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Rename the feature "fname_encoding" to be "casefold".
[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[-r reserved_blocks_count] [-u user] [-C mount_count]\n"
141 "\t[-L volume_label] [-M last_mounted_dir]\n"
142 "\t[-O [^]feature[,...]] [-Q quota_options]\n"
143 "\t[-E extended-option[,...]] [-T last_check_time] "
144 "[-U UUID]\n\t[-I new_inode_size] [-z undo_file] device\n"),
145 program_name);
146 exit(1);
147 }
148
149 static __u32 ok_features[3] = {
150 /* Compat */
151 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
152 EXT2_FEATURE_COMPAT_DIR_INDEX,
153 /* Incompat */
154 EXT2_FEATURE_INCOMPAT_FILETYPE |
155 EXT3_FEATURE_INCOMPAT_EXTENTS |
156 EXT4_FEATURE_INCOMPAT_FLEX_BG |
157 EXT4_FEATURE_INCOMPAT_EA_INODE|
158 EXT4_FEATURE_INCOMPAT_MMP |
159 EXT4_FEATURE_INCOMPAT_64BIT |
160 EXT4_FEATURE_INCOMPAT_ENCRYPT |
161 EXT4_FEATURE_INCOMPAT_CSUM_SEED |
162 EXT4_FEATURE_INCOMPAT_LARGEDIR,
163 /* R/O compat */
164 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
165 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
166 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
167 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
168 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
169 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
170 EXT4_FEATURE_RO_COMPAT_QUOTA |
171 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
172 EXT4_FEATURE_RO_COMPAT_READONLY |
173 EXT4_FEATURE_RO_COMPAT_PROJECT |
174 EXT4_FEATURE_RO_COMPAT_VERITY
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 if (nr_users > JFS_USERS_MAX) {
296 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
297 "is too high (%d).\n"), nr_users);
298 commit_remove_journal = 1;
299 goto no_valid_journal;
300 }
301
302 if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
303 fputs(_("Filesystem's UUID not found on journal device.\n"),
304 stderr);
305 commit_remove_journal = 1;
306 goto no_valid_journal;
307 }
308 nr_users--;
309 for (i = 0; i < nr_users; i++)
310 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
311 jsb->s_nr_users = htonl(nr_users);
312
313 /* Write back the journal superblock */
314 retval = io_channel_write_blk64(jfs->io,
315 ext2fs_journal_sb_start(fs->blocksize),
316 -SUPERBLOCK_SIZE, buf);
317 if (retval) {
318 com_err(program_name, retval,
319 "while writing journal superblock.");
320 goto no_valid_journal;
321 }
322
323 commit_remove_journal = 1;
324
325 no_valid_journal:
326 if (commit_remove_journal == 0) {
327 fputs(_("Cannot locate journal device. It was NOT removed\n"
328 "Use -f option to remove missing journal device.\n"),
329 stderr);
330 return 1;
331 }
332 fs->super->s_journal_dev = 0;
333 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
334 uuid_clear(fs->super->s_journal_uuid);
335 ext2fs_mark_super_dirty(fs);
336 fputs(_("Journal removed\n"), stdout);
337 free(journal_path);
338
339 return 0;
340 }
341
342 /* Helper function for remove_journal_inode */
343 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
344 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
345 blk64_t ref_block EXT2FS_ATTR((unused)),
346 int ref_offset EXT2FS_ATTR((unused)),
347 void *private EXT2FS_ATTR((unused)))
348 {
349 blk64_t block;
350 int group;
351
352 block = *blocknr;
353 ext2fs_unmark_block_bitmap2(fs->block_map, block);
354 group = ext2fs_group_of_blk2(fs, block);
355 ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
356 ext2fs_group_desc_csum_set(fs, group);
357 ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
358 return 0;
359 }
360
361 /*
362 * Remove the journal inode from the filesystem
363 */
364 static errcode_t remove_journal_inode(ext2_filsys fs)
365 {
366 struct ext2_inode inode;
367 errcode_t retval;
368 ino_t ino = fs->super->s_journal_inum;
369
370 retval = ext2fs_read_inode(fs, ino, &inode);
371 if (retval) {
372 com_err(program_name, retval, "%s",
373 _("while reading journal inode"));
374 return retval;
375 }
376 if (ino == EXT2_JOURNAL_INO) {
377 retval = ext2fs_read_bitmaps(fs);
378 if (retval) {
379 com_err(program_name, retval, "%s",
380 _("while reading bitmaps"));
381 return retval;
382 }
383 retval = ext2fs_block_iterate3(fs, ino,
384 BLOCK_FLAG_READ_ONLY, NULL,
385 release_blocks_proc, NULL);
386 if (retval) {
387 com_err(program_name, retval, "%s",
388 _("while clearing journal inode"));
389 return retval;
390 }
391 memset(&inode, 0, sizeof(inode));
392 ext2fs_mark_bb_dirty(fs);
393 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
394 } else
395 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
396 retval = ext2fs_write_inode(fs, ino, &inode);
397 if (retval) {
398 com_err(program_name, retval, "%s",
399 _("while writing journal inode"));
400 return retval;
401 }
402 fs->super->s_journal_inum = 0;
403 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
404 ext2fs_mark_super_dirty(fs);
405
406 return 0;
407 }
408
409 /*
410 * Update the default mount options
411 */
412 static int update_mntopts(ext2_filsys fs, char *mntopts)
413 {
414 struct ext2_super_block *sb = fs->super;
415
416 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
417 fprintf(stderr, _("Invalid mount option set: %s\n"),
418 mntopts);
419 return 1;
420 }
421 ext2fs_mark_super_dirty(fs);
422
423 return 0;
424 }
425
426 static void check_fsck_needed(ext2_filsys fs, const char *prompt)
427 {
428 /* Refuse to modify anything but a freshly checked valid filesystem. */
429 if (!(fs->super->s_state & EXT2_VALID_FS) ||
430 (fs->super->s_state & EXT2_ERROR_FS) ||
431 (fs->super->s_lastcheck < fs->super->s_mtime)) {
432 puts(_(fsck_explain));
433 puts(_(please_fsck));
434 if (mount_flags & EXT2_MF_READONLY)
435 printf("%s", _("(and reboot afterwards!)\n"));
436 exit(1);
437 }
438
439 /* Give the admin a few seconds to bail out of a dangerous op. */
440 if (!getenv("TUNE2FS_FORCE_PROMPT") && (!isatty(0) || !isatty(1)))
441 return;
442
443 puts(prompt);
444 proceed_question(5);
445 }
446
447 static void request_dir_fsck_afterwards(ext2_filsys fs)
448 {
449 static int requested;
450
451 if (requested++)
452 return;
453 fsck_requested++;
454 fs->super->s_state &= ~EXT2_VALID_FS;
455 puts(_(fsck_explain));
456 puts(_(please_dir_fsck));
457 if (mount_flags & EXT2_MF_READONLY)
458 printf("%s", _("(and reboot afterwards!)\n"));
459 }
460
461 static void request_fsck_afterwards(ext2_filsys fs)
462 {
463 static int requested = 0;
464
465 if (requested++)
466 return;
467 fsck_requested++;
468 fs->super->s_state &= ~EXT2_VALID_FS;
469 printf("\n%s\n", _(please_fsck));
470 if (mount_flags & EXT2_MF_READONLY)
471 printf("%s", _("(and reboot afterwards!)\n"));
472 }
473
474 static void convert_64bit(ext2_filsys fs, int direction)
475 {
476 /*
477 * Is resize2fs going to demand a fsck run? Might as well tell the
478 * user now.
479 */
480 if (!fsck_requested &&
481 ((fs->super->s_state & EXT2_ERROR_FS) ||
482 !(fs->super->s_state & EXT2_VALID_FS) ||
483 fs->super->s_lastcheck < fs->super->s_mtime))
484 request_fsck_afterwards(fs);
485 if (fsck_requested)
486 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
487 direction > 0 ? "-b" : "-s", fs->device_name);
488 else
489 fprintf(stderr, _("Please run `resize2fs %s %s"),
490 direction > 0 ? "-b" : "-s", fs->device_name);
491
492 if (undo_file)
493 fprintf(stderr, _(" -z \"%s\""), undo_file);
494 if (direction > 0)
495 fprintf(stderr, _("' to enable 64-bit mode.\n"));
496 else
497 fprintf(stderr, _("' to disable 64-bit mode.\n"));
498 }
499
500 /*
501 * Rewrite directory blocks with checksums
502 */
503 struct rewrite_dir_context {
504 char *buf;
505 errcode_t errcode;
506 ext2_ino_t dir;
507 int is_htree;
508 };
509
510 static int rewrite_dir_block(ext2_filsys fs,
511 blk64_t *blocknr,
512 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
513 blk64_t ref_block EXT2FS_ATTR((unused)),
514 int ref_offset EXT2FS_ATTR((unused)),
515 void *priv_data)
516 {
517 struct ext2_dx_countlimit *dcl = NULL;
518 struct rewrite_dir_context *ctx = priv_data;
519 int dcl_offset, changed = 0;
520
521 ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
522 ctx->dir);
523 if (ctx->errcode)
524 return BLOCK_ABORT;
525
526 /* if htree node... */
527 if (ctx->is_htree)
528 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
529 &dcl, &dcl_offset);
530 if (dcl) {
531 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
532 /* Ensure limit is the max size */
533 int max_entries = (fs->blocksize - dcl_offset) /
534 sizeof(struct ext2_dx_entry);
535 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
536 changed = 1;
537 dcl->limit = ext2fs_cpu_to_le16(max_entries);
538 }
539 } else {
540 /* If htree block is full then rebuild the dir */
541 if (ext2fs_le16_to_cpu(dcl->count) ==
542 ext2fs_le16_to_cpu(dcl->limit)) {
543 request_dir_fsck_afterwards(fs);
544 return 0;
545 }
546 /*
547 * Ensure dcl->limit is small enough to leave room for
548 * the checksum tail.
549 */
550 int max_entries = (fs->blocksize - (dcl_offset +
551 sizeof(struct ext2_dx_tail))) /
552 sizeof(struct ext2_dx_entry);
553 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
554 dcl->limit = ext2fs_cpu_to_le16(max_entries);
555 /* Always rewrite checksum */
556 changed = 1;
557 }
558 } else {
559 unsigned int rec_len, name_size;
560 char *top = ctx->buf + fs->blocksize;
561 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
562 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
563
564 /* Find last and penultimate dirent */
565 while ((char *)de < top) {
566 penultimate_de = last_de;
567 last_de = de;
568 ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
569 if (!ctx->errcode && !rec_len)
570 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
571 if (ctx->errcode)
572 return BLOCK_ABORT;
573 de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
574 }
575 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
576 if (ctx->errcode)
577 return BLOCK_ABORT;
578 name_size = ext2fs_dirent_name_len(last_de);
579
580 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
581 if (!penultimate_de)
582 return 0;
583 if (last_de->inode ||
584 name_size ||
585 rec_len != sizeof(struct ext2_dir_entry_tail))
586 return 0;
587 /*
588 * The last dirent is unused and the right length to
589 * have stored a checksum. Erase it.
590 */
591 ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
592 &rec_len);
593 if (!rec_len)
594 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
595 if (ctx->errcode)
596 return BLOCK_ABORT;
597 ext2fs_set_rec_len(fs, rec_len +
598 sizeof(struct ext2_dir_entry_tail),
599 penultimate_de);
600 changed = 1;
601 } else {
602 unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
603 struct ext2_dir_entry_tail *t;
604
605 /*
606 * If the last dirent looks like the tail, just update
607 * the checksum.
