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 int enabling_casefold;
105
106 int journal_size, journal_flags;
107 char *journal_device;
108 static blk64_t journal_location = ~0LL;
109
110 static struct list_head blk_move_list;
111
112 struct blk_move {
113 struct list_head list;
114 blk64_t old_loc;
115 blk64_t new_loc;
116 };
117
118 errcode_t ext2fs_run_ext3_journal(ext2_filsys *fs);
119
120 static const char *fsck_explain = N_("\nThis operation requires a freshly checked filesystem.\n");
121
122 static const char *please_fsck = N_("Please run e2fsck -f on the filesystem.\n");
123 static const char *please_dir_fsck =
124 N_("Please run e2fsck -fD on the filesystem.\n");
125
126 #ifdef CONFIG_BUILD_FINDFS
127 void do_findfs(int argc, char **argv);
128 #endif
129
130 #ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jbd-debug */
131 int journal_enable_debug = -1;
132 #endif
133
usage(void)134 static void usage(void)
135 {
136 fprintf(stderr,
137 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] [-f] "
138 "[-g group]\n"
139 "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
140 "\t[-m reserved_blocks_percent] [-o [^]mount_options[,...]]\n"
141 "\t[-r reserved_blocks_count] [-u user] [-C mount_count]\n"
142 "\t[-L volume_label] [-M last_mounted_dir]\n"
143 "\t[-O [^]feature[,...]] [-Q quota_options]\n"
144 "\t[-E extended-option[,...]] [-T last_check_time] "
145 "[-U UUID]\n\t[-I new_inode_size] [-z undo_file] device\n"),
146 program_name);
147 exit(1);
148 }
149
150 static __u32 ok_features[3] = {
151 /* Compat */
152 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
153 EXT2_FEATURE_COMPAT_DIR_INDEX |
154 EXT4_FEATURE_COMPAT_STABLE_INODES,
155 /* Incompat */
156 EXT2_FEATURE_INCOMPAT_FILETYPE |
157 EXT3_FEATURE_INCOMPAT_EXTENTS |
158 EXT4_FEATURE_INCOMPAT_FLEX_BG |
159 EXT4_FEATURE_INCOMPAT_EA_INODE|
160 EXT4_FEATURE_INCOMPAT_MMP |
161 EXT4_FEATURE_INCOMPAT_64BIT |
162 EXT4_FEATURE_INCOMPAT_ENCRYPT |
163 EXT4_FEATURE_INCOMPAT_CSUM_SEED |
164 EXT4_FEATURE_INCOMPAT_LARGEDIR |
165 EXT4_FEATURE_INCOMPAT_CASEFOLD,
166 /* R/O compat */
167 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
168 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
169 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
170 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
171 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
172 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
173 EXT4_FEATURE_RO_COMPAT_QUOTA |
174 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
175 EXT4_FEATURE_RO_COMPAT_READONLY |
176 EXT4_FEATURE_RO_COMPAT_PROJECT |
177 EXT4_FEATURE_RO_COMPAT_VERITY
178 };
179
180 static __u32 clear_ok_features[3] = {
181 /* Compat */
182 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
183 EXT2_FEATURE_COMPAT_RESIZE_INODE |
184 EXT2_FEATURE_COMPAT_DIR_INDEX |
185 EXT4_FEATURE_COMPAT_STABLE_INODES,
186 /* Incompat */
187 EXT2_FEATURE_INCOMPAT_FILETYPE |
188 EXT4_FEATURE_INCOMPAT_FLEX_BG |
189 EXT4_FEATURE_INCOMPAT_MMP |
190 EXT4_FEATURE_INCOMPAT_64BIT |
191 EXT4_FEATURE_INCOMPAT_CSUM_SEED,
192 /* R/O compat */
193 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
194 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
195 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
196 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
197 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
198 EXT4_FEATURE_RO_COMPAT_QUOTA |
199 EXT4_FEATURE_RO_COMPAT_PROJECT |
200 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
201 EXT4_FEATURE_RO_COMPAT_READONLY
202 };
203
204 /**
205 * Try to get journal super block if any
206 */
get_journal_sb(ext2_filsys jfs,char buf[SUPERBLOCK_SIZE])207 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
208 {
209 int retval;
210 journal_superblock_t *jsb;
211
212 if (!ext2fs_has_feature_journal_dev(jfs->super)) {
213 return EXT2_ET_UNSUPP_FEATURE;
214 }
215
216 /* Get the journal superblock */
217 if ((retval = io_channel_read_blk64(jfs->io,
218 ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
219 com_err(program_name, retval, "%s",
220 _("while reading journal superblock"));
221 return retval;
222 }
223
224 jsb = (journal_superblock_t *) buf;
225 if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
226 (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
227 fputs(_("Journal superblock not found!\n"), stderr);
228 return EXT2_ET_BAD_MAGIC;
229 }
230
231 return 0;
232 }
233
journal_user(__u8 uuid[UUID_SIZE],__u8 s_users[JFS_USERS_SIZE],int nr_users)234 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JFS_USERS_SIZE],
235 int nr_users)
236 {
237 int i;
238 for (i = 0; i < nr_users; i++) {
239 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
240 return &s_users[i * UUID_SIZE];
241 }
242
243 return NULL;
244 }
245
246 /*
247 * Remove an external journal from the filesystem
248 */
remove_journal_device(ext2_filsys fs)249 static int remove_journal_device(ext2_filsys fs)
250 {
251 char *journal_path;
252 ext2_filsys jfs;
253 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
254 journal_superblock_t *jsb;
255 int i, nr_users;
256 errcode_t retval;
257 int commit_remove_journal = 0;
258 io_manager io_ptr;
259
260 if (f_flag)
261 commit_remove_journal = 1; /* force removal even if error */
262
263 uuid_unparse(fs->super->s_journal_uuid, buf);
264 journal_path = blkid_get_devname(NULL, "UUID", buf);
265
266 if (!journal_path) {
267 journal_path =
268 ext2fs_find_block_device(fs->super->s_journal_dev);
269 if (!journal_path)
270 goto no_valid_journal;
271 }
272
273 #ifdef CONFIG_TESTIO_DEBUG
274 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
275 io_ptr = test_io_manager;
276 test_io_backing_manager = unix_io_manager;
277 } else
278 #endif
279 io_ptr = unix_io_manager;
280 retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
281 EXT2_FLAG_JOURNAL_DEV_OK, 0,
282 fs->blocksize, io_ptr, &jfs);
283 if (retval) {
284 com_err(program_name, retval, "%s",
285 _("while trying to open external journal"));
286 goto no_valid_journal;
287 }
288
289 if ((retval = get_journal_sb(jfs, buf))) {
290 if (retval == EXT2_ET_UNSUPP_FEATURE)
291 fprintf(stderr, _("%s is not a journal device.\n"),
292 journal_path);
293 goto no_valid_journal;
294 }
295
296 jsb = (journal_superblock_t *) buf;
297 /* Find the filesystem UUID */
298 nr_users = ntohl(jsb->s_nr_users);
299 if (nr_users > JFS_USERS_MAX) {
300 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
301 "is too high (%d).\n"), nr_users);
302 commit_remove_journal = 1;
303 goto no_valid_journal;
304 }
305
306 if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
307 fputs(_("Filesystem's UUID not found on journal device.\n"),
308 stderr);
309 commit_remove_journal = 1;
310 goto no_valid_journal;
311 }
312 nr_users--;
313 for (i = 0; i < nr_users; i++)
314 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
315 jsb->s_nr_users = htonl(nr_users);
316
317 /* Write back the journal superblock */
318 retval = io_channel_write_blk64(jfs->io,
319 ext2fs_journal_sb_start(fs->blocksize),
320 -SUPERBLOCK_SIZE, buf);
321 if (retval) {
322 com_err(program_name, retval,
323 "while writing journal superblock.");
324 goto no_valid_journal;
325 }
326
327 commit_remove_journal = 1;
328
329 no_valid_journal:
330 if (commit_remove_journal == 0) {
331 fputs(_("Cannot locate journal device. It was NOT removed\n"
332 "Use -f option to remove missing journal device.\n"),
333 stderr);
334 return 1;
335 }
336 fs->super->s_journal_dev = 0;
337 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
338 uuid_clear(fs->super->s_journal_uuid);
339 ext2fs_mark_super_dirty(fs);
340 fputs(_("Journal removed\n"), stdout);
341 free(journal_path);
342
343 return 0;
344 }
345
346 /* Helper function for remove_journal_inode */
release_blocks_proc(ext2_filsys fs,blk64_t * blocknr,e2_blkcnt_t blockcnt EXT2FS_ATTR ((unused)),blk64_t ref_block EXT2FS_ATTR ((unused)),int ref_offset EXT2FS_ATTR ((unused)),void * private EXT2FS_ATTR ((unused)))347 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
348 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
349 blk64_t ref_block EXT2FS_ATTR((unused)),
350 int ref_offset EXT2FS_ATTR((unused)),
351 void *private EXT2FS_ATTR((unused)))
352 {
353 blk64_t block;
354 int group;
355
356 block = *blocknr;
357 ext2fs_unmark_block_bitmap2(fs->block_map, block);
358 group = ext2fs_group_of_blk2(fs, block);
359 ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
360 ext2fs_group_desc_csum_set(fs, group);
361 ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
362 return 0;
363 }
364
365 /*
366 * Remove the journal inode from the filesystem
367 */
remove_journal_inode(ext2_filsys fs)368 static errcode_t remove_journal_inode(ext2_filsys fs)
369 {
370 struct ext2_inode inode;
371 errcode_t retval;
372 ino_t ino = fs->super->s_journal_inum;
373
374 retval = ext2fs_read_inode(fs, ino, &inode);
375 if (retval) {
376 com_err(program_name, retval, "%s",
377 _("while reading journal inode"));
378 return retval;
379 }
380 if (ino == EXT2_JOURNAL_INO) {
381 retval = ext2fs_read_bitmaps(fs);
382 if (retval) {
383 com_err(program_name, retval, "%s",
384 _("while reading bitmaps"));
385 return retval;
386 }
387 retval = ext2fs_block_iterate3(fs, ino,
388 BLOCK_FLAG_READ_ONLY, NULL,
389 release_blocks_proc, NULL);
390 if (retval) {
391 com_err(program_name, retval, "%s",
392 _("while clearing journal inode"));
393 return retval;
394 }
395 memset(&inode, 0, sizeof(inode));
396 ext2fs_mark_bb_dirty(fs);
397 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
398 } else
399 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
400 retval = ext2fs_write_inode(fs, ino, &inode);
401 if (retval) {
402 com_err(program_name, retval, "%s",
403 _("while writing journal inode"));
404 return retval;
405 }
406 fs->super->s_journal_inum = 0;
407 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
408 ext2fs_mark_super_dirty(fs);
409
410 return 0;
411 }
412
413 /*
414 * Update the default mount options
415 */
update_mntopts(ext2_filsys fs,char * mntopts)416 static int update_mntopts(ext2_filsys fs, char *mntopts)
417 {
418 struct ext2_super_block *sb = fs->super;
419
420 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
421 fprintf(stderr, _("Invalid mount option set: %s\n"),
422 mntopts);
423 return 1;
424 }
425 ext2fs_mark_super_dirty(fs);
426
427 return 0;
428 }
429
check_fsck_needed(ext2_filsys fs,const char * prompt)430 static void check_fsck_needed(ext2_filsys fs, const char *prompt)
431 {
432 /* Refuse to modify anything but a freshly checked valid filesystem. */
433 if (!(fs->super->s_state & EXT2_VALID_FS) ||
434 (fs->super->s_state & EXT2_ERROR_FS) ||
435 (fs->super->s_lastcheck < fs->super->s_mtime)) {
436 puts(_(fsck_explain));
437 puts(_(please_fsck));
438 if (mount_flags & EXT2_MF_READONLY)
439 printf("%s", _("(and reboot afterwards!)\n"));
440 exit(1);
441 }
442
443 /* Give the admin a few seconds to bail out of a dangerous op. */
444 if (!getenv("TUNE2FS_FORCE_PROMPT") && (!isatty(0) || !isatty(1)))
445 return;
446
447 puts(prompt);
448 proceed_question(5);
449 }
450
request_dir_fsck_afterwards(ext2_filsys fs)451 static void request_dir_fsck_afterwards(ext2_filsys fs)
452 {
453 static int requested;
454
455 if (requested++)
456 return;
457 fsck_requested++;
458 fs->super->s_state &= ~EXT2_VALID_FS;
459 puts(_(fsck_explain));
460 puts(_(please_dir_fsck));
461 if (mount_flags & EXT2_MF_READONLY)
462 printf("%s", _("(and reboot afterwards!)\n"));
463 }
464
request_fsck_afterwards(ext2_filsys fs)465 static void request_fsck_afterwards(ext2_filsys fs)
466 {
467 static int requested = 0;
468
469 if (requested++)
470 return;
471 fsck_requested++;
472 fs->super->s_state &= ~EXT2_VALID_FS;
473 printf("\n%s\n", _(please_fsck));
474 if (mount_flags & EXT2_MF_READONLY)
475 printf("%s", _("(and reboot afterwards!)\n"));
476 }
477
convert_64bit(ext2_filsys fs,int direction)478 static void convert_64bit(ext2_filsys fs, int direction)
479 {
480 /*
481 * Is resize2fs going to demand a fsck run? Might as well tell the
482 * user now.
