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[thirdparty/e2fsprogs.git] / misc / tune2fs.c
1 /*
2 * tune2fs.c - Change the file system parameters on an ext2 file system
3 *
4 * Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
5 * Laboratoire MASI, Institut Blaise Pascal
6 * Universite Pierre et Marie Curie (Paris VI)
7 *
8 * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
9 *
10 * %Begin-Header%
11 * This file may be redistributed under the terms of the GNU Public
12 * License.
13 * %End-Header%
14 */
15
16 /*
17 * History:
18 * 93/06/01 - Creation
19 * 93/10/31 - Added the -c option to change the maximal mount counts
20 * 93/12/14 - Added -l flag to list contents of superblock
21 * M.J.E. Mol (marcel@duteca.et.tudelft.nl)
22 * F.W. ten Wolde (franky@duteca.et.tudelft.nl)
23 * 93/12/29 - Added the -e option to change errors behavior
24 * 94/02/27 - Ported to use the ext2fs library
25 * 94/03/06 - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
26 */
27
28 #define _XOPEN_SOURCE 600 /* for inclusion of strptime() */
29 #include "config.h"
30 #include <fcntl.h>
31 #include <grp.h>
32 #ifdef HAVE_GETOPT_H
33 #include <getopt.h>
34 #else
35 extern char *optarg;
36 extern int optind;
37 #endif
38 #include <pwd.h>
39 #include <stdio.h>
40 #ifdef HAVE_STDLIB_H
41 #include <stdlib.h>
42 #endif
43 #ifdef HAVE_STRINGS_H
44 #include <strings.h> /* for strcasecmp() */
45 #else
46 #define _BSD_SOURCE /* for inclusion of strcasecmp() via <string.h> */
47 #define _DEFAULT_SOURCE /* since glibc 2.20 _BSD_SOURCE is deprecated */
48 #endif
49 #include <string.h>
50 #include <time.h>
51 #include <unistd.h>
52 #include <sys/types.h>
53 #include <libgen.h>
54 #include <limits.h>
55
56 #include "ext2fs/ext2_fs.h"
57 #include "ext2fs/ext2fs.h"
58 #include "ext2fs/kernel-jbd.h"
59 #include "et/com_err.h"
60 #include "support/plausible.h"
61 #include "support/quotaio.h"
62 #include "uuid/uuid.h"
63 #include "e2p/e2p.h"
64 #include "util.h"
65 #include "blkid/blkid.h"
66
67 #include "../version.h"
68 #include "support/nls-enable.h"
69
70 #define QOPT_ENABLE (1)
71 #define QOPT_DISABLE (-1)
72
73 extern int ask_yn(const char *string, int def);
74
75 const char *program_name = "tune2fs";
76 char *device_name;
77 char *new_label, *new_last_mounted, *new_UUID;
78 char *io_options;
79 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
80 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
81 static int I_flag;
82 static int clear_mmp;
83 static time_t last_check_time;
84 static int print_label;
85 static int max_mount_count, mount_count, mount_flags;
86 static unsigned long interval;
87 static blk64_t reserved_blocks;
88 static double reserved_ratio;
89 static unsigned long resgid, resuid;
90 static unsigned short errors;
91 static int open_flag;
92 static char *features_cmd;
93 static char *mntopts_cmd;
94 static int stride, stripe_width;
95 static int stride_set, stripe_width_set;
96 static char *extended_cmd;
97 static unsigned long new_inode_size;
98 static char *ext_mount_opts;
99 static int quota_enable[MAXQUOTAS];
100 static int rewrite_checksums;
101 static int feature_64bit;
102 static int fsck_requested;
103 static char *undo_file;
104
105 int journal_size, journal_flags;
106 char *journal_device;
107 static blk64_t journal_location = ~0LL;
108
109 static struct list_head blk_move_list;
110
111 struct blk_move {
112 struct list_head list;
113 blk64_t old_loc;
114 blk64_t new_loc;
115 };
116
117 errcode_t ext2fs_run_ext3_journal(ext2_filsys *fs);
118
119 static const char *please_fsck = N_("Please run e2fsck 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 static void usage(void)
128 {
129 fprintf(stderr,
130 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
131 "[-g group]\n"
132 "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
133 "\t[-m reserved_blocks_percent] [-o [^]mount_options[,...]]\n"
134 "\t[-p mmp_update_interval] [-r reserved_blocks_count] "
135 "[-u user]\n"
136 "\t[-C mount_count] [-L volume_label] [-M last_mounted_dir]\n"
137 "\t[-O [^]feature[,...]] [-Q quota_options]\n"
138 "\t[-E extended-option[,...]] [-T last_check_time] "
139 "[-U UUID]\n\t[-I new_inode_size] [-z undo_file] device\n"),
140 program_name);
141 exit(1);
142 }
143
144 static __u32 ok_features[3] = {
145 /* Compat */
146 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
147 EXT2_FEATURE_COMPAT_DIR_INDEX,
148 /* Incompat */
149 EXT2_FEATURE_INCOMPAT_FILETYPE |
150 EXT3_FEATURE_INCOMPAT_EXTENTS |
151 EXT4_FEATURE_INCOMPAT_FLEX_BG |
152 EXT4_FEATURE_INCOMPAT_MMP |
153 EXT4_FEATURE_INCOMPAT_64BIT |
154 EXT4_FEATURE_INCOMPAT_ENCRYPT |
155 EXT4_FEATURE_INCOMPAT_CSUM_SEED,
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 EXT4_FEATURE_RO_COMPAT_QUOTA |
164 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
165 EXT4_FEATURE_RO_COMPAT_READONLY |
166 EXT4_FEATURE_RO_COMPAT_PROJECT
167 };
168
169 static __u32 clear_ok_features[3] = {
170 /* Compat */
171 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
172 EXT2_FEATURE_COMPAT_RESIZE_INODE |
173 EXT2_FEATURE_COMPAT_DIR_INDEX,
174 /* Incompat */
175 EXT2_FEATURE_INCOMPAT_FILETYPE |
176 EXT4_FEATURE_INCOMPAT_FLEX_BG |
177 EXT4_FEATURE_INCOMPAT_MMP |
178 EXT4_FEATURE_INCOMPAT_64BIT |
179 EXT4_FEATURE_INCOMPAT_CSUM_SEED,
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 EXT4_FEATURE_RO_COMPAT_QUOTA |
187 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
188 EXT4_FEATURE_RO_COMPAT_READONLY
189 };
190
191 /**
192 * Try to get journal super block if any
193 */
194 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
195 {
196 int retval;
197 journal_superblock_t *jsb;
198
199 if (!ext2fs_has_feature_journal_dev(jfs->super)) {
200 return EXT2_ET_UNSUPP_FEATURE;
201 }
202
203 /* Get the journal superblock */
204 if ((retval = io_channel_read_blk64(jfs->io,
205 ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
206 com_err(program_name, retval, "%s",
207 _("while reading journal superblock"));
208 return retval;
209 }
210
211 jsb = (journal_superblock_t *) buf;
212 if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
213 (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
214 fputs(_("Journal superblock not found!\n"), stderr);
215 return EXT2_ET_BAD_MAGIC;
216 }
217
218 return 0;
219 }
220
221 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JFS_USERS_SIZE],
222 int nr_users)
223 {
224 int i;
225 for (i = 0; i < nr_users; i++) {
226 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
227 return &s_users[i * UUID_SIZE];
228 }
229
230 return NULL;
231 }
232
233 /*
234 * Remove an external journal from the filesystem
235 */
236 static int remove_journal_device(ext2_filsys fs)
237 {
238 char *journal_path;
239 ext2_filsys jfs;
240 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
241 journal_superblock_t *jsb;
242 int i, nr_users;
243 errcode_t retval;
244 int commit_remove_journal = 0;
245 io_manager io_ptr;
246
247 if (f_flag)
248 commit_remove_journal = 1; /* force removal even if error */
249
250 uuid_unparse(fs->super->s_journal_uuid, buf);
251 journal_path = blkid_get_devname(NULL, "UUID", buf);
252
253 if (!journal_path) {
254 journal_path =
255 ext2fs_find_block_device(fs->super->s_journal_dev);
256 if (!journal_path)
257 goto no_valid_journal;
258 }
259
260 #ifdef CONFIG_TESTIO_DEBUG
261 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
262 io_ptr = test_io_manager;
263 test_io_backing_manager = unix_io_manager;
264 } else
265 #endif
266 io_ptr = unix_io_manager;
267 retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
268 EXT2_FLAG_JOURNAL_DEV_OK, 0,
269 fs->blocksize, io_ptr, &jfs);
270 if (retval) {
271 com_err(program_name, retval, "%s",
272 _("while trying to open external journal"));
273 goto no_valid_journal;
274 }
275
276 if ((retval = get_journal_sb(jfs, buf))) {
277 if (retval == EXT2_ET_UNSUPP_FEATURE)
278 fprintf(stderr, _("%s is not a journal device.\n"),
279 journal_path);
280 goto no_valid_journal;
281 }
282
283 jsb = (journal_superblock_t *) buf;
284 /* Find the filesystem UUID */
285 nr_users = ntohl(jsb->s_nr_users);
286
287 if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
288 fputs(_("Filesystem's UUID not found on journal device.\n"),
289 stderr);
290 commit_remove_journal = 1;
291 goto no_valid_journal;
292 }
293 nr_users--;
294 for (i = 0; i < nr_users; i++)
295 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
296 jsb->s_nr_users = htonl(nr_users);
297
298 /* Write back the journal superblock */
299 retval = io_channel_write_blk64(jfs->io,
300 ext2fs_journal_sb_start(fs->blocksize),
301 -SUPERBLOCK_SIZE, buf);
302 if (retval) {
303 com_err(program_name, retval,
304 "while writing journal superblock.");
305 goto no_valid_journal;
306 }
307
308 commit_remove_journal = 1;
309
310 no_valid_journal:
311 if (commit_remove_journal == 0) {
312 fputs(_("Cannot locate journal device. It was NOT removed\n"
313 "Use -f option to remove missing journal device.\n"),
314 stderr);
315 return 1;
316 }
317 fs->super->s_journal_dev = 0;
318 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
319 uuid_clear(fs->super->s_journal_uuid);
320 ext2fs_mark_super_dirty(fs);
321 fputs(_("Journal removed\n"), stdout);
322 free(journal_path);
323
324 return 0;
325 }
326
327 /* Helper function for remove_journal_inode */
328 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
329 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
330 blk64_t ref_block EXT2FS_ATTR((unused)),
331 int ref_offset EXT2FS_ATTR((unused)),
332 void *private EXT2FS_ATTR((unused)))
333 {
334 blk64_t block;
335 int group;
336
337 block = *blocknr;
338 ext2fs_unmark_block_bitmap2(fs->block_map, block);
339 group = ext2fs_group_of_blk2(fs, block);
340 ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
341 ext2fs_group_desc_csum_set(fs, group);
342 ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
343 return 0;
344 }
345
346 /*
347 * Remove the journal inode from the filesystem
348 */
349 static errcode_t remove_journal_inode(ext2_filsys fs)
350 {
351 struct ext2_inode inode;
352 errcode_t retval;
353 ino_t ino = fs->super->s_journal_inum;
354
355 retval = ext2fs_read_inode(fs, ino, &inode);
356 if (retval) {
357 com_err(program_name, retval, "%s",
358 _("while reading journal inode"));
359 return retval;
360 }
361 if (ino == EXT2_JOURNAL_INO) {
362 retval = ext2fs_read_bitmaps(fs);
363 if (retval) {
364 com_err(program_name, retval, "%s",
365 _("while reading bitmaps"));
366 return retval;
367 }
368 retval = ext2fs_block_iterate3(fs, ino,
369 BLOCK_FLAG_READ_ONLY, NULL,
370 release_blocks_proc, NULL);
371 if (retval) {
372 com_err(program_name, retval, "%s",
373 _("while clearing journal inode"));
374 return retval;
375 }
376 memset(&inode, 0, sizeof(inode));
377 ext2fs_mark_bb_dirty(fs);
378 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
379 } else
380 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
381 retval = ext2fs_write_inode(fs, ino, &inode);
382 if (retval) {
383 com_err(program_name, retval, "%s",
384 _("while writing journal inode"));
385 return retval;
386 }
387 fs->super->s_journal_inum = 0;
388 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
389 ext2fs_mark_super_dirty(fs);
390
391 return 0;
392 }
393
394 /*
395 * Update the default mount options
396 */
397 static int update_mntopts(ext2_filsys fs, char *mntopts)
398 {
399 struct ext2_super_block *sb = fs->super;
400
401 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
402 fprintf(stderr, _("Invalid mount option set: %s\n"),
403 mntopts);
404 return 1;
405 }
406 ext2fs_mark_super_dirty(fs);
407
408 return 0;
409 }
410
411 static void check_fsck_needed(ext2_filsys fs, const char *prompt)
412 {
413 /* Refuse to modify anything but a freshly checked valid filesystem. */
414 if (!(fs->super->s_state & EXT2_VALID_FS) ||
415 (fs->super->s_state & EXT2_ERROR_FS) ||
416 (fs->super->s_lastcheck < fs->super->s_mtime)) {
417 printf("\n%s\n", _(please_fsck));
418 if (mount_flags & EXT2_MF_READONLY)
419 printf("%s", _("(and reboot afterwards!)\n"));
420 exit(1);
421 }
422
423 /* Give the admin a few seconds to bail out of a dangerous op. */
424 if (!getenv("TUNE2FS_FORCE_PROMPT") && (!isatty(0) || !isatty(1)))
425 return;
426
427 puts(prompt);
428 proceed_question(5);
429 }
430
431 static void request_dir_fsck_afterwards(ext2_filsys fs)
432 {
433 static int requested;
434
435 if (requested++)
436 return;
437 fsck_requested++;
438 fs->super->s_state &= ~EXT2_VALID_FS;
439 printf("\n%s\n", _(please_dir_fsck));
440 if (mount_flags & EXT2_MF_READONLY)
441 printf("%s", _("(and reboot afterwards!)\n"));
442 }
443
444 static void request_fsck_afterwards(ext2_filsys fs)
445 {
446 static int requested = 0;
447
448 if (requested++)
449 return;
450 fsck_requested++;
451 fs->super->s_state &= ~EXT2_VALID_FS;
452 printf("\n%s\n", _(please_fsck));
453 if (mount_flags & EXT2_MF_READONLY)
454 printf("%s", _("(and reboot afterwards!)\n"));
455 }
456
457 static void convert_64bit(ext2_filsys fs, int direction)
458 {
459 if (!direction)
460 return;
461
462 /*
463 * Is resize2fs going to demand a fsck run? Might as well tell the
464 * user now.
