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_fc_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_FAST_COMMIT |
155 EXT4_FEATURE_COMPAT_STABLE_INODES,
156 /* Incompat */
157 EXT2_FEATURE_INCOMPAT_FILETYPE |
158 EXT3_FEATURE_INCOMPAT_EXTENTS |
159 EXT4_FEATURE_INCOMPAT_FLEX_BG |
160 EXT4_FEATURE_INCOMPAT_EA_INODE|
161 EXT4_FEATURE_INCOMPAT_MMP |
162 EXT4_FEATURE_INCOMPAT_64BIT |
163 EXT4_FEATURE_INCOMPAT_ENCRYPT |
164 EXT4_FEATURE_INCOMPAT_CSUM_SEED |
165 EXT4_FEATURE_INCOMPAT_LARGEDIR |
166 EXT4_FEATURE_INCOMPAT_CASEFOLD,
167 /* R/O compat */
168 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
169 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
170 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
171 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
172 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
173 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
174 EXT4_FEATURE_RO_COMPAT_QUOTA |
175 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
176 EXT4_FEATURE_RO_COMPAT_READONLY |
177 EXT4_FEATURE_RO_COMPAT_PROJECT |
178 EXT4_FEATURE_RO_COMPAT_VERITY
179 };
180
181 static __u32 clear_ok_features[3] = {
182 /* Compat */
183 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
184 EXT2_FEATURE_COMPAT_RESIZE_INODE |
185 EXT2_FEATURE_COMPAT_DIR_INDEX |
186 EXT4_FEATURE_COMPAT_FAST_COMMIT,
187 /* Incompat */
188 EXT2_FEATURE_INCOMPAT_FILETYPE |
189 EXT4_FEATURE_INCOMPAT_FLEX_BG |
190 EXT4_FEATURE_INCOMPAT_MMP |
191 EXT4_FEATURE_INCOMPAT_64BIT |
192 EXT4_FEATURE_INCOMPAT_CSUM_SEED,
193 /* R/O compat */
194 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
195 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
196 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
197 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
198 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
199 EXT4_FEATURE_RO_COMPAT_QUOTA |
200 EXT4_FEATURE_RO_COMPAT_PROJECT |
201 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
202 EXT4_FEATURE_RO_COMPAT_READONLY
203 };
204
205 /**
206 * Try to get journal super block if any
207 */
get_journal_sb(ext2_filsys jfs,char buf[SUPERBLOCK_SIZE])208 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
209 {
210 int retval;
211 journal_superblock_t *jsb;
212
213 if (!ext2fs_has_feature_journal_dev(jfs->super)) {
214 return EXT2_ET_UNSUPP_FEATURE;
215 }
216
217 /* Get the journal superblock */
218 if ((retval = io_channel_read_blk64(jfs->io,
219 ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
220 com_err(program_name, retval, "%s",
221 _("while reading journal superblock"));
222 return retval;
223 }
224
225 jsb = (journal_superblock_t *) buf;
226 if ((jsb->s_header.h_magic != (unsigned)ntohl(JBD2_MAGIC_NUMBER)) ||
227 (jsb->s_header.h_blocktype != (unsigned)ntohl(JBD2_SUPERBLOCK_V2))) {
228 fputs(_("Journal superblock not found!\n"), stderr);
229 return EXT2_ET_BAD_MAGIC;
230 }
231
232 return 0;
233 }
234
journal_user(__u8 uuid[UUID_SIZE],__u8 s_users[JBD2_USERS_SIZE],int nr_users)235 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JBD2_USERS_SIZE],
236 int nr_users)
237 {
238 int i;
239 for (i = 0; i < nr_users; i++) {
240 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
241 return &s_users[i * UUID_SIZE];
242 }
243
244 return NULL;
245 }
246
247 /*
248 * Remove an external journal from the filesystem
249 */
remove_journal_device(ext2_filsys fs)250 static int remove_journal_device(ext2_filsys fs)
251 {
252 char *journal_path;
253 ext2_filsys jfs;
254 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
255 journal_superblock_t *jsb;
256 int i, nr_users;
257 errcode_t retval;
258 int commit_remove_journal = 0;
259 io_manager io_ptr;
260
261 if (f_flag)
262 commit_remove_journal = 1; /* force removal even if error */
263
264 uuid_unparse(fs->super->s_journal_uuid, buf);
265 journal_path = blkid_get_devname(NULL, "UUID", buf);
266
267 if (!journal_path) {
268 journal_path =
269 ext2fs_find_block_device(fs->super->s_journal_dev);
270 if (!journal_path)
271 goto no_valid_journal;
272 }
273
274 #ifdef CONFIG_TESTIO_DEBUG
275 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
276 io_ptr = test_io_manager;
277 test_io_backing_manager = unix_io_manager;
278 } else
279 #endif
280 io_ptr = unix_io_manager;
281 retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
282 EXT2_FLAG_JOURNAL_DEV_OK, 0,
283 fs->blocksize, io_ptr, &jfs);
284 if (retval) {
285 com_err(program_name, retval, "%s",
286 _("while trying to open external journal"));
287 goto no_valid_journal;
288 }
289
290 if ((retval = get_journal_sb(jfs, buf))) {
291 if (retval == EXT2_ET_UNSUPP_FEATURE)
292 fprintf(stderr, _("%s is not a journal device.\n"),
293 journal_path);
294 goto no_valid_journal;
295 }
296
297 jsb = (journal_superblock_t *) buf;
298 /* Find the filesystem UUID */
299 nr_users = ntohl(jsb->s_nr_users);
300 if (nr_users > JBD2_USERS_MAX) {
301 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
302 "is too high (%d).\n"), nr_users);
303 commit_remove_journal = 1;
304 goto no_valid_journal;
305 }
306
307 if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
308 fputs(_("Filesystem's UUID not found on journal device.\n"),
309 stderr);
310 commit_remove_journal = 1;
311 goto no_valid_journal;
312 }
313 nr_users--;
314 for (i = 0; i < nr_users; i++)
315 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
316 jsb->s_nr_users = htonl(nr_users);
317
318 /* Write back the journal superblock */
319 retval = io_channel_write_blk64(jfs->io,
320 ext2fs_journal_sb_start(fs->blocksize),
321 -SUPERBLOCK_SIZE, buf);
322 if (retval) {
323 com_err(program_name, retval,
324 "while writing journal superblock.");
325 goto no_valid_journal;
326 }
327
328 commit_remove_journal = 1;
329
330 no_valid_journal:
331 if (commit_remove_journal == 0) {
332 fputs(_("Cannot locate journal device. It was NOT removed\n"
333 "Use -f option to remove missing journal device.\n"),
334 stderr);
335 return 1;
336 }
337 fs->super->s_journal_dev = 0;
338 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
339 uuid_clear(fs->super->s_journal_uuid);
340 ext2fs_mark_super_dirty(fs);
341 fputs(_("Journal removed\n"), stdout);
342 free(journal_path);
343
344 return 0;
345 }
346
347 /* 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)))348 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
349 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
350 blk64_t ref_block EXT2FS_ATTR((unused)),
351 int ref_offset EXT2FS_ATTR((unused)),
352 void *private EXT2FS_ATTR((unused)))
353 {
354 blk64_t block;
355 int group;
356
357 block = *blocknr;
358 ext2fs_unmark_block_bitmap2(fs->block_map, block);
359 group = ext2fs_group_of_blk2(fs, block);
360 ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
361 ext2fs_group_desc_csum_set(fs, group);
362 ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
363 return 0;
364 }
365
366 /*
367 * Remove the journal inode from the filesystem
368 */
remove_journal_inode(ext2_filsys fs)369 static errcode_t remove_journal_inode(ext2_filsys fs)
370 {
371 struct ext2_inode inode;
372 errcode_t retval;
373 ext2_ino_t ino = fs->super->s_journal_inum;
374
375 retval = ext2fs_read_inode(fs, ino, &inode);
376 if (retval) {
377 com_err(program_name, retval, "%s",
378 _("while reading journal inode"));
379 return retval;
380 }
381 if (ino == EXT2_JOURNAL_INO) {
382 retval = ext2fs_read_bitmaps(fs);
383 if (retval) {
384 com_err(program_name, retval, "%s",
385 _("while reading bitmaps"));
386 return retval;
387 }
388 retval = ext2fs_block_iterate3(fs, ino,
389 BLOCK_FLAG_READ_ONLY, NULL,
390 release_blocks_proc, NULL);
391 if (retval) {
392 com_err(program_name, retval, "%s",
393 _("while clearing journal inode"));
394 return retval;
395 }
396 memset(&inode, 0, sizeof(inode));
397 ext2fs_mark_bb_dirty(fs);
398 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
399 } else
400 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
401 retval = ext2fs_write_inode(fs, ino, &inode);
402 if (retval) {
403 com_err(program_name, retval, "%s",
404 _("while writing journal inode"));
405 return retval;
406 }
407 fs->super->s_journal_inum = 0;
408 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
409 ext2fs_mark_super_dirty(fs);
410
411 return 0;
412 }
413
414 /*
415 * Update the default mount options
416 */
update_mntopts(ext2_filsys fs,char * mntopts)417 static int update_mntopts(ext2_filsys fs, char *mntopts)
418 {
419 struct ext2_super_block *sb = fs->super;
420
421 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
422 fprintf(stderr, _("Invalid mount option set: %s\n"),
423 mntopts);
424 return 1;
425 }
426 ext2fs_mark_super_dirty(fs);
427
428 return 0;
429 }
430
check_fsck_needed(ext2_filsys fs,const char * prompt)431 static int check_fsck_needed(ext2_filsys fs, const char *prompt)
432 {
433 /* Refuse to modify anything but a freshly checked valid filesystem. */
434 if (!(fs->super->s_state & EXT2_VALID_FS) ||
435 (fs->super->s_state & EXT2_ERROR_FS) ||
436 (fs->super->s_lastcheck < fs->super->s_mtime)) {
437 puts(_(fsck_explain));
438 puts(_(please_fsck));
439 if (mount_flags & EXT2_MF_READONLY)
440 printf("%s", _("(and reboot afterwards!)\n"));
441 return 1;
442 }
443
444 /* Give the admin a few seconds to bail out of a dangerous op. */
445 if (!getenv("TUNE2FS_FORCE_PROMPT") && (!isatty(0) || !isatty(1)))
446 return 0;
447
448 puts(prompt);
449 proceed_question(5);
450
451 return 0;
452 }
453
request_dir_fsck_afterwards(ext2_filsys fs)454 static void request_dir_fsck_afterwards(ext2_filsys fs)
455 {
456 static int requested;
457
458 if (requested++)
459 return;
460 fsck_requested++;
461 fs->super->s_state &= ~EXT2_VALID_FS;
462 puts(_(fsck_explain));
463 puts(_(please_dir_fsck));
464 if (mount_flags & EXT2_MF_READONLY)
465 printf("%s", _("(and reboot afterwards!)\n"));
466 }
467
request_fsck_afterwards(ext2_filsys fs)468 static void request_fsck_afterwards(ext2_filsys fs)
469 {
470 static int requested = 0;
471
472 if (requested++)
473 return;
474 fsck_requested++;
475 fs->super->s_state &= ~EXT2_VALID_FS;
476 printf("\n%s\n", _(please_fsck));
477 if (mount_flags & EXT2_MF_READONLY)
478 printf("%s", _("(and reboot afterwards!)\n"));
479 }
480
convert_64bit(ext2_filsys fs,int direction)481 static void convert_64bit(ext2_filsys fs, int direction)
482 {
483 /*
484 * Is resize2fs going to demand a fsck run? Might as well tell the
485 * user now.
486 */
487 if (!fsck_requested &&
488 ((fs->super->s_state & EXT2_ERROR_FS) ||
489 !(fs->super->s_state & EXT2_VALID_FS) ||
490 fs->super->s_lastcheck < fs->super->s_mtime))
491 request_fsck_afterwards(fs);
492 if (fsck_requested)
493 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
494 direction > 0 ? "-b" : "-s", fs->device_name);
495 else
496 fprintf(stderr, _("Please run `resize2fs %s %s"),
497 direction > 0 ? "-b" : "-s", fs->device_name);
498
499 if (undo_file)
500 fprintf(stderr, _(" -z \"%s\""), undo_file);
501 if (direction > 0)
502 fprintf(stderr, _("' to enable 64-bit mode.\n"));
503 else
504 fprintf(stderr, _("' to disable 64-bit mode.\n"));
505 }
506
507 /*
508 * Rewrite directory blocks with checksums
509 */
510 struct rewrite_dir_context {
511 char *buf;
512 errcode_t errcode;
513 ext2_ino_t dir;
514 int is_htree:1;
515 int clear_htree:1;
516 };
517
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)518 static int rewrite_dir_block(ext2_filsys fs,
519 blk64_t *blocknr,
520 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
521 blk64_t ref_block EXT2FS_ATTR((unused)),
522 int ref_offset EXT2FS_ATTR((unused)),
523 void *priv_data)
524 {
525 struct ext2_dx_countlimit *dcl = NULL;
526 struct rewrite_dir_context *ctx = priv_data;
527 int dcl_offset, changed = 0;
528
529 ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
530 ctx->dir);
531 if (ctx->errcode)
532 return BLOCK_ABORT;
533
534 /*
535 * if htree node... Note that if we are clearing htree structures from
536 * the directory, we treat the htree internal block as an ordinary leaf.
537 * The code below will do the right thing and make space for checksum
538 * there.
539 */
540 if (ctx->is_htree && !ctx->clear_htree)
541 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
542 &dcl, &dcl_offset);
543 if (dcl) {
544 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
545 /* Ensure limit is the max size */
546 int max_entries = (fs->blocksize - dcl_offset) /
547 sizeof(struct ext2_dx_entry);
548 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
549 changed = 1;
550 dcl->limit = ext2fs_cpu_to_le16(max_entries);
551 }
552 } else {
553 /* If htree block is full then rebuild the dir */
554 if (ext2fs_le16_to_cpu(dcl->count) ==
555 ext2fs_le16_to_cpu(dcl->limit)) {
556 request_dir_fsck_afterwards(fs);
557 return 0;
558 }
559 /*
560 * Ensure dcl->limit is small enough to leave room for
561 * the checksum tail.
