISBLK(mode) &&
	282	!S_ISFIFO(mode) && !S_ISSOCK(mode))
7e56d9ea	283	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	284	break;
	285	case XFS_DINODE_FMT_LOCAL:
	286	if (!S_ISDIR(mode) && !S_ISLNK(mode))
7e56d9ea	287	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	288	break;
	289	case XFS_DINODE_FMT_EXTENTS:
	290	if (!S_ISREG(mode) && !S_ISDIR(mode) && !S_ISLNK(mode))
7e56d9ea	291	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	292	break;
	293	case XFS_DINODE_FMT_BTREE:
	294	if (!S_ISREG(mode) && !S_ISDIR(mode))
7e56d9ea	295	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	296	break;
	297	case XFS_DINODE_FMT_UUID:
	298	default:
7e56d9ea	299	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	300	break;
	301	}
	302
29c1c123 DW	303	/* di_[amc]time.nsec */
29c1c123 DW	304	if (be32_to_cpu(dip->di_atime.t_nsec) >= NSEC_PER_SEC)
7e56d9ea	305	xfs_scrub_ino_set_corrupt(sc, ino);
29c1c123	306	if (be32_to_cpu(dip->di_mtime.t_nsec) >= NSEC_PER_SEC)
7e56d9ea	307	xfs_scrub_ino_set_corrupt(sc, ino);
29c1c123	308	if (be32_to_cpu(dip->di_ctime.t_nsec) >= NSEC_PER_SEC)
7e56d9ea	309	xfs_scrub_ino_set_corrupt(sc, ino);
29c1c123	310
80e4e126 DW	311	/*
	312	* di_size. xfs_dinode_verify checks for things that screw up
	313	* the VFS such as the upper bit being set and zero-length
	314	* symlinks/directories, but we can do more here.
	315	*/
	316	isize = be64_to_cpu(dip->di_size);
	317	if (isize & (1ULL << 63))
7e56d9ea	318	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	319
	320	/* Devices, fifos, and sockets must have zero size */
	321	if (!S_ISDIR(mode) && !S_ISREG(mode) && !S_ISLNK(mode) && isize != 0)
7e56d9ea	322	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	323
	324	/* Directories can't be larger than the data section size (32G) */
	325	if (S_ISDIR(mode) && (isize == 0 \|\| isize >= XFS_DIR2_SPACE_SIZE))
7e56d9ea	326	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	327
	328	/* Symlinks can't be larger than SYMLINK_MAXLEN */
	329	if (S_ISLNK(mode) && (isize == 0 \|\| isize >= XFS_SYMLINK_MAXLEN))
7e56d9ea	330	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	331
	332	/*
	333	* Warn if the running kernel can't handle the kinds of offsets
	334	* needed to deal with the file size. In other words, if the
	335	* pagecache can't cache all the blocks in this file due to
	336	* overly large offsets, flag the inode for admin review.
	337	*/
	338	if (isize >= mp->m_super->s_maxbytes)
7e56d9ea	339	xfs_scrub_ino_set_warning(sc, ino);
80e4e126 DW	340
	341	/* di_nblocks */
	342	if (flags2 & XFS_DIFLAG2_REFLINK) {
	343	; /* nblocks can exceed dblocks */
	344	} else if (flags & XFS_DIFLAG_REALTIME) {
	345	/*
	346	* nblocks is the sum of data extents (in the rtdev),
	347	* attr extents (in the datadev), and both forks' bmbt
	348	* blocks (in the datadev). This clumsy check is the
	349	* best we can do without cross-referencing with the
	350	* inode forks.
