1 | /*
|
---|
2 | * mke2fs.c - Make a ext2fs filesystem.
|
---|
3 | *
|
---|
4 | * Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
|
---|
5 | * 2003, 2004, 2005 by Theodore Ts'o.
|
---|
6 | *
|
---|
7 | * This file may be redistributed under the terms of the GNU Public
|
---|
8 | * License.
|
---|
9 | */
|
---|
10 |
|
---|
11 | /* Usage: mke2fs [options] device
|
---|
12 | *
|
---|
13 | * The device may be a block device or a image of one, but this isn't
|
---|
14 | * enforced (but it's not much fun on a character device :-).
|
---|
15 | */
|
---|
16 |
|
---|
17 | #include <stdio.h>
|
---|
18 | #include <string.h>
|
---|
19 | #include <fcntl.h>
|
---|
20 | #include <ctype.h>
|
---|
21 | #include <time.h>
|
---|
22 | #include <getopt.h>
|
---|
23 | #include <unistd.h>
|
---|
24 | #include <stdlib.h>
|
---|
25 | #include <errno.h>
|
---|
26 | #include <mntent.h>
|
---|
27 | #include <sys/ioctl.h>
|
---|
28 | #include <sys/types.h>
|
---|
29 |
|
---|
30 | #include "e2fsbb.h"
|
---|
31 | #include "ext2fs/ext2_fs.h"
|
---|
32 | #include "uuid/uuid.h"
|
---|
33 | #include "e2p/e2p.h"
|
---|
34 | #include "ext2fs/ext2fs.h"
|
---|
35 | #include "util.h"
|
---|
36 |
|
---|
37 | #define STRIDE_LENGTH 8
|
---|
38 |
|
---|
39 | #ifndef __sparc__
|
---|
40 | #define ZAP_BOOTBLOCK
|
---|
41 | #endif
|
---|
42 |
|
---|
43 | static const char * device_name;
|
---|
44 |
|
---|
45 | /* Command line options */
|
---|
46 | static int cflag;
|
---|
47 | static int quiet;
|
---|
48 | static int super_only;
|
---|
49 | static int force;
|
---|
50 | static int noaction;
|
---|
51 | static int journal_size;
|
---|
52 | static int journal_flags;
|
---|
53 | static const char *bad_blocks_filename;
|
---|
54 | static __u32 fs_stride;
|
---|
55 |
|
---|
56 | static struct ext2_super_block param;
|
---|
57 | static char *creator_os;
|
---|
58 | static char *volume_label;
|
---|
59 | static char *mount_dir;
|
---|
60 | static char *journal_device = NULL;
|
---|
61 | static int sync_kludge; /* Set using the MKE2FS_SYNC env. option */
|
---|
62 |
|
---|
63 | static int sys_page_size = 4096;
|
---|
64 | static int linux_version_code = 0;
|
---|
65 |
|
---|
66 | static int int_log2(int arg)
|
---|
67 | {
|
---|
68 | int l = 0;
|
---|
69 |
|
---|
70 | arg >>= 1;
|
---|
71 | while (arg) {
|
---|
72 | l++;
|
---|
73 | arg >>= 1;
|
---|
74 | }
|
---|
75 | return l;
|
---|
76 | }
|
---|
77 |
|
---|
78 | static int int_log10(unsigned int arg)
|
---|
79 | {
|
---|
80 | int l;
|
---|
81 |
|
---|
82 | for (l=0; arg ; l++)
|
---|
83 | arg = arg / 10;
|
---|
84 | return l;
|
---|
85 | }
|
---|
86 |
|
---|
87 | /*
|
---|
88 | * This function sets the default parameters for a filesystem
|
---|
89 | *
|
---|
90 | * The type is specified by the user. The size is the maximum size
|
---|
91 | * (in megabytes) for which a set of parameters applies, with a size
|
---|
92 | * of zero meaning that it is the default parameter for the type.
|
---|
93 | * Note that order is important in the table below.
|
---|
94 | */
|
---|
95 | #define DEF_MAX_BLOCKSIZE -1
|
---|
96 | static const char default_str[] = "default";
|
---|
97 | struct mke2fs_defaults {
|
---|
98 | const char *type;
|
---|
99 | int size;
|
---|
100 | int blocksize;
|
---|
101 | int inode_ratio;
|
---|
102 | };
|
---|
103 |
|
---|
104 | static const struct mke2fs_defaults settings[] = {
|
---|
105 | { default_str, 0, 4096, 8192 },
|
---|
106 | { default_str, 512, 1024, 4096 },
|
---|
107 | { default_str, 3, 1024, 8192 },
|
---|
108 | { "journal", 0, 4096, 8192 },
|
---|
109 | { "news", 0, 4096, 4096 },
|
---|
110 | { "largefile", 0, 4096, 1024 * 1024 },
|
---|
111 | { "largefile4", 0, 4096, 4096 * 1024 },
|
---|
112 | { 0, 0, 0, 0},
|
---|
113 | };
|
---|
114 |
|
---|
115 | static void set_fs_defaults(const char *fs_type,
|
---|
116 | struct ext2_super_block *super,
|
---|
117 | int blocksize, int sector_size,
|
---|
118 | int *inode_ratio)
|
---|
119 | {
|
---|
120 | int megs;
|
---|
121 | int ratio = 0;
|
---|
122 | const struct mke2fs_defaults *p;
|
---|
123 | int use_bsize = 1024;
|
---|
124 |
|
---|
125 | megs = super->s_blocks_count * (EXT2_BLOCK_SIZE(super) / 1024) / 1024;
|
---|
126 | if (inode_ratio)
|
---|
127 | ratio = *inode_ratio;
|
---|
128 | if (!fs_type)
|
---|
129 | fs_type = default_str;
|
---|
130 | for (p = settings; p->type; p++) {
|
---|
131 | if ((strcmp(p->type, fs_type) != 0) &&
|
---|
132 | (strcmp(p->type, default_str) != 0))
|
---|
133 | continue;
|
---|
134 | if ((p->size != 0) && (megs > p->size))
|
---|
135 | continue;
|
---|
136 | if (ratio == 0)
|
---|
137 | *inode_ratio = p->inode_ratio < blocksize ?
|
---|
138 | blocksize : p->inode_ratio;
|
---|
139 | use_bsize = p->blocksize;
|
---|
140 | }
|
---|
141 | if (blocksize <= 0) {
|
---|
142 | if (use_bsize == DEF_MAX_BLOCKSIZE) {
|
---|
143 | use_bsize = sys_page_size;
|
---|
144 | if ((linux_version_code < (2*65536 + 6*256)) &&
|
---|
145 | (use_bsize > 4096))
|
---|
146 | use_bsize = 4096;
|
---|
147 | }
|
---|
148 | if (sector_size && use_bsize < sector_size)
|
---|
149 | use_bsize = sector_size;
|
---|
150 | if ((blocksize < 0) && (use_bsize < (-blocksize)))
|
---|
151 | use_bsize = -blocksize;
|
---|
152 | blocksize = use_bsize;
|
---|
153 | super->s_blocks_count /= blocksize / 1024;
|
---|
154 | }
|
---|
155 | super->s_log_frag_size = super->s_log_block_size =
|
---|
156 | int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
|
---|
157 | }
|
---|
158 |
|
---|
159 |
|
---|
160 | /*
|
---|
161 | * Helper function for read_bb_file and test_disk
|
---|
162 | */
|
---|
163 | static void invalid_block(ext2_filsys fs EXT2FS_ATTR((unused)), blk_t blk)
|
---|
164 | {
|
---|
165 | bb_error_msg("Bad block %u out of range; ignored", blk);
|
---|
166 | return;
|
---|
167 | }
|
---|
168 |
|
---|
169 | /*
|
---|
170 | * Busybox stuff
|
---|
171 | */
|
---|
172 | static void mke2fs_error_msg_and_die(int retval, const char *fmt, ...)__attribute__ ((format (printf, 2, 3)));
|
---|
173 | static void mke2fs_error_msg_and_die(int retval, const char *fmt, ...)
|
---|
174 | {
|
---|
175 | va_list ap;
|
---|
176 |
|
---|
177 | if (retval) {
|
---|
178 | va_start(ap, fmt);
|
---|
179 | bb_fprintf(stderr,"\nCould not ");
|
---|
180 | bb_vfprintf(stderr, fmt, ap);
|
---|
181 | bb_fprintf(stderr, "\n");
|
---|
182 | va_end(ap);
|
---|
183 | exit(EXIT_FAILURE);
|
---|
184 | }
|
---|
185 | }
|
---|
186 |
|
---|
187 | static void mke2fs_verbose(const char *fmt, ...)__attribute__ ((format (printf, 1, 2)));
|
---|
188 | static void mke2fs_verbose(const char *fmt, ...)