608 */
609 if (!last_de->inode &&
610 rec_len == csum_size) {
611 t = (struct ext2_dir_entry_tail *)last_de;
612 t->det_reserved_name_len =
613 EXT2_DIR_NAME_LEN_CSUM;
614 changed = 1;
615 goto out;
616 }
617 if (name_size & 3)
618 name_size = (name_size & ~3) + 4;
619 /* If there's not enough space for the tail, e2fsck */
620 if (rec_len <= (8 + name_size + csum_size)) {
621 request_dir_fsck_afterwards(fs);
622 return 0;
623 }
624 /* Shorten that last de and insert the tail */
625 ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
626 t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
627 ext2fs_initialize_dirent_tail(fs, t);
628
629 /* Always update checksum */
630 changed = 1;
631 }
632 }
633
634 out:
635 if (!changed)
636 return 0;
637
638 ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
639 0, ctx->dir);
640 if (ctx->errcode)
641 return BLOCK_ABORT;
642
643 return 0;
644 }
645
646 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
647 struct ext2_inode *inode)
648 {
649 errcode_t retval;
650 struct rewrite_dir_context ctx;
651
652 retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
653 if (retval)
654 return retval;
655
656 ctx.is_htree = (inode->i_flags & EXT2_INDEX_FL);
657 ctx.dir = dir;
658 ctx.errcode = 0;
659 retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
660 BLOCK_FLAG_DATA_ONLY,
661 0, rewrite_dir_block, &ctx);
662
663 ext2fs_free_mem(&ctx.buf);
664 if (retval)
665 return retval;
666
667 return ctx.errcode;
668 }
669
670 /*
671 * Context information that does not change across rewrite_one_inode()
672 * invocations.
673 */
674 struct rewrite_context {
675 ext2_filsys fs;
676 struct ext2_inode *zero_inode;
677 char *ea_buf;
678 int inode_size;
679 };
680
681 #define fatal_err(code, args...) \
682 do { \
683 com_err(__func__, code, args); \
684 exit(1); \
685 } while (0);
686
687 static void update_ea_inode_hash(struct rewrite_context *ctx, ext2_ino_t ino,
688 struct ext2_inode *inode)
689 {
690 errcode_t retval;
691 ext2_file_t file;
692 __u32 hash;
693
694 retval = ext2fs_file_open(ctx->fs, ino, 0, &file);
695 if (retval)
696 fatal_err(retval, "open ea_inode");
697 retval = ext2fs_file_read(file, ctx->ea_buf, inode->i_size,
698 NULL);
699 if (retval)
700 fatal_err(retval, "read ea_inode");
701 retval = ext2fs_file_close(file);
702 if (retval)
703 fatal_err(retval, "close ea_inode");
704
705 hash = ext2fs_crc32c_le(ctx->fs->csum_seed,
706 (unsigned char *) ctx->ea_buf, inode->i_size);
707 ext2fs_set_ea_inode_hash(inode, hash);
708 }
709
710 static int update_xattr_entry_hashes(ext2_filsys fs,
711 struct ext2_ext_attr_entry *entry,
712 struct ext2_ext_attr_entry *end)
713 {
714 int modified = 0;
715 errcode_t retval;
716
717 while (entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry)) {
718 if (entry->e_value_inum) {
719 retval = ext2fs_ext_attr_hash_entry2(fs, entry, NULL,
720 &entry->e_hash);
721 if (retval)
722 fatal_err(retval, "hash ea_inode entry");
723 modified = 1;
724 }
725 entry = EXT2_EXT_ATTR_NEXT(entry);
726 }
727 return modified;
728 }
729
730 static void update_inline_xattr_hashes(struct rewrite_context *ctx,
731 struct ext2_inode_large *inode)
732 {
733 struct ext2_ext_attr_entry *start, *end;
734 __u32 *ea_magic;
735
736 if (inode->i_extra_isize == 0)
737 return;
738
739 if (inode->i_extra_isize & 3 ||
740 inode->i_extra_isize > ctx->inode_size - EXT2_GOOD_OLD_INODE_SIZE)
741 fatal_err(EXT2_ET_INODE_CORRUPTED, "bad i_extra_isize")
742
743 ea_magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
744 inode->i_extra_isize);
745 if (*ea_magic != EXT2_EXT_ATTR_MAGIC)
746 return;
747
748 start = (struct ext2_ext_attr_entry *)(ea_magic + 1);
749 end = (struct ext2_ext_attr_entry *)((char *)inode + ctx->inode_size);
750
751 update_xattr_entry_hashes(ctx->fs, start, end);
752 }
753
754 static void update_block_xattr_hashes(struct rewrite_context *ctx,
755 char *block_buf)
756 {
757 struct ext2_ext_attr_header *header;
758 struct ext2_ext_attr_entry *start, *end;
759
760 header = (struct ext2_ext_attr_header *)block_buf;
761 if (header->h_magic != EXT2_EXT_ATTR_MAGIC)
762 return;
763
764 start = (struct ext2_ext_attr_entry *)(header+1);
765 end = (struct ext2_ext_attr_entry *)(block_buf + ctx->fs->blocksize);
766
767 if (update_xattr_entry_hashes(ctx->fs, start, end))
768 ext2fs_ext_attr_block_rehash(header, end);
769 }
770
771 static void rewrite_one_inode(struct rewrite_context *ctx, ext2_ino_t ino,
772 struct ext2_inode *inode)
773 {
774 blk64_t file_acl_block;
775 errcode_t retval;
776
777 if (!ext2fs_test_inode_bitmap2(ctx->fs->inode_map, ino)) {
778 if (!memcmp(inode, ctx->zero_inode, ctx->inode_size))
779 return;
780 memset(inode, 0, ctx->inode_size);
781 }
782
783 if (inode->i_flags & EXT4_EA_INODE_FL)
784 update_ea_inode_hash(ctx, ino, inode);
785
786 if (ctx->inode_size != EXT2_GOOD_OLD_INODE_SIZE)
787 update_inline_xattr_hashes(ctx,
788 (struct ext2_inode_large *)inode);
789
790 retval = ext2fs_write_inode_full(ctx->fs, ino, inode, ctx->inode_size);
791 if (retval)
792 fatal_err(retval, "while writing inode");
793
794 retval = ext2fs_fix_extents_checksums(ctx->fs, ino, inode);
795 if (retval)
796 fatal_err(retval, "while rewriting extents");
797
798 if (LINUX_S_ISDIR(inode->i_mode) &&
799 ext2fs_inode_has_valid_blocks2(ctx->fs, inode)) {
800 retval = rewrite_directory(ctx->fs, ino, inode);
801 if (retval)
802 fatal_err(retval, "while rewriting directories");
803 }
804
805 file_acl_block = ext2fs_file_acl_block(ctx->fs, inode);
806 if (!file_acl_block)
807 return;
808
809 retval = ext2fs_read_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
810 ino);
811 if (retval)
812 fatal_err(retval, "while rewriting extended attribute");
813
814 update_block_xattr_hashes(ctx, ctx->ea_buf);
815 retval = ext2fs_write_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
816 ino);
817 if (retval)
818 fatal_err(retval, "while rewriting extended attribute");
819 }
820
821 /*
822 * Forcibly set checksums in all inodes.
823 */
824 static void rewrite_inodes(ext2_filsys fs)
825 {
826 ext2_inode_scan scan;
827 errcode_t retval;
828 ext2_ino_t ino;
829 struct ext2_inode *inode;
830 int pass;
831 struct rewrite_context ctx = {
832 .fs = fs,
833 .inode_size = EXT2_INODE_SIZE(fs->super),
834 };
835
836 if (fs->super->s_creator_os == EXT2_OS_HURD)
837 return;
838
839 retval = ext2fs_get_mem(ctx.inode_size, &inode);
840 if (retval)
841 fatal_err(retval, "while allocating memory");
842
843 retval = ext2fs_get_memzero(ctx.inode_size, &ctx.zero_inode);
844 if (retval)
845 fatal_err(retval, "while allocating memory");
846
847 retval = ext2fs_get_mem(64 * 1024, &ctx.ea_buf);
848 if (retval)
849 fatal_err(retval, "while allocating memory");
850
851 /*
852 * Extended attribute inodes have a lookup hash that needs to be
853 * recalculated with the new csum_seed. Other inodes referencing xattr
854 * inodes need this value to be up to date. That's why we do two passes:
855 *
856 * pass 1: update xattr inodes to update their lookup hash as well as
857 * other checksums.
858 *
859 * pass 2: go over other inodes to update their checksums.
860 */
861 if (ext2fs_has_feature_ea_inode(fs->super))
862 pass = 1;
863 else
864 pass = 2;
865 for (;pass <= 2; pass++) {
866 retval = ext2fs_open_inode_scan(fs, 0, &scan);
867 if (retval)
868 fatal_err(retval, "while opening inode scan");
869
870 do {
871 retval = ext2fs_get_next_inode_full(scan, &ino, inode,
872 ctx.inode_size);
873 if (retval)
874 fatal_err(retval, "while getting next inode");
875 if (!ino)
876 break;
877
878 if (((pass == 1) &&
879 (inode->i_flags & EXT4_EA_INODE_FL)) ||
880 ((pass == 2) &&
881 !(inode->i_flags & EXT4_EA_INODE_FL)))
882 rewrite_one_inode(&ctx, ino, inode);
883 } while (ino);
884
885 ext2fs_close_inode_scan(scan);
886 }
887
888 ext2fs_free_mem(&ctx.zero_inode);
889 ext2fs_free_mem(&ctx.ea_buf);
890 ext2fs_free_mem(&inode);
891 }
892
893 static void rewrite_metadata_checksums(ext2_filsys fs)
894 {
895 errcode_t retval;
896 dgrp_t i;
897
898 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
899 ext2fs_init_csum_seed(fs);
900 for (i = 0; i < fs->group_desc_count; i++)
901 ext2fs_group_desc_csum_set(fs, i);
902 retval = ext2fs_read_bitmaps(fs);
903 if (retval)
904 fatal_err(retval, "while reading bitmaps");
905 rewrite_inodes(fs);
906 ext2fs_mark_ib_dirty(fs);
907 ext2fs_mark_bb_dirty(fs);
908 ext2fs_mmp_update2(fs, 1);
909 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
910 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
911 if (ext2fs_has_feature_metadata_csum(fs->super))
912 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
913 else
914 fs->super->s_checksum_type = 0;
915 ext2fs_mark_super_dirty(fs);
916 }
917
918 static void enable_uninit_bg(ext2_filsys fs)
919 {
920 struct ext2_group_desc *gd;
921 dgrp_t i;
922
923 for (i = 0; i < fs->group_desc_count; i++) {
924 gd = ext2fs_group_desc(fs, fs->group_desc, i);
925 gd->bg_itable_unused = 0;
926 gd->bg_flags = EXT2_BG_INODE_ZEROED;
927 ext2fs_group_desc_csum_set(fs, i);
928 }
929 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
930 }
931
932 static errcode_t zero_empty_inodes(ext2_filsys fs)
933 {
934 int length = EXT2_INODE_SIZE(fs->super);
935 struct ext2_inode *inode = NULL;
936 ext2_inode_scan scan;
937 errcode_t retval;
938 ext2_ino_t ino;
939
940 retval = ext2fs_open_inode_scan(fs, 0, &scan);
941 if (retval)
942 goto out;
943
944 retval = ext2fs_get_mem(length, &inode);
945 if (retval)
946 goto out;
947
948 do {
949 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
950 if (retval)
951 goto out;
952 if (!ino)
953 break;
954 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
955 memset(inode, 0, length);
956 retval = ext2fs_write_inode_full(fs, ino, inode,
957 length);
958 if (retval)
959 goto out;
960 }
961 } while (1);
962
963 out:
964 ext2fs_free_mem(&inode);
965 ext2fs_close_inode_scan(scan);
966 return retval;
967 }
968
969 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
970 {
971 struct ext2_group_desc *gd;
972 dgrp_t i;
973 errcode_t retval;
974 blk64_t b, c, d;
975
976 /* Load bitmaps to ensure that the uninit ones get written out */
977 fs->super->s_feature_ro_compat |= csum_feature_flag;
978 retval = ext2fs_read_bitmaps(fs);
979 fs->super->s_feature_ro_compat &= ~csum_feature_flag;
980 if (retval) {
981 com_err("disable_uninit_bg", retval,
982 "while reading bitmaps");
983 request_fsck_afterwards(fs);
984 return retval;
985 }
986 ext2fs_mark_ib_dirty(fs);
987 ext2fs_mark_bb_dirty(fs);
988
989 /* If we're only turning off uninit_bg, zero the inodes */
990 if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
991 retval = zero_empty_inodes(fs);
992 if (retval) {
993 com_err("disable_uninit_bg", retval,
994 "while zeroing unused inodes");
995 request_fsck_afterwards(fs);
996 return retval;
997 }
998 }
999
1000 /* The bbitmap is zeroed; we must mark group metadata blocks in use */
1001 for (i = 0; i < fs->group_desc_count; i++) {
1002 b = ext2fs_block_bitmap_loc(fs, i);
1003 ext2fs_mark_block_bitmap2(fs->block_map, b);
1004 b = ext2fs_inode_bitmap_loc(fs, i);
1005 ext2fs_mark_block_bitmap2(fs->block_map, b);
1006
1007 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
1008 if (retval == 0 && b)
1009 ext2fs_mark_block_bitmap2(fs->block_map, b);
1010 if (retval == 0 && c)
1011 ext2fs_mark_block_bitmap2(fs->block_map, c);
1012 if (retval == 0 && d)
1013 ext2fs_mark_block_bitmap2(fs->block_map, d);
1014 if (retval) {
1015 com_err("disable_uninit_bg", retval,
1016 "while initializing block bitmaps");
1017 request_fsck_afterwards(fs);
1018 }
1019
1020 gd = ext2fs_group_desc(fs, fs->group_desc, i);
1021 gd->bg_itable_unused = 0;
1022 gd->bg_flags = 0;
1023 ext2fs_group_desc_csum_set(fs, i);
1024 }
1025 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1026 ext2fs_mark_super_dirty(fs);
1027
1028 return 0;
1029 }
1030
1031 static void
1032 try_confirm_csum_seed_support(void)
1033 {
1034 if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK))
1035 fputs(_("WARNING: Could not confirm kernel support for "
1036 "metadata_csum_seed.\n This requires Linux >= "
1037 "v4.4.\n"), stderr);
1038 }
1039
1040 /*
1041 * Update the feature set as provided by the user.
