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tune2fs: Fix mount_opts handling
[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, reserved_blocks;
73 static double reserved_ratio;
74 static unsigned long resgid, resuid;
75 static unsigned short errors;
76 static int open_flag;
77 static char *features_cmd;
78 static char *mntopts_cmd;
79 static int stride, stripe_width;
80 static int stride_set, stripe_width_set;
81 static char *extended_cmd;
82 static unsigned long new_inode_size;
83 static char *ext_mount_opts;
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 blk_t old_loc;
93 blk_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_blk(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_blk(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, blk_t *blocknr,
255 int blockcnt EXT2FS_ATTR((unused)),
256 void *private EXT2FS_ATTR((unused)))
257 {
258 blk_t block;
259 int group;
260
261 block = *blocknr;
262 ext2fs_unmark_block_bitmap(fs->block_map, block);
263 group = ext2fs_group_of_blk(fs, block);
264 fs->group_desc[group].bg_free_blocks_count++;
265 ext2fs_group_desc_csum_set(fs, group);
266 fs->super->s_free_blocks_count++;
267 return 0;
268 }
269
270 /*
271 * Remove the journal inode from the filesystem
272 */
273 static void remove_journal_inode(ext2_filsys fs)
274 {
275 struct ext2_inode inode;
276 errcode_t retval;
277 ino_t ino = fs->super->s_journal_inum;
278
279 retval = ext2fs_read_inode(fs, ino, &inode);
280 if (retval) {
281 com_err(program_name, retval,
282 _("while reading journal inode"));
283 exit(1);
284 }
285 if (ino == EXT2_JOURNAL_INO) {
286 retval = ext2fs_read_bitmaps(fs);
287 if (retval) {
288 com_err(program_name, retval,
289 _("while reading bitmaps"));
290 exit(1);
291 }
292 retval = ext2fs_block_iterate(fs, ino,
293 BLOCK_FLAG_READ_ONLY, NULL,
294 release_blocks_proc, NULL);
295 if (retval) {
296 com_err(program_name, retval,
297 _("while clearing journal inode"));
298 exit(1);
299 }
300 memset(&inode, 0, sizeof(inode));
301 ext2fs_mark_bb_dirty(fs);
302 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
303 } else
304 inode.i_flags &= ~EXT2_IMMUTABLE_FL;
305 retval = ext2fs_write_inode(fs, ino, &inode);
306 if (retval) {
307 com_err(program_name, retval,
308 _("while writing journal inode"));
309 exit(1);
310 }
311 fs->super->s_journal_inum = 0;
312 ext2fs_mark_super_dirty(fs);
313 }
314
315 /*
316 * Update the default mount options
317 */
318 static void update_mntopts(ext2_filsys fs, char *mntopts)
319 {
320 struct ext2_super_block *sb = fs->super;
321
322 if (e2p_edit_mntopts(mntopts, &sb->s_default_mount_opts, ~0)) {
323 fprintf(stderr, _("Invalid mount option set: %s\n"),
324 mntopts);
325 exit(1);
326 }
327 ext2fs_mark_super_dirty(fs);
328 }
329
330 static void request_fsck_afterwards(ext2_filsys fs)
331 {
332 static int requested = 0;
333
334 if (requested++)
335 return;
336 fs->super->s_state &= ~EXT2_VALID_FS;
337 printf("\n%s\n", _(please_fsck));
338 if (mount_flags & EXT2_MF_READONLY)
339 printf(_("(and reboot afterwards!)\n"));
340 }
341
342 /*
343 * Update the feature set as provided by the user.
344 */
345 static void update_feature_set(ext2_filsys fs, char *features)
346 {
347 struct ext2_super_block *sb = fs->super;
348 struct ext2_group_desc *gd;
349 errcode_t retval;
350 __u32 old_features[3];
351 int i, type_err;
352 unsigned int mask_err;
353
354 #define FEATURE_ON(type, mask) (!(old_features[(type)] & (mask)) && \
355 ((&sb->s_feature_compat)[(type)] & (mask)))
356 #define FEATURE_OFF(type, mask) ((old_features[(type)] & (mask)) && \
357 !((&sb->s_feature_compat)[(type)] & (mask)))
358 #define FEATURE_CHANGED(type, mask) ((mask) & \
359 (old_features[(type)] ^ (&sb->s_feature_compat)[(type)]))
360
361 old_features[E2P_FEATURE_COMPAT] = sb->s_feature_compat;
362 old_features[E2P_FEATURE_INCOMPAT] = sb->s_feature_incompat;
363 old_features[E2P_FEATURE_RO_INCOMPAT] = sb->s_feature_ro_compat;
364
365 if (e2p_edit_feature2(features, &sb->s_feature_compat,
366 ok_features, clear_ok_features,
367 &type_err, &mask_err)) {
368 if (!mask_err)
369 fprintf(stderr,
370 _("Invalid filesystem option set: %s\n"),
371 features);
372 else if (type_err & E2P_FEATURE_NEGATE_FLAG)
373 fprintf(stderr, _("Clearing filesystem feature '%s' "
374 "not supported.\n"),
375 e2p_feature2string(type_err &
376 E2P_FEATURE_TYPE_MASK,
377 mask_err));
378 else
379 fprintf(stderr, _("Setting filesystem feature '%s' "
380 "not supported.\n"),
381 e2p_feature2string(type_err, mask_err));
382 exit(1);
383 }
384
385 if (FEATURE_OFF(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
386 if ((mount_flags & EXT2_MF_MOUNTED) &&
387 !(mount_flags & EXT2_MF_READONLY)) {
388 fputs(_("The has_journal feature may only be "
389 "cleared when the filesystem is\n"
390 "unmounted or mounted "
391 "read-only.\n"), stderr);
392 exit(1);
393 }
394 if (sb->s_feature_incompat &
395 EXT3_FEATURE_INCOMPAT_RECOVER) {
396 fputs(_("The needs_recovery flag is set. "
397 "Please run e2fsck before clearing\n"
398 "the has_journal flag.\n"), stderr);
399 exit(1);
400 }
401 if (sb->s_journal_inum) {
402 remove_journal_inode(fs);
403 }
404 if (sb->s_journal_dev) {
405 remove_journal_device(fs);
406 }
407 }
408
409 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
410 /*
411 * If adding a journal flag, let the create journal
412 * code below handle setting the flag and creating the
413 * journal. We supply a default size if necessary.
