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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 | ||
1b6bf175 TT |
12 | #ifdef HAVE_ERRNO_H |
13 | #include <errno.h> | |
14 | #endif | |
1b6bf175 | 15 | |
54be2ccc | 16 | #ifndef EXT2_SKIP_UUID |
1b6bf175 | 17 | #include "uuid/uuid.h" |
54be2ccc | 18 | #endif |
1b6bf175 TT |
19 | #include "e2fsck.h" |
20 | #include "problem.h" | |
1b6bf175 TT |
21 | |
22 | #define MIN_CHECK 1 | |
23 | #define MAX_CHECK 2 | |
24 | ||
25 | static void check_super_value(e2fsck_t ctx, const char *descr, | |
26 | unsigned long value, int flags, | |
7f813ba3 | 27 | unsigned long min_val, unsigned long max_val) |
1b6bf175 TT |
28 | { |
29 | struct problem_context pctx; | |
30 | ||
7f813ba3 TT |
31 | if (((flags & MIN_CHECK) && (value < min_val)) || |
32 | ((flags & MAX_CHECK) && (value > max_val))) { | |
1b6bf175 TT |
33 | clear_problem_context(&pctx); |
34 | pctx.num = value; | |
35 | pctx.str = descr; | |
36 | fix_problem(ctx, PR_0_MISC_CORRUPT_SUPER, &pctx); | |
08b21301 | 37 | ctx->flags |= E2F_FLAG_ABORT; /* never get here! */ |
1b6bf175 TT |
38 | } |
39 | } | |
40 | ||
80bfaa3e TT |
41 | /* |
42 | * helper function to release an inode | |
43 | */ | |
44 | struct process_block_struct { | |
8394902e TT |
45 | e2fsck_t ctx; |
46 | char *buf; | |
80bfaa3e | 47 | struct problem_context *pctx; |
8394902e TT |
48 | int truncating; |
49 | int truncate_offset; | |
54434927 | 50 | e2_blkcnt_t truncate_block; |
8394902e TT |
51 | int truncated_blocks; |
52 | int abort; | |
53 | errcode_t errcode; | |
80bfaa3e TT |
54 | }; |
55 | ||
56 | static int release_inode_block(ext2_filsys fs, | |
6dc64392 | 57 | blk64_t *block_nr, |
54434927 | 58 | e2_blkcnt_t blockcnt, |
6dc64392 | 59 | blk64_t ref_blk EXT2FS_ATTR((unused)), |
54434927 | 60 | int ref_offset EXT2FS_ATTR((unused)), |
80bfaa3e TT |
61 | void *priv_data) |
62 | { | |
63 | struct process_block_struct *pb; | |
8394902e TT |
64 | e2fsck_t ctx; |
65 | struct problem_context *pctx; | |
6dc64392 | 66 | blk64_t blk = *block_nr; |
8394902e | 67 | int retval = 0; |
80bfaa3e TT |
68 | |
69 | pb = (struct process_block_struct *) priv_data; | |
70 | ctx = pb->ctx; | |
71 | pctx = pb->pctx; | |
72 | ||
73 | pctx->blk = blk; | |
74 | pctx->blkcount = blockcnt; | |
75 | ||
76 | if (HOLE_BLKADDR(blk)) | |
77 | return 0; | |
78 | ||
79 | if ((blk < fs->super->s_first_data_block) || | |
4efbac6f | 80 | (blk >= ext2fs_blocks_count(fs->super))) { |
80bfaa3e | 81 | fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_BLOCK_NUM, pctx); |
53ef44c4 | 82 | return_abort: |
80bfaa3e TT |
83 | pb->abort = 1; |
84 | return BLOCK_ABORT; | |
85 | } | |
86 | ||
c5d2f50d | 87 | if (!ext2fs_test_block_bitmap2(fs->block_map, blk)) { |
80bfaa3e | 88 | fix_problem(ctx, PR_0_ORPHAN_ALREADY_CLEARED_BLOCK, pctx); |
53ef44c4 | 89 | goto return_abort; |
8394902e TT |
90 | } |
91 | ||
92 | /* | |
93 | * If we are deleting an orphan, then we leave the fields alone. | |
94 | * If we are truncating an orphan, then update the inode fields | |
95 | * and clean up any partial block data. | |
96 | */ | |
97 | if (pb->truncating) { | |
98 | /* | |
99 | * We only remove indirect blocks if they are | |
100 | * completely empty. | |
101 | */ | |
102 | if (blockcnt < 0) { | |
103 | int i, limit; | |
53ef44c4 | 104 | blk_t *bp; |
efc6f628 | 105 | |
24a117ab | 106 | pb->errcode = io_channel_read_blk64(fs->io, blk, 1, |
8394902e TT |
107 | pb->buf); |
108 | if (pb->errcode) | |
53ef44c4 | 109 | goto return_abort; |
8394902e TT |
110 | |
111 | limit = fs->blocksize >> 2; | |
53ef44c4 TT |
112 | for (i = 0, bp = (blk_t *) pb->buf; |
113 | i < limit; i++, bp++) | |
114 | if (*bp) | |
8394902e TT |
115 | return 0; |
116 | } | |
117 | /* | |
118 | * We don't remove direct blocks until we've reached | |
119 | * the truncation block. | |
120 | */ | |
121 | if (blockcnt >= 0 && blockcnt < pb->truncate_block) | |
122 | return 0; | |
123 | /* | |
124 | * If part of the last block needs truncating, we do | |
125 | * it here. | |
126 | */ | |
127 | if ((blockcnt == pb->truncate_block) && pb->truncate_offset) { | |
24a117ab | 128 | pb->errcode = io_channel_read_blk64(fs->io, blk, 1, |
8394902e TT |
129 | pb->buf); |
130 | if (pb->errcode) | |
53ef44c4 | 131 | goto return_abort; |
8394902e TT |
132 | memset(pb->buf + pb->truncate_offset, 0, |
133 | fs->blocksize - pb->truncate_offset); | |
24a117ab | 134 | pb->errcode = io_channel_write_blk64(fs->io, blk, 1, |
8394902e TT |
135 | pb->buf); |
136 | if (pb->errcode) | |
53ef44c4 | 137 | goto return_abort; |
8394902e TT |
138 | } |
139 | pb->truncated_blocks++; | |
140 | *block_nr = 0; | |
141 | retval |= BLOCK_CHANGED; | |
80bfaa3e | 142 | } |
efc6f628 | 143 | |
48f23054 | 144 | ext2fs_block_alloc_stats2(fs, blk, -1); |
8394902e | 145 | return retval; |
80bfaa3e | 146 | } |
efc6f628 | 147 | |
80bfaa3e TT |
148 | /* |
149 | * This function releases an inode. Returns 1 if an inconsistency was | |
8394902e TT |