1042 */
1043 static int update_feature_set(ext2_filsys fs, char *features)
1044 {
1045 struct ext2_super_block *sb = fs->super;
1046 __u32 old_features[3];
1047 int type_err;
1048 unsigned int mask_err;
1049 errcode_t err;
1050 enum quota_type qtype;
1051
1052 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
1053 ((&sb->s_feature_compat)[(type)] & (mask)))
1054 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
1055 !((&sb->s_feature_compat)[(type)] & (mask)))
1056 #define FEATURE_CHANGED(type, mask) ((mask) & \
1057 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
1058
1059 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
1060 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
1061 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
1062
1063 if (e2p_edit_feature2(features, &sb->s_feature_compat,
1064 ok_features, clear_ok_features,
1065 &type_err, &mask_err)) {
1066 if (!mask_err)
1067 fprintf(stderr,
1068 _("Invalid filesystem option set: %s\n"),
1069 features);
1070 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
1071 fprintf(stderr, _("Clearing filesystem feature '%s' "
1072 "not supported.\n"),
1073 e2p_feature2string(type_err &
1074 E2P_FEATURE_TYPE_MASK,
1075 mask_err));
1076 else
1077 fprintf(stderr, _("Setting filesystem feature '%s' "
1078 "not supported.\n"),
1079 e2p_feature2string(type_err, mask_err));
1080 return 1;
1081 }
1082
1083 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1084 if ((mount_flags & EXT2_MF_MOUNTED) &&
1085 !(mount_flags & EXT2_MF_READONLY)) {
1086 fputs(_("The has_journal feature may only be "
1087 "cleared when the filesystem is\n"
1088 "unmounted or mounted "
1089 "read-only.\n"), stderr);
1090 return 1;
1091 }
1092 if (ext2fs_has_feature_journal_needs_recovery(sb) &&
1093 f_flag < 2) {
1094 fputs(_("The needs_recovery flag is set. "
1095 "Please run e2fsck before clearing\n"
1096 "the has_journal flag.\n"), stderr);
1097 return 1;
1098 }
1099 if (sb->s_journal_inum) {
1100 if (remove_journal_inode(fs))
1101 return 1;
1102 }
1103 if (sb->s_journal_dev) {
1104 if (remove_journal_device(fs))
1105 return 1;
1106 }
1107 }
1108
1109 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1110 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1111 if (ext2fs_has_feature_meta_bg(sb)) {
1112 fputs(_("Setting filesystem feature 'sparse_super' "
1113 "not supported\nfor filesystems with "
1114 "the meta_bg feature enabled.\n"),
1115 stderr);
1116 return 1;
1117 }
1118 }
1119
1120 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1121 int error;
1122
1123 if ((mount_flags & EXT2_MF_MOUNTED) ||
1124 (mount_flags & EXT2_MF_READONLY)) {
1125 fputs(_("The multiple mount protection feature can't\n"
1126 "be set if the filesystem is mounted or\n"
1127 "read-only.\n"), stderr);
1128 return 1;
1129 }
1130
1131 error = ext2fs_mmp_init(fs);
1132 if (error) {
1133 fputs(_("\nError while enabling multiple mount "
1134 "protection feature."), stderr);
1135 return 1;
1136 }
1137
1138 /*
1139 * We want to update group desc with the new free blocks count
1140 */
1141 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1142
1143 printf(_("Multiple mount protection has been enabled "
1144 "with update interval %ds.\n"),
1145 sb->s_mmp_update_interval);
1146 }
1147
1148 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1149 int error;
1150
1151 if (mount_flags & EXT2_MF_READONLY) {
1152 fputs(_("The multiple mount protection feature cannot\n"
1153 "be disabled if the filesystem is readonly.\n"),
1154 stderr);
1155 return 1;
1156 }
1157
1158 error = ext2fs_read_bitmaps(fs);
1159 if (error) {
1160 fputs(_("Error while reading bitmaps\n"), stderr);
1161 return 1;
1162 }
1163
1164 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1165 if (error) {
1166 struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1167
1168 if (error == EXT2_ET_MMP_MAGIC_INVALID)
1169 printf(_("Magic number in MMP block does not "
1170 "match. expected: %x, actual: %x\n"),
1171 EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1172 else
1173 com_err(program_name, error, "%s",
1174 _("while reading MMP block."));
1175 goto mmp_error;
1176 }
1177
1178 /* We need to force out the group descriptors as well */
1179 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1180 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1181 mmp_error:
1182 sb->s_mmp_block = 0;
1183 sb->s_mmp_update_interval = 0;
1184 }
1185
1186 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1187 /*
1188 * If adding a journal flag, let the create journal
1189 * code below handle setting the flag and creating the
1190 * journal. We supply a default size if necessary.
1191 */
1192 if (!journal_size)
1193 journal_size = -1;
1194 ext2fs_clear_feature_journal(sb);
1195 }
1196
1197 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1198 if (!sb->s_def_hash_version)
1199 sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1200 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1201 uuid_generate((unsigned char *) sb->s_hash_seed);
1202 }
1203
1204 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1205 if (ext2fs_check_desc(fs)) {
1206 fputs(_("Clearing the flex_bg flag would "
1207 "cause the the filesystem to be\n"
1208 "inconsistent.\n"), stderr);
1209 return 1;
1210 }
1211 }
1212
1213 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1214 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1215 if ((mount_flags & EXT2_MF_MOUNTED) &&
1216 !(mount_flags & EXT2_MF_READONLY)) {
1217 fputs(_("The huge_file feature may only be "
1218 "cleared when the filesystem is\n"
1219 "unmounted or mounted "
1220 "read-only.\n"), stderr);
1221 return 1;
1222 }
1223 }
1224
1225 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1226 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1227 check_fsck_needed(fs,
1228 _("Enabling checksums could take some time."));
1229 if (mount_flags & EXT2_MF_MOUNTED) {
1230 fputs(_("Cannot enable metadata_csum on a mounted "
1231 "filesystem!\n"), stderr);
1232 exit(1);
1233 }
1234 if (!ext2fs_has_feature_extents(fs->super))
1235 printf("%s",
1236 _("Extents are not enabled. The file extent "
1237 "tree can be checksummed, whereas block maps "
1238 "cannot. Not enabling extents reduces the "
1239 "coverage of metadata checksumming. "
1240 "Re-run with -O extent to rectify.\n"));
1241 if (!ext2fs_has_feature_64bit(fs->super))
1242 printf("%s",
1243 _("64-bit filesystem support is not enabled. "
1244 "The larger fields afforded by this feature "
1245 "enable full-strength checksumming. "
1246 "Run resize2fs -b to rectify.\n"));
1247 rewrite_checksums = 1;
1248 /* metadata_csum supersedes uninit_bg */
1249 ext2fs_clear_feature_gdt_csum(fs->super);
1250
1251 /* if uninit_bg was previously off, rewrite group desc */
1252 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1253 EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1254 enable_uninit_bg(fs);
1255
1256 /*
1257 * Since metadata_csum supersedes uninit_bg, pretend like
1258 * uninit_bg has been off all along.
1259 */
1260 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1261 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1262 }
1263
1264 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1265 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1266 __u32 test_features[3];
1267
1268 check_fsck_needed(fs,
1269 _("Disabling checksums could take some time."));
1270 if (mount_flags & EXT2_MF_MOUNTED) {
1271 fputs(_("Cannot disable metadata_csum on a mounted "
1272 "filesystem!\n"), stderr);
1273 exit(1);
1274 }
1275 rewrite_checksums = 1;
1276
1277 /* Enable uninit_bg unless the user expressly turned it off */
1278 memcpy(test_features, old_features, sizeof(test_features));
1279 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1280 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1281 e2p_edit_feature2(features, test_features, ok_features,
1282 clear_ok_features, NULL, NULL);
1283 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1284 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1285 ext2fs_set_feature_gdt_csum(fs->super);
1286
1287 /*
1288 * If we're turning off metadata_csum and not turning on
1289 * uninit_bg, rewrite group desc.
1290 */
1291 if (!ext2fs_has_feature_gdt_csum(fs->super)) {
1292 err = disable_uninit_bg(fs,
1293 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1294 if (err)
1295 return 1;
1296 } else
1297 /*
1298 * metadata_csum previously provided uninit_bg, so if
1299 * we're also setting the uninit_bg feature bit,
1300 * pretend like it was previously enabled. Checksums
1301 * will be rewritten with crc16 later.
1302 */
1303 old_features[E2P_FEATURE_RO_INCOMPAT] |=
1304 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1305 fs->super->s_checksum_seed = 0;
1306 ext2fs_clear_feature_csum_seed(fs->super);
1307 }
1308
1309 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1310 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1311 /* Do not enable uninit_bg when metadata_csum enabled */
1312 if (ext2fs_has_feature_metadata_csum(fs->super))
1313 ext2fs_clear_feature_gdt_csum(fs->super);
1314 else
1315 enable_uninit_bg(fs);
1316 }
1317
1318 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1319 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1320 err = disable_uninit_bg(fs,
1321 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1322 if (err)
1323 return 1;
1324 }
1325
1326 /*
1327 * We don't actually toggle 64bit; resize2fs does that. But this
1328 * must come after the metadata_csum feature_on so that it won't
1329 * complain about the lack of 64bit.
1330 */
1331 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1332 EXT4_FEATURE_INCOMPAT_64BIT)) {
1333 if (mount_flags & EXT2_MF_MOUNTED) {
1334 fprintf(stderr, _("Cannot enable 64-bit mode "
1335 "while mounted!\n"));
1336 exit(1);
1337 }
1338 ext2fs_clear_feature_64bit(sb);
1339 feature_64bit = 1;
1340 }
1341 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1342 EXT4_FEATURE_INCOMPAT_64BIT)) {
1343 if (mount_flags & EXT2_MF_MOUNTED) {
1344 fprintf(stderr, _("Cannot disable 64-bit mode "
1345 "while mounted!\n"));
1346 exit(1);
1347 }
1348 ext2fs_set_feature_64bit(sb);
1349 feature_64bit = -1;
1350 }
1351
1352 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1353 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1354 /*
1355 * Set the Q_flag here and handle the quota options in the code
1356 * below.