483 */
484 if (!fsck_requested &&
485 ((fs->super->s_state & EXT2_ERROR_FS) ||
486 !(fs->super->s_state & EXT2_VALID_FS) ||
487 fs->super->s_lastcheck < fs->super->s_mtime))
488 request_fsck_afterwards(fs);
489 if (fsck_requested)
490 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
491 direction > 0 ? "-b" : "-s", fs->device_name);
492 else
493 fprintf(stderr, _("Please run `resize2fs %s %s"),
494 direction > 0 ? "-b" : "-s", fs->device_name);
495
496 if (undo_file)
497 fprintf(stderr, _(" -z \"%s\""), undo_file);
498 if (direction > 0)
499 fprintf(stderr, _("' to enable 64-bit mode.\n"));
500 else
501 fprintf(stderr, _("' to disable 64-bit mode.\n"));
502 }
503
504 /*
505 * Rewrite directory blocks with checksums
506 */
507 struct rewrite_dir_context {
508 char *buf;
509 errcode_t errcode;
510 ext2_ino_t dir;
511 int is_htree;
512 };
513
rewrite_dir_block(ext2_filsys fs,blk64_t * blocknr,e2_blkcnt_t blockcnt EXT2FS_ATTR ((unused)),blk64_t ref_block EXT2FS_ATTR ((unused)),int ref_offset EXT2FS_ATTR ((unused)),void * priv_data)514 static int rewrite_dir_block(ext2_filsys fs,
515 blk64_t *blocknr,
516 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
517 blk64_t ref_block EXT2FS_ATTR((unused)),
518 int ref_offset EXT2FS_ATTR((unused)),
519 void *priv_data)
520 {
521 struct ext2_dx_countlimit *dcl = NULL;
522 struct rewrite_dir_context *ctx = priv_data;
523 int dcl_offset, changed = 0;
524
525 ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
526 ctx->dir);
527 if (ctx->errcode)
528 return BLOCK_ABORT;
529
530 /* if htree node... */
531 if (ctx->is_htree)
532 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
533 &dcl, &dcl_offset);
534 if (dcl) {
535 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
536 /* Ensure limit is the max size */
537 int max_entries = (fs->blocksize - dcl_offset) /
538 sizeof(struct ext2_dx_entry);
539 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
540 changed = 1;
541 dcl->limit = ext2fs_cpu_to_le16(max_entries);
542 }
543 } else {
544 /* If htree block is full then rebuild the dir */
545 if (ext2fs_le16_to_cpu(dcl->count) ==
546 ext2fs_le16_to_cpu(dcl->limit)) {
547 request_dir_fsck_afterwards(fs);
548 return 0;
549 }
550 /*
551 * Ensure dcl->limit is small enough to leave room for
552 * the checksum tail.
553 */
554 int max_entries = (fs->blocksize - (dcl_offset +
555 sizeof(struct ext2_dx_tail))) /
556 sizeof(struct ext2_dx_entry);
557 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
558 dcl->limit = ext2fs_cpu_to_le16(max_entries);
559 /* Always rewrite checksum */
560 changed = 1;
561 }
562 } else {
563 unsigned int rec_len, name_size;
564 char *top = ctx->buf + fs->blocksize;
565 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
566 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
567
568 /* Find last and penultimate dirent */
569 while ((char *)de < top) {
570 penultimate_de = last_de;
571 last_de = de;
572 ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
573 if (!ctx->errcode && !rec_len)
574 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
575 if (ctx->errcode)
576 return BLOCK_ABORT;
577 de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
578 }
579 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
580 if (ctx->errcode)
581 return BLOCK_ABORT;
582 name_size = ext2fs_dirent_name_len(last_de);
583
584 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
585 if (!penultimate_de)
586 return 0;
587 if (last_de->inode ||
588 name_size ||
589 rec_len != sizeof(struct ext2_dir_entry_tail))
590 return 0;
591 /*
592 * The last dirent is unused and the right length to
593 * have stored a checksum. Erase it.
594 */
595 ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
596 &rec_len);
597 if (!rec_len)
598 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
599 if (ctx->errcode)
600 return BLOCK_ABORT;
601 ext2fs_set_rec_len(fs, rec_len +
602 sizeof(struct ext2_dir_entry_tail),
603 penultimate_de);
604 changed = 1;
605 } else {
606 unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
607 struct ext2_dir_entry_tail *t;
608
609 /*
610 * If the last dirent looks like the tail, just update
611 * the checksum.
612 */
613 if (!last_de->inode &&
614 rec_len == csum_size) {
615 t = (struct ext2_dir_entry_tail *)last_de;
616 t->det_reserved_name_len =
617 EXT2_DIR_NAME_LEN_CSUM;
618 changed = 1;
619 goto out;
620 }
621 if (name_size & 3)
622 name_size = (name_size & ~3) + 4;
623 /* If there's not enough space for the tail, e2fsck */
624 if (rec_len <= (8 + name_size + csum_size)) {
625 request_dir_fsck_afterwards(fs);
626 return 0;
627 }
628 /* Shorten that last de and insert the tail */
629 ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
630 t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
631 ext2fs_initialize_dirent_tail(fs, t);
632
633 /* Always update checksum */
634 changed = 1;
635 }
636 }
637
638 out:
639 if (!changed)
640 return 0;
641
642 ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
643 0, ctx->dir);
644 if (ctx->errcode)
645 return BLOCK_ABORT;
646
647 return 0;
648 }
649
rewrite_directory(ext2_filsys fs,ext2_ino_t dir,struct ext2_inode * inode)650 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
651 struct ext2_inode *inode)
652 {
653 errcode_t retval;
654 struct rewrite_dir_context ctx;
655
656 retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
657 if (retval)
658 return retval;
659
660 ctx.is_htree = (inode->i_flags & EXT2_INDEX_FL);
661 ctx.dir = dir;
662 ctx.errcode = 0;
663 retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
664 BLOCK_FLAG_DATA_ONLY,
665 0, rewrite_dir_block, &ctx);
666
667 ext2fs_free_mem(&ctx.buf);
668 if (retval)
669 return retval;
670
671 return ctx.errcode;
672 }
673
674 /*
675 * Context information that does not change across rewrite_one_inode()
676 * invocations.
677 */
678 struct rewrite_context {
679 ext2_filsys fs;
680 struct ext2_inode *zero_inode;
681 char *ea_buf;
682 int inode_size;
683 };
684
685 #define fatal_err(code, args...) \
686 do { \
687 com_err(__func__, code, args); \
688 exit(1); \
689 } while (0);
690
update_ea_inode_hash(struct rewrite_context * ctx,ext2_ino_t ino,struct ext2_inode * inode)691 static void update_ea_inode_hash(struct rewrite_context *ctx, ext2_ino_t ino,
692 struct ext2_inode *inode)
693 {
694 errcode_t retval;
695 ext2_file_t file;
696 __u32 hash;
697
698 retval = ext2fs_file_open(ctx->fs, ino, 0, &file);
699 if (retval)
700 fatal_err(retval, "open ea_inode");
701 retval = ext2fs_file_read(file, ctx->ea_buf, inode->i_size,
702 NULL);
703 if (retval)
704 fatal_err(retval, "read ea_inode");
705 retval = ext2fs_file_close(file);
706 if (retval)
707 fatal_err(retval, "close ea_inode");
708
709 hash = ext2fs_crc32c_le(ctx->fs->csum_seed,
710 (unsigned char *) ctx->ea_buf, inode->i_size);
711 ext2fs_set_ea_inode_hash(inode, hash);
712 }
713
update_xattr_entry_hashes(ext2_filsys fs,struct ext2_ext_attr_entry * entry,struct ext2_ext_attr_entry * end)714 static int update_xattr_entry_hashes(ext2_filsys fs,
715 struct ext2_ext_attr_entry *entry,
716 struct ext2_ext_attr_entry *end)
717 {
718 int modified = 0;
719 errcode_t retval;
720
721 while (entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry)) {
722 if (entry->e_value_inum) {
723 retval = ext2fs_ext_attr_hash_entry2(fs, entry, NULL,
724 &entry->e_hash);
725 if (retval)
726 fatal_err(retval, "hash ea_inode entry");
727 modified = 1;
728 }
729 entry = EXT2_EXT_ATTR_NEXT(entry);
730 }
731 return modified;
732 }
733
update_inline_xattr_hashes(struct rewrite_context * ctx,struct ext2_inode_large * inode)734 static void update_inline_xattr_hashes(struct rewrite_context *ctx,
735 struct ext2_inode_large *inode)
736 {
737 struct ext2_ext_attr_entry *start, *end;
738 __u32 *ea_magic;
739
740 if (inode->i_extra_isize == 0)
741 return;
742
743 if (inode->i_extra_isize & 3 ||
744 inode->i_extra_isize > ctx->inode_size - EXT2_GOOD_OLD_INODE_SIZE)
745 fatal_err(EXT2_ET_INODE_CORRUPTED, "bad i_extra_isize")
746
747 ea_magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
748 inode->i_extra_isize);
749 if (*ea_magic != EXT2_EXT_ATTR_MAGIC)
750 return;
751
752 start = (struct ext2_ext_attr_entry *)(ea_magic + 1);
753 end = (struct ext2_ext_attr_entry *)((char *)inode + ctx->inode_size);
754
755 update_xattr_entry_hashes(ctx->fs, start, end);
756 }
757
update_block_xattr_hashes(struct rewrite_context * ctx,char * block_buf)758 static void update_block_xattr_hashes(struct rewrite_context *ctx,
759 char *block_buf)
760 {
761 struct ext2_ext_attr_header *header;
762 struct ext2_ext_attr_entry *start, *end;
763
764 header = (struct ext2_ext_attr_header *)block_buf;
765 if (header->h_magic != EXT2_EXT_ATTR_MAGIC)
766 return;
767
768 start = (struct ext2_ext_attr_entry *)(header+1);
769 end = (struct ext2_ext_attr_entry *)(block_buf + ctx->fs->blocksize);
770
771 if (update_xattr_entry_hashes(ctx->fs, start, end))
772 ext2fs_ext_attr_block_rehash(header, end);
773 }
774
rewrite_one_inode(struct rewrite_context * ctx,ext2_ino_t ino,struct ext2_inode * inode)775 static void rewrite_one_inode(struct rewrite_context *ctx, ext2_ino_t ino,
776 struct ext2_inode *inode)
777 {
778 blk64_t file_acl_block;
779 errcode_t retval;
780
781 if (!ext2fs_test_inode_bitmap2(ctx->fs->inode_map, ino)) {
782 if (!memcmp(inode, ctx->zero_inode, ctx->inode_size))
783 return;
784 memset(inode, 0, ctx->inode_size);
785 }
786
787 if (inode->i_flags & EXT4_EA_INODE_FL)
788 update_ea_inode_hash(ctx, ino, inode);
789
790 if (ctx->inode_size != EXT2_GOOD_OLD_INODE_SIZE)
791 update_inline_xattr_hashes(ctx,
792 (struct ext2_inode_large *)inode);
793
794 retval = ext2fs_write_inode_full(ctx->fs, ino, inode, ctx->inode_size);
795 if (retval)
796 fatal_err(retval, "while writing inode");
797
798 retval = ext2fs_fix_extents_checksums(ctx->fs, ino, inode);
799 if (retval)
800 fatal_err(retval, "while rewriting extents");
801
802 if (LINUX_S_ISDIR(inode->i_mode) &&
803 ext2fs_inode_has_valid_blocks2(ctx->fs, inode)) {
804 retval = rewrite_directory(ctx->fs, ino, inode);
805 if (retval)
806 fatal_err(retval, "while rewriting directories");
807 }
808
809 file_acl_block = ext2fs_file_acl_block(ctx->fs, inode);
810 if (!file_acl_block)
811 return;
812
813 retval = ext2fs_read_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
814 ino);
815 if (retval)
816 fatal_err(retval, "while rewriting extended attribute");
817
818 update_block_xattr_hashes(ctx, ctx->ea_buf);
819 retval = ext2fs_write_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
820 ino);
821 if (retval)
822 fatal_err(retval, "while rewriting extended attribute");
823 }
824
825 /*
826 * Forcibly set checksums in all inodes.
827 */
rewrite_inodes(ext2_filsys fs)828 static void rewrite_inodes(ext2_filsys fs)
829 {
830 ext2_inode_scan scan;
831 errcode_t retval;
832 ext2_ino_t ino;
833 struct ext2_inode *inode;
834 int pass;
835 struct rewrite_context ctx = {
836 .fs = fs,
837 .inode_size = EXT2_INODE_SIZE(fs->super),
838 };
839
840 if (fs->super->s_creator_os == EXT2_OS_HURD)
841 return;
842
843 retval = ext2fs_get_mem(ctx.inode_size, &inode);
844 if (retval)
845 fatal_err(retval, "while allocating memory");
846
847 retval = ext2fs_get_memzero(ctx.inode_size, &ctx.zero_inode);
848 if (retval)
849 fatal_err(retval, "while allocating memory");
850
851 retval = ext2fs_get_mem(64 * 1024, &ctx.ea_buf);
852 if (retval)
853 fatal_err(retval, "while allocating memory");
854
855 /*
856 * Extended attribute inodes have a lookup hash that needs to be
857 * recalculated with the new csum_seed. Other inodes referencing xattr
858 * inodes need this value to be up to date. That's why we do two passes:
859 *
860 * pass 1: update xattr inodes to update their lookup hash as well as
861 * other checksums.
862 *
863 * pass 2: go over other inodes to update their checksums.
