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Commit | Line | Data |
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3839e657 TT |
1 | /* |
2 | * pass2.c --- check directory structure | |
efc6f628 | 3 | * |
21c84b71 TT |
4 | * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o |
5 | * | |
6 | * %Begin-Header% | |
7 | * This file may be redistributed under the terms of the GNU Public | |
8 | * License. | |
9 | * %End-Header% | |
efc6f628 | 10 | * |
3839e657 TT |
11 | * Pass 2 of e2fsck iterates through all active directory inodes, and |
12 | * applies to following tests to each directory entry in the directory | |
13 | * blocks in the inodes: | |
14 | * | |
15 | * - The length of the directory entry (rec_len) should be at | |
16 | * least 8 bytes, and no more than the remaining space | |
17 | * left in the directory block. | |
18 | * - The length of the name in the directory entry (name_len) | |
efc6f628 | 19 | * should be less than (rec_len - 8). |
3839e657 TT |
20 | * - The inode number in the directory entry should be within |
21 | * legal bounds. | |
22 | * - The inode number should refer to a in-use inode. | |
23 | * - The first entry should be '.', and its inode should be | |
24 | * the inode of the directory. | |
25 | * - The second entry should be '..'. | |
26 | * | |
27 | * To minimize disk seek time, the directory blocks are processed in | |
28 | * sorted order of block numbers. | |
29 | * | |
30 | * Pass 2 also collects the following information: | |
31 | * - The inode numbers of the subdirectories for each directory. | |
32 | * | |
33 | * Pass 2 relies on the following information from previous passes: | |
34 | * - The directory information collected in pass 1. | |
35 | * - The inode_used_map bitmap | |
36 | * - The inode_bad_map bitmap | |
37 | * - The inode_dir_map bitmap | |
3839e657 TT |
38 | * |
39 | * Pass 2 frees the following data structures | |
40 | * - The inode_bad_map bitmap | |
aa4115a4 | 41 | * - The inode_reg_map bitmap |
3839e657 TT |
42 | */ |
43 | ||
b969b1b8 | 44 | #define _GNU_SOURCE 1 /* get strnlen() */ |
d1154eb4 | 45 | #include "config.h" |
48e6e813 TT |
46 | #include <string.h> |
47 | ||
3839e657 | 48 | #include "e2fsck.h" |
21c84b71 | 49 | #include "problem.h" |
3dca12fb | 50 | #include "support/dict.h" |
3839e657 | 51 | |
aa4115a4 TT |
52 | #ifdef NO_INLINE_FUNCS |
53 | #define _INLINE_ | |
54 | #else | |
55 | #define _INLINE_ inline | |
56 | #endif | |
57 | ||
ad4fa466 | 58 | /* #define DX_DEBUG */ |
8fdc9985 | 59 | |
3839e657 TT |
60 | /* |
61 | * Keeps track of how many times an inode is referenced. | |
62 | */ | |
4035f40b | 63 | static void deallocate_inode(e2fsck_t ctx, ext2_ino_t ino, char* block_buf); |
a5abfe03 DW |
64 | static int check_dir_block2(ext2_filsys fs, |
65 | struct ext2_db_entry2 *dir_blocks_info, | |
66 | void *priv_data); | |
3839e657 | 67 | static int check_dir_block(ext2_filsys fs, |
6dc64392 | 68 | struct ext2_db_entry2 *dir_blocks_info, |
54dc7ca2 | 69 | void *priv_data); |
1b6bf175 | 70 | static int allocate_dir_block(e2fsck_t ctx, |
6dc64392 | 71 | struct ext2_db_entry2 *dir_blocks_info, |
21c84b71 | 72 | char *buf, struct problem_context *pctx); |
8fdc9985 | 73 | static void clear_htree(e2fsck_t ctx, ext2_ino_t ino); |
ad4fa466 TT |
74 | static int htree_depth(struct dx_dir_info *dx_dir, |
75 | struct dx_dirblock_info *dx_db); | |
ea1959f0 | 76 | static EXT2_QSORT_TYPE special_dir_block_cmp(const void *a, const void *b); |
3839e657 | 77 | |
21c84b71 TT |
78 | struct check_dir_struct { |
79 | char *buf; | |
80 | struct problem_context pctx; | |
f8188fff | 81 | int count, max; |
1b6bf175 | 82 | e2fsck_t ctx; |
a5abfe03 DW |
83 | unsigned long long list_offset; |
84 | unsigned long long ra_entries; | |
85 | unsigned long long next_ra_off; | |
efc6f628 | 86 | }; |
21c84b71 | 87 | |
08b21301 | 88 | void e2fsck_pass2(e2fsck_t ctx) |
3839e657 | 89 | { |
a4742691 TT |
90 | struct ext2_super_block *sb = ctx->fs->super; |
91 | struct problem_context pctx; | |
92 | ext2_filsys fs = ctx->fs; | |
93 | char *buf; | |
8bf191e8 | 94 | #ifdef RESOURCE_TRACK |
3839e657 | 95 | struct resource_track rtrack; |
8bf191e8 | 96 | #endif |
21c84b71 | 97 | struct check_dir_struct cd; |
8fdc9985 TT |
98 | struct dx_dir_info *dx_dir; |
99 | struct dx_dirblock_info *dx_db, *dx_parent; | |
830b44f4 | 100 | unsigned int save_type; |
54434927 | 101 | int b; |
ad4fa466 | 102 | int i, depth; |
8fdc9985 TT |
103 | problem_t code; |
104 | int bad_dir; | |
a5abfe03 DW |
105 | int (*check_dir_func)(ext2_filsys fs, |
106 | struct ext2_db_entry2 *dir_blocks_info, | |
107 | void *priv_data); | |
8fdc9985 | 108 | |
6d96b00d | 109 | init_resource_track(&rtrack, ctx->fs->io); |
1b6bf175 TT |
110 | clear_problem_context(&cd.pctx); |
111 | ||
3839e657 TT |
112 | #ifdef MTRACE |
113 | mtrace_print("Pass 2"); | |
114 | #endif | |
115 | ||
1b6bf175 TT |
116 | if (!(ctx->options & E2F_OPT_PREEN)) |
117 | fix_problem(ctx, PR_2_PASS_HEADER, &cd.pctx); | |
118 | ||
efc6f628 | 119 | e2fsck_setup_tdb_icount(ctx, EXT2_ICOUNT_OPT_INCREMENT, |
34b9f796 TT |
120 | &ctx->inode_count); |
121 | if (ctx->inode_count) | |
122 | cd.pctx.errcode = 0; | |
830b44f4 TT |
123 | else { |
124 | e2fsck_set_bitmap_type(fs, EXT2FS_BMAP64_RBTREE, | |
125 | "inode_count", &save_type); | |
efc6f628 | 126 | cd.pctx.errcode = ext2fs_create_icount2(fs, |
34b9f796 | 127 | EXT2_ICOUNT_OPT_INCREMENT, |
1b6bf175 TT |
128 | 0, ctx->inode_link_info, |
129 | &ctx->inode_count); | |
830b44f4 TT |
130 | fs->default_bitmap_type = save_type; |
131 | } | |
1b6bf175 TT |
132 | if (cd.pctx.errcode) { |
133 | fix_problem(ctx, PR_2_ALLOCATE_ICOUNT, &cd.pctx); | |
08b21301 TT |
134 | ctx->flags |= E2F_FLAG_ABORT; |
135 | return; | |
21c84b71 | 136 | } |
bcf9c5d4 | 137 | buf = (char *) e2fsck_allocate_memory(ctx, 2*fs->blocksize, |
54dc7ca2 | 138 | "directory scan buffer"); |
3839e657 | 139 | |
21c84b71 TT |
140 | /* |
141 | * Set up the parent pointer for the root directory, if | |
142 | * present. (If the root directory is not present, we will | |
143 | * create it in pass 3.) | |
144 | */ | |
28db82a8 | 145 | (void) e2fsck_dir_info_set_parent(ctx, EXT2_ROOT_INO, EXT2_ROOT_INO); |
21c84b71 TT |
146 | |
147 | cd.buf = buf; | |
1b6bf175 | 148 | cd.ctx = ctx; |
f75c28de | 149 | cd.count = 1; |
6dc64392 | 150 | cd.max = ext2fs_dblist_count2(fs->dblist); |
a5abfe03 DW |
151 | cd.list_offset = 0; |
152 | cd.ra_entries = ctx->readahead_kb * 1024 / ctx->fs->blocksize; | |
153 | cd.next_ra_off = 0; | |
f75c28de TT |
154 | |
155 | if (ctx->progress) | |
156 | (void) (ctx->progress)(ctx, 2, 0, cd.max); | |
ea1959f0 TT |
157 | |
158 | if (fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) | |
6dc64392 | 159 | ext2fs_dblist_sort2(fs->dblist, special_dir_block_cmp); |
efc6f628 | 160 | |
a5abfe03 DW |
161 | check_dir_func = cd.ra_entries ? check_dir_block2 : check_dir_block; |
162 | cd.pctx.errcode = ext2fs_dblist_iterate2(fs->dblist, check_dir_func, | |
6dc64392 | 163 | &cd); |
49a7360b | 164 | if (ctx->flags & E2F_FLAG_SIGNAL_MASK || ctx->flags & E2F_FLAG_RESTART) |
08b21301 | 165 | return; |
6267ee49 AD |
166 | |
167 | if (ctx->flags & E2F_FLAG_RESTART_LATER) { | |
168 | ctx->flags |= E2F_FLAG_RESTART; | |
169 | return; | |
170 | } | |
171 | ||
1b6bf175 TT |
172 | if (cd.pctx.errcode) { |
173 | fix_problem(ctx, PR_2_DBLIST_ITERATE, &cd.pctx); | |
08b21301 TT |
174 | ctx->flags |= E2F_FLAG_ABORT; |
175 | return; | |
7ac02a5e | 176 | } |
8fdc9985 | 177 | |
8fdc9985 | 178 | for (i=0; (dx_dir = e2fsck_dx_dir_info_iter(ctx, &i)) != 0;) { |
4cae0452 TT |
179 | if (ctx->flags & E2F_FLAG_SIGNAL_MASK) |
180 | return; | |
d02d0195 DW |
181 | if (e2fsck_dir_will_be_rehashed(ctx, dx_dir->ino) || |
182 | dx_dir->numblocks == 0) | |
8fdc9985 TT |
183 | continue; |
184 | clear_problem_context(&pctx); | |
185 | bad_dir = 0; | |
186 | pctx.dir = dx_dir->ino; | |
187 | dx_db = dx_dir->dx_block; | |
188 | if (dx_db->flags & DX_FLAG_REFERENCED) | |
189 | dx_db->flags |= DX_FLAG_DUP_REF; | |
190 | else | |
191 | dx_db->flags |= DX_FLAG_REFERENCED; | |
192 | /* | |
193 | * Find all of the first and last leaf blocks, and | |
194 | * update their parent's min and max hash values | |
195 | */ | |
196 | for (b=0, dx_db = dx_dir->dx_block; | |
197 | b < dx_dir->numblocks; | |
198 | b++, dx_db++) { | |
199 | if ((dx_db->type != DX_DIRBLOCK_LEAF) || | |
200 | !(dx_db->flags & (DX_FLAG_FIRST | DX_FLAG_LAST))) | |
201 | continue; | |
202 | dx_parent = &dx_dir->dx_block[dx_db->parent]; | |
203 | /* | |
204 | * XXX Make sure dx_parent->min_hash > dx_db->min_hash | |
205 | */ | |
206 | if (dx_db->flags & DX_FLAG_FIRST) | |
207 | dx_parent->min_hash = dx_db->min_hash; | |
208 | /* | |
209 | * XXX Make sure dx_parent->max_hash < dx_db->max_hash | |
210 | */ | |
211 | if (dx_db->flags & DX_FLAG_LAST) | |
212 | dx_parent->max_hash = dx_db->max_hash; | |
213 | } | |
efc6f628 | 214 | |
8fdc9985 TT |
215 | for (b=0, dx_db = dx_dir->dx_block; |
216 | b < dx_dir->numblocks; | |
217 | b++, dx_db++) { | |
218 | pctx.blkcount = b; | |
219 | pctx.group = dx_db->parent; | |
220 | code = 0; | |
221 | if (!(dx_db->flags & DX_FLAG_FIRST) && | |
222 | (dx_db->min_hash < dx_db->node_min_hash)) { | |
223 | pctx.blk = dx_db->min_hash; | |
224 | pctx.blk2 = dx_db->node_min_hash; | |
225 | code = PR_2_HTREE_MIN_HASH; | |
226 | fix_problem(ctx, code, &pctx); | |
227 | bad_dir++; | |
228 | } | |
ad4fa466 TT |
229 | if (dx_db->type == DX_DIRBLOCK_LEAF) { |
230 | depth = htree_depth(dx_dir, dx_db); | |
231 | if (depth != dx_dir->depth) { | |
e5e12db9 | 232 | pctx.num = dx_dir->depth; |
ad4fa466 TT |
233 | code = PR_2_HTREE_BAD_DEPTH; |
234 | fix_problem(ctx, code, &pctx); | |
235 | bad_dir++; | |
236 | } | |
237 | } | |
8fdc9985 | 238 | /* |
efc6f628 | 239 | * This test doesn't apply for the root block |
