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Fix Android build warnings
[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 on the filesystem.\n");
120 static const char *please_dir_fsck =
121 N_("Please run e2fsck -D 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_MMP |
157 EXT4_FEATURE_INCOMPAT_64BIT |
158 EXT4_FEATURE_INCOMPAT_ENCRYPT |
159 EXT4_FEATURE_INCOMPAT_CSUM_SEED,
160 /* R/O compat */
161 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
162 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
163 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
164 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
165 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
166 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
167 EXT4_FEATURE_RO_COMPAT_QUOTA |
168 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
169 EXT4_FEATURE_RO_COMPAT_READONLY |
170 EXT4_FEATURE_RO_COMPAT_PROJECT
171 };
172
173 static __u32 clear_ok_features[3] = {
174 /* Compat */
175 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
176 EXT2_FEATURE_COMPAT_RESIZE_INODE |
177 EXT2_FEATURE_COMPAT_DIR_INDEX,
178 /* Incompat */
179 EXT2_FEATURE_INCOMPAT_FILETYPE |
180 EXT4_FEATURE_INCOMPAT_FLEX_BG |
181 EXT4_FEATURE_INCOMPAT_MMP |
182 EXT4_FEATURE_INCOMPAT_64BIT |
183 EXT4_FEATURE_INCOMPAT_CSUM_SEED,
184 /* R/O compat */
185 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
186 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
187 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
188 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
189 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
190 EXT4_FEATURE_RO_COMPAT_QUOTA |
191 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
192 EXT4_FEATURE_RO_COMPAT_READONLY
193 };
194
195 /**
196 * Try to get journal super block if any
197 */
198 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
199 {
200 int retval;
201 journal_superblock_t *jsb;
202
203 if (!ext2fs_has_feature_journal_dev(jfs->super)) {
204 return EXT2_ET_UNSUPP_FEATURE;
205 }
206
207 /* Get the journal superblock */
208 if ((retval = io_channel_read_blk64(jfs->io,
209 ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
210 com_err(program_name, retval, "%s",
211 _("while reading journal superblock"));
212 return retval;
213 }
214
215 jsb = (journal_superblock_t *) buf;
216 if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
217 (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
218 fputs(_("Journal superblock not found!\n"), stderr);
219 return EXT2_ET_BAD_MAGIC;
220 }
221
222 return 0;
223 }
224
225 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JFS_USERS_SIZE],
226 int nr_users)
227 {
228 int i;
229 for (i = 0; i < nr_users; i++) {
230 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
231 return &s_users[i * UUID_SIZE];
232 }
233
234 return NULL;
235 }
236
237 /*
238 * Remove an external journal from the filesystem
239 */
240 static int remove_journal_device(ext2_filsys fs)
241 {
242 char *journal_path;
243 ext2_filsys jfs;
244 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
245 journal_superblock_t *jsb;
246 int i, nr_users;
247 errcode_t retval;
248 int commit_remove_journal = 0;
249 io_manager io_ptr;
250
251 if (f_flag)
252 commit_remove_journal = 1; /* force removal even if error */
253
254 uuid_unparse(fs->super->s_journal_uuid, buf);
255 journal_path = blkid_get_devname(NULL, "UUID", buf);
256
257 if (!journal_path) {
258 journal_path =
259 ext2fs_find_block_device(fs->super->s_journal_dev);
260 if (!journal_path)
261 goto no_valid_journal;
262 }
263
264 #ifdef CONFIG_TESTIO_DEBUG
265 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
266 io_ptr = test_io_manager;
267 test_io_backing_manager = unix_io_manager;
268 } else
269 #endif
270 io_ptr = unix_io_manager;
271 retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
272 EXT2_FLAG_JOURNAL_DEV_OK, 0,
273 fs->blocksize, io_ptr, &jfs);
274 if (retval) {
275 com_err(program_name, retval, "%s",
276 _("while trying to open external journal"));
277 goto no_valid_journal;
278 }
279
280 if ((retval = get_journal_sb(jfs, buf))) {
281 if (retval == EXT2_ET_UNSUPP_FEATURE)
282 fprintf(stderr, _("%s is not a journal device.\n"),
283 journal_path);
284 goto no_valid_journal;
285 }
286
287 jsb = (journal_superblock_t *) buf;
288 /* Find the filesystem UUID */
289 nr_users = ntohl(jsb->s_nr_users);
290
291 if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
292 fputs(_("Filesystem's UUID not found on journal device.\n"),
293 stderr);
294 commit_remove_journal = 1;
295 goto no_valid_journal;
296 }
297 nr_users--;
298 for (i = 0; i < nr_users; i++)
299 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
300 jsb->s_nr_users = htonl(nr_users);
301
302 /* Write back the journal superblock */
303 retval = io_channel_write_blk64(jfs->io,
304 ext2fs_journal_sb_start(fs->blocksize),
305 -SUPERBLOCK_SIZE, buf);
306 if (retval) {
307 com_err(program_name, retval,
308 "while writing journal superblock.");
309 goto no_valid_journal;
310 }
311
312 commit_remove_journal = 1;
313
314 no_valid_journal:
315 if (commit_remove_journal == 0) {
316 fputs(_("Cannot locate journal device. It was NOT removed\n"
317 "Use -f option to remove missing journal device.\n"),
318 stderr);
319 return 1;
320 }
321 fs->super->s_journal_dev = 0;
322 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
323 uuid_clear(fs->super->s_journal_uuid);
324 ext2fs_mark_super_dirty(fs);
325 fputs(_("Journal removed\n"), stdout);
326 free(journal_path);
327
328 return 0;
329 }
330
331 /* Helper function for remove_journal_inode */
332 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
333 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
334 blk64_t ref_block EXT2FS_ATTR((unused)),
335 int ref_offset EXT2FS_ATTR((unused)),
336 void *private EXT2FS_ATTR((unused)))
337 {
338 blk64_t block;
339 int group;
340
341 block = *blocknr;
342 ext2fs_unmark_block_bitmap2(fs->block_map, block);
343 group = ext2fs_group_of_blk2(fs, block);
344 ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
345 ext2fs_group_desc_csum_set(fs, group);
346 ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
347 return 0;
348 }
349
350 /*
351 * Remove the journal inode from the filesystem
352 */
353 static errcode_t remove_journal_inode(ext2_filsys fs)
354 {
355 struct ext2_inode inode;
356 errcode_t retval;
357 ino_t ino = fs->super->s_journal_inum;
358
359 retval = ext2fs_read_inode(fs, ino, &inode);
360 if (retval) {
361 com_err(program_name, retval, "%s",
362 _("while reading journal inode"));
363 return retval;
364 }
365 if (ino == EXT2_JOURNAL_INO) {
366 retval = ext2fs_read_bitmaps(fs);
367 if (retval) {
368 com_err(program_name, retval, "%s",
369 _("while reading bitmaps"));
370 return retval;
371 }
372 retval = ext2fs_block_iterate3(fs, ino,
373 BLOCK_FLAG_READ_ONLY, NULL,
374 release_blocks_proc, NULL);
375 if (retval) {
376 com_err(program_name, retval, "%s",
377 _("while clearing journal inode"));
378 return retval;
379 }
380 memset(&inode, 0, sizeof(inode));
381 ext2fs_mark_bb_dirty(fs);
382 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
383 } else
384 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
385 retval = ext2fs_write_inode(fs, ino, &inode);
386 if (retval) {
387 com_err(program_name, retval, "%s",
388 _("while writing journal inode"));
389 return retval;
390 }
391 fs->super->s_journal_inum = 0;
392 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
393 ext2fs_mark_super_dirty(fs);
394
395 return 0;
396 }
397
398 /*
399 * Update the default mount options
400 */
401 static int update_mntopts(ext2_filsys fs, char *mntopts)
402 {
403 struct ext2_super_block *sb = fs->super;
404
405 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
406 fprintf(stderr, _("Invalid mount option set: %s\n"),
407 mntopts);
408 return 1;
409 }
410 ext2fs_mark_super_dirty(fs);
411
412 return 0;
413 }
414
415 static void check_fsck_needed(ext2_filsys fs, const char *prompt)
416 {
417 /* Refuse to modify anything but a freshly checked valid filesystem. */
418 if (!(fs->super->s_state & EXT2_VALID_FS) ||
419 (fs->super->s_state & EXT2_ERROR_FS) ||
420 (fs->super->s_lastcheck < fs->super->s_mtime)) {
421 printf("\n%s\n", _(please_fsck));
422 if (mount_flags & EXT2_MF_READONLY)
423 printf("%s", _("(and reboot afterwards!)\n"));
424 exit(1);
425 }
426
427 /* Give the admin a few seconds to bail out of a dangerous op. */
428 if (!getenv("TUNE2FS_FORCE_PROMPT") && (!isatty(0) || !isatty(1)))
429 return;
430
431 puts(prompt);
432 proceed_question(5);
433 }
434
435 static void request_dir_fsck_afterwards(ext2_filsys fs)
436 {
437 static int requested;
438
439 if (requested++)
440 return;
441 fsck_requested++;
442 fs->super->s_state &= ~EXT2_VALID_FS;
443 printf("\n%s\n", _(please_dir_fsck));
444 if (mount_flags & EXT2_MF_READONLY)
445 printf("%s", _("(and reboot afterwards!)\n"));
446 }
447
448 static void request_fsck_afterwards(ext2_filsys fs)
449 {
450 static int requested = 0;
451
452 if (requested++)
453 return;
454 fsck_requested++;
455 fs->super->s_state &= ~EXT2_VALID_FS;
456 printf("\n%s\n", _(please_fsck));
457 if (mount_flags & EXT2_MF_READONLY)
458 printf("%s", _("(and reboot afterwards!)\n"));
459 }
460
461 static void convert_64bit(ext2_filsys fs, int direction)
462 {
463 if (!direction)
464 return;
465
466 /*
467 * Is resize2fs going to demand a fsck run? Might as well tell the
468 * user now.
469 */
470 if (!fsck_requested &&
471 ((fs->super->s_state & EXT2_ERROR_FS) ||
472 !(fs->super->s_state & EXT2_VALID_FS) ||
473 fs->super->s_lastcheck < fs->super->s_mtime))
474 request_fsck_afterwards(fs);
475 if (fsck_requested)
476 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
477 direction > 0 ? "-b" : "-s", fs->device_name);
478 else
479 fprintf(stderr, _("Please run `resize2fs %s %s"),
480 direction > 0 ? "-b" : "-s", fs->device_name);
481
482 if (undo_file)
483 fprintf(stderr, _(" -z \"%s\""), undo_file);
484 if (direction > 0)
485 fprintf(stderr, _("' to enable 64-bit mode.\n"));
486 else
487 fprintf(stderr, _("' to disable 64-bit mode.\n"));
488 }
489
490 /* Rewrite extents */
491 static errcode_t rewrite_extents(ext2_filsys fs, ext2_ino_t ino,
492 struct ext2_inode *inode)
493 {
494 ext2_extent_handle_t handle;
495 struct ext2fs_extent extent;
496 errcode_t errcode;
497 struct ext2_extent_info info;
498
499 if (!(inode->i_flags & EXT4_EXTENTS_FL) ||
500 !ext2fs_has_feature_metadata_csum(fs->super))
501 return 0;
502
503 errcode = ext2fs_extent_open(fs, ino, &handle);
504 if (errcode)
505 return errcode;
506
507 errcode = ext2fs_extent_get(handle, EXT2_EXTENT_ROOT, &extent);
508 if (errcode)
509 goto out;
510
511 do {
512 errcode = ext2fs_extent_get_info(handle, &info);
513 if (errcode)
514 break;
515
516 /*
517 * If this is the first extent in an extent block that we
518 * haven't visited, rewrite the extent to force the ETB
519 * checksum to be rewritten.