864 */
865 if (ext2fs_has_feature_ea_inode(fs->super))
866 pass = 1;
867 else
868 pass = 2;
869 for (;pass <= 2; pass++) {
870 retval = ext2fs_open_inode_scan(fs, 0, &scan);
871 if (retval)
872 fatal_err(retval, "while opening inode scan");
873
874 do {
875 retval = ext2fs_get_next_inode_full(scan, &ino, inode,
876 ctx.inode_size);
877 if (retval)
878 fatal_err(retval, "while getting next inode");
879 if (!ino)
880 break;
881
882 if (((pass == 1) &&
883 (inode->i_flags & EXT4_EA_INODE_FL)) ||
884 ((pass == 2) &&
885 !(inode->i_flags & EXT4_EA_INODE_FL)))
886 rewrite_one_inode(&ctx, ino, inode);
887 } while (ino);
888
889 ext2fs_close_inode_scan(scan);
890 }
891
892 ext2fs_free_mem(&ctx.zero_inode);
893 ext2fs_free_mem(&ctx.ea_buf);
894 ext2fs_free_mem(&inode);
895 }
896
rewrite_metadata_checksums(ext2_filsys fs)897 static void rewrite_metadata_checksums(ext2_filsys fs)
898 {
899 errcode_t retval;
900 dgrp_t i;
901
902 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
903 ext2fs_init_csum_seed(fs);
904 for (i = 0; i < fs->group_desc_count; i++)
905 ext2fs_group_desc_csum_set(fs, i);
906 retval = ext2fs_read_bitmaps(fs);
907 if (retval)
908 fatal_err(retval, "while reading bitmaps");
909 rewrite_inodes(fs);
910 ext2fs_mark_ib_dirty(fs);
911 ext2fs_mark_bb_dirty(fs);
912 ext2fs_mmp_update2(fs, 1);
913 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
914 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
915 if (ext2fs_has_feature_metadata_csum(fs->super))
916 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
917 else
918 fs->super->s_checksum_type = 0;
919 ext2fs_mark_super_dirty(fs);
920 }
921
enable_uninit_bg(ext2_filsys fs)922 static void enable_uninit_bg(ext2_filsys fs)
923 {
924 struct ext2_group_desc *gd;
925 dgrp_t i;
926
927 for (i = 0; i < fs->group_desc_count; i++) {
928 gd = ext2fs_group_desc(fs, fs->group_desc, i);
929 gd->bg_itable_unused = 0;
930 gd->bg_flags = EXT2_BG_INODE_ZEROED;
931 ext2fs_group_desc_csum_set(fs, i);
932 }
933 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
934 }
935
zero_empty_inodes(ext2_filsys fs)936 static errcode_t zero_empty_inodes(ext2_filsys fs)
937 {
938 int length = EXT2_INODE_SIZE(fs->super);
939 struct ext2_inode *inode = NULL;
940 ext2_inode_scan scan;
941 errcode_t retval;
942 ext2_ino_t ino;
943
944 retval = ext2fs_open_inode_scan(fs, 0, &scan);
945 if (retval)
946 goto out;
947
948 retval = ext2fs_get_mem(length, &inode);
949 if (retval)
950 goto out;
951
952 do {
953 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
954 if (retval)
955 goto out;
956 if (!ino)
957 break;
958 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
959 memset(inode, 0, length);
960 retval = ext2fs_write_inode_full(fs, ino, inode,
961 length);
962 if (retval)
963 goto out;
964 }
965 } while (1);
966
967 out:
968 ext2fs_free_mem(&inode);
969 ext2fs_close_inode_scan(scan);
970 return retval;
971 }
972
disable_uninit_bg(ext2_filsys fs,__u32 csum_feature_flag)973 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
974 {
975 struct ext2_group_desc *gd;
976 dgrp_t i;
977 errcode_t retval;
978 blk64_t b, c, d;
979
980 /* Load bitmaps to ensure that the uninit ones get written out */
981 fs->super->s_feature_ro_compat |= csum_feature_flag;
982 retval = ext2fs_read_bitmaps(fs);
983 fs->super->s_feature_ro_compat &= ~csum_feature_flag;
984 if (retval) {
985 com_err("disable_uninit_bg", retval,
986 "while reading bitmaps");
987 request_fsck_afterwards(fs);
988 return retval;
989 }
990 ext2fs_mark_ib_dirty(fs);
991 ext2fs_mark_bb_dirty(fs);
992
993 /* If we're only turning off uninit_bg, zero the inodes */
994 if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
995 retval = zero_empty_inodes(fs);
996 if (retval) {
997 com_err("disable_uninit_bg", retval,
998 "while zeroing unused inodes");
999 request_fsck_afterwards(fs);
1000 return retval;
1001 }
1002 }
1003
1004 /* The bbitmap is zeroed; we must mark group metadata blocks in use */
1005 for (i = 0; i < fs->group_desc_count; i++) {
1006 b = ext2fs_block_bitmap_loc(fs, i);
1007 ext2fs_mark_block_bitmap2(fs->block_map, b);
1008 b = ext2fs_inode_bitmap_loc(fs, i);
1009 ext2fs_mark_block_bitmap2(fs->block_map, b);
1010
1011 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
1012 if (retval == 0 && b)
1013 ext2fs_mark_block_bitmap2(fs->block_map, b);
1014 if (retval == 0 && c)
1015 ext2fs_mark_block_bitmap2(fs->block_map, c);
1016 if (retval == 0 && d)
1017 ext2fs_mark_block_bitmap2(fs->block_map, d);
1018 if (retval) {
1019 com_err("disable_uninit_bg", retval,
1020 "while initializing block bitmaps");
1021 request_fsck_afterwards(fs);
1022 }
1023
1024 gd = ext2fs_group_desc(fs, fs->group_desc, i);
1025 gd->bg_itable_unused = 0;
1026 gd->bg_flags = 0;
1027 ext2fs_group_desc_csum_set(fs, i);
1028 }
1029 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1030 ext2fs_mark_super_dirty(fs);
1031
1032 return 0;
1033 }
1034
1035 static void
try_confirm_csum_seed_support(void)1036 try_confirm_csum_seed_support(void)
1037 {
1038 if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK))
1039 fputs(_("WARNING: Could not confirm kernel support for "
1040 "metadata_csum_seed.\n This requires Linux >= "
1041 "v4.4.\n"), stderr);
1042 }
1043
1044 /*
1045 * Update the feature set as provided by the user.
1046 */
update_feature_set(ext2_filsys fs,char * features)1047 static int update_feature_set(ext2_filsys fs, char *features)
1048 {
1049 struct ext2_super_block *sb = fs->super;
1050 __u32 old_features[3];
1051 int type_err;
1052 unsigned int mask_err;
1053 errcode_t err;
1054 enum quota_type qtype;
1055
1056 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
1057 ((&sb->s_feature_compat)[(type)] & (mask)))
1058 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
1059 !((&sb->s_feature_compat)[(type)] & (mask)))
1060 #define FEATURE_CHANGED(type, mask) ((mask) & \
1061 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
1062
1063 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
1064 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
1065 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
1066
1067 if (e2p_edit_feature2(features, &sb->s_feature_compat,
1068 ok_features, clear_ok_features,
1069 &type_err, &mask_err)) {
1070 if (!mask_err)
1071 fprintf(stderr,
1072 _("Invalid filesystem option set: %s\n"),
1073 features);
1074 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
1075 fprintf(stderr, _("Clearing filesystem feature '%s' "
1076 "not supported.\n"),
1077 e2p_feature2string(type_err &
1078 E2P_FEATURE_TYPE_MASK,
1079 mask_err));
1080 else
1081 fprintf(stderr, _("Setting filesystem feature '%s' "
1082 "not supported.\n"),
1083 e2p_feature2string(type_err, mask_err));
1084 return 1;
1085 }
1086
1087 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1088 if ((mount_flags & EXT2_MF_MOUNTED) &&
1089 !(mount_flags & EXT2_MF_READONLY)) {
1090 fputs(_("The has_journal feature may only be "
1091 "cleared when the filesystem is\n"
1092 "unmounted or mounted "
1093 "read-only.\n"), stderr);
1094 return 1;
1095 }
1096 if (ext2fs_has_feature_journal_needs_recovery(sb) &&
1097 f_flag < 2) {
1098 fputs(_("The needs_recovery flag is set. "
1099 "Please run e2fsck before clearing\n"
1100 "the has_journal flag.\n"), stderr);
1101 return 1;
1102 }
1103 if (sb->s_journal_inum) {
1104 if (remove_journal_inode(fs))
1105 return 1;
1106 }
1107 if (sb->s_journal_dev) {
1108 if (remove_journal_device(fs))
1109 return 1;
1110 }
1111 }
1112
1113 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1114 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1115 if (ext2fs_has_feature_meta_bg(sb)) {
1116 fputs(_("Setting filesystem feature 'sparse_super' "
1117 "not supported\nfor filesystems with "
1118 "the meta_bg feature enabled.\n"),
1119 stderr);
1120 return 1;
1121 }
1122 }
1123
1124 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1125 int error;
1126
1127 if ((mount_flags & EXT2_MF_MOUNTED) ||
1128 (mount_flags & EXT2_MF_READONLY)) {
1129 fputs(_("The multiple mount protection feature can't\n"
1130 "be set if the filesystem is mounted or\n"
1131 "read-only.\n"), stderr);
1132 return 1;
1133 }
1134
1135 error = ext2fs_mmp_init(fs);
1136 if (error) {
1137 fputs(_("\nError while enabling multiple mount "
1138 "protection feature."), stderr);
1139 return 1;
1140 }
1141
1142 /*
1143 * We want to update group desc with the new free blocks count
1144 */
1145 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1146
1147 printf(_("Multiple mount protection has been enabled "
1148 "with update interval %ds.\n"),
1149 sb->s_mmp_update_interval);
1150 }
1151
1152 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1153 int error;
1154
1155 if (mount_flags & EXT2_MF_READONLY) {
1156 fputs(_("The multiple mount protection feature cannot\n"
1157 "be disabled if the filesystem is readonly.\n"),
1158 stderr);
1159 return 1;
1160 }
1161
1162 error = ext2fs_read_bitmaps(fs);
1163 if (error) {
1164 fputs(_("Error while reading bitmaps\n"), stderr);
1165 return 1;
1166 }
1167
1168 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1169 if (error) {
1170 struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1171
1172 if (error == EXT2_ET_MMP_MAGIC_INVALID)
1173 printf(_("Magic number in MMP block does not "
1174 "match. expected: %x, actual: %x\n"),
1175 EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1176 else
1177 com_err(program_name, error, "%s",
1178 _("while reading MMP block."));
1179 goto mmp_error;
1180 }
1181
1182 /* We need to force out the group descriptors as well */
1183 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1184 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1185 mmp_error:
1186 sb->s_mmp_block = 0;
1187 sb->s_mmp_update_interval = 0;
1188 }
1189
1190 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1191 /*
1192 * If adding a journal flag, let the create journal
1193 * code below handle setting the flag and creating the
1194 * journal. We supply a default size if necessary.
1195 */
1196 if (!journal_size)
1197 journal_size = -1;
1198 ext2fs_clear_feature_journal(sb);
1199 }
1200
1201 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1202 if (!sb->s_def_hash_version)
1203 sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1204 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1205 uuid_generate((unsigned char *) sb->s_hash_seed);
1206 }
1207
1208 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1209 if (ext2fs_check_desc(fs)) {
1210 fputs(_("Clearing the flex_bg flag would "
1211 "cause the the filesystem to be\n"
1212 "inconsistent.\n"), stderr);
1213 return 1;
1214 }
1215 }
1216
1217 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1218 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1219 if ((mount_flags & EXT2_MF_MOUNTED) &&
1220 !(mount_flags & EXT2_MF_READONLY)) {
1221 fputs(_("The huge_file feature may only be "
1222 "cleared when the filesystem is\n"
1223 "unmounted or mounted "
1224 "read-only.\n"), stderr);
1225 return 1;
1226 }
1227 }
1228
1229 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1230 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1231 check_fsck_needed(fs,
1232 _("Enabling checksums could take some time."));
1233 if (mount_flags & EXT2_MF_MOUNTED) {
1234 fputs(_("Cannot enable metadata_csum on a mounted "
1235 "filesystem!\n"), stderr);
1236 exit(1);
1237 }
1238 if (!ext2fs_has_feature_extents(fs->super))
1239 printf("%s",
1240 _("Extents are not enabled. The file extent "
1241 "tree can be checksummed, whereas block maps "
1242 "cannot. Not enabling extents reduces the "
1243 "coverage of metadata checksumming. "
1244 "Re-run with -O extent to rectify.\n"));
1245 if (!ext2fs_has_feature_64bit(fs->super))
1246 printf("%s",
1247 _("64-bit filesystem support is not enabled. "
1248 "The larger fields afforded by this feature "
1249 "enable full-strength checksumming. "
1250 "Run resize2fs -b to rectify.\n"));
1251 rewrite_checksums = 1;
1252 /* metadata_csum supersedes uninit_bg */
1253 ext2fs_clear_feature_gdt_csum(fs->super);
1254
1255 /* if uninit_bg was previously off, rewrite group desc */
1256 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1257 EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1258 enable_uninit_bg(fs);
1259
1260 /*
1261 * Since metadata_csum supersedes uninit_bg, pretend like
1262 * uninit_bg has been off all along.
1263 */
1264 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1265 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1266 }
1267
1268 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1269 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1270 __u32 test_features[3];
1271
1272 check_fsck_needed(fs,
1273 _("Disabling checksums could take some time."));
1274 if (mount_flags & EXT2_MF_MOUNTED) {
1275 fputs(_("Cannot disable metadata_csum on a mounted "
1276 "filesystem!\n"), stderr);
1277 exit(1);
1278 }
1279 rewrite_checksums = 1;
1280
1281 /* Enable uninit_bg unless the user expressly turned it off */
1282 memcpy(test_features, old_features, sizeof(test_features));
1283 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1284 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1285 e2p_edit_feature2(features, test_features, ok_features,
1286 clear_ok_features, NULL, NULL);
1287 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1288 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1289 ext2fs_set_feature_gdt_csum(fs->super);
1290
1291 /*
1292 * If we're turning off metadata_csum and not turning on
1293 * uninit_bg, rewrite group desc.
1294 */
1295 if (!ext2fs_has_feature_gdt_csum(fs->super)) {
1296 err = disable_uninit_bg(fs,
1297 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1298 if (err)
1299 return 1;
1300 } else
1301 /*
1302 * metadata_csum previously provided uninit_bg, so if
1303 * we're also setting the uninit_bg feature bit,
1304 * pretend like it was previously enabled. Checksums
1305 * will be rewritten with crc16 later.
