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rename libquota.a to libsupport.a
[thirdparty/e2fsprogs.git] / misc / tune2fs.c
1 /*
2 * tune2fs.c - Change the file system parameters on an ext2 file system
3 *
4 * Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
5 * Laboratoire MASI, Institut Blaise Pascal
6 * Universite Pierre et Marie Curie (Paris VI)
7 *
8 * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
9 *
10 * %Begin-Header%
11 * This file may be redistributed under the terms of the GNU Public
12 * License.
13 * %End-Header%
14 */
15
16 /*
17 * History:
18 * 93/06/01 - Creation
19 * 93/10/31 - Added the -c option to change the maximal mount counts
20 * 93/12/14 - Added -l flag to list contents of superblock
21 * M.J.E. Mol (marcel@duteca.et.tudelft.nl)
22 * F.W. ten Wolde (franky@duteca.et.tudelft.nl)
23 * 93/12/29 - Added the -e option to change errors behavior
24 * 94/02/27 - Ported to use the ext2fs library
25 * 94/03/06 - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
26 */
27
28 #define _XOPEN_SOURCE 600 /* for inclusion of strptime() */
29 #include "config.h"
30 #include <fcntl.h>
31 #include <grp.h>
32 #ifdef HAVE_GETOPT_H
33 #include <getopt.h>
34 #else
35 extern char *optarg;
36 extern int optind;
37 #endif
38 #include <pwd.h>
39 #include <stdio.h>
40 #ifdef HAVE_STDLIB_H
41 #include <stdlib.h>
42 #endif
43 #ifdef HAVE_STRINGS_H
44 #include <strings.h> /* for strcasecmp() */
45 #else
46 #define _BSD_SOURCE /* for inclusion of strcasecmp() via <string.h> */
47 #endif
48 #include <string.h>
49 #include <time.h>
50 #include <unistd.h>
51 #include <sys/types.h>
52 #include <libgen.h>
53 #include <limits.h>
54
55 #include "ext2fs/ext2_fs.h"
56 #include "ext2fs/ext2fs.h"
57 #include "ext2fs/kernel-jbd.h"
58 #include "et/com_err.h"
59 #include "uuid/uuid.h"
60 #include "e2p/e2p.h"
61 #include "util.h"
62 #include "plausible.h"
63 #include "blkid/blkid.h"
64 #include "support/quotaio.h"
65
66 #include "../version.h"
67 #include "nls-enable.h"
68
69 #define QOPT_ENABLE (1)
70 #define QOPT_DISABLE (-1)
71
72 extern int ask_yn(const char *string, int def);
73
74 const char *program_name = "tune2fs";
75 char *device_name;
76 char *new_label, *new_last_mounted, *new_UUID;
77 char *io_options;
78 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
79 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
80 static int I_flag;
81 static int clear_mmp;
82 static time_t last_check_time;
83 static int print_label;
84 static int max_mount_count, mount_count, mount_flags;
85 static unsigned long interval;
86 static blk64_t reserved_blocks;
87 static double reserved_ratio;
88 static unsigned long resgid, resuid;
89 static unsigned short errors;
90 static int open_flag;
91 static char *features_cmd;
92 static char *mntopts_cmd;
93 static int stride, stripe_width;
94 static int stride_set, stripe_width_set;
95 static char *extended_cmd;
96 static unsigned long new_inode_size;
97 static char *ext_mount_opts;
98 static int usrquota, grpquota;
99 static int rewrite_checksums;
100 static int feature_64bit;
101 static int fsck_requested;
102 static char *undo_file;
103
104 int journal_size, journal_flags;
105 char *journal_device;
106 static blk64_t journal_location = ~0LL;
107
108 static struct list_head blk_move_list;
109
110 struct blk_move {
111 struct list_head list;
112 blk64_t old_loc;
113 blk64_t new_loc;
114 };
115
116
117 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
118 static const char *please_dir_fsck =
119 N_("Please run e2fsck -D on the filesystem.\n");
120
121 #ifdef CONFIG_BUILD_FINDFS
122 void do_findfs(int argc, char **argv);
123 #endif
124
125 static void usage(void)
126 {
127 fprintf(stderr,
128 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
129 "[-g group]\n"
130 "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
131 "\t[-m reserved_blocks_percent] [-o [^]mount_options[,...]]\n"
132 "\t[-p mmp_update_interval] [-r reserved_blocks_count] "
133 "[-u user]\n"
134 "\t[-C mount_count] [-L volume_label] [-M last_mounted_dir]\n"
135 "\t[-O [^]feature[,...]] [-Q quota_options]\n"
136 "\t[-E extended-option[,...]] [-T last_check_time] "
137 "[-U UUID]\n\t[-I new_inode_size] [-z undo_file] device\n"),
138 program_name);
139 exit(1);
140 }
141
142 static __u32 ok_features[3] = {
143 /* Compat */
144 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
145 EXT2_FEATURE_COMPAT_DIR_INDEX,
146 /* Incompat */
147 EXT2_FEATURE_INCOMPAT_FILETYPE |
148 EXT3_FEATURE_INCOMPAT_EXTENTS |
149 EXT4_FEATURE_INCOMPAT_FLEX_BG |
150 EXT4_FEATURE_INCOMPAT_MMP |
151 EXT4_FEATURE_INCOMPAT_64BIT |
152 EXT4_FEATURE_INCOMPAT_ENCRYPT,
153 /* R/O compat */
154 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
155 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
156 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
157 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
158 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
159 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
160 EXT4_FEATURE_RO_COMPAT_QUOTA |
161 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
162 EXT4_FEATURE_RO_COMPAT_READONLY
163 };
164
165 static __u32 clear_ok_features[3] = {
166 /* Compat */
167 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
168 EXT2_FEATURE_COMPAT_RESIZE_INODE |
169 EXT2_FEATURE_COMPAT_DIR_INDEX,
170 /* Incompat */
171 EXT2_FEATURE_INCOMPAT_FILETYPE |
172 EXT4_FEATURE_INCOMPAT_FLEX_BG |
173 EXT4_FEATURE_INCOMPAT_MMP |
174 EXT4_FEATURE_INCOMPAT_64BIT,
175 /* R/O compat */
176 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
177 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
178 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
179 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
180 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
181 EXT4_FEATURE_RO_COMPAT_QUOTA |
182 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
183 EXT4_FEATURE_RO_COMPAT_READONLY
184 };
185
186 /**
187 * Try to get journal super block if any
188 */
189 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
190 {
191 int retval;
192 journal_superblock_t *jsb;
193
194 if (!(jfs->super->s_feature_incompat &
195 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
196 return EXT2_ET_UNSUPP_FEATURE;
197 }
198
199 /* Get the journal superblock */
200 if ((retval = io_channel_read_blk64(jfs->io,
201 ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
202 com_err(program_name, retval, "%s",
203 _("while reading journal superblock"));
204 return retval;
205 }
206
207 jsb = (journal_superblock_t *) buf;
208 if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
209 (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
210 fputs(_("Journal superblock not found!\n"), stderr);
211 return EXT2_ET_BAD_MAGIC;
212 }
213
214 return 0;
215 }
216
217 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JFS_USERS_SIZE],
218 int nr_users)
219 {
220 int i;
221 for (i = 0; i < nr_users; i++) {
222 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
223 return &s_users[i * UUID_SIZE];
224 }
225
226 return NULL;
227 }
228
229 /*
230 * Remove an external journal from the filesystem
231 */
232 static int remove_journal_device(ext2_filsys fs)
233 {
234 char *journal_path;
235 ext2_filsys jfs;
236 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
237 journal_superblock_t *jsb;
238 int i, nr_users;
239 errcode_t retval;
240 int commit_remove_journal = 0;
241 io_manager io_ptr;
242
243 if (f_flag)
244 commit_remove_journal = 1; /* force removal even if error */
245
246 uuid_unparse(fs->super->s_journal_uuid, buf);
247 journal_path = blkid_get_devname(NULL, "UUID", buf);
248
249 if (!journal_path) {
250 journal_path =
251 ext2fs_find_block_device(fs->super->s_journal_dev);
252 if (!journal_path)
253 goto no_valid_journal;
254 }
255
256 #ifdef CONFIG_TESTIO_DEBUG
257 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
258 io_ptr = test_io_manager;
259 test_io_backing_manager = unix_io_manager;
260 } else
261 #endif
262 io_ptr = unix_io_manager;
263 retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
264 EXT2_FLAG_JOURNAL_DEV_OK, 0,
265 fs->blocksize, io_ptr, &jfs);
266 if (retval) {
267 com_err(program_name, retval, "%s",
268 _("while trying to open external journal"));
269 goto no_valid_journal;
270 }
271
272 if ((retval = get_journal_sb(jfs, buf))) {
273 if (retval == EXT2_ET_UNSUPP_FEATURE)
274 fprintf(stderr, _("%s is not a journal device.\n"),
275 journal_path);
276 goto no_valid_journal;
277 }
278
279 jsb = (journal_superblock_t *) buf;
280 /* Find the filesystem UUID */
281 nr_users = ntohl(jsb->s_nr_users);
282
283 if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
284 fputs(_("Filesystem's UUID not found on journal device.\n"),
285 stderr);
286 commit_remove_journal = 1;
287 goto no_valid_journal;
288 }
289 nr_users--;
290 for (i = 0; i < nr_users; i++)
291 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
292 jsb->s_nr_users = htonl(nr_users);
293
294 /* Write back the journal superblock */
295 retval = io_channel_write_blk64(jfs->io,
296 ext2fs_journal_sb_start(fs->blocksize),
297 -SUPERBLOCK_SIZE, buf);
298 if (retval) {
299 com_err(program_name, retval,
300 "while writing journal superblock.");
301 goto no_valid_journal;
302 }
303
304 commit_remove_journal = 1;
305
306 no_valid_journal:
307 if (commit_remove_journal == 0) {
308 fputs(_("Cannot locate journal device. It was NOT removed\n"
309 "Use -f option to remove missing journal device.\n"),
310 stderr);
311 return 1;
312 }
313 fs->super->s_journal_dev = 0;
314 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
315 uuid_clear(fs->super->s_journal_uuid);
316 ext2fs_mark_super_dirty(fs);
317 fputs(_("Journal removed\n"), stdout);
318 free(journal_path);
319
320 return 0;
321 }
322
323 /* Helper function for remove_journal_inode */
324 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
325 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
326 blk64_t ref_block EXT2FS_ATTR((unused)),
327 int ref_offset EXT2FS_ATTR((unused)),
328 void *private EXT2FS_ATTR((unused)))
329 {
330 blk64_t block;
331 int group;
332
333 block = *blocknr;
334 ext2fs_unmark_block_bitmap2(fs->block_map, block);
335 group = ext2fs_group_of_blk2(fs, block);
336 ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
337 ext2fs_group_desc_csum_set(fs, group);
338 ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
339 return 0;
340 }
341
342 /*
343 * Remove the journal inode from the filesystem
344 */
345 static errcode_t remove_journal_inode(ext2_filsys fs)
346 {
347 struct ext2_inode inode;
348 errcode_t retval;
349 ino_t ino = fs->super->s_journal_inum;
350
351 retval = ext2fs_read_inode(fs, ino, &inode);
352 if (retval) {
353 com_err(program_name, retval, "%s",
354 _("while reading journal inode"));
355 return retval;
356 }
357 if (ino == EXT2_JOURNAL_INO) {
358 retval = ext2fs_read_bitmaps(fs);
359 if (retval) {
360 com_err(program_name, retval, "%s",
361 _("while reading bitmaps"));
362 return retval;
363 }
364 retval = ext2fs_block_iterate3(fs, ino,
365 BLOCK_FLAG_READ_ONLY, NULL,
366 release_blocks_proc, NULL);
367 if (retval) {
368 com_err(program_name, retval, "%s",
369 _("while clearing journal inode"));
370 return retval;
371 }
372 memset(&inode, 0, sizeof(inode));
373 ext2fs_mark_bb_dirty(fs);
374 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
375 } else
376 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
377 retval = ext2fs_write_inode(fs, ino, &inode);
378 if (retval) {
379 com_err(program_name, retval, "%s",
380 _("while writing journal inode"));
381 return retval;
382 }
383 fs->super->s_journal_inum = 0;
384 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
385 ext2fs_mark_super_dirty(fs);
386
387 return 0;
388 }
389
390 /*
391 * Update the default mount options
392 */
393 static int update_mntopts(ext2_filsys fs, char *mntopts)
394 {
395 struct ext2_super_block *sb = fs->super;
396
397 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
398 fprintf(stderr, _("Invalid mount option set: %s\n"),
399 mntopts);
400 return 1;
401 }
402 ext2fs_mark_super_dirty(fs);
403
404 return 0;
405 }
406
407 static int check_fsck_needed(ext2_filsys fs)
408 {
409 if (fs->super->s_state & EXT2_VALID_FS)
410 return 0;
411 printf("\n%s\n", _(please_fsck));
412 if (mount_flags & EXT2_MF_READONLY)
413 printf("%s", _("(and reboot afterwards!)\n"));
414 return 1;
415 }
416
417 static void request_dir_fsck_afterwards(ext2_filsys fs)
418 {
419 static int requested;
420
421 if (requested++)
422 return;
423 fsck_requested++;
424 fs->super->s_state &= ~EXT2_VALID_FS;
425 printf("\n%s\n", _(please_dir_fsck));
426 if (mount_flags & EXT2_MF_READONLY)
427 printf("%s", _("(and reboot afterwards!)\n"));
428 }
429
430 static void request_fsck_afterwards(ext2_filsys fs)
431 {
432 static int requested = 0;
433
434 if (requested++)
435 return;
436 fsck_requested++;
437 fs->super->s_state &= ~EXT2_VALID_FS;
438 printf("\n%s\n", _(please_fsck));
439 if (mount_flags & EXT2_MF_READONLY)
440 printf("%s", _("(and reboot afterwards!)\n"));
441 }
442
443 static void convert_64bit(ext2_filsys fs, int direction)
444 {
445 if (!direction)
446 return;
447
448 /*
449 * Is resize2fs going to demand a fsck run? Might as well tell the
450 * user now.