562 */
563 int max_entries = (fs->blocksize - (dcl_offset +
564 sizeof(struct ext2_dx_tail))) /
565 sizeof(struct ext2_dx_entry);
566 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
567 dcl->limit = ext2fs_cpu_to_le16(max_entries);
568 /* Always rewrite checksum */
569 changed = 1;
570 }
571 } else {
572 unsigned int rec_len, name_size;
573 char *top = ctx->buf + fs->blocksize;
574 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
575 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
576
577 /* Find last and penultimate dirent */
578 while ((char *)de < top) {
579 penultimate_de = last_de;
580 last_de = de;
581 ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
582 if (!ctx->errcode && !rec_len)
583 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
584 if (ctx->errcode)
585 return BLOCK_ABORT;
586 de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
587 }
588 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
589 if (ctx->errcode)
590 return BLOCK_ABORT;
591 name_size = ext2fs_dirent_name_len(last_de);
592
593 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
594 if (!penultimate_de)
595 return 0;
596 if (last_de->inode ||
597 name_size ||
598 rec_len != sizeof(struct ext2_dir_entry_tail))
599 return 0;
600 /*
601 * The last dirent is unused and the right length to
602 * have stored a checksum. Erase it.
603 */
604 ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
605 &rec_len);
606 if (!rec_len)
607 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
608 if (ctx->errcode)
609 return BLOCK_ABORT;
610 ext2fs_set_rec_len(fs, rec_len +
611 sizeof(struct ext2_dir_entry_tail),
612 penultimate_de);
613 changed = 1;
614 } else {
615 unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
616 struct ext2_dir_entry_tail *t;
617
618 /*
619 * If the last dirent looks like the tail, just update
620 * the checksum.
621 */
622 if (!last_de->inode &&
623 rec_len == csum_size) {
624 t = (struct ext2_dir_entry_tail *)last_de;
625 t->det_reserved_name_len =
626 EXT2_DIR_NAME_LEN_CSUM;
627 changed = 1;
628 goto out;
629 }
630 if (name_size & 3)
631 name_size = (name_size & ~3) + 4;
632 /* If there's not enough space for the tail, e2fsck */
633 if (rec_len <= (8 + name_size + csum_size)) {
634 request_dir_fsck_afterwards(fs);
635 return 0;
636 }
637 /* Shorten that last de and insert the tail */
638 ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
639 t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
640 ext2fs_initialize_dirent_tail(fs, t);
641
642 /* Always update checksum */
643 changed = 1;
644 }
645 }
646
647 out:
648 if (!changed)
649 return 0;
650
651 ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
652 0, ctx->dir);
653 if (ctx->errcode)
654 return BLOCK_ABORT;
655
656 return 0;
657 }
658
rewrite_directory(ext2_filsys fs,ext2_ino_t dir,struct ext2_inode * inode)659 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
660 struct ext2_inode *inode)
661 {
662 errcode_t retval;
663 struct rewrite_dir_context ctx;
664
665 retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
666 if (retval)
667 return retval;
668
669 ctx.is_htree = !!(inode->i_flags & EXT2_INDEX_FL);
670 ctx.clear_htree = !ext2fs_has_feature_dir_index(fs->super);
671 ctx.dir = dir;
672 ctx.errcode = 0;
673 retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
674 BLOCK_FLAG_DATA_ONLY,
675 0, rewrite_dir_block, &ctx);
676
677 ext2fs_free_mem(&ctx.buf);
678 if (retval)
679 return retval;
680
681 if (ctx.is_htree && ctx.clear_htree) {
682 inode->i_flags &= ~EXT2_INDEX_FL;
683 retval = ext2fs_write_inode(fs, dir, inode);
684 if (retval)
685 return retval;
686 }
687
688 return ctx.errcode;
689 }
690
691 /*
692 * Context information that does not change across rewrite_one_inode()
693 * invocations.
694 */
695 struct rewrite_context {
696 ext2_filsys fs;
697 struct ext2_inode *zero_inode;
698 char *ea_buf;
699 int inode_size;
700 };
701
702 #define fatal_err(code, args...) \
703 do { \
704 com_err(__func__, code, args); \
705 exit(1); \
706 } while (0);
707
update_ea_inode_hash(struct rewrite_context * ctx,ext2_ino_t ino,struct ext2_inode * inode)708 static void update_ea_inode_hash(struct rewrite_context *ctx, ext2_ino_t ino,
709 struct ext2_inode *inode)
710 {
711 errcode_t retval;
712 ext2_file_t file;
713 __u32 hash;
714
715 retval = ext2fs_file_open(ctx->fs, ino, 0, &file);
716 if (retval)
717 fatal_err(retval, "open ea_inode");
718 retval = ext2fs_file_read(file, ctx->ea_buf, inode->i_size,
719 NULL);
720 if (retval)
721 fatal_err(retval, "read ea_inode");
722 retval = ext2fs_file_close(file);
723 if (retval)
724 fatal_err(retval, "close ea_inode");
725
726 hash = ext2fs_crc32c_le(ctx->fs->csum_seed,
727 (unsigned char *) ctx->ea_buf, inode->i_size);
728 ext2fs_set_ea_inode_hash(inode, hash);
729 }
730
update_xattr_entry_hashes(ext2_filsys fs,struct ext2_ext_attr_entry * entry,struct ext2_ext_attr_entry * end)731 static int update_xattr_entry_hashes(ext2_filsys fs,
732 struct ext2_ext_attr_entry *entry,
733 struct ext2_ext_attr_entry *end)
734 {
735 int modified = 0;
736 errcode_t retval;
737
738 while (entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry)) {
739 if (entry->e_value_inum) {
740 retval = ext2fs_ext_attr_hash_entry2(fs, entry, NULL,
741 &entry->e_hash);
742 if (retval)
743 fatal_err(retval, "hash ea_inode entry");
744 modified = 1;
745 }
746 entry = EXT2_EXT_ATTR_NEXT(entry);
747 }
748 return modified;
749 }
750
update_inline_xattr_hashes(struct rewrite_context * ctx,struct ext2_inode_large * inode)751 static void update_inline_xattr_hashes(struct rewrite_context *ctx,
752 struct ext2_inode_large *inode)
753 {
754 struct ext2_ext_attr_entry *start, *end;
755 __u32 *ea_magic;
756
757 if (inode->i_extra_isize == 0)
758 return;
759
760 if (inode->i_extra_isize & 3 ||
761 inode->i_extra_isize > ctx->inode_size - EXT2_GOOD_OLD_INODE_SIZE)
762 fatal_err(EXT2_ET_INODE_CORRUPTED, "bad i_extra_isize")
763
764 ea_magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
765 inode->i_extra_isize);
766 if (*ea_magic != EXT2_EXT_ATTR_MAGIC)
767 return;
768
769 start = (struct ext2_ext_attr_entry *)(ea_magic + 1);
770 end = (struct ext2_ext_attr_entry *)((char *)inode + ctx->inode_size);
771
772 update_xattr_entry_hashes(ctx->fs, start, end);
773 }
774
update_block_xattr_hashes(struct rewrite_context * ctx,char * block_buf)775 static void update_block_xattr_hashes(struct rewrite_context *ctx,
776 char *block_buf)
777 {
778 struct ext2_ext_attr_header *header;
779 struct ext2_ext_attr_entry *start, *end;
780
781 header = (struct ext2_ext_attr_header *)block_buf;
782 if (header->h_magic != EXT2_EXT_ATTR_MAGIC)
783 return;
784
785 start = (struct ext2_ext_attr_entry *)(header+1);
786 end = (struct ext2_ext_attr_entry *)(block_buf + ctx->fs->blocksize);
787
788 if (update_xattr_entry_hashes(ctx->fs, start, end))
789 ext2fs_ext_attr_block_rehash(header, end);
790 }
791
rewrite_one_inode(struct rewrite_context * ctx,ext2_ino_t ino,struct ext2_inode * inode)792 static void rewrite_one_inode(struct rewrite_context *ctx, ext2_ino_t ino,
793 struct ext2_inode *inode)
794 {
795 blk64_t file_acl_block;
796 errcode_t retval;
797
798 if (!ext2fs_test_inode_bitmap2(ctx->fs->inode_map, ino)) {
799 if (!memcmp(inode, ctx->zero_inode, ctx->inode_size))
800 return;
801 memset(inode, 0, ctx->inode_size);
802 }
803
804 if (inode->i_flags & EXT4_EA_INODE_FL)
805 update_ea_inode_hash(ctx, ino, inode);
806
807 if (ctx->inode_size != EXT2_GOOD_OLD_INODE_SIZE)
808 update_inline_xattr_hashes(ctx,
809 (struct ext2_inode_large *)inode);
810
811 retval = ext2fs_write_inode_full(ctx->fs, ino, inode, ctx->inode_size);
812 if (retval)
813 fatal_err(retval, "while writing inode");
814
815 retval = ext2fs_fix_extents_checksums(ctx->fs, ino, inode);
816 if (retval)
817 fatal_err(retval, "while rewriting extents");
818
819 if (LINUX_S_ISDIR(inode->i_mode) &&
820 ext2fs_inode_has_valid_blocks2(ctx->fs, inode)) {
821 retval = rewrite_directory(ctx->fs, ino, inode);
822 if (retval)
823 fatal_err(retval, "while rewriting directories");
824 }
825
826 file_acl_block = ext2fs_file_acl_block(ctx->fs, inode);
827 if (!file_acl_block)
828 return;
829
830 retval = ext2fs_read_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
831 ino);
832 if (retval)
833 fatal_err(retval, "while rewriting extended attribute");
834
835 update_block_xattr_hashes(ctx, ctx->ea_buf);
836 retval = ext2fs_write_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
837 ino);
838 if (retval)
839 fatal_err(retval, "while rewriting extended attribute");
840 }
841
842 #define REWRITE_EA_FL 0x01 /* Rewrite EA inodes */
843 #define REWRITE_DIR_FL 0x02 /* Rewrite directories */
844 #define REWRITE_NONDIR_FL 0x04 /* Rewrite other inodes */
845 #define REWRITE_ALL (REWRITE_EA_FL | REWRITE_DIR_FL | REWRITE_NONDIR_FL)
846
rewrite_inodes_pass(struct rewrite_context * ctx,unsigned int flags)847 static void rewrite_inodes_pass(struct rewrite_context *ctx, unsigned int flags)
848 {
849 ext2_inode_scan scan;
850 errcode_t retval;
851 ext2_ino_t ino;
852 struct ext2_inode *inode;
853 int rewrite;
854
855 retval = ext2fs_get_mem(ctx->inode_size, &inode);
856 if (retval)
857 fatal_err(retval, "while allocating memory");
858
859 retval = ext2fs_open_inode_scan(ctx->fs, 0, &scan);
860 if (retval)
861 fatal_err(retval, "while opening inode scan");
862
863 do {
864 retval = ext2fs_get_next_inode_full(scan, &ino, inode,
865 ctx->inode_size);
866 if (retval)
867 fatal_err(retval, "while getting next inode");
868 if (!ino)
869 break;
870
871 rewrite = 0;
872 if (inode->i_flags & EXT4_EA_INODE_FL) {
873 if (flags & REWRITE_EA_FL)
874 rewrite = 1;
875 } else if (LINUX_S_ISDIR(inode->i_mode)) {
876 if (flags & REWRITE_DIR_FL)
877 rewrite = 1;
878 } else {
879 if (flags & REWRITE_NONDIR_FL)
880 rewrite = 1;
881 }
882 if (rewrite)
883 rewrite_one_inode(ctx, ino, inode);
884 } while (ino);
885 ext2fs_close_inode_scan(scan);
886 ext2fs_free_mem(&inode);
887 }
888
889 /*
890 * Forcibly rewrite checksums in inodes specified by 'flags'
891 */
rewrite_inodes(ext2_filsys fs,unsigned int flags)892 static void rewrite_inodes(ext2_filsys fs, unsigned int flags)
893 {
894 struct rewrite_context ctx = {
895 .fs = fs,
896 .inode_size = EXT2_INODE_SIZE(fs->super),
897 };
898 errcode_t retval;
899
900 if (fs->super->s_creator_os == EXT2_OS_HURD)
901 return;
902
903 retval = ext2fs_get_memzero(ctx.inode_size, &ctx.zero_inode);
904 if (retval)
905 fatal_err(retval, "while allocating memory");
906
907 retval = ext2fs_get_mem(64 * 1024, &ctx.ea_buf);
908 if (retval)
909 fatal_err(retval, "while allocating memory");
910
911 /*
912 * Extended attribute inodes have a lookup hash that needs to be
913 * recalculated with the new csum_seed. Other inodes referencing xattr
914 * inodes need this value to be up to date. That's why we do two passes:
915 *
916 * pass 1: update xattr inodes to update their lookup hash as well as
917 * other checksums.
918 *
919 * pass 2: go over other inodes to update their checksums.