465 */
466 if (!fsck_requested &&
467 ((fs->super->s_state & EXT2_ERROR_FS) ||
468 !(fs->super->s_state & EXT2_VALID_FS) ||
469 fs->super->s_lastcheck < fs->super->s_mtime))
470 request_fsck_afterwards(fs);
471 if (fsck_requested)
472 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
473 direction > 0 ? "-b" : "-s", fs->device_name);
474 else
475 fprintf(stderr, _("Please run `resize2fs %s %s"),
476 direction > 0 ? "-b" : "-s", fs->device_name);
477
478 if (undo_file)
479 fprintf(stderr, _(" -z \"%s\""), undo_file);
480 if (direction > 0)
481 fprintf(stderr, _("' to enable 64-bit mode.\n"));
482 else
483 fprintf(stderr, _("' to disable 64-bit mode.\n"));
484 }
485
486 /* Rewrite extents */
487 static errcode_t rewrite_extents(ext2_filsys fs, ext2_ino_t ino,
488 struct ext2_inode *inode)
489 {
490 ext2_extent_handle_t handle;
491 struct ext2fs_extent extent;
492 errcode_t errcode;
493 struct ext2_extent_info info;
494
495 if (!(inode->i_flags & EXT4_EXTENTS_FL) ||
496 !ext2fs_has_feature_metadata_csum(fs->super))
497 return 0;
498
499 errcode = ext2fs_extent_open(fs, ino, &handle);
500 if (errcode)
501 return errcode;
502
503 errcode = ext2fs_extent_get(handle, EXT2_EXTENT_ROOT, &extent);
504 if (errcode)
505 goto out;
506
507 do {
508 errcode = ext2fs_extent_get_info(handle, &info);
509 if (errcode)
510 break;
511
512 /*
513 * If this is the first extent in an extent block that we
514 * haven't visited, rewrite the extent to force the ETB
515 * checksum to be rewritten.
516 */
517 if (info.curr_entry == 1 && info.curr_level != 0 &&
518 !(extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)) {
519 errcode = ext2fs_extent_replace(handle, 0, &extent);
520 if (errcode)
521 break;
522 }
523
524 /* Skip to the end of a block of leaf nodes */
525 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
526 errcode = ext2fs_extent_get(handle,
527 EXT2_EXTENT_LAST_SIB,
528 &extent);
529 if (errcode)
530 break;
531 }
532
533 errcode = ext2fs_extent_get(handle, EXT2_EXTENT_NEXT, &extent);
534 } while (errcode == 0);
535
536 out:
537 /* Ok if we run off the end */
538 if (errcode == EXT2_ET_EXTENT_NO_NEXT)
539 errcode = 0;
540 ext2fs_extent_free(handle);
541 return errcode;
542 }
543
544 /*
545 * Rewrite directory blocks with checksums
546 */
547 struct rewrite_dir_context {
548 char *buf;
549 errcode_t errcode;
550 ext2_ino_t dir;
551 int is_htree;
552 };
553
554 static int rewrite_dir_block(ext2_filsys fs,
555 blk64_t *blocknr,
556 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
557 blk64_t ref_block EXT2FS_ATTR((unused)),
558 int ref_offset EXT2FS_ATTR((unused)),
559 void *priv_data)
560 {
561 struct ext2_dx_countlimit *dcl = NULL;
562 struct rewrite_dir_context *ctx = priv_data;
563 int dcl_offset, changed = 0;
564
565 ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
566 ctx->dir);
567 if (ctx->errcode)
568 return BLOCK_ABORT;
569
570 /* if htree node... */
571 if (ctx->is_htree)
572 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
573 &dcl, &dcl_offset);
574 if (dcl) {
575 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
576 /* Ensure limit is the max size */
577 int max_entries = (fs->blocksize - dcl_offset) /
578 sizeof(struct ext2_dx_entry);
579 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
580 changed = 1;
581 dcl->limit = ext2fs_cpu_to_le16(max_entries);
582 }
583 } else {
584 /* If htree block is full then rebuild the dir */
585 if (ext2fs_le16_to_cpu(dcl->count) ==
586 ext2fs_le16_to_cpu(dcl->limit)) {
587 request_dir_fsck_afterwards(fs);
588 return 0;
589 }
590 /*
591 * Ensure dcl->limit is small enough to leave room for
592 * the checksum tail.
593 */
594 int max_entries = (fs->blocksize - (dcl_offset +
595 sizeof(struct ext2_dx_tail))) /
596 sizeof(struct ext2_dx_entry);
597 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
598 dcl->limit = ext2fs_cpu_to_le16(max_entries);
599 /* Always rewrite checksum */
600 changed = 1;
601 }
602 } else {
603 unsigned int rec_len, name_size;
604 char *top = ctx->buf + fs->blocksize;
605 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
606 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
607
608 /* Find last and penultimate dirent */
609 while ((char *)de < top) {
610 penultimate_de = last_de;
611 last_de = de;
612 ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
613 if (!ctx->errcode && !rec_len)
614 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
615 if (ctx->errcode)
616 return BLOCK_ABORT;
617 de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
618 }
619 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
620 if (ctx->errcode)
621 return BLOCK_ABORT;
622 name_size = ext2fs_dirent_name_len(last_de);
623
624 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
625 if (!penultimate_de)
626 return 0;
627 if (last_de->inode ||
628 name_size ||
629 rec_len != sizeof(struct ext2_dir_entry_tail))
630 return 0;
631 /*
632 * The last dirent is unused and the right length to
633 * have stored a checksum. Erase it.
634 */
635 ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
636 &rec_len);
637 if (!rec_len)
638 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
639 if (ctx->errcode)
640 return BLOCK_ABORT;
641 ext2fs_set_rec_len(fs, rec_len +
642 sizeof(struct ext2_dir_entry_tail),
643 penultimate_de);
644 changed = 1;
645 } else {
646 unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
647 struct ext2_dir_entry_tail *t;
648
649 /*
650 * If the last dirent looks like the tail, just update
651 * the checksum.
652 */
653 if (!last_de->inode &&
654 rec_len == csum_size) {
655 t = (struct ext2_dir_entry_tail *)last_de;
656 t->det_reserved_name_len =
657 EXT2_DIR_NAME_LEN_CSUM;
658 changed = 1;
659 goto out;
660 }
661 if (name_size & 3)
662 name_size = (name_size & ~3) + 4;
663 /* If there's not enough space for the tail, e2fsck */
664 if (rec_len <= (8 + name_size + csum_size)) {
665 request_dir_fsck_afterwards(fs);
666 return 0;
667 }
668 /* Shorten that last de and insert the tail */
669 ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
670 t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
671 ext2fs_initialize_dirent_tail(fs, t);
672
673 /* Always update checksum */
674 changed = 1;
675 }
676 }
677
678 out:
679 if (!changed)
680 return 0;
681
682 ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
683 0, ctx->dir);
684 if (ctx->errcode)
685 return BLOCK_ABORT;
686
687 return 0;
688 }
689
690 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
691 struct ext2_inode *inode)
692 {
693 errcode_t retval;
694 struct rewrite_dir_context ctx;
695
696 retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
697 if (retval)
698 return retval;
699
700 ctx.is_htree = (inode->i_flags & EXT2_INDEX_FL);
701 ctx.dir = dir;
702 ctx.errcode = 0;
703 retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
704 BLOCK_FLAG_DATA_ONLY,
705 0, rewrite_dir_block, &ctx);
706
707 ext2fs_free_mem(&ctx.buf);
708 if (retval)
709 return retval;
710
711 return ctx.errcode;
712 }
713
714 /*
715 * Forcibly set checksums in all inodes.
