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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 #endif
48 #include <string.h>
49 #include <time.h>
50 #include <unistd.h>
51 #include <sys/types.h>
52 #include <libgen.h>
53 #include <limits.h>
54
55 #include "ext2fs/ext2_fs.h"
56 #include "ext2fs/ext2fs.h"
57 #include "ext2fs/kernel-jbd.h"
58 #include "et/com_err.h"
59 #include "uuid/uuid.h"
60 #include "e2p/e2p.h"
61 #include "util.h"
62 #include "plausible.h"
63 #include "blkid/blkid.h"
64 #include "quota/quotaio.h"
65
66 #include "../version.h"
67 #include "nls-enable.h"
68
69 #define QOPT_ENABLE (1)
70 #define QOPT_DISABLE (-1)
71
72 extern int ask_yn(const char *string, int def);
73
74 const char *program_name = "tune2fs";
75 char *device_name;
76 char *new_label, *new_last_mounted, *new_UUID;
77 char *io_options;
78 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
79 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
80 static int I_flag;
81 static int clear_mmp;
82 static time_t last_check_time;
83 static int print_label;
84 static int max_mount_count, mount_count, mount_flags;
85 static unsigned long interval;
86 static blk64_t reserved_blocks;
87 static double reserved_ratio;
88 static unsigned long resgid, resuid;
89 static unsigned short errors;
90 static int open_flag;
91 static char *features_cmd;
92 static char *mntopts_cmd;
93 static int stride, stripe_width;
94 static int stride_set, stripe_width_set;
95 static char *extended_cmd;
96 static unsigned long new_inode_size;
97 static char *ext_mount_opts;
98 static int usrquota, grpquota;
99 static int rewrite_checksums;
100 static int feature_64bit;
101 static int fsck_requested;
102 static char *undo_file;
103
104 int journal_size, journal_flags;
105 char *journal_device;
106 static blk64_t journal_location = ~0LL;
107
108 static struct list_head blk_move_list;
109
110 struct blk_move {
111 struct list_head list;
112 blk64_t old_loc;
113 blk64_t new_loc;
114 };
115
116
117 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
118 static const char *please_dir_fsck =
119 N_("Please run e2fsck -D on the filesystem.\n");
120
121 #ifdef CONFIG_BUILD_FINDFS
122 void do_findfs(int argc, char **argv);
123 #endif
124
125 static void usage(void)
126 {
127 fprintf(stderr,
128 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
129 "[-g group]\n"
130 "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
131 "\t[-m reserved_blocks_percent] "
132 "[-o [^]mount_options[,...]] [-p mmp_update_interval]\n"
133 "\t[-r reserved_blocks_count] [-u user] [-C mount_count] "
134 "[-L volume_label]\n"
135 "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
136 #ifdef CONFIG_QUOTA
137 "\t[-Q quota_options]\n"
138 #endif
139 "\t[-E extended-option[,...]] [-T last_check_time] "
140 "[-U UUID]\n\t[-I new_inode_size] [-z undo_file] device\n"),
141 program_name);
142 exit(1);
143 }
144
145 static __u32 ok_features[3] = {
146 /* Compat */
147 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
148 EXT2_FEATURE_COMPAT_DIR_INDEX,
149 /* Incompat */
150 EXT2_FEATURE_INCOMPAT_FILETYPE |
151 EXT3_FEATURE_INCOMPAT_EXTENTS |
152 EXT4_FEATURE_INCOMPAT_FLEX_BG |
153 EXT4_FEATURE_INCOMPAT_MMP |
154 EXT4_FEATURE_INCOMPAT_64BIT |
155 EXT4_FEATURE_INCOMPAT_ENCRYPT,
156 /* R/O compat */
157 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
158 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
159 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
160 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
161 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
162 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
163 #ifdef CONFIG_QUOTA
164 EXT4_FEATURE_RO_COMPAT_QUOTA |
165 #endif
166 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
167 EXT4_FEATURE_RO_COMPAT_READONLY
168 };
169
170 static __u32 clear_ok_features[3] = {
171 /* Compat */
172 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
173 EXT2_FEATURE_COMPAT_RESIZE_INODE |
174 EXT2_FEATURE_COMPAT_DIR_INDEX,
175 /* Incompat */
176 EXT2_FEATURE_INCOMPAT_FILETYPE |
177 EXT4_FEATURE_INCOMPAT_FLEX_BG |
178 EXT4_FEATURE_INCOMPAT_MMP |
179 EXT4_FEATURE_INCOMPAT_64BIT,
180 /* R/O compat */
181 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
182 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
183 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
184 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
185 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
186 #ifdef CONFIG_QUOTA
187 EXT4_FEATURE_RO_COMPAT_QUOTA |
188 #endif
189 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
190 EXT4_FEATURE_RO_COMPAT_READONLY
191 };
192
193 /**
194 * Try to get journal super block if any
195 */
196 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
197 {
198 int retval;
199 journal_superblock_t *jsb;
200
201 if (!(jfs->super->s_feature_incompat &
202 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
203 return EXT2_ET_UNSUPP_FEATURE;
204 }
205
206 /* Get the journal superblock */
207 if ((retval = io_channel_read_blk64(jfs->io,
208 ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
209 com_err(program_name, retval, "%s",
210 _("while reading journal superblock"));
211 return retval;
212 }
213
214 jsb = (journal_superblock_t *) buf;
215 if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
216 (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
217 fputs(_("Journal superblock not found!\n"), stderr);
218 return EXT2_ET_BAD_MAGIC;
219 }
220
221 return 0;
222 }
223
224 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JFS_USERS_SIZE],
225 int nr_users)
226 {
227 int i;
228 for (i = 0; i < nr_users; i++) {
229 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
230 return &s_users[i * UUID_SIZE];
231 }
232
233 return NULL;
234 }
235
236 /*
237 * Remove an external journal from the filesystem
238 */
239 static int remove_journal_device(ext2_filsys fs)
240 {
241 char *journal_path;
242 ext2_filsys jfs;
243 char buf[SUPERBLOCK_SIZE];
244 journal_superblock_t *jsb;
245 int i, nr_users;
246 errcode_t retval;
247 int commit_remove_journal = 0;
248 io_manager io_ptr;
249
250 if (f_flag)
251 commit_remove_journal = 1; /* force removal even if error */
252
253 uuid_unparse(fs->super->s_journal_uuid, buf);
254 journal_path = blkid_get_devname(NULL, "UUID", buf);
255
256 if (!journal_path) {
257 journal_path =
258 ext2fs_find_block_device(fs->super->s_journal_dev);
259 if (!journal_path)
260 goto no_valid_journal;
261 }
262
263 #ifdef CONFIG_TESTIO_DEBUG
264 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
265 io_ptr = test_io_manager;
266 test_io_backing_manager = unix_io_manager;
267 } else
268 #endif
269 io_ptr = unix_io_manager;
270 retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
271 EXT2_FLAG_JOURNAL_DEV_OK, 0,
272 fs->blocksize, io_ptr, &jfs);
273 if (retval) {
274 com_err(program_name, retval, "%s",
275 _("while trying to open external journal"));
276 goto no_valid_journal;
277 }
278
279 if ((retval = get_journal_sb(jfs, buf))) {
280 if (retval == EXT2_ET_UNSUPP_FEATURE)
281 fprintf(stderr, _("%s is not a journal device.\n"),
282 journal_path);
283 goto no_valid_journal;
284 }
285
286 jsb = (journal_superblock_t *) buf;
287 /* Find the filesystem UUID */
288 nr_users = ntohl(jsb->s_nr_users);
289
290 if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
291 fputs(_("Filesystem's UUID not found on journal device.\n"),
292 stderr);
293 commit_remove_journal = 1;
294 goto no_valid_journal;
295 }
296 nr_users--;
297 for (i = 0; i < nr_users; i++)
298 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
299 jsb->s_nr_users = htonl(nr_users);
300
301 /* Write back the journal superblock */
302 retval = io_channel_write_blk64(jfs->io,
303 ext2fs_journal_sb_start(fs->blocksize),
304 -SUPERBLOCK_SIZE, buf);
305 if (retval) {
306 com_err(program_name, retval,
307 "while writing journal superblock.");
308 goto no_valid_journal;
309 }
310
311 commit_remove_journal = 1;
312
313 no_valid_journal:
314 if (commit_remove_journal == 0) {
315 fputs(_("Cannot locate journal device. It was NOT removed\n"
316 "Use -f option to remove missing journal device.\n"),
317 stderr);
318 return 1;
319 }
320 fs->super->s_journal_dev = 0;
321 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
322 uuid_clear(fs->super->s_journal_uuid);
323 ext2fs_mark_super_dirty(fs);
324 fputs(_("Journal removed\n"), stdout);
325 free(journal_path);
326
327 return 0;
328 }
329
330 /* Helper function for remove_journal_inode */
331 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
332 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
333 blk64_t ref_block EXT2FS_ATTR((unused)),
334 int ref_offset EXT2FS_ATTR((unused)),
335 void *private EXT2FS_ATTR((unused)))
336 {
337 blk64_t block;
338 int group;
339
340 block = *blocknr;
341 ext2fs_unmark_block_bitmap2(fs->block_map, block);
342 group = ext2fs_group_of_blk2(fs, block);
343 ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
344 ext2fs_group_desc_csum_set(fs, group);
345 ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
346 return 0;
347 }
348
349 /*
350 * Remove the journal inode from the filesystem
351 */
352 static errcode_t remove_journal_inode(ext2_filsys fs)
353 {
354 struct ext2_inode inode;
355 errcode_t retval;
356 ino_t ino = fs->super->s_journal_inum;
357
358 retval = ext2fs_read_inode(fs, ino, &inode);
359 if (retval) {
360 com_err(program_name, retval, "%s",
361 _("while reading journal inode"));
362 return retval;
363 }
364 if (ino == EXT2_JOURNAL_INO) {
365 retval = ext2fs_read_bitmaps(fs);
366 if (retval) {
367 com_err(program_name, retval, "%s",
368 _("while reading bitmaps"));
369 return retval;
370 }
371 retval = ext2fs_block_iterate3(fs, ino,
372 BLOCK_FLAG_READ_ONLY, NULL,
373 release_blocks_proc, NULL);
374 if (retval) {
375 com_err(program_name, retval, "%s",
376 _("while clearing journal inode"));
377 return retval;
378 }
379 memset(&inode, 0, sizeof(inode));
380 ext2fs_mark_bb_dirty(fs);
381 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
382 } else
383 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
384 retval = ext2fs_write_inode(fs, ino, &inode);
385 if (retval) {
386 com_err(program_name, retval, "%s",
387 _("while writing journal inode"));
388 return retval;
389 }
390 fs->super->s_journal_inum = 0;
391 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
392 ext2fs_mark_super_dirty(fs);
393
394 return 0;
395 }
396
397 /*
398 * Update the default mount options
399 */
400 static int update_mntopts(ext2_filsys fs, char *mntopts)
401 {
402 struct ext2_super_block *sb = fs->super;
403
404 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
405 fprintf(stderr, _("Invalid mount option set: %s\n"),
406 mntopts);
407 return 1;
408 }
409 ext2fs_mark_super_dirty(fs);
410
411 return 0;
412 }
413
414 static int check_fsck_needed(ext2_filsys fs)
415 {
416 if (fs->super->s_state & EXT2_VALID_FS)
417 return 0;
418 printf("\n%s\n", _(please_fsck));
419 if (mount_flags & EXT2_MF_READONLY)
420 printf("%s", _("(and reboot afterwards!)\n"));
421 return 1;
422 }
423
424 static void request_dir_fsck_afterwards(ext2_filsys fs)
425 {
426 static int requested;
427
428 if (requested++)
429 return;
430 fsck_requested++;
431 fs->super->s_state &= ~EXT2_VALID_FS;
432 printf("\n%s\n", _(please_dir_fsck));
433 if (mount_flags & EXT2_MF_READONLY)
434 printf("%s", _("(and reboot afterwards!)\n"));
435 }
436
437 static void request_fsck_afterwards(ext2_filsys fs)
438 {
439 static int requested = 0;
440
441 if (requested++)
442 return;
443 fsck_requested++;
444 fs->super->s_state &= ~EXT2_VALID_FS;
445 printf("\n%s\n", _(please_fsck));
446 if (mount_flags & EXT2_MF_READONLY)
447 printf("%s", _("(and reboot afterwards!)\n"));
448 }
449
450 static void convert_64bit(ext2_filsys fs, int direction)
451 {
452 if (!direction)
453 return;
454
455 /*
456 * Is resize2fs going to demand a fsck run? Might as well tell the
457 * user now.