920 */
921 if (ext2fs_has_feature_ea_inode(fs->super) && (flags & REWRITE_EA_FL))
922 rewrite_inodes_pass(&ctx, REWRITE_EA_FL);
923 flags &= ~REWRITE_EA_FL;
924 rewrite_inodes_pass(&ctx, flags);
925
926 ext2fs_free_mem(&ctx.zero_inode);
927 ext2fs_free_mem(&ctx.ea_buf);
928 }
929
rewrite_metadata_checksums(ext2_filsys fs,unsigned int flags)930 static void rewrite_metadata_checksums(ext2_filsys fs, unsigned int flags)
931 {
932 errcode_t retval;
933 dgrp_t i;
934
935 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
936 ext2fs_init_csum_seed(fs);
937 for (i = 0; i < fs->group_desc_count; i++)
938 ext2fs_group_desc_csum_set(fs, i);
939 retval = ext2fs_read_bitmaps(fs);
940 if (retval)
941 fatal_err(retval, "while reading bitmaps");
942 rewrite_inodes(fs, flags);
943 ext2fs_mark_ib_dirty(fs);
944 ext2fs_mark_bb_dirty(fs);
945 ext2fs_mmp_update2(fs, 1);
946 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
947 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
948 if (ext2fs_has_feature_metadata_csum(fs->super))
949 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
950 else
951 fs->super->s_checksum_type = 0;
952 ext2fs_mark_super_dirty(fs);
953 }
954
enable_uninit_bg(ext2_filsys fs)955 static void enable_uninit_bg(ext2_filsys fs)
956 {
957 struct ext2_group_desc *gd;
958 dgrp_t i;
959
960 for (i = 0; i < fs->group_desc_count; i++) {
961 gd = ext2fs_group_desc(fs, fs->group_desc, i);
962 gd->bg_itable_unused = 0;
963 gd->bg_flags = EXT2_BG_INODE_ZEROED;
964 ext2fs_group_desc_csum_set(fs, i);
965 }
966 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
967 }
968
zero_empty_inodes(ext2_filsys fs)969 static errcode_t zero_empty_inodes(ext2_filsys fs)
970 {
971 int length = EXT2_INODE_SIZE(fs->super);
972 struct ext2_inode *inode = NULL;
973 ext2_inode_scan scan;
974 errcode_t retval;
975 ext2_ino_t ino;
976
977 retval = ext2fs_open_inode_scan(fs, 0, &scan);
978 if (retval)
979 goto out;
980
981 retval = ext2fs_get_mem(length, &inode);
982 if (retval)
983 goto out;
984
985 do {
986 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
987 if (retval)
988 goto out;
989 if (!ino)
990 break;
991 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
992 memset(inode, 0, length);
993 retval = ext2fs_write_inode_full(fs, ino, inode,
994 length);
995 if (retval)
996 goto out;
997 }
998 } while (1);
999
1000 out:
1001 ext2fs_free_mem(&inode);
1002 ext2fs_close_inode_scan(scan);
1003 return retval;
1004 }
1005
disable_uninit_bg(ext2_filsys fs,__u32 csum_feature_flag)1006 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
1007 {
1008 struct ext2_group_desc *gd;
1009 dgrp_t i;
1010 errcode_t retval;
1011 blk64_t b, c, d;
1012
1013 /* Load bitmaps to ensure that the uninit ones get written out */
1014 fs->super->s_feature_ro_compat |= csum_feature_flag;
1015 retval = ext2fs_read_bitmaps(fs);
1016 fs->super->s_feature_ro_compat &= ~csum_feature_flag;
1017 if (retval) {
1018 com_err("disable_uninit_bg", retval,
1019 "while reading bitmaps");
1020 request_fsck_afterwards(fs);
1021 return retval;
1022 }
1023 ext2fs_mark_ib_dirty(fs);
1024 ext2fs_mark_bb_dirty(fs);
1025
1026 /* If we're only turning off uninit_bg, zero the inodes */
1027 if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
1028 retval = zero_empty_inodes(fs);
1029 if (retval) {
1030 com_err("disable_uninit_bg", retval,
1031 "while zeroing unused inodes");
1032 request_fsck_afterwards(fs);
1033 return retval;
1034 }
1035 }
1036
1037 /* The bbitmap is zeroed; we must mark group metadata blocks in use */
1038 for (i = 0; i < fs->group_desc_count; i++) {
1039 b = ext2fs_block_bitmap_loc(fs, i);
1040 ext2fs_mark_block_bitmap2(fs->block_map, b);
1041 b = ext2fs_inode_bitmap_loc(fs, i);
1042 ext2fs_mark_block_bitmap2(fs->block_map, b);
1043
1044 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
1045 if (retval == 0 && b)
1046 ext2fs_mark_block_bitmap2(fs->block_map, b);
1047 if (retval == 0 && c)
1048 ext2fs_mark_block_bitmap2(fs->block_map, c);
1049 if (retval == 0 && d)
1050 ext2fs_mark_block_bitmap2(fs->block_map, d);
1051 if (retval) {
1052 com_err("disable_uninit_bg", retval,
1053 "while initializing block bitmaps");
1054 request_fsck_afterwards(fs);
1055 }
1056
1057 gd = ext2fs_group_desc(fs, fs->group_desc, i);
1058 gd->bg_itable_unused = 0;
1059 gd->bg_flags = 0;
1060 ext2fs_group_desc_csum_set(fs, i);
1061 }
1062 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1063 ext2fs_mark_super_dirty(fs);
1064
1065 return 0;
1066 }
1067
1068 static void
try_confirm_csum_seed_support(void)1069 try_confirm_csum_seed_support(void)
1070 {
1071 if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK))
1072 fputs(_("WARNING: Could not confirm kernel support for "
1073 "metadata_csum_seed.\n This requires Linux >= "
1074 "v4.4.\n"), stderr);
1075 }
1076
1077 /*
1078 * Update the feature set as provided by the user.
1079 */
update_feature_set(ext2_filsys fs,char * features)1080 static int update_feature_set(ext2_filsys fs, char *features)
1081 {
1082 struct ext2_super_block *sb = fs->super;
1083 __u32 old_features[3];
1084 int type_err;
1085 unsigned int mask_err;
1086 errcode_t err;
1087 enum quota_type qtype;
1088
1089 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
1090 ((&sb->s_feature_compat)[(type)] & (mask)))
1091 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
1092 !((&sb->s_feature_compat)[(type)] & (mask)))
1093 #define FEATURE_CHANGED(type, mask) ((mask) & \
1094 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
1095
1096 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
1097 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
1098 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
1099
1100 if (e2p_edit_feature2(features, &sb->s_feature_compat,
1101 ok_features, clear_ok_features,
1102 &type_err, &mask_err)) {
1103 if (!mask_err)
1104 fprintf(stderr,
1105 _("Invalid filesystem option set: %s\n"),
1106 features);
1107 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
1108 fprintf(stderr, _("Clearing filesystem feature '%s' "
1109 "not supported.\n"),
1110 e2p_feature2string(type_err &
1111 E2P_FEATURE_TYPE_MASK,
1112 mask_err));
1113 else
1114 fprintf(stderr, _("Setting filesystem feature '%s' "
1115 "not supported.\n"),
1116 e2p_feature2string(type_err, mask_err));
1117 return 1;
1118 }
1119
1120 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1121 if ((mount_flags & EXT2_MF_MOUNTED) &&
1122 !(mount_flags & EXT2_MF_READONLY)) {
1123 fputs(_("The has_journal feature may only be "
1124 "cleared when the filesystem is\n"
1125 "unmounted or mounted "
1126 "read-only.\n"), stderr);
1127 return 1;
1128 }
1129 if (ext2fs_has_feature_journal_needs_recovery(sb) &&
1130 f_flag < 2) {
1131 fputs(_("The needs_recovery flag is set. "
1132 "Please run e2fsck before clearing\n"
1133 "the has_journal flag.\n"), stderr);
1134 return 1;
1135 }
1136 if (sb->s_journal_inum) {
1137 if (remove_journal_inode(fs))
1138 return 1;
1139 }
1140 if (sb->s_journal_dev) {
1141 if (remove_journal_device(fs))
1142 return 1;
1143 }
1144 }
1145
1146 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1147 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1148 if (ext2fs_has_feature_meta_bg(sb)) {
1149 fputs(_("Setting filesystem feature 'sparse_super' "
1150 "not supported\nfor filesystems with "
1151 "the meta_bg feature enabled.\n"),
1152 stderr);
1153 return 1;
1154 }
1155 }
1156
1157 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1158 int error;
1159
1160 if ((mount_flags & EXT2_MF_MOUNTED) ||
1161 (mount_flags & EXT2_MF_READONLY)) {
1162 fputs(_("The multiple mount protection feature can't\n"
1163 "be set if the filesystem is mounted or\n"
1164 "read-only.\n"), stderr);
1165 return 1;
1166 }
1167
1168 error = ext2fs_mmp_init(fs);
1169 if (error) {
1170 fputs(_("\nError while enabling multiple mount "
1171 "protection feature."), stderr);
1172 return 1;
1173 }
1174
1175 /*
1176 * We want to update group desc with the new free blocks count
1177 */
1178 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1179
1180 printf(_("Multiple mount protection has been enabled "
1181 "with update interval %ds.\n"),
1182 sb->s_mmp_update_interval);
1183 }
1184
1185 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1186 int error;
1187
1188 if (mount_flags & EXT2_MF_READONLY) {
1189 fputs(_("The multiple mount protection feature cannot\n"
1190 "be disabled if the filesystem is readonly.\n"),
1191 stderr);
1192 return 1;
1193 }
1194
1195 error = ext2fs_read_bitmaps(fs);
1196 if (error) {
1197 fputs(_("Error while reading bitmaps\n"), stderr);
1198 return 1;
1199 }
1200
1201 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1202 if (error) {
1203 struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1204
1205 if (error == EXT2_ET_MMP_MAGIC_INVALID)
1206 printf(_("Magic number in MMP block does not "
1207 "match. expected: %x, actual: %x\n"),
1208 EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1209 else
1210 com_err(program_name, error, "%s",
1211 _("while reading MMP block."));
1212 goto mmp_error;
1213 }
1214
1215 /* We need to force out the group descriptors as well */
1216 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1217 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1218 mmp_error:
1219 sb->s_mmp_block = 0;
1220 sb->s_mmp_update_interval = 0;
1221 }
1222
1223 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1224 /*
1225 * If adding a journal flag, let the create journal
1226 * code below handle setting the flag and creating the
1227 * journal. We supply a default size if necessary.
1228 */
1229 if (!journal_size)
1230 journal_size = -1;
1231 ext2fs_clear_feature_journal(sb);
1232 }
1233
1234 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1235 if (!sb->s_def_hash_version)
1236 sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1237 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1238 uuid_generate((unsigned char *) sb->s_hash_seed);
1239 }
1240
1241 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX) &&
1242 ext2fs_has_feature_metadata_csum(sb)) {
1243 if (check_fsck_needed(fs,
1244 _("Disabling directory index on filesystem with "
1245 "checksums could take some time.")))
1246 return 1;
1247 if (mount_flags & EXT2_MF_MOUNTED) {
1248 fputs(_("Cannot disable dir_index on a mounted "
1249 "filesystem!\n"), stderr);
1250 exit(1);
1251 }
1252 /*
1253 * Clearing dir_index on checksummed filesystem requires
1254 * rewriting all directories to update checksums.
1255 */
1256 rewrite_checksums |= REWRITE_DIR_FL;
1257 }
1258
1259 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1260 if (ext2fs_check_desc(fs)) {
1261 fputs(_("Clearing the flex_bg flag would "
1262 "cause the the filesystem to be\n"
1263 "inconsistent.\n"), stderr);
1264 return 1;
1265 }
1266 }
1267
1268 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1269 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1270 if ((mount_flags & EXT2_MF_MOUNTED) &&
1271 !(mount_flags & EXT2_MF_READONLY)) {
1272 fputs(_("The huge_file feature may only be "
1273 "cleared when the filesystem is\n"
1274 "unmounted or mounted "
1275 "read-only.\n"), stderr);
1276 return 1;
1277 }
1278 }
1279
1280 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1281 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1282 if (check_fsck_needed(fs,
1283 _("Enabling checksums could take some time.")))
1284 return 1;
1285 if (mount_flags & EXT2_MF_MOUNTED) {
1286 fputs(_("Cannot enable metadata_csum on a mounted "
1287 "filesystem!\n"), stderr);
1288 return 1;
1289 }
1290 if (!ext2fs_has_feature_extents(fs->super))
1291 printf("%s",
1292 _("Extents are not enabled. The file extent "
1293 "tree can be checksummed, whereas block maps "
1294 "cannot. Not enabling extents reduces the "
1295 "coverage of metadata checksumming. "
1296 "Re-run with -O extent to rectify.\n"));
1297 if (!ext2fs_has_feature_64bit(fs->super))
1298 printf("%s",
1299 _("64-bit filesystem support is not enabled. "
1300 "The larger fields afforded by this feature "
1301 "enable full-strength checksumming. "
1302 "Run resize2fs -b to rectify.\n"));
1303 rewrite_checksums = REWRITE_ALL;
1304 /* metadata_csum supersedes uninit_bg */
1305 ext2fs_clear_feature_gdt_csum(fs->super);
1306
1307 /* if uninit_bg was previously off, rewrite group desc */
1308 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1309 EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1310 enable_uninit_bg(fs);
1311
1312 /*
1313 * Since metadata_csum supersedes uninit_bg, pretend like
1314 * uninit_bg has been off all along.
1315 */
1316 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1317 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1318 }
1319
1320 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1321 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1322 __u32 test_features[3];
1323
1324 if (check_fsck_needed(fs,
1325 _("Disabling checksums could take some time.")))
1326 return 1;
1327 if (mount_flags & EXT2_MF_MOUNTED) {
1328 fputs(_("Cannot disable metadata_csum on a mounted "
1329 "filesystem!\n"), stderr);
1330 return 1;
1331 }
1332 rewrite_checksums = REWRITE_ALL;
1333
1334 /* Enable uninit_bg unless the user expressly turned it off */
1335 memcpy(test_features, old_features, sizeof(test_features));
1336 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1337 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1338 e2p_edit_feature2(features, test_features, ok_features,
1339 clear_ok_features, NULL, NULL);
1340 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1341 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1342 ext2fs_set_feature_gdt_csum(fs->super);
1343
1344 /*
1345 * If we're turning off metadata_csum and not turning on
1346 * uninit_bg, rewrite group desc.
