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Commit | Line | Data |
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24b2c7a7 TT |
1 | /* |
2 | * main.c --- ext2 resizer main program | |
3 | * | |
0cee8a5c TT |
4 | * Copyright (C) 1997, 1998 by Theodore Ts'o and |
5 | * PowerQuest, Inc. | |
6 | * | |
55f4cbd9 | 7 | * Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004 by Theodore Ts'o |
efc6f628 | 8 | * |
24b2c7a7 | 9 | * %Begin-Header% |
0cee8a5c TT |
10 | * This file may be redistributed under the terms of the GNU Public |
11 | * License. | |
24b2c7a7 TT |
12 | * %End-Header% |
13 | */ | |
14 | ||
fe07357f TT |
15 | #define _LARGEFILE_SOURCE |
16 | #define _LARGEFILE64_SOURCE | |
17 | ||
d1154eb4 | 18 | #include "config.h" |
c762c8e6 TT |
19 | #ifdef HAVE_GETOPT_H |
20 | #include <getopt.h> | |
373b8337 TT |
21 | #else |
22 | extern char *optarg; | |
23 | extern int optind; | |
c762c8e6 | 24 | #endif |
fe07357f | 25 | #include <unistd.h> |
f38cf3cb TT |
26 | #ifdef HAVE_STDLIB_H |
27 | #include <stdlib.h> | |
28 | #endif | |
fe07357f | 29 | #include <sys/types.h> |
116db1b5 | 30 | #include <sys/stat.h> |
fe07357f | 31 | #include <fcntl.h> |
c762c8e6 | 32 | |
55f4cbd9 TT |
33 | #include "e2p/e2p.h" |
34 | ||
24b2c7a7 TT |
35 | #include "resize2fs.h" |
36 | ||
0cee8a5c | 37 | #include "../version.h" |
2e561e02 | 38 | |
f404167d TT |
39 | char *program_name; |
40 | static char *device_name, *io_options; | |
24b2c7a7 | 41 | |
dfcdc32f | 42 | static void usage (char *prog) |
24b2c7a7 | 43 | { |
199ddaaa JB |
44 | fprintf (stderr, _("Usage: %s [-d debug_flags] [-f] [-F] [-M] [-P] " |
45 | "[-p] device [new_size]\n\n"), prog); | |
2e561e02 | 46 | |
24b2c7a7 TT |
47 | exit (1); |
48 | } | |
49 | ||
3b627e8d TT |
50 | static errcode_t resize_progress_func(ext2_resize_t rfs, int pass, |
51 | unsigned long cur, unsigned long max) | |
63b44fbe TT |
52 | { |
53 | ext2_sim_progmeter progress; | |
54 | const char *label; | |
55 | errcode_t retval; | |
56 | ||
57 | progress = (ext2_sim_progmeter) rfs->prog_data; | |
f4b2a6db | 58 | if (max == 0) |
3b627e8d | 59 | return 0; |
63b44fbe TT |
60 | if (cur == 0) { |
61 | if (progress) | |
62 | ext2fs_progress_close(progress); | |
63 | progress = 0; | |
64 | switch (pass) { | |
a8519a2d | 65 | case E2_RSZ_EXTEND_ITABLE_PASS: |
a13575f4 | 66 | label = _("Extending the inode table"); |
63b44fbe TT |
67 | break; |
68 | case E2_RSZ_BLOCK_RELOC_PASS: | |
a13575f4 | 69 | label = _("Relocating blocks"); |
63b44fbe | 70 | break; |
a8519a2d | 71 | case E2_RSZ_INODE_SCAN_PASS: |
a13575f4 | 72 | label = _("Scanning inode table"); |
63b44fbe TT |
73 | break; |
74 | case E2_RSZ_INODE_REF_UPD_PASS: | |
a13575f4 | 75 | label = _("Updating inode references"); |
63b44fbe TT |
76 | break; |
77 | case E2_RSZ_MOVE_ITABLE_PASS: | |
a13575f4 | 78 | label = _("Moving inode table"); |
63b44fbe | 79 | break; |
a8519a2d | 80 | default: |
a13575f4 | 81 | label = _("Unknown pass?!?"); |
a8519a2d | 82 | break; |
63b44fbe | 83 | } |
