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[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 ext2_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 int 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 return 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 0;
442
443 puts(prompt);
444 proceed_question(5);
445
446 return 0;
447 }
448
449 static void request_dir_fsck_afterwards(ext2_filsys fs)
450 {
451 static int requested;
452
453 if (requested++)
454 return;
455 fsck_requested++;
456 fs->super->s_state &= ~EXT2_VALID_FS;
457 puts(_(fsck_explain));
458 puts(_(please_dir_fsck));
459 if (mount_flags & EXT2_MF_READONLY)
460 printf("%s", _("(and reboot afterwards!)\n"));
461 }
462
463 static void request_fsck_afterwards(ext2_filsys fs)
464 {
465 static int requested = 0;
466
467 if (requested++)
468 return;
469 fsck_requested++;
470 fs->super->s_state &= ~EXT2_VALID_FS;
471 printf("\n%s\n", _(please_fsck));
472 if (mount_flags & EXT2_MF_READONLY)
473 printf("%s", _("(and reboot afterwards!)\n"));
474 }
475
476 static void convert_64bit(ext2_filsys fs, int direction)
477 {
478 /*
479 * Is resize2fs going to demand a fsck run? Might as well tell the
480 * user now.
481 */
482 if (!fsck_requested &&
483 ((fs->super->s_state & EXT2_ERROR_FS) ||
484 !(fs->super->s_state & EXT2_VALID_FS) ||
485 fs->super->s_lastcheck < fs->super->s_mtime))
486 request_fsck_afterwards(fs);
487 if (fsck_requested)
488 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
489 direction > 0 ? "-b" : "-s", fs->device_name);
490 else
491 fprintf(stderr, _("Please run `resize2fs %s %s"),
492 direction > 0 ? "-b" : "-s", fs->device_name);
493
494 if (undo_file)
495 fprintf(stderr, _(" -z \"%s\""), undo_file);
496 if (direction > 0)
497 fprintf(stderr, _("' to enable 64-bit mode.\n"));
498 else
499 fprintf(stderr, _("' to disable 64-bit mode.\n"));
500 }
501
502 /*
503 * Rewrite directory blocks with checksums
504 */
505 struct rewrite_dir_context {
506 char *buf;
507 errcode_t errcode;
508 ext2_ino_t dir;
509 int is_htree;
510 };
511
512 static int rewrite_dir_block(ext2_filsys fs,
513 blk64_t *blocknr,
514 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
515 blk64_t ref_block EXT2FS_ATTR((unused)),
516 int ref_offset EXT2FS_ATTR((unused)),
517 void *priv_data)
518 {
519 struct ext2_dx_countlimit *dcl = NULL;
520 struct rewrite_dir_context *ctx = priv_data;
521 int dcl_offset, changed = 0;
522
523 ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
524 ctx->dir);
525 if (ctx->errcode)
526 return BLOCK_ABORT;
527
528 /* if htree node... */
529 if (ctx->is_htree)
530 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
531 &dcl, &dcl_offset);
532 if (dcl) {
533 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
534 /* Ensure limit is the max size */
535 int max_entries = (fs->blocksize - dcl_offset) /
536 sizeof(struct ext2_dx_entry);
537 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
538 changed = 1;
539 dcl->limit = ext2fs_cpu_to_le16(max_entries);
540 }
541 } else {
542 /* If htree block is full then rebuild the dir */
543 if (ext2fs_le16_to_cpu(dcl->count) ==
544 ext2fs_le16_to_cpu(dcl->limit)) {
545 request_dir_fsck_afterwards(fs);
546 return 0;
547 }
548 /*
549 * Ensure dcl->limit is small enough to leave room for
550 * the checksum tail.
551 */
552 int max_entries = (fs->blocksize - (dcl_offset +
553 sizeof(struct ext2_dx_tail))) /
554 sizeof(struct ext2_dx_entry);
555 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
556 dcl->limit = ext2fs_cpu_to_le16(max_entries);
557 /* Always rewrite checksum */
558 changed = 1;
559 }
560 } else {
561 unsigned int rec_len, name_size;
562 char *top = ctx->buf + fs->blocksize;
563 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
564 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
565
566 /* Find last and penultimate dirent */
567 while ((char *)de < top) {
568 penultimate_de = last_de;
569 last_de = de;
570 ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
571 if (!ctx->errcode && !rec_len)
572 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
573 if (ctx->errcode)
574 return BLOCK_ABORT;
575 de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
576 }
577 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
578 if (ctx->errcode)
579 return BLOCK_ABORT;
580 name_size = ext2fs_dirent_name_len(last_de);
581
582 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
583 if (!penultimate_de)
584 return 0;
585 if (last_de->inode ||
586 name_size ||
587 rec_len != sizeof(struct ext2_dir_entry_tail))
588 return 0;
589 /*
590 * The last dirent is unused and the right length to
591 * have stored a checksum. Erase it.
592 */
593 ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
594 &rec_len);
595 if (!rec_len)
596 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
597 if (ctx->errcode)
598 return BLOCK_ABORT;
599 ext2fs_set_rec_len(fs, rec_len +
600 sizeof(struct ext2_dir_entry_tail),
601 penultimate_de);
602 changed = 1;
603 } else {
604 unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
605 struct ext2_dir_entry_tail *t;
606
607 /*
608 * If the last dirent looks like the tail, just update
609 * the checksum.
610 */
611 if (!last_de->inode &&
612 rec_len == csum_size) {
613 t = (struct ext2_dir_entry_tail *)last_de;
614 t->det_reserved_name_len =
615 EXT2_DIR_NAME_LEN_CSUM;
616 changed = 1;
617 goto out;
618 }
619 if (name_size & 3)
620 name_size = (name_size & ~3) + 4;
621 /* If there's not enough space for the tail, e2fsck */
622 if (rec_len <= (8 + name_size + csum_size)) {
623 request_dir_fsck_afterwards(fs);
624 return 0;
625 }
626 /* Shorten that last de and insert the tail */
627 ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
628 t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
629 ext2fs_initialize_dirent_tail(fs, t);
630
631 /* Always update checksum */
632 changed = 1;
633 }
634 }
635
636 out:
637 if (!changed)
638 return 0;
639
640 ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
641 0, ctx->dir);
642 if (ctx->errcode)
643 return BLOCK_ABORT;
644
645 return 0;
646 }
647
648 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
649 struct ext2_inode *inode)
650 {
651 errcode_t retval;
652 struct rewrite_dir_context ctx;
653
654 retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
655 if (retval)
656 return retval;
657
658 ctx.is_htree = (inode->i_flags & EXT2_INDEX_FL);
659 ctx.dir = dir;
660 ctx.errcode = 0;
661 retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
662 BLOCK_FLAG_DATA_ONLY,
663 0, rewrite_dir_block, &ctx);
664
665 ext2fs_free_mem(&ctx.buf);
666 if (retval)
667 return retval;
668
669 return ctx.errcode;
670 }
671
672 /*
673 * Context information that does not change across rewrite_one_inode()
674 * invocations.
675 */
676 struct rewrite_context {
677 ext2_filsys fs;
678 struct ext2_inode *zero_inode;
679 char *ea_buf;
680 int inode_size;
681 };
682
683 #define fatal_err(code, args...) \
684 do { \
685 com_err(__func__, code, args); \
686 exit(1); \
687 } while (0);
688
689 static void update_ea_inode_hash(struct rewrite_context *ctx, ext2_ino_t ino,
690 struct ext2_inode *inode)
691 {
692 errcode_t retval;
693 ext2_file_t file;
694 __u32 hash;
695
696 retval = ext2fs_file_open(ctx->fs, ino, 0, &file);
697 if (retval)
698 fatal_err(retval, "open ea_inode");
699 retval = ext2fs_file_read(file, ctx->ea_buf, inode->i_size,
700 NULL);
701 if (retval)
702 fatal_err(retval, "read ea_inode");
703 retval = ext2fs_file_close(file);
704 if (retval)
705 fatal_err(retval, "close ea_inode");
706
707 hash = ext2fs_crc32c_le(ctx->fs->csum_seed,
708 (unsigned char *) ctx->ea_buf, inode->i_size);
709 ext2fs_set_ea_inode_hash(inode, hash);
710 }
711
712 static int update_xattr_entry_hashes(ext2_filsys fs,
713 struct ext2_ext_attr_entry *entry,
714 struct ext2_ext_attr_entry *end)
715 {
716 int modified = 0;
717 errcode_t retval;
718
719 while (entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry)) {
720 if (entry->e_value_inum) {
721 retval = ext2fs_ext_attr_hash_entry2(fs, entry, NULL,
722 &entry->e_hash);
723 if (retval)
724 fatal_err(retval, "hash ea_inode entry");
725 modified = 1;
726 }
727 entry = EXT2_EXT_ATTR_NEXT(entry);
728 }
729 return modified;
730 }
731
732 static void update_inline_xattr_hashes(struct rewrite_context *ctx,
733 struct ext2_inode_large *inode)
734 {
735 struct ext2_ext_attr_entry *start, *end;
736 __u32 *ea_magic;
737
738 if (inode->i_extra_isize == 0)
739 return;
740
741 if (inode->i_extra_isize & 3 ||
742 inode->i_extra_isize > ctx->inode_size - EXT2_GOOD_OLD_INODE_SIZE)
743 fatal_err(EXT2_ET_INODE_CORRUPTED, "bad i_extra_isize")
744
745 ea_magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
746 inode->i_extra_isize);
747 if (*ea_magic != EXT2_EXT_ATTR_MAGIC)
748 return;
749
750 start = (struct ext2_ext_attr_entry *)(ea_magic + 1);
751 end = (struct ext2_ext_attr_entry *)((char *)inode + ctx->inode_size);
752
753 update_xattr_entry_hashes(ctx->fs, start, end);
754 }
755
756 static void update_block_xattr_hashes(struct rewrite_context *ctx,
757 char *block_buf)
758 {
759 struct ext2_ext_attr_header *header;
760 struct ext2_ext_attr_entry *start, *end;
761
762 header = (struct ext2_ext_attr_header *)block_buf;
763 if (header->h_magic != EXT2_EXT_ATTR_MAGIC)
764 return;
765
766 start = (struct ext2_ext_attr_entry *)(header+1);
767 end = (struct ext2_ext_attr_entry *)(block_buf + ctx->fs->blocksize);
768
769 if (update_xattr_entry_hashes(ctx->fs, start, end))
770 ext2fs_ext_attr_block_rehash(header, end);
771 }
772
773 static void rewrite_one_inode(struct rewrite_context *ctx, ext2_ino_t ino,
774 struct ext2_inode *inode)
775 {
776 blk64_t file_acl_block;
777 errcode_t retval;
778
779 if (!ext2fs_test_inode_bitmap2(ctx->fs->inode_map, ino)) {
780 if (!memcmp(inode, ctx->zero_inode, ctx->inode_size))
781 return;
782 memset(inode, 0, ctx->inode_size);
783 }
784
785 if (inode->i_flags & EXT4_EA_INODE_FL)
786 update_ea_inode_hash(ctx, ino, inode);
787
788 if (ctx->inode_size != EXT2_GOOD_OLD_INODE_SIZE)
789 update_inline_xattr_hashes(ctx,
790 (struct ext2_inode_large *)inode);
791
792 retval = ext2fs_write_inode_full(ctx->fs, ino, inode, ctx->inode_size);
793 if (retval)
794 fatal_err(retval, "while writing inode");
795
796 retval = ext2fs_fix_extents_checksums(ctx->fs, ino, inode);
797 if (retval)
798 fatal_err(retval, "while rewriting extents");
799
800 if (LINUX_S_ISDIR(inode->i_mode) &&
801 ext2fs_inode_has_valid_blocks2(ctx->fs, inode)) {
802 retval = rewrite_directory(ctx->fs, ino, inode);
803 if (retval)
804 fatal_err(retval, "while rewriting directories");
805 }
806
807 file_acl_block = ext2fs_file_acl_block(ctx->fs, inode);
808 if (!file_acl_block)
809 return;
810
811 retval = ext2fs_read_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
812 ino);
813 if (retval)
814 fatal_err(retval, "while rewriting extended attribute");
815
816 update_block_xattr_hashes(ctx, ctx->ea_buf);
817 retval = ext2fs_write_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
818 ino);
819 if (retval)
820 fatal_err(retval, "while rewriting extended attribute");
821 }
822
823 /*
824 * Forcibly set checksums in all inodes.
