mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-11 12:28:41 +08:00
032d91f982
Now that we've shortened everything, fix up all the indentation and whitespace problems. There are no functional changes. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
79 lines
1.8 KiB
C
79 lines
1.8 KiB
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_inode_fork.h"
|
|
#include "xfs_symlink.h"
|
|
#include "scrub/xfs_scrub.h"
|
|
#include "scrub/scrub.h"
|
|
#include "scrub/common.h"
|
|
#include "scrub/trace.h"
|
|
|
|
/* Set us up to scrub a symbolic link. */
|
|
int
|
|
xchk_setup_symlink(
|
|
struct xfs_scrub *sc,
|
|
struct xfs_inode *ip)
|
|
{
|
|
/* Allocate the buffer without the inode lock held. */
|
|
sc->buf = kmem_zalloc_large(XFS_SYMLINK_MAXLEN + 1, KM_SLEEP);
|
|
if (!sc->buf)
|
|
return -ENOMEM;
|
|
|
|
return xchk_setup_inode_contents(sc, ip, 0);
|
|
}
|
|
|
|
/* Symbolic links. */
|
|
|
|
int
|
|
xchk_symlink(
|
|
struct xfs_scrub *sc)
|
|
{
|
|
struct xfs_inode *ip = sc->ip;
|
|
struct xfs_ifork *ifp;
|
|
loff_t len;
|
|
int error = 0;
|
|
|
|
if (!S_ISLNK(VFS_I(ip)->i_mode))
|
|
return -ENOENT;
|
|
ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK);
|
|
len = ip->i_d.di_size;
|
|
|
|
/* Plausible size? */
|
|
if (len > XFS_SYMLINK_MAXLEN || len <= 0) {
|
|
xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, 0);
|
|
goto out;
|
|
}
|
|
|
|
/* Inline symlink? */
|
|
if (ifp->if_flags & XFS_IFINLINE) {
|
|
if (len > XFS_IFORK_DSIZE(ip) ||
|
|
len > strnlen(ifp->if_u1.if_data, XFS_IFORK_DSIZE(ip)))
|
|
xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, 0);
|
|
goto out;
|
|
}
|
|
|
|
/* Remote symlink; must read the contents. */
|
|
error = xfs_readlink_bmap_ilocked(sc->ip, sc->buf);
|
|
if (!xchk_fblock_process_error(sc, XFS_DATA_FORK, 0, &error))
|
|
goto out;
|
|
if (strnlen(sc->buf, XFS_SYMLINK_MAXLEN) < len)
|
|
xchk_fblock_set_corrupt(sc, XFS_DATA_FORK, 0);
|
|
out:
|
|
return error;
|
|
}
|