| /* |
| * 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 |
| |
| 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 %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, |
| 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"); |
| } |
| |
| /* |
| * 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(); |
| } |