]> git.ipfire.org Git - thirdparty/e2fsprogs.git/blob - misc/tune2fs.c
projects / thirdparty / e2fsprogs.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'maint' into next
[thirdparty/e2fsprogs.git] / misc / tune2fs.c
1 /*
2 * tune2fs.c - Change the file system parameters on an ext2 file system
3 *
4 * Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
5 * Laboratoire MASI, Institut Blaise Pascal
6 * Universite Pierre et Marie Curie (Paris VI)
7 *
8 * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
9 *
10 * %Begin-Header%
11 * This file may be redistributed under the terms of the GNU Public
12 * License.
13 * %End-Header%
14 */
15
16 /*
17 * History:
18 * 93/06/01 - Creation
19 * 93/10/31 - Added the -c option to change the maximal mount counts
20 * 93/12/14 - Added -l flag to list contents of superblock
21 * M.J.E. Mol (marcel@duteca.et.tudelft.nl)
22 * F.W. ten Wolde (franky@duteca.et.tudelft.nl)
23 * 93/12/29 - Added the -e option to change errors behavior
24 * 94/02/27 - Ported to use the ext2fs library
25 * 94/03/06 - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
26 */
27
28 #define _XOPEN_SOURCE 600 /* for inclusion of strptime() */
29 #include "config.h"
30 #include <fcntl.h>
31 #include <grp.h>
32 #ifdef HAVE_GETOPT_H
33 #include <getopt.h>
34 #else
35 extern char *optarg;
36 extern int optind;
37 #endif
38 #include <pwd.h>
39 #include <stdio.h>
40 #ifdef HAVE_STDLIB_H
41 #include <stdlib.h>
42 #endif
43 #ifdef HAVE_STRINGS_H
44 #include <strings.h> /* for strcasecmp() */
45 #else
46 #define _BSD_SOURCE /* for inclusion of strcasecmp() via <string.h> */
47 #define _DEFAULT_SOURCE /* since glibc 2.20 _BSD_SOURCE is deprecated */
48 #endif
49 #include <string.h>
50 #include <time.h>
51 #include <unistd.h>
52 #include <sys/types.h>
53 #include <libgen.h>
54 #include <limits.h>
55
56 #include "ext2fs/ext2_fs.h"
57 #include "ext2fs/ext2fs.h"
58 #include "ext2fs/kernel-jbd.h"
59 #include "et/com_err.h"
60 #include "support/plausible.h"
61 #include "support/quotaio.h"
62 #include "uuid/uuid.h"
63 #include "e2p/e2p.h"
64 #include "util.h"
65 #include "blkid/blkid.h"
66
67 #include "../version.h"
68 #include "support/nls-enable.h"
69
70 #define QOPT_ENABLE (1)
71 #define QOPT_DISABLE (-1)
72
73 extern int ask_yn(const char *string, int def);
74
75 const char *program_name = "tune2fs";
76 char *device_name;
77 char *new_label, *new_last_mounted, *new_UUID;
78 char *io_options;
79 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
80 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
81 static int I_flag;
82 static int clear_mmp;
83 static time_t last_check_time;
84 static int print_label;
85 static int max_mount_count, mount_count, mount_flags;
86 static unsigned long interval;
87 static blk64_t reserved_blocks;
88 static double reserved_ratio;
89 static unsigned long resgid, resuid;
90 static unsigned short errors;
91 static int open_flag;
92 static char *features_cmd;
93 static char *mntopts_cmd;
94 static int stride, stripe_width;
95 static int stride_set, stripe_width_set;
96 static char *extended_cmd;
97 static unsigned long new_inode_size;
98 static char *ext_mount_opts;
99 static int quota_enable[MAXQUOTAS];
100 static int rewrite_checksums;
101 static int feature_64bit;
102 static int fsck_requested;
103 static char *undo_file;
104
105 int journal_size, journal_flags;
106 char *journal_device;
107 static blk64_t journal_location = ~0LL;
108
109 static struct list_head blk_move_list;
110
111 struct blk_move {
112 struct list_head list;
113 blk64_t old_loc;
114 blk64_t new_loc;
115 };
116
117 errcode_t ext2fs_run_ext3_journal(ext2_filsys *fs);
118
119 static const char *fsck_explain = N_("\nThis operation requires a freshly checked filesystem.\n");
120
121 static const char *please_fsck = N_("Please run e2fsck -f on the filesystem.\n");
122 static const char *please_dir_fsck =
123 N_("Please run e2fsck -fD on the filesystem.\n");
124
125 #ifdef CONFIG_BUILD_FINDFS
126 void do_findfs(int argc, char **argv);
127 #endif
128
129 #ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jbd-debug */
130 int journal_enable_debug = -1;
131 #endif
132
133 static void usage(void)
134 {
135 fprintf(stderr,
136 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] [-f] "
137 "[-g group]\n"
138 "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
139 "\t[-m reserved_blocks_percent] [-o [^]mount_options[,...]]\n"
140 "\t[-p mmp_update_interval] [-r reserved_blocks_count] "
141 "[-u user]\n"
142 "\t[-C mount_count] [-L volume_label] [-M last_mounted_dir]\n"
143 "\t[-O [^]feature[,...]] [-Q quota_options]\n"
144 "\t[-E extended-option[,...]] [-T last_check_time] "
145 "[-U UUID]\n\t[-I new_inode_size] [-z undo_file] device\n"),
146 program_name);
147 exit(1);
148 }
149
150 static __u32 ok_features[3] = {
151 /* Compat */
152 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
153 EXT2_FEATURE_COMPAT_DIR_INDEX,
154 /* Incompat */
155 EXT2_FEATURE_INCOMPAT_FILETYPE |
156 EXT3_FEATURE_INCOMPAT_EXTENTS |
157 EXT4_FEATURE_INCOMPAT_FLEX_BG |
158 EXT4_FEATURE_INCOMPAT_EA_INODE|
159 EXT4_FEATURE_INCOMPAT_MMP |
160 EXT4_FEATURE_INCOMPAT_64BIT |
161 EXT4_FEATURE_INCOMPAT_ENCRYPT |
162 EXT4_FEATURE_INCOMPAT_CSUM_SEED |
163 EXT4_FEATURE_INCOMPAT_LARGEDIR,
164 /* R/O compat */
165 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
166 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
167 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
168 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
169 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
170 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
171 EXT4_FEATURE_RO_COMPAT_QUOTA |
172 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
173 EXT4_FEATURE_RO_COMPAT_READONLY |
174 EXT4_FEATURE_RO_COMPAT_PROJECT
175 };
176
177 static __u32 clear_ok_features[3] = {
178 /* Compat */
179 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
180 EXT2_FEATURE_COMPAT_RESIZE_INODE |
181 EXT2_FEATURE_COMPAT_DIR_INDEX,
182 /* Incompat */
183 EXT2_FEATURE_INCOMPAT_FILETYPE |
184 EXT4_FEATURE_INCOMPAT_FLEX_BG |
185 EXT4_FEATURE_INCOMPAT_MMP |
186 EXT4_FEATURE_INCOMPAT_64BIT |
187 EXT4_FEATURE_INCOMPAT_CSUM_SEED,
188 /* R/O compat */
189 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
190 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
191 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
192 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
193 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
194 EXT4_FEATURE_RO_COMPAT_QUOTA |
195 EXT4_FEATURE_RO_COMPAT_PROJECT |
196 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
197 EXT4_FEATURE_RO_COMPAT_READONLY
198 };
199
200 /**
201 * Try to get journal super block if any
202 */
203 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
204 {
205 int retval;
206 journal_superblock_t *jsb;
207
208 if (!ext2fs_has_feature_journal_dev(jfs->super)) {
209 return EXT2_ET_UNSUPP_FEATURE;
210 }
211
212 /* Get the journal superblock */
213 if ((retval = io_channel_read_blk64(jfs->io,
214 ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
215 com_err(program_name, retval, "%s",
216 _("while reading journal superblock"));
217 return retval;
218 }
219
220 jsb = (journal_superblock_t *) buf;
221 if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
222 (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
223 fputs(_("Journal superblock not found!\n"), stderr);
224 return EXT2_ET_BAD_MAGIC;
225 }
226
227 return 0;
228 }
229
230 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JFS_USERS_SIZE],
231 int nr_users)
232 {
233 int i;
234 for (i = 0; i < nr_users; i++) {
235 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
236 return &s_users[i * UUID_SIZE];
237 }
238
239 return NULL;
240 }
241
242 /*
243 * Remove an external journal from the filesystem
244 */
245 static int remove_journal_device(ext2_filsys fs)
246 {
247 char *journal_path;
248 ext2_filsys jfs;
249 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
250 journal_superblock_t *jsb;
251 int i, nr_users;
252 errcode_t retval;
253 int commit_remove_journal = 0;
254 io_manager io_ptr;
255
256 if (f_flag)
257 commit_remove_journal = 1; /* force removal even if error */
258
259 uuid_unparse(fs->super->s_journal_uuid, buf);
260 journal_path = blkid_get_devname(NULL, "UUID", buf);
261
262 if (!journal_path) {
263 journal_path =
264 ext2fs_find_block_device(fs->super->s_journal_dev);
265 if (!journal_path)
266 goto no_valid_journal;
267 }
268
269 #ifdef CONFIG_TESTIO_DEBUG
270 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
271 io_ptr = test_io_manager;
272 test_io_backing_manager = unix_io_manager;
273 } else
274 #endif
275 io_ptr = unix_io_manager;
276 retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
277 EXT2_FLAG_JOURNAL_DEV_OK, 0,
278 fs->blocksize, io_ptr, &jfs);
279 if (retval) {
280 com_err(program_name, retval, "%s",
281 _("while trying to open external journal"));
282 goto no_valid_journal;
283 }
284
285 if ((retval = get_journal_sb(jfs, buf))) {
286 if (retval == EXT2_ET_UNSUPP_FEATURE)
287 fprintf(stderr, _("%s is not a journal device.\n"),
288 journal_path);
289 goto no_valid_journal;
290 }
291
292 jsb = (journal_superblock_t *) buf;
293 /* Find the filesystem UUID */
294 nr_users = ntohl(jsb->s_nr_users);
295
296 if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
297 fputs(_("Filesystem's UUID not found on journal device.\n"),
298 stderr);
299 commit_remove_journal = 1;
300 goto no_valid_journal;
301 }
302 nr_users--;
303 for (i = 0; i < nr_users; i++)
304 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
305 jsb->s_nr_users = htonl(nr_users);
306
307 /* Write back the journal superblock */
308 retval = io_channel_write_blk64(jfs->io,
309 ext2fs_journal_sb_start(fs->blocksize),
310 -SUPERBLOCK_SIZE, buf);
311 if (retval) {
312 com_err(program_name, retval,
313 "while writing journal superblock.");
314 goto no_valid_journal;
315 }
316
317 commit_remove_journal = 1;
318
319 no_valid_journal:
320 if (commit_remove_journal == 0) {
321 fputs(_("Cannot locate journal device. It was NOT removed\n"
322 "Use -f option to remove missing journal device.\n"),
323 stderr);
324 return 1;
325 }
326 fs->super->s_journal_dev = 0;
327 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
328 uuid_clear(fs->super->s_journal_uuid);
329 ext2fs_mark_super_dirty(fs);
330 fputs(_("Journal removed\n"), stdout);
331 free(journal_path);
332
333 return 0;
334 }
335
336 /* Helper function for remove_journal_inode */
337 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
338 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
339 blk64_t ref_block EXT2FS_ATTR((unused)),
340 int ref_offset EXT2FS_ATTR((unused)),
341 void *private EXT2FS_ATTR((unused)))
342 {
343 blk64_t block;
344 int group;
345
346 block = *blocknr;
347 ext2fs_unmark_block_bitmap2(fs->block_map, block);
348 group = ext2fs_group_of_blk2(fs, block);
349 ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
350 ext2fs_group_desc_csum_set(fs, group);
351 ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
352 return 0;
353 }
354
355 /*
356 * Remove the journal inode from the filesystem
357 */
358 static errcode_t remove_journal_inode(ext2_filsys fs)
359 {
360 struct ext2_inode inode;
361 errcode_t retval;
362 ino_t ino = fs->super->s_journal_inum;
363
364 retval = ext2fs_read_inode(fs, ino, &inode);
365 if (retval) {
366 com_err(program_name, retval, "%s",
367 _("while reading journal inode"));
368 return retval;
369 }
370 if (ino == EXT2_JOURNAL_INO) {
371 retval = ext2fs_read_bitmaps(fs);
372 if (retval) {
373 com_err(program_name, retval, "%s",
374 _("while reading bitmaps"));
375 return retval;
376 }
377 retval = ext2fs_block_iterate3(fs, ino,
378 BLOCK_FLAG_READ_ONLY, NULL,
379 release_blocks_proc, NULL);
380 if (retval) {
381 com_err(program_name, retval, "%s",
382 _("while clearing journal inode"));
383 return retval;
384 }
385 memset(&inode, 0, sizeof(inode));
386 ext2fs_mark_bb_dirty(fs);
387 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
388 } else
389 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
390 retval = ext2fs_write_inode(fs, ino, &inode);
391 if (retval) {
392 com_err(program_name, retval, "%s",
393 _("while writing journal inode"));
394 return retval;
395 }
396 fs->super->s_journal_inum = 0;
397 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
398 ext2fs_mark_super_dirty(fs);
399
400 return 0;
401 }
402
403 /*
404 * Update the default mount options
405 */
406 static int update_mntopts(ext2_filsys fs, char *mntopts)
407 {
408 struct ext2_super_block *sb = fs->super;
409
410 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
411 fprintf(stderr, _("Invalid mount option set: %s\n"),
412 mntopts);
413 return 1;
414 }
415 ext2fs_mark_super_dirty(fs);
416
417 return 0;
418 }
419
420 static void check_fsck_needed(ext2_filsys fs, const char *prompt)
421 {
422 /* Refuse to modify anything but a freshly checked valid filesystem. */
423 if (!(fs->super->s_state & EXT2_VALID_FS) ||
424 (fs->super->s_state & EXT2_ERROR_FS) ||
425 (fs->super->s_lastcheck < fs->super->s_mtime)) {
426 puts(_(fsck_explain));
427 puts(_(please_fsck));
428 if (mount_flags & EXT2_MF_READONLY)
429 printf("%s", _("(and reboot afterwards!)\n"));
430 exit(1);
431 }
432
433 /* Give the admin a few seconds to bail out of a dangerous op. */
434 if (!getenv("TUNE2FS_FORCE_PROMPT") && (!isatty(0) || !isatty(1)))
435 return;
436
437 puts(prompt);
438 proceed_question(5);
439 }
440
441 static void request_dir_fsck_afterwards(ext2_filsys fs)
442 {
443 static int requested;
444
445 if (requested++)
446 return;
447 fsck_requested++;
448 fs->super->s_state &= ~EXT2_VALID_FS;
449 puts(_(fsck_explain));
450 puts(_(please_dir_fsck));
451 if (mount_flags & EXT2_MF_READONLY)
452 printf("%s", _("(and reboot afterwards!)\n"));
453 }
454
455 static void request_fsck_afterwards(ext2_filsys fs)
456 {
457 static int requested = 0;
458
459 if (requested++)
460 return;
461 fsck_requested++;
462 fs->super->s_state &= ~EXT2_VALID_FS;
463 printf("\n%s\n", _(please_fsck));
464 if (mount_flags & EXT2_MF_READONLY)
465 printf("%s", _("(and reboot afterwards!)\n"));
466 }
467
468 static void convert_64bit(ext2_filsys fs, int direction)
469 {
470 /*
471 * Is resize2fs going to demand a fsck run? Might as well tell the
472 * user now.