520 */
521 if (info.curr_entry == 1 && info.curr_level != 0 &&
522 !(extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)) {
523 errcode = ext2fs_extent_replace(handle, 0, &extent);
524 if (errcode)
525 break;
526 }
527
528 /* Skip to the end of a block of leaf nodes */
529 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
530 errcode = ext2fs_extent_get(handle,
531 EXT2_EXTENT_LAST_SIB,
532 &extent);
533 if (errcode)
534 break;
535 }
536
537 errcode = ext2fs_extent_get(handle, EXT2_EXTENT_NEXT, &extent);
538 } while (errcode == 0);
539
540 out:
541 /* Ok if we run off the end */
542 if (errcode == EXT2_ET_EXTENT_NO_NEXT)
543 errcode = 0;
544 ext2fs_extent_free(handle);
545 return errcode;
546 }
547
548 /*
549 * Rewrite directory blocks with checksums
550 */
551 struct rewrite_dir_context {
552 char *buf;
553 errcode_t errcode;
554 ext2_ino_t dir;
555 int is_htree;
556 };
557
558 static int rewrite_dir_block(ext2_filsys fs,
559 blk64_t *blocknr,
560 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
561 blk64_t ref_block EXT2FS_ATTR((unused)),
562 int ref_offset EXT2FS_ATTR((unused)),
563 void *priv_data)
564 {
565 struct ext2_dx_countlimit *dcl = NULL;
566 struct rewrite_dir_context *ctx = priv_data;
567 int dcl_offset, changed = 0;
568
569 ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
570 ctx->dir);
571 if (ctx->errcode)
572 return BLOCK_ABORT;
573
574 /* if htree node... */
575 if (ctx->is_htree)
576 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
577 &dcl, &dcl_offset);
578 if (dcl) {
579 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
580 /* Ensure limit is the max size */
581 int max_entries = (fs->blocksize - dcl_offset) /
582 sizeof(struct ext2_dx_entry);
583 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
584 changed = 1;
585 dcl->limit = ext2fs_cpu_to_le16(max_entries);
586 }
587 } else {
588 /* If htree block is full then rebuild the dir */
589 if (ext2fs_le16_to_cpu(dcl->count) ==
590 ext2fs_le16_to_cpu(dcl->limit)) {
591 request_dir_fsck_afterwards(fs);
592 return 0;
593 }
594 /*
595 * Ensure dcl->limit is small enough to leave room for
596 * the checksum tail.
597 */
598 int max_entries = (fs->blocksize - (dcl_offset +
599 sizeof(struct ext2_dx_tail))) /
600 sizeof(struct ext2_dx_entry);
601 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
602 dcl->limit = ext2fs_cpu_to_le16(max_entries);
603 /* Always rewrite checksum */
604 changed = 1;
605 }
606 } else {
607 unsigned int rec_len, name_size;
608 char *top = ctx->buf + fs->blocksize;
609 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
610 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
611
612 /* Find last and penultimate dirent */
613 while ((char *)de < top) {
614 penultimate_de = last_de;
615 last_de = de;
616 ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
617 if (!ctx->errcode && !rec_len)
618 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
619 if (ctx->errcode)
620 return BLOCK_ABORT;
621 de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
622 }
623 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
624 if (ctx->errcode)
625 return BLOCK_ABORT;
626 name_size = ext2fs_dirent_name_len(last_de);
627
628 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
629 if (!penultimate_de)
630 return 0;
631 if (last_de->inode ||
632 name_size ||
633 rec_len != sizeof(struct ext2_dir_entry_tail))
634 return 0;
635 /*
636 * The last dirent is unused and the right length to
637 * have stored a checksum. Erase it.
638 */
639 ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
640 &rec_len);
641 if (!rec_len)
642 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
643 if (ctx->errcode)
644 return BLOCK_ABORT;
645 ext2fs_set_rec_len(fs, rec_len +
646 sizeof(struct ext2_dir_entry_tail),
647 penultimate_de);
648 changed = 1;
649 } else {
650 unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
651 struct ext2_dir_entry_tail *t;
652
653 /*
654 * If the last dirent looks like the tail, just update
655 * the checksum.
656 */
657 if (!last_de->inode &&
658 rec_len == csum_size) {
659 t = (struct ext2_dir_entry_tail *)last_de;
660 t->det_reserved_name_len =
661 EXT2_DIR_NAME_LEN_CSUM;
662 changed = 1;
663 goto out;
664 }
665 if (name_size & 3)
666 name_size = (name_size & ~3) + 4;
667 /* If there's not enough space for the tail, e2fsck */
668 if (rec_len <= (8 + name_size + csum_size)) {
669 request_dir_fsck_afterwards(fs);
670 return 0;
671 }
672 /* Shorten that last de and insert the tail */
673 ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
674 t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
675 ext2fs_initialize_dirent_tail(fs, t);
676
677 /* Always update checksum */
678 changed = 1;
679 }
680 }
681
682 out:
683 if (!changed)
684 return 0;
685
686 ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
687 0, ctx->dir);
688 if (ctx->errcode)
689 return BLOCK_ABORT;
690
691 return 0;
692 }
693
694 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
695 struct ext2_inode *inode)
696 {
697 errcode_t retval;
698 struct rewrite_dir_context ctx;
699
700 retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
701 if (retval)
702 return retval;
703
704 ctx.is_htree = (inode->i_flags & EXT2_INDEX_FL);
705 ctx.dir = dir;
706 ctx.errcode = 0;
707 retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
708 BLOCK_FLAG_DATA_ONLY,
709 0, rewrite_dir_block, &ctx);
710
711 ext2fs_free_mem(&ctx.buf);
712 if (retval)
713 return retval;
714
715 return ctx.errcode;
716 }
717
718 /*
719 * Forcibly set checksums in all inodes.
720 */
721 static void rewrite_inodes(ext2_filsys fs)
722 {
723 int length = EXT2_INODE_SIZE(fs->super);
724 struct ext2_inode *inode, *zero;
725 char *ea_buf;
726 ext2_inode_scan scan;
727 errcode_t retval;
728 ext2_ino_t ino;
729 blk64_t file_acl_block;
730 int inode_dirty;
731
732 if (fs->super->s_creator_os != EXT2_OS_LINUX)
733 return;
734
735 retval = ext2fs_open_inode_scan(fs, 0, &scan);
736 if (retval) {
737 com_err("set_csum", retval, "while opening inode scan");
738 exit(1);
739 }
740
741 retval = ext2fs_get_mem(length, &inode);
742 if (retval) {
743 com_err("set_csum", retval, "while allocating memory");
744 exit(1);
745 }
746
747 retval = ext2fs_get_memzero(length, &zero);
748 if (retval) {
749 com_err("set_csum", retval, "while allocating memory");
750 exit(1);
751 }
752
753 retval = ext2fs_get_mem(fs->blocksize, &ea_buf);
754 if (retval) {
755 com_err("set_csum", retval, "while allocating memory");
756 exit(1);
757 }
758
759 do {
760 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
761 if (retval) {
762 com_err("set_csum", retval, "while getting next inode");
763 exit(1);
764 }
765 if (!ino)
766 break;
767 if (ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
768 inode_dirty = 1;
769 } else {
770 if (memcmp(inode, zero, length) != 0) {
771 memset(inode, 0, length);
772 inode_dirty = 1;
773 } else {
774 inode_dirty = 0;
775 }
776 }
777
778 if (inode_dirty) {
779 retval = ext2fs_write_inode_full(fs, ino, inode,
780 length);
781 if (retval) {
782 com_err("set_csum", retval, "while writing "
783 "inode");
784 exit(1);
785 }
786 }
787
788 retval = rewrite_extents(fs, ino, inode);
789 if (retval) {
790 com_err("rewrite_extents", retval,
791 "while rewriting extents");
792 exit(1);
793 }
794
795 if (LINUX_S_ISDIR(inode->i_mode) &&
796 ext2fs_inode_has_valid_blocks2(fs, inode)) {
797 retval = rewrite_directory(fs, ino, inode);
798 if (retval) {
799 com_err("rewrite_directory", retval,
800 "while rewriting directories");
801 exit(1);
802 }
803 }
804
805 file_acl_block = ext2fs_file_acl_block(fs, inode);
806 if (!file_acl_block)
807 continue;
808 retval = ext2fs_read_ext_attr3(fs, file_acl_block, ea_buf, ino);
809 if (retval) {
810 com_err("rewrite_eablock", retval,
811 "while rewriting extended attribute");
812 exit(1);
813 }
814 retval = ext2fs_write_ext_attr3(fs, file_acl_block, ea_buf,
815 ino);
816 if (retval) {
817 com_err("rewrite_eablock", retval,
818 "while rewriting extended attribute");
819 exit(1);
820 }
821 } while (ino);
822
823 ext2fs_free_mem(&zero);
824 ext2fs_free_mem(&inode);
825 ext2fs_free_mem(&ea_buf);
826 ext2fs_close_inode_scan(scan);
827 }
828
829 static void rewrite_metadata_checksums(ext2_filsys fs)
830 {
831 errcode_t retval;
832 dgrp_t i;
833
834 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
835 ext2fs_init_csum_seed(fs);
836 for (i = 0; i < fs->group_desc_count; i++)
837 ext2fs_group_desc_csum_set(fs, i);
838 retval = ext2fs_read_bitmaps(fs);
839 if (retval) {
840 com_err("rewrite_metadata_checksums", retval,
841 "while reading bitmaps");
842 exit(1);
843 }
844 rewrite_inodes(fs);
845 ext2fs_mark_ib_dirty(fs);
846 ext2fs_mark_bb_dirty(fs);
847 ext2fs_mmp_update2(fs, 1);
848 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
849 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
850 if (ext2fs_has_feature_metadata_csum(fs->super))
851 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
852 else
853 fs->super->s_checksum_type = 0;
854 ext2fs_mark_super_dirty(fs);
855 }
856
857 static void enable_uninit_bg(ext2_filsys fs)
858 {
859 struct ext2_group_desc *gd;
860 dgrp_t i;
861
862 for (i = 0; i < fs->group_desc_count; i++) {
863 gd = ext2fs_group_desc(fs, fs->group_desc, i);
864 gd->bg_itable_unused = 0;
865 gd->bg_flags = EXT2_BG_INODE_ZEROED;
866 ext2fs_group_desc_csum_set(fs, i);
867 }
868 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
869 }
870
871 static errcode_t zero_empty_inodes(ext2_filsys fs)
872 {
873 int length = EXT2_INODE_SIZE(fs->super);
874 struct ext2_inode *inode = NULL;
875 ext2_inode_scan scan;
876 errcode_t retval;
877 ext2_ino_t ino;
878
879 retval = ext2fs_open_inode_scan(fs, 0, &scan);
880 if (retval)
881 goto out;
882
883 retval = ext2fs_get_mem(length, &inode);
884 if (retval)
885 goto out;
886
887 do {
888 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
889 if (retval)
890 goto out;
891 if (!ino)
892 break;
893 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
894 memset(inode, 0, length);
895 retval = ext2fs_write_inode_full(fs, ino, inode,
896 length);
897 if (retval)
898 goto out;
899 }
900 } while (1);
901
902 out:
903 ext2fs_free_mem(&inode);
904 ext2fs_close_inode_scan(scan);
905 return retval;
906 }
907
908 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
909 {
910 struct ext2_group_desc *gd;
911 dgrp_t i;
912 errcode_t retval;
913 blk64_t b, c, d;
914
915 /* Load bitmaps to ensure that the uninit ones get written out */
916 fs->super->s_feature_ro_compat |= csum_feature_flag;
917 retval = ext2fs_read_bitmaps(fs);
918 fs->super->s_feature_ro_compat &= ~csum_feature_flag;
919 if (retval) {
920 com_err("disable_uninit_bg", retval,
921 "while reading bitmaps");
922 request_fsck_afterwards(fs);
923 return retval;
924 }
925 ext2fs_mark_ib_dirty(fs);
926 ext2fs_mark_bb_dirty(fs);
927
928 /* If we're only turning off uninit_bg, zero the inodes */
929 if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
930 retval = zero_empty_inodes(fs);
931 if (retval) {
932 com_err("disable_uninit_bg", retval,
933 "while zeroing unused inodes");
934 request_fsck_afterwards(fs);
935 return retval;
936 }
937 }
938
939 /* The bbitmap is zeroed; we must mark group metadata blocks in use */
940 for (i = 0; i < fs->group_desc_count; i++) {
941 b = ext2fs_block_bitmap_loc(fs, i);
942 ext2fs_mark_block_bitmap2(fs->block_map, b);
943 b = ext2fs_inode_bitmap_loc(fs, i);
944 ext2fs_mark_block_bitmap2(fs->block_map, b);
945
946 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
947 if (retval == 0 && b)
948 ext2fs_mark_block_bitmap2(fs->block_map, b);
949 if (retval == 0 && c)
950 ext2fs_mark_block_bitmap2(fs->block_map, c);
951 if (retval == 0 && d)
952 ext2fs_mark_block_bitmap2(fs->block_map, d);
953 if (retval) {
954 com_err("disable_uninit_bg", retval,
955 "while initializing block bitmaps");
956 request_fsck_afterwards(fs);
957 }
958
959 gd = ext2fs_group_desc(fs, fs->group_desc, i);
960 gd->bg_itable_unused = 0;
961 gd->bg_flags = 0;
962 ext2fs_group_desc_csum_set(fs, i);
963 }
964 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
965 ext2fs_mark_super_dirty(fs);
966
967 return 0;
968 }
969
970 static void
971 try_confirm_csum_seed_support(void)
972 {
973 if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK))
974 fputs(_("WARNING: Could not confirm kernel support for "
975 "metadata_csum_seed.\n This requires Linux >= "
976 "v4.4.\n"), stderr);
977 }
978
979 /*
980 * Update the feature set as provided by the user.