1347 */
1348 if (!ext2fs_has_feature_gdt_csum(fs->super)) {
1349 err = disable_uninit_bg(fs,
1350 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1351 if (err)
1352 return 1;
1353 } else
1354 /*
1355 * metadata_csum previously provided uninit_bg, so if
1356 * we're also setting the uninit_bg feature bit,
1357 * pretend like it was previously enabled. Checksums
1358 * will be rewritten with crc16 later.
1359 */
1360 old_features[E2P_FEATURE_RO_INCOMPAT] |=
1361 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1362 fs->super->s_checksum_seed = 0;
1363 ext2fs_clear_feature_csum_seed(fs->super);
1364 }
1365
1366 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1367 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1368 if (mount_flags & EXT2_MF_MOUNTED) {
1369 fputs(_("Cannot enable uninit_bg on a mounted "
1370 "filesystem!\n"), stderr);
1371 return 1;
1372 }
1373
1374 /* Do not enable uninit_bg when metadata_csum enabled */
1375 if (ext2fs_has_feature_metadata_csum(fs->super))
1376 ext2fs_clear_feature_gdt_csum(fs->super);
1377 else
1378 enable_uninit_bg(fs);
1379 }
1380
1381 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1382 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1383 if (mount_flags & EXT2_MF_MOUNTED) {
1384 fputs(_("Cannot disable uninit_bg on a mounted "
1385 "filesystem!\n"), stderr);
1386 return 1;
1387 }
1388
1389 err = disable_uninit_bg(fs,
1390 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1391 if (err)
1392 return 1;
1393 }
1394
1395 /*
1396 * We don't actually toggle 64bit; resize2fs does that. But this
1397 * must come after the metadata_csum feature_on so that it won't
1398 * complain about the lack of 64bit.
1399 */
1400 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1401 EXT4_FEATURE_INCOMPAT_64BIT)) {
1402 if (mount_flags & EXT2_MF_MOUNTED) {
1403 fprintf(stderr, _("Cannot enable 64-bit mode "
1404 "while mounted!\n"));
1405 return 1;
1406 }
1407 ext2fs_clear_feature_64bit(sb);
1408 feature_64bit = 1;
1409 }
1410 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1411 EXT4_FEATURE_INCOMPAT_64BIT)) {
1412 if (mount_flags & EXT2_MF_MOUNTED) {
1413 fprintf(stderr, _("Cannot disable 64-bit mode "
1414 "while mounted!\n"));
1415 return 1;
1416 }
1417 ext2fs_set_feature_64bit(sb);
1418 feature_64bit = -1;
1419 }
1420
1421 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1422 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1423 /*
1424 * Set the Q_flag here and handle the quota options in the code
1425 * below.
1426 */
1427 if (!Q_flag) {
1428 Q_flag = 1;
1429 /* Enable usr/grp quota by default */
1430 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1431 if (qtype != PRJQUOTA)
1432 quota_enable[qtype] = QOPT_ENABLE;
1433 else
1434 quota_enable[qtype] = QOPT_DISABLE;
1435 }
1436 }
1437 ext2fs_clear_feature_quota(sb);
1438 }
1439
1440 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1441 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1442 if (fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1443 fprintf(stderr, _("Cannot enable project feature; "
1444 "inode size too small.\n"));
1445 return 1;
1446 }
1447 Q_flag = 1;
1448 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1449 }
1450
1451 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1452 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1453 Q_flag = 1;
1454 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1455 }
1456
1457 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1458 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1459 /*
1460 * Set the Q_flag here and handle the quota options in the code
1461 * below.
1462 */
1463 if (Q_flag)
1464 fputs(_("\nWarning: '^quota' option overrides '-Q'"
1465 "arguments.\n"), stderr);
1466 Q_flag = 1;
1467 /* Disable all quota by default */
1468 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1469 quota_enable[qtype] = QOPT_DISABLE;
1470 }
1471
1472 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1473 fs->super->s_encrypt_algos[0] =
1474 EXT4_ENCRYPTION_MODE_AES_256_XTS;
1475 fs->super->s_encrypt_algos[1] =
1476 EXT4_ENCRYPTION_MODE_AES_256_CTS;
1477 }
1478
1479 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_CASEFOLD)) {
1480 if (mount_flags & EXT2_MF_MOUNTED) {
1481 fputs(_("The casefold feature may only be enabled when "
1482 "the filesystem is unmounted.\n"), stderr);
1483 return 1;
1484 }
1485 fs->super->s_encoding = EXT4_ENC_UTF8_12_1;
1486 fs->super->s_encoding_flags = e2p_get_encoding_flags(EXT4_ENC_UTF8_12_1);
1487 enabling_casefold = 1;
1488 }
1489
1490 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1491 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1492 if (!ext2fs_has_feature_metadata_csum(sb)) {
1493 fputs(_("Setting feature 'metadata_csum_seed' "
1494 "is only supported\non filesystems with "
1495 "the metadata_csum feature enabled.\n"),
1496 stderr);
1497 return 1;
1498 }
1499 try_confirm_csum_seed_support();
1500 fs->super->s_checksum_seed = fs->csum_seed;
1501 }
1502
1503 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1504 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1505 __le32 uuid_seed;
1506
1507 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1508 sizeof(fs->super->s_uuid));
1509 if (fs->super->s_checksum_seed != uuid_seed) {
1510 if (mount_flags & (EXT2_MF_BUSY|EXT2_MF_MOUNTED)) {
1511 fputs(_("UUID has changed since enabling "
1512 "metadata_csum. Filesystem must be unmounted "
1513 "\nto safely rewrite all metadata to match the new UUID.\n"),
1514 stderr);
1515 return 1;
1516 }
1517 if (check_fsck_needed(fs, _("Recalculating checksums "
1518 "could take some time.")))
1519 return 1;
1520 rewrite_checksums = REWRITE_ALL;
1521 }
1522 }
1523
1524 if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1525 (sb->s_feature_compat || sb->s_feature_ro_compat ||
1526 sb->s_feature_incompat))
1527 ext2fs_update_dynamic_rev(fs);
1528
1529 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1530 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1531 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1532 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1533 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1534 EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1535 FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1536 EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1537 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1538 EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1539 request_fsck_afterwards(fs);
1540
1541 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1542 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1543 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1544 ext2fs_mark_super_dirty(fs);
1545
1546 return 0;
1547 }
1548
1549 /*
1550 * Add a journal to the filesystem.
1551 */
add_journal(ext2_filsys fs)1552 static int add_journal(ext2_filsys fs)
1553 {
1554 struct ext2fs_journal_params jparams;
1555 errcode_t retval;
1556 ext2_filsys jfs;
1557 io_manager io_ptr;
1558
1559 if (ext2fs_has_feature_journal(fs->super)) {
1560 fputs(_("The filesystem already has a journal.\n"), stderr);
1561 goto err;
1562 }
1563 if (journal_device) {
1564 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1565 NULL))
1566 proceed_question(-1);
1567 check_mount(journal_device, 0, _("journal"));
1568 #ifdef CONFIG_TESTIO_DEBUG
1569 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1570 io_ptr = test_io_manager;
1571 test_io_backing_manager = unix_io_manager;
1572 } else
1573 #endif
1574 io_ptr = unix_io_manager;
1575 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1576 EXT2_FLAG_JOURNAL_DEV_OK, 0,
1577 fs->blocksize, io_ptr, &jfs);
1578 if (retval) {
1579 com_err(program_name, retval,
1580 _("\n\twhile trying to open journal on %s\n"),
1581 journal_device);
1582 goto err;
1583 }
1584 printf(_("Creating journal on device %s: "),
1585 journal_device);
1586 fflush(stdout);
1587
1588 retval = ext2fs_add_journal_device(fs, jfs);
1589 ext2fs_close_free(&jfs);
1590 if (retval) {
1591 com_err(program_name, retval,
1592 _("while adding filesystem to journal on %s"),
1593 journal_device);
1594 goto err;
1595 }
1596 fputs(_("done\n"), stdout);
1597 } else if (journal_size) {
1598 fputs(_("Creating journal inode: "), stdout);
1599 fflush(stdout);
1600 figure_journal_size(&jparams, journal_size, journal_fc_size, fs);
1601
1602 if (journal_location_string)
1603 journal_location =
1604 parse_num_blocks2(journal_location_string,
1605 fs->super->s_log_block_size);
1606 retval = ext2fs_add_journal_inode3(fs, &jparams,
1607 journal_location,
1608 journal_flags);
1609 if (retval) {
1610 fprintf(stderr, "\n");
1611 com_err(program_name, retval, "%s",
1612 _("\n\twhile trying to create journal file"));
1613 return retval;
1614 } else
1615 fputs(_("done\n"), stdout);
1616 /*
1617 * If the filesystem wasn't mounted, we need to force
1618 * the block group descriptors out.
1619 */
1620 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1621 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1622 }
1623 print_check_message(fs->super->s_max_mnt_count,
1624 fs->super->s_checkinterval);
1625 return 0;
1626
1627 err:
1628 free(journal_device);
1629 return 1;
1630 }
1631
handle_quota_options(ext2_filsys fs)1632 static int handle_quota_options(ext2_filsys fs)
1633 {
1634 errcode_t retval;
1635 quota_ctx_t qctx;
1636 ext2_ino_t qf_ino;
1637 enum quota_type qtype;
1638 unsigned int qtype_bits = 0;
1639 int need_dirty = 0;
1640
1641 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1642 if (quota_enable[qtype] != 0)
1643 break;
1644 if (qtype == MAXQUOTAS)
1645 /* Nothing to do. */
1646 return 0;
1647
1648 if (quota_enable[PRJQUOTA] == QOPT_ENABLE &&
1649 fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1650 fprintf(stderr, _("Cannot enable project quota; "
1651 "inode size too small.\n"));
1652 return 1;
1653 }
1654
1655 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1656 if (quota_enable[qtype] == QOPT_ENABLE)
1657 qtype_bits |= 1 << qtype;
1658 }
1659
1660 retval = quota_init_context(&qctx, fs, qtype_bits);
1661 if (retval) {
1662 com_err(program_name, retval,
1663 _("while initializing quota context in support library"));
1664 return 1;
1665 }
1666
1667 if (qtype_bits)
1668 quota_compute_usage(qctx);
1669
1670 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1671 if (quota_enable[qtype] == QOPT_ENABLE &&
1672 *quota_sb_inump(fs->super, qtype) == 0) {
1673 if ((qf_ino = quota_file_exists(fs, qtype)) > 0) {
1674 retval = quota_update_limits(qctx, qf_ino,
1675 qtype);
1676 if (retval) {
1677 com_err(program_name, retval,
1678 _("while updating quota limits (%d)"),
1679 qtype);
1680 quota_errout:
1681 quota_release_context(&qctx);
1682 return 1;
1683 }
1684 }
1685 retval = quota_write_inode(qctx, 1 << qtype);
1686 if (retval) {
1687 com_err(program_name, retval,
1688 _("while writing quota file (%d)"),
1689 qtype);
1690 goto quota_errout;
1691 }
1692 /* Enable Quota feature if one of quota enabled */
1693 if (!ext2fs_has_feature_quota(fs->super)) {
1694 ext2fs_set_feature_quota(fs->super);
1695 need_dirty = 1;
1696 }
1697 if (qtype == PRJQUOTA &&
1698 !ext2fs_has_feature_project(fs->super)) {
1699 ext2fs_set_feature_project(fs->super);
1700 need_dirty = 1;
1701 }
1702 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1703 retval = quota_remove_inode(fs, qtype);
1704 if (retval) {
1705 com_err(program_name, retval,