473 */
474 if (!fsck_requested &&
475 ((fs->super->s_state & EXT2_ERROR_FS) ||
476 !(fs->super->s_state & EXT2_VALID_FS) ||
477 fs->super->s_lastcheck < fs->super->s_mtime))
478 request_fsck_afterwards(fs);
479 if (fsck_requested)
480 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
481 direction > 0 ? "-b" : "-s", fs->device_name);
482 else
483 fprintf(stderr, _("Please run `resize2fs %s %s"),
484 direction > 0 ? "-b" : "-s", fs->device_name);
485
486 if (undo_file)
487 fprintf(stderr, _(" -z \"%s\""), undo_file);
488 if (direction > 0)
489 fprintf(stderr, _("' to enable 64-bit mode.\n"));
490 else
491 fprintf(stderr, _("' to disable 64-bit mode.\n"));
492 }
493
494 /* Rewrite extents */
495 static errcode_t rewrite_extents(ext2_filsys fs, ext2_ino_t ino,
496 struct ext2_inode *inode)
497 {
498 ext2_extent_handle_t handle;
499 struct ext2fs_extent extent;
500 errcode_t errcode;
501 struct ext2_extent_info info;
502
503 if (!(inode->i_flags & EXT4_EXTENTS_FL) ||
504 !ext2fs_has_feature_metadata_csum(fs->super))
505 return 0;
506
507 errcode = ext2fs_extent_open(fs, ino, &handle);
508 if (errcode)
509 return errcode;
510
511 errcode = ext2fs_extent_get(handle, EXT2_EXTENT_ROOT, &extent);
512 if (errcode)
513 goto out;
514
515 do {
516 errcode = ext2fs_extent_get_info(handle, &info);
517 if (errcode)
518 break;
519
520 /*
521 * If this is the first extent in an extent block that we
522 * haven't visited, rewrite the extent to force the ETB
523 * checksum to be rewritten.
524 */
525 if (info.curr_entry == 1 && info.curr_level != 0 &&
526 !(extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)) {
527 errcode = ext2fs_extent_replace(handle, 0, &extent);
528 if (errcode)
529 break;
530 }
531
532 /* Skip to the end of a block of leaf nodes */
533 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
534 errcode = ext2fs_extent_get(handle,
535 EXT2_EXTENT_LAST_SIB,
536 &extent);
537 if (errcode)
538 break;
539 }
540
541 errcode = ext2fs_extent_get(handle, EXT2_EXTENT_NEXT, &extent);
542 } while (errcode == 0);
543
544 out:
545 /* Ok if we run off the end */
546 if (errcode == EXT2_ET_EXTENT_NO_NEXT)
547 errcode = 0;
548 ext2fs_extent_free(handle);
549 return errcode;
550 }
551
552 /*
553 * Rewrite directory blocks with checksums
554 */
555 struct rewrite_dir_context {
556 char *buf;
557 errcode_t errcode;
558 ext2_ino_t dir;
559 int is_htree;
560 };
561
562 static int rewrite_dir_block(ext2_filsys fs,
563 blk64_t *blocknr,
564 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
565 blk64_t ref_block EXT2FS_ATTR((unused)),
566 int ref_offset EXT2FS_ATTR((unused)),
567 void *priv_data)
568 {
569 struct ext2_dx_countlimit *dcl = NULL;
570 struct rewrite_dir_context *ctx = priv_data;
571 int dcl_offset, changed = 0;
572
573 ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
574 ctx->dir);
575 if (ctx->errcode)
576 return BLOCK_ABORT;
577
578 /* if htree node... */
579 if (ctx->is_htree)
580 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
581 &dcl, &dcl_offset);
582 if (dcl) {
583 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
584 /* Ensure limit is the max size */
585 int max_entries = (fs->blocksize - dcl_offset) /
586 sizeof(struct ext2_dx_entry);
587 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
588 changed = 1;
589 dcl->limit = ext2fs_cpu_to_le16(max_entries);
590 }
591 } else {
592 /* If htree block is full then rebuild the dir */
593 if (ext2fs_le16_to_cpu(dcl->count) ==
594 ext2fs_le16_to_cpu(dcl->limit)) {
595 request_dir_fsck_afterwards(fs);
596 return 0;
597 }
598 /*
599 * Ensure dcl->limit is small enough to leave room for
600 * the checksum tail.
601 */
602 int max_entries = (fs->blocksize - (dcl_offset +
603 sizeof(struct ext2_dx_tail))) /
604 sizeof(struct ext2_dx_entry);
605 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
606 dcl->limit = ext2fs_cpu_to_le16(max_entries);
607 /* Always rewrite checksum */
608 changed = 1;
609 }
610 } else {
611 unsigned int rec_len, name_size;
612 char *top = ctx->buf + fs->blocksize;
613 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
614 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
615
616 /* Find last and penultimate dirent */
617 while ((char *)de < top) {
618 penultimate_de = last_de;
619 last_de = de;
620 ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
621 if (!ctx->errcode && !rec_len)
622 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
623 if (ctx->errcode)
624 return BLOCK_ABORT;
625 de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
626 }
627 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
628 if (ctx->errcode)
629 return BLOCK_ABORT;
630 name_size = ext2fs_dirent_name_len(last_de);
631
632 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
633 if (!penultimate_de)
634 return 0;
635 if (last_de->inode ||
636 name_size ||
637 rec_len != sizeof(struct ext2_dir_entry_tail))
638 return 0;
639 /*
640 * The last dirent is unused and the right length to
641 * have stored a checksum. Erase it.
642 */
643 ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
644 &rec_len);
645 if (!rec_len)
646 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
647 if (ctx->errcode)
648 return BLOCK_ABORT;
649 ext2fs_set_rec_len(fs, rec_len +
650 sizeof(struct ext2_dir_entry_tail),
651 penultimate_de);
652 changed = 1;
653 } else {
654 unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
655 struct ext2_dir_entry_tail *t;
656
657 /*
658 * If the last dirent looks like the tail, just update
659 * the checksum.
660 */
661 if (!last_de->inode &&
662 rec_len == csum_size) {
663 t = (struct ext2_dir_entry_tail *)last_de;
664 t->det_reserved_name_len =
665 EXT2_DIR_NAME_LEN_CSUM;
666 changed = 1;
667 goto out;
668 }
669 if (name_size & 3)
670 name_size = (name_size & ~3) + 4;
671 /* If there's not enough space for the tail, e2fsck */
672 if (rec_len <= (8 + name_size + csum_size)) {
673 request_dir_fsck_afterwards(fs);
674 return 0;
675 }
676 /* Shorten that last de and insert the tail */
677 ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
678 t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
679 ext2fs_initialize_dirent_tail(fs, t);
680
681 /* Always update checksum */
682 changed = 1;
683 }
684 }
685
686 out:
687 if (!changed)
688 return 0;
689
690 ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
691 0, ctx->dir);
692 if (ctx->errcode)
693 return BLOCK_ABORT;
694
695 return 0;
696 }
697
698 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
699 struct ext2_inode *inode)
700 {
701 errcode_t retval;
702 struct rewrite_dir_context ctx;
703
704 retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
705 if (retval)
706 return retval;
707
708 ctx.is_htree = (inode->i_flags & EXT2_INDEX_FL);
709 ctx.dir = dir;
710 ctx.errcode = 0;
711 retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
712 BLOCK_FLAG_DATA_ONLY,
713 0, rewrite_dir_block, &ctx);
714
715 ext2fs_free_mem(&ctx.buf);
716 if (retval)
717 return retval;
718
719 return ctx.errcode;
720 }
721
722 /*
723 * Context information that does not change across rewrite_one_inode()
724 * invocations.
725 */
726 struct rewrite_context {
727 ext2_filsys fs;
728 struct ext2_inode *zero_inode;
729 char *ea_buf;
730 int inode_size;
731 };
732
733 #define fatal_err(code, args...) \
734 do { \
735 com_err(__func__, code, args); \
736 exit(1); \
737 } while (0);
738
739 static void update_ea_inode_hash(struct rewrite_context *ctx, ext2_ino_t ino,
740 struct ext2_inode *inode)
741 {
742 errcode_t retval;
743 ext2_file_t file;
744 __u32 hash;
745
746 retval = ext2fs_file_open(ctx->fs, ino, 0, &file);
747 if (retval)
748 fatal_err(retval, "open ea_inode");
749 retval = ext2fs_file_read(file, ctx->ea_buf, inode->i_size,
750 NULL);
751 if (retval)
752 fatal_err(retval, "read ea_inode");
753 retval = ext2fs_file_close(file);
754 if (retval)
755 fatal_err(retval, "close ea_inode");
756
757 hash = ext2fs_crc32c_le(ctx->fs->csum_seed, ctx->ea_buf, inode->i_size);
758 ext2fs_set_ea_inode_hash(inode, hash);
759 }
760
761 static int update_xattr_entry_hashes(ext2_filsys fs,
762 struct ext2_ext_attr_entry *entry,
763 struct ext2_ext_attr_entry *end)
764 {
765 int modified = 0;
766 errcode_t retval;
767
768 while (entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry)) {
769 if (entry->e_value_inum) {
770 retval = ext2fs_ext_attr_hash_entry2(fs, entry, NULL,
771 &entry->e_hash);
772 if (retval)
773 fatal_err(retval, "hash ea_inode entry");
774 modified = 1;
775 }
776 entry = EXT2_EXT_ATTR_NEXT(entry);
777 }
778 return modified;
779 }
780
781 static void update_inline_xattr_hashes(struct rewrite_context *ctx,
782 struct ext2_inode_large *inode)
783 {
784 struct ext2_ext_attr_entry *start, *end;
785 __u32 *ea_magic;
786
787 if (inode->i_extra_isize == 0)
788 return;
789
790 if (inode->i_extra_isize & 3 ||
791 inode->i_extra_isize > ctx->inode_size - EXT2_GOOD_OLD_INODE_SIZE)
792 fatal_err(EXT2_ET_INODE_CORRUPTED, "bad i_extra_isize")
793
794 ea_magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
795 inode->i_extra_isize);
796 if (*ea_magic != EXT2_EXT_ATTR_MAGIC)
797 return;
798
799 start = (struct ext2_ext_attr_entry *)(ea_magic + 1);
800 end = (struct ext2_ext_attr_entry *)((char *)inode + ctx->inode_size);
801
802 update_xattr_entry_hashes(ctx->fs, start, end);
803 }
804
805 static void update_block_xattr_hashes(struct rewrite_context *ctx,
806 void *block_buf)
807 {
808 struct ext2_ext_attr_header *header;
809 struct ext2_ext_attr_entry *start, *end;
810
811 header = (struct ext2_ext_attr_header *)block_buf;
812 if (header->h_magic != EXT2_EXT_ATTR_MAGIC)
813 return;
814
815 start = (struct ext2_ext_attr_entry *)(header+1);
816 end = (struct ext2_ext_attr_entry *)(block_buf + ctx->fs->blocksize);
817
818 if (update_xattr_entry_hashes(ctx->fs, start, end))
819 ext2fs_ext_attr_block_rehash(header, end);
820 }
821
822 static void rewrite_one_inode(struct rewrite_context *ctx, ext2_ino_t ino,
823 struct ext2_inode *inode)
824 {
825 blk64_t file_acl_block;
826 errcode_t retval;
827
828 if (!ext2fs_test_inode_bitmap2(ctx->fs->inode_map, ino)) {
829 if (!memcmp(inode, ctx->zero_inode, ctx->inode_size))
830 return;
831 memset(inode, 0, ctx->inode_size);
832 }
833
834 if (inode->i_flags & EXT4_EA_INODE_FL)
835 update_ea_inode_hash(ctx, ino, inode);
836
837 if (ctx->inode_size != EXT2_GOOD_OLD_INODE_SIZE)
838 update_inline_xattr_hashes(ctx,
839 (struct ext2_inode_large *)inode);
840
841 retval = ext2fs_write_inode_full(ctx->fs, ino, inode, ctx->inode_size);
842 if (retval)
843 fatal_err(retval, "while writing inode");
844
845 retval = rewrite_extents(ctx->fs, ino, inode);
846 if (retval)
847 fatal_err(retval, "while rewriting extents");
848
849 if (LINUX_S_ISDIR(inode->i_mode) &&
850 ext2fs_inode_has_valid_blocks2(ctx->fs, inode)) {
851 retval = rewrite_directory(ctx->fs, ino, inode);
852 if (retval)
853 fatal_err(retval, "while rewriting directories");
854 }
855
856 file_acl_block = ext2fs_file_acl_block(ctx->fs, inode);
857 if (!file_acl_block)
858 return;
859
860 retval = ext2fs_read_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
861 ino);
862 if (retval)
863 fatal_err(retval, "while rewriting extended attribute");
864
865 update_block_xattr_hashes(ctx, ctx->ea_buf);
866 retval = ext2fs_write_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
867 ino);
868 if (retval)
869 fatal_err(retval, "while rewriting extended attribute");
870 }
871
872 /*
873 * Forcibly set checksums in all inodes.