414 */
415 if (!journal_size)
416 journal_size = -1;
417 sb->s_feature_compat &= ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
418 }
419
420 if (FEATURE_ON(E2P_FEATURE_COMPAT, EXT2_FEATURE_COMPAT_DIR_INDEX)) {
421 if (!sb->s_def_hash_version)
422 sb->s_def_hash_version = EXT2_HASH_HALF_MD4;
423 if (uuid_is_null((unsigned char *) sb->s_hash_seed))
424 uuid_generate((unsigned char *) sb->s_hash_seed);
425 }
426
427 if (FEATURE_OFF(E2P_FEATURE_INCOMPAT, EXT4_FEATURE_INCOMPAT_FLEX_BG)) {
428 if (ext2fs_check_desc(fs)) {
429 fputs(_("Clearing the flex_bg flag would "
430 "cause the the filesystem to be\n"
431 "inconsistent.\n"), stderr);
432 exit(1);
433 }
434 }
435
436 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
437 EXT4_FEATURE_RO_COMPAT_HUGE_FILE)) {
438 if ((mount_flags & EXT2_MF_MOUNTED) &&
439 !(mount_flags & EXT2_MF_READONLY)) {
440 fputs(_("The huge_file feature may only be "
441 "cleared when the filesystem is\n"
442 "unmounted or mounted "
443 "read-only.\n"), stderr);
444 exit(1);
445 }
446 }
447
448 if (FEATURE_ON(E2P_FEATURE_RO_INCOMPAT,
449 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
450 gd = fs->group_desc;
451 for (i = 0; i < fs->group_desc_count; i++, gd++) {
452 gd->bg_itable_unused = 0;
453 gd->bg_flags = EXT2_BG_INODE_ZEROED;
454 ext2fs_group_desc_csum_set(fs, i);
455 }
456 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
457 }
458
459 if (FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
460 EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
461 gd = fs->group_desc;
462 for (i = 0; i < fs->group_desc_count; i++, gd++) {
463 if ((gd->bg_flags & EXT2_BG_INODE_ZEROED) == 0) {
464 /*
465 * XXX what we really should do is zap
466 * uninitialized inode tables instead.
467 */
468 request_fsck_afterwards(fs);
469 break;
470 }
471 gd->bg_itable_unused = 0;
472 gd->bg_flags = 0;
473 gd->bg_checksum = 0;
474 }
475 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
476 }
477
478 if (sb->s_rev_level == EXT2_GOOD_OLD_REV &&
479 (sb->s_feature_compat || sb->s_feature_ro_compat ||
480 sb->s_feature_incompat))
481 ext2fs_update_dynamic_rev(fs);
482
483 if (FEATURE_CHANGED(E2P_FEATURE_RO_INCOMPAT,
484 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER) ||
485 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
486 EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
487 FEATURE_CHANGED(E2P_FEATURE_INCOMPAT,
488 EXT2_FEATURE_INCOMPAT_FILETYPE) ||
489 FEATURE_CHANGED(E2P_FEATURE_COMPAT,
490 EXT2_FEATURE_COMPAT_RESIZE_INODE) ||
491 FEATURE_OFF(E2P_FEATURE_RO_INCOMPAT,
492 EXT2_FEATURE_RO_COMPAT_LARGE_FILE))
493 request_fsck_afterwards(fs);
494
495 if ((old_features[E2P_FEATURE_COMPAT] != sb->s_feature_compat) ||
496 (old_features[E2P_FEATURE_INCOMPAT] != sb->s_feature_incompat) ||
497 (old_features[E2P_FEATURE_RO_INCOMPAT] != sb->s_feature_ro_compat))
498 ext2fs_mark_super_dirty(fs);
499 }
500
501 /*
502 * Add a journal to the filesystem.
503 */
504 static void add_journal(ext2_filsys fs)
505 {
506 unsigned long journal_blocks;
507 errcode_t retval;
508 ext2_filsys jfs;
509 io_manager io_ptr;
510
511 if (fs->super->s_feature_compat &
512 EXT3_FEATURE_COMPAT_HAS_JOURNAL) {
513 fputs(_("The filesystem already has a journal.\n"), stderr);
514 goto err;
515 }
516 if (journal_device) {
517 check_plausibility(journal_device);
518 check_mount(journal_device, 0, _("journal"));
519 #ifdef CONFIG_TESTIO_DEBUG
520 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
521 io_ptr = test_io_manager;
522 test_io_backing_manager = unix_io_manager;
523 } else
524 #endif
525 io_ptr = unix_io_manager;
526 retval = ext2fs_open(journal_device, EXT2_FLAG_RW|
527 EXT2_FLAG_JOURNAL_DEV_OK, 0,
528 fs->blocksize, io_ptr, &jfs);
529 if (retval) {
530 com_err(program_name, retval,
531 _("\n\twhile trying to open journal on %s\n"),
532 journal_device);
533 goto err;
534 }
535 printf(_("Creating journal on device %s: "),
536 journal_device);
537 fflush(stdout);
538
539 retval = ext2fs_add_journal_device(fs, jfs);
540 ext2fs_close(jfs);
541 if (retval) {
542 com_err(program_name, retval,
543 _("while adding filesystem to journal on %s"),
544 journal_device);
545 goto err;
546 }
547 fputs(_("done\n"), stdout);
548 } else if (journal_size) {
549 fputs(_("Creating journal inode: "), stdout);
550 fflush(stdout);
551 journal_blocks = figure_journal_size(journal_size, fs);
552
553 retval = ext2fs_add_journal_inode(fs, journal_blocks,
554 journal_flags);
555 if (retval) {
556 fprintf(stderr, "\n");
557 com_err(program_name, retval,
558 _("\n\twhile trying to create journal file"));
559 exit(1);
560 } else
561 fputs(_("done\n"), stdout);
562 /*
563 * If the filesystem wasn't mounted, we need to force
564 * the block group descriptors out.