a13575f4 | 84 | printf(_("Begin pass %d (max = %lu)\n"), pass, max); |
63b44fbe TT |
85 | retval = ext2fs_progress_init(&progress, label, 30, |
86 | 40, max, 0); | |
87 | if (retval) | |
88 | progress = 0; | |
89 | rfs->prog_data = (void *) progress; | |
90 | } | |
91 | if (progress) | |
92 | ext2fs_progress_update(progress, cur); | |
93 | if (cur >= max) { | |
94 | if (progress) | |
95 | ext2fs_progress_close(progress); | |
96 | progress = 0; | |
97 | rfs->prog_data = 0; | |
98 | } | |
3b627e8d | 99 | return 0; |
63b44fbe TT |
100 | } |
101 | ||
46c5490d TT |
102 | static void determine_fs_stride(ext2_filsys fs) |
103 | { | |
104 | unsigned int group; | |
105 | unsigned long long sum; | |
5e27a274 | 106 | unsigned int has_sb, prev_has_sb = 0, num; |
46c5490d TT |
107 | int i_stride, b_stride; |
108 | ||
96c6a3ac TT |
109 | if (fs->stride) |
110 | return; | |
46c5490d TT |
111 | num = 0; sum = 0; |
112 | for (group = 0; group < fs->group_desc_count; group++) { | |
113 | has_sb = ext2fs_bg_has_super(fs, group); | |
114 | if (group == 0 || has_sb != prev_has_sb) | |
115 | goto next; | |
d7cca6b0 VAH |
116 | b_stride = ext2fs_block_bitmap_loc(fs, group) - |
117 | ext2fs_block_bitmap_loc(fs, group - 1) - | |
46c5490d | 118 | fs->super->s_blocks_per_group; |
d7cca6b0 VAH |
119 | i_stride = ext2fs_inode_bitmap_loc(fs, group) - |
120 | ext2fs_inode_bitmap_loc(fs, group - 1) - | |
46c5490d TT |
121 | fs->super->s_blocks_per_group; |
122 | if (b_stride != i_stride || | |
123 | b_stride < 0) | |
124 | goto next; | |
125 | ||
126 | /* printf("group %d has stride %d\n", group, b_stride); */ | |
127 | sum += b_stride; | |
128 | num++; | |
efc6f628 | 129 | |
46c5490d TT |
130 | next: |
131 | prev_has_sb = has_sb; | |
132 | } | |
133 | ||
134 | if (fs->group_desc_count > 12 && num < 3) | |
135 | sum = 0; | |
136 | ||
137 | if (num) | |
138 | fs->stride = sum / num; | |
139 | else | |
140 | fs->stride = 0; | |
141 | ||
96c6a3ac TT |
142 | fs->super->s_raid_stride = fs->stride; |
143 | ext2fs_mark_super_dirty(fs); | |
144 | ||
46c5490d TT |
145 | #if 0 |
146 | if (fs->stride) | |
147 | printf("Using RAID stride of %d\n", fs->stride); | |
148 | #endif | |
149 | } | |
150 | ||
0d89e5ac | 151 | static void bigalloc_check(ext2_filsys fs, int force) |
a713a7fe TT |
152 | { |
153 | if (!force && EXT2_HAS_RO_COMPAT_FEATURE(fs->super, | |
154 | EXT4_FEATURE_RO_COMPAT_BIGALLOC)) { | |
45ff69ff AD |
155 | fprintf(stderr, "%s", _("\nResizing bigalloc file systems has " |
156 | "not been fully tested. Proceed at\n" | |
157 | "your own risk! Use the force option " | |
158 | "if you want to go ahead anyway.\n\n")); | |
a713a7fe TT |
159 | exit(1); |
160 | } | |
161 | } | |
162 | ||
0a617317 | 163 | int main (int argc, char ** argv) |
24b2c7a7 TT |
164 | { |
165 | errcode_t retval; | |
166 | ext2_filsys fs; | |
167 | int c; | |
05e112a1 | 168 | int flags = 0; |
c762c8e6 | 169 | int flush = 0; |
f4b2a6db | 170 | int force = 0; |
5d2ef12f | 171 | int io_flags = 0; |
199ddaaa JB |
172 | int force_min_size = 0; |