874 */
875 static void rewrite_inodes(ext2_filsys fs)
876 {
877 ext2_inode_scan scan;
878 errcode_t retval;
879 ext2_ino_t ino;
880 struct ext2_inode *inode;
881 int pass;
882 struct rewrite_context ctx = {
883 .fs = fs,
884 .inode_size = EXT2_INODE_SIZE(fs->super),
885 };
886
887 if (fs->super->s_creator_os == EXT2_OS_HURD)
888 return;
889
890 retval = ext2fs_get_mem(ctx.inode_size, &inode);
891 if (retval)
892 fatal_err(retval, "while allocating memory");
893
894 retval = ext2fs_get_memzero(ctx.inode_size, &ctx.zero_inode);
895 if (retval)
896 fatal_err(retval, "while allocating memory");
897
898 retval = ext2fs_get_mem(64 * 1024, &ctx.ea_buf);
899 if (retval)
900 fatal_err(retval, "while allocating memory");
901
902 /*
903 * Extended attribute inodes have a lookup hash that needs to be
904 * recalculated with the new csum_seed. Other inodes referencing xattr
905 * inodes need this value to be up to date. That's why we do two passes:
906 *
907 * pass 1: update xattr inodes to update their lookup hash as well as
908 * other checksums.
909 *
910 * pass 2: go over other inodes to update their checksums.
911 */
912 if (ext2fs_has_feature_ea_inode(fs->super))
913 pass = 1;
914 else
915 pass = 2;
916 for (;pass <= 2; pass++) {
917 retval = ext2fs_open_inode_scan(fs, 0, &scan);
918 if (retval)
919 fatal_err(retval, "while opening inode scan");
920
921 do {
922 retval = ext2fs_get_next_inode_full(scan, &ino, inode,
923 ctx.inode_size);
924 if (retval)
925 fatal_err(retval, "while getting next inode");
926 if (!ino)
927 break;
928
929 if (((pass == 1) &&
930 (inode->i_flags & EXT4_EA_INODE_FL)) ||
931 ((pass == 2) &&
932 !(inode->i_flags & EXT4_EA_INODE_FL)))
933 rewrite_one_inode(&ctx, ino, inode);
934 } while (ino);
935
936 ext2fs_close_inode_scan(scan);
937 }
938
939 ext2fs_free_mem(&ctx.zero_inode);
940 ext2fs_free_mem(&ctx.ea_buf);
941 ext2fs_free_mem(&inode);
942 }
943
944 static void rewrite_metadata_checksums(ext2_filsys fs)
945 {
946 errcode_t retval;
947 dgrp_t i;
948
949 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
950 ext2fs_init_csum_seed(fs);
951 for (i = 0; i < fs->group_desc_count; i++)
952 ext2fs_group_desc_csum_set(fs, i);
953 retval = ext2fs_read_bitmaps(fs);
954 if (retval)
955 fatal_err(retval, "while reading bitmaps");
956 rewrite_inodes(fs);
957 ext2fs_mark_ib_dirty(fs);
958 ext2fs_mark_bb_dirty(fs);
959 ext2fs_mmp_update2(fs, 1);
960 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
961 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
962 if (ext2fs_has_feature_metadata_csum(fs->super))
963 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
964 else
965 fs->super->s_checksum_type = 0;
966 ext2fs_mark_super_dirty(fs);
967 }
968
969 static void enable_uninit_bg(ext2_filsys fs)
970 {
971 struct ext2_group_desc *gd;
972 dgrp_t i;
973
974 for (i = 0; i < fs->group_desc_count; i++) {
975 gd = ext2fs_group_desc(fs, fs->group_desc, i);
976 gd->bg_itable_unused = 0;
977 gd->bg_flags = EXT2_BG_INODE_ZEROED;
978 ext2fs_group_desc_csum_set(fs, i);
979 }
980 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
981 }
982
983 static errcode_t zero_empty_inodes(ext2_filsys fs)
984 {
985 int length = EXT2_INODE_SIZE(fs->super);
986 struct ext2_inode *inode = NULL;
987 ext2_inode_scan scan;
988 errcode_t retval;
989 ext2_ino_t ino;
990
991 retval = ext2fs_open_inode_scan(fs, 0, &scan);
992 if (retval)
993 goto out;
994
995 retval = ext2fs_get_mem(length, &inode);
996 if (retval)
997 goto out;
998
999 do {
1000 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
1001 if (retval)
1002 goto out;
1003 if (!ino)
1004 break;
1005 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
1006 memset(inode, 0, length);
1007 retval = ext2fs_write_inode_full(fs, ino, inode,
1008 length);
1009 if (retval)
1010 goto out;
1011 }
1012 } while (1);
1013
1014 out:
1015 ext2fs_free_mem(&inode);
1016 ext2fs_close_inode_scan(scan);
1017 return retval;
1018 }
1019
1020 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
1021 {
1022 struct ext2_group_desc *gd;
1023 dgrp_t i;
1024 errcode_t retval;
1025 blk64_t b, c, d;
1026
1027 /* Load bitmaps to ensure that the uninit ones get written out */
1028 fs->super->s_feature_ro_compat |= csum_feature_flag;
1029 retval = ext2fs_read_bitmaps(fs);
1030 fs->super->s_feature_ro_compat &= ~csum_feature_flag;
1031 if (retval) {
1032 com_err("disable_uninit_bg", retval,
1033 "while reading bitmaps");
1034 request_fsck_afterwards(fs);
1035 return retval;
1036 }
1037 ext2fs_mark_ib_dirty(fs);
1038 ext2fs_mark_bb_dirty(fs);
1039
1040 /* If we're only turning off uninit_bg, zero the inodes */
1041 if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
1042 retval = zero_empty_inodes(fs);
1043 if (retval) {
1044 com_err("disable_uninit_bg", retval,
1045 "while zeroing unused inodes");
1046 request_fsck_afterwards(fs);
1047 return retval;
1048 }
1049 }
1050
1051 /* The bbitmap is zeroed; we must mark group metadata blocks in use */
1052 for (i = 0; i < fs->group_desc_count; i++) {
1053 b = ext2fs_block_bitmap_loc(fs, i);
1054 ext2fs_mark_block_bitmap2(fs->block_map, b);
1055 b = ext2fs_inode_bitmap_loc(fs, i);
1056 ext2fs_mark_block_bitmap2(fs->block_map, b);
1057
1058 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
1059 if (retval == 0 && b)
1060 ext2fs_mark_block_bitmap2(fs->block_map, b);
1061 if (retval == 0 && c)
1062 ext2fs_mark_block_bitmap2(fs->block_map, c);
1063 if (retval == 0 && d)
1064 ext2fs_mark_block_bitmap2(fs->block_map, d);
1065 if (retval) {
1066 com_err("disable_uninit_bg", retval,
1067 "while initializing block bitmaps");
1068 request_fsck_afterwards(fs);
1069 }
1070
1071 gd = ext2fs_group_desc(fs, fs->group_desc, i);
1072 gd->bg_itable_unused = 0;
1073 gd->bg_flags = 0;
1074 ext2fs_group_desc_csum_set(fs, i);
1075 }
1076 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1077 ext2fs_mark_super_dirty(fs);
1078
1079 return 0;
1080 }
1081
1082 static void
1083 try_confirm_csum_seed_support(void)
1084 {
1085 if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK))
1086 fputs(_("WARNING: Could not confirm kernel support for "
1087 "metadata_csum_seed.\n This requires Linux >= "
1088 "v4.4.\n"), stderr);
1089 }
1090
1091 /*
1092 * Update the feature set as provided by the user.
1093 */
1094 static int update_feature_set(ext2_filsys fs, char *features)
1095 {
1096 struct ext2_super_block *sb = fs->super;
1097 __u32 old_features[3];
1098 int type_err;
1099 unsigned int mask_err;
1100 errcode_t err;
1101 enum quota_type qtype;
1102
1103 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
1104 ((&sb->s_feature_compat)[(type)] & (mask)))
1105 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
1106 !((&sb->s_feature_compat)[(type)] & (mask)))
1107 #define FEATURE_CHANGED(type, mask) ((mask) & \
1108 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
1109
1110 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
1111 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
1112 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
1113
1114 if (e2p_edit_feature2(features, &sb->s_feature_compat,
1115 ok_features, clear_ok_features,
1116 &type_err, &mask_err)) {
1117 if (!mask_err)
1118 fprintf(stderr,
1119 _("Invalid filesystem option set: %s\n"),
1120 features);
1121 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
1122 fprintf(stderr, _("Clearing filesystem feature '%s' "
1123 "not supported.\n"),
1124 e2p_feature2string(type_err &
1125 E2P_FEATURE_TYPE_MASK,
1126 mask_err));
1127 else
1128 fprintf(stderr, _("Setting filesystem feature '%s' "
1129 "not supported.\n"),
1130 e2p_feature2string(type_err, mask_err));
1131 return 1;
1132 }
1133
1134 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1135 if ((mount_flags & EXT2_MF_MOUNTED) &&
1136 !(mount_flags & EXT2_MF_READONLY)) {
1137 fputs(_("The has_journal feature may only be "
1138 "cleared when the filesystem is\n"
1139 "unmounted or mounted "
1140 "read-only.\n"), stderr);
1141 return 1;
1142 }
1143 if (ext2fs_has_feature_journal_needs_recovery(sb) &&
1144 f_flag < 2) {
1145 fputs(_("The needs_recovery flag is set. "
1146 "Please run e2fsck before clearing\n"
1147 "the has_journal flag.\n"), stderr);
1148 return 1;
1149 }
1150 if (sb->s_journal_inum) {
1151 if (remove_journal_inode(fs))
1152 return 1;
1153 }
1154 if (sb->s_journal_dev) {
1155 if (remove_journal_device(fs))
1156 return 1;
1157 }
1158 }
1159
1160 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1161 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1162 if (ext2fs_has_feature_meta_bg(sb)) {
1163 fputs(_("Setting filesystem feature 'sparse_super' "
1164 "not supported\nfor filesystems with "
1165 "the meta_bg feature enabled.\n"),
1166 stderr);
1167 return 1;
1168 }
1169 }
1170
1171 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1172 int error;
1173
1174 if ((mount_flags & EXT2_MF_MOUNTED) ||
1175 (mount_flags & EXT2_MF_READONLY)) {
1176 fputs(_("The multiple mount protection feature can't\n"
1177 "be set if the filesystem is mounted or\n"
1178 "read-only.\n"), stderr);
1179 return 1;
1180 }
1181
1182 error = ext2fs_mmp_init(fs);
1183 if (error) {
1184 fputs(_("\nError while enabling multiple mount "
1185 "protection feature."), stderr);
1186 return 1;
1187 }
1188
1189 /*
1190 * We want to update group desc with the new free blocks count
1191 */
1192 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1193
1194 printf(_("Multiple mount protection has been enabled "
1195 "with update interval %ds.\n"),
1196 sb->s_mmp_update_interval);
1197 }
1198
1199 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1200 int error;
1201
1202 if (mount_flags & EXT2_MF_READONLY) {
1203 fputs(_("The multiple mount protection feature cannot\n"
1204 "be disabled if the filesystem is readonly.\n"),
1205 stderr);
1206 return 1;
1207 }
1208
1209 error = ext2fs_read_bitmaps(fs);
1210 if (error) {
1211 fputs(_("Error while reading bitmaps\n"), stderr);
1212 return 1;
1213 }
1214
1215 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1216 if (error) {
1217 struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1218
1219 if (error == EXT2_ET_MMP_MAGIC_INVALID)
1220 printf(_("Magic number in MMP block does not "
1221 "match. expected: %x, actual: %x\n"),
1222 EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1223 else
1224 com_err(program_name, error, "%s",
1225 _("while reading MMP block."));
1226 goto mmp_error;
1227 }
1228
1229 /* We need to force out the group descriptors as well */
1230 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1231 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1232 mmp_error:
1233 sb->s_mmp_block = 0;
1234 sb->s_mmp_update_interval = 0;
1235 }
1236
1237 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1238 /*
1239 * If adding a journal flag, let the create journal
1240 * code below handle setting the flag and creating the
1241 * journal. We supply a default size if necessary.