565 */
566 if ((mount_flags & EXT2_MF_MOUNTED) == 0)
567 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
568 }
569 print_check_message(fs);
570 return;
571
572 err:
573 free(journal_device);
574 exit(1);
575 }
576
577
578 static void parse_e2label_options(int argc, char ** argv)
579 {
580 if ((argc < 2) || (argc > 3)) {
581 fputs(_("Usage: e2label device [newlabel]\n"), stderr);
582 exit(1);
583 }
584 io_options = strchr(argv[1], '?');
585 if (io_options)
586 *io_options++ = 0;
587 device_name = blkid_get_devname(NULL, argv[1], NULL);
588 if (!device_name) {
589 com_err("e2label", 0, _("Unable to resolve '%s'"),
590 argv[1]);
591 exit(1);
592 }
593 open_flag = EXT2_FLAG_JOURNAL_DEV_OK;
594 if (argc == 3) {
595 open_flag |= EXT2_FLAG_RW;
596 L_flag = 1;
597 new_label = argv[2];
598 } else
599 print_label++;
600 }
601
602 static time_t parse_time(char *str)
603 {
604 struct tm ts;
605
606 if (strcmp(str, "now") == 0) {
607 return (time(0));
608 }
609 memset(&ts, 0, sizeof(ts));
610 #ifdef HAVE_STRPTIME
611 strptime(str, "%Y%m%d%H%M%S", &ts);
612 #else
613 sscanf(str, "%4d%2d%2d%2d%2d%2d", &ts.tm_year, &ts.tm_mon,
614 &ts.tm_mday, &ts.tm_hour, &ts.tm_min, &ts.tm_sec);
615 ts.tm_year -= 1900;
616 ts.tm_mon -= 1;
617 if (ts.tm_year < 0 || ts.tm_mon < 0 || ts.tm_mon > 11 ||
618 ts.tm_mday < 0 || ts.tm_mday > 31 || ts.tm_hour > 23 ||
619 ts.tm_min > 59 || ts.tm_sec > 61)
620 ts.tm_mday = 0;
621 #endif
622 if (ts.tm_mday == 0) {
623 com_err(program_name, 0,
624 _("Couldn't parse date/time specifier: %s"),
625 str);
626 usage();
627 }
628 ts.tm_isdst = -1;
629 return (mktime(&ts));
630 }
631
632 static void parse_tune2fs_options(int argc, char **argv)
633 {
634 int c;
635 char *tmp;
636 struct group *gr;
637 struct passwd *pw;
638
639 open_flag = 0;
640
641 printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
642 while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:E:I:J:L:M:O:T:U:")) != EOF)
643 switch (c) {
644 case 'c':
645 max_mount_count = strtol(optarg, &tmp, 0);
646 if (*tmp || max_mount_count > 16000) {
647 com_err(program_name, 0,
648 _("bad mounts count - %s"),
649 optarg);
650 usage();
651 }
652 if (max_mount_count == 0)
653 max_mount_count = -1;
654 c_flag = 1;
655 open_flag = EXT2_FLAG_RW;
656 break;
657 case 'C':
658 mount_count = strtoul(optarg, &tmp, 0);
659 if (*tmp || mount_count > 16000) {
660 com_err(program_name, 0,
661 _("bad mounts count - %s"),
662 optarg);
663 usage();
664 }
665 C_flag = 1;
666 open_flag = EXT2_FLAG_RW;
667 break;
668 case 'e':
669 if (strcmp(optarg, "continue") == 0)
670 errors = EXT2_ERRORS_CONTINUE;
671 else if (strcmp(optarg, "remount-ro") == 0)
672 errors = EXT2_ERRORS_RO;
673 else if (strcmp(optarg, "panic") == 0)
674 errors = EXT2_ERRORS_PANIC;
675 else {
676 com_err(program_name, 0,
677 _("bad error behavior - %s"),
678 optarg);
679 usage();
680 }
681 e_flag = 1;
682 open_flag = EXT2_FLAG_RW;
683 break;
684 case 'E':
685 extended_cmd = optarg;
686 open_flag |= EXT2_FLAG_RW;
687 break;
688 case 'f': /* Force */
689 f_flag = 1;
690 break;
691 case 'g':
692 resgid = strtoul(optarg, &tmp, 0);
693 if (*tmp) {
694 gr = getgrnam(optarg);
695 if (gr == NULL)
696 tmp = optarg;
697 else {
698 resgid = gr->gr_gid;
699 *tmp = 0;
700 }
701 }
702 if (*tmp) {
703 com_err(program_name, 0,
704 _("bad gid/group name - %s"),
705 optarg);
706 usage();
707 }
708 g_flag = 1;
709 open_flag = EXT2_FLAG_RW;
710 break;
711 case 'i':
712 interval = strtoul(optarg, &tmp, 0);
713 switch (*tmp) {
714 case 's':
715 tmp++;
716 break;
717 case '\0':
718 case 'd':
719 case 'D': /* days */
720 interval *= 86400;
721 if (*tmp != '\0')
722 tmp++;
723 break;
724 case 'm':
725 case 'M': /* months! */
726 interval *= 86400 * 30;
727 tmp++;
728 break;
729 case 'w':
730 case 'W': /* weeks */
731 interval *= 86400 * 7;
732 tmp++;
733 break;
734 }
735 if (*tmp) {
736 com_err(program_name, 0,
737 _("bad interval - %s"), optarg);
738 usage();
739 }
740 i_flag = 1;
741 open_flag = EXT2_FLAG_RW;
742 break;
743 case 'j':
744 if (!journal_size)
745 journal_size = -1;
746 open_flag = EXT2_FLAG_RW;
747 break;
748 case 'J':
749 parse_journal_opts(optarg);
750 open_flag = EXT2_FLAG_RW;
751 break;
752 case 'l':
753 l_flag = 1;
754 break;
755 case 'L':
756 new_label = optarg;
757 L_flag = 1;
758 open_flag |= EXT2_FLAG_RW |
759 EXT2_FLAG_JOURNAL_DEV_OK;
760 break;
761 case 'm':
762 reserved_ratio = strtod(optarg, &tmp);
763 if (*tmp || reserved_ratio > 50 ||
764 reserved_ratio < 0) {
765 com_err(program_name, 0,
766 _("bad reserved block ratio - %s"),
767 optarg);
768 usage();
769 }
770 m_flag = 1;
771 open_flag = EXT2_FLAG_RW;
772 break;
773 case 'M':
774 new_last_mounted = optarg;
775 M_flag = 1;
776 open_flag = EXT2_FLAG_RW;
777 break;
778 case 'o':
779 if (mntopts_cmd) {
780 com_err(program_name, 0,
781 _("-o may only be specified once"));
782 usage();
783 }
784 mntopts_cmd = optarg;
785 open_flag = EXT2_FLAG_RW;
786 break;
787
788 case 'O':
789 if (features_cmd) {
790 com_err(program_name, 0,
791 _("-O may only be specified once"));
792 usage();
793 }
794 features_cmd = optarg;
795 open_flag = EXT2_FLAG_RW;
796 break;
797 case 'r':
798 reserved_blocks = strtoul(optarg, &tmp, 0);
799 if (*tmp) {
800 com_err(program_name, 0,
801 _("bad reserved blocks count - %s"),
802 optarg);
803 usage();
804 }
805 r_flag = 1;
806 open_flag = EXT2_FLAG_RW;
807 break;
808 case 's': /* Deprecated */
809 s_flag = atoi(optarg);
810 open_flag = EXT2_FLAG_RW;
811 break;
812 case 'T':
813 T_flag = 1;
814 last_check_time = parse_time(optarg);
815 open_flag = EXT2_FLAG_RW;
816 break;
817 case 'u':
818 resuid = strtoul(optarg, &tmp, 0);
819 if (*tmp) {