150 | * found. If the inode has a link count, then it is being truncated and |
151 | * not deleted. | |
80bfaa3e | 152 | */ |
86c627ec | 153 | static int release_inode_blocks(e2fsck_t ctx, ext2_ino_t ino, |
721edd0e | 154 | struct ext2_inode *inode, char *block_buf, |
80bfaa3e TT |
155 | struct problem_context *pctx) |
156 | { | |
0684a4f3 | 157 | struct process_block_struct pb; |
8394902e | 158 | ext2_filsys fs = ctx->fs; |
80bfaa3e | 159 | errcode_t retval; |
0684a4f3 | 160 | __u32 count; |
80bfaa3e | 161 | |
42475e28 TT |
162 | if (!ext2fs_inode_has_valid_blocks(inode)) |
163 | return 0; | |
164 | ||
8394902e | 165 | pb.buf = block_buf + 3 * ctx->fs->blocksize; |
80bfaa3e TT |
166 | pb.ctx = ctx; |
167 | pb.abort = 0; | |
8394902e | 168 | pb.errcode = 0; |
80bfaa3e | 169 | pb.pctx = pctx; |
8394902e TT |
170 | if (inode->i_links_count) { |
171 | pb.truncating = 1; | |
54434927 | 172 | pb.truncate_block = (e2_blkcnt_t) |
8394902e TT |
173 | ((((long long)inode->i_size_high << 32) + |
174 | inode->i_size + fs->blocksize - 1) / | |
175 | fs->blocksize); | |
176 | pb.truncate_offset = inode->i_size % fs->blocksize; | |
177 | } else { | |
178 | pb.truncating = 0; | |
179 | pb.truncate_block = 0; | |
180 | pb.truncate_offset = 0; | |
181 | } | |
182 | pb.truncated_blocks = 0; | |
6dc64392 | 183 | retval = ext2fs_block_iterate3(fs, ino, BLOCK_FLAG_DEPTH_TRAVERSE, |
8394902e | 184 | block_buf, release_inode_block, &pb); |
80bfaa3e | 185 | if (retval) { |
8394902e | 186 | com_err("release_inode_blocks", retval, |
80bfaa3e TT |
187 | _("while calling ext2fs_block_iterate for inode %d"), |
188 | ino); | |
189 | return 1; | |
190 | } | |
191 | if (pb.abort) | |
192 | return 1; | |
193 | ||
8394902e TT |
194 | /* Refresh the inode since ext2fs_block_iterate may have changed it */ |
195 | e2fsck_read_inode(ctx, ino, inode, "release_inode_blocks"); | |
196 | ||
197 | if (pb.truncated_blocks) | |
1ca1059f | 198 | ext2fs_iblk_sub_blocks(fs, inode, pb.truncated_blocks); |
8394902e | 199 | |
a63745e8 | 200 | if (ext2fs_file_acl_block(inode)) { |
6dc64392 | 201 | retval = ext2fs_adjust_ea_refcount2(fs, ext2fs_file_acl_block(inode), |
0684a4f3 TT |
202 | block_buf, -1, &count); |
203 | if (retval == EXT2_ET_BAD_EA_BLOCK_NUM) { | |
204 | retval = 0; | |
205 | count = 1; | |
206 | } | |
207 | if (retval) { | |
208 | com_err("release_inode_blocks", retval, | |
6dc64392 | 209 | _("while calling ext2fs_adjust_ea_refcount2 for inode %d"), |
0684a4f3 TT |
210 | ino); |
211 | return 1; | |
212 | } | |
213 | if (count == 0) | |
48f23054 | 214 | ext2fs_block_alloc_stats2(fs, |
a63745e8 VAH |
215 | ext2fs_file_acl_block(inode), |
216 | -1); | |
217 | ext2fs_file_acl_block_set(inode, 0); | |
0684a4f3 | 218 | } |
80bfaa3e TT |
219 | return 0; |
220 | } | |
221 | ||
222 | /* | |
223 | * This function releases all of the orphan inodes. It returns 1 if | |
224 | * it hit some error, and 0 on success. | |
225 | */ | |
226 | static int release_orphan_inodes(e2fsck_t ctx) | |
227 | { | |
228 | ext2_filsys fs = ctx->fs; | |
86c627ec | 229 | ext2_ino_t ino, next_ino; |
80bfaa3e TT |
230 | struct ext2_inode inode; |
231 | struct problem_context pctx; | |
232 | char *block_buf; | |
233 | ||
234 | if ((ino = fs->super->s_last_orphan) == 0) | |
235 | return 0; | |
236 | ||
25c63ba0 TT |
237 | /* |
238 | * Win or lose, we won't be using the head of the orphan inode | |
239 | * list again. | |
240 | */ | |
241 | fs->super->s_last_orphan = 0; | |
242 | ext2fs_mark_super_dirty(fs); | |
eb4ab510 TT |
243 | |
244 | /* | |
245 | * If the filesystem contains errors, don't run the orphan | |
246 | * list, since the orphan list can't be trusted; and we're | |
247 | * going to be running a full e2fsck run anyway... | |
248 | */ | |
249 | if (fs->super->s_state & EXT2_ERROR_FS) | |
250 | return 0; | |
efc6f628 | 251 | |
80bfaa3e TT |
252 | if ((ino < EXT2_FIRST_INODE(fs->super)) || |
253 | (ino > fs->super->s_inodes_count)) { | |
254 | clear_problem_context(&pctx); | |
53ef44c4 | 255 | pctx.ino = ino; |
80bfaa3e TT |
256 | fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_HEAD_INODE, &pctx); |
257 | return 1; | |
258 | } | |
259 | ||
8394902e | 260 | block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 4, |
9b565759 | 261 | "block iterate buffer"); |
80bfaa3e | 262 | e2fsck_read_bitmaps(ctx); |
efc6f628 | 263 | |
80bfaa3e | 264 | while (ino) { |
8394902e | 265 | e2fsck_read_inode(ctx, ino, &inode, "release_orphan_inodes"); |
80bfaa3e | 266 | clear_problem_context(&pctx); |
ecf1b776 | 267 | pctx.ino = ino; |
80bfaa3e | 268 | pctx.inode = &inode; |
f0b8c87d TT |
269 | pctx.str = inode.i_links_count ? _("Truncating") : |
270 | _("Clearing"); | |
80bfaa3e | 271 | |
8394902e | 272 | fix_problem(ctx, PR_0_ORPHAN_CLEAR_INODE, &pctx); |
ecf1b776 | 273 | |
80bfaa3e TT |
274 | next_ino = inode.i_dtime; |
275 | if (next_ino && | |
99a2cc96 TT |
276 | ((next_ino < EXT2_FIRST_INODE(fs->super)) || |