8fdc9985 TT |
240 | * at block #0 |
241 | */ | |
242 | if (b && | |
243 | (dx_db->max_hash > dx_db->node_max_hash)) { | |
244 | pctx.blk = dx_db->max_hash; | |
245 | pctx.blk2 = dx_db->node_max_hash; | |
246 | code = PR_2_HTREE_MAX_HASH; | |
247 | fix_problem(ctx, code, &pctx); | |
503f9e7f | 248 | bad_dir++; |
8fdc9985 TT |
249 | } |
250 | if (!(dx_db->flags & DX_FLAG_REFERENCED)) { | |
251 | code = PR_2_HTREE_NOTREF; | |
252 | fix_problem(ctx, code, &pctx); | |
253 | bad_dir++; | |
254 | } else if (dx_db->flags & DX_FLAG_DUP_REF) { | |
255 | code = PR_2_HTREE_DUPREF; | |
256 | fix_problem(ctx, code, &pctx); | |
257 | bad_dir++; | |
258 | } | |
8fdc9985 TT |
259 | } |
260 | if (bad_dir && fix_problem(ctx, PR_2_HTREE_CLEAR, &pctx)) { | |
261 | clear_htree(ctx, dx_dir->ino); | |
62acaa1d | 262 | dx_dir->numblocks = 0; |
8fdc9985 | 263 | } |
8fdc9985 | 264 | } |
23f75f6e | 265 | e2fsck_free_dx_dir_info(ctx); |
149640fa | 266 | |
c4e3d3f3 | 267 | ext2fs_free_mem(&buf); |
21c84b71 TT |
268 | ext2fs_free_dblist(fs->dblist); |
269 | ||
1b6bf175 TT |
270 | if (ctx->inode_bad_map) { |
271 | ext2fs_free_inode_bitmap(ctx->inode_bad_map); | |
272 | ctx->inode_bad_map = 0; | |
3839e657 | 273 | } |
aa4115a4 TT |
274 | if (ctx->inode_reg_map) { |
275 | ext2fs_free_inode_bitmap(ctx->inode_reg_map); | |
276 | ctx->inode_reg_map = 0; | |
277 | } | |
dbff534e TT |
278 | if (ctx->encrypted_dirs) { |
279 | ext2fs_u32_list_free(ctx->encrypted_dirs); | |
280 | ctx->encrypted_dirs = 0; | |
281 | } | |
a4742691 TT |
282 | |
283 | clear_problem_context(&pctx); | |
284 | if (ctx->large_files) { | |
285 | if (!(sb->s_feature_ro_compat & | |
286 | EXT2_FEATURE_RO_COMPAT_LARGE_FILE) && | |
287 | fix_problem(ctx, PR_2_FEATURE_LARGE_FILES, &pctx)) { | |
288 | sb->s_feature_ro_compat |= | |
289 | EXT2_FEATURE_RO_COMPAT_LARGE_FILE; | |
0cfce7f7 | 290 | fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; |
a4742691 TT |
291 | ext2fs_mark_super_dirty(fs); |
292 | } | |
293 | if (sb->s_rev_level == EXT2_GOOD_OLD_REV && | |
294 | fix_problem(ctx, PR_1_FS_REV_LEVEL, &pctx)) { | |
295 | ext2fs_update_dynamic_rev(fs); | |
296 | ext2fs_mark_super_dirty(fs); | |
297 | } | |
a4742691 | 298 | } |
efc6f628 | 299 | |
9facd076 | 300 | print_resource_track(ctx, _("Pass 2"), &rtrack, fs->io); |
3839e657 TT |
301 | } |
302 | ||
ad4fa466 TT |
303 | #define MAX_DEPTH 32000 |
304 | static int htree_depth(struct dx_dir_info *dx_dir, | |
305 | struct dx_dirblock_info *dx_db) | |
306 | { | |
307 | int depth = 0; | |
308 | ||
309 | while (dx_db->type != DX_DIRBLOCK_ROOT && depth < MAX_DEPTH) { | |
310 | dx_db = &dx_dir->dx_block[dx_db->parent]; | |
311 | depth++; | |
312 | } | |
313 | return depth; | |
314 | } | |
315 | ||
0926668d TT |
316 | static int dict_de_cmp(const void *a, const void *b) |
317 | { | |
520ead37 | 318 | const struct ext2_dir_entry *de_a, *de_b; |
0926668d TT |
319 | int a_len, b_len; |
320 | ||
520ead37 | 321 | de_a = (const struct ext2_dir_entry *) a; |
70f4632b | 322 | a_len = ext2fs_dirent_name_len(de_a); |
520ead37 | 323 | de_b = (const struct ext2_dir_entry *) b; |
70f4632b | 324 | b_len = ext2fs_dirent_name_len(de_b); |
0926668d TT |
325 | |
326 | if (a_len != b_len) | |
327 | return (a_len - b_len); | |
328 | ||
baa14bd1 | 329 | return memcmp(de_a->name, de_b->name, a_len); |
0926668d | 330 | } |
ad4fa466 | 331 | |
ea1959f0 TT |
332 | /* |
333 | * This is special sort function that makes sure that directory blocks | |
334 | * with a dirblock of zero are sorted to the beginning of the list. | |
335 | * This guarantees that the root node of the htree directories are | |
336 | * processed first, so we know what hash version to use. | |
337 | */ | |
338 | static EXT2_QSORT_TYPE special_dir_block_cmp(const void *a, const void *b) | |
339 | { | |
6dc64392 VAH |
340 | const struct ext2_db_entry2 *db_a = |
341 | (const struct ext2_db_entry2 *) a; | |
342 | const struct ext2_db_entry2 *db_b = | |
343 | (const struct ext2_db_entry2 *) b; | |
ea1959f0 TT |
344 | |
345 | if (db_a->blockcnt && !db_b->blockcnt) | |
346 | return 1; | |
347 | ||
348 | if (!db_a->blockcnt && db_b->blockcnt) | |
349 | return -1; | |
efc6f628 | 350 | |
ea1959f0 TT |
351 | if (db_a->blk != db_b->blk) |
352 | return (int) (db_a->blk - db_b->blk); | |
efc6f628 | 353 | |
ea1959f0 TT |
354 | if (db_a->ino != db_b->ino) |
355 | return (int) (db_a->ino - db_b->ino); | |
356 | ||
357 | return (int) (db_a->blockcnt - db_b->blockcnt); | |
358 | } | |
359 | ||
360 | ||
3839e657 TT |
361 | /* |
362 | * Make sure the first entry in the directory is '.', and that the | |
363 | * directory entry is sane. | |
364 | */ | |
1b6bf175 | 365 | static int check_dot(e2fsck_t ctx, |
3839e657 | 366 | struct ext2_dir_entry *dirent, |
86c627ec | 367 | ext2_ino_t ino, struct problem_context *pctx) |
3839e657 TT |
368 | { |
369 | struct ext2_dir_entry *nextdir; | |
8a480350 | 370 | unsigned int rec_len, new_len; |
3c7c6d73 TT |
371 | int status = 0; |
372 | int created = 0; | |
373 | problem_t problem = 0; | |
efc6f628 | 374 | |
21c84b71 TT |
375 | if (!dirent->inode) |
376 | problem = PR_2_MISSING_DOT; | |
70f4632b | 377 | else if ((ext2fs_dirent_name_len(dirent) != 1) || |
21c84b71 TT |
378 | (dirent->name[0] != '.')) |
379 | problem = PR_2_1ST_NOT_DOT; | |
380 | else if (dirent->name[1] != '\0') | |
381 | problem = PR_2_DOT_NULL_TERM; | |
5dd77dbe | 382 | |
8a480350 | 383 | (void) ext2fs_get_rec_len(ctx->fs, dirent, &rec_len); |
21c84b71 | 384 | if (problem) { |
1b6bf175 | 385 | if (fix_problem(ctx, problem, pctx)) { |
5dd77dbe TT |
386 | if (rec_len < 12) |
387 | rec_len = dirent->rec_len = 12; | |
3839e657 | 388 | dirent->inode = ino; |
70f4632b JK |
389 | ext2fs_dirent_set_name_len(dirent, 1); |
390 | ext2fs_dirent_set_file_type(dirent, EXT2_FT_UNKNOWN); | |
3839e657 | 391 | dirent->name[0] = '.'; |
21c84b71 | 392 | dirent->name[1] = '\0'; |
3839e657 TT |
393 | status = 1; |
394 | created = 1; | |
3839e657 TT |
395 | } |
396 | } | |
3839e657 | 397 | if (dirent->inode != ino) { |
1b6bf175 | 398 | if (fix_problem(ctx, PR_2_BAD_INODE_DOT, pctx)) { |
3839e657 TT |
399 | dirent->inode = ino; |
400 | status = 1; | |
21c84b71 | 401 | } |
3839e657 | 402 | } |
5dd77dbe TT |
403 | if (rec_len > 12) { |
404 | new_len = rec_len - 12; | |
3839e657 | 405 | if (new_len > 12) { |
3839e657 | 406 | if (created || |
f8188fff | 407 | fix_problem(ctx, PR_2_SPLIT_DOT, pctx)) { |
3839e657 TT |
408 | nextdir = (struct ext2_dir_entry *) |
409 | ((char *) dirent + 12); | |
410 | dirent->rec_len = 12; | |
8a480350 TT |
411 | (void) ext2fs_set_rec_len(ctx->fs, new_len, |
412 | nextdir); | |
3839e657 | 413 | nextdir->inode = 0; |
70f4632b JK |
414 | ext2fs_dirent_set_name_len(nextdir, 0); |
415 | ext2fs_dirent_set_file_type(nextdir, | |
416 | EXT2_FT_UNKNOWN); | |
3839e657 TT |
417 | status = 1; |
418 | } | |
419 | } | |
420 | } | |
421 | return status; | |
422 | } | |
423 | ||
424 | /* | |
425 | * Make sure the second entry in the directory is '..', and that the | |
426 | * directory entry is sane. We do not check the inode number of '..' | |
427 | * here; this gets done in pass 3. | |
428 | */ | |
1b6bf175 | 429 | static int check_dotdot(e2fsck_t ctx, |
3839e657 | 430 | struct ext2_dir_entry *dirent, |
28db82a8 | 431 | ext2_ino_t ino, struct problem_context *pctx) |
3839e657 | 432 | { |
3c7c6d73 | 433 | problem_t problem = 0; |
cf5301d7 | 434 | unsigned int rec_len; |
efc6f628 | 435 | |
21c84b71 TT |
436 | if (!dirent->inode) |
437 | problem = PR_2_MISSING_DOT_DOT; | |
70f4632b | 438 | else if ((ext2fs_dirent_name_len(dirent) != 2) || |
21c84b71 TT |
439 | (dirent->name[0] != '.') || |
440 | (dirent->name[1] != '.')) | |
441 | problem = PR_2_2ND_NOT_DOT_DOT; | |
442 | else if (dirent->name[2] != '\0') | |
443 | problem = PR_2_DOT_DOT_NULL_TERM; | |
444 | ||
8a480350 | 445 | (void) ext2fs_get_rec_len(ctx->fs, dirent, &rec_len); |
21c84b71 | 446 | if (problem) { |
1b6bf175 | 447 | if (fix_problem(ctx, problem, pctx)) { |
5dd77dbe | 448 | if (rec_len < 12) |
21c84b71 | 449 | dirent->rec_len = 12; |
3839e657 TT |
450 | /* |
451 | * Note: we don't have the parent inode just | |
452 | * yet, so we will fill it in with the root | |
453 | * inode. This will get fixed in pass 3. | |
454 | */ | |
455 | dirent->inode = EXT2_ROOT_INO; | |
70f4632b JK |
456 | ext2fs_dirent_set_name_len(dirent, 2); |
457 | ext2fs_dirent_set_file_type(dirent, EXT2_FT_UNKNOWN); | |
3839e657 TT |
458 | dirent->name[0] = '.'; |
459 | dirent->name[1] = '.'; | |
21c84b71 | 460 | dirent->name[2] = '\0'; |
3839e657 | 461 | return 1; |
efc6f628 | 462 | } |
3839e657 TT |
463 | return 0; |
464 | } | |
28db82a8 TT |
465 | if (e2fsck_dir_info_set_dotdot(ctx, ino, dirent->inode)) { |
466 | fix_problem(ctx, PR_2_NO_DIRINFO, pctx); | |
467 | return -1; | |
468 | } | |
3839e657 TT |
469 | return 0; |
470 | } | |
471 | ||
472 | /* | |
473 | * Check to make sure a directory entry doesn't contain any illegal | |
474 | * characters. | |
475 | */ | |
1b6bf175 | 476 | static int check_name(e2fsck_t ctx, |
3839e657 | 477 | struct ext2_dir_entry *dirent, |
54434927 | 478 | struct problem_context *pctx) |
3839e657 TT |
479 | { |
480 | int i; | |
481 | int fixup = -1; | |
3839e657 | 482 | int ret = 0; |
efc6f628 | 483 | |
70f4632b | 484 | for ( i = 0; i < ext2fs_dirent_name_len(dirent); i++) { |
dbff534e TT |
485 | if (dirent->name[i] != '/' && dirent->name[i] != '\0') |
486 | continue; | |
dbff534e TT |
487 | if (fixup < 0) |
488 | fixup = fix_problem(ctx, PR_2_BAD_NAME, pctx); | |
489 | if (fixup == 0) | |
490 | return 0; | |
491 | dirent->name[i] = '.'; | |
492 | ret = 1; | |
3839e657 TT |
493 | } |
494 | return ret; | |
495 | } | |
496 | ||
e3dd5c6f TT |
497 | static int encrypted_check_name(e2fsck_t ctx, |
498 | struct ext2_dir_entry *dirent, | |