820 pw = getpwnam(optarg);
821 if (pw == NULL)
822 tmp = optarg;
823 else {
824 resuid = pw->pw_uid;
825 *tmp = 0;
826 }
827 }
828 if (*tmp) {
829 com_err(program_name, 0,
830 _("bad uid/user name - %s"),
831 optarg);
832 usage();
833 }
834 u_flag = 1;
835 open_flag = EXT2_FLAG_RW;
836 break;
837 case 'U':
838 new_UUID = optarg;
839 U_flag = 1;
840 open_flag = EXT2_FLAG_RW |
841 EXT2_FLAG_JOURNAL_DEV_OK;
842 break;
843 case 'I':
844 new_inode_size = strtoul(optarg, &tmp, 0);
845 if (*tmp) {
846 com_err(program_name, 0,
847 _("bad inode size - %s"),
848 optarg);
849 usage();
850 }
851 if (!((new_inode_size &
852 (new_inode_size - 1)) == 0)) {
853 com_err(program_name, 0,
854 _("Inode size must be a "
855 "power of two- %s"),
856 optarg);
857 usage();
858 }
859 open_flag = EXT2_FLAG_RW;
860 I_flag = 1;
861 break;
862 default:
863 usage();
864 }
865 if (optind < argc - 1 || optind == argc)
866 usage();
867 if (!open_flag && !l_flag)
868 usage();
869 io_options = strchr(argv[optind], '?');
870 if (io_options)
871 *io_options++ = 0;
872 device_name = blkid_get_devname(NULL, argv[optind], NULL);
873 if (!device_name) {
874 com_err("tune2fs", 0, _("Unable to resolve '%s'"),
875 argv[optind]);
876 exit(1);
877 }
878 }
879
880 #ifdef CONFIG_BUILD_FINDFS
881 void do_findfs(int argc, char **argv)
882 {
883 char *dev;
884
885 if ((argc != 2) ||
886 (strncmp(argv[1], "LABEL=", 6) && strncmp(argv[1], "UUID=", 5))) {
887 fprintf(stderr, "Usage: findfs LABEL=<label>|UUID=<uuid>\n");
888 exit(2);
889 }
890 dev = blkid_get_devname(NULL, argv[1], NULL);
891 if (!dev) {
892 com_err("findfs", 0, _("Unable to resolve '%s'"),
893 argv[1]);
894 exit(1);
895 }
896 puts(dev);
897 exit(0);
898 }
899 #endif
900
901 static void parse_extended_opts(ext2_filsys fs, const char *opts)
902 {
903 char *buf, *token, *next, *p, *arg;
904 int len, hash_alg;
905 int r_usage = 0;
906
907 len = strlen(opts);
908 buf = malloc(len+1);
909 if (!buf) {
910 fprintf(stderr,
911 _("Couldn't allocate memory to parse options!\n"));
912 exit(1);
913 }
914 strcpy(buf, opts);
915 for (token = buf; token && *token; token = next) {
916 p = strchr(token, ',');
917 next = 0;
918 if (p) {
919 *p = 0;
920 next = p+1;
921 }
922 arg = strchr(token, '=');
923 if (arg) {
924 *arg = 0;
925 arg++;
926 }
927 if (!strcmp(token, "test_fs")) {
928 fs->super->s_flags |= EXT2_FLAGS_TEST_FILESYS;
929 printf("Setting test filesystem flag\n");
930 ext2fs_mark_super_dirty(fs);
931 } else if (!strcmp(token, "^test_fs")) {
932 fs->super->s_flags &= ~EXT2_FLAGS_TEST_FILESYS;
933 printf("Clearing test filesystem flag\n");
934 ext2fs_mark_super_dirty(fs);
935 } else if (strcmp(token, "stride") == 0) {
936 if (!arg) {
937 r_usage++;
938 continue;
939 }
940 stride = strtoul(arg, &p, 0);
941 if (*p) {
942 fprintf(stderr,
943 _("Invalid RAID stride: %s\n"),
944 arg);
945 r_usage++;
946 continue;
947 }
948 stride_set = 1;
949 } else if (strcmp(token, "stripe-width") == 0 ||
950 strcmp(token, "stripe_width") == 0) {
951 if (!arg) {
952 r_usage++;
953 continue;
954 }
955 stripe_width = strtoul(arg, &p, 0);
956 if (*p) {
957 fprintf(stderr,
958 _("Invalid RAID stripe-width: %s\n"),
959 arg);
960 r_usage++;
961 continue;
962 }
963 stripe_width_set = 1;
964 } else if (strcmp(token, "hash_alg") == 0 ||
965 strcmp(token, "hash-alg") == 0) {
966 if (!arg) {
967 r_usage++;
968 continue;
969 }
970 hash_alg = e2p_string2hash(arg);
971 if (hash_alg < 0) {
972 fprintf(stderr,
973 _("Invalid hash algorithm: %s\n"),
974 arg);
975 r_usage++;
976 continue;
977 }
978 fs->super->s_def_hash_version = hash_alg;
979 printf(_("Setting default hash algorithm "
980 "to %s (%d)\n"),
981 arg, hash_alg);
982 ext2fs_mark_super_dirty(fs);
983 } else if (!strcmp(token, "mount_opts")) {
984 if (!arg) {
985 r_usage++;
986 continue;
987 }
988 if (strlen(arg) >= sizeof(fs->super->s_mount_opts)) {
989 fprintf(stderr,
990 "Extended mount options too long\n");
991 continue;
992 }
993 ext_mount_opts = strdup(arg);
994 } else
995 r_usage++;
996 }
997 if (r_usage) {
998 fprintf(stderr, _("\nBad options specified.\n\n"
999 "Extended options are separated by commas, "
1000 "and may take an argument which\n"
1001 "\tis set off by an equals ('=') sign.\n\n"
1002 "Valid extended options are:\n"
1003 "\thash_alg=<hash algorithm>\n"
1004 "\tmount_opts=<extended default mount options>\n"
1005 "\tstride=<RAID per-disk chunk size in blocks>\n"
1006 "\tstripe_width=<RAID stride*data disks in blocks>\n"
1007 "\ttest_fs\n"
1008 "\t^test_fs\n"));
1009 free(buf);
1010 exit(1);
1011 }
1012 free(buf);
1013 }
1014
1015 /*
1016 * Fill in the block bitmap bmap with the information regarding the
1017 * blocks to be moved
1018 */
1019 static int get_move_bitmaps(ext2_filsys fs, int new_ino_blks_per_grp,
1020 ext2fs_block_bitmap bmap)
1021 {
1022 dgrp_t i;
1023 int retval;
1024 ext2_badblocks_list bb_list = 0;
1025 blk_t j, needed_blocks = 0;
1026 blk_t start_blk, end_blk;
1027
1028 retval = ext2fs_read_bb_inode(fs, &bb_list);
1029 if (retval)
1030 return retval;
1031
1032 for (i = 0; i < fs->group_desc_count; i++) {
1033 start_blk = fs->group_desc[i].bg_inode_table +
1034 fs->inode_blocks_per_group;
1035
1036 end_blk = fs->group_desc[i].bg_inode_table +
1037 new_ino_blks_per_grp;
1038
1039 for (j = start_blk; j < end_blk; j++) {
1040 if (ext2fs_test_block_bitmap(fs->block_map, j)) {
1041 /*
1042 * IF the block is a bad block we fail
1043 */
1044 if (ext2fs_badblocks_list_test(bb_list, j)) {
1045 ext2fs_badblocks_list_free(bb_list);
1046 return ENOSPC;
1047 }
1048
1049 ext2fs_mark_block_bitmap(bmap, j);
1050 } else {
1051 /*
1052 * We are going to use this block for
1053 * inode table. So mark them used.
