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/*
* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 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.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
*/
#include <xfs.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);
debug_stop_all_cpus((void *)-1LL);
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)
{
bzero(xfs_etest, sizeof(xfs_etest));
bzero(xfs_etest_fsid, sizeof(xfs_etest_fsid));
bzero(xfs_etest_fsname, 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;
bcopy(fsidp, &fsid, sizeof(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\"\n",
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;
bcopy(mp->m_fixedfsid, &fsid, sizeof(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;
bcopy(mp->m_fixedfsid, &fsid, sizeof(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;
bcopy(mp->m_fixedfsid, &fsid, sizeof(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)
{
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);
}
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(uint64_t panic_tag, int level, xfs_mount_t *mp, char *fmt, ...)
{
va_list ap;
if (xfs_panic_mask && (xfs_panic_mask & panic_tag)
&& (level & CE_ALERT)) {
level &= ~CE_ALERT;
level |= CE_PANIC;
cmn_err(CE_ALERT, "Transforming an alert into a panic.");
}
va_start(ap, fmt);
xfs_fs_vcmn_err(level, mp, fmt, ap);
va_end(ap);
}
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