499 | struct problem_context *pctx) | |
500 | { | |
501 | if (ext2fs_dirent_name_len(dirent) < EXT4_CRYPTO_BLOCK_SIZE) { | |
502 | if (fix_problem(ctx, PR_2_BAD_ENCRYPTED_NAME, pctx)) { | |
503 | dirent->inode = 0; | |
504 | return 1; | |
505 | } | |
506 | ext2fs_unmark_valid(ctx->fs); | |
507 | } | |
508 | return 0; | |
509 | } | |
510 | ||
aa4115a4 TT |
511 | /* |
512 | * Check the directory filetype (if present) | |
513 | */ | |
514 | static _INLINE_ int check_filetype(e2fsck_t ctx, | |
54434927 TT |
515 | struct ext2_dir_entry *dirent, |
516 | ext2_ino_t dir_ino EXT2FS_ATTR((unused)), | |
517 | struct problem_context *pctx) | |
aa4115a4 | 518 | { |
70f4632b | 519 | int filetype = ext2fs_dirent_file_type(dirent); |
aa4115a4 TT |
520 | int should_be = EXT2_FT_UNKNOWN; |
521 | struct ext2_inode inode; | |
522 | ||
523 | if (!(ctx->fs->super->s_feature_incompat & | |
7847c1d4 TT |
524 | EXT2_FEATURE_INCOMPAT_FILETYPE)) { |
525 | if (filetype == 0 || | |
526 | !fix_problem(ctx, PR_2_CLEAR_FILETYPE, pctx)) | |
527 | return 0; | |
70f4632b | 528 | ext2fs_dirent_set_file_type(dirent, EXT2_FT_UNKNOWN); |
7847c1d4 TT |
529 | return 1; |
530 | } | |
aa4115a4 | 531 | |
c5d2f50d | 532 | if (ext2fs_test_inode_bitmap2(ctx->inode_dir_map, dirent->inode)) { |
aa4115a4 | 533 | should_be = EXT2_FT_DIR; |
c5d2f50d | 534 | } else if (ext2fs_test_inode_bitmap2(ctx->inode_reg_map, |
aa4115a4 TT |
535 | dirent->inode)) { |
536 | should_be = EXT2_FT_REG_FILE; | |
537 | } else if (ctx->inode_bad_map && | |
c5d2f50d | 538 | ext2fs_test_inode_bitmap2(ctx->inode_bad_map, |
aa4115a4 TT |
539 | dirent->inode)) |
540 | should_be = 0; | |
541 | else { | |
542 | e2fsck_read_inode(ctx, dirent->inode, &inode, | |
543 | "check_filetype"); | |
6fdc7a32 | 544 | should_be = ext2_file_type(inode.i_mode); |
aa4115a4 TT |
545 | } |
546 | if (filetype == should_be) | |
547 | return 0; | |
548 | pctx->num = should_be; | |
549 | ||
550 | if (fix_problem(ctx, filetype ? PR_2_BAD_FILETYPE : PR_2_SET_FILETYPE, | |
551 | pctx) == 0) | |
552 | return 0; | |
efc6f628 | 553 | |
70f4632b | 554 | ext2fs_dirent_set_file_type(dirent, should_be); |
aa4115a4 TT |
555 | return 1; |
556 | } | |
557 | ||
8fdc9985 | 558 | static void parse_int_node(ext2_filsys fs, |
6dc64392 | 559 | struct ext2_db_entry2 *db, |
8fdc9985 TT |
560 | struct check_dir_struct *cd, |
561 | struct dx_dir_info *dx_dir, | |
07307114 | 562 | char *block_buf, int failed_csum) |
8fdc9985 TT |
563 | { |
564 | struct ext2_dx_root_info *root; | |
565 | struct ext2_dx_entry *ent; | |
566 | struct ext2_dx_countlimit *limit; | |
567 | struct dx_dirblock_info *dx_db; | |
ad4fa466 | 568 | int i, expect_limit, count; |
8fdc9985 TT |
569 | blk_t blk; |
570 | ext2_dirhash_t min_hash = 0xffffffff; | |
571 | ext2_dirhash_t max_hash = 0; | |
ad4fa466 | 572 | ext2_dirhash_t hash = 0, prev_hash; |
07307114 | 573 | int csum_size = 0; |
8fdc9985 TT |
574 | |
575 | if (db->blockcnt == 0) { | |
576 | root = (struct ext2_dx_root_info *) (block_buf + 24); | |
efc6f628 | 577 | |
8fdc9985 TT |
578 | #ifdef DX_DEBUG |
579 | printf("Root node dump:\n"); | |
8deb80a5 | 580 | printf("\t Reserved zero: %u\n", root->reserved_zero); |
8fdc9985 TT |
581 | printf("\t Hash Version: %d\n", root->hash_version); |
582 | printf("\t Info length: %d\n", root->info_length); | |
583 | printf("\t Indirect levels: %d\n", root->indirect_levels); | |
584 | printf("\t Flags: %d\n", root->unused_flags); | |
585 | #endif | |
586 | ||
587 | ent = (struct ext2_dx_entry *) (block_buf + 24 + root->info_length); | |
07307114 DW |
588 | |
589 | if (failed_csum && | |
590 | (e2fsck_dir_will_be_rehashed(cd->ctx, cd->pctx.ino) || | |
591 | fix_problem(cd->ctx, PR_2_HTREE_ROOT_CSUM_INVALID, | |
592 | &cd->pctx))) | |
593 | goto clear_and_exit; | |
8fdc9985 TT |
594 | } else { |
595 | ent = (struct ext2_dx_entry *) (block_buf+8); | |
07307114 DW |
596 | |
597 | if (failed_csum && | |
598 | (e2fsck_dir_will_be_rehashed(cd->ctx, cd->pctx.ino) || | |
599 | fix_problem(cd->ctx, PR_2_HTREE_NODE_CSUM_INVALID, | |
600 | &cd->pctx))) | |
601 | goto clear_and_exit; | |
8fdc9985 | 602 | } |
07307114 | 603 | |
8fdc9985 TT |
604 | limit = (struct ext2_dx_countlimit *) ent; |
605 | ||
606 | #ifdef DX_DEBUG | |
efc6f628 | 607 | printf("Number of entries (count): %d\n", |
8132d840 | 608 | ext2fs_le16_to_cpu(limit->count)); |
efc6f628 | 609 | printf("Number of entries (limit): %d\n", |
8132d840 | 610 | ext2fs_le16_to_cpu(limit->limit)); |
8fdc9985 TT |
611 | #endif |
612 | ||
8132d840 | 613 | count = ext2fs_le16_to_cpu(limit->count); |
07307114 DW |
614 | if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super, |
615 | EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) | |
616 | csum_size = sizeof(struct ext2_dx_tail); | |
617 | expect_limit = (fs->blocksize - | |
618 | (csum_size + ((char *) ent - block_buf))) / | |
619 | sizeof(struct ext2_dx_entry); | |
8132d840 TT |
620 | if (ext2fs_le16_to_cpu(limit->limit) != expect_limit) { |
621 | cd->pctx.num = ext2fs_le16_to_cpu(limit->limit); | |
ad4fa466 TT |
622 | if (fix_problem(cd->ctx, PR_2_HTREE_BAD_LIMIT, &cd->pctx)) |
623 | goto clear_and_exit; | |
624 | } | |
8132d840 TT |
625 | if (count > expect_limit) { |
626 | cd->pctx.num = count; | |
ad4fa466 TT |
627 | if (fix_problem(cd->ctx, PR_2_HTREE_BAD_COUNT, &cd->pctx)) |
628 | goto clear_and_exit; | |
629 | count = expect_limit; | |
630 | } | |
efc6f628 | 631 | |
ad4fa466 TT |
632 | for (i=0; i < count; i++) { |
633 | prev_hash = hash; | |
8132d840 | 634 | hash = i ? (ext2fs_le32_to_cpu(ent[i].hash) & ~1) : 0; |
8fdc9985 | 635 | #ifdef DX_DEBUG |
8deb80a5 | 636 | printf("Entry #%d: Hash 0x%08x, block %u\n", i, |
8132d840 | 637 | hash, ext2fs_le32_to_cpu(ent[i].block)); |
8fdc9985 | 638 | #endif |
8132d840 | 639 | blk = ext2fs_le32_to_cpu(ent[i].block) & 0x0ffffff; |
8fdc9985 | 640 | /* Check to make sure the block is valid */ |
977ac873 | 641 | if (blk >= (blk_t) dx_dir->numblocks) { |
b7a00563 | 642 | cd->pctx.blk = blk; |
8fdc9985 | 643 | if (fix_problem(cd->ctx, PR_2_HTREE_BADBLK, |
ad4fa466 TT |
644 | &cd->pctx)) |
645 | goto clear_and_exit; | |
977ac873 | 646 | continue; |
8fdc9985 | 647 | } |
ad4fa466 TT |
648 | if (hash < prev_hash && |
649 | fix_problem(cd->ctx, PR_2_HTREE_HASH_ORDER, &cd->pctx)) | |
650 | goto clear_and_exit; | |
8fdc9985 TT |
651 | dx_db = &dx_dir->dx_block[blk]; |
652 | if (dx_db->flags & DX_FLAG_REFERENCED) { | |
653 | dx_db->flags |= DX_FLAG_DUP_REF; | |
654 | } else { | |
655 | dx_db->flags |= DX_FLAG_REFERENCED; | |
656 | dx_db->parent = db->blockcnt; | |
657 | } | |
658 | if (hash < min_hash) | |
659 | min_hash = hash; | |
660 | if (hash > max_hash) | |
661 | max_hash = hash; | |
662 | dx_db->node_min_hash = hash; | |
8132d840 | 663 | if ((i+1) < count) |
efc6f628 | 664 | dx_db->node_max_hash = |
8132d840 | 665 | ext2fs_le32_to_cpu(ent[i+1].hash) & ~1; |
8fdc9985 TT |
666 | else { |
667 | dx_db->node_max_hash = 0xfffffffe; | |
668 | dx_db->flags |= DX_FLAG_LAST; | |
669 | } | |
670 | if (i == 0) | |
671 | dx_db->flags |= DX_FLAG_FIRST; | |
672 | } | |
673 | #ifdef DX_DEBUG | |
674 | printf("Blockcnt = %d, min hash 0x%08x, max hash 0x%08x\n", | |
675 | db->blockcnt, min_hash, max_hash); | |
676 | #endif | |
677 | dx_db = &dx_dir->dx_block[db->blockcnt]; | |
678 | dx_db->min_hash = min_hash; | |
679 | dx_db->max_hash = max_hash; | |
ad4fa466 TT |
680 | return; |
681 | ||
682 | clear_and_exit: | |
683 | clear_htree(cd->ctx, cd->pctx.ino); | |
684 | dx_dir->numblocks = 0; | |
07307114 | 685 | e2fsck_rehash_dir_later(cd->ctx, cd->pctx.ino); |
8fdc9985 | 686 | } |
aa4115a4 | 687 | |
e70ae99e TT |
688 | /* |
689 | * Given a busted directory, try to salvage it somehow. | |
efc6f628 | 690 | * |
e70ae99e | 691 | */ |
ad4fa466 | 692 | static void salvage_directory(ext2_filsys fs, |
e70ae99e TT |
693 | struct ext2_dir_entry *dirent, |
694 | struct ext2_dir_entry *prev, | |
82ad476d DW |
695 | unsigned int *offset, |
696 | unsigned int block_len) | |
e70ae99e TT |
697 | { |
698 | char *cp = (char *) dirent; | |
8a480350 TT |
699 | int left; |
700 | unsigned int rec_len, prev_rec_len; | |
4a3dc1f0 | 701 | unsigned int name_len; |
e70ae99e | 702 | |
4a3dc1f0 DW |
703 | /* |
704 | * If the space left for the entry is too small to be an entry, | |
705 | * we can't access dirent's fields, so plumb in the values needed | |
706 | * so that the previous entry absorbs this one. | |
707 | */ | |
708 | if (block_len - *offset < EXT2_DIR_ENTRY_HEADER_LEN) { | |
709 | name_len = 0; | |
710 | rec_len = block_len - *offset; | |
711 | } else { | |
712 | name_len = ext2fs_dirent_name_len(dirent); | |
713 | (void) ext2fs_get_rec_len(fs, dirent, &rec_len); | |
714 | } | |
82ad476d | 715 | left = block_len - *offset - rec_len; |
5dd77dbe | 716 | |
e70ae99e TT |
717 | /* |
718 | * Special case of directory entry of size 8: copy what's left | |
719 | * of the directory block up to cover up the invalid hole. | |
720 | */ | |
4a3dc1f0 DW |
721 | if ((left >= 12) && (rec_len == EXT2_DIR_ENTRY_HEADER_LEN)) { |
722 | memmove(cp, cp+EXT2_DIR_ENTRY_HEADER_LEN, left); | |
723 | memset(cp + left, 0, EXT2_DIR_ENTRY_HEADER_LEN); | |
ad4fa466 TT |
724 | return; |
725 | } | |
726 | /* | |
727 | * If the directory entry overruns the end of the directory | |
728 | * block, and the name is small enough to fit, then adjust the | |
729 | * record length. | |
730 | */ | |
731 | if ((left < 0) && | |
4a3dc1f0 DW |
732 | ((int) rec_len + left > EXT2_DIR_ENTRY_HEADER_LEN) && |
733 | ((int) name_len + EXT2_DIR_ENTRY_HEADER_LEN <= (int) rec_len + left) && | |
ad4fa466 TT |
734 | dirent->inode <= fs->super->s_inodes_count && |
735 | strnlen(dirent->name, name_len) == name_len) { | |
8a480350 | 736 | (void) ext2fs_set_rec_len(fs, (int) rec_len + left, dirent); |
ad4fa466 | 737 | return; |