1242 */
1243 if (!journal_size)
1244 journal_size = -1;
1245 ext2fs_clear_feature_journal(sb);
1246 }
1247
1248 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1249 if (!sb->s_def_hash_version)
1250 sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1251 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1252 uuid_generate((unsigned char *) sb->s_hash_seed);
1253 }
1254
1255 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1256 if (ext2fs_check_desc(fs)) {
1257 fputs(_("Clearing the flex_bg flag would "
1258 "cause the the filesystem to be\n"
1259 "inconsistent.\n"), stderr);
1260 return 1;
1261 }
1262 }
1263
1264 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1265 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1266 if ((mount_flags & EXT2_MF_MOUNTED) &&
1267 !(mount_flags & EXT2_MF_READONLY)) {
1268 fputs(_("The huge_file feature may only be "
1269 "cleared when the filesystem is\n"
1270 "unmounted or mounted "
1271 "read-only.\n"), stderr);
1272 return 1;
1273 }
1274 }
1275
1276 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1277 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1278 check_fsck_needed(fs,
1279 _("Enabling checksums could take some time."));
1280 if (mount_flags & EXT2_MF_MOUNTED) {
1281 fputs(_("Cannot enable metadata_csum on a mounted "
1282 "filesystem!\n"), stderr);
1283 exit(1);
1284 }
1285 if (!ext2fs_has_feature_extents(fs->super))
1286 printf("%s",
1287 _("Extents are not enabled. The file extent "
1288 "tree can be checksummed, whereas block maps "
1289 "cannot. Not enabling extents reduces the "
1290 "coverage of metadata checksumming. "
1291 "Re-run with -O extent to rectify.\n"));
1292 if (!ext2fs_has_feature_64bit(fs->super))
1293 printf("%s",
1294 _("64-bit filesystem support is not enabled. "
1295 "The larger fields afforded by this feature "
1296 "enable full-strength checksumming. "
1297 "Run resize2fs -b to rectify.\n"));
1298 rewrite_checksums = 1;
1299 /* metadata_csum supersedes uninit_bg */
1300 ext2fs_clear_feature_gdt_csum(fs->super);
1301
1302 /* if uninit_bg was previously off, rewrite group desc */
1303 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1304 EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1305 enable_uninit_bg(fs);
1306
1307 /*
1308 * Since metadata_csum supersedes uninit_bg, pretend like
1309 * uninit_bg has been off all along.
1310 */
1311 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1312 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1313 }
1314
1315 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1316 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1317 __u32 test_features[3];
1318
1319 check_fsck_needed(fs,
1320 _("Disabling checksums could take some time."));
1321 if (mount_flags & EXT2_MF_MOUNTED) {
1322 fputs(_("Cannot disable metadata_csum on a mounted "
1323 "filesystem!\n"), stderr);
1324 exit(1);
1325 }
1326 rewrite_checksums = 1;
1327
1328 /* Enable uninit_bg unless the user expressly turned it off */
1329 memcpy(test_features, old_features, sizeof(test_features));
1330 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1331 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1332 e2p_edit_feature2(features, test_features, ok_features,
1333 clear_ok_features, NULL, NULL);
1334 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1335 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1336 ext2fs_set_feature_gdt_csum(fs->super);
1337
1338 /*
1339 * If we're turning off metadata_csum and not turning on
1340 * uninit_bg, rewrite group desc.
1341 */
1342 if (!ext2fs_has_feature_gdt_csum(fs->super)) {
1343 err = disable_uninit_bg(fs,
1344 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1345 if (err)
1346 return 1;
1347 } else
1348 /*
1349 * metadata_csum previously provided uninit_bg, so if
1350 * we're also setting the uninit_bg feature bit,
1351 * pretend like it was previously enabled. Checksums
1352 * will be rewritten with crc16 later.
1353 */
1354 old_features[E2P_FEATURE_RO_INCOMPAT] |=
1355 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1356 fs->super->s_checksum_seed = 0;
1357 ext2fs_clear_feature_csum_seed(fs->super);
1358 }
1359
1360 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1361 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1362 /* Do not enable uninit_bg when metadata_csum enabled */
1363 if (ext2fs_has_feature_metadata_csum(fs->super))
1364 ext2fs_clear_feature_gdt_csum(fs->super);
1365 else
1366 enable_uninit_bg(fs);
1367 }
1368
1369 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1370 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1371 err = disable_uninit_bg(fs,
1372 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1373 if (err)
1374 return 1;
1375 }
1376
1377 /*
1378 * We don't actually toggle 64bit; resize2fs does that. But this
1379 * must come after the metadata_csum feature_on so that it won't
1380 * complain about the lack of 64bit.
1381 */
1382 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1383 EXT4_FEATURE_INCOMPAT_64BIT)) {
1384 if (mount_flags & EXT2_MF_MOUNTED) {
1385 fprintf(stderr, _("Cannot enable 64-bit mode "
1386 "while mounted!\n"));
1387 exit(1);
1388 }
1389 ext2fs_clear_feature_64bit(sb);
1390 feature_64bit = 1;
1391 }
1392 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1393 EXT4_FEATURE_INCOMPAT_64BIT)) {
1394 if (mount_flags & EXT2_MF_MOUNTED) {
1395 fprintf(stderr, _("Cannot disable 64-bit mode "
1396 "while mounted!\n"));
1397 exit(1);
1398 }
1399 ext2fs_set_feature_64bit(sb);
1400 feature_64bit = -1;
1401 }
1402
1403 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1404 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1405 /*
1406 * Set the Q_flag here and handle the quota options in the code
1407 * below.
1408 */
1409 if (!Q_flag) {
1410 Q_flag = 1;
1411 /* Enable usr/grp quota by default */
1412 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1413 if (qtype != PRJQUOTA)
1414 quota_enable[qtype] = QOPT_ENABLE;
1415 else
1416 quota_enable[qtype] = QOPT_DISABLE;
1417 }
1418 }
1419 ext2fs_clear_feature_quota(sb);
1420 }
1421
1422 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1423 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1424 if (fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1425 fprintf(stderr, _("Cannot enable project feature; "
1426 "inode size too small.\n"));
1427 exit(1);
1428 }
1429 Q_flag = 1;
1430 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1431 }
1432
1433 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1434 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1435 Q_flag = 1;
1436 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1437 }
1438
1439 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1440 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1441 /*
1442 * Set the Q_flag here and handle the quota options in the code
1443 * below.
1444 */
1445 if (Q_flag)
1446 fputs(_("\nWarning: '^quota' option overrides '-Q'"
1447 "arguments.\n"), stderr);
1448 Q_flag = 1;
1449 /* Disable all quota by default */
1450 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1451 quota_enable[qtype] = QOPT_DISABLE;
1452 }
1453
1454 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1455 fs->super->s_encrypt_algos[0] =
1456 EXT4_ENCRYPTION_MODE_AES_256_XTS;
1457 fs->super->s_encrypt_algos[1] =
1458 EXT4_ENCRYPTION_MODE_AES_256_CTS;
1459 }
1460
1461 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1462 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1463 if (!ext2fs_has_feature_metadata_csum(sb)) {
1464 fputs(_("Setting feature 'metadata_csum_seed' "
1465 "is only supported\non filesystems with "
1466 "the metadata_csum feature enabled.\n"),
1467 stderr);
1468 return 1;
1469 }
1470 try_confirm_csum_seed_support();
1471 fs->super->s_checksum_seed = fs->csum_seed;
1472 }
1473
1474 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1475 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1476 __le32 uuid_seed;
1477
1478 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1479 sizeof(fs->super->s_uuid));
1480 if (fs->super->s_checksum_seed != uuid_seed &&
1481 (mount_flags & EXT2_MF_MOUNTED)) {
1482 fputs(_("UUID has changed since enabling "
1483 "metadata_csum. Filesystem must be unmounted "
1484 "\nto safely rewrite all metadata to "
1485 "match the new UUID.\n"), stderr);
1486 return 1;
1487 }
1488
1489 rewrite_checksums = 1;
1490 }
1491
1492 if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1493 (sb->s_feature_compat || sb->s_feature_ro_compat ||
1494 sb->s_feature_incompat))
1495 ext2fs_update_dynamic_rev(fs);
1496
1497 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1498 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1499 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1500 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1501 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1502 EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1503 FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1504 EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1505 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1506 EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1507 request_fsck_afterwards(fs);
1508
1509 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1510 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1511 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1512 ext2fs_mark_super_dirty(fs);
1513
1514 return 0;
1515 }
1516
1517 /*
1518 * Add a journal to the filesystem.
1519 */
1520 static int add_journal(ext2_filsys fs)
1521 {
1522 unsigned long journal_blocks;
1523 errcode_t retval;
1524 ext2_filsys jfs;
1525 io_manager io_ptr;
1526
1527 if (ext2fs_has_feature_journal(fs->super)) {
1528 fputs(_("The filesystem already has a journal.\n"), stderr);
1529 goto err;
1530 }
1531 if (journal_device) {
1532 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1533 NULL))
1534 proceed_question(-1);
1535 check_mount(journal_device, 0, _("journal"));
1536 #ifdef CONFIG_TESTIO_DEBUG
1537 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1538 io_ptr = test_io_manager;
1539 test_io_backing_manager = unix_io_manager;
1540 } else
1541 #endif
1542 io_ptr = unix_io_manager;
1543 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1544 EXT2_FLAG_JOURNAL_DEV_OK, 0,
1545 fs->blocksize, io_ptr, &jfs);
1546 if (retval) {
1547 com_err(program_name, retval,
1548 _("\n\twhile trying to open journal on %s\n"),
1549 journal_device);
1550 goto err;
1551 }
1552 printf(_("Creating journal on device %s: "),
1553 journal_device);
1554 fflush(stdout);
1555
1556 retval = ext2fs_add_journal_device(fs, jfs);
1557 ext2fs_close_free(&jfs);
1558 if (retval) {
1559 com_err(program_name, retval,
1560 _("while adding filesystem to journal on %s"),
1561 journal_device);
1562 goto err;
1563 }
1564 fputs(_("done\n"), stdout);
1565 } else if (journal_size) {
1566 fputs(_("Creating journal inode: "), stdout);
1567 fflush(stdout);
1568 journal_blocks = figure_journal_size(journal_size, fs);
1569
1570 if (journal_location_string)
1571 journal_location =
1572 parse_num_blocks2(journal_location_string,
1573 fs->super->s_log_block_size);
1574 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
1575 journal_location,
1576 journal_flags);
1577 if (retval) {
1578 fprintf(stderr, "\n");
1579 com_err(program_name, retval, "%s",
1580 _("\n\twhile trying to create journal file"));
1581 return retval;
1582 } else
1583 fputs(_("done\n"), stdout);
1584 /*
1585 * If the filesystem wasn't mounted, we need to force
1586 * the block group descriptors out.