981 */
982 static int update_feature_set(ext2_filsys fs, char *features)
983 {
984 struct ext2_super_block *sb = fs->super;
985 __u32 old_features[3];
986 int type_err;
987 unsigned int mask_err;
988 errcode_t err;
989 enum quota_type qtype;
990
991 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
992 ((&sb->s_feature_compat)[(type)] & (mask)))
993 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
994 !((&sb->s_feature_compat)[(type)] & (mask)))
995 #define FEATURE_CHANGED(type, mask) ((mask) & \
996 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
997
998 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
999 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
1000 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
1001
1002 if (e2p_edit_feature2(features, &sb->s_feature_compat,
1003 ok_features, clear_ok_features,
1004 &type_err, &mask_err)) {
1005 if (!mask_err)
1006 fprintf(stderr,
1007 _("Invalid filesystem option set: %s\n"),
1008 features);
1009 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
1010 fprintf(stderr, _("Clearing filesystem feature '%s' "
1011 "not supported.\n"),
1012 e2p_feature2string(type_err &
1013 E2P_FEATURE_TYPE_MASK,
1014 mask_err));
1015 else
1016 fprintf(stderr, _("Setting filesystem feature '%s' "
1017 "not supported.\n"),
1018 e2p_feature2string(type_err, mask_err));
1019 return 1;
1020 }
1021
1022 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1023 if ((mount_flags & EXT2_MF_MOUNTED) &&
1024 !(mount_flags & EXT2_MF_READONLY)) {
1025 fputs(_("The has_journal feature may only be "
1026 "cleared when the filesystem is\n"
1027 "unmounted or mounted "
1028 "read-only.\n"), stderr);
1029 return 1;
1030 }
1031 if (ext2fs_has_feature_journal_needs_recovery(sb) &&
1032 f_flag < 2) {
1033 fputs(_("The needs_recovery flag is set. "
1034 "Please run e2fsck before clearing\n"
1035 "the has_journal flag.\n"), stderr);
1036 return 1;
1037 }
1038 if (sb->s_journal_inum) {
1039 if (remove_journal_inode(fs))
1040 return 1;
1041 }
1042 if (sb->s_journal_dev) {
1043 if (remove_journal_device(fs))
1044 return 1;
1045 }
1046 }
1047
1048 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1049 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1050 if (ext2fs_has_feature_meta_bg(sb)) {
1051 fputs(_("Setting filesystem feature 'sparse_super' "
1052 "not supported\nfor filesystems with "
1053 "the meta_bg feature enabled.\n"),
1054 stderr);
1055 return 1;
1056 }
1057 }
1058
1059 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1060 int error;
1061
1062 if ((mount_flags & EXT2_MF_MOUNTED) ||
1063 (mount_flags & EXT2_MF_READONLY)) {
1064 fputs(_("The multiple mount protection feature can't\n"
1065 "be set if the filesystem is mounted or\n"
1066 "read-only.\n"), stderr);
1067 return 1;
1068 }
1069
1070 error = ext2fs_mmp_init(fs);
1071 if (error) {
1072 fputs(_("\nError while enabling multiple mount "
1073 "protection feature."), stderr);
1074 return 1;
1075 }
1076
1077 /*
1078 * We want to update group desc with the new free blocks count
1079 */
1080 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1081
1082 printf(_("Multiple mount protection has been enabled "
1083 "with update interval %ds.\n"),
1084 sb->s_mmp_update_interval);
1085 }
1086
1087 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1088 int error;
1089
1090 if (mount_flags & EXT2_MF_READONLY) {
1091 fputs(_("The multiple mount protection feature cannot\n"
1092 "be disabled if the filesystem is readonly.\n"),
1093 stderr);
1094 return 1;
1095 }
1096
1097 error = ext2fs_read_bitmaps(fs);
1098 if (error) {
1099 fputs(_("Error while reading bitmaps\n"), stderr);
1100 return 1;
1101 }
1102
1103 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1104 if (error) {
1105 struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1106
1107 if (error == EXT2_ET_MMP_MAGIC_INVALID)
1108 printf(_("Magic number in MMP block does not "
1109 "match. expected: %x, actual: %x\n"),
1110 EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1111 else
1112 com_err(program_name, error, "%s",
1113 _("while reading MMP block."));
1114 goto mmp_error;
1115 }
1116
1117 /* We need to force out the group descriptors as well */
1118 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1119 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1120 mmp_error:
1121 sb->s_mmp_block = 0;
1122 sb->s_mmp_update_interval = 0;
1123 }
1124
1125 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1126 /*
1127 * If adding a journal flag, let the create journal
1128 * code below handle setting the flag and creating the
1129 * journal. We supply a default size if necessary.
1130 */
1131 if (!journal_size)
1132 journal_size = -1;
1133 ext2fs_clear_feature_journal(sb);
1134 }
1135
1136 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1137 if (!sb->s_def_hash_version)
1138 sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1139 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1140 uuid_generate((unsigned char *) sb->s_hash_seed);
1141 }
1142
1143 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1144 if (ext2fs_check_desc(fs)) {
1145 fputs(_("Clearing the flex_bg flag would "
1146 "cause the the filesystem to be\n"
1147 "inconsistent.\n"), stderr);
1148 return 1;
1149 }
1150 }
1151
1152 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1153 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1154 if ((mount_flags & EXT2_MF_MOUNTED) &&
1155 !(mount_flags & EXT2_MF_READONLY)) {
1156 fputs(_("The huge_file feature may only be "
1157 "cleared when the filesystem is\n"
1158 "unmounted or mounted "
1159 "read-only.\n"), stderr);
1160 return 1;
1161 }
1162 }
1163
1164 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1165 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1166 check_fsck_needed(fs,
1167 _("Enabling checksums could take some time."));
1168 if (mount_flags & EXT2_MF_MOUNTED) {
1169 fputs(_("Cannot enable metadata_csum on a mounted "
1170 "filesystem!\n"), stderr);
1171 exit(1);
1172 }
1173 if (!ext2fs_has_feature_extents(fs->super))
1174 printf("%s",
1175 _("Extents are not enabled. The file extent "
1176 "tree can be checksummed, whereas block maps "
1177 "cannot. Not enabling extents reduces the "
1178 "coverage of metadata checksumming. "
1179 "Re-run with -O extent to rectify.\n"));
1180 if (!ext2fs_has_feature_64bit(fs->super))
1181 printf("%s",
1182 _("64-bit filesystem support is not enabled. "
1183 "The larger fields afforded by this feature "
1184 "enable full-strength checksumming. "
1185 "Run resize2fs -b to rectify.\n"));
1186 rewrite_checksums = 1;
1187 /* metadata_csum supersedes uninit_bg */
1188 ext2fs_clear_feature_gdt_csum(fs->super);
1189
1190 /* if uninit_bg was previously off, rewrite group desc */
1191 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1192 EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1193 enable_uninit_bg(fs);
1194
1195 /*
1196 * Since metadata_csum supersedes uninit_bg, pretend like
1197 * uninit_bg has been off all along.
1198 */
1199 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1200 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1201 }
1202
1203 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1204 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1205 __u32 test_features[3];
1206
1207 check_fsck_needed(fs,
1208 _("Disabling checksums could take some time."));
1209 if (mount_flags & EXT2_MF_MOUNTED) {
1210 fputs(_("Cannot disable metadata_csum on a mounted "
1211 "filesystem!\n"), stderr);
1212 exit(1);
1213 }
1214 rewrite_checksums = 1;
1215
1216 /* Enable uninit_bg unless the user expressly turned it off */
1217 memcpy(test_features, old_features, sizeof(test_features));
1218 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1219 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1220 e2p_edit_feature2(features, test_features, ok_features,
1221 clear_ok_features, NULL, NULL);
1222 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1223 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1224 ext2fs_set_feature_gdt_csum(fs->super);
1225
1226 /*
1227 * If we're turning off metadata_csum and not turning on
1228 * uninit_bg, rewrite group desc.
1229 */
1230 if (!ext2fs_has_feature_gdt_csum(fs->super)) {
1231 err = disable_uninit_bg(fs,
1232 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1233 if (err)
1234 return 1;
1235 } else
1236 /*
1237 * metadata_csum previously provided uninit_bg, so if
1238 * we're also setting the uninit_bg feature bit,
1239 * pretend like it was previously enabled. Checksums
1240 * will be rewritten with crc16 later.
1241 */
1242 old_features[E2P_FEATURE_RO_INCOMPAT] |=
1243 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1244 fs->super->s_checksum_seed = 0;
1245 ext2fs_clear_feature_csum_seed(fs->super);
1246 }
1247
1248 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1249 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1250 /* Do not enable uninit_bg when metadata_csum enabled */
1251 if (ext2fs_has_feature_metadata_csum(fs->super))
1252 ext2fs_clear_feature_gdt_csum(fs->super);
1253 else
1254 enable_uninit_bg(fs);
1255 }
1256
1257 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1258 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1259 err = disable_uninit_bg(fs,
1260 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1261 if (err)
1262 return 1;
1263 }
1264
1265 /*
1266 * We don't actually toggle 64bit; resize2fs does that. But this
1267 * must come after the metadata_csum feature_on so that it won't
1268 * complain about the lack of 64bit.
1269 */
1270 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1271 EXT4_FEATURE_INCOMPAT_64BIT)) {
1272 if (mount_flags & EXT2_MF_MOUNTED) {
1273 fprintf(stderr, _("Cannot enable 64-bit mode "
1274 "while mounted!\n"));
1275 exit(1);
1276 }
1277 ext2fs_clear_feature_64bit(sb);
1278 feature_64bit = 1;
1279 }
1280 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1281 EXT4_FEATURE_INCOMPAT_64BIT)) {
1282 if (mount_flags & EXT2_MF_MOUNTED) {
1283 fprintf(stderr, _("Cannot disable 64-bit mode "
1284 "while mounted!\n"));
1285 exit(1);
1286 }
1287 ext2fs_set_feature_64bit(sb);
1288 feature_64bit = -1;
1289 }
1290
1291 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1292 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1293 /*
1294 * Set the Q_flag here and handle the quota options in the code
1295 * below.
1296 */
1297 if (!Q_flag) {
1298 Q_flag = 1;
1299 /* Enable usr/grp quota by default */
1300 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1301 if (qtype != PRJQUOTA)
1302 quota_enable[qtype] = QOPT_ENABLE;
1303 else
1304 quota_enable[qtype] = QOPT_DISABLE;
1305 }
1306 }
1307 ext2fs_clear_feature_quota(sb);
1308 }
1309
1310 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1311 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1312 if (!Q_flag && !ext2fs_has_feature_quota(sb))
1313 fputs(_("\nWarning: enabled project without quota together\n"),
1314 stderr);
1315 Q_flag = 1;
1316 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1317 }
1318
1319 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1320 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1321 /*
1322 * Set the Q_flag here and handle the quota options in the code
1323 * below.