1306 */
1307 old_features[E2P_FEATURE_RO_INCOMPAT] |=
1308 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1309 fs->super->s_checksum_seed = 0;
1310 ext2fs_clear_feature_csum_seed(fs->super);
1311 }
1312
1313 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1314 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1315 /* Do not enable uninit_bg when metadata_csum enabled */
1316 if (ext2fs_has_feature_metadata_csum(fs->super))
1317 ext2fs_clear_feature_gdt_csum(fs->super);
1318 else
1319 enable_uninit_bg(fs);
1320 }
1321
1322 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1323 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1324 err = disable_uninit_bg(fs,
1325 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1326 if (err)
1327 return 1;
1328 }
1329
1330 /*
1331 * We don't actually toggle 64bit; resize2fs does that. But this
1332 * must come after the metadata_csum feature_on so that it won't
1333 * complain about the lack of 64bit.
1334 */
1335 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1336 EXT4_FEATURE_INCOMPAT_64BIT)) {
1337 if (mount_flags & EXT2_MF_MOUNTED) {
1338 fprintf(stderr, _("Cannot enable 64-bit mode "
1339 "while mounted!\n"));
1340 exit(1);
1341 }
1342 ext2fs_clear_feature_64bit(sb);
1343 feature_64bit = 1;
1344 }
1345 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1346 EXT4_FEATURE_INCOMPAT_64BIT)) {
1347 if (mount_flags & EXT2_MF_MOUNTED) {
1348 fprintf(stderr, _("Cannot disable 64-bit mode "
1349 "while mounted!\n"));
1350 exit(1);
1351 }
1352 ext2fs_set_feature_64bit(sb);
1353 feature_64bit = -1;
1354 }
1355
1356 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1357 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1358 /*
1359 * Set the Q_flag here and handle the quota options in the code
1360 * below.
1361 */
1362 if (!Q_flag) {
1363 Q_flag = 1;
1364 /* Enable usr/grp quota by default */
1365 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1366 if (qtype != PRJQUOTA)
1367 quota_enable[qtype] = QOPT_ENABLE;
1368 else
1369 quota_enable[qtype] = QOPT_DISABLE;
1370 }
1371 }
1372 ext2fs_clear_feature_quota(sb);
1373 }
1374
1375 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1376 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1377 if (fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1378 fprintf(stderr, _("Cannot enable project feature; "
1379 "inode size too small.\n"));
1380 exit(1);
1381 }
1382 Q_flag = 1;
1383 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1384 }
1385
1386 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1387 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1388 Q_flag = 1;
1389 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1390 }
1391
1392 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1393 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1394 /*
1395 * Set the Q_flag here and handle the quota options in the code
1396 * below.
1397 */
1398 if (Q_flag)
1399 fputs(_("\nWarning: '^quota' option overrides '-Q'"
1400 "arguments.\n"), stderr);
1401 Q_flag = 1;
1402 /* Disable all quota by default */
1403 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1404 quota_enable[qtype] = QOPT_DISABLE;
1405 }
1406
1407 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1408 fs->super->s_encrypt_algos[0] =
1409 EXT4_ENCRYPTION_MODE_AES_256_XTS;
1410 fs->super->s_encrypt_algos[1] =
1411 EXT4_ENCRYPTION_MODE_AES_256_CTS;
1412 }
1413
1414 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_CASEFOLD)) {
1415 if (mount_flags & EXT2_MF_MOUNTED) {
1416 fputs(_("The casefold feature may only be enabled when "
1417 "the filesystem is unmounted.\n"), stderr);
1418 return 1;
1419 }
1420 fs->super->s_encoding = EXT4_ENC_UTF8_12_1;
1421 fs->super->s_encoding_flags = e2p_get_encoding_flags(EXT4_ENC_UTF8_12_1);
1422 enabling_casefold = 1;
1423 }
1424
1425 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1426 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1427 if (!ext2fs_has_feature_metadata_csum(sb)) {
1428 fputs(_("Setting feature 'metadata_csum_seed' "
1429 "is only supported\non filesystems with "
1430 "the metadata_csum feature enabled.\n"),
1431 stderr);
1432 return 1;
1433 }
1434 try_confirm_csum_seed_support();
1435 fs->super->s_checksum_seed = fs->csum_seed;
1436 }
1437
1438 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1439 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1440 __le32 uuid_seed;
1441
1442 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1443 sizeof(fs->super->s_uuid));
1444 if (fs->super->s_checksum_seed != uuid_seed) {
1445 if (mount_flags & (EXT2_MF_BUSY|EXT2_MF_MOUNTED)) {
1446 fputs(_("UUID has changed since enabling "
1447 "metadata_csum. Filesystem must be unmounted "
1448 "\nto safely rewrite all metadata to match the new UUID.\n"),
1449 stderr);
1450 return 1;
1451 }
1452 check_fsck_needed(fs, _("Recalculating checksums "
1453 "could take some time."));
1454 rewrite_checksums = 1;
1455 }
1456 }
1457
1458 if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1459 (sb->s_feature_compat || sb->s_feature_ro_compat ||
1460 sb->s_feature_incompat))
1461 ext2fs_update_dynamic_rev(fs);
1462
1463 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1464 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1465 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1466 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1467 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1468 EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1469 FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1470 EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1471 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1472 EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1473 request_fsck_afterwards(fs);
1474
1475 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1476 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1477 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1478 ext2fs_mark_super_dirty(fs);
1479
1480 return 0;
1481 }
1482
1483 /*
1484 * Add a journal to the filesystem.
1485 */
add_journal(ext2_filsys fs)1486 static int add_journal(ext2_filsys fs)
1487 {
1488 unsigned long journal_blocks;
1489 errcode_t retval;
1490 ext2_filsys jfs;
1491 io_manager io_ptr;
1492
1493 if (ext2fs_has_feature_journal(fs->super)) {
1494 fputs(_("The filesystem already has a journal.\n"), stderr);
1495 goto err;
1496 }
1497 if (journal_device) {
1498 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1499 NULL))
1500 proceed_question(-1);
1501 check_mount(journal_device, 0, _("journal"));
1502 #ifdef CONFIG_TESTIO_DEBUG
1503 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1504 io_ptr = test_io_manager;
1505 test_io_backing_manager = unix_io_manager;
1506 } else
1507 #endif
1508 io_ptr = unix_io_manager;
1509 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1510 EXT2_FLAG_JOURNAL_DEV_OK, 0,
1511 fs->blocksize, io_ptr, &jfs);
1512 if (retval) {
1513 com_err(program_name, retval,
1514 _("\n\twhile trying to open journal on %s\n"),
1515 journal_device);
1516 goto err;
1517 }
1518 printf(_("Creating journal on device %s: "),
1519 journal_device);
1520 fflush(stdout);
1521
1522 retval = ext2fs_add_journal_device(fs, jfs);
1523 ext2fs_close_free(&jfs);
1524 if (retval) {
1525 com_err(program_name, retval,
1526 _("while adding filesystem to journal on %s"),
1527 journal_device);
1528 goto err;
1529 }
1530 fputs(_("done\n"), stdout);
1531 } else if (journal_size) {
1532 fputs(_("Creating journal inode: "), stdout);
1533 fflush(stdout);
1534 journal_blocks = figure_journal_size(journal_size, fs);
1535
1536 if (journal_location_string)
1537 journal_location =
1538 parse_num_blocks2(journal_location_string,
1539 fs->super->s_log_block_size);
1540 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
1541 journal_location,
1542 journal_flags);
1543 if (retval) {
1544 fprintf(stderr, "\n");
1545 com_err(program_name, retval, "%s",
1546 _("\n\twhile trying to create journal file"));
1547 return retval;
1548 } else
1549 fputs(_("done\n"), stdout);
1550 /*
1551 * If the filesystem wasn't mounted, we need to force
1552 * the block group descriptors out.
1553 */
1554 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1555 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1556 }
1557 print_check_message(fs->super->s_max_mnt_count,
1558 fs->super->s_checkinterval);
1559 return 0;
1560
1561 err:
1562 free(journal_device);
1563 return 1;
1564 }
1565
handle_quota_options(ext2_filsys fs)1566 static void handle_quota_options(ext2_filsys fs)
1567 {
1568 errcode_t retval;
1569 quota_ctx_t qctx;
1570 ext2_ino_t qf_ino;
1571 enum quota_type qtype;
1572 unsigned int qtype_bits = 0;
1573 int need_dirty = 0;
1574
1575 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1576 if (quota_enable[qtype] != 0)
1577 break;
1578 if (qtype == MAXQUOTAS)
1579 /* Nothing to do. */
1580 return;
1581
1582 if (quota_enable[PRJQUOTA] == QOPT_ENABLE &&
1583 fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1584 fprintf(stderr, _("Cannot enable project quota; "
1585 "inode size too small.\n"));
1586 exit(1);
1587 }
1588
1589 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1590 if (quota_enable[qtype] == QOPT_ENABLE)
1591 qtype_bits |= 1 << qtype;
1592 }
1593
1594 retval = quota_init_context(&qctx, fs, qtype_bits);
1595 if (retval) {
1596 com_err(program_name, retval,
1597 _("while initializing quota context in support library"));
1598 exit(1);
1599 }
1600
1601 if (qtype_bits)
1602 quota_compute_usage(qctx);
1603
1604 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1605 if (quota_enable[qtype] == QOPT_ENABLE &&
1606 *quota_sb_inump(fs->super, qtype) == 0) {
1607 if ((qf_ino = quota_file_exists(fs, qtype)) > 0) {
1608 retval = quota_update_limits(qctx, qf_ino,
1609 qtype);
1610 if (retval) {
1611 com_err(program_name, retval,
1612 _("while updating quota limits (%d)"),
1613 qtype);
1614 exit(1);
1615 }
1616 }
1617 retval = quota_write_inode(qctx, 1 << qtype);
1618 if (retval) {
1619 com_err(program_name, retval,
1620 _("while writing quota file (%d)"),
1621 qtype);
1622 exit(1);
1623 }
1624 /* Enable Quota feature if one of quota enabled */
1625 if (!ext2fs_has_feature_quota(fs->super)) {
1626 ext2fs_set_feature_quota(fs->super);
1627 need_dirty = 1;
1628 }
1629 if (qtype == PRJQUOTA &&
1630 !ext2fs_has_feature_project(fs->super)) {
1631 ext2fs_set_feature_project(fs->super);
1632 need_dirty = 1;
1633 }
1634 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1635 retval = quota_remove_inode(fs, qtype);
1636 if (retval) {
1637 com_err(program_name, retval,
1638 _("while removing quota file (%d)"),
1639 qtype);
1640 exit(1);
1641 }
1642 if (qtype == PRJQUOTA) {
1643 ext2fs_clear_feature_project(fs->super);
1644 need_dirty = 1;
1645 }
1646 }
1647 }
1648
1649 quota_release_context(&qctx);
1650 /* Clear Quota feature if all quota types disabled. */
1651 if (!qtype_bits) {
1652 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1653 if (*quota_sb_inump(fs->super, qtype))
1654 break;
1655 if (qtype == MAXQUOTAS) {
1656 ext2fs_clear_feature_quota(fs->super);
1657 need_dirty = 1;
1658 }
1659
1660 }
1661 if (need_dirty)