451 */
452 if (!fsck_requested &&
453 ((fs->super->s_state & EXT2_ERROR_FS) ||
454 !(fs->super->s_state & EXT2_VALID_FS) ||
455 fs->super->s_lastcheck < fs->super->s_mtime))
456 request_fsck_afterwards(fs);
457 if (fsck_requested)
458 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
459 direction > 0 ? "-b" : "-s", fs->device_name);
460 else
461 fprintf(stderr, _("Please run `resize2fs %s %s"),
462 direction > 0 ? "-b" : "-s", fs->device_name);
463
464 if (undo_file)
465 fprintf(stderr, _(" -z \"%s\""), undo_file);
466 if (direction > 0)
467 fprintf(stderr, _("' to enable 64-bit mode.\n"));
468 else
469 fprintf(stderr, _("' to disable 64-bit mode.\n"));
470 }
471
472 /* Rewrite extents */
473 static errcode_t rewrite_extents(ext2_filsys fs, ext2_ino_t ino,
474 struct ext2_inode *inode)
475 {
476 ext2_extent_handle_t handle;
477 struct ext2fs_extent extent;
478 errcode_t errcode;
479 struct ext2_extent_info info;
480
481 if (!(inode->i_flags & EXT4_EXTENTS_FL) ||
482 !EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
483 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
484 return 0;
485
486 errcode = ext2fs_extent_open(fs, ino, &handle);
487 if (errcode)
488 return errcode;
489
490 errcode = ext2fs_extent_get(handle, EXT2_EXTENT_ROOT, &extent);
491 if (errcode)
492 goto out;
493
494 do {
495 errcode = ext2fs_extent_get_info(handle, &info);
496 if (errcode)
497 break;
498
499 /*
500 * If this is the first extent in an extent block that we
501 * haven't visited, rewrite the extent to force the ETB
502 * checksum to be rewritten.
503 */
504 if (info.curr_entry == 1 && info.curr_level != 0 &&
505 !(extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)) {
506 errcode = ext2fs_extent_replace(handle, 0, &extent);
507 if (errcode)
508 break;
509 }
510
511 /* Skip to the end of a block of leaf nodes */
512 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
513 errcode = ext2fs_extent_get(handle,
514 EXT2_EXTENT_LAST_SIB,
515 &extent);
516 if (errcode)
517 break;
518 }
519
520 errcode = ext2fs_extent_get(handle, EXT2_EXTENT_NEXT, &extent);
521 } while (errcode == 0);
522
523 out:
524 /* Ok if we run off the end */
525 if (errcode == EXT2_ET_EXTENT_NO_NEXT)
526 errcode = 0;
527 ext2fs_extent_free(handle);
528 return errcode;
529 }
530
531 /*
532 * Rewrite directory blocks with checksums
533 */
534 struct rewrite_dir_context {
535 char *buf;
536 errcode_t errcode;
537 ext2_ino_t dir;
538 int is_htree;
539 };
540
541 static int rewrite_dir_block(ext2_filsys fs,
542 blk64_t *blocknr,
543 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
544 blk64_t ref_block EXT2FS_ATTR((unused)),
545 int ref_offset EXT2FS_ATTR((unused)),
546 void *priv_data)
547 {
548 struct ext2_dx_countlimit *dcl = NULL;
549 struct rewrite_dir_context *ctx = priv_data;
550 int dcl_offset, changed = 0;
551
552 ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
553 ctx->dir);
554 if (ctx->errcode)
555 return BLOCK_ABORT;
556
557 /* if htree node... */
558 if (ctx->is_htree)
559 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
560 &dcl, &dcl_offset);
561 if (dcl) {
562 if (!EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
563 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
564 /* Ensure limit is the max size */
565 int max_entries = (fs->blocksize - dcl_offset) /
566 sizeof(struct ext2_dx_entry);
567 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
568 changed = 1;
569 dcl->limit = ext2fs_cpu_to_le16(max_entries);
570 }
571 } else {
572 /* If htree block is full then rebuild the dir */
573 if (ext2fs_le16_to_cpu(dcl->count) ==
574 ext2fs_le16_to_cpu(dcl->limit)) {
575 request_dir_fsck_afterwards(fs);
576 return 0;
577 }
578 /*
579 * Ensure dcl->limit is small enough to leave room for
580 * the checksum tail.
581 */
582 int max_entries = (fs->blocksize - (dcl_offset +
583 sizeof(struct ext2_dx_tail))) /
584 sizeof(struct ext2_dx_entry);
585 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
586 dcl->limit = ext2fs_cpu_to_le16(max_entries);
587 /* Always rewrite checksum */
588 changed = 1;
589 }
590 } else {
591 unsigned int rec_len, name_size;
592 char *top = ctx->buf + fs->blocksize;
593 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
594 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
595
596 /* Find last and penultimate dirent */
597 while ((char *)de < top) {
598 penultimate_de = last_de;
599 last_de = de;
600 ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
601 if (!ctx->errcode && !rec_len)
602 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
603 if (ctx->errcode)
604 return BLOCK_ABORT;
605 de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
606 }
607 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
608 if (ctx->errcode)
609 return BLOCK_ABORT;
610 name_size = ext2fs_dirent_name_len(last_de);
611
612 if (!EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
613 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
614 if (!penultimate_de)
615 return 0;
616 if (last_de->inode ||
617 name_size ||
618 rec_len != sizeof(struct ext2_dir_entry_tail))
619 return 0;
620 /*
621 * The last dirent is unused and the right length to
622 * have stored a checksum. Erase it.
623 */
624 ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
625 &rec_len);
626 if (!rec_len)
627 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
628 if (ctx->errcode)
629 return BLOCK_ABORT;
630 ext2fs_set_rec_len(fs, rec_len +
631 sizeof(struct ext2_dir_entry_tail),
632 penultimate_de);
633 changed = 1;
634 } else {
635 unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
636 struct ext2_dir_entry_tail *t;
637
638 /*
639 * If the last dirent looks like the tail, just update
640 * the checksum.
641 */
642 if (!last_de->inode &&
643 rec_len == csum_size) {
644 t = (struct ext2_dir_entry_tail *)last_de;
645 t->det_reserved_name_len =
646 EXT2_DIR_NAME_LEN_CSUM;
647 changed = 1;
648 goto out;
649 }
650 if (name_size & 3)
651 name_size = (name_size & ~3) + 4;
652 /* If there's not enough space for the tail, e2fsck */
653 if (rec_len <= (8 + name_size + csum_size)) {
654 request_dir_fsck_afterwards(fs);
655 return 0;
656 }
657 /* Shorten that last de and insert the tail */
658 ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
659 t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
660 ext2fs_initialize_dirent_tail(fs, t);
661
662 /* Always update checksum */
663 changed = 1;
664 }
665 }
666
667 out:
668 if (!changed)
669 return 0;
670
671 ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
672 0, ctx->dir);
673 if (ctx->errcode)
674 return BLOCK_ABORT;
675
676 return 0;
677 }
678
679 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
680 struct ext2_inode *inode)
681 {
682 errcode_t retval;
683 struct rewrite_dir_context ctx;
684
685 retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
686 if (retval)
687 return retval;
688
689 ctx.is_htree = (inode->i_flags & EXT2_INDEX_FL);
690 ctx.dir = dir;
691 ctx.errcode = 0;
692 retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
693 BLOCK_FLAG_DATA_ONLY,
694 0, rewrite_dir_block, &ctx);
695
696 ext2fs_free_mem(&ctx.buf);
697 if (retval)
698 return retval;
699
700 return ctx.errcode;
701 }
702
703 /*
704 * Forcibly set checksums in all inodes.
