Google Git
Sign in
kernel / pub / scm / fs / xfs / xfsprogs-dev / refs/tags/v4.17.0 / . / repair / dinode.c
blob: 49d5d058ac4794a9b66ceb31cb61da108e6eb5fd [file] [log] [blame]
/*
* Copyright (c) 2000-2005 Silicon Graphics, Inc.
* All Rights Reserved.
*
* 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.
*
* 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 "libxfs.h"
#include "avl.h"
#include "globals.h"
#include "agheader.h"
#include "incore.h"
#include "protos.h"
#include "err_protos.h"
#include "dir2.h"
#include "dinode.h"
#include "scan.h"
#include "versions.h"
#include "attr_repair.h"
#include "bmap.h"
#include "threads.h"
#include "slab.h"
#include "rmap.h"
/*
* gettext lookups for translations of strings use mutexes internally to
* the library. Hence when we come through here doing parallel scans in
* multiple AGs, then all do concurrent text conversions and serialise
* on the translation string lookups. Let's avoid doing repeated lookups
* by making them static variables and only assigning the translation
* once.
*/
static char *forkname_data;
static char *forkname_attr;
static char *ftype_real_time;
static char *ftype_regular;
void
dinode_bmbt_translation_init(void)
{
forkname_data = _("data");
forkname_attr = _("attr");
ftype_real_time = _("real-time");
ftype_regular = _("regular");
}
char *
get_forkname(int whichfork)
{
if (whichfork == XFS_DATA_FORK)
return forkname_data;
return forkname_attr;
}
/*
* inode clearing routines
*/
static int
clear_dinode_attr(xfs_mount_t *mp, xfs_dinode_t *dino, xfs_ino_t ino_num)
{
ASSERT(dino->di_forkoff != 0);
if (!no_modify)
fprintf(stderr,
_("clearing inode %" PRIu64 " attributes\n"), ino_num);
else
fprintf(stderr,
_("would have cleared inode %" PRIu64 " attributes\n"), ino_num);
if (be16_to_cpu(dino->di_anextents) != 0) {
if (no_modify)
return(1);
dino->di_anextents = cpu_to_be16(0);
}
if (dino->di_aformat != XFS_DINODE_FMT_EXTENTS) {
if (no_modify)
return(1);
dino->di_aformat = XFS_DINODE_FMT_EXTENTS;
}
/* get rid of the fork by clearing forkoff */
/* Originally, when the attr repair code was added, the fork was cleared
* by turning it into shortform status. This meant clearing the
* hdr.totsize/count fields and also changing aformat to LOCAL
* (vs EXTENTS). Over various fixes, the aformat and forkoff have
* been updated to not show an attribute fork at all, however.
* It could be possible that resetting totsize/count are not needed,
* but just to be safe, leave it in for now.
*/
if (!no_modify) {
xfs_attr_shortform_t *asf = (xfs_attr_shortform_t *)
XFS_DFORK_APTR(dino);
asf->hdr.totsize = cpu_to_be16(sizeof(xfs_attr_sf_hdr_t));
asf->hdr.count = 0;
dino->di_forkoff = 0; /* got to do this after asf is set */
}
/*
* always returns 1 since the fork gets zapped
*/
return(1);
}
static int
clear_dinode_core(struct xfs_mount *mp, xfs_dinode_t *dinoc, xfs_ino_t ino_num)
{
int dirty = 0;
int i;
#define __dirty_no_modify_ret(dirty) \
({ (dirty) = 1; if (no_modify) return 1; })
if (be16_to_cpu(dinoc->di_magic) != XFS_DINODE_MAGIC) {
__dirty_no_modify_ret(dirty);
dinoc->di_magic = cpu_to_be16(XFS_DINODE_MAGIC);
}
if (!libxfs_dinode_good_version(mp, dinoc->di_version)) {
__dirty_no_modify_ret(dirty);
if (xfs_sb_version_hascrc(&mp->m_sb))
dinoc->di_version = 3;
else
dinoc->di_version = 2;
}
if (be16_to_cpu(dinoc->di_mode) != 0) {
__dirty_no_modify_ret(dirty);
dinoc->di_mode = 0;
}
if (be16_to_cpu(dinoc->di_flags) != 0) {
__dirty_no_modify_ret(dirty);
dinoc->di_flags = 0;
}
if (be32_to_cpu(dinoc->di_dmevmask) != 0) {
__dirty_no_modify_ret(dirty);
dinoc->di_dmevmask = 0;
}
if (dinoc->di_forkoff != 0) {
__dirty_no_modify_ret(dirty);
dinoc->di_forkoff = 0;
}
if (dinoc->di_format != XFS_DINODE_FMT_EXTENTS) {
__dirty_no_modify_ret(dirty);
dinoc->di_format = XFS_DINODE_FMT_EXTENTS;
}
if (dinoc->di_aformat != XFS_DINODE_FMT_EXTENTS) {
__dirty_no_modify_ret(dirty);
dinoc->di_aformat = XFS_DINODE_FMT_EXTENTS;
}
if (be64_to_cpu(dinoc->di_size) != 0) {
__dirty_no_modify_ret(dirty);
dinoc->di_size = 0;
}
if (be64_to_cpu(dinoc->di_nblocks) != 0) {
__dirty_no_modify_ret(dirty);
dinoc->di_nblocks = 0;
}
if (be16_to_cpu(dinoc->di_onlink) != 0) {
__dirty_no_modify_ret(dirty);
dinoc->di_onlink = 0;
}
if (be32_to_cpu(dinoc->di_nextents) != 0) {
__dirty_no_modify_ret(dirty);
dinoc->di_nextents = 0;
}
if (be16_to_cpu(dinoc->di_anextents) != 0) {
__dirty_no_modify_ret(dirty);
dinoc->di_anextents = 0;
}
if (dinoc->di_version > 1 &&
be32_to_cpu(dinoc->di_nlink) != 0) {
__dirty_no_modify_ret(dirty);
dinoc->di_nlink = 0;
}
/* we are done for version 1/2 inodes */
if (dinoc->di_version < 3)
return dirty;
if (be64_to_cpu(dinoc->di_ino) != ino_num) {
__dirty_no_modify_ret(dirty);
dinoc->di_ino = cpu_to_be64(ino_num);
}
if (platform_uuid_compare(&dinoc->di_uuid, &mp->m_sb.sb_meta_uuid)) {
__dirty_no_modify_ret(dirty);
platform_uuid_copy(&dinoc->di_uuid, &mp->m_sb.sb_meta_uuid);
}
for (i = 0; i < sizeof(dinoc->di_pad2)/sizeof(dinoc->di_pad2[0]); i++) {
if (dinoc->di_pad2[i] != 0) {
__dirty_no_modify_ret(dirty);
memset(dinoc->di_pad2, 0, sizeof(dinoc->di_pad2));
break;
}
}
if (be64_to_cpu(dinoc->di_flags2) != 0) {
__dirty_no_modify_ret(dirty);
dinoc->di_flags2 = 0;
}
if (be64_to_cpu(dinoc->di_lsn) != 0) {
__dirty_no_modify_ret(dirty);
dinoc->di_lsn = 0;
}
if (be64_to_cpu(dinoc->di_changecount) != 0) {
__dirty_no_modify_ret(dirty);
dinoc->di_changecount = 0;
}
return dirty;
}
static int
clear_dinode_unlinked(xfs_mount_t *mp, xfs_dinode_t *dino)
{
if (be32_to_cpu(dino->di_next_unlinked) != NULLAGINO) {
if (!no_modify)
dino->di_next_unlinked = cpu_to_be32(NULLAGINO);
return(1);
}
return(0);
}
/*
* this clears the unlinked list too so it should not be called
* until after the agi unlinked lists are walked in phase 3.
* returns > zero if the inode has been altered while being cleared
*/
static int
clear_dinode(xfs_mount_t *mp, xfs_dinode_t *dino, xfs_ino_t ino_num)
{
int dirty;
dirty = clear_dinode_core(mp, dino, ino_num);
dirty += clear_dinode_unlinked(mp, dino);
/* and clear the forks */
if (dirty && !no_modify)
memset(XFS_DFORK_DPTR(dino), 0,
XFS_LITINO(mp, dino->di_version));
return(dirty);
}
/*
* misc. inode-related utility routines
*/
/*
* verify_ag_bno is heavily used. In the common case, it
* performs just two number of compares
* Returns 1 for bad ag/bno pair or 0 if it's valid.
*/
static __inline int
verify_ag_bno(xfs_sb_t *sbp,
xfs_agnumber_t agno,
xfs_agblock_t agbno)
{
if (agno < (sbp->sb_agcount - 1))
return (agbno >= sbp->sb_agblocks);
if (agno == (sbp->sb_agcount - 1))
return (agbno >= (sbp->sb_dblocks -
((xfs_rfsblock_t)(sbp->sb_agcount - 1) *
sbp->sb_agblocks)));
return 1;
}
/*
* returns 0 if inode number is valid, 1 if bogus
*/
int
verify_inum(xfs_mount_t *mp,
xfs_ino_t ino)
{
xfs_agnumber_t agno;
xfs_agino_t agino;
xfs_agblock_t agbno;
xfs_sb_t *sbp = &mp->m_sb;;
/* range check ag #, ag block. range-checking offset is pointless */
agno = XFS_INO_TO_AGNO(mp, ino);
agino = XFS_INO_TO_AGINO(mp, ino);
agbno = XFS_AGINO_TO_AGBNO(mp, agino);
if (agbno == 0)
return 1;
if (ino == 0 || ino == NULLFSINO)
return(1);
if (ino != XFS_AGINO_TO_INO(mp, agno, agino))
return(1);
return verify_ag_bno(sbp, agno, agbno);
}
/*
* have a separate routine to ensure that we don't accidentally
* lose illegally set bits in the agino by turning it into an FSINO
* to feed to the above routine
*/
int
verify_aginum(xfs_mount_t *mp,
xfs_agnumber_t agno,
xfs_agino_t agino)
{
xfs_agblock_t agbno;
xfs_sb_t *sbp = &mp->m_sb;;
/* range check ag #, ag block. range-checking offset is pointless */
if (agino == 0 || agino == NULLAGINO)
return(1);
/*
* agino's can't be too close to NULLAGINO because the min blocksize
* is 9 bits and at most 1 bit of that gets used for the inode offset
* so if the agino gets shifted by the # of offset bits and compared
* to the legal agbno values, a bogus agino will be too large. there
* will be extra bits set at the top that shouldn't be set.
