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Commit | Line | Data |
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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 | |
11d1116a | 25 | #define LOG2_CHECK 4 |
1b6bf175 TT |
26 | |
27 | static void check_super_value(e2fsck_t ctx, const char *descr, | |
28 | unsigned long value, int flags, | |
7f813ba3 | 29 | unsigned long min_val, unsigned long max_val) |
1b6bf175 TT |
30 | { |
31 | struct problem_context pctx; | |
32 | ||
4d46e6c7 AD |
33 | if ((flags & MIN_CHECK && value < min_val) || |
34 | (flags & MAX_CHECK && value > max_val) || | |
35 | (flags & LOG2_CHECK && (value & (value - 1)) != 0)) { | |
1b6bf175 TT |
36 | clear_problem_context(&pctx); |
37 | pctx.num = value; | |
38 | pctx.str = descr; | |
39 | fix_problem(ctx, PR_0_MISC_CORRUPT_SUPER, &pctx); | |
08b21301 | 40 | ctx->flags |= E2F_FLAG_ABORT; /* never get here! */ |
1b6bf175 TT |
41 | } |
42 | } | |
43 | ||
32cb8473 TT |
44 | static void check_super_value64(e2fsck_t ctx, const char *descr, |
45 | __u64 value, int flags, | |
46 | __u64 min_val, __u64 max_val) | |
47 | { | |
48 | struct problem_context pctx; | |
49 | ||
50 | if ((flags & MIN_CHECK && value < min_val) || | |
51 | (flags & MAX_CHECK && value > max_val) || | |
52 | (flags & LOG2_CHECK && (value & (value - 1)) != 0)) { | |
53 | clear_problem_context(&pctx); | |
54 | pctx.num = value; | |
55 | pctx.str = descr; | |
56 | fix_problem(ctx, PR_0_MISC_CORRUPT_SUPER, &pctx); | |
57 | ctx->flags |= E2F_FLAG_ABORT; /* never get here! */ | |
58 | } | |
59 | } | |
60 | ||
80bfaa3e TT |
61 | /* |
62 | * helper function to release an inode | |
63 | */ | |
64 | struct process_block_struct { | |
8394902e TT |
65 | e2fsck_t ctx; |
66 | char *buf; | |
80bfaa3e | 67 | struct problem_context *pctx; |
8394902e TT |
68 | int truncating; |
69 | int truncate_offset; | |
54434927 | 70 | e2_blkcnt_t truncate_block; |
8394902e TT |
71 | int truncated_blocks; |
72 | int abort; | |
73 | errcode_t errcode; | |
707599bf | 74 | blk64_t last_cluster; |
7d79b40b | 75 | struct ext2_inode_large *inode; |
80bfaa3e TT |
76 | }; |
77 | ||
78 | static int release_inode_block(ext2_filsys fs, | |
6dc64392 | 79 | blk64_t *block_nr, |
54434927 | 80 | e2_blkcnt_t blockcnt, |
6dc64392 | 81 | blk64_t ref_blk EXT2FS_ATTR((unused)), |
54434927 | 82 | int ref_offset EXT2FS_ATTR((unused)), |
80bfaa3e TT |
83 | void *priv_data) |
84 | { | |
85 | struct process_block_struct *pb; | |
8394902e TT |
86 | e2fsck_t ctx; |
87 | struct problem_context *pctx; | |
6dc64392 | 88 | blk64_t blk = *block_nr; |
707599bf | 89 | blk64_t cluster = EXT2FS_B2C(fs, *block_nr); |
8394902e | 90 | int retval = 0; |
80bfaa3e TT |
91 | |
92 | pb = (struct process_block_struct *) priv_data; | |
93 | ctx = pb->ctx; | |
94 | pctx = pb->pctx; | |
95 | ||
96 | pctx->blk = blk; | |
97 | pctx->blkcount = blockcnt; | |
98 | ||
4a05268c | 99 | if (blk == 0) |
80bfaa3e TT |
100 | return 0; |
101 | ||
707599bf | 102 | if (pb->last_cluster == cluster) |
103 | return 0; | |
104 | ||
105 | pb->last_cluster = cluster; | |
106 | ||
80bfaa3e | 107 | if ((blk < fs->super->s_first_data_block) || |
4efbac6f | 108 | (blk >= ext2fs_blocks_count(fs->super))) { |
80bfaa3e | 109 | fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_BLOCK_NUM, pctx); |
53ef44c4 | 110 | return_abort: |
80bfaa3e TT |
111 | pb->abort = 1; |
112 | return BLOCK_ABORT; | |
113 | } | |
114 | ||
c5d2f50d | 115 | if (!ext2fs_test_block_bitmap2(fs->block_map, blk)) { |
80bfaa3e | 116 | fix_problem(ctx, PR_0_ORPHAN_ALREADY_CLEARED_BLOCK, pctx); |
53ef44c4 | 117 | goto return_abort; |
8394902e TT |
118 | } |
119 | ||
120 | /* | |
121 | * If we are deleting an orphan, then we leave the fields alone. | |
122 | * If we are truncating an orphan, then update the inode fields | |
123 | * and clean up any partial block data. | |
124 | */ | |
125 | if (pb->truncating) { | |
126 | /* | |
127 | * We only remove indirect blocks if they are | |
128 | * completely empty. | |
129 | */ | |
130 | if (blockcnt < 0) { | |
131 | int i, limit; | |
53ef44c4 | 132 | blk_t *bp; |
efc6f628 | 133 | |
24a117ab | 134 | pb->errcode = io_channel_read_blk64(fs->io, blk, 1, |
8394902e TT |
135 | pb->buf); |
136 | if (pb->errcode) | |
53ef44c4 | 137 | goto return_abort; |
8394902e TT |
138 | |
139 | limit = fs->blocksize >> 2; | |
53ef44c4 TT |
140 | for (i = 0, bp = (blk_t *) pb->buf; |
141 | i < limit; i++, bp++) | |
142 | if (*bp) | |
8394902e TT |
143 | return 0; |
144 | } | |
145 | /* | |
146 | * We don't remove direct blocks until we've reached | |
147 | * the truncation block. | |
148 | */ | |
149 | if (blockcnt >= 0 && blockcnt < pb->truncate_block) | |
150 | return 0; | |
151 | /* | |
152 | * If part of the last block needs truncating, we do | |
153 | * it here. | |
154 | */ | |
155 | if ((blockcnt == pb->truncate_block) && pb->truncate_offset) { | |
24a117ab | 156 | pb->errcode = io_channel_read_blk64(fs->io, blk, 1, |
8394902e TT |
157 | pb->buf); |
158 | if (pb->errcode) | |
53ef44c4 | 159 | goto return_abort; |
8394902e TT |
160 | memset(pb->buf + pb->truncate_offset, 0, |
161 | fs->blocksize - pb->truncate_offset); | |
24a117ab | 162 | pb->errcode = io_channel_write_blk64(fs->io, blk, 1, |
8394902e TT |
163 | pb->buf); |
164 | if (pb->errcode) | |
53ef44c4 | 165 | goto return_abort; |
8394902e TT |
166 | } |
167 | pb->truncated_blocks++; | |
168 | *block_nr = 0; | |
169 | retval |= BLOCK_CHANGED; | |
80bfaa3e | 170 | } |
efc6f628 | 171 | |
7d79b40b DW |
172 | if (ctx->qctx) |
173 | quota_data_sub(ctx->qctx, pb->inode, 0, ctx->fs->blocksize); | |
48f23054 | 174 | ext2fs_block_alloc_stats2(fs, blk, -1); |
e9e96584 | 175 | ctx->free_blocks++; |
8394902e | 176 | return retval; |
80bfaa3e | 177 | } |
efc6f628 | 178 | |
80bfaa3e TT |
179 | /* |
180 | * This function releases an inode. Returns 1 if an inconsistency was | |
8394902e TT |
181 | * found. If the inode has a link count, then it is being truncated and |