825 */
826 static void rewrite_inodes(ext2_filsys fs)
827 {
828 ext2_inode_scan scan;
829 errcode_t retval;
830 ext2_ino_t ino;
831 struct ext2_inode *inode;
832 int pass;
833 struct rewrite_context ctx = {
834 .fs = fs,
835 .inode_size = EXT2_INODE_SIZE(fs->super),
836 };
837
838 if (fs->super->s_creator_os == EXT2_OS_HURD)
839 return;
840
841 retval = ext2fs_get_mem(ctx.inode_size, &inode);
842 if (retval)
843 fatal_err(retval, "while allocating memory");
844
845 retval = ext2fs_get_memzero(ctx.inode_size, &ctx.zero_inode);
846 if (retval)
847 fatal_err(retval, "while allocating memory");
848
849 retval = ext2fs_get_mem(64 * 1024, &ctx.ea_buf);
850 if (retval)
851 fatal_err(retval, "while allocating memory");
852
853 /*
854 * Extended attribute inodes have a lookup hash that needs to be
855 * recalculated with the new csum_seed. Other inodes referencing xattr
856 * inodes need this value to be up to date. That's why we do two passes:
857 *
858 * pass 1: update xattr inodes to update their lookup hash as well as
859 * other checksums.
860 *
861 * pass 2: go over other inodes to update their checksums.
862 */
863 if (ext2fs_has_feature_ea_inode(fs->super))
864 pass = 1;
865 else
866 pass = 2;
867 for (;pass <= 2; pass++) {
868 retval = ext2fs_open_inode_scan(fs, 0, &scan);
869 if (retval)
870 fatal_err(retval, "while opening inode scan");
871
872 do {
873 retval = ext2fs_get_next_inode_full(scan, &ino, inode,
874 ctx.inode_size);
875 if (retval)
876 fatal_err(retval, "while getting next inode");
877 if (!ino)
878 break;
879
880 if (((pass == 1) &&
881 (inode->i_flags & EXT4_EA_INODE_FL)) ||
882 ((pass == 2) &&
883 !(inode->i_flags & EXT4_EA_INODE_FL)))
884 rewrite_one_inode(&ctx, ino, inode);
885 } while (ino);
886
887 ext2fs_close_inode_scan(scan);
888 }
889
890 ext2fs_free_mem(&ctx.zero_inode);
891 ext2fs_free_mem(&ctx.ea_buf);
892 ext2fs_free_mem(&inode);
893 }
894
895 static void rewrite_metadata_checksums(ext2_filsys fs)
896 {
897 errcode_t retval;
898 dgrp_t i;
899
900 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
901 ext2fs_init_csum_seed(fs);
902 for (i = 0; i < fs->group_desc_count; i++)
903 ext2fs_group_desc_csum_set(fs, i);
904 retval = ext2fs_read_bitmaps(fs);
905 if (retval)
906 fatal_err(retval, "while reading bitmaps");
907 rewrite_inodes(fs);
908 ext2fs_mark_ib_dirty(fs);
909 ext2fs_mark_bb_dirty(fs);
910 ext2fs_mmp_update2(fs, 1);
911 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
912 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
913 if (ext2fs_has_feature_metadata_csum(fs->super))
914 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
915 else
916 fs->super->s_checksum_type = 0;
917 ext2fs_mark_super_dirty(fs);
918 }
919
920 static void enable_uninit_bg(ext2_filsys fs)
921 {
922 struct ext2_group_desc *gd;
923 dgrp_t i;
924
925 for (i = 0; i < fs->group_desc_count; i++) {
926 gd = ext2fs_group_desc(fs, fs->group_desc, i);
927 gd->bg_itable_unused = 0;
928 gd->bg_flags = EXT2_BG_INODE_ZEROED;
929 ext2fs_group_desc_csum_set(fs, i);
930 }
931 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
932 }
933
934 static errcode_t zero_empty_inodes(ext2_filsys fs)
935 {
936 int length = EXT2_INODE_SIZE(fs->super);
937 struct ext2_inode *inode = NULL;
938 ext2_inode_scan scan;
939 errcode_t retval;
940 ext2_ino_t ino;
941
942 retval = ext2fs_open_inode_scan(fs, 0, &scan);
943 if (retval)
944 goto out;
945
946 retval = ext2fs_get_mem(length, &inode);
947 if (retval)
948 goto out;
949
950 do {
951 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
952 if (retval)
953 goto out;
954 if (!ino)
955 break;
956 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
957 memset(inode, 0, length);
958 retval = ext2fs_write_inode_full(fs, ino, inode,
959 length);
960 if (retval)
961 goto out;
962 }
963 } while (1);
964
965 out:
966 ext2fs_free_mem(&inode);
967 ext2fs_close_inode_scan(scan);
968 return retval;
969 }
970
971 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
972 {
973 struct ext2_group_desc *gd;
974 dgrp_t i;
975 errcode_t retval;
976 blk64_t b, c, d;
977
978 /* Load bitmaps to ensure that the uninit ones get written out */
979 fs->super->s_feature_ro_compat |= csum_feature_flag;
980 retval = ext2fs_read_bitmaps(fs);
981 fs->super->s_feature_ro_compat &= ~csum_feature_flag;
982 if (retval) {
983 com_err("disable_uninit_bg", retval,
984 "while reading bitmaps");
985 request_fsck_afterwards(fs);
986 return retval;
987 }
988 ext2fs_mark_ib_dirty(fs);
989 ext2fs_mark_bb_dirty(fs);
990
991 /* If we're only turning off uninit_bg, zero the inodes */
992 if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
993 retval = zero_empty_inodes(fs);
994 if (retval) {
995 com_err("disable_uninit_bg", retval,
996 "while zeroing unused inodes");
997 request_fsck_afterwards(fs);
998 return retval;
999 }
1000 }
1001
1002 /* The bbitmap is zeroed; we must mark group metadata blocks in use */
1003 for (i = 0; i < fs->group_desc_count; i++) {
1004 b = ext2fs_block_bitmap_loc(fs, i);
1005 ext2fs_mark_block_bitmap2(fs->block_map, b);
1006 b = ext2fs_inode_bitmap_loc(fs, i);
1007 ext2fs_mark_block_bitmap2(fs->block_map, b);
1008
1009 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
1010 if (retval == 0 && b)
1011 ext2fs_mark_block_bitmap2(fs->block_map, b);
1012 if (retval == 0 && c)
1013 ext2fs_mark_block_bitmap2(fs->block_map, c);
1014 if (retval == 0 && d)
1015 ext2fs_mark_block_bitmap2(fs->block_map, d);
1016 if (retval) {
1017 com_err("disable_uninit_bg", retval,
1018 "while initializing block bitmaps");
1019 request_fsck_afterwards(fs);
1020 }
1021
1022 gd = ext2fs_group_desc(fs, fs->group_desc, i);
1023 gd->bg_itable_unused = 0;
1024 gd->bg_flags = 0;
1025 ext2fs_group_desc_csum_set(fs, i);
1026 }
1027 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1028 ext2fs_mark_super_dirty(fs);
1029
1030 return 0;
1031 }
1032
1033 static void
1034 try_confirm_csum_seed_support(void)
1035 {
1036 if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK))
1037 fputs(_("WARNING: Could not confirm kernel support for "
1038 "metadata_csum_seed.\n This requires Linux >= "
1039 "v4.4.\n"), stderr);
1040 }
1041
1042 /*
1043 * Update the feature set as provided by the user.
1044 */
1045 static int update_feature_set(ext2_filsys fs, char *features)
1046 {
1047 struct ext2_super_block *sb = fs->super;
1048 __u32 old_features[3];
1049 int type_err;
1050 unsigned int mask_err;
1051 errcode_t err;
1052 enum quota_type qtype;
1053
1054 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
1055 ((&sb->s_feature_compat)[(type)] & (mask)))
1056 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
1057 !((&sb->s_feature_compat)[(type)] & (mask)))
1058 #define FEATURE_CHANGED(type, mask) ((mask) & \
1059 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
1060
1061 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
1062 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
1063 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
1064
1065 if (e2p_edit_feature2(features, &sb->s_feature_compat,
1066 ok_features, clear_ok_features,
1067 &type_err, &mask_err)) {
1068 if (!mask_err)
1069 fprintf(stderr,
1070 _("Invalid filesystem option set: %s\n"),
1071 features);
1072 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
1073 fprintf(stderr, _("Clearing filesystem feature '%s' "
1074 "not supported.\n"),
1075 e2p_feature2string(type_err &
1076 E2P_FEATURE_TYPE_MASK,
1077 mask_err));
1078 else
1079 fprintf(stderr, _("Setting filesystem feature '%s' "
1080 "not supported.\n"),
1081 e2p_feature2string(type_err, mask_err));
1082 return 1;
1083 }
1084
1085 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1086 if ((mount_flags & EXT2_MF_MOUNTED) &&
1087 !(mount_flags & EXT2_MF_READONLY)) {
1088 fputs(_("The has_journal feature may only be "
1089 "cleared when the filesystem is\n"
1090 "unmounted or mounted "
1091 "read-only.\n"), stderr);
1092 return 1;
1093 }
1094 if (ext2fs_has_feature_journal_needs_recovery(sb) &&
1095 f_flag < 2) {
1096 fputs(_("The needs_recovery flag is set. "
1097 "Please run e2fsck before clearing\n"
1098 "the has_journal flag.\n"), stderr);
1099 return 1;
1100 }
1101 if (sb->s_journal_inum) {
1102 if (remove_journal_inode(fs))
1103 return 1;
1104 }
1105 if (sb->s_journal_dev) {
1106 if (remove_journal_device(fs))
1107 return 1;
1108 }
1109 }
1110
1111 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1112 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1113 if (ext2fs_has_feature_meta_bg(sb)) {
1114 fputs(_("Setting filesystem feature 'sparse_super' "
1115 "not supported\nfor filesystems with "
1116 "the meta_bg feature enabled.\n"),
1117 stderr);
1118 return 1;
1119 }
1120 }
1121
1122 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1123 int error;
1124
1125 if ((mount_flags & EXT2_MF_MOUNTED) ||
1126 (mount_flags & EXT2_MF_READONLY)) {
1127 fputs(_("The multiple mount protection feature can't\n"
1128 "be set if the filesystem is mounted or\n"
1129 "read-only.\n"), stderr);
1130 return 1;
1131 }
1132
1133 error = ext2fs_mmp_init(fs);
1134 if (error) {
1135 fputs(_("\nError while enabling multiple mount "
1136 "protection feature."), stderr);
1137 return 1;
1138 }
1139
1140 /*
1141 * We want to update group desc with the new free blocks count
1142 */
1143 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1144
1145 printf(_("Multiple mount protection has been enabled "
1146 "with update interval %ds.\n"),
1147 sb->s_mmp_update_interval);
1148 }
1149
1150 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1151 int error;
1152
1153 if (mount_flags & EXT2_MF_READONLY) {
1154 fputs(_("The multiple mount protection feature cannot\n"
1155 "be disabled if the filesystem is readonly.\n"),
1156 stderr);
1157 return 1;
1158 }
1159
1160 error = ext2fs_read_bitmaps(fs);
1161 if (error) {
1162 fputs(_("Error while reading bitmaps\n"), stderr);
1163 return 1;
1164 }
1165
1166 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1167 if (error) {
1168 struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1169
1170 if (error == EXT2_ET_MMP_MAGIC_INVALID)
1171 printf(_("Magic number in MMP block does not "
1172 "match. expected: %x, actual: %x\n"),
1173 EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1174 else
1175 com_err(program_name, error, "%s",
1176 _("while reading MMP block."));
1177 goto mmp_error;
1178 }
1179
1180 /* We need to force out the group descriptors as well */
1181 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1182 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1183 mmp_error:
1184 sb->s_mmp_block = 0;
1185 sb->s_mmp_update_interval = 0;
1186 }
1187
1188 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1189 /*
1190 * If adding a journal flag, let the create journal
1191 * code below handle setting the flag and creating the
1192 * journal. We supply a default size if necessary.
