linux/fs/xfs/scrub/symlink.c
Eric Sandeen 250d4b4c40 xfs: remove unused header files
There are many, many xfs header files which are included but
unneeded (or included twice) in the xfs code, so remove them.

nb: xfs_linux.h includes about 9 headers for everyone, so those
explicit includes get removed by this.  I'm not sure what the
preference is, but if we wanted explicit includes everywhere,
a followup patch could remove those xfs_*.h includes from
xfs_linux.h and move them into the files that need them.
Or it could be left as-is.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-06-28 19:30:43 -07:00

71 lines
1.6 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_log_format.h"
#include "xfs_inode.h"
#include "xfs_symlink.h"
#include "scrub/scrub.h"
#include "scrub/common.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;
}