277 | (next_ino > fs->super->s_inodes_count))) { | |
278 | pctx.ino = next_ino; | |
80bfaa3e | 279 | fix_problem(ctx, PR_0_ORPHAN_ILLEGAL_INODE, &pctx); |
53ef44c4 | 280 | goto return_abort; |
80bfaa3e TT |
281 | } |
282 | ||
8394902e | 283 | if (release_inode_blocks(ctx, ino, &inode, block_buf, &pctx)) |
53ef44c4 | 284 | goto return_abort; |
ecf1b776 | 285 | |
8394902e | 286 | if (!inode.i_links_count) { |
0684a4f3 TT |
287 | ext2fs_inode_alloc_stats2(fs, ino, -1, |
288 | LINUX_S_ISDIR(inode.i_mode)); | |
1f3ad14a | 289 | inode.i_dtime = ctx->now; |
eb16f861 ST |
290 | } else { |
291 | inode.i_dtime = 0; | |
8394902e TT |
292 | } |
293 | e2fsck_write_inode(ctx, ino, &inode, "delete_file"); | |
80bfaa3e TT |
294 | ino = next_ino; |
295 | } | |
c4e3d3f3 | 296 | ext2fs_free_mem(&block_buf); |
80bfaa3e | 297 | return 0; |
53ef44c4 | 298 | return_abort: |
c4e3d3f3 | 299 | ext2fs_free_mem(&block_buf); |
80bfaa3e TT |
300 | return 1; |
301 | } | |
302 | ||
c3ffaf83 TT |
303 | /* |
304 | * Check the resize inode to make sure it is sane. We check both for | |
305 | * the case where on-line resizing is not enabled (in which case the | |
306 | * resize inode should be cleared) as well as the case where on-line | |
307 | * resizing is enabled. | |
308 | */ | |
69d0edfd | 309 | void check_resize_inode(e2fsck_t ctx) |
c3ffaf83 TT |
310 | { |
311 | ext2_filsys fs = ctx->fs; | |
312 | struct ext2_inode inode; | |
313 | struct problem_context pctx; | |
642935c0 TT |
314 | int i, gdt_off, ind_off; |
315 | dgrp_t j; | |
6dc64392 | 316 | blk64_t blk, pblk, expect; |
c3ffaf83 TT |
317 | __u32 *dind_buf = 0, *ind_buf; |
318 | errcode_t retval; | |
319 | ||
320 | clear_problem_context(&pctx); | |
c3ffaf83 | 321 | |
efc6f628 TT |
322 | /* |
323 | * If the resize inode feature isn't set, then | |
ea774315 | 324 | * s_reserved_gdt_blocks must be zero. |
c3ffaf83 | 325 | */ |
efc6f628 | 326 | if (!(fs->super->s_feature_compat & |
c3ffaf83 TT |
327 | EXT2_FEATURE_COMPAT_RESIZE_INODE)) { |
328 | if (fs->super->s_reserved_gdt_blocks) { | |
329 | pctx.num = fs->super->s_reserved_gdt_blocks; | |
330 | if (fix_problem(ctx, PR_0_NONZERO_RESERVED_GDT_BLOCKS, | |
331 | &pctx)) { | |
332 | fs->super->s_reserved_gdt_blocks = 0; | |
333 | ext2fs_mark_super_dirty(fs); | |
334 | } | |
335 | } | |
ea774315 TT |
336 | } |
337 | ||
1f3ad14a | 338 | /* Read the resize inode */ |
ea774315 TT |
339 | pctx.ino = EXT2_RESIZE_INO; |
340 | retval = ext2fs_read_inode(fs, EXT2_RESIZE_INO, &inode); | |
341 | if (retval) { | |
efc6f628 | 342 | if (fs->super->s_feature_compat & |
ea774315 TT |
343 | EXT2_FEATURE_COMPAT_RESIZE_INODE) |
344 | ctx->flags |= E2F_FLAG_RESIZE_INODE; | |
345 | return; | |
346 | } | |
347 | ||
efc6f628 TT |
348 | /* |
349 | * If the resize inode feature isn't set, check to make sure | |
ea774315 TT |
350 | * the resize inode is cleared; then we're done. |
351 | */ | |
efc6f628 | 352 | if (!(fs->super->s_feature_compat & |
ea774315 | 353 | EXT2_FEATURE_COMPAT_RESIZE_INODE)) { |
c3ffaf83 TT |
354 | for (i=0; i < EXT2_N_BLOCKS; i++) { |
355 | if (inode.i_block[i]) | |
356 | break; | |
357 | } | |
358 | if ((i < EXT2_N_BLOCKS) && | |
359 | fix_problem(ctx, PR_0_CLEAR_RESIZE_INODE, &pctx)) { | |
360 | memset(&inode, 0, sizeof(inode)); | |
361 | e2fsck_write_inode(ctx, EXT2_RESIZE_INO, &inode, | |
362 | "clear_resize"); | |
363 | } | |
364 | return; | |
365 | } | |
ea774315 | 366 | |
efc6f628 | 367 | /* |
c3ffaf83 TT |
368 | * The resize inode feature is enabled; check to make sure the |
369 | * only block in use is the double indirect block | |
370 | */ | |
371 | blk = inode.i_block[EXT2_DIND_BLOCK]; | |
372 | for (i=0; i < EXT2_N_BLOCKS; i++) { | |
373 | if (i != EXT2_DIND_BLOCK && inode.i_block[i]) | |
374 | break; | |
375 | } | |
d4dc0a9e TT |
376 | if ((i < EXT2_N_BLOCKS) || !blk || !inode.i_links_count || |
377 | !(inode.i_mode & LINUX_S_IFREG) || | |
c3ffaf83 | 378 | (blk < fs->super->s_first_data_block || |
4efbac6f | 379 | blk >= ext2fs_blocks_count(fs->super))) { |
c3ffaf83 TT |
380 | resize_inode_invalid: |
381 | if (fix_problem(ctx, PR_0_RESIZE_INODE_INVALID, &pctx)) { | |
382 | memset(&inode, 0, sizeof(inode)); | |
383 | e2fsck_write_inode(ctx, EXT2_RESIZE_INO, &inode, | |
384 | "clear_resize"); | |
385 | ctx->flags |= E2F_FLAG_RESIZE_INODE; | |
386 | } | |
387 | if (!(ctx->options & E2F_OPT_READONLY)) { | |
388 | fs->super->s_state &= ~EXT2_VALID_FS; | |
389 | ext2fs_mark_super_dirty(fs); | |
390 | } | |
391 | goto cleanup; | |
392 | } | |
393 | dind_buf = (__u32 *) e2fsck_allocate_memory(ctx, fs->blocksize * 2, | |
394 | "resize dind buffer"); | |
395 | ind_buf = (__u32 *) ((char *) dind_buf + fs->blocksize); | |
396 | ||
dc8ce346 | 397 | retval = ext2fs_read_ind_block(fs, blk, dind_buf); |
c3ffaf83 TT |
398 | if (retval) |
399 | goto resize_inode_invalid; | |
400 | ||
401 | gdt_off = fs->desc_blocks; | |
402 | pblk = fs->super->s_first_data_block + 1 + fs->desc_blocks; | |
25567a7b TT |