1193 */
1194 if (!journal_size)
1195 journal_size = -1;
1196 ext2fs_clear_feature_journal(sb);
1197 }
1198
1199 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1200 if (!sb->s_def_hash_version)
1201 sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1202 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1203 uuid_generate((unsigned char *) sb->s_hash_seed);
1204 }
1205
1206 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1207 if (ext2fs_check_desc(fs)) {
1208 fputs(_("Clearing the flex_bg flag would "
1209 "cause the the filesystem to be\n"
1210 "inconsistent.\n"), stderr);
1211 return 1;
1212 }
1213 }
1214
1215 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1216 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1217 if ((mount_flags & EXT2_MF_MOUNTED) &&
1218 !(mount_flags & EXT2_MF_READONLY)) {
1219 fputs(_("The huge_file feature may only be "
1220 "cleared when the filesystem is\n"
1221 "unmounted or mounted "
1222 "read-only.\n"), stderr);
1223 return 1;
1224 }
1225 }
1226
1227 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1228 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1229 if (check_fsck_needed(fs,
1230 _("Enabling checksums could take some time.")))
1231 return 1;
1232 if (mount_flags & EXT2_MF_MOUNTED) {
1233 fputs(_("Cannot enable metadata_csum on a mounted "
1234 "filesystem!\n"), stderr);
1235 return 1;
1236 }
1237 if (!ext2fs_has_feature_extents(fs->super))
1238 printf("%s",
1239 _("Extents are not enabled. The file extent "
1240 "tree can be checksummed, whereas block maps "
1241 "cannot. Not enabling extents reduces the "
1242 "coverage of metadata checksumming. "
1243 "Re-run with -O extent to rectify.\n"));
1244 if (!ext2fs_has_feature_64bit(fs->super))
1245 printf("%s",
1246 _("64-bit filesystem support is not enabled. "
1247 "The larger fields afforded by this feature "
1248 "enable full-strength checksumming. "
1249 "Run resize2fs -b to rectify.\n"));
1250 rewrite_checksums = 1;
1251 /* metadata_csum supersedes uninit_bg */
1252 ext2fs_clear_feature_gdt_csum(fs->super);
1253
1254 /* if uninit_bg was previously off, rewrite group desc */
1255 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1256 EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1257 enable_uninit_bg(fs);
1258
1259 /*
1260 * Since metadata_csum supersedes uninit_bg, pretend like
1261 * uninit_bg has been off all along.
1262 */
1263 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1264 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1265 }
1266
1267 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1268 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1269 __u32 test_features[3];
1270
1271 if (check_fsck_needed(fs,
1272 _("Disabling checksums could take some time.")))
1273 return 1;
1274 if (mount_flags & EXT2_MF_MOUNTED) {
1275 fputs(_("Cannot disable metadata_csum on a mounted "
1276 "filesystem!\n"), stderr);
1277 return 1;
1278 }
1279 rewrite_checksums = 1;
1280
1281 /* Enable uninit_bg unless the user expressly turned it off */
1282 memcpy(test_features, old_features, sizeof(test_features));
1283 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1284 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1285 e2p_edit_feature2(features, test_features, ok_features,
1286 clear_ok_features, NULL, NULL);
1287 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1288 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1289 ext2fs_set_feature_gdt_csum(fs->super);
1290
1291 /*
1292 * If we're turning off metadata_csum and not turning on
1293 * uninit_bg, rewrite group desc.
1294 */
1295 if (!ext2fs_has_feature_gdt_csum(fs->super)) {
1296 err = disable_uninit_bg(fs,
1297 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1298 if (err)
1299 return 1;
1300 } else
1301 /*
1302 * metadata_csum previously provided uninit_bg, so if
1303 * we're also setting the uninit_bg feature bit,
1304 * pretend like it was previously enabled. Checksums
1305 * will be rewritten with crc16 later.
1306 */
1307 old_features[E2P_FEATURE_RO_INCOMPAT] |=
1308 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1309 fs->super->s_checksum_seed = 0;
1310 ext2fs_clear_feature_csum_seed(fs->super);
1311 }
1312
1313 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1314 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1315 if (mount_flags & EXT2_MF_MOUNTED) {
1316 fputs(_("Cannot enable uninit_bg on a mounted "
1317 "filesystem!\n"), stderr);
1318 return 1;
1319 }
1320
1321 /* Do not enable uninit_bg when metadata_csum enabled */
1322 if (ext2fs_has_feature_metadata_csum(fs->super))
1323 ext2fs_clear_feature_gdt_csum(fs->super);
1324 else
1325 enable_uninit_bg(fs);
1326 }
1327
1328 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1329 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1330 if (mount_flags & EXT2_MF_MOUNTED) {
1331 fputs(_("Cannot disable uninit_bg on a mounted "
1332 "filesystem!\n"), stderr);
1333 return 1;
1334 }
1335
1336 err = disable_uninit_bg(fs,
1337 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1338 if (err)
1339 return 1;
1340 }
1341
1342 /*
1343 * We don't actually toggle 64bit; resize2fs does that. But this
1344 * must come after the metadata_csum feature_on so that it won't
1345 * complain about the lack of 64bit.
1346 */
1347 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1348 EXT4_FEATURE_INCOMPAT_64BIT)) {
1349 if (mount_flags & EXT2_MF_MOUNTED) {
1350 fprintf(stderr, _("Cannot enable 64-bit mode "
1351 "while mounted!\n"));
1352 return 1;
1353 }
1354 ext2fs_clear_feature_64bit(sb);
1355 feature_64bit = 1;
1356 }
1357 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1358 EXT4_FEATURE_INCOMPAT_64BIT)) {
1359 if (mount_flags & EXT2_MF_MOUNTED) {
1360 fprintf(stderr, _("Cannot disable 64-bit mode "
1361 "while mounted!\n"));
1362 return 1;
1363 }
1364 ext2fs_set_feature_64bit(sb);
1365 feature_64bit = -1;
1366 }
1367
1368 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1369 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1370 /*
1371 * Set the Q_flag here and handle the quota options in the code
1372 * below.
1373 */
1374 if (!Q_flag) {
1375 Q_flag = 1;
1376 /* Enable usr/grp quota by default */
1377 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1378 if (qtype != PRJQUOTA)
1379 quota_enable[qtype] = QOPT_ENABLE;
1380 else
1381 quota_enable[qtype] = QOPT_DISABLE;
1382 }
1383 }
1384 ext2fs_clear_feature_quota(sb);
1385 }
1386
1387 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1388 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1389 if (fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1390 fprintf(stderr, _("Cannot enable project feature; "
1391 "inode size too small.\n"));
1392 return 1;
1393 }
1394 Q_flag = 1;
1395 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1396 }
1397
1398 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1399 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1400 Q_flag = 1;
1401 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1402 }
1403
1404 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1405 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1406 /*
1407 * Set the Q_flag here and handle the quota options in the code
1408 * below.
1409 */
1410 if (Q_flag)
1411 fputs(_("\nWarning: '^quota' option overrides '-Q'"
1412 "arguments.\n"), stderr);
1413 Q_flag = 1;
1414 /* Disable all quota by default */
1415 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1416 quota_enable[qtype] = QOPT_DISABLE;
1417 }
1418
1419 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1420 if (ext2fs_has_feature_casefold(sb)) {
1421 fputs(_("Cannot enable encrypt feature on filesystems "
1422 "with the encoding feature enabled.\n"),
1423 stderr);
1424 return 1;
1425 }
1426 fs->super->s_encrypt_algos[0] =
1427 EXT4_ENCRYPTION_MODE_AES_256_XTS;
1428 fs->super->s_encrypt_algos[1] =
1429 EXT4_ENCRYPTION_MODE_AES_256_CTS;
1430 }
1431
1432 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1433 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1434 if (!ext2fs_has_feature_metadata_csum(sb)) {
1435 fputs(_("Setting feature 'metadata_csum_seed' "
1436 "is only supported\non filesystems with "
1437 "the metadata_csum feature enabled.\n"),
1438 stderr);
1439 return 1;
1440 }
1441 try_confirm_csum_seed_support();
1442 fs->super->s_checksum_seed = fs->csum_seed;
1443 }
1444
1445 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1446 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1447 __le32 uuid_seed;
1448
1449 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1450 sizeof(fs->super->s_uuid));
1451 if (fs->super->s_checksum_seed != uuid_seed) {
1452 if (mount_flags & (EXT2_MF_BUSY|EXT2_MF_MOUNTED)) {
1453 fputs(_("UUID has changed since enabling "
1454 "metadata_csum. Filesystem must be unmounted "
1455 "\nto safely rewrite all metadata to match the new UUID.\n"),
1456 stderr);
1457 return 1;
1458 }
1459 if (check_fsck_needed(fs, _("Recalculating checksums "
1460 "could take some time.")))
1461 return 1;
1462 rewrite_checksums = 1;
1463 }
1464 }
1465
1466 if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1467 (sb->s_feature_compat || sb->s_feature_ro_compat ||
1468 sb->s_feature_incompat))
1469 ext2fs_update_dynamic_rev(fs);
1470
1471 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1472 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1473 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1474 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1475 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1476 EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1477 FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1478 EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1479 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1480 EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1481 request_fsck_afterwards(fs);
1482
1483 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1484 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1485 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1486 ext2fs_mark_super_dirty(fs);
1487
1488 return 0;
1489 }
1490
1491 /*
1492 * Add a journal to the filesystem.
1493 */
1494 static int add_journal(ext2_filsys fs)
1495 {
1496 unsigned long journal_blocks;
1497 errcode_t retval;
1498 ext2_filsys jfs;
1499 io_manager io_ptr;
1500
1501 if (ext2fs_has_feature_journal(fs->super)) {
1502 fputs(_("The filesystem already has a journal.\n"), stderr);
1503 goto err;
1504 }
1505 if (journal_device) {
1506 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1507 NULL))
1508 proceed_question(-1);
1509 check_mount(journal_device, 0, _("journal"));
1510 #ifdef CONFIG_TESTIO_DEBUG
1511 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1512 io_ptr = test_io_manager;
1513 test_io_backing_manager = unix_io_manager;
1514 } else
1515 #endif
1516 io_ptr = unix_io_manager;
1517 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1518 EXT2_FLAG_JOURNAL_DEV_OK, 0,
1519 fs->blocksize, io_ptr, &jfs);
1520 if (retval) {
1521 com_err(program_name, retval,
1522 _("\n\twhile trying to open journal on %s\n"),
1523 journal_device);
1524 goto err;
1525 }
1526 printf(_("Creating journal on device %s: "),
1527 journal_device);
1528 fflush(stdout);
1529
1530 retval = ext2fs_add_journal_device(fs, jfs);
1531 ext2fs_close_free(&jfs);
1532 if (retval) {
1533 com_err(program_name, retval,
1534 _("while adding filesystem to journal on %s"),
1535 journal_device);
1536 goto err;
1537 }
1538 fputs(_("done\n"), stdout);
1539 } else if (journal_size) {
1540 fputs(_("Creating journal inode: "), stdout);
1541 fflush(stdout);
1542 journal_blocks = figure_journal_size(journal_size, fs);
1543
1544 if (journal_location_string)
1545 journal_location =
1546 parse_num_blocks2(journal_location_string,
1547 fs->super->s_log_block_size);
1548 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
1549 journal_location,
1550 journal_flags);
1551 if (retval) {
1552 fprintf(stderr, "\n");
1553 com_err(program_name, retval, "%s",
1554 _("\n\twhile trying to create journal file"));
1555 return retval;
1556 } else
1557 fputs(_("done\n"), stdout);
1558 /*
1559 * If the filesystem wasn't mounted, we need to force
1560 * the block group descriptors out.