e70ae99e TT |
738 | } |
739 | /* | |
575307cc KS |
740 | * If the record length of the directory entry is a multiple |
741 | * of four, and not too big, such that it is valid, let the | |
742 | * previous directory entry absorb the invalid one. | |
e70ae99e | 743 | */ |
5dd77dbe | 744 | if (prev && rec_len && (rec_len % 4) == 0 && |
82ad476d | 745 | (*offset + rec_len <= block_len)) { |
8a480350 TT |
746 | (void) ext2fs_get_rec_len(fs, prev, &prev_rec_len); |
747 | prev_rec_len += rec_len; | |
748 | (void) ext2fs_set_rec_len(fs, prev_rec_len, prev); | |
5dd77dbe | 749 | *offset += rec_len; |
ad4fa466 | 750 | return; |
e70ae99e TT |
751 | } |
752 | /* | |
753 | * Default salvage method --- kill all of the directory | |
754 | * entries for the rest of the block. We will either try to | |
755 | * absorb it into the previous directory entry, or create a | |
756 | * new empty directory entry the rest of the directory block. | |
757 | */ | |
758 | if (prev) { | |
8a480350 | 759 | (void) ext2fs_get_rec_len(fs, prev, &prev_rec_len); |
82ad476d | 760 | prev_rec_len += block_len - *offset; |
8a480350 | 761 | (void) ext2fs_set_rec_len(fs, prev_rec_len, prev); |
ad4fa466 | 762 | *offset = fs->blocksize; |
e70ae99e | 763 | } else { |
82ad476d | 764 | rec_len = block_len - *offset; |
8a480350 | 765 | (void) ext2fs_set_rec_len(fs, rec_len, dirent); |
70f4632b JK |
766 | ext2fs_dirent_set_name_len(dirent, 0); |
767 | ext2fs_dirent_set_file_type(dirent, EXT2_FT_UNKNOWN); | |
e70ae99e | 768 | dirent->inode = 0; |
e70ae99e | 769 | } |
e70ae99e TT |
770 | } |
771 | ||
d3eb1502 | 772 | #define NEXT_DIRENT(d) ((void *)((char *)(d) + (d)->rec_len)) |
17641bf2 DW |
773 | static errcode_t insert_dirent_tail(ext2_filsys fs, void *dirbuf) |
774 | { | |
775 | struct ext2_dir_entry *d; | |
776 | void *top; | |
777 | struct ext2_dir_entry_tail *t; | |
17641bf2 DW |
778 | |
779 | d = dirbuf; | |
780 | top = EXT2_DIRENT_TAIL(dirbuf, fs->blocksize); | |
781 | ||
d3eb1502 DW |
782 | while (d->rec_len && !(d->rec_len & 0x3) && NEXT_DIRENT(d) <= top) |
783 | d = NEXT_DIRENT(d); | |
17641bf2 DW |
784 | |
785 | if (d != top) { | |
786 | size_t min_size = EXT2_DIR_REC_LEN( | |
787 | ext2fs_dirent_name_len(dirbuf)); | |
d3eb1502 | 788 | if (min_size > top - (void *)d) |
17641bf2 | 789 | return EXT2_ET_DIR_NO_SPACE_FOR_CSUM; |
d3eb1502 | 790 | d->rec_len = top - (void *)d; |
17641bf2 DW |
791 | } |
792 | ||
793 | t = (struct ext2_dir_entry_tail *)top; | |
794 | if (t->det_reserved_zero1 || | |
795 | t->det_rec_len != sizeof(struct ext2_dir_entry_tail) || | |
796 | t->det_reserved_name_len != EXT2_DIR_NAME_LEN_CSUM) | |
797 | ext2fs_initialize_dirent_tail(fs, t); | |
798 | ||
799 | return 0; | |
800 | } | |
d3eb1502 | 801 | #undef NEXT_DIRENT |
17641bf2 | 802 | |
52b0c6e6 DW |
803 | static errcode_t fix_inline_dir_size(e2fsck_t ctx, ext2_ino_t ino, |
804 | size_t *inline_data_size, | |
805 | struct problem_context *pctx, | |
806 | char *buf) | |
807 | { | |
808 | ext2_filsys fs = ctx->fs; | |
809 | struct ext2_inode inode; | |
810 | size_t new_size, old_size; | |
811 | errcode_t retval; | |
812 | ||
813 | old_size = *inline_data_size; | |
0ac4b397 DW |
814 | /* |
815 | * If there's not enough bytes to start the "second" dir block | |
816 | * (in the EA space) then truncate everything to the first block. | |
817 | */ | |
818 | if (old_size > EXT4_MIN_INLINE_DATA_SIZE && | |
819 | old_size < EXT4_MIN_INLINE_DATA_SIZE + | |
820 | EXT2_DIR_REC_LEN(1)) { | |
821 | old_size = EXT4_MIN_INLINE_DATA_SIZE; | |
822 | new_size = old_size; | |
823 | } else | |
824 | /* Increase to the next four-byte boundary for salvaging */ | |
825 | new_size = old_size + (4 - (old_size & 3)); | |
52b0c6e6 DW |
826 | memset(buf + old_size, 0, new_size - old_size); |
827 | retval = ext2fs_inline_data_set(fs, ino, 0, buf, new_size); | |
828 | if (retval == EXT2_ET_INLINE_DATA_NO_SPACE) { | |
0ac4b397 | 829 | /* Or we can't, so truncate. */ |
52b0c6e6 DW |
830 | new_size -= 4; |
831 | retval = ext2fs_inline_data_set(fs, ino, 0, buf, new_size); | |
832 | if (retval) { | |
833 | if (fix_problem(ctx, PR_2_FIX_INLINE_DIR_FAILED, | |
834 | pctx)) { | |
835 | new_size = 0; | |
836 | goto write_inode; | |
837 | } | |
838 | goto err; | |
839 | } | |
840 | } else if (retval) { | |
841 | if (fix_problem(ctx, PR_2_FIX_INLINE_DIR_FAILED, | |
842 | pctx)) { | |
843 | new_size = 0; | |
844 | goto write_inode; | |
845 | } | |
846 | goto err; | |
847 | } | |
848 | ||
849 | write_inode: | |
850 | retval = ext2fs_read_inode(fs, ino, &inode); | |
851 | if (retval) | |
852 | goto err; | |
853 | ||
854 | retval = ext2fs_inode_size_set(fs, &inode, new_size); | |
855 | if (retval) | |
856 | goto err; | |
857 | if (new_size == 0) | |
858 | inode.i_flags &= ~EXT4_INLINE_DATA_FL; | |
859 | retval = ext2fs_write_inode(fs, ino, &inode); | |
860 | if (retval) | |
861 | goto err; | |
862 | *inline_data_size = new_size; | |
863 | ||
864 | err: | |
865 | return retval; | |
866 | } | |
867 | ||
a5abfe03 DW |
868 | static int check_dir_block2(ext2_filsys fs, |
869 | struct ext2_db_entry2 *db, | |
870 | void *priv_data) | |
871 | { | |
872 | int err; | |
873 | struct check_dir_struct *cd = priv_data; | |
874 | ||
875 | if (cd->ra_entries && cd->list_offset >= cd->next_ra_off) { | |
876 | err = e2fsck_readahead_dblist(fs, | |
877 | E2FSCK_RA_DBLIST_IGNORE_BLOCKCNT, | |
878 | fs->dblist, | |
879 | cd->list_offset + cd->ra_entries / 8, | |
880 | cd->ra_entries); | |
881 | if (err) | |
882 | cd->ra_entries = 0; | |
883 | cd->next_ra_off = cd->list_offset + (cd->ra_entries * 7 / 8); | |
884 | } | |
885 | ||
886 | err = check_dir_block(fs, db, priv_data); | |
887 | cd->list_offset++; | |
888 | return err; | |
889 | } | |
890 | ||
3839e657 | 891 | static int check_dir_block(ext2_filsys fs, |
6dc64392 | 892 | struct ext2_db_entry2 *db, |
54dc7ca2 | 893 | void *priv_data) |
3839e657 | 894 | { |
8fdc9985 | 895 | struct dx_dir_info *dx_dir; |
8fdc9985 | 896 | struct dx_dirblock_info *dx_db = 0; |
6582dbe9 | 897 | struct ext2_dir_entry *dirent, *prev, dot, dotdot; |
8fdc9985 | 898 | ext2_dirhash_t hash; |
54434927 | 899 | unsigned int offset = 0; |
3839e657 | 900 | int dir_modified = 0; |
21c84b71 | 901 | int dot_state; |
03fa6f8a | 902 | unsigned int rec_len; |
6dc64392 | 903 | blk64_t block_nr = db->blk; |
86c627ec | 904 | ext2_ino_t ino = db->ino; |
28db82a8 | 905 | ext2_ino_t subdir_parent; |
21c84b71 | 906 | __u16 links; |
54dc7ca2 | 907 | struct check_dir_struct *cd; |
0ac4b397 | 908 | char *buf, *ibuf; |
1b6bf175 | 909 | e2fsck_t ctx; |
3c7c6d73 | 910 | problem_t problem; |
ea1959f0 | 911 | struct ext2_dx_root_info *root; |
e8254bfd | 912 | struct ext2_dx_countlimit *limit; |
0926668d TT |
913 | static dict_t de_dict; |
914 | struct problem_context pctx; | |
915 | int dups_found = 0; | |
28db82a8 | 916 | int ret; |
e8548796 | 917 | int dx_csum_size = 0, de_csum_size = 0; |
81683c6a | 918 | int failed_csum = 0; |
e8548796 | 919 | int is_leaf = 1; |
24997f1c | 920 | size_t inline_data_size = 0; |
6582dbe9 | 921 | int filetype = 0; |
62ad2480 | 922 | int encrypted = 0; |
0ac4b397 | 923 | size_t max_block_size; |
1b6bf175 | 924 | |
54dc7ca2 | 925 | cd = (struct check_dir_struct *) priv_data; |
0ac4b397 | 926 | ibuf = buf = cd->buf; |
1b6bf175 | 927 | ctx = cd->ctx; |
f8188fff | 928 | |
49a7360b | 929 | if (ctx->flags & E2F_FLAG_SIGNAL_MASK || ctx->flags & E2F_FLAG_RESTART) |
4cae0452 | 930 | return DIRENT_ABORT; |
efc6f628 | 931 | |
4cae0452 TT |
932 | if (ctx->progress && (ctx->progress)(ctx, 2, cd->count++, cd->max)) |
933 | return DIRENT_ABORT; | |
efc6f628 | 934 | |
07307114 | 935 | if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super, |
e8548796 | 936 | EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) { |
07307114 | 937 | dx_csum_size = sizeof(struct ext2_dx_tail); |
e8548796 DW |
938 | de_csum_size = sizeof(struct ext2_dir_entry_tail); |
939 | } | |
07307114 | 940 | |
6582dbe9 ZL |
941 | if (EXT2_HAS_INCOMPAT_FEATURE(fs->super, |
942 | EXT2_FEATURE_INCOMPAT_FILETYPE)) | |
943 | filetype = EXT2_FT_DIR << 8; | |
944 | ||
3839e657 | 945 | /* |
efc6f628 | 946 | * Make sure the inode is still in use (could have been |
3839e657 TT |
947 | * deleted in the duplicate/bad blocks pass. |
948 | */ | |
c5d2f50d | 949 | if (!(ext2fs_test_inode_bitmap2(ctx->inode_used_map, ino))) |
3839e657 | 950 | return 0; |
50e1e10f | 951 | |
21c84b71 TT |
952 | cd->pctx.ino = ino; |
953 | cd->pctx.blk = block_nr; | |
954 | cd->pctx.blkcount = db->blockcnt; | |
955 | cd->pctx.ino2 = 0; | |
956 | cd->pctx.dirent = 0; | |
957 | cd->pctx.num = 0; | |
958 | ||
6582dbe9 ZL |
959 | if (EXT2_HAS_INCOMPAT_FEATURE(fs->super, |
960 | EXT4_FEATURE_INCOMPAT_INLINE_DATA)) { | |
961 | errcode_t ec; | |
962 | ||
963 | ec = ext2fs_inline_data_size(fs, ino, &inline_data_size); | |
964 | if (ec && ec != EXT2_ET_NO_INLINE_DATA) | |
965 | return DIRENT_ABORT; | |
966 | } | |
967 | ||
968 | if (db->blk == 0 && !inline_data_size) { | |
1b6bf175 | 969 | if (allocate_dir_block(ctx, db, buf, &cd->pctx)) |
50e1e10f TT |
970 | return 0; |
971 | block_nr = db->blk; | |
972 | } | |
efc6f628 | 973 | |
3839e657 TT |
974 | if (db->blockcnt) |
975 | dot_state = 2; | |
976 | else | |
977 | dot_state = 0; | |
978 | ||
0926668d TT |
979 | if (ctx->dirs_to_hash && |
980 | ext2fs_u32_list_test(ctx->dirs_to_hash, ino)) | |
981 | dups_found++; | |
982 | ||
3839e657 | 983 | #if 0 |
f3db3566 | 984 | printf("In process_dir_block block %lu, #%d, inode %lu\n", block_nr, |
3839e657 TT |
985 | db->blockcnt, ino); |
986 | #endif | |
efc6f628 | 987 | |
f85a9ae6 | 988 | ehandler_operation(_("reading directory block")); |
cd971869 | 989 | if (inline_data_size) { |
4a3dc1f0 | 990 | memset(buf, 0, fs->blocksize - inline_data_size); |
