]>
Commit | Line | Data |
---|---|---|
c6bd0c97 | 1 | /* |
7dec050a | 2 | * set_fields.c --- set a superblock value |
efc6f628 | 3 | * |
7dec050a | 4 | * Copyright (C) 2000, 2001, 2002, 2003, 2004 by Theodore Ts'o. |
efc6f628 | 5 | * |
7dec050a TT |
6 | * %Begin-Header% |
7 | * This file may be redistributed under the terms of the GNU Public | |
8 | * License. | |
9 | * %End-Header% | |
c6bd0c97 TT |
10 | */ |
11 | ||
007df860 TT |
12 | #define _XOPEN_SOURCE 600 /* for inclusion of strptime() and strtoull */ |
13 | ||
14 | #ifdef HAVE_STRTOULL | |
15 | #define STRTOULL strtoull | |
16 | #else | |
17 | #define STRTOULL strtoul | |
18 | #endif | |
619a8ea7 | 19 | |
d1154eb4 | 20 | #include "config.h" |
c6bd0c97 TT |
21 | #include <stdio.h> |
22 | #include <unistd.h> | |
23 | #include <stdlib.h> | |
24 | #include <ctype.h> | |
25 | #include <string.h> | |
8192c633 | 26 | #include <strings.h> |
c6bd0c97 TT |
27 | #include <time.h> |
28 | #include <sys/types.h> | |
29 | #include <sys/stat.h> | |
30 | #ifdef HAVE_ERRNO_H | |
31 | #include <errno.h> | |
32 | #endif | |
f7e37e8b | 33 | #include <assert.h> |
a98b51e9 TT |
34 | #if HAVE_STRINGS_H |
35 | #include <strings.h> | |
36 | #endif | |
c6bd0c97 TT |
37 | #include <fcntl.h> |
38 | #include <utime.h> | |
39 | ||
40 | #include "debugfs.h" | |
3e699064 TT |
41 | #include "uuid/uuid.h" |
42 | #include "e2p/e2p.h" | |
2d2d799c | 43 | #include "support/quotaio.h" |
c6bd0c97 TT |
44 | |
45 | static struct ext2_super_block set_sb; | |
16c581d0 | 46 | static struct ext2_inode_large set_inode; |
c7c1209e | 47 | static struct ext2_group_desc set_gd; |
16c581d0 | 48 | static struct ext4_group_desc set_gd4; |
3cebf9c1 | 49 | static struct mmp_struct set_mmp; |
cf96ecf1 | 50 | static dgrp_t set_bg; |
08fd3f36 TT |
51 | static ext2_ino_t set_ino; |
52 | static int array_idx; | |
53 | ||
54 | #define FLAG_ARRAY 0x0001 | |
f7e37e8b | 55 | #define FLAG_ALIAS 0x0002 /* Data intersects with other field */ |
32917350 | 56 | #define FLAG_CSUM 0x0004 |
c6bd0c97 | 57 | |
7dec050a | 58 | struct field_set_info { |
b044c2e0 | 59 | const char *name; |
c6bd0c97 | 60 | void *ptr; |
16c581d0 | 61 | void *ptr2; |
54434927 | 62 | unsigned int size; |
16c581d0 | 63 | errcode_t (*func)(struct field_set_info *info, char *field, char *arg); |
08fd3f36 TT |
64 | int flags; |
65 | int max_idx; | |
c6bd0c97 TT |
66 | }; |
67 | ||
16c581d0 TT |
68 | static errcode_t parse_uint(struct field_set_info *info, char *field, char *arg); |
69 | static errcode_t parse_int(struct field_set_info *info, char *field, char *arg); | |
70 | static errcode_t parse_string(struct field_set_info *info, char *field, char *arg); | |
71 | static errcode_t parse_uuid(struct field_set_info *info, char *field, char *arg); | |
72 | static errcode_t parse_hashalg(struct field_set_info *info, char *field, char *arg); | |
cc8df47c | 73 | static errcode_t parse_encoding(struct field_set_info *info, char *field, char *arg); |
16c581d0 TT |
74 | static errcode_t parse_time(struct field_set_info *info, char *field, char *arg); |
75 | static errcode_t parse_bmap(struct field_set_info *info, char *field, char *arg); | |
76 | static errcode_t parse_gd_csum(struct field_set_info *info, char *field, char *arg); | |
32917350 TT |
77 | static errcode_t parse_inode_csum(struct field_set_info *info, char *field, |
78 | char *arg); | |
3cebf9c1 TT |
79 | static errcode_t parse_mmp_clear(struct field_set_info *info, char *field, |
80 | char *arg); | |
c6bd0c97 | 81 | |
c4ef5b4f | 82 | #if __GNUC_PREREQ (4, 6) || defined(__clang__) |
12aa7ad5 TT |
83 | #pragma GCC diagnostic push |
84 | #pragma GCC diagnostic ignored "-Wmissing-field-initializers" | |
fddc423d | 85 | #endif |
12aa7ad5 | 86 | |
7dec050a | 87 | static struct field_set_info super_fields[] = { |
16c581d0 TT |
88 | { "inodes_count", &set_sb.s_inodes_count, NULL, 4, parse_uint }, |
89 | { "blocks_count", &set_sb.s_blocks_count, &set_sb.s_blocks_count_hi, | |
90 | 4, parse_uint }, | |
91 | { "r_blocks_count", &set_sb.s_r_blocks_count, | |
92 | &set_sb.s_r_blocks_count_hi, 4, parse_uint }, | |
93 | { "free_blocks_count", &set_sb.s_free_blocks_count, | |
94 | &set_sb.s_free_blocks_hi, 4, parse_uint }, | |
95 | { "free_inodes_count", &set_sb.s_free_inodes_count, NULL, 4, parse_uint }, | |
96 | { "first_data_block", &set_sb.s_first_data_block, NULL, 4, parse_uint }, | |
97 | { "log_block_size", &set_sb.s_log_block_size, NULL, 4, parse_uint }, | |
98 | { "log_cluster_size", &set_sb.s_log_cluster_size, NULL, 4, parse_int }, | |
99 | { "blocks_per_group", &set_sb.s_blocks_per_group, NULL, 4, parse_uint }, | |
100 | { "clusters_per_group", &set_sb.s_clusters_per_group, NULL, 4, parse_uint }, | |
101 | { "inodes_per_group", &set_sb.s_inodes_per_group, NULL, 4, parse_uint }, | |
102 | { "mtime", &set_sb.s_mtime, NULL, 4, parse_time }, | |
103 | { "wtime", &set_sb.s_wtime, NULL, 4, parse_time }, | |
104 | { "mnt_count", &set_sb.s_mnt_count, NULL, 2, parse_uint }, | |
105 | { "max_mnt_count", &set_sb.s_max_mnt_count, NULL, 2, parse_int }, | |
c6bd0c97 | 106 | /* s_magic */ |
16c581d0 TT |
107 | { "state", &set_sb.s_state, NULL, 2, parse_uint }, |
108 | { "errors", &set_sb.s_errors, NULL, 2, parse_uint }, | |
109 | { "minor_rev_level", &set_sb.s_minor_rev_level, NULL, 2, parse_uint }, | |