1561 */
1562 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1563 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1564 }
1565 print_check_message(fs->super->s_max_mnt_count,
1566 fs->super->s_checkinterval);
1567 return 0;
1568
1569 err:
1570 free(journal_device);
1571 return 1;
1572 }
1573
1574 static int handle_quota_options(ext2_filsys fs)
1575 {
1576 errcode_t retval;
1577 quota_ctx_t qctx;
1578 ext2_ino_t qf_ino;
1579 enum quota_type qtype;
1580 unsigned int qtype_bits = 0;
1581 int need_dirty = 0;
1582
1583 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1584 if (quota_enable[qtype] != 0)
1585 break;
1586 if (qtype == MAXQUOTAS)
1587 /* Nothing to do. */
1588 return 0;
1589
1590 if (quota_enable[PRJQUOTA] == QOPT_ENABLE &&
1591 fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1592 fprintf(stderr, _("Cannot enable project quota; "
1593 "inode size too small.\n"));
1594 return 1;
1595 }
1596
1597 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1598 if (quota_enable[qtype] == QOPT_ENABLE)
1599 qtype_bits |= 1 << qtype;
1600 }
1601
1602 retval = quota_init_context(&qctx, fs, qtype_bits);
1603 if (retval) {
1604 com_err(program_name, retval,
1605 _("while initializing quota context in support library"));
1606 return 1;
1607 }
1608
1609 if (qtype_bits)
1610 quota_compute_usage(qctx);
1611
1612 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1613 if (quota_enable[qtype] == QOPT_ENABLE &&
1614 *quota_sb_inump(fs->super, qtype) == 0) {
1615 if ((qf_ino = quota_file_exists(fs, qtype)) > 0) {
1616 retval = quota_update_limits(qctx, qf_ino,
1617 qtype);
1618 if (retval) {
1619 com_err(program_name, retval,
1620 _("while updating quota limits (%d)"),
1621 qtype);
1622 return 1;
1623 }
1624 }
1625 retval = quota_write_inode(qctx, 1 << qtype);
1626 if (retval) {
1627 com_err(program_name, retval,
1628 _("while writing quota file (%d)"),
1629 qtype);
1630 return 1;
1631 }
1632 /* Enable Quota feature if one of quota enabled */
1633 if (!ext2fs_has_feature_quota(fs->super)) {
1634 ext2fs_set_feature_quota(fs->super);
1635 need_dirty = 1;
1636 }
1637 if (qtype == PRJQUOTA &&
1638 !ext2fs_has_feature_project(fs->super)) {
1639 ext2fs_set_feature_project(fs->super);
1640 need_dirty = 1;
1641 }
1642 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1643 retval = quota_remove_inode(fs, qtype);
1644 if (retval) {
1645 com_err(program_name, retval,
1646 _("while removing quota file (%d)"),
1647 qtype);
1648 return 1;
1649 }
1650 if (qtype == PRJQUOTA) {
1651 ext2fs_clear_feature_project(fs->super);
1652 need_dirty = 1;
1653 }
1654 }
1655 }
1656
1657 quota_release_context(&qctx);
1658 /* Clear Quota feature if all quota types disabled. */
1659 if (!qtype_bits) {
1660 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1661 if (*quota_sb_inump(fs->super, qtype))
1662 break;
1663 if (qtype == MAXQUOTAS) {
1664 ext2fs_clear_feature_quota(fs->super);
1665 need_dirty = 1;
1666 }
1667
1668 }
1669 if (need_dirty)
1670 ext2fs_mark_super_dirty(fs);
1671 return 0;
1672 }
1673
1674 static int option_handle_function(char *token)
1675 {
1676 if (strncmp(token, "usr", 3) == 0) {
1677 quota_enable[USRQUOTA] = QOPT_ENABLE;
1678 } else if (strncmp(token, "^usr", 4) == 0) {
1679 quota_enable[USRQUOTA] = QOPT_DISABLE;
1680 } else if (strncmp(token, "grp", 3) == 0) {
1681 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1682 } else if (strncmp(token, "^grp", 4) == 0) {
1683 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1684 } else if (strncmp(token, "prj", 3) == 0) {
1685 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1686 } else if (strncmp(token, "^prj", 4) == 0) {
1687 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1688 } else {
1689 fputs(_("\nBad quota options specified.\n\n"
1690 "Following valid quota options are available "
1691 "(pass by separating with comma):\n"
1692 "\t[^]usr[quota]\n"
1693 "\t[^]grp[quota]\n"
1694 "\t[^]prj[quota]\n"
1695 "\n\n"), stderr);
1696 return 1;
1697 }
1698 return 0;
1699 }
1700
1701 static void parse_e2label_options(int argc, char ** argv)
1702 {
1703 if ((argc < 2) || (argc > 3)) {
1704 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1705 exit(1);
1706 }
1707 io_options = strchr(argv[1], '?');
1708 if (io_options)
1709 *io_options++ = 0;
1710 device_name = blkid_get_devname(NULL, argv[1], NULL);
1711 if (!device_name) {
1712 com_err("e2label", 0, _("Unable to resolve '%s'"),
1713 argv[1]);
1714 exit(1);
1715 }
1716 open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
1717 if (argc == 3) {
1718 open_flag |= EXT2_FLAG_RW;
1719 L_flag = 1;
1720 new_label = argv[2];
1721 } else
1722 print_label++;
1723 }
1724
1725 static time_t parse_time(char *str)
1726 {
1727 struct tm ts;
1728
1729 if (strcmp(str, "now") == 0) {
1730 return (time(0));
1731 }
1732 memset(&ts, 0, sizeof(ts));
1733 #ifdef HAVE_STRPTIME
1734 strptime(str, "%Y%m%d%H%M%S", &ts);
1735 #else
1736 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1737 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1738 ts.tm_year -= 1900;
1739 ts.tm_mon -= 1;
1740 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1741 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1742 ts.tm_min > 59 || ts.tm_sec > 61)
1743 ts.tm_mday = 0;
1744 #endif
1745 if (ts.tm_mday == 0) {
1746 com_err(program_name, 0,
1747 _("Couldn't parse date/time specifier: %s"),
1748 str);
1749 usage();
1750 }
1751 ts.tm_isdst = -1;
1752 return (mktime(&ts));
1753 }
1754
1755 static void parse_tune2fs_options(int argc, char **argv)
1756 {
1757 int c;
1758 char *tmp;
1759 struct group *gr;
1760 struct passwd *pw;
1761 int ret;
1762 char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1763
1764 open_flag = 0;
1765 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1766 while ((c = getopt(argc, argv, optstring)) != EOF)
1767 switch (c) {
1768 case 'c':
1769 max_mount_count = strtol(optarg, &tmp, 0);
1770 if (*tmp || max_mount_count > 16000) {
1771 com_err(program_name, 0,
1772 _("bad mounts count - %s"),
1773 optarg);
1774 usage();
1775 }
1776 if (max_mount_count == 0)
1777 max_mount_count = -1;
1778 c_flag = 1;
1779 open_flag = EXT2_FLAG_RW;
1780 break;
1781 case 'C':
1782 mount_count = strtoul(optarg, &tmp, 0);
1783 if (*tmp || mount_count > 16000) {
1784 com_err(program_name, 0,
1785 _("bad mounts count - %s"),
1786 optarg);
1787 usage();
1788 }
1789 C_flag = 1;
1790 open_flag = EXT2_FLAG_RW;
1791 break;
1792 case 'e':
1793 if (strcmp(optarg, "continue") == 0)
1794 errors = EXT2_ERRORS_CONTINUE;
1795 else if (strcmp(optarg, "remount-ro") == 0)
1796 errors = EXT2_ERRORS_RO;
1797 else if (strcmp(optarg, "panic") == 0)
1798 errors = EXT2_ERRORS_PANIC;
1799 else {
1800 com_err(program_name, 0,
1801 _("bad error behavior - %s"),
1802 optarg);
1803 usage();
1804 }
1805 e_flag = 1;
1806 open_flag = EXT2_FLAG_RW;
1807 break;
1808 case 'E':
1809 extended_cmd = optarg;
1810 open_flag |= EXT2_FLAG_RW;
1811 break;
1812 case 'f': /* Force */
1813 f_flag++;
1814 break;
1815 case 'g':
1816 resgid = strtoul(optarg, &tmp, 0);
1817 if (*tmp) {
1818 gr = getgrnam(optarg);
1819 if (gr == NULL)
1820 tmp = optarg;
1821 else {
1822 resgid = gr->gr_gid;
1823 *tmp = 0;
1824 }
1825 }
1826 if (*tmp) {
1827 com_err(program_name, 0,
1828 _("bad gid/group name - %s"),
1829 optarg);
1830 usage();
1831 }
1832 g_flag = 1;
1833 open_flag = EXT2_FLAG_RW;
1834 break;
1835 case 'i':
1836 interval = strtoul(optarg, &tmp, 0);
1837 switch (*tmp) {
1838 case 's':
1839 tmp++;
1840 break;
1841 case '\0':
1842 case 'd':
1843 case 'D': /* days */
1844 interval *= 86400;
1845 if (*tmp != '\0')
1846 tmp++;
1847 break;
1848 case 'm':
1849 case 'M': /* months! */
1850 interval *= 86400 * 30;
1851 tmp++;
1852 break;
1853 case 'w':
1854 case 'W': /* weeks */
1855 interval *= 86400 * 7;
1856 tmp++;
1857 break;
1858 }
1859 if (*tmp) {
1860 com_err(program_name, 0,
1861 _("bad interval - %s"), optarg);
1862 usage();
1863 }
1864 i_flag = 1;
1865 open_flag = EXT2_FLAG_RW;
1866 break;
1867 case 'j':
1868 if (!journal_size)
1869 journal_size = -1;
1870 open_flag = EXT2_FLAG_RW;
1871 break;
1872 case 'J':
1873 parse_journal_opts(optarg);
1874 open_flag = EXT2_FLAG_RW;
1875 break;
1876 case 'l':
1877 l_flag = 1;
1878 break;
1879 case 'L':
1880 new_label = optarg;
1881 L_flag = 1;
1882 open_flag |= EXT2_FLAG_RW |
1883 EXT2_FLAG_JOURNAL_DEV_OK;
1884 break;
1885 case 'm':
1886 reserved_ratio = strtod(optarg, &tmp);
1887 if (*tmp || reserved_ratio > 50 ||
1888 reserved_ratio < 0) {
1889 com_err(program_name, 0,