182 | * not deleted. | |
80bfaa3e | 183 | */ |
86c627ec | 184 | static int release_inode_blocks(e2fsck_t ctx, ext2_ino_t ino, |
7d79b40b | 185 | struct ext2_inode_large *inode, char *block_buf, |
80bfaa3e TT |
186 | struct problem_context *pctx) |
187 | { | |
0684a4f3 | 188 | struct process_block_struct pb; |
8394902e | 189 | ext2_filsys fs = ctx->fs; |
7d79b40b | 190 | blk64_t blk; |
80bfaa3e | 191 | errcode_t retval; |
0684a4f3 | 192 | __u32 count; |
80bfaa3e | 193 | |
7d79b40b | 194 | if (!ext2fs_inode_has_valid_blocks2(fs, EXT2_INODE(inode))) |
42475e28 TT |
195 | return 0; |
196 | ||
8394902e | 197 | pb.buf = block_buf + 3 * ctx->fs->blocksize; |
80bfaa3e TT |
198 | pb.ctx = ctx; |
199 | pb.abort = 0; | |
8394902e | 200 | pb.errcode = 0; |
80bfaa3e | 201 | pb.pctx = pctx; |
707599bf | 202 | pb.last_cluster = 0; |
7d79b40b | 203 | pb.inode = inode; |
8394902e TT |
204 | if (inode->i_links_count) { |
205 | pb.truncating = 1; | |
54434927 | 206 | pb.truncate_block = (e2_blkcnt_t) |
0bd0e593 | 207 | ((EXT2_I_SIZE(inode) + fs->blocksize - 1) / |
8394902e TT |
208 | fs->blocksize); |
209 | pb.truncate_offset = inode->i_size % fs->blocksize; | |
210 | } else { | |
211 | pb.truncating = 0; | |
212 | pb.truncate_block = 0; | |
213 | pb.truncate_offset = 0; | |
214 | } | |
215 | pb.truncated_blocks = 0; | |
6dc64392 | 216 | retval = ext2fs_block_iterate3(fs, ino, BLOCK_FLAG_DEPTH_TRAVERSE, |
8394902e | 217 | block_buf, release_inode_block, &pb); |
80bfaa3e | 218 | if (retval) { |
8394902e | 219 | com_err("release_inode_blocks", retval, |
78999ca5 | 220 | _("while calling ext2fs_block_iterate for inode %u"), |
80bfaa3e TT |
221 | ino); |
222 | return 1; | |
223 | } | |
224 | if (pb.abort) | |
225 | return 1; | |
226 | ||
8394902e | 227 | /* Refresh the inode since ext2fs_block_iterate may have changed it */ |
7d79b40b DW |
228 | e2fsck_read_inode_full(ctx, ino, EXT2_INODE(inode), sizeof(*inode), |
229 | "release_inode_blocks"); | |
8394902e TT |
230 | |
231 | if (pb.truncated_blocks) | |
7d79b40b DW |
232 | ext2fs_iblk_sub_blocks(fs, EXT2_INODE(inode), |
233 | pb.truncated_blocks); | |
8394902e | 234 | |
7d79b40b DW |
235 | blk = ext2fs_file_acl_block(fs, EXT2_INODE(inode)); |
236 | if (blk) { | |
237 | retval = ext2fs_adjust_ea_refcount3(fs, blk, block_buf, -1, | |
238 | &count, ino); | |
0684a4f3 TT |
239 | if (retval == EXT2_ET_BAD_EA_BLOCK_NUM) { |
240 | retval = 0; | |
241 | count = 1; | |
242 | } | |
243 | if (retval) { | |
244 | com_err("release_inode_blocks", retval, | |
78999ca5 | 245 | _("while calling ext2fs_adjust_ea_refcount2 for inode %u"), |
0684a4f3 TT |
246 | ino); |
247 | return 1; | |
248 | } | |
e9e96584 | 249 | if (count == 0) { |
7d79b40b DW |
250 | if (ctx->qctx) |
251 | quota_data_sub(ctx->qctx, inode, 0, | |
252 | ctx->fs->blocksize); | |
253 | ext2fs_block_alloc_stats2(fs, blk, -1); | |
e9e96584 TT |
254 | ctx->free_blocks++; |
255 | } | |
7d79b40b | 256 | ext2fs_file_acl_block_set(fs, EXT2_INODE(inode), 0); |
0684a4f3 | 257 | } |
80bfaa3e TT |
258 | return 0; |
259 | } | |
260 | ||
7d79b40b DW |
261 | /* Load all quota data in preparation for orphan clearing. */ |
262 | static errcode_t e2fsck_read_all_quotas(e2fsck_t ctx) | |
263 | { | |
264 | ext2_ino_t qf_ino; | |
265 | enum quota_type qtype; | |
266 | errcode_t retval = 0; | |
267 | ||
268 | if (!ext2fs_has_feature_quota(ctx->fs->super)) | |
269 | return retval; | |
270 | ||
271 | retval = quota_init_context(&ctx->qctx, ctx->fs, 0); | |
272 | if (retval) | |
273 | return retval; | |
274 | ||
275 | for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) { | |
276 | qf_ino = *quota_sb_inump(ctx->fs->super, qtype); | |
277 | if (qf_ino == 0) | |
278 | continue; | |
279 | ||
280 | retval = quota_update_limits(ctx->qctx, qf_ino, qtype); | |
281 | if (retval) | |
282 | break; | |
283 | } | |
284 | if (retval) | |
285 | quota_release_context(&ctx->qctx); | |
286 | return retval; | |
287 | } | |
288 | ||
289 | /* Write all the quota info to disk. */ | |
290 | static errcode_t e2fsck_write_all_quotas(e2fsck_t ctx) | |
291 | { | |
292 | struct problem_context pctx; | |
293 | enum quota_type qtype; | |
294 | ||
295 | if (!ext2fs_has_feature_quota(ctx->fs->super)) | |
296 | return 0; | |
297 | ||
298 | clear_problem_context(&pctx); | |
299 | for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) { | |
300 | pctx.num = qtype; | |
301 | pctx.errcode = quota_write_inode(ctx->qctx, 1 << qtype); | |
302 | if (pctx.errcode) { | |
303 | fix_problem(ctx, PR_6_WRITE_QUOTAS, &pctx); | |
304 | break; | |
305 | } | |
306 | } | |
307 | ||
308 | quota_release_context(&ctx->qctx); | |
309 | return pctx.errcode; | |
310 | } | |
311 | ||
80bfaa3e TT |
312 | /* |
313 | * This function releases all of the orphan inodes. It returns 1 if | |
314 | * it hit some error, and 0 on success. | |
315 | */ | |
316 | static int release_orphan_inodes(e2fsck_t ctx) | |
317 | { | |
318 | ext2_filsys fs = ctx->fs; | |
86c627ec | 319 | ext2_ino_t ino, next_ino; |
7d79b40b | 320 | struct ext2_inode_large inode; |
80bfaa3e TT |
321 | struct problem_context pctx; |
322 | char *block_buf; | |
323 | ||
324 | if ((ino = fs->super->s_last_orphan) == 0) | |
325 | return 0; | |
326 | ||
7d79b40b DW |
327 | clear_problem_context(&pctx); |
328 | pctx.errcode = e2fsck_read_all_quotas(ctx); | |
329 | if (pctx.errcode) { | |
330 | fix_problem(ctx, PR_0_QUOTA_INIT_CTX, &pctx); | |
331 | return 1; | |
332 | } | |
333 | ||
25c63ba0 TT |
334 | /* |
335 | * Win or lose, we won't be using the head of the orphan inode | |
336 | * list again. | |
337 | */ | |
338 | fs->super->s_last_orphan = 0; | |
339 | ext2fs_mark_super_dirty(fs); | |
eb4ab510 TT |
340 | |
341 | /* | |
342 | * If the filesystem contains errors, don't run the orphan | |
343 | * list, since the orphan list can't be trusted; and we're | |
344 | * going to be running a full e2fsck run anyway... | |