|
---|
189 | {
|
---|
190 | va_list ap;
|
---|
191 |
|
---|
192 | if (!quiet) {
|
---|
193 | va_start(ap, fmt);
|
---|
194 | bb_vfprintf(stdout, fmt, ap);
|
---|
195 | fflush(stdout);
|
---|
196 | va_end(ap);
|
---|
197 | }
|
---|
198 | }
|
---|
199 |
|
---|
200 | static void mke2fs_verbose_done(void)
|
---|
201 | {
|
---|
202 | mke2fs_verbose("done\n");
|
---|
203 | }
|
---|
204 |
|
---|
205 | static void mke2fs_warning_msg(int retval, char *fmt, ... )__attribute__ ((format (printf, 2, 3)));
|
---|
206 | static void mke2fs_warning_msg(int retval, char *fmt, ... )
|
---|
207 | {
|
---|
208 | va_list ap;
|
---|
209 |
|
---|
210 | if (retval) {
|
---|
211 | va_start(ap, fmt);
|
---|
212 | bb_fprintf(stderr,"\nWarning: ");
|
---|
213 | bb_vfprintf(stderr, fmt, ap);
|
---|
214 | bb_fprintf(stderr, "\n");
|
---|
215 | va_end(ap);
|
---|
216 | }
|
---|
217 | }
|
---|
218 |
|
---|
219 | /*
|
---|
220 | * Reads the bad blocks list from a file
|
---|
221 | */
|
---|
222 | static void read_bb_file(ext2_filsys fs, badblocks_list *bb_list,
|
---|
223 | const char *bad_blocks_file)
|
---|
224 | {
|
---|
225 | FILE *f;
|
---|
226 | errcode_t retval;
|
---|
227 |
|
---|
228 | f = bb_xfopen(bad_blocks_file, "r");
|
---|
229 | retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
|
---|
230 | fclose (f);
|
---|
231 | mke2fs_error_msg_and_die(retval, "read bad blocks from list");
|
---|
232 | }
|
---|
233 |
|
---|
234 | /*
|
---|
235 | * Runs the badblocks program to test the disk
|
---|
236 | */
|
---|
237 | static void test_disk(ext2_filsys fs, badblocks_list *bb_list)
|
---|
238 | {
|
---|
239 | FILE *f;
|
---|
240 | errcode_t retval;
|
---|
241 | char buf[1024];
|
---|
242 |
|
---|
243 | sprintf(buf, "badblocks -b %d %s%s%s %d", fs->blocksize,
|
---|
244 | quiet ? "" : "-s ", (cflag > 1) ? "-w " : "",
|
---|
245 | fs->device_name, fs->super->s_blocks_count);
|
---|
246 | mke2fs_verbose("Running command: %s\n", buf);
|
---|
247 | f = popen(buf, "r");
|
---|
248 | if (!f) {
|
---|
249 | bb_perror_msg_and_die("Could not run '%s'", buf);
|
---|
250 | }
|
---|
251 | retval = ext2fs_read_bb_FILE(fs, f, bb_list, invalid_block);
|
---|
252 | pclose(f);
|
---|
253 | mke2fs_error_msg_and_die(retval, "read bad blocks from program");
|
---|
254 | }
|
---|
255 |
|
---|
256 | static void handle_bad_blocks(ext2_filsys fs, badblocks_list bb_list)
|
---|
257 | {
|
---|
258 | dgrp_t i;
|
---|
259 | blk_t j;
|
---|
260 | unsigned must_be_good;
|
---|
261 | blk_t blk;
|
---|
262 | badblocks_iterate bb_iter;
|
---|
263 | errcode_t retval;
|
---|
264 | blk_t group_block;
|
---|
265 | int group;
|
---|
266 | int group_bad;
|
---|
267 |
|
---|
268 | if (!bb_list)
|
---|
269 | return;
|
---|
270 |
|
---|
271 | /*
|
---|
272 | * The primary superblock and group descriptors *must* be
|
---|
273 | * good; if not, abort.
|
---|
274 | */
|
---|
275 | must_be_good = fs->super->s_first_data_block + 1 + fs->desc_blocks;
|
---|
276 | for (i = fs->super->s_first_data_block; i <= must_be_good; i++) {
|
---|
277 | if (ext2fs_badblocks_list_test(bb_list, i)) {
|
---|
278 | bb_error_msg_and_die(
|
---|
279 | "Block %d in primary superblock/group descriptor area bad\n"
|
---|
280 | "Blocks %d through %d must be good in order to build a filesystem\n"
|
---|
281 | "Aborting ...", i, fs->super->s_first_data_block, must_be_good);
|
---|
282 | }
|
---|
283 | }
|
---|
284 |
|
---|
285 | /*
|
---|
286 | * See if any of the bad blocks are showing up in the backup
|
---|
287 | * superblocks and/or group descriptors. If so, issue a
|
---|
288 | * warning and adjust the block counts appropriately.
|
---|
289 | */
|
---|
290 | group_block = fs->super->s_first_data_block +
|
---|
291 | fs->super->s_blocks_per_group;
|
---|
292 |
|
---|
293 | for (i = 1; i < fs->group_desc_count; i++) {
|
---|
294 | group_bad = 0;
|
---|
295 | for (j=0; j < fs->desc_blocks+1; j++) {
|
---|
296 | if (ext2fs_badblocks_list_test(bb_list,
|
---|
297 | group_block + j)) {
|
---|
298 | mke2fs_warning_msg(!group_bad,
|
---|
299 | "the backup superblock/group descriptors at block %d contain\n"
|
---|
300 | "bad blocks\n", group_block);
|
---|
301 | group_bad++;
|
---|
302 | group = ext2fs_group_of_blk(fs, group_block+j);
|
---|
303 | fs->group_desc[group].bg_free_blocks_count++;
|
---|
304 | fs->super->s_free_blocks_count++;
|
---|
305 | }
|
---|
306 | }
|
---|
307 | group_block += fs->super->s_blocks_per_group;
|
---|
308 | }
|
---|
309 |
|
---|
310 | /*
|
---|
311 | * Mark all the bad blocks as used...
|
---|
312 | */
|
---|
313 | retval = ext2fs_badblocks_list_iterate_begin(bb_list, &bb_iter);
|
---|
314 | mke2fs_error_msg_and_die(retval, "mark bad blocks as used");
|
---|
315 |
|
---|
316 | while (ext2fs_badblocks_list_iterate(bb_iter, &blk))
|
---|
317 | ext2fs_mark_block_bitmap(fs->block_map, blk);
|
---|
318 | ext2fs_badblocks_list_iterate_end(bb_iter);
|
---|
319 | }
|
---|
320 |
|
---|
321 | /*
|
---|
322 | * These functions implement a generalized progress meter.
|
---|
323 | */
|
---|
324 | struct progress_struct {
|
---|
325 | char format[20];
|
---|
326 | char backup[80];
|
---|
327 | __u32 max;
|
---|
328 | int skip_progress;
|
---|
329 | };
|
---|
330 |
|
---|
331 | static void progress_init(struct progress_struct *progress,
|
---|
332 | const char *label,__u32 max)
|
---|
333 | {
|
---|
334 | int i;
|
---|
335 |
|
---|
336 | memset(progress, 0, sizeof(struct progress_struct));
|
---|
337 | if (quiet)
|
---|
338 | return;
|
---|
339 |
|
---|
340 | /*
|
---|
341 | * Figure out how many digits we need
|
---|
342 | */
|
---|
343 | i = int_log10(max);
|
---|
344 | sprintf(progress->format, "%%%dd/%%%dld", i, i);
|
---|
345 | memset(progress->backup, '\b', sizeof(progress->backup)-1);
|
---|
346 | progress->backup[sizeof(progress->backup)-1] = 0;
|
---|
347 | if ((2*i)+1 < (int) sizeof(progress->backup))
|
---|
348 | progress->backup[(2*i)+1] = 0;
|
---|
349 | progress->max = max;
|
---|
350 |
|
---|
351 | progress->skip_progress = 0;
|
---|
352 | if (getenv("MKE2FS_SKIP_PROGRESS"))
|
---|
353 | progress->skip_progress++;
|
---|
354 |
|
---|
355 | fputs(label, stdout);
|
---|
356 | fflush(stdout);
|
---|
357 | }
|
---|
358 |
|
---|
359 | static void progress_update(struct progress_struct *progress, __u32 val)
|
---|
360 | {
|
---|
361 | if ((progress->format[0] == 0) || progress->skip_progress)
|
---|
362 | return;
|
---|
363 | printf(progress->format, val, progress->max);
|
---|
364 | fputs(progress->backup, stdout);
|
---|
365 | }
|
---|
366 |
|
---|
367 | static void progress_close(struct progress_struct *progress)
|
---|
368 | {
|
---|
369 | if (progress->format[0] == 0)
|
---|
370 | return;
|
---|
371 | printf("%-28s\n", "done");
|
---|
372 | }
|
---|
373 |
|
---|
374 |
|
---|
375 | /*
|
---|
376 | * Helper function which zeros out _num_ blocks starting at _blk_. In
|
---|
377 | * case of an error, the details of the error is returned via _ret_blk_
|
---|
378 | * and _ret_count_ if they are non-NULL pointers. Returns 0 on
|
---|
379 | * success, and an error code on an error.