716 */
717 static void rewrite_inodes(ext2_filsys fs)
718 {
719 int length = EXT2_INODE_SIZE(fs->super);
720 struct ext2_inode *inode, *zero;
721 char *ea_buf;
722 ext2_inode_scan scan;
723 errcode_t retval;
724 ext2_ino_t ino;
725 blk64_t file_acl_block;
726 int inode_dirty;
727
728 if (fs->super->s_creator_os != EXT2_OS_LINUX)
729 return;
730
731 retval = ext2fs_open_inode_scan(fs, 0, &scan);
732 if (retval) {
733 com_err("set_csum", retval, "while opening inode scan");
734 exit(1);
735 }
736
737 retval = ext2fs_get_mem(length, &inode);
738 if (retval) {
739 com_err("set_csum", retval, "while allocating memory");
740 exit(1);
741 }
742
743 retval = ext2fs_get_memzero(length, &zero);
744 if (retval) {
745 com_err("set_csum", retval, "while allocating memory");
746 exit(1);
747 }
748
749 retval = ext2fs_get_mem(fs->blocksize, &ea_buf);
750 if (retval) {
751 com_err("set_csum", retval, "while allocating memory");
752 exit(1);
753 }
754
755 do {
756 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
757 if (retval) {
758 com_err("set_csum", retval, "while getting next inode");
759 exit(1);
760 }
761 if (!ino)
762 break;
763 if (ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
764 inode_dirty = 1;
765 } else {
766 if (memcmp(inode, zero, length) != 0) {
767 memset(inode, 0, length);
768 inode_dirty = 1;
769 } else {
770 inode_dirty = 0;
771 }
772 }
773
774 if (inode_dirty) {
775 retval = ext2fs_write_inode_full(fs, ino, inode,
776 length);
777 if (retval) {
778 com_err("set_csum", retval, "while writing "
779 "inode");
780 exit(1);
781 }
782 }
783
784 retval = rewrite_extents(fs, ino, inode);
785 if (retval) {
786 com_err("rewrite_extents", retval,
787 "while rewriting extents");
788 exit(1);
789 }
790
791 if (LINUX_S_ISDIR(inode->i_mode) &&
792 ext2fs_inode_has_valid_blocks2(fs, inode)) {
793 retval = rewrite_directory(fs, ino, inode);
794 if (retval) {
795 com_err("rewrite_directory", retval,
796 "while rewriting directories");
797 exit(1);
798 }
799 }
800
801 file_acl_block = ext2fs_file_acl_block(fs, inode);
802 if (!file_acl_block)
803 continue;
804 retval = ext2fs_read_ext_attr3(fs, file_acl_block, ea_buf, ino);
805 if (retval) {
806 com_err("rewrite_eablock", retval,
807 "while rewriting extended attribute");
808 exit(1);
809 }
810 retval = ext2fs_write_ext_attr3(fs, file_acl_block, ea_buf,
811 ino);
812 if (retval) {
813 com_err("rewrite_eablock", retval,
814 "while rewriting extended attribute");
815 exit(1);
816 }
817 } while (ino);
818
819 ext2fs_free_mem(&zero);
820 ext2fs_free_mem(&inode);
821 ext2fs_free_mem(&ea_buf);
822 ext2fs_close_inode_scan(scan);
823 }
824
825 static void rewrite_metadata_checksums(ext2_filsys fs)
826 {
827 errcode_t retval;
828 dgrp_t i;
829
830 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
831 ext2fs_init_csum_seed(fs);
832 for (i = 0; i < fs->group_desc_count; i++)
833 ext2fs_group_desc_csum_set(fs, i);
834 retval = ext2fs_read_bitmaps(fs);
835 if (retval) {
836 com_err("rewrite_metadata_checksums", retval,
837 "while reading bitmaps");
838 exit(1);
839 }
840 rewrite_inodes(fs);
841 ext2fs_mark_ib_dirty(fs);
842 ext2fs_mark_bb_dirty(fs);
843 ext2fs_mmp_update2(fs, 1);
844 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
845 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
846 if (ext2fs_has_feature_metadata_csum(fs->super))
847 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
848 else
849 fs->super->s_checksum_type = 0;
850 ext2fs_mark_super_dirty(fs);
851 }
852
853 static void enable_uninit_bg(ext2_filsys fs)
854 {
855 struct ext2_group_desc *gd;
856 dgrp_t i;
857
858 for (i = 0; i < fs->group_desc_count; i++) {
859 gd = ext2fs_group_desc(fs, fs->group_desc, i);
860 gd->bg_itable_unused = 0;
861 gd->bg_flags = EXT2_BG_INODE_ZEROED;
862 ext2fs_group_desc_csum_set(fs, i);
863 }
864 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
865 }
866
867 static errcode_t zero_empty_inodes(ext2_filsys fs)
868 {
869 int length = EXT2_INODE_SIZE(fs->super);
870 struct ext2_inode *inode = NULL;
871 ext2_inode_scan scan;
872 errcode_t retval;
873 ext2_ino_t ino;
874
875 retval = ext2fs_open_inode_scan(fs, 0, &scan);
876 if (retval)
877 goto out;
878
879 retval = ext2fs_get_mem(length, &inode);
880 if (retval)
881 goto out;
882
883 do {
884 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
885 if (retval)
886 goto out;
887 if (!ino)
888 break;
889 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
890 memset(inode, 0, length);
891 retval = ext2fs_write_inode_full(fs, ino, inode,
892 length);
893 if (retval)
894 goto out;
895 }
896 } while (1);
897
898 out:
899 ext2fs_free_mem(&inode);
900 ext2fs_close_inode_scan(scan);
901 return retval;
902 }
903
904 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
905 {
906 struct ext2_group_desc *gd;
907 dgrp_t i;
908 errcode_t retval;
909 blk64_t b, c, d;
910
911 /* Load bitmaps to ensure that the uninit ones get written out */
912 fs->super->s_feature_ro_compat |= csum_feature_flag;
913 retval = ext2fs_read_bitmaps(fs);
914 fs->super->s_feature_ro_compat &= ~csum_feature_flag;
915 if (retval) {
916 com_err("disable_uninit_bg", retval,
917 "while reading bitmaps");
918 request_fsck_afterwards(fs);
919 return retval;
920 }
921 ext2fs_mark_ib_dirty(fs);
922 ext2fs_mark_bb_dirty(fs);
923
924 /* If we're only turning off uninit_bg, zero the inodes */
925 if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
926 retval = zero_empty_inodes(fs);
927 if (retval) {
928 com_err("disable_uninit_bg", retval,
929 "while zeroing unused inodes");
930 request_fsck_afterwards(fs);
931 return retval;
932 }
933 }
934
935 /* The bbitmap is zeroed; we must mark group metadata blocks in use */
936 for (i = 0; i < fs->group_desc_count; i++) {
937 b = ext2fs_block_bitmap_loc(fs, i);
938 ext2fs_mark_block_bitmap2(fs->block_map, b);
939 b = ext2fs_inode_bitmap_loc(fs, i);
940 ext2fs_mark_block_bitmap2(fs->block_map, b);
941
942 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
943 if (retval == 0 && b)
944 ext2fs_mark_block_bitmap2(fs->block_map, b);
945 if (retval == 0 && c)
946 ext2fs_mark_block_bitmap2(fs->block_map, c);
947 if (retval == 0 && d)
948 ext2fs_mark_block_bitmap2(fs->block_map, d);
949 if (retval) {
950 com_err("disable_uninit_bg", retval,
951 "while initializing block bitmaps");
952 request_fsck_afterwards(fs);
953 }
954
955 gd = ext2fs_group_desc(fs, fs->group_desc, i);
956 gd->bg_itable_unused = 0;
957 gd->bg_flags = 0;
958 ext2fs_group_desc_csum_set(fs, i);
959 }
960 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
961 ext2fs_mark_super_dirty(fs);
962
963 return 0;
964 }
965
966 static void
967 try_confirm_csum_seed_support(void)
968 {
969 if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK))
970 fputs(_("WARNING: Could not confirm kernel support for "
971 "metadata_csum_seed.\n This requires Linux >= "
972 "v4.4.\n"), stderr);
973 }
974
975 /*
976 * Update the feature set as provided by the user.
977 */
978 static int update_feature_set(ext2_filsys fs, char *features)
979 {
980 struct ext2_super_block *sb = fs->super;
981 __u32 old_features[3];
982 int type_err;
983 unsigned int mask_err;
984 errcode_t err;
985 enum quota_type qtype;
986
987 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
988 ((&sb->s_feature_compat)[(type)] & (mask)))
989 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
990 !((&sb->s_feature_compat)[(type)] & (mask)))
991 #define FEATURE_CHANGED(type, mask) ((mask) & \
992 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
993
994 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
995 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
996 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
997
998 if (e2p_edit_feature2(features, &sb->s_feature_compat,
999 ok_features, clear_ok_features,
1000 &type_err, &mask_err)) {
1001 if (!mask_err)
1002 fprintf(stderr,
1003 _("Invalid filesystem option set: %s\n"),
1004 features);
1005 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
1006 fprintf(stderr, _("Clearing filesystem feature '%s' "
1007 "not supported.\n"),
1008 e2p_feature2string(type_err &
1009 E2P_FEATURE_TYPE_MASK,
1010 mask_err));
1011 else
1012 fprintf(stderr, _("Setting filesystem feature '%s' "
1013 "not supported.\n"),
1014 e2p_feature2string(type_err, mask_err));
1015 return 1;
1016 }
1017
1018 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1019 if ((mount_flags & EXT2_MF_MOUNTED) &&
1020 !(mount_flags & EXT2_MF_READONLY)) {
1021 fputs(_("The has_journal feature may only be "
1022 "cleared when the filesystem is\n"
1023 "unmounted or mounted "
1024 "read-only.\n"), stderr);
1025 return 1;
1026 }
1027 if (ext2fs_has_feature_journal_needs_recovery(sb) &&
1028 f_flag < 2) {
1029 fputs(_("The needs_recovery flag is set. "
1030 "Please run e2fsck before clearing\n"
1031 "the has_journal flag.\n"), stderr);
1032 return 1;
1033 }
1034 if (sb->s_journal_inum) {
1035 if (remove_journal_inode(fs))
1036 return 1;
1037 }
1038 if (sb->s_journal_dev) {
1039 if (remove_journal_device(fs))
1040 return 1;
1041 }
1042 }
1043
1044 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1045 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1046 if (ext2fs_has_feature_meta_bg(sb)) {
1047 fputs(_("Setting filesystem feature 'sparse_super' "
1048 "not supported\nfor filesystems with "
1049 "the meta_bg feature enabled.\n"),
1050 stderr);
1051 return 1;
1052 }
1053 }
1054
1055 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1056 int error;
1057
1058 if ((mount_flags & EXT2_MF_MOUNTED) ||
1059 (mount_flags & EXT2_MF_READONLY)) {
1060 fputs(_("The multiple mount protection feature can't\n"
1061 "be set if the filesystem is mounted or\n"
1062 "read-only.\n"), stderr);
1063 return 1;
1064 }
1065
1066 error = ext2fs_mmp_init(fs);
1067 if (error) {
1068 fputs(_("\nError while enabling multiple mount "
1069 "protection feature."), stderr);
1070 return 1;
1071 }
1072
1073 /*
1074 * We want to update group desc with the new free blocks count
1075 */
1076 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1077
1078 printf(_("Multiple mount protection has been enabled "
1079 "with update interval %ds.\n"),
1080 sb->s_mmp_update_interval);
1081 }
1082
1083 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1084 int error;
1085
1086 if (mount_flags & EXT2_MF_READONLY) {
1087 fputs(_("The multiple mount protection feature cannot\n"
1088 "be disabled if the filesystem is readonly.\n"),
1089 stderr);
1090 return 1;
1091 }
1092
1093 error = ext2fs_read_bitmaps(fs);
1094 if (error) {
1095 fputs(_("Error while reading bitmaps\n"), stderr);
1096 return 1;
1097 }
1098
1099 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1100 if (error) {
1101 struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1102
1103 if (error == EXT2_ET_MMP_MAGIC_INVALID)
1104 printf(_("Magic number in MMP block does not "
1105 "match. expected: %x, actual: %x\n"),
1106 EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1107 else
1108 com_err(program_name, error, "%s",
1109 _("while reading MMP block."));
1110 goto mmp_error;
1111 }
1112
1113 /* We need to force out the group descriptors as well */
1114 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1115 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1116 mmp_error:
1117 sb->s_mmp_block = 0;
1118 sb->s_mmp_update_interval = 0;
1119 }
1120
1121 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1122 /*
1123 * If adding a journal flag, let the create journal
1124 * code below handle setting the flag and creating the
1125 * journal. We supply a default size if necessary.
1126 */
1127 if (!journal_size)
1128 journal_size = -1;
1129 ext2fs_clear_feature_journal(sb);
1130 }
1131
1132 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1133 if (!sb->s_def_hash_version)
1134 sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1135 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1136 uuid_generate((unsigned char *) sb->s_hash_seed);
1137 }
1138
1139 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1140 if (ext2fs_check_desc(fs)) {
1141 fputs(_("Clearing the flex_bg flag would "
1142 "cause the the filesystem to be\n"
1143 "inconsistent.\n"), stderr);
1144 return 1;
1145 }
1146 }
1147
1148 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1149 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1150 if ((mount_flags & EXT2_MF_MOUNTED) &&
1151 !(mount_flags & EXT2_MF_READONLY)) {
1152 fputs(_("The huge_file feature may only be "
1153 "cleared when the filesystem is\n"
1154 "unmounted or mounted "
1155 "read-only.\n"), stderr);
1156 return 1;
1157 }
1158 }
1159
1160 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1161 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1162 check_fsck_needed(fs,
1163 _("Enabling checksums could take some time."));
1164 if (mount_flags & EXT2_MF_MOUNTED) {
1165 fputs(_("Cannot enable metadata_csum on a mounted "
1166 "filesystem!\n"), stderr);
1167 exit(1);
1168 }
1169 if (!ext2fs_has_feature_extents(fs->super))
1170 printf("%s",
1171 _("Extents are not enabled. The file extent "
1172 "tree can be checksummed, whereas block maps "
1173 "cannot. Not enabling extents reduces the "
1174 "coverage of metadata checksumming. "
1175 "Re-run with -O extent to rectify.\n"));
1176 if (!ext2fs_has_feature_64bit(fs->super))
1177 printf("%s",
1178 _("64-bit filesystem support is not enabled. "
1179 "The larger fields afforded by this feature "
1180 "enable full-strength checksumming. "
1181 "Run resize2fs -b to rectify.\n"));
1182 rewrite_checksums = 1;
1183 /* metadata_csum supersedes uninit_bg */
1184 ext2fs_clear_feature_gdt_csum(fs->super);
1185
1186 /* if uninit_bg was previously off, rewrite group desc */
1187 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1188 EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1189 enable_uninit_bg(fs);
1190
1191 /*
1192 * Since metadata_csum supersedes uninit_bg, pretend like
1193 * uninit_bg has been off all along.
1194 */
1195 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1196 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1197 }
1198
1199 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1200 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1201 __u32 test_features[3];
1202
1203 check_fsck_needed(fs,
1204 _("Disabling checksums could take some time."));
1205 if (mount_flags & EXT2_MF_MOUNTED) {
1206 fputs(_("Cannot disable metadata_csum on a mounted "
1207 "filesystem!\n"), stderr);
1208 exit(1);
1209 }
1210 rewrite_checksums = 1;
1211
1212 /* Enable uninit_bg unless the user expressly turned it off */
1213 memcpy(test_features, old_features, sizeof(test_features));
1214 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1215 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1216 e2p_edit_feature2(features, test_features, ok_features,
1217 clear_ok_features, NULL, NULL);
1218 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1219 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1220 ext2fs_set_feature_gdt_csum(fs->super);
1221
1222 /*
1223 * If we're turning off metadata_csum and not turning on
1224 * uninit_bg, rewrite group desc.
