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Commit | Line | Data |
---|---|---|
1b6bf175 TT |
1 | /* |
2 | * e2fsck.c - superblock checks | |
efc6f628 | 3 | * |
1b6bf175 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% | |
10 | */ | |
11 | ||
d1154eb4 | 12 | #include "config.h" |
1b6bf175 TT |
13 | #ifdef HAVE_ERRNO_H |
14 | #include <errno.h> | |
15 | #endif | |
1b6bf175 | 16 | |
54be2ccc | 17 | #ifndef EXT2_SKIP_UUID |
1b6bf175 | 18 | #include "uuid/uuid.h" |
54be2ccc | 19 | #endif |
1b6bf175 TT |
20 | #include "e2fsck.h" |
21 | #include "problem.h" | |
1b6bf175 TT |
22 | |
23 | #define MIN_CHECK 1 | |
24 | #define MAX_CHECK 2 | |
25 | ||
26 | static void check_super_value(e2fsck_t ctx, const char *descr, | |
27 | unsigned long value, int flags, | |
7f813ba3 | 28 | unsigned long min_val, unsigned long max_val) |
1b6bf175 TT |
29 | { |
30 | struct problem_context pctx; | |
31 | ||
7f813ba3 TT |
32 | if (((flags & MIN_CHECK) && (value < min_val)) || |
33 | ((flags & MAX_CHECK) && (value > max_val))) { | |
1b6bf175 TT |
34 | clear_problem_context(&pctx); |
35 | pctx.num = value; | |
36 | pctx.str = descr; | |
37 | fix_problem(ctx, PR_0_MISC_CORRUPT_SUPER, &pctx); | |
08b21301 | 38 | ctx->flags |= E2F_FLAG_ABORT; /* never get here! */ |
1b6bf175 TT |
39 | } |
40 | } | |
41 | ||
80bfaa3e TT |
42 | /* |
43 | * helper function to release an inode | |
44 | */ | |
45 | struct process_block_struct { | |
8394902e TT |
46 | e2fsck_t ctx; |
47 | char *buf; | |
80bfaa3e | 48 | struct problem_context *pctx; |
8394902e TT |
49 | int truncating; |
50 | int truncate_offset; | |
54434927 | 51 | e2_blkcnt_t truncate_block; |
8394902e TT |
52 | int truncated_blocks; |
53 | int abort; | |
54 | errcode_t errcode; | |
80bfaa3e TT |
55 | }; |
56 | ||
57 | static int release_inode_block(ext2_filsys fs, | |
6dc64392 | 58 | blk64_t *block_nr, |
54434927 | 59 | e2_blkcnt_t blockcnt, |
6dc64392 | 60 | blk64_t ref_blk EXT2FS_ATTR((unused)), |
54434927 | 61 | int ref_offset EXT2FS_ATTR((unused)), |
80bfaa3e TT |
62 | void *priv_data) |
63 | { | |
64 | struct process_block_struct *pb; | |
8394902e TT |
65 | e2fsck_t ctx; |
66 | struct problem_context *pctx; | |
6dc64392 | 67 | blk64_t blk = *block_nr; |
8394902e | 68 | int retval = 0; |
80bfaa3e TT |
69 | |
70 | pb = (struct process_block_struct *) priv_data; | |
71 | ctx = pb->ctx; | |
72 | pctx = pb->pctx; | |
73 | ||
74 | pctx->blk = blk; | |
75 | pctx->blkcount = blockcnt; | |
76 | ||
77 | if (HOLE_BLKADDR(blk)) | |
78 | return 0; | |
79 | ||
80 | if ((blk < fs->super->s_first_data_block) || | |
4efbac6f | 81 | (blk >= ext2fs_blocks_count(fs->super))) { |
80bfaa3e | 82 | fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_BLOCK_NUM, pctx); |
53ef44c4 | 83 | return_abort: |
80bfaa3e TT |
84 | pb->abort = 1; |
85 | return BLOCK_ABORT; | |
86 | } | |
87 | ||
c5d2f50d | 88 | if (!ext2fs_test_block_bitmap2(fs->block_map, blk)) { |
80bfaa3e | 89 | fix_problem(ctx, PR_0_ORPHAN_ALREADY_CLEARED_BLOCK, pctx); |
53ef44c4 | 90 | goto return_abort; |
8394902e TT |
91 | } |
92 | ||
93 | /* | |
94 | * If we are deleting an orphan, then we leave the fields alone. | |
95 | * If we are truncating an orphan, then update the inode fields | |
96 | * and clean up any partial block data. | |
97 | */ | |
98 | if (pb->truncating) { | |
99 | /* | |
100 | * We only remove indirect blocks if they are | |
101 | * completely empty. | |
102 | */ | |
103 | if (blockcnt < 0) { | |
104 | int i, limit; | |
53ef44c4 | 105 | blk_t *bp; |
efc6f628 | 106 | |
24a117ab | 107 | pb->errcode = io_channel_read_blk64(fs->io, blk, 1, |
8394902e TT |
108 | pb->buf); |
109 | if (pb->errcode) | |
53ef44c4 | 110 | goto return_abort; |
8394902e TT |
111 | |
112 | limit = fs->blocksize >> 2; | |
53ef44c4 TT |
113 | for (i = 0, bp = (blk_t *) pb->buf; |
114 | i < limit; i++, bp++) | |
115 | if (*bp) | |
8394902e TT |
116 | return 0; |
117 | } | |
118 | /* | |
119 | * We don't remove direct blocks until we've reached | |
120 | * the truncation block. | |
121 | */ | |
122 | if (blockcnt >= 0 && blockcnt < pb->truncate_block) | |
123 | return 0; | |
124 | /* | |
125 | * If part of the last block needs truncating, we do | |
126 | * it here. | |
127 | */ | |
128 | if ((blockcnt == pb->truncate_block) && pb->truncate_offset) { | |
24a117ab | 129 | pb->errcode = io_channel_read_blk64(fs->io, blk, 1, |
8394902e TT |
130 | pb->buf); |
131 | if (pb->errcode) | |
53ef44c4 | 132 | goto return_abort; |
8394902e TT |
133 | memset(pb->buf + pb->truncate_offset, 0, |
134 | fs->blocksize - pb->truncate_offset); | |
24a117ab | 135 | pb->errcode = io_channel_write_blk64(fs->io, blk, 1, |
8394902e TT |
136 | pb->buf); |
137 | if (pb->errcode) | |
53ef44c4 | 138 | goto return_abort; |
8394902e TT |
139 | } |
140 | pb->truncated_blocks++; | |
141 | *block_nr = 0; | |
142 | retval |= BLOCK_CHANGED; | |
80bfaa3e | 143 | } |
efc6f628 | 144 | |
48f23054 | 145 | ext2fs_block_alloc_stats2(fs, blk, -1); |
e9e96584 | 146 | ctx->free_blocks++; |
8394902e | 147 | return retval; |
80bfaa3e | 148 | } |