1890 _("bad reserved block ratio - %s"),
1891 optarg);
1892 usage();
1893 }
1894 m_flag = 1;
1895 open_flag = EXT2_FLAG_RW;
1896 break;
1897 case 'M':
1898 new_last_mounted = optarg;
1899 M_flag = 1;
1900 open_flag = EXT2_FLAG_RW;
1901 break;
1902 case 'o':
1903 if (mntopts_cmd) {
1904 com_err(program_name, 0, "%s",
1905 _("-o may only be specified once"));
1906 usage();
1907 }
1908 mntopts_cmd = optarg;
1909 open_flag = EXT2_FLAG_RW;
1910 break;
1911 case 'O':
1912 if (features_cmd) {
1913 com_err(program_name, 0, "%s",
1914 _("-O may only be specified once"));
1915 usage();
1916 }
1917 features_cmd = optarg;
1918 open_flag = EXT2_FLAG_RW;
1919 break;
1920 case 'Q':
1921 Q_flag = 1;
1922 ret = parse_quota_opts(optarg, option_handle_function);
1923 if (ret)
1924 exit(1);
1925 open_flag = EXT2_FLAG_RW;
1926 break;
1927 case 'r':
1928 reserved_blocks = strtoul(optarg, &tmp, 0);
1929 if (*tmp) {
1930 com_err(program_name, 0,
1931 _("bad reserved blocks count - %s"),
1932 optarg);
1933 usage();
1934 }
1935 r_flag = 1;
1936 open_flag = EXT2_FLAG_RW;
1937 break;
1938 case 's': /* Deprecated */
1939 s_flag = atoi(optarg);
1940 open_flag = EXT2_FLAG_RW;
1941 break;
1942 case 'T':
1943 T_flag = 1;
1944 last_check_time = parse_time(optarg);
1945 open_flag = EXT2_FLAG_RW;
1946 break;
1947 case 'u':
1948 resuid = strtoul(optarg, &tmp, 0);
1949 if (*tmp) {
1950 pw = getpwnam(optarg);
1951 if (pw == NULL)
1952 tmp = optarg;
1953 else {
1954 resuid = pw->pw_uid;
1955 *tmp = 0;
1956 }
1957 }
1958 if (*tmp) {
1959 com_err(program_name, 0,
1960 _("bad uid/user name - %s"),
1961 optarg);
1962 usage();
1963 }
1964 u_flag = 1;
1965 open_flag = EXT2_FLAG_RW;
1966 break;
1967 case 'U':
1968 new_UUID = optarg;
1969 U_flag = 1;
1970 open_flag = EXT2_FLAG_RW |
1971 EXT2_FLAG_JOURNAL_DEV_OK;
1972 break;
1973 case 'I':
1974 new_inode_size = strtoul(optarg, &tmp, 0);
1975 if (*tmp) {
1976 com_err(program_name, 0,
1977 _("bad inode size - %s"),
1978 optarg);
1979 usage();
1980 }
1981 if (!((new_inode_size &
1982 (new_inode_size - 1)) == 0)) {
1983 com_err(program_name, 0,
1984 _("Inode size must be a "
1985 "power of two- %s"),
1986 optarg);
1987 usage();
1988 }
1989 open_flag = EXT2_FLAG_RW;
1990 I_flag = 1;
1991 break;
1992 case 'z':
1993 undo_file = optarg;
1994 break;
1995 default:
1996 usage();
1997 }
1998 if (optind < argc - 1 || optind == argc)
1999 usage();
2000 if (!open_flag && !l_flag)
2001 usage();
2002 io_options = strchr(argv[optind], '?');
2003 if (io_options)
2004 *io_options++ = 0;
2005 device_name = blkid_get_devname(NULL, argv[optind], NULL);
2006 if (!device_name) {
2007 com_err(program_name, 0, _("Unable to resolve '%s'"),
2008 argv[optind]);
2009 exit(1);
2010 }
2011 }
2012
2013 #ifdef CONFIG_BUILD_FINDFS
2014 void do_findfs(int argc, char **argv)
2015 {
2016 char *dev;
2017
2018 if ((argc != 2) ||
2019 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
2020 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
2021 exit(2);
2022 }
2023 dev = blkid_get_devname(NULL, argv[1], NULL);
2024 if (!dev) {
2025 com_err("findfs", 0, _("Unable to resolve '%s'"),
2026 argv[1]);
2027 exit(1);
2028 }
2029 puts(dev);
2030 exit(0);
2031 }
2032 #endif
2033
2034 static int parse_extended_opts(ext2_filsys fs, const char *opts)
2035 {
2036 char *buf, *token, *next, *p, *arg;
2037 int len, hash_alg;
2038 int r_usage = 0;
2039
2040 len = strlen(opts);
2041 buf = malloc(len+1);
2042 if (!buf) {
2043 fprintf(stderr, "%s",
2044 _("Couldn't allocate memory to parse options!\n"));
2045 return 1;
2046 }
2047 strcpy(buf, opts);
2048 for (token = buf; token && *token; token = next) {
2049 p = strchr(token, ',');
2050 next = 0;
2051 if (p) {
2052 *p = 0;
2053 next = p+1;
2054 }
2055 arg = strchr(token, '=');
2056 if (arg) {
2057 *arg = 0;
2058 arg++;
2059 }
2060 if (strcmp(token, "clear-mmp") == 0 ||
2061 strcmp(token, "clear_mmp") == 0) {
2062 clear_mmp = 1;
2063 } else if (strcmp(token, "mmp_update_interval") == 0) {
2064 unsigned long intv;
2065 if (!arg) {
2066 r_usage++;
2067 continue;
2068 }
2069 intv = strtoul(arg, &p, 0);
2070 if (*p) {
2071 fprintf(stderr,
2072 _("Invalid mmp_update_interval: %s\n"),
2073 arg);
2074 r_usage++;
2075 continue;
2076 }
2077 if (intv == 0) {
2078 intv = EXT4_MMP_UPDATE_INTERVAL;
2079 } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
2080 fprintf(stderr,
2081 _("mmp_update_interval too big: %lu\n"),
2082 intv);
2083 r_usage++;
2084 continue;
2085 }
2086 printf(P_("Setting multiple mount protection update "
2087 "interval to %lu second\n",
2088 "Setting multiple mount protection update "
2089 "interval to %lu seconds\n", intv),
2090 intv);
2091 fs->super->s_mmp_update_interval = intv;
2092 ext2fs_mark_super_dirty(fs);
2093 } else if (!strcmp(token, "force_fsck")) {
2094 fs->super->s_state |= EXT2_ERROR_FS;
2095 printf(_("Setting filesystem error flag to force fsck.\n"));
2096 ext2fs_mark_super_dirty(fs);
2097 } else if (!strcmp(token, "test_fs")) {
2098 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
2099 printf("Setting test filesystem flag\n");
2100 ext2fs_mark_super_dirty(fs);
2101 } else if (!strcmp(token, "^test_fs")) {
2102 fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
2103 printf("Clearing test filesystem flag\n");
2104 ext2fs_mark_super_dirty(fs);
2105 } else if (strcmp(token, "stride") == 0) {
2106 if (!arg) {
2107 r_usage++;
2108 continue;
2109 }
2110 stride = strtoul(arg, &p, 0);
2111 if (*p) {
2112 fprintf(stderr,
2113 _("Invalid RAID stride: %s\n"),
2114 arg);
2115 r_usage++;
2116 continue;
2117 }
2118 stride_set = 1;
2119 } else if (strcmp(token, "stripe-width") == 0 ||
2120 strcmp(token, "stripe_width") == 0) {
2121 if (!arg) {
2122 r_usage++;
2123 continue;
2124 }
2125 stripe_width = strtoul(arg, &p, 0);
2126 if (*p) {
2127 fprintf(stderr,
2128 _("Invalid RAID stripe-width: %s\n"),
2129 arg);
2130 r_usage++;
2131 continue;
2132 }
2133 stripe_width_set = 1;
2134 } else if (strcmp(token, "hash_alg") == 0 ||
2135 strcmp(token, "hash-alg") == 0) {
2136 if (!arg) {
2137 r_usage++;
2138 continue;
2139 }
2140 hash_alg = e2p_string2hash(arg);
2141 if (hash_alg < 0) {
2142 fprintf(stderr,
2143 _("Invalid hash algorithm: %s\n"),
2144 arg);
2145 r_usage++;
2146 continue;
2147 }
2148 fs->super->s_def_hash_version = hash_alg;
2149 printf(_("Setting default hash algorithm "
2150 "to %s (%d)\n"),
2151 arg, hash_alg);
2152 ext2fs_mark_super_dirty(fs);
2153 } else if (!strcmp(token, "mount_opts")) {
2154 if (!arg) {
2155 r_usage++;
2156 continue;
2157 }
2158 if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
2159 fprintf(stderr,
2160 "Extended mount options too long\n");
2161 continue;
2162 }
2163 ext_mount_opts = strdup(arg);
2164 } else
2165 r_usage++;
2166 }
2167 if (r_usage) {
2168 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
2169 "Extended options are separated by commas, "
2170 "and may take an argument which\n"
2171 "\tis set off by an equals ('=') sign.\n\n"
2172 "Valid extended options are:\n"
2173 "\tclear_mmp\n"
2174 "\thash_alg=<hash algorithm>\n"
2175 "\tmount_opts=<extended default mount options>\n"
2176 "\tmmp_update_interval=<mmp update interval in seconds>\n"
2177 "\tstride=<RAID per-disk chunk size in blocks>\n"
2178 "\tstripe_width=<RAID stride*data disks in blocks>\n"
2179 "\tforce_fsck\n"
2180 "\ttest_fs\n"
2181 "\t^test_fs\n"));
2182 free(buf);
2183 return 1;
2184 }
2185 free(buf);
2186
2187 return 0;
2188 }
2189
2190 /*
2191 * Fill in the block bitmap bmap with the information regarding the
2192 * blocks to be moved
2193 */
2194 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2195 ext2fs_block_bitmap bmap)
2196 {
2197 dgrp_t i;
2198 int retval;
2199 ext2_badblocks_list bb_list = 0;
2200 blk64_t j, needed_blocks = 0;
2201 blk64_t start_blk, end_blk;
2202
2203 retval = ext2fs_read_bb_inode(fs, &bb_list);
2204 if (retval)
2205 return retval;
2206
2207 for (i = 0; i < fs->group_desc_count; i++) {
2208 start_blk = ext2fs_inode_table_loc(fs, i) +
2209 fs->inode_blocks_per_group;
2210
2211 end_blk = ext2fs_inode_table_loc(fs, i) +
2212 new_ino_blks_per_grp;
2213
2214 for (j = start_blk; j < end_blk; j++) {
2215 if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2216 /*
2217 * IF the block is a bad block we fail
2218 */
2219 if (ext2fs_badblocks_list_test(bb_list, j)) {
2220 ext2fs_badblocks_list_free(bb_list);
2221 return ENOSPC;
2222 }
2223
2224 ext2fs_mark_block_bitmap2(bmap, j);
2225 } else {
2226 /*
2227 * We are going to use this block for
2228 * inode table. So mark them used.