1706 _("while removing quota file (%d)"),
1707 qtype);
1708 goto quota_errout;
1709 }
1710 if (qtype == PRJQUOTA) {
1711 ext2fs_clear_feature_project(fs->super);
1712 need_dirty = 1;
1713 }
1714 }
1715 }
1716
1717 quota_release_context(&qctx);
1718 /* Clear Quota feature if all quota types disabled. */
1719 if (!qtype_bits) {
1720 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1721 if (*quota_sb_inump(fs->super, qtype))
1722 break;
1723 if (qtype == MAXQUOTAS) {
1724 ext2fs_clear_feature_quota(fs->super);
1725 need_dirty = 1;
1726 }
1727
1728 }
1729 if (need_dirty)
1730 ext2fs_mark_super_dirty(fs);
1731 return 0;
1732 }
1733
option_handle_function(char * token)1734 static int option_handle_function(char *token)
1735 {
1736 if (strncmp(token, "usr", 3) == 0) {
1737 quota_enable[USRQUOTA] = QOPT_ENABLE;
1738 } else if (strncmp(token, "^usr", 4) == 0) {
1739 quota_enable[USRQUOTA] = QOPT_DISABLE;
1740 } else if (strncmp(token, "grp", 3) == 0) {
1741 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1742 } else if (strncmp(token, "^grp", 4) == 0) {
1743 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1744 } else if (strncmp(token, "prj", 3) == 0) {
1745 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1746 } else if (strncmp(token, "^prj", 4) == 0) {
1747 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1748 } else {
1749 fputs(_("\nBad quota options specified.\n\n"
1750 "Following valid quota options are available "
1751 "(pass by separating with comma):\n"
1752 "\t[^]usr[quota]\n"
1753 "\t[^]grp[quota]\n"
1754 "\t[^]prj[quota]\n"
1755 "\n\n"), stderr);
1756 return 1;
1757 }
1758 return 0;
1759 }
1760
parse_e2label_options(int argc,char ** argv)1761 static void parse_e2label_options(int argc, char ** argv)
1762 {
1763 if ((argc < 2) || (argc > 3)) {
1764 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1765 exit(1);
1766 }
1767 io_options = strchr(argv[1], '?');
1768 if (io_options)
1769 *io_options++ = 0;
1770 device_name = blkid_get_devname(NULL, argv[1], NULL);
1771 if (!device_name) {
1772 com_err("e2label", 0, _("Unable to resolve '%s'"),
1773 argv[1]);
1774 exit(1);
1775 }
1776 open_flag = EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_SUPER_ONLY;
1777 if (argc == 3) {
1778 open_flag |= EXT2_FLAG_RW;
1779 L_flag = 1;
1780 new_label = argv[2];
1781 } else
1782 print_label++;
1783 }
1784
parse_time(char * str)1785 static time_t parse_time(char *str)
1786 {
1787 struct tm ts;
1788
1789 if (strcmp(str, "now") == 0) {
1790 return (time(0));
1791 }
1792 memset(&ts, 0, sizeof(ts));
1793 #ifdef HAVE_STRPTIME
1794 strptime(str, "%Y%m%d%H%M%S", &ts);
1795 #else
1796 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1797 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1798 ts.tm_year -= 1900;
1799 ts.tm_mon -= 1;
1800 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1801 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1802 ts.tm_min > 59 || ts.tm_sec > 61)
1803 ts.tm_mday = 0;
1804 #endif
1805 if (ts.tm_mday == 0) {
1806 com_err(program_name, 0,
1807 _("Couldn't parse date/time specifier: %s"),
1808 str);
1809 usage();
1810 }
1811 ts.tm_isdst = -1;
1812 return (mktime(&ts));
1813 }
1814
parse_tune2fs_options(int argc,char ** argv)1815 static void parse_tune2fs_options(int argc, char **argv)
1816 {
1817 int c;
1818 char *tmp;
1819 struct group *gr;
1820 struct passwd *pw;
1821 int ret;
1822 char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1823
1824 open_flag = 0;
1825 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1826 while ((c = getopt(argc, argv, optstring)) != EOF)
1827 switch (c) {
1828 case 'c':
1829 open_flag = EXT2_FLAG_RW;
1830 c_flag = 1;
1831 if (strcmp(optarg, "random") == 0) {
1832 max_mount_count = 65536;
1833 break;
1834 }
1835 max_mount_count = strtol(optarg, &tmp, 0);
1836 if (*tmp || max_mount_count > 16000 ||
1837 max_mount_count < -16000) {
1838 com_err(program_name, 0,
1839 _("bad mounts count - %s"),
1840 optarg);
1841 usage();
1842 }
1843 if (max_mount_count == 0)
1844 max_mount_count = -1;
1845 break;
1846 case 'C':
1847 mount_count = strtoul(optarg, &tmp, 0);
1848 if (*tmp || mount_count > 16000) {
1849 com_err(program_name, 0,
1850 _("bad mounts count - %s"),
1851 optarg);
1852 usage();
1853 }
1854 C_flag = 1;
1855 open_flag = EXT2_FLAG_RW;
1856 break;
1857 case 'e':
1858 if (strcmp(optarg, "continue") == 0)
1859 errors = EXT2_ERRORS_CONTINUE;
1860 else if (strcmp(optarg, "remount-ro") == 0)
1861 errors = EXT2_ERRORS_RO;
1862 else if (strcmp(optarg, "panic") == 0)
1863 errors = EXT2_ERRORS_PANIC;
1864 else {
1865 com_err(program_name, 0,
1866 _("bad error behavior - %s"),
1867 optarg);
1868 usage();
1869 }
1870 e_flag = 1;
1871 open_flag = EXT2_FLAG_RW;
1872 break;
1873 case 'E':
1874 extended_cmd = optarg;
1875 open_flag |= EXT2_FLAG_RW;
1876 break;
1877 case 'f': /* Force */
1878 f_flag++;
1879 break;
1880 case 'g':
1881 resgid = strtoul(optarg, &tmp, 0);
1882 if (*tmp) {
1883 gr = getgrnam(optarg);
1884 if (gr == NULL)
1885 tmp = optarg;
1886 else {
1887 resgid = gr->gr_gid;
1888 *tmp = 0;
1889 }
1890 }
1891 if (*tmp) {
1892 com_err(program_name, 0,
1893 _("bad gid/group name - %s"),
1894 optarg);
1895 usage();
1896 }
1897 g_flag = 1;
1898 open_flag = EXT2_FLAG_RW;
1899 break;
1900 case 'i':
1901 interval = strtoul(optarg, &tmp, 0);
1902 switch (*tmp) {
1903 case 's':
1904 tmp++;
1905 break;
1906 case '\0':
1907 case 'd':
1908 case 'D': /* days */
1909 interval *= 86400;
1910 if (*tmp != '\0')
1911 tmp++;
1912 break;
1913 case 'm':
1914 case 'M': /* months! */
1915 interval *= 86400 * 30;
1916 tmp++;
1917 break;
1918 case 'w':
1919 case 'W': /* weeks */
1920 interval *= 86400 * 7;
1921 tmp++;
1922 break;
1923 }
1924 if (*tmp) {
1925 com_err(program_name, 0,
1926 _("bad interval - %s"), optarg);
1927 usage();
1928 }
1929 i_flag = 1;
1930 open_flag = EXT2_FLAG_RW;
1931 break;
1932 case 'j':
1933 if (!journal_size)
1934 journal_size = -1;
1935 open_flag = EXT2_FLAG_RW;
1936 break;
1937 case 'J':
1938 parse_journal_opts(optarg);
1939 open_flag = EXT2_FLAG_RW;
1940 break;
1941 case 'l':
1942 l_flag = 1;
1943 break;
1944 case 'L':
1945 new_label = optarg;
1946 L_flag = 1;
1947 open_flag |= EXT2_FLAG_RW |
1948 EXT2_FLAG_JOURNAL_DEV_OK;
1949 break;
1950 case 'm':
1951 reserved_ratio = strtod(optarg, &tmp);
1952 if (*tmp || reserved_ratio > 50 ||
1953 reserved_ratio < 0) {
1954 com_err(program_name, 0,
1955 _("bad reserved block ratio - %s"),
1956 optarg);
1957 usage();
1958 }
1959 m_flag = 1;
1960 open_flag = EXT2_FLAG_RW;
1961 break;
1962 case 'M':
1963 new_last_mounted = optarg;
1964 M_flag = 1;
1965 open_flag = EXT2_FLAG_RW;
1966 break;
1967 case 'o':
1968 if (mntopts_cmd) {
1969 com_err(program_name, 0, "%s",
1970 _("-o may only be specified once"));
1971 usage();
1972 }
1973 mntopts_cmd = optarg;
1974 open_flag = EXT2_FLAG_RW;
1975 break;
1976 case 'O':
1977 if (features_cmd) {
1978 com_err(program_name, 0, "%s",
1979 _("-O may only be specified once"));
1980 usage();
1981 }
1982 features_cmd = optarg;
1983 open_flag = EXT2_FLAG_RW;
1984 break;
1985 case 'Q':
1986 Q_flag = 1;
1987 ret = parse_quota_opts(optarg, option_handle_function);
1988 if (ret)
1989 exit(1);
1990 open_flag = EXT2_FLAG_RW;
1991 break;
1992 case 'r':
1993 reserved_blocks = strtoul(optarg, &tmp, 0);
1994 if (*tmp) {
1995 com_err(program_name, 0,
1996 _("bad reserved blocks count - %s"),
1997 optarg);
1998 usage();
1999 }
2000 r_flag = 1;
2001 open_flag = EXT2_FLAG_RW;
2002 break;
2003 case 's': /* Deprecated */
2004 s_flag = atoi(optarg);
2005 open_flag = EXT2_FLAG_RW;
2006 break;
2007 case 'T':
2008 T_flag = 1;
2009 last_check_time = parse_time(optarg);
2010 open_flag = EXT2_FLAG_RW;
2011 break;
2012 case 'u':
2013 resuid = strtoul(optarg, &tmp, 0);
2014 if (*tmp) {
2015 pw = getpwnam(optarg);
2016 if (pw == NULL)
2017 tmp = optarg;
2018 else {
2019 resuid = pw->pw_uid;
2020 *tmp = 0;
2021 }
2022 }
2023 if (*tmp) {
2024 com_err(program_name, 0,
2025 _("bad uid/user name - %s"),
2026 optarg);
2027 usage();
2028 }
2029 u_flag = 1;
2030 open_flag = EXT2_FLAG_RW;
2031 break;
2032 case 'U':
2033 new_UUID = optarg;
2034 U_flag = 1;
2035 open_flag = EXT2_FLAG_RW |
2036 EXT2_FLAG_JOURNAL_DEV_OK;
2037 break;
2038 case 'I':
2039 new_inode_size = strtoul(optarg, &tmp, 0);
2040 if (*tmp) {
2041 com_err(program_name, 0,
2042 _("bad inode size - %s"),
2043 optarg);
2044 usage();
2045 }
2046 if (!((new_inode_size &
2047 (new_inode_size - 1)) == 0)) {
2048 com_err(program_name, 0,
2049 _("Inode size must be a "
2050 "power of two- %s"),
2051 optarg);
2052 usage();
2053 }
2054 open_flag = EXT2_FLAG_RW;
2055 I_flag = 1;
2056 break;
2057 case 'z':
2058 undo_file = optarg;
2059 break;
2060 default:
2061 usage();
2062 }
2063 if (optind < argc - 1 || optind == argc)
2064 usage();
2065 if (!open_flag && !l_flag)
2066 usage();
2067 io_options = strchr(argv[optind], '?');
2068 if (io_options)
2069 *io_options++ = 0;
2070 device_name = blkid_get_devname(NULL, argv[optind], NULL);
2071 if (!device_name) {
2072 com_err(program_name, 0, _("Unable to resolve '%s'"),
2073 argv[optind]);
2074 exit(1);
2075 }
2076 }
2077
2078 #ifdef CONFIG_BUILD_FINDFS
do_findfs(int argc,char ** argv)2079 void do_findfs(int argc, char **argv)
2080 {
2081 char *dev;
2082
2083 if ((argc != 2) ||
2084 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
2085 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
2086 exit(2);
2087 }
2088 dev = blkid_get_devname(NULL, argv[1], NULL);
2089 if (!dev) {
2090 com_err("findfs", 0, _("Unable to resolve '%s'"),
2091 argv[1]);
2092 exit(1);
2093 }
2094 puts(dev);
2095 exit(0);
2096 }
2097 #endif
2098
parse_extended_opts(ext2_filsys fs,const char * opts)2099 static int parse_extended_opts(ext2_filsys fs, const char *opts)
2100 {
2101 struct ext2_super_block *sb = fs->super;
2102 char *buf, *token, *next, *p, *arg;
2103 int len, hash_alg;
2104 int r_usage = 0;
2105 int encoding = 0;
2106 char *encoding_flags = NULL;
2107
2108 len = strlen(opts);
2109 buf = malloc(len+1);
2110 if (!buf) {
2111 fprintf(stderr, "%s",
2112 _("Couldn't allocate memory to parse options!\n"));
2113 return 1;
2114 }
2115 strcpy(buf, opts);
2116 for (token = buf; token && *token; token = next) {
2117 p = strchr(token, ',');
2118 next = 0;
2119 if (p) {
2120 *p = 0;
2121 next = p+1;
2122 }
2123 arg = strchr(token, '=');
2124 if (arg) {
2125 *arg = 0;
2126 arg++;
2127 }
2128 if (strcmp(token, "clear-mmp") == 0 ||
2129 strcmp(token, "clear_mmp") == 0) {
2130 clear_mmp = 1;
2131 } else if (strcmp(token, "mmp_update_interval") == 0) {
2132 unsigned long intv;
2133 if (!arg) {
2134 r_usage++;
2135 continue;
2136 }
2137 intv = strtoul(arg, &p, 0);
2138 if (*p) {
2139 fprintf(stderr,
2140 _("Invalid mmp_update_interval: %s\n"),
2141 arg);
2142 r_usage++;
2143 continue;
2144 }
2145 if (intv == 0) {
2146 intv = EXT4_MMP_UPDATE_INTERVAL;
2147 } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
2148 fprintf(stderr,
2149 _("mmp_update_interval too big: %lu\n"),
2150 intv);
2151 r_usage++;
2152 continue;
2153 }
2154 printf(P_("Setting multiple mount protection update "
2155 "interval to %lu second\n",
2156 "Setting multiple mount protection update "
2157 "interval to %lu seconds\n", intv),
2158 intv);
2159 sb->s_mmp_update_interval = intv;
2160 ext2fs_mark_super_dirty(fs);
2161 } else if (!strcmp(token, "force_fsck")) {
2162 sb->s_state |= EXT2_ERROR_FS;
2163 printf(_("Setting filesystem error flag to force fsck.\n"));
2164 ext2fs_mark_super_dirty(fs);
