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1 | /* |
2 | * Copyright (c) 2004 Silicon Graphics, Inc. All Rights Reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of version 2 of the GNU General Public License as | |
6 | * published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it would be useful, but | |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
11 | * | |
12 | * Further, this software is distributed without any warranty that it is | |
13 | * free of the rightful claim of any third person regarding infringement | |
14 | * or the like. Any license provided herein, whether implied or | |
15 | * otherwise, applies only to this software file. Patent licenses, if | |
16 | * any, provided herein do not apply to combinations of this program with | |
17 | * other software, or any other product whatsoever. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License along | |
20 | * with this program; if not, write the Free Software Foundation, Inc., 59 | |
21 | * Temple Place - Suite 330, Boston MA 02111-1307, USA. | |
22 | * | |
23 | * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, | |
24 | * Mountain View, CA 94043, or: | |
25 | * | |
26 | * http://www.sgi.com | |
27 | * | |
28 | * For further information regarding this notice, see: | |
29 | * | |
30 | * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ | |
31 | */ | |
32 | ||
33 | #include <xfs/libxfs.h> | |
0717a7db NS |
34 | #include <xfs/command.h> |
35 | #include <xfs/input.h> | |
48c46ee3 NS |
36 | #include "init.h" |
37 | #include "io.h" | |
38 | ||
39 | static cmdinfo_t inject_cmd; | |
40 | ||
41 | static int | |
42 | error_tag(char *name) | |
43 | { | |
44 | static struct { | |
45 | int tag; | |
46 | char *name; | |
47 | } *e, eflags[] = { | |
48 | #define XFS_ERRTAG_NOERROR 0 | |
49 | { XFS_ERRTAG_NOERROR, "noerror" }, | |
50 | #define XFS_ERRTAG_IFLUSH_1 1 | |
51 | { XFS_ERRTAG_IFLUSH_1, "iflush1" }, | |
52 | #define XFS_ERRTAG_IFLUSH_2 2 | |
53 | { XFS_ERRTAG_IFLUSH_2, "iflush2" }, | |
54 | #define XFS_ERRTAG_IFLUSH_3 3 | |
55 | { XFS_ERRTAG_IFLUSH_3, "iflush3" }, | |
56 | #define XFS_ERRTAG_IFLUSH_4 4 | |
57 | { XFS_ERRTAG_IFLUSH_4, "iflush4" }, | |
58 | #define XFS_ERRTAG_IFLUSH_5 5 | |
59 | { XFS_ERRTAG_IFLUSH_5, "iflush5" }, | |
60 | #define XFS_ERRTAG_IFLUSH_6 6 | |
61 | { XFS_ERRTAG_IFLUSH_6, "iflush6" }, | |
62 | #define XFS_ERRTAG_DA_READ_BUF 7 | |
63 | { XFS_ERRTAG_DA_READ_BUF, "dareadbuf" }, | |
64 | #define XFS_ERRTAG_BTREE_CHECK_LBLOCK 8 | |
65 | { XFS_ERRTAG_BTREE_CHECK_LBLOCK, "btree_chk_lblk" }, | |
66 | #define XFS_ERRTAG_BTREE_CHECK_SBLOCK 9 | |
67 | { XFS_ERRTAG_BTREE_CHECK_SBLOCK, "btree_chk_sblk" }, | |
68 | #define XFS_ERRTAG_ALLOC_READ_AGF 10 | |
69 | { XFS_ERRTAG_ALLOC_READ_AGF, "readagf" }, | |
70 | #define XFS_ERRTAG_IALLOC_READ_AGI 11 | |
71 | { XFS_ERRTAG_IALLOC_READ_AGI, "readagi" }, | |
72 | #define XFS_ERRTAG_ITOBP_INOTOBP 12 | |
73 | { XFS_ERRTAG_ITOBP_INOTOBP, "itobp" }, | |
74 | #define XFS_ERRTAG_IUNLINK 13 | |
75 | { XFS_ERRTAG_IUNLINK, "iunlink" }, | |
76 | #define XFS_ERRTAG_IUNLINK_REMOVE 14 | |
77 | { XFS_ERRTAG_IUNLINK_REMOVE, "iunlinkrm" }, | |
78 | #define XFS_ERRTAG_DIR_INO_VALIDATE 15 | |
