/*
* 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_inum.h"
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_dir.h"
#include "xfs_dir2.h"
#include "xfs_dmapi.h"
#include "xfs_mount.h"
#include "xfs_bmap_btree.h"
#include "xfs_dir_sf.h"
#include "xfs_dir2_sf.h"
#include "xfs_attr_sf.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;
cmn_err(CE_NOTE, "xfs_error_trap: error %d", e);
BUG();
break;
}
return e;
}
#endif
#if (defined(DEBUG) || defined(INDUCE_IO_ERROR))
int xfs_etest[XFS_NUM_INJECT_ERROR];
int64_t xfs_etest_fsid[XFS_NUM_INJECT_ERROR];
char * xfs_etest_fsname[XFS_NUM_INJECT_ERROR];
void
xfs_error_test_init(void)
{
memset(xfs_etest, 0, sizeof(xfs_etest));
memset(xfs_etest_fsid, 0, sizeof(xfs_etest_fsid));
memset(xfs_etest_fsname, 0, sizeof(xfs_etest_fsname));
}
int
xfs_error_test(int error_tag, int *fsidp, char *expression,
int line, char *file, unsigned long randfactor)
{
int i;
int64_t fsid;
if (random() % 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) {
cmn_err(CE_WARN,
"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) {
cmn_err(CE_WARN, "XFS error tag #%d on", error_tag);
return 0;
}
}
for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
if (xfs_etest[i] == 0) {
cmn_err(CE_WARN, "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);
return 0;
}
}
cmn_err(CE_WARN, "error tag overflow, too many turned on");
return 1;
}
int
xfs_errortag_clear(int error_tag, xfs_mount_t *mp)
{
int i;
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_etest[i] = 0;
xfs_etest_fsid[i] = 0LL;
kmem_free(xfs_etest_fsname[i],
strlen(xfs_etest_fsname[i]) + 1);
xfs_etest_fsname[i] = NULL;
cmn_err(CE_WARN, "Cleared XFS error tag #%d",
error_tag);
return 0;
}
}
cmn_err(CE_WARN, "XFS error tag %d not on", error_tag);
return 1;
}
int
xfs_errortag_clearall_umount(int64_t fsid, char *fsname, int loud)
{
int i;
int cleared = 0;
for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
if ((fsid == 0LL || xfs_etest_fsid[i] == fsid) &&
xfs_etest[i] != 0) {
cleared = 1;
cmn_err(CE_WARN, "Clearing XFS error tag #%d",
xfs_etest[i]);
xfs_etest[i] = 0;
xfs_etest_fsid[i] = 0LL;
kmem_free(xfs_etest_fsname[i],
strlen(xfs_etest_fsname[i]) + 1);
xfs_etest_fsname[i] = NULL;
}
}
if (loud || cleared)
cmn_err(CE_WARN,
"Cleared all XFS error tags for filesystem \"%s\"",
fsname);
return 0;
}
int
xfs_errortag_clearall(xfs_mount_t *mp)
{
int64_t fsid;
memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
return xfs_errortag_clearall_umount(fsid, mp->m_fsname, 1);
}
#endif /* DEBUG || INDUCE_IO_ERROR */
static void
xfs_fs_vcmn_err(int level, xfs_mount_t *mp, char *fmt, va_list ap)
{
if (mp != NULL) {
char *newfmt;
int len = 16 + mp->m_fsname_len + strlen(fmt);
newfmt = kmem_alloc(len, KM_SLEEP);
sprintf(newfmt, "Filesystem \"%s\": %s", mp->m_fsname, fmt);
icmn_err(level, newfmt, ap);
kmem_free(newfmt, len);
} else {
icmn_err(level, fmt, ap);
}
}
void
xfs_fs_cmn_err(int level, xfs_mount_t *mp, char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
xfs_fs_vcmn_err(level, mp, fmt, ap);
va_end(ap);
}
void
xfs_cmn_err(int panic_tag, int level, xfs_mount_t *mp, char *fmt, ...)
{
va_list ap;
#ifdef DEBUG
xfs_panic_mask |= XFS_PTAG_SHUTDOWN_CORRUPT;
#endif
if (xfs_panic_mask && (xfs_panic_mask & panic_tag)
&& (level & CE_ALERT)) {
level &= ~CE_ALERT;
level |= CE_PANIC;
cmn_err(CE_ALERT, "XFS: Transforming an alert into a BUG.");
}
va_start(ap, fmt);
xfs_fs_vcmn_err(level, mp, fmt, ap);
va_end(ap);
}
void
xfs_error_report(
char *tag,
int level,
xfs_mount_t *mp,
char *fname,
int linenum,
inst_t *ra)
{
if (level <= xfs_error_level) {
xfs_cmn_err(XFS_PTAG_ERROR_REPORT,
CE_ALERT, mp,
"XFS internal error %s at line %d of file %s. Caller 0x%p\n",
tag, linenum, fname, ra);
xfs_stack_trace();
}
}
STATIC void
xfs_hex_dump(void *p, int length)
{
__uint8_t *uip = (__uint8_t*)p;
int i;
char sbuf[128], *s;
s = sbuf;
*s = '\0';
for (i=0; i<length; i++, uip++) {
if ((i % 16) == 0) {
if (*s != '\0')
cmn_err(CE_ALERT, "%s\n", sbuf);
s = sbuf;
sprintf(s, "0x%x: ", i);
while( *s != '\0')
s++;
}
sprintf(s, "%02x ", *uip);
/*
* the kernel sprintf is a void; user sprintf returns
* the sprintf'ed string's length. Find the new end-
* of-string
*/
while( *s != '\0')
s++;
}
cmn_err(CE_ALERT, "%s\n", sbuf);
}
void
xfs_corruption_error(
char *tag,
int level,
xfs_mount_t *mp,
void *p,
char *fname,
int linenum,
inst_t *ra)
{
if (level <= xfs_error_level)
xfs_hex_dump(p, 16);
xfs_error_report(tag, level, mp, fname, linenum, ra);
}
