linux/fs/xfs/xfs_error.c
Dave Chinner a2050646f6 xfs: increase hexdump output in xfs_corruption_error
Currently xfs_corruption_error() dumps the first 16 bytes of the
buffer that is passed to it when a corruption occurs. This is not
large enough to see the entire state of the header of the block that
was determined to be corrupt.  increase the output to 64 bytes to
capture the majority of all headers in all types of metadata blocks.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
2013-04-21 14:48:41 -05:00

185 lines
4.0 KiB
C

/*
* Copyright (c) 2000-2001,2005 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 "xfs.h"
#include "xfs_fs.h"
#include "xfs_types.h"
#include "xfs_log.h"
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
#include "xfs_mount.h"
#include "xfs_bmap_btree.h"
#include "xfs_dinode.h"
#include "xfs_inode.h"
#include "xfs_utils.h"
#include "xfs_error.h"
#ifdef DEBUG
int xfs_etrap[XFS_ERROR_NTRAP] = {
0,
};
int
xfs_error_trap(int e)
{
int i;
if (!e)
return 0;
for (i = 0; i < XFS_ERROR_NTRAP; i++) {
if (xfs_etrap[i] == 0)
break;
if (e != xfs_etrap[i])
continue;
xfs_notice(NULL, "%s: error %d", __func__, e);
BUG();
break;
}
return e;
}
int xfs_etest[XFS_NUM_INJECT_ERROR];
int64_t xfs_etest_fsid[XFS_NUM_INJECT_ERROR];
char * xfs_etest_fsname[XFS_NUM_INJECT_ERROR];
int xfs_error_test_active;
int
xfs_error_test(int error_tag, int *fsidp, char *expression,
int line, char *file, unsigned long randfactor)
{
int i;
int64_t fsid;
if (prandom_u32() % randfactor)
return 0;
memcpy(&fsid, fsidp, sizeof(xfs_fsid_t));
for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
if (xfs_etest[i] == error_tag && xfs_etest_fsid[i] == fsid) {
xfs_warn(NULL,
"Injecting error (%s) at file %s, line %d, on filesystem \"%s\"",
expression, file, line, xfs_etest_fsname[i]);
return 1;
}
}
return 0;
}
int
xfs_errortag_add(int error_tag, xfs_mount_t *mp)
{
int i;
int len;
int64_t fsid;
memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
if (xfs_etest_fsid[i] == fsid && xfs_etest[i] == error_tag) {
xfs_warn(mp, "error tag #%d on", error_tag);
return 0;
}
}
for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
if (xfs_etest[i] == 0) {
xfs_warn(mp, "Turned on XFS error tag #%d",
error_tag);
xfs_etest[i] = error_tag;
xfs_etest_fsid[i] = fsid;
len = strlen(mp->m_fsname);
xfs_etest_fsname[i] = kmem_alloc(len + 1, KM_SLEEP);
strcpy(xfs_etest_fsname[i], mp->m_fsname);
xfs_error_test_active++;
return 0;
}
}
xfs_warn(mp, "error tag overflow, too many turned on");
return 1;
}
int
xfs_errortag_clearall(xfs_mount_t *mp, int loud)
{
int64_t fsid;
int cleared = 0;
int i;
memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
if ((fsid == 0LL || xfs_etest_fsid[i] == fsid) &&
xfs_etest[i] != 0) {
cleared = 1;
xfs_warn(mp, "Clearing XFS error tag #%d",
xfs_etest[i]);
xfs_etest[i] = 0;
xfs_etest_fsid[i] = 0LL;
kmem_free(xfs_etest_fsname[i]);
xfs_etest_fsname[i] = NULL;
xfs_error_test_active--;
}
}
if (loud || cleared)
xfs_warn(mp, "Cleared all XFS error tags for filesystem");
return 0;
}
#endif /* DEBUG */
void
xfs_error_report(
const char *tag,
int level,
struct xfs_mount *mp,
const char *filename,
int linenum,
inst_t *ra)
{
if (level <= xfs_error_level) {
xfs_alert_tag(mp, XFS_PTAG_ERROR_REPORT,
"Internal error %s at line %d of file %s. Caller 0x%p\n",
tag, linenum, filename, ra);
xfs_stack_trace();
}
}
void
xfs_corruption_error(
const char *tag,
int level,
struct xfs_mount *mp,
void *p,
const char *filename,
int linenum,
inst_t *ra)
{
if (level <= xfs_error_level)
xfs_hex_dump(p, 64);
xfs_error_report(tag, level, mp, filename, linenum, ra);
xfs_alert(mp, "Corruption detected. Unmount and run xfs_repair");
}