1 /*
2 * tune2fs.c - Change the file system parameters on an ext2 file system
3 *
4 * Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
5 * Laboratoire MASI, Institut Blaise Pascal
6 * Universite Pierre et Marie Curie (Paris VI)
7 *
8 * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
9 *
10 * %Begin-Header%
11 * This file may be redistributed under the terms of the GNU Public
12 * License.
13 * %End-Header%
14 */
15
16 /*
17 * History:
18 * 93/06/01 - Creation
19 * 93/10/31 - Added the -c option to change the maximal mount counts
20 * 93/12/14 - Added -l flag to list contents of superblock
21 * M.J.E. Mol (marcel@duteca.et.tudelft.nl)
22 * F.W. ten Wolde (franky@duteca.et.tudelft.nl)
23 * 93/12/29 - Added the -e option to change errors behavior
24 * 94/02/27 - Ported to use the ext2fs library
25 * 94/03/06 - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
26 */
27
28 #define _XOPEN_SOURCE 600 /* for inclusion of strptime() */
29 #include "config.h"
30 #include <fcntl.h>
31 #include <grp.h>
32 #ifdef HAVE_GETOPT_H
33 #include <getopt.h>
34 #else
35 extern char *optarg;
36 extern int optind;
37 #endif
38 #include <pwd.h>
39 #include <stdio.h>
40 #ifdef HAVE_STDLIB_H
41 #include <stdlib.h>
42 #endif
43 #ifdef HAVE_STRINGS_H
44 #include <strings.h> /* for strcasecmp() */
45 #else
46 #define _BSD_SOURCE /* for inclusion of strcasecmp() via <string.h> */
47 #define _DEFAULT_SOURCE /* since glibc 2.20 _BSD_SOURCE is deprecated */
48 #endif
49 #include <string.h>
50 #include <time.h>
51 #include <unistd.h>
52 #include <sys/types.h>
53 #include <libgen.h>
54 #include <limits.h>
55
56 #include "ext2fs/ext2_fs.h"
57 #include "ext2fs/ext2fs.h"
58 #include "ext2fs/kernel-jbd.h"
59 #include "et/com_err.h"
60 #include "support/plausible.h"
61 #include "support/quotaio.h"
62 #include "uuid/uuid.h"
63 #include "e2p/e2p.h"
64 #include "util.h"
65 #include "blkid/blkid.h"
66
67 #include "../version.h"
68 #include "support/nls-enable.h"
69
70 #define QOPT_ENABLE (1)
71 #define QOPT_DISABLE (-1)
72
73 extern int ask_yn(const char *string, int def);
74
75 const char *program_name = "tune2fs";
76 char *device_name;
77 char *new_label, *new_last_mounted, *new_UUID;
78 char *io_options;
79 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
80 static int m_flag, M_flag, Q_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
81 static int I_flag;
82 static int clear_mmp;
83 static time_t last_check_time;
84 static int print_label;
85 static int max_mount_count, mount_count, mount_flags;
86 static unsigned long interval;
87 static blk64_t reserved_blocks;
88 static double reserved_ratio;
89 static unsigned long resgid, resuid;
90 static unsigned short errors;
91 static int open_flag;
92 static char *features_cmd;
93 static char *mntopts_cmd;
94 static int stride, stripe_width;
95 static int stride_set, stripe_width_set;
96 static char *extended_cmd;
97 static unsigned long new_inode_size;
98 static char *ext_mount_opts;
99 static int quota_enable[MAXQUOTAS];
100 static int rewrite_checksums;
101 static int feature_64bit;
102 static int fsck_requested;
103 static char *undo_file;
104
105 int journal_size, journal_flags;
106 char *journal_device;
107 static blk64_t journal_location = ~0LL;
108
109 static struct list_head blk_move_list;
110
111 struct blk_move {
112 struct list_head list;
113 blk64_t old_loc;
114 blk64_t new_loc;
115 };
116
117 errcode_t ext2fs_run_ext3_journal(ext2_filsys *fs);
118
119 static const char *fsck_explain = N_("\nThis operation requires a freshly checked filesystem.\n");
120
121 static const char *please_fsck = N_("Please run e2fsck -f on the filesystem.\n");
122 static const char *please_dir_fsck =
123 N_("Please run e2fsck -fD on the filesystem.\n");
124
125 #ifdef CONFIG_BUILD_FINDFS
126 void do_findfs(int argc, char **argv);
127 #endif
128
129 #ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jbd-debug */
130 int journal_enable_debug = -1;
131 #endif
132
usage(void)133 static void usage(void)
134 {
135 fprintf(stderr,
136 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] [-f] "
137 "[-g group]\n"
138 "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
139 "\t[-m reserved_blocks_percent] [-o [^]mount_options[,...]]\n"
140 "\t[-r reserved_blocks_count] [-u user] [-C mount_count]\n"
141 "\t[-L volume_label] [-M last_mounted_dir]\n"
142 "\t[-O [^]feature[,...]] [-Q quota_options]\n"
143 "\t[-E extended-option[,...]] [-T last_check_time] "
144 "[-U UUID]\n\t[-I new_inode_size] [-z undo_file] device\n"),
145 program_name);
146 exit(1);
147 }
148
149 static __u32 ok_features[3] = {
150 /* Compat */
151 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
152 EXT2_FEATURE_COMPAT_DIR_INDEX,
153 /* Incompat */
154 EXT2_FEATURE_INCOMPAT_FILETYPE |
155 EXT3_FEATURE_INCOMPAT_EXTENTS |
156 EXT4_FEATURE_INCOMPAT_FLEX_BG |
157 EXT4_FEATURE_INCOMPAT_EA_INODE|
158 EXT4_FEATURE_INCOMPAT_MMP |
159 EXT4_FEATURE_INCOMPAT_64BIT |
160 EXT4_FEATURE_INCOMPAT_ENCRYPT |
161 EXT4_FEATURE_INCOMPAT_CSUM_SEED |
162 EXT4_FEATURE_INCOMPAT_LARGEDIR,
163 /* R/O compat */
164 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
165 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
166 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
167 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
168 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
169 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER |
170 EXT4_FEATURE_RO_COMPAT_QUOTA |
171 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
172 EXT4_FEATURE_RO_COMPAT_READONLY |
173 EXT4_FEATURE_RO_COMPAT_PROJECT |
174 EXT4_FEATURE_RO_COMPAT_VERITY
175 };
176
177 static __u32 clear_ok_features[3] = {
178 /* Compat */
179 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
180 EXT2_FEATURE_COMPAT_RESIZE_INODE |
181 EXT2_FEATURE_COMPAT_DIR_INDEX,
182 /* Incompat */
183 EXT2_FEATURE_INCOMPAT_FILETYPE |
184 EXT4_FEATURE_INCOMPAT_FLEX_BG |
185 EXT4_FEATURE_INCOMPAT_MMP |
186 EXT4_FEATURE_INCOMPAT_64BIT |
187 EXT4_FEATURE_INCOMPAT_CSUM_SEED,
188 /* R/O compat */
189 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
190 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
191 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
192 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
193 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
194 EXT4_FEATURE_RO_COMPAT_QUOTA |
195 EXT4_FEATURE_RO_COMPAT_PROJECT |
196 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM |
197 EXT4_FEATURE_RO_COMPAT_READONLY
198 };
199
200 /**
201 * Try to get journal super block if any
202 */
get_journal_sb(ext2_filsys jfs,char buf[SUPERBLOCK_SIZE])203 static int get_journal_sb(ext2_filsys jfs, char buf[SUPERBLOCK_SIZE])
204 {
205 int retval;
206 journal_superblock_t *jsb;
207
208 if (!ext2fs_has_feature_journal_dev(jfs->super)) {
209 return EXT2_ET_UNSUPP_FEATURE;
210 }
211
212 /* Get the journal superblock */
213 if ((retval = io_channel_read_blk64(jfs->io,
214 ext2fs_journal_sb_start(jfs->blocksize), -SUPERBLOCK_SIZE, buf))) {
215 com_err(program_name, retval, "%s",
216 _("while reading journal superblock"));
217 return retval;
218 }
219
220 jsb = (journal_superblock_t *) buf;
221 if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
222 (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
223 fputs(_("Journal superblock not found!\n"), stderr);
224 return EXT2_ET_BAD_MAGIC;
225 }
226
227 return 0;
228 }
229
journal_user(__u8 uuid[UUID_SIZE],__u8 s_users[JFS_USERS_SIZE],int nr_users)230 static __u8 *journal_user(__u8 uuid[UUID_SIZE], __u8 s_users[JFS_USERS_SIZE],
231 int nr_users)
232 {
233 int i;
234 for (i = 0; i < nr_users; i++) {
235 if (memcmp(uuid, &s_users[i * UUID_SIZE], UUID_SIZE) == 0)
236 return &s_users[i * UUID_SIZE];
237 }
238
239 return NULL;
240 }
241
242 /*
243 * Remove an external journal from the filesystem
244 */
remove_journal_device(ext2_filsys fs)245 static int remove_journal_device(ext2_filsys fs)
246 {
247 char *journal_path;
248 ext2_filsys jfs;
249 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
250 journal_superblock_t *jsb;
251 int i, nr_users;
252 errcode_t retval;
253 int commit_remove_journal = 0;
254 io_manager io_ptr;
255
256 if (f_flag)
257 commit_remove_journal = 1; /* force removal even if error */
258
259 uuid_unparse(fs->super->s_journal_uuid, buf);
260 journal_path = blkid_get_devname(NULL, "UUID", buf);
261
262 if (!journal_path) {
263 journal_path =
264 ext2fs_find_block_device(fs->super->s_journal_dev);
265 if (!journal_path)
266 goto no_valid_journal;
267 }
268
269 #ifdef CONFIG_TESTIO_DEBUG
270 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
271 io_ptr = test_io_manager;
272 test_io_backing_manager = unix_io_manager;
273 } else
274 #endif
275 io_ptr = unix_io_manager;
276 retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
277 EXT2_FLAG_JOURNAL_DEV_OK, 0,
278 fs->blocksize, io_ptr, &jfs);
279 if (retval) {
280 com_err(program_name, retval, "%s",
281 _("while trying to open external journal"));
282 goto no_valid_journal;
283 }
284
285 if ((retval = get_journal_sb(jfs, buf))) {
286 if (retval == EXT2_ET_UNSUPP_FEATURE)
287 fprintf(stderr, _("%s is not a journal device.\n"),
288 journal_path);
289 goto no_valid_journal;
290 }
291
292 jsb = (journal_superblock_t *) buf;
293 /* Find the filesystem UUID */
294 nr_users = ntohl(jsb->s_nr_users);
295 if (nr_users > JFS_USERS_MAX) {
296 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
297 "is too high (%d).\n"), nr_users);
298 commit_remove_journal = 1;
299 goto no_valid_journal;
300 }
301
302 if (!journal_user(fs->super->s_uuid, jsb->s_users, nr_users)) {
303 fputs(_("Filesystem's UUID not found on journal device.\n"),
304 stderr);
305 commit_remove_journal = 1;
306 goto no_valid_journal;
307 }
308 nr_users--;
309 for (i = 0; i < nr_users; i++)
310 memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
311 jsb->s_nr_users = htonl(nr_users);
312
313 /* Write back the journal superblock */
314 retval = io_channel_write_blk64(jfs->io,
315 ext2fs_journal_sb_start(fs->blocksize),
316 -SUPERBLOCK_SIZE, buf);
317 if (retval) {
318 com_err(program_name, retval,
319 "while writing journal superblock.");
320 goto no_valid_journal;
321 }
322
323 commit_remove_journal = 1;
324
325 no_valid_journal:
326 if (commit_remove_journal == 0) {
327 fputs(_("Cannot locate journal device. It was NOT removed\n"
328 "Use -f option to remove missing journal device.\n"),
329 stderr);
330 return 1;
331 }
332 fs->super->s_journal_dev = 0;
333 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
334 uuid_clear(fs->super->s_journal_uuid);
335 ext2fs_mark_super_dirty(fs);
336 fputs(_("Journal removed\n"), stdout);
337 free(journal_path);
338
339 return 0;
340 }
341
342 /* 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)))343 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
344 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
345 blk64_t ref_block EXT2FS_ATTR((unused)),
346 int ref_offset EXT2FS_ATTR((unused)),
347 void *private EXT2FS_ATTR((unused)))
348 {
349 blk64_t block;
350 int group;
351
352 block = *blocknr;
353 ext2fs_unmark_block_bitmap2(fs->block_map, block);
354 group = ext2fs_group_of_blk2(fs, block);
355 ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
356 ext2fs_group_desc_csum_set(fs, group);
357 ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
358 return 0;
359 }
360
361 /*
362 * Remove the journal inode from the filesystem
363 */
remove_journal_inode(ext2_filsys fs)364 static errcode_t remove_journal_inode(ext2_filsys fs)
365 {
366 struct ext2_inode inode;
367 errcode_t retval;
368 ino_t ino = fs->super->s_journal_inum;
369
370 retval = ext2fs_read_inode(fs, ino, &inode);
371 if (retval) {
372 com_err(program_name, retval, "%s",
373 _("while reading journal inode"));
374 return retval;
375 }
376 if (ino == EXT2_JOURNAL_INO) {
377 retval = ext2fs_read_bitmaps(fs);
378 if (retval) {
379 com_err(program_name, retval, "%s",
380 _("while reading bitmaps"));
381 return retval;
382 }
383 retval = ext2fs_block_iterate3(fs, ino,
384 BLOCK_FLAG_READ_ONLY, NULL,
385 release_blocks_proc, NULL);
386 if (retval) {
387 com_err(program_name, retval, "%s",
388 _("while clearing journal inode"));
389 return retval;
390 }
391 memset(&inode, 0, sizeof(inode));
392 ext2fs_mark_bb_dirty(fs);
393 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
394 } else
395 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
396 retval = ext2fs_write_inode(fs, ino, &inode);
397 if (retval) {
398 com_err(program_name, retval, "%s",
399 _("while writing journal inode"));
400 return retval;
401 }
402 fs->super->s_journal_inum = 0;
403 memset(fs->super->s_jnl_blocks, 0, sizeof(fs->super->s_jnl_blocks));
404 ext2fs_mark_super_dirty(fs);
405
406 return 0;
407 }
408
409 /*
410 * Update the default mount options
411 */
update_mntopts(ext2_filsys fs,char * mntopts)412 static int update_mntopts(ext2_filsys fs, char *mntopts)
413 {
414 struct ext2_super_block *sb = fs->super;
415
416 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
417 fprintf(stderr, _("Invalid mount option set: %s\n"),
418 mntopts);
419 return 1;
420 }
421 ext2fs_mark_super_dirty(fs);
422
423 return 0;
424 }
425
check_fsck_needed(ext2_filsys fs,const char * prompt)426 static void check_fsck_needed(ext2_filsys fs, const char *prompt)
427 {
428 /* Refuse to modify anything but a freshly checked valid filesystem. */
429 if (!(fs->super->s_state & EXT2_VALID_FS) ||
430 (fs->super->s_state & EXT2_ERROR_FS) ||
431 (fs->super->s_lastcheck < fs->super->s_mtime)) {
432 puts(_(fsck_explain));
433 puts(_(please_fsck));
434 if (mount_flags & EXT2_MF_READONLY)
435 printf("%s", _("(and reboot afterwards!)\n"));
436 exit(1);
437 }
438
439 /* Give the admin a few seconds to bail out of a dangerous op. */
440 if (!getenv("TUNE2FS_FORCE_PROMPT") && (!isatty(0) || !isatty(1)))
441 return;
442
443 puts(prompt);
444 proceed_question(5);
445 }
446
request_dir_fsck_afterwards(ext2_filsys fs)447 static void request_dir_fsck_afterwards(ext2_filsys fs)
448 {
449 static int requested;
450
451 if (requested++)
452 return;
453 fsck_requested++;
454 fs->super->s_state &= ~EXT2_VALID_FS;
455 puts(_(fsck_explain));
456 puts(_(please_dir_fsck));
457 if (mount_flags & EXT2_MF_READONLY)
458 printf("%s", _("(and reboot afterwards!)\n"));
459 }
460
request_fsck_afterwards(ext2_filsys fs)461 static void request_fsck_afterwards(ext2_filsys fs)
462 {
463 static int requested = 0;
464
465 if (requested++)
466 return;
467 fsck_requested++;
468 fs->super->s_state &= ~EXT2_VALID_FS;
469 printf("\n%s\n", _(please_fsck));
470 if (mount_flags & EXT2_MF_READONLY)
471 printf("%s", _("(and reboot afterwards!)\n"));
472 }
473
convert_64bit(ext2_filsys fs,int direction)474 static void convert_64bit(ext2_filsys fs, int direction)
475 {
476 /*
477 * Is resize2fs going to demand a fsck run? Might as well tell the
478 * user now.