1324 */
1325 if (Q_flag)
1326 fputs(_("\nWarning: '^quota' option overrides '-Q'"
1327 "arguments.\n"), stderr);
1328 Q_flag = 1;
1329 /* Disable all quota by default */
1330 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1331 quota_enable[qtype] = QOPT_DISABLE;
1332 }
1333
1334 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1335 fs->super->s_encrypt_algos[0] =
1336 EXT4_ENCRYPTION_MODE_AES_256_XTS;
1337 fs->super->s_encrypt_algos[1] =
1338 EXT4_ENCRYPTION_MODE_AES_256_CTS;
1339 }
1340
1341 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1342 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1343 if (!ext2fs_has_feature_metadata_csum(sb)) {
1344 fputs(_("Setting feature 'metadata_csum_seed' "
1345 "is only supported\non filesystems with "
1346 "the metadata_csum feature enabled.\n"),
1347 stderr);
1348 return 1;
1349 }
1350 try_confirm_csum_seed_support();
1351 fs->super->s_checksum_seed = fs->csum_seed;
1352 }
1353
1354 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1355 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1356 __le32 uuid_seed;
1357
1358 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1359 sizeof(fs->super->s_uuid));
1360 if (fs->super->s_checksum_seed != uuid_seed &&
1361 (mount_flags & EXT2_MF_MOUNTED)) {
1362 fputs(_("UUID has changed since enabling "
1363 "metadata_csum. Filesystem must be unmounted "
1364 "\nto safely rewrite all metadata to "
1365 "match the new UUID.\n"), stderr);
1366 return 1;
1367 }
1368
1369 rewrite_checksums = 1;
1370 }
1371
1372 if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1373 (sb->s_feature_compat || sb->s_feature_ro_compat ||
1374 sb->s_feature_incompat))
1375 ext2fs_update_dynamic_rev(fs);
1376
1377 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1378 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1379 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1380 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1381 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1382 EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1383 FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1384 EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1385 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1386 EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1387 request_fsck_afterwards(fs);
1388
1389 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1390 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1391 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1392 ext2fs_mark_super_dirty(fs);
1393
1394 return 0;
1395 }
1396
1397 /*
1398 * Add a journal to the filesystem.
1399 */
1400 static int add_journal(ext2_filsys fs)
1401 {
1402 unsigned long journal_blocks;
1403 errcode_t retval;
1404 ext2_filsys jfs;
1405 io_manager io_ptr;
1406
1407 if (ext2fs_has_feature_journal(fs->super)) {
1408 fputs(_("The filesystem already has a journal.\n"), stderr);
1409 goto err;
1410 }
1411 if (journal_device) {
1412 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1413 NULL))
1414 proceed_question(-1);
1415 check_mount(journal_device, 0, _("journal"));
1416 #ifdef CONFIG_TESTIO_DEBUG
1417 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1418 io_ptr = test_io_manager;
1419 test_io_backing_manager = unix_io_manager;
1420 } else
1421 #endif
1422 io_ptr = unix_io_manager;
1423 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1424 EXT2_FLAG_JOURNAL_DEV_OK, 0,
1425 fs->blocksize, io_ptr, &jfs);
1426 if (retval) {
1427 com_err(program_name, retval,
1428 _("\n\twhile trying to open journal on %s\n"),
1429 journal_device);
1430 goto err;
1431 }
1432 printf(_("Creating journal on device %s: "),
1433 journal_device);
1434 fflush(stdout);
1435
1436 retval = ext2fs_add_journal_device(fs, jfs);
1437 ext2fs_close_free(&jfs);
1438 if (retval) {
1439 com_err(program_name, retval,
1440 _("while adding filesystem to journal on %s"),
1441 journal_device);
1442 goto err;
1443 }
1444 fputs(_("done\n"), stdout);
1445 } else if (journal_size) {
1446 fputs(_("Creating journal inode: "), stdout);
1447 fflush(stdout);
1448 journal_blocks = figure_journal_size(journal_size, fs);
1449
1450 if (journal_location_string)
1451 journal_location =
1452 parse_num_blocks2(journal_location_string,
1453 fs->super->s_log_block_size);
1454 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
1455 journal_location,
1456 journal_flags);
1457 if (retval) {
1458 fprintf(stderr, "\n");
1459 com_err(program_name, retval, "%s",
1460 _("\n\twhile trying to create journal file"));
1461 return retval;
1462 } else
1463 fputs(_("done\n"), stdout);
1464 /*
1465 * If the filesystem wasn't mounted, we need to force
1466 * the block group descriptors out.
1467 */
1468 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1469 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1470 }
1471 print_check_message(fs->super->s_max_mnt_count,
1472 fs->super->s_checkinterval);
1473 return 0;
1474
1475 err:
1476 free(journal_device);
1477 return 1;
1478 }
1479
1480 static void handle_quota_options(ext2_filsys fs)
1481 {
1482 errcode_t retval;
1483 quota_ctx_t qctx;
1484 ext2_ino_t qf_ino;
1485 enum quota_type qtype;
1486 int enable = 0;
1487
1488 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1489 if (quota_enable[qtype] != 0)
1490 break;
1491 if (qtype == MAXQUOTAS)
1492 /* Nothing to do. */
1493 return;
1494
1495 retval = quota_init_context(&qctx, fs, QUOTA_ALL_BIT);
1496 if (retval) {
1497 com_err(program_name, retval,
1498 _("while initializing quota context in support library"));
1499 exit(1);
1500 }
1501 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1502 if (quota_enable[qtype] == QOPT_ENABLE) {
1503 enable = 1;
1504 break;
1505 }
1506 }
1507 if (enable)
1508 quota_compute_usage(qctx);
1509
1510 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1511 if (quota_enable[qtype] == QOPT_ENABLE &&
1512 *quota_sb_inump(fs->super, qtype) == 0) {
1513 if ((qf_ino = quota_file_exists(fs, qtype)) > 0) {
1514 retval = quota_update_limits(qctx, qf_ino,
1515 qtype);
1516 if (retval) {
1517 com_err(program_name, retval,
1518 _("while updating quota limits (%d)"),
1519 qtype);
1520 exit(1);
1521 }
1522 }
1523 retval = quota_write_inode(qctx, 1 << qtype);
1524 if (retval) {
1525 com_err(program_name, retval,
1526 _("while writing quota file (%d)"),
1527 qtype);
1528 exit(1);
1529 }
1530 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1531 retval = quota_remove_inode(fs, qtype);
1532 if (retval) {
1533 com_err(program_name, retval,
1534 _("while removing quota file (%d)"),
1535 qtype);
1536 exit(1);
1537 }
1538 }
1539 }
1540
1541 quota_release_context(&qctx);
1542
1543 if (enable) {
1544 ext2fs_set_feature_quota(fs->super);
1545 ext2fs_mark_super_dirty(fs);
1546 } else {
1547 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1548 if (*quota_sb_inump(fs->super, qtype) != 0)
1549 break;
1550 if (qtype == MAXQUOTAS) {
1551 fs->super->s_feature_ro_compat &=
1552 ~EXT4_FEATURE_RO_COMPAT_QUOTA;
1553 ext2fs_mark_super_dirty(fs);
1554 }
1555 }
1556
1557 return;
1558 }
1559
1560 static int option_handle_function(char *token)
1561 {
1562 if (strncmp(token, "usr", 3) == 0) {
1563 quota_enable[USRQUOTA] = QOPT_ENABLE;
1564 } else if (strncmp(token, "^usr", 4) == 0) {
1565 quota_enable[USRQUOTA] = QOPT_DISABLE;
1566 } else if (strncmp(token, "grp", 3) == 0) {
1567 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1568 } else if (strncmp(token, "^grp", 4) == 0) {
1569 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1570 } else if (strncmp(token, "prj", 3) == 0) {
1571 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1572 } else if (strncmp(token, "^prj", 4) == 0) {
1573 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1574 } else {
1575 fputs(_("\nBad quota options specified.\n\n"
1576 "Following valid quota options are available "
1577 "(pass by separating with comma):\n"
1578 "\t[^]usr[quota]\n"
1579 "\t[^]grp[quota]\n"
1580 "\t[^]prj[quota]\n"
1581 "\n\n"), stderr);
1582 return 1;
1583 }
1584 return 0;
1585 }
1586
1587 static void parse_e2label_options(int argc, char ** argv)
1588 {
1589 if ((argc < 2) || (argc > 3)) {
1590 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1591 exit(1);
1592 }
1593 io_options = strchr(argv[1], '?');
1594 if (io_options)
1595 *io_options++ = 0;
1596 device_name = blkid_get_devname(NULL, argv[1], NULL);
1597 if (!device_name) {
1598 com_err("e2label", 0, _("Unable to resolve '%s'"),
1599 argv[1]);
1600 exit(1);
1601 }
1602 open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
1603 if (argc == 3) {
1604 open_flag |= EXT2_FLAG_RW;
1605 L_flag = 1;
1606 new_label = argv[2];
1607 } else
1608 print_label++;
1609 }
1610
1611 static time_t parse_time(char *str)
1612 {
1613 struct tm ts;
1614
1615 if (strcmp(str, "now") == 0) {
1616 return (time(0));
1617 }
1618 memset(&ts, 0, sizeof(ts));
1619 #ifdef HAVE_STRPTIME
1620 strptime(str, "%Y%m%d%H%M%S", &ts);
1621 #else
1622 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1623 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1624 ts.tm_year -= 1900;
1625 ts.tm_mon -= 1;
1626 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1627 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1628 ts.tm_min > 59 || ts.tm_sec > 61)
1629 ts.tm_mday = 0;
1630 #endif
1631 if (ts.tm_mday == 0) {
1632 com_err(program_name, 0,
1633 _("Couldn't parse date/time specifier: %s"),
1634 str);
1635 usage();
1636 }
1637 ts.tm_isdst = -1;
1638 return (mktime(&ts));
1639 }
1640
1641 static void parse_tune2fs_options(int argc, char **argv)
1642 {
1643 int c;
1644 char *tmp;
1645 struct group *gr;
1646 struct passwd *pw;
1647 int ret;
1648 char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1649
1650 open_flag = 0;
1651 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1652 while ((c = getopt(argc, argv, optstring)) != EOF)
1653 switch (c) {
1654 case 'c':
1655 max_mount_count = strtol(optarg, &tmp, 0);
1656 if (*tmp || max_mount_count > 16000) {
1657 com_err(program_name, 0,
1658 _("bad mounts count - %s"),
1659 optarg);
1660 usage();
1661 }
1662 if (max_mount_count == 0)
1663 max_mount_count = -1;
1664 c_flag = 1;
1665 open_flag = EXT2_FLAG_RW;
1666 break;
1667 case 'C':
1668 mount_count = strtoul(optarg, &tmp, 0);
1669 if (*tmp || mount_count > 16000) {
1670 com_err(program_name, 0,
1671 _("bad mounts count - %s"),
1672 optarg);
1673 usage();
1674 }