403 | if (fs->blocksize == 1024 && fs->super->s_first_data_block == 0) |
404 | pblk++; /* Deal with 1024 blocksize bigalloc fs */ | |
efc6f628 | 405 | for (i = 0; i < fs->super->s_reserved_gdt_blocks / 4; |
c3ffaf83 TT |
406 | i++, gdt_off++, pblk++) { |
407 | gdt_off %= fs->blocksize/4; | |
408 | if (dind_buf[gdt_off] != pblk) | |
409 | goto resize_inode_invalid; | |
dc8ce346 | 410 | retval = ext2fs_read_ind_block(fs, pblk, ind_buf); |
efc6f628 | 411 | if (retval) |
c3ffaf83 TT |
412 | goto resize_inode_invalid; |
413 | ind_off = 0; | |
414 | for (j = 1; j < fs->group_desc_count; j++) { | |
415 | if (!ext2fs_bg_has_super(fs, j)) | |
416 | continue; | |
417 | expect = pblk + (j * fs->super->s_blocks_per_group); | |
418 | if (ind_buf[ind_off] != expect) | |
419 | goto resize_inode_invalid; | |
420 | ind_off++; | |
421 | } | |
422 | } | |
423 | ||
424 | cleanup: | |
425 | if (dind_buf) | |
426 | ext2fs_free_mem(&dind_buf); | |
427 | ||
428 | } | |
80bfaa3e | 429 | |
f77704e4 TT |
430 | /* |
431 | * This function checks the dirhash signed/unsigned hint if necessary. | |
432 | */ | |
642935c0 | 433 | static void e2fsck_fix_dirhash_hint(e2fsck_t ctx) |
f77704e4 TT |
434 | { |
435 | struct ext2_super_block *sb = ctx->fs->super; | |
436 | struct problem_context pctx; | |
f77704e4 TT |
437 | char c; |
438 | ||
439 | if ((ctx->options & E2F_OPT_READONLY) || | |
440 | !(sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) || | |
441 | (sb->s_flags & (EXT2_FLAGS_SIGNED_HASH|EXT2_FLAGS_UNSIGNED_HASH))) | |
442 | return; | |
443 | ||
444 | c = (char) 255; | |
445 | ||
446 | clear_problem_context(&pctx); | |
447 | if (fix_problem(ctx, PR_0_DIRHASH_HINT, &pctx)) { | |
448 | if (((int) c) == -1) { | |
449 | sb->s_flags |= EXT2_FLAGS_SIGNED_HASH; | |
450 | } else { | |
451 | sb->s_flags |= EXT2_FLAGS_UNSIGNED_HASH; | |
452 | } | |
453 | ext2fs_mark_super_dirty(ctx->fs); | |
454 | } | |
455 | } | |
456 | ||
457 | ||
1b6bf175 TT |
458 | void check_super_block(e2fsck_t ctx) |
459 | { | |
460 | ext2_filsys fs = ctx->fs; | |
6dc64392 | 461 | blk64_t first_block, last_block; |
5dd8f963 | 462 | struct ext2_super_block *sb = fs->super; |
26ea4899 | 463 | problem_t problem; |
6dc64392 | 464 | blk64_t blocks_per_group = fs->super->s_blocks_per_group; |
44fe08f1 | 465 | __u32 bpg_max, cpg_max; |
78cf0547 | 466 | int inodes_per_block; |
b21bf267 | 467 | int ipg_max; |
89db86d3 | 468 | int inode_size; |
ba5131f6 | 469 | int accept_time_fudge; |
177839e2 | 470 | int broken_system_clock; |
7f813ba3 | 471 | dgrp_t i; |
6dc64392 | 472 | blk64_t should_be; |
1b6bf175 | 473 | struct problem_context pctx; |
6dc64392 | 474 | blk64_t free_blocks = 0; |
5d38ef1d | 475 | ino_t free_inodes = 0; |
80875db5 | 476 | int csum_flag, clear_test_fs_flag; |
b21bf267 AD |
477 | |
478 | inodes_per_block = EXT2_INODES_PER_BLOCK(fs->super); | |
479 | ipg_max = inodes_per_block * (blocks_per_group - 4); | |
480 | if (ipg_max > EXT2_MAX_INODES_PER_GROUP(sb)) | |
481 | ipg_max = EXT2_MAX_INODES_PER_GROUP(sb); | |
44fe08f1 TT |
482 | cpg_max = 8 * EXT2_BLOCK_SIZE(sb); |
483 | if (cpg_max > EXT2_MAX_CLUSTERS_PER_GROUP(sb)) | |
484 | cpg_max = EXT2_MAX_CLUSTERS_PER_GROUP(sb); | |
485 | bpg_max = 8 * EXT2_BLOCK_SIZE(sb) * EXT2FS_CLUSTER_RATIO(fs); | |
b21bf267 AD |
486 | if (bpg_max > EXT2_MAX_BLOCKS_PER_GROUP(sb)) |
487 | bpg_max = EXT2_MAX_BLOCKS_PER_GROUP(sb); | |
1b6bf175 | 488 | |
54dc7ca2 | 489 | ctx->invalid_inode_bitmap_flag = (int *) e2fsck_allocate_memory(ctx, |
f8188fff | 490 | sizeof(int) * fs->group_desc_count, "invalid_inode_bitmap"); |
54dc7ca2 | 491 | ctx->invalid_block_bitmap_flag = (int *) e2fsck_allocate_memory(ctx, |
f8188fff | 492 | sizeof(int) * fs->group_desc_count, "invalid_block_bitmap"); |
54dc7ca2 | 493 | ctx->invalid_inode_table_flag = (int *) e2fsck_allocate_memory(ctx, |
f8188fff | 494 | sizeof(int) * fs->group_desc_count, "invalid_inode_table"); |
b21bf267 | 495 | |
1b6bf175 TT |
496 | clear_problem_context(&pctx); |
497 | ||
498 | /* | |
499 | * Verify the super block constants... | |
500 | */ | |
5dd8f963 | 501 | check_super_value(ctx, "inodes_count", sb->s_inodes_count, |
1b6bf175 | 502 | MIN_CHECK, 1, 0); |
4efbac6f | 503 | check_super_value(ctx, "blocks_count", ext2fs_blocks_count(sb), |
1b6bf175 | 504 | MIN_CHECK, 1, 0); |
5dd8f963 | 505 | check_super_value(ctx, "first_data_block", sb->s_first_data_block, |
4efbac6f | 506 | MAX_CHECK, 0, ext2fs_blocks_count(sb)); |
5dd8f963 | 507 | check_super_value(ctx, "log_block_size", sb->s_log_block_size, |
31e29a12 TT |
508 | MIN_CHECK | MAX_CHECK, 0, |
509 | EXT2_MAX_BLOCK_LOG_SIZE - EXT2_MIN_BLOCK_LOG_SIZE); | |
412376ef TT |
510 | check_super_value(ctx, "log_cluster_size", |
511 | sb->s_log_cluster_size, | |
512 | MIN_CHECK | MAX_CHECK, sb->s_log_block_size, | |
513 | (EXT2_MAX_CLUSTER_LOG_SIZE - | |
514 | EXT2_MIN_CLUSTER_LOG_SIZE)); | |
515 | check_super_value(ctx, "clusters_per_group", sb->s_clusters_per_group, | |
44fe08f1 | 516 | MIN_CHECK | MAX_CHECK, 8, cpg_max); |
