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/*
* 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_format.h"
#include "xfs_fs.h"
#include "xfs_log_format.h"
#include "xfs_trans_resv.h"
#include "xfs_mount.h"
#include "xfs_error.h"
#ifdef DEBUG
static unsigned int xfs_errortag_random_default[] = {
XFS_RANDOM_DEFAULT,
XFS_RANDOM_IFLUSH_1,
XFS_RANDOM_IFLUSH_2,
XFS_RANDOM_IFLUSH_3,
XFS_RANDOM_IFLUSH_4,
XFS_RANDOM_IFLUSH_5,
XFS_RANDOM_IFLUSH_6,
XFS_RANDOM_DA_READ_BUF,
XFS_RANDOM_BTREE_CHECK_LBLOCK,
XFS_RANDOM_BTREE_CHECK_SBLOCK,
XFS_RANDOM_ALLOC_READ_AGF,
XFS_RANDOM_IALLOC_READ_AGI,
XFS_RANDOM_ITOBP_INOTOBP,
XFS_RANDOM_IUNLINK,
XFS_RANDOM_IUNLINK_REMOVE,
XFS_RANDOM_DIR_INO_VALIDATE,
XFS_RANDOM_BULKSTAT_READ_CHUNK,
XFS_RANDOM_IODONE_IOERR,
XFS_RANDOM_STRATREAD_IOERR,
XFS_RANDOM_STRATCMPL_IOERR,
XFS_RANDOM_DIOWRITE_IOERR,
XFS_RANDOM_BMAPIFORMAT,
XFS_RANDOM_FREE_EXTENT,
XFS_RANDOM_RMAP_FINISH_ONE,
XFS_RANDOM_REFCOUNT_CONTINUE_UPDATE,
XFS_RANDOM_REFCOUNT_FINISH_ONE,
XFS_RANDOM_BMAP_FINISH_ONE,
XFS_RANDOM_AG_RESV_CRITICAL,
};
int
xfs_errortag_init(
struct xfs_mount *mp)
{
mp->m_errortag = kmem_zalloc(sizeof(unsigned int) * XFS_ERRTAG_MAX,
KM_SLEEP | KM_MAYFAIL);
if (!mp->m_errortag)
return -ENOMEM;
return 0;
}
void
xfs_errortag_del(
struct xfs_mount *mp)
{
kmem_free(mp->m_errortag);
}
bool
xfs_errortag_test(
struct xfs_mount *mp,
const char *expression,
const char *file,
int line,
unsigned int error_tag)
{
unsigned int randfactor;
ASSERT(error_tag < XFS_ERRTAG_MAX);
randfactor = mp->m_errortag[error_tag];
if (!randfactor || prandom_u32() % randfactor)
return false;
xfs_warn_ratelimited(mp,
"Injecting error (%s) at file %s, line %d, on filesystem \"%s\"",
expression, file, line, mp->m_fsname);
return true;
}
int
xfs_errortag_set(
struct xfs_mount *mp,
unsigned int error_tag,
unsigned int tag_value)
{
if (error_tag >= XFS_ERRTAG_MAX)
return -EINVAL;
mp->m_errortag[error_tag] = tag_value;
return 0;
}
int
xfs_errortag_add(
struct xfs_mount *mp,
unsigned int error_tag)
{
if (error_tag >= XFS_ERRTAG_MAX)
return -EINVAL;
return xfs_errortag_set(mp, error_tag,
xfs_errortag_random_default[error_tag]);
}
int
xfs_errortag_clearall(
struct xfs_mount *mp)
{
memset(mp->m_errortag, 0, sizeof(unsigned int) * XFS_ERRTAG_MAX);
return 0;
}
#endif /* DEBUG */
void
xfs_error_report(
const char *tag,
int level,
struct xfs_mount *mp,
const char *filename,
int linenum,
void *ra)
{
if (level <= xfs_error_level) {
xfs_alert_tag(mp, XFS_PTAG_ERROR_REPORT,
"Internal error %s at line %d of file %s. Caller %pS",
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,
void *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");
}
/*
* Warnings specifically for verifier errors. Differentiate CRC vs. invalid
* values, and omit the stack trace unless the error level is tuned high.
*/
void
xfs_verifier_error(
struct xfs_buf *bp)
{
struct xfs_mount *mp = bp->b_target->bt_mount;
xfs_alert(mp, "Metadata %s detected at %pF, %s block 0x%llx",
bp->b_error == -EFSBADCRC ? "CRC error" : "corruption",
__return_address, bp->b_ops->name, bp->b_bn);
xfs_alert(mp, "Unmount and run xfs_repair");
if (xfs_error_level >= XFS_ERRLEVEL_LOW) {
xfs_alert(mp, "First 64 bytes of corrupted metadata buffer:");
xfs_hex_dump(xfs_buf_offset(bp, 0), 64);
}
if (xfs_error_level >= XFS_ERRLEVEL_HIGH)
xfs_stack_trace();
}
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