705 */
706 static void rewrite_inodes(ext2_filsys fs)
707 {
708 int length = EXT2_INODE_SIZE(fs->super);
709 struct ext2_inode *inode, *zero;
710 char *ea_buf;
711 ext2_inode_scan scan;
712 errcode_t retval;
713 ext2_ino_t ino;
714 blk64_t file_acl_block;
715 int inode_dirty;
716
717 if (fs->super->s_creator_os != EXT2_OS_LINUX)
718 return;
719
720 retval = ext2fs_open_inode_scan(fs, 0, &scan);
721 if (retval) {
722 com_err("set_csum", retval, "while opening inode scan");
723 exit(1);
724 }
725
726 retval = ext2fs_get_mem(length, &inode);
727 if (retval) {
728 com_err("set_csum", retval, "while allocating memory");
729 exit(1);
730 }
731
732 retval = ext2fs_get_memzero(length, &zero);
733 if (retval) {
734 com_err("set_csum", retval, "while allocating memory");
735 exit(1);
736 }
737
738 retval = ext2fs_get_mem(fs->blocksize, &ea_buf);
739 if (retval) {
740 com_err("set_csum", retval, "while allocating memory");
741 exit(1);
742 }
743
744 do {
745 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
746 if (retval) {
747 com_err("set_csum", retval, "while getting next inode");
748 exit(1);
749 }
750 if (!ino)
751 break;
752 if (ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
753 inode_dirty = 1;
754 } else {
755 if (memcmp(inode, zero, length) != 0) {
756 memset(inode, 0, length);
757 inode_dirty = 1;
758 } else {
759 inode_dirty = 0;
760 }
761 }
762
763 if (inode_dirty) {
764 retval = ext2fs_write_inode_full(fs, ino, inode,
765 length);
766 if (retval) {
767 com_err("set_csum", retval, "while writing "
768 "inode");
769 exit(1);
770 }
771 }
772
773 retval = rewrite_extents(fs, ino, inode);
774 if (retval) {
775 com_err("rewrite_extents", retval,
776 "while rewriting extents");
777 exit(1);
778 }
779
780 if (LINUX_S_ISDIR(inode->i_mode) &&
781 ext2fs_inode_has_valid_blocks2(fs, inode)) {
782 retval = rewrite_directory(fs, ino, inode);
783 if (retval) {
784 com_err("rewrite_directory", retval,
785 "while rewriting directories");
786 exit(1);
787 }
788 }
789
790 file_acl_block = ext2fs_file_acl_block(fs, inode);
791 if (!file_acl_block)
792 continue;
793 retval = ext2fs_read_ext_attr3(fs, file_acl_block, ea_buf, ino);
794 if (retval) {
795 com_err("rewrite_eablock", retval,
796 "while rewriting extended attribute");
797 exit(1);
798 }
799 retval = ext2fs_write_ext_attr3(fs, file_acl_block, ea_buf,
800 ino);
801 if (retval) {
802 com_err("rewrite_eablock", retval,
803 "while rewriting extended attribute");
804 exit(1);
805 }
806 } while (ino);
807
808 ext2fs_free_mem(&zero);
809 ext2fs_free_mem(&inode);
810 ext2fs_free_mem(&ea_buf);
811 ext2fs_close_inode_scan(scan);
812 }
813
814 static void rewrite_metadata_checksums(ext2_filsys fs)
815 {
816 errcode_t retval;
817 dgrp_t i;
818
819 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
820 ext2fs_init_csum_seed(fs);
821 for (i = 0; i < fs->group_desc_count; i++)
822 ext2fs_group_desc_csum_set(fs, i);
823 retval = ext2fs_read_bitmaps(fs);
824 if (retval) {
825 com_err("rewrite_metadata_checksums", retval,
826 "while reading bitmaps");
827 exit(1);
828 }
829 rewrite_inodes(fs);
830 ext2fs_mark_ib_dirty(fs);
831 ext2fs_mark_bb_dirty(fs);
832 ext2fs_mmp_update2(fs, 1);
833 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
834 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
835 if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
836 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
837 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
838 else
839 fs->super->s_checksum_type = 0;
840 ext2fs_mark_super_dirty(fs);
841 }
842
843 static void enable_uninit_bg(ext2_filsys fs)
844 {
845 struct ext2_group_desc *gd;
846 dgrp_t i;
847
848 for (i = 0; i < fs->group_desc_count; i++) {
849 gd = ext2fs_group_desc(fs, fs->group_desc, i);
850 gd->bg_itable_unused = 0;
851 gd->bg_flags = EXT2_BG_INODE_ZEROED;
852 ext2fs_group_desc_csum_set(fs, i);
853 }
854 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
855 }
856
857 static errcode_t zero_empty_inodes(ext2_filsys fs)
858 {
859 int length = EXT2_INODE_SIZE(fs->super);
860 struct ext2_inode *inode = NULL;
861 ext2_inode_scan scan;
862 errcode_t retval;
863 ext2_ino_t ino;
864
865 retval = ext2fs_open_inode_scan(fs, 0, &scan);
866 if (retval)
867 goto out;
868
869 retval = ext2fs_get_mem(length, &inode);
870 if (retval)
871 goto out;
872
873 do {
874 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
875 if (retval)
876 goto out;
877 if (!ino)
878 break;
879 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
880 memset(inode, 0, length);
881 retval = ext2fs_write_inode_full(fs, ino, inode,
882 length);
883 if (retval)
884 goto out;
885 }
886 } while (1);
887
888 out:
889 ext2fs_free_mem(&inode);
890 ext2fs_close_inode_scan(scan);
891 return retval;
892 }
893
894 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
895 {
896 struct ext2_group_desc *gd;
897 dgrp_t i;
898 errcode_t retval;
899 blk64_t b, c, d;
900
901 /* Load bitmaps to ensure that the uninit ones get written out */
902 fs->super->s_feature_ro_compat |= csum_feature_flag;
903 retval = ext2fs_read_bitmaps(fs);
904 fs->super->s_feature_ro_compat &= ~csum_feature_flag;
905 if (retval) {
906 com_err("disable_uninit_bg", retval,
907 "while reading bitmaps");
908 request_fsck_afterwards(fs);
909 return retval;
910 }
911 ext2fs_mark_ib_dirty(fs);
912 ext2fs_mark_bb_dirty(fs);
913
914 /* If we're only turning off uninit_bg, zero the inodes */
915 if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
916 retval = zero_empty_inodes(fs);
917 if (retval) {
918 com_err("disable_uninit_bg", retval,
919 "while zeroing unused inodes");
920 request_fsck_afterwards(fs);
921 return retval;
922 }
923 }
924
925 /* The bbitmap is zeroed; we must mark group metadata blocks in use */
926 for (i = 0; i < fs->group_desc_count; i++) {
927 b = ext2fs_block_bitmap_loc(fs, i);
928 ext2fs_mark_block_bitmap2(fs->block_map, b);
929 b = ext2fs_inode_bitmap_loc(fs, i);
930 ext2fs_mark_block_bitmap2(fs->block_map, b);
931
932 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
933 if (retval == 0 && b)
934 ext2fs_mark_block_bitmap2(fs->block_map, b);
935 if (retval == 0 && c)
936 ext2fs_mark_block_bitmap2(fs->block_map, c);
937 if (retval == 0 && d)
938 ext2fs_mark_block_bitmap2(fs->block_map, d);
939 if (retval) {
940 com_err("disable_uninit_bg", retval,
941 "while initializing block bitmaps");
942 request_fsck_afterwards(fs);
943 }
944
945 gd = ext2fs_group_desc(fs, fs->group_desc, i);
946 gd->bg_itable_unused = 0;
947 gd->bg_flags = 0;
948 ext2fs_group_desc_csum_set(fs, i);
949 }
950 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
951 ext2fs_mark_super_dirty(fs);
952
953 return 0;
954 }
955
956 /*
957 * Update the feature set as provided by the user.
958 */
959 static int update_feature_set(ext2_filsys fs, char *features)
960 {
961 struct ext2_super_block *sb = fs->super;
962 __u32 old_features[3];
963 int type_err;
964 unsigned int mask_err;
965 errcode_t err;
966
967 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
968 ((&sb->s_feature_compat)[(type)] & (mask)))
969 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
970 !((&sb->s_feature_compat)[(type)] & (mask)))
971 #define FEATURE_CHANGED(type, mask) ((mask) & \
972 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
973
974 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
975 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
976 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
977
978 if (e2p_edit_feature2(features, &sb->s_feature_compat,
979 ok_features, clear_ok_features,
980 &type_err, &mask_err)) {
981 if (!mask_err)
982 fprintf(stderr,
983 _("Invalid filesystem option set: %s\n"),
984 features);
985 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
986 fprintf(stderr, _("Clearing filesystem feature '%s' "
987 "not supported.\n"),
988 e2p_feature2string(type_err &
989 E2P_FEATURE_TYPE_MASK,
990 mask_err));
991 else
992 fprintf(stderr, _("Setting filesystem feature '%s' "
993 "not supported.\n"),
994 e2p_feature2string(type_err, mask_err));
995 return 1;
996 }
997
998 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
999 if ((mount_flags & EXT2_MF_MOUNTED) &&
1000 !(mount_flags & EXT2_MF_READONLY)) {
1001 fputs(_("The has_journal feature may only be "
1002 "cleared when the filesystem is\n"
1003 "unmounted or mounted "
1004 "read-only.\n"), stderr);
1005 return 1;
1006 }
1007 if ((sb->s_feature_incompat &
1008 EXT3_FEATURE_INCOMPAT_RECOVER) &&
1009 f_flag < 2) {
1010 fputs(_("The needs_recovery flag is set. "
1011 "Please run e2fsck before clearing\n"
1012 "the has_journal flag.\n"), stderr);
1013 return 1;
1014 }
1015 if (sb->s_journal_inum) {
1016 if (remove_journal_inode(fs))
1017 return 1;
1018 }
1019 if (sb->s_journal_dev) {
1020 if (remove_journal_device(fs))
1021 return 1;
1022 }
1023 }
1024
1025 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1026 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1027 if (sb->s_feature_incompat &
1028 EXT2_FEATURE_INCOMPAT_META_BG) {
1029 fputs(_("Setting filesystem feature 'sparse_super' "
1030 "not supported\nfor filesystems with "
1031 "the meta_bg feature enabled.\n"),
1032 stderr);
1033 return 1;
1034 }
1035 }
1036
1037 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1038 int error;
1039
1040 if ((mount_flags & EXT2_MF_MOUNTED) ||
1041 (mount_flags & EXT2_MF_READONLY)) {
1042 fputs(_("The multiple mount protection feature can't\n"
1043 "be set if the filesystem is mounted or\n"
1044 "read-only.\n"), stderr);
1045 return 1;
1046 }
1047
1048 error = ext2fs_mmp_init(fs);
1049 if (error) {
1050 fputs(_("\nError while enabling multiple mount "
1051 "protection feature."), stderr);
1052 return 1;
1053 }
1054
1055 /*
1056 * We want to update group desc with the new free blocks count
1057 */
1058 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1059
1060 printf(_("Multiple mount protection has been enabled "
1061 "with update interval %ds.\n"),
1062 sb->s_mmp_update_interval);
1063 }
1064
1065 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1066 int error;
1067
1068 if (mount_flags & EXT2_MF_READONLY) {
1069 fputs(_("The multiple mount protection feature cannot\n"
1070 "be disabled if the filesystem is readonly.\n"),
1071 stderr);
1072 return 1;
1073 }
1074
1075 error = ext2fs_read_bitmaps(fs);
1076 if (error) {
1077 fputs(_("Error while reading bitmaps\n"), stderr);
1078 return 1;
1079 }
1080
1081 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1082 if (error) {
1083 struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1084
1085 if (error == EXT2_ET_MMP_MAGIC_INVALID)
1086 printf(_("Magic number in MMP block does not "
1087 "match. expected: %x, actual: %x\n"),
1088 EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1089 else
1090 com_err(program_name, error, "%s",
1091 _("while reading MMP block."));
1092 goto mmp_error;
1093 }
1094
1095 /* We need to force out the group descriptors as well */
1096 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1097 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1098 mmp_error:
1099 sb->s_mmp_block = 0;
1100 sb->s_mmp_update_interval = 0;
1101 }
1102
1103 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1104 /*
1105 * If adding a journal flag, let the create journal
1106 * code below handle setting the flag and creating the
1107 * journal. We supply a default size if necessary.
1108 */
1109 if (!journal_size)
1110 journal_size = -1;
1111 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1112 }
1113
1114 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1115 if (!sb->s_def_hash_version)
1116 sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1117 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1118 uuid_generate((unsigned char *) sb->s_hash_seed);
1119 }
1120
1121 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1122 if (ext2fs_check_desc(fs)) {
1123 fputs(_("Clearing the flex_bg flag would "
1124 "cause the the filesystem to be\n"
1125 "inconsistent.\n"), stderr);
1126 return 1;
1127 }
1128 }
1129
1130 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1131 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1132 if ((mount_flags & EXT2_MF_MOUNTED) &&
1133 !(mount_flags & EXT2_MF_READONLY)) {
1134 fputs(_("The huge_file feature may only be "
1135 "cleared when the filesystem is\n"
1136 "unmounted or mounted "
1137 "read-only.\n"), stderr);
1138 return 1;
1139 }
1140 }
1141
1142 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1143 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1144 if (check_fsck_needed(fs))
1145 exit(1);
1146 if (mount_flags & EXT2_MF_MOUNTED) {
1147 fputs(_("Cannot enable metadata_csum on a mounted "
1148 "filesystem!\n"), stderr);
1149 exit(1);
1150 }
1151 if (!EXT2_HAS_INCOMPAT_FEATURE(fs->super,
1152 EXT3_FEATURE_INCOMPAT_EXTENTS))
1153 printf("%s",
1154 _("Extents are not enabled. The file extent "
1155 "tree can be checksummed, whereas block maps "
1156 "cannot. Not enabling extents reduces the "
1157 "coverage of metadata checksumming. "
1158 "Re-run with -O extent to rectify.\n"));
1159 if (!EXT2_HAS_INCOMPAT_FEATURE(fs->super,
1160 EXT4_FEATURE_INCOMPAT_64BIT))
1161 printf("%s",
1162 _("64-bit filesystem support is not enabled. "
1163 "The larger fields afforded by this feature "
1164 "enable full-strength checksumming. "
1165 "Run resize2fs -b to rectify.\n"));
1166 rewrite_checksums = 1;
1167 /* metadata_csum supersedes uninit_bg */
1168 fs->super->s_feature_ro_compat &=
1169 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1170
1171 /* if uninit_bg was previously off, rewrite group desc */
1172 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1173 EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1174 enable_uninit_bg(fs);
1175
1176 /*
1177 * Since metadata_csum supersedes uninit_bg, pretend like
1178 * uninit_bg has been off all along.