458 */
459 if (!fsck_requested &&
460 ((fs->super->s_state & EXT2_ERROR_FS) ||
461 !(fs->super->s_state & EXT2_VALID_FS) ||
462 fs->super->s_lastcheck < fs->super->s_mtime))
463 request_fsck_afterwards(fs);
464 if (fsck_requested)
465 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
466 direction > 0 ? "-b" : "-s", fs->device_name);
467 else
468 fprintf(stderr, _("Please run `resize2fs %s %s"),
469 direction > 0 ? "-b" : "-s", fs->device_name);
470
471 if (undo_file)
472 fprintf(stderr, _(" -z \"%s\""), undo_file);
473 if (direction > 0)
474 fprintf(stderr, _("' to enable 64-bit mode.\n"));
475 else
476 fprintf(stderr, _("' to disable 64-bit mode.\n"));
477 }
478
479 /* Rewrite extents */
480 static errcode_t rewrite_extents(ext2_filsys fs, ext2_ino_t ino,
481 struct ext2_inode *inode)
482 {
483 ext2_extent_handle_t handle;
484 struct ext2fs_extent extent;
485 errcode_t errcode;
486 struct ext2_extent_info info;
487
488 if (!(inode->i_flags & EXT4_EXTENTS_FL) ||
489 !EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
490 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
491 return 0;
492
493 errcode = ext2fs_extent_open(fs, ino, &handle);
494 if (errcode)
495 return errcode;
496
497 errcode = ext2fs_extent_get(handle, EXT2_EXTENT_ROOT, &extent);
498 if (errcode)
499 goto out;
500
501 do {
502 errcode = ext2fs_extent_get_info(handle, &info);
503 if (errcode)
504 break;
505
506 /*
507 * If this is the first extent in an extent block that we
508 * haven't visited, rewrite the extent to force the ETB
509 * checksum to be rewritten.
510 */
511 if (info.curr_entry == 1 && info.curr_level != 0 &&
512 !(extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)) {
513 errcode = ext2fs_extent_replace(handle, 0, &extent);
514 if (errcode)
515 break;
516 }
517
518 /* Skip to the end of a block of leaf nodes */
519 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
520 errcode = ext2fs_extent_get(handle,
521 EXT2_EXTENT_LAST_SIB,
522 &extent);
523 if (errcode)
524 break;
525 }
526
527 errcode = ext2fs_extent_get(handle, EXT2_EXTENT_NEXT, &extent);
528 } while (errcode == 0);
529
530 out:
531 /* Ok if we run off the end */
532 if (errcode == EXT2_ET_EXTENT_NO_NEXT)
533 errcode = 0;
534 ext2fs_extent_free(handle);
535 return errcode;
536 }
537
538 /*
539 * Rewrite directory blocks with checksums
540 */
541 struct rewrite_dir_context {
542 char *buf;
543 errcode_t errcode;
544 ext2_ino_t dir;
545 int is_htree;
546 };
547
548 static int rewrite_dir_block(ext2_filsys fs,
549 blk64_t *blocknr,
550 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
551 blk64_t ref_block EXT2FS_ATTR((unused)),
552 int ref_offset EXT2FS_ATTR((unused)),
553 void *priv_data)
554 {
555 struct ext2_dx_countlimit *dcl = NULL;
556 struct rewrite_dir_context *ctx = priv_data;
557 int dcl_offset, changed = 0;
558
559 ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
560 ctx->dir);
561 if (ctx->errcode)
562 return BLOCK_ABORT;
563
564 /* if htree node... */
565 if (ctx->is_htree)
566 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
567 &dcl, &dcl_offset);
568 if (dcl) {
569 if (!EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
570 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
571 /* Ensure limit is the max size */
572 int max_entries = (fs->blocksize - dcl_offset) /
573 sizeof(struct ext2_dx_entry);
574 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
575 changed = 1;
576 dcl->limit = ext2fs_cpu_to_le16(max_entries);
577 }
578 } else {
579 /* If htree block is full then rebuild the dir */
580 if (ext2fs_le16_to_cpu(dcl->count) ==
581 ext2fs_le16_to_cpu(dcl->limit)) {
582 request_dir_fsck_afterwards(fs);
583 return 0;
584 }
585 /*
586 * Ensure dcl->limit is small enough to leave room for
587 * the checksum tail.
588 */
589 int max_entries = (fs->blocksize - (dcl_offset +
590 sizeof(struct ext2_dx_tail))) /
591 sizeof(struct ext2_dx_entry);
592 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
593 dcl->limit = ext2fs_cpu_to_le16(max_entries);
594 /* Always rewrite checksum */
595 changed = 1;
596 }
597 } else {
598 unsigned int rec_len, name_size;
599 char *top = ctx->buf + fs->blocksize;
600 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
601 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
602
603 /* Find last and penultimate dirent */
604 while ((char *)de < top) {
605 penultimate_de = last_de;
606 last_de = de;
607 ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
608 if (!ctx->errcode && !rec_len)
609 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
610 if (ctx->errcode)
611 return BLOCK_ABORT;
612 de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
613 }
614 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
615 if (ctx->errcode)
616 return BLOCK_ABORT;
617 name_size = ext2fs_dirent_name_len(last_de);
618
619 if (!EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
620 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
621 if (!penultimate_de)
622 return 0;
623 if (last_de->inode ||
624 name_size ||
625 rec_len != sizeof(struct ext2_dir_entry_tail))
626 return 0;
627 /*
628 * The last dirent is unused and the right length to
629 * have stored a checksum. Erase it.
630 */
631 ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
632 &rec_len);
633 if (!rec_len)
634 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
635 if (ctx->errcode)
636 return BLOCK_ABORT;
637 ext2fs_set_rec_len(fs, rec_len +
638 sizeof(struct ext2_dir_entry_tail),
639 penultimate_de);
640 changed = 1;
641 } else {
642 unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
643 struct ext2_dir_entry_tail *t;
644
645 /*
646 * If the last dirent looks like the tail, just update
647 * the checksum.
648 */
649 if (!last_de->inode &&
650 rec_len == csum_size) {
651 t = (struct ext2_dir_entry_tail *)last_de;
652 t->det_reserved_name_len =
653 EXT2_DIR_NAME_LEN_CSUM;
654 changed = 1;
655 goto out;
656 }
657 if (name_size & 3)
658 name_size = (name_size & ~3) + 4;
659 /* If there's not enough space for the tail, e2fsck */
660 if (rec_len <= (8 + name_size + csum_size)) {
661 request_dir_fsck_afterwards(fs);
662 return 0;
663 }
664 /* Shorten that last de and insert the tail */
665 ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
666 t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
667 ext2fs_initialize_dirent_tail(fs, t);
668
669 /* Always update checksum */
670 changed = 1;
671 }
672 }
673
674 out:
675 if (!changed)
676 return 0;
677
678 ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
679 0, ctx->dir);
680 if (ctx->errcode)
681 return BLOCK_ABORT;
682
683 return 0;
684 }
685
686 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
687 struct ext2_inode *inode)
688 {
689 errcode_t retval;
690 struct rewrite_dir_context ctx;
691
692 retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
693 if (retval)
694 return retval;
695
696 ctx.is_htree = (inode->i_flags & EXT2_INDEX_FL);
697 ctx.dir = dir;
698 ctx.errcode = 0;
699 retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
700 BLOCK_FLAG_DATA_ONLY,
701 0, rewrite_dir_block, &ctx);
702
703 ext2fs_free_mem(&ctx.buf);
704 if (retval)
705 return retval;
706
707 return ctx.errcode;
708 }
709
710 /*
711 * Forcibly set checksums in all inodes.
712 */
713 static void rewrite_inodes(ext2_filsys fs)
714 {
715 int length = EXT2_INODE_SIZE(fs->super);
716 struct ext2_inode *inode, *zero;
717 char *ea_buf;
718 ext2_inode_scan scan;
719 errcode_t retval;
720 ext2_ino_t ino;
721 blk64_t file_acl_block;
722 int inode_dirty;
723
724 if (fs->super->s_creator_os != EXT2_OS_LINUX)
725 return;
726
727 retval = ext2fs_open_inode_scan(fs, 0, &scan);
728 if (retval) {
729 com_err("set_csum", retval, "while opening inode scan");
730 exit(1);
731 }
732
733 retval = ext2fs_get_mem(length, &inode);
734 if (retval) {
735 com_err("set_csum", retval, "while allocating memory");
736 exit(1);
737 }
738
739 retval = ext2fs_get_memzero(length, &zero);
740 if (retval) {
741 com_err("set_csum", retval, "while allocating memory");
742 exit(1);
743 }
744
745 retval = ext2fs_get_mem(fs->blocksize, &ea_buf);
746 if (retval) {
747 com_err("set_csum", retval, "while allocating memory");
748 exit(1);
749 }
750
751 do {
752 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
753 if (retval) {
754 com_err("set_csum", retval, "while getting next inode");
755 exit(1);
756 }
757 if (!ino)
758 break;
759 if (ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
760 inode_dirty = 1;
761 } else {
762 if (memcmp(inode, zero, length) != 0) {
763 memset(inode, 0, length);
764 inode_dirty = 1;
765 } else {
766 inode_dirty = 0;
767 }
768 }
769
770 if (inode_dirty) {
771 retval = ext2fs_write_inode_full(fs, ino, inode,
772 length);
773 if (retval) {
774 com_err("set_csum", retval, "while writing "
775 "inode");
776 exit(1);
777 }
778 }
779
780 retval = rewrite_extents(fs, ino, inode);
781 if (retval) {
782 com_err("rewrite_extents", retval,
783 "while rewriting extents");
784 exit(1);
785 }
786
787 if (LINUX_S_ISDIR(inode->i_mode) &&
788 ext2fs_inode_has_valid_blocks2(fs, inode)) {
789 retval = rewrite_directory(fs, ino, inode);
790 if (retval) {
791 com_err("rewrite_directory", retval,
792 "while rewriting directories");
793 exit(1);
794 }
795 }
796
797 file_acl_block = ext2fs_file_acl_block(fs, inode);
798 if (!file_acl_block)
799 continue;
800 retval = ext2fs_read_ext_attr3(fs, file_acl_block, ea_buf, ino);
801 if (retval) {
802 com_err("rewrite_eablock", retval,
803 "while rewriting extended attribute");
804 exit(1);
805 }
806 retval = ext2fs_write_ext_attr3(fs, file_acl_block, ea_buf,
807 ino);
808 if (retval) {
809 com_err("rewrite_eablock", retval,
810 "while rewriting extended attribute");
811 exit(1);
812 }
813 } while (ino);
814
815 ext2fs_free_mem(&zero);
816 ext2fs_free_mem(&inode);
817 ext2fs_free_mem(&ea_buf);
818 ext2fs_close_inode_scan(scan);
819 }
820
821 static void rewrite_metadata_checksums(ext2_filsys fs)
822 {
823 errcode_t retval;
824 dgrp_t i;
825
826 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
827 ext2fs_init_csum_seed(fs);
828 for (i = 0; i < fs->group_desc_count; i++)
829 ext2fs_group_desc_csum_set(fs, i);
830 retval = ext2fs_read_bitmaps(fs);
831 if (retval) {
832 com_err("rewrite_metadata_checksums", retval,
833 "while reading bitmaps");
834 exit(1);
835 }
836 rewrite_inodes(fs);
837 ext2fs_mark_ib_dirty(fs);
838 ext2fs_mark_bb_dirty(fs);
839 ext2fs_mmp_update2(fs, 1);
840 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
841 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
842 if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
843 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
844 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
845 else
846 fs->super->s_checksum_type = 0;
847 ext2fs_mark_super_dirty(fs);
848 }
849
850 static void enable_uninit_bg(ext2_filsys fs)
851 {
852 struct ext2_group_desc *gd;
853 dgrp_t i;
854
855 for (i = 0; i < fs->group_desc_count; i++) {
856 gd = ext2fs_group_desc(fs, fs->group_desc, i);
857 gd->bg_itable_unused = 0;
858 gd->bg_flags = EXT2_BG_INODE_ZEROED;
859 ext2fs_group_desc_csum_set(fs, i);
860 }