efc6f628 | 149 | |
80bfaa3e TT |
150 | /* |
151 | * This function releases an inode. Returns 1 if an inconsistency was | |
8394902e TT |
152 | * found. If the inode has a link count, then it is being truncated and |
153 | * not deleted. | |
80bfaa3e | 154 | */ |
86c627ec | 155 | static int release_inode_blocks(e2fsck_t ctx, ext2_ino_t ino, |
721edd0e | 156 | struct ext2_inode *inode, char *block_buf, |
80bfaa3e TT |
157 | struct problem_context *pctx) |
158 | { | |
0684a4f3 | 159 | struct process_block_struct pb; |
8394902e | 160 | ext2_filsys fs = ctx->fs; |
80bfaa3e | 161 | errcode_t retval; |
0684a4f3 | 162 | __u32 count; |
80bfaa3e | 163 | |
0c80c44b | 164 | if (!ext2fs_inode_has_valid_blocks2(fs, inode)) |
42475e28 TT |
165 | return 0; |
166 | ||
8394902e | 167 | pb.buf = block_buf + 3 * ctx->fs->blocksize; |
80bfaa3e TT |
168 | pb.ctx = ctx; |
169 | pb.abort = 0; | |
8394902e | 170 | pb.errcode = 0; |
80bfaa3e | 171 | pb.pctx = pctx; |
8394902e TT |
172 | if (inode->i_links_count) { |
173 | pb.truncating = 1; | |
54434927 | 174 | pb.truncate_block = (e2_blkcnt_t) |
0bd0e593 | 175 | ((EXT2_I_SIZE(inode) + fs->blocksize - 1) / |
8394902e TT |
176 | fs->blocksize); |
177 | pb.truncate_offset = inode->i_size % fs->blocksize; | |
178 | } else { | |
179 | pb.truncating = 0; | |
180 | pb.truncate_block = 0; | |
181 | pb.truncate_offset = 0; | |
182 | } | |
183 | pb.truncated_blocks = 0; | |
6dc64392 | 184 | retval = ext2fs_block_iterate3(fs, ino, BLOCK_FLAG_DEPTH_TRAVERSE, |
8394902e | 185 | block_buf, release_inode_block, &pb); |
80bfaa3e | 186 | if (retval) { |
8394902e | 187 | com_err("release_inode_blocks", retval, |
80bfaa3e TT |
188 | _("while calling ext2fs_block_iterate for inode %d"), |
189 | ino); | |
190 | return 1; | |
191 | } | |
192 | if (pb.abort) | |
193 | return 1; | |
194 | ||
8394902e TT |
195 | /* Refresh the inode since ext2fs_block_iterate may have changed it */ |
196 | e2fsck_read_inode(ctx, ino, inode, "release_inode_blocks"); | |
197 | ||
198 | if (pb.truncated_blocks) | |
1ca1059f | 199 | ext2fs_iblk_sub_blocks(fs, inode, pb.truncated_blocks); |
8394902e | 200 | |
0c80c44b TT |
201 | if (ext2fs_file_acl_block(fs, inode)) { |
202 | retval = ext2fs_adjust_ea_refcount2(fs, | |
203 | ext2fs_file_acl_block(fs, inode), | |
204 | block_buf, -1, &count); | |
0684a4f3 TT |
205 | if (retval == EXT2_ET_BAD_EA_BLOCK_NUM) { |
206 | retval = 0; | |
207 | count = 1; | |
208 | } | |
209 | if (retval) { | |
210 | com_err("release_inode_blocks", retval, | |
6dc64392 | 211 | _("while calling ext2fs_adjust_ea_refcount2 for inode %d"), |
0684a4f3 TT |
212 | ino); |
213 | return 1; | |
214 | } | |
e9e96584 | 215 | if (count == 0) { |
48f23054 | 216 | ext2fs_block_alloc_stats2(fs, |
0c80c44b | 217 | ext2fs_file_acl_block(fs, inode), -1); |
e9e96584 TT |
218 | ctx->free_blocks++; |
219 | } | |
0c80c44b | 220 | ext2fs_file_acl_block_set(fs, inode, 0); |
0684a4f3 | 221 | } |
80bfaa3e TT |
222 | return 0; |
223 | } | |
224 | ||
225 | /* | |
226 | * This function releases all of the orphan inodes. It returns 1 if | |
227 | * it hit some error, and 0 on success. | |
228 | */ | |
229 | static int release_orphan_inodes(e2fsck_t ctx) | |
230 | { | |
231 | ext2_filsys fs = ctx->fs; | |
86c627ec | 232 | ext2_ino_t ino, next_ino; |
80bfaa3e TT |
233 | struct ext2_inode inode; |
234 | struct problem_context pctx; | |
235 | char *block_buf; | |
236 | ||
237 | if ((ino = fs->super->s_last_orphan) == 0) | |
238 | return 0; | |
239 | ||
25c63ba0 TT |
240 | /* |
241 | * Win or lose, we won't be using the head of the orphan inode | |
242 | * list again. | |
243 | */ | |
244 | fs->super->s_last_orphan = 0; | |
245 | ext2fs_mark_super_dirty(fs); | |
eb4ab510 TT |
246 | |
247 | /* | |
248 | * If the filesystem contains errors, don't run the orphan | |
249 | * list, since the orphan list can't be trusted; and we're | |
250 | * going to be running a full e2fsck run anyway... | |
251 | */ | |
252 | if (fs->super->s_state & EXT2_ERROR_FS) | |
253 | return 0; | |
efc6f628 | 254 | |
80bfaa3e TT |
255 | if ((ino < EXT2_FIRST_INODE(fs->super)) || |
256 | (ino > fs->super->s_inodes_count)) { | |
257 | clear_problem_context(&pctx); | |
53ef44c4 | 258 | pctx.ino = ino; |
80bfaa3e TT |
259 | fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_HEAD_INODE, &pctx); |
260 | return 1; | |
261 | } | |
262 | ||
8394902e | 263 | block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 4, |
9b565759 | 264 | "block iterate buffer"); |
80bfaa3e | 265 | e2fsck_read_bitmaps(ctx); |
efc6f628 | 266 | |
80bfaa3e | 267 | while (ino) { |
8394902e | 268 | e2fsck_read_inode(ctx, ino, &inode, "release_orphan_inodes"); |
80bfaa3e | 269 | clear_problem_context(&pctx); |
ecf1b776 | 270 | pctx.ino = ino; |
80bfaa3e | 271 | pctx.inode = &inode; |
f0b8c87d TT |
272 | pctx.str = inode.i_links_count ? _("Truncating") : |
273 | _("Clearing"); | |
80bfaa3e | 274 | |
8394902e | 275 | fix_problem(ctx, PR_0_ORPHAN_CLEAR_INODE, &pctx); |
ecf1b776 | 276 | |
80bfaa3e TT |
277 | next_ino = inode.i_dtime; |
278 | if (next_ino && | |