345 | */ | |
7d79b40b DW |
346 | if (fs->super->s_state & EXT2_ERROR_FS) { |
347 | if (ctx->qctx) | |
348 | quota_release_context(&ctx->qctx); | |
eb4ab510 | 349 | return 0; |
7d79b40b | 350 | } |
efc6f628 | 351 | |
80bfaa3e TT |
352 | if ((ino < EXT2_FIRST_INODE(fs->super)) || |
353 | (ino > fs->super->s_inodes_count)) { | |
354 | clear_problem_context(&pctx); | |
53ef44c4 | 355 | pctx.ino = ino; |
80bfaa3e | 356 | fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_HEAD_INODE, &pctx); |
7d79b40b | 357 | goto err_qctx; |
80bfaa3e TT |
358 | } |
359 | ||
8394902e | 360 | block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 4, |
9b565759 | 361 | "block iterate buffer"); |
80bfaa3e | 362 | e2fsck_read_bitmaps(ctx); |
efc6f628 | 363 | |
80bfaa3e | 364 | while (ino) { |
7d79b40b DW |
365 | e2fsck_read_inode_full(ctx, ino, EXT2_INODE(&inode), |
366 | sizeof(inode), "release_orphan_inodes"); | |
80bfaa3e | 367 | clear_problem_context(&pctx); |
ecf1b776 | 368 | pctx.ino = ino; |
7d79b40b | 369 | pctx.inode = EXT2_INODE(&inode); |
f0b8c87d TT |
370 | pctx.str = inode.i_links_count ? _("Truncating") : |
371 | _("Clearing"); | |
80bfaa3e | 372 | |
8394902e | 373 | fix_problem(ctx, PR_0_ORPHAN_CLEAR_INODE, &pctx); |
ecf1b776 | 374 | |
80bfaa3e TT |
375 | next_ino = inode.i_dtime; |
376 | if (next_ino && | |
99a2cc96 TT |
377 | ((next_ino < EXT2_FIRST_INODE(fs->super)) || |
378 | (next_ino > fs->super->s_inodes_count))) { | |
379 | pctx.ino = next_ino; | |
80bfaa3e | 380 | fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_INODE, &pctx); |
7d79b40b | 381 | goto err_buf; |
80bfaa3e TT |
382 | } |
383 | ||
8394902e | 384 | if (release_inode_blocks(ctx, ino, &inode, block_buf, &pctx)) |
7d79b40b | 385 | goto err_buf; |
ecf1b776 | 386 | |
8394902e | 387 | if (!inode.i_links_count) { |
7d79b40b DW |
388 | if (ctx->qctx) |
389 | quota_data_inodes(ctx->qctx, &inode, ino, -1); | |
0684a4f3 TT |
390 | ext2fs_inode_alloc_stats2(fs, ino, -1, |
391 | LINUX_S_ISDIR(inode.i_mode)); | |
e9e96584 | 392 | ctx->free_inodes++; |
1f3ad14a | 393 | inode.i_dtime = ctx->now; |
eb16f861 ST |
394 | } else { |
395 | inode.i_dtime = 0; | |
8394902e | 396 | } |
7d79b40b DW |
397 | e2fsck_write_inode_full(ctx, ino, EXT2_INODE(&inode), |
398 | sizeof(inode), "delete_file"); | |
80bfaa3e TT |
399 | ino = next_ino; |
400 | } | |
c4e3d3f3 | 401 | ext2fs_free_mem(&block_buf); |
7d79b40b DW |
402 | pctx.errcode = e2fsck_write_all_quotas(ctx); |
403 | if (pctx.errcode) | |
404 | goto err; | |
80bfaa3e | 405 | return 0; |
7d79b40b | 406 | err_buf: |
c4e3d3f3 | 407 | ext2fs_free_mem(&block_buf); |
7d79b40b DW |
408 | err_qctx: |
409 | if (ctx->qctx) | |
410 | quota_release_context(&ctx->qctx); | |
411 | err: | |
80bfaa3e TT |
412 | return 1; |
413 | } | |
414 | ||
c3ffaf83 TT |
415 | /* |
416 | * Check the resize inode to make sure it is sane. We check both for | |
417 | * the case where on-line resizing is not enabled (in which case the | |
418 | * resize inode should be cleared) as well as the case where on-line | |
419 | * resizing is enabled. | |
420 | */ | |
69d0edfd | 421 | void check_resize_inode(e2fsck_t ctx) |
c3ffaf83 TT |
422 | { |
423 | ext2_filsys fs = ctx->fs; | |
424 | struct ext2_inode inode; | |
425 | struct problem_context pctx; | |
642935c0 TT |
426 | int i, gdt_off, ind_off; |
427 | dgrp_t j; | |
b849f712 | 428 | blk_t blk, pblk; |
027b0577 | 429 | blk_t expect; /* for resize inode, which is 32-bit only */ |
c3ffaf83 TT |
430 | __u32 *dind_buf = 0, *ind_buf; |
431 | errcode_t retval; | |
432 | ||
433 | clear_problem_context(&pctx); | |
c3ffaf83 | 434 | |
efc6f628 TT |
435 | /* |
436 | * If the resize inode feature isn't set, then | |
ea774315 | 437 | * s_reserved_gdt_blocks must be zero. |
c3ffaf83 | 438 | */ |
86f3b6cf | 439 | if (!ext2fs_has_feature_resize_inode(fs->super)) { |
c3ffaf83 TT |
440 | if (fs->super->s_reserved_gdt_blocks) { |
441 | pctx.num = fs->super->s_reserved_gdt_blocks; | |
442 | if (fix_problem(ctx, PR_0_NONZERO_RESERVED_GDT_BLOCKS, | |
443 | &pctx)) { | |
444 | fs->super->s_reserved_gdt_blocks = 0; | |
445 | ext2fs_mark_super_dirty(fs); | |
446 | } | |
447 | } | |
ea774315 TT |
448 | } |
449 | ||
1f3ad14a | 450 | /* Read the resize inode */ |
ea774315 TT |
451 | pctx.ino = EXT2_RESIZE_INO; |
452 | retval = ext2fs_read_inode(fs, EXT2_RESIZE_INO, &inode); | |
453 | if (retval) { | |
86f3b6cf | 454 | if (ext2fs_has_feature_resize_inode(fs->super)) |
ea774315 TT |
455 | ctx->flags |= E2F_FLAG_RESIZE_INODE; |
456 | return; | |
457 | } | |
458 | ||
efc6f628 TT |
459 | /* |
460 | * If the resize inode feature isn't set, check to make sure | |
ea774315 TT |
461 | * the resize inode is cleared; then we're done. |
462 | */ | |
86f3b6cf | 463 | if (!ext2fs_has_feature_resize_inode(fs->super)) { |
c3ffaf83 TT |
464 | for (i=0; i < EXT2_N_BLOCKS; i++) { |
465 | if (inode.i_block[i]) | |
466 | break; | |
467 | } | |
468 | if ((i < EXT2_N_BLOCKS) && | |
469 | fix_problem(ctx, PR_0_CLEAR_RESIZE_INODE, &pctx)) { | |
470 | memset(&inode, 0, sizeof(inode)); | |
471 | e2fsck_write_inode(ctx, EXT2_RESIZE_INO, &inode, | |
472 | "clear_resize"); | |
473 | } | |
474 | return; | |
475 | } | |
ea774315 | 476 | |
efc6f628 | 477 | /* |
c3ffaf83 TT |
478 | * The resize inode feature is enabled; check to make sure the |
479 | * only block in use is the double indirect block | |
480 | */ | |
481 | blk = inode.i_block[EXT2_DIND_BLOCK]; | |
482 | for (i=0; i < EXT2_N_BLOCKS; i++) { | |
483 | if (i != EXT2_DIND_BLOCK && inode.i_block[i]) | |
484 | break; | |
485 | } | |
d4dc0a9e TT |
486 | if ((i < EXT2_N_BLOCKS) || !blk || !inode.i_links_count || |
487 | !(inode.i_mode & LINUX_S_IFREG) || | |
c3ffaf83 | 488 | (blk < fs->super->s_first_data_block || |
4efbac6f | 489 | blk >= ext2fs_blocks_count(fs->super))) { |
c3ffaf83 TT |
490 | resize_inode_invalid: |
491 | if (fix_problem(ctx, PR_0_RESIZE_INODE_INVALID, &pctx)) { | |
492 | memset(&inode, 0, sizeof(inode)); | |