5dd8f963 | 517 | check_super_value(ctx, "blocks_per_group", sb->s_blocks_per_group, |
b21bf267 | 518 | MIN_CHECK | MAX_CHECK, 8, bpg_max); |
5dd8f963 | 519 | check_super_value(ctx, "inodes_per_group", sb->s_inodes_per_group, |
b21bf267 | 520 | MIN_CHECK | MAX_CHECK, inodes_per_block, ipg_max); |
4efbac6f VAH |
521 | check_super_value(ctx, "r_blocks_count", ext2fs_r_blocks_count(sb), |
522 | MAX_CHECK, 0, ext2fs_blocks_count(sb) / 2); | |
efc6f628 | 523 | check_super_value(ctx, "reserved_gdt_blocks", |
c3ffaf83 TT |
524 | sb->s_reserved_gdt_blocks, MAX_CHECK, 0, |
525 | fs->blocksize/4); | |
1f790a7c TT |
526 | if (sb->s_rev_level > EXT2_GOOD_OLD_REV) |
527 | check_super_value(ctx, "first_ino", sb->s_first_ino, | |
528 | MIN_CHECK | MAX_CHECK, | |
529 | EXT2_GOOD_OLD_FIRST_INO, sb->s_inodes_count); | |
89db86d3 TT |
530 | inode_size = EXT2_INODE_SIZE(sb); |
531 | check_super_value(ctx, "inode_size", | |
532 | inode_size, MIN_CHECK | MAX_CHECK, | |
533 | EXT2_GOOD_OLD_INODE_SIZE, fs->blocksize); | |
44fe08f1 TT |
534 | if (sb->s_blocks_per_group != (sb->s_clusters_per_group * |
535 | EXT2FS_CLUSTER_RATIO(fs))) { | |
536 | pctx.num = sb->s_clusters_per_group * EXT2FS_CLUSTER_RATIO(fs); | |
537 | pctx.str = "block_size"; | |
538 | fix_problem(ctx, PR_0_MISC_CORRUPT_SUPER, &pctx); | |
539 | ctx->flags |= E2F_FLAG_ABORT; /* never get here! */ | |
540 | return; | |
541 | } | |
89db86d3 TT |
542 | if (inode_size & (inode_size - 1)) { |
543 | pctx.num = inode_size; | |
544 | pctx.str = "inode_size"; | |
545 | fix_problem(ctx, PR_0_MISC_CORRUPT_SUPER, &pctx); | |
546 | ctx->flags |= E2F_FLAG_ABORT; /* never get here! */ | |
547 | return; | |
548 | } | |
efc6f628 | 549 | |
d2af1bdd | 550 | if ((ctx->flags & E2F_FLAG_GOT_DEVSIZE) && |
4efbac6f VAH |
551 | (ctx->num_blocks < ext2fs_blocks_count(sb))) { |
552 | pctx.blk = ext2fs_blocks_count(sb); | |
d2af1bdd TT |
553 | pctx.blk2 = ctx->num_blocks; |
554 | if (fix_problem(ctx, PR_0_FS_SIZE_WRONG, &pctx)) { | |
08b21301 TT |
555 | ctx->flags |= E2F_FLAG_ABORT; |
556 | return; | |
557 | } | |
1b6bf175 TT |
558 | } |
559 | ||
25567a7b TT |
560 | should_be = (sb->s_log_block_size == 0 && |
561 | EXT2FS_CLUSTER_RATIO(fs) == 1) ? 1 : 0; | |
5dd8f963 TT |
562 | if (sb->s_first_data_block != should_be) { |
563 | pctx.blk = sb->s_first_data_block; | |
1b6bf175 TT |
564 | pctx.blk2 = should_be; |
565 | fix_problem(ctx, PR_0_FIRST_DATA_BLOCK, &pctx); | |
08b21301 TT |
566 | ctx->flags |= E2F_FLAG_ABORT; |
567 | return; | |
1b6bf175 TT |
568 | } |
569 | ||
5dd8f963 TT |
570 | should_be = sb->s_inodes_per_group * fs->group_desc_count; |
571 | if (sb->s_inodes_count != should_be) { | |
572 | pctx.ino = sb->s_inodes_count; | |
d4b0ce03 TT |
573 | pctx.ino2 = should_be; |
574 | if (fix_problem(ctx, PR_0_INODE_COUNT_WRONG, &pctx)) { | |
5dd8f963 | 575 | sb->s_inodes_count = should_be; |
d4b0ce03 TT |
576 | ext2fs_mark_super_dirty(fs); |
577 | } | |
578 | } | |
579 | ||
1b6bf175 TT |
580 | /* |
581 | * Verify the group descriptors.... | |
582 | */ | |
88b34b1f | 583 | first_block = sb->s_first_data_block; |
4efbac6f | 584 | last_block = ext2fs_blocks_count(sb)-1; |
1b6bf175 | 585 | |
49a7360b JS |
586 | csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super, |
587 | EXT4_FEATURE_RO_COMPAT_GDT_CSUM); | |
d7cca6b0 | 588 | for (i = 0; i < fs->group_desc_count; i++) { |
1b6bf175 | 589 | pctx.group = i; |
abf23439 | 590 | |
88b34b1f JS |
591 | if (!EXT2_HAS_INCOMPAT_FEATURE(fs->super, |
592 | EXT4_FEATURE_INCOMPAT_FLEX_BG)) { | |
b49f78fe TT |
593 | first_block = ext2fs_group_first_block2(fs, i); |
594 | last_block = ext2fs_group_last_block2(fs, i); | |
88b34b1f | 595 | } |
bb1a46a4 | 596 | |
d7cca6b0 VAH |
597 | if ((ext2fs_block_bitmap_loc(fs, i) < first_block) || |
598 | (ext2fs_block_bitmap_loc(fs, i) > last_block)) { | |
599 | pctx.blk = ext2fs_block_bitmap_loc(fs, i); | |
24bfb443 | 600 | if (fix_problem(ctx, PR_0_BB_NOT_GROUP, &pctx)) |
d7cca6b0 | 601 | ext2fs_block_bitmap_loc_set(fs, i, 0); |
24bfb443 | 602 | } |
d7cca6b0 | 603 | if (ext2fs_block_bitmap_loc(fs, i) == 0) { |
24bfb443 TT |
604 | ctx->invalid_block_bitmap_flag[i]++; |
605 | ctx->invalid_bitmaps++; | |
1b6bf175 | 606 | } |
d7cca6b0 VAH |
607 | if ((ext2fs_inode_bitmap_loc(fs, i) < first_block) || |
608 | (ext2fs_inode_bitmap_loc(fs, i) > last_block)) { | |
609 | pctx.blk = ext2fs_inode_bitmap_loc(fs, i); | |
24bfb443 | 610 | if (fix_problem(ctx, PR_0_IB_NOT_GROUP, &pctx)) |
d7cca6b0 | 611 | ext2fs_inode_bitmap_loc_set(fs, i, 0); |
24bfb443 | 612 | } |
d7cca6b0 | 613 | if (ext2fs_inode_bitmap_loc(fs, i) == 0) { |
24bfb443 TT |
614 | ctx->invalid_inode_bitmap_flag[i]++; |
615 | ctx->invalid_bitmaps++; | |
1b6bf175 | 616 | } |
d7cca6b0 VAH |
617 | if ((ext2fs_inode_table_loc(fs, i) < first_block) || |
618 | ((ext2fs_inode_table_loc(fs, i) + | |
bb1a46a4 | 619 | fs->inode_blocks_per_group - 1) > last_block)) { |
d7cca6b0 | 620 | pctx.blk = ext2fs_inode_table_loc(fs, i); |