173 | int print_min_size = 0; | |
fe07357f | 174 | int fd, ret; |
8728d506 VAH |
175 | blk64_t new_size = 0; |
176 | blk64_t max_size = 0; | |
177 | blk64_t min_size = 0; | |
24b2c7a7 | 178 | io_manager io_ptr; |
55f4cbd9 | 179 | char *new_size_str = 0; |
46c5490d | 180 | int use_stride = -1; |
7270fbe7 | 181 | ext2fs_struct_stat st_buf; |
fe07357f | 182 | __s64 new_file_size; |
54434927 | 183 | unsigned int sys_page_size = 4096; |
a7ccdff8 | 184 | long sysval; |
bf69235a TT |
185 | int len, mount_flags; |
186 | char *mtpt; | |
ddc32a04 TT |
187 | |
188 | #ifdef ENABLE_NLS | |
189 | setlocale(LC_MESSAGES, ""); | |
190 | setlocale(LC_CTYPE, ""); | |
191 | bindtextdomain(NLS_CAT_NAME, LOCALEDIR); | |
192 | textdomain(NLS_CAT_NAME); | |
9d4507c5 | 193 | set_com_err_gettext(gettext); |
ddc32a04 TT |
194 | #endif |
195 | ||
a6d8302b | 196 | add_error_table(&et_ext2_error_table); |
24b2c7a7 | 197 | |
f35fd3d5 | 198 | fprintf (stderr, "resize2fs %s (%s)\n", |
ba0af756 | 199 | E2FSPROGS_VERSION, E2FSPROGS_DATE); |
24b2c7a7 TT |
200 | if (argc && *argv) |
201 | program_name = *argv; | |
2e561e02 | 202 | |
199ddaaa | 203 | while ((c = getopt (argc, argv, "d:fFhMPpS:")) != EOF) { |
24b2c7a7 TT |
204 | switch (c) { |
205 | case 'h': | |
206 | usage(program_name); | |
207 | break; | |
f4b2a6db TT |
208 | case 'f': |
209 | force = 1; | |
210 | break; | |
c762c8e6 TT |
211 | case 'F': |
212 | flush = 1; | |
213 | break; | |
199ddaaa JB |
214 | case 'M': |
215 | force_min_size = 1; | |
216 | break; | |
217 | case 'P': | |
218 | print_min_size = 1; | |
219 | break; | |
05e112a1 TT |
220 | case 'd': |
221 | flags |= atoi(optarg); | |
222 | break; | |
223 | case 'p': | |
224 | flags |= RESIZE_PERCENT_COMPLETE; | |
225 | break; | |
46c5490d TT |
226 | case 'S': |
227 | use_stride = atoi(optarg); | |
228 | break; | |
24b2c7a7 | 229 | default: |
f4b2a6db | 230 | usage(program_name); |
24b2c7a7 TT |
231 | } |
232 | } | |
f4b2a6db TT |
233 | if (optind == argc) |
234 | usage(program_name); | |
2e561e02 | 235 | |
24b2c7a7 | 236 | device_name = argv[optind++]; |
55f4cbd9 TT |
237 | if (optind < argc) |
238 | new_size_str = argv[optind++]; | |
f4b2a6db TT |
239 | if (optind < argc) |
240 | usage(program_name); | |
efc6f628 | 241 | |
2e8ca9a2 TT |
242 | io_options = strchr(device_name, '?'); |
243 | if (io_options) | |
244 | *io_options++ = 0; | |
245 | ||
bf69235a TT |
246 | /* |
247 | * Figure out whether or not the device is mounted, and if it is | |
248 | * where it is mounted. | |
249 | */ | |
250 | len=80; | |
251 | while (1) { | |
252 | mtpt = malloc(len); | |
253 | if (!mtpt) | |
254 | return ENOMEM; | |
255 | mtpt[len-1] = 0; | |
efc6f628 | 256 | retval = ext2fs_check_mount_point(device_name, &mount_flags, |
bf69235a TT |
257 | mtpt, len); |
258 | if (retval) { | |
259 | com_err("ext2fs_check_mount_point", retval, | |
260 | _("while determining whether %s is mounted."), | |
261 | device_name); | |
262 | exit(1); | |
263 | } | |
3a4d9869 | 264 | if (!(mount_flags & EXT2_MF_MOUNTED) || (mtpt[len-1] == 0)) |