2165 } else if (!strcmp(token, "test_fs")) {
2166 sb->s_flags |= EXT2_FLAGS_TEST_FILESYS;
2167 printf("Setting test filesystem flag\n");
2168 ext2fs_mark_super_dirty(fs);
2169 } else if (!strcmp(token, "^test_fs")) {
2170 sb->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
2171 printf("Clearing test filesystem flag\n");
2172 ext2fs_mark_super_dirty(fs);
2173 } else if (strcmp(token, "stride") == 0) {
2174 if (!arg) {
2175 r_usage++;
2176 continue;
2177 }
2178 stride = strtoul(arg, &p, 0);
2179 if (*p) {
2180 fprintf(stderr,
2181 _("Invalid RAID stride: %s\n"),
2182 arg);
2183 r_usage++;
2184 continue;
2185 }
2186 stride_set = 1;
2187 } else if (strcmp(token, "stripe-width") == 0 ||
2188 strcmp(token, "stripe_width") == 0) {
2189 if (!arg) {
2190 r_usage++;
2191 continue;
2192 }
2193 stripe_width = strtoul(arg, &p, 0);
2194 if (*p) {
2195 fprintf(stderr,
2196 _("Invalid RAID stripe-width: %s\n"),
2197 arg);
2198 r_usage++;
2199 continue;
2200 }
2201 stripe_width_set = 1;
2202 } else if (strcmp(token, "hash_alg") == 0 ||
2203 strcmp(token, "hash-alg") == 0) {
2204 if (!arg) {
2205 r_usage++;
2206 continue;
2207 }
2208 hash_alg = e2p_string2hash(arg);
2209 if (hash_alg < 0) {
2210 fprintf(stderr,
2211 _("Invalid hash algorithm: %s\n"),
2212 arg);
2213 r_usage++;
2214 continue;
2215 }
2216 sb->s_def_hash_version = hash_alg;
2217 printf(_("Setting default hash algorithm "
2218 "to %s (%d)\n"),
2219 arg, hash_alg);
2220 ext2fs_mark_super_dirty(fs);
2221 } else if (!strcmp(token, "mount_opts")) {
2222 if (!arg) {
2223 r_usage++;
2224 continue;
2225 }
2226 if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
2227 fprintf(stderr,
2228 "Extended mount options too long\n");
2229 continue;
2230 }
2231 ext_mount_opts = strdup(arg);
2232 } else if (!strcmp(token, "encoding")) {
2233 if (!arg) {
2234 r_usage++;
2235 continue;
2236 }
2237 if (mount_flags & EXT2_MF_MOUNTED) {
2238 fputs(_("The casefold feature may only be enabled when "
2239 "the filesystem is unmounted.\n"), stderr);
2240 r_usage++;
2241 continue;
2242 }
2243 if (ext2fs_has_feature_casefold(sb) && !enabling_casefold) {
2244 fprintf(stderr, _("Cannot alter existing encoding\n"));
2245 r_usage++;
2246 continue;
2247 }
2248 encoding = e2p_str2encoding(arg);
2249 if (encoding < 0) {
2250 fprintf(stderr, _("Invalid encoding: %s\n"), arg);
2251 r_usage++;
2252 continue;
2253 }
2254 enabling_casefold = 1;
2255 sb->s_encoding = encoding;
2256 printf(_("Setting encoding to '%s'\n"), arg);
2257 sb->s_encoding_flags =
2258 e2p_get_encoding_flags(sb->s_encoding);
2259 } else if (!strcmp(token, "encoding_flags")) {
2260 if (!arg) {
2261 r_usage++;
2262 continue;
2263 }
2264 encoding_flags = arg;
2265 } else
2266 r_usage++;
2267 }
2268
2269 if (encoding > 0 && !r_usage) {
2270 sb->s_encoding_flags =
2271 e2p_get_encoding_flags(sb->s_encoding);
2272
2273 if (encoding_flags &&
2274 e2p_str2encoding_flags(sb->s_encoding, encoding_flags,
2275 &sb->s_encoding_flags)) {
2276 fprintf(stderr, _("error: Invalid encoding flag: %s\n"),
2277 encoding_flags);
2278 r_usage++;
2279 } else if (encoding_flags)
2280 printf(_("Setting encoding_flags to '%s'\n"),
2281 encoding_flags);
2282 ext2fs_set_feature_casefold(sb);
2283 ext2fs_mark_super_dirty(fs);
2284 } else if (encoding_flags && !r_usage) {
2285 fprintf(stderr, _("error: An encoding must be explicitly "
2286 "specified when passing encoding-flags\n"));
2287 r_usage++;
2288 }
2289 if (r_usage) {
2290 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
2291 "Extended options are separated by commas, "
2292 "and may take an argument which\n"
2293 "\tis set off by an equals ('=') sign.\n\n"
2294 "Valid extended options are:\n"
2295 "\tclear_mmp\n"
2296 "\thash_alg=<hash algorithm>\n"
2297 "\tmount_opts=<extended default mount options>\n"
2298 "\tmmp_update_interval=<mmp update interval in seconds>\n"
2299 "\tstride=<RAID per-disk chunk size in blocks>\n"
2300 "\tstripe_width=<RAID stride*data disks in blocks>\n"
2301 "\tforce_fsck\n"
2302 "\ttest_fs\n"
2303 "\t^test_fs\n"
2304 "\tencoding=<encoding>\n"
2305 "\tencoding_flags=<flags>\n"));
2306 free(buf);
2307 return 1;
2308 }
2309 free(buf);
2310
2311 return 0;
2312 }
2313
2314 /*
2315 * Fill in the block bitmap bmap with the information regarding the
2316 * blocks to be moved
2317 */
get_move_bitmaps(ext2_filsys fs,int new_ino_blks_per_grp,ext2fs_block_bitmap bmap)2318 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2319 ext2fs_block_bitmap bmap)
2320 {
2321 dgrp_t i;
2322 int retval;
2323 ext2_badblocks_list bb_list = 0;
2324 blk64_t j, needed_blocks = 0;
2325 blk64_t start_blk, end_blk;
2326
2327 retval = ext2fs_read_bb_inode(fs, &bb_list);
2328 if (retval)
2329 return retval;
2330
2331 for (i = 0; i < fs->group_desc_count; i++) {
2332 start_blk = ext2fs_inode_table_loc(fs, i) +
2333 fs->inode_blocks_per_group;
2334
2335 end_blk = ext2fs_inode_table_loc(fs, i) +
2336 new_ino_blks_per_grp;
2337
2338 for (j = start_blk; j < end_blk; j++) {
2339 if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2340 /*
2341 * IF the block is a bad block we fail
2342 */
2343 if (ext2fs_badblocks_list_test(bb_list, j)) {
2344 ext2fs_badblocks_list_free(bb_list);
2345 return ENOSPC;
2346 }
2347
2348 ext2fs_mark_block_bitmap2(bmap, j);
2349 } else {
2350 /*
2351 * We are going to use this block for
2352 * inode table. So mark them used.
2353 */
2354 ext2fs_mark_block_bitmap2(fs->block_map, j);
2355 }
2356 }
2357 needed_blocks += end_blk - start_blk;
2358 }
2359
2360 ext2fs_badblocks_list_free(bb_list);
2361 if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2362 return ENOSPC;
2363
2364 return 0;
2365 }
2366
ext2fs_is_meta_block(ext2_filsys fs,blk64_t blk)2367 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2368 {
2369 dgrp_t group;
2370 group = ext2fs_group_of_blk2(fs, blk);
2371 if (ext2fs_block_bitmap_loc(fs, group) == blk)
2372 return 1;
2373 if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2374 return 1;
2375 return 0;
2376 }
2377
ext2fs_is_block_in_group(ext2_filsys fs,dgrp_t group,blk64_t blk)2378 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2379 {
2380 blk64_t start_blk, end_blk;
2381 start_blk = fs->super->s_first_data_block +
2382 EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2383 /*
2384 * We cannot get new block beyond end_blk for for the last block group
2385 * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2386 */
2387 end_blk = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2388 if (blk >= start_blk && blk <= end_blk)
2389 return 1;
2390 return 0;
2391 }
2392
move_block(ext2_filsys fs,ext2fs_block_bitmap bmap)2393 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2394 {
2395
2396 char *buf;
2397 dgrp_t group = 0;
2398 errcode_t retval;
2399 int meta_data = 0;
2400 blk64_t blk, new_blk, goal;
2401 struct blk_move *bmv;
2402
2403 retval = ext2fs_get_mem(fs->blocksize, &buf);
2404 if (retval)
2405 return retval;
2406
2407 for (new_blk = blk = fs->super->s_first_data_block;
2408 blk < ext2fs_blocks_count(fs->super); blk++) {
2409 if (!ext2fs_test_block_bitmap2(bmap, blk))
2410 continue;
2411
2412 if (ext2fs_is_meta_block(fs, blk)) {
2413 /*
2414 * If the block is mapping a fs meta data block
2415 * like group desc/block bitmap/inode bitmap. We
2416 * should find a block in the same group and fix
2417 * the respective fs metadata pointers. Otherwise
2418 * fail
2419 */
2420 group = ext2fs_group_of_blk2(fs, blk);
2421 goal = ext2fs_group_first_block2(fs, group);
2422 meta_data = 1;
2423
2424 } else {
2425 goal = new_blk;
2426 }
2427 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2428 if (retval)
2429 goto err_out;
2430
2431 /* new fs meta data block should be in the same group */
2432 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2433 retval = ENOSPC;
2434 goto err_out;
2435 }
2436
2437 /* Mark this block as allocated */
2438 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2439
2440 /* Add it to block move list */
2441 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2442 if (retval)
2443 goto err_out;
2444
2445 bmv->old_loc = blk;
2446 bmv->new_loc = new_blk;
2447
2448 list_add(&(bmv->list), &blk_move_list);
2449
2450 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2451 if (retval)
2452 goto err_out;
2453
2454 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2455 if (retval)
2456 goto err_out;
2457 }
2458
2459 err_out:
2460 ext2fs_free_mem(&buf);
2461 return retval;
2462 }
2463
translate_block(blk64_t blk)2464 static blk64_t translate_block(blk64_t blk)
2465 {
2466 struct list_head *entry;
2467 struct blk_move *bmv;
2468
2469 list_for_each(entry, &blk_move_list) {
2470 bmv = list_entry(entry, struct blk_move, list);
2471 if (bmv->old_loc == blk)
2472 return bmv->new_loc;
2473 }
2474
2475 return 0;
2476 }
2477
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)2478 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2479 blk64_t *block_nr,
2480 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2481 blk64_t ref_block EXT2FS_ATTR((unused)),
2482 int ref_offset EXT2FS_ATTR((unused)),
2483 void *priv_data)
2484 {
2485 int ret = 0;
2486 blk64_t new_blk;
2487 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2488
2489 if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2490 return 0;
2491 new_blk = translate_block(*block_nr);
2492 if (new_blk) {
2493 *block_nr = new_blk;
2494 /*
2495 * This will force the ext2fs_write_inode in the iterator
2496 */
2497 ret |= BLOCK_CHANGED;
2498 }
2499
2500 return ret;
2501 }
2502
inode_scan_and_fix(ext2_filsys fs,ext2fs_block_bitmap bmap)2503 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2504 {
2505 errcode_t retval = 0;
2506 ext2_ino_t ino;
2507 blk64_t blk;
2508 char *block_buf = 0;
2509 struct ext2_inode inode;
2510 ext2_inode_scan scan = NULL;
2511
2512 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2513 if (retval)
2514 return retval;
2515
2516 retval = ext2fs_open_inode_scan(fs, 0, &scan);
2517 if (retval)
2518 goto err_out;
2519
2520 while (1) {
2521 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2522 if (retval)
2523 goto err_out;
2524
2525 if (!ino)
2526 break;
2527
2528 if (inode.i_links_count == 0)
2529 continue; /* inode not in use */
2530
2531 /* FIXME!!
2532 * If we end up modifying the journal inode
2533 * the sb->s_jnl_blocks will differ. But a
2534 * subsequent e2fsck fixes that.
2535 * Do we need to fix this ??
2536 */
2537
2538 if (ext2fs_file_acl_block(fs, &inode) &&
2539 ext2fs_test_block_bitmap2(bmap,
2540 ext2fs_file_acl_block(fs, &inode))) {
2541 blk = translate_block(ext2fs_file_acl_block(fs,
2542 &inode));
2543 if (!blk)
2544 continue;
2545
2546 ext2fs_file_acl_block_set(fs, &inode, blk);
2547
2548 /*
2549 * Write the inode to disk so that inode table
2550 * resizing can work
2551 */
2552 retval = ext2fs_write_inode(fs, ino, &inode);
2553 if (retval)
2554 goto err_out;
2555 }
2556
2557 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2558 continue;
2559
2560 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2561 process_block, bmap);
2562 if (retval)
2563 goto err_out;
2564
2565 }
2566
2567 err_out:
2568 ext2fs_free_mem(&block_buf);
2569 ext2fs_close_inode_scan(scan);
2570
2571 return retval;
2572 }
2573
2574 /*
2575 * We need to scan for inode and block bitmaps that may need to be
2576 * moved. This can take place if the filesystem was formatted for
2577 * RAID arrays using the mke2fs's extended option "stride".