1225 */
1226 if (!ext2fs_has_feature_gdt_csum(fs->super)) {
1227 err = disable_uninit_bg(fs,
1228 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1229 if (err)
1230 return 1;
1231 } else
1232 /*
1233 * metadata_csum previously provided uninit_bg, so if
1234 * we're also setting the uninit_bg feature bit,
1235 * pretend like it was previously enabled. Checksums
1236 * will be rewritten with crc16 later.
1237 */
1238 old_features[E2P_FEATURE_RO_INCOMPAT] |=
1239 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1240 fs->super->s_checksum_seed = 0;
1241 ext2fs_clear_feature_csum_seed(fs->super);
1242 }
1243
1244 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1245 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1246 /* Do not enable uninit_bg when metadata_csum enabled */
1247 if (ext2fs_has_feature_metadata_csum(fs->super))
1248 ext2fs_clear_feature_gdt_csum(fs->super);
1249 else
1250 enable_uninit_bg(fs);
1251 }
1252
1253 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1254 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1255 err = disable_uninit_bg(fs,
1256 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1257 if (err)
1258 return 1;
1259 }
1260
1261 /*
1262 * We don't actually toggle 64bit; resize2fs does that. But this
1263 * must come after the metadata_csum feature_on so that it won't
1264 * complain about the lack of 64bit.
1265 */
1266 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1267 EXT4_FEATURE_INCOMPAT_64BIT)) {
1268 if (mount_flags & EXT2_MF_MOUNTED) {
1269 fprintf(stderr, _("Cannot enable 64-bit mode "
1270 "while mounted!\n"));
1271 exit(1);
1272 }
1273 ext2fs_clear_feature_64bit(sb);
1274 feature_64bit = 1;
1275 }
1276 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1277 EXT4_FEATURE_INCOMPAT_64BIT)) {
1278 if (mount_flags & EXT2_MF_MOUNTED) {
1279 fprintf(stderr, _("Cannot disable 64-bit mode "
1280 "while mounted!\n"));
1281 exit(1);
1282 }
1283 ext2fs_set_feature_64bit(sb);
1284 feature_64bit = -1;
1285 }
1286
1287 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1288 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1289 /*
1290 * Set the Q_flag here and handle the quota options in the code
1291 * below.
1292 */
1293 if (!Q_flag) {
1294 Q_flag = 1;
1295 /* Enable usr/grp quota by default */
1296 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1297 if (qtype != PRJQUOTA)
1298 quota_enable[qtype] = QOPT_ENABLE;
1299 else
1300 quota_enable[qtype] = QOPT_DISABLE;
1301 }
1302 }
1303 ext2fs_clear_feature_quota(sb);
1304 }
1305
1306 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1307 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1308 if (!Q_flag && !ext2fs_has_feature_quota(sb))
1309 fputs(_("\nWarning: enabled project without quota together\n"),
1310 stderr);
1311 Q_flag = 1;
1312 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1313 }
1314
1315 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1316 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1317 /*
1318 * Set the Q_flag here and handle the quota options in the code
1319 * below.
1320 */
1321 if (Q_flag)
1322 fputs(_("\nWarning: '^quota' option overrides '-Q'"
1323 "arguments.\n"), stderr);
1324 Q_flag = 1;
1325 /* Disable all quota by default */
1326 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1327 quota_enable[qtype] = QOPT_DISABLE;
1328 }
1329
1330 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1331 fs->super->s_encrypt_algos[0] =
1332 EXT4_ENCRYPTION_MODE_AES_256_XTS;
1333 fs->super->s_encrypt_algos[1] =
1334 EXT4_ENCRYPTION_MODE_AES_256_CTS;
1335 }
1336
1337 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1338 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1339 if (!ext2fs_has_feature_metadata_csum(sb)) {
1340 fputs(_("Setting feature 'metadata_csum_seed' "
1341 "is only supported\non filesystems with "
1342 "the metadata_csum feature enabled.\n"),
1343 stderr);
1344 return 1;
1345 }
1346 try_confirm_csum_seed_support();
1347 fs->super->s_checksum_seed = fs->csum_seed;
1348 }
1349
1350 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1351 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1352 __le32 uuid_seed;
1353
1354 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1355 sizeof(fs->super->s_uuid));
1356 if (fs->super->s_checksum_seed != uuid_seed &&
1357 (mount_flags & EXT2_MF_MOUNTED)) {
1358 fputs(_("UUID has changed since enabling "
1359 "metadata_csum. Filesystem must be unmounted "
1360 "\nto safely rewrite all metadata to "
1361 "match the new UUID.\n"), stderr);
1362 return 1;
1363 }
1364
1365 rewrite_checksums = 1;
1366 }
1367
1368 if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1369 (sb->s_feature_compat || sb->s_feature_ro_compat ||
1370 sb->s_feature_incompat))
1371 ext2fs_update_dynamic_rev(fs);
1372
1373 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1374 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1375 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1376 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1377 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1378 EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1379 FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1380 EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1381 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1382 EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1383 request_fsck_afterwards(fs);
1384
1385 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1386 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1387 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1388 ext2fs_mark_super_dirty(fs);
1389
1390 return 0;
1391 }
1392
1393 /*
1394 * Add a journal to the filesystem.
1395 */
1396 static int add_journal(ext2_filsys fs)
1397 {
1398 unsigned long journal_blocks;
1399 errcode_t retval;
1400 ext2_filsys jfs;
1401 io_manager io_ptr;
1402
1403 if (ext2fs_has_feature_journal(fs->super)) {
1404 fputs(_("The filesystem already has a journal.\n"), stderr);
1405 goto err;
1406 }
1407 if (journal_device) {
1408 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1409 NULL))
1410 proceed_question(-1);
1411 check_mount(journal_device, 0, _("journal"));
1412 #ifdef CONFIG_TESTIO_DEBUG
1413 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1414 io_ptr = test_io_manager;
1415 test_io_backing_manager = unix_io_manager;
1416 } else
1417 #endif
1418 io_ptr = unix_io_manager;
1419 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1420 EXT2_FLAG_JOURNAL_DEV_OK, 0,
1421 fs->blocksize, io_ptr, &jfs);
1422 if (retval) {
1423 com_err(program_name, retval,
1424 _("\n\twhile trying to open journal on %s\n"),
1425 journal_device);
1426 goto err;
1427 }
1428 printf(_("Creating journal on device %s: "),
1429 journal_device);
1430 fflush(stdout);
1431
1432 retval = ext2fs_add_journal_device(fs, jfs);
1433 ext2fs_close_free(&jfs);
1434 if (retval) {
1435 com_err(program_name, retval,
1436 _("while adding filesystem to journal on %s"),
1437 journal_device);
1438 goto err;
1439 }
1440 fputs(_("done\n"), stdout);
1441 } else if (journal_size) {
1442 fputs(_("Creating journal inode: "), stdout);
1443 fflush(stdout);
1444 journal_blocks = figure_journal_size(journal_size, fs);
1445
1446 if (journal_location_string)
1447 journal_location =
1448 parse_num_blocks2(journal_location_string,
1449 fs->super->s_log_block_size);
1450 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
1451 journal_location,
1452 journal_flags);
1453 if (retval) {
1454 fprintf(stderr, "\n");
1455 com_err(program_name, retval, "%s",
1456 _("\n\twhile trying to create journal file"));
1457 return retval;
1458 } else
1459 fputs(_("done\n"), stdout);
1460 /*
1461 * If the filesystem wasn't mounted, we need to force
1462 * the block group descriptors out.
1463 */
1464 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1465 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1466 }
1467 print_check_message(fs->super->s_max_mnt_count,
1468 fs->super->s_checkinterval);
1469 return 0;
1470
1471 err:
1472 free(journal_device);
1473 return 1;
1474 }
1475
1476 static void handle_quota_options(ext2_filsys fs)
1477 {
1478 quota_ctx_t qctx;
1479 ext2_ino_t qf_ino;
1480 enum quota_type qtype;
1481 int enable = 0;
1482
1483 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1484 if (quota_enable[qtype] != 0)
1485 break;
1486 if (qtype == MAXQUOTAS)
1487 /* Nothing to do. */
1488 return;
1489
1490 quota_init_context(&qctx, fs, QUOTA_ALL_BIT);
1491 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1492 if (quota_enable[qtype] == QOPT_ENABLE) {
1493 enable = 1;
1494 break;
1495 }
1496 }
1497 if (enable)
1498 quota_compute_usage(qctx);
1499
1500 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1501 if (quota_enable[qtype] == QOPT_ENABLE &&
1502 *quota_sb_inump(fs->super, qtype) == 0) {
1503 if ((qf_ino = quota_file_exists(fs, qtype)) > 0)
1504 quota_update_limits(qctx, qf_ino, qtype);
1505 quota_write_inode(qctx, 1 << qtype);
1506 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1507 quota_remove_inode(fs, qtype);
1508 }
1509 }
1510
1511 quota_release_context(&qctx);
1512
1513 if (enable) {
1514 ext2fs_set_feature_quota(fs->super);
1515 ext2fs_mark_super_dirty(fs);
1516 } else {
1517 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1518 if (*quota_sb_inump(fs->super, qtype) != 0)
1519 break;
1520 if (qtype == MAXQUOTAS) {
1521 fs->super->s_feature_ro_compat &=
1522 ~EXT4_FEATURE_RO_COMPAT_QUOTA;
1523 ext2fs_mark_super_dirty(fs);
1524 }
1525 }
1526
1527 return;
1528 }
1529
1530 static int option_handle_function(char *token, void *data)
1531 {
1532 if (strncmp(token, "usr", 3) == 0) {
1533 quota_enable[USRQUOTA] = QOPT_ENABLE;
1534 } else if (strncmp(token, "^usr", 4) == 0) {
1535 quota_enable[USRQUOTA] = QOPT_DISABLE;
1536 } else if (strncmp(token, "grp", 3) == 0) {
1537 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1538 } else if (strncmp(token, "^grp", 4) == 0) {
1539 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1540 } else if (strncmp(token, "prj", 3) == 0) {
1541 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1542 } else if (strncmp(token, "^prj", 4) == 0) {
1543 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1544 } else {
1545 fputs(_("\nBad quota options specified.\n\n"
1546 "Following valid quota options are available "
1547 "(pass by separating with comma):\n"
1548 "\t[^]usr[quota]\n"
1549 "\t[^]grp[quota]\n"
1550 "\t[^]prj[quota]\n"
1551 "\n\n"), stderr);
1552 return 1;
1553 }
1554 return 0;
1555 }
1556
1557 static void parse_e2label_options(int argc, char ** argv)
1558 {
1559 if ((argc < 2) || (argc > 3)) {
1560 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1561 exit(1);
1562 }
1563 io_options = strchr(argv[1], '?');
1564 if (io_options)
1565 *io_options++ = 0;
1566 device_name = blkid_get_devname(NULL, argv[1], NULL);
1567 if (!device_name) {
1568 com_err("e2label", 0, _("Unable to resolve '%s'"),
1569 argv[1]);
1570 exit(1);
1571 }
1572 open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
1573 if (argc == 3) {
1574 open_flag |= EXT2_FLAG_RW;
1575 L_flag = 1;
1576 new_label = argv[2];
1577 } else
1578 print_label++;
1579 }
1580
1581 static time_t parse_time(char *str)
1582 {
1583 struct tm ts;
1584
1585 if (strcmp(str, "now") == 0) {
1586 return (time(0));
1587 }
1588 memset(&ts, 0, sizeof(ts));
1589 #ifdef HAVE_STRPTIME
1590 strptime(str, "%Y%m%d%H%M%S", &ts);
1591 #else
1592 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1593 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1594 ts.tm_year -= 1900;
1595 ts.tm_mon -= 1;