479 */
480 if (!fsck_requested &&
481 ((fs->super->s_state & EXT2_ERROR_FS) ||
482 !(fs->super->s_state & EXT2_VALID_FS) ||
483 fs->super->s_lastcheck < fs->super->s_mtime))
484 request_fsck_afterwards(fs);
485 if (fsck_requested)
486 fprintf(stderr, _("After running e2fsck, please run `resize2fs %s %s"),
487 direction > 0 ? "-b" : "-s", fs->device_name);
488 else
489 fprintf(stderr, _("Please run `resize2fs %s %s"),
490 direction > 0 ? "-b" : "-s", fs->device_name);
491
492 if (undo_file)
493 fprintf(stderr, _(" -z \"%s\""), undo_file);
494 if (direction > 0)
495 fprintf(stderr, _("' to enable 64-bit mode.\n"));
496 else
497 fprintf(stderr, _("' to disable 64-bit mode.\n"));
498 }
499
500 /* Rewrite extents */
rewrite_extents(ext2_filsys fs,ext2_ino_t ino,struct ext2_inode * inode)501 static errcode_t rewrite_extents(ext2_filsys fs, ext2_ino_t ino,
502 struct ext2_inode *inode)
503 {
504 ext2_extent_handle_t handle;
505 struct ext2fs_extent extent;
506 errcode_t errcode;
507 struct ext2_extent_info info;
508
509 if (!(inode->i_flags & EXT4_EXTENTS_FL) ||
510 !ext2fs_has_feature_metadata_csum(fs->super))
511 return 0;
512
513 errcode = ext2fs_extent_open(fs, ino, &handle);
514 if (errcode)
515 return errcode;
516
517 errcode = ext2fs_extent_get(handle, EXT2_EXTENT_ROOT, &extent);
518 if (errcode)
519 goto out;
520
521 do {
522 errcode = ext2fs_extent_get_info(handle, &info);
523 if (errcode)
524 break;
525
526 /*
527 * If this is the first extent in an extent block that we
528 * haven't visited, rewrite the extent to force the ETB
529 * checksum to be rewritten.
530 */
531 if (info.curr_entry == 1 && info.curr_level != 0 &&
532 !(extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)) {
533 errcode = ext2fs_extent_replace(handle, 0, &extent);
534 if (errcode)
535 break;
536 }
537
538 /* Skip to the end of a block of leaf nodes */
539 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
540 errcode = ext2fs_extent_get(handle,
541 EXT2_EXTENT_LAST_SIB,
542 &extent);
543 if (errcode)
544 break;
545 }
546
547 errcode = ext2fs_extent_get(handle, EXT2_EXTENT_NEXT, &extent);
548 } while (errcode == 0);
549
550 out:
551 /* Ok if we run off the end */
552 if (errcode == EXT2_ET_EXTENT_NO_NEXT)
553 errcode = 0;
554 ext2fs_extent_free(handle);
555 return errcode;
556 }
557
558 /*
559 * Rewrite directory blocks with checksums
560 */
561 struct rewrite_dir_context {
562 char *buf;
563 errcode_t errcode;
564 ext2_ino_t dir;
565 int is_htree;
566 };
567
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)568 static int rewrite_dir_block(ext2_filsys fs,
569 blk64_t *blocknr,
570 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
571 blk64_t ref_block EXT2FS_ATTR((unused)),
572 int ref_offset EXT2FS_ATTR((unused)),
573 void *priv_data)
574 {
575 struct ext2_dx_countlimit *dcl = NULL;
576 struct rewrite_dir_context *ctx = priv_data;
577 int dcl_offset, changed = 0;
578
579 ctx->errcode = ext2fs_read_dir_block4(fs, *blocknr, ctx->buf, 0,
580 ctx->dir);
581 if (ctx->errcode)
582 return BLOCK_ABORT;
583
584 /* if htree node... */
585 if (ctx->is_htree)
586 ext2fs_get_dx_countlimit(fs, (struct ext2_dir_entry *)ctx->buf,
587 &dcl, &dcl_offset);
588 if (dcl) {
589 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
590 /* Ensure limit is the max size */
591 int max_entries = (fs->blocksize - dcl_offset) /
592 sizeof(struct ext2_dx_entry);
593 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries) {
594 changed = 1;
595 dcl->limit = ext2fs_cpu_to_le16(max_entries);
596 }
597 } else {
598 /* If htree block is full then rebuild the dir */
599 if (ext2fs_le16_to_cpu(dcl->count) ==
600 ext2fs_le16_to_cpu(dcl->limit)) {
601 request_dir_fsck_afterwards(fs);
602 return 0;
603 }
604 /*
605 * Ensure dcl->limit is small enough to leave room for
606 * the checksum tail.
607 */
608 int max_entries = (fs->blocksize - (dcl_offset +
609 sizeof(struct ext2_dx_tail))) /
610 sizeof(struct ext2_dx_entry);
611 if (ext2fs_le16_to_cpu(dcl->limit) != max_entries)
612 dcl->limit = ext2fs_cpu_to_le16(max_entries);
613 /* Always rewrite checksum */
614 changed = 1;
615 }
616 } else {
617 unsigned int rec_len, name_size;
618 char *top = ctx->buf + fs->blocksize;
619 struct ext2_dir_entry *de = (struct ext2_dir_entry *)ctx->buf;
620 struct ext2_dir_entry *last_de = NULL, *penultimate_de = NULL;
621
622 /* Find last and penultimate dirent */
623 while ((char *)de < top) {
624 penultimate_de = last_de;
625 last_de = de;
626 ctx->errcode = ext2fs_get_rec_len(fs, de, &rec_len);
627 if (!ctx->errcode && !rec_len)
628 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
629 if (ctx->errcode)
630 return BLOCK_ABORT;
631 de = (struct ext2_dir_entry *)(((char *)de) + rec_len);
632 }
633 ctx->errcode = ext2fs_get_rec_len(fs, last_de, &rec_len);
634 if (ctx->errcode)
635 return BLOCK_ABORT;
636 name_size = ext2fs_dirent_name_len(last_de);
637
638 if (!ext2fs_has_feature_metadata_csum(fs->super)) {
639 if (!penultimate_de)
640 return 0;
641 if (last_de->inode ||
642 name_size ||
643 rec_len != sizeof(struct ext2_dir_entry_tail))
644 return 0;
645 /*
646 * The last dirent is unused and the right length to
647 * have stored a checksum. Erase it.
648 */
649 ctx->errcode = ext2fs_get_rec_len(fs, penultimate_de,
650 &rec_len);
651 if (!rec_len)
652 ctx->errcode = EXT2_ET_DIR_CORRUPTED;
653 if (ctx->errcode)
654 return BLOCK_ABORT;
655 ext2fs_set_rec_len(fs, rec_len +
656 sizeof(struct ext2_dir_entry_tail),
657 penultimate_de);
658 changed = 1;
659 } else {
660 unsigned csum_size = sizeof(struct ext2_dir_entry_tail);
661 struct ext2_dir_entry_tail *t;
662
663 /*
664 * If the last dirent looks like the tail, just update
665 * the checksum.
666 */
667 if (!last_de->inode &&
668 rec_len == csum_size) {
669 t = (struct ext2_dir_entry_tail *)last_de;
670 t->det_reserved_name_len =
671 EXT2_DIR_NAME_LEN_CSUM;
672 changed = 1;
673 goto out;
674 }
675 if (name_size & 3)
676 name_size = (name_size & ~3) + 4;
677 /* If there's not enough space for the tail, e2fsck */
678 if (rec_len <= (8 + name_size + csum_size)) {
679 request_dir_fsck_afterwards(fs);
680 return 0;
681 }
682 /* Shorten that last de and insert the tail */
683 ext2fs_set_rec_len(fs, rec_len - csum_size, last_de);
684 t = EXT2_DIRENT_TAIL(ctx->buf, fs->blocksize);
685 ext2fs_initialize_dirent_tail(fs, t);
686
687 /* Always update checksum */
688 changed = 1;
689 }
690 }
691
692 out:
693 if (!changed)
694 return 0;
695
696 ctx->errcode = ext2fs_write_dir_block4(fs, *blocknr, ctx->buf,
697 0, ctx->dir);
698 if (ctx->errcode)
699 return BLOCK_ABORT;
700
701 return 0;
702 }
703
rewrite_directory(ext2_filsys fs,ext2_ino_t dir,struct ext2_inode * inode)704 static errcode_t rewrite_directory(ext2_filsys fs, ext2_ino_t dir,
705 struct ext2_inode *inode)
706 {
707 errcode_t retval;
708 struct rewrite_dir_context ctx;
709
710 retval = ext2fs_get_mem(fs->blocksize, &ctx.buf);
711 if (retval)
712 return retval;
713
714 ctx.is_htree = (inode->i_flags & EXT2_INDEX_FL);
715 ctx.dir = dir;
716 ctx.errcode = 0;
717 retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_READ_ONLY |
718 BLOCK_FLAG_DATA_ONLY,
719 0, rewrite_dir_block, &ctx);
720
721 ext2fs_free_mem(&ctx.buf);
722 if (retval)
723 return retval;
724
725 return ctx.errcode;
726 }
727
728 /*
729 * Context information that does not change across rewrite_one_inode()
730 * invocations.
731 */
732 struct rewrite_context {
733 ext2_filsys fs;
734 struct ext2_inode *zero_inode;
735 char *ea_buf;
736 int inode_size;
737 };
738
739 #define fatal_err(code, args...) \
740 do { \
741 com_err(__func__, code, args); \
742 exit(1); \
743 } while (0);
744
update_ea_inode_hash(struct rewrite_context * ctx,ext2_ino_t ino,struct ext2_inode * inode)745 static void update_ea_inode_hash(struct rewrite_context *ctx, ext2_ino_t ino,
746 struct ext2_inode *inode)
747 {
748 errcode_t retval;
749 ext2_file_t file;
750 __u32 hash;
751
752 retval = ext2fs_file_open(ctx->fs, ino, 0, &file);
753 if (retval)
754 fatal_err(retval, "open ea_inode");
755 retval = ext2fs_file_read(file, ctx->ea_buf, inode->i_size,
756 NULL);
757 if (retval)
758 fatal_err(retval, "read ea_inode");
759 retval = ext2fs_file_close(file);
760 if (retval)
761 fatal_err(retval, "close ea_inode");
762
763 hash = ext2fs_crc32c_le(ctx->fs->csum_seed,
764 (unsigned char *) ctx->ea_buf, inode->i_size);
765 ext2fs_set_ea_inode_hash(inode, hash);
766 }
767
update_xattr_entry_hashes(ext2_filsys fs,struct ext2_ext_attr_entry * entry,struct ext2_ext_attr_entry * end)768 static int update_xattr_entry_hashes(ext2_filsys fs,
769 struct ext2_ext_attr_entry *entry,
770 struct ext2_ext_attr_entry *end)
771 {
772 int modified = 0;
773 errcode_t retval;
774
775 while (entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry)) {
776 if (entry->e_value_inum) {
777 retval = ext2fs_ext_attr_hash_entry2(fs, entry, NULL,
778 &entry->e_hash);
779 if (retval)
780 fatal_err(retval, "hash ea_inode entry");
781 modified = 1;
782 }
783 entry = EXT2_EXT_ATTR_NEXT(entry);
784 }
785 return modified;
786 }
787
update_inline_xattr_hashes(struct rewrite_context * ctx,struct ext2_inode_large * inode)788 static void update_inline_xattr_hashes(struct rewrite_context *ctx,
789 struct ext2_inode_large *inode)
790 {
791 struct ext2_ext_attr_entry *start, *end;
792 __u32 *ea_magic;
793
794 if (inode->i_extra_isize == 0)
795 return;
796
797 if (inode->i_extra_isize & 3 ||
798 inode->i_extra_isize > ctx->inode_size - EXT2_GOOD_OLD_INODE_SIZE)
799 fatal_err(EXT2_ET_INODE_CORRUPTED, "bad i_extra_isize")
800
801 ea_magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
802 inode->i_extra_isize);
803 if (*ea_magic != EXT2_EXT_ATTR_MAGIC)
804 return;
805
806 start = (struct ext2_ext_attr_entry *)(ea_magic + 1);
807 end = (struct ext2_ext_attr_entry *)((char *)inode + ctx->inode_size);
808
809 update_xattr_entry_hashes(ctx->fs, start, end);
810 }
811
update_block_xattr_hashes(struct rewrite_context * ctx,char * block_buf)812 static void update_block_xattr_hashes(struct rewrite_context *ctx,
813 char *block_buf)
814 {
815 struct ext2_ext_attr_header *header;
816 struct ext2_ext_attr_entry *start, *end;
817
818 header = (struct ext2_ext_attr_header *)block_buf;
819 if (header->h_magic != EXT2_EXT_ATTR_MAGIC)
820 return;
821
822 start = (struct ext2_ext_attr_entry *)(header+1);
823 end = (struct ext2_ext_attr_entry *)(block_buf + ctx->fs->blocksize);
824
825 if (update_xattr_entry_hashes(ctx->fs, start, end))
826 ext2fs_ext_attr_block_rehash(header, end);
827 }
828
rewrite_one_inode(struct rewrite_context * ctx,ext2_ino_t ino,struct ext2_inode * inode)829 static void rewrite_one_inode(struct rewrite_context *ctx, ext2_ino_t ino,
830 struct ext2_inode *inode)
831 {
832 blk64_t file_acl_block;
833 errcode_t retval;
834
835 if (!ext2fs_test_inode_bitmap2(ctx->fs->inode_map, ino)) {
836 if (!memcmp(inode, ctx->zero_inode, ctx->inode_size))
837 return;
838 memset(inode, 0, ctx->inode_size);
839 }
840
841 if (inode->i_flags & EXT4_EA_INODE_FL)
842 update_ea_inode_hash(ctx, ino, inode);
843
844 if (ctx->inode_size != EXT2_GOOD_OLD_INODE_SIZE)
845 update_inline_xattr_hashes(ctx,
846 (struct ext2_inode_large *)inode);
847
848 retval = ext2fs_write_inode_full(ctx->fs, ino, inode, ctx->inode_size);
849 if (retval)
850 fatal_err(retval, "while writing inode");
851
852 retval = rewrite_extents(ctx->fs, ino, inode);
853 if (retval)
854 fatal_err(retval, "while rewriting extents");
855
856 if (LINUX_S_ISDIR(inode->i_mode) &&
857 ext2fs_inode_has_valid_blocks2(ctx->fs, inode)) {
858 retval = rewrite_directory(ctx->fs, ino, inode);
859 if (retval)
860 fatal_err(retval, "while rewriting directories");
861 }
862
863 file_acl_block = ext2fs_file_acl_block(ctx->fs, inode);
864 if (!file_acl_block)
865 return;
866
867 retval = ext2fs_read_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
868 ino);
869 if (retval)
870 fatal_err(retval, "while rewriting extended attribute");
871
872 update_block_xattr_hashes(ctx, ctx->ea_buf);
873 retval = ext2fs_write_ext_attr3(ctx->fs, file_acl_block, ctx->ea_buf,
874 ino);
875 if (retval)
876 fatal_err(retval, "while rewriting extended attribute");
877 }
878
879 /*
880 * Forcibly set checksums in all inodes.
