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Fix superblock field s_blocks_count for bigalloc file systems
[thirdparty/e2fsprogs.git] / misc / tune2fs.c
1 /*
2 * tune2fs.c - Change the file system parameters on an ext2 file system
3 *
4 * Copyright (C) 1992, 1993, 1994 Remy Card <card@masi.ibp.fr>
5 * Laboratoire MASI, Institut Blaise Pascal
6 * Universite Pierre et Marie Curie (Paris VI)
7 *
8 * Copyright 1995, 1996, 1997, 1998, 1999, 2000 by Theodore Ts'o.
9 *
10 * %Begin-Header%
11 * This file may be redistributed under the terms of the GNU Public
12 * License.
13 * %End-Header%
14 */
15
16 /*
17 * History:
18 * 93/06/01 - Creation
19 * 93/10/31 - Added the -c option to change the maximal mount counts
20 * 93/12/14 - Added -l flag to list contents of superblock
21 * M.J.E. Mol (marcel@duteca.et.tudelft.nl)
22 * F.W. ten Wolde (franky@duteca.et.tudelft.nl)
23 * 93/12/29 - Added the -e option to change errors behavior
24 * 94/02/27 - Ported to use the ext2fs library
25 * 94/03/06 - Added the checks interval from Uwe Ohse (uwe@tirka.gun.de)
26 */
27
28 #define _XOPEN_SOURCE 600 /* for inclusion of strptime() */
29 #define _BSD_SOURCE /* for inclusion of strcasecmp() */
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 #include <string.h>
44 #include <time.h>
45 #include <unistd.h>
46 #include <sys/types.h>
47 #include <libgen.h>
48 #include <limits.h>
49
50 #include "ext2fs/ext2_fs.h"
51 #include "ext2fs/ext2fs.h"
52 #include "et/com_err.h"
53 #include "uuid/uuid.h"
54 #include "e2p/e2p.h"
55 #include "jfs_user.h"
56 #include "util.h"
57 #include "blkid/blkid.h"
58
59 #include "../version.h"
60 #include "nls-enable.h"
61
62 const char *program_name = "tune2fs";
63 char *device_name;
64 char *new_label, *new_last_mounted, *new_UUID;
65 char *io_options;
66 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
67 static int m_flag, M_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
68 static int I_flag;
69 static time_t last_check_time;
70 static int print_label;
71 static int max_mount_count, mount_count, mount_flags;
72 static unsigned long interval;
73 static blk64_t reserved_blocks;
74 static double reserved_ratio;
75 static unsigned long resgid, resuid;
76 static unsigned short errors;
77 static int open_flag;
78 static char *features_cmd;
79 static char *mntopts_cmd;
80 static int stride, stripe_width;
81 static int stride_set, stripe_width_set;
82 static char *extended_cmd;
83 static unsigned long new_inode_size;
84
85 int journal_size, journal_flags;
86 char *journal_device;
87
88 static struct list_head blk_move_list;
89
90 struct blk_move {
91 struct list_head list;
92 blk64_t old_loc;
93 blk64_t new_loc;
94 };
95
96
97 static const char *please_fsck = N_("Please run e2fsck on the filesystem.\n");
98
99 #ifdef CONFIG_BUILD_FINDFS
100 void do_findfs(int argc, char **argv);
101 #endif
102
103 static void usage(void)
104 {
105 fprintf(stderr,
106 _("Usage: %s [-c max_mounts_count] [-e errors_behavior] "
107 "[-g group]\n"
108 "\t[-i interval[d|m|w]] [-j] [-J journal_options] [-l]\n"
109 "\t[-m reserved_blocks_percent] "
110 "[-o [^]mount_options[,...]] \n"
111 "\t[-r reserved_blocks_count] [-u user] [-C mount_count] "
112 "[-L volume_label]\n"
113 "\t[-M last_mounted_dir] [-O [^]feature[,...]]\n"
114 "\t[-E extended-option[,...]] [-T last_check_time] "
115 "[-U UUID]\n\t[ -I new_inode_size ] device\n"), program_name);
116 exit(1);
117 }
118
119 static __u32 ok_features[3] = {
120 /* Compat */
121 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
122 EXT2_FEATURE_COMPAT_DIR_INDEX,
123 /* Incompat */
124 EXT2_FEATURE_INCOMPAT_FILETYPE |
125 EXT3_FEATURE_INCOMPAT_EXTENTS |
126 EXT4_FEATURE_INCOMPAT_FLEX_BG,
127 /* R/O compat */
128 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
129 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
130 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
131 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
132 EXT4_FEATURE_RO_COMPAT_GDT_CSUM |
133 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER
134 };
135
136 static __u32 clear_ok_features[3] = {
137 /* Compat */
138 EXT3_FEATURE_COMPAT_HAS_JOURNAL |
139 EXT2_FEATURE_COMPAT_RESIZE_INODE |
140 EXT2_FEATURE_COMPAT_DIR_INDEX,
141 /* Incompat */
142 EXT2_FEATURE_INCOMPAT_FILETYPE |
143 EXT4_FEATURE_INCOMPAT_FLEX_BG,
144 /* R/O compat */
145 EXT2_FEATURE_RO_COMPAT_LARGE_FILE |
146 EXT4_FEATURE_RO_COMPAT_HUGE_FILE|
147 EXT4_FEATURE_RO_COMPAT_DIR_NLINK|
148 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE|
149 EXT4_FEATURE_RO_COMPAT_GDT_CSUM
150 };
151
152 /*
153 * Remove an external journal from the filesystem
154 */
155 static void remove_journal_device(ext2_filsys fs)
156 {
157 char *journal_path;
158 ext2_filsys jfs;
159 char buf[1024];
160 journal_superblock_t *jsb;
161 int i, nr_users;
162 errcode_t retval;
163 int commit_remove_journal = 0;
164 io_manager io_ptr;
165
166 if (f_flag)
167 commit_remove_journal = 1; /* force removal even if error */
168
169 uuid_unparse(fs->super->s_journal_uuid, buf);
170 journal_path = blkid_get_devname(NULL, "UUID", buf);
171
172 if (!journal_path) {
173 journal_path =
174 ext2fs_find_block_device(fs->super->s_journal_dev);
175 if (!journal_path)
176 return;
177 }
178
179 #ifdef CONFIG_TESTIO_DEBUG
180 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
181 io_ptr = test_io_manager;
182 test_io_backing_manager = unix_io_manager;
183 } else
184 #endif
185 io_ptr = unix_io_manager;
186 retval = ext2fs_open(journal_path, EXT2_FLAG_RW|
187 EXT2_FLAG_JOURNAL_DEV_OK, 0,
188 fs->blocksize, io_ptr, &jfs);
189 if (retval) {
190 com_err(program_name, retval,
191 _("while trying to open external journal"));
192 goto no_valid_journal;
193 }
194 if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
195 fprintf(stderr, _("%s is not a journal device.\n"),
196 journal_path);
197 goto no_valid_journal;
198 }
199
200 /* Get the journal superblock */
201 if ((retval = io_channel_read_blk64(jfs->io, 1, -1024, buf))) {
202 com_err(program_name, retval,
203 _("while reading journal superblock"));
204 goto no_valid_journal;
205 }
206
207 jsb = (journal_superblock_t *) buf;
208 if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
209 (jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
210 fputs(_("Journal superblock not found!\n"), stderr);
211 goto no_valid_journal;
212 }
213
214 /* Find the filesystem UUID */
215 nr_users = ntohl(jsb->s_nr_users);
216 for (i = 0; i < nr_users; i++) {
217 if (memcmp(fs->super->s_uuid,
218 &jsb->s_users[i*16], 16) == 0)
219 break;
220 }
221 if (i >= nr_users) {
222 fputs(_("Filesystem's UUID not found on journal device.\n"),
223 stderr);
224 commit_remove_journal = 1;
225 goto no_valid_journal;
226 }
227 nr_users--;
228 for (i = 0; i < nr_users; i++)
229 memcpy(&jsb->s_users[i*16], &jsb->s_users[(i+1)*16], 16);
230 jsb->s_nr_users = htonl(nr_users);
231
232 /* Write back the journal superblock */
233 if ((retval = io_channel_write_blk64(jfs->io, 1, -1024, buf))) {
234 com_err(program_name, retval,
235 "while writing journal superblock.");
