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183 lines
4.3 KiB
C
183 lines
4.3 KiB
C
/*
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* Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "xfs.h"
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#include "xfs_format.h"
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#include "xfs_fs.h"
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#include "xfs_log_format.h"
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#include "xfs_trans_resv.h"
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#include "xfs_mount.h"
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#include "xfs_error.h"
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#ifdef DEBUG
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int xfs_etest[XFS_NUM_INJECT_ERROR];
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int64_t xfs_etest_fsid[XFS_NUM_INJECT_ERROR];
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char * xfs_etest_fsname[XFS_NUM_INJECT_ERROR];
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int xfs_error_test_active;
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int
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xfs_error_test(int error_tag, int *fsidp, char *expression,
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int line, char *file, unsigned long randfactor)
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{
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int i;
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int64_t fsid;
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if (prandom_u32() % randfactor)
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return 0;
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memcpy(&fsid, fsidp, sizeof(xfs_fsid_t));
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for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
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if (xfs_etest[i] == error_tag && xfs_etest_fsid[i] == fsid) {
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xfs_warn(NULL,
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"Injecting error (%s) at file %s, line %d, on filesystem \"%s\"",
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expression, file, line, xfs_etest_fsname[i]);
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return 1;
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}
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}
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return 0;
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}
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int
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xfs_errortag_add(unsigned int error_tag, xfs_mount_t *mp)
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{
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int i;
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int len;
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int64_t fsid;
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if (error_tag >= XFS_ERRTAG_MAX)
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return -EINVAL;
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memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
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for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
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if (xfs_etest_fsid[i] == fsid && xfs_etest[i] == error_tag) {
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xfs_warn(mp, "error tag #%d on", error_tag);
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return 0;
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}
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}
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for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
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if (xfs_etest[i] == 0) {
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xfs_warn(mp, "Turned on XFS error tag #%d",
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error_tag);
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xfs_etest[i] = error_tag;
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xfs_etest_fsid[i] = fsid;
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len = strlen(mp->m_fsname);
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xfs_etest_fsname[i] = kmem_alloc(len + 1, KM_SLEEP);
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strcpy(xfs_etest_fsname[i], mp->m_fsname);
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xfs_error_test_active++;
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return 0;
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}
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}
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xfs_warn(mp, "error tag overflow, too many turned on");
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return 1;
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}
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int
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xfs_errortag_clearall(xfs_mount_t *mp, int loud)
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{
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int64_t fsid;
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int cleared = 0;
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int i;
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memcpy(&fsid, mp->m_fixedfsid, sizeof(xfs_fsid_t));
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for (i = 0; i < XFS_NUM_INJECT_ERROR; i++) {
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if ((fsid == 0LL || xfs_etest_fsid[i] == fsid) &&
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xfs_etest[i] != 0) {
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cleared = 1;
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xfs_warn(mp, "Clearing XFS error tag #%d",
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xfs_etest[i]);
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xfs_etest[i] = 0;
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xfs_etest_fsid[i] = 0LL;
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kmem_free(xfs_etest_fsname[i]);
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xfs_etest_fsname[i] = NULL;
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xfs_error_test_active--;
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}
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}
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if (loud || cleared)
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xfs_warn(mp, "Cleared all XFS error tags for filesystem");
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return 0;
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}
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#endif /* DEBUG */
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void
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xfs_error_report(
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const char *tag,
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int level,
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struct xfs_mount *mp,
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const char *filename,
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int linenum,
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void *ra)
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{
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if (level <= xfs_error_level) {
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xfs_alert_tag(mp, XFS_PTAG_ERROR_REPORT,
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"Internal error %s at line %d of file %s. Caller %pS",
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tag, linenum, filename, ra);
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xfs_stack_trace();
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}
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}
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void
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xfs_corruption_error(
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const char *tag,
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int level,
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struct xfs_mount *mp,
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void *p,
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const char *filename,
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int linenum,
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void *ra)
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{
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if (level <= xfs_error_level)
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xfs_hex_dump(p, 64);
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xfs_error_report(tag, level, mp, filename, linenum, ra);
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xfs_alert(mp, "Corruption detected. Unmount and run xfs_repair");
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}
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/*
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* Warnings specifically for verifier errors. Differentiate CRC vs. invalid
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* values, and omit the stack trace unless the error level is tuned high.
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*/
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void
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xfs_verifier_error(
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struct xfs_buf *bp)
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{
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struct xfs_mount *mp = bp->b_target->bt_mount;
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xfs_alert(mp, "Metadata %s detected at %pF, %s block 0x%llx",
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bp->b_error == -EFSBADCRC ? "CRC error" : "corruption",
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__return_address, bp->b_ops->name, bp->b_bn);
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xfs_alert(mp, "Unmount and run xfs_repair");
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if (xfs_error_level >= XFS_ERRLEVEL_LOW) {
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xfs_alert(mp, "First 64 bytes of corrupted metadata buffer:");
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xfs_hex_dump(xfs_buf_offset(bp, 0), 64);
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}
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if (xfs_error_level >= XFS_ERRLEVEL_HIGH)
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xfs_stack_trace();
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}
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