1587 */
1588 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1589 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1590 }
1591 print_check_message(fs->super->s_max_mnt_count,
1592 fs->super->s_checkinterval);
1593 return 0;
1594
1595 err:
1596 free(journal_device);
1597 return 1;
1598 }
1599
1600 static void handle_quota_options(ext2_filsys fs)
1601 {
1602 errcode_t retval;
1603 quota_ctx_t qctx;
1604 ext2_ino_t qf_ino;
1605 enum quota_type qtype;
1606 unsigned int qtype_bits = 0;
1607 int need_dirty = 0;
1608
1609 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1610 if (quota_enable[qtype] != 0)
1611 break;
1612 if (qtype == MAXQUOTAS)
1613 /* Nothing to do. */
1614 return;
1615
1616 if (quota_enable[PRJQUOTA] == QOPT_ENABLE &&
1617 fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1618 fprintf(stderr, _("Cannot enable project quota; "
1619 "inode size too small.\n"));
1620 exit(1);
1621 }
1622
1623 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1624 if (quota_enable[qtype] == QOPT_ENABLE)
1625 qtype_bits |= 1 << qtype;
1626 }
1627
1628 retval = quota_init_context(&qctx, fs, qtype_bits);
1629 if (retval) {
1630 com_err(program_name, retval,
1631 _("while initializing quota context in support library"));
1632 exit(1);
1633 }
1634
1635 if (qtype_bits)
1636 quota_compute_usage(qctx);
1637
1638 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1639 if (quota_enable[qtype] == QOPT_ENABLE &&
1640 *quota_sb_inump(fs->super, qtype) == 0) {
1641 if ((qf_ino = quota_file_exists(fs, qtype)) > 0) {
1642 retval = quota_update_limits(qctx, qf_ino,
1643 qtype);
1644 if (retval) {
1645 com_err(program_name, retval,
1646 _("while updating quota limits (%d)"),
1647 qtype);
1648 exit(1);
1649 }
1650 }
1651 retval = quota_write_inode(qctx, 1 << qtype);
1652 if (retval) {
1653 com_err(program_name, retval,
1654 _("while writing quota file (%d)"),
1655 qtype);
1656 exit(1);
1657 }
1658 /* Enable Quota feature if one of quota enabled */
1659 if (!ext2fs_has_feature_quota(fs->super)) {
1660 ext2fs_set_feature_quota(fs->super);
1661 need_dirty = 1;
1662 }
1663 if (qtype == PRJQUOTA &&
1664 !ext2fs_has_feature_project(fs->super)) {
1665 ext2fs_set_feature_project(fs->super);
1666 need_dirty = 1;
1667 }
1668 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1669 retval = quota_remove_inode(fs, qtype);
1670 if (retval) {
1671 com_err(program_name, retval,
1672 _("while removing quota file (%d)"),
1673 qtype);
1674 exit(1);
1675 }
1676 if (qtype == PRJQUOTA) {
1677 ext2fs_clear_feature_project(fs->super);
1678 need_dirty = 1;
1679 }
1680 }
1681 }
1682
1683 quota_release_context(&qctx);
1684 /* Clear Quota feature if all quota types disabled. */
1685 if (!qtype_bits) {
1686 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1687 if (*quota_sb_inump(fs->super, qtype))
1688 break;
1689 if (qtype == MAXQUOTAS) {
1690 ext2fs_clear_feature_quota(fs->super);
1691 need_dirty = 1;
1692 }
1693
1694 }
1695 if (need_dirty)
1696 ext2fs_mark_super_dirty(fs);
1697 return;
1698 }
1699
1700 static int option_handle_function(char *token)
1701 {
1702 if (strncmp(token, "usr", 3) == 0) {
1703 quota_enable[USRQUOTA] = QOPT_ENABLE;
1704 } else if (strncmp(token, "^usr", 4) == 0) {
1705 quota_enable[USRQUOTA] = QOPT_DISABLE;
1706 } else if (strncmp(token, "grp", 3) == 0) {
1707 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1708 } else if (strncmp(token, "^grp", 4) == 0) {
1709 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1710 } else if (strncmp(token, "prj", 3) == 0) {
1711 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1712 } else if (strncmp(token, "^prj", 4) == 0) {
1713 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1714 } else {
1715 fputs(_("\nBad quota options specified.\n\n"
1716 "Following valid quota options are available "
1717 "(pass by separating with comma):\n"
1718 "\t[^]usr[quota]\n"
1719 "\t[^]grp[quota]\n"
1720 "\t[^]prj[quota]\n"
1721 "\n\n"), stderr);
1722 return 1;
1723 }
1724 return 0;
1725 }
1726
1727 static void parse_e2label_options(int argc, char ** argv)
1728 {
1729 if ((argc < 2) || (argc > 3)) {
1730 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1731 exit(1);
1732 }
1733 io_options = strchr(argv[1], '?');
1734 if (io_options)
1735 *io_options++ = 0;
1736 device_name = blkid_get_devname(NULL, argv[1], NULL);
1737 if (!device_name) {
1738 com_err("e2label", 0, _("Unable to resolve '%s'"),
1739 argv[1]);
1740 exit(1);
1741 }
1742 open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
1743 if (argc == 3) {
1744 open_flag |= EXT2_FLAG_RW;
1745 L_flag = 1;
1746 new_label = argv[2];
1747 } else
1748 print_label++;
1749 }
1750
1751 static time_t parse_time(char *str)
1752 {
1753 struct tm ts;
1754
1755 if (strcmp(str, "now") == 0) {
1756 return (time(0));
1757 }
1758 memset(&ts, 0, sizeof(ts));
1759 #ifdef HAVE_STRPTIME
1760 strptime(str, "%Y%m%d%H%M%S", &ts);
1761 #else
1762 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1763 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1764 ts.tm_year -= 1900;
1765 ts.tm_mon -= 1;
1766 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1767 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1768 ts.tm_min > 59 || ts.tm_sec > 61)
1769 ts.tm_mday = 0;
1770 #endif
1771 if (ts.tm_mday == 0) {
1772 com_err(program_name, 0,
1773 _("Couldn't parse date/time specifier: %s"),
1774 str);
1775 usage();
1776 }
1777 ts.tm_isdst = -1;
1778 return (mktime(&ts));
1779 }
1780
1781 static void parse_tune2fs_options(int argc, char **argv)
1782 {
1783 int c;
1784 char *tmp;
1785 struct group *gr;
1786 struct passwd *pw;
1787 int ret;
1788 char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1789
1790 open_flag = 0;
1791 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1792 while ((c = getopt(argc, argv, optstring)) != EOF)
1793 switch (c) {
1794 case 'c':
1795 max_mount_count = strtol(optarg, &tmp, 0);
1796 if (*tmp || max_mount_count > 16000) {
1797 com_err(program_name, 0,
1798 _("bad mounts count - %s"),
1799 optarg);
1800 usage();
1801 }
1802 if (max_mount_count == 0)
1803 max_mount_count = -1;
1804 c_flag = 1;
1805 open_flag = EXT2_FLAG_RW;
1806 break;
1807 case 'C':
1808 mount_count = strtoul(optarg, &tmp, 0);
1809 if (*tmp || mount_count > 16000) {
1810 com_err(program_name, 0,
1811 _("bad mounts count - %s"),
1812 optarg);
1813 usage();
1814 }
1815 C_flag = 1;
1816 open_flag = EXT2_FLAG_RW;
1817 break;
1818 case 'e':
1819 if (strcmp(optarg, "continue") == 0)
1820 errors = EXT2_ERRORS_CONTINUE;
1821 else if (strcmp(optarg, "remount-ro") == 0)
1822 errors = EXT2_ERRORS_RO;
1823 else if (strcmp(optarg, "panic") == 0)
1824 errors = EXT2_ERRORS_PANIC;
1825 else {
1826 com_err(program_name, 0,
1827 _("bad error behavior - %s"),
1828 optarg);
1829 usage();
1830 }
1831 e_flag = 1;
1832 open_flag = EXT2_FLAG_RW;
1833 break;
1834 case 'E':
1835 extended_cmd = optarg;
1836 open_flag |= EXT2_FLAG_RW;
1837 break;
1838 case 'f': /* Force */
1839 f_flag++;
1840 break;
1841 case 'g':
1842 resgid = strtoul(optarg, &tmp, 0);
1843 if (*tmp) {
1844 gr = getgrnam(optarg);
1845 if (gr == NULL)
1846 tmp = optarg;
1847 else {
1848 resgid = gr->gr_gid;
1849 *tmp = 0;
1850 }
1851 }
1852 if (*tmp) {
1853 com_err(program_name, 0,
1854 _("bad gid/group name - %s"),
1855 optarg);
1856 usage();
1857 }
1858 g_flag = 1;
1859 open_flag = EXT2_FLAG_RW;
1860 break;
1861 case 'i':
1862 interval = strtoul(optarg, &tmp, 0);
1863 switch (*tmp) {
1864 case 's':
1865 tmp++;
1866 break;
1867 case '\0':
1868 case 'd':
1869 case 'D': /* days */
1870 interval *= 86400;
1871 if (*tmp != '\0')
1872 tmp++;
1873 break;
1874 case 'm':
1875 case 'M': /* months! */
1876 interval *= 86400 * 30;
1877 tmp++;
1878 break;
1879 case 'w':
1880 case 'W': /* weeks */
1881 interval *= 86400 * 7;
1882 tmp++;
1883 break;
1884 }
1885 if (*tmp) {
1886 com_err(program_name, 0,
1887 _("bad interval - %s"), optarg);
1888 usage();
1889 }
1890 i_flag = 1;
1891 open_flag = EXT2_FLAG_RW;
1892 break;
1893 case 'j':
1894 if (!journal_size)
1895 journal_size = -1;
1896 open_flag = EXT2_FLAG_RW;
1897 break;
1898 case 'J':
1899 parse_journal_opts(optarg);
1900 open_flag = EXT2_FLAG_RW;
1901 break;
1902 case 'l':
1903 l_flag = 1;
1904 break;
1905 case 'L':
1906 new_label = optarg;
1907 L_flag = 1;
1908 open_flag |= EXT2_FLAG_RW |
1909 EXT2_FLAG_JOURNAL_DEV_OK;
1910 break;
1911 case 'm':
1912 reserved_ratio = strtod(optarg, &tmp);
1913 if (*tmp || reserved_ratio > 50 ||
1914 reserved_ratio < 0) {
1915 com_err(program_name, 0,
1916 _("bad reserved block ratio - %s"),
1917 optarg);
1918 usage();
1919 }
1920 m_flag = 1;
1921 open_flag = EXT2_FLAG_RW;
1922 break;
1923 case 'M':
1924 new_last_mounted = optarg;
1925 M_flag = 1;
1926 open_flag = EXT2_FLAG_RW;
1927 break;
1928 case 'o':
1929 if (mntopts_cmd) {
1930 com_err(program_name, 0, "%s",
1931 _("-o may only be specified once"));
1932 usage();
1933 }
1934 mntopts_cmd = optarg;
1935 open_flag = EXT2_FLAG_RW;
1936 break;
1937 case 'O':
1938 if (features_cmd) {
1939 com_err(program_name, 0, "%s",
1940 _("-O may only be specified once"));
1941 usage();
1942 }
1943 features_cmd = optarg;
1944 open_flag = EXT2_FLAG_RW;
1945 break;
1946 case 'Q':
1947 Q_flag = 1;
1948 ret = parse_quota_opts(optarg, option_handle_function);
1949 if (ret)
1950 exit(1);
1951 open_flag = EXT2_FLAG_RW;
1952 break;
1953 case 'r':
1954 reserved_blocks = strtoul(optarg, &tmp, 0);
1955 if (*tmp) {
1956 com_err(program_name, 0,
1957 _("bad reserved blocks count - %s"),
1958 optarg);
1959 usage();
1960 }
1961 r_flag = 1;
1962 open_flag = EXT2_FLAG_RW;
1963 break;
1964 case 's': /* Deprecated */
1965 s_flag = atoi(optarg);
1966 open_flag = EXT2_FLAG_RW;
1967 break;
1968 case 'T':
1969 T_flag = 1;
1970 last_check_time = parse_time(optarg);
1971 open_flag = EXT2_FLAG_RW;
1972 break;
1973 case 'u':
1974 resuid = strtoul(optarg, &tmp, 0);
1975 if (*tmp) {
1976 pw = getpwnam(optarg);
1977 if (pw == NULL)
1978 tmp = optarg;
1979 else {
1980 resuid = pw->pw_uid;
1981 *tmp = 0;
1982 }
1983 }
1984 if (*tmp) {
1985 com_err(program_name, 0,
1986 _("bad uid/user name - %s"),
1987 optarg);
1988 usage();
1989 }
1990 u_flag = 1;
1991 open_flag = EXT2_FLAG_RW;
1992 break;
1993 case 'U':
1994 new_UUID = optarg;
1995 U_flag = 1;
1996 open_flag = EXT2_FLAG_RW |
1997 EXT2_FLAG_JOURNAL_DEV_OK;
1998 break;
1999 case 'I':
2000 new_inode_size = strtoul(optarg, &tmp, 0);
2001 if (*tmp) {
2002 com_err(program_name, 0,
2003 _("bad inode size - %s"),
2004 optarg);
2005 usage();
2006 }
2007 if (!((new_inode_size &
2008 (new_inode_size - 1)) == 0)) {
2009 com_err(program_name, 0,
2010 _("Inode size must be a "
2011 "power of two- %s"),
2012 optarg);
2013 usage();
2014 }
2015 open_flag = EXT2_FLAG_RW;
2016 I_flag = 1;
2017 break;
2018 case 'z':
2019 undo_file = optarg;
2020 break;
2021 default:
2022 usage();
2023 }
2024 if (optind < argc - 1 || optind == argc)
2025 usage();
2026 if (!open_flag && !l_flag)
2027 usage();
2028 io_options = strchr(argv[optind], '?');
2029 if (io_options)
2030 *io_options++ = 0;
2031 device_name = blkid_get_devname(NULL, argv[optind], NULL);
2032 if (!device_name) {
2033 com_err(program_name, 0, _("Unable to resolve '%s'"),
2034 argv[optind]);
2035 exit(1);
2036 }
2037 }
2038
2039 #ifdef CONFIG_BUILD_FINDFS