1662 ext2fs_mark_super_dirty(fs);
1663 return;
1664 }
1665
option_handle_function(char * token)1666 static int option_handle_function(char *token)
1667 {
1668 if (strncmp(token, "usr", 3) == 0) {
1669 quota_enable[USRQUOTA] = QOPT_ENABLE;
1670 } else if (strncmp(token, "^usr", 4) == 0) {
1671 quota_enable[USRQUOTA] = QOPT_DISABLE;
1672 } else if (strncmp(token, "grp", 3) == 0) {
1673 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1674 } else if (strncmp(token, "^grp", 4) == 0) {
1675 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1676 } else if (strncmp(token, "prj", 3) == 0) {
1677 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1678 } else if (strncmp(token, "^prj", 4) == 0) {
1679 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1680 } else {
1681 fputs(_("\nBad quota options specified.\n\n"
1682 "Following valid quota options are available "
1683 "(pass by separating with comma):\n"
1684 "\t[^]usr[quota]\n"
1685 "\t[^]grp[quota]\n"
1686 "\t[^]prj[quota]\n"
1687 "\n\n"), stderr);
1688 return 1;
1689 }
1690 return 0;
1691 }
1692
parse_e2label_options(int argc,char ** argv)1693 static void parse_e2label_options(int argc, char ** argv)
1694 {
1695 if ((argc < 2) || (argc > 3)) {
1696 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1697 exit(1);
1698 }
1699 io_options = strchr(argv[1], '?');
1700 if (io_options)
1701 *io_options++ = 0;
1702 device_name = blkid_get_devname(NULL, argv[1], NULL);
1703 if (!device_name) {
1704 com_err("e2label", 0, _("Unable to resolve '%s'"),
1705 argv[1]);
1706 exit(1);
1707 }
1708 open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
1709 if (argc == 3) {
1710 open_flag |= EXT2_FLAG_RW;
1711 L_flag = 1;
1712 new_label = argv[2];
1713 } else
1714 print_label++;
1715 }
1716
parse_time(char * str)1717 static time_t parse_time(char *str)
1718 {
1719 struct tm ts;
1720
1721 if (strcmp(str, "now") == 0) {
1722 return (time(0));
1723 }
1724 memset(&ts, 0, sizeof(ts));
1725 #ifdef HAVE_STRPTIME
1726 strptime(str, "%Y%m%d%H%M%S", &ts);
1727 #else
1728 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1729 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1730 ts.tm_year -= 1900;
1731 ts.tm_mon -= 1;
1732 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1733 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1734 ts.tm_min > 59 || ts.tm_sec > 61)
1735 ts.tm_mday = 0;
1736 #endif
1737 if (ts.tm_mday == 0) {
1738 com_err(program_name, 0,
1739 _("Couldn't parse date/time specifier: %s"),
1740 str);
1741 usage();
1742 }
1743 ts.tm_isdst = -1;
1744 return (mktime(&ts));
1745 }
1746
parse_tune2fs_options(int argc,char ** argv)1747 static void parse_tune2fs_options(int argc, char **argv)
1748 {
1749 int c;
1750 char *tmp;
1751 struct group *gr;
1752 struct passwd *pw;
1753 int ret;
1754 char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1755
1756 open_flag = 0;
1757 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1758 while ((c = getopt(argc, argv, optstring)) != EOF)
1759 switch (c) {
1760 case 'c':
1761 max_mount_count = strtol(optarg, &tmp, 0);
1762 if (*tmp || max_mount_count > 16000) {
1763 com_err(program_name, 0,
1764 _("bad mounts count - %s"),
1765 optarg);
1766 usage();
1767 }
1768 if (max_mount_count == 0)
1769 max_mount_count = -1;
1770 c_flag = 1;
1771 open_flag = EXT2_FLAG_RW;
1772 break;
1773 case 'C':
1774 mount_count = strtoul(optarg, &tmp, 0);
1775 if (*tmp || mount_count > 16000) {
1776 com_err(program_name, 0,
1777 _("bad mounts count - %s"),
1778 optarg);
1779 usage();
1780 }
1781 C_flag = 1;
1782 open_flag = EXT2_FLAG_RW;
1783 break;
1784 case 'e':
1785 if (strcmp(optarg, "continue") == 0)
1786 errors = EXT2_ERRORS_CONTINUE;
1787 else if (strcmp(optarg, "remount-ro") == 0)
1788 errors = EXT2_ERRORS_RO;
1789 else if (strcmp(optarg, "panic") == 0)
1790 errors = EXT2_ERRORS_PANIC;
1791 else {
1792 com_err(program_name, 0,
1793 _("bad error behavior - %s"),
1794 optarg);
1795 usage();
1796 }
1797 e_flag = 1;
1798 open_flag = EXT2_FLAG_RW;
1799 break;
1800 case 'E':
1801 extended_cmd = optarg;
1802 open_flag |= EXT2_FLAG_RW;
1803 break;
1804 case 'f': /* Force */
1805 f_flag++;
1806 break;
1807 case 'g':
1808 resgid = strtoul(optarg, &tmp, 0);
1809 if (*tmp) {
1810 gr = getgrnam(optarg);
1811 if (gr == NULL)
1812 tmp = optarg;
1813 else {
1814 resgid = gr->gr_gid;
1815 *tmp = 0;
1816 }
1817 }
1818 if (*tmp) {
1819 com_err(program_name, 0,
1820 _("bad gid/group name - %s"),
1821 optarg);
1822 usage();
1823 }
1824 g_flag = 1;
1825 open_flag = EXT2_FLAG_RW;
1826 break;
1827 case 'i':
1828 interval = strtoul(optarg, &tmp, 0);
1829 switch (*tmp) {
1830 case 's':
1831 tmp++;
1832 break;
1833 case '\0':
1834 case 'd':
1835 case 'D': /* days */
1836 interval *= 86400;
1837 if (*tmp != '\0')
1838 tmp++;
1839 break;
1840 case 'm':
1841 case 'M': /* months! */
1842 interval *= 86400 * 30;
1843 tmp++;
1844 break;
1845 case 'w':
1846 case 'W': /* weeks */
1847 interval *= 86400 * 7;
1848 tmp++;
1849 break;
1850 }
1851 if (*tmp) {
1852 com_err(program_name, 0,
1853 _("bad interval - %s"), optarg);
1854 usage();
1855 }
1856 i_flag = 1;
1857 open_flag = EXT2_FLAG_RW;
1858 break;
1859 case 'j':
1860 if (!journal_size)
1861 journal_size = -1;
1862 open_flag = EXT2_FLAG_RW;
1863 break;
1864 case 'J':
1865 parse_journal_opts(optarg);
1866 open_flag = EXT2_FLAG_RW;
1867 break;
1868 case 'l':
1869 l_flag = 1;
1870 break;
1871 case 'L':
1872 new_label = optarg;
1873 L_flag = 1;
1874 open_flag |= EXT2_FLAG_RW |
1875 EXT2_FLAG_JOURNAL_DEV_OK;
1876 break;
1877 case 'm':
1878 reserved_ratio = strtod(optarg, &tmp);
1879 if (*tmp || reserved_ratio > 50 ||
1880 reserved_ratio < 0) {
1881 com_err(program_name, 0,
1882 _("bad reserved block ratio - %s"),
1883 optarg);
1884 usage();
1885 }
1886 m_flag = 1;
1887 open_flag = EXT2_FLAG_RW;
1888 break;
1889 case 'M':
1890 new_last_mounted = optarg;
1891 M_flag = 1;
1892 open_flag = EXT2_FLAG_RW;
1893 break;
1894 case 'o':
1895 if (mntopts_cmd) {
1896 com_err(program_name, 0, "%s",
1897 _("-o may only be specified once"));
1898 usage();
1899 }
1900 mntopts_cmd = optarg;
1901 open_flag = EXT2_FLAG_RW;
1902 break;
1903 case 'O':
1904 if (features_cmd) {
1905 com_err(program_name, 0, "%s",
1906 _("-O may only be specified once"));
1907 usage();
1908 }
1909 features_cmd = optarg;
1910 open_flag = EXT2_FLAG_RW;
1911 break;
1912 case 'Q':
1913 Q_flag = 1;
1914 ret = parse_quota_opts(optarg, option_handle_function);
1915 if (ret)
1916 exit(1);
1917 open_flag = EXT2_FLAG_RW;
1918 break;
1919 case 'r':
1920 reserved_blocks = strtoul(optarg, &tmp, 0);
1921 if (*tmp) {
1922 com_err(program_name, 0,
1923 _("bad reserved blocks count - %s"),
1924 optarg);
1925 usage();
1926 }
1927 r_flag = 1;
1928 open_flag = EXT2_FLAG_RW;
1929 break;
1930 case 's': /* Deprecated */
1931 s_flag = atoi(optarg);
1932 open_flag = EXT2_FLAG_RW;
1933 break;
1934 case 'T':
1935 T_flag = 1;
1936 last_check_time = parse_time(optarg);
1937 open_flag = EXT2_FLAG_RW;
1938 break;
1939 case 'u':
1940 resuid = strtoul(optarg, &tmp, 0);
1941 if (*tmp) {
1942 pw = getpwnam(optarg);
1943 if (pw == NULL)
1944 tmp = optarg;
1945 else {
1946 resuid = pw->pw_uid;
1947 *tmp = 0;
1948 }
1949 }
1950 if (*tmp) {
1951 com_err(program_name, 0,
1952 _("bad uid/user name - %s"),
1953 optarg);
1954 usage();
1955 }
1956 u_flag = 1;
1957 open_flag = EXT2_FLAG_RW;
1958 break;
1959 case 'U':
1960 new_UUID = optarg;
1961 U_flag = 1;
1962 open_flag = EXT2_FLAG_RW |
1963 EXT2_FLAG_JOURNAL_DEV_OK;
1964 break;
1965 case 'I':
1966 new_inode_size = strtoul(optarg, &tmp, 0);
1967 if (*tmp) {
1968 com_err(program_name, 0,
1969 _("bad inode size - %s"),
1970 optarg);
1971 usage();
1972 }
1973 if (!((new_inode_size &
1974 (new_inode_size - 1)) == 0)) {
1975 com_err(program_name, 0,
1976 _("Inode size must be a "
1977 "power of two- %s"),
1978 optarg);
1979 usage();
1980 }
1981 open_flag = EXT2_FLAG_RW;
1982 I_flag = 1;
1983 break;
1984 case 'z':
1985 undo_file = optarg;
1986 break;
1987 default:
1988 usage();
1989 }
1990 if (optind < argc - 1 || optind == argc)
1991 usage();
1992 if (!open_flag && !l_flag)
1993 usage();
1994 io_options = strchr(argv[optind], '?');
1995 if (io_options)
1996 *io_options++ = 0;
1997 device_name = blkid_get_devname(NULL, argv[optind], NULL);
1998 if (!device_name) {
1999 com_err(program_name, 0, _("Unable to resolve '%s'"),
2000 argv[optind]);
2001 exit(1);
2002 }
2003 }
2004
2005 #ifdef CONFIG_BUILD_FINDFS
do_findfs(int argc,char ** argv)2006 void do_findfs(int argc, char **argv)
2007 {
2008 char *dev;
2009
2010 if ((argc != 2) ||
2011 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
2012 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
2013 exit(2);
2014 }
2015 dev = blkid_get_devname(NULL, argv[1], NULL);
2016 if (!dev) {
2017 com_err("findfs", 0, _("Unable to resolve '%s'"),
2018 argv[1]);
2019 exit(1);
2020 }
2021 puts(dev);
2022 exit(0);
2023 }
2024 #endif
2025
parse_extended_opts(ext2_filsys fs,const char * opts)2026 static int parse_extended_opts(ext2_filsys fs, const char *opts)
2027 {
2028 struct ext2_super_block *sb = fs->super;
2029 char *buf, *token, *next, *p, *arg;
2030 int len, hash_alg;
2031 int r_usage = 0;
2032 int encoding = 0;
2033 char *encoding_flags = NULL;
2034
2035 len = strlen(opts);
2036 buf = malloc(len+1);
2037 if (!buf) {
2038 fprintf(stderr, "%s",
2039 _("Couldn't allocate memory to parse options!\n"));
2040 return 1;
2041 }
2042 strcpy(buf, opts);
2043 for (token = buf; token && *token; token = next) {
2044 p = strchr(token, ',');
2045 next = 0;
2046 if (p) {
2047 *p = 0;
2048 next = p+1;
2049 }
2050 arg = strchr(token, '=');
2051 if (arg) {
2052 *arg = 0;
2053 arg++;
2054 }
2055 if (strcmp(token, "clear-mmp") == 0 ||
2056 strcmp(token, "clear_mmp") == 0) {
2057 clear_mmp = 1;
2058 } else if (strcmp(token, "mmp_update_interval") == 0) {
2059 unsigned long intv;
2060 if (!arg) {
2061 r_usage++;
2062 continue;
2063 }
2064 intv = strtoul(arg, &p, 0);
2065 if (*p) {
2066 fprintf(stderr,
2067 _("Invalid mmp_update_interval: %s\n"),
2068 arg);
2069 r_usage++;
2070 continue;
2071 }
2072 if (intv == 0) {
2073 intv = EXT4_MMP_UPDATE_INTERVAL;
2074 } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
2075 fprintf(stderr,
2076 _("mmp_update_interval too big: %lu\n"),
2077 intv);
2078 r_usage++;
2079 continue;
2080 }
2081 printf(P_("Setting multiple mount protection update "
2082 "interval to %lu second\n",
2083 "Setting multiple mount protection update "
2084 "interval to %lu seconds\n", intv),
2085 intv);
2086 sb->s_mmp_update_interval = intv;
2087 ext2fs_mark_super_dirty(fs);
2088 } else if (!strcmp(token, "force_fsck")) {
2089 sb->s_state |= EXT2_ERROR_FS;
2090 printf(_("Setting filesystem error flag to force fsck.\n"));
2091 ext2fs_mark_super_dirty(fs);
2092 } else if (!strcmp(token, "test_fs")) {
2093 sb->s_flags |= EXT2_FLAGS_TEST_FILESYS;
2094 printf("Setting test filesystem flag\n");
2095 ext2fs_mark_super_dirty(fs);
2096 } else if (!strcmp(token, "^test_fs")) {
2097 sb->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
2098 printf("Clearing test filesystem flag\n");
2099 ext2fs_mark_super_dirty(fs);
2100 } else if (strcmp(token, "stride") == 0) {
2101 if (!arg) {