24bfb443 | 621 | if (fix_problem(ctx, PR_0_ITABLE_NOT_GROUP, &pctx)) |
d7cca6b0 | 622 | ext2fs_inode_table_loc_set(fs, i, 0); |
24bfb443 | 623 | } |
d7cca6b0 | 624 | if (ext2fs_inode_table_loc(fs, i) == 0) { |
24bfb443 TT |
625 | ctx->invalid_inode_table_flag[i]++; |
626 | ctx->invalid_bitmaps++; | |
1b6bf175 | 627 | } |
d7cca6b0 VAH |
628 | free_blocks += ext2fs_bg_free_blocks_count(fs, i); |
629 | free_inodes += ext2fs_bg_free_inodes_count(fs, i); | |
550a4afa | 630 | |
d7cca6b0 VAH |
631 | if ((ext2fs_bg_free_blocks_count(fs, i) > sb->s_blocks_per_group) || |
632 | (ext2fs_bg_free_inodes_count(fs, i) > sb->s_inodes_per_group) || | |
633 | (ext2fs_bg_used_dirs_count(fs, i) > sb->s_inodes_per_group)) | |
550a4afa TT |
634 | ext2fs_unmark_valid(fs); |
635 | ||
0d5439c8 | 636 | should_be = 0; |
49a7360b JS |
637 | if (!ext2fs_group_desc_csum_verify(fs, i)) { |
638 | if (fix_problem(ctx, PR_0_GDT_CSUM, &pctx)) { | |
e633b58a ES |
639 | ext2fs_bg_flags_clear(fs, i, EXT2_BG_BLOCK_UNINIT); |
640 | ext2fs_bg_flags_clear(fs, i, EXT2_BG_INODE_UNINIT); | |
d7cca6b0 | 641 | ext2fs_bg_itable_unused_set(fs, i, 0); |
0d5439c8 | 642 | should_be = 1; |
49a7360b JS |
643 | } |
644 | ext2fs_unmark_valid(fs); | |
645 | } | |
646 | ||
16b851cd | 647 | if (!csum_flag && |
cd65a24e TT |
648 | (ext2fs_bg_flags_test(fs, i, EXT2_BG_BLOCK_UNINIT) || |
649 | ext2fs_bg_flags_test(fs, i, EXT2_BG_INODE_UNINIT) || | |
d7cca6b0 | 650 | ext2fs_bg_itable_unused(fs, i) != 0)) { |
49a7360b | 651 | if (fix_problem(ctx, PR_0_GDT_UNINIT, &pctx)) { |
e633b58a ES |
652 | ext2fs_bg_flags_clear(fs, i, EXT2_BG_BLOCK_UNINIT); |
653 | ext2fs_bg_flags_clear(fs, i, EXT2_BG_INODE_UNINIT); | |
d7cca6b0 | 654 | ext2fs_bg_itable_unused_set(fs, i, 0); |
0d5439c8 | 655 | should_be = 1; |
49a7360b JS |
656 | } |
657 | ext2fs_unmark_valid(fs); | |
658 | } | |
0d5439c8 AD |
659 | |
660 | if (i == fs->group_desc_count - 1 && | |
cd65a24e | 661 | ext2fs_bg_flags_test(fs, i, EXT2_BG_BLOCK_UNINIT)) { |
0d5439c8 | 662 | if (fix_problem(ctx, PR_0_BB_UNINIT_LAST, &pctx)) { |
e633b58a | 663 | ext2fs_bg_flags_clear(fs, i, EXT2_BG_BLOCK_UNINIT); |
0d5439c8 AD |
664 | should_be = 1; |
665 | } | |
666 | ext2fs_unmark_valid(fs); | |
667 | } | |
668 | ||
cd65a24e TT |
669 | if (ext2fs_bg_flags_test(fs, i, EXT2_BG_BLOCK_UNINIT) && |
670 | !ext2fs_bg_flags_test(fs, i, EXT2_BG_INODE_UNINIT)) { | |
0d5439c8 | 671 | if (fix_problem(ctx, PR_0_BB_UNINIT_IB_INIT, &pctx)) { |
e633b58a | 672 | ext2fs_bg_flags_clear(fs, i, EXT2_BG_BLOCK_UNINIT); |
0d5439c8 AD |
673 | should_be = 1; |
674 | } | |
49a7360b JS |
675 | ext2fs_unmark_valid(fs); |
676 | } | |
0d5439c8 | 677 | |
49a7360b | 678 | if (csum_flag && |
d7cca6b0 VAH |
679 | (ext2fs_bg_itable_unused(fs, i) > ext2fs_bg_free_inodes_count(fs, i) || |
680 | ext2fs_bg_itable_unused(fs, i) > sb->s_inodes_per_group)) { | |
681 | pctx.blk = ext2fs_bg_itable_unused(fs, i); | |
0d5439c8 | 682 | if (fix_problem(ctx, PR_0_GDT_ITABLE_UNUSED, &pctx)) { |
d7cca6b0 | 683 | ext2fs_bg_itable_unused_set(fs, i, 0); |
0d5439c8 AD |
684 | should_be = 1; |
685 | } | |
49a7360b JS |
686 | ext2fs_unmark_valid(fs); |
687 | } | |
0d5439c8 AD |
688 | |
689 | if (should_be) | |
690 | ext2fs_group_desc_csum_set(fs, i); | |
bee24f36 VAH |
691 | /* If the user aborts e2fsck by typing ^C, stop right away */ |
692 | if (ctx->flags & E2F_FLAG_SIGNAL_MASK) | |
693 | return; | |
1b6bf175 | 694 | } |
550a4afa | 695 | |
fe75afbf | 696 | ctx->free_blocks = EXT2FS_C2B(fs, free_blocks); |
a3efe484 | 697 | ctx->free_inodes = free_inodes; |
efc6f628 | 698 | |
4efbac6f | 699 | if ((ext2fs_free_blocks_count(sb) > ext2fs_blocks_count(sb)) || |
550a4afa TT |
700 | (sb->s_free_inodes_count > sb->s_inodes_count)) |
701 | ext2fs_unmark_valid(fs); | |
702 | ||
703 | ||
1b6bf175 TT |
704 | /* |
705 | * If we have invalid bitmaps, set the error state of the | |
706 | * filesystem. | |
707 | */ | |
708 | if (ctx->invalid_bitmaps && !(ctx->options & E2F_OPT_READONLY)) { | |
550a4afa | 709 | sb->s_state &= ~EXT2_VALID_FS; |
1b6bf175 TT |
710 | ext2fs_mark_super_dirty(fs); |
711 | } | |
712 | ||
4ea0a110 | 713 | clear_problem_context(&pctx); |
efc6f628 | 714 | |
54be2ccc | 715 | #ifndef EXT2_SKIP_UUID |
1b6bf175 TT |
716 | /* |
717 | * If the UUID field isn't assigned, assign it. | |
718 | */ | |
5dd8f963 | 719 | if (!(ctx->options & E2F_OPT_READONLY) && uuid_is_null(sb->s_uuid)) { |
1b6bf175 | 720 | if (fix_problem(ctx, PR_0_ADD_UUID, &pctx)) { |
5dd8f963 | 721 | uuid_generate(sb->s_uuid); |
1b6bf175 | 722 | ext2fs_mark_super_dirty(fs); |
299d7424 | 723 | fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; |
1b6bf175 TT |
724 | } |
725 | } | |
54be2ccc | 726 | #endif |
2a77a784 | 727 | |
80875db5 TT |
728 | /* |
729 | * Check to see if we should disable the test_fs flag | |
730 | */ | |
731 | profile_get_boolean(ctx->profile, "options", | |
732 | "clear_test_fs_flag", 0, 1, | |
733 | &clear_test_fs_flag); | |
734 | if (!(ctx->options & E2F_OPT_READONLY) && | |