1357 */
1358 if (!Q_flag) {
1359 Q_flag = 1;
1360 /* Enable usr/grp quota by default */
1361 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1362 if (qtype != PRJQUOTA)
1363 quota_enable[qtype] = QOPT_ENABLE;
1364 else
1365 quota_enable[qtype] = QOPT_DISABLE;
1366 }
1367 }
1368 ext2fs_clear_feature_quota(sb);
1369 }
1370
1371 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1372 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1373 if (fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1374 fprintf(stderr, _("Cannot enable project feature; "
1375 "inode size too small.\n"));
1376 exit(1);
1377 }
1378 Q_flag = 1;
1379 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1380 }
1381
1382 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1383 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1384 Q_flag = 1;
1385 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1386 }
1387
1388 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1389 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1390 /*
1391 * Set the Q_flag here and handle the quota options in the code
1392 * below.
1393 */
1394 if (Q_flag)
1395 fputs(_("\nWarning: '^quota' option overrides '-Q'"
1396 "arguments.\n"), stderr);
1397 Q_flag = 1;
1398 /* Disable all quota by default */
1399 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1400 quota_enable[qtype] = QOPT_DISABLE;
1401 }
1402
1403 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1404 if (ext2fs_has_feature_casefold(sb)) {
1405 fputs(_("Cannot enable encrypt feature on filesystems "
1406 "with the encoding feature enabled.\n"),
1407 stderr);
1408 return 1;
1409 }
1410 fs->super->s_encrypt_algos[0] =
1411 EXT4_ENCRYPTION_MODE_AES_256_XTS;
1412 fs->super->s_encrypt_algos[1] =
1413 EXT4_ENCRYPTION_MODE_AES_256_CTS;
1414 }
1415
1416 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1417 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1418 if (!ext2fs_has_feature_metadata_csum(sb)) {
1419 fputs(_("Setting feature 'metadata_csum_seed' "
1420 "is only supported\non filesystems with "
1421 "the metadata_csum feature enabled.\n"),
1422 stderr);
1423 return 1;
1424 }
1425 try_confirm_csum_seed_support();
1426 fs->super->s_checksum_seed = fs->csum_seed;
1427 }
1428
1429 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1430 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1431 __le32 uuid_seed;
1432
1433 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1434 sizeof(fs->super->s_uuid));
1435 if (fs->super->s_checksum_seed != uuid_seed) {
1436 if (mount_flags & (EXT2_MF_BUSY|EXT2_MF_MOUNTED)) {
1437 fputs(_("UUID has changed since enabling "
1438 "metadata_csum. Filesystem must be unmounted "
1439 "\nto safely rewrite all metadata to match the new UUID.\n"),
1440 stderr);
1441 return 1;
1442 }
1443 check_fsck_needed(fs, _("Recalculating checksums "
1444 "could take some time."));
1445 rewrite_checksums = 1;
1446 }
1447 }
1448
1449 if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1450 (sb->s_feature_compat || sb->s_feature_ro_compat ||
1451 sb->s_feature_incompat))
1452 ext2fs_update_dynamic_rev(fs);
1453
1454 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1455 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1456 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1457 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1458 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1459 EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1460 FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1461 EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1462 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1463 EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1464 request_fsck_afterwards(fs);
1465
1466 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1467 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1468 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1469 ext2fs_mark_super_dirty(fs);
1470
1471 return 0;
1472 }
1473
1474 /*
1475 * Add a journal to the filesystem.
1476 */
1477 static int add_journal(ext2_filsys fs)
1478 {
1479 unsigned long journal_blocks;
1480 errcode_t retval;
1481 ext2_filsys jfs;
1482 io_manager io_ptr;
1483
1484 if (ext2fs_has_feature_journal(fs->super)) {
1485 fputs(_("The filesystem already has a journal.\n"), stderr);
1486 goto err;
1487 }
1488 if (journal_device) {
1489 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1490 NULL))
1491 proceed_question(-1);
1492 check_mount(journal_device, 0, _("journal"));
1493 #ifdef CONFIG_TESTIO_DEBUG
1494 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1495 io_ptr = test_io_manager;
1496 test_io_backing_manager = unix_io_manager;
1497 } else
1498 #endif
1499 io_ptr = unix_io_manager;
1500 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1501 EXT2_FLAG_JOURNAL_DEV_OK, 0,
1502 fs->blocksize, io_ptr, &jfs);
1503 if (retval) {
1504 com_err(program_name, retval,
1505 _("\n\twhile trying to open journal on %s\n"),
1506 journal_device);
1507 goto err;
1508 }
1509 printf(_("Creating journal on device %s: "),
1510 journal_device);
1511 fflush(stdout);
1512
1513 retval = ext2fs_add_journal_device(fs, jfs);
1514 ext2fs_close_free(&jfs);
1515 if (retval) {
1516 com_err(program_name, retval,
1517 _("while adding filesystem to journal on %s"),
1518 journal_device);
1519 goto err;
1520 }
1521 fputs(_("done\n"), stdout);
1522 } else if (journal_size) {
1523 fputs(_("Creating journal inode: "), stdout);
1524 fflush(stdout);
1525 journal_blocks = figure_journal_size(journal_size, fs);
1526
1527 if (journal_location_string)
1528 journal_location =
1529 parse_num_blocks2(journal_location_string,
1530 fs->super->s_log_block_size);
1531 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
1532 journal_location,
1533 journal_flags);
1534 if (retval) {
1535 fprintf(stderr, "\n");
1536 com_err(program_name, retval, "%s",
1537 _("\n\twhile trying to create journal file"));
1538 return retval;
1539 } else
1540 fputs(_("done\n"), stdout);
1541 /*
1542 * If the filesystem wasn't mounted, we need to force
1543 * the block group descriptors out.
1544 */
1545 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1546 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1547 }
1548 print_check_message(fs->super->s_max_mnt_count,
1549 fs->super->s_checkinterval);
1550 return 0;
1551
1552 err:
1553 free(journal_device);
1554 return 1;
1555 }
1556
1557 static void handle_quota_options(ext2_filsys fs)
1558 {
1559 errcode_t retval;
1560 quota_ctx_t qctx;
1561 ext2_ino_t qf_ino;
1562 enum quota_type qtype;
1563 unsigned int qtype_bits = 0;
1564 int need_dirty = 0;
1565
1566 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1567 if (quota_enable[qtype] != 0)
1568 break;
1569 if (qtype == MAXQUOTAS)
1570 /* Nothing to do. */
1571 return;
1572
1573 if (quota_enable[PRJQUOTA] == QOPT_ENABLE &&
1574 fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1575 fprintf(stderr, _("Cannot enable project quota; "
1576 "inode size too small.\n"));
1577 exit(1);
1578 }
1579
1580 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1581 if (quota_enable[qtype] == QOPT_ENABLE)
1582 qtype_bits |= 1 << qtype;
1583 }
1584
1585 retval = quota_init_context(&qctx, fs, qtype_bits);
1586 if (retval) {
1587 com_err(program_name, retval,
1588 _("while initializing quota context in support library"));
1589 exit(1);
1590 }
1591
1592 if (qtype_bits)
1593 quota_compute_usage(qctx);
1594
1595 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1596 if (quota_enable[qtype] == QOPT_ENABLE &&
1597 *quota_sb_inump(fs->super, qtype) == 0) {
1598 if ((qf_ino = quota_file_exists(fs, qtype)) > 0) {
1599 retval = quota_update_limits(qctx, qf_ino,
1600 qtype);
1601 if (retval) {
1602 com_err(program_name, retval,
1603 _("while updating quota limits (%d)"),
1604 qtype);
1605 exit(1);
1606 }
1607 }
1608 retval = quota_write_inode(qctx, 1 << qtype);
1609 if (retval) {
1610 com_err(program_name, retval,
1611 _("while writing quota file (%d)"),
1612 qtype);
1613 exit(1);
1614 }
1615 /* Enable Quota feature if one of quota enabled */
1616 if (!ext2fs_has_feature_quota(fs->super)) {
1617 ext2fs_set_feature_quota(fs->super);
1618 need_dirty = 1;
1619 }
1620 if (qtype == PRJQUOTA &&
1621 !ext2fs_has_feature_project(fs->super)) {
1622 ext2fs_set_feature_project(fs->super);
1623 need_dirty = 1;
1624 }
1625 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1626 retval = quota_remove_inode(fs, qtype);
1627 if (retval) {
1628 com_err(program_name, retval,
1629 _("while removing quota file (%d)"),
1630 qtype);
1631 exit(1);
1632 }
1633 if (qtype == PRJQUOTA) {
1634 ext2fs_clear_feature_project(fs->super);
1635 need_dirty = 1;
1636 }
1637 }
1638 }
1639
1640 quota_release_context(&qctx);
1641 /* Clear Quota feature if all quota types disabled. */
1642 if (!qtype_bits) {
1643 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1644 if (*quota_sb_inump(fs->super, qtype))
1645 break;
1646 if (qtype == MAXQUOTAS) {
1647 ext2fs_clear_feature_quota(fs->super);
1648 need_dirty = 1;
1649 }
1650
1651 }
1652 if (need_dirty)
1653 ext2fs_mark_super_dirty(fs);
1654 return;
1655 }
1656
1657 static int option_handle_function(char *token)
1658 {
1659 if (strncmp(token, "usr", 3) == 0) {
1660 quota_enable[USRQUOTA] = QOPT_ENABLE;
1661 } else if (strncmp(token, "^usr", 4) == 0) {
1662 quota_enable[USRQUOTA] = QOPT_DISABLE;
1663 } else if (strncmp(token, "grp", 3) == 0) {
1664 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1665 } else if (strncmp(token, "^grp", 4) == 0) {
1666 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1667 } else if (strncmp(token, "prj", 3) == 0) {
1668 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1669 } else if (strncmp(token, "^prj", 4) == 0) {
1670 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1671 } else {
1672 fputs(_("\nBad quota options specified.\n\n"
1673 "Following valid quota options are available "
1674 "(pass by separating with comma):\n"
1675 "\t[^]usr[quota]\n"
1676 "\t[^]grp[quota]\n"
1677 "\t[^]prj[quota]\n"
1678 "\n\n"), stderr);
1679 return 1;
1680 }
1681 return 0;
1682 }
1683
1684 static void parse_e2label_options(int argc, char ** argv)
1685 {
1686 if ((argc < 2) || (argc > 3)) {
1687 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1688 exit(1);
1689 }
1690 io_options = strchr(argv[1], '?');
1691 if (io_options)
1692 *io_options++ = 0;
1693 device_name = blkid_get_devname(NULL, argv[1], NULL);
1694 if (!device_name) {
1695 com_err("e2label", 0, _("Unable to resolve '%s'"),
1696 argv[1]);
1697 exit(1);
1698 }
1699 open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
1700 if (argc == 3) {
1701 open_flag |= EXT2_FLAG_RW;
1702 L_flag = 1;
1703 new_label = argv[2];
1704 } else
1705 print_label++;
1706 }
1707
1708 static time_t parse_time(char *str)
1709 {
1710 struct tm ts;
1711
1712 if (strcmp(str, "now") == 0) {
1713 return (time(0));
1714 }
1715 memset(&ts, 0, sizeof(ts));
1716 #ifdef HAVE_STRPTIME
1717 strptime(str, "%Y%m%d%H%M%S", &ts);
1718 #else
1719 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1720 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1721 ts.tm_year -= 1900;
1722 ts.tm_mon -= 1;
1723 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1724 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1725 ts.tm_min > 59 || ts.tm_sec > 61)
1726 ts.tm_mday = 0;
1727 #endif
1728 if (ts.tm_mday == 0) {
1729 com_err(program_name, 0,
1730 _("Couldn't parse date/time specifier: %s"),
1731 str);
1732 usage();
1733 }
1734 ts.tm_isdst = -1;
1735 return (mktime(&ts));
1736 }