99a2cc96 TT |
279 | ((next_ino < EXT2_FIRST_INODE(fs->super)) || |
280 | (next_ino > fs->super->s_inodes_count))) { | |
281 | pctx.ino = next_ino; | |
80bfaa3e | 282 | fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_INODE, &pctx); |
53ef44c4 | 283 | goto return_abort; |
80bfaa3e TT |
284 | } |
285 | ||
8394902e | 286 | if (release_inode_blocks(ctx, ino, &inode, block_buf, &pctx)) |
53ef44c4 | 287 | goto return_abort; |
ecf1b776 | 288 | |
8394902e | 289 | if (!inode.i_links_count) { |
0684a4f3 TT |
290 | ext2fs_inode_alloc_stats2(fs, ino, -1, |
291 | LINUX_S_ISDIR(inode.i_mode)); | |
e9e96584 | 292 | ctx->free_inodes++; |
1f3ad14a | 293 | inode.i_dtime = ctx->now; |
eb16f861 ST |
294 | } else { |
295 | inode.i_dtime = 0; | |
8394902e TT |
296 | } |
297 | e2fsck_write_inode(ctx, ino, &inode, "delete_file"); | |
80bfaa3e TT |
298 | ino = next_ino; |
299 | } | |
c4e3d3f3 | 300 | ext2fs_free_mem(&block_buf); |
80bfaa3e | 301 | return 0; |
53ef44c4 | 302 | return_abort: |
c4e3d3f3 | 303 | ext2fs_free_mem(&block_buf); |
80bfaa3e TT |
304 | return 1; |
305 | } | |
306 | ||
c3ffaf83 TT |
307 | /* |
308 | * Check the resize inode to make sure it is sane. We check both for | |
309 | * the case where on-line resizing is not enabled (in which case the | |
310 | * resize inode should be cleared) as well as the case where on-line | |
311 | * resizing is enabled. | |
312 | */ | |
69d0edfd | 313 | void check_resize_inode(e2fsck_t ctx) |
c3ffaf83 TT |
314 | { |
315 | ext2_filsys fs = ctx->fs; | |
316 | struct ext2_inode inode; | |
317 | struct problem_context pctx; | |
642935c0 TT |
318 | int i, gdt_off, ind_off; |
319 | dgrp_t j; | |
b849f712 | 320 | blk_t blk, pblk; |
027b0577 | 321 | blk_t expect; /* for resize inode, which is 32-bit only */ |
c3ffaf83 TT |
322 | __u32 *dind_buf = 0, *ind_buf; |
323 | errcode_t retval; | |
324 | ||
325 | clear_problem_context(&pctx); | |
c3ffaf83 | 326 | |
efc6f628 TT |
327 | /* |
328 | * If the resize inode feature isn't set, then | |
ea774315 | 329 | * s_reserved_gdt_blocks must be zero. |
c3ffaf83 | 330 | */ |
efc6f628 | 331 | if (!(fs->super->s_feature_compat & |
c3ffaf83 TT |
332 | EXT2_FEATURE_COMPAT_RESIZE_INODE)) { |
333 | if (fs->super->s_reserved_gdt_blocks) { | |
334 | pctx.num = fs->super->s_reserved_gdt_blocks; | |
335 | if (fix_problem(ctx, PR_0_NONZERO_RESERVED_GDT_BLOCKS, | |
336 | &pctx)) { | |
337 | fs->super->s_reserved_gdt_blocks = 0; | |
338 | ext2fs_mark_super_dirty(fs); | |
339 | } | |
340 | } | |
ea774315 TT |
341 | } |
342 | ||
1f3ad14a | 343 | /* Read the resize inode */ |
ea774315 TT |
344 | pctx.ino = EXT2_RESIZE_INO; |
345 | retval = ext2fs_read_inode(fs, EXT2_RESIZE_INO, &inode); | |
346 | if (retval) { | |
efc6f628 | 347 | if (fs->super->s_feature_compat & |
ea774315 TT |
348 | EXT2_FEATURE_COMPAT_RESIZE_INODE) |
349 | ctx->flags |= E2F_FLAG_RESIZE_INODE; | |
350 | return; | |
351 | } | |
352 | ||
efc6f628 TT |
353 | /* |
354 | * If the resize inode feature isn't set, check to make sure | |
ea774315 TT |
355 | * the resize inode is cleared; then we're done. |
356 | */ | |
efc6f628 | 357 | if (!(fs->super->s_feature_compat & |
ea774315 | 358 | EXT2_FEATURE_COMPAT_RESIZE_INODE)) { |
c3ffaf83 TT |
359 | for (i=0; i < EXT2_N_BLOCKS; i++) { |
360 | if (inode.i_block[i]) | |
361 | break; | |
362 | } | |
363 | if ((i < EXT2_N_BLOCKS) && | |
364 | fix_problem(ctx, PR_0_CLEAR_RESIZE_INODE, &pctx)) { | |
365 | memset(&inode, 0, sizeof(inode)); | |
366 | e2fsck_write_inode(ctx, EXT2_RESIZE_INO, &inode, | |
367 | "clear_resize"); | |
368 | } | |
369 | return; | |
370 | } | |
ea774315 | 371 | |
efc6f628 | 372 | /* |
c3ffaf83 TT |
373 | * The resize inode feature is enabled; check to make sure the |
374 | * only block in use is the double indirect block | |
375 | */ | |
376 | blk = inode.i_block[EXT2_DIND_BLOCK]; | |
377 | for (i=0; i < EXT2_N_BLOCKS; i++) { | |
378 | if (i != EXT2_DIND_BLOCK && inode.i_block[i]) | |
379 | break; | |
380 | } | |
d4dc0a9e TT |
381 | if ((i < EXT2_N_BLOCKS) || !blk || !inode.i_links_count || |
382 | !(inode.i_mode & LINUX_S_IFREG) || | |
c3ffaf83 | 383 | (blk < fs->super->s_first_data_block || |
4efbac6f | 384 | blk >= ext2fs_blocks_count(fs->super))) { |
c3ffaf83 TT |
385 | resize_inode_invalid: |
386 | if (fix_problem(ctx, PR_0_RESIZE_INODE_INVALID, &pctx)) { | |
387 | memset(&inode, 0, sizeof(inode)); | |
388 | e2fsck_write_inode(ctx, EXT2_RESIZE_INO, &inode, | |
389 | "clear_resize"); | |
390 | ctx->flags |= E2F_FLAG_RESIZE_INODE; | |
391 | } | |
392 | if (!(ctx->options & E2F_OPT_READONLY)) { | |
393 | fs->super->s_state &= ~EXT2_VALID_FS; | |
394 | ext2fs_mark_super_dirty(fs); | |
395 | } | |
396 | goto cleanup; | |
397 | } | |
398 | dind_buf = (__u32 *) e2fsck_allocate_memory(ctx, fs->blocksize * 2, | |
399 | "resize dind buffer"); | |
400 | ind_buf = (__u32 *) ((char *) dind_buf + fs->blocksize); | |
401 | ||
dc8ce346 | 402 | retval = ext2fs_read_ind_block(fs, blk, dind_buf); |
c3ffaf83 TT |
403 | if (retval) |
404 | goto resize_inode_invalid; | |
405 | ||