1675 C_flag = 1;
1676 open_flag = EXT2_FLAG_RW;
1677 break;
1678 case 'e':
1679 if (strcmp(optarg, "continue") == 0)
1680 errors = EXT2_ERRORS_CONTINUE;
1681 else if (strcmp(optarg, "remount-ro") == 0)
1682 errors = EXT2_ERRORS_RO;
1683 else if (strcmp(optarg, "panic") == 0)
1684 errors = EXT2_ERRORS_PANIC;
1685 else {
1686 com_err(program_name, 0,
1687 _("bad error behavior - %s"),
1688 optarg);
1689 usage();
1690 }
1691 e_flag = 1;
1692 open_flag = EXT2_FLAG_RW;
1693 break;
1694 case 'E':
1695 extended_cmd = optarg;
1696 open_flag |= EXT2_FLAG_RW;
1697 break;
1698 case 'f': /* Force */
1699 f_flag++;
1700 break;
1701 case 'g':
1702 resgid = strtoul(optarg, &tmp, 0);
1703 if (*tmp) {
1704 gr = getgrnam(optarg);
1705 if (gr == NULL)
1706 tmp = optarg;
1707 else {
1708 resgid = gr->gr_gid;
1709 *tmp = 0;
1710 }
1711 }
1712 if (*tmp) {
1713 com_err(program_name, 0,
1714 _("bad gid/group name - %s"),
1715 optarg);
1716 usage();
1717 }
1718 g_flag = 1;
1719 open_flag = EXT2_FLAG_RW;
1720 break;
1721 case 'i':
1722 interval = strtoul(optarg, &tmp, 0);
1723 switch (*tmp) {
1724 case 's':
1725 tmp++;
1726 break;
1727 case '\0':
1728 case 'd':
1729 case 'D': /* days */
1730 interval *= 86400;
1731 if (*tmp != '\0')
1732 tmp++;
1733 break;
1734 case 'm':
1735 case 'M': /* months! */
1736 interval *= 86400 * 30;
1737 tmp++;
1738 break;
1739 case 'w':
1740 case 'W': /* weeks */
1741 interval *= 86400 * 7;
1742 tmp++;
1743 break;
1744 }
1745 if (*tmp) {
1746 com_err(program_name, 0,
1747 _("bad interval - %s"), optarg);
1748 usage();
1749 }
1750 i_flag = 1;
1751 open_flag = EXT2_FLAG_RW;
1752 break;
1753 case 'j':
1754 if (!journal_size)
1755 journal_size = -1;
1756 open_flag = EXT2_FLAG_RW;
1757 break;
1758 case 'J':
1759 parse_journal_opts(optarg);
1760 open_flag = EXT2_FLAG_RW;
1761 break;
1762 case 'l':
1763 l_flag = 1;
1764 break;
1765 case 'L':
1766 new_label = optarg;
1767 L_flag = 1;
1768 open_flag |= EXT2_FLAG_RW |
1769 EXT2_FLAG_JOURNAL_DEV_OK;
1770 break;
1771 case 'm':
1772 reserved_ratio = strtod(optarg, &tmp);
1773 if (*tmp || reserved_ratio > 50 ||
1774 reserved_ratio < 0) {
1775 com_err(program_name, 0,
1776 _("bad reserved block ratio - %s"),
1777 optarg);
1778 usage();
1779 }
1780 m_flag = 1;
1781 open_flag = EXT2_FLAG_RW;
1782 break;
1783 case 'M':
1784 new_last_mounted = optarg;
1785 M_flag = 1;
1786 open_flag = EXT2_FLAG_RW;
1787 break;
1788 case 'o':
1789 if (mntopts_cmd) {
1790 com_err(program_name, 0, "%s",
1791 _("-o may only be specified once"));
1792 usage();
1793 }
1794 mntopts_cmd = optarg;
1795 open_flag = EXT2_FLAG_RW;
1796 break;
1797 case 'O':
1798 if (features_cmd) {
1799 com_err(program_name, 0, "%s",
1800 _("-O may only be specified once"));
1801 usage();
1802 }
1803 features_cmd = optarg;
1804 open_flag = EXT2_FLAG_RW;
1805 break;
1806 case 'Q':
1807 Q_flag = 1;
1808 ret = parse_quota_opts(optarg, option_handle_function);
1809 if (ret)
1810 exit(1);
1811 open_flag = EXT2_FLAG_RW;
1812 break;
1813 case 'r':
1814 reserved_blocks = strtoul(optarg, &tmp, 0);
1815 if (*tmp) {
1816 com_err(program_name, 0,
1817 _("bad reserved blocks count - %s"),
1818 optarg);
1819 usage();
1820 }
1821 r_flag = 1;
1822 open_flag = EXT2_FLAG_RW;
1823 break;
1824 case 's': /* Deprecated */
1825 s_flag = atoi(optarg);
1826 open_flag = EXT2_FLAG_RW;
1827 break;
1828 case 'T':
1829 T_flag = 1;
1830 last_check_time = parse_time(optarg);
1831 open_flag = EXT2_FLAG_RW;
1832 break;
1833 case 'u':
1834 resuid = strtoul(optarg, &tmp, 0);
1835 if (*tmp) {
1836 pw = getpwnam(optarg);
1837 if (pw == NULL)
1838 tmp = optarg;
1839 else {
1840 resuid = pw->pw_uid;
1841 *tmp = 0;
1842 }
1843 }
1844 if (*tmp) {
1845 com_err(program_name, 0,
1846 _("bad uid/user name - %s"),
1847 optarg);
1848 usage();
1849 }
1850 u_flag = 1;
1851 open_flag = EXT2_FLAG_RW;
1852 break;
1853 case 'U':
1854 new_UUID = optarg;
1855 U_flag = 1;
1856 open_flag = EXT2_FLAG_RW |
1857 EXT2_FLAG_JOURNAL_DEV_OK;
1858 break;
1859 case 'I':
1860 new_inode_size = strtoul(optarg, &tmp, 0);
1861 if (*tmp) {
1862 com_err(program_name, 0,
1863 _("bad inode size - %s"),
1864 optarg);
1865 usage();
1866 }
1867 if (!((new_inode_size &
1868 (new_inode_size - 1)) == 0)) {
1869 com_err(program_name, 0,
1870 _("Inode size must be a "
1871 "power of two- %s"),
1872 optarg);
1873 usage();
1874 }
1875 open_flag = EXT2_FLAG_RW;
1876 I_flag = 1;
1877 break;
1878 case 'z':
1879 undo_file = optarg;
1880 break;
1881 default:
1882 usage();
1883 }
1884 if (optind < argc - 1 || optind == argc)
1885 usage();
1886 if (!open_flag && !l_flag)
1887 usage();
1888 io_options = strchr(argv[optind], '?');
1889 if (io_options)
1890 *io_options++ = 0;
1891 device_name = blkid_get_devname(NULL, argv[optind], NULL);
1892 if (!device_name) {
1893 com_err(program_name, 0, _("Unable to resolve '%s'"),
1894 argv[optind]);
1895 exit(1);
1896 }
1897 }
1898
1899 #ifdef CONFIG_BUILD_FINDFS
1900 void do_findfs(int argc, char **argv)
1901 {
1902 char *dev;
1903
1904 if ((argc != 2) ||
1905 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
1906 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
1907 exit(2);
1908 }
1909 dev = blkid_get_devname(NULL, argv[1], NULL);
1910 if (!dev) {
1911 com_err("findfs", 0, _("Unable to resolve '%s'"),
1912 argv[1]);
1913 exit(1);
1914 }
1915 puts(dev);
1916 exit(0);
1917 }
1918 #endif
1919
1920 static int parse_extended_opts(ext2_filsys fs, const char *opts)
1921 {
1922 char *buf, *token, *next, *p, *arg;
1923 int len, hash_alg;
1924 int r_usage = 0;
1925
1926 len = strlen(opts);
1927 buf = malloc(len+1);
1928 if (!buf) {
1929 fprintf(stderr, "%s",
1930 _("Couldn't allocate memory to parse options!\n"));
1931 return 1;
1932 }
1933 strcpy(buf, opts);
1934 for (token = buf; token && *token; token = next) {
1935 p = strchr(token, ',');
1936 next = 0;
1937 if (p) {
1938 *p = 0;
1939 next = p+1;
1940 }
1941 arg = strchr(token, '=');
1942 if (arg) {
1943 *arg = 0;
1944 arg++;
1945 }
1946 if (strcmp(token, "clear-mmp") == 0 ||
1947 strcmp(token, "clear_mmp") == 0) {
1948 clear_mmp = 1;
1949 } else if (strcmp(token, "mmp_update_interval") == 0) {
1950 unsigned long intv;
1951 if (!arg) {
1952 r_usage++;
1953 continue;
1954 }
1955 intv = strtoul(arg, &p, 0);
1956 if (*p) {
1957 fprintf(stderr,
1958 _("Invalid mmp_update_interval: %s\n"),
1959 arg);
1960 r_usage++;
1961 continue;
1962 }
1963 if (intv == 0) {
1964 intv = EXT4_MMP_UPDATE_INTERVAL;
1965 } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
1966 fprintf(stderr,
1967 _("mmp_update_interval too big: %lu\n"),
1968 intv);
1969 r_usage++;
1970 continue;
1971 }
1972 printf(P_("Setting multiple mount protection update "
1973 "interval to %lu second\n",
1974 "Setting multiple mount protection update "
1975 "interval to %lu seconds\n", intv),
1976 intv);
1977 fs->super->s_mmp_update_interval = intv;
1978 ext2fs_mark_super_dirty(fs);
1979 } else if (!strcmp(token, "test_fs")) {
1980 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
1981 printf("Setting test filesystem flag\n");
1982 ext2fs_mark_super_dirty(fs);
1983 } else if (!strcmp(token, "^test_fs")) {
1984 fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
1985 printf("Clearing test filesystem flag\n");
1986 ext2fs_mark_super_dirty(fs);
1987 } else if (strcmp(token, "stride") == 0) {
1988 if (!arg) {
1989 r_usage++;
1990 continue;
1991 }
1992 stride = strtoul(arg, &p, 0);
1993 if (*p) {
1994 fprintf(stderr,
1995 _("Invalid RAID stride: %s\n"),
1996 arg);
1997 r_usage++;
1998 continue;
1999 }
2000 stride_set = 1;
2001 } else if (strcmp(token, "stripe-width") == 0 ||
2002 strcmp(token, "stripe_width") == 0) {
2003 if (!arg) {
2004 r_usage++;
2005 continue;
2006 }
2007 stripe_width = strtoul(arg, &p, 0);
2008 if (*p) {
2009 fprintf(stderr,
2010 _("Invalid RAID stripe-width: %s\n"),
2011 arg);
2012 r_usage++;
2013 continue;
2014 }
2015 stripe_width_set = 1;
2016 } else if (strcmp(token, "hash_alg") == 0 ||
2017 strcmp(token, "hash-alg") == 0) {
2018 if (!arg) {
2019 r_usage++;
2020 continue;
2021 }
2022 hash_alg = e2p_string2hash(arg);
2023 if (hash_alg < 0) {
2024 fprintf(stderr,
2025 _("Invalid hash algorithm: %s\n"),
2026 arg);
2027 r_usage++;
2028 continue;
2029 }
2030 fs->super->s_def_hash_version = hash_alg;
2031 printf(_("Setting default hash algorithm "
2032 "to %s (%d)\n"),
2033 arg, hash_alg);
2034 ext2fs_mark_super_dirty(fs);
2035 } else if (!strcmp(token, "mount_opts")) {
2036 if (!arg) {
2037 r_usage++;
2038 continue;
2039 }
2040 if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
2041 fprintf(stderr,
2042 "Extended mount options too long\n");
2043 continue;
2044 }
2045 ext_mount_opts = strdup(arg);
2046 } else
2047 r_usage++;
2048 }
2049 if (r_usage) {
2050 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
2051 "Extended options are separated by commas, "
2052 "and may take an argument which\n"
2053 "\tis set off by an equals ('=') sign.\n\n"
2054 "Valid extended options are:\n"
2055 "\tclear_mmp\n"
2056 "\thash_alg=<hash algorithm>\n"
2057 "\tmount_opts=<extended default mount options>\n"
2058 "\tstride=<RAID per-disk chunk size in blocks>\n"
2059 "\tstripe_width=<RAID stride*data disks in blocks>\n"
2060 "\ttest_fs\n"
2061 "\t^test_fs\n"));
2062 free(buf);
2063 return 1;
2064 }
2065 free(buf);
2066
2067 return 0;
2068 }
2069
2070 /*
2071 * Fill in the block bitmap bmap with the information regarding the
2072 * blocks to be moved
2073 */
2074 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2075 ext2fs_block_bitmap bmap)
2076 {
2077 dgrp_t i;
2078 int retval;
2079 ext2_badblocks_list bb_list = 0;
2080 blk64_t j, needed_blocks = 0;
2081 blk64_t start_blk, end_blk;
2082
2083 retval = ext2fs_read_bb_inode(fs, &bb_list);
2084 if (retval)
2085 return retval;
2086
2087 for (i = 0; i < fs->group_desc_count; i++) {
2088 start_blk = ext2fs_inode_table_loc(fs, i) +
2089 fs->inode_blocks_per_group;
2090
2091 end_blk = ext2fs_inode_table_loc(fs, i) +
2092 new_ino_blks_per_grp;
2093
2094 for (j = start_blk; j < end_blk; j++) {
2095 if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2096 /*
2097 * IF the block is a bad block we fail
2098 */
2099 if (ext2fs_badblocks_list_test(bb_list, j)) {
2100 ext2fs_badblocks_list_free(bb_list);
2101 return ENOSPC;
2102 }
2103
2104 ext2fs_mark_block_bitmap2(bmap, j);
2105 } else {
2106 /*
2107 * We are going to use this block for
2108 * inode table. So mark them used.