735 | clear_test_fs_flag && | |
736 | (fs->super->s_flags & EXT2_FLAGS_TEST_FILESYS) && | |
737 | (fs_proc_check("ext4") || check_for_modules("ext4"))) { | |
738 | if (fix_problem(ctx, PR_0_CLEAR_TESTFS_FLAG, &pctx)) { | |
739 | fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS; | |
740 | ext2fs_mark_super_dirty(fs); | |
741 | fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; | |
742 | } | |
743 | } | |
744 | ||
4ea0a110 TT |
745 | /* |
746 | * For the Hurd, check to see if the filetype option is set, | |
747 | * since it doesn't support it. | |
748 | */ | |
80bfaa3e TT |
749 | if (!(ctx->options & E2F_OPT_READONLY) && |
750 | fs->super->s_creator_os == EXT2_OS_HURD && | |
4ea0a110 TT |
751 | (fs->super->s_feature_incompat & |
752 | EXT2_FEATURE_INCOMPAT_FILETYPE)) { | |
753 | if (fix_problem(ctx, PR_0_HURD_CLEAR_FILETYPE, &pctx)) { | |
754 | fs->super->s_feature_incompat &= | |
755 | ~EXT2_FEATURE_INCOMPAT_FILETYPE; | |
756 | ext2fs_mark_super_dirty(fs); | |
0cfce7f7 | 757 | fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; |
4ea0a110 TT |
758 | } |
759 | } | |
80bfaa3e | 760 | |
7b59f1ef TT |
761 | /* |
762 | * If we have any of the compatibility flags set, we need to have a | |
763 | * revision 1 filesystem. Most kernels will not check the flags on | |
764 | * a rev 0 filesystem and we may have corruption issues because of | |
765 | * the incompatible changes to the filesystem. | |
766 | */ | |
767 | if (!(ctx->options & E2F_OPT_READONLY) && | |
768 | fs->super->s_rev_level == EXT2_GOOD_OLD_REV && | |
769 | (fs->super->s_feature_compat || | |
770 | fs->super->s_feature_ro_compat || | |
771 | fs->super->s_feature_incompat) && | |
772 | fix_problem(ctx, PR_0_FS_REV_LEVEL, &pctx)) { | |
a917d1cc | 773 | ext2fs_update_dynamic_rev(fs); |
7b59f1ef | 774 | ext2fs_mark_super_dirty(fs); |
0cfce7f7 | 775 | fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; |
7b59f1ef TT |
776 | } |
777 | ||
80bfaa3e TT |
778 | /* |
779 | * Clean up any orphan inodes, if present. | |
780 | */ | |
781 | if (!(ctx->options & E2F_OPT_READONLY) && release_orphan_inodes(ctx)) { | |
782 | fs->super->s_state &= ~EXT2_VALID_FS; | |
7b59f1ef | 783 | ext2fs_mark_super_dirty(fs); |
80bfaa3e TT |
784 | } |
785 | ||
60702c26 | 786 | /* |
ba5131f6 TT |
787 | * Unfortunately, due to Windows' unfortunate design decision |
788 | * to configure the hardware clock to tick localtime, instead | |
789 | * of the more proper and less error-prone UTC time, many | |
790 | * users end up in the situation where the system clock is | |
791 | * incorrectly set at the time when e2fsck is run. | |
792 | * | |
793 | * Historically this was usually due to some distributions | |
794 | * having buggy init scripts and/or installers that didn't | |
795 | * correctly detect this case and take appropriate | |
796 | * countermeasures. However, it's still possible, despite the | |
797 | * best efforts of init script and installer authors to not be | |
798 | * able to detect this misconfiguration, usually due to a | |
799 | * buggy or misconfigured virtualization manager or the | |
800 | * installer not having access to a network time server during | |
801 | * the installation process. So by default, we allow the | |
802 | * superblock times to be fudged by up to 24 hours. This can | |
803 | * be disabled by setting options.accept_time_fudge to the | |
804 | * boolean value of false in e2fsck.conf. We also support | |
805 | * options.buggy_init_scripts for backwards compatibility. | |
60702c26 | 806 | */ |
ba5131f6 TT |
807 | profile_get_boolean(ctx->profile, "options", "accept_time_fudge", |
808 | 0, 1, &accept_time_fudge); | |
60702c26 | 809 | profile_get_boolean(ctx->profile, "options", "buggy_init_scripts", |
ba5131f6 TT |
810 | 0, accept_time_fudge, &accept_time_fudge); |
811 | ctx->time_fudge = accept_time_fudge ? 86400 : 0; | |
60702c26 | 812 | |
177839e2 TT |
813 | profile_get_boolean(ctx->profile, "options", "broken_system_clock", |
814 | 0, 0, &broken_system_clock); | |
815 | ||
efc6f628 | 816 | /* |
8dceb924 TT |
817 | * Check to see if the superblock last mount time or last |
818 | * write time is in the future. | |
819 | */ | |
177839e2 TT |
820 | if (!broken_system_clock && |
821 | !(ctx->flags & E2F_FLAG_TIME_INSANE) && | |
822 | fs->super->s_mtime > (__u32) ctx->now) { | |
8dceb924 | 823 | pctx.num = fs->super->s_mtime; |
26ea4899 TT |
824 | problem = PR_0_FUTURE_SB_LAST_MOUNT; |
825 | if (fs->super->s_mtime <= (__u32) ctx->now + ctx->time_fudge) | |
826 | problem = PR_0_FUTURE_SB_LAST_MOUNT_FUDGED; | |
827 | if (fix_problem(ctx, problem, &pctx)) { | |
8dceb924 TT |
828 | fs->super->s_mtime = ctx->now; |
829 | ext2fs_mark_super_dirty(fs); | |
830 | } | |
831 | } | |
177839e2 TT |
832 | if (!broken_system_clock && |
833 | !(ctx->flags & E2F_FLAG_TIME_INSANE) && | |
834 | fs->super->s_wtime > (__u32) ctx->now) { | |
8dceb924 | 835 | pctx.num = fs->super->s_wtime; |
fe26a55a | 836 | problem = PR_0_FUTURE_SB_LAST_WRITE; |