881 */
rewrite_inodes(ext2_filsys fs)882 static void rewrite_inodes(ext2_filsys fs)
883 {
884 ext2_inode_scan scan;
885 errcode_t retval;
886 ext2_ino_t ino;
887 struct ext2_inode *inode;
888 int pass;
889 struct rewrite_context ctx = {
890 .fs = fs,
891 .inode_size = EXT2_INODE_SIZE(fs->super),
892 };
893
894 if (fs->super->s_creator_os == EXT2_OS_HURD)
895 return;
896
897 retval = ext2fs_get_mem(ctx.inode_size, &inode);
898 if (retval)
899 fatal_err(retval, "while allocating memory");
900
901 retval = ext2fs_get_memzero(ctx.inode_size, &ctx.zero_inode);
902 if (retval)
903 fatal_err(retval, "while allocating memory");
904
905 retval = ext2fs_get_mem(64 * 1024, &ctx.ea_buf);
906 if (retval)
907 fatal_err(retval, "while allocating memory");
908
909 /*
910 * Extended attribute inodes have a lookup hash that needs to be
911 * recalculated with the new csum_seed. Other inodes referencing xattr
912 * inodes need this value to be up to date. That's why we do two passes:
913 *
914 * pass 1: update xattr inodes to update their lookup hash as well as
915 * other checksums.
916 *
917 * pass 2: go over other inodes to update their checksums.
918 */
919 if (ext2fs_has_feature_ea_inode(fs->super))
920 pass = 1;
921 else
922 pass = 2;
923 for (;pass <= 2; pass++) {
924 retval = ext2fs_open_inode_scan(fs, 0, &scan);
925 if (retval)
926 fatal_err(retval, "while opening inode scan");
927
928 do {
929 retval = ext2fs_get_next_inode_full(scan, &ino, inode,
930 ctx.inode_size);
931 if (retval)
932 fatal_err(retval, "while getting next inode");
933 if (!ino)
934 break;
935
936 if (((pass == 1) &&
937 (inode->i_flags & EXT4_EA_INODE_FL)) ||
938 ((pass == 2) &&
939 !(inode->i_flags & EXT4_EA_INODE_FL)))
940 rewrite_one_inode(&ctx, ino, inode);
941 } while (ino);
942
943 ext2fs_close_inode_scan(scan);
944 }
945
946 ext2fs_free_mem(&ctx.zero_inode);
947 ext2fs_free_mem(&ctx.ea_buf);
948 ext2fs_free_mem(&inode);
949 }
950
rewrite_metadata_checksums(ext2_filsys fs)951 static void rewrite_metadata_checksums(ext2_filsys fs)
952 {
953 errcode_t retval;
954 dgrp_t i;
955
956 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
957 ext2fs_init_csum_seed(fs);
958 for (i = 0; i < fs->group_desc_count; i++)
959 ext2fs_group_desc_csum_set(fs, i);
960 retval = ext2fs_read_bitmaps(fs);
961 if (retval)
962 fatal_err(retval, "while reading bitmaps");
963 rewrite_inodes(fs);
964 ext2fs_mark_ib_dirty(fs);
965 ext2fs_mark_bb_dirty(fs);
966 ext2fs_mmp_update2(fs, 1);
967 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
968 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
969 if (ext2fs_has_feature_metadata_csum(fs->super))
970 fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
971 else
972 fs->super->s_checksum_type = 0;
973 ext2fs_mark_super_dirty(fs);
974 }
975
enable_uninit_bg(ext2_filsys fs)976 static void enable_uninit_bg(ext2_filsys fs)
977 {
978 struct ext2_group_desc *gd;
979 dgrp_t i;
980
981 for (i = 0; i < fs->group_desc_count; i++) {
982 gd = ext2fs_group_desc(fs, fs->group_desc, i);
983 gd->bg_itable_unused = 0;
984 gd->bg_flags = EXT2_BG_INODE_ZEROED;
985 ext2fs_group_desc_csum_set(fs, i);
986 }
987 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
988 }
989
zero_empty_inodes(ext2_filsys fs)990 static errcode_t zero_empty_inodes(ext2_filsys fs)
991 {
992 int length = EXT2_INODE_SIZE(fs->super);
993 struct ext2_inode *inode = NULL;
994 ext2_inode_scan scan;
995 errcode_t retval;
996 ext2_ino_t ino;
997
998 retval = ext2fs_open_inode_scan(fs, 0, &scan);
999 if (retval)
1000 goto out;
1001
1002 retval = ext2fs_get_mem(length, &inode);
1003 if (retval)
1004 goto out;
1005
1006 do {
1007 retval = ext2fs_get_next_inode_full(scan, &ino, inode, length);
1008 if (retval)
1009 goto out;
1010 if (!ino)
1011 break;
1012 if (!ext2fs_test_inode_bitmap2(fs->inode_map, ino)) {
1013 memset(inode, 0, length);
1014 retval = ext2fs_write_inode_full(fs, ino, inode,
1015 length);
1016 if (retval)
1017 goto out;
1018 }
1019 } while (1);
1020
1021 out:
1022 ext2fs_free_mem(&inode);
1023 ext2fs_close_inode_scan(scan);
1024 return retval;
1025 }
1026
disable_uninit_bg(ext2_filsys fs,__u32 csum_feature_flag)1027 static errcode_t disable_uninit_bg(ext2_filsys fs, __u32 csum_feature_flag)
1028 {
1029 struct ext2_group_desc *gd;
1030 dgrp_t i;
1031 errcode_t retval;
1032 blk64_t b, c, d;
1033
1034 /* Load bitmaps to ensure that the uninit ones get written out */
1035 fs->super->s_feature_ro_compat |= csum_feature_flag;
1036 retval = ext2fs_read_bitmaps(fs);
1037 fs->super->s_feature_ro_compat &= ~csum_feature_flag;
1038 if (retval) {
1039 com_err("disable_uninit_bg", retval,
1040 "while reading bitmaps");
1041 request_fsck_afterwards(fs);
1042 return retval;
1043 }
1044 ext2fs_mark_ib_dirty(fs);
1045 ext2fs_mark_bb_dirty(fs);
1046
1047 /* If we're only turning off uninit_bg, zero the inodes */
1048 if (csum_feature_flag == EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
1049 retval = zero_empty_inodes(fs);
1050 if (retval) {
1051 com_err("disable_uninit_bg", retval,
1052 "while zeroing unused inodes");
1053 request_fsck_afterwards(fs);
1054 return retval;
1055 }
1056 }
1057
1058 /* The bbitmap is zeroed; we must mark group metadata blocks in use */
1059 for (i = 0; i < fs->group_desc_count; i++) {
1060 b = ext2fs_block_bitmap_loc(fs, i);
1061 ext2fs_mark_block_bitmap2(fs->block_map, b);
1062 b = ext2fs_inode_bitmap_loc(fs, i);
1063 ext2fs_mark_block_bitmap2(fs->block_map, b);
1064
1065 retval = ext2fs_super_and_bgd_loc2(fs, i, &b, &c, &d, NULL);
1066 if (retval == 0 && b)
1067 ext2fs_mark_block_bitmap2(fs->block_map, b);
1068 if (retval == 0 && c)
1069 ext2fs_mark_block_bitmap2(fs->block_map, c);
1070 if (retval == 0 && d)
1071 ext2fs_mark_block_bitmap2(fs->block_map, d);
1072 if (retval) {
1073 com_err("disable_uninit_bg", retval,
1074 "while initializing block bitmaps");
1075 request_fsck_afterwards(fs);
1076 }
1077
1078 gd = ext2fs_group_desc(fs, fs->group_desc, i);
1079 gd->bg_itable_unused = 0;
1080 gd->bg_flags = 0;
1081 ext2fs_group_desc_csum_set(fs, i);
1082 }
1083 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1084 ext2fs_mark_super_dirty(fs);
1085
1086 return 0;
1087 }
1088
1089 static void
try_confirm_csum_seed_support(void)1090 try_confirm_csum_seed_support(void)
1091 {
1092 if (access("/sys/fs/ext4/features/metadata_csum_seed", R_OK))
1093 fputs(_("WARNING: Could not confirm kernel support for "
1094 "metadata_csum_seed.\n This requires Linux >= "
1095 "v4.4.\n"), stderr);
1096 }
1097
1098 /*
1099 * Update the feature set as provided by the user.
1100 */
update_feature_set(ext2_filsys fs,char * features)1101 static int update_feature_set(ext2_filsys fs, char *features)
1102 {
1103 struct ext2_super_block *sb = fs->super;
1104 __u32 old_features[3];
1105 int type_err;
1106 unsigned int mask_err;
1107 errcode_t err;
1108 enum quota_type qtype;
1109
1110 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
1111 ((&sb->s_feature_compat)[(type)] & (mask)))
1112 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
1113 !((&sb->s_feature_compat)[(type)] & (mask)))
1114 #define FEATURE_CHANGED(type, mask) ((mask) & \
1115 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
1116
1117 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
1118 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
1119 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
1120
1121 if (e2p_edit_feature2(features, &sb->s_feature_compat,
1122 ok_features, clear_ok_features,
1123 &type_err, &mask_err)) {
1124 if (!mask_err)
1125 fprintf(stderr,
1126 _("Invalid filesystem option set: %s\n"),
1127 features);
1128 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
1129 fprintf(stderr, _("Clearing filesystem feature '%s' "
1130 "not supported.\n"),
1131 e2p_feature2string(type_err &
1132 E2P_FEATURE_TYPE_MASK,
1133 mask_err));
1134 else
1135 fprintf(stderr, _("Setting filesystem feature '%s' "
1136 "not supported.\n"),
1137 e2p_feature2string(type_err, mask_err));
1138 return 1;
1139 }
1140
1141 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1142 if ((mount_flags & EXT2_MF_MOUNTED) &&
1143 !(mount_flags & EXT2_MF_READONLY)) {
1144 fputs(_("The has_journal feature may only be "
1145 "cleared when the filesystem is\n"
1146 "unmounted or mounted "
1147 "read-only.\n"), stderr);
1148 return 1;
1149 }
1150 if (ext2fs_has_feature_journal_needs_recovery(sb) &&
1151 f_flag < 2) {
1152 fputs(_("The needs_recovery flag is set. "
1153 "Please run e2fsck before clearing\n"
1154 "the has_journal flag.\n"), stderr);
1155 return 1;
1156 }
1157 if (sb->s_journal_inum) {
1158 if (remove_journal_inode(fs))
1159 return 1;
1160 }
1161 if (sb->s_journal_dev) {
1162 if (remove_journal_device(fs))
1163 return 1;
1164 }
1165 }
1166
1167 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1168 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
1169 if (ext2fs_has_feature_meta_bg(sb)) {
1170 fputs(_("Setting filesystem feature 'sparse_super' "
1171 "not supported\nfor filesystems with "
1172 "the meta_bg feature enabled.\n"),
1173 stderr);
1174 return 1;
1175 }
1176 }
1177
1178 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1179 int error;
1180
1181 if ((mount_flags & EXT2_MF_MOUNTED) ||
1182 (mount_flags & EXT2_MF_READONLY)) {
1183 fputs(_("The multiple mount protection feature can't\n"
1184 "be set if the filesystem is mounted or\n"
1185 "read-only.\n"), stderr);
1186 return 1;
1187 }
1188
1189 error = ext2fs_mmp_init(fs);
1190 if (error) {
1191 fputs(_("\nError while enabling multiple mount "
1192 "protection feature."), stderr);
1193 return 1;
1194 }
1195
1196 /*
1197 * We want to update group desc with the new free blocks count
1198 */
1199 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1200
1201 printf(_("Multiple mount protection has been enabled "
1202 "with update interval %ds.\n"),
1203 sb->s_mmp_update_interval);
1204 }
1205
1206 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_MMP)) {
1207 int error;
1208
1209 if (mount_flags & EXT2_MF_READONLY) {
1210 fputs(_("The multiple mount protection feature cannot\n"
1211 "be disabled if the filesystem is readonly.\n"),
1212 stderr);
1213 return 1;
1214 }
1215
1216 error = ext2fs_read_bitmaps(fs);
1217 if (error) {
1218 fputs(_("Error while reading bitmaps\n"), stderr);
1219 return 1;
1220 }
1221
1222 error = ext2fs_mmp_read(fs, sb->s_mmp_block, NULL);
1223 if (error) {
1224 struct mmp_struct *mmp_cmp = fs->mmp_cmp;
1225
1226 if (error == EXT2_ET_MMP_MAGIC_INVALID)
1227 printf(_("Magic number in MMP block does not "
1228 "match. expected: %x, actual: %x\n"),
1229 EXT4_MMP_MAGIC, mmp_cmp->mmp_magic);
1230 else
1231 com_err(program_name, error, "%s",
1232 _("while reading MMP block."));
1233 goto mmp_error;
1234 }
1235
1236 /* We need to force out the group descriptors as well */
1237 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1238 ext2fs_block_alloc_stats2(fs, sb->s_mmp_block, -1);
1239 mmp_error:
1240 sb->s_mmp_block = 0;
1241 sb->s_mmp_update_interval = 0;
1242 }
1243
1244 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
1245 /*
1246 * If adding a journal flag, let the create journal
1247 * code below handle setting the flag and creating the
1248 * journal. We supply a default size if necessary.