1596 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1597 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1598 ts.tm_min > 59 || ts.tm_sec > 61)
1599 ts.tm_mday = 0;
1600 #endif
1601 if (ts.tm_mday == 0) {
1602 com_err(program_name, 0,
1603 _("Couldn't parse date/time specifier: %s"),
1604 str);
1605 usage();
1606 }
1607 ts.tm_isdst = -1;
1608 return (mktime(&ts));
1609 }
1610
1611 static void parse_tune2fs_options(int argc, char **argv)
1612 {
1613 int c;
1614 char *tmp;
1615 struct group *gr;
1616 struct passwd *pw;
1617 int ret;
1618 char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1619
1620 open_flag = 0;
1621 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1622 while ((c = getopt(argc, argv, optstring)) != EOF)
1623 switch (c) {
1624 case 'c':
1625 max_mount_count = strtol(optarg, &tmp, 0);
1626 if (*tmp || max_mount_count > 16000) {
1627 com_err(program_name, 0,
1628 _("bad mounts count - %s"),
1629 optarg);
1630 usage();
1631 }
1632 if (max_mount_count == 0)
1633 max_mount_count = -1;
1634 c_flag = 1;
1635 open_flag = EXT2_FLAG_RW;
1636 break;
1637 case 'C':
1638 mount_count = strtoul(optarg, &tmp, 0);
1639 if (*tmp || mount_count > 16000) {
1640 com_err(program_name, 0,
1641 _("bad mounts count - %s"),
1642 optarg);
1643 usage();
1644 }
1645 C_flag = 1;
1646 open_flag = EXT2_FLAG_RW;
1647 break;
1648 case 'e':
1649 if (strcmp(optarg, "continue") == 0)
1650 errors = EXT2_ERRORS_CONTINUE;
1651 else if (strcmp(optarg, "remount-ro") == 0)
1652 errors = EXT2_ERRORS_RO;
1653 else if (strcmp(optarg, "panic") == 0)
1654 errors = EXT2_ERRORS_PANIC;
1655 else {
1656 com_err(program_name, 0,
1657 _("bad error behavior - %s"),
1658 optarg);
1659 usage();
1660 }
1661 e_flag = 1;
1662 open_flag = EXT2_FLAG_RW;
1663 break;
1664 case 'E':
1665 extended_cmd = optarg;
1666 open_flag |= EXT2_FLAG_RW;
1667 break;
1668 case 'f': /* Force */
1669 f_flag++;
1670 break;
1671 case 'g':
1672 resgid = strtoul(optarg, &tmp, 0);
1673 if (*tmp) {
1674 gr = getgrnam(optarg);
1675 if (gr == NULL)
1676 tmp = optarg;
1677 else {
1678 resgid = gr->gr_gid;
1679 *tmp = 0;
1680 }
1681 }
1682 if (*tmp) {
1683 com_err(program_name, 0,
1684 _("bad gid/group name - %s"),
1685 optarg);
1686 usage();
1687 }
1688 g_flag = 1;
1689 open_flag = EXT2_FLAG_RW;
1690 break;
1691 case 'i':
1692 interval = strtoul(optarg, &tmp, 0);
1693 switch (*tmp) {
1694 case 's':
1695 tmp++;
1696 break;
1697 case '\0':
1698 case 'd':
1699 case 'D': /* days */
1700 interval *= 86400;
1701 if (*tmp != '\0')
1702 tmp++;
1703 break;
1704 case 'm':
1705 case 'M': /* months! */
1706 interval *= 86400 * 30;
1707 tmp++;
1708 break;
1709 case 'w':
1710 case 'W': /* weeks */
1711 interval *= 86400 * 7;
1712 tmp++;
1713 break;
1714 }
1715 if (*tmp) {
1716 com_err(program_name, 0,
1717 _("bad interval - %s"), optarg);
1718 usage();
1719 }
1720 i_flag = 1;
1721 open_flag = EXT2_FLAG_RW;
1722 break;
1723 case 'j':
1724 if (!journal_size)
1725 journal_size = -1;
1726 open_flag = EXT2_FLAG_RW;
1727 break;
1728 case 'J':
1729 parse_journal_opts(optarg);
1730 open_flag = EXT2_FLAG_RW;
1731 break;
1732 case 'l':
1733 l_flag = 1;
1734 break;
1735 case 'L':
1736 new_label = optarg;
1737 L_flag = 1;
1738 open_flag |= EXT2_FLAG_RW |
1739 EXT2_FLAG_JOURNAL_DEV_OK;
1740 break;
1741 case 'm':
1742 reserved_ratio = strtod(optarg, &tmp);
1743 if (*tmp || reserved_ratio > 50 ||
1744 reserved_ratio < 0) {
1745 com_err(program_name, 0,
1746 _("bad reserved block ratio - %s"),
1747 optarg);
1748 usage();
1749 }
1750 m_flag = 1;
1751 open_flag = EXT2_FLAG_RW;
1752 break;
1753 case 'M':
1754 new_last_mounted = optarg;
1755 M_flag = 1;
1756 open_flag = EXT2_FLAG_RW;
1757 break;
1758 case 'o':
1759 if (mntopts_cmd) {
1760 com_err(program_name, 0, "%s",
1761 _("-o may only be specified once"));
1762 usage();
1763 }
1764 mntopts_cmd = optarg;
1765 open_flag = EXT2_FLAG_RW;
1766 break;
1767 case 'O':
1768 if (features_cmd) {
1769 com_err(program_name, 0, "%s",
1770 _("-O may only be specified once"));
1771 usage();
1772 }
1773 features_cmd = optarg;
1774 open_flag = EXT2_FLAG_RW;
1775 break;
1776 case 'Q':
1777 Q_flag = 1;
1778 ret = parse_quota_opts(optarg, option_handle_function,
1779 NULL);
1780 if (ret)
1781 exit(1);
1782 open_flag = EXT2_FLAG_RW;
1783 break;
1784 case 'r':
1785 reserved_blocks = strtoul(optarg, &tmp, 0);
1786 if (*tmp) {
1787 com_err(program_name, 0,
1788 _("bad reserved blocks count - %s"),
1789 optarg);
1790 usage();
1791 }
1792 r_flag = 1;
1793 open_flag = EXT2_FLAG_RW;
1794 break;
1795 case 's': /* Deprecated */
1796 s_flag = atoi(optarg);
1797 open_flag = EXT2_FLAG_RW;
1798 break;
1799 case 'T':
1800 T_flag = 1;
1801 last_check_time = parse_time(optarg);
1802 open_flag = EXT2_FLAG_RW;
1803 break;
1804 case 'u':
1805 resuid = strtoul(optarg, &tmp, 0);
1806 if (*tmp) {
1807 pw = getpwnam(optarg);
1808 if (pw == NULL)
1809 tmp = optarg;
1810 else {
1811 resuid = pw->pw_uid;
1812 *tmp = 0;
1813 }
1814 }
1815 if (*tmp) {
1816 com_err(program_name, 0,
1817 _("bad uid/user name - %s"),
1818 optarg);
1819 usage();
1820 }
1821 u_flag = 1;
1822 open_flag = EXT2_FLAG_RW;
1823 break;
1824 case 'U':
1825 new_UUID = optarg;
1826 U_flag = 1;
1827 open_flag = EXT2_FLAG_RW |
1828 EXT2_FLAG_JOURNAL_DEV_OK;
1829 break;
1830 case 'I':
1831 new_inode_size = strtoul(optarg, &tmp, 0);
1832 if (*tmp) {
1833 com_err(program_name, 0,
1834 _("bad inode size - %s"),
1835 optarg);
1836 usage();
1837 }
1838 if (!((new_inode_size &
1839 (new_inode_size - 1)) == 0)) {
1840 com_err(program_name, 0,
1841 _("Inode size must be a "
1842 "power of two- %s"),
1843 optarg);
1844 usage();
1845 }
1846 open_flag = EXT2_FLAG_RW;
1847 I_flag = 1;
1848 break;
1849 case 'z':
1850 undo_file = optarg;
1851 break;
1852 default:
1853 usage();
1854 }
1855 if (optind < argc - 1 || optind == argc)
1856 usage();
1857 if (!open_flag && !l_flag)
1858 usage();
1859 io_options = strchr(argv[optind], '?');
1860 if (io_options)
1861 *io_options++ = 0;
1862 device_name = blkid_get_devname(NULL, argv[optind], NULL);
1863 if (!device_name) {
1864 com_err(program_name, 0, _("Unable to resolve '%s'"),
1865 argv[optind]);
1866 exit(1);
1867 }
1868 }
1869
1870 #ifdef CONFIG_BUILD_FINDFS
1871 void do_findfs(int argc, char **argv)
1872 {
1873 char *dev;
1874
1875 if ((argc != 2) ||
1876 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
1877 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
1878 exit(2);
1879 }
1880 dev = blkid_get_devname(NULL, argv[1], NULL);
1881 if (!dev) {
1882 com_err("findfs", 0, _("Unable to resolve '%s'"),
1883 argv[1]);
1884 exit(1);
1885 }
1886 puts(dev);
1887 exit(0);
1888 }
1889 #endif
1890
1891 static int parse_extended_opts(ext2_filsys fs, const char *opts)
1892 {
1893 char *buf, *token, *next, *p, *arg;
1894 int len, hash_alg;
1895 int r_usage = 0;
1896
1897 len = strlen(opts);
1898 buf = malloc(len+1);
1899 if (!buf) {
1900 fprintf(stderr, "%s",
1901 _("Couldn't allocate memory to parse options!\n"));
1902 return 1;
1903 }
1904 strcpy(buf, opts);
1905 for (token = buf; token && *token; token = next) {
1906 p = strchr(token, ',');
1907 next = 0;
1908 if (p) {
1909 *p = 0;
1910 next = p+1;
1911 }
1912 arg = strchr(token, '=');
1913 if (arg) {
1914 *arg = 0;
1915 arg++;
1916 }
1917 if (strcmp(token, "clear-mmp") == 0 ||
1918 strcmp(token, "clear_mmp") == 0) {
1919 clear_mmp = 1;
1920 } else if (strcmp(token, "mmp_update_interval") == 0) {
1921 unsigned long intv;
1922 if (!arg) {
1923 r_usage++;
1924 continue;
1925 }
1926 intv = strtoul(arg, &p, 0);
1927 if (*p) {
1928 fprintf(stderr,
1929 _("Invalid mmp_update_interval: %s\n"),
1930 arg);
1931 r_usage++;
1932 continue;
1933 }
1934 if (intv == 0) {
1935 intv = EXT4_MMP_UPDATE_INTERVAL;
1936 } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
1937 fprintf(stderr,
1938 _("mmp_update_interval too big: %lu\n"),
1939 intv);
1940 r_usage++;
1941 continue;
1942 }
1943 printf(P_("Setting multiple mount protection update "
1944 "interval to %lu second\n",
1945 "Setting multiple mount protection update "
1946 "interval to %lu seconds\n", intv),
1947 intv);
1948 fs->super->s_mmp_update_interval = intv;
1949 ext2fs_mark_super_dirty(fs);
1950 } else if (!strcmp(token, "test_fs")) {
1951 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
1952 printf("Setting test filesystem flag\n");
1953 ext2fs_mark_super_dirty(fs);
1954 } else if (!strcmp(token, "^test_fs")) {
1955 fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
1956 printf("Clearing test filesystem flag\n");
1957 ext2fs_mark_super_dirty(fs);
1958 } else if (strcmp(token, "stride") == 0) {
1959 if (!arg) {
1960 r_usage++;
1961 continue;
1962 }
1963 stride = strtoul(arg, &p, 0);
1964 if (*p) {
1965 fprintf(stderr,
1966 _("Invalid RAID stride: %s\n"),
1967 arg);
1968 r_usage++;
1969 continue;
1970 }
1971 stride_set = 1;
1972 } else if (strcmp(token, "stripe-width") == 0 ||
1973 strcmp(token, "stripe_width") == 0) {
1974 if (!arg) {
1975 r_usage++;
1976 continue;
1977 }
1978 stripe_width = strtoul(arg, &p, 0);
1979 if (*p) {
1980 fprintf(stderr,
1981 _("Invalid RAID stripe-width: %s\n"),
1982 arg);
1983 r_usage++;
1984 continue;
1985 }
1986 stripe_width_set = 1;
1987 } else if (strcmp(token, "hash_alg") == 0 ||
1988 strcmp(token, "hash-alg") == 0) {
1989 if (!arg) {
1990 r_usage++;
1991 continue;
1992 }
1993 hash_alg = e2p_string2hash(arg);
1994 if (hash_alg < 0) {
1995 fprintf(stderr,
1996 _("Invalid hash algorithm: %s\n"),
1997 arg);
1998 r_usage++;
1999 continue;
2000 }
2001 fs->super->s_def_hash_version = hash_alg;
2002 printf(_("Setting default hash algorithm "
2003 "to %s (%d)\n"),
2004 arg, hash_alg);
2005 ext2fs_mark_super_dirty(fs);
2006 } else if (!strcmp(token, "mount_opts")) {
2007 if (!arg) {
2008 r_usage++;
2009 continue;
2010 }
2011 if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
2012 fprintf(stderr,
2013 "Extended mount options too long\n");
2014 continue;
2015 }
2016 ext_mount_opts = strdup(arg);
2017 } else
2018 r_usage++;
2019 }
2020 if (r_usage) {
2021 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
2022 "Extended options are separated by commas, "
2023 "and may take an argument which\n"
2024 "\tis set off by an equals ('=') sign.\n\n"
2025 "Valid extended options are:\n"
2026 "\tclear_mmp\n"
2027 "\thash_alg=<hash algorithm>\n"
2028 "\tmount_opts=<extended default mount options>\n"
2029 "\tstride=<RAID per-disk chunk size in blocks>\n"
2030 "\tstripe_width=<RAID stride*data disks in blocks>\n"
2031 "\ttest_fs\n"
2032 "\t^test_fs\n"));
2033 free(buf);
2034 return 1;
2035 }
2036 free(buf);
2037
2038 return 0;
2039 }
2040
2041 /*
2042 * Fill in the block bitmap bmap with the information regarding the
2043 * blocks to be moved
2044 */
2045 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2046 ext2fs_block_bitmap bmap)
2047 {
2048 dgrp_t i;
2049 int retval;
2050 ext2_badblocks_list bb_list = 0;
2051 blk64_t j, needed_blocks = 0;
2052 blk64_t start_blk, end_blk;
2053
2054 retval = ext2fs_read_bb_inode(fs, &bb_list);
2055 if (retval)
2056 return retval;
2057
2058 for (i = 0; i < fs->group_desc_count; i++) {
2059 start_blk = ext2fs_inode_table_loc(fs, i) +
2060 fs->inode_blocks_per_group;
2061
2062 end_blk = ext2fs_inode_table_loc(fs, i) +
2063 new_ino_blks_per_grp;
2064
2065 for (j = start_blk; j < end_blk; j++) {
2066 if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2067 /*
2068 * IF the block is a bad block we fail
2069 */
2070 if (ext2fs_badblocks_list_test(bb_list, j)) {
2071 ext2fs_badblocks_list_free(bb_list);
2072 return ENOSPC;
2073 }
2074
2075 ext2fs_mark_block_bitmap2(bmap, j);
2076 } else {
2077 /*
2078 * We are going to use this block for
2079 * inode table. So mark them used.