2102 r_usage++;
2103 continue;
2104 }
2105 stride = strtoul(arg, &p, 0);
2106 if (*p) {
2107 fprintf(stderr,
2108 _("Invalid RAID stride: %s\n"),
2109 arg);
2110 r_usage++;
2111 continue;
2112 }
2113 stride_set = 1;
2114 } else if (strcmp(token, "stripe-width") == 0 ||
2115 strcmp(token, "stripe_width") == 0) {
2116 if (!arg) {
2117 r_usage++;
2118 continue;
2119 }
2120 stripe_width = strtoul(arg, &p, 0);
2121 if (*p) {
2122 fprintf(stderr,
2123 _("Invalid RAID stripe-width: %s\n"),
2124 arg);
2125 r_usage++;
2126 continue;
2127 }
2128 stripe_width_set = 1;
2129 } else if (strcmp(token, "hash_alg") == 0 ||
2130 strcmp(token, "hash-alg") == 0) {
2131 if (!arg) {
2132 r_usage++;
2133 continue;
2134 }
2135 hash_alg = e2p_string2hash(arg);
2136 if (hash_alg < 0) {
2137 fprintf(stderr,
2138 _("Invalid hash algorithm: %s\n"),
2139 arg);
2140 r_usage++;
2141 continue;
2142 }
2143 sb->s_def_hash_version = hash_alg;
2144 printf(_("Setting default hash algorithm "
2145 "to %s (%d)\n"),
2146 arg, hash_alg);
2147 ext2fs_mark_super_dirty(fs);
2148 } else if (!strcmp(token, "mount_opts")) {
2149 if (!arg) {
2150 r_usage++;
2151 continue;
2152 }
2153 if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
2154 fprintf(stderr,
2155 "Extended mount options too long\n");
2156 continue;
2157 }
2158 ext_mount_opts = strdup(arg);
2159 } else if (!strcmp(token, "encoding")) {
2160 if (!arg) {
2161 r_usage++;
2162 continue;
2163 }
2164 if (mount_flags & EXT2_MF_MOUNTED) {
2165 fputs(_("The casefold feature may only be enabled when "
2166 "the filesystem is unmounted.\n"), stderr);
2167 r_usage++;
2168 continue;
2169 }
2170 if (ext2fs_has_feature_casefold(sb) && !enabling_casefold) {
2171 fprintf(stderr, _("Cannot alter existing encoding\n"));
2172 r_usage++;
2173 continue;
2174 }
2175 encoding = e2p_str2encoding(arg);
2176 if (encoding < 0) {
2177 fprintf(stderr, _("Invalid encoding: %s\n"), arg);
2178 r_usage++;
2179 continue;
2180 }
2181 enabling_casefold = 1;
2182 sb->s_encoding = encoding;
2183 printf(_("Setting encoding to '%s'\n"), arg);
2184 sb->s_encoding_flags =
2185 e2p_get_encoding_flags(sb->s_encoding);
2186 } else if (!strcmp(token, "encoding_flags")) {
2187 if (!arg) {
2188 r_usage++;
2189 continue;
2190 }
2191 encoding_flags = arg;
2192 } else
2193 r_usage++;
2194 }
2195
2196 if (encoding > 0 && !r_usage) {
2197 sb->s_encoding_flags =
2198 e2p_get_encoding_flags(sb->s_encoding);
2199
2200 if (encoding_flags &&
2201 e2p_str2encoding_flags(sb->s_encoding, encoding_flags,
2202 &sb->s_encoding_flags)) {
2203 fprintf(stderr, _("error: Invalid encoding flag: %s\n"),
2204 encoding_flags);
2205 r_usage++;
2206 } else if (encoding_flags)
2207 printf(_("Setting encoding_flags to '%s'\n"),
2208 encoding_flags);
2209 ext2fs_set_feature_casefold(sb);
2210 ext2fs_mark_super_dirty(fs);
2211 } else if (encoding_flags && !r_usage) {
2212 fprintf(stderr, _("error: An encoding must be explicitly "
2213 "specified when passing encoding-flags\n"));
2214 r_usage++;
2215 }
2216 if (r_usage) {
2217 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
2218 "Extended options are separated by commas, "
2219 "and may take an argument which\n"
2220 "\tis set off by an equals ('=') sign.\n\n"
2221 "Valid extended options are:\n"
2222 "\tclear_mmp\n"
2223 "\thash_alg=<hash algorithm>\n"
2224 "\tmount_opts=<extended default mount options>\n"
2225 "\tmmp_update_interval=<mmp update interval in seconds>\n"
2226 "\tstride=<RAID per-disk chunk size in blocks>\n"
2227 "\tstripe_width=<RAID stride*data disks in blocks>\n"
2228 "\tforce_fsck\n"
2229 "\ttest_fs\n"
2230 "\t^test_fs\n"
2231 "\tencoding=<encoding>\n"
2232 "\tencoding_flags=<flags>\n"));
2233 free(buf);
2234 return 1;
2235 }
2236 free(buf);
2237
2238 return 0;
2239 }
2240
2241 /*
2242 * Fill in the block bitmap bmap with the information regarding the
2243 * blocks to be moved
2244 */
get_move_bitmaps(ext2_filsys fs,int new_ino_blks_per_grp,ext2fs_block_bitmap bmap)2245 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2246 ext2fs_block_bitmap bmap)
2247 {
2248 dgrp_t i;
2249 int retval;
2250 ext2_badblocks_list bb_list = 0;
2251 blk64_t j, needed_blocks = 0;
2252 blk64_t start_blk, end_blk;
2253
2254 retval = ext2fs_read_bb_inode(fs, &bb_list);
2255 if (retval)
2256 return retval;
2257
2258 for (i = 0; i < fs->group_desc_count; i++) {
2259 start_blk = ext2fs_inode_table_loc(fs, i) +
2260 fs->inode_blocks_per_group;
2261
2262 end_blk = ext2fs_inode_table_loc(fs, i) +
2263 new_ino_blks_per_grp;
2264
2265 for (j = start_blk; j < end_blk; j++) {
2266 if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2267 /*
2268 * IF the block is a bad block we fail
2269 */
2270 if (ext2fs_badblocks_list_test(bb_list, j)) {
2271 ext2fs_badblocks_list_free(bb_list);
2272 return ENOSPC;
2273 }
2274
2275 ext2fs_mark_block_bitmap2(bmap, j);
2276 } else {
2277 /*
2278 * We are going to use this block for
2279 * inode table. So mark them used.
2280 */
2281 ext2fs_mark_block_bitmap2(fs->block_map, j);
2282 }
2283 }
2284 needed_blocks += end_blk - start_blk;
2285 }
2286
2287 ext2fs_badblocks_list_free(bb_list);
2288 if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2289 return ENOSPC;
2290
2291 return 0;
2292 }
2293
ext2fs_is_meta_block(ext2_filsys fs,blk64_t blk)2294 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2295 {
2296 dgrp_t group;
2297 group = ext2fs_group_of_blk2(fs, blk);
2298 if (ext2fs_block_bitmap_loc(fs, group) == blk)
2299 return 1;
2300 if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2301 return 1;
2302 return 0;
2303 }
2304
ext2fs_is_block_in_group(ext2_filsys fs,dgrp_t group,blk64_t blk)2305 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2306 {
2307 blk64_t start_blk, end_blk;
2308 start_blk = fs->super->s_first_data_block +
2309 EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2310 /*
2311 * We cannot get new block beyond end_blk for for the last block group
2312 * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2313 */
2314 end_blk = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2315 if (blk >= start_blk && blk <= end_blk)
2316 return 1;
2317 return 0;
2318 }
2319
move_block(ext2_filsys fs,ext2fs_block_bitmap bmap)2320 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2321 {
2322
2323 char *buf;
2324 dgrp_t group = 0;
2325 errcode_t retval;
2326 int meta_data = 0;
2327 blk64_t blk, new_blk, goal;
2328 struct blk_move *bmv;
2329
2330 retval = ext2fs_get_mem(fs->blocksize, &buf);
2331 if (retval)
2332 return retval;
2333
2334 for (new_blk = blk = fs->super->s_first_data_block;
2335 blk < ext2fs_blocks_count(fs->super); blk++) {
2336 if (!ext2fs_test_block_bitmap2(bmap, blk))
2337 continue;
2338
2339 if (ext2fs_is_meta_block(fs, blk)) {
2340 /*
2341 * If the block is mapping a fs meta data block
2342 * like group desc/block bitmap/inode bitmap. We
2343 * should find a block in the same group and fix
2344 * the respective fs metadata pointers. Otherwise
2345 * fail
2346 */
2347 group = ext2fs_group_of_blk2(fs, blk);
2348 goal = ext2fs_group_first_block2(fs, group);
2349 meta_data = 1;
2350
2351 } else {
2352 goal = new_blk;
2353 }
2354 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2355 if (retval)
2356 goto err_out;
2357
2358 /* new fs meta data block should be in the same group */
2359 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2360 retval = ENOSPC;
2361 goto err_out;
2362 }
2363
2364 /* Mark this block as allocated */
2365 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2366
2367 /* Add it to block move list */
2368 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2369 if (retval)
2370 goto err_out;
2371
2372 bmv->old_loc = blk;
2373 bmv->new_loc = new_blk;
2374
2375 list_add(&(bmv->list), &blk_move_list);
2376
2377 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2378 if (retval)
2379 goto err_out;
2380
2381 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2382 if (retval)
2383 goto err_out;
2384 }
2385
2386 err_out:
2387 ext2fs_free_mem(&buf);
2388 return retval;
2389 }
2390
translate_block(blk64_t blk)2391 static blk64_t translate_block(blk64_t blk)
2392 {
2393 struct list_head *entry;
2394 struct blk_move *bmv;
2395
2396 list_for_each(entry, &blk_move_list) {
2397 bmv = list_entry(entry, struct blk_move, list);
2398 if (bmv->old_loc == blk)
2399 return bmv->new_loc;
2400 }
2401
2402 return 0;
2403 }
2404
process_block(ext2_filsys fs EXT2FS_ATTR ((unused)),blk64_t * block_nr,e2_blkcnt_t blockcnt EXT2FS_ATTR ((unused)),blk64_t ref_block EXT2FS_ATTR ((unused)),int ref_offset EXT2FS_ATTR ((unused)),void * priv_data)2405 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2406 blk64_t *block_nr,
2407 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2408 blk64_t ref_block EXT2FS_ATTR((unused)),
2409 int ref_offset EXT2FS_ATTR((unused)),
2410 void *priv_data)
2411 {
2412 int ret = 0;
2413 blk64_t new_blk;
2414 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2415
2416 if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2417 return 0;
2418 new_blk = translate_block(*block_nr);
2419 if (new_blk) {
2420 *block_nr = new_blk;
2421 /*
2422 * This will force the ext2fs_write_inode in the iterator
2423 */
2424 ret |= BLOCK_CHANGED;
2425 }
2426
2427 return ret;
2428 }
2429
inode_scan_and_fix(ext2_filsys fs,ext2fs_block_bitmap bmap)2430 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2431 {
2432 errcode_t retval = 0;
2433 ext2_ino_t ino;
2434 blk64_t blk;
2435 char *block_buf = 0;
2436 struct ext2_inode inode;
2437 ext2_inode_scan scan = NULL;
2438
2439 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2440 if (retval)
2441 return retval;
2442
2443 retval = ext2fs_open_inode_scan(fs, 0, &scan);
2444 if (retval)
2445 goto err_out;
2446
2447 while (1) {
2448 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2449 if (retval)
2450 goto err_out;
2451
2452 if (!ino)
2453 break;
2454
2455 if (inode.i_links_count == 0)
2456 continue; /* inode not in use */
2457
2458 /* FIXME!!
2459 * If we end up modifying the journal inode
2460 * the sb->s_jnl_blocks will differ. But a
2461 * subsequent e2fsck fixes that.
2462 * Do we need to fix this ??
2463 */
2464
2465 if (ext2fs_file_acl_block(fs, &inode) &&
2466 ext2fs_test_block_bitmap2(bmap,
2467 ext2fs_file_acl_block(fs, &inode))) {
2468 blk = translate_block(ext2fs_file_acl_block(fs,
2469 &inode));
2470 if (!blk)
2471 continue;
2472
2473 ext2fs_file_acl_block_set(fs, &inode, blk);
2474
2475 /*
2476 * Write the inode to disk so that inode table
2477 * resizing can work
2478 */
2479 retval = ext2fs_write_inode(fs, ino, &inode);
2480 if (retval)
2481 goto err_out;
2482 }
2483
2484 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2485 continue;
2486
2487 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2488 process_block, bmap);
2489 if (retval)
2490 goto err_out;
2491
2492 }
2493
2494 err_out:
2495 ext2fs_free_mem(&block_buf);
2496 ext2fs_close_inode_scan(scan);
2497
2498 return retval;
2499 }
2500
2501 /*
2502 * We need to scan for inode and block bitmaps that may need to be
2503 * moved. This can take place if the filesystem was formatted for
2504 * RAID arrays using the mke2fs's extended option "stride".