2040 void do_findfs(int argc, char **argv)
2041 {
2042 char *dev;
2043
2044 if ((argc != 2) ||
2045 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
2046 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
2047 exit(2);
2048 }
2049 dev = blkid_get_devname(NULL, argv[1], NULL);
2050 if (!dev) {
2051 com_err("findfs", 0, _("Unable to resolve '%s'"),
2052 argv[1]);
2053 exit(1);
2054 }
2055 puts(dev);
2056 exit(0);
2057 }
2058 #endif
2059
2060 static int parse_extended_opts(ext2_filsys fs, const char *opts)
2061 {
2062 char *buf, *token, *next, *p, *arg;
2063 int len, hash_alg;
2064 int r_usage = 0;
2065
2066 len = strlen(opts);
2067 buf = malloc(len+1);
2068 if (!buf) {
2069 fprintf(stderr, "%s",
2070 _("Couldn't allocate memory to parse options!\n"));
2071 return 1;
2072 }
2073 strcpy(buf, opts);
2074 for (token = buf; token && *token; token = next) {
2075 p = strchr(token, ',');
2076 next = 0;
2077 if (p) {
2078 *p = 0;
2079 next = p+1;
2080 }
2081 arg = strchr(token, '=');
2082 if (arg) {
2083 *arg = 0;
2084 arg++;
2085 }
2086 if (strcmp(token, "clear-mmp") == 0 ||
2087 strcmp(token, "clear_mmp") == 0) {
2088 clear_mmp = 1;
2089 } else if (strcmp(token, "mmp_update_interval") == 0) {
2090 unsigned long intv;
2091 if (!arg) {
2092 r_usage++;
2093 continue;
2094 }
2095 intv = strtoul(arg, &p, 0);
2096 if (*p) {
2097 fprintf(stderr,
2098 _("Invalid mmp_update_interval: %s\n"),
2099 arg);
2100 r_usage++;
2101 continue;
2102 }
2103 if (intv == 0) {
2104 intv = EXT4_MMP_UPDATE_INTERVAL;
2105 } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
2106 fprintf(stderr,
2107 _("mmp_update_interval too big: %lu\n"),
2108 intv);
2109 r_usage++;
2110 continue;
2111 }
2112 printf(P_("Setting multiple mount protection update "
2113 "interval to %lu second\n",
2114 "Setting multiple mount protection update "
2115 "interval to %lu seconds\n", intv),
2116 intv);
2117 fs->super->s_mmp_update_interval = intv;
2118 ext2fs_mark_super_dirty(fs);
2119 } else if (!strcmp(token, "test_fs")) {
2120 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
2121 printf("Setting test filesystem flag\n");
2122 ext2fs_mark_super_dirty(fs);
2123 } else if (!strcmp(token, "^test_fs")) {
2124 fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
2125 printf("Clearing test filesystem flag\n");
2126 ext2fs_mark_super_dirty(fs);
2127 } else if (strcmp(token, "stride") == 0) {
2128 if (!arg) {
2129 r_usage++;
2130 continue;
2131 }
2132 stride = strtoul(arg, &p, 0);
2133 if (*p) {
2134 fprintf(stderr,
2135 _("Invalid RAID stride: %s\n"),
2136 arg);
2137 r_usage++;
2138 continue;
2139 }
2140 stride_set = 1;
2141 } else if (strcmp(token, "stripe-width") == 0 ||
2142 strcmp(token, "stripe_width") == 0) {
2143 if (!arg) {
2144 r_usage++;
2145 continue;
2146 }
2147 stripe_width = strtoul(arg, &p, 0);
2148 if (*p) {
2149 fprintf(stderr,
2150 _("Invalid RAID stripe-width: %s\n"),
2151 arg);
2152 r_usage++;
2153 continue;
2154 }
2155 stripe_width_set = 1;
2156 } else if (strcmp(token, "hash_alg") == 0 ||
2157 strcmp(token, "hash-alg") == 0) {
2158 if (!arg) {
2159 r_usage++;
2160 continue;
2161 }
2162 hash_alg = e2p_string2hash(arg);
2163 if (hash_alg < 0) {
2164 fprintf(stderr,
2165 _("Invalid hash algorithm: %s\n"),
2166 arg);
2167 r_usage++;
2168 continue;
2169 }
2170 fs->super->s_def_hash_version = hash_alg;
2171 printf(_("Setting default hash algorithm "
2172 "to %s (%d)\n"),
2173 arg, hash_alg);
2174 ext2fs_mark_super_dirty(fs);
2175 } else if (!strcmp(token, "mount_opts")) {
2176 if (!arg) {
2177 r_usage++;
2178 continue;
2179 }
2180 if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
2181 fprintf(stderr,
2182 "Extended mount options too long\n");
2183 continue;
2184 }
2185 ext_mount_opts = strdup(arg);
2186 } else
2187 r_usage++;
2188 }
2189 if (r_usage) {
2190 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
2191 "Extended options are separated by commas, "
2192 "and may take an argument which\n"
2193 "\tis set off by an equals ('=') sign.\n\n"
2194 "Valid extended options are:\n"
2195 "\tclear_mmp\n"
2196 "\thash_alg=<hash algorithm>\n"
2197 "\tmount_opts=<extended default mount options>\n"
2198 "\tstride=<RAID per-disk chunk size in blocks>\n"
2199 "\tstripe_width=<RAID stride*data disks in blocks>\n"
2200 "\ttest_fs\n"
2201 "\t^test_fs\n"));
2202 free(buf);
2203 return 1;
2204 }
2205 free(buf);
2206
2207 return 0;
2208 }
2209
2210 /*
2211 * Fill in the block bitmap bmap with the information regarding the
2212 * blocks to be moved
2213 */
2214 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2215 ext2fs_block_bitmap bmap)
2216 {
2217 dgrp_t i;
2218 int retval;
2219 ext2_badblocks_list bb_list = 0;
2220 blk64_t j, needed_blocks = 0;
2221 blk64_t start_blk, end_blk;
2222
2223 retval = ext2fs_read_bb_inode(fs, &bb_list);
2224 if (retval)
2225 return retval;
2226
2227 for (i = 0; i < fs->group_desc_count; i++) {
2228 start_blk = ext2fs_inode_table_loc(fs, i) +
2229 fs->inode_blocks_per_group;
2230
2231 end_blk = ext2fs_inode_table_loc(fs, i) +
2232 new_ino_blks_per_grp;
2233
2234 for (j = start_blk; j < end_blk; j++) {
2235 if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2236 /*
2237 * IF the block is a bad block we fail
2238 */
2239 if (ext2fs_badblocks_list_test(bb_list, j)) {
2240 ext2fs_badblocks_list_free(bb_list);
2241 return ENOSPC;
2242 }
2243
2244 ext2fs_mark_block_bitmap2(bmap, j);
2245 } else {
2246 /*
2247 * We are going to use this block for
2248 * inode table. So mark them used.
2249 */
2250 ext2fs_mark_block_bitmap2(fs->block_map, j);
2251 }
2252 }
2253 needed_blocks += end_blk - start_blk;
2254 }
2255
2256 ext2fs_badblocks_list_free(bb_list);
2257 if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2258 return ENOSPC;
2259
2260 return 0;
2261 }
2262
2263 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2264 {
2265 dgrp_t group;
2266 group = ext2fs_group_of_blk2(fs, blk);
2267 if (ext2fs_block_bitmap_loc(fs, group) == blk)
2268 return 1;
2269 if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2270 return 1;
2271 return 0;
2272 }
2273
2274 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2275 {
2276 blk64_t start_blk, end_blk;
2277 start_blk = fs->super->s_first_data_block +
2278 EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2279 /*
2280 * We cannot get new block beyond end_blk for for the last block group
2281 * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2282 */
2283 end_blk = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2284 if (blk >= start_blk && blk <= end_blk)
2285 return 1;
2286 return 0;
2287 }
2288
2289 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2290 {
2291
2292 char *buf;
2293 dgrp_t group = 0;
2294 errcode_t retval;
2295 int meta_data = 0;
2296 blk64_t blk, new_blk, goal;
2297 struct blk_move *bmv;
2298
2299 retval = ext2fs_get_mem(fs->blocksize, &buf);
2300 if (retval)
2301 return retval;
2302
2303 for (new_blk = blk = fs->super->s_first_data_block;
2304 blk < ext2fs_blocks_count(fs->super); blk++) {
2305 if (!ext2fs_test_block_bitmap2(bmap, blk))
2306 continue;
2307
2308 if (ext2fs_is_meta_block(fs, blk)) {
2309 /*
2310 * If the block is mapping a fs meta data block
2311 * like group desc/block bitmap/inode bitmap. We
2312 * should find a block in the same group and fix
2313 * the respective fs metadata pointers. Otherwise
2314 * fail
2315 */
2316 group = ext2fs_group_of_blk2(fs, blk);
2317 goal = ext2fs_group_first_block2(fs, group);
2318 meta_data = 1;
2319
2320 } else {
2321 goal = new_blk;
2322 }
2323 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2324 if (retval)
2325 goto err_out;
2326
2327 /* new fs meta data block should be in the same group */
2328 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2329 retval = ENOSPC;
2330 goto err_out;
2331 }
2332
2333 /* Mark this block as allocated */
2334 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2335
2336 /* Add it to block move list */
2337 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2338 if (retval)
2339 goto err_out;
2340
2341 bmv->old_loc = blk;
2342 bmv->new_loc = new_blk;
2343
2344 list_add(&(bmv->list), &blk_move_list);
2345
2346 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2347 if (retval)
2348 goto err_out;
2349
2350 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2351 if (retval)
2352 goto err_out;
2353 }
2354
2355 err_out:
2356 ext2fs_free_mem(&buf);
2357 return retval;
2358 }
2359
2360 static blk64_t translate_block(blk64_t blk)
2361 {
2362 struct list_head *entry;
2363 struct blk_move *bmv;
2364
2365 list_for_each(entry, &blk_move_list) {
2366 bmv = list_entry(entry, struct blk_move, list);
2367 if (bmv->old_loc == blk)
2368 return bmv->new_loc;
2369 }
2370
2371 return 0;
2372 }
2373
2374 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2375 blk64_t *block_nr,
2376 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2377 blk64_t ref_block EXT2FS_ATTR((unused)),
2378 int ref_offset EXT2FS_ATTR((unused)),
2379 void *priv_data)
2380 {
2381 int ret = 0;
2382 blk64_t new_blk;
2383 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2384
2385 if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2386 return 0;
2387 new_blk = translate_block(*block_nr);
2388 if (new_blk) {
2389 *block_nr = new_blk;
2390 /*
2391 * This will force the ext2fs_write_inode in the iterator
2392 */
2393 ret |= BLOCK_CHANGED;
2394 }
2395
2396 return ret;
2397 }
2398
2399 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2400 {
2401 errcode_t retval = 0;
2402 ext2_ino_t ino;
2403 blk64_t blk;
2404 char *block_buf = 0;
2405 struct ext2_inode inode;
2406 ext2_inode_scan scan = NULL;
2407
2408 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2409 if (retval)
2410 return retval;
2411
2412 retval = ext2fs_open_inode_scan(fs, 0, &scan);
2413 if (retval)
2414 goto err_out;
2415
2416 while (1) {
2417 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2418 if (retval)
2419 goto err_out;
2420
2421 if (!ino)
2422 break;
2423
2424 if (inode.i_links_count == 0)
2425 continue; /* inode not in use */
2426
2427 /* FIXME!!
2428 * If we end up modifying the journal inode
2429 * the sb->s_jnl_blocks will differ. But a
2430 * subsequent e2fsck fixes that.
2431 * Do we need to fix this ??
2432 */
2433
2434 if (ext2fs_file_acl_block(fs, &inode) &&
2435 ext2fs_test_block_bitmap2(bmap,
2436 ext2fs_file_acl_block(fs, &inode))) {
2437 blk = translate_block(ext2fs_file_acl_block(fs,
2438 &inode));
2439 if (!blk)
2440 continue;
2441
2442 ext2fs_file_acl_block_set(fs, &inode, blk);
2443
2444 /*
2445 * Write the inode to disk so that inode table
2446 * resizing can work
2447 */
2448 retval = ext2fs_write_inode(fs, ino, &inode);
2449 if (retval)
2450 goto err_out;
2451 }
2452
2453 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2454 continue;
2455
2456 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2457 process_block, bmap);
2458 if (retval)
2459 goto err_out;
2460
2461 }
2462
2463 err_out:
2464 ext2fs_free_mem(&block_buf);
2465 ext2fs_close_inode_scan(scan);
2466
2467 return retval;
2468 }
2469
2470 /*
2471 * We need to scan for inode and block bitmaps that may need to be
2472 * moved. This can take place if the filesystem was formatted for
2473 * RAID arrays using the mke2fs's extended option "stride".