*/
agbno = XFS_AGINO_TO_AGBNO(mp, agino);
if (agbno == 0)
return 1;
return verify_ag_bno(sbp, agno, agbno);
}
/*
* return 1 if block number is good, 0 if out of range
*/
int
verify_dfsbno(xfs_mount_t *mp,
xfs_fsblock_t fsbno)
{
xfs_agnumber_t agno;
xfs_agblock_t agbno;
xfs_sb_t *sbp = &mp->m_sb;;
/* range check ag #, ag block. range-checking offset is pointless */
agno = XFS_FSB_TO_AGNO(mp, fsbno);
agbno = XFS_FSB_TO_AGBNO(mp, fsbno);
return verify_ag_bno(sbp, agno, agbno) == 0;
}
#define XR_DFSBNORANGE_VALID 0
#define XR_DFSBNORANGE_BADSTART 1
#define XR_DFSBNORANGE_BADEND 2
#define XR_DFSBNORANGE_OVERFLOW 3
static __inline int
verify_dfsbno_range(xfs_mount_t *mp,
xfs_fsblock_t fsbno,
xfs_filblks_t count)
{
xfs_agnumber_t agno;
xfs_agblock_t agbno;
xfs_sb_t *sbp = &mp->m_sb;;
/* the start and end blocks better be in the same allocation group */
agno = XFS_FSB_TO_AGNO(mp, fsbno);
if (agno != XFS_FSB_TO_AGNO(mp, fsbno + count - 1)) {
return XR_DFSBNORANGE_OVERFLOW;
}
agbno = XFS_FSB_TO_AGBNO(mp, fsbno);
if (verify_ag_bno(sbp, agno, agbno)) {
return XR_DFSBNORANGE_BADSTART;
}
agbno = XFS_FSB_TO_AGBNO(mp, fsbno + count - 1);
if (verify_ag_bno(sbp, agno, agbno)) {
return XR_DFSBNORANGE_BADEND;
}
return (XR_DFSBNORANGE_VALID);
}
int
verify_agbno(xfs_mount_t *mp,
xfs_agnumber_t agno,
xfs_agblock_t agbno)
{
xfs_sb_t *sbp = &mp->m_sb;;
/* range check ag #, ag block. range-checking offset is pointless */
return verify_ag_bno(sbp, agno, agbno) == 0;
}
static int
process_rt_rec(
xfs_mount_t *mp,
xfs_bmbt_irec_t *irec,
xfs_ino_t ino,
xfs_rfsblock_t *tot,
int check_dups)
{
xfs_fsblock_t b;
xfs_rtblock_t ext;
int state;
int pwe; /* partially-written extent */
/*
* check numeric validity of the extent
*/
if (irec->br_startblock >= mp->m_sb.sb_rblocks) {
do_warn(
_("inode %" PRIu64 " - bad rt extent start block number %" PRIu64 ", offset %" PRIu64 "\n"),
ino,
irec->br_startblock,
irec->br_startoff);
return 1;
}
if (irec->br_startblock + irec->br_blockcount - 1 >= mp->m_sb.sb_rblocks) {
do_warn(
_("inode %" PRIu64 " - bad rt extent last block number %" PRIu64 ", offset %" PRIu64 "\n"),
ino,
irec->br_startblock + irec->br_blockcount - 1,
irec->br_startoff);
return 1;
}
if (irec->br_startblock + irec->br_blockcount - 1 < irec->br_startblock) {
do_warn(
_("inode %" PRIu64 " - bad rt extent overflows - start %" PRIu64 ", "
"end %" PRIu64 ", offset %" PRIu64 "\n"),
ino,
irec->br_startblock,
irec->br_startblock + irec->br_blockcount - 1,
irec->br_startoff);
return 1;
}
/*
* verify that the blocks listed in the record
* are multiples of an extent
*/
if (xfs_sb_version_hasextflgbit(&mp->m_sb) == 0 &&
(irec->br_startblock % mp->m_sb.sb_rextsize != 0 ||
irec->br_blockcount % mp->m_sb.sb_rextsize != 0)) {
do_warn(
_("malformed rt inode extent [%" PRIu64 " %" PRIu64 "] (fs rtext size = %u)\n"),
irec->br_startblock,
irec->br_blockcount,
mp->m_sb.sb_rextsize);
return 1;
}
/*
* set the appropriate number of extents
* this iterates block by block, this can be optimised using extents
*/
for (b = irec->br_startblock; b < irec->br_startblock +
irec->br_blockcount; b += mp->m_sb.sb_rextsize) {
ext = (xfs_rtblock_t) b / mp->m_sb.sb_rextsize;
pwe = xfs_sb_version_hasextflgbit(&mp->m_sb) &&
irec->br_state == XFS_EXT_UNWRITTEN &&
(b % mp->m_sb.sb_rextsize != 0);
if (check_dups == 1) {
if (search_rt_dup_extent(mp, ext) && !pwe) {
do_warn(
_("data fork in rt ino %" PRIu64 " claims dup rt extent,"
"off - %" PRIu64 ", start - %" PRIu64 ", count %" PRIu64 "\n"),
ino,
irec->br_startoff,
irec->br_startblock,
irec->br_blockcount);
return 1;
}
continue;
}
state = get_rtbmap(ext);
switch (state) {
case XR_E_FREE:
case XR_E_UNKNOWN:
set_rtbmap(ext, XR_E_INUSE);
break;
case XR_E_BAD_STATE:
do_error(
_("bad state in rt block map %" PRIu64 "\n"),
ext);
case XR_E_FS_MAP:
case XR_E_INO:
case XR_E_INUSE_FS:
do_error(
_("data fork in rt inode %" PRIu64 " found metadata block %" PRIu64 " in rt bmap\n"),
ino, ext);
case XR_E_INUSE:
if (pwe)
break;
/* fall through */
case XR_E_MULT:
set_rtbmap(ext, XR_E_MULT);
do_warn(
_("data fork in rt inode %" PRIu64 " claims used rt block %" PRIu64 "\n"),
ino, ext);
return 1;
case XR_E_FREE1:
default:
do_error(
_("illegal state %d in rt block map %" PRIu64 "\n"),
state, b);
}
}
/*
* bump up the block counter
*/
*tot += irec->br_blockcount;
return 0;
}
/*
* return 1 if inode should be cleared, 0 otherwise
* if check_dups should be set to 1, that implies that
* the primary purpose of this call is to see if the
* file overlaps with any duplicate extents (in the
* duplicate extent list).
*/
static int
process_bmbt_reclist_int(
xfs_mount_t *mp,
xfs_bmbt_rec_t *rp,
int *numrecs,
int type,
xfs_ino_t ino,
xfs_rfsblock_t *tot,
blkmap_t **blkmapp,
xfs_fileoff_t *first_key,
xfs_fileoff_t *last_key,
int check_dups,
int whichfork)
{
xfs_bmbt_irec_t irec;
xfs_filblks_t cp = 0; /* prev count */
xfs_fsblock_t sp = 0; /* prev start */
xfs_fileoff_t op = 0; /* prev offset */
xfs_fsblock_t b;
char *ftype;
char *forkname = get_forkname(whichfork);
int i;
int state;
xfs_agnumber_t agno;
xfs_agblock_t agbno;
xfs_agblock_t ebno;
xfs_extlen_t blen;
xfs_agnumber_t locked_agno = -1;
int error = 1;
if (type == XR_INO_RTDATA)
ftype = ftype_real_time;
else
ftype = ftype_regular;
for (i = 0; i < *numrecs; i++) {
libxfs_bmbt_disk_get_all((rp +i), &irec);
if (i == 0)
*last_key = *first_key = irec.br_startoff;
else
*last_key = irec.br_startoff;
if (i > 0 && op + cp > irec.br_startoff) {
do_warn(
_("bmap rec out of order, inode %" PRIu64" entry %d "
"[o s c] [%" PRIu64 " %" PRIu64 " %" PRIu64 "], "
"%d [%" PRIu64 " %" PRIu64 " %" PRIu64 "]\n"),
ino, i, irec.br_startoff, irec.br_startblock,
irec.br_blockcount, i - 1, op, sp, cp);
goto done;
}
op = irec.br_startoff;
cp = irec.br_blockcount;
sp = irec.br_startblock;
/*
* check numeric validity of the extent
*/
if (irec.br_blockcount == 0) {
do_warn(
_("zero length extent (off = %" PRIu64 ", fsbno = %" PRIu64 ") in ino %" PRIu64 "\n"),
irec.br_startoff,
irec.br_startblock,
ino);
goto done;
}
if (type == XR_INO_RTDATA && whichfork == XFS_DATA_FORK) {
/*
* realtime bitmaps don't use AG locks, so returning
* immediately is fine for this code path.
*/
if (process_rt_rec(mp, &irec, ino, tot, check_dups))
return 1;
/*
* skip rest of loop processing since that'irec.br_startblock
* all for regular file forks and attr forks
*/
continue;
}
/*
* regular file data fork or attribute fork
*/
switch (verify_dfsbno_range(mp, irec.br_startblock,
irec.br_blockcount)) {
case XR_DFSBNORANGE_VALID:
break;
case XR_DFSBNORANGE_BADSTART:
do_warn(
_("inode %" PRIu64 " - bad extent starting block number %" PRIu64 ", offset %" PRIu64 "\n"),
ino,
irec.br_startblock,
irec.br_startoff);
goto done;
case XR_DFSBNORANGE_BADEND:
do_warn(
_("inode %" PRIu64 " - bad extent last block number %" PRIu64 ", offset %" PRIu64 "\n"),
ino,
irec.br_startblock + irec.br_blockcount - 1,
irec.br_startoff);
goto done;
case XR_DFSBNORANGE_OVERFLOW:
do_warn(
_("inode %" PRIu64 " - bad extent overflows - start %" PRIu64 ", "
"end %" PRIu64 ", offset %" PRIu64 "\n"),
ino,
irec.br_startblock,
irec.br_startblock + irec.br_blockcount - 1,
irec.br_startoff);
goto done;
}
/* Ensure this extent does not extend beyond the max offset */
if (irec.br_startoff + irec.br_blockcount - 1 >
fs_max_file_offset) {
do_warn(
_("inode %" PRIu64 " - extent exceeds max offset - start %" PRIu64 ", "
"count %" PRIu64 ", physical block %" PRIu64 "\n"),
ino, irec.br_startoff, irec.br_blockcount,
irec.br_startblock);
goto done;
}
if (blkmapp && *blkmapp) {
int error2;
error2 = blkmap_set_ext(blkmapp, irec.br_startoff,
irec.br_startblock, irec.br_blockcount);
if (error2) {
/*
* we don't want to clear the inode due to an
* internal bmap tracking error, but if we've
* run out of memory then we simply can't
* validate that the filesystem is consistent.
* Hence just abort at this point with an ENOMEM
* error.
*/
do_abort(
_("Fatal error: inode %" PRIu64 " - blkmap_set_ext(): %s\n"
"\t%s fork, off - %" PRIu64 ", start - %" PRIu64 ", cnt %" PRIu64 "\n"),
ino, strerror(error2), forkname,
irec.br_startoff, irec.br_startblock,
irec.br_blockcount);
}
}
/*
* Profiling shows that the following loop takes the
* most time in all of xfs_repair.
*/
agno = XFS_FSB_TO_AGNO(mp, irec.br_startblock);
agbno = XFS_FSB_TO_AGBNO(mp, irec.br_startblock);
ebno = agbno + irec.br_blockcount;
if (agno != locked_agno) {
if (locked_agno != -1)
pthread_mutex_unlock(&ag_locks[locked_agno].lock);
pthread_mutex_lock(&ag_locks[agno].lock);
locked_agno = agno;
}
if (check_dups) {
/*
* if we're just checking the bmap for dups,
* return if we find one, otherwise, continue
* checking each entry without setting the
* block bitmap
*/
if (!(type == XR_INO_DATA &&
xfs_sb_version_hasreflink(&mp->m_sb)) &&
search_dup_extent(agno, agbno, ebno)) {
do_warn(
_("%s fork in ino %" PRIu64 " claims dup extent, "
"off - %" PRIu64 ", start - %" PRIu64 ", cnt %" PRIu64 "\n"),
forkname, ino, irec.br_startoff,
irec.br_startblock,
irec.br_blockcount);
goto done;
}
*tot += irec.br_blockcount;
continue;
}
for (b = irec.br_startblock;
agbno < ebno;
b += blen, agbno += blen) {
state = get_bmap_ext(agno, agbno, ebno, &blen);
switch (state) {
case XR_E_FREE:
case XR_E_FREE1:
do_warn(
_("%s fork in ino %" PRIu64 " claims free block %" PRIu64 "\n"),
forkname, ino, (uint64_t) b);
/* fall through ... */
case XR_E_INUSE1: /* seen by rmap */
case XR_E_UNKNOWN:
break;
case XR_E_BAD_STATE:
do_error(_("bad state in block map %" PRIu64 "\n"), b);
case XR_E_FS_MAP1:
case XR_E_INO1:
case XR_E_INUSE_FS1:
do_warn(_("rmap claims metadata use!\n"));
/* fall through */
case XR_E_FS_MAP:
case XR_E_INO:
case XR_E_INUSE_FS:
case XR_E_REFC:
do_warn(
_("%s fork in inode %" PRIu64 " claims metadata block %" PRIu64 "\n"),
forkname, ino, b);
goto done;
case XR_E_INUSE:
case XR_E_MULT:
if (type == XR_INO_DATA &&
xfs_sb_version_hasreflink(&mp->m_sb))
break;
do_warn(
_("%s fork in %s inode %" PRIu64 " claims used block %" PRIu64 "\n"),
forkname, ftype, ino, b);
goto done;
case XR_E_COW:
do_warn(
_("%s fork in %s inode %" PRIu64 " claims CoW block %" PRIu64 "\n"),
forkname, ftype, ino, b);
goto done;
default:
do_error(
_("illegal state %d in block map %" PRIu64 "\n"),
state, b);
goto done;
}
}
/*
* Update the internal extent map only after we've checked
* every block in this extent. The first time we reject this
* data fork we'll try to rebuild the bmbt from rmap data.