|
---|
380 | *
|
---|
381 | * As a special case, if the first argument is NULL, then it will
|
---|
382 | * attempt to free the static zeroizing buffer. (This is to keep
|
---|
383 | * programs that check for memory leaks happy.)
|
---|
384 | */
|
---|
385 | static errcode_t zero_blocks(ext2_filsys fs, blk_t blk, int num,
|
---|
386 | struct progress_struct *progress,
|
---|
387 | blk_t *ret_blk, int *ret_count)
|
---|
388 | {
|
---|
389 | int j, count, next_update, next_update_incr;
|
---|
390 | static char *buf;
|
---|
391 | errcode_t retval;
|
---|
392 |
|
---|
393 | /* If fs is null, clean up the static buffer and return */
|
---|
394 | if (!fs) {
|
---|
395 | if (buf) {
|
---|
396 | free(buf);
|
---|
397 | buf = 0;
|
---|
398 | }
|
---|
399 | return 0;
|
---|
400 | }
|
---|
401 | /* Allocate the zeroizing buffer if necessary */
|
---|
402 | if (!buf) {
|
---|
403 | buf = xcalloc(fs->blocksize, STRIDE_LENGTH);
|
---|
404 | }
|
---|
405 | /* OK, do the write loop */
|
---|
406 | next_update = 0;
|
---|
407 | next_update_incr = num / 100;
|
---|
408 | if (next_update_incr < 1)
|
---|
409 | next_update_incr = 1;
|
---|
410 | for (j=0; j < num; j += STRIDE_LENGTH, blk += STRIDE_LENGTH) {
|
---|
411 | count = num - j;
|
---|
412 | if (count > STRIDE_LENGTH)
|
---|
413 | count = STRIDE_LENGTH;
|
---|
414 | retval = io_channel_write_blk(fs->io, blk, count, buf);
|
---|
415 | if (retval) {
|
---|
416 | if (ret_count)
|
---|
417 | *ret_count = count;
|
---|
418 | if (ret_blk)
|
---|
419 | *ret_blk = blk;
|
---|
420 | return retval;
|
---|
421 | }
|
---|
422 | if (progress && j > next_update) {
|
---|
423 | next_update += num / 100;
|
---|
424 | progress_update(progress, blk);
|
---|
425 | }
|
---|
426 | }
|
---|
427 | return 0;
|
---|
428 | }
|
---|
429 |
|
---|
430 | static void write_inode_tables(ext2_filsys fs)
|
---|
431 | {
|
---|
432 | errcode_t retval;
|
---|
433 | blk_t blk;
|
---|
434 | dgrp_t i;
|
---|
435 | int num;
|
---|
436 | struct progress_struct progress;
|
---|
437 |
|
---|
438 | if (quiet)
|
---|
439 | memset(&progress, 0, sizeof(progress));
|
---|
440 | else
|
---|
441 | progress_init(&progress, "Writing inode tables: ",
|
---|
442 | fs->group_desc_count);
|
---|
443 |
|
---|
444 | for (i = 0; i < fs->group_desc_count; i++) {
|
---|
445 | progress_update(&progress, i);
|
---|
446 |
|
---|
447 | blk = fs->group_desc[i].bg_inode_table;
|
---|
448 | num = fs->inode_blocks_per_group;
|
---|
449 |
|
---|
450 | retval = zero_blocks(fs, blk, num, 0, &blk, &num);
|
---|
451 | mke2fs_error_msg_and_die(retval,
|
---|
452 | "write %d blocks in inode table starting at %d.",
|
---|
453 | num, blk);
|
---|
454 | if (sync_kludge) {
|
---|
455 | if (sync_kludge == 1)
|
---|
456 | sync();
|
---|
457 | else if ((i % sync_kludge) == 0)
|
---|
458 | sync();
|
---|
459 | }
|
---|
460 | }
|
---|
461 | zero_blocks(0, 0, 0, 0, 0, 0);
|
---|
462 | progress_close(&progress);
|
---|
463 | }
|
---|
464 |
|
---|
465 | static void create_root_dir(ext2_filsys fs)
|
---|
466 | {
|
---|
467 | errcode_t retval;
|
---|
468 | struct ext2_inode inode;
|
---|
469 |
|
---|
470 | retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, EXT2_ROOT_INO, 0);
|
---|
471 | mke2fs_error_msg_and_die(retval, "create root dir");
|
---|
472 | if (geteuid()) {
|
---|
473 | retval = ext2fs_read_inode(fs, EXT2_ROOT_INO, &inode);
|
---|
474 | mke2fs_error_msg_and_die(retval, "read root inode");
|
---|
475 | inode.i_uid = getuid();
|
---|
476 | if (inode.i_uid)
|
---|
477 | inode.i_gid = getgid();
|
---|
478 | retval = ext2fs_write_new_inode(fs, EXT2_ROOT_INO, &inode);
|
---|
479 | mke2fs_error_msg_and_die(retval, "set root inode ownership");
|
---|
480 | }
|
---|
481 | }
|
---|
482 |
|
---|
483 | static void create_lost_and_found(ext2_filsys fs)
|
---|
484 | {
|
---|
485 | errcode_t retval;
|
---|
486 | ext2_ino_t ino;
|
---|
487 | const char *name = "lost+found";
|
---|
488 | int i = 1;
|
---|
489 | char *msg = "create";
|
---|
490 | int lpf_size = 0;
|
---|
491 |
|
---|
492 | fs->umask = 077;
|
---|
493 | retval = ext2fs_mkdir(fs, EXT2_ROOT_INO, 0, name);
|
---|
494 | if (retval) {
|
---|
495 | goto CREATE_LOST_AND_FOUND_ERROR;
|
---|
496 | }
|
---|
497 |
|
---|
498 | retval = ext2fs_lookup(fs, EXT2_ROOT_INO, name, strlen(name), 0, &ino);
|
---|
499 | if (retval) {
|
---|
500 | msg = "lookup";
|
---|
501 | goto CREATE_LOST_AND_FOUND_ERROR;
|
---|
502 | }
|
---|
503 |
|
---|
504 | for (; i < EXT2_NDIR_BLOCKS; i++) {
|
---|
505 | if ((lpf_size += fs->blocksize) >= 16*1024)
|
---|
506 | break;
|
---|
507 | retval = ext2fs_expand_dir(fs, ino);
|
---|
508 | msg = "expand";
|
---|
509 | CREATE_LOST_AND_FOUND_ERROR:
|
---|
510 | mke2fs_error_msg_and_die(retval, "%s %s", msg, name);
|
---|
511 | }
|
---|
512 | }
|
---|
513 |
|
---|
514 | static void create_bad_block_inode(ext2_filsys fs, badblocks_list bb_list)
|
---|
515 | {
|
---|
516 | errcode_t retval;
|
---|
517 |
|
---|
518 | ext2fs_mark_inode_bitmap(fs->inode_map, EXT2_BAD_INO);
|
---|
519 | fs->group_desc[0].bg_free_inodes_count--;
|
---|
520 | fs->super->s_free_inodes_count--;
|
---|
521 | retval = ext2fs_update_bb_inode(fs, bb_list);
|
---|
522 | mke2fs_error_msg_and_die(retval, "set bad block inode");
|
---|
523 | }
|
---|
524 |
|
---|
525 | static void reserve_inodes(ext2_filsys fs)
|
---|
526 | {
|
---|
527 | ext2_ino_t i;
|
---|
528 | int group;
|
---|
529 |
|
---|
530 | for (i = EXT2_ROOT_INO + 1; i < EXT2_FIRST_INODE(fs->super); i++) {