2109 */
2110 ext2fs_mark_block_bitmap2(fs->block_map, j);
2111 }
2112 }
2113 needed_blocks += end_blk - start_blk;
2114 }
2115
2116 ext2fs_badblocks_list_free(bb_list);
2117 if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2118 return ENOSPC;
2119
2120 return 0;
2121 }
2122
2123 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2124 {
2125 dgrp_t group;
2126 group = ext2fs_group_of_blk2(fs, blk);
2127 if (ext2fs_block_bitmap_loc(fs, group) == blk)
2128 return 1;
2129 if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2130 return 1;
2131 return 0;
2132 }
2133
2134 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2135 {
2136 blk64_t start_blk, end_blk;
2137 start_blk = fs->super->s_first_data_block +
2138 EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2139 /*
2140 * We cannot get new block beyond end_blk for for the last block group
2141 * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2142 */
2143 end_blk = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2144 if (blk >= start_blk && blk <= end_blk)
2145 return 1;
2146 return 0;
2147 }
2148
2149 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2150 {
2151
2152 char *buf;
2153 dgrp_t group = 0;
2154 errcode_t retval;
2155 int meta_data = 0;
2156 blk64_t blk, new_blk, goal;
2157 struct blk_move *bmv;
2158
2159 retval = ext2fs_get_mem(fs->blocksize, &buf);
2160 if (retval)
2161 return retval;
2162
2163 for (new_blk = blk = fs->super->s_first_data_block;
2164 blk < ext2fs_blocks_count(fs->super); blk++) {
2165 if (!ext2fs_test_block_bitmap2(bmap, blk))
2166 continue;
2167
2168 if (ext2fs_is_meta_block(fs, blk)) {
2169 /*
2170 * If the block is mapping a fs meta data block
2171 * like group desc/block bitmap/inode bitmap. We
2172 * should find a block in the same group and fix
2173 * the respective fs metadata pointers. Otherwise
2174 * fail
2175 */
2176 group = ext2fs_group_of_blk2(fs, blk);
2177 goal = ext2fs_group_first_block2(fs, group);
2178 meta_data = 1;
2179
2180 } else {
2181 goal = new_blk;
2182 }
2183 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2184 if (retval)
2185 goto err_out;
2186
2187 /* new fs meta data block should be in the same group */
2188 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2189 retval = ENOSPC;
2190 goto err_out;
2191 }
2192
2193 /* Mark this block as allocated */
2194 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2195
2196 /* Add it to block move list */
2197 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2198 if (retval)
2199 goto err_out;
2200
2201 bmv->old_loc = blk;
2202 bmv->new_loc = new_blk;
2203
2204 list_add(&(bmv->list), &blk_move_list);
2205
2206 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2207 if (retval)
2208 goto err_out;
2209
2210 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2211 if (retval)
2212 goto err_out;
2213 }
2214
2215 err_out:
2216 ext2fs_free_mem(&buf);
2217 return retval;
2218 }
2219
2220 static blk64_t translate_block(blk64_t blk)
2221 {
2222 struct list_head *entry;
2223 struct blk_move *bmv;
2224
2225 list_for_each(entry, &blk_move_list) {
2226 bmv = list_entry(entry, struct blk_move, list);
2227 if (bmv->old_loc == blk)
2228 return bmv->new_loc;
2229 }
2230
2231 return 0;
2232 }
2233
2234 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2235 blk64_t *block_nr,
2236 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2237 blk64_t ref_block EXT2FS_ATTR((unused)),
2238 int ref_offset EXT2FS_ATTR((unused)),
2239 void *priv_data)
2240 {
2241 int ret = 0;
2242 blk64_t new_blk;
2243 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2244
2245 if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2246 return 0;
2247 new_blk = translate_block(*block_nr);
2248 if (new_blk) {
2249 *block_nr = new_blk;
2250 /*
2251 * This will force the ext2fs_write_inode in the iterator
2252 */
2253 ret |= BLOCK_CHANGED;
2254 }
2255
2256 return ret;
2257 }
2258
2259 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2260 {
2261 errcode_t retval = 0;
2262 ext2_ino_t ino;
2263 blk64_t blk;
2264 char *block_buf = 0;
2265 struct ext2_inode inode;
2266 ext2_inode_scan scan = NULL;
2267
2268 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2269 if (retval)
2270 return retval;
2271
2272 retval = ext2fs_open_inode_scan(fs, 0, &scan);
2273 if (retval)
2274 goto err_out;
2275
2276 while (1) {
2277 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2278 if (retval)
2279 goto err_out;
2280
2281 if (!ino)
2282 break;
2283
2284 if (inode.i_links_count == 0)
2285 continue; /* inode not in use */
2286
2287 /* FIXME!!
2288 * If we end up modifying the journal inode
2289 * the sb->s_jnl_blocks will differ. But a
2290 * subsequent e2fsck fixes that.
2291 * Do we need to fix this ??
2292 */
2293
2294 if (ext2fs_file_acl_block(fs, &inode) &&
2295 ext2fs_test_block_bitmap2(bmap,
2296 ext2fs_file_acl_block(fs, &inode))) {
2297 blk = translate_block(ext2fs_file_acl_block(fs,
2298 &inode));
2299 if (!blk)
2300 continue;
2301
2302 ext2fs_file_acl_block_set(fs, &inode, blk);
2303
2304 /*
2305 * Write the inode to disk so that inode table
2306 * resizing can work
2307 */
2308 retval = ext2fs_write_inode(fs, ino, &inode);
2309 if (retval)
2310 goto err_out;
2311 }
2312
2313 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2314 continue;
2315
2316 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2317 process_block, bmap);
2318 if (retval)
2319 goto err_out;
2320
2321 }
2322
2323 err_out:
2324 ext2fs_free_mem(&block_buf);
2325 ext2fs_close_inode_scan(scan);
2326
2327 return retval;
2328 }
2329
2330 /*
2331 * We need to scan for inode and block bitmaps that may need to be
2332 * moved. This can take place if the filesystem was formatted for
2333 * RAID arrays using the mke2fs's extended option "stride".
2334 */
2335 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2336 {
2337 dgrp_t i;
2338 blk64_t blk, new_blk;
2339
2340 for (i = 0; i < fs->group_desc_count; i++) {
2341 blk = ext2fs_block_bitmap_loc(fs, i);
2342 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2343 new_blk = translate_block(blk);
2344 if (!new_blk)
2345 continue;
2346 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2347 }
2348
2349 blk = ext2fs_inode_bitmap_loc(fs, i);
2350 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2351 new_blk = translate_block(blk);
2352 if (!new_blk)
2353 continue;
2354 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2355 }
2356 }
2357 return 0;
2358 }
2359
2360 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2361 {
2362 dgrp_t i;
2363 blk64_t blk;
2364 errcode_t retval;
2365 int new_ino_blks_per_grp;
2366 unsigned int j;
2367 char *old_itable = NULL, *new_itable = NULL;
2368 char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2369 unsigned long old_ino_size;
2370 int old_itable_size, new_itable_size;
2371
2372 old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2373 old_ino_size = EXT2_INODE_SIZE(fs->super);
2374
2375 new_ino_blks_per_grp = ext2fs_div_ceil(
2376 EXT2_INODES_PER_GROUP(fs->super) *
2377 new_ino_size,
2378 fs->blocksize);
2379
2380 new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2381
2382 retval = ext2fs_get_mem(old_itable_size, &old_itable);
2383 if (retval)
2384 return retval;
2385
2386 retval = ext2fs_get_mem(new_itable_size, &new_itable);
2387 if (retval)
2388 goto err_out;
2389
2390 tmp_old_itable = old_itable;
2391 tmp_new_itable = new_itable;
2392
2393 for (i = 0; i < fs->group_desc_count; i++) {
2394 blk = ext2fs_inode_table_loc(fs, i);
2395 retval = io_channel_read_blk64(fs->io, blk,
2396 fs->inode_blocks_per_group, old_itable);
2397 if (retval)
2398 goto err_out;
2399
2400 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2401 memcpy(new_itable, old_itable, old_ino_size);
2402
2403 memset(new_itable+old_ino_size, 0,
2404 new_ino_size - old_ino_size);
2405
2406 new_itable += new_ino_size;
2407 old_itable += old_ino_size;
2408 }
2409
2410 /* reset the pointer */
2411 old_itable = tmp_old_itable;
2412 new_itable = tmp_new_itable;
2413
2414 retval = io_channel_write_blk64(fs->io, blk,
2415 new_ino_blks_per_grp, new_itable);
2416 if (retval)
2417 goto err_out;
2418 }
2419
2420 /* Update the meta data */
2421 fs->inode_blocks_per_group = new_ino_blks_per_grp;
2422 ext2fs_free_inode_cache(fs->icache);
2423 fs->icache = 0;
2424 fs->super->s_inode_size = new_ino_size;
2425
2426 err_out:
2427 if (old_itable)
2428 ext2fs_free_mem(&old_itable);
2429
2430 if (new_itable)
2431 ext2fs_free_mem(&new_itable);
2432
2433 return retval;
2434 }
2435
2436 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
2437 {
2438 blk64_t blk;
2439 ext2_ino_t ino;
2440 unsigned int group = 0;
2441 unsigned int count = 0;
2442 int total_free = 0;
2443 int group_free = 0;
2444
2445 /*
2446 * First calculate the block statistics
2447 */
2448 for (blk = fs->super->s_first_data_block;
2449 blk < ext2fs_blocks_count(fs->super); blk++) {
2450 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
2451 group_free++;
2452 total_free++;
2453 }
2454 count++;
2455 if ((count == fs->super->s_blocks_per_group) ||
2456 (blk == ext2fs_blocks_count(fs->super)-1)) {
2457 ext2fs_bg_free_blocks_count_set(fs, group++,
2458 group_free);
2459 count = 0;
2460 group_free = 0;
2461 }
2462 }
2463 total_free = EXT2FS_C2B(fs, total_free);
2464 ext2fs_free_blocks_count_set(fs->super, total_free);
2465
2466 /*
2467 * Next, calculate the inode statistics
2468 */
2469 group_free = 0;
2470 total_free = 0;
2471 count = 0;
2472 group = 0;
2473
2474 /* Protect loop from wrap-around if s_inodes_count maxed */
2475 for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
2476 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
2477 group_free++;
2478 total_free++;
2479 }
2480 count++;
2481 if ((count == fs->super->s_inodes_per_group) ||
2482 (ino == fs->super->s_inodes_count)) {
2483 ext2fs_bg_free_inodes_count_set(fs, group++,
2484 group_free);
2485 count = 0;
2486 group_free = 0;
2487 }
2488 }
2489 fs->super->s_free_inodes_count = total_free;
2490 ext2fs_mark_super_dirty(fs);
2491 return 0;
2492 }
2493
2494 #define list_for_each_safe(pos, pnext, head) \
2495 for (pos = (head)->next, pnext = pos->next; pos != (head); \
2496 pos = pnext, pnext = pos->next)
2497
2498 static void free_blk_move_list(void)
2499 {
2500 struct list_head *entry, *tmp;
2501 struct blk_move *bmv;
2502
2503 list_for_each_safe(entry, tmp, &blk_move_list) {
2504 bmv = list_entry(entry, struct blk_move, list);
2505 list_del(entry);
2506 ext2fs_free_mem(&bmv);
2507 }
2508 return;
2509 }
2510
2511 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2512 {
2513 errcode_t retval;
2514 int new_ino_blks_per_grp;
2515 ext2fs_block_bitmap bmap;
2516
2517 retval = ext2fs_read_inode_bitmap(fs);
2518 if (retval) {
2519 fputs(_("Failed to read inode bitmap\n"), stderr);
2520 return retval;
2521 }
2522 retval = ext2fs_read_block_bitmap(fs);
2523 if (retval) {
2524 fputs(_("Failed to read block bitmap\n"), stderr);
2525 return retval;
2526 }
2527 INIT_LIST_HEAD(&blk_move_list);
2528
2529
2530 new_ino_blks_per_grp = ext2fs_div_ceil(
2531 EXT2_INODES_PER_GROUP(fs->super)*
2532 new_size,
2533 fs->blocksize);
2534
2535 /* We may change the file system.