1054 */
1055 ext2fs_mark_block_bitmap(fs->block_map, j);
1056 }
1057 }
1058 needed_blocks += end_blk - start_blk;
1059 }
1060
1061 ext2fs_badblocks_list_free(bb_list);
1062 if (needed_blocks > fs->super->s_free_blocks_count)
1063 return ENOSPC;
1064
1065 return 0;
1066 }
1067
1068 static int ext2fs_is_meta_block(ext2_filsys fs, blk_t blk)
1069 {
1070 dgrp_t group;
1071 group = ext2fs_group_of_blk(fs, blk);
1072 if (fs->group_desc[group].bg_block_bitmap == blk)
1073 return 1;
1074 if (fs->group_desc[group].bg_inode_bitmap == blk)
1075 return 1;
1076 return 0;
1077 }
1078
1079 static int ext2fs_is_block_in_group(ext2_filsys fs, dgrp_t group, blk_t blk)
1080 {
1081 blk_t start_blk, end_blk;
1082 start_blk = fs->super->s_first_data_block +
1083 EXT2_BLOCKS_PER_GROUP(fs->super) * group;
1084 /*
1085 * We cannot get new block beyond end_blk for for the last block group
1086 * so we can check with EXT2_BLOCKS_PER_GROUP even for last block group
1087 */
1088 end_blk = start_blk + EXT2_BLOCKS_PER_GROUP(fs->super);
1089 if (blk >= start_blk && blk <= end_blk)
1090 return 1;
1091 return 0;
1092 }
1093
1094 static int move_block(ext2_filsys fs, ext2fs_block_bitmap bmap)
1095 {
1096
1097 char *buf;
1098 dgrp_t group;
1099 errcode_t retval;
1100 int meta_data = 0;
1101 blk_t blk, new_blk, goal;
1102 struct blk_move *bmv;
1103
1104 retval = ext2fs_get_mem(fs->blocksize, &buf);
1105 if (retval)
1106 return retval;
1107
1108 for (new_blk = blk = fs->super->s_first_data_block;
1109 blk < fs->super->s_blocks_count; blk++) {
1110 if (!ext2fs_test_block_bitmap(bmap, blk))
1111 continue;
1112
1113 if (ext2fs_is_meta_block(fs, blk)) {
1114 /*
1115 * If the block is mapping a fs meta data block
1116 * like group desc/block bitmap/inode bitmap. We
1117 * should find a block in the same group and fix
1118 * the respective fs metadata pointers. Otherwise
1119 * fail
1120 */
1121 group = ext2fs_group_of_blk(fs, blk);
1122 goal = ext2fs_group_first_block(fs, group);
1123 meta_data = 1;
1124
1125 } else {
1126 goal = new_blk;
1127 }
1128 retval = ext2fs_new_block(fs, goal, NULL, &new_blk);
1129 if (retval)
1130 goto err_out;
1131
1132 /* new fs meta data block should be in the same group */
1133 if (meta_data && !ext2fs_is_block_in_group(fs, group, new_blk)) {
1134 retval = ENOSPC;
1135 goto err_out;
1136 }
1137
1138 /* Mark this block as allocated */
1139 ext2fs_mark_block_bitmap(fs->block_map, new_blk);
1140
1141 /* Add it to block move list */
1142 retval = ext2fs_get_mem(sizeof(struct blk_move), &bmv);
1143 if (retval)
1144 goto err_out;
1145
1146 bmv->old_loc = blk;
1147 bmv->new_loc = new_blk;
1148
1149 list_add(&(bmv->list), &blk_move_list);
1150
1151 retval = io_channel_read_blk(fs->io, blk, 1, buf);
1152 if (retval)
1153 goto err_out;
1154
1155 retval = io_channel_write_blk(fs->io, new_blk, 1, buf);
1156 if (retval)
1157 goto err_out;
1158 }
1159
1160 err_out:
1161 ext2fs_free_mem(&buf);
1162 return retval;
1163 }
1164
1165 static blk_t translate_block(blk_t blk)
1166 {
1167 struct list_head *entry;
1168 struct blk_move *bmv;
1169
1170 list_for_each(entry, &blk_move_list) {
1171 bmv = list_entry(entry, struct blk_move, list);
1172 if (bmv->old_loc == blk)
1173 return bmv->new_loc;
1174 }
1175
1176 return 0;
1177 }
1178
1179 static int process_block(ext2_filsys fs EXT2FS_ATTR((unused)),
1180 blk_t *block_nr,
1181 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1182 blk_t ref_block EXT2FS_ATTR((unused)),
1183 int ref_offset EXT2FS_ATTR((unused)),
1184 void *priv_data)
1185 {
1186 int ret = 0;
1187 blk_t new_blk;
1188 ext2fs_block_bitmap bmap = (ext2fs_block_bitmap) priv_data;
1189
1190 if (!ext2fs_test_block_bitmap(bmap, *block_nr))
1191 return 0;
1192 new_blk = translate_block(*block_nr);
1193 if (new_blk) {
1194 *block_nr = new_blk;
1195 /*
1196 * This will force the ext2fs_write_inode in the iterator
1197 */
1198 ret |= BLOCK_CHANGED;
1199 }
1200
1201 return ret;
1202 }
1203
1204 static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1205 {
1206 errcode_t retval = 0;
1207 ext2_ino_t ino;
1208 blk_t blk;
1209 char *block_buf = 0;
1210 struct ext2_inode inode;
1211 ext2_inode_scan scan = NULL;
1212
1213 retval = ext2fs_get_mem(fs->blocksize * 3, &block_buf);
1214 if (retval)
1215 return retval;
1216
1217 retval = ext2fs_open_inode_scan(fs, 0, &scan);
1218 if (retval)
1219 goto err_out;
1220
1221 while (1) {
1222 retval = ext2fs_get_next_inode(scan, &ino, &inode);
1223 if (retval)
1224 goto err_out;
1225
1226 if (!ino)
1227 break;
1228
1229 if (inode.i_links_count == 0)
1230 continue; /* inode not in use */
1231
1232 /* FIXME!!
1233 * If we end up modifying the journal inode
1234 * the sb->s_jnl_blocks will differ. But a
1235 * subsequent e2fsck fixes that.
1236 * Do we need to fix this ??
1237 */
1238
1239 if (inode.i_file_acl &&
1240 ext2fs_test_block_bitmap(bmap, inode.i_file_acl)) {
1241 blk = translate_block(inode.i_file_acl);
1242 if (!blk)
1243 continue;
1244
1245 inode.i_file_acl = blk;
1246
1247 /*
1248 * Write the inode to disk so that inode table
1249 * resizing can work
1250 */
1251 retval = ext2fs_write_inode(fs, ino, &inode);
1252 if (retval)
1253 goto err_out;
1254 }
1255
1256 if (!ext2fs_inode_has_valid_blocks(&inode))
1257 continue;
1258
1259 retval = ext2fs_block_iterate2(fs, ino, 0, block_buf,
1260 process_block, bmap);
1261 if (retval)
1262 goto err_out;
1263
1264 }
1265
1266 err_out:
1267 ext2fs_free_mem(&block_buf);
1268
1269 return retval;
1270 }
1271
1272 /*
1273 * We need to scan for inode and block bitmaps that may need to be
1274 * moved. This can take place if the filesystem was formatted for
1275 * RAID arrays using the mke2fs's extended option "stride".