bf69235a TT |
265 | break; |
266 | free(mtpt); | |
267 | len = 2 * len; | |
268 | } | |
fe07357f | 269 | |
c4012e5a | 270 | fd = ext2fs_open_file(device_name, O_RDWR, 0); |
fe07357f TT |
271 | if (fd < 0) { |
272 | com_err("open", errno, _("while opening %s"), | |
273 | device_name); | |
274 | exit(1); | |
275 | } | |
276 | ||
7270fbe7 | 277 | ret = ext2fs_fstat(fd, &st_buf); |
fe07357f | 278 | if (ret < 0) { |
efc6f628 | 279 | com_err("open", errno, |
fe07357f TT |
280 | _("while getting stat information for %s"), |
281 | device_name); | |
282 | exit(1); | |
283 | } | |
efc6f628 | 284 | |
c762c8e6 | 285 | if (flush) { |
48e08e03 TT |
286 | retval = ext2fs_sync_device(fd, 1); |
287 | if (retval) { | |
efc6f628 | 288 | com_err(argv[0], retval, |
a13575f4 | 289 | _("while trying to flush %s"), |
c762c8e6 TT |
290 | device_name); |
291 | exit(1); | |
292 | } | |
fe07357f TT |
293 | } |
294 | ||
295 | if (!S_ISREG(st_buf.st_mode )) { | |
c762c8e6 | 296 | close(fd); |
fe07357f | 297 | fd = -1; |
c762c8e6 TT |
298 | } |
299 | ||
f38cf3cb TT |
300 | #ifdef CONFIG_TESTIO_DEBUG |
301 | if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) { | |
05e112a1 TT |
302 | io_ptr = test_io_manager; |
303 | test_io_backing_manager = unix_io_manager; | |
efc6f628 | 304 | } else |
f38cf3cb | 305 | #endif |
05e112a1 TT |
306 | io_ptr = unix_io_manager; |
307 | ||
5d2ef12f TT |
308 | if (!(mount_flags & EXT2_MF_MOUNTED)) |
309 | io_flags = EXT2_FLAG_RW | EXT2_FLAG_EXCLUSIVE; | |
04cb6f58 SL |
310 | |
311 | io_flags |= EXT2_FLAG_64BITS; | |
312 | ||
efc6f628 | 313 | retval = ext2fs_open2(device_name, io_options, io_flags, |
2e8ca9a2 | 314 | 0, 0, io_ptr, &fs); |
24b2c7a7 | 315 | if (retval) { |
45ff69ff AD |
316 | com_err(program_name, retval, _("while trying to open %s"), |
317 | device_name); | |
318 | printf("%s", _("Couldn't find valid filesystem superblock.\n")); | |
24b2c7a7 TT |
319 | exit (1); |
320 | } | |
236efede | 321 | |
7d7a8fe4 ES |
322 | if (!(mount_flags & EXT2_MF_MOUNTED)) { |
323 | if (!force && ((fs->super->s_lastcheck < fs->super->s_mtime) || | |
324 | (fs->super->s_state & EXT2_ERROR_FS) || | |
325 | ((fs->super->s_state & EXT2_VALID_FS) == 0))) { | |
326 | fprintf(stderr, | |
327 | _("Please run 'e2fsck -f %s' first.\n\n"), | |
328 | device_name); | |
329 | exit(1); | |
330 | } | |
331 | } | |
332 | ||
101c84f2 TT |
333 | /* |
334 | * Check for compatibility with the feature sets. We need to | |
335 | * be more stringent than ext2fs_open(). | |
336 | */ | |
76dd5e5c | 337 | if (fs->super->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP) { |
101c84f2 TT |
338 | com_err(program_name, EXT2_ET_UNSUPP_FEATURE, |
339 | "(%s)", device_name); | |
340 | exit(1); | |
341 | } | |
a8d632a4 | 342 | |
e231f175 | 343 | min_size = calculate_minimum_resize_size(fs, flags); |
0d04d88a | 344 | |
199ddaaa | 345 | if (print_min_size) { |
8728d506 | 346 | printf(_("Estimated minimum size of the filesystem: %llu\n"), |
0d04d88a | 347 | min_size); |