	351	*/
	352	if (be64_to_cpu(dip->di_nblocks) >=
	353	mp->m_sb.sb_dblocks + mp->m_sb.sb_rblocks)
7e56d9ea	354	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	355	} else {
80e4e126 DW	356	if (be64_to_cpu(dip->di_nblocks) >= mp->m_sb.sb_dblocks)
7e56d9ea	357	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	358	}
80e4e126 DW	359
7e56d9ea	360	xfs_scrub_inode_flags(sc, dip, ino, mode, flags);
80e4e126	361
7e56d9ea	362	xfs_scrub_inode_extsize(sc, dip, ino, mode, flags);
80e4e126 DW	363
	364	/* di_nextents */
	365	nextents = be32_to_cpu(dip->di_nextents);
	366	fork_recs = XFS_DFORK_DSIZE(dip, mp) / sizeof(struct xfs_bmbt_rec);
	367	switch (dip->di_format) {
	368	case XFS_DINODE_FMT_EXTENTS:
	369	if (nextents > fork_recs)
7e56d9ea	370	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	371	break;
	372	case XFS_DINODE_FMT_BTREE:
	373	if (nextents <= fork_recs)
7e56d9ea	374	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	375	break;
	376	default:
	377	if (nextents != 0)
7e56d9ea	378	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	379	break;
	380	}
	381
	382	/* di_forkoff */
	383	if (XFS_DFORK_APTR(dip) >= (char *)dip + mp->m_sb.sb_inodesize)
7e56d9ea	384	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126	385	if (dip->di_anextents != 0 && dip->di_forkoff == 0)
7e56d9ea	386	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126	387	if (dip->di_forkoff == 0 && dip->di_aformat != XFS_DINODE_FMT_EXTENTS)
7e56d9ea	388	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	389
	390	/* di_aformat */
	391	if (dip->di_aformat != XFS_DINODE_FMT_LOCAL &&
	392	dip->di_aformat != XFS_DINODE_FMT_EXTENTS &&
	393	dip->di_aformat != XFS_DINODE_FMT_BTREE)
7e56d9ea	394	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	395
	396	/* di_anextents */
	397	nextents = be16_to_cpu(dip->di_anextents);
	398	fork_recs = XFS_DFORK_ASIZE(dip, mp) / sizeof(struct xfs_bmbt_rec);
	399	switch (dip->di_aformat) {
	400	case XFS_DINODE_FMT_EXTENTS:
	401	if (nextents > fork_recs)
7e56d9ea	402	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	403	break;
	404	case XFS_DINODE_FMT_BTREE:
	405	if (nextents <= fork_recs)
7e56d9ea	406	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	407	break;
	408	default:
	409	if (nextents != 0)
7e56d9ea	410	xfs_scrub_ino_set_corrupt(sc, ino);
80e4e126 DW	411	}
	412
	413	if (dip->di_version >= 3) {
29c1c123	414	if (be32_to_cpu(dip->di_crtime.t_nsec) >= NSEC_PER_SEC)
7e56d9ea DW	415	xfs_scrub_ino_set_corrupt(sc, ino);
	416	xfs_scrub_inode_flags2(sc, dip, ino, mode, flags, flags2);
	417	xfs_scrub_inode_cowextsize(sc, dip, ino, mode, flags,
80e4e126 DW	418	flags2);
	419	}
	420	}
	421
2e6f2756 DW	422	/*
	423	* Make sure the finobt doesn't think this inode is free.
	424	* We don't have to check the inobt ourselves because we got the inode via
	425	* IGET_UNTRUSTED, which checks the inobt for us.
	426	*/
	427	static void
	428	xfs_scrub_inode_xref_finobt(
	429	struct xfs_scrub_context *sc,
	430	xfs_ino_t ino)
	431	{
	432	struct xfs_inobt_rec_incore rec;
	433	xfs_agino_t agino;
	434	int has_record;
	435	int error;
	436
8389f3ff	437	if (!sc->sa.fino_cur \|\| xfs_scrub_skip_xref(sc->sm))
2e6f2756 DW	438	return;
	439
	440	agino = XFS_INO_TO_AGINO(sc->mp, ino);
	441
	442	/*
	443	* Try to get the finobt record. If we can't get it, then we're
	444	* in good shape.