406 | gdt_off = fs->desc_blocks; | |
407 | pblk = fs->super->s_first_data_block + 1 + fs->desc_blocks; | |
25567a7b TT |
408 | if (fs->blocksize == 1024 && fs->super->s_first_data_block == 0) |
409 | pblk++; /* Deal with 1024 blocksize bigalloc fs */ | |
efc6f628 | 410 | for (i = 0; i < fs->super->s_reserved_gdt_blocks / 4; |
c3ffaf83 TT |
411 | i++, gdt_off++, pblk++) { |
412 | gdt_off %= fs->blocksize/4; | |
413 | if (dind_buf[gdt_off] != pblk) | |
414 | goto resize_inode_invalid; | |
dc8ce346 | 415 | retval = ext2fs_read_ind_block(fs, pblk, ind_buf); |
efc6f628 | 416 | if (retval) |
c3ffaf83 TT |
417 | goto resize_inode_invalid; |
418 | ind_off = 0; | |
419 | for (j = 1; j < fs->group_desc_count; j++) { | |
420 | if (!ext2fs_bg_has_super(fs, j)) | |
421 | continue; | |
422 | expect = pblk + (j * fs->super->s_blocks_per_group); | |
423 | if (ind_buf[ind_off] != expect) | |
424 | goto resize_inode_invalid; | |
425 | ind_off++; | |
426 | } | |
427 | } | |
428 | ||
429 | cleanup: | |
430 | if (dind_buf) | |
431 | ext2fs_free_mem(&dind_buf); | |
432 | ||
433 | } | |
80bfaa3e | 434 | |
f77704e4 TT |
435 | /* |
436 | * This function checks the dirhash signed/unsigned hint if necessary. | |
437 | */ | |
642935c0 | 438 | static void e2fsck_fix_dirhash_hint(e2fsck_t ctx) |
f77704e4 TT |
439 | { |
440 | struct ext2_super_block *sb = ctx->fs->super; | |
441 | struct problem_context pctx; | |
f77704e4 TT |
442 | char c; |
443 | ||
444 | if ((ctx->options & E2F_OPT_READONLY) || | |
445 | !(sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) || | |
446 | (sb->s_flags & (EXT2_FLAGS_SIGNED_HASH|EXT2_FLAGS_UNSIGNED_HASH))) | |
447 | return; | |
448 | ||
449 | c = (char) 255; | |
450 | ||
451 | clear_problem_context(&pctx); | |
452 | if (fix_problem(ctx, PR_0_DIRHASH_HINT, &pctx)) { | |
453 | if (((int) c) == -1) { | |
454 | sb->s_flags |= EXT2_FLAGS_SIGNED_HASH; | |
455 | } else { | |
456 | sb->s_flags |= EXT2_FLAGS_UNSIGNED_HASH; | |
457 | } | |
458 | ext2fs_mark_super_dirty(ctx->fs); | |
459 | } | |
460 | } | |
461 | ||
462 | ||
1b6bf175 TT |
463 | void check_super_block(e2fsck_t ctx) |
464 | { | |
465 | ext2_filsys fs = ctx->fs; | |
6dc64392 | 466 | blk64_t first_block, last_block; |
5dd8f963 | 467 | struct ext2_super_block *sb = fs->super; |
68477355 | 468 | unsigned int ipg_max; |
26ea4899 | 469 | problem_t problem; |
6dc64392 | 470 | blk64_t blocks_per_group = fs->super->s_blocks_per_group; |
44fe08f1 | 471 | __u32 bpg_max, cpg_max; |
78cf0547 | 472 | int inodes_per_block; |
89db86d3 | 473 | int inode_size; |
ba5131f6 | 474 | int accept_time_fudge; |
177839e2 | 475 | int broken_system_clock; |
7f813ba3 | 476 | dgrp_t i; |
6dc64392 | 477 | blk64_t should_be; |
1b6bf175 | 478 | struct problem_context pctx; |
6dc64392 | 479 | blk64_t free_blocks = 0; |
5d38ef1d | 480 | ino_t free_inodes = 0; |
80875db5 | 481 | int csum_flag, clear_test_fs_flag; |
b21bf267 AD |
482 | |
483 | inodes_per_block = EXT2_INODES_PER_BLOCK(fs->super); | |
484 | ipg_max = inodes_per_block * (blocks_per_group - 4); | |
485 | if (ipg_max > EXT2_MAX_INODES_PER_GROUP(sb)) | |
486 | ipg_max = EXT2_MAX_INODES_PER_GROUP(sb); | |
44fe08f1 TT |
487 | cpg_max = 8 * EXT2_BLOCK_SIZE(sb); |
488 | if (cpg_max > EXT2_MAX_CLUSTERS_PER_GROUP(sb)) | |
489 | cpg_max = EXT2_MAX_CLUSTERS_PER_GROUP(sb); | |
490 | bpg_max = 8 * EXT2_BLOCK_SIZE(sb) * EXT2FS_CLUSTER_RATIO(fs); | |
b21bf267 AD |
491 | if (bpg_max > EXT2_MAX_BLOCKS_PER_GROUP(sb)) |
492 | bpg_max = EXT2_MAX_BLOCKS_PER_GROUP(sb); | |
1b6bf175 | 493 | |
54dc7ca2 | 494 | ctx->invalid_inode_bitmap_flag = (int *) e2fsck_allocate_memory(ctx, |
f8188fff | 495 | sizeof(int) * fs->group_desc_count, "invalid_inode_bitmap"); |
54dc7ca2 | 496 | ctx->invalid_block_bitmap_flag = (int *) e2fsck_allocate_memory(ctx, |
f8188fff | 497 | sizeof(int) * fs->group_desc_count, "invalid_block_bitmap"); |
54dc7ca2 | 498 | ctx->invalid_inode_table_flag = (int *) e2fsck_allocate_memory(ctx, |
f8188fff | 499 | sizeof(int) * fs->group_desc_count, "invalid_inode_table"); |
b21bf267 | 500 | |
1b6bf175 TT |
501 | clear_problem_context(&pctx); |
502 | ||
503 | /* | |
504 | * Verify the super block constants... | |
505 | */ | |
5dd8f963 | 506 | check_super_value(ctx, "inodes_count", sb->s_inodes_count, |
1b6bf175 | 507 | MIN_CHECK, 1, 0); |
4efbac6f | 508 | check_super_value(ctx, "blocks_count", ext2fs_blocks_count(sb), |
1b6bf175 | 509 | MIN_CHECK, 1, 0); |
5dd8f963 | 510 | check_super_value(ctx, "first_data_block", sb->s_first_data_block, |
4efbac6f | 511 | MAX_CHECK, 0, ext2fs_blocks_count(sb)); |
5dd8f963 | 512 | check_super_value(ctx, "log_block_size", sb->s_log_block_size, |
31e29a12 TT |
513 | MIN_CHECK | MAX_CHECK, 0, |
514 | EXT2_MAX_BLOCK_LOG_SIZE - EXT2_MIN_BLOCK_LOG_SIZE); | |
412376ef TT |
515 | check_super_value(ctx, "log_cluster_size", |
516 | sb->s_log_cluster_size, | |
517 | MIN_CHECK | MAX_CHECK, sb->s_log_block_size, | |
518 | (EXT2_MAX_CLUSTER_LOG_SIZE - | |
519 | EXT2_MIN_CLUSTER_LOG_SIZE)); | |
520 | check_super_value(ctx, "clusters_per_group", sb->s_clusters_per_group, | |