|
---|
531 | ext2fs_mark_inode_bitmap(fs->inode_map, i);
|
---|
532 | group = ext2fs_group_of_ino(fs, i);
|
---|
533 | fs->group_desc[group].bg_free_inodes_count--;
|
---|
534 | fs->super->s_free_inodes_count--;
|
---|
535 | }
|
---|
536 | ext2fs_mark_ib_dirty(fs);
|
---|
537 | }
|
---|
538 |
|
---|
539 | #define BSD_DISKMAGIC (0x82564557UL) /* The disk magic number */
|
---|
540 | #define BSD_MAGICDISK (0x57455682UL) /* The disk magic number reversed */
|
---|
541 | #define BSD_LABEL_OFFSET 64
|
---|
542 |
|
---|
543 | static void zap_sector(ext2_filsys fs, int sect, int nsect)
|
---|
544 | {
|
---|
545 | char *buf;
|
---|
546 | char *fmt = "could not %s %d";
|
---|
547 | int retval;
|
---|
548 | unsigned int *magic;
|
---|
549 |
|
---|
550 | buf = xmalloc(512*nsect);
|
---|
551 |
|
---|
552 | if (sect == 0) {
|
---|
553 | /* Check for a BSD disklabel, and don't erase it if so */
|
---|
554 | retval = io_channel_read_blk(fs->io, 0, -512, buf);
|
---|
555 | if (retval)
|
---|
556 | mke2fs_warning_msg(retval, fmt, "read block", 0);
|
---|
557 | else {
|
---|
558 | magic = (unsigned int *) (buf + BSD_LABEL_OFFSET);
|
---|
559 | if ((*magic == BSD_DISKMAGIC) ||
|
---|
560 | (*magic == BSD_MAGICDISK))
|
---|
561 | return;
|
---|
562 | }
|
---|
563 | }
|
---|
564 |
|
---|
565 | memset(buf, 0, 512*nsect);
|
---|
566 | io_channel_set_blksize(fs->io, 512);
|
---|
567 | retval = io_channel_write_blk(fs->io, sect, -512*nsect, buf);
|
---|
568 | io_channel_set_blksize(fs->io, fs->blocksize);
|
---|
569 | free(buf);
|
---|
570 | mke2fs_warning_msg(retval, fmt, "erase sector", sect);
|
---|
571 | }
|
---|
572 |
|
---|
573 | static void create_journal_dev(ext2_filsys fs)
|
---|
574 | {
|
---|
575 | struct progress_struct progress;
|
---|
576 | errcode_t retval;
|
---|
577 | char *buf;
|
---|
578 | char *fmt = "%s journal superblock";
|
---|
579 | blk_t blk;
|
---|
580 | int count;
|
---|
581 |
|
---|
582 | retval = ext2fs_create_journal_superblock(fs,
|
---|
583 | fs->super->s_blocks_count, 0, &buf);
|
---|
584 | mke2fs_error_msg_and_die(retval, fmt, "init");
|
---|
585 | if (quiet)
|
---|
586 | memset(&progress, 0, sizeof(progress));
|
---|
587 | else
|
---|
588 | progress_init(&progress, "Zeroing journal device: ",
|
---|
589 | fs->super->s_blocks_count);
|
---|
590 |
|
---|
591 | retval = zero_blocks(fs, 0, fs->super->s_blocks_count,
|
---|
592 | &progress, &blk, &count);
|
---|
593 | mke2fs_error_msg_and_die(retval, "zero journal device (block %u, count %d)",
|
---|
594 | blk, count);
|
---|
595 | zero_blocks(0, 0, 0, 0, 0, 0);
|
---|
596 |
|
---|
597 | retval = io_channel_write_blk(fs->io,
|
---|
598 | fs->super->s_first_data_block+1,
|
---|
599 | 1, buf);
|
---|
600 | mke2fs_error_msg_and_die(retval, fmt, "write");
|
---|
601 | progress_close(&progress);
|
---|
602 | }
|
---|
603 |
|
---|
604 | static void show_stats(ext2_filsys fs)
|
---|
605 | {
|
---|
606 | struct ext2_super_block *s = fs->super;
|
---|
607 | char *os;
|
---|
608 | blk_t group_block;
|
---|
609 | dgrp_t i;
|
---|
610 | int need, col_left;
|
---|
611 |
|
---|
612 | mke2fs_warning_msg((param.s_blocks_count != s->s_blocks_count),
|
---|
613 | "%d blocks unused\n", param.s_blocks_count - s->s_blocks_count);
|
---|
614 | os = e2p_os2string(fs->super->s_creator_os);
|
---|
615 | printf( "Filesystem label=%.*s\n"
|
---|
616 | "OS type: %s\n"
|
---|
617 | "Block size=%u (log=%u)\n"
|
---|
618 | "Fragment size=%u (log=%u)\n"
|
---|
619 | "%u inodes, %u blocks\n"
|
---|
620 | "%u blocks (%2.2f%%) reserved for the super user\n"
|
---|
621 | "First data block=%u\n",
|
---|
622 | (int) sizeof(s->s_volume_name),
|
---|
623 | s->s_volume_name,
|
---|
624 | os,
|
---|
625 | fs->blocksize, s->s_log_block_size,
|
---|
626 | fs->fragsize, s->s_log_frag_size,
|
---|
627 | s->s_inodes_count, s->s_blocks_count,
|
---|
628 | s->s_r_blocks_count, 100.0 * s->s_r_blocks_count / s->s_blocks_count,
|
---|
629 | s->s_first_data_block);
|
---|
630 | free(os);
|
---|
631 | if (s->s_reserved_gdt_blocks) {
|
---|
632 | printf("Maximum filesystem blocks=%lu\n",
|
---|
633 | (s->s_reserved_gdt_blocks + fs->desc_blocks) *
|
---|
634 | (fs->blocksize / sizeof(struct ext2_group_desc)) *
|
---|
635 | s->s_blocks_per_group);
|
---|
636 | }
|
---|
637 | printf( "%u block group%s\n"
|
---|
638 | "%u blocks per group, %u fragments per group\n"
|
---|
639 | "%u inodes per group\n",
|
---|
640 | fs->group_desc_count, (fs->group_desc_count > 1) ? "s" : "",
|
---|
641 | s->s_blocks_per_group, s->s_frags_per_group,
|
---|
642 | s->s_inodes_per_group);
|
---|
643 | if (fs->group_desc_count == 1) {
|
---|
644 | puts("");
|
---|
645 | return;
|
---|
646 | }
|
---|
647 |
|
---|
648 | printf("Superblock backups stored on blocks: ");
|
---|
649 | group_block = s->s_first_data_block;
|
---|
650 | col_left = 0;
|
---|
651 | for (i = 1; i < fs->group_desc_count; i++) {
|
---|
652 | group_block += s->s_blocks_per_group;
|
---|
653 | if (!ext2fs_bg_has_super(fs, i))
|
---|
654 | continue;
|
---|
655 | if (i != 1)
|
---|
656 | printf(", ");
|
---|
657 | need = int_log10(group_block) + 2;
|
---|
658 | if (need > col_left) {
|
---|
659 | printf("\n\t");
|
---|
660 | col_left = 72;
|
---|
661 | }
|
---|
662 | col_left -= need;
|
---|
663 | printf("%u", group_block);
|
---|
664 | }
|
---|
665 | puts("\n");
|
---|
666 | }
|
---|
667 |
|
---|
668 | /*
|
---|
669 | * Set the S_CREATOR_OS field. Return true if OS is known,
|
---|
670 | * otherwise, 0.