2080 */
2081 ext2fs_mark_block_bitmap2(fs->block_map, j);
2082 }
2083 }
2084 needed_blocks += end_blk - start_blk;
2085 }
2086
2087 ext2fs_badblocks_list_free(bb_list);
2088 if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2089 return ENOSPC;
2090
2091 return 0;
2092 }
2093
2094 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2095 {
2096 dgrp_t group;
2097 group = ext2fs_group_of_blk2(fs, blk);
2098 if (ext2fs_block_bitmap_loc(fs, group) == blk)
2099 return 1;
2100 if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2101 return 1;
2102 return 0;
2103 }
2104
2105 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2106 {
2107 blk64_t start_blk, end_blk;
2108 start_blk = fs->super->s_first_data_block +
2109 EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2110 /*
2111 * We cannot get new block beyond end_blk for for the last block group
2112 * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2113 */
2114 end_blk = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2115 if (blk >= start_blk && blk <= end_blk)
2116 return 1;
2117 return 0;
2118 }
2119
2120 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2121 {
2122
2123 char *buf;
2124 dgrp_t group = 0;
2125 errcode_t retval;
2126 int meta_data = 0;
2127 blk64_t blk, new_blk, goal;
2128 struct blk_move *bmv;
2129
2130 retval = ext2fs_get_mem(fs->blocksize, &buf);
2131 if (retval)
2132 return retval;
2133
2134 for (new_blk = blk = fs->super->s_first_data_block;
2135 blk < ext2fs_blocks_count(fs->super); blk++) {
2136 if (!ext2fs_test_block_bitmap2(bmap, blk))
2137 continue;
2138
2139 if (ext2fs_is_meta_block(fs, blk)) {
2140 /*
2141 * If the block is mapping a fs meta data block
2142 * like group desc/block bitmap/inode bitmap. We
2143 * should find a block in the same group and fix
2144 * the respective fs metadata pointers. Otherwise
2145 * fail
2146 */
2147 group = ext2fs_group_of_blk2(fs, blk);
2148 goal = ext2fs_group_first_block2(fs, group);
2149 meta_data = 1;
2150
2151 } else {
2152 goal = new_blk;
2153 }
2154 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2155 if (retval)
2156 goto err_out;
2157
2158 /* new fs meta data block should be in the same group */
2159 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2160 retval = ENOSPC;
2161 goto err_out;
2162 }
2163
2164 /* Mark this block as allocated */
2165 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2166
2167 /* Add it to block move list */
2168 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2169 if (retval)
2170 goto err_out;
2171
2172 bmv->old_loc = blk;
2173 bmv->new_loc = new_blk;
2174
2175 list_add(&(bmv->list), &blk_move_list);
2176
2177 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2178 if (retval)
2179 goto err_out;
2180
2181 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2182 if (retval)
2183 goto err_out;
2184 }
2185
2186 err_out:
2187 ext2fs_free_mem(&buf);
2188 return retval;
2189 }
2190
2191 static blk64_t translate_block(blk64_t blk)
2192 {
2193 struct list_head *entry;
2194 struct blk_move *bmv;
2195
2196 list_for_each(entry, &blk_move_list) {
2197 bmv = list_entry(entry, struct blk_move, list);
2198 if (bmv->old_loc == blk)
2199 return bmv->new_loc;
2200 }
2201
2202 return 0;
2203 }
2204
2205 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2206 blk64_t *block_nr,
2207 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2208 blk64_t ref_block EXT2FS_ATTR((unused)),
2209 int ref_offset EXT2FS_ATTR((unused)),
2210 void *priv_data)
2211 {
2212 int ret = 0;
2213 blk64_t new_blk;
2214 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2215
2216 if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2217 return 0;
2218 new_blk = translate_block(*block_nr);
2219 if (new_blk) {
2220 *block_nr = new_blk;
2221 /*
2222 * This will force the ext2fs_write_inode in the iterator
2223 */
2224 ret |= BLOCK_CHANGED;
2225 }
2226
2227 return ret;
2228 }
2229
2230 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2231 {
2232 errcode_t retval = 0;
2233 ext2_ino_t ino;
2234 blk64_t blk;
2235 char *block_buf = 0;
2236 struct ext2_inode inode;
2237 ext2_inode_scan scan = NULL;
2238
2239 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2240 if (retval)
2241 return retval;
2242
2243 retval = ext2fs_open_inode_scan(fs, 0, &scan);
2244 if (retval)
2245 goto err_out;
2246
2247 while (1) {
2248 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2249 if (retval)
2250 goto err_out;
2251
2252 if (!ino)
2253 break;
2254
2255 if (inode.i_links_count == 0)
2256 continue; /* inode not in use */
2257
2258 /* FIXME!!
2259 * If we end up modifying the journal inode
2260 * the sb->s_jnl_blocks will differ. But a
2261 * subsequent e2fsck fixes that.
2262 * Do we need to fix this ??
2263 */
2264
2265 if (ext2fs_file_acl_block(fs, &inode) &&
2266 ext2fs_test_block_bitmap2(bmap,
2267 ext2fs_file_acl_block(fs, &inode))) {
2268 blk = translate_block(ext2fs_file_acl_block(fs,
2269 &inode));
2270 if (!blk)
2271 continue;
2272
2273 ext2fs_file_acl_block_set(fs, &inode, blk);
2274
2275 /*
2276 * Write the inode to disk so that inode table
2277 * resizing can work
2278 */
2279 retval = ext2fs_write_inode(fs, ino, &inode);
2280 if (retval)
2281 goto err_out;
2282 }
2283
2284 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2285 continue;
2286
2287 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2288 process_block, bmap);
2289 if (retval)
2290 goto err_out;
2291
2292 }
2293
2294 err_out:
2295 ext2fs_free_mem(&block_buf);
2296 ext2fs_close_inode_scan(scan);
2297
2298 return retval;
2299 }
2300
2301 /*
2302 * We need to scan for inode and block bitmaps that may need to be
2303 * moved. This can take place if the filesystem was formatted for
2304 * RAID arrays using the mke2fs's extended option "stride".
2305 */
2306 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2307 {
2308 dgrp_t i;
2309 blk64_t blk, new_blk;
2310
2311 for (i = 0; i < fs->group_desc_count; i++) {
2312 blk = ext2fs_block_bitmap_loc(fs, i);
2313 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2314 new_blk = translate_block(blk);
2315 if (!new_blk)
2316 continue;
2317 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2318 }
2319
2320 blk = ext2fs_inode_bitmap_loc(fs, i);
2321 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2322 new_blk = translate_block(blk);
2323 if (!new_blk)
2324 continue;
2325 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2326 }
2327 }
2328 return 0;
2329 }
2330
2331 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2332 {
2333 dgrp_t i;
2334 blk64_t blk;
2335 errcode_t retval;
2336 int new_ino_blks_per_grp;
2337 unsigned int j;
2338 char *old_itable = NULL, *new_itable = NULL;
2339 char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2340 unsigned long old_ino_size;
2341 int old_itable_size, new_itable_size;
2342
2343 old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2344 old_ino_size = EXT2_INODE_SIZE(fs->super);
2345
2346 new_ino_blks_per_grp = ext2fs_div_ceil(
2347 EXT2_INODES_PER_GROUP(fs->super) *
2348 new_ino_size,
2349 fs->blocksize);
2350
2351 new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2352
2353 retval = ext2fs_get_mem(old_itable_size, &old_itable);
2354 if (retval)
2355 return retval;
2356
2357 retval = ext2fs_get_mem(new_itable_size, &new_itable);
2358 if (retval)
2359 goto err_out;
2360
2361 tmp_old_itable = old_itable;
2362 tmp_new_itable = new_itable;
2363
2364 for (i = 0; i < fs->group_desc_count; i++) {
2365 blk = ext2fs_inode_table_loc(fs, i);
2366 retval = io_channel_read_blk64(fs->io, blk,
2367 fs->inode_blocks_per_group, old_itable);
2368 if (retval)
2369 goto err_out;
2370
2371 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2372 memcpy(new_itable, old_itable, old_ino_size);
2373
2374 memset(new_itable+old_ino_size, 0,
2375 new_ino_size - old_ino_size);
2376
2377 new_itable += new_ino_size;
2378 old_itable += old_ino_size;
2379 }
2380
2381 /* reset the pointer */
2382 old_itable = tmp_old_itable;
2383 new_itable = tmp_new_itable;
2384
2385 retval = io_channel_write_blk64(fs->io, blk,
2386 new_ino_blks_per_grp, new_itable);
2387 if (retval)
2388 goto err_out;
2389 }
2390
2391 /* Update the meta data */
2392 fs->inode_blocks_per_group = new_ino_blks_per_grp;
2393 ext2fs_free_inode_cache(fs->icache);
2394 fs->icache = 0;
2395 fs->super->s_inode_size = new_ino_size;
2396
2397 err_out:
2398 if (old_itable)
2399 ext2fs_free_mem(&old_itable);
2400
2401 if (new_itable)
2402 ext2fs_free_mem(&new_itable);
2403
2404 return retval;
2405 }
2406
2407 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
2408 {
2409 blk64_t blk;
2410 ext2_ino_t ino;
2411 unsigned int group = 0;
2412 unsigned int count = 0;
2413 int total_free = 0;
2414 int group_free = 0;
2415
2416 /*
2417 * First calculate the block statistics
2418 */
2419 for (blk = fs->super->s_first_data_block;
2420 blk < ext2fs_blocks_count(fs->super); blk++) {
2421 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
2422 group_free++;
2423 total_free++;
2424 }
2425 count++;
2426 if ((count == fs->super->s_blocks_per_group) ||
2427 (blk == ext2fs_blocks_count(fs->super)-1)) {
2428 ext2fs_bg_free_blocks_count_set(fs, group++,
2429 group_free);
2430 count = 0;
2431 group_free = 0;
2432 }
2433 }
2434 total_free = EXT2FS_C2B(fs, total_free);
2435 ext2fs_free_blocks_count_set(fs->super, total_free);
2436
2437 /*
2438 * Next, calculate the inode statistics
2439 */
2440 group_free = 0;
2441 total_free = 0;
2442 count = 0;
2443 group = 0;
2444
2445 /* Protect loop from wrap-around if s_inodes_count maxed */
2446 for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
2447 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
2448 group_free++;
2449 total_free++;
2450 }
2451 count++;
2452 if ((count == fs->super->s_inodes_per_group) ||
2453 (ino == fs->super->s_inodes_count)) {
2454 ext2fs_bg_free_inodes_count_set(fs, group++,
2455 group_free);
2456 count = 0;
2457 group_free = 0;
2458 }
2459 }
2460 fs->super->s_free_inodes_count = total_free;
2461 ext2fs_mark_super_dirty(fs);
2462 return 0;
2463 }
2464
2465 #define list_for_each_safe(pos, pnext, head) \
2466 for (pos = (head)->next, pnext = pos->next; pos != (head); \
2467 pos = pnext, pnext = pos->next)
2468
2469 static void free_blk_move_list(void)
2470 {
2471 struct list_head *entry, *tmp;
2472 struct blk_move *bmv;
2473
2474 list_for_each_safe(entry, tmp, &blk_move_list) {
2475 bmv = list_entry(entry, struct blk_move, list);
2476 list_del(entry);
2477 ext2fs_free_mem(&bmv);
2478 }
2479 return;
2480 }
2481
2482 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2483 {
2484 errcode_t retval;
2485 int new_ino_blks_per_grp;
2486 ext2fs_block_bitmap bmap;
2487
2488 retval = ext2fs_read_inode_bitmap(fs);
2489 if (retval) {
2490 fputs(_("Failed to read inode bitmap\n"), stderr);
2491 return retval;
2492 }
2493 retval = ext2fs_read_block_bitmap(fs);
2494 if (retval) {
2495 fputs(_("Failed to read block bitmap\n"), stderr);
2496 return retval;
2497 }
2498 INIT_LIST_HEAD(&blk_move_list);
2499
2500
2501 new_ino_blks_per_grp = ext2fs_div_ceil(
2502 EXT2_INODES_PER_GROUP(fs->super)*
2503 new_size,
2504 fs->blocksize);
2505
2506 /* We may change the file system.