493 | e2fsck_write_inode(ctx, EXT2_RESIZE_INO, &inode, | |
494 | "clear_resize"); | |
495 | ctx->flags |= E2F_FLAG_RESIZE_INODE; | |
496 | } | |
497 | if (!(ctx->options & E2F_OPT_READONLY)) { | |
498 | fs->super->s_state &= ~EXT2_VALID_FS; | |
499 | ext2fs_mark_super_dirty(fs); | |
500 | } | |
501 | goto cleanup; | |
502 | } | |
503 | dind_buf = (__u32 *) e2fsck_allocate_memory(ctx, fs->blocksize * 2, | |
504 | "resize dind buffer"); | |
505 | ind_buf = (__u32 *) ((char *) dind_buf + fs->blocksize); | |
506 | ||
dc8ce346 | 507 | retval = ext2fs_read_ind_block(fs, blk, dind_buf); |
c3ffaf83 TT |
508 | if (retval) |
509 | goto resize_inode_invalid; | |
510 | ||
511 | gdt_off = fs->desc_blocks; | |
512 | pblk = fs->super->s_first_data_block + 1 + fs->desc_blocks; | |
25567a7b TT |
513 | if (fs->blocksize == 1024 && fs->super->s_first_data_block == 0) |
514 | pblk++; /* Deal with 1024 blocksize bigalloc fs */ | |
efc6f628 | 515 | for (i = 0; i < fs->super->s_reserved_gdt_blocks / 4; |
c3ffaf83 TT |
516 | i++, gdt_off++, pblk++) { |
517 | gdt_off %= fs->blocksize/4; | |
518 | if (dind_buf[gdt_off] != pblk) | |
519 | goto resize_inode_invalid; | |
dc8ce346 | 520 | retval = ext2fs_read_ind_block(fs, pblk, ind_buf); |
efc6f628 | 521 | if (retval) |
c3ffaf83 TT |
522 | goto resize_inode_invalid; |
523 | ind_off = 0; | |
524 | for (j = 1; j < fs->group_desc_count; j++) { | |
525 | if (!ext2fs_bg_has_super(fs, j)) | |
526 | continue; | |
1e33a8b4 | 527 | expect = pblk + EXT2_GROUPS_TO_BLOCKS(fs->super, j); |
c3ffaf83 TT |
528 | if (ind_buf[ind_off] != expect) |
529 | goto resize_inode_invalid; | |
530 | ind_off++; | |
531 | } | |
532 | } | |
533 | ||
534 | cleanup: | |
535 | if (dind_buf) | |
536 | ext2fs_free_mem(&dind_buf); | |
537 | ||
538 | } | |
80bfaa3e | 539 | |
f77704e4 TT |
540 | /* |
541 | * This function checks the dirhash signed/unsigned hint if necessary. | |
542 | */ | |
642935c0 | 543 | static void e2fsck_fix_dirhash_hint(e2fsck_t ctx) |
f77704e4 TT |
544 | { |
545 | struct ext2_super_block *sb = ctx->fs->super; | |
546 | struct problem_context pctx; | |
f77704e4 TT |
547 | char c; |
548 | ||
549 | if ((ctx->options & E2F_OPT_READONLY) || | |
86f3b6cf | 550 | !ext2fs_has_feature_dir_index(sb) || |
f77704e4 TT |
551 | (sb->s_flags & (EXT2_FLAGS_SIGNED_HASH|EXT2_FLAGS_UNSIGNED_HASH))) |
552 | return; | |
553 | ||
554 | c = (char) 255; | |
555 | ||
556 | clear_problem_context(&pctx); | |
557 | if (fix_problem(ctx, PR_0_DIRHASH_HINT, &pctx)) { | |
558 | if (((int) c) == -1) { | |
559 | sb->s_flags |= EXT2_FLAGS_SIGNED_HASH; | |
560 | } else { | |
561 | sb->s_flags |= EXT2_FLAGS_UNSIGNED_HASH; | |
562 | } | |
563 | ext2fs_mark_super_dirty(ctx->fs); | |
564 | } | |
565 | } | |
566 | ||
567 | ||
1b6bf175 TT |
568 | void check_super_block(e2fsck_t ctx) |
569 | { | |
570 | ext2_filsys fs = ctx->fs; | |
6dc64392 | 571 | blk64_t first_block, last_block; |
5dd8f963 | 572 | struct ext2_super_block *sb = fs->super; |
68477355 | 573 | unsigned int ipg_max; |
26ea4899 | 574 | problem_t problem; |
6dc64392 | 575 | blk64_t blocks_per_group = fs->super->s_blocks_per_group; |
44fe08f1 | 576 | __u32 bpg_max, cpg_max; |
32cb8473 | 577 | __u64 blks_max; |
78cf0547 | 578 | int inodes_per_block; |
89db86d3 | 579 | int inode_size; |
ba5131f6 | 580 | int accept_time_fudge; |
177839e2 | 581 | int broken_system_clock; |
7f813ba3 | 582 | dgrp_t i; |
6dc64392 | 583 | blk64_t should_be; |
1b6bf175 | 584 | struct problem_context pctx; |
6dc64392 | 585 | blk64_t free_blocks = 0; |
5d38ef1d | 586 | ino_t free_inodes = 0; |
80875db5 | 587 | int csum_flag, clear_test_fs_flag; |
b21bf267 AD |
588 | |
589 | inodes_per_block = EXT2_INODES_PER_BLOCK(fs->super); | |
590 | ipg_max = inodes_per_block * (blocks_per_group - 4); | |
591 | if (ipg_max > EXT2_MAX_INODES_PER_GROUP(sb)) | |
592 | ipg_max = EXT2_MAX_INODES_PER_GROUP(sb); | |
44fe08f1 TT |
593 | cpg_max = 8 * EXT2_BLOCK_SIZE(sb); |
594 | if (cpg_max > EXT2_MAX_CLUSTERS_PER_GROUP(sb)) | |
595 | cpg_max = EXT2_MAX_CLUSTERS_PER_GROUP(sb); | |
596 | bpg_max = 8 * EXT2_BLOCK_SIZE(sb) * EXT2FS_CLUSTER_RATIO(fs); | |
b21bf267 AD |
597 | if (bpg_max > EXT2_MAX_BLOCKS_PER_GROUP(sb)) |
598 | bpg_max = EXT2_MAX_BLOCKS_PER_GROUP(sb); | |
1b6bf175 | 599 | |
54dc7ca2 | 600 | ctx->invalid_inode_bitmap_flag = (int *) e2fsck_allocate_memory(ctx, |
f8188fff | 601 | sizeof(int) * fs->group_desc_count, "invalid_inode_bitmap"); |
54dc7ca2 | 602 | ctx->invalid_block_bitmap_flag = (int *) e2fsck_allocate_memory(ctx, |
f8188fff | 603 | sizeof(int) * fs->group_desc_count, "invalid_block_bitmap"); |
54dc7ca2 | 604 | ctx->invalid_inode_table_flag = (int *) e2fsck_allocate_memory(ctx, |
f8188fff | 605 | sizeof(int) * fs->group_desc_count, "invalid_inode_table"); |
b21bf267 | 606 | |
32cb8473 TT |
607 | blks_max = (1ULL << 32) * EXT2_MAX_BLOCKS_PER_GROUP(fs->super); |
608 | if (ext2fs_has_feature_64bit(fs->super)) { | |
609 | if (blks_max > ((1ULL << 48) - 1)) | |
610 | blks_max = (1ULL << 48) - 1; | |
611 | } else { | |
612 | if (blks_max > ((1ULL << 32) - 1)) | |
613 | blks_max = (1ULL << 32) - 1; | |
614 | } | |
615 | ||
1b6bf175 TT |
616 | clear_problem_context(&pctx); |
617 | ||
618 | /* | |
619 | * Verify the super block constants... | |
620 | */ | |
5dd8f963 | 621 | check_super_value(ctx, "inodes_count", sb->s_inodes_count, |
1b6bf175 | 622 | MIN_CHECK, 1, 0); |
32cb8473 TT |
623 | check_super_value64(ctx, "blocks_count", ext2fs_blocks_count(sb), |
624 | MIN_CHECK | MAX_CHECK, 1, blks_max); | |
5dd8f963 | 625 | check_super_value(ctx, "first_data_block", sb->s_first_data_block, |
4efbac6f | 626 | MAX_CHECK, 0, ext2fs_blocks_count(sb)); |
5dd8f963 | 627 | check_super_value(ctx, "log_block_size", sb->s_log_block_size, |
31e29a12 TT |
628 | MIN_CHECK | MAX_CHECK, 0, |
629 | EXT2_MAX_BLOCK_LOG_SIZE - EXT2_MIN_BLOCK_LOG_SIZE); | |
412376ef TT |
630 | check_super_value(ctx, "log_cluster_size", |