2474 */
2475 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2476 {
2477 dgrp_t i;
2478 blk64_t blk, new_blk;
2479
2480 for (i = 0; i < fs->group_desc_count; i++) {
2481 blk = ext2fs_block_bitmap_loc(fs, i);
2482 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2483 new_blk = translate_block(blk);
2484 if (!new_blk)
2485 continue;
2486 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2487 }
2488
2489 blk = ext2fs_inode_bitmap_loc(fs, i);
2490 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2491 new_blk = translate_block(blk);
2492 if (!new_blk)
2493 continue;
2494 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2495 }
2496 }
2497 return 0;
2498 }
2499
2500 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2501 {
2502 dgrp_t i;
2503 blk64_t blk;
2504 errcode_t retval;
2505 int new_ino_blks_per_grp;
2506 unsigned int j;
2507 char *old_itable = NULL, *new_itable = NULL;
2508 char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2509 unsigned long old_ino_size;
2510 int old_itable_size, new_itable_size;
2511
2512 old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2513 old_ino_size = EXT2_INODE_SIZE(fs->super);
2514
2515 new_ino_blks_per_grp = ext2fs_div_ceil(
2516 EXT2_INODES_PER_GROUP(fs->super) *
2517 new_ino_size,
2518 fs->blocksize);
2519
2520 new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2521
2522 retval = ext2fs_get_mem(old_itable_size, &old_itable);
2523 if (retval)
2524 return retval;
2525
2526 retval = ext2fs_get_mem(new_itable_size, &new_itable);
2527 if (retval)
2528 goto err_out;
2529
2530 tmp_old_itable = old_itable;
2531 tmp_new_itable = new_itable;
2532
2533 for (i = 0; i < fs->group_desc_count; i++) {
2534 blk = ext2fs_inode_table_loc(fs, i);
2535 retval = io_channel_read_blk64(fs->io, blk,
2536 fs->inode_blocks_per_group, old_itable);
2537 if (retval)
2538 goto err_out;
2539
2540 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2541 memcpy(new_itable, old_itable, old_ino_size);
2542
2543 memset(new_itable+old_ino_size, 0,
2544 new_ino_size - old_ino_size);
2545
2546 new_itable += new_ino_size;
2547 old_itable += old_ino_size;
2548 }
2549
2550 /* reset the pointer */
2551 old_itable = tmp_old_itable;
2552 new_itable = tmp_new_itable;
2553
2554 retval = io_channel_write_blk64(fs->io, blk,
2555 new_ino_blks_per_grp, new_itable);
2556 if (retval)
2557 goto err_out;
2558 }
2559
2560 /* Update the meta data */
2561 fs->inode_blocks_per_group = new_ino_blks_per_grp;
2562 ext2fs_free_inode_cache(fs->icache);
2563 fs->icache = 0;
2564 fs->super->s_inode_size = new_ino_size;
2565
2566 err_out:
2567 if (old_itable)
2568 ext2fs_free_mem(&old_itable);
2569
2570 if (new_itable)
2571 ext2fs_free_mem(&new_itable);
2572
2573 return retval;
2574 }
2575
2576 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
2577 {
2578 blk64_t blk;
2579 ext2_ino_t ino;
2580 unsigned int group = 0;
2581 unsigned int count = 0;
2582 int total_free = 0;
2583 int group_free = 0;
2584
2585 /*
2586 * First calculate the block statistics
2587 */
2588 for (blk = fs->super->s_first_data_block;
2589 blk < ext2fs_blocks_count(fs->super); blk++) {
2590 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
2591 group_free++;
2592 total_free++;
2593 }
2594 count++;
2595 if ((count == fs->super->s_blocks_per_group) ||
2596 (blk == ext2fs_blocks_count(fs->super)-1)) {
2597 ext2fs_bg_free_blocks_count_set(fs, group++,
2598 group_free);
2599 count = 0;
2600 group_free = 0;
2601 }
2602 }
2603 total_free = EXT2FS_C2B(fs, total_free);
2604 ext2fs_free_blocks_count_set(fs->super, total_free);
2605
2606 /*
2607 * Next, calculate the inode statistics
2608 */
2609 group_free = 0;
2610 total_free = 0;
2611 count = 0;
2612 group = 0;
2613
2614 /* Protect loop from wrap-around if s_inodes_count maxed */
2615 for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
2616 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
2617 group_free++;
2618 total_free++;
2619 }
2620 count++;
2621 if ((count == fs->super->s_inodes_per_group) ||
2622 (ino == fs->super->s_inodes_count)) {
2623 ext2fs_bg_free_inodes_count_set(fs, group++,
2624 group_free);
2625 count = 0;
2626 group_free = 0;
2627 }
2628 }
2629 fs->super->s_free_inodes_count = total_free;
2630 ext2fs_mark_super_dirty(fs);
2631 return 0;
2632 }
2633
2634 #define list_for_each_safe(pos, pnext, head) \
2635 for (pos = (head)->next, pnext = pos->next; pos != (head); \
2636 pos = pnext, pnext = pos->next)
2637
2638 static void free_blk_move_list(void)
2639 {
2640 struct list_head *entry, *tmp;
2641 struct blk_move *bmv;
2642
2643 list_for_each_safe(entry, tmp, &blk_move_list) {
2644 bmv = list_entry(entry, struct blk_move, list);
2645 list_del(entry);
2646 ext2fs_free_mem(&bmv);
2647 }
2648 return;
2649 }
2650
2651 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2652 {
2653 errcode_t retval;
2654 int new_ino_blks_per_grp;
2655 ext2fs_block_bitmap bmap;
2656
2657 retval = ext2fs_read_inode_bitmap(fs);
2658 if (retval) {
2659 fputs(_("Failed to read inode bitmap\n"), stderr);
2660 return retval;
2661 }
2662 retval = ext2fs_read_block_bitmap(fs);
2663 if (retval) {
2664 fputs(_("Failed to read block bitmap\n"), stderr);
2665 return retval;
2666 }
2667 INIT_LIST_HEAD(&blk_move_list);
2668
2669
2670 new_ino_blks_per_grp = ext2fs_div_ceil(
2671 EXT2_INODES_PER_GROUP(fs->super)*
2672 new_size,
2673 fs->blocksize);
2674
2675 /* We may change the file system.
2676 * Mark the file system as invalid so that
2677 * the user is prompted to run fsck.
2678 */
2679 fs->super->s_state &= ~EXT2_VALID_FS;
2680
2681 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2682 &bmap);
2683 if (retval) {
2684 fputs(_("Failed to allocate block bitmap when "
2685 "increasing inode size\n"), stderr);
2686 return retval;
2687 }
2688 retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2689 if (retval) {
2690 fputs(_("Not enough space to increase inode size \n"), stderr);
2691 goto err_out;
2692 }
2693 retval = move_block(fs, bmap);
2694 if (retval) {
2695 fputs(_("Failed to relocate blocks during inode resize \n"),
2696 stderr);
2697 goto err_out;
2698 }
2699 retval = inode_scan_and_fix(fs, bmap);
2700 if (retval)
2701 goto err_out_undo;
2702
2703 retval = group_desc_scan_and_fix(fs, bmap);
2704 if (retval)
2705 goto err_out_undo;
2706
2707 retval = expand_inode_table(fs, new_size);
2708 if (retval)
2709 goto err_out_undo;
2710
2711 ext2fs_calculate_summary_stats(fs);
2712
2713 fs->super->s_state |= EXT2_VALID_FS;
2714 /* mark super block and block bitmap as dirty */
2715 ext2fs_mark_super_dirty(fs);
2716 ext2fs_mark_bb_dirty(fs);
2717
2718 err_out:
2719 free_blk_move_list();
2720 ext2fs_free_block_bitmap(bmap);
2721
2722 return retval;
2723
2724 err_out_undo:
2725 free_blk_move_list();
2726 ext2fs_free_block_bitmap(bmap);
2727 fputs(_("Error in resizing the inode size.\n"
2728 "Run e2undo to undo the "
2729 "file system changes. \n"), stderr);
2730
2731 return retval;
2732 }
2733
2734 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2735 {
2736 errcode_t retval = 0;
2737 const char *tdb_dir;
2738 char *tdb_file = NULL;
2739 char *dev_name, *tmp_name;
2740
2741 /* (re)open a specific undo file */
2742 if (undo_file && undo_file[0] != 0) {
2743 retval = set_undo_io_backing_manager(*io_ptr);
2744 if (retval)
2745 goto err;
2746 *io_ptr = undo_io_manager;
2747 retval = set_undo_io_backup_file(undo_file);
2748 if (retval)
2749 goto err;
2750 printf(_("Overwriting existing filesystem; this can be undone "
2751 "using the command:\n"
2752 " e2undo %s %s\n\n"),
2753 undo_file, name);
2754 return retval;
2755 }
2756
2757 /*
2758 * Configuration via a conf file would be
2759 * nice
2760 */
2761 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2762 if (!tdb_dir)
2763 tdb_dir = "/var/lib/e2fsprogs";
2764
2765 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2766 access(tdb_dir, W_OK))
2767 return 0;
2768
2769 tmp_name = strdup(name);
2770 if (!tmp_name)
2771 goto errout;
2772 dev_name = basename(tmp_name);
2773 tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2774 if (!tdb_file) {
2775 free(tmp_name);
2776 goto errout;
2777 }
2778 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2779 free(tmp_name);
2780
2781 if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2782 retval = errno;
2783 com_err(program_name, retval,
2784 _("while trying to delete %s"), tdb_file);
2785 goto errout;
2786 }
2787
2788 retval = set_undo_io_backing_manager(*io_ptr);
2789 if (retval)
2790 goto errout;
2791 *io_ptr = undo_io_manager;
2792 retval = set_undo_io_backup_file(tdb_file);
2793 if (retval)
2794 goto errout;
2795 printf(_("Overwriting existing filesystem; this can be undone "
2796 "using the command:\n"
2797 " e2undo %s %s\n\n"),
2798 tdb_file, name);
2799
2800 free(tdb_file);
2801 return 0;
2802 errout:
2803 free(tdb_file);
2804 err:
2805 com_err("tune2fs", retval, "while trying to setup undo file\n");
2806 return retval;
2807 }
2808
2809 static int
2810 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2811 {
2812 int retval, nr_users, start;
2813 journal_superblock_t *jsb;
2814 ext2_filsys jfs;
2815 __u8 *j_uuid;
2816 char *journal_path;
2817 char uuid[UUID_STR_SIZE];
2818 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2819
2820 if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
2821 return 0;
2822
2823 uuid_unparse(sb->s_journal_uuid, uuid);
2824 journal_path = blkid_get_devname(NULL, "UUID", uuid);
2825 if (!journal_path)
2826 return 0;
2827
2828 retval = ext2fs_open2(journal_path, io_options,
2829 EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2830 0, 0, unix_io_manager, &jfs);
2831 if (retval) {
2832 com_err(program_name, retval,
2833 _("while trying to open %s"),
2834 journal_path);
2835 return retval;
2836 }
2837
2838 retval = get_journal_sb(jfs, buf);
2839 if (retval != 0) {
2840 if (retval == EXT2_ET_UNSUPP_FEATURE)
2841 fprintf(stderr, _("%s is not a journal device.\n"),
2842 journal_path);
2843 return retval;
2844 }
2845
2846 jsb = (journal_superblock_t *) buf;
2847 /* Find the filesystem UUID */
2848 nr_users = ntohl(jsb->s_nr_users);
2849
2850 j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2851 if (j_uuid == NULL) {
2852 fputs(_("Filesystem's UUID not found on journal device.\n"),
2853 stderr);
2854 return EXT2_ET_LOAD_EXT_JOURNAL;
2855 }
2856
2857 memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2858
2859 start = ext2fs_journal_sb_start(jfs->blocksize);
2860 /* Write back the journal superblock */
2861 retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2862 if (retval != 0) {
2863 com_err(program_name, retval,
2864 "while writing journal superblock.");
2865 return retval;
2866 }
2867
2868 ext2fs_close(jfs);
2869
2870 return 0;
2871 }
2872
2873 #ifndef BUILD_AS_LIB
2874 int main(int argc, char **argv)
2875 #else
2876 int tune2fs_main(int argc, char **argv)
2877 #endif /* BUILD_AS_LIB */
2878 {
2879 errcode_t retval;
2880 ext2_filsys fs;
2881 struct ext2_super_block *sb;
2882 io_manager io_ptr, io_ptr_orig = NULL;
2883 int rc = 0;
2884 char default_undo_file[1] = { 0 };
2885
2886 #ifdef ENABLE_NLS
2887 setlocale(LC_MESSAGES, "");
2888 setlocale(LC_CTYPE, "");
2889 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2890 textdomain(NLS_CAT_NAME);
2891 set_com_err_gettext(gettext);
2892 #endif
2893 if (argc && *argv)
2894 program_name = *argv;
2895 add_error_table(&et_ext2_error_table);
2896
2897 #ifdef CONFIG_BUILD_FINDFS
2898 if (strcmp(get_progname(argv[0]), "findfs") == 0)
2899 do_findfs(argc, argv);
2900 #endif
2901 if (strcmp(get_progname(argv[0]), "e2label") == 0)
2902 parse_e2label_options(argc, argv);
2903 else
2904 parse_tune2fs_options(argc, argv);
2905
2906 #ifdef CONFIG_TESTIO_DEBUG
2907 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2908 io_ptr = test_io_manager;
2909 test_io_backing_manager = unix_io_manager;
2910 } else
2911 #endif
2912 io_ptr = unix_io_manager;
2913
2914 retry_open:
2915 if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2916 open_flag |= EXT2_FLAG_SKIP_MMP;
2917
2918 open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_JOURNAL_DEV_OK;
2919
2920 /* keep the filesystem struct around to dump MMP data */
2921 open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2922
2923 retval = ext2fs_open2(device_name, io_options, open_flag,
2924 0, 0, io_ptr, &fs);
2925 if (retval) {
2926 com_err(program_name, retval,
2927 _("while trying to open %s"),
2928 device_name);
2929 if (retval == EXT2_ET_MMP_FSCK_ON ||
2930 retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2931 dump_mmp_msg(fs->mmp_buf,
2932 _("If you are sure the filesystem "
2933 "is not in use on any node, run:\n"
2934 "'tune2fs -f -E clear_mmp {device}'\n"));
2935 else if (retval == EXT2_ET_MMP_FAILED)
2936 dump_mmp_msg(fs->mmp_buf, NULL);
2937 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2938 fprintf(stderr,
2939 _("MMP block magic is bad. Try to fix it by "
2940 "running:\n'e2fsck -f %s'\n"), device_name);
2941 else if (retval == EXT2_ET_BAD_MAGIC)
2942 check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2943 else if (retval != EXT2_ET_MMP_FAILED)
2944 fprintf(stderr, "%s",
2945 _("Couldn't find valid filesystem superblock.\n"));
2946
2947 ext2fs_free(fs);
2948 exit(1);
2949 }
2950 if (ext2fs_has_feature_journal_dev(fs->super)) {
2951 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
2952 ext2fs_free(fs);
2953 exit(1);
2954 }
2955 fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
2956
2957 if (I_flag) {
2958 /*
2959 * Check the inode size is right so we can issue an
2960 * error message and bail before setting up the tdb
2961 * file.