110 | { "lastcheck", &set_sb.s_lastcheck, NULL, 4, parse_time }, | |
111 | { "checkinterval", &set_sb.s_checkinterval, NULL, 4, parse_uint }, | |
112 | { "creator_os", &set_sb.s_creator_os, NULL, 4, parse_uint }, | |
113 | { "rev_level", &set_sb.s_rev_level, NULL, 4, parse_uint }, | |
114 | { "def_resuid", &set_sb.s_def_resuid, NULL, 2, parse_uint }, | |
115 | { "def_resgid", &set_sb.s_def_resgid, NULL, 2, parse_uint }, | |
116 | { "first_ino", &set_sb.s_first_ino, NULL, 4, parse_uint }, | |
117 | { "inode_size", &set_sb.s_inode_size, NULL, 2, parse_uint }, | |
118 | { "block_group_nr", &set_sb.s_block_group_nr, NULL, 2, parse_uint }, | |
119 | { "feature_compat", &set_sb.s_feature_compat, NULL, 4, parse_uint }, | |
120 | { "feature_incompat", &set_sb.s_feature_incompat, NULL, 4, parse_uint }, | |
121 | { "feature_ro_compat", &set_sb.s_feature_ro_compat, NULL, 4, parse_uint }, | |
122 | { "uuid", &set_sb.s_uuid, NULL, 16, parse_uuid }, | |
123 | { "volume_name", &set_sb.s_volume_name, NULL, 16, parse_string }, | |
124 | { "last_mounted", &set_sb.s_last_mounted, NULL, 64, parse_string }, | |
16c581d0 | 125 | { "algorithm_usage_bitmap", &set_sb.s_algorithm_usage_bitmap, NULL, |
c6bd0c97 | 126 | 4, parse_uint }, |
16c581d0 TT |
127 | { "prealloc_blocks", &set_sb.s_prealloc_blocks, NULL, 1, parse_uint }, |
128 | { "prealloc_dir_blocks", &set_sb.s_prealloc_dir_blocks, NULL, 1, | |
c6bd0c97 | 129 | parse_uint }, |
16c581d0 | 130 | { "reserved_gdt_blocks", &set_sb.s_reserved_gdt_blocks, NULL, 2, |
a06bd026 | 131 | parse_uint }, |
16c581d0 TT |
132 | { "journal_uuid", &set_sb.s_journal_uuid, NULL, 16, parse_uuid }, |
133 | { "journal_inum", &set_sb.s_journal_inum, NULL, 4, parse_uint }, | |
134 | { "journal_dev", &set_sb.s_journal_dev, NULL, 4, parse_uint }, | |
135 | { "last_orphan", &set_sb.s_last_orphan, NULL, 4, parse_uint }, | |
136 | { "hash_seed", &set_sb.s_hash_seed, NULL, 16, parse_uuid }, | |
137 | { "def_hash_version", &set_sb.s_def_hash_version, NULL, 1, parse_hashalg }, | |
138 | { "jnl_backup_type", &set_sb.s_jnl_backup_type, NULL, 1, parse_uint }, | |
139 | { "desc_size", &set_sb.s_desc_size, NULL, 2, parse_uint }, | |
140 | { "default_mount_opts", &set_sb.s_default_mount_opts, NULL, 4, parse_uint }, | |
141 | { "first_meta_bg", &set_sb.s_first_meta_bg, NULL, 4, parse_uint }, | |
142 | { "mkfs_time", &set_sb.s_mkfs_time, NULL, 4, parse_time }, | |
143 | { "jnl_blocks", &set_sb.s_jnl_blocks[0], NULL, 4, parse_uint, FLAG_ARRAY, | |
89c80156 | 144 | 17 }, |
16c581d0 TT |
145 | { "min_extra_isize", &set_sb.s_min_extra_isize, NULL, 2, parse_uint }, |
146 | { "want_extra_isize", &set_sb.s_want_extra_isize, NULL, 2, parse_uint }, | |
147 | { "flags", &set_sb.s_flags, NULL, 4, parse_uint }, | |
148 | { "raid_stride", &set_sb.s_raid_stride, NULL, 2, parse_uint }, | |
0f5eba75 | 149 | { "mmp_interval", &set_sb.s_mmp_update_interval, NULL, 2, parse_uint }, |
16c581d0 TT |
150 | { "mmp_block", &set_sb.s_mmp_block, NULL, 8, parse_uint }, |
151 | { "raid_stripe_width", &set_sb.s_raid_stripe_width, NULL, 4, parse_uint }, | |
152 | { "log_groups_per_flex", &set_sb.s_log_groups_per_flex, NULL, 1, parse_uint }, | |
153 | { "kbytes_written", &set_sb.s_kbytes_written, NULL, 8, parse_uint }, | |
154 | { "snapshot_inum", &set_sb.s_snapshot_inum, NULL, 4, parse_uint }, | |
155 | { "snapshot_id", &set_sb.s_snapshot_id, NULL, 4, parse_uint }, | |
156 | { "snapshot_r_blocks_count", &set_sb.s_snapshot_r_blocks_count, | |
157 | NULL, 8, parse_uint }, | |
158 | { "snapshot_list", &set_sb.s_snapshot_list, NULL, 4, parse_uint }, | |
159 | { "mount_opts", &set_sb.s_mount_opts, NULL, 64, parse_string }, | |
160 | { "usr_quota_inum", &set_sb.s_usr_quota_inum, NULL, 4, parse_uint }, | |
161 | { "grp_quota_inum", &set_sb.s_grp_quota_inum, NULL, 4, parse_uint }, | |
080e09b4 | 162 | { "prj_quota_inum", &set_sb.s_prj_quota_inum, NULL, 4, parse_uint }, |
16c581d0 | 163 | { "overhead_blocks", &set_sb.s_overhead_blocks, NULL, 4, parse_uint }, |
65c6c3e0 TT |
164 | { "backup_bgs", &set_sb.s_backup_bgs[0], NULL, 4, parse_uint, |
165 | FLAG_ARRAY, 2 }, | |
16c581d0 | 166 | { "checksum", &set_sb.s_checksum, NULL, 4, parse_uint }, |
1eedf3e5 | 167 | { "checksum_type", &set_sb.s_checksum_type, NULL, 1, parse_uint }, |
fc898cb9 | 168 | { "encryption_level", &set_sb.s_encryption_level, NULL, 1, parse_uint }, |
a5116959 TT |
169 | { "error_count", &set_sb.s_error_count, NULL, 4, parse_uint }, |
170 | { "first_error_time", &set_sb.s_first_error_time, NULL, 4, parse_time }, | |
171 | { "first_error_ino", &set_sb.s_first_error_ino, NULL, 4, parse_uint }, | |
172 | { "first_error_block", &set_sb.s_first_error_block, NULL, 8, parse_uint }, | |
173 | { "first_error_func", &set_sb.s_first_error_func, NULL, 32, parse_string }, | |
f7e37e8b | 174 | { "first_error_line", &set_sb.s_first_error_line, NULL, 4, parse_uint }, |
a5116959 TT |
175 | { "last_error_time", &set_sb.s_last_error_time, NULL, 4, parse_time }, |
176 | { "last_error_ino", &set_sb.s_last_error_ino, NULL, 4, parse_uint }, | |
177 | { "last_error_block", &set_sb.s_last_error_block, NULL, 8, parse_uint }, | |
178 | { "last_error_func", &set_sb.s_last_error_func, NULL, 32, parse_string }, | |
f7e37e8b | 179 | { "last_error_line", &set_sb.s_last_error_line, NULL, 4, parse_uint }, |
22f22ab1 TT |
180 | { "encrypt_algos", &set_sb.s_encrypt_algos, NULL, 1, parse_uint, |