2229 */
2230 ext2fs_mark_block_bitmap2(fs->block_map, j);
2231 }
2232 }
2233 needed_blocks += end_blk - start_blk;
2234 }
2235
2236 ext2fs_badblocks_list_free(bb_list);
2237 if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2238 return ENOSPC;
2239
2240 return 0;
2241 }
2242
2243 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2244 {
2245 dgrp_t group;
2246 group = ext2fs_group_of_blk2(fs, blk);
2247 if (ext2fs_block_bitmap_loc(fs, group) == blk)
2248 return 1;
2249 if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2250 return 1;
2251 return 0;
2252 }
2253
2254 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2255 {
2256 blk64_t start_blk, end_blk;
2257 start_blk = fs->super->s_first_data_block +
2258 EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2259 /*
2260 * We cannot get new block beyond end_blk for for the last block group
2261 * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2262 */
2263 end_blk = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2264 if (blk >= start_blk && blk <= end_blk)
2265 return 1;
2266 return 0;
2267 }
2268
2269 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2270 {
2271
2272 char *buf;
2273 dgrp_t group = 0;
2274 errcode_t retval;
2275 int meta_data = 0;
2276 blk64_t blk, new_blk, goal;
2277 struct blk_move *bmv;
2278
2279 retval = ext2fs_get_mem(fs->blocksize, &buf);
2280 if (retval)
2281 return retval;
2282
2283 for (new_blk = blk = fs->super->s_first_data_block;
2284 blk < ext2fs_blocks_count(fs->super); blk++) {
2285 if (!ext2fs_test_block_bitmap2(bmap, blk))
2286 continue;
2287
2288 if (ext2fs_is_meta_block(fs, blk)) {
2289 /*
2290 * If the block is mapping a fs meta data block
2291 * like group desc/block bitmap/inode bitmap. We
2292 * should find a block in the same group and fix
2293 * the respective fs metadata pointers. Otherwise
2294 * fail
2295 */
2296 group = ext2fs_group_of_blk2(fs, blk);
2297 goal = ext2fs_group_first_block2(fs, group);
2298 meta_data = 1;
2299
2300 } else {
2301 goal = new_blk;
2302 }
2303 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2304 if (retval)
2305 goto err_out;
2306
2307 /* new fs meta data block should be in the same group */
2308 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2309 retval = ENOSPC;
2310 goto err_out;
2311 }
2312
2313 /* Mark this block as allocated */
2314 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2315
2316 /* Add it to block move list */
2317 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2318 if (retval)
2319 goto err_out;
2320
2321 bmv->old_loc = blk;
2322 bmv->new_loc = new_blk;
2323
2324 list_add(&(bmv->list), &blk_move_list);
2325
2326 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2327 if (retval)
2328 goto err_out;
2329
2330 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2331 if (retval)
2332 goto err_out;
2333 }
2334
2335 err_out:
2336 ext2fs_free_mem(&buf);
2337 return retval;
2338 }
2339
2340 static blk64_t translate_block(blk64_t blk)
2341 {
2342 struct list_head *entry;
2343 struct blk_move *bmv;
2344
2345 list_for_each(entry, &blk_move_list) {
2346 bmv = list_entry(entry, struct blk_move, list);
2347 if (bmv->old_loc == blk)
2348 return bmv->new_loc;
2349 }
2350
2351 return 0;
2352 }
2353
2354 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2355 blk64_t *block_nr,
2356 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2357 blk64_t ref_block EXT2FS_ATTR((unused)),
2358 int ref_offset EXT2FS_ATTR((unused)),
2359 void *priv_data)
2360 {
2361 int ret = 0;
2362 blk64_t new_blk;
2363 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2364
2365 if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2366 return 0;
2367 new_blk = translate_block(*block_nr);
2368 if (new_blk) {
2369 *block_nr = new_blk;
2370 /*
2371 * This will force the ext2fs_write_inode in the iterator
2372 */
2373 ret |= BLOCK_CHANGED;
2374 }
2375
2376 return ret;
2377 }
2378
2379 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2380 {
2381 errcode_t retval = 0;
2382 ext2_ino_t ino;
2383 blk64_t blk;
2384 char *block_buf = 0;
2385 struct ext2_inode inode;
2386 ext2_inode_scan scan = NULL;
2387
2388 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2389 if (retval)
2390 return retval;
2391
2392 retval = ext2fs_open_inode_scan(fs, 0, &scan);
2393 if (retval)
2394 goto err_out;
2395
2396 while (1) {
2397 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2398 if (retval)
2399 goto err_out;
2400
2401 if (!ino)
2402 break;
2403
2404 if (inode.i_links_count == 0)
2405 continue; /* inode not in use */
2406
2407 /* FIXME!!
2408 * If we end up modifying the journal inode
2409 * the sb->s_jnl_blocks will differ. But a
2410 * subsequent e2fsck fixes that.
2411 * Do we need to fix this ??
2412 */
2413
2414 if (ext2fs_file_acl_block(fs, &inode) &&
2415 ext2fs_test_block_bitmap2(bmap,
2416 ext2fs_file_acl_block(fs, &inode))) {
2417 blk = translate_block(ext2fs_file_acl_block(fs,
2418 &inode));
2419 if (!blk)
2420 continue;
2421
2422 ext2fs_file_acl_block_set(fs, &inode, blk);
2423
2424 /*
2425 * Write the inode to disk so that inode table
2426 * resizing can work
2427 */
2428 retval = ext2fs_write_inode(fs, ino, &inode);
2429 if (retval)
2430 goto err_out;
2431 }
2432
2433 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2434 continue;
2435
2436 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2437 process_block, bmap);
2438 if (retval)
2439 goto err_out;
2440
2441 }
2442
2443 err_out:
2444 ext2fs_free_mem(&block_buf);
2445 ext2fs_close_inode_scan(scan);
2446
2447 return retval;
2448 }
2449
2450 /*
2451 * We need to scan for inode and block bitmaps that may need to be
2452 * moved. This can take place if the filesystem was formatted for
2453 * RAID arrays using the mke2fs's extended option "stride".
2454 */
2455 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2456 {
2457 dgrp_t i;
2458 blk64_t blk, new_blk;
2459
2460 for (i = 0; i < fs->group_desc_count; i++) {
2461 blk = ext2fs_block_bitmap_loc(fs, i);
2462 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2463 new_blk = translate_block(blk);
2464 if (!new_blk)
2465 continue;
2466 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2467 }
2468
2469 blk = ext2fs_inode_bitmap_loc(fs, i);
2470 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2471 new_blk = translate_block(blk);
2472 if (!new_blk)
2473 continue;
2474 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2475 }
2476 }
2477 return 0;
2478 }
2479
2480 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2481 {
2482 dgrp_t i;
2483 blk64_t blk;
2484 errcode_t retval;
2485 int new_ino_blks_per_grp;
2486 unsigned int j;
2487 char *old_itable = NULL, *new_itable = NULL;
2488 char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2489 unsigned long old_ino_size;
2490 int old_itable_size, new_itable_size;
2491
2492 old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2493 old_ino_size = EXT2_INODE_SIZE(fs->super);
2494
2495 new_ino_blks_per_grp = ext2fs_div_ceil(
2496 EXT2_INODES_PER_GROUP(fs->super) *
2497 new_ino_size,
2498 fs->blocksize);
2499
2500 new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2501
2502 retval = ext2fs_get_mem(old_itable_size, &old_itable);
2503 if (retval)
2504 return retval;
2505
2506 retval = ext2fs_get_mem(new_itable_size, &new_itable);
2507 if (retval)
2508 goto err_out;
2509
2510 tmp_old_itable = old_itable;
2511 tmp_new_itable = new_itable;
2512
2513 for (i = 0; i < fs->group_desc_count; i++) {
2514 blk = ext2fs_inode_table_loc(fs, i);
2515 retval = io_channel_read_blk64(fs->io, blk,
2516 fs->inode_blocks_per_group, old_itable);
2517 if (retval)
2518 goto err_out;
2519
2520 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2521 memcpy(new_itable, old_itable, old_ino_size);
2522
2523 memset(new_itable+old_ino_size, 0,
2524 new_ino_size - old_ino_size);
2525
2526 new_itable += new_ino_size;
2527 old_itable += old_ino_size;
2528 }
2529
2530 /* reset the pointer */
2531 old_itable = tmp_old_itable;
2532 new_itable = tmp_new_itable;
2533
2534 retval = io_channel_write_blk64(fs->io, blk,
2535 new_ino_blks_per_grp, new_itable);
2536 if (retval)
2537 goto err_out;
2538 }
2539
2540 /* Update the meta data */
2541 fs->inode_blocks_per_group = new_ino_blks_per_grp;
2542 ext2fs_free_inode_cache(fs->icache);
2543 fs->icache = 0;
2544 fs->super->s_inode_size = new_ino_size;
2545
2546 err_out:
2547 if (old_itable)
2548 ext2fs_free_mem(&old_itable);
2549
2550 if (new_itable)
2551 ext2fs_free_mem(&new_itable);
2552
2553 return retval;
2554 }
2555
2556 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
2557 {
2558 blk64_t blk;
2559 ext2_ino_t ino;
2560 unsigned int group = 0;
2561 unsigned int count = 0;
2562 int total_free = 0;
2563 int group_free = 0;
2564
2565 /*
2566 * First calculate the block statistics
2567 */
2568 for (blk = fs->super->s_first_data_block;
2569 blk < ext2fs_blocks_count(fs->super); blk++) {
2570 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
2571 group_free++;
2572 total_free++;
2573 }
2574 count++;
2575 if ((count == fs->super->s_blocks_per_group) ||
2576 (blk == ext2fs_blocks_count(fs->super)-1)) {
2577 ext2fs_bg_free_blocks_count_set(fs, group++,
2578 group_free);
2579 count = 0;
2580 group_free = 0;
2581 }
2582 }
2583 total_free = EXT2FS_C2B(fs, total_free);
2584 ext2fs_free_blocks_count_set(fs->super, total_free);
2585
2586 /*
2587 * Next, calculate the inode statistics
2588 */
2589 group_free = 0;
2590 total_free = 0;
2591 count = 0;
2592 group = 0;
2593
2594 /* Protect loop from wrap-around if s_inodes_count maxed */
2595 for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
2596 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
2597 group_free++;
2598 total_free++;
2599 }
2600 count++;
2601 if ((count == fs->super->s_inodes_per_group) ||
2602 (ino == fs->super->s_inodes_count)) {
2603 ext2fs_bg_free_inodes_count_set(fs, group++,
2604 group_free);
2605 count = 0;
2606 group_free = 0;
2607 }
2608 }
2609 fs->super->s_free_inodes_count = total_free;
2610 ext2fs_mark_super_dirty(fs);
2611 return 0;
2612 }
2613
2614 #define list_for_each_safe(pos, pnext, head) \
2615 for (pos = (head)->next, pnext = pos->next; pos != (head); \
2616 pos = pnext, pnext = pos->next)
2617
2618 static void free_blk_move_list(void)
2619 {
2620 struct list_head *entry, *tmp;
2621 struct blk_move *bmv;
2622
2623 list_for_each_safe(entry, tmp, &blk_move_list) {
2624 bmv = list_entry(entry, struct blk_move, list);
2625 list_del(entry);
2626 ext2fs_free_mem(&bmv);
2627 }
2628 return;
2629 }
2630
2631 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2632 {
2633 errcode_t retval;
2634 int new_ino_blks_per_grp;
2635 ext2fs_block_bitmap bmap;
2636
2637 retval = ext2fs_read_inode_bitmap(fs);
2638 if (retval) {
2639 fputs(_("Failed to read inode bitmap\n"), stderr);
2640 return retval;
2641 }
2642 retval = ext2fs_read_block_bitmap(fs);
2643 if (retval) {
2644 fputs(_("Failed to read block bitmap\n"), stderr);
2645 return retval;
2646 }
2647 INIT_LIST_HEAD(&blk_move_list);
2648
2649
2650 new_ino_blks_per_grp = ext2fs_div_ceil(
2651 EXT2_INODES_PER_GROUP(fs->super)*
2652 new_size,
2653 fs->blocksize);
2654
2655 /* We may change the file system.
2656 * Mark the file system as invalid so that
2657 * the user is prompted to run fsck.