* After a successful rebuild we'll try this scan again.
* (If the rebuild fails we won't come back here.)
*/
agbno = XFS_FSB_TO_AGBNO(mp, irec.br_startblock);
ebno = agbno + irec.br_blockcount;
for (; agbno < ebno; agbno += blen) {
state = get_bmap_ext(agno, agbno, ebno, &blen);
switch (state) {
case XR_E_FREE:
case XR_E_FREE1:
case XR_E_INUSE1:
case XR_E_UNKNOWN:
set_bmap_ext(agno, agbno, blen, XR_E_INUSE);
break;
case XR_E_INUSE:
case XR_E_MULT:
set_bmap_ext(agno, agbno, blen, XR_E_MULT);
break;
default:
break;
}
}
if (collect_rmaps) { /* && !check_dups */
error = rmap_add_rec(mp, ino, whichfork, &irec);
if (error)
do_error(
_("couldn't add reverse mapping\n")
);
}
*tot += irec.br_blockcount;
}
error = 0;
done:
if (locked_agno != -1)
pthread_mutex_unlock(&ag_locks[locked_agno].lock);
if (i != *numrecs) {
ASSERT(i < *numrecs);
do_warn(_("correcting nextents for inode %" PRIu64 "\n"), ino);
*numrecs = i;
}
return error;
}
/*
* return 1 if inode should be cleared, 0 otherwise, sets block bitmap
* as a side-effect
*/
int
process_bmbt_reclist(
xfs_mount_t *mp,
xfs_bmbt_rec_t *rp,
int *numrecs,
int type,
xfs_ino_t ino,
xfs_rfsblock_t *tot,
blkmap_t **blkmapp,
xfs_fileoff_t *first_key,
xfs_fileoff_t *last_key,
int whichfork)
{
return process_bmbt_reclist_int(mp, rp, numrecs, type, ino, tot,
blkmapp, first_key, last_key, 0, whichfork);
}
/*
* return 1 if inode should be cleared, 0 otherwise, does not set
* block bitmap
*/
int
scan_bmbt_reclist(
xfs_mount_t *mp,
xfs_bmbt_rec_t *rp,
int *numrecs,
int type,
xfs_ino_t ino,
xfs_rfsblock_t *tot,
int whichfork)
{
xfs_fileoff_t first_key = 0;
xfs_fileoff_t last_key = 0;
return process_bmbt_reclist_int(mp, rp, numrecs, type, ino, tot,
NULL, &first_key, &last_key, 1, whichfork);
}
/*
* Grab the buffer backing an inode. This is meant for routines that
* work with inodes one at a time in any order (like walking the
* unlinked lists to look for inodes). The caller is responsible for
* writing/releasing the buffer.
*/
struct xfs_buf *
get_agino_buf(
struct xfs_mount *mp,
xfs_agnumber_t agno,
xfs_agino_t agino,
struct xfs_dinode **dipp)
{
struct xfs_buf *bp;
int cluster_size;
int ino_per_cluster;
xfs_agino_t cluster_agino;
xfs_daddr_t cluster_daddr;
xfs_daddr_t cluster_blks;
/*
* Inode buffers have been read into memory in inode_cluster_size
* chunks (or one FSB). To find the correct buffer for an inode,
* we must find the buffer for its cluster, add the appropriate
* offset, and return that.
*/
cluster_size = MAX(mp->m_inode_cluster_size, mp->m_sb.sb_blocksize);
ino_per_cluster = cluster_size / mp->m_sb.sb_inodesize;
cluster_agino = agino & ~(ino_per_cluster - 1);
cluster_blks = XFS_FSB_TO_DADDR(mp, MAX(1,
mp->m_inode_cluster_size >> mp->m_sb.sb_blocklog));
cluster_daddr = XFS_AGB_TO_DADDR(mp, agno,
XFS_AGINO_TO_AGBNO(mp, cluster_agino));
#ifdef XR_INODE_TRACE
printf("cluster_size %d ipc %d clusagino %d daddr %lld sectors %lld\n",
cluster_size, ino_per_cluster, cluster_agino, cluster_daddr,
cluster_blks);
#endif
bp = libxfs_readbuf(mp->m_dev, cluster_daddr, cluster_blks,
0, &xfs_inode_buf_ops);
if (!bp) {
do_warn(_("cannot read inode (%u/%u), disk block %" PRIu64 "\n"),
agno, cluster_agino, cluster_daddr);
return NULL;
}
*dipp = xfs_make_iptr(mp, bp, agino - cluster_agino);
ASSERT(!xfs_sb_version_hascrc(&mp->m_sb) ||
XFS_AGINO_TO_INO(mp, agno, agino) ==
be64_to_cpu((*dipp)->di_ino));
return bp;
}
/*
* higher level inode processing stuff starts here:
* first, one utility routine for each type of inode
*/
/*
* return 1 if inode should be cleared, 0 otherwise
*/
static int
process_btinode(
xfs_mount_t *mp,
xfs_agnumber_t agno,
xfs_agino_t ino,
xfs_dinode_t *dip,
int type,
int *dirty,
xfs_rfsblock_t *tot,
uint64_t *nex,
blkmap_t **blkmapp,
int whichfork,
int check_dups)
{
xfs_bmdr_block_t *dib;
xfs_fileoff_t last_key;
xfs_fileoff_t first_key = 0;
xfs_ino_t lino;
xfs_bmbt_ptr_t *pp;
xfs_bmbt_key_t *pkey;
char *forkname = get_forkname(whichfork);
int i;
int level;
int numrecs;
bmap_cursor_t cursor;
uint64_t magic;
dib = (xfs_bmdr_block_t *)XFS_DFORK_PTR(dip, whichfork);
lino = XFS_AGINO_TO_INO(mp, agno, ino);
*tot = 0;
*nex = 0;
magic = xfs_sb_version_hascrc(&mp->m_sb) ? XFS_BMAP_CRC_MAGIC
: XFS_BMAP_MAGIC;
level = be16_to_cpu(dib->bb_level);
numrecs = be16_to_cpu(dib->bb_numrecs);
if ((level == 0) || (level > XFS_BM_MAXLEVELS(mp, whichfork))) {
/*
* XXX - if we were going to fix up the inode,
* we'd try to treat the fork as an interior
* node and see if we could get an accurate
* level value from one of the blocks pointed
* to by the pointers in the fork. For now
* though, we just bail (and blow out the inode).
*/
do_warn(
_("bad level %d in inode %" PRIu64 " bmap btree root block\n"),
level, XFS_AGINO_TO_INO(mp, agno, ino));
return(1);
}
if (numrecs == 0) {
do_warn(
_("bad numrecs 0 in inode %" PRIu64 " bmap btree root block\n"),
XFS_AGINO_TO_INO(mp, agno, ino));
return(1);
}
/*
* use bmdr/dfork_dsize since the root block is in the data fork
*/
if (XFS_BMDR_SPACE_CALC(numrecs) > XFS_DFORK_SIZE(dip, mp, whichfork)) {
do_warn(
_("indicated size of %s btree root (%d bytes) greater than space in "
"inode %" PRIu64 " %s fork\n"),
forkname, XFS_BMDR_SPACE_CALC(numrecs), lino, forkname);
return(1);
}
init_bm_cursor(&cursor, level + 1);
pp = XFS_BMDR_PTR_ADDR(dib, 1,
libxfs_bmdr_maxrecs(XFS_DFORK_SIZE(dip, mp, whichfork), 0));
pkey = XFS_BMDR_KEY_ADDR(dib, 1);
last_key = NULLFILEOFF;
for (i = 0; i < numrecs; i++) {
/*
* XXX - if we were going to do more to fix up the inode
* btree, we'd do it right here. For now, if there's a
* problem, we'll bail out and presumably clear the inode.
*/
if (!verify_dfsbno(mp, get_unaligned_be64(&pp[i]))) {
do_warn(
_("bad bmap btree ptr 0x%" PRIx64 " in ino %" PRIu64 "\n"),
get_unaligned_be64(&pp[i]), lino);
return(1);
}
if (scan_lbtree(get_unaligned_be64(&pp[i]), level, scan_bmapbt,
type, whichfork, lino, tot, nex, blkmapp,
&cursor, 1, check_dups, magic,
&xfs_bmbt_buf_ops))
return(1);
/*
* fix key (offset) mismatches between the keys in root
* block records and the first key of each child block.
* fixes cases where entries have been shifted between
* blocks but the parent hasn't been updated
*/
if (!check_dups && cursor.level[level-1].first_key !=
get_unaligned_be64(&pkey[i].br_startoff)) {
if (!no_modify) {
do_warn(
_("correcting key in bmbt root (was %" PRIu64 ", now %" PRIu64") in inode "
"%" PRIu64" %s fork\n"),
get_unaligned_be64(&pkey[i].br_startoff),
cursor.level[level-1].first_key,
XFS_AGINO_TO_INO(mp, agno, ino),
forkname);
*dirty = 1;
put_unaligned_be64(
cursor.level[level-1].first_key,
&pkey[i].br_startoff);
} else {
do_warn(
_("bad key in bmbt root (is %" PRIu64 ", would reset to %" PRIu64 ") in inode "
"%" PRIu64 " %s fork\n"),
get_unaligned_be64(&pkey[i].br_startoff),
cursor.level[level-1].first_key,
XFS_AGINO_TO_INO(mp, agno, ino),
forkname);
}
}
/*
* make sure that keys are in ascending order. blow out
* inode if the ordering doesn't hold
*/
if (check_dups == 0) {
if (last_key != NULLFILEOFF && last_key >=
cursor.level[level-1].first_key) {
do_warn(
_("out of order bmbt root key %" PRIu64 " in inode %" PRIu64 " %s fork\n"),
first_key,
XFS_AGINO_TO_INO(mp, agno, ino),
forkname);
return(1);
}
last_key = cursor.level[level-1].first_key;
}
}
/*
* Ideally if all the extents are ok (perhaps after further
* checks below?) we'd just move this back into extents format.
* But for now clear it, as the kernel will choke on this
*/
if (*nex <= XFS_DFORK_SIZE(dip, mp, whichfork) /
sizeof(xfs_bmbt_rec_t)) {
do_warn(
_("extent count for ino %" PRIu64 " %s fork too low (%" PRIu64 ") for file format\n"),
lino, forkname, *nex);
return(1);
}
/*
* Check that the last child block's forward sibling pointer
* is NULL.
*/
if (check_dups == 0 &&
cursor.level[0].right_fsbno != NULLFSBLOCK) {
do_warn(
_("bad fwd (right) sibling pointer (saw %" PRIu64 " should be NULLFSBLOCK)\n"),
cursor.level[0].right_fsbno);
do_warn(
_("\tin inode %" PRIu64 " (%s fork) bmap btree block %" PRIu64 "\n"),
XFS_AGINO_TO_INO(mp, agno, ino), forkname,
cursor.level[0].fsbno);
return(1);
}
return(0);
}
/*
* return 1 if inode should be cleared, 0 otherwise
*/
static int
process_exinode(
xfs_mount_t *mp,
xfs_agnumber_t agno,
xfs_agino_t ino,
xfs_dinode_t *dip,
int type,
int *dirty,
xfs_rfsblock_t *tot,
uint64_t *nex,
blkmap_t **blkmapp,
int whichfork,
int check_dups)
{
xfs_ino_t lino;
xfs_bmbt_rec_t *rp;
xfs_fileoff_t first_key;
xfs_fileoff_t last_key;
int32_t numrecs;
int ret;
lino = XFS_AGINO_TO_INO(mp, agno, ino);
rp = (xfs_bmbt_rec_t *)XFS_DFORK_PTR(dip, whichfork);
*tot = 0;
numrecs = XFS_DFORK_NEXTENTS(dip, whichfork);
/*
* We've already decided on the maximum number of extents on the inode,
* and numrecs may be corrupt. Hence make sure we only allow numrecs to
* be in the range of valid on-disk numbers, which is:
* 0 < numrecs < 2^31 - 1
*/
if (numrecs < 0)
numrecs = *nex;
/*
* XXX - if we were going to fix up the btree record,
* we'd do it right here. For now, if there's a problem,
* we'll bail out and presumably clear the inode.