1249 */
1250 if (!journal_size)
1251 journal_size = -1;
1252 ext2fs_clear_feature_journal(sb);
1253 }
1254
1255 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
1256 if (!sb->s_def_hash_version)
1257 sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
1258 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
1259 uuid_generate((unsigned char *) sb->s_hash_seed);
1260 }
1261
1262 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
1263 if (ext2fs_check_desc(fs)) {
1264 fputs(_("Clearing the flex_bg flag would "
1265 "cause the the filesystem to be\n"
1266 "inconsistent.\n"), stderr);
1267 return 1;
1268 }
1269 }
1270
1271 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1272 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
1273 if ((mount_flags & EXT2_MF_MOUNTED) &&
1274 !(mount_flags & EXT2_MF_READONLY)) {
1275 fputs(_("The huge_file feature may only be "
1276 "cleared when the filesystem is\n"
1277 "unmounted or mounted "
1278 "read-only.\n"), stderr);
1279 return 1;
1280 }
1281 }
1282
1283 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1284 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1285 check_fsck_needed(fs,
1286 _("Enabling checksums could take some time."));
1287 if (mount_flags & EXT2_MF_MOUNTED) {
1288 fputs(_("Cannot enable metadata_csum on a mounted "
1289 "filesystem!\n"), stderr);
1290 exit(1);
1291 }
1292 if (!ext2fs_has_feature_extents(fs->super))
1293 printf("%s",
1294 _("Extents are not enabled. The file extent "
1295 "tree can be checksummed, whereas block maps "
1296 "cannot. Not enabling extents reduces the "
1297 "coverage of metadata checksumming. "
1298 "Re-run with -O extent to rectify.\n"));
1299 if (!ext2fs_has_feature_64bit(fs->super))
1300 printf("%s",
1301 _("64-bit filesystem support is not enabled. "
1302 "The larger fields afforded by this feature "
1303 "enable full-strength checksumming. "
1304 "Run resize2fs -b to rectify.\n"));
1305 rewrite_checksums = 1;
1306 /* metadata_csum supersedes uninit_bg */
1307 ext2fs_clear_feature_gdt_csum(fs->super);
1308
1309 /* if uninit_bg was previously off, rewrite group desc */
1310 if (!(old_features[E2P_FEATURE_RO_INCOMPAT] &
1311 EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
1312 enable_uninit_bg(fs);
1313
1314 /*
1315 * Since metadata_csum supersedes uninit_bg, pretend like
1316 * uninit_bg has been off all along.
1317 */
1318 old_features[E2P_FEATURE_RO_INCOMPAT] &=
1319 ~EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1320 }
1321
1322 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1323 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) {
1324 __u32 test_features[3];
1325
1326 check_fsck_needed(fs,
1327 _("Disabling checksums could take some time."));
1328 if (mount_flags & EXT2_MF_MOUNTED) {
1329 fputs(_("Cannot disable metadata_csum on a mounted "
1330 "filesystem!\n"), stderr);
1331 exit(1);
1332 }
1333 rewrite_checksums = 1;
1334
1335 /* Enable uninit_bg unless the user expressly turned it off */
1336 memcpy(test_features, old_features, sizeof(test_features));
1337 test_features[E2P_FEATURE_RO_INCOMPAT] |=
1338 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1339 e2p_edit_feature2(features, test_features, ok_features,
1340 clear_ok_features, NULL, NULL);
1341 if (test_features[E2P_FEATURE_RO_INCOMPAT] &
1342 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
1343 ext2fs_set_feature_gdt_csum(fs->super);
1344
1345 /*
1346 * If we're turning off metadata_csum and not turning on
1347 * uninit_bg, rewrite group desc.
1348 */
1349 if (!ext2fs_has_feature_gdt_csum(fs->super)) {
1350 err = disable_uninit_bg(fs,
1351 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM);
1352 if (err)
1353 return 1;
1354 } else
1355 /*
1356 * metadata_csum previously provided uninit_bg, so if
1357 * we're also setting the uninit_bg feature bit,
1358 * pretend like it was previously enabled. Checksums
1359 * will be rewritten with crc16 later.
1360 */
1361 old_features[E2P_FEATURE_RO_INCOMPAT] |=
1362 EXT4_FEATURE_RO_COMPAT_GDT_CSUM;
1363 fs->super->s_checksum_seed = 0;
1364 ext2fs_clear_feature_csum_seed(fs->super);
1365 }
1366
1367 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1368 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1369 /* Do not enable uninit_bg when metadata_csum enabled */
1370 if (ext2fs_has_feature_metadata_csum(fs->super))
1371 ext2fs_clear_feature_gdt_csum(fs->super);
1372 else
1373 enable_uninit_bg(fs);
1374 }
1375
1376 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1377 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
1378 err = disable_uninit_bg(fs,
1379 EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
1380 if (err)
1381 return 1;
1382 }
1383
1384 /*
1385 * We don't actually toggle 64bit; resize2fs does that. But this
1386 * must come after the metadata_csum feature_on so that it won't
1387 * complain about the lack of 64bit.
1388 */
1389 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1390 EXT4_FEATURE_INCOMPAT_64BIT)) {
1391 if (mount_flags & EXT2_MF_MOUNTED) {
1392 fprintf(stderr, _("Cannot enable 64-bit mode "
1393 "while mounted!\n"));
1394 exit(1);
1395 }
1396 ext2fs_clear_feature_64bit(sb);
1397 feature_64bit = 1;
1398 }
1399 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1400 EXT4_FEATURE_INCOMPAT_64BIT)) {
1401 if (mount_flags & EXT2_MF_MOUNTED) {
1402 fprintf(stderr, _("Cannot disable 64-bit mode "
1403 "while mounted!\n"));
1404 exit(1);
1405 }
1406 ext2fs_set_feature_64bit(sb);
1407 feature_64bit = -1;
1408 }
1409
1410 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1411 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1412 /*
1413 * Set the Q_flag here and handle the quota options in the code
1414 * below.
1415 */
1416 if (!Q_flag) {
1417 Q_flag = 1;
1418 /* Enable usr/grp quota by default */
1419 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1420 if (qtype != PRJQUOTA)
1421 quota_enable[qtype] = QOPT_ENABLE;
1422 else
1423 quota_enable[qtype] = QOPT_DISABLE;
1424 }
1425 }
1426 ext2fs_clear_feature_quota(sb);
1427 }
1428
1429 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
1430 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1431 if (fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1432 fprintf(stderr, _("Cannot enable project feature; "
1433 "inode size too small.\n"));
1434 exit(1);
1435 }
1436 Q_flag = 1;
1437 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1438 }
1439
1440 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1441 EXT4_FEATURE_RO_COMPAT_PROJECT)) {
1442 Q_flag = 1;
1443 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1444 }
1445
1446 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1447 EXT4_FEATURE_RO_COMPAT_QUOTA)) {
1448 /*
1449 * Set the Q_flag here and handle the quota options in the code
1450 * below.
1451 */
1452 if (Q_flag)
1453 fputs(_("\nWarning: '^quota' option overrides '-Q'"
1454 "arguments.\n"), stderr);
1455 Q_flag = 1;
1456 /* Disable all quota by default */
1457 for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1458 quota_enable[qtype] = QOPT_DISABLE;
1459 }
1460
1461 if (FEATURE_ON(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_ENCRYPT)) {
1462 fs->super->s_encrypt_algos[0] =
1463 EXT4_ENCRYPTION_MODE_AES_256_XTS;
1464 fs->super->s_encrypt_algos[1] =
1465 EXT4_ENCRYPTION_MODE_AES_256_CTS;
1466 }
1467
1468 if (FEATURE_ON(E2P_FEATURE_INCOMPAT,
1469 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1470 if (!ext2fs_has_feature_metadata_csum(sb)) {
1471 fputs(_("Setting feature 'metadata_csum_seed' "
1472 "is only supported\non filesystems with "
1473 "the metadata_csum feature enabled.\n"),
1474 stderr);
1475 return 1;
1476 }
1477 try_confirm_csum_seed_support();
1478 fs->super->s_checksum_seed = fs->csum_seed;
1479 }
1480
1481 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT,
1482 EXT4_FEATURE_INCOMPAT_CSUM_SEED)) {
1483 __le32 uuid_seed;
1484
1485 uuid_seed = ext2fs_crc32c_le(~0, fs->super->s_uuid,
1486 sizeof(fs->super->s_uuid));
1487 if (fs->super->s_checksum_seed != uuid_seed) {
1488 if (mount_flags & (EXT2_MF_BUSY|EXT2_MF_MOUNTED)) {
1489 fputs(_("UUID has changed since enabling "
1490 "metadata_csum. Filesystem must be unmounted "
1491 "\nto safely rewrite all metadata to match the new UUID.\n"),
1492 stderr);
1493 return 1;
1494 }
1495 check_fsck_needed(fs, _("Recalculating checksums "
1496 "could take some time."));
1497 rewrite_checksums = 1;
1498 }
1499 }
1500
1501 if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
1502 (sb->s_feature_compat || sb->s_feature_ro_compat ||
1503 sb->s_feature_incompat))
1504 ext2fs_update_dynamic_rev(fs);
1505
1506 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
1507 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
1508 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1509 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
1510 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
1511 EXT2_FEATURE_INCOMPAT_FILETYPE) ||
1512 FEATURE_CHANGED(E2P_FEATURE_COMPAT,
1513 EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
1514 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
1515 EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
1516 request_fsck_afterwards(fs);
1517
1518 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
1519 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
1520 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
1521 ext2fs_mark_super_dirty(fs);
1522
1523 return 0;
1524 }
1525
1526 /*
1527 * Add a journal to the filesystem.
1528 */
add_journal(ext2_filsys fs)1529 static int add_journal(ext2_filsys fs)
1530 {
1531 unsigned long journal_blocks;
1532 errcode_t retval;
1533 ext2_filsys jfs;
1534 io_manager io_ptr;
1535
1536 if (ext2fs_has_feature_journal(fs->super)) {
1537 fputs(_("The filesystem already has a journal.\n"), stderr);
1538 goto err;
1539 }
1540 if (journal_device) {
1541 if (!check_plausibility(journal_device, CHECK_BLOCK_DEV,
1542 NULL))
1543 proceed_question(-1);
1544 check_mount(journal_device, 0, _("journal"));
1545 #ifdef CONFIG_TESTIO_DEBUG
1546 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1547 io_ptr = test_io_manager;
1548 test_io_backing_manager = unix_io_manager;
1549 } else
1550 #endif
1551 io_ptr = unix_io_manager;
1552 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
1553 EXT2_FLAG_JOURNAL_DEV_OK, 0,
1554 fs->blocksize, io_ptr, &jfs);
1555 if (retval) {
1556 com_err(program_name, retval,
1557 _("\n\twhile trying to open journal on %s\n"),
1558 journal_device);
1559 goto err;
1560 }
1561 printf(_("Creating journal on device %s: "),
1562 journal_device);
1563 fflush(stdout);
1564
1565 retval = ext2fs_add_journal_device(fs, jfs);
1566 ext2fs_close_free(&jfs);
1567 if (retval) {
1568 com_err(program_name, retval,
1569 _("while adding filesystem to journal on %s"),
1570 journal_device);
1571 goto err;
1572 }
1573 fputs(_("done\n"), stdout);
1574 } else if (journal_size) {
1575 fputs(_("Creating journal inode: "), stdout);
1576 fflush(stdout);
1577 journal_blocks = figure_journal_size(journal_size, fs);
1578
1579 if (journal_location_string)
1580 journal_location =
1581 parse_num_blocks2(journal_location_string,
1582 fs->super->s_log_block_size);
1583 retval = ext2fs_add_journal_inode2(fs, journal_blocks,
1584 journal_location,
1585 journal_flags);
1586 if (retval) {
1587 fprintf(stderr, "\n");
1588 com_err(program_name, retval, "%s",
1589 _("\n\twhile trying to create journal file"));
1590 return retval;
1591 } else
1592 fputs(_("done\n"), stdout);
1593 /*
1594 * If the filesystem wasn't mounted, we need to force
1595 * the block group descriptors out.