2658 */
2659 fs->super->s_state &= ~EXT2_VALID_FS;
2660
2661 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2662 &bmap);
2663 if (retval) {
2664 fputs(_("Failed to allocate block bitmap when "
2665 "increasing inode size\n"), stderr);
2666 return retval;
2667 }
2668 retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2669 if (retval) {
2670 fputs(_("Not enough space to increase inode size \n"), stderr);
2671 goto err_out;
2672 }
2673 retval = move_block(fs, bmap);
2674 if (retval) {
2675 fputs(_("Failed to relocate blocks during inode resize \n"),
2676 stderr);
2677 goto err_out;
2678 }
2679 retval = inode_scan_and_fix(fs, bmap);
2680 if (retval)
2681 goto err_out_undo;
2682
2683 retval = group_desc_scan_and_fix(fs, bmap);
2684 if (retval)
2685 goto err_out_undo;
2686
2687 retval = expand_inode_table(fs, new_size);
2688 if (retval)
2689 goto err_out_undo;
2690
2691 ext2fs_calculate_summary_stats(fs);
2692
2693 fs->super->s_state |= EXT2_VALID_FS;
2694 /* mark super block and block bitmap as dirty */
2695 ext2fs_mark_super_dirty(fs);
2696 ext2fs_mark_bb_dirty(fs);
2697
2698 err_out:
2699 free_blk_move_list();
2700 ext2fs_free_block_bitmap(bmap);
2701
2702 return retval;
2703
2704 err_out_undo:
2705 free_blk_move_list();
2706 ext2fs_free_block_bitmap(bmap);
2707 fputs(_("Error in resizing the inode size.\n"
2708 "Run e2undo to undo the "
2709 "file system changes. \n"), stderr);
2710
2711 return retval;
2712 }
2713
2714 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2715 {
2716 errcode_t retval = 0;
2717 const char *tdb_dir;
2718 char *tdb_file = NULL;
2719 char *dev_name, *tmp_name;
2720
2721 /* (re)open a specific undo file */
2722 if (undo_file && undo_file[0] != 0) {
2723 retval = set_undo_io_backing_manager(*io_ptr);
2724 if (retval)
2725 goto err;
2726 *io_ptr = undo_io_manager;
2727 retval = set_undo_io_backup_file(undo_file);
2728 if (retval)
2729 goto err;
2730 printf(_("Overwriting existing filesystem; this can be undone "
2731 "using the command:\n"
2732 " e2undo %s %s\n\n"),
2733 undo_file, name);
2734 return retval;
2735 }
2736
2737 /*
2738 * Configuration via a conf file would be
2739 * nice
2740 */
2741 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2742 if (!tdb_dir)
2743 tdb_dir = "/var/lib/e2fsprogs";
2744
2745 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2746 access(tdb_dir, W_OK))
2747 return 0;
2748
2749 tmp_name = strdup(name);
2750 if (!tmp_name)
2751 goto errout;
2752 dev_name = basename(tmp_name);
2753 tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2754 if (!tdb_file) {
2755 free(tmp_name);
2756 goto errout;
2757 }
2758 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2759 free(tmp_name);
2760
2761 if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2762 retval = errno;
2763 com_err(program_name, retval,
2764 _("while trying to delete %s"), tdb_file);
2765 goto errout;
2766 }
2767
2768 retval = set_undo_io_backing_manager(*io_ptr);
2769 if (retval)
2770 goto errout;
2771 *io_ptr = undo_io_manager;
2772 retval = set_undo_io_backup_file(tdb_file);
2773 if (retval)
2774 goto errout;
2775 printf(_("Overwriting existing filesystem; this can be undone "
2776 "using the command:\n"
2777 " e2undo %s %s\n\n"),
2778 tdb_file, name);
2779
2780 free(tdb_file);
2781 return 0;
2782 errout:
2783 free(tdb_file);
2784 err:
2785 com_err("tune2fs", retval, "while trying to setup undo file\n");
2786 return retval;
2787 }
2788
2789 static int
2790 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2791 {
2792 int retval, nr_users, start;
2793 journal_superblock_t *jsb;
2794 ext2_filsys jfs;
2795 __u8 *j_uuid;
2796 char *journal_path;
2797 char uuid[UUID_STR_SIZE];
2798 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2799
2800 if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
2801 return 0;
2802
2803 uuid_unparse(sb->s_journal_uuid, uuid);
2804 journal_path = blkid_get_devname(NULL, "UUID", uuid);
2805 if (!journal_path)
2806 return 0;
2807
2808 retval = ext2fs_open2(journal_path, io_options,
2809 EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2810 0, 0, unix_io_manager, &jfs);
2811 if (retval) {
2812 com_err(program_name, retval,
2813 _("while trying to open %s"),
2814 journal_path);
2815 return retval;
2816 }
2817
2818 retval = get_journal_sb(jfs, buf);
2819 if (retval != 0) {
2820 if (retval == EXT2_ET_UNSUPP_FEATURE)
2821 fprintf(stderr, _("%s is not a journal device.\n"),
2822 journal_path);
2823 return retval;
2824 }
2825
2826 jsb = (journal_superblock_t *) buf;
2827 /* Find the filesystem UUID */
2828 nr_users = ntohl(jsb->s_nr_users);
2829 if (nr_users > JFS_USERS_MAX) {
2830 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
2831 "is too high (%d).\n"), nr_users);
2832 return EXT2_ET_CORRUPT_JOURNAL_SB;
2833 }
2834
2835 j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2836 if (j_uuid == NULL) {
2837 fputs(_("Filesystem's UUID not found on journal device.\n"),
2838 stderr);
2839 return EXT2_ET_LOAD_EXT_JOURNAL;
2840 }
2841
2842 memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2843
2844 start = ext2fs_journal_sb_start(jfs->blocksize);
2845 /* Write back the journal superblock */
2846 retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2847 if (retval != 0) {
2848 com_err(program_name, retval,
2849 "while writing journal superblock.");
2850 return retval;
2851 }
2852
2853 ext2fs_close(jfs);
2854
2855 return 0;
2856 }
2857
2858 #ifndef BUILD_AS_LIB
2859 int main(int argc, char **argv)
2860 #else
2861 int tune2fs_main(int argc, char **argv)
2862 #endif /* BUILD_AS_LIB */
2863 {
2864 errcode_t retval;
2865 ext2_filsys fs;
2866 struct ext2_super_block *sb;
2867 io_manager io_ptr, io_ptr_orig = NULL;
2868 int rc = 0;
2869 char default_undo_file[1] = { 0 };
2870
2871 #ifdef ENABLE_NLS
2872 setlocale(LC_MESSAGES, "");
2873 setlocale(LC_CTYPE, "");
2874 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2875 textdomain(NLS_CAT_NAME);
2876 set_com_err_gettext(gettext);
2877 #endif
2878 if (argc && *argv)
2879 program_name = *argv;
2880 add_error_table(&et_ext2_error_table);
2881
2882 #ifdef CONFIG_BUILD_FINDFS
2883 if (strcmp(get_progname(argv[0]), "findfs") == 0)
2884 do_findfs(argc, argv);
2885 #endif
2886 if (strcmp(get_progname(argv[0]), "e2label") == 0)
2887 parse_e2label_options(argc, argv);
2888 else
2889 parse_tune2fs_options(argc, argv);
2890
2891 #ifdef CONFIG_TESTIO_DEBUG
2892 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2893 io_ptr = test_io_manager;
2894 test_io_backing_manager = unix_io_manager;
2895 } else
2896 #endif
2897 io_ptr = unix_io_manager;
2898
2899 retry_open:
2900 if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2901 open_flag |= EXT2_FLAG_SKIP_MMP;
2902
2903 open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_JOURNAL_DEV_OK;
2904
2905 /* keep the filesystem struct around to dump MMP data */
2906 open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2907
2908 retval = ext2fs_open2(device_name, io_options, open_flag,
2909 0, 0, io_ptr, &fs);
2910 if (retval) {
2911 com_err(program_name, retval,
2912 _("while trying to open %s"),
2913 device_name);
2914 if (retval == EXT2_ET_MMP_FSCK_ON ||
2915 retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2916 dump_mmp_msg(fs->mmp_buf,
2917 _("If you are sure the filesystem "
2918 "is not in use on any node, run:\n"
2919 "'tune2fs -f -E clear_mmp {device}'\n"));
2920 else if (retval == EXT2_ET_MMP_FAILED)
2921 dump_mmp_msg(fs->mmp_buf, NULL);
2922 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2923 fprintf(stderr,
2924 _("MMP block magic is bad. Try to fix it by "
2925 "running:\n'e2fsck -f %s'\n"), device_name);
2926 else if (retval == EXT2_ET_BAD_MAGIC)
2927 check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2928 else if (retval != EXT2_ET_MMP_FAILED)
2929 fprintf(stderr, "%s",
2930 _("Couldn't find valid filesystem superblock.\n"));
2931
2932 ext2fs_free(fs);
2933 exit(1);
2934 }
2935 if (ext2fs_has_feature_journal_dev(fs->super)) {
2936 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
2937 ext2fs_free(fs);
2938 exit(1);
2939 }
2940 fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
2941
2942 if (I_flag) {
2943 /*
2944 * Check the inode size is right so we can issue an
2945 * error message and bail before setting up the tdb
2946 * file.