181 | FLAG_ARRAY, 4 }, | |
41f22101 | 182 | { "encrypt_pw_salt", &set_sb.s_encrypt_pw_salt, NULL, 16, parse_uuid }, |
fc898cb9 | 183 | { "lpf_ino", &set_sb.s_lpf_ino, NULL, 4, parse_uint }, |
2ed0adbc | 184 | { "checksum_seed", &set_sb.s_checksum_seed, NULL, 4, parse_uint }, |
cc8df47c | 185 | { "encoding", &set_sb.s_encoding, NULL, 2, parse_encoding }, |
c6bd0c97 TT |
186 | { 0, 0, 0, 0 } |
187 | }; | |
188 | ||
7dec050a | 189 | static struct field_set_info inode_fields[] = { |
16c581d0 TT |
190 | { "mode", &set_inode.i_mode, NULL, 2, parse_uint }, |
191 | { "uid", &set_inode.i_uid, &set_inode.osd2.linux2.l_i_uid_high, | |
192 | 2, parse_uint }, | |
193 | { "size", &set_inode.i_size, &set_inode.i_size_high, 4, parse_uint }, | |
188960ea TT |
194 | { "atime", &set_inode.i_atime, &set_inode.i_atime_extra, |
195 | 4, parse_time }, | |
196 | { "ctime", &set_inode.i_ctime, &set_inode.i_ctime_extra, | |
197 | 4, parse_time }, | |
198 | { "mtime", &set_inode.i_mtime, &set_inode.i_mtime_extra, | |
199 | 4, parse_time }, | |
200 | { "dtime", &set_inode.i_dtime, NULL, | |
201 | 4, parse_time }, | |
16c581d0 TT |
202 | { "gid", &set_inode.i_gid, &set_inode.osd2.linux2.l_i_gid_high, |
203 | 2, parse_uint }, | |
204 | { "links_count", &set_inode.i_links_count, NULL, 2, parse_uint }, | |
205 | /* Special case: i_blocks is 4 bytes, i_blocks_high is 2 bytes */ | |
206 | { "blocks", &set_inode.i_blocks, &set_inode.osd2.linux2.l_i_blocks_hi, | |
207 | 6, parse_uint }, | |
208 | { "flags", &set_inode.i_flags, NULL, 4, parse_uint }, | |
209 | { "version", &set_inode.osd1.linux1.l_i_version, | |
210 | &set_inode.i_version_hi, 4, parse_uint }, | |
f7e37e8b KK |
211 | { "translator", &set_inode.osd1.hurd1.h_i_translator, NULL, |
212 | 4, parse_uint, FLAG_ALIAS }, | |
16c581d0 | 213 | { "block", &set_inode.i_block[0], NULL, 4, parse_uint, FLAG_ARRAY, |
08fd3f36 | 214 | EXT2_NDIR_BLOCKS }, |
16c581d0 TT |
215 | { "block[IND]", &set_inode.i_block[EXT2_IND_BLOCK], NULL, 4, parse_uint }, |
216 | { "block[DIND]", &set_inode.i_block[EXT2_DIND_BLOCK], NULL, 4, parse_uint }, | |
217 | { "block[TIND]", &set_inode.i_block[EXT2_TIND_BLOCK], NULL, 4, parse_uint }, | |
218 | { "generation", &set_inode.i_generation, NULL, 4, parse_uint }, | |
219 | /* Special case: i_file_acl_high is 2 bytes */ | |
220 | { "file_acl", &set_inode.i_file_acl, | |
221 | &set_inode.osd2.linux2.l_i_file_acl_high, 6, parse_uint }, | |
16c581d0 | 222 | { "faddr", &set_inode.i_faddr, NULL, 4, parse_uint }, |
f7e37e8b | 223 | { "frag", &set_inode.osd2.hurd2.h_i_frag, NULL, 1, parse_uint, FLAG_ALIAS }, |
16c581d0 TT |
224 | { "fsize", &set_inode.osd2.hurd2.h_i_fsize, NULL, 1, parse_uint }, |
225 | { "checksum", &set_inode.osd2.linux2.l_i_checksum_lo, | |
32917350 | 226 | &set_inode.i_checksum_hi, 2, parse_inode_csum, FLAG_CSUM }, |
16c581d0 | 227 | { "author", &set_inode.osd2.hurd2.h_i_author, NULL, |
f7e37e8b | 228 | 4, parse_uint, FLAG_ALIAS }, |
16c581d0 TT |
229 | { "extra_isize", &set_inode.i_extra_isize, NULL, |
230 | 2, parse_uint }, | |
231 | { "ctime_extra", &set_inode.i_ctime_extra, NULL, | |
188960ea | 232 | 4, parse_uint, FLAG_ALIAS }, |
16c581d0 | 233 | { "mtime_extra", &set_inode.i_mtime_extra, NULL, |
188960ea | 234 | 4, parse_uint, FLAG_ALIAS }, |
16c581d0 | 235 | { "atime_extra", &set_inode.i_atime_extra, NULL, |
188960ea TT |
236 | 4, parse_uint, FLAG_ALIAS }, |
237 | { "crtime", &set_inode.i_crtime, &set_inode.i_crtime_extra, | |
238 | 4, parse_time }, | |
16c581d0 | 239 | { "crtime_extra", &set_inode.i_crtime_extra, NULL, |
188960ea | 240 | 4, parse_uint, FLAG_ALIAS }, |
f3d9ac36 | 241 | { "projid", &set_inode.i_projid, NULL, 4, parse_uint }, |
16c581d0 | 242 | { "bmap", NULL, NULL, 4, parse_bmap, FLAG_ARRAY }, |
7dec050a TT |
243 | { 0, 0, 0, 0 } |
244 | }; | |
245 | ||
c7c1209e | 246 | static struct field_set_info ext2_bg_fields[] = { |
16c581d0 TT |
247 | { "block_bitmap", &set_gd.bg_block_bitmap, NULL, 4, parse_uint }, |
248 | { "inode_bitmap", &set_gd.bg_inode_bitmap, NULL, 4, parse_uint }, | |
249 | { "inode_table", &set_gd.bg_inode_table, NULL, 4, parse_uint }, | |
250 | { "free_blocks_count", &set_gd.bg_free_blocks_count, NULL, 2, parse_uint }, | |
251 | { "free_inodes_count", &set_gd.bg_free_inodes_count, NULL, 2, parse_uint }, | |
252 | { "used_dirs_count", &set_gd.bg_used_dirs_count, NULL, 2, parse_uint }, | |
253 | { "flags", &set_gd.bg_flags, NULL, 2, parse_uint }, | |
254 | { "itable_unused", &set_gd.bg_itable_unused, NULL, 2, parse_uint }, | |
255 | { "checksum", &set_gd.bg_checksum, NULL, 2, parse_gd_csum }, | |
c7c1209e TT |
256 | { 0, 0, 0, 0 } |
257 | }; | |
258 | ||
16c581d0 TT |
259 | static struct field_set_info ext4_bg_fields[] = { |
260 | { "block_bitmap", &set_gd4.bg_block_bitmap, | |
261 | &set_gd4.bg_block_bitmap_hi, 4, parse_uint }, | |
262 | { "inode_bitmap", &set_gd4.bg_inode_bitmap, | |
263 | &set_gd4.bg_inode_bitmap_hi, 4, parse_uint }, | |
264 | { "inode_table", &set_gd4.bg_inode_table, | |
265 | &set_gd4.bg_inode_table_hi, 4, parse_uint }, | |
266 | { "free_blocks_count", &set_gd4.bg_free_blocks_count, | |
267 | &set_gd4.bg_free_blocks_count_hi, 2, parse_uint }, | |
268 | { "free_inodes_count", &set_gd4.bg_free_inodes_count, | |
269 | &set_gd4.bg_free_inodes_count_hi, 2, parse_uint }, | |
270 | { "used_dirs_count", &set_gd4.bg_used_dirs_count, | |