	445	*/
	446	error = xfs_inobt_lookup(sc->sa.fino_cur, agino, XFS_LOOKUP_LE,
	447	&has_record);
	448	if (!xfs_scrub_should_check_xref(sc, &error, &sc->sa.fino_cur) \|\|
	449	!has_record)
	450	return;
	451
	452	error = xfs_inobt_get_rec(sc->sa.fino_cur, &rec, &has_record);
	453	if (!xfs_scrub_should_check_xref(sc, &error, &sc->sa.fino_cur) \|\|
	454	!has_record)
	455	return;
	456
	457	/*
	458	* Otherwise, make sure this record either doesn't cover this inode,
	459	* or that it does but it's marked present.
	460	*/
	461	if (rec.ir_startino > agino \|\|
	462	rec.ir_startino + XFS_INODES_PER_CHUNK <= agino)
	463	return;
	464
	465	if (rec.ir_free & XFS_INOBT_MASK(agino - rec.ir_startino))
	466	xfs_scrub_btree_xref_set_corrupt(sc, sc->sa.fino_cur, 0);
	467	}
	468
561f648a DW	469	/* Cross reference the inode fields with the forks. */
	470	STATIC void
	471	xfs_scrub_inode_xref_bmap(
	472	struct xfs_scrub_context *sc,
	473	struct xfs_dinode *dip)
	474	{
	475	xfs_extnum_t nextents;
	476	xfs_filblks_t count;
	477	xfs_filblks_t acount;
	478	int error;
	479
8389f3ff DW	480	if (xfs_scrub_skip_xref(sc->sm))
	481	return;
	482
561f648a DW	483	/* Walk all the extents to check nextents/naextents/nblocks. */
	484	error = xfs_bmap_count_blocks(sc->tp, sc->ip, XFS_DATA_FORK,
	485	&nextents, &count);
	486	if (!xfs_scrub_should_check_xref(sc, &error, NULL))
	487	return;
	488	if (nextents < be32_to_cpu(dip->di_nextents))
7e56d9ea	489	xfs_scrub_ino_xref_set_corrupt(sc, sc->ip->i_ino);
561f648a DW	490
	491	error = xfs_bmap_count_blocks(sc->tp, sc->ip, XFS_ATTR_FORK,
	492	&nextents, &acount);
	493	if (!xfs_scrub_should_check_xref(sc, &error, NULL))
	494	return;
	495	if (nextents != be16_to_cpu(dip->di_anextents))
7e56d9ea	496	xfs_scrub_ino_xref_set_corrupt(sc, sc->ip->i_ino);
561f648a DW	497
	498	/* Check nblocks against the inode. */
	499	if (count + acount != be64_to_cpu(dip->di_nblocks))
7e56d9ea	500	xfs_scrub_ino_xref_set_corrupt(sc, sc->ip->i_ino);
561f648a DW	501	}
561f648a DW	502
166d7641 DW	503	/* Cross-reference with the other btrees. */
	504	STATIC void
	505	xfs_scrub_inode_xref(
	506	struct xfs_scrub_context *sc,
	507	xfs_ino_t ino,
	508	struct xfs_dinode *dip)
	509	{
d852657c	510	struct xfs_owner_info oinfo;
52dc4b44 DW	511	xfs_agnumber_t agno;
	512	xfs_agblock_t agbno;
	513	int error;
	514
166d7641 DW	515	if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
166d7641 DW	516	return;
52dc4b44 DW	517
	518	agno = XFS_INO_TO_AGNO(sc->mp, ino);
	519	agbno = XFS_INO_TO_AGBNO(sc->mp, ino);
	520
	521	error = xfs_scrub_ag_init(sc, agno, &sc->sa);
	522	if (!xfs_scrub_xref_process_error(sc, agno, agbno, &error))
	523	return;
	524
	525	xfs_scrub_xref_is_used_space(sc, agbno, 1);
2e6f2756	526	xfs_scrub_inode_xref_finobt(sc, ino);
d852657c DW	527	xfs_rmap_ag_owner(&oinfo, XFS_RMAP_OWN_INODES);
d852657c DW	528	xfs_scrub_xref_is_owned_by(sc, agbno, 1, &oinfo);
f6d5fc21	529	xfs_scrub_xref_is_not_shared(sc, agbno, 1);
561f648a	530	xfs_scrub_inode_xref_bmap(sc, dip);
52dc4b44 DW	531
52dc4b44 DW	532	xfs_scrub_ag_free(sc, &sc->sa);
166d7641 DW	533	}
166d7641 DW	534
f6d5fc21 DW	535	/*
	536	* If the reflink iflag disagrees with a scan for shared data fork extents,
	537	* either flag an error (shared extents w/ no flag) or a preen (flag set w/o
	538	* any shared extents). We already checked for reflink iflag set on a non
	539	* reflink filesystem.