1737
1738 static void parse_tune2fs_options(int argc, char **argv)
1739 {
1740 int c;
1741 char *tmp;
1742 struct group *gr;
1743 struct passwd *pw;
1744 int ret;
1745 char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1746
1747 open_flag = 0;
1748 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1749 while ((c = getopt(argc, argv, optstring)) != EOF)
1750 switch (c) {
1751 case 'c':
1752 max_mount_count = strtol(optarg, &tmp, 0);
1753 if (*tmp || max_mount_count > 16000) {
1754 com_err(program_name, 0,
1755 _("bad mounts count - %s"),
1756 optarg);
1757 usage();
1758 }
1759 if (max_mount_count == 0)
1760 max_mount_count = -1;
1761 c_flag = 1;
1762 open_flag = EXT2_FLAG_RW;
1763 break;
1764 case 'C':
1765 mount_count = strtoul(optarg, &tmp, 0);
1766 if (*tmp || mount_count > 16000) {
1767 com_err(program_name, 0,
1768 _("bad mounts count - %s"),
1769 optarg);
1770 usage();
1771 }
1772 C_flag = 1;
1773 open_flag = EXT2_FLAG_RW;
1774 break;
1775 case 'e':
1776 if (strcmp(optarg, "continue") == 0)
1777 errors = EXT2_ERRORS_CONTINUE;
1778 else if (strcmp(optarg, "remount-ro") == 0)
1779 errors = EXT2_ERRORS_RO;
1780 else if (strcmp(optarg, "panic") == 0)
1781 errors = EXT2_ERRORS_PANIC;
1782 else {
1783 com_err(program_name, 0,
1784 _("bad error behavior - %s"),
1785 optarg);
1786 usage();
1787 }
1788 e_flag = 1;
1789 open_flag = EXT2_FLAG_RW;
1790 break;
1791 case 'E':
1792 extended_cmd = optarg;
1793 open_flag |= EXT2_FLAG_RW;
1794 break;
1795 case 'f': /* Force */
1796 f_flag++;
1797 break;
1798 case 'g':
1799 resgid = strtoul(optarg, &tmp, 0);
1800 if (*tmp) {
1801 gr = getgrnam(optarg);
1802 if (gr == NULL)
1803 tmp = optarg;
1804 else {
1805 resgid = gr->gr_gid;
1806 *tmp = 0;
1807 }
1808 }
1809 if (*tmp) {
1810 com_err(program_name, 0,
1811 _("bad gid/group name - %s"),
1812 optarg);
1813 usage();
1814 }
1815 g_flag = 1;
1816 open_flag = EXT2_FLAG_RW;
1817 break;
1818 case 'i':
1819 interval = strtoul(optarg, &tmp, 0);
1820 switch (*tmp) {
1821 case 's':
1822 tmp++;
1823 break;
1824 case '\0':
1825 case 'd':
1826 case 'D': /* days */
1827 interval *= 86400;
1828 if (*tmp != '\0')
1829 tmp++;
1830 break;
1831 case 'm':
1832 case 'M': /* months! */
1833 interval *= 86400 * 30;
1834 tmp++;
1835 break;
1836 case 'w':
1837 case 'W': /* weeks */
1838 interval *= 86400 * 7;
1839 tmp++;
1840 break;
1841 }
1842 if (*tmp) {
1843 com_err(program_name, 0,
1844 _("bad interval - %s"), optarg);
1845 usage();
1846 }
1847 i_flag = 1;
1848 open_flag = EXT2_FLAG_RW;
1849 break;
1850 case 'j':
1851 if (!journal_size)
1852 journal_size = -1;
1853 open_flag = EXT2_FLAG_RW;
1854 break;
1855 case 'J':
1856 parse_journal_opts(optarg);
1857 open_flag = EXT2_FLAG_RW;
1858 break;
1859 case 'l':
1860 l_flag = 1;
1861 break;
1862 case 'L':
1863 new_label = optarg;
1864 L_flag = 1;
1865 open_flag |= EXT2_FLAG_RW |
1866 EXT2_FLAG_JOURNAL_DEV_OK;
1867 break;
1868 case 'm':
1869 reserved_ratio = strtod(optarg, &tmp);
1870 if (*tmp || reserved_ratio > 50 ||
1871 reserved_ratio < 0) {
1872 com_err(program_name, 0,
1873 _("bad reserved block ratio - %s"),
1874 optarg);
1875 usage();
1876 }
1877 m_flag = 1;
1878 open_flag = EXT2_FLAG_RW;
1879 break;
1880 case 'M':
1881 new_last_mounted = optarg;
1882 M_flag = 1;
1883 open_flag = EXT2_FLAG_RW;
1884 break;
1885 case 'o':
1886 if (mntopts_cmd) {
1887 com_err(program_name, 0, "%s",
1888 _("-o may only be specified once"));
1889 usage();
1890 }
1891 mntopts_cmd = optarg;
1892 open_flag = EXT2_FLAG_RW;
1893 break;
1894 case 'O':
1895 if (features_cmd) {
1896 com_err(program_name, 0, "%s",
1897 _("-O may only be specified once"));
1898 usage();
1899 }
1900 features_cmd = optarg;
1901 open_flag = EXT2_FLAG_RW;
1902 break;
1903 case 'Q':
1904 Q_flag = 1;
1905 ret = parse_quota_opts(optarg, option_handle_function);
1906 if (ret)
1907 exit(1);
1908 open_flag = EXT2_FLAG_RW;
1909 break;
1910 case 'r':
1911 reserved_blocks = strtoul(optarg, &tmp, 0);
1912 if (*tmp) {
1913 com_err(program_name, 0,
1914 _("bad reserved blocks count - %s"),
1915 optarg);
1916 usage();
1917 }
1918 r_flag = 1;
1919 open_flag = EXT2_FLAG_RW;
1920 break;
1921 case 's': /* Deprecated */
1922 s_flag = atoi(optarg);
1923 open_flag = EXT2_FLAG_RW;
1924 break;
1925 case 'T':
1926 T_flag = 1;
1927 last_check_time = parse_time(optarg);
1928 open_flag = EXT2_FLAG_RW;
1929 break;
1930 case 'u':
1931 resuid = strtoul(optarg, &tmp, 0);
1932 if (*tmp) {
1933 pw = getpwnam(optarg);
1934 if (pw == NULL)
1935 tmp = optarg;
1936 else {
1937 resuid = pw->pw_uid;
1938 *tmp = 0;
1939 }
1940 }
1941 if (*tmp) {
1942 com_err(program_name, 0,
1943 _("bad uid/user name - %s"),
1944 optarg);
1945 usage();
1946 }
1947 u_flag = 1;
1948 open_flag = EXT2_FLAG_RW;
1949 break;
1950 case 'U':
1951 new_UUID = optarg;
1952 U_flag = 1;
1953 open_flag = EXT2_FLAG_RW |
1954 EXT2_FLAG_JOURNAL_DEV_OK;
1955 break;
1956 case 'I':
1957 new_inode_size = strtoul(optarg, &tmp, 0);
1958 if (*tmp) {
1959 com_err(program_name, 0,
1960 _("bad inode size - %s"),
1961 optarg);
1962 usage();
1963 }
1964 if (!((new_inode_size &
1965 (new_inode_size - 1)) == 0)) {
1966 com_err(program_name, 0,
1967 _("Inode size must be a "
1968 "power of two- %s"),
1969 optarg);
1970 usage();
1971 }
1972 open_flag = EXT2_FLAG_RW;
1973 I_flag = 1;
1974 break;
1975 case 'z':
1976 undo_file = optarg;
1977 break;
1978 default:
1979 usage();
1980 }
1981 if (optind < argc - 1 || optind == argc)
1982 usage();
1983 if (!open_flag && !l_flag)
1984 usage();
1985 io_options = strchr(argv[optind], '?');
1986 if (io_options)
1987 *io_options++ = 0;
1988 device_name = blkid_get_devname(NULL, argv[optind], NULL);
1989 if (!device_name) {
1990 com_err(program_name, 0, _("Unable to resolve '%s'"),
1991 argv[optind]);
1992 exit(1);
1993 }
1994 }
1995
1996 #ifdef CONFIG_BUILD_FINDFS
1997 void do_findfs(int argc, char **argv)
1998 {
1999 char *dev;
2000
2001 if ((argc != 2) ||
2002 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
2003 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
2004 exit(2);
2005 }
2006 dev = blkid_get_devname(NULL, argv[1], NULL);
2007 if (!dev) {
2008 com_err("findfs", 0, _("Unable to resolve '%s'"),
2009 argv[1]);
2010 exit(1);
2011 }
2012 puts(dev);
2013 exit(0);
2014 }
2015 #endif
2016
2017 static int parse_extended_opts(ext2_filsys fs, const char *opts)
2018 {
2019 char *buf, *token, *next, *p, *arg;
2020 int len, hash_alg;
2021 int r_usage = 0;
2022
2023 len = strlen(opts);
2024 buf = malloc(len+1);
2025 if (!buf) {
2026 fprintf(stderr, "%s",
2027 _("Couldn't allocate memory to parse options!\n"));
2028 return 1;
2029 }
2030 strcpy(buf, opts);
2031 for (token = buf; token && *token; token = next) {
2032 p = strchr(token, ',');
2033 next = 0;
2034 if (p) {
2035 *p = 0;
2036 next = p+1;
2037 }
2038 arg = strchr(token, '=');
2039 if (arg) {
2040 *arg = 0;
2041 arg++;
2042 }
2043 if (strcmp(token, "clear-mmp") == 0 ||
2044 strcmp(token, "clear_mmp") == 0) {
2045 clear_mmp = 1;
2046 } else if (strcmp(token, "mmp_update_interval") == 0) {
2047 unsigned long intv;
2048 if (!arg) {
2049 r_usage++;
2050 continue;
2051 }
2052 intv = strtoul(arg, &p, 0);
2053 if (*p) {
2054 fprintf(stderr,
2055 _("Invalid mmp_update_interval: %s\n"),
2056 arg);
2057 r_usage++;
2058 continue;
2059 }
2060 if (intv == 0) {
2061 intv = EXT4_MMP_UPDATE_INTERVAL;
2062 } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
2063 fprintf(stderr,
2064 _("mmp_update_interval too big: %lu\n"),
2065 intv);
2066 r_usage++;
2067 continue;
2068 }
2069 printf(P_("Setting multiple mount protection update "
2070 "interval to %lu second\n",
2071 "Setting multiple mount protection update "
2072 "interval to %lu seconds\n", intv),
2073 intv);
2074 fs->super->s_mmp_update_interval = intv;
2075 ext2fs_mark_super_dirty(fs);
2076 } else if (!strcmp(token, "force_fsck")) {
2077 fs->super->s_state |= EXT2_ERROR_FS;
2078 printf(_("Setting filesystem error flag to force fsck.\n"));
2079 ext2fs_mark_super_dirty(fs);
2080 } else if (!strcmp(token, "test_fs")) {
2081 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
2082 printf("Setting test filesystem flag\n");
2083 ext2fs_mark_super_dirty(fs);
2084 } else if (!strcmp(token, "^test_fs")) {
2085 fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
2086 printf("Clearing test filesystem flag\n");
2087 ext2fs_mark_super_dirty(fs);
2088 } else if (strcmp(token, "stride") == 0) {
2089 if (!arg) {
2090 r_usage++;
2091 continue;
2092 }
2093 stride = strtoul(arg, &p, 0);
2094 if (*p) {
2095 fprintf(stderr,
2096 _("Invalid RAID stride: %s\n"),
2097 arg);
2098 r_usage++;
2099 continue;
2100 }
2101 stride_set = 1;
2102 } else if (strcmp(token, "stripe-width") == 0 ||
2103 strcmp(token, "stripe_width") == 0) {
2104 if (!arg) {
2105 r_usage++;
2106 continue;
2107 }
2108 stripe_width = strtoul(arg, &p, 0);
2109 if (*p) {
2110 fprintf(stderr,
2111 _("Invalid RAID stripe-width: %s\n"),
2112 arg);
2113 r_usage++;
2114 continue;
2115 }
2116 stripe_width_set = 1;
2117 } else if (strcmp(token, "hash_alg") == 0 ||
2118 strcmp(token, "hash-alg") == 0) {
2119 if (!arg) {
2120 r_usage++;
2121 continue;
2122 }
2123 hash_alg = e2p_string2hash(arg);
2124 if (hash_alg < 0) {
2125 fprintf(stderr,
2126 _("Invalid hash algorithm: %s\n"),
2127 arg);
2128 r_usage++;
2129 continue;
2130 }
2131 fs->super->s_def_hash_version = hash_alg;
2132 printf(_("Setting default hash algorithm "
2133 "to %s (%d)\n"),
2134 arg, hash_alg);
2135 ext2fs_mark_super_dirty(fs);
2136 } else if (!strcmp(token, "mount_opts")) {
2137 if (!arg) {
2138 r_usage++;
2139 continue;
2140 }
2141 if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
2142 fprintf(stderr,
2143 "Extended mount options too long\n");
2144 continue;
2145 }
2146 ext_mount_opts = strdup(arg);
2147 } else
2148 r_usage++;
2149 }
2150 if (r_usage) {
2151 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
2152 "Extended options are separated by commas, "
2153 "and may take an argument which\n"
2154 "\tis set off by an equals ('=') sign.\n\n"
2155 "Valid extended options are:\n"
2156 "\tclear_mmp\n"
2157 "\thash_alg=<hash algorithm>\n"
2158 "\tmount_opts=<extended default mount options>\n"
2159 "\tmmp_update_interval=<mmp update interval in seconds>\n"
2160 "\tstride=<RAID per-disk chunk size in blocks>\n"
2161 "\tstripe_width=<RAID stride*data disks in blocks>\n"
2162 "\tforce_fsck\n"
2163 "\ttest_fs\n"
2164 "\t^test_fs\n"));
2165 free(buf);
2166 return 1;
2167 }
2168 free(buf);
2169
2170 return 0;
2171 }
2172
2173 /*
2174 * Fill in the block bitmap bmap with the information regarding the
2175 * blocks to be moved
2176 */
2177 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2178 ext2fs_block_bitmap bmap)
2179 {
2180 dgrp_t i;
2181 int retval;
2182 ext2_badblocks_list bb_list = 0;
2183 blk64_t j, needed_blocks = 0;
2184 blk64_t start_blk, end_blk;
2185
2186 retval = ext2fs_read_bb_inode(fs, &bb_list);
2187 if (retval)
2188 return retval;
2189
2190 for (i = 0; i < fs->group_desc_count; i++) {
2191 start_blk = ext2fs_inode_table_loc(fs, i) +
2192 fs->inode_blocks_per_group;
2193
2194 end_blk = ext2fs_inode_table_loc(fs, i) +
2195 new_ino_blks_per_grp;
2196
2197 for (j = start_blk; j < end_blk; j++) {
2198 if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2199 /*
2200 * IF the block is a bad block we fail
2201 */
2202 if (ext2fs_badblocks_list_test(bb_list, j)) {
2203 ext2fs_badblocks_list_free(bb_list);
2204 return ENOSPC;
2205 }
2206
2207 ext2fs_mark_block_bitmap2(bmap, j);
2208 } else {
2209 /*
2210 * We are going to use this block for
2211 * inode table. So mark them used.