271 | &set_gd4.bg_used_dirs_count_hi, 2, parse_uint }, | |
272 | { "flags", &set_gd4.bg_flags, NULL, 2, parse_uint }, | |
273 | { "exclude_bitmap", &set_gd4.bg_exclude_bitmap_lo, | |
274 | &set_gd4.bg_exclude_bitmap_hi, 4, parse_uint }, | |
275 | { "block_bitmap_csum", &set_gd4.bg_block_bitmap_csum_lo, | |
276 | &set_gd4.bg_block_bitmap_csum_hi, 2, parse_uint }, | |
277 | { "inode_bitmap_csum", &set_gd4.bg_inode_bitmap_csum_lo, | |
278 | &set_gd4.bg_inode_bitmap_csum_hi, 2, parse_uint }, | |
279 | { "itable_unused", &set_gd4.bg_itable_unused, | |
280 | &set_gd4.bg_itable_unused_hi, 2, parse_uint }, | |
281 | { "checksum", &set_gd4.bg_checksum, NULL, 2, parse_gd_csum }, | |
282 | { 0, 0, 0, 0 } | |
283 | }; | |
284 | ||
3cebf9c1 | 285 | static struct field_set_info mmp_fields[] = { |
f7e37e8b KK |
286 | { "clear", &set_mmp.mmp_magic, NULL, sizeof(set_mmp), |
287 | parse_mmp_clear, FLAG_ALIAS }, | |
3cebf9c1 TT |
288 | { "magic", &set_mmp.mmp_magic, NULL, 4, parse_uint }, |
289 | { "seq", &set_mmp.mmp_seq, NULL, 4, parse_uint }, | |
290 | { "time", &set_mmp.mmp_time, NULL, 8, parse_uint }, | |
291 | { "nodename", &set_mmp.mmp_nodename, NULL, sizeof(set_mmp.mmp_nodename), | |
292 | parse_string }, | |
293 | { "bdevname", &set_mmp.mmp_bdevname, NULL, sizeof(set_mmp.mmp_bdevname), | |
294 | parse_string }, | |
295 | { "check_interval", &set_mmp.mmp_check_interval, NULL, 2, parse_uint }, | |
a9620d8b | 296 | { "checksum", &set_mmp.mmp_checksum, NULL, 4, parse_uint }, |
f7e37e8b | 297 | { 0, 0, 0, 0 } |
3cebf9c1 | 298 | }; |
fddc423d | 299 | #if __GNUC_PREREQ (4, 6) |
12aa7ad5 | 300 | #pragma GCC diagnostic pop |
fddc423d | 301 | #endif |
7105c183 | 302 | |
f7e37e8b KK |
303 | #ifdef UNITTEST |
304 | ||
12aa7ad5 | 305 | |
f7e37e8b KK |
306 | static void do_verify_field_set_info(struct field_set_info *fields, |
307 | const void *data, size_t size) | |
308 | { | |
309 | struct field_set_info *ss, *ss2; | |
310 | const char *begin = (char *)data; | |
311 | const char *end = begin + size; | |
312 | ||
313 | for (ss = fields ; ss->name ; ss++) { | |
314 | const char *ptr; | |
315 | ||
316 | /* Check pointers */ | |
317 | ptr = ss->ptr; | |
318 | assert(!ptr || (ptr >= begin && ptr < end)); | |
319 | ptr = ss->ptr2; | |
320 | assert(!ptr || (ptr >= begin && ptr < end)); | |
321 | ||
322 | /* Check function */ | |
323 | assert(ss->func); | |
324 | ||
325 | for (ss2 = fields ; ss2 != ss ; ss2++) { | |
326 | /* Check duplicate names */ | |
327 | assert(strcmp(ss->name, ss2->name)); | |
328 | ||
329 | if (ss->flags & FLAG_ALIAS || ss2->flags & FLAG_ALIAS) | |
330 | continue; | |
331 | /* Check false aliases, might be copy-n-paste error */ | |
332 | assert(!ss->ptr || (ss->ptr != ss2->ptr && | |
333 | ss->ptr != ss2->ptr2)); | |
334 | assert(!ss->ptr2 || (ss->ptr2 != ss2->ptr && | |
335 | ss->ptr2 != ss2->ptr2)); | |
336 | } | |
337 | } | |
338 | } | |
339 | ||
340 | int main(int argc, char **argv) | |
341 | { | |
342 | do_verify_field_set_info(super_fields, &set_sb, sizeof(set_sb)); | |
343 | do_verify_field_set_info(inode_fields, &set_inode, sizeof(set_inode)); | |
344 | do_verify_field_set_info(ext2_bg_fields, &set_gd, sizeof(set_gd)); | |
345 | do_verify_field_set_info(ext4_bg_fields, &set_gd4, sizeof(set_gd4)); | |
346 | do_verify_field_set_info(mmp_fields, &set_mmp, sizeof(set_mmp)); | |
347 | return 0; | |
348 | } | |
349 | ||
350 | ext2_filsys current_fs; | |
351 | ext2_ino_t root, cwd; | |
352 | ||
353 | #endif /* UNITTEST */ | |
354 | ||
16c581d0 TT |
355 | static int check_suffix(const char *field) |
356 | { | |
357 | int len = strlen(field); | |
358 | ||
359 | if (len <= 3) | |
360 | return 0; | |
361 | field += len-3; | |
362 | if (!strcmp(field, "_lo")) | |
363 | return 1; | |
364 | if (!strcmp(field, "_hi")) | |
365 | return 2; | |
366 | return 0; | |
367 | } | |
c7c1209e | 368 | |
7dec050a TT |
369 | static struct field_set_info *find_field(struct field_set_info *fields, |
370 | char *field) | |
c6bd0c97 | 371 | { |
7dec050a | 372 | struct field_set_info *ss; |
08fd3f36 TT |
373 | const char *prefix; |
374 | char *arg, *delim, *idx, *tmp; | |
16c581d0 | 375 | int suffix, prefix_len; |
08fd3f36 TT |
376 | |
377 | if (fields == super_fields) | |
378 | prefix = "s_"; | |
c7c1209e | 379 | else if (fields == inode_fields) |
08fd3f36 | 380 | prefix = "i_"; |
c7c1209e TT |
381 | else |
382 | prefix = "bg_"; | |
383 | prefix_len = strlen(prefix); | |
384 | if (strncmp(field, prefix, prefix_len) == 0) | |
385 | field += prefix_len; | |
08fd3f36 TT |
386 | |
387 | arg = malloc(strlen(field)+1); | |
388 | if (!arg) | |
389 | return NULL; | |
390 | strcpy(arg, field); | |
391 | ||
392 | idx = strchr(arg, '['); | |
393 | if (idx) { | |
394 | *idx++ = 0; | |
395 | delim = idx + strlen(idx) - 1; | |
396 | if (!*idx || *delim != ']') | |
397 | idx = 0; | |
398 | else | |
399 | *delim = 0; | |
400 | } | |
efc6f628 | 401 | /* |
08fd3f36 TT |
402 | * Can we parse the number? |
403 | */ | |
404 | if (idx) { | |
405 | array_idx = strtol(idx, &tmp, 0); | |
59a591f6 TT |
406 | if (*tmp) { |
407 | *(--idx) = '['; | |
408 | *delim = ']'; | |
08fd3f36 | 409 | idx = 0; |
59a591f6 | 410 | } |
08fd3f36 TT |
411 | } |
412 | ||
16c581d0 TT |
413 | /* |
414 | * If there is a valid _hi or a _lo suffix, strip it off | |
415 | */ | |