|
---|
671 | */
|
---|
672 | static int set_os(struct ext2_super_block *sb, char *os)
|
---|
673 | {
|
---|
674 | if (isdigit (*os)) {
|
---|
675 | sb->s_creator_os = atoi (os);
|
---|
676 | return 1;
|
---|
677 | }
|
---|
678 |
|
---|
679 | if((sb->s_creator_os = e2p_string2os(os)) >= 0) {
|
---|
680 | return 1;
|
---|
681 | } else if (!strcasecmp("GNU", os)) {
|
---|
682 | sb->s_creator_os = EXT2_OS_HURD;
|
---|
683 | return 1;
|
---|
684 | }
|
---|
685 | return 0;
|
---|
686 | }
|
---|
687 |
|
---|
688 | static void parse_extended_opts(struct ext2_super_block *sb_param,
|
---|
689 | const char *opts)
|
---|
690 | {
|
---|
691 | char *buf, *token, *next, *p, *arg;
|
---|
692 | int r_usage = 0;
|
---|
693 |
|
---|
694 | buf = bb_xstrdup(opts);
|
---|
695 | for (token = buf; token && *token; token = next) {
|
---|
696 | p = strchr(token, ',');
|
---|
697 | next = 0;
|
---|
698 | if (p) {
|
---|
699 | *p = 0;
|
---|
700 | next = p+1;
|
---|
701 | }
|
---|
702 | arg = strchr(token, '=');
|
---|
703 | if (arg) {
|
---|
704 | *arg = 0;
|
---|
705 | arg++;
|
---|
706 | }
|
---|
707 | if (strcmp(token, "stride") == 0) {
|
---|
708 | if (!arg) {
|
---|
709 | r_usage++;
|
---|
710 | continue;
|
---|
711 | }
|
---|
712 | fs_stride = strtoul(arg, &p, 0);
|
---|
713 | if (*p || (fs_stride == 0)) {
|
---|
714 | bb_error_msg("Invalid stride parameter: %s", arg);
|
---|
715 | r_usage++;
|
---|
716 | continue;
|
---|
717 | }
|
---|
718 | } else if (!strcmp(token, "resize")) {
|
---|
719 | unsigned long resize, bpg, rsv_groups;
|
---|
720 | unsigned long group_desc_count, desc_blocks;
|
---|
721 | unsigned int gdpb, blocksize;
|
---|
722 | int rsv_gdb;
|
---|
723 |
|
---|
724 | if (!arg) {
|
---|
725 | r_usage++;
|
---|
726 | continue;
|
---|
727 | }
|
---|
728 |
|
---|
729 | resize = parse_num_blocks(arg,
|
---|
730 | sb_param->s_log_block_size);
|
---|
731 |
|
---|
732 | if (resize == 0) {
|
---|
733 | bb_error_msg("Invalid resize parameter: %s", arg);
|
---|
734 | r_usage++;
|
---|
735 | continue;
|
---|
736 | }
|
---|
737 | if (resize <= sb_param->s_blocks_count) {
|
---|
738 | bb_error_msg("The resize maximum must be greater "
|
---|
739 | "than the filesystem size");
|
---|
740 | r_usage++;
|
---|
741 | continue;
|
---|
742 | }
|
---|
743 |
|
---|
744 | blocksize = EXT2_BLOCK_SIZE(sb_param);
|
---|
745 | bpg = sb_param->s_blocks_per_group;
|
---|
746 | if (!bpg)
|
---|
747 | bpg = blocksize * 8;
|
---|
748 | gdpb = blocksize / sizeof(struct ext2_group_desc);
|
---|
749 | group_desc_count = (sb_param->s_blocks_count +
|
---|
750 | bpg - 1) / bpg;
|
---|
751 | desc_blocks = (group_desc_count +
|
---|
752 | gdpb - 1) / gdpb;
|
---|
753 | rsv_groups = (resize + bpg - 1) / bpg;
|
---|
754 | rsv_gdb = (rsv_groups + gdpb - 1) / gdpb -
|
---|
755 | desc_blocks;
|
---|
756 | if (rsv_gdb > EXT2_ADDR_PER_BLOCK(sb_param))
|
---|
757 | rsv_gdb = EXT2_ADDR_PER_BLOCK(sb_param);
|
---|
758 |
|
---|
759 | if (rsv_gdb > 0) {
|
---|
760 | sb_param->s_feature_compat |=
|
---|
761 | EXT2_FEATURE_COMPAT_RESIZE_INODE;
|
---|
762 |
|
---|
763 | sb_param->s_reserved_gdt_blocks = rsv_gdb;
|
---|
764 | }
|
---|
765 | } else
|
---|
766 | r_usage++;
|
---|
767 | }
|
---|
768 | if (r_usage) {
|
---|
769 | bb_error_msg_and_die(
|
---|
770 | "\nBad options specified.\n\n"
|
---|
771 | "Extended options are separated by commas, "
|
---|
772 | "and may take an argument which\n"
|
---|
773 | "\tis set off by an equals ('=') sign.\n\n"
|
---|
774 | "Valid extended options are:\n"
|
---|
775 | "\tstride=<stride length in blocks>\n"
|
---|
776 | "\tresize=<resize maximum size in blocks>\n");
|
---|
777 | }
|
---|
778 | }
|
---|
779 |
|
---|
780 | static __u32 ok_features[3] = {
|
---|
781 | EXT3_FEATURE_COMPAT_HAS_JOURNAL |
|
---|
782 | EXT2_FEATURE_COMPAT_RESIZE_INODE |
|
---|
783 | EXT2_FEATURE_COMPAT_DIR_INDEX, /* Compat */
|
---|
784 | EXT2_FEATURE_INCOMPAT_FILETYPE| /* Incompat */
|
---|
785 | EXT3_FEATURE_INCOMPAT_JOURNAL_DEV|
|
---|
786 | EXT2_FEATURE_INCOMPAT_META_BG,
|
---|
787 | EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER /* R/O compat */
|
---|
788 | };
|
---|
789 |
|
---|
790 | static int PRS(int argc, char *argv[])
|
---|
791 | {
|
---|
792 | int b, c;
|
---|
793 | int size;
|
---|
794 | char * tmp;
|
---|
795 | int blocksize = 0;
|
---|
796 | int inode_ratio = 0;
|
---|
797 | int inode_size = 0;
|
---|
798 | int reserved_ratio = 5;
|
---|
799 | int sector_size = 0;
|
---|
800 | int show_version_only = 0;
|
---|
801 | ext2_ino_t num_inodes = 0;
|
---|
802 | errcode_t retval;
|
---|
803 | char * extended_opts = 0;
|
---|
804 | const char * fs_type = 0;
|
---|
805 | blk_t dev_size;
|
---|
806 | long sysval;
|
---|
807 |
|
---|
808 | /* Update our PATH to include /sbin */
|
---|
809 | e2fs_set_sbin_path();
|
---|
810 |
|
---|
811 | tmp = getenv("MKE2FS_SYNC");
|
---|
812 | if (tmp)
|
---|
813 | sync_kludge = atoi(tmp);
|
---|
814 |
|
---|
815 | /* Determine the system page size if possible */
|
---|
816 | #if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE))
|
---|
817 | #define _SC_PAGESIZE _SC_PAGE_SIZE
|
---|
818 | #endif
|
---|
819 | #ifdef _SC_PAGESIZE
|
---|
820 | sysval = sysconf(_SC_PAGESIZE);
|
---|
821 | if (sysval > 0)
|
---|
822 | sys_page_size = sysval;
|
---|
823 | #endif /* _SC_PAGESIZE */
|
---|
824 |
|
---|
825 | setbuf(stdout, NULL);
|
---|
826 | setbuf(stderr, NULL);
|
---|
827 | memset(¶m, 0, sizeof(struct ext2_super_block));
|
---|
828 | param.s_rev_level = 1; /* Create revision 1 filesystems now */
|
---|
829 | param.s_feature_incompat |= EXT2_FEATURE_INCOMPAT_FILETYPE;
|
---|
830 | param.s_feature_ro_compat |= EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
|
---|
831 | #if 0
|
---|
832 | param.s_feature_compat |= EXT2_FEATURE_COMPAT_DIR_INDEX;
|
---|
833 | #endif
|
---|
834 |
|
---|
835 | #ifdef __linux__
|
---|
836 | linux_version_code = get_linux_version_code();
|
---|
837 | if (linux_version_code && linux_version_code < KERNEL_VERSION(2,2,0)) {
|
---|
838 | param.s_rev_level = 0;
|
---|
839 | param.s_feature_incompat = 0;
|
---|
840 | param.s_feature_compat = 0;
|
---|
841 | param.s_feature_ro_compat = 0;
|
---|
842 | }
|
---|
843 | #endif
|
---|
844 |
|
---|
845 | /* If called as mkfs.ext3, create a journal inode */
|
---|
846 | if (last_char_is(bb_applet_name, '3'))
|
---|
847 | journal_size = -1;
|
---|
848 |
|
---|
849 | while ((c = getopt (argc, argv,
|
---|
850 | "b:cE:f:g:i:jl:m:no:qr:R:s:tvI:J:ST:FL:M:N:O:V")) != EOF) {
|
---|
851 | switch (c) {
|
---|
852 | case 'b':
|
---|
853 | if (safe_strtoi(optarg, &blocksize))
|
---|
854 | goto BLOCKSIZE_ERROR;
|
---|
855 | b = (blocksize > 0) ? blocksize : -blocksize;
|
---|
856 | if (b < EXT2_MIN_BLOCK_SIZE ||
|
---|
857 | b > EXT2_MAX_BLOCK_SIZE) {
|
---|
858 | BLOCKSIZE_ERROR:
|
---|
859 | bb_error_msg_and_die("invalid block size - %s", optarg);
|
---|
860 | }
|
---|
861 | mke2fs_warning_msg((blocksize > 4096),
|
---|
862 | "blocksize %d not usable on most systems",
|
---|
863 | blocksize);
|
---|