631 | sb->s_log_cluster_size, | |
632 | MIN_CHECK | MAX_CHECK, sb->s_log_block_size, | |
633 | (EXT2_MAX_CLUSTER_LOG_SIZE - | |
634 | EXT2_MIN_CLUSTER_LOG_SIZE)); | |
635 | check_super_value(ctx, "clusters_per_group", sb->s_clusters_per_group, | |
44fe08f1 | 636 | MIN_CHECK | MAX_CHECK, 8, cpg_max); |
5dd8f963 | 637 | check_super_value(ctx, "blocks_per_group", sb->s_blocks_per_group, |
b21bf267 | 638 | MIN_CHECK | MAX_CHECK, 8, bpg_max); |
5dd8f963 | 639 | check_super_value(ctx, "inodes_per_group", sb->s_inodes_per_group, |
b21bf267 | 640 | MIN_CHECK | MAX_CHECK, inodes_per_block, ipg_max); |
4efbac6f VAH |
641 | check_super_value(ctx, "r_blocks_count", ext2fs_r_blocks_count(sb), |
642 | MAX_CHECK, 0, ext2fs_blocks_count(sb) / 2); | |
efc6f628 | 643 | check_super_value(ctx, "reserved_gdt_blocks", |
c3ffaf83 | 644 | sb->s_reserved_gdt_blocks, MAX_CHECK, 0, |
11d1116a AD |
645 | fs->blocksize / sizeof(__u32)); |
646 | check_super_value(ctx, "desc_size", | |
647 | sb->s_desc_size, MAX_CHECK | LOG2_CHECK, 0, | |
648 | EXT2_MAX_DESC_SIZE); | |
1f790a7c TT |
649 | if (sb->s_rev_level > EXT2_GOOD_OLD_REV) |
650 | check_super_value(ctx, "first_ino", sb->s_first_ino, | |
651 | MIN_CHECK | MAX_CHECK, | |
652 | EXT2_GOOD_OLD_FIRST_INO, sb->s_inodes_count); | |
89db86d3 TT |
653 | inode_size = EXT2_INODE_SIZE(sb); |
654 | check_super_value(ctx, "inode_size", | |
11d1116a | 655 | inode_size, MIN_CHECK | MAX_CHECK | LOG2_CHECK, |
89db86d3 | 656 | EXT2_GOOD_OLD_INODE_SIZE, fs->blocksize); |
44fe08f1 TT |
657 | if (sb->s_blocks_per_group != (sb->s_clusters_per_group * |
658 | EXT2FS_CLUSTER_RATIO(fs))) { | |
659 | pctx.num = sb->s_clusters_per_group * EXT2FS_CLUSTER_RATIO(fs); | |
660 | pctx.str = "block_size"; | |
661 | fix_problem(ctx, PR_0_MISC_CORRUPT_SUPER, &pctx); | |
662 | ctx->flags |= E2F_FLAG_ABORT; /* never get here! */ | |
663 | return; | |
664 | } | |
efc6f628 | 665 | |
d2af1bdd | 666 | if ((ctx->flags & E2F_FLAG_GOT_DEVSIZE) && |
4efbac6f VAH |
667 | (ctx->num_blocks < ext2fs_blocks_count(sb))) { |
668 | pctx.blk = ext2fs_blocks_count(sb); | |
d2af1bdd TT |
669 | pctx.blk2 = ctx->num_blocks; |
670 | if (fix_problem(ctx, PR_0_FS_SIZE_WRONG, &pctx)) { | |
08b21301 TT |
671 | ctx->flags |= E2F_FLAG_ABORT; |
672 | return; | |
673 | } | |
1b6bf175 TT |
674 | } |
675 | ||
25567a7b TT |
676 | should_be = (sb->s_log_block_size == 0 && |
677 | EXT2FS_CLUSTER_RATIO(fs) == 1) ? 1 : 0; | |
5dd8f963 TT |
678 | if (sb->s_first_data_block != should_be) { |
679 | pctx.blk = sb->s_first_data_block; | |
1b6bf175 TT |
680 | pctx.blk2 = should_be; |
681 | fix_problem(ctx, PR_0_FIRST_DATA_BLOCK, &pctx); | |
08b21301 TT |
682 | ctx->flags |= E2F_FLAG_ABORT; |
683 | return; | |
1b6bf175 TT |
684 | } |
685 | ||
ec3a42b1 DW |
686 | should_be = (blk64_t)sb->s_inodes_per_group * fs->group_desc_count; |
687 | if (should_be > UINT_MAX) | |
688 | should_be = UINT_MAX; | |
5dd8f963 TT |
689 | if (sb->s_inodes_count != should_be) { |
690 | pctx.ino = sb->s_inodes_count; | |
d4b0ce03 TT |
691 | pctx.ino2 = should_be; |
692 | if (fix_problem(ctx, PR_0_INODE_COUNT_WRONG, &pctx)) { | |
5dd8f963 | 693 | sb->s_inodes_count = should_be; |
d4b0ce03 TT |
694 | ext2fs_mark_super_dirty(fs); |
695 | } | |
696 | } | |
047d5d77 TT |
697 | if (EXT2_INODE_SIZE(sb) > EXT2_GOOD_OLD_INODE_SIZE) { |
698 | unsigned min = | |
699 | sizeof(((struct ext2_inode_large *) 0)->i_extra_isize) + | |
700 | sizeof(((struct ext2_inode_large *) 0)->i_checksum_hi); | |
701 | unsigned max = EXT2_INODE_SIZE(sb) - EXT2_GOOD_OLD_INODE_SIZE; | |
702 | pctx.num = sb->s_min_extra_isize; | |
703 | if (sb->s_min_extra_isize && | |
704 | (sb->s_min_extra_isize < min || | |
705 | sb->s_min_extra_isize > max || | |
706 | sb->s_min_extra_isize & 3) && | |
707 | fix_problem(ctx, PR_0_BAD_MIN_EXTRA_ISIZE, &pctx)) { | |
708 | sb->s_min_extra_isize = | |
709 | (sizeof(struct ext2_inode_large) - | |
710 | EXT2_GOOD_OLD_INODE_SIZE); | |
711 | ext2fs_mark_super_dirty(fs); | |
712 | } | |
713 | pctx.num = sb->s_want_extra_isize; | |
714 | if (sb->s_want_extra_isize && | |
715 | (sb->s_want_extra_isize < min || | |
716 | sb->s_want_extra_isize > max || | |
717 | sb->s_want_extra_isize & 3) && | |
718 | fix_problem(ctx, PR_0_BAD_WANT_EXTRA_ISIZE, &pctx)) { | |
719 | sb->s_want_extra_isize = | |
720 | (sizeof(struct ext2_inode_large) - | |
721 | EXT2_GOOD_OLD_INODE_SIZE); | |
722 | ext2fs_mark_super_dirty(fs); | |
723 | } | |
724 | } | |
725 | ||
387e6384 | 726 | /* Are metadata_csum and uninit_bg both set? */ |
86f3b6cf DW |
727 | if (ext2fs_has_feature_metadata_csum(fs->super) && |
728 | ext2fs_has_feature_gdt_csum(fs->super) && | |
387e6384 | 729 | fix_problem(ctx, PR_0_META_AND_GDT_CSUM_SET, &pctx)) { |
86f3b6cf | 730 | ext2fs_clear_feature_gdt_csum(fs->super); |
387e6384 DW |
731 | ext2fs_mark_super_dirty(fs); |
732 | for (i = 0; i < fs->group_desc_count; i++) | |
733 | ext2fs_group_desc_csum_set(fs, i); | |
734 | } | |
735 | ||
17f2fbf7 DW |
736 | /* We can't have ^metadata_csum,metadata_csum_seed */ |
737 | if (!ext2fs_has_feature_metadata_csum(fs->super) && | |
738 | ext2fs_has_feature_csum_seed(fs->super) && | |
739 | fix_problem(ctx, PR_0_CSUM_SEED_WITHOUT_META_CSUM, &pctx)) { | |
740 | ext2fs_clear_feature_csum_seed(fs->super); | |
741 | fs->super->s_checksum_seed = 0; | |
742 | ext2fs_mark_super_dirty(fs); | |
743 | } | |
744 | ||
27b2297d | 745 | /* Is 64bit set and extents unset? */ |
86f3b6cf DW |
746 | if (ext2fs_has_feature_64bit(fs->super) && |
747 | !ext2fs_has_feature_extents(fs->super) && | |
27b2297d | 748 | fix_problem(ctx, PR_0_64BIT_WITHOUT_EXTENTS, &pctx)) { |
86f3b6cf | 749 | ext2fs_set_feature_extents(fs->super); |
27b2297d DW |
750 | ext2fs_mark_super_dirty(fs); |
751 | } | |
752 | ||
e228d700 DW |
753 | /* Did user ask us to convert files to extents? */ |
754 | if (ctx->options & E2F_OPT_CONVERT_BMAP) { | |
86f3b6cf | 755 | ext2fs_set_feature_extents(fs->super); |
e228d700 DW |