861 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
862 }
863
864 static errcode_t zero_empty_inodes(ext2_filsys fs)
865 {
866 int length = EXT2_INODE_SIZE(fs->super);
867 struct ext2_inode *inode = NULL;
868 ext2_inode_scan scan;
869 errcode_t retval;
870 ext2_ino_t ino;
871
872 retval = ext2fs_open_inode_scan(fs, 0, &scan);
873 if (retval)
874 goto out;
875
876 retval = ext2fs_get_mem(length, &inode);
877 if (retval)
878 goto out;
879
880 do {
881 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
882 if (retval)
883 goto out;
884 if (!ino)
885 break;
886 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
887 memset(inode, 0, length);
888 retval = ext2fs_write_inode_full(fs, ino, inode,
889 length);
890 if (retval)
891 goto out;
892 }
893 } while (1);
894
895 out:
896 ext2fs_free_mem(&inode);
897 ext2fs_close_inode_scan(scan);
898 return retval;
899 }
900
901 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
902 {
903 struct ext2_group_desc *gd;
904 dgrp_t i;
905 errcode_t retval;
906 blk64_t b, c, d;
907
908 /* Load bitmaps to ensure that the uninit ones get written out */
909 fs->super->s_feature_ro_compat |= csum_feature_flag;
910 retval = ext2fs_read_bitmaps(fs);
911 fs->super->s_feature_ro_compat &= ~csum_feature_flag;
912 if (retval) {
913 com_err("disable_uninit_bg", retval,
914 "while reading bitmaps");
915 request_fsck_afterwards(fs);
916 return retval;
917 }
918 ext2fs_mark_ib_dirty(fs);
919 ext2fs_mark_bb_dirty(fs);
920
921 /* If we're only turning off uninit_bg, zero the inodes */
922 if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
923 retval = zero_empty_inodes(fs);
924 if (retval) {
925 com_err("disable_uninit_bg", retval,
926 "while zeroing unused inodes");
927 request_fsck_afterwards(fs);
928 return retval;
929 }
930 }
931
932 /* The bbitmap is zeroed; we must mark group metadata blocks in use */
933 for (i = 0; i < fs->group_desc_count; i++) {
934 b = ext2fs_block_bitmap_loc(fs, i);
935 ext2fs_mark_block_bitmap2(fs->block_map, b);
936 b = ext2fs_inode_bitmap_loc(fs, i);
937 ext2fs_mark_block_bitmap2(fs->block_map, b);
938
939 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
940 if (retval == 0 && b)
941 ext2fs_mark_block_bitmap2(fs->block_map, b);
942 if (retval == 0 && c)
943 ext2fs_mark_block_bitmap2(fs->block_map, c);
944 if (retval == 0 && d)
945 ext2fs_mark_block_bitmap2(fs->block_map, d);
946 if (retval) {
947 com_err("disable_uninit_bg", retval,
948 "while initializing block bitmaps");
949 request_fsck_afterwards(fs);
950 }
951
952 gd = ext2fs_group_desc(fs, fs->group_desc, i);
953 gd->bg_itable_unused = 0;
954 gd->bg_flags = 0;
955 ext2fs_group_desc_csum_set(fs, i);
956 }
957 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
958 ext2fs_mark_super_dirty(fs);
959
960 return 0;
961 }
962
963 /*
964 * Update the feature set as provided by the user.
965 */
966 static int update_feature_set(ext2_filsys fs, char *features)
967 {
968 struct ext2_super_block *sb = fs->super;
969 __u32 old_features[3];
970 int type_err;
971 unsigned int mask_err;
972 errcode_t err;
973
974 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
975 ((&sb->s_feature_compat)[(type)] & (mask)))
976 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
977 !((&sb->s_feature_compat)[(type)] & (mask)))
978 #define FEATURE_CHANGED(type, mask) ((mask) & \
979 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
980
981 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
982 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
983 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
984
985 if (e2p_edit_feature2(features, &sb->s_feature_compat,
986 ok_features, clear_ok_features,
987 &type_err, &mask_err)) {
988 if (!mask_err)
989 fprintf(stderr,
990 _("Invalid filesystem option set: %s\n"),
991 features);
992 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
993 fprintf(stderr, _("Clearing filesystem feature '%s' "
994 "not supported.\n"),
995 e2p_feature2string(type_err &
996 E2P_FEATURE_TYPE_MASK,
997 mask_err));
998 else
999 fprintf(stderr, _("Setting filesystem feature '%s' "
1000 "not supported.\n"),
1001 e2p_feature2string(type_err, mask_err));
1002 return 1;
1003 }
1004
1005 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1006 if ((mount_flags & EXT2_MF_MOUNTED) &&
1007 !(mount_flags & EXT2_MF_READONLY)) {
1008 fputs(_("The has_journal feature may only be "
1009 "cleared when the filesystem is\n"
1010 "unmounted or mounted "
1011 "read-only.\n"), stderr);
1012 return 1;
1013 }
1014 if ((sb->s_feature_incompat &
1015 EXT3_FEATURE_INCOMPAT_RECOVER) &&
1016 f_flag < 2) {
1017 fputs(_("The needs_recovery flag is set. "
1018 "Please run e2fsck before clearing\n"
1019 "the has_journal flag.\n"), stderr);
1020 return 1;
1021 }
1022 if (sb->s_journal_inum) {
1023 if (remove_journal_inode(fs))
1024 return 1;
1025 }
1026 if (sb->s_journal_dev) {
1027 if (remove_journal_device(fs))
1028 return 1;
1029 }
1030 }
1031
1032 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1033 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1034 if (sb->s_feature_incompat &
1035 EXT2_FEATURE_INCOMPAT_META_BG) {
1036 fputs(_("Setting filesystem feature 'sparse_super' "
1037 "not supported\nfor filesystems with "
1038 "the meta_bg feature enabled.\n"),
1039 stderr);
1040 return 1;
1041 }
1042 }
1043
1044 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1045 int error;
1046
1047 if ((mount_flags & EXT2_MF_MOUNTED) ||
1048 (mount_flags & EXT2_MF_READONLY)) {
1049 fputs(_("The multiple mount protection feature can't\n"
1050 "be set if the filesystem is mounted or\n"
1051 "read-only.\n"), stderr);
1052 return 1;
1053 }
1054
1055 error = ext2fs_mmp_init(fs);
1056 if (error) {
1057 fputs(_("\nError while enabling multiple mount "
1058 "protection feature."), stderr);
1059 return 1;
1060 }
1061
1062 /*
1063 * We want to update group desc with the new free blocks count
1064 */
1065 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1066
1067 printf(_("Multiple mount protection has been enabled "
1068 "with update interval %ds.\n"),
1069 sb->s_mmp_update_interval);
1070 }
1071
1072 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1073 int error;
1074
1075 if (mount_flags & EXT2_MF_READONLY) {
1076 fputs(_("The multiple mount protection feature cannot\n"
1077 "be disabled if the filesystem is readonly.\n"),
1078 stderr);
1079 return 1;
1080 }
1081
1082 error = ext2fs_read_bitmaps(fs);
1083 if (error) {
1084 fputs(_("Error while reading bitmaps\n"), stderr);
1085 return 1;
1086 }
1087
1088 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1089 if (error) {
1090 struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1091
1092 if (error == EXT2_ET_MMP_MAGIC_INVALID)
1093 printf(_("Magic number in MMP block does not "
1094 "match. expected: %x, actual: %x\n"),
1095 EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1096 else
1097 com_err(program_name, error, "%s",
1098 _("while reading MMP block."));
1099 goto mmp_error;
1100 }
1101
1102 /* We need to force out the group descriptors as well */
1103 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1104 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1105 mmp_error:
1106 sb->s_mmp_block = 0;
1107 sb->s_mmp_update_interval = 0;
1108 }
1109
1110 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1111 /*
1112 * If adding a journal flag, let the create journal
1113 * code below handle setting the flag and creating the
1114 * journal. We supply a default size if necessary.
1115 */
1116 if (!journal_size)
1117 journal_size = -1;
1118 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1119 }
1120
1121 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1122 if (!sb->s_def_hash_version)
1123 sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1124 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1125 uuid_generate((unsigned char *) sb->s_hash_seed);
1126 }
1127
1128 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1129 if (ext2fs_check_desc(fs)) {
1130 fputs(_("Clearing the flex_bg flag would "
1131 "cause the the filesystem to be\n"
1132 "inconsistent.\n"), stderr);
1133 return 1;
1134 }
1135 }
1136
1137 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1138 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1139 if ((mount_flags & EXT2_MF_MOUNTED) &&
1140 !(mount_flags & EXT2_MF_READONLY)) {
1141 fputs(_("The huge_file feature may only be "
1142 "cleared when the filesystem is\n"
1143 "unmounted or mounted "
1144 "read-only.\n"), stderr);
1145 return 1;
1146 }
1147 }
1148
1149 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1150 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1151 if (check_fsck_needed(fs))
1152 exit(1);
1153 if (mount_flags & EXT2_MF_MOUNTED) {
1154 fputs(_("Cannot enable metadata_csum on a mounted "
1155 "filesystem!\n"), stderr);
1156 exit(1);
1157 }
1158 if (!EXT2_HAS_INCOMPAT_FEATURE(fs->super,
1159 EXT3_FEATURE_INCOMPAT_EXTENTS))
1160 printf("%s",
1161 _("Extents are not enabled. The file extent "
1162 "tree can be checksummed, whereas block maps "
1163 "cannot. Not enabling extents reduces the "
1164 "coverage of metadata checksumming. "
1165 "Re-run with -O extent to rectify.\n"));
1166 if (!EXT2_HAS_INCOMPAT_FEATURE(fs->super,
1167 EXT4_FEATURE_INCOMPAT_64BIT))
1168 printf("%s",
1169 _("64-bit filesystem support is not enabled. "
1170 "The larger fields afforded by this feature "
1171 "enable full-strength checksumming. "
1172 "Run resize2fs -b to rectify.\n"));
1173 rewrite_checksums = 1;
1174 /* metadata_csum supersedes uninit_bg */
1175 fs->super->s_feature_ro_compat &=
1176 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1177
1178 /* if uninit_bg was previously off, rewrite group desc */
1179 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1180 EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1181 enable_uninit_bg(fs);
1182
1183 /*
1184 * Since metadata_csum supersedes uninit_bg, pretend like
1185 * uninit_bg has been off all along.
1186 */
1187 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1188 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1189 }
1190
1191 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1192 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1193 __u32 test_features[3];
1194
1195 if (check_fsck_needed(fs))
1196 exit(1);
1197 if (mount_flags & EXT2_MF_MOUNTED) {
1198 fputs(_("Cannot disable metadata_csum on a mounted "
1199 "filesystem!\n"), stderr);
1200 exit(1);
1201 }
1202 rewrite_checksums = 1;
1203
1204 /* Enable uninit_bg unless the user expressly turned it off */
1205 memcpy(test_features, old_features, sizeof(test_features));
1206 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1207 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1208 e2p_edit_feature2(features, test_features, ok_features,
1209 clear_ok_features, NULL, NULL);
1210 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1211 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1212 fs->super->s_feature_ro_compat |=
1213 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1214
1215 /*
1216 * If we're turning off metadata_csum and not turning on
1217 * uninit_bg, rewrite group desc.