2212 */
2213 ext2fs_mark_block_bitmap2(fs->block_map, j);
2214 }
2215 }
2216 needed_blocks += end_blk - start_blk;
2217 }
2218
2219 ext2fs_badblocks_list_free(bb_list);
2220 if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2221 return ENOSPC;
2222
2223 return 0;
2224 }
2225
2226 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2227 {
2228 dgrp_t group;
2229 group = ext2fs_group_of_blk2(fs, blk);
2230 if (ext2fs_block_bitmap_loc(fs, group) == blk)
2231 return 1;
2232 if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2233 return 1;
2234 return 0;
2235 }
2236
2237 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2238 {
2239 blk64_t start_blk, end_blk;
2240 start_blk = fs->super->s_first_data_block +
2241 EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2242 /*
2243 * We cannot get new block beyond end_blk for for the last block group
2244 * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2245 */
2246 end_blk = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2247 if (blk >= start_blk && blk <= end_blk)
2248 return 1;
2249 return 0;
2250 }
2251
2252 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2253 {
2254
2255 char *buf;
2256 dgrp_t group = 0;
2257 errcode_t retval;
2258 int meta_data = 0;
2259 blk64_t blk, new_blk, goal;
2260 struct blk_move *bmv;
2261
2262 retval = ext2fs_get_mem(fs->blocksize, &buf);
2263 if (retval)
2264 return retval;
2265
2266 for (new_blk = blk = fs->super->s_first_data_block;
2267 blk < ext2fs_blocks_count(fs->super); blk++) {
2268 if (!ext2fs_test_block_bitmap2(bmap, blk))
2269 continue;
2270
2271 if (ext2fs_is_meta_block(fs, blk)) {
2272 /*
2273 * If the block is mapping a fs meta data block
2274 * like group desc/block bitmap/inode bitmap. We
2275 * should find a block in the same group and fix
2276 * the respective fs metadata pointers. Otherwise
2277 * fail
2278 */
2279 group = ext2fs_group_of_blk2(fs, blk);
2280 goal = ext2fs_group_first_block2(fs, group);
2281 meta_data = 1;
2282
2283 } else {
2284 goal = new_blk;
2285 }
2286 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2287 if (retval)
2288 goto err_out;
2289
2290 /* new fs meta data block should be in the same group */
2291 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2292 retval = ENOSPC;
2293 goto err_out;
2294 }
2295
2296 /* Mark this block as allocated */
2297 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2298
2299 /* Add it to block move list */
2300 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2301 if (retval)
2302 goto err_out;
2303
2304 bmv->old_loc = blk;
2305 bmv->new_loc = new_blk;
2306
2307 list_add(&(bmv->list), &blk_move_list);
2308
2309 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2310 if (retval)
2311 goto err_out;
2312
2313 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2314 if (retval)
2315 goto err_out;
2316 }
2317
2318 err_out:
2319 ext2fs_free_mem(&buf);
2320 return retval;
2321 }
2322
2323 static blk64_t translate_block(blk64_t blk)
2324 {
2325 struct list_head *entry;
2326 struct blk_move *bmv;
2327
2328 list_for_each(entry, &blk_move_list) {
2329 bmv = list_entry(entry, struct blk_move, list);
2330 if (bmv->old_loc == blk)
2331 return bmv->new_loc;
2332 }
2333
2334 return 0;
2335 }
2336
2337 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2338 blk64_t *block_nr,
2339 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2340 blk64_t ref_block EXT2FS_ATTR((unused)),
2341 int ref_offset EXT2FS_ATTR((unused)),
2342 void *priv_data)
2343 {
2344 int ret = 0;
2345 blk64_t new_blk;
2346 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2347
2348 if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2349 return 0;
2350 new_blk = translate_block(*block_nr);
2351 if (new_blk) {
2352 *block_nr = new_blk;
2353 /*
2354 * This will force the ext2fs_write_inode in the iterator
2355 */
2356 ret |= BLOCK_CHANGED;
2357 }
2358
2359 return ret;
2360 }
2361
2362 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2363 {
2364 errcode_t retval = 0;
2365 ext2_ino_t ino;
2366 blk64_t blk;
2367 char *block_buf = 0;
2368 struct ext2_inode inode;
2369 ext2_inode_scan scan = NULL;
2370
2371 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2372 if (retval)
2373 return retval;
2374
2375 retval = ext2fs_open_inode_scan(fs, 0, &scan);
2376 if (retval)
2377 goto err_out;
2378
2379 while (1) {
2380 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2381 if (retval)
2382 goto err_out;
2383
2384 if (!ino)
2385 break;
2386
2387 if (inode.i_links_count == 0)
2388 continue; /* inode not in use */
2389
2390 /* FIXME!!
2391 * If we end up modifying the journal inode
2392 * the sb->s_jnl_blocks will differ. But a
2393 * subsequent e2fsck fixes that.
2394 * Do we need to fix this ??
2395 */
2396
2397 if (ext2fs_file_acl_block(fs, &inode) &&
2398 ext2fs_test_block_bitmap2(bmap,
2399 ext2fs_file_acl_block(fs, &inode))) {
2400 blk = translate_block(ext2fs_file_acl_block(fs,
2401 &inode));
2402 if (!blk)
2403 continue;
2404
2405 ext2fs_file_acl_block_set(fs, &inode, blk);
2406
2407 /*
2408 * Write the inode to disk so that inode table
2409 * resizing can work
2410 */
2411 retval = ext2fs_write_inode(fs, ino, &inode);
2412 if (retval)
2413 goto err_out;
2414 }
2415
2416 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2417 continue;
2418
2419 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2420 process_block, bmap);
2421 if (retval)
2422 goto err_out;
2423
2424 }
2425
2426 err_out:
2427 ext2fs_free_mem(&block_buf);
2428 ext2fs_close_inode_scan(scan);
2429
2430 return retval;
2431 }
2432
2433 /*
2434 * We need to scan for inode and block bitmaps that may need to be
2435 * moved. This can take place if the filesystem was formatted for
2436 * RAID arrays using the mke2fs's extended option "stride".
2437 */
2438 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2439 {
2440 dgrp_t i;
2441 blk64_t blk, new_blk;
2442
2443 for (i = 0; i < fs->group_desc_count; i++) {
2444 blk = ext2fs_block_bitmap_loc(fs, i);
2445 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2446 new_blk = translate_block(blk);
2447 if (!new_blk)
2448 continue;
2449 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2450 }
2451
2452 blk = ext2fs_inode_bitmap_loc(fs, i);
2453 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2454 new_blk = translate_block(blk);
2455 if (!new_blk)
2456 continue;
2457 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2458 }
2459 }
2460 return 0;
2461 }
2462
2463 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2464 {
2465 dgrp_t i;
2466 blk64_t blk;
2467 errcode_t retval;
2468 int new_ino_blks_per_grp;
2469 unsigned int j;
2470 char *old_itable = NULL, *new_itable = NULL;
2471 char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2472 unsigned long old_ino_size;
2473 int old_itable_size, new_itable_size;
2474
2475 old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2476 old_ino_size = EXT2_INODE_SIZE(fs->super);
2477
2478 new_ino_blks_per_grp = ext2fs_div_ceil(
2479 EXT2_INODES_PER_GROUP(fs->super) *
2480 new_ino_size,
2481 fs->blocksize);
2482
2483 new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2484
2485 retval = ext2fs_get_mem(old_itable_size, &old_itable);
2486 if (retval)
2487 return retval;
2488
2489 retval = ext2fs_get_mem(new_itable_size, &new_itable);
2490 if (retval)
2491 goto err_out;
2492
2493 tmp_old_itable = old_itable;
2494 tmp_new_itable = new_itable;
2495
2496 for (i = 0; i < fs->group_desc_count; i++) {
2497 blk = ext2fs_inode_table_loc(fs, i);
2498 retval = io_channel_read_blk64(fs->io, blk,
2499 fs->inode_blocks_per_group, old_itable);
2500 if (retval)
2501 goto err_out;
2502
2503 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2504 memcpy(new_itable, old_itable, old_ino_size);
2505
2506 memset(new_itable+old_ino_size, 0,
2507 new_ino_size - old_ino_size);
2508
2509 new_itable += new_ino_size;
2510 old_itable += old_ino_size;
2511 }
2512
2513 /* reset the pointer */
2514 old_itable = tmp_old_itable;
2515 new_itable = tmp_new_itable;
2516
2517 retval = io_channel_write_blk64(fs->io, blk,
2518 new_ino_blks_per_grp, new_itable);
2519 if (retval)
2520 goto err_out;
2521 }
2522
2523 /* Update the meta data */
2524 fs->inode_blocks_per_group = new_ino_blks_per_grp;
2525 ext2fs_free_inode_cache(fs->icache);
2526 fs->icache = 0;
2527 fs->super->s_inode_size = new_ino_size;
2528
2529 err_out:
2530 if (old_itable)
2531 ext2fs_free_mem(&old_itable);
2532
2533 if (new_itable)
2534 ext2fs_free_mem(&new_itable);
2535
2536 return retval;
2537 }
2538
2539 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
2540 {
2541 blk64_t blk;
2542 ext2_ino_t ino;
2543 unsigned int group = 0;
2544 unsigned int count = 0;
2545 int total_free = 0;
2546 int group_free = 0;
2547
2548 /*
2549 * First calculate the block statistics
2550 */
2551 for (blk = fs->super->s_first_data_block;
2552 blk < ext2fs_blocks_count(fs->super); blk++) {
2553 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
2554 group_free++;
2555 total_free++;
2556 }
2557 count++;
2558 if ((count == fs->super->s_blocks_per_group) ||
2559 (blk == ext2fs_blocks_count(fs->super)-1)) {
2560 ext2fs_bg_free_blocks_count_set(fs, group++,
2561 group_free);
2562 count = 0;
2563 group_free = 0;
2564 }
2565 }
2566 total_free = EXT2FS_C2B(fs, total_free);
2567 ext2fs_free_blocks_count_set(fs->super, total_free);
2568
2569 /*
2570 * Next, calculate the inode statistics
2571 */
2572 group_free = 0;
2573 total_free = 0;
2574 count = 0;
2575 group = 0;
2576
2577 /* Protect loop from wrap-around if s_inodes_count maxed */
2578 for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
2579 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
2580 group_free++;
2581 total_free++;
2582 }
2583 count++;
2584 if ((count == fs->super->s_inodes_per_group) ||
2585 (ino == fs->super->s_inodes_count)) {
2586 ext2fs_bg_free_inodes_count_set(fs, group++,
2587 group_free);
2588 count = 0;
2589 group_free = 0;
2590 }
2591 }
2592 fs->super->s_free_inodes_count = total_free;
2593 ext2fs_mark_super_dirty(fs);
2594 return 0;
2595 }
2596
2597 #define list_for_each_safe(pos, pnext, head) \
2598 for (pos = (head)->next, pnext = pos->next; pos != (head); \
2599 pos = pnext, pnext = pos->next)
2600
2601 static void free_blk_move_list(void)
2602 {
2603 struct list_head *entry, *tmp;
2604 struct blk_move *bmv;
2605
2606 list_for_each_safe(entry, tmp, &blk_move_list) {
2607 bmv = list_entry(entry, struct blk_move, list);
2608 list_del(entry);
2609 ext2fs_free_mem(&bmv);
2610 }
2611 return;
2612 }
2613
2614 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2615 {
2616 errcode_t retval;
2617 int new_ino_blks_per_grp;
2618 ext2fs_block_bitmap bmap;
2619
2620 retval = ext2fs_read_inode_bitmap(fs);
2621 if (retval) {
2622 fputs(_("Failed to read inode bitmap\n"), stderr);
2623 return retval;
2624 }
2625 retval = ext2fs_read_block_bitmap(fs);
2626 if (retval) {
2627 fputs(_("Failed to read block bitmap\n"), stderr);
2628 return retval;
2629 }
2630 INIT_LIST_HEAD(&blk_move_list);
2631
2632
2633 new_ino_blks_per_grp = ext2fs_div_ceil(
2634 EXT2_INODES_PER_GROUP(fs->super)*
2635 new_size,
2636 fs->blocksize);
2637
2638 /* We may change the file system.