236 goto no_valid_journal;
237 }
238
239 commit_remove_journal = 1;
240
241 no_valid_journal:
242 if (commit_remove_journal == 0) {
243 fputs(_("Journal NOT removed\n"), stderr);
244 exit(1);
245 }
246 fs->super->s_journal_dev = 0;
247 uuid_clear(fs->super->s_journal_uuid);
248 ext2fs_mark_super_dirty(fs);
249 fputs(_("Journal removed\n"), stdout);
250 free(journal_path);
251 }
252
253 /* Helper function for remove_journal_inode */
254 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
255 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
256 blk64_t ref_block EXT2FS_ATTR((unused)),
257 int ref_offset EXT2FS_ATTR((unused)),
258 void *private EXT2FS_ATTR((unused)))
259 {
260 blk64_t block;
261 int group;
262
263 block = *blocknr;
264 ext2fs_unmark_block_bitmap2(fs->block_map, block);
265 group = ext2fs_group_of_blk2(fs, block);
266 ext2fs_bg_free_blocks_count_set(fs, group, ext2fs_bg_free_blocks_count(fs, group) + 1);
267 ext2fs_group_desc_csum_set(fs, group);
268 ext2fs_free_blocks_count_add(fs->super, EXT2FS_CLUSTER_RATIO(fs));
269 return 0;
270 }
271
272 /*
273 * Remove the journal inode from the filesystem
274 */
275 static void remove_journal_inode(ext2_filsys fs)
276 {
277 struct ext2_inode inode;
278 errcode_t retval;
279 ino_t ino = fs->super->s_journal_inum;
280
281 retval = ext2fs_read_inode(fs, ino, &inode);
282 if (retval) {
283 com_err(program_name, retval,
284 _("while reading journal inode"));
285 exit(1);
286 }
287 if (ino == EXT2_JOURNAL_INO) {
288 retval = ext2fs_read_bitmaps(fs);
289 if (retval) {
290 com_err(program_name, retval,
291 _("while reading bitmaps"));
292 exit(1);
293 }
294 retval = ext2fs_block_iterate3(fs, ino,
295 BLOCK_FLAG_READ_ONLY, NULL,
296 release_blocks_proc, NULL);
297 if (retval) {
298 com_err(program_name, retval,
299 _("while clearing journal inode"));
300 exit(1);
301 }
302 memset(&inode, 0, sizeof(inode));
303 ext2fs_mark_bb_dirty(fs);
304 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
305 } else
306 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
307 retval = ext2fs_write_inode(fs, ino, &inode);
308 if (retval) {
309 com_err(program_name, retval,
310 _("while writing journal inode"));
311 exit(1);
312 }
313 fs->super->s_journal_inum = 0;
314 ext2fs_mark_super_dirty(fs);
315 }
316
317 /*
318 * Update the default mount options
319 */
320 static void update_mntopts(ext2_filsys fs, char *mntopts)
321 {
322 struct ext2_super_block *sb = fs->super;
323
324 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
325 fprintf(stderr, _("Invalid mount option set: %s\n"),
326 mntopts);
327 exit(1);
328 }
329 ext2fs_mark_super_dirty(fs);
330 }
331
332 static void request_fsck_afterwards(ext2_filsys fs)
333 {
334 static int requested = 0;
335
336 if (requested++)
337 return;
338 fs->super->s_state &= ~EXT2_VALID_FS;
339 printf("\n%s\n", _(please_fsck));
340 if (mount_flags & EXT2_MF_READONLY)
341 printf(_("(and reboot afterwards!)\n"));
342 }
343
344 /*
345 * Update the feature set as provided by the user.
346 */
347 static void update_feature_set(ext2_filsys fs, char *features)
348 {
349 struct ext2_super_block *sb = fs->super;
350 struct ext2_group_desc *gd;
351 __u32 old_features[3];
352 int i, type_err;
353 unsigned int mask_err;
354
355 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
356 ((&sb->s_feature_compat)[(type)] & (mask)))
357 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
358 !((&sb->s_feature_compat)[(type)] & (mask)))
359 #define FEATURE_CHANGED(type, mask) ((mask) & \
360 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
361
362 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
363 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
364 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
365
366 if (e2p_edit_feature2(features, &sb->s_feature_compat,
367 ok_features, clear_ok_features,
368 &type_err, &mask_err)) {
369 if (!mask_err)
370 fprintf(stderr,
371 _("Invalid filesystem option set: %s\n"),
372 features);
373 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
374 fprintf(stderr, _("Clearing filesystem feature '%s' "
375 "not supported.\n"),
376 e2p_feature2string(type_err &
377 E2P_FEATURE_TYPE_MASK,
378 mask_err));
379 else
380 fprintf(stderr, _("Setting filesystem feature '%s' "
381 "not supported.\n"),
382 e2p_feature2string(type_err, mask_err));
383 exit(1);
384 }
385
386 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
387 if ((mount_flags & EXT2_MF_MOUNTED) &&
388 !(mount_flags & EXT2_MF_READONLY)) {
389 fputs(_("The has_journal feature may only be "
390 "cleared when the filesystem is\n"
391 "unmounted or mounted "
392 "read-only.\n"), stderr);
393 exit(1);
394 }
395 if (sb->s_feature_incompat &
396 EXT3_FEATURE_INCOMPAT_RECOVER) {
397 fputs(_("The needs_recovery flag is set. "
398 "Please run e2fsck before clearing\n"
399 "the has_journal flag.\n"), stderr);
400 exit(1);
401 }
402 if (sb->s_journal_inum) {
403 remove_journal_inode(fs);
404 }
405 if (sb->s_journal_dev) {
406 remove_journal_device(fs);
407 }
408 }
409
410 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
411 /*
412 * If adding a journal flag, let the create journal
413 * code below handle setting the flag and creating the
414 * journal. We supply a default size if necessary.
415 */
416 if (!journal_size)
417 journal_size = -1;
418 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
419 }
420
421 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
422 if (!sb->s_def_hash_version)
423 sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
424 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
425 uuid_generate((unsigned char *) sb->s_hash_seed);
426 }
427
428 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
429 if (ext2fs_check_desc(fs)) {
430 fputs(_("Clearing the flex_bg flag would "
431 "cause the the filesystem to be\n"
432 "inconsistent.\n"), stderr);
433 exit(1);
434 }
435 }
436
437 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
438 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
439 if ((mount_flags & EXT2_MF_MOUNTED) &&
440 !(mount_flags & EXT2_MF_READONLY)) {
441 fputs(_("The huge_file feature may only be "
442 "cleared when the filesystem is\n"
443 "unmounted or mounted "
444 "read-only.\n"), stderr);
445 exit(1);
446 }
447 }
448
449 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
450 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
451 for (i = 0; i < fs->group_desc_count; i++) {
452 gd = ext2fs_group_desc(fs, fs->group_desc, i);
453 gd->bg_itable_unused = 0;
454 gd->bg_flags = EXT2_BG_INODE_ZEROED;
455 ext2fs_group_desc_csum_set(fs, i);
456 }
457 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
458 }
459
460 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
461 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
462 for (i = 0; i < fs->group_desc_count; i++) {
463 gd = ext2fs_group_desc(fs, fs->group_desc, i);
464 if ((gd->bg_flags & EXT2_BG_INODE_ZEROED) == 0) {
465 /*
466 * XXX what we really should do is zap
467 * uninitialized inode tables instead.