756 | ext2fs_mark_super_dirty(fs); |
757 | } | |
758 | ||
86f3b6cf | 759 | if (ext2fs_has_feature_meta_bg(fs->super) && |
7a4352dc TT |
760 | (fs->super->s_first_meta_bg > fs->desc_blocks)) { |
761 | pctx.group = fs->desc_blocks; | |
762 | pctx.num = fs->super->s_first_meta_bg; | |
763 | if (fix_problem(ctx, PR_0_FIRST_META_BG_TOO_BIG, &pctx)) { | |
86f3b6cf | 764 | ext2fs_clear_feature_meta_bg(fs->super); |
7a4352dc TT |
765 | fs->super->s_first_meta_bg = 0; |
766 | ext2fs_mark_super_dirty(fs); | |
767 | } | |
768 | } | |
769 | ||
1b6bf175 TT |
770 | /* |
771 | * Verify the group descriptors.... | |
772 | */ | |
88b34b1f | 773 | first_block = sb->s_first_data_block; |
4efbac6f | 774 | last_block = ext2fs_blocks_count(sb)-1; |
1b6bf175 | 775 | |
387e6384 | 776 | csum_flag = ext2fs_has_group_desc_csum(fs); |
d7cca6b0 | 777 | for (i = 0; i < fs->group_desc_count; i++) { |
1b6bf175 | 778 | pctx.group = i; |
abf23439 | 779 | |
86f3b6cf | 780 | if (!ext2fs_has_feature_flex_bg(fs->super)) { |
b49f78fe TT |
781 | first_block = ext2fs_group_first_block2(fs, i); |
782 | last_block = ext2fs_group_last_block2(fs, i); | |
88b34b1f | 783 | } |
bb1a46a4 | 784 | |
d7cca6b0 VAH |
785 | if ((ext2fs_block_bitmap_loc(fs, i) < first_block) || |
786 | (ext2fs_block_bitmap_loc(fs, i) > last_block)) { | |
787 | pctx.blk = ext2fs_block_bitmap_loc(fs, i); | |
24bfb443 | 788 | if (fix_problem(ctx, PR_0_BB_NOT_GROUP, &pctx)) |
d7cca6b0 | 789 | ext2fs_block_bitmap_loc_set(fs, i, 0); |
24bfb443 | 790 | } |
d7cca6b0 | 791 | if (ext2fs_block_bitmap_loc(fs, i) == 0) { |
24bfb443 TT |
792 | ctx->invalid_block_bitmap_flag[i]++; |
793 | ctx->invalid_bitmaps++; | |
1b6bf175 | 794 | } |
d7cca6b0 VAH |
795 | if ((ext2fs_inode_bitmap_loc(fs, i) < first_block) || |
796 | (ext2fs_inode_bitmap_loc(fs, i) > last_block)) { | |
797 | pctx.blk = ext2fs_inode_bitmap_loc(fs, i); | |
24bfb443 | 798 | if (fix_problem(ctx, PR_0_IB_NOT_GROUP, &pctx)) |
d7cca6b0 | 799 | ext2fs_inode_bitmap_loc_set(fs, i, 0); |
24bfb443 | 800 | } |
d7cca6b0 | 801 | if (ext2fs_inode_bitmap_loc(fs, i) == 0) { |
24bfb443 TT |
802 | ctx->invalid_inode_bitmap_flag[i]++; |
803 | ctx->invalid_bitmaps++; | |
1b6bf175 | 804 | } |
d7cca6b0 VAH |
805 | if ((ext2fs_inode_table_loc(fs, i) < first_block) || |
806 | ((ext2fs_inode_table_loc(fs, i) + | |
bb1a46a4 | 807 | fs->inode_blocks_per_group - 1) > last_block)) { |
d7cca6b0 | 808 | pctx.blk = ext2fs_inode_table_loc(fs, i); |
24bfb443 | 809 | if (fix_problem(ctx, PR_0_ITABLE_NOT_GROUP, &pctx)) |
d7cca6b0 | 810 | ext2fs_inode_table_loc_set(fs, i, 0); |
24bfb443 | 811 | } |
d7cca6b0 | 812 | if (ext2fs_inode_table_loc(fs, i) == 0) { |
24bfb443 TT |
813 | ctx->invalid_inode_table_flag[i]++; |
814 | ctx->invalid_bitmaps++; | |
1b6bf175 | 815 | } |
d7cca6b0 VAH |
816 | free_blocks += ext2fs_bg_free_blocks_count(fs, i); |
817 | free_inodes += ext2fs_bg_free_inodes_count(fs, i); | |
550a4afa | 818 | |
d7cca6b0 VAH |
819 | if ((ext2fs_bg_free_blocks_count(fs, i) > sb->s_blocks_per_group) || |
820 | (ext2fs_bg_free_inodes_count(fs, i) > sb->s_inodes_per_group) || | |
821 | (ext2fs_bg_used_dirs_count(fs, i) > sb->s_inodes_per_group)) | |
550a4afa TT |
822 | ext2fs_unmark_valid(fs); |
823 | ||
0d5439c8 | 824 | should_be = 0; |
49a7360b | 825 | if (!ext2fs_group_desc_csum_verify(fs, i)) { |
b9a64a51 TT |
826 | pctx.csum1 = ext2fs_bg_checksum(fs, i); |
827 | pctx.csum2 = ext2fs_group_desc_csum(fs, i); | |
49a7360b | 828 | if (fix_problem(ctx, PR_0_GDT_CSUM, &pctx)) { |
e633b58a ES |
829 | ext2fs_bg_flags_clear(fs, i, EXT2_BG_BLOCK_UNINIT); |
830 | ext2fs_bg_flags_clear(fs, i, EXT2_BG_INODE_UNINIT); | |
d7cca6b0 | 831 | ext2fs_bg_itable_unused_set(fs, i, 0); |
0d5439c8 | 832 | should_be = 1; |
49a7360b JS |
833 | } |
834 | ext2fs_unmark_valid(fs); | |
835 | } | |
836 | ||
16b851cd | 837 | if (!csum_flag && |
cd65a24e TT |
838 | (ext2fs_bg_flags_test(fs, i, EXT2_BG_BLOCK_UNINIT) || |
839 | ext2fs_bg_flags_test(fs, i, EXT2_BG_INODE_UNINIT) || | |
d7cca6b0 | 840 | ext2fs_bg_itable_unused(fs, i) != 0)) { |
49a7360b | 841 | if (fix_problem(ctx, PR_0_GDT_UNINIT, &pctx)) { |
e633b58a ES |
842 | ext2fs_bg_flags_clear(fs, i, EXT2_BG_BLOCK_UNINIT); |
843 | ext2fs_bg_flags_clear(fs, i, EXT2_BG_INODE_UNINIT); | |
d7cca6b0 | 844 | ext2fs_bg_itable_unused_set(fs, i, 0); |
0d5439c8 | 845 | should_be = 1; |
49a7360b JS |
846 | } |
847 | ext2fs_unmark_valid(fs); | |
848 | } | |
0d5439c8 AD |
849 | |
850 | if (i == fs->group_desc_count - 1 && | |
cd65a24e | 851 | ext2fs_bg_flags_test(fs, i, EXT2_BG_BLOCK_UNINIT)) { |
0d5439c8 | 852 | if (fix_problem(ctx, PR_0_BB_UNINIT_LAST, &pctx)) { |
e633b58a | 853 | ext2fs_bg_flags_clear(fs, i, EXT2_BG_BLOCK_UNINIT); |
0d5439c8 AD |
854 | should_be = 1; |
855 | } | |
856 | ext2fs_unmark_valid(fs); | |
857 | } | |
858 | ||
49a7360b | 859 | if (csum_flag && |
d7cca6b0 VAH |
860 | (ext2fs_bg_itable_unused(fs, i) > ext2fs_bg_free_inodes_count(fs, i) || |
861 | ext2fs_bg_itable_unused(fs, i) > sb->s_inodes_per_group)) { | |
862 | pctx.blk = ext2fs_bg_itable_unused(fs, i); | |
0d5439c8 | 863 | if (fix_problem(ctx, PR_0_GDT_ITABLE_UNUSED, &pctx)) { |
d7cca6b0 | 864 | ext2fs_bg_itable_unused_set(fs, i, 0); |
0d5439c8 AD |
865 | should_be = 1; |
866 | } | |
49a7360b JS |
867 | ext2fs_unmark_valid(fs); |
868 | } | |
0d5439c8 AD |
869 | |
870 | if (should_be) | |
871 | ext2fs_group_desc_csum_set(fs, i); | |
bee24f36 VAH |
872 | /* If the user aborts e2fsck by typing ^C, stop right away */ |
873 | if (ctx->flags & E2F_FLAG_SIGNAL_MASK) | |
874 | return; | |
1b6bf175 | 875 | } |
550a4afa | 876 | |
fe75afbf | 877 | ctx->free_blocks = EXT2FS_C2B(fs, free_blocks); |
a3efe484 | 878 | ctx->free_inodes = free_inodes; |
efc6f628 | 879 | |
4efbac6f | 880 | if ((ext2fs_free_blocks_count(sb) > ext2fs_blocks_count(sb)) || |
550a4afa TT |
881 | (sb->s_free_inodes_count > sb->s_inodes_count)) |
882 | ext2fs_unmark_valid(fs); | |
883 | ||
884 | ||
1b6bf175 TT |
885 | /* |