6582dbe9 | 991 | cd->pctx.errcode = ext2fs_inline_data_get(fs, ino, 0, buf, 0); |
cd971869 DW |
992 | if (cd->pctx.errcode) |
993 | goto inline_read_fail; | |
994 | #ifdef WORDS_BIGENDIAN | |
0ac4b397 DW |
995 | if (db->blockcnt) |
996 | goto skip_first_read_swab; | |
cd971869 DW |
997 | *((__u32 *)buf) = ext2fs_le32_to_cpu(*((__u32 *)buf)); |
998 | cd->pctx.errcode = ext2fs_dirent_swab_in2(fs, | |
999 | buf + EXT4_INLINE_DATA_DOTDOT_SIZE, | |
0ac4b397 DW |
1000 | EXT4_MIN_INLINE_DATA_SIZE - EXT4_INLINE_DATA_DOTDOT_SIZE, |
1001 | 0); | |
1002 | if (cd->pctx.errcode) | |
1003 | goto inline_read_fail; | |
1004 | skip_first_read_swab: | |
1005 | if (inline_data_size <= EXT4_MIN_INLINE_DATA_SIZE || | |
1006 | !db->blockcnt) | |
1007 | goto inline_read_fail; | |
1008 | cd->pctx.errcode = ext2fs_dirent_swab_in2(fs, | |
1009 | buf + EXT4_MIN_INLINE_DATA_SIZE, | |
1010 | inline_data_size - EXT4_MIN_INLINE_DATA_SIZE, | |
cd971869 DW |
1011 | 0); |
1012 | #endif | |
1013 | } else | |
6582dbe9 ZL |
1014 | cd->pctx.errcode = ext2fs_read_dir_block4(fs, block_nr, |
1015 | buf, 0, ino); | |
cd971869 | 1016 | inline_read_fail: |
52b0c6e6 DW |
1017 | pctx.ino = ino; |
1018 | pctx.num = inline_data_size; | |
0ac4b397 DW |
1019 | if (((inline_data_size & 3) || |
1020 | (inline_data_size > EXT4_MIN_INLINE_DATA_SIZE && | |
1021 | inline_data_size < EXT4_MIN_INLINE_DATA_SIZE + | |
1022 | EXT2_DIR_REC_LEN(1))) && | |
52b0c6e6 DW |
1023 | fix_problem(ctx, PR_2_BAD_INLINE_DIR_SIZE, &pctx)) { |
1024 | errcode_t err = fix_inline_dir_size(ctx, ino, | |
1025 | &inline_data_size, &pctx, | |
1026 | buf); | |
1027 | if (err) | |
1028 | return DIRENT_ABORT; | |
1029 | ||
1030 | } | |
e94bc631 | 1031 | ehandler_operation(0); |
b9852cd8 TT |
1032 | if (cd->pctx.errcode == EXT2_ET_DIR_CORRUPTED) |
1033 | cd->pctx.errcode = 0; /* We'll handle this ourselves */ | |
81683c6a DW |
1034 | else if (cd->pctx.errcode == EXT2_ET_DIR_CSUM_INVALID) { |
1035 | cd->pctx.errcode = 0; /* We'll handle this ourselves */ | |
1036 | failed_csum = 1; | |
1037 | } | |
1b6bf175 | 1038 | if (cd->pctx.errcode) { |
e8548796 | 1039 | char *buf2; |
08b21301 TT |
1040 | if (!fix_problem(ctx, PR_2_READ_DIRBLOCK, &cd->pctx)) { |
1041 | ctx->flags |= E2F_FLAG_ABORT; | |
1042 | return DIRENT_ABORT; | |
1043 | } | |
e8548796 DW |
1044 | ext2fs_new_dir_block(fs, db->blockcnt == 0 ? ino : 0, |
1045 | EXT2_ROOT_INO, &buf2); | |
1046 | memcpy(buf, buf2, fs->blocksize); | |
1047 | ext2fs_free_mem(&buf2); | |
3839e657 | 1048 | } |
8fdc9985 | 1049 | dx_dir = e2fsck_get_dx_dir_info(ctx, ino); |
62acaa1d | 1050 | if (dx_dir && dx_dir->numblocks) { |
8fdc9985 | 1051 | if (db->blockcnt >= dx_dir->numblocks) { |
ea9085c7 | 1052 | pctx.dir = ino; |
efc6f628 | 1053 | if (fix_problem(ctx, PR_2_UNEXPECTED_HTREE_BLOCK, |
d45edec0 TT |
1054 | &pctx)) { |
1055 | clear_htree(ctx, ino); | |
1056 | dx_dir->numblocks = 0; | |
1057 | dx_db = 0; | |
1058 | goto out_htree; | |
1059 | } | |
1060 | fatal_error(ctx, _("Can not continue.")); | |
8fdc9985 TT |
1061 | } |
1062 | dx_db = &dx_dir->dx_block[db->blockcnt]; | |
1063 | dx_db->type = DX_DIRBLOCK_LEAF; | |
1064 | dx_db->phys = block_nr; | |
1065 | dx_db->min_hash = ~0; | |
1066 | dx_db->max_hash = 0; | |
efc6f628 | 1067 | |
8fdc9985 | 1068 | dirent = (struct ext2_dir_entry *) buf; |
8a480350 | 1069 | (void) ext2fs_get_rec_len(fs, dirent, &rec_len); |
e8254bfd | 1070 | limit = (struct ext2_dx_countlimit *) (buf+8); |
8fdc9985 | 1071 | if (db->blockcnt == 0) { |
ea1959f0 | 1072 | root = (struct ext2_dx_root_info *) (buf + 24); |
8fdc9985 TT |
1073 | dx_db->type = DX_DIRBLOCK_ROOT; |
1074 | dx_db->flags |= DX_FLAG_FIRST | DX_FLAG_LAST; | |
ea1959f0 TT |
1075 | if ((root->reserved_zero || |
1076 | root->info_length < 8 || | |
1077 | root->indirect_levels > 1) && | |
1078 | fix_problem(ctx, PR_2_HTREE_BAD_ROOT, &cd->pctx)) { | |
1079 | clear_htree(ctx, ino); | |
1080 | dx_dir->numblocks = 0; | |
1081 | dx_db = 0; | |
f77704e4 | 1082 | } |
ea1959f0 | 1083 | dx_dir->hashversion = root->hash_version; |
f77704e4 TT |
1084 | if ((dx_dir->hashversion <= EXT2_HASH_TEA) && |
1085 | (fs->super->s_flags & EXT2_FLAGS_UNSIGNED_HASH)) | |
1086 | dx_dir->hashversion += 3; | |
ad4fa466 | 1087 | dx_dir->depth = root->indirect_levels + 1; |
8fdc9985 | 1088 | } else if ((dirent->inode == 0) && |
5dd77dbe | 1089 | (rec_len == fs->blocksize) && |
70f4632b | 1090 | (ext2fs_dirent_name_len(dirent) == 0) && |
efc6f628 | 1091 | (ext2fs_le16_to_cpu(limit->limit) == |
07307114 | 1092 | ((fs->blocksize - (8 + dx_csum_size)) / |
8132d840 | 1093 | sizeof(struct ext2_dx_entry)))) |
8fdc9985 | 1094 | dx_db->type = DX_DIRBLOCK_NODE; |
e8548796 | 1095 | is_leaf = 0; |
8fdc9985 | 1096 | } |
d45edec0 | 1097 | out_htree: |
3839e657 | 1098 | |
7f43a46f DW |
1099 | /* Leaf node with no space for csum? Rebuild dirs in pass 3A. */ |
1100 | if (is_leaf && !inline_data_size && failed_csum && | |
1101 | !ext2fs_dirent_has_tail(fs, (struct ext2_dir_entry *)buf)) { | |
1102 | de_csum_size = 0; | |
d02d0195 DW |
1103 | if (e2fsck_dir_will_be_rehashed(ctx, ino)) { |
1104 | failed_csum = 0; | |
1105 | goto skip_checksum; | |
1106 | } | |
1107 | if (!fix_problem(cd->ctx, PR_2_LEAF_NODE_MISSING_CSUM, | |
7f43a46f | 1108 | &cd->pctx)) |
e8548796 | 1109 | goto skip_checksum; |
7f43a46f | 1110 | e2fsck_rehash_dir_later(ctx, ino); |
d02d0195 | 1111 | failed_csum = 0; |
7f43a46f | 1112 | goto skip_checksum; |
e8548796 DW |
1113 | } |
1114 | /* htree nodes don't use fake dirents to store checksums */ | |
1115 | if (!is_leaf) | |
1116 | de_csum_size = 0; | |
1117 | ||
1118 | skip_checksum: | |
0ac4b397 DW |
1119 | if (inline_data_size) { |
1120 | if (db->blockcnt) { | |
1121 | buf += EXT4_MIN_INLINE_DATA_SIZE; | |
1122 | max_block_size = inline_data_size - EXT4_MIN_INLINE_DATA_SIZE; | |
1123 | /* Zero-length second block, just exit */ | |
1124 | if (max_block_size == 0) | |
1125 | return 0; | |
1126 | } else { | |
1127 | max_block_size = EXT4_MIN_INLINE_DATA_SIZE; | |
1128 | } | |
1129 | } else | |
1130 | max_block_size = fs->blocksize - de_csum_size; | |
1131 | ||
62ad2480 TT |
1132 | if (ctx->encrypted_dirs) |
1133 | encrypted = ext2fs_u32_list_test(ctx->encrypted_dirs, ino); | |
1134 | ||
0926668d | 1135 | dict_init(&de_dict, DICTCOUNT_T_MAX, dict_de_cmp); |
e70ae99e | 1136 | prev = 0; |
3839e657 | 1137 | do { |
3971bfe8 | 1138 | dgrp_t group; |
49a7360b | 1139 | ext2_ino_t first_unused_inode; |
70f4632b | 1140 | unsigned int name_len; |
49a7360b | 1141 | |
1b6bf175 | 1142 | problem = 0; |
6582dbe9 ZL |
1143 | if (!inline_data_size || dot_state > 1) { |
1144 | dirent = (struct ext2_dir_entry *) (buf + offset); | |
4a3dc1f0 DW |
1145 | /* |
1146 | * If there's not even space for the entry header, | |
1147 | * force salvaging this dir. | |
1148 | */ | |
1149 | if (max_block_size - offset < EXT2_DIR_ENTRY_HEADER_LEN) | |
1150 | rec_len = EXT2_DIR_REC_LEN(1); | |
1151 | else | |
1152 | (void) ext2fs_get_rec_len(fs, dirent, &rec_len); | |
6582dbe9 ZL |
1153 | cd->pctx.dirent = dirent; |
1154 | cd->pctx.num = offset; | |
4a3dc1f0 | 1155 | if ((offset + rec_len > max_block_size) || |
6582dbe9 ZL |
1156 | (rec_len < 12) || |
1157 | ((rec_len % 4) != 0) || | |
4a3dc1f0 | 1158 | ((ext2fs_dirent_name_len(dirent) + EXT2_DIR_ENTRY_HEADER_LEN) > rec_len)) { |
82ad476d DW |
1159 | if (fix_problem(ctx, PR_2_DIR_CORRUPTED, |
1160 | &cd->pctx)) { | |
4348709c DW |
1161 | #ifdef WORDS_BIGENDIAN |
1162 | /* | |
1163 | * On big-endian systems, if the dirent | |
1164 | * swap routine finds a rec_len that it | |
1165 | * doesn't like, it continues | |
1166 | * processing the block as if rec_len | |
4a3dc1f0 | 1167 | * == EXT2_DIR_ENTRY_HEADER_LEN. This means that the name |
4348709c DW |
1168 | * field gets byte swapped, which means |
1169 | * that salvage will not detect the | |
1170 | * correct name length (unless the name | |
1171 | * has a length that's an exact | |
1172 | * multiple of four bytes), and it'll | |
1173 | * discard the entry (unnecessarily) | |
1174 | * and the rest of the dirent block. | |
1175 | * Therefore, swap the rest of the | |
1176 | * block back to disk order, run | |
1177 | * salvage, and re-swap anything after | |
1178 | * the salvaged dirent. | |
1179 | */ | |
1180 | int need_reswab = 0; | |
4a3dc1f0 | 1181 | if (rec_len < EXT2_DIR_ENTRY_HEADER_LEN || rec_len % 4) { |
4348709c DW |
1182 | need_reswab = 1; |
1183 | ext2fs_dirent_swab_in2(fs, | |
4a3dc1f0 DW |
1184 | ((char *)dirent) + EXT2_DIR_ENTRY_HEADER_LEN, |
1185 | max_block_size - offset - EXT2_DIR_ENTRY_HEADER_LEN, | |
4348709c DW |
1186 | 0); |
1187 | } | |
1188 | #endif | |
82ad476d DW |
1189 | salvage_directory(fs, dirent, prev, |
1190 | &offset, | |
3a748dfc | 1191 | max_block_size); |
4348709c DW |
1192 | #ifdef WORDS_BIGENDIAN |
1193 | if (need_reswab) { | |
1194 | (void) ext2fs_get_rec_len(fs, | |
1195 | dirent, &rec_len); | |
1196 | ext2fs_dirent_swab_in2(fs, | |
1197 | ((char *)dirent) + offset + rec_len, | |
1198 | max_block_size - offset - rec_len, | |
1199 | 0); | |
1200 | } | |
1201 | #endif | |
6582dbe9 ZL |
1202 | dir_modified++; |
1203 | continue; | |
1204 | } else | |
1205 | goto abort_free_dict; | |
1206 | } | |
1207 | } else { | |
1208 | if (dot_state == 0) { | |
1209 | memset(&dot, 0, sizeof(dot)); | |
1210 | dirent = ˙ | |
1211 | dirent->inode = ino; | |
1212 | dirent->rec_len = EXT2_DIR_REC_LEN(1); | |
1213 | dirent->name_len = 1 | filetype; | |
1214 | dirent->name[0] = '.'; | |
1215 | } else if (dot_state == 1) { | |
1216 | memset(&dotdot, 0, sizeof(dotdot)); | |
1217 | dirent = &dotdot; | |
1218 | dirent->inode = | |
1219 | ((struct ext2_dir_entry *)buf)->inode; | |
1220 | dirent->rec_len = EXT2_DIR_REC_LEN(2); | |
1221 | dirent->name_len = 2 | filetype; | |
1222 | dirent->name[0] = '.'; | |
1223 | dirent->name[1] = '.'; | |
1224 | } else { | |