44fe08f1 | 521 | MIN_CHECK | MAX_CHECK, 8, cpg_max); |
5dd8f963 | 522 | check_super_value(ctx, "blocks_per_group", sb->s_blocks_per_group, |
b21bf267 | 523 | MIN_CHECK | MAX_CHECK, 8, bpg_max); |
5dd8f963 | 524 | check_super_value(ctx, "inodes_per_group", sb->s_inodes_per_group, |
b21bf267 | 525 | MIN_CHECK | MAX_CHECK, inodes_per_block, ipg_max); |
4efbac6f VAH |
526 | check_super_value(ctx, "r_blocks_count", ext2fs_r_blocks_count(sb), |
527 | MAX_CHECK, 0, ext2fs_blocks_count(sb) / 2); | |
efc6f628 | 528 | check_super_value(ctx, "reserved_gdt_blocks", |
c3ffaf83 TT |
529 | sb->s_reserved_gdt_blocks, MAX_CHECK, 0, |
530 | fs->blocksize/4); | |
1f790a7c TT |
531 | if (sb->s_rev_level > EXT2_GOOD_OLD_REV) |
532 | check_super_value(ctx, "first_ino", sb->s_first_ino, | |
533 | MIN_CHECK | MAX_CHECK, | |
534 | EXT2_GOOD_OLD_FIRST_INO, sb->s_inodes_count); | |
89db86d3 TT |
535 | inode_size = EXT2_INODE_SIZE(sb); |
536 | check_super_value(ctx, "inode_size", | |
537 | inode_size, MIN_CHECK | MAX_CHECK, | |
538 | EXT2_GOOD_OLD_INODE_SIZE, fs->blocksize); | |
44fe08f1 TT |
539 | if (sb->s_blocks_per_group != (sb->s_clusters_per_group * |
540 | EXT2FS_CLUSTER_RATIO(fs))) { | |
541 | pctx.num = sb->s_clusters_per_group * EXT2FS_CLUSTER_RATIO(fs); | |
542 | pctx.str = "block_size"; | |
543 | fix_problem(ctx, PR_0_MISC_CORRUPT_SUPER, &pctx); | |
544 | ctx->flags |= E2F_FLAG_ABORT; /* never get here! */ | |
545 | return; | |
546 | } | |
89db86d3 TT |
547 | if (inode_size & (inode_size - 1)) { |
548 | pctx.num = inode_size; | |
549 | pctx.str = "inode_size"; | |
550 | fix_problem(ctx, PR_0_MISC_CORRUPT_SUPER, &pctx); | |
551 | ctx->flags |= E2F_FLAG_ABORT; /* never get here! */ | |
552 | return; | |
553 | } | |
efc6f628 | 554 | |
d2af1bdd | 555 | if ((ctx->flags & E2F_FLAG_GOT_DEVSIZE) && |
4efbac6f VAH |
556 | (ctx->num_blocks < ext2fs_blocks_count(sb))) { |
557 | pctx.blk = ext2fs_blocks_count(sb); | |
d2af1bdd TT |
558 | pctx.blk2 = ctx->num_blocks; |
559 | if (fix_problem(ctx, PR_0_FS_SIZE_WRONG, &pctx)) { | |
08b21301 TT |
560 | ctx->flags |= E2F_FLAG_ABORT; |
561 | return; | |
562 | } | |
1b6bf175 TT |
563 | } |
564 | ||
25567a7b TT |
565 | should_be = (sb->s_log_block_size == 0 && |
566 | EXT2FS_CLUSTER_RATIO(fs) == 1) ? 1 : 0; | |
5dd8f963 TT |
567 | if (sb->s_first_data_block != should_be) { |
568 | pctx.blk = sb->s_first_data_block; | |
1b6bf175 TT |
569 | pctx.blk2 = should_be; |
570 | fix_problem(ctx, PR_0_FIRST_DATA_BLOCK, &pctx); | |
08b21301 TT |
571 | ctx->flags |= E2F_FLAG_ABORT; |
572 | return; | |
1b6bf175 TT |
573 | } |
574 | ||
5dd8f963 TT |
575 | should_be = sb->s_inodes_per_group * fs->group_desc_count; |
576 | if (sb->s_inodes_count != should_be) { | |
577 | pctx.ino = sb->s_inodes_count; | |
d4b0ce03 TT |
578 | pctx.ino2 = should_be; |
579 | if (fix_problem(ctx, PR_0_INODE_COUNT_WRONG, &pctx)) { | |
5dd8f963 | 580 | sb->s_inodes_count = should_be; |
d4b0ce03 TT |
581 | ext2fs_mark_super_dirty(fs); |
582 | } | |
583 | } | |
584 | ||
27b2297d DW |
585 | /* Is 64bit set and extents unset? */ |
586 | if (EXT2_HAS_INCOMPAT_FEATURE(fs->super, | |
587 | EXT4_FEATURE_INCOMPAT_64BIT) && | |
588 | !EXT2_HAS_INCOMPAT_FEATURE(fs->super, | |
589 | EXT3_FEATURE_INCOMPAT_EXTENTS) && | |
590 | fix_problem(ctx, PR_0_64BIT_WITHOUT_EXTENTS, &pctx)) { | |
591 | fs->super->s_feature_incompat |= | |
592 | EXT3_FEATURE_INCOMPAT_EXTENTS; | |
593 | ext2fs_mark_super_dirty(fs); | |
594 | } | |
595 | ||
1b6bf175 TT |
596 | /* |
597 | * Verify the group descriptors.... | |
598 | */ | |
88b34b1f | 599 | first_block = sb->s_first_data_block; |
4efbac6f | 600 | last_block = ext2fs_blocks_count(sb)-1; |
1b6bf175 | 601 | |
49a7360b JS |
602 | csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super, |
603 | EXT4_FEATURE_RO_COMPAT_GDT_CSUM); | |
d7cca6b0 | 604 | for (i = 0; i < fs->group_desc_count; i++) { |
1b6bf175 | 605 | pctx.group = i; |
abf23439 | 606 | |
88b34b1f JS |
607 | if (!EXT2_HAS_INCOMPAT_FEATURE(fs->super, |
608 | EXT4_FEATURE_INCOMPAT_FLEX_BG)) { | |
b49f78fe TT |
609 | first_block = ext2fs_group_first_block2(fs, i); |
610 | last_block = ext2fs_group_last_block2(fs, i); | |
88b34b1f | 611 | } |
bb1a46a4 | 612 | |
d7cca6b0 VAH |
613 | if ((ext2fs_block_bitmap_loc(fs, i) < first_block) || |
614 | (ext2fs_block_bitmap_loc(fs, i) > last_block)) { | |
615 | pctx.blk = ext2fs_block_bitmap_loc(fs, i); | |
24bfb443 | 616 | if (fix_problem(ctx, PR_0_BB_NOT_GROUP, &pctx)) |
d7cca6b0 | 617 | ext2fs_block_bitmap_loc_set(fs, i, 0); |
24bfb443 | 618 | } |
d7cca6b0 | 619 | if (ext2fs_block_bitmap_loc(fs, i) == 0) { |
24bfb443 TT |
620 | ctx->invalid_block_bitmap_flag[i]++; |
621 | ctx->invalid_bitmaps++; | |
1b6bf175 | 622 | } |
d7cca6b0 VAH |
623 | if ((ext2fs_inode_bitmap_loc(fs, i) < first_block) || |
624 | (ext2fs_inode_bitmap_loc(fs, i) > last_block)) { | |
625 | pctx.blk = ext2fs_inode_bitmap_loc(fs, i); | |
24bfb443 | 626 | if (fix_problem(ctx, PR_0_IB_NOT_GROUP, &pctx)) |
d7cca6b0 | 627 | ext2fs_inode_bitmap_loc_set(fs, i, 0); |
24bfb443 | 628 | } |