1179 */
1180 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1181 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1182 }
1183
1184 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1185 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1186 __u32 test_features[3];
1187
1188 if (check_fsck_needed(fs))
1189 exit(1);
1190 if (mount_flags & EXT2_MF_MOUNTED) {
1191 fputs(_("Cannot disable metadata_csum on a mounted "
1192 "filesystem!\n"), stderr);
1193 exit(1);
1194 }
1195 rewrite_checksums = 1;
1196
1197 /* Enable uninit_bg unless the user expressly turned it off */
1198 memcpy(test_features, old_features, sizeof(test_features));
1199 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1200 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1201 e2p_edit_feature2(features, test_features, ok_features,
1202 clear_ok_features, NULL, NULL);
1203 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1204 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1205 fs->super->s_feature_ro_compat |=
1206 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1207
1208 /*
1209 * If we're turning off metadata_csum and not turning on
1210 * uninit_bg, rewrite group desc.
1211 */
1212 if (!(fs->super->s_feature_ro_compat &
1213 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1214 err = disable_uninit_bg(fs,
1215 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1216 if (err)
1217 return 1;
1218 } else
1219 /*
1220 * metadata_csum previously provided uninit_bg, so if
1221 * we're also setting the uninit_bg feature bit,
1222 * pretend like it was previously enabled. Checksums
1223 * will be rewritten with crc16 later.
1224 */
1225 old_features[E2P_FEATURE_RO_INCOMPAT] |=
1226 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1227 }
1228
1229 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1230 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1231 /* Do not enable uninit_bg when metadata_csum enabled */
1232 if (fs->super->s_feature_ro_compat &
1233 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)
1234 fs->super->s_feature_ro_compat &=
1235 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1236 else
1237 enable_uninit_bg(fs);
1238 }
1239
1240 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1241 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1242 err = disable_uninit_bg(fs,
1243 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1244 if (err)
1245 return 1;
1246 }
1247
1248 /*
1249 * We don't actually toggle 64bit; resize2fs does that. But this
1250 * must come after the metadata_csum feature_on so that it won't
1251 * complain about the lack of 64bit.
1252 */
1253 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1254 EXT4_FEATURE_INCOMPAT_64BIT)) {
1255 if (mount_flags & EXT2_MF_MOUNTED) {
1256 fprintf(stderr, _("Cannot enable 64-bit mode "
1257 "while mounted!\n"));
1258 exit(1);
1259 }
1260 sb->s_feature_incompat &= ~EXT4_FEATURE_INCOMPAT_64BIT;
1261 feature_64bit = 1;
1262 }
1263 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1264 EXT4_FEATURE_INCOMPAT_64BIT)) {
1265 if (mount_flags & EXT2_MF_MOUNTED) {
1266 fprintf(stderr, _("Cannot disable 64-bit mode "
1267 "while mounted!\n"));
1268 exit(1);
1269 }
1270 sb->s_feature_incompat |= EXT4_FEATURE_INCOMPAT_64BIT;
1271 feature_64bit = -1;
1272 }
1273
1274 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1275 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1276 /*
1277 * Set the Q_flag here and handle the quota options in the code
1278 * below.
1279 */
1280 if (!Q_flag) {
1281 Q_flag = 1;
1282 /* Enable both user quota and group quota by default */
1283 usrquota = QOPT_ENABLE;
1284 grpquota = QOPT_ENABLE;
1285 }
1286 sb->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
1287 }
1288
1289 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1290 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1291 /*
1292 * Set the Q_flag here and handle the quota options in the code
1293 * below.
1294 */
1295 if (Q_flag)
1296 fputs(_("\nWarning: '^quota' option overrides '-Q'"
1297 "arguments.\n"), stderr);
1298 Q_flag = 1;
1299 /* Disable both user quota and group quota by default */
1300 usrquota = QOPT_DISABLE;
1301 grpquota = QOPT_DISABLE;
1302 }
1303
1304 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1305 fs->super->s_encrypt_algos[0] =
1306 EXT4_ENCRYPTION_MODE_AES_256_XTS;
1307 fs->super->s_encrypt_algos[1] =
1308 EXT4_ENCRYPTION_MODE_AES_256_CTS;
1309 }
1310
1311 if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1312 (sb->s_feature_compat || sb->s_feature_ro_compat ||
1313 sb->s_feature_incompat))
1314 ext2fs_update_dynamic_rev(fs);
1315
1316 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1317 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1318 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1319 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1320 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1321 EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1322 FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1323 EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1324 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1325 EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1326 request_fsck_afterwards(fs);
1327
1328 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1329 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1330 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1331 ext2fs_mark_super_dirty(fs);
1332
1333 return 0;
1334 }
1335
1336 /*
1337 * Add a journal to the filesystem.
1338 */
1339 static int add_journal(ext2_filsys fs)
1340 {
1341 unsigned long journal_blocks;
1342 errcode_t retval;
1343 ext2_filsys jfs;
1344 io_manager io_ptr;
1345
1346 if (fs->super->s_feature_compat &
1347 EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
1348 fputs(_("The filesystem already has a journal.\n"), stderr);
1349 goto err;
1350 }
1351 if (journal_device) {
1352 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1353 NULL))
1354 proceed_question(-1);
1355 check_mount(journal_device, 0, _("journal"));
1356 #ifdef CONFIG_TESTIO_DEBUG
1357 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1358 io_ptr = test_io_manager;
1359 test_io_backing_manager = unix_io_manager;
1360 } else
1361 #endif
1362 io_ptr = unix_io_manager;
1363 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1364 EXT2_FLAG_JOURNAL_DEV_OK, 0,
1365 fs->blocksize, io_ptr, &jfs);
1366 if (retval) {
1367 com_err(program_name, retval,
1368 _("\n\twhile trying to open journal on %s\n"),
1369 journal_device);
1370 goto err;
1371 }
1372 printf(_("Creating journal on device %s: "),
1373 journal_device);
1374 fflush(stdout);
1375
1376 retval = ext2fs_add_journal_device(fs, jfs);
1377 ext2fs_close_free(&jfs);
1378 if (retval) {
1379 com_err(program_name, retval,
1380 _("while adding filesystem to journal on %s"),
1381 journal_device);
1382 goto err;
1383 }
1384 fputs(_("done\n"), stdout);
1385 } else if (journal_size) {
1386 fputs(_("Creating journal inode: "), stdout);
1387 fflush(stdout);
1388 journal_blocks = figure_journal_size(journal_size, fs);
1389
1390 if (journal_location_string)
1391 journal_location =
1392 parse_num_blocks2(journal_location_string,
1393 fs->super->s_log_block_size);
1394 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
1395 journal_location,
1396 journal_flags);
1397 if (retval) {
1398 fprintf(stderr, "\n");
1399 com_err(program_name, retval, "%s",
1400 _("\n\twhile trying to create journal file"));
1401 return retval;
1402 } else
1403 fputs(_("done\n"), stdout);
1404 /*
1405 * If the filesystem wasn't mounted, we need to force
1406 * the block group descriptors out.
1407 */
1408 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1409 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1410 }
1411 print_check_message(fs->super->s_max_mnt_count,
1412 fs->super->s_checkinterval);
1413 return 0;
1414
1415 err:
1416 free(journal_device);
1417 return 1;
1418 }
1419
1420 static void handle_quota_options(ext2_filsys fs)
1421 {
1422 quota_ctx_t qctx;
1423 ext2_ino_t qf_ino;
1424
1425 if (!usrquota && !grpquota)
1426 /* Nothing to do. */
1427 return;
1428
1429 quota_init_context(&qctx, fs, -1);
1430
1431 if (usrquota == QOPT_ENABLE || grpquota == QOPT_ENABLE)
1432 quota_compute_usage(qctx);
1433
1434 if (usrquota == QOPT_ENABLE && !fs->super->s_usr_quota_inum) {
1435 if ((qf_ino = quota_file_exists(fs, USRQUOTA,
1436 QFMT_VFS_V1)) > 0)
1437 quota_update_limits(qctx, qf_ino, USRQUOTA);
1438 quota_write_inode(qctx, USRQUOTA);
1439 } else if (usrquota == QOPT_DISABLE) {
1440 quota_remove_inode(fs, USRQUOTA);
1441 }
1442
1443 if (grpquota == QOPT_ENABLE && !fs->super->s_grp_quota_inum) {
1444 if ((qf_ino = quota_file_exists(fs, GRPQUOTA,
1445 QFMT_VFS_V1)) > 0)
1446 quota_update_limits(qctx, qf_ino, GRPQUOTA);
1447 quota_write_inode(qctx, GRPQUOTA);
1448 } else if (grpquota == QOPT_DISABLE) {
1449 quota_remove_inode(fs, GRPQUOTA);
1450 }
1451
1452 quota_release_context(&qctx);
1453
1454 if ((usrquota == QOPT_ENABLE) || (grpquota == QOPT_ENABLE)) {
1455 fs->super->s_feature_ro_compat |= EXT4_FEATURE_RO_COMPAT_QUOTA;
1456 ext2fs_mark_super_dirty(fs);
1457 } else if (!fs->super->s_usr_quota_inum &&
1458 !fs->super->s_grp_quota_inum) {
1459 fs->super->s_feature_ro_compat &= ~EXT4_FEATURE_RO_COMPAT_QUOTA;
1460 ext2fs_mark_super_dirty(fs);
1461 }
1462
1463 return;
1464 }
1465
1466 static void parse_quota_opts(const char *opts)
1467 {
1468 char *buf, *token, *next, *p;
1469 int len;
1470
1471 len = strlen(opts);
1472 buf = malloc(len+1);
1473 if (!buf) {
1474 fputs(_("Couldn't allocate memory to parse quota "
1475 "options!\n"), stderr);
1476 exit(1);
1477 }
1478 strcpy(buf, opts);
1479 for (token = buf; token && *token; token = next) {
1480 p = strchr(token, ',');
1481 next = 0;
1482 if (p) {
1483 *p = 0;
1484 next = p+1;
1485 }
1486
1487 if (strcmp(token, "usrquota") == 0) {
1488 usrquota = QOPT_ENABLE;
1489 } else if (strcmp(token, "^usrquota") == 0) {
1490 usrquota = QOPT_DISABLE;
1491 } else if (strcmp(token, "grpquota") == 0) {
1492 grpquota = QOPT_ENABLE;
1493 } else if (strcmp(token, "^grpquota") == 0) {
1494 grpquota = QOPT_DISABLE;
1495 } else {
1496 fputs(_("\nBad quota options specified.\n\n"
1497 "Following valid quota options are available "
1498 "(pass by separating with comma):\n"
1499 "\t[^]usrquota\n"
1500 "\t[^]grpquota\n"
1501 "\n\n"), stderr);
1502 free(buf);
1503 exit(1);
1504 }
1505 }
1506 free(buf);
1507 }
1508
1509 static void parse_e2label_options(int argc, char ** argv)
1510 {
1511 if ((argc < 2) || (argc > 3)) {
1512 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1513 exit(1);
1514 }
1515 io_options = strchr(argv[1], '?');
1516 if (io_options)
1517 *io_options++ = 0;
1518 device_name = blkid_get_devname(NULL, argv[1], NULL);
1519 if (!device_name) {
1520 com_err("e2label", 0, _("Unable to resolve '%s'"),
1521 argv[1]);
1522 exit(1);
1523 }
1524 open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
1525 if (argc == 3) {
1526 open_flag |= EXT2_FLAG_RW;
1527 L_flag = 1;
1528 new_label = argv[2];
1529 } else
1530 print_label++;
1531 }
1532
1533 static time_t parse_time(char *str)
1534 {
1535 struct tm ts;
1536
1537 if (strcmp(str, "now") == 0) {
1538 return (time(0));
1539 }
1540 memset(&ts, 0, sizeof(ts));
1541 #ifdef HAVE_STRPTIME
1542 strptime(str, "%Y%m%d%H%M%S", &ts);
1543 #else
1544 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1545 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1546 ts.tm_year -= 1900;
1547 ts.tm_mon -= 1;