1225 | fatal_error(ctx, _("Can not continue.")); | |
1226 | } | |
1227 | cd->pctx.dirent = dirent; | |
1228 | cd->pctx.num = offset; | |
3839e657 | 1229 | } |
50e1e10f | 1230 | |
e70ae99e | 1231 | if (dot_state == 0) { |
1b6bf175 | 1232 | if (check_dot(ctx, dirent, ino, &cd->pctx)) |
3839e657 | 1233 | dir_modified++; |
e70ae99e | 1234 | } else if (dot_state == 1) { |
28db82a8 TT |
1235 | ret = check_dotdot(ctx, dirent, ino, &cd->pctx); |
1236 | if (ret < 0) | |
0926668d | 1237 | goto abort_free_dict; |
28db82a8 | 1238 | if (ret) |
3839e657 TT |
1239 | dir_modified++; |
1240 | } else if (dirent->inode == ino) { | |
1b6bf175 TT |
1241 | problem = PR_2_LINK_DOT; |
1242 | if (fix_problem(ctx, PR_2_LINK_DOT, &cd->pctx)) { | |
3839e657 TT |
1243 | dirent->inode = 0; |
1244 | dir_modified++; | |
21c84b71 | 1245 | goto next; |
3839e657 TT |
1246 | } |
1247 | } | |
efc6f628 | 1248 | if (!dirent->inode) |
3839e657 | 1249 | goto next; |
efc6f628 | 1250 | |
3839e657 TT |
1251 | /* |
1252 | * Make sure the inode listed is a legal one. | |
efc6f628 | 1253 | */ |
70f4632b | 1254 | name_len = ext2fs_dirent_name_len(dirent); |
3839e657 | 1255 | if (((dirent->inode != EXT2_ROOT_INO) && |
7f88b043 | 1256 | (dirent->inode < EXT2_FIRST_INODE(fs->super))) || |
3839e657 | 1257 | (dirent->inode > fs->super->s_inodes_count)) { |
1b6bf175 | 1258 | problem = PR_2_BAD_INO; |
1b6bf175 | 1259 | } else if (ctx->inode_bb_map && |
c5d2f50d | 1260 | (ext2fs_test_inode_bitmap2(ctx->inode_bb_map, |
1b6bf175 TT |
1261 | dirent->inode))) { |
1262 | /* | |
1263 | * If the inode is in a bad block, offer to | |
1264 | * clear it. | |
1265 | */ | |
1266 | problem = PR_2_BB_INODE; | |
70f4632b | 1267 | } else if ((dot_state > 1) && (name_len == 1) && |
1b6bf175 TT |
1268 | (dirent->name[0] == '.')) { |
1269 | /* | |
1270 | * If there's a '.' entry in anything other | |
1271 | * than the first directory entry, it's a | |
1272 | * duplicate entry that should be removed. | |
1273 | */ | |
1274 | problem = PR_2_DUP_DOT; | |
70f4632b | 1275 | } else if ((dot_state > 1) && (name_len == 2) && |
efc6f628 | 1276 | (dirent->name[0] == '.') && |
1b6bf175 TT |
1277 | (dirent->name[1] == '.')) { |
1278 | /* | |
1279 | * If there's a '..' entry in anything other | |
1280 | * than the second directory entry, it's a | |
1281 | * duplicate entry that should be removed. | |
1282 | */ | |
1283 | problem = PR_2_DUP_DOT_DOT; | |
e70ae99e | 1284 | } else if ((dot_state > 1) && |
1b6bf175 TT |
1285 | (dirent->inode == EXT2_ROOT_INO)) { |
1286 | /* | |
1287 | * Don't allow links to the root directory. | |
1288 | * We check this specially to make sure we | |
1289 | * catch this error case even if the root | |
1290 | * directory hasn't been created yet. | |
1291 | */ | |
1292 | problem = PR_2_LINK_ROOT; | |
70f4632b | 1293 | } else if ((dot_state > 1) && (name_len == 0)) { |
c40db6d5 TT |
1294 | /* |
1295 | * Don't allow zero-length directory names. | |
1296 | */ | |
1297 | problem = PR_2_NULL_NAME; | |
21c84b71 TT |
1298 | } |
1299 | ||
1b6bf175 TT |
1300 | if (problem) { |
1301 | if (fix_problem(ctx, problem, &cd->pctx)) { | |
21c84b71 TT |
1302 | dirent->inode = 0; |
1303 | dir_modified++; | |
1304 | goto next; | |
1b6bf175 TT |
1305 | } else { |
1306 | ext2fs_unmark_valid(fs); | |
1307 | if (problem == PR_2_BAD_INO) | |
1308 | goto next; | |
21c84b71 | 1309 | } |
3839e657 TT |
1310 | } |
1311 | ||
1312 | /* | |
1313 | * If the inode was marked as having bad fields in | |
1314 | * pass1, process it and offer to fix/clear it. | |
1315 | * (We wait until now so that we can display the | |
1316 | * pathname to the user.) | |
1317 | */ | |
1b6bf175 | 1318 | if (ctx->inode_bad_map && |
c5d2f50d | 1319 | ext2fs_test_inode_bitmap2(ctx->inode_bad_map, |
3839e657 | 1320 | dirent->inode)) { |
e72a9ba3 | 1321 | if (e2fsck_process_bad_inode(ctx, ino, |
bcf9c5d4 TT |
1322 | dirent->inode, |
1323 | buf + fs->blocksize)) { | |
3839e657 TT |
1324 | dirent->inode = 0; |
1325 | dir_modified++; | |
1326 | goto next; | |
1327 | } | |
a02ce9df | 1328 | if (ctx->flags & E2F_FLAG_SIGNAL_MASK) |
08b21301 | 1329 | return DIRENT_ABORT; |
3839e657 TT |
1330 | } |
1331 | ||
49a7360b JS |
1332 | group = ext2fs_group_of_ino(fs, dirent->inode); |
1333 | first_unused_inode = group * fs->super->s_inodes_per_group + | |
1334 | 1 + fs->super->s_inodes_per_group - | |
d7cca6b0 | 1335 | ext2fs_bg_itable_unused(fs, group); |
49a7360b JS |
1336 | cd->pctx.group = group; |
1337 | ||
1338 | /* | |
42e89ce7 TT |
1339 | * Check if the inode was missed out because |
1340 | * _INODE_UNINIT flag was set or bg_itable_unused was | |
1341 | * incorrect. If so, clear the _INODE_UNINIT flag and | |
1342 | * restart e2fsck. In the future it would be nice if | |
1343 | * we could call a function in pass1.c that checks the | |
1344 | * newly visible inodes. | |
49a7360b | 1345 | */ |
cd65a24e | 1346 | if (ext2fs_bg_flags_test(fs, group, EXT2_BG_INODE_UNINIT)) { |
6267ee49 | 1347 | pctx.num = dirent->inode; |
49a7360b JS |
1348 | if (fix_problem(ctx, PR_2_INOREF_BG_INO_UNINIT, |
1349 | &cd->pctx)){ | |
e633b58a | 1350 | ext2fs_bg_flags_clear(fs, group, |
732c8cd5 | 1351 | EXT2_BG_INODE_UNINIT); |
42e89ce7 | 1352 | ext2fs_mark_super_dirty(fs); |
6267ee49 | 1353 | ctx->flags |= E2F_FLAG_RESTART_LATER; |
49a7360b JS |
1354 | } else { |
1355 | ext2fs_unmark_valid(fs); | |
1356 | if (problem == PR_2_BAD_INO) | |
1357 | goto next; | |
1358 | } | |
1359 | } else if (dirent->inode >= first_unused_inode) { | |
6267ee49 | 1360 | pctx.num = dirent->inode; |
49a7360b | 1361 | if (fix_problem(ctx, PR_2_INOREF_IN_UNUSED, &cd->pctx)){ |
d7cca6b0 | 1362 | ext2fs_bg_itable_unused_set(fs, group, 0); |
49a7360b | 1363 | ext2fs_mark_super_dirty(fs); |
6267ee49 | 1364 | ctx->flags |= E2F_FLAG_RESTART_LATER; |
49a7360b JS |
1365 | } else { |
1366 | ext2fs_unmark_valid(fs); | |
1367 | if (problem == PR_2_BAD_INO) | |
1368 | goto next; | |
1369 | } | |
1370 | } | |
1371 | ||
0433c1f1 TT |
1372 | /* |
1373 | * Offer to clear unused inodes; if we are going to be | |
1374 | * restarting the scan due to bg_itable_unused being | |
1375 | * wrong, then don't clear any inodes to avoid zapping | |
1376 | * inodes that were skipped during pass1 due to an | |
1377 | * incorrect bg_itable_unused; we'll get any real | |
1378 | * problems after we restart. | |
1379 | */ | |
1380 | if (!(ctx->flags & E2F_FLAG_RESTART_LATER) && | |
97d26ce9 TT |
1381 | !(ext2fs_test_inode_bitmap2(ctx->inode_used_map, |
1382 | dirent->inode))) | |
49a7360b | 1383 | problem = PR_2_UNUSED_INODE; |
49a7360b JS |
1384 | |
1385 | if (problem) { | |
1386 | if (fix_problem(ctx, problem, &cd->pctx)) { | |
1387 | dirent->inode = 0; | |
1388 | dir_modified++; | |
1389 | goto next; | |
1390 | } else { | |
1391 | ext2fs_unmark_valid(fs); | |
1392 | if (problem == PR_2_BAD_INO) | |
1393 | goto next; | |
1394 | } | |
1395 | } | |
1396 | ||
25f291c9 | 1397 | if (!encrypted && check_name(ctx, dirent, &cd->pctx)) |
1b6bf175 TT |
1398 | dir_modified++; |
1399 | ||
e3dd5c6f TT |
1400 | if (encrypted && (dot_state) > 1 && |
1401 | encrypted_check_name(ctx, dirent, &cd->pctx)) { | |
1402 | dir_modified++; | |
1403 | goto next; | |
1404 | } | |
1405 | ||
aa4115a4 TT |
1406 | if (check_filetype(ctx, dirent, ino, &cd->pctx)) |
1407 | dir_modified++; | |
1408 | ||
8fdc9985 | 1409 | if (dx_db) { |
437651ad TT |
1410 | ext2fs_dirhash(dx_dir->hashversion, dirent->name, |
1411 | ext2fs_dirent_name_len(dirent), | |
1412 | fs->super->s_hash_seed, &hash, 0); | |
8fdc9985 TT |
1413 | if (hash < dx_db->min_hash) |
1414 | dx_db->min_hash = hash; | |
1415 | if (hash > dx_db->max_hash) | |
1416 | dx_db->max_hash = hash; | |
1417 | } | |
8fdc9985 | 1418 | |
3839e657 TT |
1419 | /* |
1420 | * If this is a directory, then mark its parent in its | |
1421 | * dir_info structure. If the parent field is already | |
1422 | * filled in, then this directory has more than one | |
1423 | * hard link. We assume the first link is correct, | |
1424 | * and ask the user if he/she wants to clear this one. | |
1425 | */ | |
e70ae99e | 1426 | if ((dot_state > 1) && |
c5d2f50d | 1427 | (ext2fs_test_inode_bitmap2(ctx->inode_dir_map, |
3839e657 | 1428 | dirent->inode))) { |
28db82a8 TT |
1429 | if (e2fsck_dir_info_get_parent(ctx, dirent->inode, |
1430 | &subdir_parent)) { | |
1b6bf175 TT |
1431 | cd->pctx.ino = dirent->inode; |
1432 | fix_problem(ctx, PR_2_NO_DIRINFO, &cd->pctx); | |
0926668d | 1433 | goto abort_free_dict; |
3839e657 | 1434 | } |
28db82a8 TT |
1435 | if (subdir_parent) { |
1436 | cd->pctx.ino2 = subdir_parent; | |
1b6bf175 | 1437 | if (fix_problem(ctx, PR_2_LINK_DIR, |
21c84b71 | 1438 | &cd->pctx)) { |
3839e657 TT |
1439 | dirent->inode = 0; |
1440 | dir_modified++; | |
1441 | goto next; | |
21c84b71 TT |
1442 | } |
1443 | cd->pctx.ino2 = 0; | |
28db82a8 | 1444 | } else { |
efc6f628 | 1445 | (void) e2fsck_dir_info_set_parent(ctx, |
28db82a8 TT |
1446 | dirent->inode, ino); |
1447 | } | |
3839e657 | 1448 | } |
0926668d TT |
1449 | |
1450 | if (dups_found) { | |
1451 | ; | |
1452 | } else if (dict_lookup(&de_dict, dirent)) { | |
1453 | clear_problem_context(&pctx); | |
1454 | pctx.ino = ino; | |
1455 | pctx.dirent = dirent; | |
1456 | fix_problem(ctx, PR_2_REPORT_DUP_DIRENT, &pctx); | |
e8548796 | 1457 | e2fsck_rehash_dir_later(ctx, ino); |
0926668d TT |
1458 | dups_found++; |
1459 | } else | |
1460 | dict_alloc_insert(&de_dict, dirent, dirent); | |
efc6f628 | 1461 | |
1b6bf175 TT |
1462 | ext2fs_icount_increment(ctx->inode_count, dirent->inode, |
1463 | &links); | |
21c84b71 | 1464 | if (links > 1) |
1b6bf175 TT |
1465 | ctx->fs_links_count++; |
1466 | ctx->fs_total_count++; | |
3839e657 | 1467 | next: |
e70ae99e | 1468 | prev = dirent; |
5dd77dbe | 1469 | if (dir_modified) |
8a480350 | 1470 | (void) ext2fs_get_rec_len(fs, dirent, &rec_len); |