864 | if (blocksize > 0)
|
---|
865 | param.s_log_block_size =
|
---|
866 | int_log2(blocksize >>
|
---|
867 | EXT2_MIN_BLOCK_LOG_SIZE);
|
---|
868 | break;
|
---|
869 | case 'c': /* Check for bad blocks */
|
---|
870 | case 't': /* deprecated */
|
---|
871 | cflag++;
|
---|
872 | break;
|
---|
873 | case 'f':
|
---|
874 | if (safe_strtoi(optarg, &size) || size < EXT2_MIN_BLOCK_SIZE || size > EXT2_MAX_BLOCK_SIZE ){
|
---|
875 | bb_error_msg_and_die("invalid fragment size - %s", optarg);
|
---|
876 | }
|
---|
877 | param.s_log_frag_size =
|
---|
878 | int_log2(size >> EXT2_MIN_BLOCK_LOG_SIZE);
|
---|
879 | mke2fs_warning_msg(1, "fragments not supported. Ignoring -f option");
|
---|
880 | break;
|
---|
881 | case 'g':
|
---|
882 | {
|
---|
883 | int foo;
|
---|
884 | if (safe_strtoi(optarg, &foo)) {
|
---|
885 | bb_error_msg_and_die("Illegal number for blocks per group");
|
---|
886 | }
|
---|
887 | param.s_blocks_per_group = foo;
|
---|
888 | }
|
---|
889 | if ((param.s_blocks_per_group % 8) != 0) {
|
---|
890 | bb_error_msg_and_die("blocks per group must be multiple of 8");
|
---|
891 | }
|
---|
892 | break;
|
---|
893 | case 'i':
|
---|
894 | if (safe_strtoi(optarg, &inode_ratio)
|
---|
895 | || inode_ratio < EXT2_MIN_BLOCK_SIZE
|
---|
896 | || inode_ratio > EXT2_MAX_BLOCK_SIZE * 1024) {
|
---|
897 | bb_error_msg_and_die("invalid inode ratio %s (min %d/max %d)",
|
---|
898 | optarg, EXT2_MIN_BLOCK_SIZE,
|
---|
899 | EXT2_MAX_BLOCK_SIZE);
|
---|
900 | }
|
---|
901 | break;
|
---|
902 | case 'J':
|
---|
903 | parse_journal_opts(&journal_device, &journal_flags, &journal_size, optarg);
|
---|
904 | break;
|
---|
905 | case 'j':
|
---|
906 | param.s_feature_compat |=
|
---|
907 | EXT3_FEATURE_COMPAT_HAS_JOURNAL;
|
---|
908 | if (!journal_size)
|
---|
909 | journal_size = -1;
|
---|
910 | break;
|
---|
911 | case 'l':
|
---|
912 | bad_blocks_filename = optarg;
|
---|
913 | break;
|
---|
914 | case 'm':
|
---|
915 | if (safe_strtoi(optarg, &reserved_ratio) || reserved_ratio > 50 ) {
|
---|
916 | bb_error_msg_and_die("invalid reserved blocks percent - %s", optarg);
|
---|
917 | }
|
---|
918 | break;
|
---|
919 | case 'n':
|
---|
920 | noaction++;
|
---|
921 | break;
|
---|
922 | case 'o':
|
---|
923 | creator_os = optarg;
|
---|
924 | break;
|
---|
925 | case 'r':
|
---|
926 | param.s_rev_level = atoi(optarg);
|
---|
927 | if (param.s_rev_level == EXT2_GOOD_OLD_REV) {
|
---|
928 | param.s_feature_incompat = 0;
|
---|
929 | param.s_feature_compat = 0;
|
---|
930 | param.s_feature_ro_compat = 0;
|
---|
931 | }
|
---|
932 | break;
|
---|
933 | case 's': /* deprecated */
|
---|
934 | if (atoi(optarg))
|
---|
935 | param.s_feature_ro_compat |=
|
---|
936 | EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
|
---|
937 | else
|
---|
938 | param.s_feature_ro_compat &=
|
---|
939 | ~EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
|
---|
940 | break;
|
---|
941 | #ifdef EXT2_DYNAMIC_REV
|
---|
942 | case 'I':
|
---|
943 | if (safe_strtoi(optarg, &inode_size)) {
|
---|
944 | bb_error_msg_and_die("invalid inode size - %s", optarg);
|
---|
945 | }
|
---|
946 | break;
|
---|
947 | #endif
|
---|
948 | case 'N':
|
---|
949 | num_inodes = atoi(optarg);
|
---|
950 | break;
|
---|
951 | case 'v':
|
---|
952 | quiet = 0;
|
---|
953 | break;
|
---|
954 | case 'q':
|
---|
955 | quiet = 1;
|
---|
956 | break;
|
---|
957 | case 'F':
|
---|
958 | force = 1;
|
---|
959 | break;
|
---|
960 | case 'L':
|
---|
961 | volume_label = optarg;
|
---|
962 | break;
|
---|
963 | case 'M':
|
---|
964 | mount_dir = optarg;
|
---|
965 | break;
|
---|
966 | case 'O':
|
---|
967 | if (!strcmp(optarg, "none")) {
|
---|
968 | param.s_feature_compat = 0;
|
---|
969 | param.s_feature_incompat = 0;
|
---|
970 | param.s_feature_ro_compat = 0;
|
---|
971 | break;
|
---|
972 | }
|
---|
973 | if (e2p_edit_feature(optarg,
|
---|
974 | ¶m.s_feature_compat,
|
---|
975 | ok_features)) {
|
---|
976 | bb_error_msg_and_die("Invalid filesystem option set: %s", optarg);
|
---|
977 | }
|
---|
978 | break;
|
---|
979 | case 'E':
|
---|
980 | case 'R':
|
---|
981 | extended_opts = optarg;
|
---|
982 | break;
|
---|
983 | case 'S':
|
---|
984 | super_only = 1;
|
---|
985 | break;
|
---|
986 | case 'T':
|
---|
987 | fs_type = optarg;
|
---|
988 | break;
|
---|
989 | case 'V':
|
---|
990 | /* Print version number and exit */
|
---|
991 | show_version_only = 1;
|
---|
992 | quiet = 0;
|
---|
993 | break;
|
---|
994 | default:
|
---|
995 | bb_show_usage();
|
---|
996 | }
|
---|
997 | }
|
---|
998 | if ((optind == argc) /*&& !show_version_only*/)
|
---|
999 | bb_show_usage();
|
---|
1000 | device_name = argv[optind++];
|
---|
1001 |
|
---|
1002 | mke2fs_verbose("mke2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
|
---|
1003 |
|
---|
1004 | if (show_version_only) {
|
---|
1005 | return 0;
|
---|
1006 | }
|
---|
1007 |
|
---|
1008 | /*
|
---|
1009 | * If there's no blocksize specified and there is a journal
|
---|
1010 | * device, use it to figure out the blocksize
|
---|
1011 | */
|
---|
1012 | if (blocksize <= 0 && journal_device) {
|
---|
1013 | ext2_filsys jfs;
|
---|
1014 | io_manager io_ptr;
|
---|
1015 |
|
---|
1016 | #ifdef CONFIG_TESTIO_DEBUG
|
---|
1017 | io_ptr = test_io_manager;
|
---|
1018 | test_io_backing_manager = unix_io_manager;
|
---|
1019 | #else
|
---|
1020 | io_ptr = unix_io_manager;
|
---|
1021 | #endif
|
---|
1022 | retval = ext2fs_open(journal_device,
|
---|
1023 | EXT2_FLAG_JOURNAL_DEV_OK, 0,
|
---|
1024 | 0, io_ptr, &jfs);
|
---|
1025 | mke2fs_error_msg_and_die(retval, "open journal device %s", journal_device);
|
---|
1026 | if ((blocksize < 0) && (jfs->blocksize < (unsigned) (-blocksize))) {
|
---|
1027 | bb_error_msg_and_die(
|
---|
1028 | "Journal dev blocksize (%d) smaller than "
|
---|
1029 | "minimum blocksize %d\n", jfs->blocksize,
|
---|
1030 | -blocksize);
|
---|
1031 | }
|
---|
1032 | blocksize = jfs->blocksize;
|
---|
1033 | param.s_log_block_size =
|
---|
1034 | int_log2(blocksize >> EXT2_MIN_BLOCK_LOG_SIZE);
|
---|
1035 | ext2fs_close(jfs);
|
---|
1036 | }
|
---|
1037 |
|
---|
1038 | if (blocksize > sys_page_size) {
|
---|
1039 | mke2fs_warning_msg(1, "%d-byte blocks too big for system (max %d)",
|
---|
1040 | blocksize, sys_page_size);
|
---|
1041 | if (!force) {
|
---|
1042 | proceed_question();
|
---|
1043 | }
|
---|
1044 | bb_error_msg("Forced to continue");
|
---|
1045 | }
|
---|
1046 | mke2fs_warning_msg(((blocksize > 4096) &&
|
---|
1047 | (param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL)),
|
---|
1048 | "some 2.4 kernels do not support "
|
---|
1049 | "blocksizes greater than 4096 using ext3.\n"
|
---|
1050 | "Use -b 4096 if this is an issue for you\n");
|
---|
1051 |
|
---|
1052 | if (optind < argc) {
|
---|
1053 | param.s_blocks_count = parse_num_blocks(argv[optind++],
|
---|
1054 | param.s_log_block_size);
|
---|
1055 | mke2fs_error_msg_and_die(!param.s_blocks_count, "invalid blocks count - %s", argv[optind - 1]);
|
---|
1056 | }
|
---|
1057 | if (optind < argc)