199ddaaa JB |
348 | exit(0); |
349 | } | |
350 | ||
a7ccdff8 TT |
351 | /* Determine the system page size if possible */ |
352 | #ifdef HAVE_SYSCONF | |
353 | #if (!defined(_SC_PAGESIZE) && defined(_SC_PAGE_SIZE)) | |
354 | #define _SC_PAGESIZE _SC_PAGE_SIZE | |
355 | #endif | |
356 | #ifdef _SC_PAGESIZE | |
357 | sysval = sysconf(_SC_PAGESIZE); | |
358 | if (sysval > 0) | |
359 | sys_page_size = sysval; | |
360 | #endif /* _SC_PAGESIZE */ | |
361 | #endif /* HAVE_SYSCONF */ | |
362 | ||
f4b2a6db TT |
363 | /* |
364 | * Get the size of the containing partition, and use this for | |
fe07357f | 365 | * defaults and for making sure the new filesystem doesn't |
f4b2a6db TT |
366 | * exceed the partition size. |
367 | */ | |
8728d506 VAH |
368 | retval = ext2fs_get_device_size2(device_name, fs->blocksize, |
369 | &max_size); | |
f4b2a6db | 370 | if (retval) { |
45ff69ff | 371 | com_err(program_name, retval, "%s", |
a13575f4 | 372 | _("while trying to determine filesystem size")); |
f4b2a6db TT |
373 | exit(1); |
374 | } | |
199ddaaa | 375 | if (force_min_size) |
1d8af189 | 376 | new_size = min_size; |
199ddaaa | 377 | else if (new_size_str) { |
8728d506 VAH |
378 | new_size = parse_num_blocks2(new_size_str, |
379 | fs->super->s_log_block_size); | |
279a000f ES |
380 | if (new_size == 0) { |
381 | com_err(program_name, 0, | |
382 | _("Invalid new size: %s\n"), new_size_str); | |
383 | exit(1); | |
384 | } | |
55f4cbd9 | 385 | } else { |
f4b2a6db | 386 | new_size = max_size; |
a7ccdff8 TT |
387 | /* Round down to an even multiple of a pagesize */ |
388 | if (sys_page_size > fs->blocksize) | |
389 | new_size &= ~((sys_page_size / fs->blocksize)-1); | |
390 | } | |
ea38e503 TT |
391 | if (!EXT2_HAS_INCOMPAT_FEATURE(fs->super, |
392 | EXT4_FEATURE_INCOMPAT_64BIT)) { | |
393 | /* Take 16T down to 2^32-1 blocks */ | |
394 | if (new_size == (1ULL << 32)) | |
395 | new_size--; | |
396 | else if (new_size > (1ULL << 32)) { | |
45ff69ff | 397 | com_err(program_name, 0, "%s", |
ea38e503 TT |
398 | _("New size too large to be " |
399 | "expressed in 32 bits\n")); | |
400 | exit(1); | |
401 | } | |
402 | } | |
46c5490d | 403 | |
0d04d88a ES |
404 | if (!force && new_size < min_size) { |
405 | com_err(program_name, 0, | |
8728d506 | 406 | _("New size smaller than minimum (%llu)\n"), min_size); |
0d04d88a ES |
407 | exit(1); |
408 | } | |
46c5490d | 409 | if (use_stride >= 0) { |
de8f3a76 | 410 | if (use_stride >= (int) fs->super->s_blocks_per_group) { |
45ff69ff | 411 | com_err(program_name, 0, "%s", |
46c5490d TT |
412 | _("Invalid stride length")); |
413 | exit(1); | |
414 | } | |
96c6a3ac TT |
415 | fs->stride = fs->super->s_raid_stride = use_stride; |
416 | ext2fs_mark_super_dirty(fs); | |
46c5490d TT |
417 | } else |
418 | determine_fs_stride(fs); | |
efc6f628 | 419 | |
116db1b5 TT |
420 | /* |
421 | * If we are resizing a plain file, and it's not big enough, | |
422 | * automatically extend it in a sparse fashion by writing the | |
423 | * last requested block. | |