468 */
469 request_fsck_afterwards(fs);
470 break;
471 }
472 gd->bg_itable_unused = 0;
473 gd->bg_flags = 0;
474 gd->bg_checksum = 0;
475 }
476 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
477 }
478
479 if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
480 (sb->s_feature_compat || sb->s_feature_ro_compat ||
481 sb->s_feature_incompat))
482 ext2fs_update_dynamic_rev(fs);
483
484 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
485 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
486 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
487 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
488 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
489 EXT2_FEATURE_INCOMPAT_FILETYPE) ||
490 FEATURE_CHANGED(E2P_FEATURE_COMPAT,
491 EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
492 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
493 EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
494 request_fsck_afterwards(fs);
495
496 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
497 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
498 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
499 ext2fs_mark_super_dirty(fs);
500 }
501
502 /*
503 * Add a journal to the filesystem.
504 */
505 static void add_journal(ext2_filsys fs)
506 {
507 unsigned long journal_blocks;
508 errcode_t retval;
509 ext2_filsys jfs;
510 io_manager io_ptr;
511
512 if (fs->super->s_feature_compat &
513 EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
514 fputs(_("The filesystem already has a journal.\n"), stderr);
515 goto err;
516 }
517 if (journal_device) {
518 check_plausibility(journal_device);
519 check_mount(journal_device, 0, _("journal"));
520 #ifdef CONFIG_TESTIO_DEBUG
521 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
522 io_ptr = test_io_manager;
523 test_io_backing_manager = unix_io_manager;
524 } else
525 #endif
526 io_ptr = unix_io_manager;
527 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
528 EXT2_FLAG_JOURNAL_DEV_OK, 0,
529 fs->blocksize, io_ptr, &jfs);
530 if (retval) {
531 com_err(program_name, retval,
532 _("\n\twhile trying to open journal on %s\n"),
533 journal_device);
534 goto err;
535 }
536 printf(_("Creating journal on device %s: "),
537 journal_device);
538 fflush(stdout);
539
540 retval = ext2fs_add_journal_device(fs, jfs);
541 ext2fs_close(jfs);
542 if (retval) {
543 com_err(program_name, retval,
544 _("while adding filesystem to journal on %s"),
545 journal_device);
546 goto err;
547 }
548 fputs(_("done\n"), stdout);
549 } else if (journal_size) {
550 fputs(_("Creating journal inode: "), stdout);
551 fflush(stdout);
552 journal_blocks = figure_journal_size(journal_size, fs);
553
554 retval = ext2fs_add_journal_inode(fs, journal_blocks,
555 journal_flags);
556 if (retval) {
557 fprintf(stderr, "\n");
558 com_err(program_name, retval,
559 _("\n\twhile trying to create journal file"));
560 exit(1);
561 } else
562 fputs(_("done\n"), stdout);
563 /*
564 * If the filesystem wasn't mounted, we need to force
565 * the block group descriptors out.
566 */
567 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
568 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
569 }
570 print_check_message(fs);
571 return;
572
573 err:
574 free(journal_device);
575 exit(1);
576 }
577
578
579 static void parse_e2label_options(int argc, char ** argv)
580 {
581 if ((argc < 2) || (argc > 3)) {
582 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
583 exit(1);
584 }
585 io_options = strchr(argv[1], '?');
586 if (io_options)
587 *io_options++ = 0;
588 device_name = blkid_get_devname(NULL, argv[1], NULL);
589 if (!device_name) {
590 com_err("e2label", 0, _("Unable to resolve '%s'"),
591 argv[1]);
592 exit(1);
593 }
594 open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
595 if (argc == 3) {
596 open_flag |= EXT2_FLAG_RW;
597 L_flag = 1;
598 new_label = argv[2];
599 } else
600 print_label++;
601 }
602
603 static time_t parse_time(char *str)
604 {
605 struct tm ts;
606
607 if (strcmp(str, "now") == 0) {
608 return (time(0));
609 }
610 memset(&ts, 0, sizeof(ts));
611 #ifdef HAVE_STRPTIME
612 strptime(str, "%Y%m%d%H%M%S", &ts);
613 #else
614 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
615 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
616 ts.tm_year -= 1900;
617 ts.tm_mon -= 1;
618 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
619 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
620 ts.tm_min > 59 || ts.tm_sec > 61)
621 ts.tm_mday = 0;
622 #endif
623 if (ts.tm_mday == 0) {
624 com_err(program_name, 0,
625 _("Couldn't parse date/time specifier: %s"),
626 str);
627 usage();
628 }
629 ts.tm_isdst = -1;
630 return (mktime(&ts));
631 }
632
633 static void parse_tune2fs_options(int argc, char **argv)
634 {
635 int c;
636 char *tmp;
637 struct group *gr;
638 struct passwd *pw;
639
640 open_flag = 0;
641
642 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
643 while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:")) != EOF)
644 switch (c) {
645 case 'c':
646 max_mount_count = strtol(optarg, &tmp, 0);
647 if (*tmp || max_mount_count > 16000) {
648 com_err(program_name, 0,
649 _("bad mounts count - %s"),
650 optarg);
651 usage();
652 }
653 if (max_mount_count == 0)
654 max_mount_count = -1;
655 c_flag = 1;
656 open_flag = EXT2_FLAG_RW;
657 break;
658 case 'C':
659 mount_count = strtoul(optarg, &tmp, 0);
660 if (*tmp || mount_count > 16000) {
661 com_err(program_name, 0,
662 _("bad mounts count - %s"),
663 optarg);
664 usage();
665 }
666 C_flag = 1;
667 open_flag = EXT2_FLAG_RW;
668 break;
669 case 'e':
670 if (strcmp(optarg, "continue") == 0)
671 errors = EXT2_ERRORS_CONTINUE;
672 else if (strcmp(optarg, "remount-ro") == 0)
673 errors = EXT2_ERRORS_RO;
674 else if (strcmp(optarg, "panic") == 0)
675 errors = EXT2_ERRORS_PANIC;
676 else {
677 com_err(program_name, 0,
678 _("bad error behavior - %s"),
679 optarg);
680 usage();
681 }
682 e_flag = 1;
683 open_flag = EXT2_FLAG_RW;
684 break;
685 case 'E':
686 extended_cmd = optarg;
687 open_flag |= EXT2_FLAG_RW;
688 break;
689 case 'f': /* Force */
690 f_flag = 1;
691 break;
692 case 'g':
693 resgid = strtoul(optarg, &tmp, 0);
694 if (*tmp) {
695 gr = getgrnam(optarg);
696 if (gr == NULL)
697 tmp = optarg;
698 else {
699 resgid = gr->gr_gid;
700 *tmp = 0;
701 }
702 }
703 if (*tmp) {