2505 */
group_desc_scan_and_fix(ext2_filsys fs,ext2fs_block_bitmap bmap)2506 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2507 {
2508 dgrp_t i;
2509 blk64_t blk, new_blk;
2510
2511 for (i = 0; i < fs->group_desc_count; i++) {
2512 blk = ext2fs_block_bitmap_loc(fs, i);
2513 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2514 new_blk = translate_block(blk);
2515 if (!new_blk)
2516 continue;
2517 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2518 }
2519
2520 blk = ext2fs_inode_bitmap_loc(fs, i);
2521 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2522 new_blk = translate_block(blk);
2523 if (!new_blk)
2524 continue;
2525 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2526 }
2527 }
2528 return 0;
2529 }
2530
expand_inode_table(ext2_filsys fs,unsigned long new_ino_size)2531 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2532 {
2533 dgrp_t i;
2534 blk64_t blk;
2535 errcode_t retval;
2536 int new_ino_blks_per_grp;
2537 unsigned int j;
2538 char *old_itable = NULL, *new_itable = NULL;
2539 char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2540 unsigned long old_ino_size;
2541 int old_itable_size, new_itable_size;
2542
2543 old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2544 old_ino_size = EXT2_INODE_SIZE(fs->super);
2545
2546 new_ino_blks_per_grp = ext2fs_div_ceil(
2547 EXT2_INODES_PER_GROUP(fs->super) *
2548 new_ino_size,
2549 fs->blocksize);
2550
2551 new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2552
2553 retval = ext2fs_get_mem(old_itable_size, &old_itable);
2554 if (retval)
2555 return retval;
2556
2557 retval = ext2fs_get_mem(new_itable_size, &new_itable);
2558 if (retval)
2559 goto err_out;
2560
2561 tmp_old_itable = old_itable;
2562 tmp_new_itable = new_itable;
2563
2564 for (i = 0; i < fs->group_desc_count; i++) {
2565 blk = ext2fs_inode_table_loc(fs, i);
2566 retval = io_channel_read_blk64(fs->io, blk,
2567 fs->inode_blocks_per_group, old_itable);
2568 if (retval)
2569 goto err_out;
2570
2571 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2572 memcpy(new_itable, old_itable, old_ino_size);
2573
2574 memset(new_itable+old_ino_size, 0,
2575 new_ino_size - old_ino_size);
2576
2577 new_itable += new_ino_size;
2578 old_itable += old_ino_size;
2579 }
2580
2581 /* reset the pointer */
2582 old_itable = tmp_old_itable;
2583 new_itable = tmp_new_itable;
2584
2585 retval = io_channel_write_blk64(fs->io, blk,
2586 new_ino_blks_per_grp, new_itable);
2587 if (retval)
2588 goto err_out;
2589 }
2590
2591 /* Update the meta data */
2592 fs->inode_blocks_per_group = new_ino_blks_per_grp;
2593 ext2fs_free_inode_cache(fs->icache);
2594 fs->icache = 0;
2595 fs->super->s_inode_size = new_ino_size;
2596
2597 err_out:
2598 if (old_itable)
2599 ext2fs_free_mem(&old_itable);
2600
2601 if (new_itable)
2602 ext2fs_free_mem(&new_itable);
2603
2604 return retval;
2605 }
2606
ext2fs_calculate_summary_stats(ext2_filsys fs)2607 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
2608 {
2609 blk64_t blk;
2610 ext2_ino_t ino;
2611 unsigned int group = 0;
2612 unsigned int count = 0;
2613 int total_free = 0;
2614 int group_free = 0;
2615
2616 /*
2617 * First calculate the block statistics
2618 */
2619 for (blk = fs->super->s_first_data_block;
2620 blk < ext2fs_blocks_count(fs->super); blk++) {
2621 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
2622 group_free++;
2623 total_free++;
2624 }
2625 count++;
2626 if ((count == fs->super->s_blocks_per_group) ||
2627 (blk == ext2fs_blocks_count(fs->super)-1)) {
2628 ext2fs_bg_free_blocks_count_set(fs, group++,
2629 group_free);
2630 count = 0;
2631 group_free = 0;
2632 }
2633 }
2634 total_free = EXT2FS_C2B(fs, total_free);
2635 ext2fs_free_blocks_count_set(fs->super, total_free);
2636
2637 /*
2638 * Next, calculate the inode statistics
2639 */
2640 group_free = 0;
2641 total_free = 0;
2642 count = 0;
2643 group = 0;
2644
2645 /* Protect loop from wrap-around if s_inodes_count maxed */
2646 for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
2647 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
2648 group_free++;
2649 total_free++;
2650 }
2651 count++;
2652 if ((count == fs->super->s_inodes_per_group) ||
2653 (ino == fs->super->s_inodes_count)) {
2654 ext2fs_bg_free_inodes_count_set(fs, group++,
2655 group_free);
2656 count = 0;
2657 group_free = 0;
2658 }
2659 }
2660 fs->super->s_free_inodes_count = total_free;
2661 ext2fs_mark_super_dirty(fs);
2662 return 0;
2663 }
2664
2665 #define list_for_each_safe(pos, pnext, head) \
2666 for (pos = (head)->next, pnext = pos->next; pos != (head); \
2667 pos = pnext, pnext = pos->next)
2668
free_blk_move_list(void)2669 static void free_blk_move_list(void)
2670 {
2671 struct list_head *entry, *tmp;
2672 struct blk_move *bmv;
2673
2674 list_for_each_safe(entry, tmp, &blk_move_list) {
2675 bmv = list_entry(entry, struct blk_move, list);
2676 list_del(entry);
2677 ext2fs_free_mem(&bmv);
2678 }
2679 return;
2680 }
2681
resize_inode(ext2_filsys fs,unsigned long new_size)2682 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2683 {
2684 errcode_t retval;
2685 int new_ino_blks_per_grp;
2686 ext2fs_block_bitmap bmap;
2687
2688 retval = ext2fs_read_inode_bitmap(fs);
2689 if (retval) {
2690 fputs(_("Failed to read inode bitmap\n"), stderr);
2691 return retval;
2692 }
2693 retval = ext2fs_read_block_bitmap(fs);
2694 if (retval) {
2695 fputs(_("Failed to read block bitmap\n"), stderr);
2696 return retval;
2697 }
2698 INIT_LIST_HEAD(&blk_move_list);
2699
2700
2701 new_ino_blks_per_grp = ext2fs_div_ceil(
2702 EXT2_INODES_PER_GROUP(fs->super)*
2703 new_size,
2704 fs->blocksize);
2705
2706 /* We may change the file system.
2707 * Mark the file system as invalid so that
2708 * the user is prompted to run fsck.
2709 */
2710 fs->super->s_state &= ~EXT2_VALID_FS;
2711
2712 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2713 &bmap);
2714 if (retval) {
2715 fputs(_("Failed to allocate block bitmap when "
2716 "increasing inode size\n"), stderr);
2717 return retval;
2718 }
2719 retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2720 if (retval) {
2721 fputs(_("Not enough space to increase inode size \n"), stderr);
2722 goto err_out;
2723 }
2724 retval = move_block(fs, bmap);
2725 if (retval) {
2726 fputs(_("Failed to relocate blocks during inode resize \n"),
2727 stderr);
2728 goto err_out;
2729 }
2730 retval = inode_scan_and_fix(fs, bmap);
2731 if (retval)
2732 goto err_out_undo;
2733
2734 retval = group_desc_scan_and_fix(fs, bmap);
2735 if (retval)
2736 goto err_out_undo;
2737
2738 retval = expand_inode_table(fs, new_size);
2739 if (retval)
2740 goto err_out_undo;
2741
2742 ext2fs_calculate_summary_stats(fs);
2743
2744 fs->super->s_state |= EXT2_VALID_FS;
2745 /* mark super block and block bitmap as dirty */
2746 ext2fs_mark_super_dirty(fs);
2747 ext2fs_mark_bb_dirty(fs);
2748
2749 err_out:
2750 free_blk_move_list();
2751 ext2fs_free_block_bitmap(bmap);
2752
2753 return retval;
2754
2755 err_out_undo:
2756 free_blk_move_list();
2757 ext2fs_free_block_bitmap(bmap);
2758 fputs(_("Error in resizing the inode size.\n"
2759 "Run e2undo to undo the "
2760 "file system changes. \n"), stderr);
2761
2762 return retval;
2763 }
2764
tune2fs_setup_tdb(const char * name,io_manager * io_ptr)2765 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2766 {
2767 errcode_t retval = 0;
2768 const char *tdb_dir;
2769 char *tdb_file = NULL;
2770 char *dev_name, *tmp_name;
2771
2772 /* (re)open a specific undo file */
2773 if (undo_file && undo_file[0] != 0) {
2774 retval = set_undo_io_backing_manager(*io_ptr);
2775 if (retval)
2776 goto err;
2777 *io_ptr = undo_io_manager;
2778 retval = set_undo_io_backup_file(undo_file);
2779 if (retval)
2780 goto err;
2781 printf(_("Overwriting existing filesystem; this can be undone "
2782 "using the command:\n"
2783 " e2undo %s %s\n\n"),
2784 undo_file, name);
2785 return retval;
2786 }
2787
2788 /*
2789 * Configuration via a conf file would be
2790 * nice
2791 */
2792 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2793 if (!tdb_dir)
2794 tdb_dir = "/var/lib/e2fsprogs";
2795
2796 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2797 access(tdb_dir, W_OK))
2798 return 0;
2799
2800 tmp_name = strdup(name);
2801 if (!tmp_name)
2802 goto errout;
2803 dev_name = basename(tmp_name);
2804 tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2805 if (!tdb_file) {
2806 free(tmp_name);
2807 goto errout;
2808 }
2809 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2810 free(tmp_name);
2811
2812 if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2813 retval = errno;
2814 com_err(program_name, retval,
2815 _("while trying to delete %s"), tdb_file);
2816 goto errout;
2817 }
2818
2819 retval = set_undo_io_backing_manager(*io_ptr);
2820 if (retval)
2821 goto errout;
2822 *io_ptr = undo_io_manager;
2823 retval = set_undo_io_backup_file(tdb_file);
2824 if (retval)
2825 goto errout;
2826 printf(_("Overwriting existing filesystem; this can be undone "
2827 "using the command:\n"
2828 " e2undo %s %s\n\n"),
2829 tdb_file, name);
2830
2831 free(tdb_file);
2832 return 0;
2833 errout:
2834 free(tdb_file);
2835 err:
2836 com_err("tune2fs", retval, "while trying to setup undo file\n");
2837 return retval;
2838 }
2839
2840 static int
fs_update_journal_user(struct ext2_super_block * sb,__u8 old_uuid[UUID_SIZE])2841 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2842 {
2843 int retval, nr_users, start;
2844 journal_superblock_t *jsb;
2845 ext2_filsys jfs;
2846 __u8 *j_uuid;
2847 char *journal_path;
2848 char uuid[UUID_STR_SIZE];
2849 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2850
2851 if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
2852 return 0;
2853
2854 uuid_unparse(sb->s_journal_uuid, uuid);
2855 journal_path = blkid_get_devname(NULL, "UUID", uuid);
2856 if (!journal_path)
2857 return 0;
2858
2859 retval = ext2fs_open2(journal_path, io_options,
2860 EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2861 0, 0, unix_io_manager, &jfs);
2862 if (retval) {
2863 com_err(program_name, retval,
2864 _("while trying to open %s"),
2865 journal_path);
2866 return retval;
2867 }
2868
2869 retval = get_journal_sb(jfs, buf);
2870 if (retval != 0) {
2871 if (retval == EXT2_ET_UNSUPP_FEATURE)
2872 fprintf(stderr, _("%s is not a journal device.\n"),
2873 journal_path);
2874 return retval;
2875 }
2876
2877 jsb = (journal_superblock_t *) buf;
2878 /* Find the filesystem UUID */
2879 nr_users = ntohl(jsb->s_nr_users);
2880 if (nr_users > JFS_USERS_MAX) {
2881 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
2882 "is too high (%d).\n"), nr_users);
2883 return EXT2_ET_CORRUPT_JOURNAL_SB;
2884 }
2885
2886 j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2887 if (j_uuid == NULL) {
2888 fputs(_("Filesystem's UUID not found on journal device.\n"),
2889 stderr);
2890 return EXT2_ET_LOAD_EXT_JOURNAL;
2891 }
2892
2893 memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2894
2895 start = ext2fs_journal_sb_start(jfs->blocksize);
2896 /* Write back the journal superblock */
2897 retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2898 if (retval != 0) {
2899 com_err(program_name, retval,
2900 "while writing journal superblock.");
2901 return retval;
2902 }
2903
2904 ext2fs_close(jfs);
2905
2906 return 0;
2907 }
2908
2909 #ifndef BUILD_AS_LIB
main(int argc,char ** argv)2910 int main(int argc, char **argv)
2911 #else
2912 int tune2fs_main(int argc, char **argv)
2913 #endif /* BUILD_AS_LIB */
2914 {
2915 errcode_t retval;
2916 ext2_filsys fs;
2917 struct ext2_super_block *sb;
2918 io_manager io_ptr, io_ptr_orig = NULL;
2919 int rc = 0;
2920 char default_undo_file[1] = { 0 };
2921
2922 #ifdef ENABLE_NLS
2923 setlocale(LC_MESSAGES, "");
2924 setlocale(LC_CTYPE, "");
2925 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2926 textdomain(NLS_CAT_NAME);
2927 set_com_err_gettext(gettext);
2928 #endif
2929 if (argc && *argv)
2930 program_name = *argv;
2931 add_error_table(&et_ext2_error_table);
2932
2933 #ifdef CONFIG_BUILD_FINDFS
2934 if (strcmp(get_progname(argv[0]), "findfs") == 0)
2935 do_findfs(argc, argv);
2936 #endif
2937 if (strcmp(get_progname(argv[0]), "e2label") == 0)
2938 parse_e2label_options(argc, argv);
2939 else
2940 parse_tune2fs_options(argc, argv);
2941
2942 #ifdef CONFIG_TESTIO_DEBUG
2943 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2944 io_ptr = test_io_manager;
2945 test_io_backing_manager = unix_io_manager;
2946 } else
2947 #endif
2948 io_ptr = unix_io_manager;
2949
2950 retry_open:
2951 if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2952 open_flag |= EXT2_FLAG_SKIP_MMP;
2953
2954 open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_JOURNAL_DEV_OK;
2955
2956 /* keep the filesystem struct around to dump MMP data */
2957 open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2958
2959 retval = ext2fs_open2(device_name, io_options, open_flag,
2960 0, 0, io_ptr, &fs);
2961 if (retval) {
2962 com_err(program_name, retval,
2963 _("while trying to open %s"),
2964 device_name);
2965 if (retval == EXT2_ET_MMP_FSCK_ON ||
2966 retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2967 dump_mmp_msg(fs->mmp_buf,
2968 _("If you are sure the filesystem "
2969 "is not in use on any node, run:\n"
2970 "'tune2fs -f -E clear_mmp {device}'\n"));
2971 else if (retval == EXT2_ET_MMP_FAILED)
2972 dump_mmp_msg(fs->mmp_buf, NULL);
2973 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2974 fprintf(stderr,
2975 _("MMP block magic is bad. Try to fix it by "
2976 "running:\n'e2fsck -f %s'\n"), device_name);
2977 else if (retval == EXT2_ET_BAD_MAGIC)
2978 check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2979 else if (retval != EXT2_ET_MMP_FAILED)
2980 fprintf(stderr, "%s",
2981 _("Couldn't find valid filesystem superblock.\n"));
2982
2983 ext2fs_free(fs);
2984 exit(1);
2985 }
2986 if (ext2fs_has_feature_journal_dev(fs->super)) {
2987 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
2988 ext2fs_free(fs);
2989 exit(1);
2990 }
2991 fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
2992
2993 if (I_flag) {
2994 /*
2995 * Check the inode size is right so we can issue an
2996 * error message and bail before setting up the tdb
2997 * file.