	540	*/
	541	static void
	542	xfs_scrub_inode_check_reflink_iflag(
	543	struct xfs_scrub_context *sc,
7e56d9ea	544	xfs_ino_t ino)
f6d5fc21 DW	545	{
	546	struct xfs_mount *mp = sc->mp;
	547	bool has_shared;
	548	int error;
	549
	550	if (!xfs_sb_version_hasreflink(&mp->m_sb))
	551	return;
	552
	553	error = xfs_reflink_inode_has_shared_extents(sc->tp, sc->ip,
	554	&has_shared);
	555	if (!xfs_scrub_xref_process_error(sc, XFS_INO_TO_AGNO(mp, ino),
	556	XFS_INO_TO_AGBNO(mp, ino), &error))
	557	return;
	558	if (xfs_is_reflink_inode(sc->ip) && !has_shared)
7e56d9ea	559	xfs_scrub_ino_set_preen(sc, ino);
f6d5fc21	560	else if (!xfs_is_reflink_inode(sc->ip) && has_shared)
7e56d9ea	561	xfs_scrub_ino_set_corrupt(sc, ino);
f6d5fc21 DW	562	}
f6d5fc21 DW	563
80e4e126 DW	564	/* Scrub an inode. */
	565	int
	566	xfs_scrub_inode(
	567	struct xfs_scrub_context *sc)
	568	{
	569	struct xfs_dinode di;
80e4e126 DW	570	int error = 0;
80e4e126 DW	571
d0018ad8 DW	572	/*
	573	* If sc->ip is NULL, that means that the setup function called
	574	* xfs_iget to look up the inode. xfs_iget returned a EFSCORRUPTED
	575	* and a NULL inode, so flag the corruption error and return.
	576	*/
	577	if (!sc->ip) {
7e56d9ea	578	xfs_scrub_ino_set_corrupt(sc, sc->sm->sm_ino);
d0018ad8	579	return 0;
80e4e126 DW	580	}
80e4e126 DW	581
d0018ad8 DW	582	/* Scrub the inode core. */
d0018ad8 DW	583	xfs_inode_to_disk(sc->ip, &di, 0);
7e56d9ea	584	xfs_scrub_dinode(sc, &di, sc->ip->i_ino);
80e4e126 DW	585	if (sc->sm->sm_flags & XFS_SCRUB_OFLAG_CORRUPT)
	586	goto out;
	587
80e4e126	588	/*
f6d5fc21 DW	589	* Look for discrepancies between file's data blocks and the reflink
	590	* iflag. We already checked the iflag against the file mode when
	591	* we scrubbed the dinode.
80e4e126	592	*/
f6d5fc21	593	if (S_ISREG(VFS_I(sc->ip)->i_mode))
7e56d9ea	594	xfs_scrub_inode_check_reflink_iflag(sc, sc->ip->i_ino);
80e4e126	595
d0018ad8	596	xfs_scrub_inode_xref(sc, sc->ip->i_ino, &di);
80e4e126	597	out:
80e4e126 DW	598	return error;
80e4e126 DW	599	}