2536 * Mark the file system as invalid so that
2537 * the user is prompted to run fsck.
2538 */
2539 fs->super->s_state &= ~EXT2_VALID_FS;
2540
2541 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2542 &bmap);
2543 if (retval) {
2544 fputs(_("Failed to allocate block bitmap when "
2545 "increasing inode size\n"), stderr);
2546 return retval;
2547 }
2548 retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2549 if (retval) {
2550 fputs(_("Not enough space to increase inode size \n"), stderr);
2551 goto err_out;
2552 }
2553 retval = move_block(fs, bmap);
2554 if (retval) {
2555 fputs(_("Failed to relocate blocks during inode resize \n"),
2556 stderr);
2557 goto err_out;
2558 }
2559 retval = inode_scan_and_fix(fs, bmap);
2560 if (retval)
2561 goto err_out_undo;
2562
2563 retval = group_desc_scan_and_fix(fs, bmap);
2564 if (retval)
2565 goto err_out_undo;
2566
2567 retval = expand_inode_table(fs, new_size);
2568 if (retval)
2569 goto err_out_undo;
2570
2571 ext2fs_calculate_summary_stats(fs);
2572
2573 fs->super->s_state |= EXT2_VALID_FS;
2574 /* mark super block and block bitmap as dirty */
2575 ext2fs_mark_super_dirty(fs);
2576 ext2fs_mark_bb_dirty(fs);
2577
2578 err_out:
2579 free_blk_move_list();
2580 ext2fs_free_block_bitmap(bmap);
2581
2582 return retval;
2583
2584 err_out_undo:
2585 free_blk_move_list();
2586 ext2fs_free_block_bitmap(bmap);
2587 fputs(_("Error in resizing the inode size.\n"
2588 "Run e2undo to undo the "
2589 "file system changes. \n"), stderr);
2590
2591 return retval;
2592 }
2593
2594 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2595 {
2596 errcode_t retval = 0;
2597 const char *tdb_dir;
2598 char *tdb_file = NULL;
2599 char *dev_name, *tmp_name;
2600
2601 /* (re)open a specific undo file */
2602 if (undo_file && undo_file[0] != 0) {
2603 retval = set_undo_io_backing_manager(*io_ptr);
2604 if (retval)
2605 goto err;
2606 *io_ptr = undo_io_manager;
2607 retval = set_undo_io_backup_file(undo_file);
2608 if (retval)
2609 goto err;
2610 printf(_("Overwriting existing filesystem; this can be undone "
2611 "using the command:\n"
2612 " e2undo %s %s\n\n"),
2613 undo_file, name);
2614 return retval;
2615 }
2616
2617 /*
2618 * Configuration via a conf file would be
2619 * nice
2620 */
2621 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2622 if (!tdb_dir)
2623 tdb_dir = "/var/lib/e2fsprogs";
2624
2625 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2626 access(tdb_dir, W_OK))
2627 return 0;
2628
2629 tmp_name = strdup(name);
2630 if (!tmp_name)
2631 goto errout;
2632 dev_name = basename(tmp_name);
2633 tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2634 if (!tdb_file) {
2635 free(tmp_name);
2636 goto errout;
2637 }
2638 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2639 free(tmp_name);
2640
2641 if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2642 retval = errno;
2643 com_err(program_name, retval,
2644 _("while trying to delete %s"), tdb_file);
2645 goto errout;
2646 }
2647
2648 retval = set_undo_io_backing_manager(*io_ptr);
2649 if (retval)
2650 goto errout;
2651 *io_ptr = undo_io_manager;
2652 retval = set_undo_io_backup_file(tdb_file);
2653 if (retval)
2654 goto errout;
2655 printf(_("Overwriting existing filesystem; this can be undone "
2656 "using the command:\n"
2657 " e2undo %s %s\n\n"),
2658 tdb_file, name);
2659
2660 free(tdb_file);
2661 return 0;
2662 errout:
2663 free(tdb_file);
2664 err:
2665 com_err("tune2fs", retval, "while trying to setup undo file\n");
2666 return retval;
2667 }
2668
2669 static int
2670 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2671 {
2672 int retval, nr_users, start;
2673 journal_superblock_t *jsb;
2674 ext2_filsys jfs;
2675 __u8 *j_uuid;
2676 char *journal_path;
2677 char uuid[UUID_STR_SIZE];
2678 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2679
2680 if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
2681 return 0;
2682
2683 uuid_unparse(sb->s_journal_uuid, uuid);
2684 journal_path = blkid_get_devname(NULL, "UUID", uuid);
2685 if (!journal_path)
2686 return 0;
2687
2688 retval = ext2fs_open2(journal_path, io_options,
2689 EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2690 0, 0, unix_io_manager, &jfs);
2691 if (retval) {
2692 com_err(program_name, retval,
2693 _("while trying to open %s"),
2694 journal_path);
2695 return retval;
2696 }
2697
2698 retval = get_journal_sb(jfs, buf);
2699 if (retval != 0) {
2700 if (retval == EXT2_ET_UNSUPP_FEATURE)
2701 fprintf(stderr, _("%s is not a journal device.\n"),
2702 journal_path);
2703 return retval;
2704 }
2705
2706 jsb = (journal_superblock_t *) buf;
2707 /* Find the filesystem UUID */
2708 nr_users = ntohl(jsb->s_nr_users);
2709
2710 j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2711 if (j_uuid == NULL) {
2712 fputs(_("Filesystem's UUID not found on journal device.\n"),
2713 stderr);
2714 return EXT2_ET_LOAD_EXT_JOURNAL;
2715 }
2716
2717 memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2718
2719 start = ext2fs_journal_sb_start(jfs->blocksize);
2720 /* Write back the journal superblock */
2721 retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2722 if (retval != 0) {
2723 com_err(program_name, retval,
2724 "while writing journal superblock.");
2725 return retval;
2726 }
2727
2728 ext2fs_close(jfs);
2729
2730 return 0;
2731 }
2732
2733 #ifndef BUILD_AS_LIB
2734 int main(int argc, char **argv)
2735 #else
2736 int tune2fs_main(int argc, char **argv)
2737 #endif /* BUILD_AS_LIB */
2738 {
2739 errcode_t retval;
2740 ext2_filsys fs;
2741 struct ext2_super_block *sb;
2742 io_manager io_ptr, io_ptr_orig = NULL;
2743 int rc = 0;
2744 char default_undo_file[1] = { 0 };
2745
2746 #ifdef ENABLE_NLS
2747 setlocale(LC_MESSAGES, "");
2748 setlocale(LC_CTYPE, "");
2749 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2750 textdomain(NLS_CAT_NAME);
2751 set_com_err_gettext(gettext);
2752 #endif
2753 if (argc && *argv)
2754 program_name = *argv;
2755 add_error_table(&et_ext2_error_table);
2756
2757 #ifdef CONFIG_BUILD_FINDFS
2758 if (strcmp(get_progname(argv[0]), "findfs") == 0)
2759 do_findfs(argc, argv);
2760 #endif
2761 if (strcmp(get_progname(argv[0]), "e2label") == 0)
2762 parse_e2label_options(argc, argv);
2763 else
2764 parse_tune2fs_options(argc, argv);
2765
2766 #ifdef CONFIG_TESTIO_DEBUG
2767 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2768 io_ptr = test_io_manager;
2769 test_io_backing_manager = unix_io_manager;
2770 } else
2771 #endif
2772 io_ptr = unix_io_manager;
2773
2774 retry_open:
2775 if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2776 open_flag |= EXT2_FLAG_SKIP_MMP;
2777
2778 open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_JOURNAL_DEV_OK;
2779
2780 /* keep the filesystem struct around to dump MMP data */
2781 open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2782
2783 retval = ext2fs_open2(device_name, io_options, open_flag,
2784 0, 0, io_ptr, &fs);
2785 if (retval) {
2786 com_err(program_name, retval,
2787 _("while trying to open %s"),
2788 device_name);
2789 if (retval == EXT2_ET_MMP_FSCK_ON ||
2790 retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2791 dump_mmp_msg(fs->mmp_buf,
2792 _("If you are sure the filesystem "
2793 "is not in use on any node, run:\n"
2794 "'tune2fs -f -E clear_mmp {device}'\n"));
2795 else if (retval == EXT2_ET_MMP_FAILED)
2796 dump_mmp_msg(fs->mmp_buf, NULL);
2797 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2798 fprintf(stderr,
2799 _("MMP block magic is bad. Try to fix it by "
2800 "running:\n'e2fsck -f %s'\n"), device_name);
2801 else if (retval == EXT2_ET_BAD_MAGIC)
2802 check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2803 else if (retval != EXT2_ET_MMP_FAILED)
2804 fprintf(stderr, "%s",
2805 _("Couldn't find valid filesystem superblock.\n"));
2806
2807 ext2fs_free(fs);
2808 exit(1);
2809 }
2810 if (ext2fs_has_feature_journal_dev(fs->super)) {
2811 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
2812 ext2fs_free(fs);
2813 exit(1);
2814 }
2815 fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
2816
2817 if (I_flag) {
2818 /*
2819 * Check the inode size is right so we can issue an
2820 * error message and bail before setting up the tdb
2821 * file.