1218 */
1219 if (!(fs->super->s_feature_ro_compat &
1220 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1221 err = disable_uninit_bg(fs,
1222 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1223 if (err)
1224 return 1;
1225 } else
1226 /*
1227 * metadata_csum previously provided uninit_bg, so if
1228 * we're also setting the uninit_bg feature bit,
1229 * pretend like it was previously enabled. Checksums
1230 * will be rewritten with crc16 later.
1231 */
1232 old_features[E2P_FEATURE_RO_INCOMPAT] |=
1233 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1234 }
1235
1236 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1237 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1238 /* Do not enable uninit_bg when metadata_csum enabled */
1239 if (fs->super->s_feature_ro_compat &
1240 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)
1241 fs->super->s_feature_ro_compat &=
1242 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1243 else
1244 enable_uninit_bg(fs);
1245 }
1246
1247 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1248 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1249 err = disable_uninit_bg(fs,
1250 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1251 if (err)
1252 return 1;
1253 }
1254
1255 /*
1256 * We don't actually toggle 64bit; resize2fs does that. But this
1257 * must come after the metadata_csum feature_on so that it won't
1258 * complain about the lack of 64bit.
1259 */
1260 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1261 EXT4_FEATURE_INCOMPAT_64BIT)) {
1262 if (mount_flags & EXT2_MF_MOUNTED) {
1263 fprintf(stderr, _("Cannot enable 64-bit mode "
1264 "while mounted!\n"));
1265 exit(1);
1266 }
1267 sb->s_feature_incompat &= ~EXT4_FEATURE_INCOMPAT_64BIT;
1268 feature_64bit = 1;
1269 }
1270 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1271 EXT4_FEATURE_INCOMPAT_64BIT)) {
1272 if (mount_flags & EXT2_MF_MOUNTED) {
1273 fprintf(stderr, _("Cannot disable 64-bit mode "
1274 "while mounted!\n"));
1275 exit(1);
1276 }
1277 sb->s_feature_incompat |= EXT4_FEATURE_INCOMPAT_64BIT;
1278 feature_64bit = -1;
1279 }
1280
1281 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1282 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1283 /*
1284 * Set the Q_flag here and handle the quota options in the code
1285 * below.
1286 */
1287 if (!Q_flag) {
1288 Q_flag = 1;
1289 /* Enable both user quota and group quota by default */
1290 usrquota = QOPT_ENABLE;
1291 grpquota = QOPT_ENABLE;
1292 }
1293 sb->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
1294 }
1295
1296 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1297 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1298 /*
1299 * Set the Q_flag here and handle the quota options in the code
1300 * below.
1301 */
1302 if (Q_flag)
1303 fputs(_("\nWarning: '^quota' option overrides '-Q'"
1304 "arguments.\n"), stderr);
1305 Q_flag = 1;
1306 /* Disable both user quota and group quota by default */
1307 usrquota = QOPT_DISABLE;
1308 grpquota = QOPT_DISABLE;
1309 }
1310
1311 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1312 fs->super->s_encrypt_algos[0] =
1313 EXT4_ENCRYPTION_MODE_AES_256_XTS;
1314 fs->super->s_encrypt_algos[1] =
1315 EXT4_ENCRYPTION_MODE_AES_256_CTS;
1316 }
1317
1318 if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1319 (sb->s_feature_compat || sb->s_feature_ro_compat ||
1320 sb->s_feature_incompat))
1321 ext2fs_update_dynamic_rev(fs);
1322
1323 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1324 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1325 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1326 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1327 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1328 EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1329 FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1330 EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1331 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1332 EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1333 request_fsck_afterwards(fs);
1334
1335 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1336 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1337 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1338 ext2fs_mark_super_dirty(fs);
1339
1340 return 0;
1341 }
1342
1343 /*
1344 * Add a journal to the filesystem.
1345 */
1346 static int add_journal(ext2_filsys fs)
1347 {
1348 unsigned long journal_blocks;
1349 errcode_t retval;
1350 ext2_filsys jfs;
1351 io_manager io_ptr;
1352
1353 if (fs->super->s_feature_compat &
1354 EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
1355 fputs(_("The filesystem already has a journal.\n"), stderr);
1356 goto err;
1357 }
1358 if (journal_device) {
1359 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1360 NULL))
1361 proceed_question(-1);
1362 check_mount(journal_device, 0, _("journal"));
1363 #ifdef CONFIG_TESTIO_DEBUG
1364 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1365 io_ptr = test_io_manager;
1366 test_io_backing_manager = unix_io_manager;
1367 } else
1368 #endif
1369 io_ptr = unix_io_manager;
1370 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1371 EXT2_FLAG_JOURNAL_DEV_OK, 0,
1372 fs->blocksize, io_ptr, &jfs);
1373 if (retval) {
1374 com_err(program_name, retval,
1375 _("\n\twhile trying to open journal on %s\n"),
1376 journal_device);
1377 goto err;
1378 }
1379 printf(_("Creating journal on device %s: "),
1380 journal_device);
1381 fflush(stdout);
1382
1383 retval = ext2fs_add_journal_device(fs, jfs);
1384 ext2fs_close_free(&jfs);
1385 if (retval) {
1386 com_err(program_name, retval,
1387 _("while adding filesystem to journal on %s"),
1388 journal_device);
1389 goto err;
1390 }
1391 fputs(_("done\n"), stdout);
1392 } else if (journal_size) {
1393 fputs(_("Creating journal inode: "), stdout);
1394 fflush(stdout);
1395 journal_blocks = figure_journal_size(journal_size, fs);
1396
1397 if (journal_location_string)
1398 journal_location =
1399 parse_num_blocks2(journal_location_string,
1400 fs->super->s_log_block_size);
1401 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
1402 journal_location,
1403 journal_flags);
1404 if (retval) {
1405 fprintf(stderr, "\n");
1406 com_err(program_name, retval, "%s",
1407 _("\n\twhile trying to create journal file"));
1408 return retval;
1409 } else
1410 fputs(_("done\n"), stdout);
1411 /*
1412 * If the filesystem wasn't mounted, we need to force
1413 * the block group descriptors out.
1414 */
1415 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1416 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1417 }
1418 print_check_message(fs->super->s_max_mnt_count,
1419 fs->super->s_checkinterval);
1420 return 0;
1421
1422 err:
1423 free(journal_device);
1424 return 1;
1425 }
1426
1427 static void handle_quota_options(ext2_filsys fs)
1428 {
1429 quota_ctx_t qctx;
1430 ext2_ino_t qf_ino;
1431
1432 if (!usrquota && !grpquota)
1433 /* Nothing to do. */
1434 return;
1435
1436 quota_init_context(&qctx, fs, -1);
1437
1438 if (usrquota == QOPT_ENABLE || grpquota == QOPT_ENABLE)
1439 quota_compute_usage(qctx);
1440
1441 if (usrquota == QOPT_ENABLE && !fs->super->s_usr_quota_inum) {
1442 if ((qf_ino = quota_file_exists(fs, USRQUOTA,
1443 QFMT_VFS_V1)) > 0)
1444 quota_update_limits(qctx, qf_ino, USRQUOTA);
1445 quota_write_inode(qctx, USRQUOTA);
1446 } else if (usrquota == QOPT_DISABLE) {
1447 quota_remove_inode(fs, USRQUOTA);
1448 }
1449
1450 if (grpquota == QOPT_ENABLE && !fs->super->s_grp_quota_inum) {
1451 if ((qf_ino = quota_file_exists(fs, GRPQUOTA,
1452 QFMT_VFS_V1)) > 0)
1453 quota_update_limits(qctx, qf_ino, GRPQUOTA);
1454 quota_write_inode(qctx, GRPQUOTA);
1455 } else if (grpquota == QOPT_DISABLE) {
1456 quota_remove_inode(fs, GRPQUOTA);
1457 }
1458
1459 quota_release_context(&qctx);
1460
1461 if ((usrquota == QOPT_ENABLE) || (grpquota == QOPT_ENABLE)) {
1462 fs->super->s_feature_ro_compat |= EXT4_FEATURE_RO_COMPAT_QUOTA;
1463 ext2fs_mark_super_dirty(fs);
1464 } else if (!fs->super->s_usr_quota_inum &&
1465 !fs->super->s_grp_quota_inum) {
1466 fs->super->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
1467 ext2fs_mark_super_dirty(fs);
1468 }
1469
1470 return;
1471 }
1472
1473 #ifdef CONFIG_QUOTA
1474 static void parse_quota_opts(const char *opts)
1475 {
1476 char *buf, *token, *next, *p;
1477 int len;
1478
1479 len = strlen(opts);
1480 buf = malloc(len+1);
1481 if (!buf) {
1482 fputs(_("Couldn't allocate memory to parse quota "
1483 "options!\n"), stderr);
1484 exit(1);
1485 }
1486 strcpy(buf, opts);
1487 for (token = buf; token && *token; token = next) {
1488 p = strchr(token, ',');
1489 next = 0;
1490 if (p) {
1491 *p = 0;
1492 next = p+1;
1493 }
1494
1495 if (strcmp(token, "usrquota") == 0) {
1496 usrquota = QOPT_ENABLE;
1497 } else if (strcmp(token, "^usrquota") == 0) {
1498 usrquota = QOPT_DISABLE;
1499 } else if (strcmp(token, "grpquota") == 0) {
1500 grpquota = QOPT_ENABLE;
1501 } else if (strcmp(token, "^grpquota") == 0) {
1502 grpquota = QOPT_DISABLE;
1503 } else {
1504 fputs(_("\nBad quota options specified.\n\n"
1505 "Following valid quota options are available "
1506 "(pass by separating with comma):\n"
1507 "\t[^]usrquota\n"
1508 "\t[^]grpquota\n"
1509 "\n\n"), stderr);
1510 free(buf);
1511 exit(1);
1512 }
1513 }
1514 free(buf);
1515 }
1516 #endif
1517
1518 static void parse_e2label_options(int argc, char ** argv)
1519 {
1520 if ((argc < 2) || (argc > 3)) {
1521 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1522 exit(1);
1523 }
1524 io_options = strchr(argv[1], '?');
1525 if (io_options)
1526 *io_options++ = 0;
1527 device_name = blkid_get_devname(NULL, argv[1], NULL);
1528 if (!device_name) {
1529 com_err("e2label", 0, _("Unable to resolve '%s'"),
1530 argv[1]);
1531 exit(1);
1532 }
1533 open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
1534 if (argc == 3) {
1535 open_flag |= EXT2_FLAG_RW;
1536 L_flag = 1;
1537 new_label = argv[2];
1538 } else
1539 print_label++;
1540 }
1541
1542 static time_t parse_time(char *str)
1543 {
1544 struct tm ts;
1545
1546 if (strcmp(str, "now") == 0) {
1547 return (time(0));
1548 }
1549 memset(&ts, 0, sizeof(ts));
1550 #ifdef HAVE_STRPTIME
1551 strptime(str, "%Y%m%d%H%M%S", &ts);
1552 #else
1553 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1554 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1555 ts.tm_year -= 1900;
1556 ts.tm_mon -= 1;
1557 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1558 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1559 ts.tm_min > 59 || ts.tm_sec > 61)
1560 ts.tm_mday = 0;
1561 #endif
1562 if (ts.tm_mday == 0) {
1563 com_err(program_name, 0,
1564 _("Couldn't parse date/time specifier: %s"),
1565 str);
1566 usage();
1567 }
1568 ts.tm_isdst = -1;
1569 return (mktime(&ts));
1570 }
1571
1572 static void parse_tune2fs_options(int argc, char **argv)
1573 {
1574 int c;
1575 char *tmp;
1576 struct group *gr;
1577 struct passwd *pw;
1578 char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:";
1579
1580 #ifdef CONFIG_QUOTA
1581 strcat(optstring, "Q:");