704 com_err(program_name, 0,
705 _("bad gid/group name - %s"),
706 optarg);
707 usage();
708 }
709 g_flag = 1;
710 open_flag = EXT2_FLAG_RW;
711 break;
712 case 'i':
713 interval = strtoul(optarg, &tmp, 0);
714 switch (*tmp) {
715 case 's':
716 tmp++;
717 break;
718 case '\0':
719 case 'd':
720 case 'D': /* days */
721 interval *= 86400;
722 if (*tmp != '\0')
723 tmp++;
724 break;
725 case 'm':
726 case 'M': /* months! */
727 interval *= 86400 * 30;
728 tmp++;
729 break;
730 case 'w':
731 case 'W': /* weeks */
732 interval *= 86400 * 7;
733 tmp++;
734 break;
735 }
736 if (*tmp) {
737 com_err(program_name, 0,
738 _("bad interval - %s"), optarg);
739 usage();
740 }
741 i_flag = 1;
742 open_flag = EXT2_FLAG_RW;
743 break;
744 case 'j':
745 if (!journal_size)
746 journal_size = -1;
747 open_flag = EXT2_FLAG_RW;
748 break;
749 case 'J':
750 parse_journal_opts(optarg);
751 open_flag = EXT2_FLAG_RW;
752 break;
753 case 'l':
754 l_flag = 1;
755 break;
756 case 'L':
757 new_label = optarg;
758 L_flag = 1;
759 open_flag |= EXT2_FLAG_RW |
760 EXT2_FLAG_JOURNAL_DEV_OK;
761 break;
762 case 'm':
763 reserved_ratio = strtod(optarg, &tmp);
764 if (*tmp || reserved_ratio > 50 ||
765 reserved_ratio < 0) {
766 com_err(program_name, 0,
767 _("bad reserved block ratio - %s"),
768 optarg);
769 usage();
770 }
771 m_flag = 1;
772 open_flag = EXT2_FLAG_RW;
773 break;
774 case 'M':
775 new_last_mounted = optarg;
776 M_flag = 1;
777 open_flag = EXT2_FLAG_RW;
778 break;
779 case 'o':
780 if (mntopts_cmd) {
781 com_err(program_name, 0,
782 _("-o may only be specified once"));
783 usage();
784 }
785 mntopts_cmd = optarg;
786 open_flag = EXT2_FLAG_RW;
787 break;
788
789 case 'O':
790 if (features_cmd) {
791 com_err(program_name, 0,
792 _("-O may only be specified once"));
793 usage();
794 }
795 features_cmd = optarg;
796 open_flag = EXT2_FLAG_RW;
797 break;
798 case 'r':
799 reserved_blocks = strtoul(optarg, &tmp, 0);
800 if (*tmp) {
801 com_err(program_name, 0,
802 _("bad reserved blocks count - %s"),
803 optarg);
804 usage();
805 }
806 r_flag = 1;
807 open_flag = EXT2_FLAG_RW;
808 break;
809 case 's': /* Deprecated */
810 s_flag = atoi(optarg);
811 open_flag = EXT2_FLAG_RW;
812 break;
813 case 'T':
814 T_flag = 1;
815 last_check_time = parse_time(optarg);
816 open_flag = EXT2_FLAG_RW;
817 break;
818 case 'u':
819 resuid = strtoul(optarg, &tmp, 0);
820 if (*tmp) {
821 pw = getpwnam(optarg);
822 if (pw == NULL)
823 tmp = optarg;
824 else {
825 resuid = pw->pw_uid;
826 *tmp = 0;
827 }
828 }
829 if (*tmp) {
830 com_err(program_name, 0,
831 _("bad uid/user name - %s"),
832 optarg);
833 usage();
834 }
835 u_flag = 1;
836 open_flag = EXT2_FLAG_RW;
837 break;
838 case 'U':
839 new_UUID = optarg;
840 U_flag = 1;
841 open_flag = EXT2_FLAG_RW |
842 EXT2_FLAG_JOURNAL_DEV_OK;
843 break;
844 case 'I':
845 new_inode_size = strtoul(optarg, &tmp, 0);
846 if (*tmp) {
847 com_err(program_name, 0,
848 _("bad inode size - %s"),
849 optarg);
850 usage();
851 }
852 if (!((new_inode_size &
853 (new_inode_size - 1)) == 0)) {
854 com_err(program_name, 0,
855 _("Inode size must be a "
856 "power of two- %s"),
857 optarg);
858 usage();
859 }
860 open_flag = EXT2_FLAG_RW;
861 I_flag = 1;
862 break;
863 default:
864 usage();
865 }
866 if (optind < argc - 1 || optind == argc)
867 usage();
868 if (!open_flag && !l_flag)
869 usage();
870 io_options = strchr(argv[optind], '?');
871 if (io_options)
872 *io_options++ = 0;
873 device_name = blkid_get_devname(NULL, argv[optind], NULL);
874 if (!device_name) {
875 com_err("tune2fs", 0, _("Unable to resolve '%s'"),
876 argv[optind]);
877 exit(1);
878 }
879 }
880
881 #ifdef CONFIG_BUILD_FINDFS
882 void do_findfs(int argc, char **argv)
883 {
884 char *dev;
885
886 if ((argc != 2) ||
887 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
888 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
889 exit(2);
890 }
891 dev = blkid_get_devname(NULL, argv[1], NULL);
892 if (!dev) {
893 com_err("findfs", 0, _("Unable to resolve '%s'"),
894 argv[1]);
895 exit(1);
896 }
897 puts(dev);
898 exit(0);
899 }
900 #endif
901
902 static void parse_extended_opts(ext2_filsys fs, const char *opts)
903 {
904 char *buf, *token, *next, *p, *arg;
905 int len, hash_alg;
906 int r_usage = 0;
907
908 len = strlen(opts);
909 buf = malloc(len+1);
910 if (!buf) {
911 fprintf(stderr,
912 _("Couldn't allocate memory to parse options!\n"));
913 exit(1);
914 }
915 strcpy(buf, opts);
916 for (token = buf; token && *token; token = next) {
917 p = strchr(token, ',');
918 next = 0;
919 if (p) {
920 *p = 0;
921 next = p+1;
922 }
923 arg = strchr(token, '=');
924 if (arg) {
925 *arg = 0;
926 arg++;
927 }
928 if (!strcmp(token, "test_fs")) {
929 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
930 printf("Setting test filesystem flag\n");
931 ext2fs_mark_super_dirty(fs);
932 } else if (!strcmp(token, "^test_fs")) {
933 fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
934 printf("Clearing test filesystem flag\n");
935 ext2fs_mark_super_dirty(fs);
936 } else if (strcmp(token, "stride") == 0) {
937 if (!arg) {
938 r_usage++;
939 continue;
940 }
941 stride = strtoul(arg, &p, 0);
942 if (*p || (stride == 0)) {
943 fprintf(stderr,
944 _("Invalid RAID stride: %s\n"),
945 arg);
946 r_usage++;
947 continue;
948 }
949 stride_set = 1;
950 } else if (strcmp(token, "stripe-width") == 0 ||
951 strcmp(token, "stripe_width") == 0) {
952 if (!arg) {
953 r_usage++;
954 continue;
955 }
956 stripe_width = strtoul(arg, &p, 0);
957 if (*p || (stripe_width == 0)) {
958 fprintf(stderr,
959 _("Invalid RAID stripe-width: %s\n"),
960 arg);
961 r_usage++;
962 continue;
963 }
964 stripe_width_set = 1;
965 } else if (strcmp(token, "hash_alg") == 0 ||
966 strcmp(token, "hash-alg") == 0) {
967 if (!arg) {
968 r_usage++;
969 continue;
970 }
971 hash_alg = e2p_string2hash(arg);
972 if (hash_alg < 0) {
973 fprintf(stderr,
974 _("Invalid hash algorithm: %s\n"),
975 arg);
976 r_usage++;
977 continue;
978 }
979 fs->super->s_def_hash_version = hash_alg;
980 printf(_("Setting default hash algorithm "
981 "to %s (%d)\n"),
982 arg, hash_alg);
983 ext2fs_mark_super_dirty(fs);
984 } else if (strcmp(token, "mount-options")) {
985 if (!arg) {
986 r_usage++;
987 continue;
988 }
989 if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
990 fprintf(stderr,
991 "Extended mount options too long\n");