1596 */
1597 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
1598 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1599 }
1600 print_check_message(fs->super->s_max_mnt_count,
1601 fs->super->s_checkinterval);
1602 return 0;
1603
1604 err:
1605 free(journal_device);
1606 return 1;
1607 }
1608
handle_quota_options(ext2_filsys fs)1609 static void handle_quota_options(ext2_filsys fs)
1610 {
1611 errcode_t retval;
1612 quota_ctx_t qctx;
1613 ext2_ino_t qf_ino;
1614 enum quota_type qtype;
1615 unsigned int qtype_bits = 0;
1616 int need_dirty = 0;
1617
1618 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1619 if (quota_enable[qtype] != 0)
1620 break;
1621 if (qtype == MAXQUOTAS)
1622 /* Nothing to do. */
1623 return;
1624
1625 if (quota_enable[PRJQUOTA] == QOPT_ENABLE &&
1626 fs->super->s_inode_size == EXT2_GOOD_OLD_INODE_SIZE) {
1627 fprintf(stderr, _("Cannot enable project quota; "
1628 "inode size too small.\n"));
1629 exit(1);
1630 }
1631
1632 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1633 if (quota_enable[qtype] == QOPT_ENABLE)
1634 qtype_bits |= 1 << qtype;
1635 }
1636
1637 retval = quota_init_context(&qctx, fs, qtype_bits);
1638 if (retval) {
1639 com_err(program_name, retval,
1640 _("while initializing quota context in support library"));
1641 exit(1);
1642 }
1643
1644 if (qtype_bits)
1645 quota_compute_usage(qctx);
1646
1647 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++) {
1648 if (quota_enable[qtype] == QOPT_ENABLE &&
1649 *quota_sb_inump(fs->super, qtype) == 0) {
1650 if ((qf_ino = quota_file_exists(fs, qtype)) > 0) {
1651 retval = quota_update_limits(qctx, qf_ino,
1652 qtype);
1653 if (retval) {
1654 com_err(program_name, retval,
1655 _("while updating quota limits (%d)"),
1656 qtype);
1657 exit(1);
1658 }
1659 }
1660 retval = quota_write_inode(qctx, 1 << qtype);
1661 if (retval) {
1662 com_err(program_name, retval,
1663 _("while writing quota file (%d)"),
1664 qtype);
1665 exit(1);
1666 }
1667 /* Enable Quota feature if one of quota enabled */
1668 if (!ext2fs_has_feature_quota(fs->super)) {
1669 ext2fs_set_feature_quota(fs->super);
1670 need_dirty = 1;
1671 }
1672 if (qtype == PRJQUOTA &&
1673 !ext2fs_has_feature_project(fs->super)) {
1674 ext2fs_set_feature_project(fs->super);
1675 need_dirty = 1;
1676 }
1677 } else if (quota_enable[qtype] == QOPT_DISABLE) {
1678 retval = quota_remove_inode(fs, qtype);
1679 if (retval) {
1680 com_err(program_name, retval,
1681 _("while removing quota file (%d)"),
1682 qtype);
1683 exit(1);
1684 }
1685 if (qtype == PRJQUOTA) {
1686 ext2fs_clear_feature_project(fs->super);
1687 need_dirty = 1;
1688 }
1689 }
1690 }
1691
1692 quota_release_context(&qctx);
1693 /* Clear Quota feature if all quota types disabled. */
1694 if (!qtype_bits) {
1695 for (qtype = 0 ; qtype < MAXQUOTAS; qtype++)
1696 if (*quota_sb_inump(fs->super, qtype))
1697 break;
1698 if (qtype == MAXQUOTAS) {
1699 ext2fs_clear_feature_quota(fs->super);
1700 need_dirty = 1;
1701 }
1702
1703 }
1704 if (need_dirty)
1705 ext2fs_mark_super_dirty(fs);
1706 return;
1707 }
1708
option_handle_function(char * token)1709 static int option_handle_function(char *token)
1710 {
1711 if (strncmp(token, "usr", 3) == 0) {
1712 quota_enable[USRQUOTA] = QOPT_ENABLE;
1713 } else if (strncmp(token, "^usr", 4) == 0) {
1714 quota_enable[USRQUOTA] = QOPT_DISABLE;
1715 } else if (strncmp(token, "grp", 3) == 0) {
1716 quota_enable[GRPQUOTA] = QOPT_ENABLE;
1717 } else if (strncmp(token, "^grp", 4) == 0) {
1718 quota_enable[GRPQUOTA] = QOPT_DISABLE;
1719 } else if (strncmp(token, "prj", 3) == 0) {
1720 quota_enable[PRJQUOTA] = QOPT_ENABLE;
1721 } else if (strncmp(token, "^prj", 4) == 0) {
1722 quota_enable[PRJQUOTA] = QOPT_DISABLE;
1723 } else {
1724 fputs(_("\nBad quota options specified.\n\n"
1725 "Following valid quota options are available "
1726 "(pass by separating with comma):\n"
1727 "\t[^]usr[quota]\n"
1728 "\t[^]grp[quota]\n"
1729 "\t[^]prj[quota]\n"
1730 "\n\n"), stderr);
1731 return 1;
1732 }
1733 return 0;
1734 }
1735
parse_e2label_options(int argc,char ** argv)1736 static void parse_e2label_options(int argc, char ** argv)
1737 {
1738 if ((argc < 2) || (argc > 3)) {
1739 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
1740 exit(1);
1741 }
1742 io_options = strchr(argv[1], '?');
1743 if (io_options)
1744 *io_options++ = 0;
1745 device_name = blkid_get_devname(NULL, argv[1], NULL);
1746 if (!device_name) {
1747 com_err("e2label", 0, _("Unable to resolve '%s'"),
1748 argv[1]);
1749 exit(1);
1750 }
1751 open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
1752 if (argc == 3) {
1753 open_flag |= EXT2_FLAG_RW;
1754 L_flag = 1;
1755 new_label = argv[2];
1756 } else
1757 print_label++;
1758 }
1759
parse_time(char * str)1760 static time_t parse_time(char *str)
1761 {
1762 struct tm ts;
1763
1764 if (strcmp(str, "now") == 0) {
1765 return (time(0));
1766 }
1767 memset(&ts, 0, sizeof(ts));
1768 #ifdef HAVE_STRPTIME
1769 strptime(str, "%Y%m%d%H%M%S", &ts);
1770 #else
1771 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
1772 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
1773 ts.tm_year -= 1900;
1774 ts.tm_mon -= 1;
1775 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
1776 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
1777 ts.tm_min > 59 || ts.tm_sec > 61)
1778 ts.tm_mday = 0;
1779 #endif
1780 if (ts.tm_mday == 0) {
1781 com_err(program_name, 0,
1782 _("Couldn't parse date/time specifier: %s"),
1783 str);
1784 usage();
1785 }
1786 ts.tm_isdst = -1;
1787 return (mktime(&ts));
1788 }
1789
parse_tune2fs_options(int argc,char ** argv)1790 static void parse_tune2fs_options(int argc, char **argv)
1791 {
1792 int c;
1793 char *tmp;
1794 struct group *gr;
1795 struct passwd *pw;
1796 int ret;
1797 char optstring[100] = "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:z:Q:";
1798
1799 open_flag = 0;
1800 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
1801 while ((c = getopt(argc, argv, optstring)) != EOF)
1802 switch (c) {
1803 case 'c':
1804 max_mount_count = strtol(optarg, &tmp, 0);
1805 if (*tmp || max_mount_count > 16000) {
1806 com_err(program_name, 0,
1807 _("bad mounts count - %s"),
1808 optarg);
1809 usage();
1810 }
1811 if (max_mount_count == 0)
1812 max_mount_count = -1;
1813 c_flag = 1;
1814 open_flag = EXT2_FLAG_RW;
1815 break;
1816 case 'C':
1817 mount_count = strtoul(optarg, &tmp, 0);
1818 if (*tmp || mount_count > 16000) {
1819 com_err(program_name, 0,
1820 _("bad mounts count - %s"),
1821 optarg);
1822 usage();
1823 }
1824 C_flag = 1;
1825 open_flag = EXT2_FLAG_RW;
1826 break;
1827 case 'e':
1828 if (strcmp(optarg, "continue") == 0)
1829 errors = EXT2_ERRORS_CONTINUE;
1830 else if (strcmp(optarg, "remount-ro") == 0)
1831 errors = EXT2_ERRORS_RO;
1832 else if (strcmp(optarg, "panic") == 0)
1833 errors = EXT2_ERRORS_PANIC;
1834 else {
1835 com_err(program_name, 0,
1836 _("bad error behavior - %s"),
1837 optarg);
1838 usage();
1839 }
1840 e_flag = 1;
1841 open_flag = EXT2_FLAG_RW;
1842 break;
1843 case 'E':
1844 extended_cmd = optarg;
1845 open_flag |= EXT2_FLAG_RW;
1846 break;
1847 case 'f': /* Force */
1848 f_flag++;
1849 break;
1850 case 'g':
1851 resgid = strtoul(optarg, &tmp, 0);
1852 if (*tmp) {
1853 gr = getgrnam(optarg);
1854 if (gr == NULL)
1855 tmp = optarg;
1856 else {
1857 resgid = gr->gr_gid;
1858 *tmp = 0;
1859 }
1860 }
1861 if (*tmp) {
1862 com_err(program_name, 0,
1863 _("bad gid/group name - %s"),
1864 optarg);
1865 usage();
1866 }
1867 g_flag = 1;
1868 open_flag = EXT2_FLAG_RW;
1869 break;
1870 case 'i':
1871 interval = strtoul(optarg, &tmp, 0);
1872 switch (*tmp) {
1873 case 's':
1874 tmp++;
1875 break;
1876 case '\0':
1877 case 'd':
1878 case 'D': /* days */
1879 interval *= 86400;
1880 if (*tmp != '\0')
1881 tmp++;
1882 break;
1883 case 'm':
1884 case 'M': /* months! */
1885 interval *= 86400 * 30;
1886 tmp++;
1887 break;
1888 case 'w':
1889 case 'W': /* weeks */
1890 interval *= 86400 * 7;
1891 tmp++;
1892 break;
1893 }
1894 if (*tmp) {
1895 com_err(program_name, 0,
1896 _("bad interval - %s"), optarg);
1897 usage();
1898 }
1899 i_flag = 1;
1900 open_flag = EXT2_FLAG_RW;
1901 break;
1902 case 'j':
1903 if (!journal_size)
1904 journal_size = -1;
1905 open_flag = EXT2_FLAG_RW;
1906 break;
1907 case 'J':
1908 parse_journal_opts(optarg);
1909 open_flag = EXT2_FLAG_RW;
1910 break;
1911 case 'l':
1912 l_flag = 1;
1913 break;
1914 case 'L':
1915 new_label = optarg;
1916 L_flag = 1;
1917 open_flag |= EXT2_FLAG_RW |
1918 EXT2_FLAG_JOURNAL_DEV_OK;
1919 break;
1920 case 'm':
1921 reserved_ratio = strtod(optarg, &tmp);
1922 if (*tmp || reserved_ratio > 50 ||
1923 reserved_ratio < 0) {
1924 com_err(program_name, 0,
1925 _("bad reserved block ratio - %s"),
1926 optarg);
1927 usage();
1928 }
1929 m_flag = 1;
1930 open_flag = EXT2_FLAG_RW;
1931 break;
1932 case 'M':
1933 new_last_mounted = optarg;
1934 M_flag = 1;
1935 open_flag = EXT2_FLAG_RW;
1936 break;
1937 case 'o':
1938 if (mntopts_cmd) {
1939 com_err(program_name, 0, "%s",
1940 _("-o may only be specified once"));
1941 usage();
1942 }
1943 mntopts_cmd = optarg;
1944 open_flag = EXT2_FLAG_RW;
1945 break;
1946 case 'O':
1947 if (features_cmd) {
1948 com_err(program_name, 0, "%s",
1949 _("-O may only be specified once"));
1950 usage();
1951 }
1952 features_cmd = optarg;
1953 open_flag = EXT2_FLAG_RW;
1954 break;
1955 case 'Q':
1956 Q_flag = 1;
1957 ret = parse_quota_opts(optarg, option_handle_function);
1958 if (ret)
1959 exit(1);
1960 open_flag = EXT2_FLAG_RW;
1961 break;
1962 case 'r':
1963 reserved_blocks = strtoul(optarg, &tmp, 0);
1964 if (*tmp) {
1965 com_err(program_name, 0,
1966 _("bad reserved blocks count - %s"),
1967 optarg);
1968 usage();
1969 }
1970 r_flag = 1;
1971 open_flag = EXT2_FLAG_RW;
1972 break;
1973 case 's': /* Deprecated */
1974 s_flag = atoi(optarg);
1975 open_flag = EXT2_FLAG_RW;
1976 break;
1977 case 'T':
1978 T_flag = 1;
1979 last_check_time = parse_time(optarg);
1980 open_flag = EXT2_FLAG_RW;
1981 break;
1982 case 'u':
1983 resuid = strtoul(optarg, &tmp, 0);
1984 if (*tmp) {
1985 pw = getpwnam(optarg);
1986 if (pw == NULL)
1987 tmp = optarg;
1988 else {
1989 resuid = pw->pw_uid;
1990 *tmp = 0;
1991 }
1992 }
1993 if (*tmp) {
1994 com_err(program_name, 0,
1995 _("bad uid/user name - %s"),
1996 optarg);
1997 usage();
1998 }
1999 u_flag = 1;
2000 open_flag = EXT2_FLAG_RW;
2001 break;
2002 case 'U':
2003 new_UUID = optarg;
2004 U_flag = 1;
2005 open_flag = EXT2_FLAG_RW |
2006 EXT2_FLAG_JOURNAL_DEV_OK;
2007 break;
2008 case 'I':
2009 new_inode_size = strtoul(optarg, &tmp, 0);
2010 if (*tmp) {
2011 com_err(program_name, 0,
2012 _("bad inode size - %s"),
2013 optarg);
2014 usage();
2015 }
2016 if (!((new_inode_size &
2017 (new_inode_size - 1)) == 0)) {
2018 com_err(program_name, 0,
2019 _("Inode size must be a "
2020 "power of two- %s"),
2021 optarg);
2022 usage();
2023 }
2024 open_flag = EXT2_FLAG_RW;
2025 I_flag = 1;
2026 break;
2027 case 'z':
2028 undo_file = optarg;
2029 break;
2030 default:
2031 usage();
2032 }
2033 if (optind < argc - 1 || optind == argc)
2034 usage();
2035 if (!open_flag && !l_flag)
2036 usage();
2037 io_options = strchr(argv[optind], '?');
2038 if (io_options)
2039 *io_options++ = 0;
2040 device_name = blkid_get_devname(NULL, argv[optind], NULL);
2041 if (!device_name) {
2042 com_err(program_name, 0, _("Unable to resolve '%s'"),
2043 argv[optind]);
2044 exit(1);
2045 }
2046 }
2047
2048 #ifdef CONFIG_BUILD_FINDFS
do_findfs(int argc,char ** argv)2049 void do_findfs(int argc, char **argv)
2050 {
2051 char *dev;
2052
2053 if ((argc != 2) ||
2054 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
2055 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
2056 exit(2);
2057 }
2058 dev = blkid_get_devname(NULL, argv[1], NULL);