26ea4899 | 837 | if (fs->super->s_wtime <= (__u32) ctx->now + ctx->time_fudge) |
61a9d2b3 | 838 | problem = PR_0_FUTURE_SB_LAST_WRITE_FUDGED; |
26ea4899 | 839 | if (fix_problem(ctx, problem, &pctx)) { |
8dceb924 TT |
840 | fs->super->s_wtime = ctx->now; |
841 | ext2fs_mark_super_dirty(fs); | |
842 | } | |
843 | } | |
844 | ||
773fd8a1 TT |
845 | /* |
846 | * Move the ext3 journal file, if necessary. | |
847 | */ | |
848 | e2fsck_move_ext3_journal(ctx); | |
b1c52b26 TT |
849 | |
850 | /* | |
851 | * Fix journal hint, if necessary | |
852 | */ | |
853 | e2fsck_fix_ext3_journal_hint(ctx); | |
854 | ||
f77704e4 TT |
855 | /* |
856 | * Add dirhash hint if necessary | |
857 | */ | |
858 | e2fsck_fix_dirhash_hint(ctx); | |
859 | ||
1b6bf175 TT |
860 | return; |
861 | } | |
0c37f456 TT |
862 | |
863 | /* | |
864 | * Check to see if we should backup the master sb to the backup super | |
a8cde73a | 865 | * blocks. Returns non-zero if the sb should be backed up. |
0c37f456 | 866 | */ |
a8cde73a TT |
867 | |
868 | /* | |
869 | * A few flags are set on the fly by the kernel, but only in the | |
870 | * primary superblock. This is actually a bad thing, and we should | |
871 | * try to discourage it in the future. In particular, for the newer | |
872 | * ext4 files, especially EXT4_FEATURE_RO_COMPAT_DIR_NLINK and | |
873 | * EXT3_FEATURE_INCOMPAT_EXTENTS. So some of these may go away in the | |
d9ff474b ES |
874 | * future. EXT3_FEATURE_INCOMPAT_RECOVER may also get set when |
875 | * copying the primary superblock during online resize. | |
a8cde73a TT |
876 | * |
877 | * The kernel will set EXT2_FEATURE_COMPAT_EXT_ATTR, but | |
878 | * unfortunately, we shouldn't ignore it since if it's not set in the | |
879 | * backup, the extended attributes in the filesystem will be stripped | |
880 | * away. | |
881 | */ | |
882 | #define FEATURE_RO_COMPAT_IGNORE (EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \ | |
883 | EXT4_FEATURE_RO_COMPAT_DIR_NLINK) | |
d9ff474b ES |
884 | #define FEATURE_INCOMPAT_IGNORE (EXT3_FEATURE_INCOMPAT_EXTENTS| \ |
885 | EXT3_FEATURE_INCOMPAT_RECOVER) | |
a8cde73a | 886 | |
0c37f456 TT |
887 | int check_backup_super_block(e2fsck_t ctx) |
888 | { | |
889 | ext2_filsys fs = ctx->fs; | |
0c37f456 TT |
890 | errcode_t retval; |
891 | dgrp_t g; | |
6dc64392 | 892 | blk64_t sb; |
0c37f456 | 893 | int ret = 0; |
982dd30c TT |
894 | char buf[SUPERBLOCK_SIZE]; |
895 | struct ext2_super_block *backup_sb; | |
0c37f456 TT |
896 | |
897 | /* | |
898 | * If we are already writing out the backup blocks, then we | |
899 | * don't need to test. Also, if the filesystem is invalid, or | |
900 | * the check was aborted or cancelled, we also don't want to | |
901 | * do the backup. If the filesystem was opened read-only then | |
902 | * we can't do the backup. | |
903 | */ | |
904 | if (((fs->flags & EXT2_FLAG_MASTER_SB_ONLY) == 0) || | |
905 | !ext2fs_test_valid(fs) || | |
906 | (fs->super->s_state & EXT2_ERROR_FS) || | |
907 | (ctx->flags & (E2F_FLAG_ABORT | E2F_FLAG_CANCEL)) || | |
908 | (ctx->options & E2F_OPT_READONLY)) | |
909 | return 0; | |
910 | ||
911 | for (g = 1; g < fs->group_desc_count; g++) { | |
912 | if (!ext2fs_bg_has_super(fs, g)) | |
913 | continue; | |
914 | ||
915 | sb = fs->super->s_first_data_block + | |
916 | (g * fs->super->s_blocks_per_group); | |
917 | ||
982dd30c TT |
918 | retval = io_channel_read_blk(fs->io, sb, -SUPERBLOCK_SIZE, |
919 | buf); | |
920 | if (retval) | |
921 | continue; | |
922 | backup_sb = (struct ext2_super_block *) buf; | |
923 | #ifdef WORDS_BIGENDIAN | |
924 | ext2fs_swap_super(backup_sb); | |
925 | #endif | |
926 | if ((backup_sb->s_magic != EXT2_SUPER_MAGIC) || | |
927 | (backup_sb->s_rev_level > EXT2_LIB_CURRENT_REV) || | |
928 | ((backup_sb->s_log_block_size + EXT2_MIN_BLOCK_LOG_SIZE) > | |
929 | EXT2_MAX_BLOCK_LOG_SIZE) || | |
930 | (EXT2_INODE_SIZE(backup_sb) < EXT2_GOOD_OLD_INODE_SIZE)) | |
0c37f456 | 931 | continue; |
0c37f456 | 932 | |
a8cde73a | 933 | #define SUPER_INCOMPAT_DIFFERENT(x) \ |
982dd30c TT |
934 | ((fs->super->x & ~FEATURE_INCOMPAT_IGNORE) != \ |
935 | (backup_sb->x & ~FEATURE_INCOMPAT_IGNORE)) | |
a8cde73a | 936 | #define SUPER_RO_COMPAT_DIFFERENT(x) \ |
982dd30c TT |
937 | ((fs->super->x & ~FEATURE_RO_COMPAT_IGNORE) != \ |
938 | (backup_sb->x & ~FEATURE_RO_COMPAT_IGNORE)) | |
a8cde73a | 939 | #define SUPER_DIFFERENT(x) \ |
982dd30c | 940 | (fs->super->x != backup_sb->x) |
a8cde73a | 941 | |
0c37f456 | 942 | if (SUPER_DIFFERENT(s_feature_compat) || |
a8cde73a TT |
943 | SUPER_INCOMPAT_DIFFERENT(s_feature_incompat) || |
944 | SUPER_RO_COMPAT_DIFFERENT(s_feature_ro_compat) || | |
0c37f456 TT |
945 | SUPER_DIFFERENT(s_blocks_count) || |
946 | SUPER_DIFFERENT(s_inodes_count) || | |
982dd30c | 947 | memcmp(fs->super->s_uuid, backup_sb->s_uuid, |
0c37f456 TT |
948 | sizeof(fs->super->s_uuid))) |
949 | ret = 1; | |
0c37f456 TT |
950 | break; |
951 | } | |
952 | return ret; | |
953 | } |