416 | suffix = check_suffix(arg); | |
417 | if (suffix > 0) | |
418 | arg[strlen(arg)-3] = 0; | |
419 | ||
7dec050a | 420 | for (ss = fields ; ss->name ; ss++) { |
16c581d0 TT |
421 | if (suffix && ss->ptr2 == 0) |
422 | continue; | |
08fd3f36 TT |
423 | if (ss->flags & FLAG_ARRAY) { |
424 | if (!idx || (strcmp(ss->name, arg) != 0)) | |
425 | continue; | |
426 | if (ss->max_idx > 0 && array_idx >= ss->max_idx) | |
427 | continue; | |
428 | } else { | |
16c581d0 | 429 | if (strcmp(ss->name, arg) != 0) |
08fd3f36 TT |
430 | continue; |
431 | } | |
6e9761c2 | 432 | free(arg); |
08fd3f36 | 433 | return ss; |
c6bd0c97 | 434 | } |
6e9761c2 | 435 | free(arg); |
c6bd0c97 TT |
436 | return NULL; |
437 | } | |
438 | ||
16c581d0 TT |
439 | /* |
440 | * Note: info->size == 6 is special; this means a base size 4 bytes, | |
055866d8 | 441 | * and secondary (high) size of 2 bytes. This is needed for the |
16c581d0 TT |
442 | * special case of i_blocks_high and i_file_acl_high. |
443 | */ | |
444 | static errcode_t parse_uint(struct field_set_info *info, char *field, | |
445 | char *arg) | |
c6bd0c97 | 446 | { |
16c581d0 TT |
447 | unsigned long long n, num, mask, limit; |
448 | int suffix = check_suffix(field); | |
c6bd0c97 | 449 | char *tmp; |
16c581d0 TT |
450 | void *field1 = info->ptr, *field2 = info->ptr2; |
451 | int size = (info->size == 6) ? 4 : info->size; | |
08fd3f36 | 452 | union { |
007df860 | 453 | __u64 *ptr64; |
08fd3f36 TT |
454 | __u32 *ptr32; |
455 | __u16 *ptr16; | |
456 | __u8 *ptr8; | |
457 | } u; | |
458 | ||
16c581d0 TT |
459 | if (suffix == 1) |
460 | field2 = 0; | |
461 | if (suffix == 2) { | |
462 | field1 = field2; | |
463 | field2 = 0; | |
464 | } | |
465 | ||
466 | u.ptr8 = (__u8 *) field1; | |
08fd3f36 TT |
467 | if (info->flags & FLAG_ARRAY) |
468 | u.ptr8 += array_idx * info->size; | |
c6bd0c97 | 469 | |
007df860 TT |
470 | errno = 0; |
471 | num = STRTOULL(arg, &tmp, 0); | |
472 | if (*tmp || errno) { | |
c6bd0c97 TT |
473 | fprintf(stderr, "Couldn't parse '%s' for field %s.\n", |
474 | arg, info->name); | |
475 | return EINVAL; | |
476 | } | |
16c581d0 | 477 | mask = ~0ULL >> ((8 - size) * 8); |
007df860 | 478 | limit = ~0ULL >> ((8 - info->size) * 8); |
16c581d0 TT |
479 | if (field2 && info->size != 6) |
480 | limit = ~0ULL >> ((8 - info->size*2) * 8); | |
481 | ||
007df860 TT |
482 | if (num > limit) { |
483 | fprintf(stderr, "Value '%s' exceeds field %s maximum %llu.\n", | |
484 | arg, info->name, limit); | |
485 | return EINVAL; | |
486 | } | |
16c581d0 TT |
487 | n = num & mask; |
488 | switch (size) { | |
007df860 | 489 | case 8: |
7c1384c3 TT |
490 | /* Should never get here */ |
491 | fprintf(stderr, "64-bit field %s has a second 64-bit field\n" | |
492 | "defined; BUG?!?\n", info->name); | |
493 | *u.ptr64 = 0; | |
007df860 | 494 | break; |
c6bd0c97 | 495 | case 4: |
16c581d0 | 496 | *u.ptr32 = n; |
c6bd0c97 TT |
497 | break; |
498 | case 2: | |
16c581d0 | 499 | *u.ptr16 = n; |
c6bd0c97 TT |
500 | break; |
501 | case 1: | |
16c581d0 TT |
502 | *u.ptr8 = n; |
503 | break; | |
504 | } | |
505 | if (!field2) | |
506 | return 0; | |
366d526f | 507 | n = (size == 8) ? 0 : (num >> (size*8)); |
16c581d0 TT |
508 | u.ptr8 = (__u8 *) field2; |
509 | if (info->size == 6) | |
510 | size = 2; | |
511 | switch (size) { | |
512 | case 8: | |
513 | *u.ptr64 = n; | |
514 | break; | |
515 | case 4: | |
516 | *u.ptr32 = n; | |
517 | break; | |
518 | case 2: | |
519 | *u.ptr16 = n; | |
520 | break; | |
521 | case 1: | |
522 | *u.ptr8 = n; | |
c6bd0c97 TT |
523 | break; |
524 | } | |
525 | return 0; | |
526 | } | |
527 | ||
3cebf9c1 TT |
528 | static errcode_t parse_int(struct field_set_info *info, |
529 | char *field EXT2FS_ATTR((unused)), char *arg) | |
c6bd0c97 TT |
530 | { |
531 | long num; | |
532 | char *tmp; | |
533 | __s32 *ptr32; | |
534 | __s16 *ptr16; | |
535 | __s8 *ptr8; | |
536 | ||
537 | num = strtol(arg, &tmp, 0); | |
538 | if (*tmp) { | |
539 | fprintf(stderr, "Couldn't parse '%s' for field %s.\n", | |
540 | arg, info->name); | |
541 | return EINVAL; | |
542 | } | |
543 | switch (info->size) { | |
544 | case 4: | |
545 | ptr32 = (__s32 *) info->ptr; | |
546 | *ptr32 = num; | |
547 | break; | |
548 | case 2: | |
549 | ptr16 = (__s16 *) info->ptr; | |
550 | *ptr16 = num; | |
551 | break; | |
552 | case 1: | |
553 | ptr8 = (__s8 *) info->ptr; | |
554 | *ptr8 = num; | |
555 | break; | |
556 | } | |
557 | return 0; | |
558 | } | |
559 | ||
3cebf9c1 TT |
560 | static errcode_t parse_string(struct field_set_info *info, |
561 | char *field EXT2FS_ATTR((unused)), char *arg) | |
c6bd0c97 TT |
562 | { |
563 | char *cp = (char *) info->ptr; | |
564 | ||
565 | if (strlen(arg) >= info->size) { | |
566 | fprintf(stderr, "Error maximum size for %s is %d.\n", | |
567 | info->name, info->size); | |
568 | return EINVAL; | |
569 | } | |
570 | strcpy(cp, arg); | |
571 | return 0; | |
572 | } | |
573 | ||
3cebf9c1 | 574 | static errcode_t parse_time(struct field_set_info *info, |
188960ea | 575 | char *field, char *arg) |
7dec050a | 576 | { |
188960ea TT |
577 | __s64 t; |
578 | __u32 t_low, t_high; | |
579 | __u32 *ptr_low, *ptr_high; | |
188960ea TT |
580 | |
581 | if (check_suffix(field)) | |
582 | return parse_uint(info, field, arg); | |
7dec050a | 583 | |
188960ea TT |
584 | ptr_low = (__u32 *) info->ptr; |
585 | ptr_high = (__u32 *) info->ptr2; | |