2507 * Mark the file system as invalid so that
2508 * the user is prompted to run fsck.
2509 */
2510 fs->super->s_state &= ~EXT2_VALID_FS;
2511
2512 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2513 &bmap);
2514 if (retval) {
2515 fputs(_("Failed to allocate block bitmap when "
2516 "increasing inode size\n"), stderr);
2517 return retval;
2518 }
2519 retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2520 if (retval) {
2521 fputs(_("Not enough space to increase inode size \n"), stderr);
2522 goto err_out;
2523 }
2524 retval = move_block(fs, bmap);
2525 if (retval) {
2526 fputs(_("Failed to relocate blocks during inode resize \n"),
2527 stderr);
2528 goto err_out;
2529 }
2530 retval = inode_scan_and_fix(fs, bmap);
2531 if (retval)
2532 goto err_out_undo;
2533
2534 retval = group_desc_scan_and_fix(fs, bmap);
2535 if (retval)
2536 goto err_out_undo;
2537
2538 retval = expand_inode_table(fs, new_size);
2539 if (retval)
2540 goto err_out_undo;
2541
2542 ext2fs_calculate_summary_stats(fs);
2543
2544 fs->super->s_state |= EXT2_VALID_FS;
2545 /* mark super block and block bitmap as dirty */
2546 ext2fs_mark_super_dirty(fs);
2547 ext2fs_mark_bb_dirty(fs);
2548
2549 err_out:
2550 free_blk_move_list();
2551 ext2fs_free_block_bitmap(bmap);
2552
2553 return retval;
2554
2555 err_out_undo:
2556 free_blk_move_list();
2557 ext2fs_free_block_bitmap(bmap);
2558 fputs(_("Error in resizing the inode size.\n"
2559 "Run e2undo to undo the "
2560 "file system changes. \n"), stderr);
2561
2562 return retval;
2563 }
2564
2565 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2566 {
2567 errcode_t retval = 0;
2568 const char *tdb_dir;
2569 char *tdb_file = NULL;
2570 char *dev_name, *tmp_name;
2571
2572 /* (re)open a specific undo file */
2573 if (undo_file && undo_file[0] != 0) {
2574 retval = set_undo_io_backing_manager(*io_ptr);
2575 if (retval)
2576 goto err;
2577 *io_ptr = undo_io_manager;
2578 retval = set_undo_io_backup_file(undo_file);
2579 if (retval)
2580 goto err;
2581 printf(_("Overwriting existing filesystem; this can be undone "
2582 "using the command:\n"
2583 " e2undo %s %s\n\n"),
2584 undo_file, name);
2585 return retval;
2586 }
2587
2588 /*
2589 * Configuration via a conf file would be
2590 * nice
2591 */
2592 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2593 if (!tdb_dir)
2594 tdb_dir = "/var/lib/e2fsprogs";
2595
2596 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2597 access(tdb_dir, W_OK))
2598 return 0;
2599
2600 tmp_name = strdup(name);
2601 if (!tmp_name)
2602 goto errout;
2603 dev_name = basename(tmp_name);
2604 tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2605 if (!tdb_file) {
2606 free(tmp_name);
2607 goto errout;
2608 }
2609 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2610 free(tmp_name);
2611
2612 if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2613 retval = errno;
2614 com_err(program_name, retval,
2615 _("while trying to delete %s"), tdb_file);
2616 goto errout;
2617 }
2618
2619 retval = set_undo_io_backing_manager(*io_ptr);
2620 if (retval)
2621 goto errout;
2622 *io_ptr = undo_io_manager;
2623 retval = set_undo_io_backup_file(tdb_file);
2624 if (retval)
2625 goto errout;
2626 printf(_("Overwriting existing filesystem; this can be undone "
2627 "using the command:\n"
2628 " e2undo %s %s\n\n"),
2629 tdb_file, name);
2630
2631 free(tdb_file);
2632 return 0;
2633 errout:
2634 free(tdb_file);
2635 err:
2636 com_err("tune2fs", retval, "while trying to setup undo file\n");
2637 return retval;
2638 }
2639
2640 static int
2641 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2642 {
2643 int retval, nr_users, start;
2644 journal_superblock_t *jsb;
2645 ext2_filsys jfs;
2646 __u8 *j_uuid;
2647 char *journal_path;
2648 char uuid[UUID_STR_SIZE];
2649 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2650
2651 if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
2652 return 0;
2653
2654 uuid_unparse(sb->s_journal_uuid, uuid);
2655 journal_path = blkid_get_devname(NULL, "UUID", uuid);
2656 if (!journal_path)
2657 return 0;
2658
2659 retval = ext2fs_open2(journal_path, io_options,
2660 EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2661 0, 0, unix_io_manager, &jfs);
2662 if (retval) {
2663 com_err(program_name, retval,
2664 _("while trying to open %s"),
2665 journal_path);
2666 return retval;
2667 }
2668
2669 retval = get_journal_sb(jfs, buf);
2670 if (retval != 0) {
2671 if (retval == EXT2_ET_UNSUPP_FEATURE)
2672 fprintf(stderr, _("%s is not a journal device.\n"),
2673 journal_path);
2674 return retval;
2675 }
2676
2677 jsb = (journal_superblock_t *) buf;
2678 /* Find the filesystem UUID */
2679 nr_users = ntohl(jsb->s_nr_users);
2680
2681 j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2682 if (j_uuid == NULL) {
2683 fputs(_("Filesystem's UUID not found on journal device.\n"),
2684 stderr);
2685 return EXT2_ET_LOAD_EXT_JOURNAL;
2686 }
2687
2688 memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2689
2690 start = ext2fs_journal_sb_start(jfs->blocksize);
2691 /* Write back the journal superblock */
2692 retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2693 if (retval != 0) {
2694 com_err(program_name, retval,
2695 "while writing journal superblock.");
2696 return retval;
2697 }
2698
2699 ext2fs_close(jfs);
2700
2701 return 0;
2702 }
2703
2704 #ifndef BUILD_AS_LIB
2705 int main(int argc, char **argv)
2706 #else
2707 int tune2fs_main(int argc, char **argv)
2708 #endif /* BUILD_AS_LIB */
2709 {
2710 errcode_t retval;
2711 ext2_filsys fs;
2712 struct ext2_super_block *sb;
2713 io_manager io_ptr, io_ptr_orig = NULL;
2714 int rc = 0;
2715 char default_undo_file[1] = { 0 };
2716
2717 #ifdef ENABLE_NLS
2718 setlocale(LC_MESSAGES, "");
2719 setlocale(LC_CTYPE, "");
2720 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2721 textdomain(NLS_CAT_NAME);
2722 set_com_err_gettext(gettext);
2723 #endif
2724 if (argc && *argv)
2725 program_name = *argv;
2726 add_error_table(&et_ext2_error_table);
2727
2728 #ifdef CONFIG_BUILD_FINDFS
2729 if (strcmp(get_progname(argv[0]), "findfs") == 0)
2730 do_findfs(argc, argv);
2731 #endif
2732 if (strcmp(get_progname(argv[0]), "e2label") == 0)
2733 parse_e2label_options(argc, argv);
2734 else
2735 parse_tune2fs_options(argc, argv);
2736
2737 #ifdef CONFIG_TESTIO_DEBUG
2738 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2739 io_ptr = test_io_manager;
2740 test_io_backing_manager = unix_io_manager;
2741 } else
2742 #endif
2743 io_ptr = unix_io_manager;
2744
2745 retry_open:
2746 if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2747 open_flag |= EXT2_FLAG_SKIP_MMP;
2748
2749 open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_JOURNAL_DEV_OK;
2750
2751 /* keep the filesystem struct around to dump MMP data */
2752 open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2753
2754 retval = ext2fs_open2(device_name, io_options, open_flag,
2755 0, 0, io_ptr, &fs);
2756 if (retval) {
2757 com_err(program_name, retval,
2758 _("while trying to open %s"),
2759 device_name);
2760 if (retval == EXT2_ET_MMP_FSCK_ON ||
2761 retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2762 dump_mmp_msg(fs->mmp_buf,
2763 _("If you are sure the filesystem "
2764 "is not in use on any node, run:\n"
2765 "'tune2fs -f -E clear_mmp {device}'\n"));
2766 else if (retval == EXT2_ET_MMP_FAILED)
2767 dump_mmp_msg(fs->mmp_buf, NULL);
2768 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2769 fprintf(stderr,
2770 _("MMP block magic is bad. Try to fix it by "
2771 "running:\n'e2fsck -f %s'\n"), device_name);
2772 else if (retval == EXT2_ET_BAD_MAGIC)
2773 check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2774 else if (retval != EXT2_ET_MMP_FAILED)
2775 fprintf(stderr, "%s",
2776 _("Couldn't find valid filesystem superblock.\n"));
2777
2778 ext2fs_free(fs);
2779 exit(1);
2780 }
2781 if (ext2fs_has_feature_journal_dev(fs->super)) {
2782 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
2783 ext2fs_free(fs);
2784 exit(1);
2785 }
2786 fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
2787
2788 if (I_flag) {
2789 /*
2790 * Check the inode size is right so we can issue an
2791 * error message and bail before setting up the tdb
2792 * file.