d7cca6b0 | 629 | if (ext2fs_inode_bitmap_loc(fs, i) == 0) { |
24bfb443 TT |
630 | ctx->invalid_inode_bitmap_flag[i]++; |
631 | ctx->invalid_bitmaps++; | |
1b6bf175 | 632 | } |
d7cca6b0 VAH |
633 | if ((ext2fs_inode_table_loc(fs, i) < first_block) || |
634 | ((ext2fs_inode_table_loc(fs, i) + | |
bb1a46a4 | 635 | fs->inode_blocks_per_group - 1) > last_block)) { |
d7cca6b0 | 636 | pctx.blk = ext2fs_inode_table_loc(fs, i); |
24bfb443 | 637 | if (fix_problem(ctx, PR_0_ITABLE_NOT_GROUP, &pctx)) |
d7cca6b0 | 638 | ext2fs_inode_table_loc_set(fs, i, 0); |
24bfb443 | 639 | } |
d7cca6b0 | 640 | if (ext2fs_inode_table_loc(fs, i) == 0) { |
24bfb443 TT |
641 | ctx->invalid_inode_table_flag[i]++; |
642 | ctx->invalid_bitmaps++; | |
1b6bf175 | 643 | } |
d7cca6b0 VAH |
644 | free_blocks += ext2fs_bg_free_blocks_count(fs, i); |
645 | free_inodes += ext2fs_bg_free_inodes_count(fs, i); | |
550a4afa | 646 | |
d7cca6b0 VAH |
647 | if ((ext2fs_bg_free_blocks_count(fs, i) > sb->s_blocks_per_group) || |
648 | (ext2fs_bg_free_inodes_count(fs, i) > sb->s_inodes_per_group) || | |
649 | (ext2fs_bg_used_dirs_count(fs, i) > sb->s_inodes_per_group)) | |
550a4afa TT |
650 | ext2fs_unmark_valid(fs); |
651 | ||
0d5439c8 | 652 | should_be = 0; |
49a7360b | 653 | if (!ext2fs_group_desc_csum_verify(fs, i)) { |
b9a64a51 TT |
654 | pctx.csum1 = ext2fs_bg_checksum(fs, i); |
655 | pctx.csum2 = ext2fs_group_desc_csum(fs, i); | |
49a7360b | 656 | if (fix_problem(ctx, PR_0_GDT_CSUM, &pctx)) { |
e633b58a ES |
657 | ext2fs_bg_flags_clear(fs, i, EXT2_BG_BLOCK_UNINIT); |
658 | ext2fs_bg_flags_clear(fs, i, EXT2_BG_INODE_UNINIT); | |
d7cca6b0 | 659 | ext2fs_bg_itable_unused_set(fs, i, 0); |
0d5439c8 | 660 | should_be = 1; |
49a7360b JS |
661 | } |
662 | ext2fs_unmark_valid(fs); | |
663 | } | |
664 | ||
16b851cd | 665 | if (!csum_flag && |
cd65a24e TT |
666 | (ext2fs_bg_flags_test(fs, i, EXT2_BG_BLOCK_UNINIT) || |
667 | ext2fs_bg_flags_test(fs, i, EXT2_BG_INODE_UNINIT) || | |
d7cca6b0 | 668 | ext2fs_bg_itable_unused(fs, i) != 0)) { |
49a7360b | 669 | if (fix_problem(ctx, PR_0_GDT_UNINIT, &pctx)) { |
e633b58a ES |
670 | ext2fs_bg_flags_clear(fs, i, EXT2_BG_BLOCK_UNINIT); |
671 | ext2fs_bg_flags_clear(fs, i, EXT2_BG_INODE_UNINIT); | |
d7cca6b0 | 672 | ext2fs_bg_itable_unused_set(fs, i, 0); |
0d5439c8 | 673 | should_be = 1; |
49a7360b JS |
674 | } |
675 | ext2fs_unmark_valid(fs); | |
676 | } | |
0d5439c8 AD |
677 | |
678 | if (i == fs->group_desc_count - 1 && | |
cd65a24e | 679 | ext2fs_bg_flags_test(fs, i, EXT2_BG_BLOCK_UNINIT)) { |
0d5439c8 | 680 | if (fix_problem(ctx, PR_0_BB_UNINIT_LAST, &pctx)) { |
e633b58a | 681 | ext2fs_bg_flags_clear(fs, i, EXT2_BG_BLOCK_UNINIT); |
0d5439c8 AD |
682 | should_be = 1; |
683 | } | |
684 | ext2fs_unmark_valid(fs); | |
685 | } | |
686 | ||
49a7360b | 687 | if (csum_flag && |
d7cca6b0 VAH |
688 | (ext2fs_bg_itable_unused(fs, i) > ext2fs_bg_free_inodes_count(fs, i) || |
689 | ext2fs_bg_itable_unused(fs, i) > sb->s_inodes_per_group)) { | |
690 | pctx.blk = ext2fs_bg_itable_unused(fs, i); | |
0d5439c8 | 691 | if (fix_problem(ctx, PR_0_GDT_ITABLE_UNUSED, &pctx)) { |
d7cca6b0 | 692 | ext2fs_bg_itable_unused_set(fs, i, 0); |
0d5439c8 AD |
693 | should_be = 1; |
694 | } | |
49a7360b JS |
695 | ext2fs_unmark_valid(fs); |
696 | } | |
0d5439c8 AD |
697 | |
698 | if (should_be) | |
699 | ext2fs_group_desc_csum_set(fs, i); | |
bee24f36 VAH |
700 | /* If the user aborts e2fsck by typing ^C, stop right away */ |
701 | if (ctx->flags & E2F_FLAG_SIGNAL_MASK) | |
702 | return; | |
1b6bf175 | 703 | } |
550a4afa | 704 | |
fe75afbf | 705 | ctx->free_blocks = EXT2FS_C2B(fs, free_blocks); |
a3efe484 | 706 | ctx->free_inodes = free_inodes; |
efc6f628 | 707 | |
4efbac6f | 708 | if ((ext2fs_free_blocks_count(sb) > ext2fs_blocks_count(sb)) || |
550a4afa TT |
709 | (sb->s_free_inodes_count > sb->s_inodes_count)) |
710 | ext2fs_unmark_valid(fs); | |
711 | ||
712 | ||
1b6bf175 TT |
713 | /* |
714 | * If we have invalid bitmaps, set the error state of the | |
715 | * filesystem. | |
716 | */ | |
717 | if (ctx->invalid_bitmaps && !(ctx->options & E2F_OPT_READONLY)) { | |
550a4afa | 718 | sb->s_state &= ~EXT2_VALID_FS; |
1b6bf175 TT |
719 | ext2fs_mark_super_dirty(fs); |
720 | } | |
721 | ||
4ea0a110 | 722 | clear_problem_context(&pctx); |
efc6f628 | 723 | |
54be2ccc | 724 | #ifndef EXT2_SKIP_UUID |
1b6bf175 TT |
725 | /* |
726 | * If the UUID field isn't assigned, assign it. | |
727 | */ | |
5dd8f963 | 728 | if (!(ctx->options & E2F_OPT_READONLY) && uuid_is_null(sb->s_uuid)) { |
1b6bf175 | 729 | if (fix_problem(ctx, PR_0_ADD_UUID, &pctx)) { |
5dd8f963 | 730 | uuid_generate(sb->s_uuid); |
86db36ab | 731 | fs->flags |= EXT2_FLAG_DIRTY; |
299d7424 | 732 | fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; |
1b6bf175 TT |
733 | } |
734 | } | |
54be2ccc | 735 | #endif |
2a77a784 | 736 | |
80875db5 TT |
737 | /* |
738 | * Check to see if we should disable the test_fs flag | |
739 | */ | |
740 | profile_get_boolean(ctx->profile, "options", | |
741 | "clear_test_fs_flag", 0, 1, | |
742 | &clear_test_fs_flag); | |