1582 #endif
1583 open_flag = 0;
1584
1585 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1586 while ((c = getopt(argc, argv, optstring)) != EOF)
1587 switch (c) {
1588 case 'c':
1589 max_mount_count = strtol(optarg, &tmp, 0);
1590 if (*tmp || max_mount_count > 16000) {
1591 com_err(program_name, 0,
1592 _("bad mounts count - %s"),
1593 optarg);
1594 usage();
1595 }
1596 if (max_mount_count == 0)
1597 max_mount_count = -1;
1598 c_flag = 1;
1599 open_flag = EXT2_FLAG_RW;
1600 break;
1601 case 'C':
1602 mount_count = strtoul(optarg, &tmp, 0);
1603 if (*tmp || mount_count > 16000) {
1604 com_err(program_name, 0,
1605 _("bad mounts count - %s"),
1606 optarg);
1607 usage();
1608 }
1609 C_flag = 1;
1610 open_flag = EXT2_FLAG_RW;
1611 break;
1612 case 'e':
1613 if (strcmp(optarg, "continue") == 0)
1614 errors = EXT2_ERRORS_CONTINUE;
1615 else if (strcmp(optarg, "remount-ro") == 0)
1616 errors = EXT2_ERRORS_RO;
1617 else if (strcmp(optarg, "panic") == 0)
1618 errors = EXT2_ERRORS_PANIC;
1619 else {
1620 com_err(program_name, 0,
1621 _("bad error behavior - %s"),
1622 optarg);
1623 usage();
1624 }
1625 e_flag = 1;
1626 open_flag = EXT2_FLAG_RW;
1627 break;
1628 case 'E':
1629 extended_cmd = optarg;
1630 open_flag |= EXT2_FLAG_RW;
1631 break;
1632 case 'f': /* Force */
1633 f_flag++;
1634 break;
1635 case 'g':
1636 resgid = strtoul(optarg, &tmp, 0);
1637 if (*tmp) {
1638 gr = getgrnam(optarg);
1639 if (gr == NULL)
1640 tmp = optarg;
1641 else {
1642 resgid = gr->gr_gid;
1643 *tmp = 0;
1644 }
1645 }
1646 if (*tmp) {
1647 com_err(program_name, 0,
1648 _("bad gid/group name - %s"),
1649 optarg);
1650 usage();
1651 }
1652 g_flag = 1;
1653 open_flag = EXT2_FLAG_RW;
1654 break;
1655 case 'i':
1656 interval = strtoul(optarg, &tmp, 0);
1657 switch (*tmp) {
1658 case 's':
1659 tmp++;
1660 break;
1661 case '\0':
1662 case 'd':
1663 case 'D': /* days */
1664 interval *= 86400;
1665 if (*tmp != '\0')
1666 tmp++;
1667 break;
1668 case 'm':
1669 case 'M': /* months! */
1670 interval *= 86400 * 30;
1671 tmp++;
1672 break;
1673 case 'w':
1674 case 'W': /* weeks */
1675 interval *= 86400 * 7;
1676 tmp++;
1677 break;
1678 }
1679 if (*tmp) {
1680 com_err(program_name, 0,
1681 _("bad interval - %s"), optarg);
1682 usage();
1683 }
1684 i_flag = 1;
1685 open_flag = EXT2_FLAG_RW;
1686 break;
1687 case 'j':
1688 if (!journal_size)
1689 journal_size = -1;
1690 open_flag = EXT2_FLAG_RW;
1691 break;
1692 case 'J':
1693 parse_journal_opts(optarg);
1694 open_flag = EXT2_FLAG_RW;
1695 break;
1696 case 'l':
1697 l_flag = 1;
1698 break;
1699 case 'L':
1700 new_label = optarg;
1701 L_flag = 1;
1702 open_flag |= EXT2_FLAG_RW |
1703 EXT2_FLAG_JOURNAL_DEV_OK;
1704 break;
1705 case 'm':
1706 reserved_ratio = strtod(optarg, &tmp);
1707 if (*tmp || reserved_ratio > 50 ||
1708 reserved_ratio < 0) {
1709 com_err(program_name, 0,
1710 _("bad reserved block ratio - %s"),
1711 optarg);
1712 usage();
1713 }
1714 m_flag = 1;
1715 open_flag = EXT2_FLAG_RW;
1716 break;
1717 case 'M':
1718 new_last_mounted = optarg;
1719 M_flag = 1;
1720 open_flag = EXT2_FLAG_RW;
1721 break;
1722 case 'o':
1723 if (mntopts_cmd) {
1724 com_err(program_name, 0, "%s",
1725 _("-o may only be specified once"));
1726 usage();
1727 }
1728 mntopts_cmd = optarg;
1729 open_flag = EXT2_FLAG_RW;
1730 break;
1731 case 'O':
1732 if (features_cmd) {
1733 com_err(program_name, 0, "%s",
1734 _("-O may only be specified once"));
1735 usage();
1736 }
1737 features_cmd = optarg;
1738 open_flag = EXT2_FLAG_RW;
1739 break;
1740 #ifdef CONFIG_QUOTA
1741 case 'Q':
1742 Q_flag = 1;
1743 parse_quota_opts(optarg);
1744 open_flag = EXT2_FLAG_RW;
1745 break;
1746 #endif
1747 case 'r':
1748 reserved_blocks = strtoul(optarg, &tmp, 0);
1749 if (*tmp) {
1750 com_err(program_name, 0,
1751 _("bad reserved blocks count - %s"),
1752 optarg);
1753 usage();
1754 }
1755 r_flag = 1;
1756 open_flag = EXT2_FLAG_RW;
1757 break;
1758 case 's': /* Deprecated */
1759 s_flag = atoi(optarg);
1760 open_flag = EXT2_FLAG_RW;
1761 break;
1762 case 'T':
1763 T_flag = 1;
1764 last_check_time = parse_time(optarg);
1765 open_flag = EXT2_FLAG_RW;
1766 break;
1767 case 'u':
1768 resuid = strtoul(optarg, &tmp, 0);
1769 if (*tmp) {
1770 pw = getpwnam(optarg);
1771 if (pw == NULL)
1772 tmp = optarg;
1773 else {
1774 resuid = pw->pw_uid;
1775 *tmp = 0;
1776 }
1777 }
1778 if (*tmp) {
1779 com_err(program_name, 0,
1780 _("bad uid/user name - %s"),
1781 optarg);
1782 usage();
1783 }
1784 u_flag = 1;
1785 open_flag = EXT2_FLAG_RW;
1786 break;
1787 case 'U':
1788 new_UUID = optarg;
1789 U_flag = 1;
1790 open_flag = EXT2_FLAG_RW |
1791 EXT2_FLAG_JOURNAL_DEV_OK;
1792 break;
1793 case 'I':
1794 new_inode_size = strtoul(optarg, &tmp, 0);
1795 if (*tmp) {
1796 com_err(program_name, 0,
1797 _("bad inode size - %s"),
1798 optarg);
1799 usage();
1800 }
1801 if (!((new_inode_size &
1802 (new_inode_size - 1)) == 0)) {
1803 com_err(program_name, 0,
1804 _("Inode size must be a "
1805 "power of two- %s"),
1806 optarg);
1807 usage();
1808 }
1809 open_flag = EXT2_FLAG_RW;
1810 I_flag = 1;
1811 break;
1812 case 'z':
1813 undo_file = optarg;
1814 break;
1815 default:
1816 usage();
1817 }
1818 if (optind < argc - 1 || optind == argc)
1819 usage();
1820 if (!open_flag && !l_flag)
1821 usage();
1822 io_options = strchr(argv[optind], '?');
1823 if (io_options)
1824 *io_options++ = 0;
1825 device_name = blkid_get_devname(NULL, argv[optind], NULL);
1826 if (!device_name) {
1827 com_err(program_name, 0, _("Unable to resolve '%s'"),
1828 argv[optind]);
1829 exit(1);
1830 }
1831 }
1832
1833 #ifdef CONFIG_BUILD_FINDFS
1834 void do_findfs(int argc, char **argv)
1835 {
1836 char *dev;
1837
1838 if ((argc != 2) ||
1839 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
1840 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
1841 exit(2);
1842 }
1843 dev = blkid_get_devname(NULL, argv[1], NULL);
1844 if (!dev) {
1845 com_err("findfs", 0, _("Unable to resolve '%s'"),
1846 argv[1]);
1847 exit(1);
1848 }
1849 puts(dev);
1850 exit(0);
1851 }
1852 #endif
1853
1854 static int parse_extended_opts(ext2_filsys fs, const char *opts)
1855 {
1856 char *buf, *token, *next, *p, *arg;
1857 int len, hash_alg;
1858 int r_usage = 0;
1859
1860 len = strlen(opts);
1861 buf = malloc(len+1);
1862 if (!buf) {
1863 fprintf(stderr, "%s",
1864 _("Couldn't allocate memory to parse options!\n"));
1865 return 1;
1866 }
1867 strcpy(buf, opts);
1868 for (token = buf; token && *token; token = next) {
1869 p = strchr(token, ',');
1870 next = 0;
1871 if (p) {
1872 *p = 0;
1873 next = p+1;
1874 }
1875 arg = strchr(token, '=');
1876 if (arg) {
1877 *arg = 0;
1878 arg++;
1879 }
1880 if (strcmp(token, "clear-mmp") == 0 ||
1881 strcmp(token, "clear_mmp") == 0) {
1882 clear_mmp = 1;
1883 } else if (strcmp(token, "mmp_update_interval") == 0) {
1884 unsigned long intv;
1885 if (!arg) {
1886 r_usage++;
1887 continue;
1888 }
1889 intv = strtoul(arg, &p, 0);
1890 if (*p) {
1891 fprintf(stderr,
1892 _("Invalid mmp_update_interval: %s\n"),
1893 arg);
1894 r_usage++;
1895 continue;
1896 }
1897 if (intv == 0) {
1898 intv = EXT4_MMP_UPDATE_INTERVAL;
1899 } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
1900 fprintf(stderr,
1901 _("mmp_update_interval too big: %lu\n"),
1902 intv);
1903 r_usage++;
1904 continue;
1905 }
1906 printf(P_("Setting multiple mount protection update "
1907 "interval to %lu second\n",
1908 "Setting multiple mount protection update "
1909 "interval to %lu seconds\n", intv),
1910 intv);
1911 fs->super->s_mmp_update_interval = intv;
1912 ext2fs_mark_super_dirty(fs);
1913 } else if (!strcmp(token, "test_fs")) {
1914 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
1915 printf("Setting test filesystem flag\n");
1916 ext2fs_mark_super_dirty(fs);
1917 } else if (!strcmp(token, "^test_fs")) {
1918 fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
1919 printf("Clearing test filesystem flag\n");
1920 ext2fs_mark_super_dirty(fs);
1921 } else if (strcmp(token, "stride") == 0) {
1922 if (!arg) {
1923 r_usage++;
1924 continue;
1925 }
1926 stride = strtoul(arg, &p, 0);
1927 if (*p) {
1928 fprintf(stderr,
1929 _("Invalid RAID stride: %s\n"),
1930 arg);
1931 r_usage++;
1932 continue;
1933 }
1934 stride_set = 1;
1935 } else if (strcmp(token, "stripe-width") == 0 ||
1936 strcmp(token, "stripe_width") == 0) {
1937 if (!arg) {
1938 r_usage++;
1939 continue;
1940 }
1941 stripe_width = strtoul(arg, &p, 0);
1942 if (*p) {
1943 fprintf(stderr,
1944 _("Invalid RAID stripe-width: %s\n"),
1945 arg);
1946 r_usage++;
1947 continue;
1948 }
1949 stripe_width_set = 1;
1950 } else if (strcmp(token, "hash_alg") == 0 ||
1951 strcmp(token, "hash-alg") == 0) {
1952 if (!arg) {
1953 r_usage++;
1954 continue;
1955 }
1956 hash_alg = e2p_string2hash(arg);
1957 if (hash_alg < 0) {
1958 fprintf(stderr,
1959 _("Invalid hash algorithm: %s\n"),
1960 arg);
1961 r_usage++;
1962 continue;
1963 }
1964 fs->super->s_def_hash_version = hash_alg;
1965 printf(_("Setting default hash algorithm "
1966 "to %s (%d)\n"),
1967 arg, hash_alg);
1968 ext2fs_mark_super_dirty(fs);
1969 } else if (!strcmp(token, "mount_opts")) {
1970 if (!arg) {
1971 r_usage++;
1972 continue;
1973 }
1974 if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
1975 fprintf(stderr,
1976 "Extended mount options too long\n");
1977 continue;
1978 }
1979 ext_mount_opts = strdup(arg);
1980 } else
1981 r_usage++;
1982 }
1983 if (r_usage) {
1984 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
1985 "Extended options are separated by commas, "
1986 "and may take an argument which\n"
1987 "\tis set off by an equals ('=') sign.\n\n"
1988 "Valid extended options are:\n"
1989 "\tclear_mmp\n"
1990 "\thash_alg=<hash algorithm>\n"
1991 "\tmount_opts=<extended default mount options>\n"
1992 "\tstride=<RAID per-disk chunk size in blocks>\n"
1993 "\tstripe_width=<RAID stride*data disks in blocks>\n"
1994 "\ttest_fs\n"
1995 "\t^test_fs\n"));
1996 free(buf);
1997 return 1;
1998 }
1999 free(buf);
2000
2001 return 0;
2002 }
2003
2004 /*
2005 * Fill in the block bitmap bmap with the information regarding the
2006 * blocks to be moved
2007 */
2008 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2009 ext2fs_block_bitmap bmap)
2010 {
2011 dgrp_t i;
2012 int retval;
2013 ext2_badblocks_list bb_list = 0;
2014 blk64_t j, needed_blocks = 0;
2015 blk64_t start_blk, end_blk;
2016
2017 retval = ext2fs_read_bb_inode(fs, &bb_list);
2018 if (retval)
2019 return retval;
2020
2021 for (i = 0; i < fs->group_desc_count; i++) {
2022 start_blk = ext2fs_inode_table_loc(fs, i) +
2023 fs->inode_blocks_per_group;
2024
2025 end_blk = ext2fs_inode_table_loc(fs, i) +
2026 new_ino_blks_per_grp;
2027
2028 for (j = start_blk; j < end_blk; j++) {
2029 if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2030 /*
2031 * IF the block is a bad block we fail
2032 */
2033 if (ext2fs_badblocks_list_test(bb_list, j)) {
2034 ext2fs_badblocks_list_free(bb_list);
2035 return ENOSPC;
2036 }
2037
2038 ext2fs_mark_block_bitmap2(bmap, j);
2039 } else {
2040 /*
2041 * We are going to use this block for
2042 * inode table. So mark them used.