7dec050a | 586 | |
4efae606 TT |
587 | t = string_to_time(arg); |
588 | ||
188960ea | 589 | if (t == -1) { |
4efae606 TT |
590 | fprintf(stderr, "Couldn't parse '%s' for field %s.\n", |
591 | arg, info->name); | |
592 | return EINVAL; | |
7dec050a | 593 | } |
188960ea TT |
594 | t_low = (__u32) t; |
595 | t_high = ((t - (__s32)t) >> 32) & EXT4_EPOCH_MASK; | |
596 | *ptr_low = t_low; | |
597 | if (ptr_high) | |
598 | *ptr_high = (*ptr_high & ~EXT4_EPOCH_MASK) | t_high; | |
7dec050a TT |
599 | return 0; |
600 | } | |
601 | ||
3cebf9c1 TT |
602 | static errcode_t parse_uuid(struct field_set_info *info, |
603 | char *field EXT2FS_ATTR((unused)), char *arg) | |
f61fc0b5 | 604 | { |
3e699064 | 605 | unsigned char * p = (unsigned char *) info->ptr; |
efc6f628 | 606 | |
f61fc0b5 TT |
607 | if ((strcasecmp(arg, "null") == 0) || |
608 | (strcasecmp(arg, "clear") == 0)) { | |
609 | uuid_clear(p); | |
610 | } else if (strcasecmp(arg, "time") == 0) { | |
611 | uuid_generate_time(p); | |
612 | } else if (strcasecmp(arg, "random") == 0) { | |
613 | uuid_generate(p); | |
614 | } else if (uuid_parse(arg, p)) { | |
615 | fprintf(stderr, "Invalid UUID format: %s\n", arg); | |
616 | return EINVAL; | |
617 | } | |
618 | return 0; | |
619 | } | |
620 | ||
3cebf9c1 TT |
621 | static errcode_t parse_hashalg(struct field_set_info *info, |
622 | char *field EXT2FS_ATTR((unused)), char *arg) | |
f61fc0b5 TT |
623 | { |
624 | int hashv; | |
625 | unsigned char *p = (unsigned char *) info->ptr; | |
626 | ||
627 | hashv = e2p_string2hash(arg); | |
628 | if (hashv < 0) { | |
629 | fprintf(stderr, "Invalid hash algorithm: %s\n", arg); | |
630 | return EINVAL; | |
631 | } | |
632 | *p = hashv; | |
633 | return 0; | |
634 | } | |
635 | ||
cc8df47c TT |
636 | static errcode_t parse_encoding(struct field_set_info *info, |
637 | char *field EXT2FS_ATTR((unused)), char *arg) | |
638 | { | |
639 | int encoding; | |
640 | unsigned char *p = (unsigned char *) info->ptr; | |
641 | ||
642 | encoding = e2p_str2encoding(arg); | |
643 | if (encoding < 0) | |
644 | return parse_uint(info, field, arg); | |
645 | *p = encoding; | |
646 | return 0; | |
647 | } | |
648 | ||
3cebf9c1 TT |
649 | static errcode_t parse_bmap(struct field_set_info *info, |
650 | char *field EXT2FS_ATTR((unused)), char *arg) | |
08fd3f36 | 651 | { |
4dbfd79d | 652 | blk64_t blk; |
08fd3f36 TT |
653 | errcode_t retval; |
654 | char *tmp; | |
655 | ||
4dbfd79d | 656 | blk = strtoull(arg, &tmp, 0); |
08fd3f36 TT |
657 | if (*tmp) { |
658 | fprintf(stderr, "Couldn't parse '%s' for field %s.\n", | |
659 | arg, info->name); | |
660 | return EINVAL; | |
661 | } | |
08fd3f36 | 662 | |
4dbfd79d | 663 | retval = ext2fs_bmap2(current_fs, set_ino, |
fa633bf9 DW |
664 | (struct ext2_inode *) &set_inode, |
665 | NULL, BMAP_ALLOC | BMAP_SET, array_idx, NULL, | |
666 | &blk); | |
08fd3f36 TT |
667 | if (retval) { |
668 | com_err("set_inode", retval, "while setting block map"); | |
669 | } | |
619a8ea7 | 670 | return retval; |
08fd3f36 TT |
671 | } |
672 | ||
16c581d0 TT |
673 | static errcode_t parse_gd_csum(struct field_set_info *info, char *field, |
674 | char *arg) | |
cf96ecf1 | 675 | { |
612f7753 | 676 | __u16 *checksum = info->ptr; |
cf96ecf1 AD |
677 | |
678 | if (strcmp(arg, "calc") == 0) { | |
612f7753 TT |
679 | *checksum = ext2fs_group_desc_csum(current_fs, set_bg); |
680 | printf("Checksum set to 0x%04x\n", *checksum); | |
cf96ecf1 AD |
681 | return 0; |
682 | } | |
16c581d0 | 683 | return parse_uint(info, field, arg); |
cf96ecf1 | 684 | } |
f61fc0b5 | 685 | |
32917350 TT |
686 | static errcode_t parse_inode_csum(struct field_set_info *info, char *field, |
687 | char *arg) | |
688 | { | |
689 | errcode_t retval = 0; | |
690 | __u32 crc; | |
691 | int is_large_inode = 0; | |
32917350 TT |
692 | |
693 | if (strcmp(arg, "calc") == 0) { | |
694 | size_t sz = EXT2_INODE_SIZE(current_fs->super); | |
695 | struct ext2_inode_large *tmp_inode = NULL; | |
696 | ||
697 | retval = ext2fs_get_mem(sz, &tmp_inode); | |
698 | if (retval) | |
699 | goto out; | |
700 | ||
701 | retval = ext2fs_read_inode_full(current_fs, set_ino, | |
702 | (struct ext2_inode *) tmp_inode, | |
703 | sz); | |
704 | if (retval) | |
705 | goto out; | |
706 | ||
707 | #ifdef WORDS_BIGENDIAN | |
708 | ext2fs_swap_inode_full(current_fs, tmp_inode, | |
709 | tmp_inode, 1, sz); | |
710 | #endif | |
711 | ||
712 | if (sz > EXT2_GOOD_OLD_INODE_SIZE) | |
713 | is_large_inode = 1; | |
714 | ||
715 | retval = ext2fs_inode_csum_set(current_fs, set_ino, | |
716 | tmp_inode); | |
717 | if (retval) | |
718 | goto out; | |
719 | #ifdef WORDS_BIGENDIAN | |
720 | crc = set_inode.i_checksum_lo = | |
721 | ext2fs_swab16(tmp_inode->i_checksum_lo); | |
722 | ||
723 | #else | |
724 | crc = set_inode.i_checksum_lo = tmp_inode->i_checksum_lo; | |
725 | #endif | |
726 | if (is_large_inode && | |
727 | set_inode.i_extra_isize >= | |
728 | (offsetof(struct ext2_inode_large, | |
729 | i_checksum_hi) - | |
730 | EXT2_GOOD_OLD_INODE_SIZE)) { | |
731 | #ifdef WORDS_BIGENDIAN | |
732 | set_inode.i_checksum_lo = | |
733 | ext2fs_swab16(tmp_inode->i_checksum_lo); | |
734 | #else | |
735 | set_inode.i_checksum_hi = tmp_inode->i_checksum_hi; | |
736 | #endif | |
737 | crc |= ((__u32)set_inode.i_checksum_hi) << 16; | |
738 | } | |
739 | printf("Checksum set to 0x%08x\n", crc); | |