1548 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1549 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1550 ts.tm_min > 59 || ts.tm_sec > 61)
1551 ts.tm_mday = 0;
1552 #endif
1553 if (ts.tm_mday == 0) {
1554 com_err(program_name, 0,
1555 _("Couldn't parse date/time specifier: %s"),
1556 str);
1557 usage();
1558 }
1559 ts.tm_isdst = -1;
1560 return (mktime(&ts));
1561 }
1562
1563 static void parse_tune2fs_options(int argc, char **argv)
1564 {
1565 int c;
1566 char *tmp;
1567 struct group *gr;
1568 struct passwd *pw;
1569 char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1570
1571 open_flag = 0;
1572 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1573 while ((c = getopt(argc, argv, optstring)) != EOF)
1574 switch (c) {
1575 case 'c':
1576 max_mount_count = strtol(optarg, &tmp, 0);
1577 if (*tmp || max_mount_count > 16000) {
1578 com_err(program_name, 0,
1579 _("bad mounts count - %s"),
1580 optarg);
1581 usage();
1582 }
1583 if (max_mount_count == 0)
1584 max_mount_count = -1;
1585 c_flag = 1;
1586 open_flag = EXT2_FLAG_RW;
1587 break;
1588 case 'C':
1589 mount_count = strtoul(optarg, &tmp, 0);
1590 if (*tmp || mount_count > 16000) {
1591 com_err(program_name, 0,
1592 _("bad mounts count - %s"),
1593 optarg);
1594 usage();
1595 }
1596 C_flag = 1;
1597 open_flag = EXT2_FLAG_RW;
1598 break;
1599 case 'e':
1600 if (strcmp(optarg, "continue") == 0)
1601 errors = EXT2_ERRORS_CONTINUE;
1602 else if (strcmp(optarg, "remount-ro") == 0)
1603 errors = EXT2_ERRORS_RO;
1604 else if (strcmp(optarg, "panic") == 0)
1605 errors = EXT2_ERRORS_PANIC;
1606 else {
1607 com_err(program_name, 0,
1608 _("bad error behavior - %s"),
1609 optarg);
1610 usage();
1611 }
1612 e_flag = 1;
1613 open_flag = EXT2_FLAG_RW;
1614 break;
1615 case 'E':
1616 extended_cmd = optarg;
1617 open_flag |= EXT2_FLAG_RW;
1618 break;
1619 case 'f': /* Force */
1620 f_flag++;
1621 break;
1622 case 'g':
1623 resgid = strtoul(optarg, &tmp, 0);
1624 if (*tmp) {
1625 gr = getgrnam(optarg);
1626 if (gr == NULL)
1627 tmp = optarg;
1628 else {
1629 resgid = gr->gr_gid;
1630 *tmp = 0;
1631 }
1632 }
1633 if (*tmp) {
1634 com_err(program_name, 0,
1635 _("bad gid/group name - %s"),
1636 optarg);
1637 usage();
1638 }
1639 g_flag = 1;
1640 open_flag = EXT2_FLAG_RW;
1641 break;
1642 case 'i':
1643 interval = strtoul(optarg, &tmp, 0);
1644 switch (*tmp) {
1645 case 's':
1646 tmp++;
1647 break;
1648 case '\0':
1649 case 'd':
1650 case 'D': /* days */
1651 interval *= 86400;
1652 if (*tmp != '\0')
1653 tmp++;
1654 break;
1655 case 'm':
1656 case 'M': /* months! */
1657 interval *= 86400 * 30;
1658 tmp++;
1659 break;
1660 case 'w':
1661 case 'W': /* weeks */
1662 interval *= 86400 * 7;
1663 tmp++;
1664 break;
1665 }
1666 if (*tmp) {
1667 com_err(program_name, 0,
1668 _("bad interval - %s"), optarg);
1669 usage();
1670 }
1671 i_flag = 1;
1672 open_flag = EXT2_FLAG_RW;
1673 break;
1674 case 'j':
1675 if (!journal_size)
1676 journal_size = -1;
1677 open_flag = EXT2_FLAG_RW;
1678 break;
1679 case 'J':
1680 parse_journal_opts(optarg);
1681 open_flag = EXT2_FLAG_RW;
1682 break;
1683 case 'l':
1684 l_flag = 1;
1685 break;
1686 case 'L':
1687 new_label = optarg;
1688 L_flag = 1;
1689 open_flag |= EXT2_FLAG_RW |
1690 EXT2_FLAG_JOURNAL_DEV_OK;
1691 break;
1692 case 'm':
1693 reserved_ratio = strtod(optarg, &tmp);
1694 if (*tmp || reserved_ratio > 50 ||
1695 reserved_ratio < 0) {
1696 com_err(program_name, 0,
1697 _("bad reserved block ratio - %s"),
1698 optarg);
1699 usage();
1700 }
1701 m_flag = 1;
1702 open_flag = EXT2_FLAG_RW;
1703 break;
1704 case 'M':
1705 new_last_mounted = optarg;
1706 M_flag = 1;
1707 open_flag = EXT2_FLAG_RW;
1708 break;
1709 case 'o':
1710 if (mntopts_cmd) {
1711 com_err(program_name, 0, "%s",
1712 _("-o may only be specified once"));
1713 usage();
1714 }
1715 mntopts_cmd = optarg;
1716 open_flag = EXT2_FLAG_RW;
1717 break;
1718 case 'O':
1719 if (features_cmd) {
1720 com_err(program_name, 0, "%s",
1721 _("-O may only be specified once"));
1722 usage();
1723 }
1724 features_cmd = optarg;
1725 open_flag = EXT2_FLAG_RW;
1726 break;
1727 case 'Q':
1728 Q_flag = 1;
1729 parse_quota_opts(optarg);
1730 open_flag = EXT2_FLAG_RW;
1731 break;
1732 case 'r':
1733 reserved_blocks = strtoul(optarg, &tmp, 0);
1734 if (*tmp) {
1735 com_err(program_name, 0,
1736 _("bad reserved blocks count - %s"),
1737 optarg);
1738 usage();
1739 }
1740 r_flag = 1;
1741 open_flag = EXT2_FLAG_RW;
1742 break;
1743 case 's': /* Deprecated */
1744 s_flag = atoi(optarg);
1745 open_flag = EXT2_FLAG_RW;
1746 break;
1747 case 'T':
1748 T_flag = 1;
1749 last_check_time = parse_time(optarg);
1750 open_flag = EXT2_FLAG_RW;
1751 break;
1752 case 'u':
1753 resuid = strtoul(optarg, &tmp, 0);
1754 if (*tmp) {
1755 pw = getpwnam(optarg);
1756 if (pw == NULL)
1757 tmp = optarg;
1758 else {
1759 resuid = pw->pw_uid;
1760 *tmp = 0;
1761 }
1762 }
1763 if (*tmp) {
1764 com_err(program_name, 0,
1765 _("bad uid/user name - %s"),
1766 optarg);
1767 usage();
1768 }
1769 u_flag = 1;
1770 open_flag = EXT2_FLAG_RW;
1771 break;
1772 case 'U':
1773 new_UUID = optarg;
1774 U_flag = 1;
1775 open_flag = EXT2_FLAG_RW |
1776 EXT2_FLAG_JOURNAL_DEV_OK;
1777 break;
1778 case 'I':
1779 new_inode_size = strtoul(optarg, &tmp, 0);
1780 if (*tmp) {
1781 com_err(program_name, 0,
1782 _("bad inode size - %s"),
1783 optarg);
1784 usage();
1785 }
1786 if (!((new_inode_size &
1787 (new_inode_size - 1)) == 0)) {
1788 com_err(program_name, 0,
1789 _("Inode size must be a "
1790 "power of two- %s"),
1791 optarg);
1792 usage();
1793 }
1794 open_flag = EXT2_FLAG_RW;
1795 I_flag = 1;
1796 break;
1797 case 'z':
1798 undo_file = optarg;
1799 break;
1800 default:
1801 usage();
1802 }
1803 if (optind < argc - 1 || optind == argc)
1804 usage();
1805 if (!open_flag && !l_flag)
1806 usage();
1807 io_options = strchr(argv[optind], '?');
1808 if (io_options)
1809 *io_options++ = 0;
1810 device_name = blkid_get_devname(NULL, argv[optind], NULL);
1811 if (!device_name) {
1812 com_err(program_name, 0, _("Unable to resolve '%s'"),
1813 argv[optind]);
1814 exit(1);
1815 }
1816 }
1817
1818 #ifdef CONFIG_BUILD_FINDFS
1819 void do_findfs(int argc, char **argv)
1820 {
1821 char *dev;
1822
1823 if ((argc != 2) ||
1824 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
1825 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
1826 exit(2);
1827 }
1828 dev = blkid_get_devname(NULL, argv[1], NULL);
1829 if (!dev) {
1830 com_err("findfs", 0, _("Unable to resolve '%s'"),
1831 argv[1]);
1832 exit(1);
1833 }
1834 puts(dev);
1835 exit(0);
1836 }
1837 #endif
1838
1839 static int parse_extended_opts(ext2_filsys fs, const char *opts)
1840 {
1841 char *buf, *token, *next, *p, *arg;
1842 int len, hash_alg;
1843 int r_usage = 0;
1844
1845 len = strlen(opts);
1846 buf = malloc(len+1);
1847 if (!buf) {
1848 fprintf(stderr, "%s",
1849 _("Couldn't allocate memory to parse options!\n"));
1850 return 1;
1851 }
1852 strcpy(buf, opts);
1853 for (token = buf; token && *token; token = next) {
1854 p = strchr(token, ',');
1855 next = 0;
1856 if (p) {
1857 *p = 0;
1858 next = p+1;
1859 }
1860 arg = strchr(token, '=');
1861 if (arg) {
1862 *arg = 0;
1863 arg++;
1864 }
1865 if (strcmp(token, "clear-mmp") == 0 ||
1866 strcmp(token, "clear_mmp") == 0) {
1867 clear_mmp = 1;
1868 } else if (strcmp(token, "mmp_update_interval") == 0) {
1869 unsigned long intv;
1870 if (!arg) {
1871 r_usage++;
1872 continue;
1873 }
1874 intv = strtoul(arg, &p, 0);
1875 if (*p) {
1876 fprintf(stderr,
1877 _("Invalid mmp_update_interval: %s\n"),
1878 arg);
1879 r_usage++;
1880 continue;
1881 }
1882 if (intv == 0) {
1883 intv = EXT4_MMP_UPDATE_INTERVAL;
1884 } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
1885 fprintf(stderr,
1886 _("mmp_update_interval too big: %lu\n"),
1887 intv);
1888 r_usage++;
1889 continue;
1890 }
1891 printf(P_("Setting multiple mount protection update "
1892 "interval to %lu second\n",
1893 "Setting multiple mount protection update "
1894 "interval to %lu seconds\n", intv),
1895 intv);
1896 fs->super->s_mmp_update_interval = intv;
1897 ext2fs_mark_super_dirty(fs);
1898 } else if (!strcmp(token, "test_fs")) {
1899 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
1900 printf("Setting test filesystem flag\n");
1901 ext2fs_mark_super_dirty(fs);
1902 } else if (!strcmp(token, "^test_fs")) {
1903 fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
1904 printf("Clearing test filesystem flag\n");
1905 ext2fs_mark_super_dirty(fs);
1906 } else if (strcmp(token, "stride") == 0) {
1907 if (!arg) {
1908 r_usage++;
1909 continue;
1910 }
1911 stride = strtoul(arg, &p, 0);
1912 if (*p) {
1913 fprintf(stderr,
1914 _("Invalid RAID stride: %s\n"),
1915 arg);
1916 r_usage++;
1917 continue;
1918 }
1919 stride_set = 1;
1920 } else if (strcmp(token, "stripe-width") == 0 ||
1921 strcmp(token, "stripe_width") == 0) {
1922 if (!arg) {
1923 r_usage++;
1924 continue;
1925 }
1926 stripe_width = strtoul(arg, &p, 0);
1927 if (*p) {
1928 fprintf(stderr,
1929 _("Invalid RAID stripe-width: %s\n"),
1930 arg);
1931 r_usage++;
1932 continue;
1933 }
1934 stripe_width_set = 1;
1935 } else if (strcmp(token, "hash_alg") == 0 ||
1936 strcmp(token, "hash-alg") == 0) {
1937 if (!arg) {
1938 r_usage++;
1939 continue;
1940 }
1941 hash_alg = e2p_string2hash(arg);
1942 if (hash_alg < 0) {
1943 fprintf(stderr,
1944 _("Invalid hash algorithm: %s\n"),
1945 arg);
1946 r_usage++;
1947 continue;
1948 }
1949 fs->super->s_def_hash_version = hash_alg;
1950 printf(_("Setting default hash algorithm "
1951 "to %s (%d)\n"),
1952 arg, hash_alg);
1953 ext2fs_mark_super_dirty(fs);
1954 } else if (!strcmp(token, "mount_opts")) {
1955 if (!arg) {
1956 r_usage++;
1957 continue;
1958 }
1959 if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
1960 fprintf(stderr,
1961 "Extended mount options too long\n");
1962 continue;
1963 }
1964 ext_mount_opts = strdup(arg);
1965 } else
1966 r_usage++;
1967 }
1968 if (r_usage) {
1969 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
1970 "Extended options are separated by commas, "
1971 "and may take an argument which\n"
1972 "\tis set off by an equals ('=') sign.\n\n"
1973 "Valid extended options are:\n"
1974 "\tclear_mmp\n"
1975 "\thash_alg=<hash algorithm>\n"
1976 "\tmount_opts=<extended default mount options>\n"
1977 "\tstride=<RAID per-disk chunk size in blocks>\n"
1978 "\tstripe_width=<RAID stride*data disks in blocks>\n"
1979 "\ttest_fs\n"
1980 "\t^test_fs\n"));
1981 free(buf);
1982 return 1;
1983 }
1984 free(buf);
1985
1986 return 0;
1987 }
1988
1989 /*
1990 * Fill in the block bitmap bmap with the information regarding the
1991 * blocks to be moved
1992 */
1993 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
1994 ext2fs_block_bitmap bmap)
1995 {
1996 dgrp_t i;
1997 int retval;
1998 ext2_badblocks_list bb_list = 0;
1999 blk64_t j, needed_blocks = 0;
2000 blk64_t start_blk, end_blk;
2001
2002 retval = ext2fs_read_bb_inode(fs, &bb_list);
2003 if (retval)
2004 return retval;
2005
2006 for (i = 0; i < fs->group_desc_count; i++) {
2007 start_blk = ext2fs_inode_table_loc(fs, i) +
2008 fs->inode_blocks_per_group;
2009
2010 end_blk = ext2fs_inode_table_loc(fs, i) +
2011 new_ino_blks_per_grp;
2012
2013 for (j = start_blk; j < end_blk; j++) {
2014 if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2015 /*
2016 * IF the block is a bad block we fail
2017 */
2018 if (ext2fs_badblocks_list_test(bb_list, j)) {
2019 ext2fs_badblocks_list_free(bb_list);
2020 return ENOSPC;
2021 }
2022
2023 ext2fs_mark_block_bitmap2(bmap, j);
2024 } else {
2025 /*
2026 * We are going to use this block for
2027 * inode table. So mark them used.