2578 */
group_desc_scan_and_fix(ext2_filsys fs,ext2fs_block_bitmap bmap)2579 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2580 {
2581 dgrp_t i;
2582 blk64_t blk, new_blk;
2583
2584 for (i = 0; i < fs->group_desc_count; i++) {
2585 blk = ext2fs_block_bitmap_loc(fs, i);
2586 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2587 new_blk = translate_block(blk);
2588 if (!new_blk)
2589 continue;
2590 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2591 }
2592
2593 blk = ext2fs_inode_bitmap_loc(fs, i);
2594 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2595 new_blk = translate_block(blk);
2596 if (!new_blk)
2597 continue;
2598 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2599 }
2600 }
2601 return 0;
2602 }
2603
expand_inode_table(ext2_filsys fs,unsigned long new_ino_size)2604 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2605 {
2606 dgrp_t i;
2607 blk64_t blk;
2608 errcode_t retval;
2609 int new_ino_blks_per_grp;
2610 unsigned int j;
2611 char *old_itable = NULL, *new_itable = NULL;
2612 char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2613 unsigned long old_ino_size;
2614 int old_itable_size, new_itable_size;
2615
2616 old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2617 old_ino_size = EXT2_INODE_SIZE(fs->super);
2618
2619 new_ino_blks_per_grp = ext2fs_div_ceil(
2620 EXT2_INODES_PER_GROUP(fs->super) *
2621 new_ino_size,
2622 fs->blocksize);
2623
2624 new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2625
2626 retval = ext2fs_get_mem(old_itable_size, &old_itable);
2627 if (retval)
2628 return retval;
2629
2630 retval = ext2fs_get_mem(new_itable_size, &new_itable);
2631 if (retval)
2632 goto err_out;
2633
2634 tmp_old_itable = old_itable;
2635 tmp_new_itable = new_itable;
2636
2637 for (i = 0; i < fs->group_desc_count; i++) {
2638 blk = ext2fs_inode_table_loc(fs, i);
2639 retval = io_channel_read_blk64(fs->io, blk,
2640 fs->inode_blocks_per_group, old_itable);
2641 if (retval)
2642 goto err_out;
2643
2644 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2645 memcpy(new_itable, old_itable, old_ino_size);
2646
2647 memset(new_itable+old_ino_size, 0,
2648 new_ino_size - old_ino_size);
2649
2650 new_itable += new_ino_size;
2651 old_itable += old_ino_size;
2652 }
2653
2654 /* reset the pointer */
2655 old_itable = tmp_old_itable;
2656 new_itable = tmp_new_itable;
2657
2658 retval = io_channel_write_blk64(fs->io, blk,
2659 new_ino_blks_per_grp, new_itable);
2660 if (retval)
2661 goto err_out;
2662 }
2663
2664 /* Update the meta data */
2665 fs->inode_blocks_per_group = new_ino_blks_per_grp;
2666 ext2fs_free_inode_cache(fs->icache);
2667 fs->icache = 0;
2668 fs->super->s_inode_size = new_ino_size;
2669
2670 err_out:
2671 if (old_itable)
2672 ext2fs_free_mem(&old_itable);
2673
2674 if (new_itable)
2675 ext2fs_free_mem(&new_itable);
2676
2677 return retval;
2678 }
2679
2680
2681 #define list_for_each_safe(pos, pnext, head) \
2682 for (pos = (head)->next, pnext = pos->next; pos != (head); \
2683 pos = pnext, pnext = pos->next)
2684
free_blk_move_list(void)2685 static void free_blk_move_list(void)
2686 {
2687 struct list_head *entry, *tmp;
2688 struct blk_move *bmv;
2689
2690 list_for_each_safe(entry, tmp, &blk_move_list) {
2691 bmv = list_entry(entry, struct blk_move, list);
2692 list_del(entry);
2693 ext2fs_free_mem(&bmv);
2694 }
2695 return;
2696 }
2697
resize_inode(ext2_filsys fs,unsigned long new_size)2698 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2699 {
2700 errcode_t retval;
2701 int new_ino_blks_per_grp;
2702 ext2fs_block_bitmap bmap;
2703
2704 retval = ext2fs_read_inode_bitmap(fs);
2705 if (retval) {
2706 fputs(_("Failed to read inode bitmap\n"), stderr);
2707 return retval;
2708 }
2709 retval = ext2fs_read_block_bitmap(fs);
2710 if (retval) {
2711 fputs(_("Failed to read block bitmap\n"), stderr);
2712 return retval;
2713 }
2714 INIT_LIST_HEAD(&blk_move_list);
2715
2716
2717 new_ino_blks_per_grp = ext2fs_div_ceil(
2718 EXT2_INODES_PER_GROUP(fs->super)*
2719 new_size,
2720 fs->blocksize);
2721
2722 /* We may change the file system.
2723 * Mark the file system as invalid so that
2724 * the user is prompted to run fsck.
2725 */
2726 fs->super->s_state &= ~EXT2_VALID_FS;
2727
2728 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2729 &bmap);
2730 if (retval) {
2731 fputs(_("Failed to allocate block bitmap when "
2732 "increasing inode size\n"), stderr);
2733 return retval;
2734 }
2735 retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2736 if (retval) {
2737 fputs(_("Not enough space to increase inode size \n"), stderr);
2738 goto err_out;
2739 }
2740 retval = move_block(fs, bmap);
2741 if (retval) {
2742 fputs(_("Failed to relocate blocks during inode resize \n"),
2743 stderr);
2744 goto err_out;
2745 }
2746 retval = inode_scan_and_fix(fs, bmap);
2747 if (retval)
2748 goto err_out_undo;
2749
2750 retval = group_desc_scan_and_fix(fs, bmap);
2751 if (retval)
2752 goto err_out_undo;
2753
2754 retval = expand_inode_table(fs, new_size);
2755 if (retval)
2756 goto err_out_undo;
2757
2758 ext2fs_calculate_summary_stats(fs, 1 /* super only */);
2759
2760 fs->super->s_state |= EXT2_VALID_FS;
2761 /* mark super block and block bitmap as dirty */
2762 ext2fs_mark_super_dirty(fs);
2763 ext2fs_mark_bb_dirty(fs);
2764
2765 err_out:
2766 free_blk_move_list();
2767 ext2fs_free_block_bitmap(bmap);
2768
2769 return retval;
2770
2771 err_out_undo:
2772 free_blk_move_list();
2773 ext2fs_free_block_bitmap(bmap);
2774 fputs(_("Error in resizing the inode size.\n"
2775 "Run e2undo to undo the "
2776 "file system changes. \n"), stderr);
2777
2778 return retval;
2779 }
2780
tune2fs_setup_tdb(const char * name,io_manager * io_ptr)2781 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2782 {
2783 errcode_t retval = 0;
2784 const char *tdb_dir;
2785 char *tdb_file = NULL;
2786 char *dev_name, *tmp_name;
2787
2788 /* (re)open a specific undo file */
2789 if (undo_file && undo_file[0] != 0) {
2790 retval = set_undo_io_backing_manager(*io_ptr);
2791 if (retval)
2792 goto err;
2793 *io_ptr = undo_io_manager;
2794 retval = set_undo_io_backup_file(undo_file);
2795 if (retval)
2796 goto err;
2797 printf(_("Overwriting existing filesystem; this can be undone "
2798 "using the command:\n"
2799 " e2undo %s %s\n\n"),
2800 undo_file, name);
2801 return retval;
2802 }
2803
2804 /*
2805 * Configuration via a conf file would be
2806 * nice
2807 */
2808 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2809 if (!tdb_dir)
2810 tdb_dir = "/var/lib/e2fsprogs";
2811
2812 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2813 access(tdb_dir, W_OK))
2814 return 0;
2815
2816 tmp_name = strdup(name);
2817 if (!tmp_name)
2818 goto errout;
2819 dev_name = basename(tmp_name);
2820 tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2821 if (!tdb_file) {
2822 free(tmp_name);
2823 goto errout;
2824 }
2825 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2826 free(tmp_name);
2827
2828 if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2829 retval = errno;
2830 com_err(program_name, retval,
2831 _("while trying to delete %s"), tdb_file);
2832 goto errout;
2833 }
2834
2835 retval = set_undo_io_backing_manager(*io_ptr);
2836 if (retval)
2837 goto errout;
2838 *io_ptr = undo_io_manager;
2839 retval = set_undo_io_backup_file(tdb_file);
2840 if (retval)
2841 goto errout;
2842 printf(_("Overwriting existing filesystem; this can be undone "
2843 "using the command:\n"
2844 " e2undo %s %s\n\n"),
2845 tdb_file, name);
2846
2847 free(tdb_file);
2848 return 0;
2849 errout:
2850 free(tdb_file);
2851 err:
2852 com_err("tune2fs", retval, "while trying to setup undo file\n");
2853 return retval;
2854 }
2855
2856 static int
fs_update_journal_user(struct ext2_super_block * sb,__u8 old_uuid[UUID_SIZE])2857 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2858 {
2859 int retval, nr_users, start;
2860 journal_superblock_t *jsb;
2861 ext2_filsys jfs;
2862 __u8 *j_uuid;
2863 char *journal_path;
2864 char uuid[UUID_STR_SIZE];
2865 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2866
2867 if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
2868 return 0;
2869
2870 uuid_unparse(sb->s_journal_uuid, uuid);
2871 journal_path = blkid_get_devname(NULL, "UUID", uuid);
2872 if (!journal_path)
2873 return 0;
2874
2875 retval = ext2fs_open2(journal_path, io_options,
2876 EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2877 0, 0, unix_io_manager, &jfs);
2878 if (retval) {
2879 com_err(program_name, retval,
2880 _("while trying to open %s"),
2881 journal_path);
2882 return retval;
2883 }
2884
2885 retval = get_journal_sb(jfs, buf);
2886 if (retval != 0) {
2887 if (retval == EXT2_ET_UNSUPP_FEATURE)
2888 fprintf(stderr, _("%s is not a journal device.\n"),
2889 journal_path);
2890 return retval;
2891 }
2892
2893 jsb = (journal_superblock_t *) buf;
2894 /* Find the filesystem UUID */
2895 nr_users = ntohl(jsb->s_nr_users);
2896 if (nr_users > JBD2_USERS_MAX) {
2897 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
2898 "is too high (%d).\n"), nr_users);
2899 return EXT2_ET_CORRUPT_JOURNAL_SB;
2900 }
2901
2902 j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2903 if (j_uuid == NULL) {
2904 fputs(_("Filesystem's UUID not found on journal device.\n"),
2905 stderr);
2906 return EXT2_ET_LOAD_EXT_JOURNAL;
2907 }
2908
2909 memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2910
2911 start = ext2fs_journal_sb_start(jfs->blocksize);
2912 /* Write back the journal superblock */
2913 retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2914 if (retval != 0) {
2915 com_err(program_name, retval,
2916 "while writing journal superblock.");
2917 return retval;
2918 }
2919
2920 ext2fs_close(jfs);
2921
2922 return 0;
2923 }
2924
2925 #ifndef BUILD_AS_LIB
main(int argc,char ** argv)2926 int main(int argc, char **argv)
2927 #else
2928 int tune2fs_main(int argc, char **argv)
2929 #endif /* BUILD_AS_LIB */
2930 {
2931 errcode_t retval;
2932 ext2_filsys fs;
2933 struct ext2_super_block *sb;
2934 io_manager io_ptr, io_ptr_orig = NULL;
2935 int rc = 0;
2936 char default_undo_file[1] = { 0 };
2937
2938 #ifdef ENABLE_NLS
2939 setlocale(LC_MESSAGES, "");
2940 setlocale(LC_CTYPE, "");
2941 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2942 textdomain(NLS_CAT_NAME);
2943 set_com_err_gettext(gettext);
2944 #endif
2945 if (argc && *argv)
2946 program_name = *argv;
2947 add_error_table(&et_ext2_error_table);
2948
2949 #ifdef CONFIG_BUILD_FINDFS
2950 if (strcmp(get_progname(argv[0]), "findfs") == 0)
2951 do_findfs(argc, argv);
2952 #endif
2953 if (strcmp(get_progname(argv[0]), "e2label") == 0)
2954 parse_e2label_options(argc, argv);
2955 else
2956 parse_tune2fs_options(argc, argv);
2957
2958 #ifdef CONFIG_TESTIO_DEBUG
2959 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2960 io_ptr = test_io_manager;
2961 test_io_backing_manager = unix_io_manager;
2962 } else
2963 #endif
2964 io_ptr = unix_io_manager;
2965
2966 retry_open:
2967 if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2968 open_flag |= EXT2_FLAG_SKIP_MMP;
2969
2970 open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_THREADS |
2971 EXT2_FLAG_JOURNAL_DEV_OK;
2972
2973 /* keep the filesystem struct around to dump MMP data */
2974 open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2975
2976 retval = ext2fs_open2(device_name, io_options, open_flag,
2977 0, 0, io_ptr, &fs);
2978 if (retval) {
2979 com_err(program_name, retval,
2980 _("while trying to open %s"),
2981 device_name);
2982 if (retval == EXT2_ET_MMP_FSCK_ON ||
2983 retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2984 dump_mmp_msg(fs->mmp_buf,
2985 _("If you are sure the filesystem "
2986 "is not in use on any node, run:\n"
2987 "'tune2fs -f -E clear_mmp {device}'\n"));
2988 else if (retval == EXT2_ET_MMP_FAILED)
2989 dump_mmp_msg(fs->mmp_buf, NULL);
2990 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2991 fprintf(stderr,
2992 _("MMP block magic is bad. Try to fix it by "
2993 "running:\n'e2fsck -f %s'\n"), device_name);
2994 else if (retval == EXT2_ET_BAD_MAGIC)
2995 check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2996 else if (retval != EXT2_ET_MMP_FAILED)
2997 fprintf(stderr, "%s",
2998 _("Couldn't find valid filesystem superblock.\n"));
2999
3000 ext2fs_free(fs);
3001 exit(1);
3002 }
3003 if (ext2fs_has_feature_journal_dev(fs->super)) {
3004 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
3005 ext2fs_free(fs);
3006 exit(1);
3007 }
3008 fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
3009
3010 if (I_flag) {
3011 /*
3012 * Check the inode size is right so we can issue an
3013 * error message and bail before setting up the tdb
3014 * file.