992 continue;
993 }
994 strcpy((char *)fs->super->s_mount_opts, arg);
995 ext2fs_mark_super_dirty(fs);
996 } else
997 r_usage++;
998 }
999 if (r_usage) {
1000 fprintf(stderr, _("\nBad options specified.\n\n"
1001 "Extended options are separated by commas, "
1002 "and may take an argument which\n"
1003 "\tis set off by an equals ('=') sign.\n\n"
1004 "Valid extended options are:\n"
1005 "\tstride=<RAID per-disk chunk size in blocks>\n"
1006 "\tstripe_width=<RAID stride*data disks in blocks>\n"
1007 "\thash_alg=<hash algorithm>\n"
1008 "\ttest_fs\n"
1009 "\t^test_fs\n"));
1010 free(buf);
1011 exit(1);
1012 }
1013 free(buf);
1014 }
1015
1016 /*
1017 * Fill in the block bitmap bmap with the information regarding the
1018 * blocks to be moved
1019 */
1020 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
1021 ext2fs_block_bitmap bmap)
1022 {
1023 dgrp_t i;
1024 int retval;
1025 ext2_badblocks_list bb_list = 0;
1026 blk64_t j, needed_blocks = 0;
1027 blk64_t start_blk, end_blk;
1028
1029 retval = ext2fs_read_bb_inode(fs, &bb_list);
1030 if (retval)
1031 return retval;
1032
1033 for (i = 0; i < fs->group_desc_count; i++) {
1034 start_blk = ext2fs_inode_table_loc(fs, i) +
1035 fs->inode_blocks_per_group;
1036
1037 end_blk = ext2fs_inode_table_loc(fs, i) +
1038 new_ino_blks_per_grp;
1039
1040 for (j = start_blk; j < end_blk; j++) {
1041 if (ext2fs_test_block_bitmap2(fs->block_map, j)) {
1042 /*
1043 * IF the block is a bad block we fail
1044 */
1045 if (ext2fs_badblocks_list_test(bb_list, j)) {
1046 ext2fs_badblocks_list_free(bb_list);
1047 return ENOSPC;
1048 }
1049
1050 ext2fs_mark_block_bitmap2(bmap, j);
1051 } else {
1052 /*
1053 * We are going to use this block for
1054 * inode table. So mark them used.
1055 */
1056 ext2fs_mark_block_bitmap2(fs->block_map, j);
1057 }
1058 }
1059 needed_blocks += end_blk - start_blk;
1060 }
1061
1062 ext2fs_badblocks_list_free(bb_list);
1063 if (needed_blocks > ext2fs_free_blocks_count(fs->super))
1064 return ENOSPC;
1065
1066 return 0;
1067 }
1068
1069 static int ext2fs_is_meta_block(ext2_filsys fs, blk_t blk)
1070 {
1071 dgrp_t group;
1072 group = ext2fs_group_of_blk(fs, blk);
1073 if (ext2fs_block_bitmap_loc(fs, group) == blk)
1074 return 1;
1075 if (ext2fs_inode_bitmap_loc(fs, group) == blk)
1076 return 1;
1077 return 0;
1078 }
1079
1080 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk_t blk)
1081 {
1082 blk_t start_blk, end_blk;
1083 start_blk = fs->super->s_first_data_block +
1084 EXT2_BLOCKS_PER_GROUP(fs->super) * group;
1085 /*
1086 * We cannot get new block beyond end_blk for for the last block group
1087 * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
1088 */
1089 end_blk = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
1090 if (blk >= start_blk && blk <= end_blk)
1091 return 1;
1092 return 0;
1093 }
1094
1095 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
1096 {
1097
1098 char *buf;
1099 dgrp_t group = 0;
1100 errcode_t retval;
1101 int meta_data = 0;
1102 blk64_t blk, new_blk, goal;
1103 struct blk_move *bmv;
1104
1105 retval = ext2fs_get_mem(fs->blocksize, &buf);
1106 if (retval)
1107 return retval;
1108
1109 for (new_blk = blk = fs->super->s_first_data_block;
1110 blk < ext2fs_blocks_count(fs->super); blk++) {
1111 if (!ext2fs_test_block_bitmap2(bmap, blk))
1112 continue;
1113
1114 if (ext2fs_is_meta_block(fs, blk)) {
1115 /*
1116 * If the block is mapping a fs meta data block
1117 * like group desc/block bitmap/inode bitmap. We
1118 * should find a block in the same group and fix
1119 * the respective fs metadata pointers. Otherwise
1120 * fail
1121 */
1122 group = ext2fs_group_of_blk(fs, blk);
1123 goal = ext2fs_group_first_block2(fs, group);
1124 meta_data = 1;
1125
1126 } else {
1127 goal = new_blk;
1128 }
1129 retval = ext2fs_new_block2(fs, goal, NULL, &new_blk);
1130 if (retval)
1131 goto err_out;
1132
1133 /* new fs meta data block should be in the same group */
1134 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
1135 retval = ENOSPC;
1136 goto err_out;
1137 }
1138
1139 /* Mark this block as allocated */
1140 ext2fs_mark_block_bitmap2(fs->block_map, new_blk);
1141
1142 /* Add it to block move list */
1143 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
1144 if (retval)
1145 goto err_out;
1146
1147 bmv->old_loc = blk;
1148 bmv->new_loc = new_blk;
1149
1150 list_add(&(bmv->list), &blk_move_list);
1151
1152 retval = io_channel_read_blk64(fs->io, blk, 1, buf);
1153 if (retval)
1154 goto err_out;
1155
1156 retval = io_channel_write_blk64(fs->io, new_blk, 1, buf);
1157 if (retval)
1158 goto err_out;
1159 }
1160
1161 err_out:
1162 ext2fs_free_mem(&buf);
1163 return retval;
1164 }
1165
1166 static blk64_t translate_block(blk64_t blk)
1167 {
1168 struct list_head *entry;
1169 struct blk_move *bmv;
1170
1171 list_for_each(entry, &blk_move_list) {
1172 bmv = list_entry(entry, struct blk_move, list);
1173 if (bmv->old_loc == blk)
1174 return bmv->new_loc;
1175 }
1176
1177 return 0;
1178 }
1179
1180 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
1181 blk64_t *block_nr,
1182 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1183 blk64_t ref_block EXT2FS_ATTR((unused)),
1184 int ref_offset EXT2FS_ATTR((unused)),
1185 void *priv_data)
1186 {
1187 int ret = 0;
1188 blk64_t new_blk;
1189 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
1190
1191 if (!ext2fs_test_block_bitmap2(bmap, *block_nr))
1192 return 0;
1193 new_blk = translate_block(*block_nr);
1194 if (new_blk) {
1195 *block_nr = new_blk;
1196 /*
1197 * This will force the ext2fs_write_inode in the iterator
1198 */
1199 ret |= BLOCK_CHANGED;
1200 }
1201
1202 return ret;
1203 }
1204
1205 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1206 {
1207 errcode_t retval = 0;
1208 ext2_ino_t ino;
1209 blk64_t blk;
1210 char *block_buf = 0;
1211 struct ext2_inode inode;
1212 ext2_inode_scan scan = NULL;
1213
1214 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
1215 if (retval)
1216 return retval;
1217
1218 retval = ext2fs_open_inode_scan(fs, 0, &scan);
1219 if (retval)
1220 goto err_out;
1221
1222 while (1) {
1223 retval = ext2fs_get_next_inode(scan, &ino, &inode);
1224 if (retval)
1225 goto err_out;
1226
1227 if (!ino)
1228 break;
1229
1230 if (inode.i_links_count == 0)
1231 continue; /* inode not in use */
1232
1233 /* FIXME!!