886 | * If we have invalid bitmaps, set the error state of the | |
887 | * filesystem. | |
888 | */ | |
889 | if (ctx->invalid_bitmaps && !(ctx->options & E2F_OPT_READONLY)) { | |
550a4afa | 890 | sb->s_state &= ~EXT2_VALID_FS; |
1b6bf175 TT |
891 | ext2fs_mark_super_dirty(fs); |
892 | } | |
893 | ||
4ea0a110 | 894 | clear_problem_context(&pctx); |
efc6f628 | 895 | |
54be2ccc | 896 | #ifndef EXT2_SKIP_UUID |
1b6bf175 TT |
897 | /* |
898 | * If the UUID field isn't assigned, assign it. | |
c22f3284 MM |
899 | * Skip if checksums are enabled and the filesystem is mounted, |
900 | * if the id changes under the kernel remounting rw may fail. | |
1b6bf175 | 901 | */ |
c22f3284 | 902 | if (!(ctx->options & E2F_OPT_READONLY) && uuid_is_null(sb->s_uuid) && |
24b8916a | 903 | !ext2fs_has_feature_metadata_csum(ctx->fs->super) && |
c22f3284 | 904 | (!csum_flag || !(ctx->mount_flags & EXT2_MF_MOUNTED))) { |
1b6bf175 | 905 | if (fix_problem(ctx, PR_0_ADD_UUID, &pctx)) { |
5dd8f963 | 906 | uuid_generate(sb->s_uuid); |
4ffbe3af | 907 | ext2fs_init_csum_seed(fs); |
86db36ab | 908 | fs->flags |= EXT2_FLAG_DIRTY; |
299d7424 | 909 | fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; |
1b6bf175 TT |
910 | } |
911 | } | |
54be2ccc | 912 | #endif |
2a77a784 | 913 | |
80875db5 TT |
914 | /* |
915 | * Check to see if we should disable the test_fs flag | |
916 | */ | |
917 | profile_get_boolean(ctx->profile, "options", | |
918 | "clear_test_fs_flag", 0, 1, | |
919 | &clear_test_fs_flag); | |
920 | if (!(ctx->options & E2F_OPT_READONLY) && | |
921 | clear_test_fs_flag && | |
922 | (fs->super->s_flags & EXT2_FLAGS_TEST_FILESYS) && | |
923 | (fs_proc_check("ext4") || check_for_modules("ext4"))) { | |
924 | if (fix_problem(ctx, PR_0_CLEAR_TESTFS_FLAG, &pctx)) { | |
925 | fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS; | |
86db36ab | 926 | fs->flags |= EXT2_FLAG_DIRTY; |
80875db5 TT |
927 | fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; |
928 | } | |
929 | } | |
930 | ||
4ea0a110 TT |
931 | /* |
932 | * For the Hurd, check to see if the filetype option is set, | |
933 | * since it doesn't support it. | |
934 | */ | |
80bfaa3e TT |
935 | if (!(ctx->options & E2F_OPT_READONLY) && |
936 | fs->super->s_creator_os == EXT2_OS_HURD && | |
86f3b6cf | 937 | ext2fs_has_feature_filetype(fs->super)) { |
4ea0a110 | 938 | if (fix_problem(ctx, PR_0_HURD_CLEAR_FILETYPE, &pctx)) { |
86f3b6cf | 939 | ext2fs_clear_feature_filetype(fs->super); |
4ea0a110 | 940 | ext2fs_mark_super_dirty(fs); |
0cfce7f7 | 941 | fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; |
4ea0a110 TT |
942 | } |
943 | } | |
80bfaa3e | 944 | |
7b59f1ef TT |
945 | /* |
946 | * If we have any of the compatibility flags set, we need to have a | |
947 | * revision 1 filesystem. Most kernels will not check the flags on | |
948 | * a rev 0 filesystem and we may have corruption issues because of | |
949 | * the incompatible changes to the filesystem. | |
950 | */ | |
951 | if (!(ctx->options & E2F_OPT_READONLY) && | |
952 | fs->super->s_rev_level == EXT2_GOOD_OLD_REV && | |
953 | (fs->super->s_feature_compat || | |
954 | fs->super->s_feature_ro_compat || | |
955 | fs->super->s_feature_incompat) && | |
956 | fix_problem(ctx, PR_0_FS_REV_LEVEL, &pctx)) { | |
a917d1cc | 957 | ext2fs_update_dynamic_rev(fs); |
7b59f1ef | 958 | ext2fs_mark_super_dirty(fs); |
0cfce7f7 | 959 | fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; |
7b59f1ef TT |
960 | } |
961 | ||
80bfaa3e TT |
962 | /* |
963 | * Clean up any orphan inodes, if present. | |
964 | */ | |
965 | if (!(ctx->options & E2F_OPT_READONLY) && release_orphan_inodes(ctx)) { | |
966 | fs->super->s_state &= ~EXT2_VALID_FS; | |
7b59f1ef | 967 | ext2fs_mark_super_dirty(fs); |
80bfaa3e TT |
968 | } |
969 | ||
60702c26 | 970 | /* |
ba5131f6 TT |
971 | * Unfortunately, due to Windows' unfortunate design decision |
972 | * to configure the hardware clock to tick localtime, instead | |
973 | * of the more proper and less error-prone UTC time, many | |
974 | * users end up in the situation where the system clock is | |
975 | * incorrectly set at the time when e2fsck is run. | |
976 | * | |
977 | * Historically this was usually due to some distributions | |
978 | * having buggy init scripts and/or installers that didn't | |
979 | * correctly detect this case and take appropriate | |
980 | * countermeasures. However, it's still possible, despite the | |
981 | * best efforts of init script and installer authors to not be | |
982 | * able to detect this misconfiguration, usually due to a | |
983 | * buggy or misconfigured virtualization manager or the | |
984 | * installer not having access to a network time server during | |
985 | * the installation process. So by default, we allow the | |
986 | * superblock times to be fudged by up to 24 hours. This can | |
987 | * be disabled by setting options.accept_time_fudge to the | |
988 | * boolean value of false in e2fsck.conf. We also support | |
989 | * options.buggy_init_scripts for backwards compatibility. | |
60702c26 | 990 | */ |
ba5131f6 TT |
991 | profile_get_boolean(ctx->profile, "options", "accept_time_fudge", |
992 | 0, 1, &accept_time_fudge); | |
60702c26 | 993 | profile_get_boolean(ctx->profile, "options", "buggy_init_scripts", |
ba5131f6 TT |
994 | 0, accept_time_fudge, &accept_time_fudge); |
995 | ctx->time_fudge = accept_time_fudge ? 86400 : 0; | |
60702c26 | 996 | |
177839e2 TT |
997 | profile_get_boolean(ctx->profile, "options", "broken_system_clock", |
998 | 0, 0, &broken_system_clock); | |
999 | ||
efc6f628 | 1000 | /* |
8dceb924 TT |
1001 | * Check to see if the superblock last mount time or last |
1002 | * write time is in the future. | |
1003 | */ | |
177839e2 TT |
1004 | if (!broken_system_clock && |
1005 | !(ctx->flags & E2F_FLAG_TIME_INSANE) && | |
1006 | fs->super->s_mtime > (__u32) ctx->now) { | |
8dceb924 | 1007 | pctx.num = fs->super->s_mtime; |
26ea4899 TT |