740 | out: | |
741 | ext2fs_free_mem(&tmp_inode); | |
742 | return retval; | |
743 | } | |
744 | return parse_uint(info, field, arg); | |
745 | } | |
746 | ||
7dec050a | 747 | static void print_possible_fields(struct field_set_info *fields) |
6e96adcb | 748 | { |
7dec050a TT |
749 | struct field_set_info *ss; |
750 | const char *type, *cmd; | |
751 | FILE *f; | |
08fd3f36 | 752 | char name[40], idx[40]; |
6e96adcb | 753 | |
7dec050a TT |
754 | if (fields == super_fields) { |
755 | type = "Superblock"; | |
756 | cmd = "set_super_value"; | |
c7c1209e | 757 | } else if (fields == inode_fields) { |
7dec050a TT |
758 | type = "Inode"; |
759 | cmd = "set_inode"; | |
7105c183 ES |
760 | } else if (fields == mmp_fields) { |
761 | type = "MMP"; | |
762 | cmd = "set_mmp_value"; | |
c7c1209e TT |
763 | } else { |
764 | type = "Block group descriptor"; | |
765 | cmd = "set_block_group"; | |
7dec050a TT |
766 | } |
767 | f = open_pager(); | |
768 | ||
769 | fprintf(f, "%s fields supported by the %s command:\n", type, cmd); | |
770 | ||
771 | for (ss = fields ; ss->name ; ss++) { | |
6e96adcb TT |
772 | type = "unknown"; |
773 | if (ss->func == parse_string) | |
774 | type = "string"; | |
775 | else if (ss->func == parse_int) | |
776 | type = "integer"; | |
777 | else if (ss->func == parse_uint) | |
778 | type = "unsigned integer"; | |
f61fc0b5 TT |
779 | else if (ss->func == parse_uuid) |
780 | type = "UUID"; | |
781 | else if (ss->func == parse_hashalg) | |
782 | type = "hash algorithm"; | |
7dec050a TT |
783 | else if (ss->func == parse_time) |
784 | type = "date/time"; | |
1d3a9511 TT |
785 | else if (ss->func == parse_bmap) |
786 | type = "set physical->logical block map"; | |
16c581d0 TT |
787 | else if (ss->func == parse_gd_csum) |
788 | type = "unsigned integer OR \"calc\""; | |
08fd3f36 TT |
789 | strcpy(name, ss->name); |
790 | if (ss->flags & FLAG_ARRAY) { | |
efc6f628 | 791 | if (ss->max_idx > 0) |
08fd3f36 TT |
792 | sprintf(idx, "[%d]", ss->max_idx); |
793 | else | |
794 | strcpy(idx, "[]"); | |
795 | strcat(name, idx); | |
796 | } | |
16c581d0 TT |
797 | if (ss->ptr2) |
798 | strcat(name, "[_hi|_lo]"); | |
799 | fprintf(f, "\t%-25s\t%s\n", name, type); | |
6e96adcb | 800 | } |
7dec050a | 801 | close_pager(f); |
6e96adcb TT |
802 | } |
803 | ||
804 | ||
2fcbcb1b TT |
805 | void do_set_super(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)), |
806 | void *infop EXT2FS_ATTR((unused))) | |
c6bd0c97 | 807 | { |
e1018eea TT |
808 | const char *usage = "<field> <value>\n" |
809 | "\t\"set_super_value -l\" will list the names of " | |
810 | "superblock fields\n\twhich can be set."; | |
7dec050a | 811 | static struct field_set_info *ss; |
efc6f628 | 812 | |
6e96adcb | 813 | if ((argc == 2) && !strcmp(argv[1], "-l")) { |
7dec050a | 814 | print_possible_fields(super_fields); |
6e96adcb TT |
815 | return; |
816 | } | |
817 | ||
e1018eea TT |
818 | if (common_args_process(argc, argv, 3, 3, "set_super_value", |
819 | usage, CHECK_FS_RW)) | |
c6bd0c97 TT |
820 | return; |
821 | ||
7dec050a | 822 | if ((ss = find_field(super_fields, argv[1])) == 0) { |
c6bd0c97 TT |
823 | com_err(argv[0], 0, "invalid field specifier: %s", argv[1]); |
824 | return; | |
825 | } | |
826 | set_sb = *current_fs->super; | |
16c581d0 | 827 | if (ss->func(ss, argv[1], argv[2]) == 0) { |
c6bd0c97 TT |
828 | *current_fs->super = set_sb; |
829 | ext2fs_mark_super_dirty(current_fs); | |
830 | } | |
831 | } | |
7dec050a | 832 | |
2fcbcb1b TT |
833 | void do_set_inode(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)), |
834 | void *infop EXT2FS_ATTR((unused))) | |
7dec050a TT |
835 | { |
836 | const char *usage = "<inode> <field> <value>\n" | |
1d3a9511 | 837 | "\t\"set_inode_field -l\" will list the names of " |
7dec050a TT |
838 | "the fields in an ext2 inode\n\twhich can be set."; |
839 | static struct field_set_info *ss; | |
efc6f628 | 840 | |
7dec050a TT |
841 | if ((argc == 2) && !strcmp(argv[1], "-l")) { |
842 | print_possible_fields(inode_fields); | |
843 | return; | |
844 | } | |
845 | ||
846 | if (common_args_process(argc, argv, 4, 4, "set_inode", | |
847 | usage, CHECK_FS_RW)) | |
848 | return; | |
849 | ||
850 | if ((ss = find_field(inode_fields, argv[2])) == 0) { | |
851 | com_err(argv[0], 0, "invalid field specifier: %s", argv[2]); | |
852 | return; | |
853 | } | |
854 | ||
08fd3f36 TT |
855 | set_ino = string_to_inode(argv[1]); |
856 | if (!set_ino) | |
7dec050a TT |
857 | return; |
858 | ||
32917350 TT |
859 | if (debugfs_read_inode2(set_ino, |
860 | (struct ext2_inode *) &set_inode, argv[1], | |
861 | sizeof(set_inode), | |
862 | (ss->flags & FLAG_CSUM) ? | |
863 | READ_INODE_NOCSUM : 0)) | |
7dec050a TT |
864 | return; |
865 | ||
16c581d0 | 866 | if (ss->func(ss, argv[2], argv[3]) == 0) { |
32917350 TT |
867 | debugfs_write_inode2(set_ino, |
868 | (struct ext2_inode *) &set_inode, | |
869 | argv[1], sizeof(set_inode), | |
870 | (ss->flags & FLAG_CSUM) ? | |
871 | WRITE_INODE_NOCSUM : 0); | |
7dec050a TT |
872 | } |
873 | } | |
c7c1209e | 874 | |
2fcbcb1b TT |
875 | void do_set_block_group_descriptor(int argc, char *argv[], |
876 | int sci_idx EXT2FS_ATTR((unused)), | |
877 | void *infop EXT2FS_ATTR((unused))) | |
c7c1209e TT |
878 | { |
879 | const char *usage = "<bg number> <field> <value>\n" | |