743 | if (!(ctx->options & E2F_OPT_READONLY) && | |
744 | clear_test_fs_flag && | |
745 | (fs->super->s_flags & EXT2_FLAGS_TEST_FILESYS) && | |
746 | (fs_proc_check("ext4") || check_for_modules("ext4"))) { | |
747 | if (fix_problem(ctx, PR_0_CLEAR_TESTFS_FLAG, &pctx)) { | |
748 | fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS; | |
86db36ab | 749 | fs->flags |= EXT2_FLAG_DIRTY; |
80875db5 TT |
750 | fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; |
751 | } | |
752 | } | |
753 | ||
4ea0a110 TT |
754 | /* |
755 | * For the Hurd, check to see if the filetype option is set, | |
756 | * since it doesn't support it. | |
757 | */ | |
80bfaa3e TT |
758 | if (!(ctx->options & E2F_OPT_READONLY) && |
759 | fs->super->s_creator_os == EXT2_OS_HURD && | |
4ea0a110 TT |
760 | (fs->super->s_feature_incompat & |
761 | EXT2_FEATURE_INCOMPAT_FILETYPE)) { | |
762 | if (fix_problem(ctx, PR_0_HURD_CLEAR_FILETYPE, &pctx)) { | |
763 | fs->super->s_feature_incompat &= | |
764 | ~EXT2_FEATURE_INCOMPAT_FILETYPE; | |
765 | ext2fs_mark_super_dirty(fs); | |
0cfce7f7 | 766 | fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; |
4ea0a110 TT |
767 | } |
768 | } | |
80bfaa3e | 769 | |
7b59f1ef TT |
770 | /* |
771 | * If we have any of the compatibility flags set, we need to have a | |
772 | * revision 1 filesystem. Most kernels will not check the flags on | |
773 | * a rev 0 filesystem and we may have corruption issues because of | |
774 | * the incompatible changes to the filesystem. | |
775 | */ | |
776 | if (!(ctx->options & E2F_OPT_READONLY) && | |
777 | fs->super->s_rev_level == EXT2_GOOD_OLD_REV && | |
778 | (fs->super->s_feature_compat || | |
779 | fs->super->s_feature_ro_compat || | |
780 | fs->super->s_feature_incompat) && | |
781 | fix_problem(ctx, PR_0_FS_REV_LEVEL, &pctx)) { | |
a917d1cc | 782 | ext2fs_update_dynamic_rev(fs); |
7b59f1ef | 783 | ext2fs_mark_super_dirty(fs); |
0cfce7f7 | 784 | fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; |
7b59f1ef TT |
785 | } |
786 | ||
80bfaa3e TT |
787 | /* |
788 | * Clean up any orphan inodes, if present. | |
789 | */ | |
790 | if (!(ctx->options & E2F_OPT_READONLY) && release_orphan_inodes(ctx)) { | |
791 | fs->super->s_state &= ~EXT2_VALID_FS; | |
7b59f1ef | 792 | ext2fs_mark_super_dirty(fs); |
80bfaa3e TT |
793 | } |
794 | ||
60702c26 | 795 | /* |
ba5131f6 TT |
796 | * Unfortunately, due to Windows' unfortunate design decision |
797 | * to configure the hardware clock to tick localtime, instead | |
798 | * of the more proper and less error-prone UTC time, many | |
799 | * users end up in the situation where the system clock is | |
800 | * incorrectly set at the time when e2fsck is run. | |
801 | * | |
802 | * Historically this was usually due to some distributions | |
803 | * having buggy init scripts and/or installers that didn't | |
804 | * correctly detect this case and take appropriate | |
805 | * countermeasures. However, it's still possible, despite the | |
806 | * best efforts of init script and installer authors to not be | |
807 | * able to detect this misconfiguration, usually due to a | |
808 | * buggy or misconfigured virtualization manager or the | |
809 | * installer not having access to a network time server during | |
810 | * the installation process. So by default, we allow the | |
811 | * superblock times to be fudged by up to 24 hours. This can | |
812 | * be disabled by setting options.accept_time_fudge to the | |
813 | * boolean value of false in e2fsck.conf. We also support | |
814 | * options.buggy_init_scripts for backwards compatibility. | |
60702c26 | 815 | */ |
ba5131f6 TT |
816 | profile_get_boolean(ctx->profile, "options", "accept_time_fudge", |
817 | 0, 1, &accept_time_fudge); | |
60702c26 | 818 | profile_get_boolean(ctx->profile, "options", "buggy_init_scripts", |
ba5131f6 TT |
819 | 0, accept_time_fudge, &accept_time_fudge); |
820 | ctx->time_fudge = accept_time_fudge ? 86400 : 0; | |
60702c26 | 821 | |
177839e2 TT |
822 | profile_get_boolean(ctx->profile, "options", "broken_system_clock", |
823 | 0, 0, &broken_system_clock); | |
824 | ||
efc6f628 | 825 | /* |
8dceb924 TT |
826 | * Check to see if the superblock last mount time or last |
827 | * write time is in the future. | |
828 | */ | |
177839e2 TT |
829 | if (!broken_system_clock && |
830 | !(ctx->flags & E2F_FLAG_TIME_INSANE) && | |
831 | fs->super->s_mtime > (__u32) ctx->now) { | |
8dceb924 | 832 | pctx.num = fs->super->s_mtime; |
26ea4899 TT |
833 | problem = PR_0_FUTURE_SB_LAST_MOUNT; |
834 | if (fs->super->s_mtime <= (__u32) ctx->now + ctx->time_fudge) | |
835 | problem = PR_0_FUTURE_SB_LAST_MOUNT_FUDGED; | |
836 | if (fix_problem(ctx, problem, &pctx)) { | |
8dceb924 | 837 | fs->super->s_mtime = ctx->now; |
86db36ab | 838 | fs->flags |= EXT2_FLAG_DIRTY; |
8dceb924 TT |
839 | } |
840 | } | |
177839e2 TT |
841 | if (!broken_system_clock && |
842 | !(ctx->flags & E2F_FLAG_TIME_INSANE) && | |
843 | fs->super->s_wtime > (__u32) ctx->now) { | |
8dceb924 | 844 | pctx.num = fs->super->s_wtime; |
fe26a55a | 845 | problem = PR_0_FUTURE_SB_LAST_WRITE; |