2998 */
2999 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
3000 fprintf(stderr, _("The inode size is already %lu\n"),
3001 new_inode_size);
3002 rc = 1;
3003 goto closefs;
3004 }
3005 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
3006 fprintf(stderr, "%s",
3007 _("Shrinking inode size is not supported\n"));
3008 rc = 1;
3009 goto closefs;
3010 }
3011 if (new_inode_size > fs->blocksize) {
3012 fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
3013 new_inode_size, fs->blocksize);
3014 rc = 1;
3015 goto closefs;
3016 }
3017 check_fsck_needed(fs,
3018 _("Resizing inodes could take some time."));
3019 /*
3020 * If inode resize is requested use the
3021 * Undo I/O manager
3022 */
3023 undo_file = default_undo_file;
3024 }
3025
3026 /* Set up an undo file */
3027 if (undo_file && io_ptr_orig == NULL) {
3028 io_ptr_orig = io_ptr;
3029 retval = tune2fs_setup_tdb(device_name, &io_ptr);
3030 if (retval) {
3031 rc = 1;
3032 goto closefs;
3033 }
3034 if (io_ptr != io_ptr_orig) {
3035 ext2fs_close_free(&fs);
3036 goto retry_open;
3037 }
3038 }
3039
3040 sb = fs->super;
3041 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
3042
3043 if (print_label) {
3044 /* For e2label emulation */
3045 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
3046 sb->s_volume_name);
3047 remove_error_table(&et_ext2_error_table);
3048 goto closefs;
3049 }
3050
3051 retval = ext2fs_check_if_mounted(device_name, &mount_flags);
3052 if (retval) {
3053 com_err("ext2fs_check_if_mount", retval,
3054 _("while determining whether %s is mounted."),
3055 device_name);
3056 rc = 1;
3057 goto closefs;
3058 }
3059
3060 #ifdef NO_RECOVERY
3061 /* Warn if file system needs recovery and it is opened for writing. */
3062 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3063 (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
3064 (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
3065 fprintf(stderr,
3066 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
3067 "\te2fsck -E journal_only %s\n\n"
3068 "then rerun this command. Otherwise, any changes made may be overwritten\n"
3069 "by journal recovery.\n"), device_name);
3070 }
3071 #else
3072 /* Recover the journal if possible. */
3073 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & (EXT2_MF_BUSY | EXT2_MF_MOUNTED)) &&
3074 ext2fs_has_feature_journal_needs_recovery(fs->super)) {
3075 errcode_t err;
3076
3077 printf(_("Recovering journal.\n"));
3078 err = ext2fs_run_ext3_journal(&fs);
3079 if (err) {
3080 com_err("tune2fs", err, "while recovering journal.\n");
3081 printf(_("Please run e2fsck -fy %s.\n"), argv[1]);
3082 if (fs)
3083 ext2fs_close_free(&fs);
3084 exit(1);
3085 }
3086 sb = fs->super;
3087 }
3088 #endif
3089
3090 /* Normally we only need to write out the superblock */
3091 fs->flags |= EXT2_FLAG_SUPER_ONLY;
3092
3093 if (c_flag) {
3094 sb->s_max_mnt_count = max_mount_count;
3095 ext2fs_mark_super_dirty(fs);
3096 printf(_("Setting maximal mount count to %d\n"),
3097 max_mount_count);
3098 }
3099 if (C_flag) {
3100 sb->s_mnt_count = mount_count;
3101 ext2fs_mark_super_dirty(fs);
3102 printf(_("Setting current mount count to %d\n"), mount_count);
3103 }
3104 if (e_flag) {
3105 sb->s_errors = errors;
3106 ext2fs_mark_super_dirty(fs);
3107 printf(_("Setting error behavior to %d\n"), errors);
3108 }
3109 if (g_flag) {
3110 sb->s_def_resgid = resgid;
3111 ext2fs_mark_super_dirty(fs);
3112 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
3113 }
3114 if (i_flag) {
3115 if ((unsigned long long)interval >= (1ULL << 32)) {
3116 com_err(program_name, 0,
3117 _("interval between checks is too big (%lu)"),
3118 interval);
3119 rc = 1;
3120 goto closefs;
3121 }
3122 sb->s_checkinterval = interval;
3123 ext2fs_mark_super_dirty(fs);
3124 printf(_("Setting interval between checks to %lu seconds\n"),
3125 interval);
3126 }
3127 if (m_flag) {
3128 ext2fs_r_blocks_count_set(sb, reserved_ratio *
3129 ext2fs_blocks_count(sb) / 100.0);
3130 ext2fs_mark_super_dirty(fs);
3131 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
3132 reserved_ratio, ext2fs_r_blocks_count(sb));
3133 }
3134 if (r_flag) {
3135 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
3136 com_err(program_name, 0,
3137 _("reserved blocks count is too big (%llu)"),
3138 reserved_blocks);
3139 rc = 1;
3140 goto closefs;
3141 }
3142 ext2fs_r_blocks_count_set(sb, reserved_blocks);
3143 ext2fs_mark_super_dirty(fs);
3144 printf(_("Setting reserved blocks count to %llu\n"),
3145 reserved_blocks);
3146 }
3147 if (s_flag == 1) {
3148 if (ext2fs_has_feature_sparse_super(sb)) {
3149 fputs(_("\nThe filesystem already has sparse "
3150 "superblocks.\n"), stderr);
3151 } else if (ext2fs_has_feature_meta_bg(sb)) {
3152 fputs(_("\nSetting the sparse superblock flag not "
3153 "supported\nfor filesystems with "
3154 "the meta_bg feature enabled.\n"),
3155 stderr);
3156 rc = 1;
3157 goto closefs;
3158 } else {
3159 ext2fs_set_feature_sparse_super(sb);
3160 sb->s_state &= ~EXT2_VALID_FS;
3161 ext2fs_mark_super_dirty(fs);
3162 printf(_("\nSparse superblock flag set. %s"),
3163 _(please_fsck));
3164 }
3165 }
3166 if (s_flag == 0) {
3167 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
3168 stderr);
3169 rc = 1;
3170 goto closefs;
3171 }
3172 if (T_flag) {
3173 sb->s_lastcheck = last_check_time;
3174 ext2fs_mark_super_dirty(fs);
3175 printf(_("Setting time filesystem last checked to %s\n"),
3176 ctime(&last_check_time));
3177 }
3178 if (u_flag) {
3179 sb->s_def_resuid = resuid;
3180 ext2fs_mark_super_dirty(fs);
3181 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
3182 }
3183 if (L_flag) {
3184 if (strlen(new_label) > sizeof(sb->s_volume_name))
3185 fputs(_("Warning: label too long, truncating.\n"),
3186 stderr);
3187 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
3188 strncpy(sb->s_volume_name, new_label,
3189 sizeof(sb->s_volume_name));
3190 ext2fs_mark_super_dirty(fs);
3191 }
3192 if (M_flag) {
3193 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
3194 strncpy(sb->s_last_mounted, new_last_mounted,
3195 sizeof(sb->s_last_mounted));
3196 ext2fs_mark_super_dirty(fs);
3197 }
3198 if (mntopts_cmd) {
3199 rc = update_mntopts(fs, mntopts_cmd);
3200 if (rc)
3201 goto closefs;
3202 }
3203 if (features_cmd) {
3204 rc = update_feature_set(fs, features_cmd);
3205 if (rc)
3206 goto closefs;
3207 }
3208 if (extended_cmd) {
3209 rc = parse_extended_opts(fs, extended_cmd);
3210 if (rc)
3211 goto closefs;
3212 if (clear_mmp && !f_flag) {
3213 fputs(_("Error in using clear_mmp. "
3214 "It must be used with -f\n"),
3215 stderr);
3216 goto closefs;
3217 }
3218 }
3219 if (clear_mmp) {
3220 rc = ext2fs_mmp_clear(fs);
3221 goto closefs;
3222 }
3223 if (journal_size || journal_device) {
3224 rc = add_journal(fs);
3225 if (rc)
3226 goto closefs;
3227 }
3228
3229 if (Q_flag) {
3230 if (mount_flags & EXT2_MF_MOUNTED) {
3231 fputs(_("The quota feature may only be changed when "
3232 "the filesystem is unmounted.\n"), stderr);
3233 rc = 1;
3234 goto closefs;
3235 }
3236 handle_quota_options(fs);
3237 }
3238
3239 if (U_flag) {
3240 int set_csum = 0;
3241 dgrp_t i;
3242 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3243 __u8 old_uuid[UUID_SIZE];
3244
3245 if (!ext2fs_has_feature_csum_seed(fs->super) &&
3246 (ext2fs_has_feature_metadata_csum(fs->super) ||
3247 ext2fs_has_feature_ea_inode(fs->super))) {
3248 check_fsck_needed(fs,
3249 _("Setting the UUID on this "
3250 "filesystem could take some time."));
3251 rewrite_checksums = 1;
3252 }
3253
3254 if (ext2fs_has_group_desc_csum(fs)) {
3255 /*
3256 * Changing the UUID on a metadata_csum FS requires
3257 * rewriting all metadata, which can race with a
3258 * mounted fs. Don't allow that unless we're saving
3259 * the checksum seed.
3260 */
3261 if ((mount_flags & EXT2_MF_MOUNTED) &&
3262 !ext2fs_has_feature_csum_seed(fs->super) &&
3263 ext2fs_has_feature_metadata_csum(fs->super)) {
3264 fputs(_("The UUID may only be "
3265 "changed when the filesystem is "
3266 "unmounted.\n"), stderr);
3267 fputs(_("If you only use kernels newer than "
3268 "v4.4, run 'tune2fs -O "
3269 "metadata_csum_seed' and re-run this "
3270 "command.\n"), stderr);
3271 try_confirm_csum_seed_support();
3272 exit(1);
3273 }
3274
3275 /*
3276 * Determine if the block group checksums are
3277 * correct so we know whether or not to set
3278 * them later on.
3279 */
3280 for (i = 0; i < fs->group_desc_count; i++)
3281 if (!ext2fs_group_desc_csum_verify(fs, i))
3282 break;
3283 if (i >= fs->group_desc_count)
3284 set_csum = 1;
3285 }
3286
3287 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
3288 if ((strcasecmp(new_UUID, "null") == 0) ||
3289 (strcasecmp(new_UUID, "clear") == 0)) {
3290 uuid_clear(sb->s_uuid);
3291 } else if (strcasecmp(new_UUID, "time") == 0) {
3292 uuid_generate_time(sb->s_uuid);
3293 } else if (strcasecmp(new_UUID, "random") == 0) {
3294 uuid_generate(sb->s_uuid);
3295 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
3296 com_err(program_name, 0, "%s",
3297 _("Invalid UUID format\n"));
3298 rc = 1;
3299 goto closefs;
3300 }
3301 ext2fs_init_csum_seed(fs);
3302 if (set_csum) {
3303 for (i = 0; i < fs->group_desc_count; i++)
3304 ext2fs_group_desc_csum_set(fs, i);
3305 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3306 }
3307
3308 /* If this is a journal dev, we need to copy UUID into jsb */
3309 if (!(rc = get_journal_sb(fs, buf))) {
3310 journal_superblock_t *jsb;
3311
3312 jsb = (journal_superblock_t *) buf;
3313 fputs(_("Need to update journal superblock.\n"), stdout);
3314 memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3315
3316 /* Writeback the journal superblock */
3317 if ((rc = io_channel_write_blk64(fs->io,
3318 ext2fs_journal_sb_start(fs->blocksize),
3319 -SUPERBLOCK_SIZE, buf)))
3320 goto closefs;
3321 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3322 goto closefs;
3323 else {
3324 rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3325
3326 if ((rc = fs_update_journal_user(sb, old_uuid)))
3327 goto closefs;
3328 }
3329
3330 ext2fs_mark_super_dirty(fs);
3331 }
3332
3333 if (I_flag) {
3334 if (mount_flags & EXT2_MF_MOUNTED) {
3335 fputs(_("The inode size may only be "
3336 "changed when the filesystem is "
3337 "unmounted.\n"), stderr);
3338 rc = 1;
3339 goto closefs;
3340 }
3341 if (ext2fs_has_feature_flex_bg(fs->super)) {
3342 fputs(_("Changing the inode size not supported for "
3343 "filesystems with the flex_bg\n"
3344 "feature enabled.\n"),
3345 stderr);
3346 rc = 1;
3347 goto closefs;
3348 }
3349 /*
3350 * We want to update group descriptor also
3351 * with the new free inode count
3352 */
3353 if (rewrite_checksums)
3354 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3355 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3356 retval = resize_inode(fs, new_inode_size);
3357 if (rewrite_checksums)
3358 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3359 if (retval == 0) {
3360 printf(_("Setting inode size %lu\n"),
3361 new_inode_size);
3362 rewrite_checksums = 1;
3363 } else {
3364 printf("%s", _("Failed to change inode size\n"));
3365 rc = 1;
3366 goto closefs;
3367 }
3368 }
3369
3370 if (rewrite_checksums)
3371 rewrite_metadata_checksums(fs);
3372
3373 if (l_flag)
3374 list_super(sb);
3375 if (stride_set) {
3376 sb->s_raid_stride = stride;
3377 ext2fs_mark_super_dirty(fs);
3378 printf(_("Setting stride size to %d\n"), stride);
3379 }
3380 if (stripe_width_set) {
3381 sb->s_raid_stripe_width = stripe_width;
3382 ext2fs_mark_super_dirty(fs);
3383 printf(_("Setting stripe width to %d\n"), stripe_width);
3384 }
3385 if (ext_mount_opts) {
3386 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3387 sizeof(fs->super->s_mount_opts));
3388 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3389 ext2fs_mark_super_dirty(fs);
3390 printf(_("Setting extended default mount options to '%s'\n"),
3391 ext_mount_opts);
3392 free(ext_mount_opts);
3393 }
3394
3395 free(device_name);
3396 remove_error_table(&et_ext2_error_table);
3397
3398 closefs:
3399 if (rc) {
3400 ext2fs_mmp_stop(fs);
3401 #ifndef BUILD_AS_LIB
3402 exit(1);
3403 #endif
3404 }
3405
3406 if (feature_64bit)
3407 convert_64bit(fs, feature_64bit);
3408 return (ext2fs_close_free(&fs) ? 1 : 0);
3409 }
3410