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