2028 */
2029 ext2fs_mark_block_bitmap2(fs->block_map, j);
2030 }
2031 }
2032 needed_blocks += end_blk - start_blk;
2033 }
2034
2035 ext2fs_badblocks_list_free(bb_list);
2036 if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2037 return ENOSPC;
2038
2039 return 0;
2040 }
2041
2042 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2043 {
2044 dgrp_t group;
2045 group = ext2fs_group_of_blk2(fs, blk);
2046 if (ext2fs_block_bitmap_loc(fs, group) == blk)
2047 return 1;
2048 if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2049 return 1;
2050 return 0;
2051 }
2052
2053 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2054 {
2055 blk64_t start_blk, end_blk;
2056 start_blk = fs->super->s_first_data_block +
2057 EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2058 /*
2059 * We cannot get new block beyond end_blk for for the last block group
2060 * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2061 */
2062 end_blk = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2063 if (blk >= start_blk && blk <= end_blk)
2064 return 1;
2065 return 0;
2066 }
2067
2068 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2069 {
2070
2071 char *buf;
2072 dgrp_t group = 0;
2073 errcode_t retval;
2074 int meta_data = 0;
2075 blk64_t blk, new_blk, goal;
2076 struct blk_move *bmv;
2077
2078 retval = ext2fs_get_mem(fs->blocksize, &buf);
2079 if (retval)
2080 return retval;
2081
2082 for (new_blk = blk = fs->super->s_first_data_block;
2083 blk < ext2fs_blocks_count(fs->super); blk++) {
2084 if (!ext2fs_test_block_bitmap2(bmap, blk))
2085 continue;
2086
2087 if (ext2fs_is_meta_block(fs, blk)) {
2088 /*
2089 * If the block is mapping a fs meta data block
2090 * like group desc/block bitmap/inode bitmap. We
2091 * should find a block in the same group and fix
2092 * the respective fs metadata pointers. Otherwise
2093 * fail
2094 */
2095 group = ext2fs_group_of_blk2(fs, blk);
2096 goal = ext2fs_group_first_block2(fs, group);
2097 meta_data = 1;
2098
2099 } else {
2100 goal = new_blk;
2101 }
2102 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2103 if (retval)
2104 goto err_out;
2105
2106 /* new fs meta data block should be in the same group */
2107 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2108 retval = ENOSPC;
2109 goto err_out;
2110 }
2111
2112 /* Mark this block as allocated */
2113 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2114
2115 /* Add it to block move list */
2116 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2117 if (retval)
2118 goto err_out;
2119
2120 bmv->old_loc = blk;
2121 bmv->new_loc = new_blk;
2122
2123 list_add(&(bmv->list), &blk_move_list);
2124
2125 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2126 if (retval)
2127 goto err_out;
2128
2129 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2130 if (retval)
2131 goto err_out;
2132 }
2133
2134 err_out:
2135 ext2fs_free_mem(&buf);
2136 return retval;
2137 }
2138
2139 static blk64_t translate_block(blk64_t blk)
2140 {
2141 struct list_head *entry;
2142 struct blk_move *bmv;
2143
2144 list_for_each(entry, &blk_move_list) {
2145 bmv = list_entry(entry, struct blk_move, list);
2146 if (bmv->old_loc == blk)
2147 return bmv->new_loc;
2148 }
2149
2150 return 0;
2151 }
2152
2153 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2154 blk64_t *block_nr,
2155 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2156 blk64_t ref_block EXT2FS_ATTR((unused)),
2157 int ref_offset EXT2FS_ATTR((unused)),
2158 void *priv_data)
2159 {
2160 int ret = 0;
2161 blk64_t new_blk;
2162 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2163
2164 if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2165 return 0;
2166 new_blk = translate_block(*block_nr);
2167 if (new_blk) {
2168 *block_nr = new_blk;
2169 /*
2170 * This will force the ext2fs_write_inode in the iterator
2171 */
2172 ret |= BLOCK_CHANGED;
2173 }
2174
2175 return ret;
2176 }
2177
2178 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2179 {
2180 errcode_t retval = 0;
2181 ext2_ino_t ino;
2182 blk64_t blk;
2183 char *block_buf = 0;
2184 struct ext2_inode inode;
2185 ext2_inode_scan scan = NULL;
2186
2187 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2188 if (retval)
2189 return retval;
2190
2191 retval = ext2fs_open_inode_scan(fs, 0, &scan);
2192 if (retval)
2193 goto err_out;
2194
2195 while (1) {
2196 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2197 if (retval)
2198 goto err_out;
2199
2200 if (!ino)
2201 break;
2202
2203 if (inode.i_links_count == 0)
2204 continue; /* inode not in use */
2205
2206 /* FIXME!!
2207 * If we end up modifying the journal inode
2208 * the sb->s_jnl_blocks will differ. But a
2209 * subsequent e2fsck fixes that.
2210 * Do we need to fix this ??
2211 */
2212
2213 if (ext2fs_file_acl_block(fs, &inode) &&
2214 ext2fs_test_block_bitmap2(bmap,
2215 ext2fs_file_acl_block(fs, &inode))) {
2216 blk = translate_block(ext2fs_file_acl_block(fs,
2217 &inode));
2218 if (!blk)
2219 continue;
2220
2221 ext2fs_file_acl_block_set(fs, &inode, blk);
2222
2223 /*
2224 * Write the inode to disk so that inode table
2225 * resizing can work
2226 */
2227 retval = ext2fs_write_inode(fs, ino, &inode);
2228 if (retval)
2229 goto err_out;
2230 }
2231
2232 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2233 continue;
2234
2235 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2236 process_block, bmap);
2237 if (retval)
2238 goto err_out;
2239
2240 }
2241
2242 err_out:
2243 ext2fs_free_mem(&block_buf);
2244 ext2fs_close_inode_scan(scan);
2245
2246 return retval;
2247 }
2248
2249 /*
2250 * We need to scan for inode and block bitmaps that may need to be
2251 * moved. This can take place if the filesystem was formatted for
2252 * RAID arrays using the mke2fs's extended option "stride".
2253 */
2254 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2255 {
2256 dgrp_t i;
2257 blk64_t blk, new_blk;
2258
2259 for (i = 0; i < fs->group_desc_count; i++) {
2260 blk = ext2fs_block_bitmap_loc(fs, i);
2261 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2262 new_blk = translate_block(blk);
2263 if (!new_blk)
2264 continue;
2265 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2266 }
2267
2268 blk = ext2fs_inode_bitmap_loc(fs, i);
2269 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2270 new_blk = translate_block(blk);
2271 if (!new_blk)
2272 continue;
2273 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2274 }
2275 }
2276 return 0;
2277 }
2278
2279 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2280 {
2281 dgrp_t i;
2282 blk64_t blk;
2283 errcode_t retval;
2284 int new_ino_blks_per_grp;
2285 unsigned int j;
2286 char *old_itable = NULL, *new_itable = NULL;
2287 char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2288 unsigned long old_ino_size;
2289 int old_itable_size, new_itable_size;
2290
2291 old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2292 old_ino_size = EXT2_INODE_SIZE(fs->super);
2293
2294 new_ino_blks_per_grp = ext2fs_div_ceil(
2295 EXT2_INODES_PER_GROUP(fs->super) *
2296 new_ino_size,
2297 fs->blocksize);
2298
2299 new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2300
2301 retval = ext2fs_get_mem(old_itable_size, &old_itable);
2302 if (retval)
2303 return retval;
2304
2305 retval = ext2fs_get_mem(new_itable_size, &new_itable);
2306 if (retval)
2307 goto err_out;
2308
2309 tmp_old_itable = old_itable;
2310 tmp_new_itable = new_itable;
2311
2312 for (i = 0; i < fs->group_desc_count; i++) {
2313 blk = ext2fs_inode_table_loc(fs, i);
2314 retval = io_channel_read_blk64(fs->io, blk,
2315 fs->inode_blocks_per_group, old_itable);
2316 if (retval)
2317 goto err_out;
2318
2319 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2320 memcpy(new_itable, old_itable, old_ino_size);
2321
2322 memset(new_itable+old_ino_size, 0,
2323 new_ino_size - old_ino_size);
2324
2325 new_itable += new_ino_size;
2326 old_itable += old_ino_size;
2327 }
2328
2329 /* reset the pointer */
2330 old_itable = tmp_old_itable;
2331 new_itable = tmp_new_itable;
2332
2333 retval = io_channel_write_blk64(fs->io, blk,
2334 new_ino_blks_per_grp, new_itable);
2335 if (retval)
2336 goto err_out;
2337 }
2338
2339 /* Update the meta data */
2340 fs->inode_blocks_per_group = new_ino_blks_per_grp;
2341 ext2fs_free_inode_cache(fs->icache);
2342 fs->icache = 0;
2343 fs->super->s_inode_size = new_ino_size;
2344
2345 err_out:
2346 if (old_itable)
2347 ext2fs_free_mem(&old_itable);
2348
2349 if (new_itable)
2350 ext2fs_free_mem(&new_itable);
2351
2352 return retval;
2353 }
2354
2355 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
2356 {
2357 blk64_t blk;
2358 ext2_ino_t ino;
2359 unsigned int group = 0;
2360 unsigned int count = 0;
2361 int total_free = 0;
2362 int group_free = 0;
2363
2364 /*
2365 * First calculate the block statistics
2366 */
2367 for (blk = fs->super->s_first_data_block;
2368 blk < ext2fs_blocks_count(fs->super); blk++) {
2369 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
2370 group_free++;
2371 total_free++;
2372 }
2373 count++;
2374 if ((count == fs->super->s_blocks_per_group) ||
2375 (blk == ext2fs_blocks_count(fs->super)-1)) {
2376 ext2fs_bg_free_blocks_count_set(fs, group++,
2377 group_free);
2378 count = 0;
2379 group_free = 0;
2380 }
2381 }
2382 total_free = EXT2FS_C2B(fs, total_free);
2383 ext2fs_free_blocks_count_set(fs->super, total_free);
2384
2385 /*
2386 * Next, calculate the inode statistics
2387 */
2388 group_free = 0;
2389 total_free = 0;
2390 count = 0;
2391 group = 0;
2392
2393 /* Protect loop from wrap-around if s_inodes_count maxed */
2394 for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
2395 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
2396 group_free++;
2397 total_free++;
2398 }
2399 count++;
2400 if ((count == fs->super->s_inodes_per_group) ||
2401 (ino == fs->super->s_inodes_count)) {
2402 ext2fs_bg_free_inodes_count_set(fs, group++,
2403 group_free);
2404 count = 0;
2405 group_free = 0;
2406 }
2407 }
2408 fs->super->s_free_inodes_count = total_free;
2409 ext2fs_mark_super_dirty(fs);
2410 return 0;
2411 }
2412
2413 #define list_for_each_safe(pos, pnext, head) \
2414 for (pos = (head)->next, pnext = pos->next; pos != (head); \
2415 pos = pnext, pnext = pos->next)
2416
2417 static void free_blk_move_list(void)
2418 {
2419 struct list_head *entry, *tmp;
2420 struct blk_move *bmv;
2421
2422 list_for_each_safe(entry, tmp, &blk_move_list) {
2423 bmv = list_entry(entry, struct blk_move, list);
2424 list_del(entry);
2425 ext2fs_free_mem(&bmv);
2426 }
2427 return;
2428 }
2429
2430 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2431 {
2432 errcode_t retval;
2433 int new_ino_blks_per_grp;
2434 ext2fs_block_bitmap bmap;
2435
2436 retval = ext2fs_read_inode_bitmap(fs);
2437 if (retval) {
2438 fputs(_("Failed to read inode bitmap\n"), stderr);
2439 return retval;
2440 }
2441 retval = ext2fs_read_block_bitmap(fs);
2442 if (retval) {
2443 fputs(_("Failed to read block bitmap\n"), stderr);
2444 return retval;
2445 }
2446 INIT_LIST_HEAD(&blk_move_list);
2447
2448
2449 new_ino_blks_per_grp = ext2fs_div_ceil(
2450 EXT2_INODES_PER_GROUP(fs->super)*
2451 new_size,
2452 fs->blocksize);
2453
2454 /* We may change the file system.