2059 if (!dev) {
2060 com_err("findfs", 0, _("Unable to resolve '%s'"),
2061 argv[1]);
2062 exit(1);
2063 }
2064 puts(dev);
2065 exit(0);
2066 }
2067 #endif
2068
parse_extended_opts(ext2_filsys fs,const char * opts)2069 static int parse_extended_opts(ext2_filsys fs, const char *opts)
2070 {
2071 char *buf, *token, *next, *p, *arg;
2072 int len, hash_alg;
2073 int r_usage = 0;
2074
2075 len = strlen(opts);
2076 buf = malloc(len+1);
2077 if (!buf) {
2078 fprintf(stderr, "%s",
2079 _("Couldn't allocate memory to parse options!\n"));
2080 return 1;
2081 }
2082 strcpy(buf, opts);
2083 for (token = buf; token && *token; token = next) {
2084 p = strchr(token, ',');
2085 next = 0;
2086 if (p) {
2087 *p = 0;
2088 next = p+1;
2089 }
2090 arg = strchr(token, '=');
2091 if (arg) {
2092 *arg = 0;
2093 arg++;
2094 }
2095 if (strcmp(token, "clear-mmp") == 0 ||
2096 strcmp(token, "clear_mmp") == 0) {
2097 clear_mmp = 1;
2098 } else if (strcmp(token, "mmp_update_interval") == 0) {
2099 unsigned long intv;
2100 if (!arg) {
2101 r_usage++;
2102 continue;
2103 }
2104 intv = strtoul(arg, &p, 0);
2105 if (*p) {
2106 fprintf(stderr,
2107 _("Invalid mmp_update_interval: %s\n"),
2108 arg);
2109 r_usage++;
2110 continue;
2111 }
2112 if (intv == 0) {
2113 intv = EXT4_MMP_UPDATE_INTERVAL;
2114 } else if (intv > EXT4_MMP_MAX_UPDATE_INTERVAL) {
2115 fprintf(stderr,
2116 _("mmp_update_interval too big: %lu\n"),
2117 intv);
2118 r_usage++;
2119 continue;
2120 }
2121 printf(P_("Setting multiple mount protection update "
2122 "interval to %lu second\n",
2123 "Setting multiple mount protection update "
2124 "interval to %lu seconds\n", intv),
2125 intv);
2126 fs->super->s_mmp_update_interval = intv;
2127 ext2fs_mark_super_dirty(fs);
2128 } else if (!strcmp(token, "force_fsck")) {
2129 fs->super->s_state |= EXT2_ERROR_FS;
2130 printf(_("Setting filesystem error flag to force fsck.\n"));
2131 ext2fs_mark_super_dirty(fs);
2132 } else if (!strcmp(token, "test_fs")) {
2133 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
2134 printf("Setting test filesystem flag\n");
2135 ext2fs_mark_super_dirty(fs);
2136 } else if (!strcmp(token, "^test_fs")) {
2137 fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
2138 printf("Clearing test filesystem flag\n");
2139 ext2fs_mark_super_dirty(fs);
2140 } else if (strcmp(token, "stride") == 0) {
2141 if (!arg) {
2142 r_usage++;
2143 continue;
2144 }
2145 stride = strtoul(arg, &p, 0);
2146 if (*p) {
2147 fprintf(stderr,
2148 _("Invalid RAID stride: %s\n"),
2149 arg);
2150 r_usage++;
2151 continue;
2152 }
2153 stride_set = 1;
2154 } else if (strcmp(token, "stripe-width") == 0 ||
2155 strcmp(token, "stripe_width") == 0) {
2156 if (!arg) {
2157 r_usage++;
2158 continue;
2159 }
2160 stripe_width = strtoul(arg, &p, 0);
2161 if (*p) {
2162 fprintf(stderr,
2163 _("Invalid RAID stripe-width: %s\n"),
2164 arg);
2165 r_usage++;
2166 continue;
2167 }
2168 stripe_width_set = 1;
2169 } else if (strcmp(token, "hash_alg") == 0 ||
2170 strcmp(token, "hash-alg") == 0) {
2171 if (!arg) {
2172 r_usage++;
2173 continue;
2174 }
2175 hash_alg = e2p_string2hash(arg);
2176 if (hash_alg < 0) {
2177 fprintf(stderr,
2178 _("Invalid hash algorithm: %s\n"),
2179 arg);
2180 r_usage++;
2181 continue;
2182 }
2183 fs->super->s_def_hash_version = hash_alg;
2184 printf(_("Setting default hash algorithm "
2185 "to %s (%d)\n"),
2186 arg, hash_alg);
2187 ext2fs_mark_super_dirty(fs);
2188 } else if (!strcmp(token, "mount_opts")) {
2189 if (!arg) {
2190 r_usage++;
2191 continue;
2192 }
2193 if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
2194 fprintf(stderr,
2195 "Extended mount options too long\n");
2196 continue;
2197 }
2198 ext_mount_opts = strdup(arg);
2199 } else
2200 r_usage++;
2201 }
2202 if (r_usage) {
2203 fprintf(stderr, "%s", _("\nBad options specified.\n\n"
2204 "Extended options are separated by commas, "
2205 "and may take an argument which\n"
2206 "\tis set off by an equals ('=') sign.\n\n"
2207 "Valid extended options are:\n"
2208 "\tclear_mmp\n"
2209 "\thash_alg=<hash algorithm>\n"
2210 "\tmount_opts=<extended default mount options>\n"
2211 "\tmmp_update_interval=<mmp update interval in seconds>\n"
2212 "\tstride=<RAID per-disk chunk size in blocks>\n"
2213 "\tstripe_width=<RAID stride*data disks in blocks>\n"
2214 "\tforce_fsck\n"
2215 "\ttest_fs\n"
2216 "\t^test_fs\n"));
2217 free(buf);
2218 return 1;
2219 }
2220 free(buf);
2221
2222 return 0;
2223 }
2224
2225 /*
2226 * Fill in the block bitmap bmap with the information regarding the
2227 * blocks to be moved
2228 */
get_move_bitmaps(ext2_filsys fs,int new_ino_blks_per_grp,ext2fs_block_bitmap bmap)2229 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
2230 ext2fs_block_bitmap bmap)
2231 {
2232 dgrp_t i;
2233 int retval;
2234 ext2_badblocks_list bb_list = 0;
2235 blk64_t j, needed_blocks = 0;
2236 blk64_t start_blk, end_blk;
2237
2238 retval = ext2fs_read_bb_inode(fs, &bb_list);
2239 if (retval)
2240 return retval;
2241
2242 for (i = 0; i < fs->group_desc_count; i++) {
2243 start_blk = ext2fs_inode_table_loc(fs, i) +
2244 fs->inode_blocks_per_group;
2245
2246 end_blk = ext2fs_inode_table_loc(fs, i) +
2247 new_ino_blks_per_grp;
2248
2249 for (j = start_blk; j < end_blk; j++) {
2250 if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
2251 /*
2252 * IF the block is a bad block we fail
2253 */
2254 if (ext2fs_badblocks_list_test(bb_list, j)) {
2255 ext2fs_badblocks_list_free(bb_list);
2256 return ENOSPC;
2257 }
2258
2259 ext2fs_mark_block_bitmap2(bmap, j);
2260 } else {
2261 /*
2262 * We are going to use this block for
2263 * inode table. So mark them used.
2264 */
2265 ext2fs_mark_block_bitmap2(fs->block_map, j);
2266 }
2267 }
2268 needed_blocks += end_blk - start_blk;
2269 }
2270
2271 ext2fs_badblocks_list_free(bb_list);
2272 if (needed_blocks > ext2fs_free_blocks_count(fs->super))
2273 return ENOSPC;
2274
2275 return 0;
2276 }
2277
ext2fs_is_meta_block(ext2_filsys fs,blk64_t blk)2278 static int ext2fs_is_meta_block(ext2_filsys fs, blk64_t blk)
2279 {
2280 dgrp_t group;
2281 group = ext2fs_group_of_blk2(fs, blk);
2282 if (ext2fs_block_bitmap_loc(fs, group) == blk)
2283 return 1;
2284 if (ext2fs_inode_bitmap_loc(fs, group) == blk)
2285 return 1;
2286 return 0;
2287 }
2288
ext2fs_is_block_in_group(ext2_filsys fs,dgrp_t group,blk64_t blk)2289 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk64_t blk)
2290 {
2291 blk64_t start_blk, end_blk;
2292 start_blk = fs->super->s_first_data_block +
2293 EXT2_GROUPS_TO_BLOCKS(fs->super, group);
2294 /*
2295 * We cannot get new block beyond end_blk for for the last block group
2296 * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
2297 */
2298 end_blk = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
2299 if (blk >= start_blk && blk <= end_blk)
2300 return 1;
2301 return 0;
2302 }
2303
move_block(ext2_filsys fs,ext2fs_block_bitmap bmap)2304 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
2305 {
2306
2307 char *buf;
2308 dgrp_t group = 0;
2309 errcode_t retval;
2310 int meta_data = 0;
2311 blk64_t blk, new_blk, goal;
2312 struct blk_move *bmv;
2313
2314 retval = ext2fs_get_mem(fs->blocksize, &buf);
2315 if (retval)
2316 return retval;
2317
2318 for (new_blk = blk = fs->super->s_first_data_block;
2319 blk < ext2fs_blocks_count(fs->super); blk++) {
2320 if (!ext2fs_test_block_bitmap2(bmap, blk))
2321 continue;
2322
2323 if (ext2fs_is_meta_block(fs, blk)) {
2324 /*
2325 * If the block is mapping a fs meta data block
2326 * like group desc/block bitmap/inode bitmap. We
2327 * should find a block in the same group and fix
2328 * the respective fs metadata pointers. Otherwise
2329 * fail
2330 */
2331 group = ext2fs_group_of_blk2(fs, blk);
2332 goal = ext2fs_group_first_block2(fs, group);
2333 meta_data = 1;
2334
2335 } else {
2336 goal = new_blk;
2337 }
2338 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
2339 if (retval)
2340 goto err_out;
2341
2342 /* new fs meta data block should be in the same group */
2343 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
2344 retval = ENOSPC;
2345 goto err_out;
2346 }
2347
2348 /* Mark this block as allocated */
2349 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
2350
2351 /* Add it to block move list */
2352 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
2353 if (retval)
2354 goto err_out;
2355
2356 bmv->old_loc = blk;
2357 bmv->new_loc = new_blk;
2358
2359 list_add(&(bmv->list), &blk_move_list);
2360
2361 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
2362 if (retval)
2363 goto err_out;
2364
2365 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
2366 if (retval)
2367 goto err_out;
2368 }
2369
2370 err_out:
2371 ext2fs_free_mem(&buf);
2372 return retval;
2373 }
2374
translate_block(blk64_t blk)2375 static blk64_t translate_block(blk64_t blk)
2376 {
2377 struct list_head *entry;
2378 struct blk_move *bmv;
2379
2380 list_for_each(entry, &blk_move_list) {
2381 bmv = list_entry(entry, struct blk_move, list);
2382 if (bmv->old_loc == blk)
2383 return bmv->new_loc;
2384 }
2385
2386 return 0;
2387 }
2388
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)2389 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
2390 blk64_t *block_nr,
2391 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
2392 blk64_t ref_block EXT2FS_ATTR((unused)),
2393 int ref_offset EXT2FS_ATTR((unused)),
2394 void *priv_data)
2395 {
2396 int ret = 0;
2397 blk64_t new_blk;
2398 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
2399
2400 if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
2401 return 0;
2402 new_blk = translate_block(*block_nr);
2403 if (new_blk) {
2404 *block_nr = new_blk;
2405 /*
2406 * This will force the ext2fs_write_inode in the iterator
2407 */
2408 ret |= BLOCK_CHANGED;
2409 }
2410
2411 return ret;
2412 }
2413
inode_scan_and_fix(ext2_filsys fs,ext2fs_block_bitmap bmap)2414 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2415 {
2416 errcode_t retval = 0;
2417 ext2_ino_t ino;
2418 blk64_t blk;
2419 char *block_buf = 0;
2420 struct ext2_inode inode;
2421 ext2_inode_scan scan = NULL;
2422
2423 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
2424 if (retval)
2425 return retval;
2426
2427 retval = ext2fs_open_inode_scan(fs, 0, &scan);
2428 if (retval)
2429 goto err_out;
2430
2431 while (1) {
2432 retval = ext2fs_get_next_inode(scan, &ino, &inode);
2433 if (retval)
2434 goto err_out;
2435
2436 if (!ino)
2437 break;
2438
2439 if (inode.i_links_count == 0)
2440 continue; /* inode not in use */
2441
2442 /* FIXME!!
2443 * If we end up modifying the journal inode
2444 * the sb->s_jnl_blocks will differ. But a
2445 * subsequent e2fsck fixes that.
2446 * Do we need to fix this ??
2447 */
2448
2449 if (ext2fs_file_acl_block(fs, &inode) &&
2450 ext2fs_test_block_bitmap2(bmap,
2451 ext2fs_file_acl_block(fs, &inode))) {
2452 blk = translate_block(ext2fs_file_acl_block(fs,
2453 &inode));
2454 if (!blk)
2455 continue;
2456
2457 ext2fs_file_acl_block_set(fs, &inode, blk);
2458
2459 /*
2460 * Write the inode to disk so that inode table
2461 * resizing can work
2462 */
2463 retval = ext2fs_write_inode(fs, ino, &inode);
2464 if (retval)
2465 goto err_out;
2466 }
2467
2468 if (!ext2fs_inode_has_valid_blocks2(fs, &inode))
2469 continue;
2470
2471 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
2472 process_block, bmap);
2473 if (retval)
2474 goto err_out;
2475
2476 }
2477
2478 err_out:
2479 ext2fs_free_mem(&block_buf);
2480 ext2fs_close_inode_scan(scan);
2481
2482 return retval;
2483 }
2484
2485 /*
2486 * We need to scan for inode and block bitmaps that may need to be
2487 * moved. This can take place if the filesystem was formatted for
2488 * RAID arrays using the mke2fs's extended option "stride".