1234 * If we end up modifying the journal inode
1235 * the sb->s_jnl_blocks will differ. But a
1236 * subsequent e2fsck fixes that.
1237 * Do we need to fix this ??
1238 */
1239
1240 if (ext2fs_file_acl_block(&inode) &&
1241 ext2fs_test_block_bitmap2(bmap,
1242 ext2fs_file_acl_block(&inode))) {
1243 blk = translate_block(ext2fs_file_acl_block(&inode));
1244 if (!blk)
1245 continue;
1246
1247 ext2fs_file_acl_block_set(&inode, blk);
1248
1249 /*
1250 * Write the inode to disk so that inode table
1251 * resizing can work
1252 */
1253 retval = ext2fs_write_inode(fs, ino, &inode);
1254 if (retval)
1255 goto err_out;
1256 }
1257
1258 if (!ext2fs_inode_has_valid_blocks(&inode))
1259 continue;
1260
1261 retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
1262 process_block, bmap);
1263 if (retval)
1264 goto err_out;
1265
1266 }
1267
1268 err_out:
1269 ext2fs_free_mem(&block_buf);
1270
1271 return retval;
1272 }
1273
1274 /*
1275 * We need to scan for inode and block bitmaps that may need to be
1276 * moved. This can take place if the filesystem was formatted for
1277 * RAID arrays using the mke2fs's extended option "stride".
1278 */
1279 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1280 {
1281 dgrp_t i;
1282 blk_t blk, new_blk;
1283
1284 for (i = 0; i < fs->group_desc_count; i++) {
1285 blk = ext2fs_block_bitmap_loc(fs, i);
1286 if (ext2fs_test_block_bitmap2(bmap, blk)) {
1287 new_blk = translate_block(blk);
1288 if (!new_blk)
1289 continue;
1290 ext2fs_block_bitmap_loc_set(fs, i, new_blk);
1291 }
1292
1293 blk = ext2fs_inode_bitmap_loc(fs, i);
1294 if (ext2fs_test_block_bitmap2(bmap, blk)) {
1295 new_blk = translate_block(blk);
1296 if (!new_blk)
1297 continue;
1298 ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
1299 }
1300 }
1301 return 0;
1302 }
1303
1304 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
1305 {
1306 dgrp_t i;
1307 blk64_t blk;
1308 errcode_t retval;
1309 int new_ino_blks_per_grp;
1310 unsigned int j;
1311 char *old_itable = NULL, *new_itable = NULL;
1312 char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
1313 unsigned long old_ino_size;
1314 int old_itable_size, new_itable_size;
1315
1316 old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
1317 old_ino_size = EXT2_INODE_SIZE(fs->super);
1318
1319 new_ino_blks_per_grp = ext2fs_div_ceil(
1320 EXT2_INODES_PER_GROUP(fs->super) *
1321 new_ino_size,
1322 fs->blocksize);
1323
1324 new_itable_size = new_ino_blks_per_grp * fs->blocksize;
1325
1326 retval = ext2fs_get_mem(old_itable_size, &old_itable);
1327 if (retval)
1328 return retval;
1329
1330 retval = ext2fs_get_mem(new_itable_size, &new_itable);
1331 if (retval)
1332 goto err_out;
1333
1334 tmp_old_itable = old_itable;
1335 tmp_new_itable = new_itable;
1336
1337 for (i = 0; i < fs->group_desc_count; i++) {
1338 blk = ext2fs_inode_table_loc(fs, i);
1339 retval = io_channel_read_blk64(fs->io, blk,
1340 fs->inode_blocks_per_group, old_itable);
1341 if (retval)
1342 goto err_out;
1343
1344 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
1345 memcpy(new_itable, old_itable, old_ino_size);
1346
1347 memset(new_itable+old_ino_size, 0,
1348 new_ino_size - old_ino_size);
1349
1350 new_itable += new_ino_size;
1351 old_itable += old_ino_size;
1352 }
1353
1354 /* reset the pointer */
1355 old_itable = tmp_old_itable;
1356 new_itable = tmp_new_itable;
1357
1358 retval = io_channel_write_blk64(fs->io, blk,
1359 new_ino_blks_per_grp, new_itable);
1360 if (retval)
1361 goto err_out;
1362 }
1363
1364 /* Update the meta data */
1365 fs->inode_blocks_per_group = new_ino_blks_per_grp;
1366 fs->super->s_inode_size = new_ino_size;
1367
1368 err_out:
1369 if (old_itable)
1370 ext2fs_free_mem(&old_itable);
1371
1372 if (new_itable)
1373 ext2fs_free_mem(&new_itable);
1374
1375 return retval;
1376 }
1377
1378 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
1379 {
1380 blk64_t blk;
1381 ext2_ino_t ino;
1382 unsigned int group = 0;
1383 unsigned int count = 0;
1384 int total_free = 0;
1385 int group_free = 0;
1386
1387 /*
1388 * First calculate the block statistics
1389 */
1390 for (blk = fs->super->s_first_data_block;
1391 blk < ext2fs_blocks_count(fs->super); blk++) {
1392 if (!ext2fs_fast_test_block_bitmap2(fs->block_map, blk)) {
1393 group_free++;
1394 total_free++;
1395 }
1396 count++;
1397 if ((count == fs->super->s_blocks_per_group) ||
1398 (blk == ext2fs_blocks_count(fs->super)-1)) {
1399 ext2fs_bg_free_blocks_count_set(fs, group++,
1400 group_free);
1401 count = 0;
1402 group_free = 0;
1403 }
1404 }
1405 total_free = EXT2FS_C2B(fs, total_free);
1406 ext2fs_free_blocks_count_set(fs->super, total_free);
1407
1408 /*
1409 * Next, calculate the inode statistics
1410 */
1411 group_free = 0;
1412 total_free = 0;
1413 count = 0;
1414 group = 0;
1415
1416 /* Protect loop from wrap-around if s_inodes_count maxed */
1417 for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
1418 if (!ext2fs_fast_test_inode_bitmap2(fs->inode_map, ino)) {
1419 group_free++;
1420 total_free++;
1421 }
1422 count++;
1423 if ((count == fs->super->s_inodes_per_group) ||
1424 (ino == fs->super->s_inodes_count)) {
1425 ext2fs_bg_free_inodes_count_set(fs, group++,
1426 group_free);
1427 count = 0;
1428 group_free = 0;
1429 }
1430 }
1431 fs->super->s_free_inodes_count = total_free;
1432 ext2fs_mark_super_dirty(fs);
1433 return 0;
1434 }
1435
1436 #define list_for_each_safe(pos, pnext, head) \
1437 for (pos = (head)->next, pnext = pos->next; pos != (head); \
1438 pos = pnext, pnext = pos->next)
1439
1440 static void free_blk_move_list(void)
1441 {
1442 struct list_head *entry, *tmp;
1443 struct blk_move *bmv;
1444
1445 list_for_each_safe(entry, tmp, &blk_move_list) {
1446 bmv = list_entry(entry, struct blk_move, list);
1447 list_del(entry);
1448 ext2fs_free_mem(&bmv);
1449 }
1450 return;
1451 }
1452
1453 static int resize_inode(ext2_filsys fs, unsigned long new_size)
1454 {
1455 errcode_t retval;
1456 int new_ino_blks_per_grp;
1457 ext2fs_block_bitmap bmap;
1458
1459 ext2fs_read_inode_bitmap(fs);
1460 ext2fs_read_block_bitmap(fs);
1461 INIT_LIST_HEAD(&blk_move_list);
1462
1463
1464 new_ino_blks_per_grp = ext2fs_div_ceil(
1465 EXT2_INODES_PER_GROUP(fs->super)*
1466 new_size,
1467 fs->blocksize);
1468
1469 /* We may change the file system.