3015 */
3016 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
3017 fprintf(stderr, _("The inode size is already %lu\n"),
3018 new_inode_size);
3019 rc = 1;
3020 goto closefs;
3021 }
3022 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
3023 fprintf(stderr, "%s",
3024 _("Shrinking inode size is not supported\n"));
3025 rc = 1;
3026 goto closefs;
3027 }
3028 if (new_inode_size > fs->blocksize) {
3029 fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
3030 new_inode_size, fs->blocksize);
3031 rc = 1;
3032 goto closefs;
3033 }
3034 rc = check_fsck_needed(fs,
3035 _("Resizing inodes could take some time."));
3036 if (rc)
3037 goto closefs;
3038 /*
3039 * If inode resize is requested use the
3040 * Undo I/O manager
3041 */
3042 undo_file = default_undo_file;
3043 }
3044
3045 /* Set up an undo file */
3046 if (undo_file && io_ptr_orig == NULL) {
3047 io_ptr_orig = io_ptr;
3048 retval = tune2fs_setup_tdb(device_name, &io_ptr);
3049 if (retval) {
3050 rc = 1;
3051 goto closefs;
3052 }
3053 if (io_ptr != io_ptr_orig) {
3054 ext2fs_close_free(&fs);
3055 goto retry_open;
3056 }
3057 }
3058
3059 sb = fs->super;
3060 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
3061
3062 if (print_label) {
3063 /* For e2label emulation */
3064 printf("%.*s\n", EXT2_LEN_STR(sb->s_volume_name));
3065 remove_error_table(&et_ext2_error_table);
3066 goto closefs;
3067 }
3068
3069 retval = ext2fs_check_if_mounted(device_name, &mount_flags);
3070 if (retval) {
3071 com_err("ext2fs_check_if_mount", retval,
3072 _("while determining whether %s is mounted."),
3073 device_name);
3074 rc = 1;
3075 goto closefs;
3076 }
3077
3078 #ifdef NO_RECOVERY
3079 /* Warn if file system needs recovery and it is opened for writing. */
3080 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3081 (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
3082 (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
3083 fprintf(stderr,
3084 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
3085 "\te2fsck -E journal_only %s\n\n"
3086 "then rerun this command. Otherwise, any changes made may be overwritten\n"
3087 "by journal recovery.\n"), device_name);
3088 }
3089 #else
3090 /* Recover the journal if possible. */
3091 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & (EXT2_MF_BUSY | EXT2_MF_MOUNTED)) &&
3092 ext2fs_has_feature_journal_needs_recovery(fs->super)) {
3093 printf(_("Recovering journal.\n"));
3094 retval = ext2fs_run_ext3_journal(&fs);
3095 if (retval) {
3096 com_err("tune2fs", retval,
3097 "while recovering journal.\n");
3098 printf(_("Please run e2fsck -fy %s.\n"), argv[1]);
3099 if (fs)
3100 ext2fs_close_free(&fs);
3101 rc = 1;
3102 goto closefs;
3103 }
3104 sb = fs->super;
3105 }
3106 #endif
3107
3108 /* Normally we only need to write out the superblock */
3109 fs->flags |= EXT2_FLAG_SUPER_ONLY;
3110
3111 if (c_flag) {
3112 if (max_mount_count == 65536)
3113 max_mount_count = EXT2_DFL_MAX_MNT_COUNT +
3114 (random() % EXT2_DFL_MAX_MNT_COUNT);
3115 sb->s_max_mnt_count = max_mount_count;
3116 ext2fs_mark_super_dirty(fs);
3117 printf(_("Setting maximal mount count to %d\n"),
3118 max_mount_count);
3119 }
3120 if (C_flag) {
3121 sb->s_mnt_count = mount_count;
3122 ext2fs_mark_super_dirty(fs);
3123 printf(_("Setting current mount count to %d\n"), mount_count);
3124 }
3125 if (e_flag) {
3126 sb->s_errors = errors;
3127 ext2fs_mark_super_dirty(fs);
3128 printf(_("Setting error behavior to %d\n"), errors);
3129 }
3130 if (g_flag) {
3131 sb->s_def_resgid = resgid;
3132 ext2fs_mark_super_dirty(fs);
3133 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
3134 }
3135 if (i_flag) {
3136 if ((unsigned long long)interval >= (1ULL << 32)) {
3137 com_err(program_name, 0,
3138 _("interval between checks is too big (%lu)"),
3139 interval);
3140 rc = 1;
3141 goto closefs;
3142 }
3143 sb->s_checkinterval = interval;
3144 ext2fs_mark_super_dirty(fs);
3145 printf(_("Setting interval between checks to %lu seconds\n"),
3146 interval);
3147 }
3148 if (m_flag) {
3149 ext2fs_r_blocks_count_set(sb, reserved_ratio *
3150 ext2fs_blocks_count(sb) / 100.0);
3151 ext2fs_mark_super_dirty(fs);
3152 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
3153 reserved_ratio,
3154 (unsigned long long) ext2fs_r_blocks_count(sb));
3155 }
3156 if (r_flag) {
3157 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
3158 com_err(program_name, 0,
3159 _("reserved blocks count is too big (%llu)"),
3160 (unsigned long long) reserved_blocks);
3161 rc = 1;
3162 goto closefs;
3163 }
3164 ext2fs_r_blocks_count_set(sb, reserved_blocks);
3165 ext2fs_mark_super_dirty(fs);
3166 printf(_("Setting reserved blocks count to %llu\n"),
3167 (unsigned long long) reserved_blocks);
3168 }
3169 if (s_flag == 1) {
3170 if (ext2fs_has_feature_sparse_super(sb)) {
3171 fputs(_("\nThe filesystem already has sparse "
3172 "superblocks.\n"), stderr);
3173 } else if (ext2fs_has_feature_meta_bg(sb)) {
3174 fputs(_("\nSetting the sparse superblock flag not "
3175 "supported\nfor filesystems with "
3176 "the meta_bg feature enabled.\n"),
3177 stderr);
3178 rc = 1;
3179 goto closefs;
3180 } else {
3181 ext2fs_set_feature_sparse_super(sb);
3182 sb->s_state &= ~EXT2_VALID_FS;
3183 ext2fs_mark_super_dirty(fs);
3184 printf(_("\nSparse superblock flag set. %s"),
3185 _(please_fsck));
3186 }
3187 }
3188 if (s_flag == 0) {
3189 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
3190 stderr);
3191 rc = 1;
3192 goto closefs;
3193 }
3194 if (T_flag) {
3195 sb->s_lastcheck = last_check_time;
3196 ext2fs_mark_super_dirty(fs);
3197 printf(_("Setting time filesystem last checked to %s\n"),
3198 ctime(&last_check_time));
3199 }
3200 if (u_flag) {
3201 sb->s_def_resuid = resuid;
3202 ext2fs_mark_super_dirty(fs);
3203 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
3204 }
3205 if (L_flag) {
3206 if (strlen(new_label) > sizeof(sb->s_volume_name))
3207 fputs(_("Warning: label too long, truncating.\n"),
3208 stderr);
3209 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
3210 strncpy((char *)sb->s_volume_name, new_label,
3211 sizeof(sb->s_volume_name));
3212 ext2fs_mark_super_dirty(fs);
3213 }
3214 if (M_flag) {
3215 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
3216 strncpy((char *)sb->s_last_mounted, new_last_mounted,
3217 sizeof(sb->s_last_mounted));
3218 ext2fs_mark_super_dirty(fs);
3219 }
3220 if (mntopts_cmd) {
3221 rc = update_mntopts(fs, mntopts_cmd);
3222 if (rc)
3223 goto closefs;
3224 }
3225 if (features_cmd) {
3226 rc = update_feature_set(fs, features_cmd);
3227 if (rc)
3228 goto closefs;
3229 }
3230 if (extended_cmd) {
3231 rc = parse_extended_opts(fs, extended_cmd);
3232 if (rc)
3233 goto closefs;
3234 if (clear_mmp && !f_flag) {
3235 fputs(_("Error in using clear_mmp. "
3236 "It must be used with -f\n"),
3237 stderr);
3238 goto closefs;
3239 }
3240 }
3241 if (clear_mmp) {
3242 rc = ext2fs_mmp_clear(fs);
3243 goto closefs;
3244 }
3245 if (journal_size || journal_device) {
3246 rc = add_journal(fs);
3247 if (rc)
3248 goto closefs;
3249 }
3250
3251 if (Q_flag) {
3252 if (mount_flags & EXT2_MF_MOUNTED) {
3253 fputs(_("The quota feature may only be changed when "
3254 "the filesystem is unmounted.\n"), stderr);
3255 rc = 1;
3256 goto closefs;
3257 }
3258 rc = handle_quota_options(fs);
3259 if (rc)
3260 goto closefs;
3261 }
3262
3263 if (U_flag) {
3264 int set_csum = 0;
3265 dgrp_t i;
3266 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3267 __u8 old_uuid[UUID_SIZE];
3268
3269 if (ext2fs_has_feature_stable_inodes(fs->super)) {
3270 fputs(_("Cannot change the UUID of this filesystem "
3271 "because it has the stable_inodes feature "
3272 "flag.\n"), stderr);
3273 exit(1);
3274 }
3275
3276 if (!ext2fs_has_feature_csum_seed(fs->super) &&
3277 (ext2fs_has_feature_metadata_csum(fs->super) ||
3278 ext2fs_has_feature_ea_inode(fs->super))) {
3279 rc = check_fsck_needed(fs,
3280 _("Setting the UUID on this "
3281 "filesystem could take some time."));
3282 if (rc)
3283 goto closefs;
3284 rewrite_checksums = REWRITE_ALL;
3285 }
3286
3287 if (ext2fs_has_group_desc_csum(fs)) {
3288 /*
3289 * Changing the UUID on a metadata_csum FS requires
3290 * rewriting all metadata, which can race with a
3291 * mounted fs. Don't allow that unless we're saving
3292 * the checksum seed.
3293 */
3294 if ((mount_flags & EXT2_MF_MOUNTED) &&
3295 !ext2fs_has_feature_csum_seed(fs->super) &&
3296 ext2fs_has_feature_metadata_csum(fs->super)) {
3297 fputs(_("The UUID may only be "
3298 "changed when the filesystem is "
3299 "unmounted.\n"), stderr);
3300 fputs(_("If you only use kernels newer than "
3301 "v4.4, run 'tune2fs -O "
3302 "metadata_csum_seed' and re-run this "
3303 "command.\n"), stderr);
3304 try_confirm_csum_seed_support();
3305 rc = 1;
3306 goto closefs;
3307 }
3308
3309 /*
3310 * Determine if the block group checksums are
3311 * correct so we know whether or not to set
3312 * them later on.
3313 */
3314 for (i = 0; i < fs->group_desc_count; i++)
3315 if (!ext2fs_group_desc_csum_verify(fs, i))
3316 break;
3317 if (i >= fs->group_desc_count)
3318 set_csum = 1;
3319 }
3320
3321 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
3322 if ((strcasecmp(new_UUID, "null") == 0) ||
3323 (strcasecmp(new_UUID, "clear") == 0)) {
3324 uuid_clear(sb->s_uuid);
3325 } else if (strcasecmp(new_UUID, "time") == 0) {
3326 uuid_generate_time(sb->s_uuid);
3327 } else if (strcasecmp(new_UUID, "random") == 0) {
3328 uuid_generate(sb->s_uuid);
3329 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
3330 com_err(program_name, 0, "%s",
3331 _("Invalid UUID format\n"));
3332 rc = 1;
3333 goto closefs;
3334 }
3335 ext2fs_init_csum_seed(fs);
3336 if (set_csum) {
3337 for (i = 0; i < fs->group_desc_count; i++)
3338 ext2fs_group_desc_csum_set(fs, i);
3339 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3340 }
3341
3342 /* If this is a journal dev, we need to copy UUID into jsb */
3343 if (!(rc = get_journal_sb(fs, buf))) {
3344 journal_superblock_t *jsb;
3345
3346 jsb = (journal_superblock_t *) buf;
3347 fputs(_("Need to update journal superblock.\n"), stdout);
3348 memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3349
3350 /* Writeback the journal superblock */
3351 if ((rc = io_channel_write_blk64(fs->io,
3352 ext2fs_journal_sb_start(fs->blocksize),
3353 -SUPERBLOCK_SIZE, buf)))
3354 goto closefs;
3355 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3356 goto closefs;
3357 else {
3358 rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3359
3360 if ((rc = fs_update_journal_user(sb, old_uuid)))
3361 goto closefs;
3362 }
3363
3364 ext2fs_mark_super_dirty(fs);
3365 }
3366
3367 if (I_flag) {
3368 if (mount_flags & EXT2_MF_MOUNTED) {
3369 fputs(_("The inode size may only be "
3370 "changed when the filesystem is "
3371 "unmounted.\n"), stderr);
3372 rc = 1;
3373 goto closefs;
3374 }
3375 if (ext2fs_has_feature_flex_bg(fs->super)) {
3376 fputs(_("Changing the inode size not supported for "
3377 "filesystems with the flex_bg\n"
3378 "feature enabled.\n"),
3379 stderr);
3380 rc = 1;
3381 goto closefs;
3382 }
3383 /*
3384 * We want to update group descriptor also
3385 * with the new free inode count
3386 */
3387 if (rewrite_checksums)
3388 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3389 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3390 retval = resize_inode(fs, new_inode_size);
3391 if (rewrite_checksums)
3392 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3393 if (retval == 0) {
3394 printf(_("Setting inode size %lu\n"),
3395 new_inode_size);
3396 rewrite_checksums = REWRITE_ALL;
3397 } else {
3398 printf("%s", _("Failed to change inode size\n"));
3399 rc = 1;
3400 goto closefs;
3401 }
3402 }
3403
3404 if (rewrite_checksums)
3405 rewrite_metadata_checksums(fs, rewrite_checksums);
3406
3407 if (l_flag)
3408 list_super(sb);
3409 if (stride_set) {
3410 sb->s_raid_stride = stride;
3411 ext2fs_mark_super_dirty(fs);
3412 printf(_("Setting stride size to %d\n"), stride);
3413 }
3414 if (stripe_width_set) {
3415 sb->s_raid_stripe_width = stripe_width;
3416 ext2fs_mark_super_dirty(fs);
3417 printf(_("Setting stripe width to %d\n"), stripe_width);
3418 }
3419 if (ext_mount_opts) {
3420 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3421 sizeof(fs->super->s_mount_opts));
3422 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3423 ext2fs_mark_super_dirty(fs);
3424 printf(_("Setting extended default mount options to '%s'\n"),
3425 ext_mount_opts);
3426 free(ext_mount_opts);
3427 }
3428
3429 free(device_name);
3430 remove_error_table(&et_ext2_error_table);
3431
3432 closefs:
3433 if (rc) {
3434 ext2fs_mmp_stop(fs);
3435 #ifndef BUILD_AS_LIB
3436 exit(1);
3437 #endif
3438 }
3439
3440 if (feature_64bit)
3441 convert_64bit(fs, feature_64bit);
3442 return (ext2fs_close_free(&fs) ? 1 : 0);
3443 }
3444