1276 */
1277 static int group_desc_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
1278 {
1279 dgrp_t i;
1280 blk_t blk, new_blk;
1281
1282 for (i = 0; i < fs->group_desc_count; i++) {
1283 blk = fs->group_desc[i].bg_block_bitmap;
1284 if (ext2fs_test_block_bitmap(bmap, blk)) {
1285 new_blk = translate_block(blk);
1286 if (!new_blk)
1287 continue;
1288 fs->group_desc[i].bg_block_bitmap = new_blk;
1289 }
1290
1291 blk = fs->group_desc[i].bg_inode_bitmap;
1292 if (ext2fs_test_block_bitmap(bmap, blk)) {
1293 new_blk = translate_block(blk);
1294 if (!new_blk)
1295 continue;
1296 fs->group_desc[i].bg_inode_bitmap = new_blk;
1297 }
1298 }
1299 return 0;
1300 }
1301
1302 static int expand_inode_table(ext2_filsys fs, unsigned long new_ino_size)
1303 {
1304 dgrp_t i;
1305 blk_t blk;
1306 errcode_t retval;
1307 int new_ino_blks_per_grp;
1308 unsigned int j;
1309 char *old_itable = NULL, *new_itable = NULL;
1310 char *tmp_old_itable = NULL, *tmp_new_itable = NULL;
1311 unsigned long old_ino_size;
1312 int old_itable_size, new_itable_size;
1313
1314 old_itable_size = fs->inode_blocks_per_group * fs->blocksize;
1315 old_ino_size = EXT2_INODE_SIZE(fs->super);
1316
1317 new_ino_blks_per_grp = ext2fs_div_ceil(
1318 EXT2_INODES_PER_GROUP(fs->super) *
1319 new_ino_size,
1320 fs->blocksize);
1321
1322 new_itable_size = new_ino_blks_per_grp * fs->blocksize;
1323
1324 retval = ext2fs_get_mem(old_itable_size, &old_itable);
1325 if (retval)
1326 return retval;
1327
1328 retval = ext2fs_get_mem(new_itable_size, &new_itable);
1329 if (retval)
1330 goto err_out;
1331
1332 tmp_old_itable = old_itable;
1333 tmp_new_itable = new_itable;
1334
1335 for (i = 0; i < fs->group_desc_count; i++) {
1336 blk = fs->group_desc[i].bg_inode_table;
1337 retval = io_channel_read_blk(fs->io, blk,
1338 fs->inode_blocks_per_group, old_itable);
1339 if (retval)
1340 goto err_out;
1341
1342 for (j = 0; j < EXT2_INODES_PER_GROUP(fs->super); j++) {
1343 memcpy(new_itable, old_itable, old_ino_size);
1344
1345 memset(new_itable+old_ino_size, 0,
1346 new_ino_size - old_ino_size);
1347
1348 new_itable += new_ino_size;
1349 old_itable += old_ino_size;
1350 }
1351
1352 /* reset the pointer */
1353 old_itable = tmp_old_itable;
1354 new_itable = tmp_new_itable;
1355
1356 retval = io_channel_write_blk(fs->io, blk,
1357 new_ino_blks_per_grp, new_itable);
1358 if (retval)
1359 goto err_out;
1360 }
1361
1362 /* Update the meta data */
1363 fs->inode_blocks_per_group = new_ino_blks_per_grp;
1364 fs->super->s_inode_size = new_ino_size;
1365
1366 err_out:
1367 if (old_itable)
1368 ext2fs_free_mem(&old_itable);
1369
1370 if (new_itable)
1371 ext2fs_free_mem(&new_itable);
1372
1373 return retval;
1374 }
1375
1376 static errcode_t ext2fs_calculate_summary_stats(ext2_filsys fs)
1377 {
1378 blk_t blk;
1379 ext2_ino_t ino;
1380 unsigned int group = 0;
1381 unsigned int count = 0;
1382 int total_free = 0;
1383 int group_free = 0;
1384
1385 /*
1386 * First calculate the block statistics
1387 */
1388 for (blk = fs->super->s_first_data_block;
1389 blk < fs->super->s_blocks_count; blk++) {
1390 if (!ext2fs_fast_test_block_bitmap(fs->block_map, blk)) {
1391 group_free++;
1392 total_free++;
1393 }
1394 count++;
1395 if ((count == fs->super->s_blocks_per_group) ||
1396 (blk == fs->super->s_blocks_count-1)) {
1397 fs->group_desc[group++].bg_free_blocks_count =
1398 group_free;
1399 count = 0;
1400 group_free = 0;
1401 }
1402 }
1403 fs->super->s_free_blocks_count = total_free;
1404
1405 /*
1406 * Next, calculate the inode statistics
1407 */
1408 group_free = 0;
1409 total_free = 0;
1410 count = 0;
1411 group = 0;
1412
1413 /* Protect loop from wrap-around if s_inodes_count maxed */
1414 for (ino = 1; ino <= fs->super->s_inodes_count && ino > 0; ino++) {
1415 if (!ext2fs_fast_test_inode_bitmap(fs->inode_map, ino)) {
1416 group_free++;
1417 total_free++;
1418 }
1419 count++;
1420 if ((count == fs->super->s_inodes_per_group) ||
1421 (ino == fs->super->s_inodes_count)) {
1422 fs->group_desc[group++].bg_free_inodes_count =
1423 group_free;
1424 count = 0;
1425 group_free = 0;
1426 }
1427 }
1428 fs->super->s_free_inodes_count = total_free;
1429 ext2fs_mark_super_dirty(fs);
1430 return 0;
1431 }
1432
1433 #define list_for_each_safe(pos, pnext, head) \
1434 for (pos = (head)->next, pnext = pos->next; pos != (head); \
1435 pos = pnext, pnext = pos->next)
1436
1437 static void free_blk_move_list(void)
1438 {
1439 struct list_head *entry, *tmp;
1440 struct blk_move *bmv;
1441
1442 list_for_each_safe(entry, tmp, &blk_move_list) {
1443 bmv = list_entry(entry, struct blk_move, list);
1444 list_del(entry);
1445 ext2fs_free_mem(&bmv);
1446 }
1447 return;
1448 }
1449
1450 static int resize_inode(ext2_filsys fs, unsigned long new_size)
1451 {
1452 errcode_t retval;
1453 int new_ino_blks_per_grp;
1454 ext2fs_block_bitmap bmap;
1455
1456 ext2fs_read_inode_bitmap(fs);
1457 ext2fs_read_block_bitmap(fs);
1458 INIT_LIST_HEAD(&blk_move_list);
1459
1460
1461 new_ino_blks_per_grp = ext2fs_div_ceil(
1462 EXT2_INODES_PER_GROUP(fs->super)*
1463 new_size,
1464 fs->blocksize);
1465
1466 /* We may change the file system.
1467 * Mark the file system as invalid so that
1468 * the user is prompted to run fsck.