424 | */ | |
fe07357f | 425 | new_file_size = ((__u64) new_size) * fs->blocksize; |
efc6f628 | 426 | if ((__u64) new_file_size > |
fe07357f TT |
427 | (((__u64) 1) << (sizeof(st_buf.st_size)*8 - 1)) - 1) |
428 | fd = -1; | |
429 | if ((new_file_size > st_buf.st_size) && | |
430 | (fd > 0)) { | |
431 | if ((ext2fs_llseek(fd, new_file_size-1, SEEK_SET) >= 0) && | |
432 | (write(fd, "0", 1) == 1)) | |
116db1b5 | 433 | max_size = new_size; |
116db1b5 | 434 | } |
f4b2a6db | 435 | if (!force && (new_size > max_size)) { |
a13575f4 | 436 | fprintf(stderr, _("The containing partition (or device)" |
8728d506 VAH |
437 | " is only %llu (%dk) blocks.\nYou requested a new size" |
438 | " of %llu blocks.\n\n"), max_size, | |
792a0881 | 439 | fs->blocksize / 1024, new_size); |
f4b2a6db TT |
440 | exit(1); |
441 | } | |
4efbac6f | 442 | if (new_size == ext2fs_blocks_count(fs->super)) { |
8728d506 | 443 | fprintf(stderr, _("The filesystem is already %llu blocks " |
a13575f4 | 444 | "long. Nothing to do!\n\n"), new_size); |
f4b2a6db TT |
445 | exit(0); |
446 | } | |
bf69235a | 447 | if (mount_flags & EXT2_MF_MOUNTED) { |
a713a7fe | 448 | bigalloc_check(fs, force); |
bf69235a TT |
449 | retval = online_resize_fs(fs, mtpt, &new_size, flags); |
450 | } else { | |
a713a7fe | 451 | bigalloc_check(fs, force); |
96cdb37e | 452 | printf(_("Resizing the filesystem on " |
8728d506 | 453 | "%s to %llu (%dk) blocks.\n"), |
bf69235a TT |
454 | device_name, new_size, fs->blocksize / 1024); |
455 | retval = resize_fs(fs, &new_size, flags, | |
456 | ((flags & RESIZE_PERCENT_COMPLETE) ? | |
457 | resize_progress_func : 0)); | |
f4b2a6db | 458 | } |
3a4d9869 | 459 | free(mtpt); |
1e1da29f | 460 | if (retval) { |
a13575f4 | 461 | com_err(program_name, retval, _("while trying to resize %s"), |
1e1da29f | 462 | device_name); |
96cdb37e TT |
463 | fprintf(stderr, |
464 | _("Please run 'e2fsck -fy %s' to fix the filesystem\n" | |
465 | "after the aborted resize operation.\n"), | |
466 | device_name); | |
47fee2ef | 467 | ext2fs_close_free(&fs); |
16082112 | 468 | exit(1); |
1e1da29f | 469 | } |
8728d506 | 470 | printf(_("The filesystem on %s is now %llu blocks long.\n\n"), |
7e71e4c5 | 471 | device_name, new_size); |
fe07357f TT |
472 | |
473 | if ((st_buf.st_size > new_file_size) && | |
474 | (fd > 0)) { | |
261cd396 | 475 | #ifdef HAVE_FTRUNCATE64 |
fb72556a | 476 | retval = ftruncate64(fd, new_file_size); |
fe07357f | 477 | #else |
fb72556a | 478 | retval = 0; |
98dca6c5 TT |
479 | /* Only truncate if new_file_size doesn't overflow off_t */ |
480 | if (((off_t) new_file_size) == new_file_size) | |
fb72556a | 481 | retval = ftruncate(fd, (off_t) new_file_size); |
fe07357f | 482 | #endif |
fb72556a TT |
483 | if (retval) |
484 | com_err(program_name, retval, | |
485 | _("while trying to truncate %s"), | |
486 | device_name); | |
fe07357f TT |
487 | } |
488 | if (fd > 0) | |
489 | close(fd); | |
a6d8302b | 490 | remove_error_table(&et_ext2_error_table); |
0a617317 | 491 | return (0); |
24b2c7a7 | 492 | } |