2822 */
2823 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
2824 fprintf(stderr, _("The inode size is already %lu\n"),
2825 new_inode_size);
2826 rc = 1;
2827 goto closefs;
2828 }
2829 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
2830 fprintf(stderr, "%s",
2831 _("Shrinking inode size is not supported\n"));
2832 rc = 1;
2833 goto closefs;
2834 }
2835 if (new_inode_size > fs->blocksize) {
2836 fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
2837 new_inode_size, fs->blocksize);
2838 rc = 1;
2839 goto closefs;
2840 }
2841 check_fsck_needed(fs,
2842 _("Resizing inodes could take some time."));
2843 /*
2844 * If inode resize is requested use the
2845 * Undo I/O manager
2846 */
2847 undo_file = default_undo_file;
2848 }
2849
2850 /* Set up an undo file */
2851 if (undo_file && io_ptr_orig == NULL) {
2852 io_ptr_orig = io_ptr;
2853 retval = tune2fs_setup_tdb(device_name, &io_ptr);
2854 if (retval) {
2855 rc = 1;
2856 goto closefs;
2857 }
2858 if (io_ptr != io_ptr_orig) {
2859 ext2fs_close_free(&fs);
2860 goto retry_open;
2861 }
2862 }
2863
2864 sb = fs->super;
2865 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2866
2867 if (print_label) {
2868 /* For e2label emulation */
2869 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
2870 sb->s_volume_name);
2871 remove_error_table(&et_ext2_error_table);
2872 goto closefs;
2873 }
2874
2875 retval = ext2fs_check_if_mounted(device_name, &mount_flags);
2876 if (retval) {
2877 com_err("ext2fs_check_if_mount", retval,
2878 _("while determining whether %s is mounted."),
2879 device_name);
2880 rc = 1;
2881 goto closefs;
2882 }
2883 /* Normally we only need to write out the superblock */
2884 fs->flags |= EXT2_FLAG_SUPER_ONLY;
2885
2886 if (c_flag) {
2887 sb->s_max_mnt_count = max_mount_count;
2888 ext2fs_mark_super_dirty(fs);
2889 printf(_("Setting maximal mount count to %d\n"),
2890 max_mount_count);
2891 }
2892 if (C_flag) {
2893 sb->s_mnt_count = mount_count;
2894 ext2fs_mark_super_dirty(fs);
2895 printf(_("Setting current mount count to %d\n"), mount_count);
2896 }
2897 if (e_flag) {
2898 sb->s_errors = errors;
2899 ext2fs_mark_super_dirty(fs);
2900 printf(_("Setting error behavior to %d\n"), errors);
2901 }
2902 if (g_flag) {
2903 sb->s_def_resgid = resgid;
2904 ext2fs_mark_super_dirty(fs);
2905 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
2906 }
2907 if (i_flag) {
2908 if ((unsigned long long)interval >= (1ULL << 32)) {
2909 com_err(program_name, 0,
2910 _("interval between checks is too big (%lu)"),
2911 interval);
2912 rc = 1;
2913 goto closefs;
2914 }
2915 sb->s_checkinterval = interval;
2916 ext2fs_mark_super_dirty(fs);
2917 printf(_("Setting interval between checks to %lu seconds\n"),
2918 interval);
2919 }
2920 if (m_flag) {
2921 ext2fs_r_blocks_count_set(sb, reserved_ratio *
2922 ext2fs_blocks_count(sb) / 100.0);
2923 ext2fs_mark_super_dirty(fs);
2924 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
2925 reserved_ratio, ext2fs_r_blocks_count(sb));
2926 }
2927 if (r_flag) {
2928 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
2929 com_err(program_name, 0,
2930 _("reserved blocks count is too big (%llu)"),
2931 reserved_blocks);
2932 rc = 1;
2933 goto closefs;
2934 }
2935 ext2fs_r_blocks_count_set(sb, reserved_blocks);
2936 ext2fs_mark_super_dirty(fs);
2937 printf(_("Setting reserved blocks count to %llu\n"),
2938 reserved_blocks);
2939 }
2940 if (s_flag == 1) {
2941 if (ext2fs_has_feature_sparse_super(sb)) {
2942 fputs(_("\nThe filesystem already has sparse "
2943 "superblocks.\n"), stderr);
2944 } else if (ext2fs_has_feature_meta_bg(sb)) {
2945 fputs(_("\nSetting the sparse superblock flag not "
2946 "supported\nfor filesystems with "
2947 "the meta_bg feature enabled.\n"),
2948 stderr);
2949 rc = 1;
2950 goto closefs;
2951 } else {
2952 ext2fs_set_feature_sparse_super(sb);
2953 sb->s_state &= ~EXT2_VALID_FS;
2954 ext2fs_mark_super_dirty(fs);
2955 printf(_("\nSparse superblock flag set. %s"),
2956 _(please_fsck));
2957 }
2958 }
2959 if (s_flag == 0) {
2960 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
2961 stderr);
2962 rc = 1;
2963 goto closefs;
2964 }
2965 if (T_flag) {
2966 sb->s_lastcheck = last_check_time;
2967 ext2fs_mark_super_dirty(fs);
2968 printf(_("Setting time filesystem last checked to %s\n"),
2969 ctime(&last_check_time));
2970 }
2971 if (u_flag) {
2972 sb->s_def_resuid = resuid;
2973 ext2fs_mark_super_dirty(fs);
2974 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
2975 }
2976 if (L_flag) {
2977 if (strlen(new_label) > sizeof(sb->s_volume_name))
2978 fputs(_("Warning: label too long, truncating.\n"),
2979 stderr);
2980 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
2981 strncpy(sb->s_volume_name, new_label,
2982 sizeof(sb->s_volume_name));
2983 ext2fs_mark_super_dirty(fs);
2984 }
2985 if (M_flag) {
2986 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
2987 strncpy(sb->s_last_mounted, new_last_mounted,
2988 sizeof(sb->s_last_mounted));
2989 ext2fs_mark_super_dirty(fs);
2990 }
2991 if (mntopts_cmd) {
2992 rc = update_mntopts(fs, mntopts_cmd);
2993 if (rc)
2994 goto closefs;
2995 }
2996 if (features_cmd) {
2997 rc = update_feature_set(fs, features_cmd);
2998 if (rc)
2999 goto closefs;
3000 }
3001 if (extended_cmd) {
3002 rc = parse_extended_opts(fs, extended_cmd);
3003 if (rc)
3004 goto closefs;
3005 if (clear_mmp && !f_flag) {
3006 fputs(_("Error in using clear_mmp. "
3007 "It must be used with -f\n"),
3008 stderr);
3009 goto closefs;
3010 }
3011 }
3012 if (clear_mmp) {
3013 rc = ext2fs_mmp_clear(fs);
3014 goto closefs;
3015 }
3016 if (journal_size || journal_device) {
3017 rc = add_journal(fs);
3018 if (rc)
3019 goto closefs;
3020 }
3021
3022 if (Q_flag) {
3023 if (mount_flags & EXT2_MF_MOUNTED) {
3024 fputs(_("The quota feature may only be changed when "
3025 "the filesystem is unmounted.\n"), stderr);
3026 rc = 1;
3027 goto closefs;
3028 }
3029 handle_quota_options(fs);
3030 }
3031
3032 if (U_flag) {
3033 int set_csum = 0;
3034 dgrp_t i;
3035 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3036 __u8 old_uuid[UUID_SIZE];
3037
3038 if (ext2fs_has_group_desc_csum(fs)) {
3039 /*
3040 * Changing the UUID on a metadata_csum FS requires
3041 * rewriting all metadata, which can race with a
3042 * mounted fs. Don't allow that unless we're saving
3043 * the checksum seed.
3044 */
3045 if ((mount_flags & EXT2_MF_MOUNTED) &&
3046 !ext2fs_has_feature_csum_seed(fs->super) &&
3047 ext2fs_has_feature_metadata_csum(fs->super)) {
3048 fputs(_("The UUID may only be "
3049 "changed when the filesystem is "
3050 "unmounted.\n"), stderr);
3051 fputs(_("If you only use kernels newer than "
3052 "v4.4, run 'tune2fs -O "
3053 "metadata_csum_seed' and re-run this "
3054 "command.\n"), stderr);
3055 try_confirm_csum_seed_support();
3056 exit(1);
3057 }
3058 if (!ext2fs_has_feature_csum_seed(fs->super))
3059 check_fsck_needed(fs,
3060 _("Setting UUID on a checksummed "
3061 "filesystem could take some time."));
3062
3063 /*
3064 * Determine if the block group checksums are
3065 * correct so we know whether or not to set
3066 * them later on.
3067 */
3068 for (i = 0; i < fs->group_desc_count; i++)
3069 if (!ext2fs_group_desc_csum_verify(fs, i))
3070 break;
3071 if (i >= fs->group_desc_count)
3072 set_csum = 1;
3073 }
3074
3075 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
3076 if ((strcasecmp(new_UUID, "null") == 0) ||
3077 (strcasecmp(new_UUID, "clear") == 0)) {
3078 uuid_clear(sb->s_uuid);
3079 } else if (strcasecmp(new_UUID, "time") == 0) {
3080 uuid_generate_time(sb->s_uuid);
3081 } else if (strcasecmp(new_UUID, "random") == 0) {
3082 uuid_generate(sb->s_uuid);
3083 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
3084 com_err(program_name, 0, "%s",
3085 _("Invalid UUID format\n"));
3086 rc = 1;
3087 goto closefs;
3088 }
3089 ext2fs_init_csum_seed(fs);
3090 if (set_csum) {
3091 for (i = 0; i < fs->group_desc_count; i++)
3092 ext2fs_group_desc_csum_set(fs, i);
3093 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3094 }
3095
3096 /* If this is a journal dev, we need to copy UUID into jsb */
3097 if (!(rc = get_journal_sb(fs, buf))) {
3098 journal_superblock_t *jsb;
3099
3100 jsb = (journal_superblock_t *) buf;
3101 fputs(_("Need to update journal superblock.\n"), stdout);
3102 memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3103
3104 /* Writeback the journal superblock */
3105 if ((rc = io_channel_write_blk64(fs->io,
3106 ext2fs_journal_sb_start(fs->blocksize),
3107 -SUPERBLOCK_SIZE, buf)))
3108 goto closefs;
3109 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3110 goto closefs;
3111 else {
3112 rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3113
3114 if ((rc = fs_update_journal_user(sb, old_uuid)))
3115 goto closefs;
3116 }
3117
3118 ext2fs_mark_super_dirty(fs);
3119 if (ext2fs_has_feature_metadata_csum(fs->super) &&
3120 !ext2fs_has_feature_csum_seed(fs->super))
3121 rewrite_checksums = 1;
3122 }
3123
3124 if (I_flag) {
3125 if (mount_flags & EXT2_MF_MOUNTED) {
3126 fputs(_("The inode size may only be "
3127 "changed when the filesystem is "
3128 "unmounted.\n"), stderr);
3129 rc = 1;
3130 goto closefs;
3131 }
3132 if (ext2fs_has_feature_flex_bg(fs->super)) {
3133 fputs(_("Changing the inode size not supported for "
3134 "filesystems with the flex_bg\n"
3135 "feature enabled.\n"),
3136 stderr);
3137 rc = 1;
3138 goto closefs;
3139 }
3140 /*
3141 * We want to update group descriptor also
3142 * with the new free inode count
3143 */
3144 if (rewrite_checksums)
3145 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3146 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3147 retval = resize_inode(fs, new_inode_size);
3148 if (rewrite_checksums)
3149 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3150 if (retval == 0) {
3151 printf(_("Setting inode size %lu\n"),
3152 new_inode_size);
3153 rewrite_checksums = 1;
3154 } else {
3155 printf("%s", _("Failed to change inode size\n"));
3156 rc = 1;
3157 goto closefs;
3158 }
3159 }
3160
3161 if (rewrite_checksums)
3162 rewrite_metadata_checksums(fs);
3163
3164 if (l_flag)
3165 list_super(sb);
3166 if (stride_set) {
3167 sb->s_raid_stride = stride;
3168 ext2fs_mark_super_dirty(fs);
3169 printf(_("Setting stride size to %d\n"), stride);
3170 }
3171 if (stripe_width_set) {
3172 sb->s_raid_stripe_width = stripe_width;
3173 ext2fs_mark_super_dirty(fs);
3174 printf(_("Setting stripe width to %d\n"), stripe_width);
3175 }
3176 if (ext_mount_opts) {
3177 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3178 sizeof(fs->super->s_mount_opts));
3179 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3180 ext2fs_mark_super_dirty(fs);
3181 printf(_("Setting extended default mount options to '%s'\n"),
3182 ext_mount_opts);
3183 free(ext_mount_opts);
3184 }
3185
3186 #ifdef NO_RECOVERY
3187 /* Warn if file system needs recovery and it is opened for writing. */
3188 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3189 (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
3190 (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
3191 fprintf(stderr,
3192 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
3193 "\te2fsck -E journal_only %s\n\n"
3194 "then rerun this command. Otherwise, any changes made may be overwritten\n"
3195 "by journal recovery.\n"), device_name);
3196 }
3197 #else
3198 /* Recover the journal if possible. */
3199 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3200 ext2fs_has_feature_journal_needs_recovery(fs->super)) {
3201 errcode_t err;
3202
3203 printf(_("Recovering journal.\n"));
3204 err = ext2fs_run_ext3_journal(&fs);
3205 if (err) {
3206 com_err("tune2fs", err, "while recovering journal.\n");
3207 printf(_("Please run e2fsck -fy %s.\n"), argv[1]);
3208 goto closefs;
3209 }
3210 ext2fs_clear_feature_journal_needs_recovery(fs->super);
3211 ext2fs_mark_super_dirty(fs);
3212 }
3213 #endif
3214
3215 free(device_name);
3216 remove_error_table(&et_ext2_error_table);
3217
3218 closefs:
3219 if (rc) {
3220 ext2fs_mmp_stop(fs);
3221 #ifndef BUILD_AS_LIB
3222 exit(1);
3223 #endif
3224 }
3225
3226 convert_64bit(fs, feature_64bit);
3227 return (ext2fs_close_free(&fs) ? 1 : 0);
3228 }
Unnamed repository; edit this file 'description' to name the repository.