1469 */
1470 fs->super->s_state &= ~EXT2_VALID_FS;
1471
1472 retval = ext2fs_allocate_block_bitmap(fs, _("blocks to be moved"),
1473 &bmap);
1474 if (retval) {
1475 fputs(_("Failed to allocate block bitmap when "
1476 "increasing inode size\n"), stderr);
1477 return retval;
1478 }
1479 retval = get_move_bitmaps(fs, new_ino_blks_per_grp, bmap);
1480 if (retval) {
1481 fputs(_("Not enough space to increase inode size \n"), stderr);
1482 goto err_out;
1483 }
1484 retval = move_block(fs, bmap);
1485 if (retval) {
1486 fputs(_("Failed to relocate blocks during inode resize \n"),
1487 stderr);
1488 goto err_out;
1489 }
1490 retval = inode_scan_and_fix(fs, bmap);
1491 if (retval)
1492 goto err_out_undo;
1493
1494 retval = group_desc_scan_and_fix(fs, bmap);
1495 if (retval)
1496 goto err_out_undo;
1497
1498 retval = expand_inode_table(fs, new_size);
1499 if (retval)
1500 goto err_out_undo;
1501
1502 ext2fs_calculate_summary_stats(fs);
1503
1504 fs->super->s_state |= EXT2_VALID_FS;
1505 /* mark super block and block bitmap as dirty */
1506 ext2fs_mark_super_dirty(fs);
1507 ext2fs_mark_bb_dirty(fs);
1508
1509 err_out:
1510 free_blk_move_list();
1511 ext2fs_free_block_bitmap(bmap);
1512
1513 return retval;
1514
1515 err_out_undo:
1516 free_blk_move_list();
1517 ext2fs_free_block_bitmap(bmap);
1518 fputs(_("Error in resizing the inode size.\n"
1519 "Run e2undo to undo the "
1520 "file system changes. \n"), stderr);
1521
1522 return retval;
1523 }
1524
1525 static int tune2fs_setup_tdb(const char *name, io_manager *io_ptr)
1526 {
1527 errcode_t retval = 0;
1528 const char *tdb_dir;
1529 char *tdb_file;
1530 char *dev_name, *tmp_name;
1531
1532 #if 0 /* FIXME!! */
1533 /*
1534 * Configuration via a conf file would be
1535 * nice
1536 */
1537 profile_get_string(profile, "scratch_files",
1538 "directory", 0, 0,
1539 &tdb_dir);
1540 #endif
1541 tmp_name = strdup(name);
1542 if (!tmp_name) {
1543 alloc_fn_fail:
1544 com_err(program_name, ENOMEM,
1545 _("Couldn't allocate memory for tdb filename\n"));
1546 return ENOMEM;
1547 }
1548 dev_name = basename(tmp_name);
1549
1550 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1551 if (!tdb_dir)
1552 tdb_dir = "/var/lib/e2fsprogs";
1553
1554 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1555 access(tdb_dir, W_OK))
1556 return 0;
1557
1558 tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
1559 if (!tdb_file)
1560 goto alloc_fn_fail;
1561 sprintf(tdb_file, "%s/tune2fs-%s.e2undo", tdb_dir, dev_name);
1562
1563 if (!access(tdb_file, F_OK)) {
1564 if (unlink(tdb_file) < 0) {
1565 retval = errno;
1566 com_err(program_name, retval,
1567 _("while trying to delete %s"),
1568 tdb_file);
1569 free(tdb_file);
1570 return retval;
1571 }
1572 }
1573
1574 set_undo_io_backing_manager(*io_ptr);
1575 *io_ptr = undo_io_manager;
1576 set_undo_io_backup_file(tdb_file);
1577 printf(_("To undo the tune2fs operation please run "
1578 "the command\n e2undo %s %s\n\n"),
1579 tdb_file, name);
1580 free(tdb_file);
1581 free(tmp_name);
1582 return retval;
1583 }
1584
1585 int main(int argc, char **argv)
1586 {
1587 errcode_t retval;
1588 ext2_filsys fs;
1589 struct ext2_super_block *sb;
1590 io_manager io_ptr, io_ptr_orig = NULL;
1591
1592 #ifdef ENABLE_NLS
1593 setlocale(LC_MESSAGES, "");
1594 setlocale(LC_CTYPE, "");
1595 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1596 textdomain(NLS_CAT_NAME);
1597 #endif
1598 if (argc && *argv)
1599 program_name = *argv;
1600 add_error_table(&et_ext2_error_table);
1601
1602 #ifdef CONFIG_BUILD_FINDFS
1603 if (strcmp(get_progname(argv[0]), "findfs") == 0)
1604 do_findfs(argc, argv);
1605 #endif
1606 if (strcmp(get_progname(argv[0]), "e2label") == 0)
1607 parse_e2label_options(argc, argv);
1608 else
1609 parse_tune2fs_options(argc, argv);
1610
1611 #ifdef CONFIG_TESTIO_DEBUG
1612 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_DEBUG")) {
1613 io_ptr = test_io_manager;
1614 test_io_backing_manager = unix_io_manager;
1615 } else
1616 #endif
1617 io_ptr = unix_io_manager;
1618
1619 retry_open:
1620 retval = ext2fs_open2(device_name, io_options, open_flag,
1621 0, 0, io_ptr, &fs);
1622 if (retval) {
1623 com_err(program_name, retval,
1624 _("while trying to open %s"),
1625 device_name);
1626 fprintf(stderr,
1627 _("Couldn't find valid filesystem superblock.\n"));
1628 exit(1);
1629 }
1630
1631 if (I_flag && !io_ptr_orig) {
1632 /*
1633 * Check the inode size is right so we can issue an
1634 * error message and bail before setting up the tdb
1635 * file.
1636 */
1637 if (new_inode_size == EXT2_INODE_SIZE(fs->super)) {
1638 fprintf(stderr, _("The inode size is already %lu\n"),
1639 new_inode_size);
1640 exit(1);
1641 }
1642 if (new_inode_size < EXT2_INODE_SIZE(fs->super)) {
1643 fprintf(stderr, _("Shrinking the inode size is "
1644 "not supported\n"));
1645 exit(1);
1646 }
1647
1648 /*
1649 * If inode resize is requested use the
1650 * Undo I/O manager
1651 */
1652 io_ptr_orig = io_ptr;
1653 retval = tune2fs_setup_tdb(device_name, &io_ptr);
1654 if (retval)
1655 exit(1);
1656 if (io_ptr != io_ptr_orig) {
1657 ext2fs_close(fs);
1658 goto retry_open;
1659 }
1660 }
1661
1662 sb = fs->super;
1663 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1664
1665 if (print_label) {
1666 /* For e2label emulation */
1667 printf("%.*s\n", (int) sizeof(sb->s_volume_name),
1668 sb->s_volume_name);
1669 remove_error_table(&et_ext2_error_table);
1670 exit(0);
1671 }
1672
1673 retval = ext2fs_check_if_mounted(device_name, &mount_flags);
1674 if (retval) {
1675 com_err("ext2fs_check_if_mount", retval,
1676 _("while determining whether %s is mounted."),
1677 device_name);
1678 exit(1);
1679 }
1680 /* Normally we only need to write out the superblock */
1681 fs->flags |= EXT2_FLAG_SUPER_ONLY;
1682
1683 if (c_flag) {
1684 sb->s_max_mnt_count = max_mount_count;
1685 ext2fs_mark_super_dirty(fs);
1686 printf(_("Setting maximal mount count to %d\n"),