*/
if (check_dups == 0)
ret = process_bmbt_reclist(mp, rp, &numrecs, type, lino,
tot, blkmapp, &first_key, &last_key,
whichfork);
else
ret = scan_bmbt_reclist(mp, rp, &numrecs, type, lino, tot,
whichfork);
*nex = numrecs;
return ret;
}
/*
* return 1 if inode should be cleared, 0 otherwise
*/
static int
process_lclinode(
xfs_mount_t *mp,
xfs_agnumber_t agno,
xfs_agino_t ino,
xfs_dinode_t *dip,
int whichfork)
{
xfs_attr_shortform_t *asf;
xfs_ino_t lino;
lino = XFS_AGINO_TO_INO(mp, agno, ino);
if (whichfork == XFS_DATA_FORK && be64_to_cpu(dip->di_size) >
XFS_DFORK_DSIZE(dip, mp)) {
do_warn(
_("local inode %" PRIu64 " data fork is too large (size = %lld, max = %d)\n"),
lino, (unsigned long long) be64_to_cpu(dip->di_size),
XFS_DFORK_DSIZE(dip, mp));
return(1);
} else if (whichfork == XFS_ATTR_FORK) {
asf = (xfs_attr_shortform_t *)XFS_DFORK_APTR(dip);
if (be16_to_cpu(asf->hdr.totsize) > XFS_DFORK_ASIZE(dip, mp)) {
do_warn(
_("local inode %" PRIu64 " attr fork too large (size %d, max = %d)\n"),
lino, be16_to_cpu(asf->hdr.totsize),
XFS_DFORK_ASIZE(dip, mp));
return(1);
}
if (be16_to_cpu(asf->hdr.totsize) < sizeof(xfs_attr_sf_hdr_t)) {
do_warn(
_("local inode %" PRIu64 " attr too small (size = %d, min size = %zd)\n"),
lino, be16_to_cpu(asf->hdr.totsize),
sizeof(xfs_attr_sf_hdr_t));
return(1);
}
}
return(0);
}
static int
process_symlink_extlist(xfs_mount_t *mp, xfs_ino_t lino, xfs_dinode_t *dino)
{
xfs_fileoff_t expected_offset;
xfs_bmbt_rec_t *rp;
xfs_bmbt_irec_t irec;
int numrecs;
int i;
int max_blocks;
if (be64_to_cpu(dino->di_size) <= XFS_DFORK_DSIZE(dino, mp)) {
if (dino->di_format == XFS_DINODE_FMT_LOCAL)
return 0;
do_warn(
_("mismatch between format (%d) and size (%" PRId64 ") in symlink ino %" PRIu64 "\n"),
dino->di_format,
(int64_t)be64_to_cpu(dino->di_size), lino);
return 1;
}
if (dino->di_format == XFS_DINODE_FMT_LOCAL) {
do_warn(
_("mismatch between format (%d) and size (%" PRId64 ") in symlink inode %" PRIu64 "\n"),
dino->di_format,
(int64_t)be64_to_cpu(dino->di_size), lino);
return 1;
}
rp = (xfs_bmbt_rec_t *)XFS_DFORK_DPTR(dino);
numrecs = be32_to_cpu(dino->di_nextents);
/*
* the max # of extents in a symlink inode is equal to the
* number of max # of blocks required to store the symlink
*/
if (numrecs > max_symlink_blocks) {
do_warn(
_("bad number of extents (%d) in symlink %" PRIu64 " data fork\n"),
numrecs, lino);
return(1);
}
max_blocks = max_symlink_blocks;
expected_offset = 0;
for (i = 0; i < numrecs; i++) {
libxfs_bmbt_disk_get_all((rp +i), &irec);
if (irec.br_startoff != expected_offset) {
do_warn(
_("bad extent #%d offset (%" PRIu64 ") in symlink %" PRIu64 " data fork\n"),
i, irec.br_startoff, lino);
return(1);
}
if (irec.br_blockcount == 0 || irec.br_blockcount > max_blocks) {
do_warn(
_("bad extent #%d count (%" PRIu64 ") in symlink %" PRIu64 " data fork\n"),
i, irec.br_blockcount, lino);
return(1);
}
max_blocks -= irec.br_blockcount;
expected_offset += irec.br_blockcount;
}
return(0);
}
/*
* takes a name and length and returns 1 if the name contains
* a \0, returns 0 otherwise
*/
static int
null_check(char *name, int length)
{
int i;
ASSERT(length < XFS_SYMLINK_MAXLEN);
for (i = 0; i < length; i++, name++) {
if (*name == '\0')
return(1);
}
return(0);
}
/*
* This does /not/ do quotacheck, it validates the basic quota
* inode metadata, checksums, etc.
*/
#define uuid_equal(s,d) (platform_uuid_compare((s),(d)) == 0)
static int
process_quota_inode(
struct xfs_mount *mp,
xfs_ino_t lino,
struct xfs_dinode *dino,
uint ino_type,
struct blkmap *blkmap)
{
xfs_fsblock_t fsbno;
struct xfs_buf *bp;
xfs_filblks_t dqchunklen;
uint dqperchunk;
int quota_type;
char *quota_string;
xfs_dqid_t dqid;
xfs_fileoff_t qbno;
int i;
int t = 0;
switch (ino_type) {
case XR_INO_UQUOTA:
quota_type = XFS_DQ_USER;
quota_string = _("User quota");
break;
case XR_INO_GQUOTA:
quota_type = XFS_DQ_GROUP;
quota_string = _("Group quota");
break;
case XR_INO_PQUOTA:
quota_type = XFS_DQ_PROJ;
quota_string = _("Project quota");
break;
default:
ASSERT(0);
}
dqchunklen = XFS_FSB_TO_BB(mp, XFS_DQUOT_CLUSTER_SIZE_FSB);
dqperchunk = libxfs_calc_dquots_per_chunk(dqchunklen);
dqid = 0;
qbno = NULLFILEOFF;
while ((qbno = blkmap_next_off(blkmap, qbno, &t)) != NULLFILEOFF) {
xfs_dqblk_t *dqb;
int writebuf = 0;
fsbno = blkmap_get(blkmap, qbno);
dqid = (xfs_dqid_t)qbno * dqperchunk;
bp = libxfs_readbuf(mp->m_dev, XFS_FSB_TO_DADDR(mp, fsbno),
dqchunklen, 0, &xfs_dquot_buf_ops);
if (!bp) {
do_warn(
_("cannot read inode %" PRIu64 ", file block %" PRIu64 ", disk block %" PRIu64 "\n"),
lino, qbno, fsbno);
return 1;
}
dqb = bp->b_addr;
for (i = 0; i < dqperchunk; i++, dqid++, dqb++) {
int bad_dqb = 0;
/* We only print the first problem we find */
if (xfs_sb_version_hascrc(&mp->m_sb)) {
if (!libxfs_verify_cksum((char *)dqb,
sizeof(*dqb),
XFS_DQUOT_CRC_OFF)) {
do_warn(_("%s: bad CRC for id %u. "),
quota_string, dqid);
bad_dqb = 1;
goto bad;
}
if (!uuid_equal(&dqb->dd_uuid,
&mp->m_sb.sb_meta_uuid)) {
do_warn(_("%s: bad UUID for id %u. "),
quota_string, dqid);
bad_dqb = 1;
goto bad;
}
}
if (libxfs_dquot_verify(mp, &dqb->dd_diskdq, dqid,
quota_type, 0) != NULL) {
do_warn(_("%s: Corrupt quota for id %u. "),
quota_string, dqid);
bad_dqb = 1;
}
bad:
if (bad_dqb) {
if (no_modify)
do_warn(_("Would correct.\n"));
else {
do_warn(_("Corrected.\n"));
libxfs_dquot_repair(mp, &dqb->dd_diskdq,
dqid, quota_type);
writebuf = 1;
}
}
}
if (writebuf && !no_modify)
libxfs_writebuf(bp, 0);
else
libxfs_putbuf(bp);
}
return 0;
}
static int
process_symlink_remote(
struct xfs_mount *mp,
xfs_ino_t lino,
struct xfs_dinode *dino,
struct blkmap *blkmap,
char *dst)
{
xfs_fsblock_t fsbno;
struct xfs_buf *bp;
char *src;
int pathlen;
int offset;
int i;
offset = 0;
pathlen = be64_to_cpu(dino->di_size);
i = 0;
while (pathlen > 0) {
int blk_cnt = 1;
int byte_cnt;
int badcrc = 0;
fsbno = blkmap_get(blkmap, i);
if (fsbno == NULLFSBLOCK) {
do_warn(
_("cannot read inode %" PRIu64 ", file block %d, NULL disk block\n"),
lino, i);
return 1;
}
/*
* There's a symlink header for each contiguous extent. If
* there are contiguous blocks, read them in one go.
*/
while (blk_cnt <= max_symlink_blocks) {
if (blkmap_get(blkmap, i + 1) != fsbno + 1)
break;
blk_cnt++;
i++;
}
byte_cnt = XFS_FSB_TO_B(mp, blk_cnt);
bp = libxfs_readbuf(mp->m_dev, XFS_FSB_TO_DADDR(mp, fsbno),
BTOBB(byte_cnt), 0, &xfs_symlink_buf_ops);
if (!bp) {
do_warn(
_("cannot read inode %" PRIu64 ", file block %d, disk block %" PRIu64 "\n"),
lino, i, fsbno);
return 1;
}
if (bp->b_error == -EFSCORRUPTED) {
do_warn(
_("Corrupt symlink remote block %" PRIu64 ", inode %" PRIu64 ".\n"),
fsbno, lino);
libxfs_putbuf(bp);
return 1;
}
if (bp->b_error == -EFSBADCRC) {
do_warn(
_("Bad symlink buffer CRC, block %" PRIu64 ", inode %" PRIu64 ".\n"
"Correcting CRC, but symlink may be bad.\n"), fsbno, lino);
badcrc = 1;
}
byte_cnt = XFS_SYMLINK_BUF_SPACE(mp, byte_cnt);
byte_cnt = MIN(pathlen, byte_cnt);
src = bp->b_addr;
if (xfs_sb_version_hascrc(&mp->m_sb)) {
if (!libxfs_symlink_hdr_ok(lino, offset,
byte_cnt, bp)) {
do_warn(
_("bad symlink header ino %" PRIu64 ", file block %d, disk block %" PRIu64 "\n"),
lino, i, fsbno);
libxfs_putbuf(bp);
return 1;
}
src += sizeof(struct xfs_dsymlink_hdr);
}
memmove(dst + offset, src, byte_cnt);
pathlen -= byte_cnt;
offset += byte_cnt;
i++;
if (badcrc && !no_modify)
libxfs_writebuf(bp, 0);
else
libxfs_putbuf(bp);
}
return 0;
}
/*
* like usual, returns 0 if everything's ok and 1 if something's
* bogus
*/
static int
process_symlink(
xfs_mount_t *mp,
xfs_ino_t lino,
xfs_dinode_t *dino,
blkmap_t *blkmap)
{
char *symlink;
char data[XFS_SYMLINK_MAXLEN];
/*
* check size against kernel symlink limits. we know
* size is consistent with inode storage format -- e.g.
* the inode is structurally ok so we don't have to check
* for that
*/
if (be64_to_cpu(dino->di_size) >= XFS_SYMLINK_MAXLEN) {
do_warn(_("symlink in inode %" PRIu64 " too long (%llu chars)\n"),
lino, (unsigned long long) be64_to_cpu(dino->di_size));
return(1);
}
if (be64_to_cpu(dino->di_size) == 0) {
do_warn(_("zero size symlink in inode %" PRIu64 "\n"), lino);
return 1;
}
/*
* have to check symlink component by component.