7600aa0f | 880 | "\t\"set_block_group -l\" will list the names of " |
c7c1209e | 881 | "the fields in a block group descriptor\n\twhich can be set."; |
16c581d0 | 882 | struct field_set_info *table; |
c7c1209e | 883 | struct field_set_info *ss; |
c7c1209e | 884 | char *end; |
16c581d0 TT |
885 | void *edit, *target; |
886 | int size; | |
887 | ||
888 | /* | |
2bc30417 AD |
889 | * Determine whether we are editing an ext2 or ext4 block group |
890 | * descriptor. Descriptors larger than ext4_group_desc cannot | |
891 | * have their fields edited yet, because they do not have any | |
892 | * names assigned. When that happens, this function needs to | |
893 | * be updated for the new descriptor struct and fields. | |
16c581d0 | 894 | */ |
2bc30417 AD |
895 | if (current_fs && |
896 | EXT2_DESC_SIZE(current_fs->super) >= EXT2_MIN_DESC_SIZE_64BIT) { | |
16c581d0 TT |
897 | table = ext4_bg_fields; |
898 | edit = &set_gd4; | |
899 | size = sizeof(set_gd4); | |
900 | } else { | |
901 | table = ext2_bg_fields; | |
902 | edit = &set_gd; | |
903 | size = sizeof(set_gd); | |
904 | } | |
c7c1209e TT |
905 | |
906 | if ((argc == 2) && !strcmp(argv[1], "-l")) { | |
16c581d0 | 907 | print_possible_fields(table); |
c7c1209e TT |
908 | return; |
909 | } | |
910 | ||
7600aa0f | 911 | if (common_args_process(argc, argv, 4, 4, "set_block_group", |
c7c1209e TT |
912 | usage, CHECK_FS_RW)) |
913 | return; | |
914 | ||
915 | set_bg = strtoul(argv[1], &end, 0); | |
916 | if (*end) { | |
917 | com_err(argv[0], 0, "invalid block group number: %s", argv[1]); | |
918 | return; | |
919 | } | |
920 | ||
921 | if (set_bg >= current_fs->group_desc_count) { | |
922 | com_err(argv[0], 0, "block group number too big: %d", set_bg); | |
923 | return; | |
924 | } | |
925 | ||
16c581d0 | 926 | if ((ss = find_field(table, argv[2])) == 0) { |
c7c1209e TT |
927 | com_err(argv[0], 0, "invalid field specifier: %s", argv[2]); |
928 | return; | |
929 | } | |
930 | ||
16c581d0 TT |
931 | target = ext2fs_group_desc(current_fs, current_fs->group_desc, set_bg); |
932 | memcpy(edit, target, size); | |
933 | if (ss->func(ss, argv[2], argv[3]) == 0) { | |
934 | memcpy(target, edit, size); | |
c7c1209e TT |
935 | ext2fs_mark_super_dirty(current_fs); |
936 | } | |
937 | } | |
0f5eba75 | 938 | |
3cebf9c1 TT |
939 | static errcode_t parse_mmp_clear(struct field_set_info *info, |
940 | char *field EXT2FS_ATTR((unused)), | |
941 | char *arg EXT2FS_ATTR((unused))) | |
0f5eba75 AD |
942 | { |
943 | errcode_t retval; | |
944 | ||
945 | retval = ext2fs_mmp_clear(current_fs); | |
946 | if (retval != 0) | |
947 | com_err("set_mmp_value", retval, "while clearing MMP block\n"); | |
948 | else | |
949 | memcpy(info->ptr, current_fs->mmp_buf, info->size); | |
950 | ||
951 | return 1; /* we don't need the MMP block written again */ | |
952 | } | |
953 | ||
25f291c9 | 954 | #ifdef CONFIG_MMP |
2fcbcb1b TT |
955 | void do_set_mmp_value(int argc, char *argv[], int sci_idx EXT2FS_ATTR((unused)), |
956 | void *infop EXT2FS_ATTR((unused))) | |
0f5eba75 AD |
957 | { |
958 | const char *usage = "<field> <value>\n" | |
959 | "\t\"set_mmp_value -l\" will list the names of " | |
960 | "MMP fields\n\twhich can be set."; | |
961 | static struct field_set_info *smmp; | |
962 | struct mmp_struct *mmp_s; | |
963 | errcode_t retval; | |
964 | ||
965 | if (argc == 2 && strcmp(argv[1], "-l") == 0) { | |
966 | print_possible_fields(mmp_fields); | |
967 | return; | |
968 | } | |
969 | ||
7105c183 ES |
970 | if (check_fs_open(argv[0])) |
971 | return; | |
972 | ||
0f5eba75 AD |
973 | if (current_fs->super->s_mmp_block == 0) { |
974 | com_err(argv[0], 0, "no MMP block allocated\n"); | |
975 | return; | |
976 | } | |
977 | ||
978 | if (common_args_process(argc, argv, 2, 3, "set_mmp_value", | |
979 | usage, CHECK_FS_RW)) | |
980 | return; | |
981 | ||
982 | mmp_s = current_fs->mmp_buf; | |
983 | if (mmp_s == NULL) { | |
984 | retval = ext2fs_get_mem(current_fs->blocksize, &mmp_s); | |
985 | if (retval) { | |
986 | com_err(argv[0], retval, "allocating MMP buffer\n"); | |
987 | return; | |
988 | } | |
989 | retval = ext2fs_mmp_read(current_fs, | |
990 | current_fs->super->s_mmp_block, mmp_s); | |
991 | if (retval) { | |
992 | com_err(argv[0], retval, "reading MMP block %llu.\n", | |
993 | (long long)current_fs->super->s_mmp_block); | |
85b8f7af | 994 | ext2fs_free_mem(&mmp_s); |
0f5eba75 AD |
995 | return; |
996 | } | |
997 | current_fs->mmp_buf = mmp_s; | |
998 | } | |
999 | ||
1000 | smmp = find_field(mmp_fields, argv[1]); | |
1001 | if (smmp == 0) { | |
1002 | com_err(argv[0], 0, "invalid field specifier: %s", argv[1]); | |
1003 | return; | |
1004 | } | |
1005 | ||
1006 | set_mmp = *mmp_s; | |
1007 | if (smmp->func(smmp, argv[1], argv[2]) == 0) { | |
1008 | ext2fs_mmp_write(current_fs, current_fs->super->s_mmp_block, | |
1009 | &set_mmp); | |
1010 | *mmp_s = set_mmp; | |
1011 | } | |
25f291c9 | 1012 | } |
d6a4bcb5 | 1013 | #else |
25f291c9 | 1014 | void do_set_mmp_value(int argc EXT2FS_ATTR((unused)), |
2fcbcb1b TT |
1015 | char *argv[] EXT2FS_ATTR((unused)), |
1016 | int sci_idx EXT2FS_ATTR((unused)), | |
1017 | void *infop EXT2FS_ATTR((unused))) | |
25f291c9 | 1018 | { |
d6a4bcb5 TB |
1019 | fprintf(stdout, "MMP is unsupported, please recompile with " |
1020 | "--enable-mmp\n"); | |
0f5eba75 | 1021 | } |
25f291c9 | 1022 | #endif |
0f5eba75 | 1023 |