6582dbe9 ZL |
1471 | if (!inline_data_size || dot_state > 1) { |
1472 | offset += rec_len; | |
1473 | } else { | |
6698374c | 1474 | if (dot_state == 1) { |
6582dbe9 | 1475 | offset = 4; |
6698374c DW |
1476 | /* |
1477 | * If we get here, we're checking an inline | |
1478 | * directory and we've just checked a (fake) | |
1479 | * dotdot entry that we created on the stack. | |
1480 | * Therefore set 'prev' to NULL so that if we | |
1481 | * call salvage_directory on the next entry, | |
1482 | * it won't try to absorb the next entry into | |
1483 | * the on-stack dotdot entry. | |
1484 | */ | |
1485 | prev = NULL; | |
1486 | } | |
6582dbe9 | 1487 | } |
e70ae99e | 1488 | dot_state++; |
0ac4b397 | 1489 | } while (offset < max_block_size); |
3839e657 TT |
1490 | #if 0 |
1491 | printf("\n"); | |
1492 | #endif | |
8fdc9985 TT |
1493 | if (dx_db) { |
1494 | #ifdef DX_DEBUG | |
1495 | printf("db_block %d, type %d, min_hash 0x%0x, max_hash 0x%0x\n", | |
1496 | db->blockcnt, dx_db->type, | |
1497 | dx_db->min_hash, dx_db->max_hash); | |
1498 | #endif | |
b7a00563 | 1499 | cd->pctx.dir = cd->pctx.ino; |
8fdc9985 TT |
1500 | if ((dx_db->type == DX_DIRBLOCK_ROOT) || |
1501 | (dx_db->type == DX_DIRBLOCK_NODE)) | |
81683c6a | 1502 | parse_int_node(fs, db, cd, dx_dir, buf, failed_csum); |
8fdc9985 | 1503 | } |
e8548796 | 1504 | |
0ac4b397 DW |
1505 | if (offset != max_block_size) { |
1506 | cd->pctx.num = rec_len + offset - max_block_size; | |
1507 | if (fix_problem(ctx, PR_2_FINAL_RECLEN, &cd->pctx)) { | |
1508 | dirent->rec_len = cd->pctx.num; | |
1509 | dir_modified++; | |
1b6bf175 | 1510 | } |
3839e657 TT |
1511 | } |
1512 | if (dir_modified) { | |
2e9d8391 | 1513 | int flags, will_rehash; |
e8548796 DW |
1514 | /* leaf block with no tail? Rehash dirs later. */ |
1515 | if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super, | |
1516 | EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) && | |
1517 | is_leaf && | |
17641bf2 DW |
1518 | !inline_data_size && |
1519 | !ext2fs_dirent_has_tail(fs, (struct ext2_dir_entry *)buf)) { | |
1520 | if (insert_dirent_tail(fs, buf) == 0) | |
1521 | goto write_and_fix; | |
e8548796 | 1522 | e2fsck_rehash_dir_later(ctx, ino); |
17641bf2 | 1523 | } |
e8548796 DW |
1524 | |
1525 | write_and_fix: | |
2e9d8391 DW |
1526 | will_rehash = e2fsck_dir_will_be_rehashed(ctx, ino); |
1527 | if (will_rehash) { | |
1528 | flags = ctx->fs->flags; | |
e8548796 | 1529 | ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS; |
2e9d8391 | 1530 | } |
6582dbe9 | 1531 | if (inline_data_size) { |
0ac4b397 | 1532 | buf = ibuf; |
cd971869 | 1533 | #ifdef WORDS_BIGENDIAN |
0ac4b397 DW |
1534 | if (db->blockcnt) |
1535 | goto skip_first_write_swab; | |
cd971869 DW |
1536 | *((__u32 *)buf) = ext2fs_le32_to_cpu(*((__u32 *)buf)); |
1537 | cd->pctx.errcode = ext2fs_dirent_swab_out2(fs, | |
1538 | buf + EXT4_INLINE_DATA_DOTDOT_SIZE, | |
0ac4b397 | 1539 | EXT4_MIN_INLINE_DATA_SIZE - |
cd971869 DW |
1540 | EXT4_INLINE_DATA_DOTDOT_SIZE, |
1541 | 0); | |
0ac4b397 DW |
1542 | if (cd->pctx.errcode) |
1543 | goto skip_second_write_swab; | |
1544 | skip_first_write_swab: | |
1545 | if (inline_data_size <= EXT4_MIN_INLINE_DATA_SIZE || | |
1546 | !db->blockcnt) | |
1547 | goto skip_second_write_swab; | |
1548 | cd->pctx.errcode = ext2fs_dirent_swab_out2(fs, | |
1549 | buf + EXT4_MIN_INLINE_DATA_SIZE, | |
1550 | inline_data_size - | |
1551 | EXT4_MIN_INLINE_DATA_SIZE, | |
1552 | 0); | |
1553 | skip_second_write_swab: | |
cd971869 DW |
1554 | if (cd->pctx.errcode && |
1555 | !fix_problem(ctx, PR_2_WRITE_DIRBLOCK, &cd->pctx)) | |
1556 | goto abort_free_dict; | |
1557 | #endif | |
6582dbe9 ZL |
1558 | cd->pctx.errcode = |
1559 | ext2fs_inline_data_set(fs, ino, 0, buf, | |
1560 | inline_data_size); | |
1561 | } else | |
1562 | cd->pctx.errcode = ext2fs_write_dir_block4(fs, block_nr, | |
1563 | buf, 0, ino); | |
2e9d8391 DW |
1564 | if (will_rehash) |
1565 | ctx->fs->flags = (flags & | |
1566 | EXT2_FLAG_IGNORE_CSUM_ERRORS) | | |
1567 | (ctx->fs->flags & | |
1568 | ~EXT2_FLAG_IGNORE_CSUM_ERRORS); | |
1b6bf175 | 1569 | if (cd->pctx.errcode) { |
08b21301 | 1570 | if (!fix_problem(ctx, PR_2_WRITE_DIRBLOCK, |
0926668d TT |
1571 | &cd->pctx)) |
1572 | goto abort_free_dict; | |
3839e657 TT |
1573 | } |
1574 | ext2fs_mark_changed(fs); | |
e8548796 DW |
1575 | } else if (is_leaf && failed_csum && !dir_modified) { |
1576 | /* | |
1577 | * If a leaf node that fails csum makes it this far without | |
1578 | * alteration, ask the user if the checksum should be fixed. | |
1579 | */ | |
1580 | if (fix_problem(ctx, PR_2_LEAF_NODE_ONLY_CSUM_INVALID, | |
1581 | &cd->pctx)) | |
1582 | goto write_and_fix; | |
3839e657 | 1583 | } |
0926668d | 1584 | dict_free_nodes(&de_dict); |
3839e657 | 1585 | return 0; |
0926668d | 1586 | abort_free_dict: |
0926668d | 1587 | ctx->flags |= E2F_FLAG_ABORT; |
49a7360b | 1588 | dict_free_nodes(&de_dict); |
0926668d | 1589 | return DIRENT_ABORT; |
3839e657 TT |
1590 | } |
1591 | ||
624e4a64 AK |
1592 | struct del_block { |
1593 | e2fsck_t ctx; | |
1594 | e2_blkcnt_t num; | |
1595 | }; | |
1596 | ||
3839e657 TT |
1597 | /* |
1598 | * This function is called to deallocate a block, and is an interator | |
1599 | * functioned called by deallocate inode via ext2fs_iterate_block(). | |
1600 | */ | |
1601 | static int deallocate_inode_block(ext2_filsys fs, | |
6dc64392 | 1602 | blk64_t *block_nr, |
54434927 | 1603 | e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)), |
6dc64392 | 1604 | blk64_t ref_block EXT2FS_ATTR((unused)), |
54434927 | 1605 | int ref_offset EXT2FS_ATTR((unused)), |
133a56dc | 1606 | void *priv_data) |
3839e657 | 1607 | { |
624e4a64 | 1608 | struct del_block *p = priv_data; |
efc6f628 | 1609 | |
4a05268c | 1610 | if (*block_nr == 0) |
3839e657 | 1611 | return 0; |
1ba7a2f2 | 1612 | if ((*block_nr < fs->super->s_first_data_block) || |
4efbac6f | 1613 | (*block_nr >= ext2fs_blocks_count(fs->super))) |
1ba7a2f2 | 1614 | return 0; |
8dd650ab DW |
1615 | if ((*block_nr % EXT2FS_CLUSTER_RATIO(fs)) == 0) |
1616 | ext2fs_block_alloc_stats2(fs, *block_nr, -1); | |
624e4a64 | 1617 | p->num++; |
3839e657 TT |
1618 | return 0; |
1619 | } | |
efc6f628 | 1620 | |
3839e657 TT |
1621 | /* |
1622 | * This fuction deallocates an inode | |
1623 | */ | |
4035f40b | 1624 | static void deallocate_inode(e2fsck_t ctx, ext2_ino_t ino, char* block_buf) |
3839e657 | 1625 | { |
1b6bf175 | 1626 | ext2_filsys fs = ctx->fs; |
3839e657 | 1627 | struct ext2_inode inode; |
1b6bf175 | 1628 | struct problem_context pctx; |
0684a4f3 | 1629 | __u32 count; |
624e4a64 | 1630 | struct del_block del_block; |
efc6f628 | 1631 | |
08b21301 | 1632 | e2fsck_read_inode(ctx, ino, &inode, "deallocate_inode"); |
1b6bf175 TT |
1633 | clear_problem_context(&pctx); |
1634 | pctx.ino = ino; | |
f3db3566 | 1635 | |
3839e657 TT |
1636 | /* |
1637 | * Fix up the bitmaps... | |
1638 | */ | |
f8188fff | 1639 | e2fsck_read_bitmaps(ctx); |
0684a4f3 TT |
1640 | ext2fs_inode_alloc_stats2(fs, ino, -1, LINUX_S_ISDIR(inode.i_mode)); |
1641 | ||
0c80c44b | 1642 | if (ext2fs_file_acl_block(fs, &inode) && |
0684a4f3 | 1643 | (fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_EXT_ATTR)) { |
39f5659a DW |
1644 | pctx.errcode = ext2fs_adjust_ea_refcount3(fs, |
1645 | ext2fs_file_acl_block(fs, &inode), | |
1646 | block_buf, -1, &count, ino); | |
0684a4f3 TT |
1647 | if (pctx.errcode == EXT2_ET_BAD_EA_BLOCK_NUM) { |
1648 | pctx.errcode = 0; | |
1649 | count = 1; | |
1650 | } | |
1651 | if (pctx.errcode) { | |
0c80c44b | 1652 | pctx.blk = ext2fs_file_acl_block(fs, &inode); |
0684a4f3 TT |
1653 | fix_problem(ctx, PR_2_ADJ_EA_REFCOUNT, &pctx); |
1654 | ctx->flags |= E2F_FLAG_ABORT; | |
1655 | return; | |
1656 | } | |
1657 | if (count == 0) { | |
48f23054 | 1658 | ext2fs_block_alloc_stats2(fs, |
0c80c44b | 1659 | ext2fs_file_acl_block(fs, &inode), -1); |
0684a4f3 | 1660 | } |
0c80c44b | 1661 | ext2fs_file_acl_block_set(fs, &inode, 0); |
0684a4f3 | 1662 | } |
3839e657 | 1663 | |
0c80c44b | 1664 | if (!ext2fs_inode_has_valid_blocks2(fs, &inode)) |
c8ec2bad | 1665 | goto clear_inode; |
a4742691 | 1666 | |
2ece8390 DW |
1667 | /* Inline data inodes don't have blocks to iterate */ |
1668 | if (inode.i_flags & EXT4_INLINE_DATA_FL) | |
1669 | goto clear_inode; | |
1670 | ||
3b6c0938 DW |
1671 | if (LINUX_S_ISREG(inode.i_mode) && |
1672 | ext2fs_needs_large_file_feature(EXT2_I_SIZE(&inode))) | |
a4742691 TT |
1673 | ctx->large_files--; |
1674 | ||
624e4a64 AK |
1675 | del_block.ctx = ctx; |
1676 | del_block.num = 0; | |
6dc64392 | 1677 | pctx.errcode = ext2fs_block_iterate3(fs, ino, 0, block_buf, |
624e4a64 AK |
1678 | deallocate_inode_block, |
1679 | &del_block); | |
1b6bf175 TT |
1680 | if (pctx.errcode) { |
1681 | fix_problem(ctx, PR_2_DEALLOC_INODE, &pctx); | |
08b21301 TT |
1682 | ctx->flags |= E2F_FLAG_ABORT; |
1683 | return; | |
1b6bf175 | 1684 | } |
c8ec2bad TT |
1685 | clear_inode: |
1686 | /* Inode may have changed by block_iterate, so reread it */ | |
1687 | e2fsck_read_inode(ctx, ino, &inode, "deallocate_inode"); | |
1688 | e2fsck_clear_inode(ctx, ino, &inode, 0, "deallocate_inode"); | |
3839e657 TT |
1689 | } |
1690 | ||
8fdc9985 TT |
1691 | /* |
1692 | * This fuction clears the htree flag on an inode | |
1693 | */ | |
1694 | static void clear_htree(e2fsck_t ctx, ext2_ino_t ino) | |
1695 | { | |
1696 | struct ext2_inode inode; | |
efc6f628 | 1697 | |
8fdc9985 TT |
1698 | e2fsck_read_inode(ctx, ino, &inode, "clear_htree"); |
1699 | inode.i_flags = inode.i_flags & ~EXT2_INDEX_FL; | |
1700 | e2fsck_write_inode(ctx, ino, &inode, "clear_htree"); | |
b7a00563 TT |
1701 | if (ctx->dirs_to_hash) |
1702 | ext2fs_u32_list_add(ctx->dirs_to_hash, ino); | |
8fdc9985 TT |
1703 | } |
1704 | ||
1705 | ||
f404167d TT |
1706 | int e2fsck_process_bad_inode(e2fsck_t ctx, ext2_ino_t dir, |