26ea4899 | 846 | if (fs->super->s_wtime <= (__u32) ctx->now + ctx->time_fudge) |
61a9d2b3 | 847 | problem = PR_0_FUTURE_SB_LAST_WRITE_FUDGED; |
26ea4899 | 848 | if (fix_problem(ctx, problem, &pctx)) { |
8dceb924 | 849 | fs->super->s_wtime = ctx->now; |
86db36ab | 850 | fs->flags |= EXT2_FLAG_DIRTY; |
8dceb924 TT |
851 | } |
852 | } | |
853 | ||
773fd8a1 TT |
854 | /* |
855 | * Move the ext3 journal file, if necessary. | |
856 | */ | |
857 | e2fsck_move_ext3_journal(ctx); | |
b1c52b26 TT |
858 | |
859 | /* | |
860 | * Fix journal hint, if necessary | |
861 | */ | |
862 | e2fsck_fix_ext3_journal_hint(ctx); | |
863 | ||
f77704e4 TT |
864 | /* |
865 | * Add dirhash hint if necessary | |
866 | */ | |
867 | e2fsck_fix_dirhash_hint(ctx); | |
868 | ||
624e4a64 AK |
869 | /* |
870 | * Hide quota inodes if necessary. | |
871 | */ | |
872 | e2fsck_hide_quota(ctx); | |
873 | ||
1b6bf175 TT |
874 | return; |
875 | } | |
0c37f456 TT |
876 | |
877 | /* | |
878 | * Check to see if we should backup the master sb to the backup super | |
a8cde73a | 879 | * blocks. Returns non-zero if the sb should be backed up. |
0c37f456 | 880 | */ |
a8cde73a TT |
881 | |
882 | /* | |
883 | * A few flags are set on the fly by the kernel, but only in the | |
884 | * primary superblock. This is actually a bad thing, and we should | |
885 | * try to discourage it in the future. In particular, for the newer | |
886 | * ext4 files, especially EXT4_FEATURE_RO_COMPAT_DIR_NLINK and | |
887 | * EXT3_FEATURE_INCOMPAT_EXTENTS. So some of these may go away in the | |
d9ff474b ES |
888 | * future. EXT3_FEATURE_INCOMPAT_RECOVER may also get set when |
889 | * copying the primary superblock during online resize. | |
a8cde73a TT |
890 | * |
891 | * The kernel will set EXT2_FEATURE_COMPAT_EXT_ATTR, but | |
892 | * unfortunately, we shouldn't ignore it since if it's not set in the | |
893 | * backup, the extended attributes in the filesystem will be stripped | |
894 | * away. | |
895 | */ | |
896 | #define FEATURE_RO_COMPAT_IGNORE (EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \ | |
897 | EXT4_FEATURE_RO_COMPAT_DIR_NLINK) | |
d9ff474b ES |
898 | #define FEATURE_INCOMPAT_IGNORE (EXT3_FEATURE_INCOMPAT_EXTENTS| \ |
899 | EXT3_FEATURE_INCOMPAT_RECOVER) | |
a8cde73a | 900 | |
0c37f456 TT |
901 | int check_backup_super_block(e2fsck_t ctx) |
902 | { | |
903 | ext2_filsys fs = ctx->fs; | |
0c37f456 TT |
904 | errcode_t retval; |
905 | dgrp_t g; | |
6dc64392 | 906 | blk64_t sb; |
0c37f456 | 907 | int ret = 0; |
982dd30c TT |
908 | char buf[SUPERBLOCK_SIZE]; |
909 | struct ext2_super_block *backup_sb; | |
0c37f456 TT |
910 | |
911 | /* | |
912 | * If we are already writing out the backup blocks, then we | |
913 | * don't need to test. Also, if the filesystem is invalid, or | |
914 | * the check was aborted or cancelled, we also don't want to | |
915 | * do the backup. If the filesystem was opened read-only then | |
916 | * we can't do the backup. | |
917 | */ | |
918 | if (((fs->flags & EXT2_FLAG_MASTER_SB_ONLY) == 0) || | |
919 | !ext2fs_test_valid(fs) || | |
920 | (fs->super->s_state & EXT2_ERROR_FS) || | |
921 | (ctx->flags & (E2F_FLAG_ABORT | E2F_FLAG_CANCEL)) || | |
922 | (ctx->options & E2F_OPT_READONLY)) | |
923 | return 0; | |
924 | ||
925 | for (g = 1; g < fs->group_desc_count; g++) { | |
926 | if (!ext2fs_bg_has_super(fs, g)) | |
927 | continue; | |
928 | ||
027b0577 | 929 | sb = ext2fs_group_first_block2(fs, g); |
0c37f456 | 930 | |
982dd30c TT |
931 | retval = io_channel_read_blk(fs->io, sb, -SUPERBLOCK_SIZE, |
932 | buf); | |
933 | if (retval) | |
934 | continue; | |
935 | backup_sb = (struct ext2_super_block *) buf; | |
936 | #ifdef WORDS_BIGENDIAN | |
937 | ext2fs_swap_super(backup_sb); | |
938 | #endif | |
939 | if ((backup_sb->s_magic != EXT2_SUPER_MAGIC) || | |
940 | (backup_sb->s_rev_level > EXT2_LIB_CURRENT_REV) || | |
941 | ((backup_sb->s_log_block_size + EXT2_MIN_BLOCK_LOG_SIZE) > | |
942 | EXT2_MAX_BLOCK_LOG_SIZE) || | |
943 | (EXT2_INODE_SIZE(backup_sb) < EXT2_GOOD_OLD_INODE_SIZE)) | |
0c37f456 | 944 | continue; |
0c37f456 | 945 | |
a8cde73a | 946 | #define SUPER_INCOMPAT_DIFFERENT(x) \ |
982dd30c TT |
947 | ((fs->super->x & ~FEATURE_INCOMPAT_IGNORE) != \ |
948 | (backup_sb->x & ~FEATURE_INCOMPAT_IGNORE)) | |
a8cde73a | 949 | #define SUPER_RO_COMPAT_DIFFERENT(x) \ |
982dd30c TT |
950 | ((fs->super->x & ~FEATURE_RO_COMPAT_IGNORE) != \ |
951 | (backup_sb->x & ~FEATURE_RO_COMPAT_IGNORE)) | |
a8cde73a | 952 | #define SUPER_DIFFERENT(x) \ |
982dd30c | 953 | (fs->super->x != backup_sb->x) |
a8cde73a | 954 | |
0c37f456 | 955 | if (SUPER_DIFFERENT(s_feature_compat) || |
a8cde73a TT |
956 | SUPER_INCOMPAT_DIFFERENT(s_feature_incompat) || |
957 | SUPER_RO_COMPAT_DIFFERENT(s_feature_ro_compat) || | |
0c37f456 TT |
958 | SUPER_DIFFERENT(s_blocks_count) || |
959 | SUPER_DIFFERENT(s_inodes_count) || | |
982dd30c | 960 | memcmp(fs->super->s_uuid, backup_sb->s_uuid, |
0c37f456 TT |
961 | sizeof(fs->super->s_uuid))) |
962 | ret = 1; | |
0c37f456 TT |
963 | break; |
964 | } | |
965 | return ret; | |
966 | } |