79 | { XFS_ERRTAG_DIR_INO_VALIDATE, "dirinovalid" }, | |
80 | #define XFS_ERRTAG_BULKSTAT_READ_CHUNK 16 | |
81 | { XFS_ERRTAG_BULKSTAT_READ_CHUNK, "bulkstat" }, | |
82 | #define XFS_ERRTAG_IODONE_IOERR 17 | |
83 | { XFS_ERRTAG_IODONE_IOERR, "logiodone" }, | |
84 | #define XFS_ERRTAG_STRATREAD_IOERR 18 | |
85 | { XFS_ERRTAG_STRATREAD_IOERR, "stratread" }, | |
86 | #define XFS_ERRTAG_STRATCMPL_IOERR 19 | |
87 | { XFS_ERRTAG_STRATCMPL_IOERR, "stratcmpl" }, | |
88 | #define XFS_ERRTAG_DIOWRITE_IOERR 20 | |
89 | { XFS_ERRTAG_DIOWRITE_IOERR, "diowrite" }, | |
90 | #define XFS_ERRTAG_BMAPIFORMAT 21 | |
91 | { XFS_ERRTAG_BMAPIFORMAT, "bmapifmt" }, | |
92 | #define XFS_ERRTAG_MAX 22 | |
93 | { XFS_ERRTAG_MAX, NULL } | |
94 | }; | |
95 | int count; | |
96 | ||
97 | /* Search for a name */ | |
98 | if (name) { | |
99 | for (e = eflags; e->name; e++) | |
100 | if (strcmp(name, e->name) == 0) | |
101 | return e->tag; | |
102 | return -1; | |
103 | } | |
104 | ||
105 | /* Dump all the names */ | |
106 | fputs("tags: [ ", stdout); | |
107 | for (count = 0, e = eflags; e->name; e++, count++) { | |
108 | if (count) { | |
109 | fputs(", ", stdout); | |
110 | if (!(count % 5)) | |
111 | fputs("\n\t", stdout); | |
112 | } | |
113 | fputs(e->name, stdout); | |
114 | } | |
115 | fputs(" ]\n", stdout); | |
116 | return 0; | |
117 | } | |
118 | ||
119 | static void | |
120 | inject_help(void) | |
121 | { | |
122 | printf(_( | |
123 | "\n" | |
124 | " inject errors into the filesystem of the currently open file\n" | |
125 | "\n" | |
126 | " Example:\n" | |
127 | " 'inject readagf' - cause errors on allocation group freespace reads\n" | |
128 | "\n" | |
129 | " Causes the kernel to generate and react to errors within XFS, provided\n" | |
130 | " the XFS kernel code has been built with debugging features enabled.\n" | |
131 | " With no arguments, displays the list of error injection tags.\n" | |
132 | "\n")); | |
133 | } | |
134 | ||
135 | static int | |
136 | inject_f( | |
137 | int argc, | |
138 | char **argv) | |
139 | { | |
140 | xfs_error_injection_t error; | |
141 | int command = XFS_IOC_ERROR_INJECTION; | |
142 | ||
143 | if (argc == 1) | |
144 | return error_tag(NULL); | |
145 | ||
146 | while (--argc > 0) { | |
147 | error.fd = file->fd; | |
148 | if ((error.errtag = error_tag(argv[argc])) < 0) { | |
149 | fprintf(stderr, _("no such tag -- %s\n"), argv[1]); | |
150 | continue; | |
151 | } | |
152 | if (error.errtag == XFS_ERRTAG_NOERROR) | |
153 | command = XFS_IOC_ERROR_CLEARALL; | |
154 | if ((xfsctl(file->name, file->fd, command, &error)) < 0) { | |
155 | perror("XFS_IOC_ERROR_INJECTION"); | |
156 | continue; | |
157 | } | |
158 | } | |
159 | return 0; | |
160 | } | |
161 | ||
162 | void | |
163 | inject_init(void) | |
164 | { | |
165 | inject_cmd.name = _("inject"); | |
166 | inject_cmd.cfunc = inject_f; | |
167 | inject_cmd.argmin = 0; | |
168 | inject_cmd.argmax = -1; | |
169 | inject_cmd.flags = CMD_NOMAP_OK; | |
170 | inject_cmd.args = _("[tag ...]"); | |
171 | inject_cmd.oneline = _("inject errors into a filesystem"); | |
172 | inject_cmd.help = inject_help; | |
173 | ||
174 | if (expert) | |
175 | add_command(&inject_cmd); | |
176 | } |