1687 max_mount_count);
1688 }
1689 if (C_flag) {
1690 sb->s_mnt_count = mount_count;
1691 ext2fs_mark_super_dirty(fs);
1692 printf(_("Setting current mount count to %d\n"), mount_count);
1693 }
1694 if (e_flag) {
1695 sb->s_errors = errors;
1696 ext2fs_mark_super_dirty(fs);
1697 printf(_("Setting error behavior to %d\n"), errors);
1698 }
1699 if (g_flag) {
1700 sb->s_def_resgid = resgid;
1701 ext2fs_mark_super_dirty(fs);
1702 printf(_("Setting reserved blocks gid to %lu\n"), resgid);
1703 }
1704 if (i_flag) {
1705 if (interval >= (1ULL << 32)) {
1706 com_err(program_name, 0,
1707 _("interval between checks is too big (%lu)"),
1708 interval);
1709 exit(1);
1710 }
1711 sb->s_checkinterval = interval;
1712 ext2fs_mark_super_dirty(fs);
1713 printf(_("Setting interval between checks to %lu seconds\n"),
1714 interval);
1715 }
1716 if (m_flag) {
1717 sb->s_r_blocks_count = (unsigned int) (reserved_ratio *
1718 sb->s_blocks_count / 100.0);
1719 ext2fs_mark_super_dirty(fs);
1720 printf(_("Setting reserved blocks percentage to %g%% "
1721 "(%u blocks)\n"),
1722 reserved_ratio, sb->s_r_blocks_count);
1723 }
1724 if (r_flag) {
1725 if (reserved_blocks > sb->s_blocks_count/2) {
1726 com_err(program_name, 0,
1727 _("reserved blocks count is too big (%lu)"),
1728 reserved_blocks);
1729 exit(1);
1730 }
1731 sb->s_r_blocks_count = reserved_blocks;
1732 ext2fs_mark_super_dirty(fs);
1733 printf(_("Setting reserved blocks count to %lu\n"),
1734 reserved_blocks);
1735 }
1736 if (s_flag == 1) {
1737 if (sb->s_feature_ro_compat &
1738 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)
1739 fputs(_("\nThe filesystem already has sparse "
1740 "superblocks.\n"), stderr);
1741 else {
1742 sb->s_feature_ro_compat |=
1743 EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
1744 sb->s_state &= ~EXT2_VALID_FS;
1745 ext2fs_mark_super_dirty(fs);
1746 printf(_("\nSparse superblock flag set. %s"),
1747 _(please_fsck));
1748 }
1749 }
1750 if (s_flag == 0) {
1751 fputs(_("\nClearing the sparse superflag not supported.\n"),
1752 stderr);
1753 exit(1);
1754 }
1755 if (T_flag) {
1756 sb->s_lastcheck = last_check_time;
1757 ext2fs_mark_super_dirty(fs);
1758 printf(_("Setting time filesystem last checked to %s\n"),
1759 ctime(&last_check_time));
1760 }
1761 if (u_flag) {
1762 sb->s_def_resuid = resuid;
1763 ext2fs_mark_super_dirty(fs);
1764 printf(_("Setting reserved blocks uid to %lu\n"), resuid);
1765 }
1766 if (L_flag) {
1767 if (strlen(new_label) > sizeof(sb->s_volume_name))
1768 fputs(_("Warning: label too long, truncating.\n"),
1769 stderr);
1770 memset(sb->s_volume_name, 0, sizeof(sb->s_volume_name));
1771 strncpy(sb->s_volume_name, new_label,
1772 sizeof(sb->s_volume_name));
1773 ext2fs_mark_super_dirty(fs);
1774 }
1775 if (M_flag) {
1776 memset(sb->s_last_mounted, 0, sizeof(sb->s_last_mounted));
1777 strncpy(sb->s_last_mounted, new_last_mounted,
1778 sizeof(sb->s_last_mounted));
1779 ext2fs_mark_super_dirty(fs);
1780 }
1781 if (mntopts_cmd)
1782 update_mntopts(fs, mntopts_cmd);
1783 if (features_cmd)
1784 update_feature_set(fs, features_cmd);
1785 if (extended_cmd)
1786 parse_extended_opts(fs, extended_cmd);
1787 if (journal_size || journal_device)
1788 add_journal(fs);
1789
1790 if (U_flag) {
1791 int set_csum = 0;
1792 dgrp_t i;
1793
1794 if (sb->s_feature_ro_compat &
1795 EXT4_FEATURE_RO_COMPAT_GDT_CSUM) {
1796 /*
1797 * Determine if the block group checksums are
1798 * correct so we know whether or not to set
1799 * them later on.
1800 */
1801 for (i = 0; i < fs->group_desc_count; i++)
1802 if (!ext2fs_group_desc_csum_verify(fs, i))
1803 break;
1804 if (i >= fs->group_desc_count)
1805 set_csum = 1;
1806 }
1807 if ((strcasecmp(new_UUID, "null") == 0) ||
1808 (strcasecmp(new_UUID, "clear") == 0)) {
1809 uuid_clear(sb->s_uuid);
1810 } else if (strcasecmp(new_UUID, "time") == 0) {
1811 uuid_generate_time(sb->s_uuid);
1812 } else if (strcasecmp(new_UUID, "random") == 0) {
1813 uuid_generate(sb->s_uuid);
1814 } else if (uuid_parse(new_UUID, sb->s_uuid)) {
1815 com_err(program_name, 0, _("Invalid UUID format\n"));
1816 exit(1);
1817 }
1818 if (set_csum) {
1819 for (i = 0; i < fs->group_desc_count; i++)
1820 ext2fs_group_desc_csum_set(fs, i);
1821 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1822 }
1823 ext2fs_mark_super_dirty(fs);
1824 }
1825 if (I_flag) {
1826 if (mount_flags & EXT2_MF_MOUNTED) {
1827 fputs(_("The inode size may only be "
1828 "changed when the filesystem is "
1829 "unmounted.\n"), stderr);
1830 exit(1);
1831 }
1832 if (fs->super->s_feature_incompat &
1833 EXT4_FEATURE_INCOMPAT_FLEX_BG) {
1834 fputs(_("Changing the inode size not supported for "
1835 "filesystems with the flex_bg\n"
1836 "feature enabled.\n"),
1837 stderr);
1838 exit(1);
1839 }
1840 /*
1841 * We want to update group descriptor also
1842 * with the new free inode count
1843 */
1844 fs->flags &= ~EXT2_FLAG_SUPER_ONLY;
1845 if (resize_inode(fs, new_inode_size) == 0) {
1846 printf(_("Setting inode size %lu\n"),
1847 new_inode_size);
1848 }
1849 }
1850
1851 if (l_flag)
1852 list_super(sb);
1853 if (stride_set) {
1854 sb->s_raid_stride = stride;
1855 ext2fs_mark_super_dirty(fs);
1856 printf(_("Setting stride size to %d\n"), stride);
1857 }
1858 if (stripe_width_set) {
1859 sb->s_raid_stripe_width = stripe_width;
1860 ext2fs_mark_super_dirty(fs);
1861 printf(_("Setting stripe width to %d\n"), stripe_width);
1862 }
1863 if (ext_mount_opts) {
1864 strncpy(fs->super->s_mount_opts, ext_mount_opts,
1865 sizeof(fs->super->s_mount_opts));
1866 fs->super->s_mount_opts[sizeof(fs->super->s_mount_opts)-1] = 0;
1867 ext2fs_mark_super_dirty(fs);
1868 printf(_("Setting extended default mount options to '%s'\n"),
1869 ext_mount_opts);
1870 free(ext_mount_opts);
1871 }
1872 free(device_name);
1873 remove_error_table(&et_ext2_error_table);
1874 return (ext2fs_close(fs) ? 1 : 0);
1875 }
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