2043 */
2044 ext2fs_mark_block_bitmap2(fs->block_map, j);
2045 }
2046 }
2047 needed_blocks += end_blk - start_blk;
2048 }
2049
2050 ext2fs_badblocks_list_free(bb_list);
2051 if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2052 return ENOSPC;
2053
2054 return 0;
2055 }
2056
2057 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2058 {
2059 dgrp_t group;
2060 group = ext2fs_group_of_blk2(fs, blk);
2061 if (ext2fs_block_bitmap_loc(fs, group) == blk)
2062 return 1;
2063 if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2064 return 1;
2065 return 0;
2066 }
2067
2068 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2069 {
2070 blk64_t start_blk, end_blk;
2071 start_blk = fs->super->s_first_data_block +
2072 EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2073 /*
2074 * We cannot get new block beyond end_blk for for the last block group
2075 * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2076 */
2077 end_blk = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2078 if (blk >= start_blk && blk <= end_blk)
2079 return 1;
2080 return 0;
2081 }
2082
2083 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2084 {
2085
2086 char *buf;
2087 dgrp_t group = 0;
2088 errcode_t retval;
2089 int meta_data = 0;
2090 blk64_t blk, new_blk, goal;
2091 struct blk_move *bmv;
2092
2093 retval = ext2fs_get_mem(fs->blocksize, &buf);
2094 if (retval)
2095 return retval;
2096
2097 for (new_blk = blk = fs->super->s_first_data_block;
2098 blk < ext2fs_blocks_count(fs->super); blk++) {
2099 if (!ext2fs_test_block_bitmap2(bmap, blk))
2100 continue;
2101
2102 if (ext2fs_is_meta_block(fs, blk)) {
2103 /*
2104 * If the block is mapping a fs meta data block
2105 * like group desc/block bitmap/inode bitmap. We
2106 * should find a block in the same group and fix
2107 * the respective fs metadata pointers. Otherwise
2108 * fail
2109 */
2110 group = ext2fs_group_of_blk2(fs, blk);
2111 goal = ext2fs_group_first_block2(fs, group);
2112 meta_data = 1;
2113
2114 } else {
2115 goal = new_blk;
2116 }
2117 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2118 if (retval)
2119 goto err_out;
2120
2121 /* new fs meta data block should be in the same group */
2122 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2123 retval = ENOSPC;
2124 goto err_out;
2125 }
2126
2127 /* Mark this block as allocated */
2128 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2129
2130 /* Add it to block move list */
2131 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2132 if (retval)
2133 goto err_out;
2134
2135 bmv->old_loc = blk;
2136 bmv->new_loc = new_blk;
2137
2138 list_add(&(bmv->list), &blk_move_list);
2139
2140 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2141 if (retval)
2142 goto err_out;
2143
2144 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2145 if (retval)
2146 goto err_out;
2147 }
2148
2149 err_out:
2150 ext2fs_free_mem(&buf);
2151 return retval;
2152 }
2153
2154 static blk64_t translate_block(blk64_t blk)
2155 {
2156 struct list_head *entry;
2157 struct blk_move *bmv;
2158
2159 list_for_each(entry, &blk_move_list) {
2160 bmv = list_entry(entry, struct blk_move, list);
2161 if (bmv->old_loc == blk)
2162 return bmv->new_loc;
2163 }
2164
2165 return 0;
2166 }
2167
2168 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2169 blk64_t *block_nr,
2170 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2171 blk64_t ref_block EXT2FS_ATTR((unused)),
2172 int ref_offset EXT2FS_ATTR((unused)),
2173 void *priv_data)
2174 {
2175 int ret = 0;
2176 blk64_t new_blk;
2177 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2178
2179 if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2180 return 0;
2181 new_blk = translate_block(*block_nr);
2182 if (new_blk) {
2183 *block_nr = new_blk;
2184 /*
2185 * This will force the ext2fs_write_inode in the iterator
2186 */
2187 ret |= BLOCK_CHANGED;
2188 }
2189
2190 return ret;
2191 }
2192
2193 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2194 {
2195 errcode_t retval = 0;
2196 ext2_ino_t ino;
2197 blk64_t blk;
2198 char *block_buf = 0;
2199 struct ext2_inode inode;
2200 ext2_inode_scan scan = NULL;
2201
2202 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2203 if (retval)
2204 return retval;
2205
2206 retval = ext2fs_open_inode_scan(fs, 0, &scan);
2207 if (retval)
2208 goto err_out;
2209
2210 while (1) {
2211 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2212 if (retval)
2213 goto err_out;
2214
2215 if (!ino)
2216 break;
2217
2218 if (inode.i_links_count == 0)
2219 continue; /* inode not in use */
2220
2221 /* FIXME!!
2222 * If we end up modifying the journal inode
2223 * the sb->s_jnl_blocks will differ. But a
2224 * subsequent e2fsck fixes that.
2225 * Do we need to fix this ??
2226 */
2227
2228 if (ext2fs_file_acl_block(fs, &inode) &&
2229 ext2fs_test_block_bitmap2(bmap,
2230 ext2fs_file_acl_block(fs, &inode))) {
2231 blk = translate_block(ext2fs_file_acl_block(fs,
2232 &inode));
2233 if (!blk)
2234 continue;
2235
2236 ext2fs_file_acl_block_set(fs, &inode, blk);
2237
2238 /*
2239 * Write the inode to disk so that inode table
2240 * resizing can work
2241 */
2242 retval = ext2fs_write_inode(fs, ino, &inode);
2243 if (retval)
2244 goto err_out;
2245 }
2246
2247 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2248 continue;
2249
2250 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2251 process_block, bmap);
2252 if (retval)
2253 goto err_out;
2254
2255 }
2256
2257 err_out:
2258 ext2fs_free_mem(&block_buf);
2259 ext2fs_close_inode_scan(scan);
2260
2261 return retval;
2262 }
2263
2264 /*
2265 * We need to scan for inode and block bitmaps that may need to be
2266 * moved. This can take place if the filesystem was formatted for
2267 * RAID arrays using the mke2fs's extended option "stride".
2268 */
2269 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2270 {
2271 dgrp_t i;
2272 blk64_t blk, new_blk;
2273
2274 for (i = 0; i < fs->group_desc_count; i++) {
2275 blk = ext2fs_block_bitmap_loc(fs, i);
2276 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2277 new_blk = translate_block(blk);
2278 if (!new_blk)
2279 continue;
2280 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2281 }
2282
2283 blk = ext2fs_inode_bitmap_loc(fs, i);
2284 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2285 new_blk = translate_block(blk);
2286 if (!new_blk)
2287 continue;
2288 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2289 }
2290 }
2291 return 0;
2292 }
2293
2294 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2295 {
2296 dgrp_t i;
2297 blk64_t blk;
2298 errcode_t retval;
2299 int new_ino_blks_per_grp;
2300 unsigned int j;
2301 char *old_itable = NULL, *new_itable = NULL;
2302 char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2303 unsigned long old_ino_size;
2304 int old_itable_size, new_itable_size;
2305
2306 old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2307 old_ino_size = EXT2_INODE_SIZE(fs->super);
2308
2309 new_ino_blks_per_grp = ext2fs_div_ceil(
2310 EXT2_INODES_PER_GROUP(fs->super) *
2311 new_ino_size,
2312 fs->blocksize);
2313
2314 new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2315
2316 retval = ext2fs_get_mem(old_itable_size, &old_itable);
2317 if (retval)
2318 return retval;
2319
2320 retval = ext2fs_get_mem(new_itable_size, &new_itable);
2321 if (retval)
2322 goto err_out;
2323
2324 tmp_old_itable = old_itable;
2325 tmp_new_itable = new_itable;
2326
2327 for (i = 0; i < fs->group_desc_count; i++) {
2328 blk = ext2fs_inode_table_loc(fs, i);
2329 retval = io_channel_read_blk64(fs->io, blk,
2330 fs->inode_blocks_per_group, old_itable);
2331 if (retval)
2332 goto err_out;
2333
2334 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2335 memcpy(new_itable, old_itable, old_ino_size);
2336
2337 memset(new_itable+old_ino_size, 0,
2338 new_ino_size - old_ino_size);
2339
2340 new_itable += new_ino_size;
2341 old_itable += old_ino_size;
2342 }
2343
2344 /* reset the pointer */
2345 old_itable = tmp_old_itable;
2346 new_itable = tmp_new_itable;
2347
2348 retval = io_channel_write_blk64(fs->io, blk,
2349 new_ino_blks_per_grp, new_itable);
2350 if (retval)
2351 goto err_out;
2352 }
2353
2354 /* Update the meta data */
2355 fs->inode_blocks_per_group = new_ino_blks_per_grp;
2356 ext2fs_free_inode_cache(fs->icache);
2357 fs->icache = 0;
2358 fs->super->s_inode_size = new_ino_size;
2359
2360 err_out:
2361 if (old_itable)
2362 ext2fs_free_mem(&old_itable);
2363
2364 if (new_itable)
2365 ext2fs_free_mem(&new_itable);
2366
2367 return retval;
2368 }
2369
2370 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
2371 {
2372 blk64_t blk;
2373 ext2_ino_t ino;
2374 unsigned int group = 0;
2375 unsigned int count = 0;
2376 int total_free = 0;
2377 int group_free = 0;
2378
2379 /*
2380 * First calculate the block statistics
2381 */
2382 for (blk = fs->super->s_first_data_block;
2383 blk < ext2fs_blocks_count(fs->super); blk++) {
2384 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
2385 group_free++;
2386 total_free++;
2387 }
2388 count++;
2389 if ((count == fs->super->s_blocks_per_group) ||
2390 (blk == ext2fs_blocks_count(fs->super)-1)) {
2391 ext2fs_bg_free_blocks_count_set(fs, group++,
2392 group_free);
2393 count = 0;
2394 group_free = 0;
2395 }
2396 }
2397 total_free = EXT2FS_C2B(fs, total_free);
2398 ext2fs_free_blocks_count_set(fs->super, total_free);
2399
2400 /*
2401 * Next, calculate the inode statistics
2402 */
2403 group_free = 0;
2404 total_free = 0;
2405 count = 0;
2406 group = 0;
2407
2408 /* Protect loop from wrap-around if s_inodes_count maxed */
2409 for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
2410 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
2411 group_free++;
2412 total_free++;
2413 }
2414 count++;
2415 if ((count == fs->super->s_inodes_per_group) ||
2416 (ino == fs->super->s_inodes_count)) {
2417 ext2fs_bg_free_inodes_count_set(fs, group++,
2418 group_free);
2419 count = 0;
2420 group_free = 0;
2421 }
2422 }
2423 fs->super->s_free_inodes_count = total_free;
2424 ext2fs_mark_super_dirty(fs);
2425 return 0;
2426 }
2427
2428 #define list_for_each_safe(pos, pnext, head) \
2429 for (pos = (head)->next, pnext = pos->next; pos != (head); \
2430 pos = pnext, pnext = pos->next)
2431
2432 static void free_blk_move_list(void)
2433 {
2434 struct list_head *entry, *tmp;
2435 struct blk_move *bmv;
2436
2437 list_for_each_safe(entry, tmp, &blk_move_list) {
2438 bmv = list_entry(entry, struct blk_move, list);
2439 list_del(entry);
2440 ext2fs_free_mem(&bmv);
2441 }
2442 return;
2443 }
2444
2445 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2446 {
2447 errcode_t retval;
2448 int new_ino_blks_per_grp;
2449 ext2fs_block_bitmap bmap;
2450
2451 retval = ext2fs_read_inode_bitmap(fs);
2452 if (retval) {
2453 fputs(_("Failed to read inode bitmap\n"), stderr);
2454 return retval;
2455 }
2456 retval = ext2fs_read_block_bitmap(fs);
2457 if (retval) {
2458 fputs(_("Failed to read block bitmap\n"), stderr);
2459 return retval;
2460 }
2461 INIT_LIST_HEAD(&blk_move_list);
2462
2463
2464 new_ino_blks_per_grp = ext2fs_div_ceil(
2465 EXT2_INODES_PER_GROUP(fs->super)*
2466 new_size,
2467 fs->blocksize);
2468
2469 /* We may change the file system.