1008 | problem = PR_0_FUTURE_SB_LAST_MOUNT; |
1009 | if (fs->super->s_mtime <= (__u32) ctx->now + ctx->time_fudge) | |
1010 | problem = PR_0_FUTURE_SB_LAST_MOUNT_FUDGED; | |
1011 | if (fix_problem(ctx, problem, &pctx)) { | |
8dceb924 | 1012 | fs->super->s_mtime = ctx->now; |
86db36ab | 1013 | fs->flags |= EXT2_FLAG_DIRTY; |
8dceb924 TT |
1014 | } |
1015 | } | |
177839e2 TT |
1016 | if (!broken_system_clock && |
1017 | !(ctx->flags & E2F_FLAG_TIME_INSANE) && | |
1018 | fs->super->s_wtime > (__u32) ctx->now) { | |
8dceb924 | 1019 | pctx.num = fs->super->s_wtime; |
fe26a55a | 1020 | problem = PR_0_FUTURE_SB_LAST_WRITE; |
26ea4899 | 1021 | if (fs->super->s_wtime <= (__u32) ctx->now + ctx->time_fudge) |
61a9d2b3 | 1022 | problem = PR_0_FUTURE_SB_LAST_WRITE_FUDGED; |
26ea4899 | 1023 | if (fix_problem(ctx, problem, &pctx)) { |
8dceb924 | 1024 | fs->super->s_wtime = ctx->now; |
86db36ab | 1025 | fs->flags |= EXT2_FLAG_DIRTY; |
8dceb924 TT |
1026 | } |
1027 | } | |
1028 | ||
d202f46d TT |
1029 | e2fsck_validate_quota_inodes(ctx); |
1030 | ||
773fd8a1 TT |
1031 | /* |
1032 | * Move the ext3 journal file, if necessary. | |
1033 | */ | |
1034 | e2fsck_move_ext3_journal(ctx); | |
b1c52b26 TT |
1035 | |
1036 | /* | |
1037 | * Fix journal hint, if necessary | |
1038 | */ | |
1039 | e2fsck_fix_ext3_journal_hint(ctx); | |
1040 | ||
f77704e4 TT |
1041 | /* |
1042 | * Add dirhash hint if necessary | |
1043 | */ | |
1044 | e2fsck_fix_dirhash_hint(ctx); | |
1045 | ||
624e4a64 AK |
1046 | /* |
1047 | * Hide quota inodes if necessary. | |
1048 | */ | |
1049 | e2fsck_hide_quota(ctx); | |
1050 | ||
1b6bf175 TT |
1051 | return; |
1052 | } | |
0c37f456 TT |
1053 | |
1054 | /* | |
1055 | * Check to see if we should backup the master sb to the backup super | |
a8cde73a | 1056 | * blocks. Returns non-zero if the sb should be backed up. |
0c37f456 | 1057 | */ |
a8cde73a TT |
1058 | |
1059 | /* | |
1060 | * A few flags are set on the fly by the kernel, but only in the | |
1061 | * primary superblock. This is actually a bad thing, and we should | |
1062 | * try to discourage it in the future. In particular, for the newer | |
1063 | * ext4 files, especially EXT4_FEATURE_RO_COMPAT_DIR_NLINK and | |
1064 | * EXT3_FEATURE_INCOMPAT_EXTENTS. So some of these may go away in the | |
d9ff474b ES |
1065 | * future. EXT3_FEATURE_INCOMPAT_RECOVER may also get set when |
1066 | * copying the primary superblock during online resize. | |
a8cde73a TT |
1067 | * |
1068 | * The kernel will set EXT2_FEATURE_COMPAT_EXT_ATTR, but | |
1069 | * unfortunately, we shouldn't ignore it since if it's not set in the | |
1070 | * backup, the extended attributes in the filesystem will be stripped | |
1071 | * away. | |
1072 | */ | |
1073 | #define FEATURE_RO_COMPAT_IGNORE (EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \ | |
1074 | EXT4_FEATURE_RO_COMPAT_DIR_NLINK) | |
d9ff474b ES |
1075 | #define FEATURE_INCOMPAT_IGNORE (EXT3_FEATURE_INCOMPAT_EXTENTS| \ |
1076 | EXT3_FEATURE_INCOMPAT_RECOVER) | |
a8cde73a | 1077 | |
0c37f456 TT |
1078 | int check_backup_super_block(e2fsck_t ctx) |
1079 | { | |
1080 | ext2_filsys fs = ctx->fs; | |
0c37f456 TT |
1081 | errcode_t retval; |
1082 | dgrp_t g; | |
6dc64392 | 1083 | blk64_t sb; |
0c37f456 | 1084 | int ret = 0; |
982dd30c TT |
1085 | char buf[SUPERBLOCK_SIZE]; |
1086 | struct ext2_super_block *backup_sb; | |
0c37f456 TT |
1087 | |
1088 | /* | |
1089 | * If we are already writing out the backup blocks, then we | |
1090 | * don't need to test. Also, if the filesystem is invalid, or | |
1091 | * the check was aborted or cancelled, we also don't want to | |
1092 | * do the backup. If the filesystem was opened read-only then | |
1093 | * we can't do the backup. | |
1094 | */ | |
1095 | if (((fs->flags & EXT2_FLAG_MASTER_SB_ONLY) == 0) || | |
1096 | !ext2fs_test_valid(fs) || | |
1097 | (fs->super->s_state & EXT2_ERROR_FS) || | |
1098 | (ctx->flags & (E2F_FLAG_ABORT | E2F_FLAG_CANCEL)) || | |
1099 | (ctx->options & E2F_OPT_READONLY)) | |
1100 | return 0; | |
1101 | ||
1102 | for (g = 1; g < fs->group_desc_count; g++) { | |
1103 | if (!ext2fs_bg_has_super(fs, g)) | |
1104 | continue; | |
1105 | ||
027b0577 | 1106 | sb = ext2fs_group_first_block2(fs, g); |
0c37f456 | 1107 | |
982dd30c TT |
1108 | retval = io_channel_read_blk(fs->io, sb, -SUPERBLOCK_SIZE, |
1109 | buf); | |
1110 | if (retval) | |
1111 | continue; | |
1112 | backup_sb = (struct ext2_super_block *) buf; | |
1113 | #ifdef WORDS_BIGENDIAN | |
1114 | ext2fs_swap_super(backup_sb); | |
1115 | #endif | |
1116 | if ((backup_sb->s_magic != EXT2_SUPER_MAGIC) || | |
1117 | (backup_sb->s_rev_level > EXT2_LIB_CURRENT_REV) || | |
1118 | ((backup_sb->s_log_block_size + EXT2_MIN_BLOCK_LOG_SIZE) > | |
1119 | EXT2_MAX_BLOCK_LOG_SIZE) || | |
1120 | (EXT2_INODE_SIZE(backup_sb) < EXT2_GOOD_OLD_INODE_SIZE)) | |
0c37f456 | 1121 | continue; |
0c37f456 | 1122 | |
a8cde73a | 1123 | #define SUPER_INCOMPAT_DIFFERENT(x) \ |
982dd30c TT |
1124 | ((fs->super->x & ~FEATURE_INCOMPAT_IGNORE) != \ |
1125 | (backup_sb->x & ~FEATURE_INCOMPAT_IGNORE)) | |
a8cde73a | 1126 | #define SUPER_RO_COMPAT_DIFFERENT(x) \ |
982dd30c TT |
1127 | ((fs->super->x & ~FEATURE_RO_COMPAT_IGNORE) != \ |
1128 | (backup_sb->x & ~FEATURE_RO_COMPAT_IGNORE)) | |
a8cde73a | 1129 | #define SUPER_DIFFERENT(x) \ |
982dd30c | 1130 | (fs->super->x != backup_sb->x) |
a8cde73a | 1131 | |
0c37f456 | 1132 | if (SUPER_DIFFERENT(s_feature_compat) || |
a8cde73a TT |
1133 | SUPER_INCOMPAT_DIFFERENT(s_feature_incompat) || |
1134 | SUPER_RO_COMPAT_DIFFERENT(s_feature_ro_compat) || | |
0c37f456 | 1135 | SUPER_DIFFERENT(s_blocks_count) || |
2fe2d408 | 1136 | SUPER_DIFFERENT(s_blocks_count_hi) || |
0c37f456 | 1137 | SUPER_DIFFERENT(s_inodes_count) || |
982dd30c | 1138 | memcmp(fs->super->s_uuid, backup_sb->s_uuid, |
0c37f456 TT |
1139 | sizeof(fs->super->s_uuid))) |
1140 | ret = 1; | |
0c37f456 TT |
1141 | break; |
1142 | } | |
1143 | return ret; | |
1144 | } |