2489 */
group_desc_scan_and_fix(ext2_filsys fs,ext2fs_block_bitmap bmap)2490 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
2491 {
2492 dgrp_t i;
2493 blk64_t blk, new_blk;
2494
2495 for (i = 0; i < fs->group_desc_count; i++) {
2496 blk = ext2fs_block_bitmap_loc(fs, i);
2497 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2498 new_blk = translate_block(blk);
2499 if (!new_blk)
2500 continue;
2501 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2502 }
2503
2504 blk = ext2fs_inode_bitmap_loc(fs, i);
2505 if (ext2fs_test_block_bitmap2(bmap, blk)) {
2506 new_blk = translate_block(blk);
2507 if (!new_blk)
2508 continue;
2509 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2510 }
2511 }
2512 return 0;
2513 }
2514
expand_inode_table(ext2_filsys fs,unsigned long new_ino_size)2515 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
2516 {
2517 dgrp_t i;
2518 blk64_t blk;
2519 errcode_t retval;
2520 int new_ino_blks_per_grp;
2521 unsigned int j;
2522 char *old_itable = NULL, *new_itable = NULL;
2523 char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
2524 unsigned long old_ino_size;
2525 int old_itable_size, new_itable_size;
2526
2527 old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
2528 old_ino_size = EXT2_INODE_SIZE(fs->super);
2529
2530 new_ino_blks_per_grp = ext2fs_div_ceil(
2531 EXT2_INODES_PER_GROUP(fs->super) *
2532 new_ino_size,
2533 fs->blocksize);
2534
2535 new_itable_size = new_ino_blks_per_grp * fs->blocksize;
2536
2537 retval = ext2fs_get_mem(old_itable_size, &old_itable);
2538 if (retval)
2539 return retval;
2540
2541 retval = ext2fs_get_mem(new_itable_size, &new_itable);
2542 if (retval)
2543 goto err_out;
2544
2545 tmp_old_itable = old_itable;
2546 tmp_new_itable = new_itable;
2547
2548 for (i = 0; i < fs->group_desc_count; i++) {
2549 blk = ext2fs_inode_table_loc(fs, i);
2550 retval = io_channel_read_blk64(fs->io, blk,
2551 fs->inode_blocks_per_group, old_itable);
2552 if (retval)
2553 goto err_out;
2554
2555 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
2556 memcpy(new_itable, old_itable, old_ino_size);
2557
2558 memset(new_itable+old_ino_size, 0,
2559 new_ino_size - old_ino_size);
2560
2561 new_itable += new_ino_size;
2562 old_itable += old_ino_size;
2563 }
2564
2565 /* reset the pointer */
2566 old_itable = tmp_old_itable;
2567 new_itable = tmp_new_itable;
2568
2569 retval = io_channel_write_blk64(fs->io, blk,
2570 new_ino_blks_per_grp, new_itable);
2571 if (retval)
2572 goto err_out;
2573 }
2574
2575 /* Update the meta data */
2576 fs->inode_blocks_per_group = new_ino_blks_per_grp;
2577 ext2fs_free_inode_cache(fs->icache);
2578 fs->icache = 0;
2579 fs->super->s_inode_size = new_ino_size;
2580
2581 err_out:
2582 if (old_itable)
2583 ext2fs_free_mem(&old_itable);
2584
2585 if (new_itable)
2586 ext2fs_free_mem(&new_itable);
2587
2588 return retval;
2589 }
2590
ext2fs_calculate_summary_stats(ext2_filsys fs)2591 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
2592 {
2593 blk64_t blk;
2594 ext2_ino_t ino;
2595 unsigned int group = 0;
2596 unsigned int count = 0;
2597 int total_free = 0;
2598 int group_free = 0;
2599
2600 /*
2601 * First calculate the block statistics
2602 */
2603 for (blk = fs->super->s_first_data_block;
2604 blk < ext2fs_blocks_count(fs->super); blk++) {
2605 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
2606 group_free++;
2607 total_free++;
2608 }
2609 count++;
2610 if ((count == fs->super->s_blocks_per_group) ||
2611 (blk == ext2fs_blocks_count(fs->super)-1)) {
2612 ext2fs_bg_free_blocks_count_set(fs, group++,
2613 group_free);
2614 count = 0;
2615 group_free = 0;
2616 }
2617 }
2618 total_free = EXT2FS_C2B(fs, total_free);
2619 ext2fs_free_blocks_count_set(fs->super, total_free);
2620
2621 /*
2622 * Next, calculate the inode statistics
2623 */
2624 group_free = 0;
2625 total_free = 0;
2626 count = 0;
2627 group = 0;
2628
2629 /* Protect loop from wrap-around if s_inodes_count maxed */
2630 for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
2631 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
2632 group_free++;
2633 total_free++;
2634 }
2635 count++;
2636 if ((count == fs->super->s_inodes_per_group) ||
2637 (ino == fs->super->s_inodes_count)) {
2638 ext2fs_bg_free_inodes_count_set(fs, group++,
2639 group_free);
2640 count = 0;
2641 group_free = 0;
2642 }
2643 }
2644 fs->super->s_free_inodes_count = total_free;
2645 ext2fs_mark_super_dirty(fs);
2646 return 0;
2647 }
2648
2649 #define list_for_each_safe(pos, pnext, head) \
2650 for (pos = (head)->next, pnext = pos->next; pos != (head); \
2651 pos = pnext, pnext = pos->next)
2652
free_blk_move_list(void)2653 static void free_blk_move_list(void)
2654 {
2655 struct list_head *entry, *tmp;
2656 struct blk_move *bmv;
2657
2658 list_for_each_safe(entry, tmp, &blk_move_list) {
2659 bmv = list_entry(entry, struct blk_move, list);
2660 list_del(entry);
2661 ext2fs_free_mem(&bmv);
2662 }
2663 return;
2664 }
2665
resize_inode(ext2_filsys fs,unsigned long new_size)2666 static int resize_inode(ext2_filsys fs, unsigned long new_size)
2667 {
2668 errcode_t retval;
2669 int new_ino_blks_per_grp;
2670 ext2fs_block_bitmap bmap;
2671
2672 retval = ext2fs_read_inode_bitmap(fs);
2673 if (retval) {
2674 fputs(_("Failed to read inode bitmap\n"), stderr);
2675 return retval;
2676 }
2677 retval = ext2fs_read_block_bitmap(fs);
2678 if (retval) {
2679 fputs(_("Failed to read block bitmap\n"), stderr);
2680 return retval;
2681 }
2682 INIT_LIST_HEAD(&blk_move_list);
2683
2684
2685 new_ino_blks_per_grp = ext2fs_div_ceil(
2686 EXT2_INODES_PER_GROUP(fs->super)*
2687 new_size,
2688 fs->blocksize);
2689
2690 /* We may change the file system.
2691 * Mark the file system as invalid so that
2692 * the user is prompted to run fsck.
2693 */
2694 fs->super->s_state &= ~EXT2_VALID_FS;
2695
2696 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
2697 &bmap);
2698 if (retval) {
2699 fputs(_("Failed to allocate block bitmap when "
2700 "increasing inode size\n"), stderr);
2701 return retval;
2702 }
2703 retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
2704 if (retval) {
2705 fputs(_("Not enough space to increase inode size \n"), stderr);
2706 goto err_out;
2707 }
2708 retval = move_block(fs, bmap);
2709 if (retval) {
2710 fputs(_("Failed to relocate blocks during inode resize \n"),
2711 stderr);
2712 goto err_out;
2713 }
2714 retval = inode_scan_and_fix(fs, bmap);
2715 if (retval)
2716 goto err_out_undo;
2717
2718 retval = group_desc_scan_and_fix(fs, bmap);
2719 if (retval)
2720 goto err_out_undo;
2721
2722 retval = expand_inode_table(fs, new_size);
2723 if (retval)
2724 goto err_out_undo;
2725
2726 ext2fs_calculate_summary_stats(fs);
2727
2728 fs->super->s_state |= EXT2_VALID_FS;
2729 /* mark super block and block bitmap as dirty */
2730 ext2fs_mark_super_dirty(fs);
2731 ext2fs_mark_bb_dirty(fs);
2732
2733 err_out:
2734 free_blk_move_list();
2735 ext2fs_free_block_bitmap(bmap);
2736
2737 return retval;
2738
2739 err_out_undo:
2740 free_blk_move_list();
2741 ext2fs_free_block_bitmap(bmap);
2742 fputs(_("Error in resizing the inode size.\n"
2743 "Run e2undo to undo the "
2744 "file system changes. \n"), stderr);
2745
2746 return retval;
2747 }
2748
tune2fs_setup_tdb(const char * name,io_manager * io_ptr)2749 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
2750 {
2751 errcode_t retval = 0;
2752 const char *tdb_dir;
2753 char *tdb_file = NULL;
2754 char *dev_name, *tmp_name;
2755
2756 /* (re)open a specific undo file */
2757 if (undo_file && undo_file[0] != 0) {
2758 retval = set_undo_io_backing_manager(*io_ptr);
2759 if (retval)
2760 goto err;
2761 *io_ptr = undo_io_manager;
2762 retval = set_undo_io_backup_file(undo_file);
2763 if (retval)
2764 goto err;
2765 printf(_("Overwriting existing filesystem; this can be undone "
2766 "using the command:\n"
2767 " e2undo %s %s\n\n"),
2768 undo_file, name);
2769 return retval;
2770 }
2771
2772 /*
2773 * Configuration via a conf file would be
2774 * nice
2775 */
2776 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
2777 if (!tdb_dir)
2778 tdb_dir = "/var/lib/e2fsprogs";
2779
2780 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
2781 access(tdb_dir, W_OK))
2782 return 0;
2783
2784 tmp_name = strdup(name);
2785 if (!tmp_name)
2786 goto errout;
2787 dev_name = basename(tmp_name);
2788 tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
2789 if (!tdb_file) {
2790 free(tmp_name);
2791 goto errout;
2792 }
2793 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
2794 free(tmp_name);
2795
2796 if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
2797 retval = errno;
2798 com_err(program_name, retval,
2799 _("while trying to delete %s"), tdb_file);
2800 goto errout;
2801 }
2802
2803 retval = set_undo_io_backing_manager(*io_ptr);
2804 if (retval)
2805 goto errout;
2806 *io_ptr = undo_io_manager;
2807 retval = set_undo_io_backup_file(tdb_file);
2808 if (retval)
2809 goto errout;
2810 printf(_("Overwriting existing filesystem; this can be undone "
2811 "using the command:\n"
2812 " e2undo %s %s\n\n"),
2813 tdb_file, name);
2814
2815 free(tdb_file);
2816 return 0;
2817 errout:
2818 free(tdb_file);
2819 err:
2820 com_err("tune2fs", retval, "while trying to setup undo file\n");
2821 return retval;
2822 }
2823
2824 static int
fs_update_journal_user(struct ext2_super_block * sb,__u8 old_uuid[UUID_SIZE])2825 fs_update_journal_user(struct ext2_super_block *sb, __u8 old_uuid[UUID_SIZE])
2826 {
2827 int retval, nr_users, start;
2828 journal_superblock_t *jsb;
2829 ext2_filsys jfs;
2830 __u8 *j_uuid;
2831 char *journal_path;
2832 char uuid[UUID_STR_SIZE];
2833 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
2834
2835 if (!ext2fs_has_feature_journal(sb) || uuid_is_null(sb->s_journal_uuid))
2836 return 0;
2837
2838 uuid_unparse(sb->s_journal_uuid, uuid);
2839 journal_path = blkid_get_devname(NULL, "UUID", uuid);
2840 if (!journal_path)
2841 return 0;
2842
2843 retval = ext2fs_open2(journal_path, io_options,
2844 EXT2_FLAG_JOURNAL_DEV_OK | EXT2_FLAG_RW,
2845 0, 0, unix_io_manager, &jfs);
2846 if (retval) {
2847 com_err(program_name, retval,
2848 _("while trying to open %s"),
2849 journal_path);
2850 return retval;
2851 }
2852
2853 retval = get_journal_sb(jfs, buf);
2854 if (retval != 0) {
2855 if (retval == EXT2_ET_UNSUPP_FEATURE)
2856 fprintf(stderr, _("%s is not a journal device.\n"),
2857 journal_path);
2858 return retval;
2859 }
2860
2861 jsb = (journal_superblock_t *) buf;
2862 /* Find the filesystem UUID */
2863 nr_users = ntohl(jsb->s_nr_users);
2864 if (nr_users > JFS_USERS_MAX) {
2865 fprintf(stderr, _("Journal superblock is corrupted, nr_users\n"
2866 "is too high (%d).\n"), nr_users);
2867 return EXT2_ET_CORRUPT_JOURNAL_SB;
2868 }
2869
2870 j_uuid = journal_user(old_uuid, jsb->s_users, nr_users);
2871 if (j_uuid == NULL) {
2872 fputs(_("Filesystem's UUID not found on journal device.\n"),
2873 stderr);
2874 return EXT2_ET_LOAD_EXT_JOURNAL;
2875 }
2876
2877 memcpy(j_uuid, sb->s_uuid, UUID_SIZE);
2878
2879 start = ext2fs_journal_sb_start(jfs->blocksize);
2880 /* Write back the journal superblock */
2881 retval = io_channel_write_blk64(jfs->io, start, -SUPERBLOCK_SIZE, buf);
2882 if (retval != 0) {
2883 com_err(program_name, retval,
2884 "while writing journal superblock.");
2885 return retval;
2886 }
2887
2888 ext2fs_close(jfs);
2889
2890 return 0;
2891 }
2892
2893 #ifndef BUILD_AS_LIB
main(int argc,char ** argv)2894 int main(int argc, char **argv)
2895 #else
2896 int tune2fs_main(int argc, char **argv)
2897 #endif /* BUILD_AS_LIB */
2898 {
2899 errcode_t retval;
2900 ext2_filsys fs;
2901 struct ext2_super_block *sb;
2902 io_manager io_ptr, io_ptr_orig = NULL;
2903 int rc = 0;
2904 char default_undo_file[1] = { 0 };
2905
2906 #ifdef ENABLE_NLS
2907 setlocale(LC_MESSAGES, "");
2908 setlocale(LC_CTYPE, "");
2909 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
2910 textdomain(NLS_CAT_NAME);
2911 set_com_err_gettext(gettext);
2912 #endif
2913 if (argc && *argv)
2914 program_name = *argv;
2915 add_error_table(&et_ext2_error_table);
2916
2917 #ifdef CONFIG_BUILD_FINDFS
2918 if (strcmp(get_progname(argv[0]), "findfs") == 0)
2919 do_findfs(argc, argv);
2920 #endif
2921 if (strcmp(get_progname(argv[0]), "e2label") == 0)
2922 parse_e2label_options(argc, argv);
2923 else
2924 parse_tune2fs_options(argc, argv);
2925
2926 #ifdef CONFIG_TESTIO_DEBUG
2927 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
2928 io_ptr = test_io_manager;
2929 test_io_backing_manager = unix_io_manager;
2930 } else
2931 #endif
2932 io_ptr = unix_io_manager;
2933
2934 retry_open:
2935 if ((open_flag & EXT2_FLAG_RW) == 0 || f_flag)
2936 open_flag |= EXT2_FLAG_SKIP_MMP;
2937
2938 open_flag |= EXT2_FLAG_64BITS | EXT2_FLAG_JOURNAL_DEV_OK;
2939
2940 /* keep the filesystem struct around to dump MMP data */
2941 open_flag |= EXT2_FLAG_NOFREE_ON_ERROR;
2942
2943 retval = ext2fs_open2(device_name, io_options, open_flag,
2944 0, 0, io_ptr, &fs);
2945 if (retval) {
2946 com_err(program_name, retval,
2947 _("while trying to open %s"),
2948 device_name);
2949 if (retval == EXT2_ET_MMP_FSCK_ON ||
2950 retval == EXT2_ET_MMP_UNKNOWN_SEQ)
2951 dump_mmp_msg(fs->mmp_buf,
2952 _("If you are sure the filesystem "
2953 "is not in use on any node, run:\n"
2954 "'tune2fs -f -E clear_mmp {device}'\n"));
2955 else if (retval == EXT2_ET_MMP_FAILED)
2956 dump_mmp_msg(fs->mmp_buf, NULL);
2957 else if (retval == EXT2_ET_MMP_MAGIC_INVALID)
2958 fprintf(stderr,
2959 _("MMP block magic is bad. Try to fix it by "
2960 "running:\n'e2fsck -f %s'\n"), device_name);
2961 else if (retval == EXT2_ET_BAD_MAGIC)
2962 check_plausibility(device_name, CHECK_FS_EXIST, NULL);
2963 else if (retval != EXT2_ET_MMP_FAILED)
2964 fprintf(stderr, "%s",
2965 _("Couldn't find valid filesystem superblock.\n"));
2966
2967 ext2fs_free(fs);
2968 exit(1);
2969 }
2970 if (ext2fs_has_feature_journal_dev(fs->super)) {
2971 fprintf(stderr, "%s", _("Cannot modify a journal device.\n"));
2972 ext2fs_free(fs);
2973 exit(1);
2974 }
2975 fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
2976
2977 if (I_flag) {
2978 /*
2979 * Check the inode size is right so we can issue an
2980 * error message and bail before setting up the tdb
2981 * file.