1707 | ext2_ino_t ino, char *buf) | |
3839e657 | 1708 | { |
1b6bf175 | 1709 | ext2_filsys fs = ctx->fs; |
3839e657 | 1710 | struct ext2_inode inode; |
3839e657 | 1711 | int inode_modified = 0; |
6c313fd4 | 1712 | int not_fixed = 0; |
1e3472c5 | 1713 | unsigned char *frag, *fsize; |
21c84b71 | 1714 | struct problem_context pctx; |
3c7c6d73 | 1715 | problem_t problem = 0; |
3839e657 | 1716 | |
08b21301 | 1717 | e2fsck_read_inode(ctx, ino, &inode, "process_bad_inode"); |
21c84b71 TT |
1718 | |
1719 | clear_problem_context(&pctx); | |
1720 | pctx.ino = ino; | |
1721 | pctx.dir = dir; | |
1722 | pctx.inode = &inode; | |
1723 | ||
0c80c44b | 1724 | if (ext2fs_file_acl_block(fs, &inode) && |
f76344fb TT |
1725 | !(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_EXT_ATTR)) { |
1726 | if (fix_problem(ctx, PR_2_FILE_ACL_ZERO, &pctx)) { | |
0c80c44b | 1727 | ext2fs_file_acl_block_set(fs, &inode, 0); |
f76344fb TT |
1728 | inode_modified++; |
1729 | } else | |
1730 | not_fixed++; | |
1731 | } | |
6c313fd4 | 1732 | |
50e1e10f TT |
1733 | if (!LINUX_S_ISDIR(inode.i_mode) && !LINUX_S_ISREG(inode.i_mode) && |
1734 | !LINUX_S_ISCHR(inode.i_mode) && !LINUX_S_ISBLK(inode.i_mode) && | |
1735 | !LINUX_S_ISLNK(inode.i_mode) && !LINUX_S_ISFIFO(inode.i_mode) && | |
08b21301 TT |
1736 | !(LINUX_S_ISSOCK(inode.i_mode))) |
1737 | problem = PR_2_BAD_MODE; | |
fdbdea09 | 1738 | else if (LINUX_S_ISCHR(inode.i_mode) |
0684a4f3 | 1739 | && !e2fsck_pass1_check_device_inode(fs, &inode)) |
08b21301 | 1740 | problem = PR_2_BAD_CHAR_DEV; |
fdbdea09 | 1741 | else if (LINUX_S_ISBLK(inode.i_mode) |
0684a4f3 | 1742 | && !e2fsck_pass1_check_device_inode(fs, &inode)) |
08b21301 | 1743 | problem = PR_2_BAD_BLOCK_DEV; |
fdbdea09 | 1744 | else if (LINUX_S_ISFIFO(inode.i_mode) |
0684a4f3 | 1745 | && !e2fsck_pass1_check_device_inode(fs, &inode)) |
1dde43f0 | 1746 | problem = PR_2_BAD_FIFO; |
fdbdea09 | 1747 | else if (LINUX_S_ISSOCK(inode.i_mode) |
0684a4f3 | 1748 | && !e2fsck_pass1_check_device_inode(fs, &inode)) |
1dde43f0 | 1749 | problem = PR_2_BAD_SOCKET; |
fdbdea09 | 1750 | else if (LINUX_S_ISLNK(inode.i_mode) |
7cadc577 | 1751 | && !e2fsck_pass1_check_symlink(fs, ino, &inode, buf)) { |
bcf9c5d4 | 1752 | problem = PR_2_INVALID_SYMLINK; |
67052a8a | 1753 | } |
1dde43f0 | 1754 | |
08b21301 TT |
1755 | if (problem) { |
1756 | if (fix_problem(ctx, problem, &pctx)) { | |
1b6bf175 | 1757 | deallocate_inode(ctx, ino, 0); |
a02ce9df | 1758 | if (ctx->flags & E2F_FLAG_SIGNAL_MASK) |
08b21301 | 1759 | return 0; |
7cf73dcd | 1760 | return 1; |
6c313fd4 TT |
1761 | } else |
1762 | not_fixed++; | |
08b21301 | 1763 | problem = 0; |
7cf73dcd | 1764 | } |
efc6f628 | 1765 | |
6c313fd4 TT |
1766 | if (inode.i_faddr) { |
1767 | if (fix_problem(ctx, PR_2_FADDR_ZERO, &pctx)) { | |
1768 | inode.i_faddr = 0; | |
1769 | inode_modified++; | |
1770 | } else | |
1771 | not_fixed++; | |
3839e657 | 1772 | } |
1e3472c5 TT |
1773 | |
1774 | switch (fs->super->s_creator_os) { | |
1e3472c5 TT |
1775 | case EXT2_OS_HURD: |
1776 | frag = &inode.osd2.hurd2.h_i_frag; | |
1777 | fsize = &inode.osd2.hurd2.h_i_fsize; | |
1778 | break; | |
1e3472c5 TT |
1779 | default: |
1780 | frag = fsize = 0; | |
1781 | } | |
21c84b71 TT |
1782 | if (frag && *frag) { |
1783 | pctx.num = *frag; | |
1b6bf175 | 1784 | if (fix_problem(ctx, PR_2_FRAG_ZERO, &pctx)) { |
21c84b71 TT |
1785 | *frag = 0; |
1786 | inode_modified++; | |
7e0282c5 TT |
1787 | } else |
1788 | not_fixed++; | |
21c84b71 TT |
1789 | pctx.num = 0; |
1790 | } | |
1791 | if (fsize && *fsize) { | |
1792 | pctx.num = *fsize; | |
1b6bf175 | 1793 | if (fix_problem(ctx, PR_2_FSIZE_ZERO, &pctx)) { |
21c84b71 TT |
1794 | *fsize = 0; |
1795 | inode_modified++; | |
6c313fd4 TT |
1796 | } else |
1797 | not_fixed++; | |
21c84b71 TT |
1798 | pctx.num = 0; |
1799 | } | |
1800 | ||
5d17119d | 1801 | if ((fs->super->s_creator_os == EXT2_OS_LINUX) && |
efc6f628 | 1802 | !(fs->super->s_feature_ro_compat & |
5d17119d TT |
1803 | EXT4_FEATURE_RO_COMPAT_HUGE_FILE) && |
1804 | (inode.osd2.linux2.l_i_blocks_hi != 0)) { | |
1805 | pctx.num = inode.osd2.linux2.l_i_blocks_hi; | |
1806 | if (fix_problem(ctx, PR_2_BLOCKS_HI_ZERO, &pctx)) { | |
1807 | inode.osd2.linux2.l_i_blocks_hi = 0; | |
1808 | inode_modified++; | |
1809 | } | |
1810 | } | |
1811 | ||
36769c60 JW |
1812 | if ((fs->super->s_creator_os == EXT2_OS_LINUX) && |
1813 | !(fs->super->s_feature_incompat & | |
911ec626 TT |
1814 | EXT4_FEATURE_INCOMPAT_64BIT) && |
1815 | inode.osd2.linux2.l_i_file_acl_high != 0) { | |
1816 | pctx.num = inode.osd2.linux2.l_i_file_acl_high; | |
1817 | if (fix_problem(ctx, PR_2_I_FILE_ACL_HI_ZERO, &pctx)) { | |
1818 | inode.osd2.linux2.l_i_file_acl_high = 0; | |
1819 | inode_modified++; | |
1820 | } else | |
1821 | not_fixed++; | |
1822 | } | |
1823 | ||
0c80c44b TT |
1824 | if (ext2fs_file_acl_block(fs, &inode) && |
1825 | ((ext2fs_file_acl_block(fs, &inode) < fs->super->s_first_data_block) || | |
1826 | (ext2fs_file_acl_block(fs, &inode) >= ext2fs_blocks_count(fs->super)))) { | |
6c313fd4 | 1827 | if (fix_problem(ctx, PR_2_FILE_ACL_BAD, &pctx)) { |
0c80c44b | 1828 | ext2fs_file_acl_block_set(fs, &inode, 0); |
6c313fd4 TT |
1829 | inode_modified++; |
1830 | } else | |
1831 | not_fixed++; | |
342d847d | 1832 | } |
21c84b71 | 1833 | if (inode.i_dir_acl && |
6c313fd4 TT |
1834 | LINUX_S_ISDIR(inode.i_mode)) { |
1835 | if (fix_problem(ctx, PR_2_DIR_ACL_ZERO, &pctx)) { | |
1836 | inode.i_dir_acl = 0; | |
1837 | inode_modified++; | |
1838 | } else | |
1839 | not_fixed++; | |
21c84b71 | 1840 | } |
6c313fd4 | 1841 | |
f3db3566 | 1842 | if (inode_modified) |
08b21301 | 1843 | e2fsck_write_inode(ctx, ino, &inode, "process_bad_inode"); |
f76344fb | 1844 | if (!not_fixed && ctx->inode_bad_map) |
c5d2f50d | 1845 | ext2fs_unmark_inode_bitmap2(ctx->inode_bad_map, ino); |
3839e657 TT |
1846 | return 0; |
1847 | } | |
1848 | ||
50e1e10f TT |
1849 | /* |
1850 | * allocate_dir_block --- this function allocates a new directory | |
1851 | * block for a particular inode; this is done if a directory has | |
1852 | * a "hole" in it, or if a directory has a illegal block number | |
1853 | * that was zeroed out and now needs to be replaced. | |
1854 | */ | |
1b6bf175 | 1855 | static int allocate_dir_block(e2fsck_t ctx, |
6dc64392 | 1856 | struct ext2_db_entry2 *db, |
efc6f628 | 1857 | char *buf EXT2FS_ATTR((unused)), |
54434927 | 1858 | struct problem_context *pctx) |
50e1e10f | 1859 | { |
1b6bf175 | 1860 | ext2_filsys fs = ctx->fs; |
ff11309e | 1861 | blk64_t blk = 0; |
50e1e10f TT |
1862 | char *block; |
1863 | struct ext2_inode inode; | |
50e1e10f | 1864 | |
1b6bf175 | 1865 | if (fix_problem(ctx, PR_2_DIRECTORY_HOLE, pctx) == 0) |
50e1e10f TT |
1866 | return 1; |
1867 | ||
1868 | /* | |
1869 | * Read the inode and block bitmaps in; we'll be messing with | |
1870 | * them. | |
1871 | */ | |
f8188fff | 1872 | e2fsck_read_bitmaps(ctx); |
efc6f628 | 1873 | |
50e1e10f TT |
1874 | /* |
1875 | * First, find a free block | |
1876 | */ | |
ff11309e DW |
1877 | e2fsck_read_inode(ctx, db->ino, &inode, "allocate_dir_block"); |
1878 | pctx->errcode = ext2fs_map_cluster_block(fs, db->ino, &inode, | |
1879 | db->blockcnt, &blk); | |
1880 | if (pctx->errcode || blk == 0) { | |
7b486ec0 DW |
1881 | blk = ext2fs_find_inode_goal(fs, db->ino, &inode, db->blockcnt); |
1882 | pctx->errcode = ext2fs_new_block2(fs, blk, | |
ff11309e DW |
1883 | ctx->block_found_map, &blk); |
1884 | if (pctx->errcode) { | |
1885 | pctx->str = "ext2fs_new_block"; | |
1886 | fix_problem(ctx, PR_2_ALLOC_DIRBOCK, pctx); | |
1887 | return 1; | |
1888 | } | |
50e1e10f | 1889 | } |
c5d2f50d VAH |
1890 | ext2fs_mark_block_bitmap2(ctx->block_found_map, blk); |
1891 | ext2fs_mark_block_bitmap2(fs->block_map, blk); | |
50e1e10f TT |
1892 | ext2fs_mark_bb_dirty(fs); |
1893 | ||
1894 | /* | |
1895 | * Now let's create the actual data block for the inode | |
1896 | */ | |
1897 | if (db->blockcnt) | |
1b6bf175 | 1898 | pctx->errcode = ext2fs_new_dir_block(fs, 0, 0, &block); |
50e1e10f | 1899 | else |
1b6bf175 TT |
1900 | pctx->errcode = ext2fs_new_dir_block(fs, db->ino, |
1901 | EXT2_ROOT_INO, &block); | |
50e1e10f | 1902 | |
1b6bf175 TT |
1903 | if (pctx->errcode) { |
1904 | pctx->str = "ext2fs_new_dir_block"; | |
1905 | fix_problem(ctx, PR_2_ALLOC_DIRBOCK, pctx); | |
50e1e10f TT |
1906 | return 1; |
1907 | } | |
1908 | ||
81683c6a | 1909 | pctx->errcode = ext2fs_write_dir_block4(fs, blk, block, 0, db->ino); |
c4e3d3f3 | 1910 | ext2fs_free_mem(&block); |
1b6bf175 TT |
1911 | if (pctx->errcode) { |
1912 | pctx->str = "ext2fs_write_dir_block"; | |
1913 | fix_problem(ctx, PR_2_ALLOC_DIRBOCK, pctx); | |
50e1e10f TT |
1914 | return 1; |
1915 | } | |
1916 | ||
1917 | /* | |
1918 | * Update the inode block count | |
1919 | */ | |
1ca1059f | 1920 | ext2fs_iblk_add_blocks(fs, &inode, 1); |
97c607b1 DW |
1921 | if (EXT2_I_SIZE(&inode) < (db->blockcnt+1) * fs->blocksize) { |
1922 | pctx->errcode = ext2fs_inode_size_set(fs, &inode, | |
1923 | (db->blockcnt+1) * fs->blocksize); | |
1924 | if (pctx->errcode) { | |
1925 | pctx->str = "ext2fs_inode_size_set"; | |
1926 | fix_problem(ctx, PR_2_ALLOC_DIRBOCK, pctx); | |
1927 | return 1; | |
1928 | } | |
1929 | } | |
08b21301 | 1930 | e2fsck_write_inode(ctx, db->ino, &inode, "allocate_dir_block"); |
50e1e10f TT |
1931 | |
1932 | /* | |
1933 | * Finally, update the block pointers for the inode | |
1934 | */ | |
1935 | db->blk = blk; | |
2d07b3ad TT |
1936 | pctx->errcode = ext2fs_bmap2(fs, db->ino, &inode, 0, BMAP_SET, |
1937 | db->blockcnt, 0, &blk); | |
1b6bf175 TT |
1938 | if (pctx->errcode) { |
1939 | pctx->str = "ext2fs_block_iterate"; | |
1940 | fix_problem(ctx, PR_2_ALLOC_DIRBOCK, pctx); | |
50e1e10f TT |
1941 | return 1; |
1942 | } | |
1943 | ||
1944 | return 0; | |
1945 | } |