2962 */
2963 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
2964 fprintf(stderr, _("The inode size is already %lu\n"),
2965 new_inode_size);
2966 rc = 1;
2967 goto closefs;
2968 }
2969 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
2970 fprintf(stderr, "%s",
2971 _("Shrinking inode size is not supported\n"));
2972 rc = 1;
2973 goto closefs;
2974 }
2975 if (new_inode_size > fs->blocksize) {
2976 fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
2977 new_inode_size, fs->blocksize);
2978 rc = 1;
2979 goto closefs;
2980 }
2981 check_fsck_needed(fs,
2982 _("Resizing inodes could take some time."));
2983 /*
2984 * If inode resize is requested use the
2985 * Undo I/O manager
2986 */
2987 undo_file = default_undo_file;
2988 }
2989
2990 /* Set up an undo file */
2991 if (undo_file && io_ptr_orig == NULL) {
2992 io_ptr_orig = io_ptr;
2993 retval = tune2fs_setup_tdb(device_name, &io_ptr);
2994 if (retval) {
2995 rc = 1;
2996 goto closefs;
2997 }
2998 if (io_ptr != io_ptr_orig) {
2999 ext2fs_close_free(&fs);
3000 goto retry_open;
3001 }
3002 }
3003
3004 sb = fs->super;
3005 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
3006
3007 if (print_label) {
3008 /* For e2label emulation */
3009 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
3010 sb->s_volume_name);
3011 remove_error_table(&et_ext2_error_table);
3012 goto closefs;
3013 }
3014
3015 retval = ext2fs_check_if_mounted(device_name, &mount_flags);
3016 if (retval) {
3017 com_err("ext2fs_check_if_mount", retval,
3018 _("while determining whether %s is mounted."),
3019 device_name);
3020 rc = 1;
3021 goto closefs;
3022 }
3023 /* Normally we only need to write out the superblock */
3024 fs->flags |= EXT2_FLAG_SUPER_ONLY;
3025
3026 if (c_flag) {
3027 sb->s_max_mnt_count = max_mount_count;
3028 ext2fs_mark_super_dirty(fs);
3029 printf(_("Setting maximal mount count to %d\n"),
3030 max_mount_count);
3031 }
3032 if (C_flag) {
3033 sb->s_mnt_count = mount_count;
3034 ext2fs_mark_super_dirty(fs);
3035 printf(_("Setting current mount count to %d\n"), mount_count);
3036 }
3037 if (e_flag) {
3038 sb->s_errors = errors;
3039 ext2fs_mark_super_dirty(fs);
3040 printf(_("Setting error behavior to %d\n"), errors);
3041 }
3042 if (g_flag) {
3043 sb->s_def_resgid = resgid;
3044 ext2fs_mark_super_dirty(fs);
3045 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
3046 }
3047 if (i_flag) {
3048 if ((unsigned long long)interval >= (1ULL << 32)) {
3049 com_err(program_name, 0,
3050 _("interval between checks is too big (%lu)"),
3051 interval);
3052 rc = 1;
3053 goto closefs;
3054 }
3055 sb->s_checkinterval = interval;
3056 ext2fs_mark_super_dirty(fs);
3057 printf(_("Setting interval between checks to %lu seconds\n"),
3058 interval);
3059 }
3060 if (m_flag) {
3061 ext2fs_r_blocks_count_set(sb, reserved_ratio *
3062 ext2fs_blocks_count(sb) / 100.0);
3063 ext2fs_mark_super_dirty(fs);
3064 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
3065 reserved_ratio, ext2fs_r_blocks_count(sb));
3066 }
3067 if (r_flag) {
3068 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
3069 com_err(program_name, 0,
3070 _("reserved blocks count is too big (%llu)"),
3071 reserved_blocks);
3072 rc = 1;
3073 goto closefs;
3074 }
3075 ext2fs_r_blocks_count_set(sb, reserved_blocks);
3076 ext2fs_mark_super_dirty(fs);
3077 printf(_("Setting reserved blocks count to %llu\n"),
3078 reserved_blocks);
3079 }
3080 if (s_flag == 1) {
3081 if (ext2fs_has_feature_sparse_super(sb)) {
3082 fputs(_("\nThe filesystem already has sparse "
3083 "superblocks.\n"), stderr);
3084 } else if (ext2fs_has_feature_meta_bg(sb)) {
3085 fputs(_("\nSetting the sparse superblock flag not "
3086 "supported\nfor filesystems with "
3087 "the meta_bg feature enabled.\n"),
3088 stderr);
3089 rc = 1;
3090 goto closefs;
3091 } else {
3092 ext2fs_set_feature_sparse_super(sb);
3093 sb->s_state &= ~EXT2_VALID_FS;
3094 ext2fs_mark_super_dirty(fs);
3095 printf(_("\nSparse superblock flag set. %s"),
3096 _(please_fsck));
3097 }
3098 }
3099 if (s_flag == 0) {
3100 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
3101 stderr);
3102 rc = 1;
3103 goto closefs;
3104 }
3105 if (T_flag) {
3106 sb->s_lastcheck = last_check_time;
3107 ext2fs_mark_super_dirty(fs);
3108 printf(_("Setting time filesystem last checked to %s\n"),
3109 ctime(&last_check_time));
3110 }
3111 if (u_flag) {
3112 sb->s_def_resuid = resuid;
3113 ext2fs_mark_super_dirty(fs);
3114 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
3115 }
3116 if (L_flag) {
3117 if (strlen(new_label) > sizeof(sb->s_volume_name))
3118 fputs(_("Warning: label too long, truncating.\n"),
3119 stderr);
3120 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
3121 strncpy(sb->s_volume_name, new_label,
3122 sizeof(sb->s_volume_name));
3123 ext2fs_mark_super_dirty(fs);
3124 }
3125 if (M_flag) {
3126 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
3127 strncpy(sb->s_last_mounted, new_last_mounted,
3128 sizeof(sb->s_last_mounted));
3129 ext2fs_mark_super_dirty(fs);
3130 }
3131 if (mntopts_cmd) {
3132 rc = update_mntopts(fs, mntopts_cmd);
3133 if (rc)
3134 goto closefs;
3135 }
3136 if (features_cmd) {
3137 rc = update_feature_set(fs, features_cmd);
3138 if (rc)
3139 goto closefs;
3140 }
3141 if (extended_cmd) {
3142 rc = parse_extended_opts(fs, extended_cmd);
3143 if (rc)
3144 goto closefs;
3145 if (clear_mmp && !f_flag) {
3146 fputs(_("Error in using clear_mmp. "
3147 "It must be used with -f\n"),
3148 stderr);
3149 goto closefs;
3150 }
3151 }
3152 if (clear_mmp) {
3153 rc = ext2fs_mmp_clear(fs);
3154 goto closefs;
3155 }
3156 if (journal_size || journal_device) {
3157 rc = add_journal(fs);
3158 if (rc)
3159 goto closefs;
3160 }
3161
3162 if (Q_flag) {
3163 if (mount_flags & EXT2_MF_MOUNTED) {
3164 fputs(_("The quota feature may only be changed when "
3165 "the filesystem is unmounted.\n"), stderr);
3166 rc = 1;
3167 goto closefs;
3168 }
3169 handle_quota_options(fs);
3170 }
3171
3172 if (U_flag) {
3173 int set_csum = 0;
3174 dgrp_t i;
3175 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3176 __u8 old_uuid[UUID_SIZE];
3177
3178 if (ext2fs_has_group_desc_csum(fs)) {
3179 /*
3180 * Changing the UUID on a metadata_csum FS requires
3181 * rewriting all metadata, which can race with a
3182 * mounted fs. Don't allow that unless we're saving
3183 * the checksum seed.
3184 */
3185 if ((mount_flags & EXT2_MF_MOUNTED) &&
3186 !ext2fs_has_feature_csum_seed(fs->super) &&
3187 ext2fs_has_feature_metadata_csum(fs->super)) {
3188 fputs(_("The UUID may only be "
3189 "changed when the filesystem is "
3190 "unmounted.\n"), stderr);
3191 fputs(_("If you only use kernels newer than "
3192 "v4.4, run 'tune2fs -O "
3193 "metadata_csum_seed' and re-run this "
3194 "command.\n"), stderr);
3195 try_confirm_csum_seed_support();
3196 exit(1);
3197 }
3198 if (!ext2fs_has_feature_csum_seed(fs->super))
3199 check_fsck_needed(fs,
3200 _("Setting UUID on a checksummed "
3201 "filesystem could take some time."));
3202
3203 /*
3204 * Determine if the block group checksums are
3205 * correct so we know whether or not to set
3206 * them later on.
3207 */
3208 for (i = 0; i < fs->group_desc_count; i++)
3209 if (!ext2fs_group_desc_csum_verify(fs, i))
3210 break;
3211 if (i >= fs->group_desc_count)
3212 set_csum = 1;
3213 }
3214
3215 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
3216 if ((strcasecmp(new_UUID, "null") == 0) ||
3217 (strcasecmp(new_UUID, "clear") == 0)) {
3218 uuid_clear(sb->s_uuid);
3219 } else if (strcasecmp(new_UUID, "time") == 0) {
3220 uuid_generate_time(sb->s_uuid);
3221 } else if (strcasecmp(new_UUID, "random") == 0) {
3222 uuid_generate(sb->s_uuid);
3223 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
3224 com_err(program_name, 0, "%s",
3225 _("Invalid UUID format\n"));
3226 rc = 1;
3227 goto closefs;
3228 }
3229 ext2fs_init_csum_seed(fs);
3230 if (set_csum) {
3231 for (i = 0; i < fs->group_desc_count; i++)
3232 ext2fs_group_desc_csum_set(fs, i);
3233 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3234 }
3235
3236 /* If this is a journal dev, we need to copy UUID into jsb */
3237 if (!(rc = get_journal_sb(fs, buf))) {
3238 journal_superblock_t *jsb;
3239
3240 jsb = (journal_superblock_t *) buf;
3241 fputs(_("Need to update journal superblock.\n"), stdout);
3242 memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3243
3244 /* Writeback the journal superblock */
3245 if ((rc = io_channel_write_blk64(fs->io,
3246 ext2fs_journal_sb_start(fs->blocksize),
3247 -SUPERBLOCK_SIZE, buf)))
3248 goto closefs;
3249 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3250 goto closefs;
3251 else {
3252 rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3253
3254 if ((rc = fs_update_journal_user(sb, old_uuid)))
3255 goto closefs;
3256 }
3257
3258 ext2fs_mark_super_dirty(fs);
3259 if (!ext2fs_has_feature_csum_seed(fs->super) &&
3260 (ext2fs_has_feature_metadata_csum(fs->super) ||
3261 ext2fs_has_feature_ea_inode(fs->super)))
3262 rewrite_checksums = 1;
3263 }
3264
3265 if (I_flag) {
3266 if (mount_flags & EXT2_MF_MOUNTED) {
3267 fputs(_("The inode size may only be "
3268 "changed when the filesystem is "
3269 "unmounted.\n"), stderr);
3270 rc = 1;
3271 goto closefs;
3272 }
3273 if (ext2fs_has_feature_flex_bg(fs->super)) {
3274 fputs(_("Changing the inode size not supported for "
3275 "filesystems with the flex_bg\n"
3276 "feature enabled.\n"),
3277 stderr);
3278 rc = 1;
3279 goto closefs;
3280 }
3281 /*
3282 * We want to update group descriptor also
3283 * with the new free inode count
3284 */
3285 if (rewrite_checksums)
3286 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3287 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3288 retval = resize_inode(fs, new_inode_size);
3289 if (rewrite_checksums)
3290 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3291 if (retval == 0) {
3292 printf(_("Setting inode size %lu\n"),
3293 new_inode_size);
3294 rewrite_checksums = 1;
3295 } else {
3296 printf("%s", _("Failed to change inode size\n"));
3297 rc = 1;
3298 goto closefs;
3299 }
3300 }
3301
3302 if (rewrite_checksums)
3303 rewrite_metadata_checksums(fs);
3304
3305 if (l_flag)
3306 list_super(sb);
3307 if (stride_set) {
3308 sb->s_raid_stride = stride;
3309 ext2fs_mark_super_dirty(fs);
3310 printf(_("Setting stride size to %d\n"), stride);
3311 }
3312 if (stripe_width_set) {
3313 sb->s_raid_stripe_width = stripe_width;
3314 ext2fs_mark_super_dirty(fs);
3315 printf(_("Setting stripe width to %d\n"), stripe_width);
3316 }
3317 if (ext_mount_opts) {
3318 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3319 sizeof(fs->super->s_mount_opts));
3320 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3321 ext2fs_mark_super_dirty(fs);
3322 printf(_("Setting extended default mount options to '%s'\n"),
3323 ext_mount_opts);
3324 free(ext_mount_opts);
3325 }
3326
3327 #ifdef NO_RECOVERY
3328 /* Warn if file system needs recovery and it is opened for writing. */
3329 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3330 (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
3331 (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
3332 fprintf(stderr,
3333 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
3334 "\te2fsck -E journal_only %s\n\n"
3335 "then rerun this command. Otherwise, any changes made may be overwritten\n"
3336 "by journal recovery.\n"), device_name);
3337 }
3338 #else
3339 /* Recover the journal if possible. */
3340 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3341 ext2fs_has_feature_journal_needs_recovery(fs->super)) {
3342 errcode_t err;
3343
3344 printf(_("Recovering journal.\n"));
3345 err = ext2fs_run_ext3_journal(&fs);
3346 if (err) {
3347 com_err("tune2fs", err, "while recovering journal.\n");
3348 printf(_("Please run e2fsck -fy %s.\n"), argv[1]);
3349 if (fs)
3350 ext2fs_close_free(&fs);
3351 exit(1);
3352 }
3353 ext2fs_clear_feature_journal_needs_recovery(fs->super);
3354 ext2fs_mark_super_dirty(fs);
3355 }
3356 #endif
3357
3358 free(device_name);
3359 remove_error_table(&et_ext2_error_table);
3360
3361 closefs:
3362 if (rc) {
3363 ext2fs_mmp_stop(fs);
3364 #ifndef BUILD_AS_LIB
3365 exit(1);
3366 #endif
3367 }
3368
3369 if (feature_64bit)
3370 convert_64bit(fs, feature_64bit);
3371 return (ext2fs_close_free(&fs) ? 1 : 0);
3372 }
Unnamed repository; edit this file 'description' to name the repository.