2639 * Mark the file system as invalid so that
2640 * the user is prompted to run fsck.
2641 */
2642 fs->super->s_state &= ~EXT2_VALID_FS;
2643
2644 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2645 &bmap);
2646 if (retval) {
2647 fputs(_("Failed to allocate block bitmap when "
2648 "increasing inode size\n"), stderr);
2649 return retval;
2650 }
2651 retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2652 if (retval) {
2653 fputs(_("Not enough space to increase inode size \n"), stderr);
2654 goto err_out;
2655 }
2656 retval = move_block(fs, bmap);
2657 if (retval) {
2658 fputs(_("Failed to relocate blocks during inode resize \n"),
2659 stderr);
2660 goto err_out;
2661 }
2662 retval = inode_scan_and_fix(fs, bmap);
2663 if (retval)
2664 goto err_out_undo;
2665
2666 retval = group_desc_scan_and_fix(fs, bmap);
2667 if (retval)
2668 goto err_out_undo;
2669
2670 retval = expand_inode_table(fs, new_size);
2671 if (retval)
2672 goto err_out_undo;
2673
2674 ext2fs_calculate_summary_stats(fs);
2675
2676 fs->super->s_state |= EXT2_VALID_FS;
2677 /* mark super block and block bitmap as dirty */
2678 ext2fs_mark_super_dirty(fs);
2679 ext2fs_mark_bb_dirty(fs);
2680
2681 err_out:
2682 free_blk_move_list();
2683 ext2fs_free_block_bitmap(bmap);
2684
2685 return retval;
2686
2687 err_out_undo:
2688 free_blk_move_list();
2689 ext2fs_free_block_bitmap(bmap);
2690 fputs(_("Error in resizing the inode size.\n"
2691 "Run e2undo to undo the "
2692 "file system changes. \n"), stderr);
2693
2694 return retval;
2695 }
2696
2697 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2698 {
2699 errcode_t retval = 0;
2700 const char *tdb_dir;
2701 char *tdb_file = NULL;
2702 char *dev_name, *tmp_name;
2703
2704 /* (re)open a specific undo file */
2705 if (undo_file && undo_file[0] != 0) {
2706 retval = set_undo_io_backing_manager(*io_ptr);
2707 if (retval)
2708 goto err;
2709 *io_ptr = undo_io_manager;
2710 retval = set_undo_io_backup_file(undo_file);
2711 if (retval)
2712 goto err;
2713 printf(_("Overwriting existing filesystem; this can be undone "
2714 "using the command:\n"
2715 " e2undo %s %s\n\n"),
2716 undo_file, name);
2717 return retval;
2718 }
2719
2720 /*
2721 * Configuration via a conf file would be
2722 * nice
2723 */
2724 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2725 if (!tdb_dir)
2726 tdb_dir = "/var/lib/e2fsprogs";
2727
2728 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2729 access(tdb_dir, W_OK))
2730 return 0;
2731
2732 tmp_name = strdup(name);
2733 if (!tmp_name)
2734 goto errout;
2735 dev_name = basename(tmp_name);
2736 tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2737 if (!tdb_file) {
2738 free(tmp_name);
2739 goto errout;
2740 }
2741 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2742 free(tmp_name);
2743
2744 if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2745 retval = errno;
2746 com_err(program_name, retval,
2747 _("while trying to delete %s"), tdb_file);
2748 goto errout;
2749 }
2750
2751 retval = set_undo_io_backing_manager(*io_ptr);
2752 if (retval)
2753 goto errout;
2754 *io_ptr = undo_io_manager;
2755 retval = set_undo_io_backup_file(tdb_file);
2756 if (retval)
2757 goto errout;
2758 printf(_("Overwriting existing filesystem; this can be undone "
2759 "using the command:\n"
2760 " e2undo %s %s\n\n"),
2761 tdb_file, name);
2762
2763 free(tdb_file);
2764 return 0;
2765 errout:
2766 free(tdb_file);
2767 err:
2768 com_err("tune2fs", retval, "while trying to setup undo file\n");
2769 return retval;
2770 }
2771
2772 static int
2773 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2774 {
2775 int retval, nr_users, start;
2776 journal_superblock_t *jsb;
2777 ext2_filsys jfs;
2778 __u8 *j_uuid;
2779 char *journal_path;
2780 char uuid[UUID_STR_SIZE];
2781 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2782
2783 if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
2784 return 0;
2785
2786 uuid_unparse(sb->s_journal_uuid, uuid);
2787 journal_path = blkid_get_devname(NULL, "UUID", uuid);
2788 if (!journal_path)
2789 return 0;
2790
2791 retval = ext2fs_open2(journal_path, io_options,
2792 EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2793 0, 0, unix_io_manager, &jfs);
2794 if (retval) {
2795 com_err(program_name, retval,
2796 _("while trying to open %s"),
2797 journal_path);
2798 return retval;
2799 }
2800
2801 retval = get_journal_sb(jfs, buf);
2802 if (retval != 0) {
2803 if (retval == EXT2_ET_UNSUPP_FEATURE)
2804 fprintf(stderr, _("%s is not a journal device.\n"),
2805 journal_path);
2806 return retval;
2807 }
2808
2809 jsb = (journal_superblock_t *) buf;
2810 /* Find the filesystem UUID */
2811 nr_users = ntohl(jsb->s_nr_users);
2812 if (nr_users > JFS_USERS_MAX) {
2813 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
2814 "is too high (%d).\n"), nr_users);
2815 return EXT2_ET_CORRUPT_JOURNAL_SB;
2816 }
2817
2818 j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2819 if (j_uuid == NULL) {
2820 fputs(_("Filesystem's UUID not found on journal device.\n"),
2821 stderr);
2822 return EXT2_ET_LOAD_EXT_JOURNAL;
2823 }
2824
2825 memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2826
2827 start = ext2fs_journal_sb_start(jfs->blocksize);
2828 /* Write back the journal superblock */
2829 retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2830 if (retval != 0) {
2831 com_err(program_name, retval,
2832 "while writing journal superblock.");
2833 return retval;
2834 }
2835
2836 ext2fs_close(jfs);
2837
2838 return 0;
2839 }
2840
2841 #ifndef BUILD_AS_LIB
2842 int main(int argc, char **argv)
2843 #else
2844 int tune2fs_main(int argc, char **argv)
2845 #endif /* BUILD_AS_LIB */
2846 {
2847 errcode_t retval;
2848 ext2_filsys fs;
2849 struct ext2_super_block *sb;
2850 io_manager io_ptr, io_ptr_orig = NULL;
2851 int rc = 0;
2852 char default_undo_file[1] = { 0 };
2853
2854 #ifdef ENABLE_NLS
2855 setlocale(LC_MESSAGES, "");
2856 setlocale(LC_CTYPE, "");
2857 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2858 textdomain(NLS_CAT_NAME);
2859 set_com_err_gettext(gettext);
2860 #endif
2861 if (argc && *argv)
2862 program_name = *argv;
2863 add_error_table(&et_ext2_error_table);
2864
2865 #ifdef CONFIG_BUILD_FINDFS
2866 if (strcmp(get_progname(argv[0]), "findfs") == 0)
2867 do_findfs(argc, argv);
2868 #endif
2869 if (strcmp(get_progname(argv[0]), "e2label") == 0)
2870 parse_e2label_options(argc, argv);
2871 else
2872 parse_tune2fs_options(argc, argv);
2873
2874 #ifdef CONFIG_TESTIO_DEBUG
2875 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2876 io_ptr = test_io_manager;
2877 test_io_backing_manager = unix_io_manager;
2878 } else
2879 #endif
2880 io_ptr = unix_io_manager;
2881
2882 retry_open:
2883 if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2884 open_flag |= EXT2_FLAG_SKIP_MMP;
2885
2886 open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_JOURNAL_DEV_OK;
2887
2888 /* keep the filesystem struct around to dump MMP data */
2889 open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2890
2891 retval = ext2fs_open2(device_name, io_options, open_flag,
2892 0, 0, io_ptr, &fs);
2893 if (retval) {
2894 com_err(program_name, retval,
2895 _("while trying to open %s"),
2896 device_name);
2897 if (retval == EXT2_ET_MMP_FSCK_ON ||
2898 retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2899 dump_mmp_msg(fs->mmp_buf,
2900 _("If you are sure the filesystem "
2901 "is not in use on any node, run:\n"
2902 "'tune2fs -f -E clear_mmp {device}'\n"));
2903 else if (retval == EXT2_ET_MMP_FAILED)
2904 dump_mmp_msg(fs->mmp_buf, NULL);
2905 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2906 fprintf(stderr,
2907 _("MMP block magic is bad. Try to fix it by "
2908 "running:\n'e2fsck -f %s'\n"), device_name);
2909 else if (retval == EXT2_ET_BAD_MAGIC)
2910 check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2911 else if (retval != EXT2_ET_MMP_FAILED)
2912 fprintf(stderr, "%s",
2913 _("Couldn't find valid filesystem superblock.\n"));
2914
2915 ext2fs_free(fs);
2916 exit(1);
2917 }
2918 if (ext2fs_has_feature_journal_dev(fs->super)) {
2919 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
2920 ext2fs_free(fs);
2921 exit(1);
2922 }
2923 fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
2924
2925 if (I_flag) {
2926 /*
2927 * Check the inode size is right so we can issue an
2928 * error message and bail before setting up the tdb
2929 * file.