2455 * Mark the file system as invalid so that
2456 * the user is prompted to run fsck.
2457 */
2458 fs->super->s_state &= ~EXT2_VALID_FS;
2459
2460 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2461 &bmap);
2462 if (retval) {
2463 fputs(_("Failed to allocate block bitmap when "
2464 "increasing inode size\n"), stderr);
2465 return retval;
2466 }
2467 retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2468 if (retval) {
2469 fputs(_("Not enough space to increase inode size \n"), stderr);
2470 goto err_out;
2471 }
2472 retval = move_block(fs, bmap);
2473 if (retval) {
2474 fputs(_("Failed to relocate blocks during inode resize \n"),
2475 stderr);
2476 goto err_out;
2477 }
2478 retval = inode_scan_and_fix(fs, bmap);
2479 if (retval)
2480 goto err_out_undo;
2481
2482 retval = group_desc_scan_and_fix(fs, bmap);
2483 if (retval)
2484 goto err_out_undo;
2485
2486 retval = expand_inode_table(fs, new_size);
2487 if (retval)
2488 goto err_out_undo;
2489
2490 ext2fs_calculate_summary_stats(fs);
2491
2492 fs->super->s_state |= EXT2_VALID_FS;
2493 /* mark super block and block bitmap as dirty */
2494 ext2fs_mark_super_dirty(fs);
2495 ext2fs_mark_bb_dirty(fs);
2496
2497 err_out:
2498 free_blk_move_list();
2499 ext2fs_free_block_bitmap(bmap);
2500
2501 return retval;
2502
2503 err_out_undo:
2504 free_blk_move_list();
2505 ext2fs_free_block_bitmap(bmap);
2506 fputs(_("Error in resizing the inode size.\n"
2507 "Run e2undo to undo the "
2508 "file system changes. \n"), stderr);
2509
2510 return retval;
2511 }
2512
2513 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2514 {
2515 errcode_t retval = 0;
2516 const char *tdb_dir;
2517 char *tdb_file = NULL;
2518 char *dev_name, *tmp_name;
2519
2520 /* (re)open a specific undo file */
2521 if (undo_file && undo_file[0] != 0) {
2522 retval = set_undo_io_backing_manager(*io_ptr);
2523 if (retval)
2524 goto err;
2525 *io_ptr = undo_io_manager;
2526 retval = set_undo_io_backup_file(undo_file);
2527 if (retval)
2528 goto err;
2529 printf(_("Overwriting existing filesystem; this can be undone "
2530 "using the command:\n"
2531 " e2undo %s %s\n\n"),
2532 undo_file, name);
2533 return retval;
2534 }
2535
2536 /*
2537 * Configuration via a conf file would be
2538 * nice
2539 */
2540 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2541 if (!tdb_dir)
2542 tdb_dir = "/var/lib/e2fsprogs";
2543
2544 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2545 access(tdb_dir, W_OK))
2546 return 0;
2547
2548 tmp_name = strdup(name);
2549 if (!tmp_name)
2550 goto errout;
2551 dev_name = basename(tmp_name);
2552 tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2553 if (!tdb_file) {
2554 free(tmp_name);
2555 goto errout;
2556 }
2557 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2558 free(tmp_name);
2559
2560 if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2561 retval = errno;
2562 com_err(program_name, retval,
2563 _("while trying to delete %s"), tdb_file);
2564 goto errout;
2565 }
2566
2567 retval = set_undo_io_backing_manager(*io_ptr);
2568 if (retval)
2569 goto errout;
2570 *io_ptr = undo_io_manager;
2571 retval = set_undo_io_backup_file(tdb_file);
2572 if (retval)
2573 goto errout;
2574 printf(_("Overwriting existing filesystem; this can be undone "
2575 "using the command:\n"
2576 " e2undo %s %s\n\n"),
2577 tdb_file, name);
2578
2579 free(tdb_file);
2580 return 0;
2581 errout:
2582 free(tdb_file);
2583 err:
2584 com_err("tune2fs", retval, "while trying to setup undo file\n");
2585 return retval;
2586 }
2587
2588 int
2589 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2590 {
2591 int retval, nr_users, start;
2592 journal_superblock_t *jsb;
2593 ext2_filsys jfs;
2594 __u8 *j_uuid;
2595 char *journal_path;
2596 char uuid[UUID_STR_SIZE];
2597 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2598
2599 if (!(sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) ||
2600 uuid_is_null(sb->s_journal_uuid))
2601 return 0;
2602
2603 uuid_unparse(sb->s_journal_uuid, uuid);
2604 journal_path = blkid_get_devname(NULL, "UUID", uuid);
2605 if (!journal_path)
2606 return 0;
2607
2608 retval = ext2fs_open2(journal_path, io_options,
2609 EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2610 0, 0, unix_io_manager, &jfs);
2611 if (retval) {
2612 com_err(program_name, retval,
2613 _("while trying to open %s"),
2614 journal_path);
2615 return retval;
2616 }
2617
2618 retval = get_journal_sb(jfs, buf);
2619 if (retval != 0) {
2620 if (retval == EXT2_ET_UNSUPP_FEATURE)
2621 fprintf(stderr, _("%s is not a journal device.\n"),
2622 journal_path);
2623 return retval;
2624 }
2625
2626 jsb = (journal_superblock_t *) buf;
2627 /* Find the filesystem UUID */
2628 nr_users = ntohl(jsb->s_nr_users);
2629
2630 j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2631 if (j_uuid == NULL) {
2632 fputs(_("Filesystem's UUID not found on journal device.\n"),
2633 stderr);
2634 return EXT2_ET_LOAD_EXT_JOURNAL;
2635 }
2636
2637 memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2638
2639 start = ext2fs_journal_sb_start(jfs->blocksize);
2640 /* Write back the journal superblock */
2641 retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2642 if (retval != 0) {
2643 com_err(program_name, retval,
2644 "while writing journal superblock.");
2645 return retval;
2646 }
2647
2648 ext2fs_close(jfs);
2649
2650 return 0;
2651 }
2652
2653 int main(int argc, char **argv)
2654 {
2655 errcode_t retval;
2656 ext2_filsys fs;
2657 struct ext2_super_block *sb;
2658 io_manager io_ptr, io_ptr_orig = NULL;
2659 int rc = 0;
2660
2661 #ifdef ENABLE_NLS
2662 setlocale(LC_MESSAGES, "");
2663 setlocale(LC_CTYPE, "");
2664 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2665 textdomain(NLS_CAT_NAME);
2666 set_com_err_gettext(gettext);
2667 #endif
2668 if (argc && *argv)
2669 program_name = *argv;
2670 add_error_table(&et_ext2_error_table);
2671
2672 #ifdef CONFIG_BUILD_FINDFS
2673 if (strcmp(get_progname(argv[0]), "findfs") == 0)
2674 do_findfs(argc, argv);
2675 #endif
2676 if (strcmp(get_progname(argv[0]), "e2label") == 0)
2677 parse_e2label_options(argc, argv);
2678 else
2679 parse_tune2fs_options(argc, argv);
2680
2681 #ifdef CONFIG_TESTIO_DEBUG
2682 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2683 io_ptr = test_io_manager;
2684 test_io_backing_manager = unix_io_manager;
2685 } else
2686 #endif
2687 io_ptr = unix_io_manager;
2688
2689 retry_open:
2690 if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2691 open_flag |= EXT2_FLAG_SKIP_MMP;
2692
2693 open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_JOURNAL_DEV_OK;
2694
2695 /* keep the filesystem struct around to dump MMP data */
2696 open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2697
2698 retval = ext2fs_open2(device_name, io_options, open_flag,
2699 0, 0, io_ptr, &fs);
2700 if (retval) {
2701 com_err(program_name, retval,
2702 _("while trying to open %s"),
2703 device_name);
2704 if (retval == EXT2_ET_MMP_FSCK_ON ||
2705 retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2706 dump_mmp_msg(fs->mmp_buf,
2707 _("If you are sure the filesystem "
2708 "is not in use on any node, run:\n"
2709 "'tune2fs -f -E clear_mmp {device}'\n"));
2710 else if (retval == EXT2_ET_MMP_FAILED)
2711 dump_mmp_msg(fs->mmp_buf, NULL);
2712 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2713 fprintf(stderr,
2714 _("MMP block magic is bad. Try to fix it by "
2715 "running:\n'e2fsck -f %s'\n"), device_name);
2716 else if (retval == EXT2_ET_BAD_MAGIC)
2717 check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2718 else if (retval != EXT2_ET_MMP_FAILED)
2719 fprintf(stderr, "%s",
2720 _("Couldn't find valid filesystem superblock.\n"));
2721
2722 ext2fs_free(fs);
2723 exit(1);
2724 }
2725 if (EXT2_HAS_INCOMPAT_FEATURE(fs->super,
2726 EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
2727 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
2728 ext2fs_free(fs);
2729 exit(1);
2730 }
2731 fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
2732
2733 if (I_flag) {
2734 /*
2735 * Check the inode size is right so we can issue an
2736 * error message and bail before setting up the tdb
2737 * file.