2470 * Mark the file system as invalid so that
2471 * the user is prompted to run fsck.
2472 */
2473 fs->super->s_state &= ~EXT2_VALID_FS;
2474
2475 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2476 &bmap);
2477 if (retval) {
2478 fputs(_("Failed to allocate block bitmap when "
2479 "increasing inode size\n"), stderr);
2480 return retval;
2481 }
2482 retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2483 if (retval) {
2484 fputs(_("Not enough space to increase inode size \n"), stderr);
2485 goto err_out;
2486 }
2487 retval = move_block(fs, bmap);
2488 if (retval) {
2489 fputs(_("Failed to relocate blocks during inode resize \n"),
2490 stderr);
2491 goto err_out;
2492 }
2493 retval = inode_scan_and_fix(fs, bmap);
2494 if (retval)
2495 goto err_out_undo;
2496
2497 retval = group_desc_scan_and_fix(fs, bmap);
2498 if (retval)
2499 goto err_out_undo;
2500
2501 retval = expand_inode_table(fs, new_size);
2502 if (retval)
2503 goto err_out_undo;
2504
2505 ext2fs_calculate_summary_stats(fs);
2506
2507 fs->super->s_state |= EXT2_VALID_FS;
2508 /* mark super block and block bitmap as dirty */
2509 ext2fs_mark_super_dirty(fs);
2510 ext2fs_mark_bb_dirty(fs);
2511
2512 err_out:
2513 free_blk_move_list();
2514 ext2fs_free_block_bitmap(bmap);
2515
2516 return retval;
2517
2518 err_out_undo:
2519 free_blk_move_list();
2520 ext2fs_free_block_bitmap(bmap);
2521 fputs(_("Error in resizing the inode size.\n"
2522 "Run e2undo to undo the "
2523 "file system changes. \n"), stderr);
2524
2525 return retval;
2526 }
2527
2528 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2529 {
2530 errcode_t retval = 0;
2531 const char *tdb_dir;
2532 char *tdb_file = NULL;
2533 char *dev_name, *tmp_name;
2534
2535 /* (re)open a specific undo file */
2536 if (undo_file && undo_file[0] != 0) {
2537 retval = set_undo_io_backing_manager(*io_ptr);
2538 if (retval)
2539 goto err;
2540 *io_ptr = undo_io_manager;
2541 retval = set_undo_io_backup_file(undo_file);
2542 if (retval)
2543 goto err;
2544 printf(_("Overwriting existing filesystem; this can be undone "
2545 "using the command:\n"
2546 " e2undo %s %s\n\n"),
2547 undo_file, name);
2548 return retval;
2549 }
2550
2551 /*
2552 * Configuration via a conf file would be
2553 * nice
2554 */
2555 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2556 if (!tdb_dir)
2557 tdb_dir = "/var/lib/e2fsprogs";
2558
2559 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2560 access(tdb_dir, W_OK))
2561 return 0;
2562
2563 tmp_name = strdup(name);
2564 if (!tmp_name)
2565 goto errout;
2566 dev_name = basename(tmp_name);
2567 tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2568 if (!tdb_file) {
2569 free(tmp_name);
2570 goto errout;
2571 }
2572 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2573 free(tmp_name);
2574
2575 if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2576 retval = errno;
2577 com_err(program_name, retval,
2578 _("while trying to delete %s"), tdb_file);
2579 goto errout;
2580 }
2581
2582 retval = set_undo_io_backing_manager(*io_ptr);
2583 if (retval)
2584 goto errout;
2585 *io_ptr = undo_io_manager;
2586 retval = set_undo_io_backup_file(tdb_file);
2587 if (retval)
2588 goto errout;
2589 printf(_("Overwriting existing filesystem; this can be undone "
2590 "using the command:\n"
2591 " e2undo %s %s\n\n"),
2592 tdb_file, name);
2593
2594 free(tdb_file);
2595 return 0;
2596 errout:
2597 free(tdb_file);
2598 err:
2599 com_err("tune2fs", retval, "while trying to setup undo file\n");
2600 return retval;
2601 }
2602
2603 int
2604 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2605 {
2606 int retval, nr_users, start;
2607 journal_superblock_t *jsb;
2608 ext2_filsys jfs;
2609 __u8 *j_uuid;
2610 char *journal_path;
2611 char uuid[UUID_STR_SIZE];
2612 char buf[SUPERBLOCK_SIZE];
2613
2614 if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) ||
2615 uuid_is_null(sb->s_journal_uuid))
2616 return 0;
2617
2618 uuid_unparse(sb->s_journal_uuid, uuid);
2619 journal_path = blkid_get_devname(NULL, "UUID", uuid);
2620 if (!journal_path)
2621 return 0;
2622
2623 retval = ext2fs_open2(journal_path, io_options,
2624 EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2625 0, 0, unix_io_manager, &jfs);
2626 if (retval) {
2627 com_err(program_name, retval,
2628 _("while trying to open %s"),
2629 journal_path);
2630 return retval;
2631 }
2632
2633 retval = get_journal_sb(jfs, buf);
2634 if (retval != 0) {
2635 if (retval == EXT2_ET_UNSUPP_FEATURE)
2636 fprintf(stderr, _("%s is not a journal device.\n"),
2637 journal_path);
2638 return retval;
2639 }
2640
2641 jsb = (journal_superblock_t *) buf;
2642 /* Find the filesystem UUID */
2643 nr_users = ntohl(jsb->s_nr_users);
2644
2645 j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2646 if (j_uuid == NULL) {
2647 fputs(_("Filesystem's UUID not found on journal device.\n"),
2648 stderr);
2649 return EXT2_ET_LOAD_EXT_JOURNAL;
2650 }
2651
2652 memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2653
2654 start = ext2fs_journal_sb_start(jfs->blocksize);
2655 /* Write back the journal superblock */
2656 retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2657 if (retval != 0) {
2658 com_err(program_name, retval,
2659 "while writing journal superblock.");
2660 return retval;
2661 }
2662
2663 ext2fs_close(jfs);
2664
2665 return 0;
2666 }
2667
2668 int main(int argc, char **argv)
2669 {
2670 errcode_t retval;
2671 ext2_filsys fs;
2672 struct ext2_super_block *sb;
2673 io_manager io_ptr, io_ptr_orig = NULL;
2674 int rc = 0;
2675
2676 #ifdef ENABLE_NLS
2677 setlocale(LC_MESSAGES, "");
2678 setlocale(LC_CTYPE, "");
2679 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2680 textdomain(NLS_CAT_NAME);
2681 set_com_err_gettext(gettext);
2682 #endif
2683 if (argc && *argv)
2684 program_name = *argv;
2685 add_error_table(&et_ext2_error_table);
2686
2687 #ifdef CONFIG_BUILD_FINDFS
2688 if (strcmp(get_progname(argv[0]), "findfs") == 0)
2689 do_findfs(argc, argv);
2690 #endif
2691 if (strcmp(get_progname(argv[0]), "e2label") == 0)
2692 parse_e2label_options(argc, argv);
2693 else
2694 parse_tune2fs_options(argc, argv);
2695
2696 #ifdef CONFIG_TESTIO_DEBUG
2697 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2698 io_ptr = test_io_manager;
2699 test_io_backing_manager = unix_io_manager;
2700 } else
2701 #endif
2702 io_ptr = unix_io_manager;
2703
2704 retry_open:
2705 if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2706 open_flag |= EXT2_FLAG_SKIP_MMP;
2707
2708 open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_JOURNAL_DEV_OK;
2709
2710 /* keep the filesystem struct around to dump MMP data */
2711 open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2712
2713 retval = ext2fs_open2(device_name, io_options, open_flag,
2714 0, 0, io_ptr, &fs);
2715 if (retval) {
2716 com_err(program_name, retval,
2717 _("while trying to open %s"),
2718 device_name);
2719 if (retval == EXT2_ET_MMP_FSCK_ON ||
2720 retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2721 dump_mmp_msg(fs->mmp_buf,
2722 _("If you are sure the filesystem "
2723 "is not in use on any node, run:\n"
2724 "'tune2fs -f -E clear_mmp {device}'\n"));
2725 else if (retval == EXT2_ET_MMP_FAILED)
2726 dump_mmp_msg(fs->mmp_buf, NULL);
2727 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2728 fprintf(stderr,
2729 _("MMP block magic is bad. Try to fix it by "
2730 "running:\n'e2fsck -f %s'\n"), device_name);
2731 else if (retval == EXT2_ET_BAD_MAGIC)
2732 check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2733 else if (retval != EXT2_ET_MMP_FAILED)
2734 fprintf(stderr, "%s",
2735 _("Couldn't find valid filesystem superblock.\n"));
2736
2737 ext2fs_free(fs);
2738 exit(1);
2739 }
2740 if (EXT2_HAS_INCOMPAT_FEATURE(fs->super,
2741 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
2742 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
2743 ext2fs_free(fs);
2744 exit(1);
2745 }
2746 fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
2747
2748 if (I_flag) {
2749 /*
2750 * Check the inode size is right so we can issue an
2751 * error message and bail before setting up the tdb
2752 * file.