1470 * Mark the file system as invalid so that
1471 * the user is prompted to run fsck.
1472 */
1473 fs->super->s_state &= ~EXT2_VALID_FS;
1474
1475 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
1476 &bmap);
1477 if (retval) {
1478 fputs(_("Failed to allocate block bitmap when "
1479 "increasing inode size\n"), stderr);
1480 return retval;
1481 }
1482 retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
1483 if (retval) {
1484 fputs(_("Not enough space to increase inode size \n"), stderr);
1485 goto err_out;
1486 }
1487 retval = move_block(fs, bmap);
1488 if (retval) {
1489 fputs(_("Failed to relocate blocks during inode resize \n"),
1490 stderr);
1491 goto err_out;
1492 }
1493 retval = inode_scan_and_fix(fs, bmap);
1494 if (retval)
1495 goto err_out_undo;
1496
1497 retval = group_desc_scan_and_fix(fs, bmap);
1498 if (retval)
1499 goto err_out_undo;
1500
1501 retval = expand_inode_table(fs, new_size);
1502 if (retval)
1503 goto err_out_undo;
1504
1505 ext2fs_calculate_summary_stats(fs);
1506
1507 fs->super->s_state |= EXT2_VALID_FS;
1508 /* mark super block and block bitmap as dirty */
1509 ext2fs_mark_super_dirty(fs);
1510 ext2fs_mark_bb_dirty(fs);
1511
1512 err_out:
1513 free_blk_move_list();
1514 ext2fs_free_block_bitmap(bmap);
1515
1516 return retval;
1517
1518 err_out_undo:
1519 free_blk_move_list();
1520 ext2fs_free_block_bitmap(bmap);
1521 fputs(_("Error in resizing the inode size.\n"
1522 "Run e2undo to undo the "
1523 "file system changes. \n"), stderr);
1524
1525 return retval;
1526 }
1527
1528 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
1529 {
1530 errcode_t retval = 0;
1531 const char *tdb_dir;
1532 char *tdb_file;
1533 char *dev_name, *tmp_name;
1534
1535 #if 0 /* FIXME!! */
1536 /*
1537 * Configuration via a conf file would be
1538 * nice
1539 */
1540 profile_get_string(profile, "scratch_files",
1541 "directory", 0, 0,
1542 &tdb_dir);
1543 #endif
1544 tmp_name = strdup(name);
1545 if (!tmp_name) {
1546 alloc_fn_fail:
1547 com_err(program_name, ENOMEM,
1548 _("Couldn't allocate memory for tdb filename\n"));
1549 return ENOMEM;
1550 }
1551 dev_name = basename(tmp_name);
1552
1553 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1554 if (!tdb_dir)
1555 tdb_dir = "/var/lib/e2fsprogs";
1556
1557 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1558 access(tdb_dir, W_OK))
1559 return 0;
1560
1561 tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
1562 if (!tdb_file)
1563 goto alloc_fn_fail;
1564 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
1565
1566 if (!access(tdb_file, F_OK)) {
1567 if (unlink(tdb_file) < 0) {
1568 retval = errno;
1569 com_err(program_name, retval,
1570 _("while trying to delete %s"),
1571 tdb_file);
1572 free(tdb_file);
1573 return retval;
1574 }
1575 }
1576
1577 set_undo_io_backing_manager(*io_ptr);
1578 *io_ptr = undo_io_manager;
1579 set_undo_io_backup_file(tdb_file);
1580 printf(_("To undo the tune2fs operation please run "
1581 "the command\n e2undo %s %s\n\n"),
1582 tdb_file, name);
1583 free(tdb_file);
1584 free(tmp_name);
1585 return retval;
1586 }
1587
1588 int main(int argc, char **argv)
1589 {
1590 errcode_t retval;
1591 ext2_filsys fs;
1592 struct ext2_super_block *sb;
1593 io_manager io_ptr, io_ptr_orig = NULL;
1594
1595 #ifdef ENABLE_NLS
1596 setlocale(LC_MESSAGES, "");
1597 setlocale(LC_CTYPE, "");
1598 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1599 textdomain(NLS_CAT_NAME);
1600 #endif
1601 if (argc && *argv)
1602 program_name = *argv;
1603 add_error_table(&et_ext2_error_table);
1604
1605 #ifdef CONFIG_BUILD_FINDFS
1606 if (strcmp(get_progname(argv[0]), "findfs") == 0)
1607 do_findfs(argc, argv);
1608 #endif
1609 if (strcmp(get_progname(argv[0]), "e2label") == 0)
1610 parse_e2label_options(argc, argv);
1611 else
1612 parse_tune2fs_options(argc, argv);
1613
1614 #ifdef CONFIG_TESTIO_DEBUG
1615 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
1616 io_ptr = test_io_manager;
1617 test_io_backing_manager = unix_io_manager;
1618 } else
1619 #endif
1620 io_ptr = unix_io_manager;
1621
1622 retry_open:
1623 retval = ext2fs_open2(device_name, io_options, open_flag,
1624 0, 0, io_ptr, &fs);
1625 if (retval) {
1626 com_err(program_name, retval,
1627 _("while trying to open %s"),
1628 device_name);
1629 fprintf(stderr,
1630 _("Couldn't find valid filesystem superblock.\n"));
1631 exit(1);
1632 }
1633
1634 if (I_flag && !io_ptr_orig) {
1635 /*
1636 * Check the inode size is right so we can issue an
1637 * error message and bail before setting up the tdb
1638 * file.
