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