|
---|
1058 | bb_show_usage();
|
---|
1059 |
|
---|
1060 | if (param.s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
|
---|
1061 | if (!fs_type)
|
---|
1062 | fs_type = "journal";
|
---|
1063 | reserved_ratio = 0;
|
---|
1064 | param.s_feature_incompat = EXT3_FEATURE_INCOMPAT_JOURNAL_DEV;
|
---|
1065 | param.s_feature_compat = 0;
|
---|
1066 | param.s_feature_ro_compat = 0;
|
---|
1067 | }
|
---|
1068 | if (param.s_rev_level == EXT2_GOOD_OLD_REV &&
|
---|
1069 | (param.s_feature_compat || param.s_feature_ro_compat ||
|
---|
1070 | param.s_feature_incompat))
|
---|
1071 | param.s_rev_level = 1; /* Create a revision 1 filesystem */
|
---|
1072 |
|
---|
1073 | check_plausibility(device_name , force);
|
---|
1074 | check_mount(device_name, force, "filesystem");
|
---|
1075 |
|
---|
1076 | param.s_log_frag_size = param.s_log_block_size;
|
---|
1077 |
|
---|
1078 | if (noaction && param.s_blocks_count) {
|
---|
1079 | dev_size = param.s_blocks_count;
|
---|
1080 | retval = 0;
|
---|
1081 | } else {
|
---|
1082 | retry:
|
---|
1083 | retval = ext2fs_get_device_size(device_name,
|
---|
1084 | EXT2_BLOCK_SIZE(¶m),
|
---|
1085 | &dev_size);
|
---|
1086 | if ((retval == EFBIG) &&
|
---|
1087 | (blocksize == 0) &&
|
---|
1088 | (param.s_log_block_size == 0)) {
|
---|
1089 | param.s_log_block_size = 2;
|
---|
1090 | blocksize = 4096;
|
---|
1091 | goto retry;
|
---|
1092 | }
|
---|
1093 | }
|
---|
1094 |
|
---|
1095 | mke2fs_error_msg_and_die((retval && (retval != EXT2_ET_UNIMPLEMENTED)),"determine filesystem size");
|
---|
1096 |
|
---|
1097 | if (!param.s_blocks_count) {
|
---|
1098 | if (retval == EXT2_ET_UNIMPLEMENTED) {
|
---|
1099 | mke2fs_error_msg_and_die(1,
|
---|
1100 | "determine device size; you "
|
---|
1101 | "must specify\nthe size of the "
|
---|
1102 | "filesystem");
|
---|
1103 | } else {
|
---|
1104 | if (dev_size == 0) {
|
---|
1105 | bb_error_msg_and_die(
|
---|
1106 | "Device size reported to be zero. "
|
---|
1107 | "Invalid partition specified, or\n\t"
|
---|
1108 | "partition table wasn't reread "
|
---|
1109 | "after running fdisk, due to\n\t"
|
---|
1110 | "a modified partition being busy "
|
---|
1111 | "and in use. You may need to reboot\n\t"
|
---|
1112 | "to re-read your partition table.\n"
|
---|
1113 | );
|
---|
1114 | }
|
---|
1115 | param.s_blocks_count = dev_size;
|
---|
1116 | if (sys_page_size > EXT2_BLOCK_SIZE(¶m))
|
---|
1117 | param.s_blocks_count &= ~((sys_page_size /
|
---|
1118 | EXT2_BLOCK_SIZE(¶m))-1);
|
---|
1119 | }
|
---|
1120 |
|
---|
1121 | } else if (!force && (param.s_blocks_count > dev_size)) {
|
---|
1122 | bb_error_msg("Filesystem larger than apparent device size");
|
---|
1123 | proceed_question();
|
---|
1124 | }
|
---|
1125 |
|
---|
1126 | /*
|
---|
1127 | * If the user asked for HAS_JOURNAL, then make sure a journal
|
---|
1128 | * gets created.
|
---|
1129 | */
|
---|
1130 | if ((param.s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
|
---|
1131 | !journal_size)
|
---|
1132 | journal_size = -1;
|
---|
1133 |
|
---|
1134 | /* Set first meta blockgroup via an environment variable */
|
---|
1135 | /* (this is mostly for debugging purposes) */
|
---|
1136 | if ((param.s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) &&
|
---|
1137 | ((tmp = getenv("MKE2FS_FIRST_META_BG"))))
|
---|
1138 | param.s_first_meta_bg = atoi(tmp);
|
---|
1139 |
|
---|
1140 | /* Get the hardware sector size, if available */
|
---|
1141 | retval = ext2fs_get_device_sectsize(device_name, §or_size);
|
---|
1142 | mke2fs_error_msg_and_die(retval, "determine hardware sector size");
|
---|
1143 |
|
---|
1144 | if ((tmp = getenv("MKE2FS_DEVICE_SECTSIZE")) != NULL)
|
---|
1145 | sector_size = atoi(tmp);
|
---|
1146 |
|
---|
1147 | set_fs_defaults(fs_type, ¶m, blocksize, sector_size, &inode_ratio);
|
---|
1148 | blocksize = EXT2_BLOCK_SIZE(¶m);
|
---|
1149 |
|
---|
1150 | if (extended_opts)
|
---|
1151 | parse_extended_opts(¶m, extended_opts);
|
---|
1152 |
|
---|
1153 | /* Since sparse_super is the default, we would only have a problem
|
---|
1154 | * here if it was explicitly disabled.
|
---|
1155 | */
|
---|
1156 | if ((param.s_feature_compat & EXT2_FEATURE_COMPAT_RESIZE_INODE) &&
|
---|
1157 | !(param.s_feature_ro_compat&EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
|
---|
1158 | bb_error_msg_and_die("reserved online resize blocks not supported "
|
---|
1159 | "on non-sparse filesystem");
|
---|
1160 | }
|
---|
1161 |
|
---|
1162 | if (param.s_blocks_per_group) {
|
---|
1163 | if (param.s_blocks_per_group < 256 ||
|
---|
1164 | param.s_blocks_per_group > 8 * (unsigned) blocksize) {
|
---|
1165 | bb_error_msg_and_die("blocks per group count out of range");
|
---|
1166 | }
|
---|
1167 | }
|
---|
1168 |
|
---|
1169 | if (!force && param.s_blocks_count >= (1 << 31)) {
|
---|
1170 | bb_error_msg_and_die("Filesystem too large. No more than 2**31-1 blocks\n"
|
---|
1171 | "\t (8TB using a blocksize of 4k) are currently supported.");
|
---|
1172 | }
|
---|
1173 |
|
---|
1174 | if (inode_size) {
|
---|
1175 | if (inode_size < EXT2_GOOD_OLD_INODE_SIZE ||
|
---|
1176 | inode_size > EXT2_BLOCK_SIZE(¶m) ||
|
---|
1177 | inode_size & (inode_size - 1)) {
|
---|
1178 | bb_error_msg_and_die("invalid inode size %d (min %d/max %d)",
|
---|
1179 | inode_size, EXT2_GOOD_OLD_INODE_SIZE,
|
---|
1180 | blocksize);
|
---|
1181 | }
|
---|
1182 | mke2fs_warning_msg((inode_size != EXT2_GOOD_OLD_INODE_SIZE),
|
---|
1183 | "%d-byte inodes not usable on most systems",
|
---|
1184 | inode_size);
|
---|
1185 | param.s_inode_size = inode_size;
|
---|
1186 | }
|
---|
1187 |
|
---|
1188 | /*
|
---|
1189 | * Calculate number of inodes based on the inode ratio
|
---|
1190 | */
|
---|
1191 | param.s_inodes_count = num_inodes ? num_inodes :
|
---|
1192 | ((__u64) param.s_blocks_count * blocksize)
|
---|
1193 | / inode_ratio;
|
---|
1194 |
|
---|
1195 | /*
|
---|
1196 | * Calculate number of blocks to reserve
|
---|
1197 | */
|
---|
1198 | param.s_r_blocks_count = (param.s_blocks_count * reserved_ratio) / 100;
|
---|
1199 | return 1;
|
---|
1200 | }
|
---|
1201 |
|
---|
1202 | static void mke2fs_clean_up(void)
|
---|
1203 | {
|
---|
1204 | if (ENABLE_FEATURE_CLEAN_UP && journal_device) free(journal_device);
|
---|
1205 | }
|
---|
1206 |
|
---|
1207 | int mke2fs_main (int argc, char *argv[])
|
---|
1208 | {
|
---|
1209 | errcode_t retval;
|
---|
1210 | ext2_filsys fs;
|
---|
1211 | badblocks_list bb_list = 0;
|
---|
1212 | unsigned int i;
|
---|
1213 | int val;
|
---|
1214 | io_manager io_ptr;
|
---|
1215 |
|
---|
1216 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
1217 | atexit(mke2fs_clean_up);
|
---|
1218 | if(!PRS(argc, argv))
|
---|
1219 | return 0;
|
---|
1220 |
|
---|
1221 | #ifdef CONFIG_TESTIO_DEBUG
|
---|
1222 | io_ptr = test_io_manager;
|
---|
1223 | test_io_backing_manager = unix_io_manager;
|
---|
1224 | #else
|
---|
1225 | io_ptr = unix_io_manager;
|
---|
1226 | #endif
|
---|
1227 |
|
---|
1228 | /*
|
---|
1229 | * Initialize the superblock....