1639 */
1640 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
1641 fprintf(stderr, _("The inode size is already %lu\n"),
1642 new_inode_size);
1643 exit(1);
1644 }
1645 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
1646 fprintf(stderr, _("Shrinking the inode size is "
1647 "not supported\n"));
1648 exit(1);
1649 }
1650
1651 /*
1652 * If inode resize is requested use the
1653 * Undo I/O manager
1654 */
1655 io_ptr_orig = io_ptr;
1656 retval = tune2fs_setup_tdb(device_name, &io_ptr);
1657 if (retval)
1658 exit(1);
1659 if (io_ptr != io_ptr_orig) {
1660 ext2fs_close(fs);
1661 goto retry_open;
1662 }
1663 }
1664
1665 sb = fs->super;
1666 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1667
1668 if (print_label) {
1669 /* For e2label emulation */
1670 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
1671 sb->s_volume_name);
1672 remove_error_table(&et_ext2_error_table);
1673 exit(0);
1674 }
1675
1676 retval = ext2fs_check_if_mounted(device_name, &mount_flags);
1677 if (retval) {
1678 com_err("ext2fs_check_if_mount", retval,
1679 _("while determining whether %s is mounted."),
1680 device_name);
1681 exit(1);
1682 }
1683 /* Normally we only need to write out the superblock */
1684 fs->flags |= EXT2_FLAG_SUPER_ONLY;
1685
1686 if (c_flag) {
1687 sb->s_max_mnt_count = max_mount_count;
1688 ext2fs_mark_super_dirty(fs);
1689 printf(_("Setting maximal mount count to %d\n"),
1690 max_mount_count);
1691 }
1692 if (C_flag) {
1693 sb->s_mnt_count = mount_count;
1694 ext2fs_mark_super_dirty(fs);
1695 printf(_("Setting current mount count to %d\n"), mount_count);
1696 }
1697 if (e_flag) {
1698 sb->s_errors = errors;
1699 ext2fs_mark_super_dirty(fs);
1700 printf(_("Setting error behavior to %d\n"), errors);
1701 }
1702 if (g_flag) {
1703 sb->s_def_resgid = resgid;
1704 ext2fs_mark_super_dirty(fs);
1705 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
1706 }
1707 if (i_flag) {
1708 if (interval >= (1ULL << 32)) {
1709 com_err(program_name, 0,
1710 _("interval between checks is too big (%lu)"),
1711 interval);
1712 exit(1);
1713 }
1714 sb->s_checkinterval = interval;
1715 ext2fs_mark_super_dirty(fs);
1716 printf(_("Setting interval between checks to %lu seconds\n"),
1717 interval);
1718 }
1719 if (m_flag) {
1720 ext2fs_r_blocks_count_set(sb, reserved_ratio *
1721 ext2fs_blocks_count(sb) / 100.0);
1722 ext2fs_mark_super_dirty(fs);
1723 printf (_("Setting reserved blocks percentage to %g%% (%llu blocks)\n"),
1724 reserved_ratio, ext2fs_r_blocks_count(sb));
1725 }
1726 if (r_flag) {
1727 if (reserved_blocks > ext2fs_blocks_count(sb)/2) {
1728 com_err(program_name, 0,
1729 _("reserved blocks count is too big (%llu)"),
1730 reserved_blocks);
1731 exit(1);
1732 }
1733 ext2fs_r_blocks_count_set(sb, reserved_blocks);
1734 ext2fs_mark_super_dirty(fs);
1735 printf(_("Setting reserved blocks count to %llu\n"),
1736 reserved_blocks);
1737 }
1738 if (s_flag == 1) {
1739 if (sb->s_feature_ro_compat &
1740 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
1741 fputs(_("\nThe filesystem already has sparse "
1742 "superblocks.\n"), stderr);
1743 else {
1744 sb->s_feature_ro_compat |=
1745 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1746 sb->s_state &= ~EXT2_VALID_FS;
1747 ext2fs_mark_super_dirty(fs);
1748 printf(_("\nSparse superblock flag set. %s"),
1749 _(please_fsck));
1750 }
1751 }
1752 if (s_flag == 0) {
1753 fputs(_("\nClearing the sparse superflag not supported.\n"),
1754 stderr);
1755 exit(1);
1756 }
1757 if (T_flag) {
1758 sb->s_lastcheck = last_check_time;
1759 ext2fs_mark_super_dirty(fs);
1760 printf(_("Setting time filesystem last checked to %s\n"),
1761 ctime(&last_check_time));
1762 }
1763 if (u_flag) {
1764 sb->s_def_resuid = resuid;
1765 ext2fs_mark_super_dirty(fs);
1766 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
1767 }
1768 if (L_flag) {
1769 if (strlen(new_label) > sizeof(sb->s_volume_name))
1770 fputs(_("Warning: label too long, truncating.\n"),
1771 stderr);
1772 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
1773 strncpy(sb->s_volume_name, new_label,
1774 sizeof(sb->s_volume_name));
1775 ext2fs_mark_super_dirty(fs);
1776 }
1777 if (M_flag) {
1778 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
1779 strncpy(sb->s_last_mounted, new_last_mounted,
1780 sizeof(sb->s_last_mounted));
1781 ext2fs_mark_super_dirty(fs);
1782 }
1783 if (mntopts_cmd)
1784 update_mntopts(fs, mntopts_cmd);
1785 if (features_cmd)
1786 update_feature_set(fs, features_cmd);
1787 if (extended_cmd)
1788 parse_extended_opts(fs, extended_cmd);
1789 if (journal_size || journal_device)
1790 add_journal(fs);
1791
1792 if (U_flag) {
1793 int set_csum = 0;
1794 dgrp_t i;
1795
1796 if (sb->s_feature_ro_compat &
1797 EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
1798 /*
1799 * Determine if the block group checksums are
1800 * correct so we know whether or not to set
1801 * them later on.
1802 */
1803 for (i = 0; i < fs->group_desc_count; i++)
1804 if (!ext2fs_group_desc_csum_verify(fs, i))
1805 break;
1806 if (i >= fs->group_desc_count)
1807 set_csum = 1;
1808 }
1809 if ((strcasecmp(new_UUID, "null") == 0) ||
1810 (strcasecmp(new_UUID, "clear") == 0)) {
1811 uuid_clear(sb->s_uuid);
1812 } else if (strcasecmp(new_UUID, "time") == 0) {
1813 uuid_generate_time(sb->s_uuid);
1814 } else if (strcasecmp(new_UUID, "random") == 0) {
1815 uuid_generate(sb->s_uuid);
1816 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
1817 com_err(program_name, 0, _("Invalid UUID format\n"));
1818 exit(1);
1819 }
1820 if (set_csum) {
1821 for (i = 0; i < fs->group_desc_count; i++)
1822 ext2fs_group_desc_csum_set(fs, i);
1823 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1824 }
1825 ext2fs_mark_super_dirty(fs);
1826 }
1827 if (I_flag) {
1828 if (mount_flags & EXT2_MF_MOUNTED) {
1829 fputs(_("The inode size may only be "
1830 "changed when the filesystem is "
1831 "unmounted.\n"), stderr);
1832 exit(1);
1833 }
1834 if (fs->super->s_feature_incompat &
1835 EXT4_FEATURE_INCOMPAT_FLEX_BG) {
1836 fputs(_("Changing the inode size not supported for "
1837 "filesystems with the flex_bg\n"
1838 "feature enabled.\n"),
1839 stderr);
1840 exit(1);
1841 }
1842 /*
1843 * We want to update group descriptor also
1844 * with the new free inode count
1845 */
1846 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1847 if (resize_inode(fs, new_inode_size) == 0) {
1848 printf(_("Setting inode size %lu\n"),
1849 new_inode_size);
1850 }
1851 }
1852
1853 if (l_flag)
1854 list_super(sb);
1855 if (stride_set) {
1856 sb->s_raid_stride = stride;
1857 ext2fs_mark_super_dirty(fs);
1858 printf(_("Setting stride size to %d\n"), stride);
1859 }
1860 if (stripe_width_set) {
1861 sb->s_raid_stripe_width = stripe_width;
1862 ext2fs_mark_super_dirty(fs);
1863 printf(_("Setting stripe width to %d\n"), stripe_width);
1864 }
1865 free(device_name);
1866 remove_error_table(&et_ext2_error_table);
1867 return (ext2fs_close(fs) ? 1 : 0);
1868 }
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