* get symlink contents into data area
*/
symlink = &data[0];
if (be64_to_cpu(dino->di_size) <= XFS_DFORK_DSIZE(dino, mp)) {
/*
* local symlink, just copy the symlink out of the
* inode into the data area
*/
memmove(symlink, XFS_DFORK_DPTR(dino),
be64_to_cpu(dino->di_size));
} else {
int error;
error = process_symlink_remote(mp, lino, dino, blkmap, symlink);
if (error)
return error;
}
data[be64_to_cpu(dino->di_size)] = '\0';
/*
* check for nulls
*/
if (null_check(symlink, be64_to_cpu(dino->di_size))) {
do_warn(
_("found illegal null character in symlink inode %" PRIu64 "\n"),
lino);
return(1);
}
return(0);
}
/*
* called to process the set of misc inode special inode types
* that have no associated data storage (fifos, pipes, devices, etc.).
*/
static int
process_misc_ino_types(xfs_mount_t *mp,
xfs_dinode_t *dino,
xfs_ino_t lino,
int type)
{
/*
* disallow mountpoint inodes until such time as the
* kernel actually allows them to be created (will
* probably require a superblock version rev, sigh).
*/
if (type == XR_INO_MOUNTPOINT) {
do_warn(
_("inode %" PRIu64 " has bad inode type (IFMNT)\n"), lino);
return(1);
}
/*
* must also have a zero size
*/
if (be64_to_cpu(dino->di_size) != 0) {
switch (type) {
case XR_INO_CHRDEV:
do_warn(
_("size of character device inode %" PRIu64 " != 0 (%" PRId64 " bytes)\n"), lino,
(int64_t)be64_to_cpu(dino->di_size));
break;
case XR_INO_BLKDEV:
do_warn(
_("size of block device inode %" PRIu64 " != 0 (%" PRId64 " bytes)\n"), lino,
(int64_t)be64_to_cpu(dino->di_size));
break;
case XR_INO_SOCK:
do_warn(
_("size of socket inode %" PRIu64 " != 0 (%" PRId64 " bytes)\n"), lino,
(int64_t)be64_to_cpu(dino->di_size));
break;
case XR_INO_FIFO:
do_warn(
_("size of fifo inode %" PRIu64 " != 0 (%" PRId64 " bytes)\n"), lino,
(int64_t)be64_to_cpu(dino->di_size));
break;
case XR_INO_UQUOTA:
case XR_INO_GQUOTA:
case XR_INO_PQUOTA:
do_warn(
_("size of quota inode %" PRIu64 " != 0 (%" PRId64 " bytes)\n"), lino,
(int64_t)be64_to_cpu(dino->di_size));
break;
default:
do_warn(_("Internal error - process_misc_ino_types, "
"illegal type %d\n"), type);
abort();
}
return(1);
}
return(0);
}
static int
process_misc_ino_types_blocks(xfs_rfsblock_t totblocks, xfs_ino_t lino, int type)
{
/*
* you can not enforce all misc types have zero data fork blocks
* by checking dino->di_nblocks because atotblocks (attribute
* blocks) are part of nblocks. We must check this later when atotblocks
* has been calculated or by doing a simple check that anExtents == 0.
* We must also guarantee that totblocks is 0. Thus nblocks checking
* will be done later in process_dinode_int for misc types.
*/
if (totblocks != 0) {
switch (type) {
case XR_INO_CHRDEV:
do_warn(
_("size of character device inode %" PRIu64 " != 0 (%" PRIu64 " blocks)\n"),
lino, totblocks);
break;
case XR_INO_BLKDEV:
do_warn(
_("size of block device inode %" PRIu64 " != 0 (%" PRIu64 " blocks)\n"),
lino, totblocks);
break;
case XR_INO_SOCK:
do_warn(
_("size of socket inode %" PRIu64 " != 0 (%" PRIu64 " blocks)\n"),
lino, totblocks);
break;
case XR_INO_FIFO:
do_warn(
_("size of fifo inode %" PRIu64 " != 0 (%" PRIu64 " blocks)\n"),
lino, totblocks);
break;
default:
return(0);
}
return(1);
}
return (0);
}
static inline int
dinode_fmt(
xfs_dinode_t *dino)
{
return be16_to_cpu(dino->di_mode) & S_IFMT;
}
static inline void
change_dinode_fmt(
xfs_dinode_t *dino,
int new_fmt)
{
int mode = be16_to_cpu(dino->di_mode);
ASSERT((new_fmt & ~S_IFMT) == 0);
mode &= ~S_IFMT;
mode |= new_fmt;
dino->di_mode = cpu_to_be16(mode);
}
static int
check_dinode_mode_format(
xfs_dinode_t *dinoc)
{
if (dinoc->di_format >= XFS_DINODE_FMT_UUID)
return -1; /* FMT_UUID is not used */
switch (dinode_fmt(dinoc)) {
case S_IFIFO:
case S_IFCHR:
case S_IFBLK:
case S_IFSOCK:
return (dinoc->di_format != XFS_DINODE_FMT_DEV) ? -1 : 0;
case S_IFDIR:
return (dinoc->di_format < XFS_DINODE_FMT_LOCAL ||
dinoc->di_format > XFS_DINODE_FMT_BTREE) ? -1 : 0;
case S_IFREG:
return (dinoc->di_format < XFS_DINODE_FMT_EXTENTS ||
dinoc->di_format > XFS_DINODE_FMT_BTREE) ? -1 : 0;
case S_IFLNK:
return (dinoc->di_format < XFS_DINODE_FMT_LOCAL ||
dinoc->di_format > XFS_DINODE_FMT_EXTENTS) ? -1 : 0;
default: ;
}
return 0; /* invalid modes are checked elsewhere */
}
/*
* If inode is a superblock inode, does type check to make sure is it valid.
* Returns 0 if it's valid, non-zero if it needs to be cleared.
*/
static int
process_check_sb_inodes(
xfs_mount_t *mp,
xfs_dinode_t *dinoc,
xfs_ino_t lino,
int *type,
int *dirty)
{
if (lino == mp->m_sb.sb_rootino) {
if (*type != XR_INO_DIR) {
do_warn(_("root inode %" PRIu64 " has bad type 0x%x\n"),
lino, dinode_fmt(dinoc));
*type = XR_INO_DIR;
if (!no_modify) {
do_warn(_("resetting to directory\n"));
change_dinode_fmt(dinoc, S_IFDIR);
*dirty = 1;
} else
do_warn(_("would reset to directory\n"));
}
return 0;
}
if (lino == mp->m_sb.sb_uquotino) {
if (*type != XR_INO_UQUOTA) {
do_warn(_("user quota inode %" PRIu64 " has bad type 0x%x\n"),
lino, dinode_fmt(dinoc));
mp->m_sb.sb_uquotino = NULLFSINO;
return 1;
}
return 0;
}
if (lino == mp->m_sb.sb_gquotino) {
if (*type != XR_INO_GQUOTA) {
do_warn(_("group quota inode %" PRIu64 " has bad type 0x%x\n"),
lino, dinode_fmt(dinoc));
mp->m_sb.sb_gquotino = NULLFSINO;
return 1;
}
return 0;
}
if (lino == mp->m_sb.sb_pquotino) {
if (*type != XR_INO_PQUOTA) {
do_warn(_("project quota inode %" PRIu64 " has bad type 0x%x\n"),
lino, dinode_fmt(dinoc));
mp->m_sb.sb_pquotino = NULLFSINO;
return 1;
}
return 0;
}
if (lino == mp->m_sb.sb_rsumino) {
if (*type != XR_INO_RTSUM) {
do_warn(
_("realtime summary inode %" PRIu64 " has bad type 0x%x, "),
lino, dinode_fmt(dinoc));
if (!no_modify) {
do_warn(_("resetting to regular file\n"));
change_dinode_fmt(dinoc, S_IFREG);
*dirty = 1;
} else {
do_warn(_("would reset to regular file\n"));
}
}
if (mp->m_sb.sb_rblocks == 0 && dinoc->di_nextents != 0) {
do_warn(
_("bad # of extents (%u) for realtime summary inode %" PRIu64 "\n"),
be32_to_cpu(dinoc->di_nextents), lino);
return 1;
}
return 0;
}
if (lino == mp->m_sb.sb_rbmino) {
if (*type != XR_INO_RTBITMAP) {
do_warn(
_("realtime bitmap inode %" PRIu64 " has bad type 0x%x, "),
lino, dinode_fmt(dinoc));
if (!no_modify) {
do_warn(_("resetting to regular file\n"));
change_dinode_fmt(dinoc, S_IFREG);
*dirty = 1;
} else {
do_warn(_("would reset to regular file\n"));
}
}
if (mp->m_sb.sb_rblocks == 0 && dinoc->di_nextents != 0) {
do_warn(
_("bad # of extents (%u) for realtime bitmap inode %" PRIu64 "\n"),
be32_to_cpu(dinoc->di_nextents), lino);
return 1;
}
return 0;
}
return 0;
}
/*
* general size/consistency checks:
*
* if the size <= size of the data fork, directories must be
* local inodes unlike regular files which would be extent inodes.
* all the other mentioned types have to have a zero size value.
*
* if the size and format don't match, get out now rather than
* risk trying to process a non-existent extents or btree
* type data fork.