2982 */
2983 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
2984 fprintf(stderr, _("The inode size is already %lu\n"),
2985 new_inode_size);
2986 rc = 1;
2987 goto closefs;
2988 }
2989 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
2990 fprintf(stderr, "%s",
2991 _("Shrinking inode size is not supported\n"));
2992 rc = 1;
2993 goto closefs;
2994 }
2995 if (new_inode_size > fs->blocksize) {
2996 fprintf(stderr, _("Invalid inode size %lu (max %d)\n"),
2997 new_inode_size, fs->blocksize);
2998 rc = 1;
2999 goto closefs;
3000 }
3001 check_fsck_needed(fs,
3002 _("Resizing inodes could take some time."));
3003 /*
3004 * If inode resize is requested use the
3005 * Undo I/O manager
3006 */
3007 undo_file = default_undo_file;
3008 }
3009
3010 /* Set up an undo file */
3011 if (undo_file && io_ptr_orig == NULL) {
3012 io_ptr_orig = io_ptr;
3013 retval = tune2fs_setup_tdb(device_name, &io_ptr);
3014 if (retval) {
3015 rc = 1;
3016 goto closefs;
3017 }
3018 if (io_ptr != io_ptr_orig) {
3019 ext2fs_close_free(&fs);
3020 goto retry_open;
3021 }
3022 }
3023
3024 sb = fs->super;
3025 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
3026
3027 if (print_label) {
3028 /* For e2label emulation */
3029 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
3030 sb->s_volume_name);
3031 remove_error_table(&et_ext2_error_table);
3032 goto closefs;
3033 }
3034
3035 retval = ext2fs_check_if_mounted(device_name, &mount_flags);
3036 if (retval) {
3037 com_err("ext2fs_check_if_mount", retval,
3038 _("while determining whether %s is mounted."),
3039 device_name);
3040 rc = 1;
3041 goto closefs;
3042 }
3043
3044 #ifdef NO_RECOVERY
3045 /* Warn if file system needs recovery and it is opened for writing. */
3046 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & EXT2_MF_MOUNTED) &&
3047 (sb->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
3048 (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER)) {
3049 fprintf(stderr,
3050 _("Warning: The journal is dirty. You may wish to replay the journal like:\n\n"
3051 "\te2fsck -E journal_only %s\n\n"
3052 "then rerun this command. Otherwise, any changes made may be overwritten\n"
3053 "by journal recovery.\n"), device_name);
3054 }
3055 #else
3056 /* Recover the journal if possible. */
3057 if ((open_flag & EXT2_FLAG_RW) && !(mount_flags & (EXT2_MF_BUSY | EXT2_MF_MOUNTED)) &&
3058 ext2fs_has_feature_journal_needs_recovery(fs->super)) {
3059 errcode_t err;
3060
3061 printf(_("Recovering journal.\n"));
3062 err = ext2fs_run_ext3_journal(&fs);
3063 if (err) {
3064 com_err("tune2fs", err, "while recovering journal.\n");
3065 printf(_("Please run e2fsck -fy %s.\n"), argv[1]);
3066 if (fs)
3067 ext2fs_close_free(&fs);
3068 exit(1);
3069 }
3070 sb = fs->super;
3071 }
3072 #endif
3073
3074 /* Normally we only need to write out the superblock */
3075 fs->flags |= EXT2_FLAG_SUPER_ONLY;
3076
3077 if (c_flag) {
3078 sb->s_max_mnt_count = max_mount_count;
3079 ext2fs_mark_super_dirty(fs);
3080 printf(_("Setting maximal mount count to %d\n"),
3081 max_mount_count);
3082 }
3083 if (C_flag) {
3084 sb->s_mnt_count = mount_count;
3085 ext2fs_mark_super_dirty(fs);
3086 printf(_("Setting current mount count to %d\n"), mount_count);
3087 }
3088 if (e_flag) {
3089 sb->s_errors = errors;
3090 ext2fs_mark_super_dirty(fs);
3091 printf(_("Setting error behavior to %d\n"), errors);
3092 }
3093 if (g_flag) {
3094 sb->s_def_resgid = resgid;
3095 ext2fs_mark_super_dirty(fs);
3096 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
3097 }
3098 if (i_flag) {
3099 if ((unsigned long long)interval >= (1ULL << 32)) {
3100 com_err(program_name, 0,
3101 _("interval between checks is too big (%lu)"),
3102 interval);
3103 rc = 1;
3104 goto closefs;
3105 }
3106 sb->s_checkinterval = interval;
3107 ext2fs_mark_super_dirty(fs);
3108 printf(_("Setting interval between checks to %lu seconds\n"),
3109 interval);
3110 }
3111 if (m_flag) {
3112 ext2fs_r_blocks_count_set(sb, reserved_ratio *
3113 ext2fs_blocks_count(sb) / 100.0);
3114 ext2fs_mark_super_dirty(fs);
3115 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
3116 reserved_ratio, ext2fs_r_blocks_count(sb));
3117 }
3118 if (r_flag) {
3119 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
3120 com_err(program_name, 0,
3121 _("reserved blocks count is too big (%llu)"),
3122 reserved_blocks);
3123 rc = 1;
3124 goto closefs;
3125 }
3126 ext2fs_r_blocks_count_set(sb, reserved_blocks);
3127 ext2fs_mark_super_dirty(fs);
3128 printf(_("Setting reserved blocks count to %llu\n"),
3129 reserved_blocks);
3130 }
3131 if (s_flag == 1) {
3132 if (ext2fs_has_feature_sparse_super(sb)) {
3133 fputs(_("\nThe filesystem already has sparse "
3134 "superblocks.\n"), stderr);
3135 } else if (ext2fs_has_feature_meta_bg(sb)) {
3136 fputs(_("\nSetting the sparse superblock flag not "
3137 "supported\nfor filesystems with "
3138 "the meta_bg feature enabled.\n"),
3139 stderr);
3140 rc = 1;
3141 goto closefs;
3142 } else {
3143 ext2fs_set_feature_sparse_super(sb);
3144 sb->s_state &= ~EXT2_VALID_FS;
3145 ext2fs_mark_super_dirty(fs);
3146 printf(_("\nSparse superblock flag set. %s"),
3147 _(please_fsck));
3148 }
3149 }
3150 if (s_flag == 0) {
3151 fputs(_("\nClearing the sparse superblock flag not supported.\n"),
3152 stderr);
3153 rc = 1;
3154 goto closefs;
3155 }
3156 if (T_flag) {
3157 sb->s_lastcheck = last_check_time;
3158 ext2fs_mark_super_dirty(fs);
3159 printf(_("Setting time filesystem last checked to %s\n"),
3160 ctime(&last_check_time));
3161 }
3162 if (u_flag) {
3163 sb->s_def_resuid = resuid;
3164 ext2fs_mark_super_dirty(fs);
3165 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
3166 }
3167 if (L_flag) {
3168 if (strlen(new_label) > sizeof(sb->s_volume_name))
3169 fputs(_("Warning: label too long, truncating.\n"),
3170 stderr);
3171 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
3172 strncpy(sb->s_volume_name, new_label,
3173 sizeof(sb->s_volume_name));
3174 ext2fs_mark_super_dirty(fs);
3175 }
3176 if (M_flag) {
3177 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
3178 strncpy(sb->s_last_mounted, new_last_mounted,
3179 sizeof(sb->s_last_mounted));
3180 ext2fs_mark_super_dirty(fs);
3181 }
3182 if (mntopts_cmd) {
3183 rc = update_mntopts(fs, mntopts_cmd);
3184 if (rc)
3185 goto closefs;
3186 }
3187 if (features_cmd) {
3188 rc = update_feature_set(fs, features_cmd);
3189 if (rc)
3190 goto closefs;
3191 }
3192 if (extended_cmd) {
3193 rc = parse_extended_opts(fs, extended_cmd);
3194 if (rc)
3195 goto closefs;
3196 if (clear_mmp && !f_flag) {
3197 fputs(_("Error in using clear_mmp. "
3198 "It must be used with -f\n"),
3199 stderr);
3200 goto closefs;
3201 }
3202 }
3203 if (clear_mmp) {
3204 rc = ext2fs_mmp_clear(fs);
3205 goto closefs;
3206 }
3207 if (journal_size || journal_device) {
3208 rc = add_journal(fs);
3209 if (rc)
3210 goto closefs;
3211 }
3212
3213 if (Q_flag) {
3214 if (mount_flags & EXT2_MF_MOUNTED) {
3215 fputs(_("The quota feature may only be changed when "
3216 "the filesystem is unmounted.\n"), stderr);
3217 rc = 1;
3218 goto closefs;
3219 }
3220 handle_quota_options(fs);
3221 }
3222
3223 if (U_flag) {
3224 int set_csum = 0;
3225 dgrp_t i;
3226 char buf[SUPERBLOCK_SIZE] __attribute__ ((aligned(8)));
3227 __u8 old_uuid[UUID_SIZE];
3228
3229 if (ext2fs_has_group_desc_csum(fs)) {
3230 /*
3231 * Changing the UUID on a metadata_csum FS requires
3232 * rewriting all metadata, which can race with a
3233 * mounted fs. Don't allow that unless we're saving
3234 * the checksum seed.
3235 */
3236 if ((mount_flags & EXT2_MF_MOUNTED) &&
3237 !ext2fs_has_feature_csum_seed(fs->super) &&
3238 ext2fs_has_feature_metadata_csum(fs->super)) {
3239 fputs(_("The UUID may only be "
3240 "changed when the filesystem is "
3241 "unmounted.\n"), stderr);
3242 fputs(_("If you only use kernels newer than "
3243 "v4.4, run 'tune2fs -O "
3244 "metadata_csum_seed' and re-run this "
3245 "command.\n"), stderr);
3246 try_confirm_csum_seed_support();
3247 exit(1);
3248 }
3249 if (!ext2fs_has_feature_csum_seed(fs->super))
3250 check_fsck_needed(fs,
3251 _("Setting UUID on a checksummed "
3252 "filesystem could take some time."));
3253
3254 /*
3255 * Determine if the block group checksums are
3256 * correct so we know whether or not to set
3257 * them later on.
3258 */
3259 for (i = 0; i < fs->group_desc_count; i++)
3260 if (!ext2fs_group_desc_csum_verify(fs, i))
3261 break;
3262 if (i >= fs->group_desc_count)
3263 set_csum = 1;
3264 }
3265
3266 memcpy(old_uuid, sb->s_uuid, UUID_SIZE);
3267 if ((strcasecmp(new_UUID, "null") == 0) ||
3268 (strcasecmp(new_UUID, "clear") == 0)) {
3269 uuid_clear(sb->s_uuid);
3270 } else if (strcasecmp(new_UUID, "time") == 0) {
3271 uuid_generate_time(sb->s_uuid);
3272 } else if (strcasecmp(new_UUID, "random") == 0) {
3273 uuid_generate(sb->s_uuid);
3274 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
3275 com_err(program_name, 0, "%s",
3276 _("Invalid UUID format\n"));
3277 rc = 1;
3278 goto closefs;
3279 }
3280 ext2fs_init_csum_seed(fs);
3281 if (set_csum) {
3282 for (i = 0; i < fs->group_desc_count; i++)
3283 ext2fs_group_desc_csum_set(fs, i);
3284 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3285 }
3286
3287 /* If this is a journal dev, we need to copy UUID into jsb */
3288 if (!(rc = get_journal_sb(fs, buf))) {
3289 journal_superblock_t *jsb;
3290
3291 jsb = (journal_superblock_t *) buf;
3292 fputs(_("Need to update journal superblock.\n"), stdout);
3293 memcpy(jsb->s_uuid, sb->s_uuid, sizeof(sb->s_uuid));
3294
3295 /* Writeback the journal superblock */
3296 if ((rc = io_channel_write_blk64(fs->io,
3297 ext2fs_journal_sb_start(fs->blocksize),
3298 -SUPERBLOCK_SIZE, buf)))
3299 goto closefs;
3300 } else if (rc != EXT2_ET_UNSUPP_FEATURE)
3301 goto closefs;
3302 else {
3303 rc = 0; /** Reset rc to avoid ext2fs_mmp_stop() */
3304
3305 if ((rc = fs_update_journal_user(sb, old_uuid)))
3306 goto closefs;
3307 }
3308
3309 ext2fs_mark_super_dirty(fs);
3310 if (!ext2fs_has_feature_csum_seed(fs->super) &&
3311 (ext2fs_has_feature_metadata_csum(fs->super) ||
3312 ext2fs_has_feature_ea_inode(fs->super)))
3313 rewrite_checksums = 1;
3314 }
3315
3316 if (I_flag) {
3317 if (mount_flags & EXT2_MF_MOUNTED) {
3318 fputs(_("The inode size may only be "
3319 "changed when the filesystem is "
3320 "unmounted.\n"), stderr);
3321 rc = 1;
3322 goto closefs;
3323 }
3324 if (ext2fs_has_feature_flex_bg(fs->super)) {
3325 fputs(_("Changing the inode size not supported for "
3326 "filesystems with the flex_bg\n"
3327 "feature enabled.\n"),
3328 stderr);
3329 rc = 1;
3330 goto closefs;
3331 }
3332 /*
3333 * We want to update group descriptor also
3334 * with the new free inode count
3335 */
3336 if (rewrite_checksums)
3337 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3338 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
3339 retval = resize_inode(fs, new_inode_size);
3340 if (rewrite_checksums)
3341 fs->flags &= ~EXT2_FLAG_IGNORE_CSUM_ERRORS;
3342 if (retval == 0) {
3343 printf(_("Setting inode size %lu\n"),
3344 new_inode_size);
3345 rewrite_checksums = 1;
3346 } else {
3347 printf("%s", _("Failed to change inode size\n"));
3348 rc = 1;
3349 goto closefs;
3350 }
3351 }
3352
3353 if (rewrite_checksums)
3354 rewrite_metadata_checksums(fs);
3355
3356 if (l_flag)
3357 list_super(sb);
3358 if (stride_set) {
3359 sb->s_raid_stride = stride;
3360 ext2fs_mark_super_dirty(fs);
3361 printf(_("Setting stride size to %d\n"), stride);
3362 }
3363 if (stripe_width_set) {
3364 sb->s_raid_stripe_width = stripe_width;
3365 ext2fs_mark_super_dirty(fs);
3366 printf(_("Setting stripe width to %d\n"), stripe_width);
3367 }
3368 if (ext_mount_opts) {
3369 strncpy((char *)(fs->super->s_mount_opts), ext_mount_opts,
3370 sizeof(fs->super->s_mount_opts));
3371 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
3372 ext2fs_mark_super_dirty(fs);
3373 printf(_("Setting extended default mount options to '%s'\n"),
3374 ext_mount_opts);
3375 free(ext_mount_opts);
3376 }
3377
3378 free(device_name);
3379 remove_error_table(&et_ext2_error_table);
3380
3381 closefs:
3382 if (rc) {
3383 ext2fs_mmp_stop(fs);
3384 #ifndef BUILD_AS_LIB
3385 exit(1);
3386 #endif
3387 }
3388
3389 if (feature_64bit)
3390 convert_64bit(fs, feature_64bit);
3391 return (ext2fs_close_free(&fs) ? 1 : 0);
3392 }
3393