|
---|
1230 | */
|
---|
1231 | retval = ext2fs_initialize(device_name, 0, ¶m,
|
---|
1232 | io_ptr, &fs);
|
---|
1233 | mke2fs_error_msg_and_die(retval, "set up superblock");
|
---|
1234 |
|
---|
1235 | /*
|
---|
1236 | * Wipe out the old on-disk superblock
|
---|
1237 | */
|
---|
1238 | if (!noaction)
|
---|
1239 | zap_sector(fs, 2, 6);
|
---|
1240 |
|
---|
1241 | /*
|
---|
1242 | * Generate a UUID for it...
|
---|
1243 | */
|
---|
1244 | uuid_generate(fs->super->s_uuid);
|
---|
1245 |
|
---|
1246 | /*
|
---|
1247 | * Initialize the directory index variables
|
---|
1248 | */
|
---|
1249 | fs->super->s_def_hash_version = EXT2_HASH_TEA;
|
---|
1250 | uuid_generate((unsigned char *) fs->super->s_hash_seed);
|
---|
1251 |
|
---|
1252 | /*
|
---|
1253 | * Add "jitter" to the superblock's check interval so that we
|
---|
1254 | * don't check all the filesystems at the same time. We use a
|
---|
1255 | * kludgy hack of using the UUID to derive a random jitter value.
|
---|
1256 | */
|
---|
1257 | for (i = 0, val = 0 ; i < sizeof(fs->super->s_uuid); i++)
|
---|
1258 | val += fs->super->s_uuid[i];
|
---|
1259 | fs->super->s_max_mnt_count += val % EXT2_DFL_MAX_MNT_COUNT;
|
---|
1260 |
|
---|
1261 | /*
|
---|
1262 | * Override the creator OS, if applicable
|
---|
1263 | */
|
---|
1264 | if (creator_os && !set_os(fs->super, creator_os)) {
|
---|
1265 | bb_error_msg_and_die("unknown os - %s", creator_os);
|
---|
1266 | }
|
---|
1267 |
|
---|
1268 | /*
|
---|
1269 | * For the Hurd, we will turn off filetype since it doesn't
|
---|
1270 | * support it.
|
---|
1271 | */
|
---|
1272 | if (fs->super->s_creator_os == EXT2_OS_HURD)
|
---|
1273 | fs->super->s_feature_incompat &=
|
---|
1274 | ~EXT2_FEATURE_INCOMPAT_FILETYPE;
|
---|
1275 |
|
---|
1276 | /*
|
---|
1277 | * Set the volume label...
|
---|
1278 | */
|
---|
1279 | if (volume_label) {
|
---|
1280 | snprintf(fs->super->s_volume_name, sizeof(fs->super->s_volume_name), "%s", volume_label);
|
---|
1281 | }
|
---|
1282 |
|
---|
1283 | /*
|
---|
1284 | * Set the last mount directory
|
---|
1285 | */
|
---|
1286 | if (mount_dir) {
|
---|
1287 | snprintf(fs->super->s_last_mounted, sizeof(fs->super->s_last_mounted), "%s", mount_dir);
|
---|
1288 | }
|
---|
1289 |
|
---|
1290 | if (!quiet || noaction)
|
---|
1291 | show_stats(fs);
|
---|
1292 |
|
---|
1293 | if (noaction)
|
---|
1294 | return 0;
|
---|
1295 |
|
---|
1296 | if (fs->super->s_feature_incompat &
|
---|
1297 | EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) {
|
---|
1298 | create_journal_dev(fs);
|
---|
1299 | return (ext2fs_close(fs) ? 1 : 0);
|
---|
1300 | }
|
---|
1301 |
|
---|
1302 | if (bad_blocks_filename)
|
---|
1303 | read_bb_file(fs, &bb_list, bad_blocks_filename);
|
---|
1304 | if (cflag)
|
---|
1305 | test_disk(fs, &bb_list);
|
---|
1306 |
|
---|
1307 | handle_bad_blocks(fs, bb_list);
|
---|
1308 | fs->stride = fs_stride;
|
---|
1309 | retval = ext2fs_allocate_tables(fs);
|
---|
1310 | mke2fs_error_msg_and_die(retval, "allocate filesystem tables");
|
---|
1311 | if (super_only) {
|
---|
1312 | fs->super->s_state |= EXT2_ERROR_FS;
|
---|
1313 | fs->flags &= ~(EXT2_FLAG_IB_DIRTY|EXT2_FLAG_BB_DIRTY);
|
---|
1314 | } else {
|
---|
1315 | /* rsv must be a power of two (64kB is MD RAID sb alignment) */
|
---|
1316 | unsigned int rsv = 65536 / fs->blocksize;
|
---|
1317 | unsigned long blocks = fs->super->s_blocks_count;
|
---|
1318 | unsigned long start;
|
---|
1319 | blk_t ret_blk;
|
---|
1320 |
|
---|
1321 | #ifdef ZAP_BOOTBLOCK
|
---|
1322 | zap_sector(fs, 0, 2);
|
---|
1323 | #endif
|
---|
1324 |
|
---|
1325 | /*
|
---|
1326 | * Wipe out any old MD RAID (or other) metadata at the end
|
---|
1327 | * of the device. This will also verify that the device is
|
---|
1328 | * as large as we think. Be careful with very small devices.
|
---|
1329 | */
|
---|
1330 | start = (blocks & ~(rsv - 1));
|
---|
1331 | if (start > rsv)
|
---|
1332 | start -= rsv;
|
---|
1333 | if (start > 0)
|
---|
1334 | retval = zero_blocks(fs, start, blocks - start,
|
---|
1335 | NULL, &ret_blk, NULL);
|
---|
1336 |
|
---|
1337 | mke2fs_warning_msg(retval, "could not zero block %u at end of filesystem", ret_blk);
|
---|
1338 | write_inode_tables(fs);
|
---|
1339 | create_root_dir(fs);
|
---|
1340 | create_lost_and_found(fs);
|
---|
1341 | reserve_inodes(fs);
|
---|
1342 | create_bad_block_inode(fs, bb_list);
|
---|
1343 | if (fs->super->s_feature_compat &
|
---|
1344 | EXT2_FEATURE_COMPAT_RESIZE_INODE) {
|
---|
1345 | retval = ext2fs_create_resize_inode(fs);
|
---|
1346 | mke2fs_error_msg_and_die(retval, "reserve blocks for online resize");
|
---|
1347 | }
|
---|
1348 | }
|
---|
1349 |
|
---|
1350 | if (journal_device) {
|
---|
1351 | make_journal_device(journal_device, fs, quiet, force);
|
---|
1352 | } else if (journal_size) {
|
---|
1353 | make_journal_blocks(fs, journal_size, journal_flags, quiet);
|
---|
1354 | }
|
---|
1355 |
|
---|
1356 | mke2fs_verbose("Writing superblocks and filesystem accounting information: ");
|
---|
1357 | retval = ext2fs_flush(fs);
|
---|
1358 | mke2fs_warning_msg(retval, "had trouble writing out superblocks");
|
---|
1359 | mke2fs_verbose_done();
|
---|
1360 | if (!quiet && !getenv("MKE2FS_SKIP_CHECK_MSG"))
|
---|
1361 | print_check_message(fs);
|
---|
1362 | val = ext2fs_close(fs);
|
---|
1363 | return (retval || val) ? 1 : 0;
|
---|
1364 | }
|
---|