*/
static int
process_check_inode_sizes(
xfs_mount_t *mp,
xfs_dinode_t *dino,
xfs_ino_t lino,
int type)
{
xfs_fsize_t size = be64_to_cpu(dino->di_size);
switch (type) {
case XR_INO_DIR:
if (size <= XFS_DFORK_DSIZE(dino, mp) &&
dino->di_format != XFS_DINODE_FMT_LOCAL) {
do_warn(
_("mismatch between format (%d) and size (%" PRId64 ") in directory ino %" PRIu64 "\n"),
dino->di_format, size, lino);
return 1;
}
if (size > XFS_DIR2_LEAF_OFFSET) {
do_warn(
_("directory inode %" PRIu64 " has bad size %" PRId64 "\n"),
lino, size);
return 1;
}
break;
case XR_INO_SYMLINK:
if (process_symlink_extlist(mp, lino, dino)) {
do_warn(_("bad data fork in symlink %" PRIu64 "\n"), lino);
return 1;
}
break;
case XR_INO_CHRDEV: /* fall through to FIFO case ... */
case XR_INO_BLKDEV: /* fall through to FIFO case ... */
case XR_INO_SOCK: /* fall through to FIFO case ... */
case XR_INO_MOUNTPOINT: /* fall through to FIFO case ... */
case XR_INO_FIFO:
if (process_misc_ino_types(mp, dino, lino, type))
return 1;
break;
case XR_INO_UQUOTA:
case XR_INO_GQUOTA:
case XR_INO_PQUOTA:
/* Quota inodes have same restrictions as above types */
if (process_misc_ino_types(mp, dino, lino, type))
return 1;
break;
case XR_INO_RTDATA:
/*
* if we have no realtime blocks, any inode claiming
* to be a real-time file is bogus
*/
if (mp->m_sb.sb_rblocks == 0) {
do_warn(
_("found inode %" PRIu64 " claiming to be a real-time file\n"), lino);
return 1;
}
break;
case XR_INO_RTBITMAP:
if (size != (int64_t)mp->m_sb.sb_rbmblocks *
mp->m_sb.sb_blocksize) {
do_warn(
_("realtime bitmap inode %" PRIu64 " has bad size %" PRId64 " (should be %" PRIu64 ")\n"),
lino, size,
(int64_t) mp->m_sb.sb_rbmblocks *
mp->m_sb.sb_blocksize);
return 1;
}
break;
case XR_INO_RTSUM:
if (size != mp->m_rsumsize) {
do_warn(
_("realtime summary inode %" PRIu64 " has bad size %" PRId64 " (should be %d)\n"),
lino, size, mp->m_rsumsize);
return 1;
}
break;
default:
break;
}
return 0;
}
/*
* check for illegal values of forkoff
*/
static int
process_check_inode_forkoff(
xfs_mount_t *mp,
xfs_dinode_t *dino,
xfs_ino_t lino)
{
if (dino->di_forkoff == 0)
return 0;
switch (dino->di_format) {
case XFS_DINODE_FMT_DEV:
if (dino->di_forkoff != (roundup(sizeof(xfs_dev_t), 8) >> 3)) {
do_warn(
_("bad attr fork offset %d in dev inode %" PRIu64 ", should be %d\n"),
dino->di_forkoff, lino,
(int)(roundup(sizeof(xfs_dev_t), 8) >> 3));
return 1;
}
break;
case XFS_DINODE_FMT_LOCAL: /* fall through ... */
case XFS_DINODE_FMT_EXTENTS: /* fall through ... */
case XFS_DINODE_FMT_BTREE:
if (dino->di_forkoff >=
(XFS_LITINO(mp, dino->di_version) >> 3)) {
do_warn(
_("bad attr fork offset %d in inode %" PRIu64 ", max=%d\n"),
dino->di_forkoff, lino,
XFS_LITINO(mp, dino->di_version) >> 3);
return 1;
}
break;
default:
do_error(_("unexpected inode format %d\n"), dino->di_format);
break;
}
return 0;
}
/*
* Updates the inodes block and extent counts if they are wrong
*/
static int
process_inode_blocks_and_extents(
xfs_dinode_t *dino,
xfs_rfsblock_t nblocks,
uint64_t nextents,
uint64_t anextents,
xfs_ino_t lino,
int *dirty)
{
if (nblocks != be64_to_cpu(dino->di_nblocks)) {
if (!no_modify) {
do_warn(
_("correcting nblocks for inode %" PRIu64 ", was %llu - counted %" PRIu64 "\n"), lino,
(unsigned long long) be64_to_cpu(dino->di_nblocks),
nblocks);
dino->di_nblocks = cpu_to_be64(nblocks);
*dirty = 1;
} else {
do_warn(
_("bad nblocks %llu for inode %" PRIu64 ", would reset to %" PRIu64 "\n"),
(unsigned long long) be64_to_cpu(dino->di_nblocks),
lino, nblocks);
}
}
if (nextents > MAXEXTNUM) {
do_warn(
_("too many data fork extents (%" PRIu64 ") in inode %" PRIu64 "\n"),
nextents, lino);
return 1;
}
if (nextents != be32_to_cpu(dino->di_nextents)) {
if (!no_modify) {
do_warn(
_("correcting nextents for inode %" PRIu64 ", was %d - counted %" PRIu64 "\n"),
lino,
be32_to_cpu(dino->di_nextents),
nextents);
dino->di_nextents = cpu_to_be32(nextents);
*dirty = 1;
} else {
do_warn(
_("bad nextents %d for inode %" PRIu64 ", would reset to %" PRIu64 "\n"),
be32_to_cpu(dino->di_nextents),
lino, nextents);
}
}
if (anextents > MAXAEXTNUM) {
do_warn(
_("too many attr fork extents (%" PRIu64 ") in inode %" PRIu64 "\n"),
anextents, lino);
return 1;
}
if (anextents != be16_to_cpu(dino->di_anextents)) {
if (!no_modify) {
do_warn(
_("correcting anextents for inode %" PRIu64 ", was %d - counted %" PRIu64 "\n"),
lino,
be16_to_cpu(dino->di_anextents), anextents);
dino->di_anextents = cpu_to_be16(anextents);
*dirty = 1;
} else {
do_warn(
_("bad anextents %d for inode %" PRIu64 ", would reset to %" PRIu64 "\n"),
be16_to_cpu(dino->di_anextents),
lino, anextents);
}
}
/*
* We are comparing different units here, but that's fine given that
* an extent has to have at least a block in it.
*/
if (nblocks < nextents + anextents) {
do_warn(
_("nblocks (%" PRIu64 ") smaller than nextents for inode %" PRIu64 "\n"), nblocks, lino);
return 1;
}
return 0;
}
/*
* check data fork -- if it's bad, clear the inode
*/
static int
process_inode_data_fork(
xfs_mount_t *mp,
xfs_agnumber_t agno,
xfs_agino_t ino,
xfs_dinode_t *dino,
int type,
int *dirty,
xfs_rfsblock_t *totblocks,
uint64_t *nextents,
blkmap_t **dblkmap,
int check_dups)
{
xfs_ino_t lino = XFS_AGINO_TO_INO(mp, agno, ino);
int err = 0;
int nex;
/*
* extent count on disk is only valid for positive values. The kernel
* uses negative values in memory. hence if we see negative numbers
* here, trash it!
*/
nex = be32_to_cpu(dino->di_nextents);
if (nex < 0)
*nextents = 1;
else
*nextents = nex;
if (*nextents > be64_to_cpu(dino->di_nblocks))
*nextents = 1;
if (dino->di_format != XFS_DINODE_FMT_LOCAL && type != XR_INO_RTDATA)
*dblkmap = blkmap_alloc(*nextents, XFS_DATA_FORK);
*nextents = 0;
switch (dino->di_format) {
case XFS_DINODE_FMT_LOCAL:
err = process_lclinode(mp, agno, ino, dino, XFS_DATA_FORK);
*totblocks = 0;
break;
case XFS_DINODE_FMT_EXTENTS:
err = process_exinode(mp, agno, ino, dino, type, dirty,
totblocks, nextents, dblkmap, XFS_DATA_FORK,
check_dups);
break;
case XFS_DINODE_FMT_BTREE:
err = process_btinode(mp, agno, ino, dino, type, dirty,
totblocks, nextents, dblkmap, XFS_DATA_FORK,
check_dups);
break;
case XFS_DINODE_FMT_DEV: /* fall through */
err = 0;
break;
default:
do_error(_("unknown format %d, ino %" PRIu64 " (mode = %d)\n"),
dino->di_format, lino, be16_to_cpu(dino->di_mode));
}
if (err) {
do_warn(_("bad data fork in inode %" PRIu64 "\n"), lino);
if (!no_modify) {
*dirty += clear_dinode(mp, dino, lino);
ASSERT(*dirty > 0);
}
return 1;
}
if (check_dups) {
/*
* if check_dups was non-zero, we have to
* re-process data fork to set bitmap since the
* bitmap wasn't set the first time through
*/
switch (dino->di_format) {
case XFS_DINODE_FMT_LOCAL:
err = process_lclinode(mp, agno, ino, dino,
XFS_DATA_FORK);
break;
case XFS_DINODE_FMT_EXTENTS:
err = process_exinode(mp, agno, ino, dino, type,
dirty, totblocks, nextents, dblkmap,
XFS_DATA_FORK, 0);
break;
case XFS_DINODE_FMT_BTREE:
err = process_btinode(mp, agno, ino, dino, type,
dirty, totblocks, nextents, dblkmap,
XFS_DATA_FORK, 0);
break;
case XFS_DINODE_FMT_DEV: /* fall through */
err = 0;
break;
default:
do_error(_("unknown format %d, ino %" PRIu64 " (mode = %d)\n"),
dino->di_format, lino,
be16_to_cpu(dino->di_mode));
}
if (no_modify && err != 0)
return 1;
ASSERT(err == 0);
}
return 0;
}
/*
* Process extended attribute fork in inode
*/
static int
process_inode_attr_fork(
xfs_mount_t *mp,
xfs_agnumber_t agno,
xfs_agino_t ino,
xfs_dinode_t *dino,
int type,
int *dirty,
xfs_rfsblock_t *atotblocks,
uint64_t *anextents,
int check_dups,
int extra_attr_check,
int *retval)
{
xfs_ino_t lino = XFS_AGINO_TO_INO(mp, agno, ino);
blkmap_t *ablkmap = NULL;
int repair = 0;
int err;
if (!XFS_DFORK_Q(dino)) {
*anextents = 0;
if (dino->di_aformat != XFS_DINODE_FMT_EXTENTS) {
do_warn(_("bad attribute format %d in inode %" PRIu64 ", "),
dino->di_aformat, lino);
if (!no_modify) {
do_warn(_("resetting value\n"));
dino->di_aformat = XFS_DINODE_FMT_EXTENTS;
*dirty = 1;
} else
do_warn(_("would reset value\n"));
}
return 0;
}
*anextents = be16_to_cpu(dino->di_anextents);
if (*anextents > be64_to_cpu(dino->di_nblocks))
*anextents = 1;
switch (dino->di_aformat) {
case XFS_DINODE_FMT_LOCAL:
*anextents = 0;
*atotblocks = 0;
err = process_lclinode(mp, agno, ino, dino, XFS_ATTR_FORK);
break;
case XFS_DINODE_FMT_EXTENTS:
ablkmap = blkmap_alloc(*anextents, XFS_ATTR_FORK);
*anextents = 0;
err = process_exinode(mp, agno, ino, dino, type, dirty,
atotblocks, anextents, &ablkmap,
XFS_ATTR_FORK, check_dups);
break;
case XFS_DINODE_FMT_BTREE:
ablkmap = blkmap_alloc(*anextents, XFS_ATTR_FORK);
*anextents = 0;
err = process_btinode(mp, agno, ino, dino, type, dirty,
atotblocks, anextents, &ablkmap,
XFS_ATTR_FORK, check_dups);
break;
default:
do_warn(_("illegal attribute format %d, ino %" PRIu64 "\n"),
dino->di_aformat, lino);
err = 1;
break;
}
if (err) {
/*
* clear the attribute fork if necessary. we can't
* clear the inode because we've already put the
* inode space info into the blockmap.
*
* XXX - put the inode onto the "move it" list and
* log the the attribute scrubbing
*/
do_warn(_("bad attribute fork in inode %" PRIu64), lino);
if (!no_modify) {
do_warn(_(", clearing attr fork\n"));
*dirty += clear_dinode_attr(mp, dino, lino);
dino->di_aformat = XFS_DINODE_FMT_LOCAL;
ASSERT(*dirty > 0);
} else {
do_warn(_(", would clear attr fork\n"));
}
*atotblocks = 0;
*anextents = 0;
blkmap_free(ablkmap);
*retval = 1;
return 0;
}
if (check_dups) {
switch (dino->di_aformat) {
case XFS_DINODE_FMT_LOCAL:
err = process_lclinode(mp, agno, ino, dino,
XFS_ATTR_FORK);
break;
case XFS_DINODE_FMT_EXTENTS:
err = process_exinode(mp, agno, ino, dino,
type, dirty, atotblocks, anextents,
&ablkmap, XFS_ATTR_FORK, 0);
break;
case XFS_DINODE_FMT_BTREE:
err = process_btinode(mp, agno, ino, dino,
type, dirty, atotblocks, anextents,
&ablkmap, XFS_ATTR_FORK, 0);
break;
default:
do_error(_("illegal attribute fmt %d, ino %" PRIu64 "\n"),
dino->di_aformat, lino);
}
if (no_modify && err != 0) {
blkmap_free(ablkmap);
return 1;
}
ASSERT(err == 0);
}
/*
* do attribute semantic-based consistency checks now
*/
/* get this only in phase 3, not in both phase 3 and 4 */
if (extra_attr_check &&
process_attributes(mp, lino, dino, ablkmap, &repair)) {
do_warn(
_("problem with attribute contents in inode %" PRIu64 "\n"),
lino);
if (!repair) {
/* clear attributes if not done already */
if (!no_modify) {
*dirty += clear_dinode_attr(mp, dino, lino);
dino->di_aformat = XFS_DINODE_FMT_LOCAL;
} else {
do_warn(_("would clear attr fork\n"));
}
*atotblocks = 0;
*anextents = 0;
}
else {
*dirty = 1; /* it's been repaired */
}
}
blkmap_free(ablkmap);
return 0;
}
/*
* check nlinks feature, if it's a version 1 inode,
* just leave nlinks alone. even if it's set wrong,
* it'll be reset when read in.
*/
static int
process_check_inode_nlink_version(
xfs_dinode_t *dino,
xfs_ino_t lino)
{
int dirty = 0;
/*
* if it's a version 2 inode, it should have a zero
* onlink field, so clear it.