2947 */
2948 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
2949 fprintf(stderr, _("The inode size is already %lu\n"),
2950 new_inode_size);
2951 rc = 1;
2952 goto closefs;
2953 }
2954 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
2955 fprintf(stderr, "%s",
2956 _("Shrinking inode size is not supported\n"));
2957 rc = 1;
2958 goto closefs;
2959 }
2960 if (new_inode_size > fs->blocksize) {
2961 fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
2962 new_inode_size, fs->blocksize);
2963 rc = 1;
2964 goto closefs;
2965 }
2966 rc = check_fsck_needed(fs,
2967 _("Resizing inodes could take some time."));
2968 if (rc)
2969 goto closefs;
2970 /*
2971 * If inode resize is requested use the
2972 * Undo I/O manager
2973 */
2974 undo_file = default_undo_file;
2975 }
2976
2977 /* Set up an undo file */
2978 if (undo_file && io_ptr_orig == NULL) {
2979 io_ptr_orig = io_ptr;
2980 retval = tune2fs_setup_tdb(device_name, &io_ptr);
2981 if (retval) {
2982 rc = 1;
2983 goto closefs;
2984 }
2985 if (io_ptr != io_ptr_orig) {
2986 ext2fs_close_free(&fs);
2987 goto retry_open;
2988 }
2989 }
2990
2991 sb = fs->super;
2992 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2993
2994 if (print_label) {
2995 /* For e2label emulation */
2996 printf("%.*s\n", EXT2_LEN_STR(sb->s_volume_name));
2997 remove_error_table(&et_ext2_error_table);
2998 goto closefs;
2999 }
3000
3001 retval = ext2fs_check_if_mounted(device_name, &mount_flags);
3002 if (retval) {
3003 com_err("ext2fs_check_if_mount", retval,
3004 _("while determining whether %s is mounted."),
3005 device_name);
3006 rc = 1;
3007 goto closefs;
3008 }
3009
3010 #ifdef NO_RECOVERY
3011 /* Warn if file system needs recovery and it is opened for writing. */
3012 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3013 (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
3014 (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
3015 fprintf(stderr,
3016 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
3017 "\te2fsck -E journal_only %s\n\n"
3018 "then rerun this command. Otherwise, any changes made may be overwritten\n"
3019 "by journal recovery.\n"), device_name);
3020 }
3021 #else
3022 /* Recover the journal if possible. */
3023 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & (EXT2_MF_BUSY | EXT2_MF_MOUNTED)) &&
3024 ext2fs_has_feature_journal_needs_recovery(fs->super)) {
3025 printf(_("Recovering journal.\n"));
3026 retval = ext2fs_run_ext3_journal(&fs);
3027 if (retval) {
3028 com_err("tune2fs", retval,
3029 "while recovering journal.\n");
3030 printf(_("Please run e2fsck -fy %s.\n"), argv[1]);
3031 if (fs)
3032 ext2fs_close_free(&fs);
3033 rc = 1;
3034 goto closefs;
3035 }
3036 sb = fs->super;
3037 }
3038 #endif
3039
3040 /* Normally we only need to write out the superblock */
3041 fs->flags |= EXT2_FLAG_SUPER_ONLY;
3042
3043 if (c_flag) {
3044 sb->s_max_mnt_count = max_mount_count;
3045 ext2fs_mark_super_dirty(fs);
3046 printf(_("Setting maximal mount count to %d\n"),
3047 max_mount_count);
3048 }
3049 if (C_flag) {
3050 sb->s_mnt_count = mount_count;
3051 ext2fs_mark_super_dirty(fs);
3052 printf(_("Setting current mount count to %d\n"), mount_count);
3053 }
3054 if (e_flag) {
3055 sb->s_errors = errors;
3056 ext2fs_mark_super_dirty(fs);
3057 printf(_("Setting error behavior to %d\n"), errors);
3058 }
3059 if (g_flag) {
3060 sb->s_def_resgid = resgid;
3061 ext2fs_mark_super_dirty(fs);
3062 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
3063 }
3064 if (i_flag) {
3065 if ((unsigned long long)interval >= (1ULL << 32)) {
3066 com_err(program_name, 0,
3067 _("interval between checks is too big (%lu)"),
3068 interval);
3069 rc = 1;
3070 goto closefs;
3071 }
3072 sb->s_checkinterval = interval;
3073 ext2fs_mark_super_dirty(fs);
3074 printf(_("Setting interval between checks to %lu seconds\n"),
3075 interval);
3076 }
3077 if (m_flag) {
3078 ext2fs_r_blocks_count_set(sb, reserved_ratio *
3079 ext2fs_blocks_count(sb) / 100.0);
3080 ext2fs_mark_super_dirty(fs);
3081 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
3082 reserved_ratio, ext2fs_r_blocks_count(sb));
3083 }
3084 if (r_flag) {
3085 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
3086 com_err(program_name, 0,
3087 _("reserved blocks count is too big (%llu)"),
3088 reserved_blocks);
3089 rc = 1;
3090 goto closefs;
3091 }
3092 ext2fs_r_blocks_count_set(sb, reserved_blocks);
3093 ext2fs_mark_super_dirty(fs);
3094 printf(_("Setting reserved blocks count to %llu\n"),
3095 reserved_blocks);
3096 }
3097 if (s_flag == 1) {
3098 if (ext2fs_has_feature_sparse_super(sb)) {
3099 fputs(_("\nThe filesystem already has sparse "
3100 "superblocks.\n"), stderr);
3101 } else if (ext2fs_has_feature_meta_bg(sb)) {
3102 fputs(_("\nSetting the sparse superblock flag not "
3103 "supported\nfor filesystems with "
3104 "the meta_bg feature enabled.\n"),
3105 stderr);
3106 rc = 1;
3107 goto closefs;
3108 } else {
3109 ext2fs_set_feature_sparse_super(sb);
3110 sb->s_state &= ~EXT2_VALID_FS;
3111 ext2fs_mark_super_dirty(fs);
3112 printf(_("\nSparse superblock flag set. %s"),
3113 _(please_fsck));
3114 }
3115 }
3116 if (s_flag == 0) {
3117 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
3118 stderr);
3119 rc = 1;
3120 goto closefs;
3121 }
3122 if (T_flag) {
3123 sb->s_lastcheck = last_check_time;
3124 ext2fs_mark_super_dirty(fs);
3125 printf(_("Setting time filesystem last checked to %s\n"),
3126 ctime(&last_check_time));
3127 }
3128 if (u_flag) {
3129 sb->s_def_resuid = resuid;
3130 ext2fs_mark_super_dirty(fs);
3131 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
3132 }
3133 if (L_flag) {
3134 if (strlen(new_label) > sizeof(sb->s_volume_name))
3135 fputs(_("Warning: label too long, truncating.\n"),
3136 stderr);
3137 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
3138 strncpy((char *)sb->s_volume_name, new_label,
3139 sizeof(sb->s_volume_name));
3140 ext2fs_mark_super_dirty(fs);
3141 }
3142 if (M_flag) {
3143 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
3144 strncpy((char *)sb->s_last_mounted, new_last_mounted,
3145 sizeof(sb->s_last_mounted));
3146 ext2fs_mark_super_dirty(fs);
3147 }
3148 if (mntopts_cmd) {
3149 rc = update_mntopts(fs, mntopts_cmd);
3150 if (rc)
3151 goto closefs;
3152 }
3153 if (features_cmd) {
3154 rc = update_feature_set(fs, features_cmd);
3155 if (rc)
3156 goto closefs;
3157 }
3158 if (extended_cmd) {
3159 rc = parse_extended_opts(fs, extended_cmd);
3160 if (rc)
3161 goto closefs;
3162 if (clear_mmp && !f_flag) {
3163 fputs(_("Error in using clear_mmp. "
3164 "It must be used with -f\n"),
3165 stderr);
3166 goto closefs;
3167 }
3168 }
3169 if (clear_mmp) {
3170 rc = ext2fs_mmp_clear(fs);
3171 goto closefs;
3172 }
3173 if (journal_size || journal_device) {
3174 rc = add_journal(fs);
3175 if (rc)
3176 goto closefs;
3177 }
3178
3179 if (Q_flag) {
3180 if (mount_flags & EXT2_MF_MOUNTED) {
3181 fputs(_("The quota feature may only be changed when "
3182 "the filesystem is unmounted.\n"), stderr);
3183 rc = 1;
3184 goto closefs;
3185 }
3186 rc = handle_quota_options(fs);
3187 if (rc)
3188 goto closefs;
3189 }
3190
3191 if (U_flag) {
3192 int set_csum = 0;
3193 dgrp_t i;
3194 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3195 __u8 old_uuid[UUID_SIZE];
3196
3197 if (!ext2fs_has_feature_csum_seed(fs->super) &&
3198 (ext2fs_has_feature_metadata_csum(fs->super) ||
3199 ext2fs_has_feature_ea_inode(fs->super))) {
3200 rc = check_fsck_needed(fs,
3201 _("Setting the UUID on this "
3202 "filesystem could take some time."));
3203 if (rc)
3204 goto closefs;
3205 rewrite_checksums = 1;
3206 }
3207
3208 if (ext2fs_has_group_desc_csum(fs)) {
3209 /*
3210 * Changing the UUID on a metadata_csum FS requires
3211 * rewriting all metadata, which can race with a
3212 * mounted fs. Don't allow that unless we're saving
3213 * the checksum seed.
3214 */
3215 if ((mount_flags & EXT2_MF_MOUNTED) &&
3216 !ext2fs_has_feature_csum_seed(fs->super) &&
3217 ext2fs_has_feature_metadata_csum(fs->super)) {
3218 fputs(_("The UUID may only be "
3219 "changed when the filesystem is "
3220 "unmounted.\n"), stderr);
3221 fputs(_("If you only use kernels newer than "
3222 "v4.4, run 'tune2fs -O "
3223 "metadata_csum_seed' and re-run this "
3224 "command.\n"), stderr);
3225 try_confirm_csum_seed_support();
3226 rc = 1;
3227 goto closefs;
3228 }
3229
3230 /*
3231 * Determine if the block group checksums are
3232 * correct so we know whether or not to set
3233 * them later on.
3234 */
3235 for (i = 0; i < fs->group_desc_count; i++)
3236 if (!ext2fs_group_desc_csum_verify(fs, i))
3237 break;
3238 if (i >= fs->group_desc_count)
3239 set_csum = 1;
3240 }
3241
3242 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
3243 if ((strcasecmp(new_UUID, "null") == 0) ||
3244 (strcasecmp(new_UUID, "clear") == 0)) {
3245 uuid_clear(sb->s_uuid);
3246 } else if (strcasecmp(new_UUID, "time") == 0) {
3247 uuid_generate_time(sb->s_uuid);
3248 } else if (strcasecmp(new_UUID, "random") == 0) {
3249 uuid_generate(sb->s_uuid);
3250 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
3251 com_err(program_name, 0, "%s",
3252 _("Invalid UUID format\n"));
3253 rc = 1;
3254 goto closefs;
3255 }
3256 ext2fs_init_csum_seed(fs);
3257 if (set_csum) {
3258 for (i = 0; i < fs->group_desc_count; i++)
3259 ext2fs_group_desc_csum_set(fs, i);
3260 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3261 }
3262
3263 /* If this is a journal dev, we need to copy UUID into jsb */
3264 if (!(rc = get_journal_sb(fs, buf))) {
3265 journal_superblock_t *jsb;
3266
3267 jsb = (journal_superblock_t *) buf;
3268 fputs(_("Need to update journal superblock.\n"), stdout);
3269 memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3270
3271 /* Writeback the journal superblock */
3272 if ((rc = io_channel_write_blk64(fs->io,
3273 ext2fs_journal_sb_start(fs->blocksize),
3274 -SUPERBLOCK_SIZE, buf)))
3275 goto closefs;
3276 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3277 goto closefs;
3278 else {
3279 rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3280
3281 if ((rc = fs_update_journal_user(sb, old_uuid)))
3282 goto closefs;
3283 }
3284
3285 ext2fs_mark_super_dirty(fs);
3286 }
3287
3288 if (I_flag) {
3289 if (mount_flags & EXT2_MF_MOUNTED) {
3290 fputs(_("The inode size may only be "
3291 "changed when the filesystem is "
3292 "unmounted.\n"), stderr);
3293 rc = 1;
3294 goto closefs;
3295 }
3296 if (ext2fs_has_feature_flex_bg(fs->super)) {
3297 fputs(_("Changing the inode size not supported for "
3298 "filesystems with the flex_bg\n"
3299 "feature enabled.\n"),
3300 stderr);
3301 rc = 1;
3302 goto closefs;
3303 }
3304 /*
3305 * We want to update group descriptor also
3306 * with the new free inode count
3307 */
3308 if (rewrite_checksums)
3309 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3310 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3311 retval = resize_inode(fs, new_inode_size);
3312 if (rewrite_checksums)
3313 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3314 if (retval == 0) {
3315 printf(_("Setting inode size %lu\n"),
3316 new_inode_size);
3317 rewrite_checksums = 1;
3318 } else {
3319 printf("%s", _("Failed to change inode size\n"));
3320 rc = 1;
3321 goto closefs;
3322 }
3323 }
3324
3325 if (rewrite_checksums)
3326 rewrite_metadata_checksums(fs);
3327
3328 if (l_flag)
3329 list_super(sb);
3330 if (stride_set) {
3331 sb->s_raid_stride = stride;
3332 ext2fs_mark_super_dirty(fs);
3333 printf(_("Setting stride size to %d\n"), stride);
3334 }
3335 if (stripe_width_set) {
3336 sb->s_raid_stripe_width = stripe_width;
3337 ext2fs_mark_super_dirty(fs);
3338 printf(_("Setting stripe width to %d\n"), stripe_width);
3339 }
3340 if (ext_mount_opts) {
3341 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3342 sizeof(fs->super->s_mount_opts));
3343 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3344 ext2fs_mark_super_dirty(fs);
3345 printf(_("Setting extended default mount options to '%s'\n"),
3346 ext_mount_opts);
3347 free(ext_mount_opts);
3348 }
3349
3350 free(device_name);
3351 remove_error_table(&et_ext2_error_table);
3352
3353 closefs:
3354 if (rc) {
3355 ext2fs_mmp_stop(fs);
3356 #ifndef BUILD_AS_LIB
3357 exit(1);
3358 #endif
3359 }
3360
3361 if (feature_64bit)
3362 convert_64bit(fs, feature_64bit);
3363 return (ext2fs_close_free(&fs) ? 1 : 0);
3364 }
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