2738 */
2739 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
2740 fprintf(stderr, _("The inode size is already %lu\n"),
2741 new_inode_size);
2742 rc = 1;
2743 goto closefs;
2744 }
2745 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
2746 fprintf(stderr, "%s",
2747 _("Shrinking inode size is not supported\n"));
2748 rc = 1;
2749 goto closefs;
2750 }
2751 if (new_inode_size > fs->blocksize) {
2752 fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
2753 new_inode_size, fs->blocksize);
2754 rc = 1;
2755 goto closefs;
2756 }
2757 /*
2758 * If inode resize is requested use the
2759 * Undo I/O manager
2760 */
2761 undo_file = "";
2762 }
2763
2764 /* Set up an undo file */
2765 if (undo_file && io_ptr_orig == NULL) {
2766 io_ptr_orig = io_ptr;
2767 retval = tune2fs_setup_tdb(device_name, &io_ptr);
2768 if (retval) {
2769 rc = 1;
2770 goto closefs;
2771 }
2772 if (io_ptr != io_ptr_orig) {
2773 ext2fs_close_free(&fs);
2774 goto retry_open;
2775 }
2776 }
2777
2778 sb = fs->super;
2779 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2780
2781 if (print_label) {
2782 /* For e2label emulation */
2783 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
2784 sb->s_volume_name);
2785 remove_error_table(&et_ext2_error_table);
2786 goto closefs;
2787 }
2788
2789 retval = ext2fs_check_if_mounted(device_name, &mount_flags);
2790 if (retval) {
2791 com_err("ext2fs_check_if_mount", retval,
2792 _("while determining whether %s is mounted."),
2793 device_name);
2794 rc = 1;
2795 goto closefs;
2796 }
2797 /* Normally we only need to write out the superblock */
2798 fs->flags |= EXT2_FLAG_SUPER_ONLY;
2799
2800 if (c_flag) {
2801 sb->s_max_mnt_count = max_mount_count;
2802 ext2fs_mark_super_dirty(fs);
2803 printf(_("Setting maximal mount count to %d\n"),
2804 max_mount_count);
2805 }
2806 if (C_flag) {
2807 sb->s_mnt_count = mount_count;
2808 ext2fs_mark_super_dirty(fs);
2809 printf(_("Setting current mount count to %d\n"), mount_count);
2810 }
2811 if (e_flag) {
2812 sb->s_errors = errors;
2813 ext2fs_mark_super_dirty(fs);
2814 printf(_("Setting error behavior to %d\n"), errors);
2815 }
2816 if (g_flag) {
2817 sb->s_def_resgid = resgid;
2818 ext2fs_mark_super_dirty(fs);
2819 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
2820 }
2821 if (i_flag) {
2822 if ((unsigned long long)interval >= (1ULL << 32)) {
2823 com_err(program_name, 0,
2824 _("interval between checks is too big (%lu)"),
2825 interval);
2826 rc = 1;
2827 goto closefs;
2828 }
2829 sb->s_checkinterval = interval;
2830 ext2fs_mark_super_dirty(fs);
2831 printf(_("Setting interval between checks to %lu seconds\n"),
2832 interval);
2833 }
2834 if (m_flag) {
2835 ext2fs_r_blocks_count_set(sb, reserved_ratio *
2836 ext2fs_blocks_count(sb) / 100.0);
2837 ext2fs_mark_super_dirty(fs);
2838 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
2839 reserved_ratio, ext2fs_r_blocks_count(sb));
2840 }
2841 if (r_flag) {
2842 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
2843 com_err(program_name, 0,
2844 _("reserved blocks count is too big (%llu)"),
2845 reserved_blocks);
2846 rc = 1;
2847 goto closefs;
2848 }
2849 ext2fs_r_blocks_count_set(sb, reserved_blocks);
2850 ext2fs_mark_super_dirty(fs);
2851 printf(_("Setting reserved blocks count to %llu\n"),
2852 reserved_blocks);
2853 }
2854 if (s_flag == 1) {
2855 if (sb->s_feature_ro_compat &
2856 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) {
2857 fputs(_("\nThe filesystem already has sparse "
2858 "superblocks.\n"), stderr);
2859 } else if (sb->s_feature_incompat &
2860 EXT2_FEATURE_INCOMPAT_META_BG) {
2861 fputs(_("\nSetting the sparse superblock flag not "
2862 "supported\nfor filesystems with "
2863 "the meta_bg feature enabled.\n"),
2864 stderr);
2865 rc = 1;
2866 goto closefs;
2867 } else {
2868 sb->s_feature_ro_compat |=
2869 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
2870 sb->s_state &= ~EXT2_VALID_FS;
2871 ext2fs_mark_super_dirty(fs);
2872 printf(_("\nSparse superblock flag set. %s"),
2873 _(please_fsck));
2874 }
2875 }
2876 if (s_flag == 0) {
2877 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
2878 stderr);
2879 rc = 1;
2880 goto closefs;
2881 }
2882 if (T_flag) {
2883 sb->s_lastcheck = last_check_time;
2884 ext2fs_mark_super_dirty(fs);
2885 printf(_("Setting time filesystem last checked to %s\n"),
2886 ctime(&last_check_time));
2887 }
2888 if (u_flag) {
2889 sb->s_def_resuid = resuid;
2890 ext2fs_mark_super_dirty(fs);
2891 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
2892 }
2893 if (L_flag) {
2894 if (strlen(new_label) > sizeof(sb->s_volume_name))
2895 fputs(_("Warning: label too long, truncating.\n"),
2896 stderr);
2897 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
2898 strncpy(sb->s_volume_name, new_label,
2899 sizeof(sb->s_volume_name));
2900 ext2fs_mark_super_dirty(fs);
2901 }
2902 if (M_flag) {
2903 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
2904 strncpy(sb->s_last_mounted, new_last_mounted,
2905 sizeof(sb->s_last_mounted));
2906 ext2fs_mark_super_dirty(fs);
2907 }
2908 if (mntopts_cmd) {
2909 rc = update_mntopts(fs, mntopts_cmd);
2910 if (rc)
2911 goto closefs;
2912 }
2913 if (features_cmd) {
2914 rc = update_feature_set(fs, features_cmd);
2915 if (rc)
2916 goto closefs;
2917 }
2918 if (extended_cmd) {
2919 rc = parse_extended_opts(fs, extended_cmd);
2920 if (rc)
2921 goto closefs;
2922 if (clear_mmp && !f_flag) {
2923 fputs(_("Error in using clear_mmp. "
2924 "It must be used with -f\n"),
2925 stderr);
2926 goto closefs;
2927 }
2928 }
2929 if (clear_mmp) {
2930 rc = ext2fs_mmp_clear(fs);
2931 goto closefs;
2932 }
2933 if (journal_size || journal_device) {
2934 rc = add_journal(fs);
2935 if (rc)
2936 goto closefs;
2937 }
2938
2939 if (Q_flag) {
2940 if (mount_flags & EXT2_MF_MOUNTED) {
2941 fputs(_("The quota feature may only be changed when "
2942 "the filesystem is unmounted.\n"), stderr);
2943 rc = 1;
2944 goto closefs;
2945 }
2946 handle_quota_options(fs);
2947 }
2948
2949 if (U_flag) {
2950 int set_csum = 0;
2951 dgrp_t i;
2952 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2953 __u8 old_uuid[UUID_SIZE];
2954
2955 if (ext2fs_has_group_desc_csum(fs)) {
2956 /*
2957 * Changing the UUID requires rewriting all metadata,
2958 * which can race with a mounted fs. Don't allow that.
2959 */
2960 if (mount_flags & EXT2_MF_MOUNTED) {
2961 fputs(_("The UUID may only be "
2962 "changed when the filesystem is "
2963 "unmounted.\n"), stderr);
2964 exit(1);
2965 }
2966 if (check_fsck_needed(fs))
2967 exit(1);
2968
2969 /*
2970 * Determine if the block group checksums are
2971 * correct so we know whether or not to set
2972 * them later on.
2973 */
2974 for (i = 0; i < fs->group_desc_count; i++)
2975 if (!ext2fs_group_desc_csum_verify(fs, i))
2976 break;
2977 if (i >= fs->group_desc_count)
2978 set_csum = 1;
2979 }
2980
2981 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
2982 if ((strcasecmp(new_UUID, "null") == 0) ||
2983 (strcasecmp(new_UUID, "clear") == 0)) {
2984 uuid_clear(sb->s_uuid);
2985 } else if (strcasecmp(new_UUID, "time") == 0) {
2986 uuid_generate_time(sb->s_uuid);
2987 } else if (strcasecmp(new_UUID, "random") == 0) {
2988 uuid_generate(sb->s_uuid);
2989 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
2990 com_err(program_name, 0, "%s",
2991 _("Invalid UUID format\n"));
2992 rc = 1;
2993 goto closefs;
2994 }
2995 ext2fs_init_csum_seed(fs);
2996 if (set_csum) {
2997 for (i = 0; i < fs->group_desc_count; i++)
2998 ext2fs_group_desc_csum_set(fs, i);
2999 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3000 }
3001
3002 /* If this is a journal dev, we need to copy UUID into jsb */
3003 if (!(rc = get_journal_sb(fs, buf))) {
3004 journal_superblock_t *jsb;
3005
3006 jsb = (journal_superblock_t *) buf;
3007 fputs(_("Need to update journal superblock.\n"), stdout);
3008 memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3009
3010 /* Writeback the journal superblock */
3011 if ((rc = io_channel_write_blk64(fs->io,
3012 ext2fs_journal_sb_start(fs->blocksize),
3013 -SUPERBLOCK_SIZE, buf)))
3014 goto closefs;
3015 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3016 goto closefs;
3017 else {
3018 rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3019
3020 if ((rc = fs_update_journal_user(sb, old_uuid)))
3021 goto closefs;
3022 }
3023
3024 ext2fs_mark_super_dirty(fs);
3025 if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
3026 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
3027 rewrite_checksums = 1;
3028 }
3029
3030 if (I_flag) {
3031 if (mount_flags & EXT2_MF_MOUNTED) {
3032 fputs(_("The inode size may only be "
3033 "changed when the filesystem is "
3034 "unmounted.\n"), stderr);
3035 rc = 1;
3036 goto closefs;
3037 }
3038 if (fs->super->s_feature_incompat &
3039 EXT4_FEATURE_INCOMPAT_FLEX_BG) {
3040 fputs(_("Changing the inode size not supported for "
3041 "filesystems with the flex_bg\n"
3042 "feature enabled.\n"),
3043 stderr);
3044 rc = 1;
3045 goto closefs;
3046 }
3047 /*
3048 * We want to update group descriptor also
3049 * with the new free inode count
3050 */
3051 if (rewrite_checksums)
3052 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3053 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3054 retval = resize_inode(fs, new_inode_size);
3055 if (rewrite_checksums)
3056 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3057 if (retval == 0) {
3058 printf(_("Setting inode size %lu\n"),
3059 new_inode_size);
3060 rewrite_checksums = 1;
3061 } else {
3062 printf("%s", _("Failed to change inode size\n"));
3063 rc = 1;
3064 goto closefs;
3065 }
3066 }
3067
3068 if (rewrite_checksums)
3069 rewrite_metadata_checksums(fs);
3070
3071 if (l_flag)
3072 list_super(sb);
3073 if (stride_set) {
3074 sb->s_raid_stride = stride;
3075 ext2fs_mark_super_dirty(fs);
3076 printf(_("Setting stride size to %d\n"), stride);
3077 }
3078 if (stripe_width_set) {
3079 sb->s_raid_stripe_width = stripe_width;
3080 ext2fs_mark_super_dirty(fs);
3081 printf(_("Setting stripe width to %d\n"), stripe_width);
3082 }
3083 if (ext_mount_opts) {
3084 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3085 sizeof(fs->super->s_mount_opts));
3086 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3087 ext2fs_mark_super_dirty(fs);
3088 printf(_("Setting extended default mount options to '%s'\n"),
3089 ext_mount_opts);
3090 free(ext_mount_opts);
3091 }
3092 free(device_name);
3093 remove_error_table(&et_ext2_error_table);
3094
3095 closefs:
3096 if (rc) {
3097 ext2fs_mmp_stop(fs);
3098 exit(1);
3099 }
3100
3101 convert_64bit(fs, feature_64bit);
3102 return (ext2fs_close_free(&fs) ? 1 : 0);
3103 }
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