2930 */
2931 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
2932 fprintf(stderr, _("The inode size is already %lu\n"),
2933 new_inode_size);
2934 rc = 1;
2935 goto closefs;
2936 }
2937 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
2938 fprintf(stderr, "%s",
2939 _("Shrinking inode size is not supported\n"));
2940 rc = 1;
2941 goto closefs;
2942 }
2943 if (new_inode_size > fs->blocksize) {
2944 fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
2945 new_inode_size, fs->blocksize);
2946 rc = 1;
2947 goto closefs;
2948 }
2949 check_fsck_needed(fs,
2950 _("Resizing inodes could take some time."));
2951 /*
2952 * If inode resize is requested use the
2953 * Undo I/O manager
2954 */
2955 undo_file = default_undo_file;
2956 }
2957
2958 /* Set up an undo file */
2959 if (undo_file && io_ptr_orig == NULL) {
2960 io_ptr_orig = io_ptr;
2961 retval = tune2fs_setup_tdb(device_name, &io_ptr);
2962 if (retval) {
2963 rc = 1;
2964 goto closefs;
2965 }
2966 if (io_ptr != io_ptr_orig) {
2967 ext2fs_close_free(&fs);
2968 goto retry_open;
2969 }
2970 }
2971
2972 sb = fs->super;
2973 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2974
2975 if (print_label) {
2976 /* For e2label emulation */
2977 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
2978 sb->s_volume_name);
2979 remove_error_table(&et_ext2_error_table);
2980 goto closefs;
2981 }
2982
2983 retval = ext2fs_check_if_mounted(device_name, &mount_flags);
2984 if (retval) {
2985 com_err("ext2fs_check_if_mount", retval,
2986 _("while determining whether %s is mounted."),
2987 device_name);
2988 rc = 1;
2989 goto closefs;
2990 }
2991
2992 #ifdef NO_RECOVERY
2993 /* Warn if file system needs recovery and it is opened for writing. */
2994 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
2995 (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
2996 (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
2997 fprintf(stderr,
2998 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
2999 "\te2fsck -E journal_only %s\n\n"
3000 "then rerun this command. Otherwise, any changes made may be overwritten\n"
3001 "by journal recovery.\n"), device_name);
3002 }
3003 #else
3004 /* Recover the journal if possible. */
3005 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & (EXT2_MF_BUSY | EXT2_MF_MOUNTED)) &&
3006 ext2fs_has_feature_journal_needs_recovery(fs->super)) {
3007 errcode_t err;
3008
3009 printf(_("Recovering journal.\n"));
3010 err = ext2fs_run_ext3_journal(&fs);
3011 if (err) {
3012 com_err("tune2fs", err, "while recovering journal.\n");
3013 printf(_("Please run e2fsck -fy %s.\n"), argv[1]);
3014 if (fs)
3015 ext2fs_close_free(&fs);
3016 exit(1);
3017 }
3018 sb = fs->super;
3019 }
3020 #endif
3021
3022 /* Normally we only need to write out the superblock */
3023 fs->flags |= EXT2_FLAG_SUPER_ONLY;
3024
3025 if (c_flag) {
3026 sb->s_max_mnt_count = max_mount_count;
3027 ext2fs_mark_super_dirty(fs);
3028 printf(_("Setting maximal mount count to %d\n"),
3029 max_mount_count);
3030 }
3031 if (C_flag) {
3032 sb->s_mnt_count = mount_count;
3033 ext2fs_mark_super_dirty(fs);
3034 printf(_("Setting current mount count to %d\n"), mount_count);
3035 }
3036 if (e_flag) {
3037 sb->s_errors = errors;
3038 ext2fs_mark_super_dirty(fs);
3039 printf(_("Setting error behavior to %d\n"), errors);
3040 }
3041 if (g_flag) {
3042 sb->s_def_resgid = resgid;
3043 ext2fs_mark_super_dirty(fs);
3044 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
3045 }
3046 if (i_flag) {
3047 if ((unsigned long long)interval >= (1ULL << 32)) {
3048 com_err(program_name, 0,
3049 _("interval between checks is too big (%lu)"),
3050 interval);
3051 rc = 1;
3052 goto closefs;
3053 }
3054 sb->s_checkinterval = interval;
3055 ext2fs_mark_super_dirty(fs);
3056 printf(_("Setting interval between checks to %lu seconds\n"),
3057 interval);
3058 }
3059 if (m_flag) {
3060 ext2fs_r_blocks_count_set(sb, reserved_ratio *
3061 ext2fs_blocks_count(sb) / 100.0);
3062 ext2fs_mark_super_dirty(fs);
3063 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
3064 reserved_ratio, ext2fs_r_blocks_count(sb));
3065 }
3066 if (r_flag) {
3067 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
3068 com_err(program_name, 0,
3069 _("reserved blocks count is too big (%llu)"),
3070 reserved_blocks);
3071 rc = 1;
3072 goto closefs;
3073 }
3074 ext2fs_r_blocks_count_set(sb, reserved_blocks);
3075 ext2fs_mark_super_dirty(fs);
3076 printf(_("Setting reserved blocks count to %llu\n"),
3077 reserved_blocks);
3078 }
3079 if (s_flag == 1) {
3080 if (ext2fs_has_feature_sparse_super(sb)) {
3081 fputs(_("\nThe filesystem already has sparse "
3082 "superblocks.\n"), stderr);
3083 } else if (ext2fs_has_feature_meta_bg(sb)) {
3084 fputs(_("\nSetting the sparse superblock flag not "
3085 "supported\nfor filesystems with "
3086 "the meta_bg feature enabled.\n"),
3087 stderr);
3088 rc = 1;
3089 goto closefs;
3090 } else {
3091 ext2fs_set_feature_sparse_super(sb);
3092 sb->s_state &= ~EXT2_VALID_FS;
3093 ext2fs_mark_super_dirty(fs);
3094 printf(_("\nSparse superblock flag set. %s"),
3095 _(please_fsck));
3096 }
3097 }
3098 if (s_flag == 0) {
3099 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
3100 stderr);
3101 rc = 1;
3102 goto closefs;
3103 }
3104 if (T_flag) {
3105 sb->s_lastcheck = last_check_time;
3106 ext2fs_mark_super_dirty(fs);
3107 printf(_("Setting time filesystem last checked to %s\n"),
3108 ctime(&last_check_time));
3109 }
3110 if (u_flag) {
3111 sb->s_def_resuid = resuid;
3112 ext2fs_mark_super_dirty(fs);
3113 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
3114 }
3115 if (L_flag) {
3116 if (strlen(new_label) > sizeof(sb->s_volume_name))
3117 fputs(_("Warning: label too long, truncating.\n"),
3118 stderr);
3119 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
3120 strncpy(sb->s_volume_name, new_label,
3121 sizeof(sb->s_volume_name));
3122 ext2fs_mark_super_dirty(fs);
3123 }
3124 if (M_flag) {
3125 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
3126 strncpy(sb->s_last_mounted, new_last_mounted,
3127 sizeof(sb->s_last_mounted));
3128 ext2fs_mark_super_dirty(fs);
3129 }
3130 if (mntopts_cmd) {
3131 rc = update_mntopts(fs, mntopts_cmd);
3132 if (rc)
3133 goto closefs;
3134 }
3135 if (features_cmd) {
3136 rc = update_feature_set(fs, features_cmd);
3137 if (rc)
3138 goto closefs;
3139 }
3140 if (extended_cmd) {
3141 rc = parse_extended_opts(fs, extended_cmd);
3142 if (rc)
3143 goto closefs;
3144 if (clear_mmp && !f_flag) {
3145 fputs(_("Error in using clear_mmp. "
3146 "It must be used with -f\n"),
3147 stderr);
3148 goto closefs;
3149 }
3150 }
3151 if (clear_mmp) {
3152 rc = ext2fs_mmp_clear(fs);
3153 goto closefs;
3154 }
3155 if (journal_size || journal_device) {
3156 rc = add_journal(fs);
3157 if (rc)
3158 goto closefs;
3159 }
3160
3161 if (Q_flag) {
3162 if (mount_flags & EXT2_MF_MOUNTED) {
3163 fputs(_("The quota feature may only be changed when "
3164 "the filesystem is unmounted.\n"), stderr);
3165 rc = 1;
3166 goto closefs;
3167 }
3168 handle_quota_options(fs);
3169 }
3170
3171 if (U_flag) {
3172 int set_csum = 0;
3173 dgrp_t i;
3174 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3175 __u8 old_uuid[UUID_SIZE];
3176
3177 if (!ext2fs_has_feature_csum_seed(fs->super) &&
3178 (ext2fs_has_feature_metadata_csum(fs->super) ||
3179 ext2fs_has_feature_ea_inode(fs->super))) {
3180 check_fsck_needed(fs,
3181 _("Setting the UUID on this "
3182 "filesystem could take some time."));
3183 rewrite_checksums = 1;
3184 }
3185
3186 if (ext2fs_has_group_desc_csum(fs)) {
3187 /*
3188 * Changing the UUID on a metadata_csum FS requires
3189 * rewriting all metadata, which can race with a
3190 * mounted fs. Don't allow that unless we're saving
3191 * the checksum seed.
3192 */
3193 if ((mount_flags & EXT2_MF_MOUNTED) &&
3194 !ext2fs_has_feature_csum_seed(fs->super) &&
3195 ext2fs_has_feature_metadata_csum(fs->super)) {
3196 fputs(_("The UUID may only be "
3197 "changed when the filesystem is "
3198 "unmounted.\n"), stderr);
3199 fputs(_("If you only use kernels newer than "
3200 "v4.4, run 'tune2fs -O "
3201 "metadata_csum_seed' and re-run this "
3202 "command.\n"), stderr);
3203 try_confirm_csum_seed_support();
3204 exit(1);
3205 }
3206
3207 /*
3208 * Determine if the block group checksums are
3209 * correct so we know whether or not to set
3210 * them later on.
3211 */
3212 for (i = 0; i < fs->group_desc_count; i++)
3213 if (!ext2fs_group_desc_csum_verify(fs, i))
3214 break;
3215 if (i >= fs->group_desc_count)
3216 set_csum = 1;
3217 }
3218
3219 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
3220 if ((strcasecmp(new_UUID, "null") == 0) ||
3221 (strcasecmp(new_UUID, "clear") == 0)) {
3222 uuid_clear(sb->s_uuid);
3223 } else if (strcasecmp(new_UUID, "time") == 0) {
3224 uuid_generate_time(sb->s_uuid);
3225 } else if (strcasecmp(new_UUID, "random") == 0) {
3226 uuid_generate(sb->s_uuid);
3227 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
3228 com_err(program_name, 0, "%s",
3229 _("Invalid UUID format\n"));
3230 rc = 1;
3231 goto closefs;
3232 }
3233 ext2fs_init_csum_seed(fs);
3234 if (set_csum) {
3235 for (i = 0; i < fs->group_desc_count; i++)
3236 ext2fs_group_desc_csum_set(fs, i);
3237 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3238 }
3239
3240 /* If this is a journal dev, we need to copy UUID into jsb */
3241 if (!(rc = get_journal_sb(fs, buf))) {
3242 journal_superblock_t *jsb;
3243
3244 jsb = (journal_superblock_t *) buf;
3245 fputs(_("Need to update journal superblock.\n"), stdout);
3246 memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3247
3248 /* Writeback the journal superblock */
3249 if ((rc = io_channel_write_blk64(fs->io,
3250 ext2fs_journal_sb_start(fs->blocksize),
3251 -SUPERBLOCK_SIZE, buf)))
3252 goto closefs;
3253 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3254 goto closefs;
3255 else {
3256 rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3257
3258 if ((rc = fs_update_journal_user(sb, old_uuid)))
3259 goto closefs;
3260 }
3261
3262 ext2fs_mark_super_dirty(fs);
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 free(device_name);
3328 remove_error_table(&et_ext2_error_table);
3329
3330 closefs:
3331 if (rc) {
3332 ext2fs_mmp_stop(fs);
3333 #ifndef BUILD_AS_LIB
3334 exit(1);
3335 #endif
3336 }
3337
3338 if (feature_64bit)
3339 convert_64bit(fs, feature_64bit);
3340 return (ext2fs_close_free(&fs) ? 1 : 0);
3341 }
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