2753 */
2754 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
2755 fprintf(stderr, _("The inode size is already %lu\n"),
2756 new_inode_size);
2757 rc = 1;
2758 goto closefs;
2759 }
2760 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
2761 fprintf(stderr, "%s",
2762 _("Shrinking inode size is not supported\n"));
2763 rc = 1;
2764 goto closefs;
2765 }
2766 if (new_inode_size > fs->blocksize) {
2767 fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
2768 new_inode_size, fs->blocksize);
2769 rc = 1;
2770 goto closefs;
2771 }
2772 /*
2773 * If inode resize is requested use the
2774 * Undo I/O manager
2775 */
2776 undo_file = "";
2777 }
2778
2779 /* Set up an undo file */
2780 if (undo_file && io_ptr_orig == NULL) {
2781 io_ptr_orig = io_ptr;
2782 retval = tune2fs_setup_tdb(device_name, &io_ptr);
2783 if (retval) {
2784 rc = 1;
2785 goto closefs;
2786 }
2787 if (io_ptr != io_ptr_orig) {
2788 ext2fs_close_free(&fs);
2789 goto retry_open;
2790 }
2791 }
2792
2793 sb = fs->super;
2794 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2795
2796 if (print_label) {
2797 /* For e2label emulation */
2798 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
2799 sb->s_volume_name);
2800 remove_error_table(&et_ext2_error_table);
2801 goto closefs;
2802 }
2803
2804 retval = ext2fs_check_if_mounted(device_name, &mount_flags);
2805 if (retval) {
2806 com_err("ext2fs_check_if_mount", retval,
2807 _("while determining whether %s is mounted."),
2808 device_name);
2809 rc = 1;
2810 goto closefs;
2811 }
2812 /* Normally we only need to write out the superblock */
2813 fs->flags |= EXT2_FLAG_SUPER_ONLY;
2814
2815 if (c_flag) {
2816 sb->s_max_mnt_count = max_mount_count;
2817 ext2fs_mark_super_dirty(fs);
2818 printf(_("Setting maximal mount count to %d\n"),
2819 max_mount_count);
2820 }
2821 if (C_flag) {
2822 sb->s_mnt_count = mount_count;
2823 ext2fs_mark_super_dirty(fs);
2824 printf(_("Setting current mount count to %d\n"), mount_count);
2825 }
2826 if (e_flag) {
2827 sb->s_errors = errors;
2828 ext2fs_mark_super_dirty(fs);
2829 printf(_("Setting error behavior to %d\n"), errors);
2830 }
2831 if (g_flag) {
2832 sb->s_def_resgid = resgid;
2833 ext2fs_mark_super_dirty(fs);
2834 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
2835 }
2836 if (i_flag) {
2837 if ((unsigned long long)interval >= (1ULL << 32)) {
2838 com_err(program_name, 0,
2839 _("interval between checks is too big (%lu)"),
2840 interval);
2841 rc = 1;
2842 goto closefs;
2843 }
2844 sb->s_checkinterval = interval;
2845 ext2fs_mark_super_dirty(fs);
2846 printf(_("Setting interval between checks to %lu seconds\n"),
2847 interval);
2848 }
2849 if (m_flag) {
2850 ext2fs_r_blocks_count_set(sb, reserved_ratio *
2851 ext2fs_blocks_count(sb) / 100.0);
2852 ext2fs_mark_super_dirty(fs);
2853 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
2854 reserved_ratio, ext2fs_r_blocks_count(sb));
2855 }
2856 if (r_flag) {
2857 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
2858 com_err(program_name, 0,
2859 _("reserved blocks count is too big (%llu)"),
2860 reserved_blocks);
2861 rc = 1;
2862 goto closefs;
2863 }
2864 ext2fs_r_blocks_count_set(sb, reserved_blocks);
2865 ext2fs_mark_super_dirty(fs);
2866 printf(_("Setting reserved blocks count to %llu\n"),
2867 reserved_blocks);
2868 }
2869 if (s_flag == 1) {
2870 if (sb->s_feature_ro_compat &
2871 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) {
2872 fputs(_("\nThe filesystem already has sparse "
2873 "superblocks.\n"), stderr);
2874 } else if (sb->s_feature_incompat &
2875 EXT2_FEATURE_INCOMPAT_META_BG) {
2876 fputs(_("\nSetting the sparse superblock flag not "
2877 "supported\nfor filesystems with "
2878 "the meta_bg feature enabled.\n"),
2879 stderr);
2880 rc = 1;
2881 goto closefs;
2882 } else {
2883 sb->s_feature_ro_compat |=
2884 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
2885 sb->s_state &= ~EXT2_VALID_FS;
2886 ext2fs_mark_super_dirty(fs);
2887 printf(_("\nSparse superblock flag set. %s"),
2888 _(please_fsck));
2889 }
2890 }
2891 if (s_flag == 0) {
2892 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
2893 stderr);
2894 rc = 1;
2895 goto closefs;
2896 }
2897 if (T_flag) {
2898 sb->s_lastcheck = last_check_time;
2899 ext2fs_mark_super_dirty(fs);
2900 printf(_("Setting time filesystem last checked to %s\n"),
2901 ctime(&last_check_time));
2902 }
2903 if (u_flag) {
2904 sb->s_def_resuid = resuid;
2905 ext2fs_mark_super_dirty(fs);
2906 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
2907 }
2908 if (L_flag) {
2909 if (strlen(new_label) > sizeof(sb->s_volume_name))
2910 fputs(_("Warning: label too long, truncating.\n"),
2911 stderr);
2912 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
2913 strncpy(sb->s_volume_name, new_label,
2914 sizeof(sb->s_volume_name));
2915 ext2fs_mark_super_dirty(fs);
2916 }
2917 if (M_flag) {
2918 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
2919 strncpy(sb->s_last_mounted, new_last_mounted,
2920 sizeof(sb->s_last_mounted));
2921 ext2fs_mark_super_dirty(fs);
2922 }
2923 if (mntopts_cmd) {
2924 rc = update_mntopts(fs, mntopts_cmd);
2925 if (rc)
2926 goto closefs;
2927 }
2928 if (features_cmd) {
2929 rc = update_feature_set(fs, features_cmd);
2930 if (rc)
2931 goto closefs;
2932 }
2933 if (extended_cmd) {
2934 rc = parse_extended_opts(fs, extended_cmd);
2935 if (rc)
2936 goto closefs;
2937 if (clear_mmp && !f_flag) {
2938 fputs(_("Error in using clear_mmp. "
2939 "It must be used with -f\n"),
2940 stderr);
2941 goto closefs;
2942 }
2943 }
2944 if (clear_mmp) {
2945 rc = ext2fs_mmp_clear(fs);
2946 goto closefs;
2947 }
2948 if (journal_size || journal_device) {
2949 rc = add_journal(fs);
2950 if (rc)
2951 goto closefs;
2952 }
2953
2954 if (Q_flag) {
2955 if (mount_flags & EXT2_MF_MOUNTED) {
2956 fputs(_("The quota feature may only be changed when "
2957 "the filesystem is unmounted.\n"), stderr);
2958 rc = 1;
2959 goto closefs;
2960 }
2961 handle_quota_options(fs);
2962 }
2963
2964 if (U_flag) {
2965 int set_csum = 0;
2966 dgrp_t i;
2967 char buf[SUPERBLOCK_SIZE];
2968 __u8 old_uuid[UUID_SIZE];
2969
2970 if (ext2fs_has_group_desc_csum(fs)) {
2971 /*
2972 * Changing the UUID requires rewriting all metadata,
2973 * which can race with a mounted fs. Don't allow that.
2974 */
2975 if (mount_flags & EXT2_MF_MOUNTED) {
2976 fputs(_("The UUID may only be "
2977 "changed when the filesystem is "
2978 "unmounted.\n"), stderr);
2979 exit(1);
2980 }
2981 if (check_fsck_needed(fs))
2982 exit(1);
2983
2984 /*
2985 * Determine if the block group checksums are
2986 * correct so we know whether or not to set
2987 * them later on.
2988 */
2989 for (i = 0; i < fs->group_desc_count; i++)
2990 if (!ext2fs_group_desc_csum_verify(fs, i))
2991 break;
2992 if (i >= fs->group_desc_count)
2993 set_csum = 1;
2994 }
2995
2996 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
2997 if ((strcasecmp(new_UUID, "null") == 0) ||
2998 (strcasecmp(new_UUID, "clear") == 0)) {
2999 uuid_clear(sb->s_uuid);
3000 } else if (strcasecmp(new_UUID, "time") == 0) {
3001 uuid_generate_time(sb->s_uuid);
3002 } else if (strcasecmp(new_UUID, "random") == 0) {
3003 uuid_generate(sb->s_uuid);
3004 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
3005 com_err(program_name, 0, "%s",
3006 _("Invalid UUID format\n"));
3007 rc = 1;
3008 goto closefs;
3009 }
3010 ext2fs_init_csum_seed(fs);
3011 if (set_csum) {
3012 for (i = 0; i < fs->group_desc_count; i++)
3013 ext2fs_group_desc_csum_set(fs, i);
3014 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3015 }
3016
3017 /* If this is a journal dev, we need to copy UUID into jsb */
3018 if (!(rc = get_journal_sb(fs, buf))) {
3019 journal_superblock_t *jsb;
3020
3021 jsb = (journal_superblock_t *) buf;
3022 fputs(_("Need to update journal superblock.\n"), stdout);
3023 memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3024
3025 /* Writeback the journal superblock */
3026 if ((rc = io_channel_write_blk64(fs->io,
3027 ext2fs_journal_sb_start(fs->blocksize),
3028 -SUPERBLOCK_SIZE, buf)))
3029 goto closefs;
3030 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3031 goto closefs;
3032 else {
3033 rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3034
3035 if ((rc = fs_update_journal_user(sb, old_uuid)))
3036 goto closefs;
3037 }
3038
3039 ext2fs_mark_super_dirty(fs);
3040 if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
3041 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
3042 rewrite_checksums = 1;
3043 }
3044
3045 if (I_flag) {
3046 if (mount_flags & EXT2_MF_MOUNTED) {
3047 fputs(_("The inode size may only be "
3048 "changed when the filesystem is "
3049 "unmounted.\n"), stderr);
3050 rc = 1;
3051 goto closefs;
3052 }
3053 if (fs->super->s_feature_incompat &
3054 EXT4_FEATURE_INCOMPAT_FLEX_BG) {
3055 fputs(_("Changing the inode size not supported for "
3056 "filesystems with the flex_bg\n"
3057 "feature enabled.\n"),
3058 stderr);
3059 rc = 1;
3060 goto closefs;
3061 }
3062 /*
3063 * We want to update group descriptor also
3064 * with the new free inode count
3065 */
3066 if (rewrite_checksums)
3067 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3068 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3069 retval = resize_inode(fs, new_inode_size);
3070 if (rewrite_checksums)
3071 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3072 if (retval == 0) {
3073 printf(_("Setting inode size %lu\n"),
3074 new_inode_size);
3075 rewrite_checksums = 1;
3076 } else {
3077 printf("%s", _("Failed to change inode size\n"));
3078 rc = 1;
3079 goto closefs;
3080 }
3081 }
3082
3083 if (rewrite_checksums)
3084 rewrite_metadata_checksums(fs);
3085
3086 if (l_flag)
3087 list_super(sb);
3088 if (stride_set) {
3089 sb->s_raid_stride = stride;
3090 ext2fs_mark_super_dirty(fs);
3091 printf(_("Setting stride size to %d\n"), stride);
3092 }
3093 if (stripe_width_set) {
3094 sb->s_raid_stripe_width = stripe_width;
3095 ext2fs_mark_super_dirty(fs);
3096 printf(_("Setting stripe width to %d\n"), stripe_width);
3097 }
3098 if (ext_mount_opts) {
3099 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3100 sizeof(fs->super->s_mount_opts));
3101 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3102 ext2fs_mark_super_dirty(fs);
3103 printf(_("Setting extended default mount options to '%s'\n"),
3104 ext_mount_opts);
3105 free(ext_mount_opts);
3106 }
3107 free(device_name);
3108 remove_error_table(&et_ext2_error_table);
3109
3110 closefs:
3111 if (rc) {
3112 ext2fs_mmp_stop(fs);
3113 exit(1);
3114 }
3115
3116 convert_64bit(fs, feature_64bit);
3117 return (ext2fs_close_free(&fs) ? 1 : 0);
3118 }
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