*/
if (dino->di_version > 1 && dino->di_onlink != 0) {
if (!no_modify) {
do_warn(
_("clearing obsolete nlink field in version 2 inode %" PRIu64 ", was %d, now 0\n"),
lino, be16_to_cpu(dino->di_onlink));
dino->di_onlink = 0;
dirty = 1;
} else {
do_warn(
_("would clear obsolete nlink field in version 2 inode %" PRIu64 ", currently %d\n"),
lino, be16_to_cpu(dino->di_onlink));
}
}
return dirty;
}
/* Check nanoseconds of a timestamp don't exceed 1 second. */
static void
check_nsec(
const char *name,
xfs_ino_t lino,
struct xfs_timestamp *t,
int *dirty)
{
if (be32_to_cpu(t->t_nsec) < 1000000000)
return;
do_warn(
_("Bad %s nsec %u on inode %" PRIu64 ", "), name, be32_to_cpu(t->t_nsec), lino);
if (no_modify) {
do_warn(_("would reset to zero\n"));
} else {
do_warn(_("resetting to zero\n"));
t->t_nsec = 0;
*dirty = 1;
}
}
/*
* returns 0 if the inode is ok, 1 if the inode is corrupt
* check_dups can be set to 1 *only* when called by the
* first pass of the duplicate block checking of phase 4.
* *dirty is set > 0 if the dinode has been altered and
* needs to be written out.
*
* for detailed, info, look at process_dinode() comments.
*/
static int
process_dinode_int(xfs_mount_t *mp,
xfs_dinode_t *dino,
xfs_agnumber_t agno,
xfs_agino_t ino,
int was_free, /* 1 if inode is currently free */
int *dirty, /* out == > 0 if inode is now dirty */
int *used, /* out == 1 if inode is in use */
int verify_mode, /* 1 == verify but don't modify inode */
int uncertain, /* 1 == inode is uncertain */
int ino_discovery, /* 1 == check dirs for unknown inodes */
int check_dups, /* 1 == check if inode claims
* duplicate blocks */
int extra_attr_check, /* 1 == do attribute format and value checks */
int *isa_dir, /* out == 1 if inode is a directory */
xfs_ino_t *parent) /* out -- parent if ino is a dir */
{
xfs_rfsblock_t totblocks = 0;
xfs_rfsblock_t atotblocks = 0;
int di_mode;
int type;
int retval = 0;
uint64_t nextents;
uint64_t anextents;
xfs_ino_t lino;
const int is_free = 0;
const int is_used = 1;
blkmap_t *dblkmap = NULL;
*dirty = *isa_dir = 0;
*used = is_used;
type = XR_INO_UNKNOWN;
lino = XFS_AGINO_TO_INO(mp, agno, ino);
di_mode = be16_to_cpu(dino->di_mode);
/*
* if in verify mode, don't modify the inode.
*
* if correcting, reset stuff that has known values
*
* if in uncertain mode, be silent on errors since we're
* trying to find out if these are inodes as opposed
* to assuming that they are. Just return the appropriate
* return code in that case.
*
* If uncertain is set, verify_mode MUST be set.
*/
ASSERT(uncertain == 0 || verify_mode != 0);
/*
* This is the only valid point to check the CRC; after this we may have
* made changes which invalidate it, and the CRC is only updated again
* when it gets written out.
*
* Of course if we make any modifications after this, the inode gets
* rewritten, and the CRC is updated automagically.
*/
if (xfs_sb_version_hascrc(&mp->m_sb) &&
!libxfs_verify_cksum((char *)dino, mp->m_sb.sb_inodesize,
XFS_DINODE_CRC_OFF)) {
retval = 1;
if (!uncertain)
do_warn(_("bad CRC for inode %" PRIu64 "%c"),
lino, verify_mode ? '\n' : ',');
if (!verify_mode) {
if (!no_modify) {
do_warn(_(" will rewrite\n"));
*dirty = 1;
} else
do_warn(_(" would rewrite\n"));
}
}
if (be16_to_cpu(dino->di_magic) != XFS_DINODE_MAGIC) {
retval = 1;
if (!uncertain)
do_warn(_("bad magic number 0x%x on inode %" PRIu64 "%c"),
be16_to_cpu(dino->di_magic), lino,
verify_mode ? '\n' : ',');
if (!verify_mode) {
if (!no_modify) {
do_warn(_(" resetting magic number\n"));
dino->di_magic = cpu_to_be16(XFS_DINODE_MAGIC);
*dirty = 1;
} else
do_warn(_(" would reset magic number\n"));
}
}
if (!libxfs_dinode_good_version(mp, dino->di_version)) {
retval = 1;
if (!uncertain)
do_warn(_("bad version number 0x%x on inode %" PRIu64 "%c"),
(__s8)dino->di_version, lino,
verify_mode ? '\n' : ',');
if (!verify_mode) {
if (!no_modify) {
do_warn(_(" resetting version number\n"));
dino->di_version =
xfs_sb_version_hascrc(&mp->m_sb) ? 3 : 2;
*dirty = 1;
} else
do_warn(_(" would reset version number\n"));
}
}
/*
* We don't bother checking the CRC here - we cannot guarantee that when
* we are called here that the inode has not already been modified in
* memory and hence invalidated the CRC.
*/
if (xfs_sb_version_hascrc(&mp->m_sb)) {
if (be64_to_cpu(dino->di_ino) != lino) {
if (!uncertain)
do_warn(
_("inode identifier %llu mismatch on inode %" PRIu64 "\n"),
(unsigned long long)be64_to_cpu(dino->di_ino),
lino);
if (verify_mode)
return 1;
goto clear_bad_out;
}
if (platform_uuid_compare(&dino->di_uuid,
&mp->m_sb.sb_meta_uuid)) {
if (!uncertain)
do_warn(
_("UUID mismatch on inode %" PRIu64 "\n"), lino);
if (verify_mode)
return 1;
goto clear_bad_out;
}
}
/*
* blow out of here if the inode size is < 0
*/
if ((xfs_fsize_t)be64_to_cpu(dino->di_size) < 0) {
if (!uncertain)
do_warn(
_("bad (negative) size %" PRId64 " on inode %" PRIu64 "\n"),
(int64_t)be64_to_cpu(dino->di_size),
lino);
if (verify_mode)
return 1;
goto clear_bad_out;
}
/*
* if not in verify mode, check to sii if the inode and imap
* agree that the inode is free
*/
if (!verify_mode && di_mode == 0) {
/*
* was_free value is not meaningful if we're in verify mode
*/
if (was_free) {
/*
* easy case, inode free -- inode and map agree, clear
* it just in case to ensure that format, etc. are
* set correctly
*/
if (!no_modify)
*dirty += clear_dinode(mp, dino, lino);
*used = is_free;
return 0;
}
/*
* the inode looks free but the map says it's in use.
* clear the inode just to be safe and mark the inode
* free.
*/
do_warn(
_("imap claims a free inode %" PRIu64 " is in use, "), lino);
if (!no_modify) {
do_warn(_("correcting imap and clearing inode\n"));
*dirty += clear_dinode(mp, dino, lino);
retval = 1;
} else
do_warn(_("would correct imap and clear inode\n"));
*used = is_free;
return retval;
}
/*
* because of the lack of any write ordering guarantee, it's
* possible that the core got updated but the forks didn't.
* so rather than be ambitious (and probably incorrect),
* if there's an inconsistency, we get conservative and
* just pitch the file. blow off checking formats of
* free inodes since technically any format is legal
* as we reset the inode when we re-use it.
*/
if (di_mode != 0 && check_dinode_mode_format(dino) != 0) {
if (!uncertain)
do_warn(
_("bad inode format in inode %" PRIu64 "\n"), lino);
if (verify_mode)
return 1;
goto clear_bad_out;
}
/*
* check that we only have valid flags set, and those that are set make
* sense.
*/
if (dino->di_flags) {
uint16_t flags = be16_to_cpu(dino->di_flags);
if (flags & ~XFS_DIFLAG_ANY) {
if (!uncertain) {
do_warn(
_("Bad flags set in inode %" PRIu64 "\n"),
lino);
}
flags &= XFS_DIFLAG_ANY;
}
if (flags & (XFS_DIFLAG_REALTIME | XFS_DIFLAG_RTINHERIT)) {
/* need an rt-dev! */
if (!rt_name) {
if (!uncertain) {
do_warn(
_("inode %" PRIu64 " has RT flag set but there is no RT device\n"),
lino);
}
flags &= ~(XFS_DIFLAG_REALTIME |
XFS_DIFLAG_RTINHERIT);
}
}
if (flags & XFS_DIFLAG_NEWRTBM) {
/* must be a rt bitmap inode */
if (lino != mp->m_sb.sb_rbmino) {
if (!uncertain) {
do_warn(
_("inode %" PRIu64 " not rt bitmap\n"),
lino);
}
flags &= ~XFS_DIFLAG_NEWRTBM;
}
}
if (flags & (XFS_DIFLAG_RTINHERIT |
XFS_DIFLAG_EXTSZINHERIT |
XFS_DIFLAG_PROJINHERIT |
XFS_DIFLAG_NOSYMLINKS)) {
/* must be a directory */
if (di_mode && !S_ISDIR(di_mode)) {
if (!uncertain) {
do_warn(
_("directory flags set on non-directory inode %" PRIu64 "\n" ),
lino);
}
flags &= ~(XFS_DIFLAG_RTINHERIT |
XFS_DIFLAG_EXTSZINHERIT |
XFS_DIFLAG_PROJINHERIT |
XFS_DIFLAG_NOSYMLINKS);
}
}
if (flags & (XFS_DIFLAG_REALTIME | FS_XFLAG_EXTSIZE)) {
/* must be a file */
if (di_mode && !S_ISREG(di_mode)) {
if (!uncertain) {
do_warn(
_("file flags set on non-file inode %" PRIu64 "\n"),
lino);
}
flags &= ~(XFS_DIFLAG_REALTIME |
FS_XFLAG_EXTSIZE);
}
}
if (!verify_mode && flags != be16_to_cpu(dino->di_flags)) {
if (!no_modify) {
do_warn(_("fixing bad flags.\n"));
dino->di_flags = cpu_to_be16(flags);
*dirty = 1;
} else
do_warn(_("would fix bad flags.\n"));
}
}
/*
* check that we only have valid flags2 set, and those that are set make
* sense.
*/
if (dino->di_version >= 3) {
uint16_t flags = be16_to_cpu(dino->di_flags);
uint64_t flags2 = be64_to_cpu(dino->di_flags2);
if (flags2 & ~XFS_DIFLAG2_ANY) {
if (!uncertain) {
do_warn(
_("Bad flags2 set in inode %" PRIu64 "\n"),
lino);
}
flags2 &= XFS_DIFLAG2_ANY;
}
if (flags2 & XFS_DIFLAG2_DAX) {
/* must be a file or dir */
if (di_mode && !(S_ISREG(di_mode) || S_ISDIR(di_mode))) {
if (!uncertain) {
do_warn(
_("DAX flag set on special inode %" PRIu64 "\n"),
lino);
}
flags2 &= ~XFS_DIFLAG2_DAX;
}
}
if ((flags2 & XFS_DIFLAG2_REFLINK) &&
!xfs_sb_version_hasreflink(&mp->m_sb)) {
if (!uncertain) {
do_warn(
_("inode %" PRIu64 " is marked reflinked but file system does not support reflink\n"),
lino);
}
goto clear_bad_out;
}
if (flags2 & XFS_DIFLAG2_REFLINK) {
/* must be a file */
if (di_mode && !S_ISREG(di_mode)) {
if (!uncertain) {
do_warn(
_("reflink flag set on non-file inode %" PRIu64 "\n"),
lino);
}
goto clear_bad_out;
}
}
if ((flags2 & XFS_DIFLAG2_REFLINK) &&
(flags & (XFS_DIFLAG_REALTIME | XFS_DIFLAG_RTINHERIT))) {
if (!uncertain) {
do_warn(
_("Cannot have a reflinked realtime inode %" PRIu64 "\n"),
lino);
}
goto clear_bad_out;
}
if ((flags2 & XFS_DIFLAG2_COWEXTSIZE) &&
!xfs_sb_version_hasreflink(&mp->m_sb)) {
if (!uncertain) {
do_warn(
_("inode %" PRIu64 " has CoW extent size hint but file system does not support reflink\n"),
lino);
}
flags2 &= ~XFS_DIFLAG2_COWEXTSIZE;
}
if (flags2 & XFS_DIFLAG2_COWEXTSIZE) {
/* must be a directory or file */
if (di_mode && !S_ISDIR(di_mode) && !S_ISREG(di_mode)) {
if (!uncertain) {
do_warn(
_("CoW extent size flag set on non-file, non-directory inode %" PRIu64 "\n" ),
lino);
}
flags2 &= ~XFS_DIFLAG2_COWEXTSIZE;
}
}
if ((flags2 & XFS_DIFLAG2_COWEXTSIZE) &&
(flags & (XFS_DIFLAG_REALTIME | XFS_DIFLAG_RTINHERIT))) {
if (!uncertain) {
do_warn(
_("Cannot have CoW extent size hint on a realtime inode %" PRIu64 "\n"),
lino);
}
flags2 &= ~XFS_DIFLAG2_COWEXTSIZE;
}
if (!verify_mode && flags2 != be64_to_cpu(dino->di_flags2)) {
if (!no_modify) {
do_warn(_("fixing bad flags2.\n"));
dino->di_flags2 = cpu_to_be64(flags2);
*dirty = 1;
} else
do_warn(_("would fix bad flags2.\n"));
}
}
if (verify_mode)
return retval;
/*
* clear the next unlinked field if necessary on a good
* inode only during phase 4 -- when checking for inodes
* referencing duplicate blocks. then it's safe because
* we've done the inode discovery and have found all the inodes
* we're going to find. check_dups is set to 1 only during
* phase 4. Ugly.