2793 */
2794 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
2795 fprintf(stderr, _("The inode size is already %lu\n"),
2796 new_inode_size);
2797 rc = 1;
2798 goto closefs;
2799 }
2800 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
2801 fprintf(stderr, "%s",
2802 _("Shrinking inode size is not supported\n"));
2803 rc = 1;
2804 goto closefs;
2805 }
2806 if (new_inode_size > fs->blocksize) {
2807 fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
2808 new_inode_size, fs->blocksize);
2809 rc = 1;
2810 goto closefs;
2811 }
2812 check_fsck_needed(fs,
2813 _("Resizing inodes could take some time."));
2814 /*
2815 * If inode resize is requested use the
2816 * Undo I/O manager
2817 */
2818 undo_file = default_undo_file;
2819 }
2820
2821 /* Set up an undo file */
2822 if (undo_file && io_ptr_orig == NULL) {
2823 io_ptr_orig = io_ptr;
2824 retval = tune2fs_setup_tdb(device_name, &io_ptr);
2825 if (retval) {
2826 rc = 1;
2827 goto closefs;
2828 }
2829 if (io_ptr != io_ptr_orig) {
2830 ext2fs_close_free(&fs);
2831 goto retry_open;
2832 }
2833 }
2834
2835 sb = fs->super;
2836 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2837
2838 if (print_label) {
2839 /* For e2label emulation */
2840 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
2841 sb->s_volume_name);
2842 remove_error_table(&et_ext2_error_table);
2843 goto closefs;
2844 }
2845
2846 retval = ext2fs_check_if_mounted(device_name, &mount_flags);
2847 if (retval) {
2848 com_err("ext2fs_check_if_mount", retval,
2849 _("while determining whether %s is mounted."),
2850 device_name);
2851 rc = 1;
2852 goto closefs;
2853 }
2854 /* Normally we only need to write out the superblock */
2855 fs->flags |= EXT2_FLAG_SUPER_ONLY;
2856
2857 if (c_flag) {
2858 sb->s_max_mnt_count = max_mount_count;
2859 ext2fs_mark_super_dirty(fs);
2860 printf(_("Setting maximal mount count to %d\n"),
2861 max_mount_count);
2862 }
2863 if (C_flag) {
2864 sb->s_mnt_count = mount_count;
2865 ext2fs_mark_super_dirty(fs);
2866 printf(_("Setting current mount count to %d\n"), mount_count);
2867 }
2868 if (e_flag) {
2869 sb->s_errors = errors;
2870 ext2fs_mark_super_dirty(fs);
2871 printf(_("Setting error behavior to %d\n"), errors);
2872 }
2873 if (g_flag) {
2874 sb->s_def_resgid = resgid;
2875 ext2fs_mark_super_dirty(fs);
2876 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
2877 }
2878 if (i_flag) {
2879 if ((unsigned long long)interval >= (1ULL << 32)) {
2880 com_err(program_name, 0,
2881 _("interval between checks is too big (%lu)"),
2882 interval);
2883 rc = 1;
2884 goto closefs;
2885 }
2886 sb->s_checkinterval = interval;
2887 ext2fs_mark_super_dirty(fs);
2888 printf(_("Setting interval between checks to %lu seconds\n"),
2889 interval);
2890 }
2891 if (m_flag) {
2892 ext2fs_r_blocks_count_set(sb, reserved_ratio *
2893 ext2fs_blocks_count(sb) / 100.0);
2894 ext2fs_mark_super_dirty(fs);
2895 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
2896 reserved_ratio, ext2fs_r_blocks_count(sb));
2897 }
2898 if (r_flag) {
2899 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
2900 com_err(program_name, 0,
2901 _("reserved blocks count is too big (%llu)"),
2902 reserved_blocks);
2903 rc = 1;
2904 goto closefs;
2905 }
2906 ext2fs_r_blocks_count_set(sb, reserved_blocks);
2907 ext2fs_mark_super_dirty(fs);
2908 printf(_("Setting reserved blocks count to %llu\n"),
2909 reserved_blocks);
2910 }
2911 if (s_flag == 1) {
2912 if (ext2fs_has_feature_sparse_super(sb)) {
2913 fputs(_("\nThe filesystem already has sparse "
2914 "superblocks.\n"), stderr);
2915 } else if (ext2fs_has_feature_meta_bg(sb)) {
2916 fputs(_("\nSetting the sparse superblock flag not "
2917 "supported\nfor filesystems with "
2918 "the meta_bg feature enabled.\n"),
2919 stderr);
2920 rc = 1;
2921 goto closefs;
2922 } else {
2923 ext2fs_set_feature_sparse_super(sb);
2924 sb->s_state &= ~EXT2_VALID_FS;
2925 ext2fs_mark_super_dirty(fs);
2926 printf(_("\nSparse superblock flag set. %s"),
2927 _(please_fsck));
2928 }
2929 }
2930 if (s_flag == 0) {
2931 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
2932 stderr);
2933 rc = 1;
2934 goto closefs;
2935 }
2936 if (T_flag) {
2937 sb->s_lastcheck = last_check_time;
2938 ext2fs_mark_super_dirty(fs);
2939 printf(_("Setting time filesystem last checked to %s\n"),
2940 ctime(&last_check_time));
2941 }
2942 if (u_flag) {
2943 sb->s_def_resuid = resuid;
2944 ext2fs_mark_super_dirty(fs);
2945 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
2946 }
2947 if (L_flag) {
2948 if (strlen(new_label) > sizeof(sb->s_volume_name))
2949 fputs(_("Warning: label too long, truncating.\n"),
2950 stderr);
2951 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
2952 strncpy(sb->s_volume_name, new_label,
2953 sizeof(sb->s_volume_name));
2954 ext2fs_mark_super_dirty(fs);
2955 }
2956 if (M_flag) {
2957 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
2958 strncpy(sb->s_last_mounted, new_last_mounted,
2959 sizeof(sb->s_last_mounted));
2960 ext2fs_mark_super_dirty(fs);
2961 }
2962 if (mntopts_cmd) {
2963 rc = update_mntopts(fs, mntopts_cmd);
2964 if (rc)
2965 goto closefs;
2966 }
2967 if (features_cmd) {
2968 rc = update_feature_set(fs, features_cmd);
2969 if (rc)
2970 goto closefs;
2971 }
2972 if (extended_cmd) {
2973 rc = parse_extended_opts(fs, extended_cmd);
2974 if (rc)
2975 goto closefs;
2976 if (clear_mmp && !f_flag) {
2977 fputs(_("Error in using clear_mmp. "
2978 "It must be used with -f\n"),
2979 stderr);
2980 goto closefs;
2981 }
2982 }
2983 if (clear_mmp) {
2984 rc = ext2fs_mmp_clear(fs);
2985 goto closefs;
2986 }
2987 if (journal_size || journal_device) {
2988 rc = add_journal(fs);
2989 if (rc)
2990 goto closefs;
2991 }
2992
2993 if (Q_flag) {
2994 if (mount_flags & EXT2_MF_MOUNTED) {
2995 fputs(_("The quota feature may only be changed when "
2996 "the filesystem is unmounted.\n"), stderr);
2997 rc = 1;
2998 goto closefs;
2999 }
3000 handle_quota_options(fs);
3001 }
3002
3003 if (U_flag) {
3004 int set_csum = 0;
3005 dgrp_t i;
3006 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3007 __u8 old_uuid[UUID_SIZE];
3008
3009 if (ext2fs_has_group_desc_csum(fs)) {
3010 /*
3011 * Changing the UUID on a metadata_csum FS requires
3012 * rewriting all metadata, which can race with a
3013 * mounted fs. Don't allow that unless we're saving
3014 * the checksum seed.
3015 */
3016 if ((mount_flags & EXT2_MF_MOUNTED) &&
3017 !ext2fs_has_feature_csum_seed(fs->super) &&
3018 ext2fs_has_feature_metadata_csum(fs->super)) {
3019 fputs(_("The UUID may only be "
3020 "changed when the filesystem is "
3021 "unmounted.\n"), stderr);
3022 fputs(_("If you only use kernels newer than "
3023 "v4.4, run 'tune2fs -O "
3024 "metadata_csum_seed' and re-run this "
3025 "command.\n"), stderr);
3026 try_confirm_csum_seed_support();
3027 exit(1);
3028 }
3029 if (!ext2fs_has_feature_csum_seed(fs->super))
3030 check_fsck_needed(fs,
3031 _("Setting UUID on a checksummed "
3032 "filesystem could take some time."));
3033
3034 /*
3035 * Determine if the block group checksums are
3036 * correct so we know whether or not to set
3037 * them later on.
3038 */
3039 for (i = 0; i < fs->group_desc_count; i++)
3040 if (!ext2fs_group_desc_csum_verify(fs, i))
3041 break;
3042 if (i >= fs->group_desc_count)
3043 set_csum = 1;
3044 }
3045
3046 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
3047 if ((strcasecmp(new_UUID, "null") == 0) ||
3048 (strcasecmp(new_UUID, "clear") == 0)) {
3049 uuid_clear(sb->s_uuid);
3050 } else if (strcasecmp(new_UUID, "time") == 0) {
3051 uuid_generate_time(sb->s_uuid);
3052 } else if (strcasecmp(new_UUID, "random") == 0) {
3053 uuid_generate(sb->s_uuid);
3054 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
3055 com_err(program_name, 0, "%s",
3056 _("Invalid UUID format\n"));
3057 rc = 1;
3058 goto closefs;
3059 }
3060 ext2fs_init_csum_seed(fs);
3061 if (set_csum) {
3062 for (i = 0; i < fs->group_desc_count; i++)
3063 ext2fs_group_desc_csum_set(fs, i);
3064 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3065 }
3066
3067 /* If this is a journal dev, we need to copy UUID into jsb */
3068 if (!(rc = get_journal_sb(fs, buf))) {
3069 journal_superblock_t *jsb;
3070
3071 jsb = (journal_superblock_t *) buf;
3072 fputs(_("Need to update journal superblock.\n"), stdout);
3073 memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3074
3075 /* Writeback the journal superblock */
3076 if ((rc = io_channel_write_blk64(fs->io,
3077 ext2fs_journal_sb_start(fs->blocksize),
3078 -SUPERBLOCK_SIZE, buf)))
3079 goto closefs;
3080 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3081 goto closefs;
3082 else {
3083 rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3084
3085 if ((rc = fs_update_journal_user(sb, old_uuid)))
3086 goto closefs;
3087 }
3088
3089 ext2fs_mark_super_dirty(fs);
3090 if (ext2fs_has_feature_metadata_csum(fs->super) &&
3091 !ext2fs_has_feature_csum_seed(fs->super))
3092 rewrite_checksums = 1;
3093 }
3094
3095 if (I_flag) {
3096 if (mount_flags & EXT2_MF_MOUNTED) {
3097 fputs(_("The inode size may only be "
3098 "changed when the filesystem is "
3099 "unmounted.\n"), stderr);
3100 rc = 1;
3101 goto closefs;
3102 }
3103 if (ext2fs_has_feature_flex_bg(fs->super)) {
3104 fputs(_("Changing the inode size not supported for "
3105 "filesystems with the flex_bg\n"
3106 "feature enabled.\n"),
3107 stderr);
3108 rc = 1;
3109 goto closefs;
3110 }
3111 /*
3112 * We want to update group descriptor also
3113 * with the new free inode count
3114 */
3115 if (rewrite_checksums)
3116 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3117 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3118 retval = resize_inode(fs, new_inode_size);
3119 if (rewrite_checksums)
3120 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3121 if (retval == 0) {
3122 printf(_("Setting inode size %lu\n"),
3123 new_inode_size);
3124 rewrite_checksums = 1;
3125 } else {
3126 printf("%s", _("Failed to change inode size\n"));
3127 rc = 1;
3128 goto closefs;
3129 }
3130 }
3131
3132 if (rewrite_checksums)
3133 rewrite_metadata_checksums(fs);
3134
3135 if (l_flag)
3136 list_super(sb);
3137 if (stride_set) {
3138 sb->s_raid_stride = stride;
3139 ext2fs_mark_super_dirty(fs);
3140 printf(_("Setting stride size to %d\n"), stride);
3141 }
3142 if (stripe_width_set) {
3143 sb->s_raid_stripe_width = stripe_width;
3144 ext2fs_mark_super_dirty(fs);
3145 printf(_("Setting stripe width to %d\n"), stripe_width);
3146 }
3147 if (ext_mount_opts) {
3148 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3149 sizeof(fs->super->s_mount_opts));
3150 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3151 ext2fs_mark_super_dirty(fs);
3152 printf(_("Setting extended default mount options to '%s'\n"),
3153 ext_mount_opts);
3154 free(ext_mount_opts);
3155 }
3156
3157 #ifdef NO_RECOVERY
3158 /* Warn if file system needs recovery and it is opened for writing. */
3159 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3160 (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
3161 (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
3162 fprintf(stderr,
3163 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
3164 "\te2fsck -E journal_only %s\n\n"
3165 "then rerun this command. Otherwise, any changes made may be overwritten\n"
3166 "by journal recovery.\n"), device_name);
3167 }
3168 #else
3169 /* Recover the journal if possible. */
3170 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3171 ext2fs_has_feature_journal_needs_recovery(fs->super)) {
3172 errcode_t err;
3173
3174 printf(_("Recovering journal.\n"));
3175 err = ext2fs_run_ext3_journal(&fs);
3176 if (err) {
3177 com_err("tune2fs", err, "while recovering journal.\n");
3178 printf(_("Please run e2fsck -fy %s.\n"), argv[1]);
3179 goto closefs;
3180 }
3181 ext2fs_clear_feature_journal_needs_recovery(fs->super);
3182 ext2fs_mark_super_dirty(fs);
3183 }
3184 #endif
3185
3186 free(device_name);
3187 remove_error_table(&et_ext2_error_table);
3188
3189 closefs:
3190 if (rc) {
3191 ext2fs_mmp_stop(fs);
3192 #ifndef BUILD_AS_LIB
3193 exit(1);
3194 #endif
3195 }
3196
3197 convert_64bit(fs, feature_64bit);
3198 return (ext2fs_close_free(&fs) ? 1 : 0);
3199 }
Unnamed repository; edit this file 'description' to name the repository.