*/
if (check_dups && !no_modify)
*dirty += clear_dinode_unlinked(mp, dino);
/* set type and map type info */
switch (di_mode & S_IFMT) {
case S_IFDIR:
type = XR_INO_DIR;
*isa_dir = 1;
break;
case S_IFREG:
if (be16_to_cpu(dino->di_flags) & XFS_DIFLAG_REALTIME)
type = XR_INO_RTDATA;
else if (lino == mp->m_sb.sb_rbmino)
type = XR_INO_RTBITMAP;
else if (lino == mp->m_sb.sb_rsumino)
type = XR_INO_RTSUM;
else if (lino == mp->m_sb.sb_uquotino)
type = XR_INO_UQUOTA;
else if (lino == mp->m_sb.sb_gquotino)
type = XR_INO_GQUOTA;
else if (lino == mp->m_sb.sb_pquotino)
type = XR_INO_PQUOTA;
else
type = XR_INO_DATA;
break;
case S_IFLNK:
type = XR_INO_SYMLINK;
break;
case S_IFCHR:
type = XR_INO_CHRDEV;
break;
case S_IFBLK:
type = XR_INO_BLKDEV;
break;
case S_IFSOCK:
type = XR_INO_SOCK;
break;
case S_IFIFO:
type = XR_INO_FIFO;
break;
default:
do_warn(_("bad inode type %#o inode %" PRIu64 "\n"),
di_mode & S_IFMT, lino);
goto clear_bad_out;
}
/*
* type checks for superblock inodes
*/
if (process_check_sb_inodes(mp, dino, lino, &type, dirty) != 0)
goto clear_bad_out;
/*
* only regular files with REALTIME or EXTSIZE flags set can have
* extsize set, or directories with EXTSZINHERIT.
*/
if (be32_to_cpu(dino->di_extsize) != 0) {
if ((type == XR_INO_RTDATA) ||
(type == XR_INO_DIR && (be16_to_cpu(dino->di_flags) &
XFS_DIFLAG_EXTSZINHERIT)) ||
(type == XR_INO_DATA && (be16_to_cpu(dino->di_flags) &
XFS_DIFLAG_EXTSIZE))) {
/* s'okay */ ;
} else {
do_warn(
_("bad non-zero extent size %u for non-realtime/extsize inode %" PRIu64 ", "),
be32_to_cpu(dino->di_extsize), lino);
if (!no_modify) {
do_warn(_("resetting to zero\n"));
dino->di_extsize = 0;
*dirty = 1;
} else
do_warn(_("would reset to zero\n"));
}
}
/*
* Only (regular files and directories) with COWEXTSIZE flags
* set can have extsize set.
*/
if (dino->di_version >= 3 &&
be32_to_cpu(dino->di_cowextsize) != 0) {
if ((type == XR_INO_DIR || type == XR_INO_DATA) &&
(be64_to_cpu(dino->di_flags2) &
XFS_DIFLAG2_COWEXTSIZE)) {
/* s'okay */ ;
} else {
do_warn(
_("Cannot have non-zero CoW extent size %u on non-cowextsize inode %" PRIu64 ", "),
be32_to_cpu(dino->di_cowextsize), lino);
if (!no_modify) {
do_warn(_("resetting to zero\n"));
dino->di_flags2 &= ~cpu_to_be64(XFS_DIFLAG2_COWEXTSIZE);
dino->di_cowextsize = 0;
*dirty = 1;
} else
do_warn(_("would reset to zero\n"));
}
}
/*
* Can't have the COWEXTSIZE flag set with no hint.
*/
if (dino->di_version >= 3 &&
be32_to_cpu(dino->di_cowextsize) == 0 &&
(be64_to_cpu(dino->di_flags2) & XFS_DIFLAG2_COWEXTSIZE)) {
do_warn(
_("Cannot have CoW extent size of zero on cowextsize inode %" PRIu64 ", "),
lino);
if (!no_modify) {
do_warn(_("clearing cowextsize flag\n"));
dino->di_flags2 &= ~cpu_to_be64(XFS_DIFLAG2_COWEXTSIZE);
*dirty = 1;
} else {
do_warn(_("would clear cowextsize flag\n"));
}
}
/* nsec fields cannot be larger than 1 billion */
check_nsec("atime", lino, &dino->di_atime, dirty);
check_nsec("mtime", lino, &dino->di_mtime, dirty);
check_nsec("ctime", lino, &dino->di_ctime, dirty);
if (dino->di_version >= 3)
check_nsec("crtime", lino, &dino->di_crtime, dirty);
/*
* general size/consistency checks:
*/
if (process_check_inode_sizes(mp, dino, lino, type) != 0)
goto clear_bad_out;
/*
* check for illegal values of forkoff
*/
if (process_check_inode_forkoff(mp, dino, lino) != 0)
goto clear_bad_out;
/*
* record the state of the reflink flag
*/
if (collect_rmaps)
record_inode_reflink_flag(mp, dino, agno, ino, lino);
/*
* check data fork -- if it's bad, clear the inode
*/
if (process_inode_data_fork(mp, agno, ino, dino, type, dirty,
&totblocks, &nextents, &dblkmap, check_dups) != 0)
goto bad_out;
/*
* check attribute fork if necessary. attributes are
* always stored in the regular filesystem.
*/
if (process_inode_attr_fork(mp, agno, ino, dino, type, dirty,
&atotblocks, &anextents, check_dups, extra_attr_check,
&retval))
goto bad_out;
/*
* enforce totblocks is 0 for misc types
*/
if (process_misc_ino_types_blocks(totblocks, lino, type))
goto clear_bad_out;
/*
* correct space counters if required
*/
if (process_inode_blocks_and_extents(dino, totblocks + atotblocks,
nextents, anextents, lino, dirty) != 0)
goto clear_bad_out;
/*
* do any semantic type-based checking here
*/
switch (type) {
case XR_INO_DIR:
if (process_dir2(mp, lino, dino, ino_discovery,
dirty, "", parent, dblkmap)) {
do_warn(
_("problem with directory contents in inode %" PRIu64 "\n"),
lino);
goto clear_bad_out;
}
break;
case XR_INO_SYMLINK:
if (process_symlink(mp, lino, dino, dblkmap) != 0) {
do_warn(
_("problem with symbolic link in inode %" PRIu64 "\n"),
lino);
goto clear_bad_out;
}
break;
case XR_INO_UQUOTA:
case XR_INO_GQUOTA:
case XR_INO_PQUOTA:
if (process_quota_inode(mp, lino, dino, type, dblkmap) != 0) {
do_warn(
_("problem with quota inode %" PRIu64 "\n"), lino);
goto clear_bad_out;
}
break;
default:
break;
}
blkmap_free(dblkmap);
/*
* check nlinks feature, if it's a version 1 inode,
* just leave nlinks alone. even if it's set wrong,
* it'll be reset when read in.
*/
*dirty += process_check_inode_nlink_version(dino, lino);
return retval;
clear_bad_out:
if (!no_modify) {
*dirty += clear_dinode(mp, dino, lino);
ASSERT(*dirty > 0);
}
bad_out:
*used = is_free;
*isa_dir = 0;
blkmap_free(dblkmap);
return 1;
}
/*
* returns 1 if inode is used, 0 if free.
* performs any necessary salvaging actions.
* note that we leave the generation count alone
* because nothing we could set it to would be
* guaranteed to be correct so the best guess for
* the correct value is just to leave it alone.
*
* The trick is detecting empty files. For those,
* the core and the forks should all be in the "empty"
* or zero-length state -- a zero or possibly minimum length
* (in the case of dirs) extent list -- although inline directories
* and symlinks might be handled differently. So it should be
* possible to sanity check them against each other.
*
* If the forks are an empty extent list though, then forget it.
* The file is toast anyway since we can't recover its storage.
*
* Parameters:
* Ins:
* mp -- mount structure
* dino -- pointer to on-disk inode structure
* agno/ino -- inode numbers
* free -- whether the map thinks the inode is free (1 == free)
* ino_discovery -- whether we should examine directory
* contents to discover new inodes
* check_dups -- whether we should check to see if the
* inode references duplicate blocks
* if so, we compare the inode's claimed
* blocks against the contents of the
* duplicate extent list but we don't
* set the bitmap. If not, we set the
* bitmap and try and detect multiply
* claimed blocks using the bitmap.
* Outs:
* dirty -- whether we changed the inode (1 == yes)
* used -- 1 if the inode is used, 0 if free. In no modify
* mode, whether the inode should be used or free
* isa_dir -- 1 if the inode is a directory, 0 if not. In
* no modify mode, if the inode would be a dir or not.
*
* Return value -- 0 if the inode is good, 1 if it is/was corrupt
*/
int
process_dinode(
xfs_mount_t *mp,
xfs_dinode_t *dino,
xfs_agnumber_t agno,
xfs_agino_t ino,
int was_free,
int *dirty,
int *used,
int ino_discovery,
int check_dups,
int extra_attr_check,
int *isa_dir,
xfs_ino_t *parent)
{
const int verify_mode = 0;
const int uncertain = 0;
#ifdef XR_INODE_TRACE
fprintf(stderr, _("processing inode %d/%d\n"), agno, ino);
#endif
return process_dinode_int(mp, dino, agno, ino, was_free, dirty, used,
verify_mode, uncertain, ino_discovery,
check_dups, extra_attr_check, isa_dir, parent);
}
/*
* a more cursory check, check inode core, *DON'T* check forks
* this basically just verifies whether the inode is an inode
* and whether or not it has been totally trashed. returns 0
* if the inode passes the cursory sanity check, 1 otherwise.
*/
int
verify_dinode(
xfs_mount_t *mp,
xfs_dinode_t *dino,
xfs_agnumber_t agno,
xfs_agino_t ino)
{
xfs_ino_t parent;
int used = 0;
int dirty = 0;
int isa_dir = 0;
const int verify_mode = 1;
const int check_dups = 0;
const int ino_discovery = 0;
const int uncertain = 0;
return process_dinode_int(mp, dino, agno, ino, 0, &dirty, &used,
verify_mode, uncertain, ino_discovery,
check_dups, 0, &isa_dir, &parent);
}
/*
* like above only for inode on the uncertain list. it sets
* the uncertain flag which makes process_dinode_int quieter.
* returns 0 if the inode passes the cursory sanity check, 1 otherwise.
*/
int
verify_uncertain_dinode(
xfs_mount_t *mp,
xfs_dinode_t *dino,
xfs_agnumber_t agno,
xfs_agino_t ino)
{
xfs_ino_t parent;
int used = 0;
int dirty = 0;
int isa_dir = 0;
const int verify_mode = 1;
const int check_dups = 0;
const int ino_discovery = 0;
const int uncertain = 1;
return process_dinode_int(mp, dino, agno, ino, 0, &dirty, &used,
verify_mode, uncertain, ino_discovery,
check_dups, 0, &isa_dir, &parent);
}