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Commit | Line | Data |
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3839e657 TT |
1 | /* |
2 | * util.c --- miscellaneous utilities | |
efc6f628 | 3 | * |
21c84b71 TT |
4 | * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o. |
5 | * | |
6 | * %Begin-Header% | |
7 | * This file may be redistributed under the terms of the GNU Public | |
8 | * License. | |
9 | * %End-Header% | |
3839e657 TT |
10 | */ |
11 | ||
d1154eb4 | 12 | #include "config.h" |
3839e657 | 13 | #include <stdlib.h> |
80875db5 | 14 | #include <stdio.h> |
3839e657 TT |
15 | #include <unistd.h> |
16 | #include <string.h> | |
17 | #include <ctype.h> | |
80875db5 TT |
18 | #ifdef __linux__ |
19 | #include <sys/utsname.h> | |
20 | #endif | |
9ecd8bec TT |
21 | |
22 | #ifdef HAVE_CONIO_H | |
23 | #undef HAVE_TERMIOS_H | |
24 | #include <conio.h> | |
e6597048 | 25 | #define read_a_char() getch() |
9ecd8bec TT |
26 | #else |
27 | #ifdef HAVE_TERMIOS_H | |
3839e657 | 28 | #include <termios.h> |
9ecd8bec TT |
29 | #endif |
30 | #endif | |
31 | ||
4a9f5936 TT |
32 | #ifdef HAVE_MALLOC_H |
33 | #include <malloc.h> | |
34 | #endif | |
3839e657 | 35 | |
49a7360b JS |
36 | #ifdef HAVE_ERRNO_H |
37 | #include <errno.h> | |
38 | #endif | |
39 | ||
3839e657 TT |
40 | #include "e2fsck.h" |
41 | ||
aa75eccc | 42 | extern e2fsck_t e2fsck_global_ctx; /* Try your very best not to use this! */ |
542867fb | 43 | |
b0e91c89 | 44 | #include <stdarg.h> |
0f5eba75 | 45 | #include <time.h> |
50e1e10f TT |
46 | #include <sys/time.h> |
47 | #include <sys/resource.h> | |
48 | ||
f8188fff | 49 | void fatal_error(e2fsck_t ctx, const char *msg) |
3839e657 | 50 | { |
13dcce8b ES |
51 | ext2_filsys fs = ctx->fs; |
52 | int exit_value = FSCK_ERROR; | |
53 | ||
efc6f628 | 54 | if (msg) |
1b6bf175 | 55 | fprintf (stderr, "e2fsck: %s\n", msg); |
13dcce8b ES |
56 | if (!fs) |
57 | goto out; | |
7ff040f3 | 58 | if (fs->io && fs->super) { |
0f5eba75 | 59 | ext2fs_mmp_stop(ctx->fs); |
e39ac922 | 60 | if (ctx->fs->io->magic == EXT2_ET_MAGIC_IO_CHANNEL) |
58a75177 TT |
61 | io_channel_flush(ctx->fs->io); |
62 | else | |
b0e91c89 | 63 | log_err(ctx, "e2fsck: io manager magic bad!\n"); |
58a75177 | 64 | } |
13dcce8b ES |
65 | if (ext2fs_test_changed(fs)) { |
66 | exit_value |= FSCK_NONDESTRUCT; | |
b0e91c89 | 67 | log_out(ctx, _("\n%s: ***** FILE SYSTEM WAS MODIFIED *****\n"), |
13dcce8b ES |
68 | ctx->device_name); |
69 | if (ctx->mount_flags & EXT2_MF_ISROOT) | |
70 | exit_value |= FSCK_REBOOT; | |
71 | } | |
72 | if (!ext2fs_test_valid(fs)) { | |
b0e91c89 TT |
73 | log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has " |
74 | "errors **********\n\n"), ctx->device_name); | |
13dcce8b ES |
75 | exit_value |= FSCK_UNCORRECTED; |
76 | exit_value &= ~FSCK_NONDESTRUCT; | |
77 | } | |
78 | out: | |
f8188fff TT |
79 | ctx->flags |= E2F_FLAG_ABORT; |
80 | if (ctx->flags & E2F_FLAG_SETJMP_OK) | |
81 | longjmp(ctx->abort_loc, 1); | |
13dcce8b | 82 | exit(exit_value); |
3839e657 TT |
83 | } |
84 | ||
b0e91c89 TT |
85 | void log_out(e2fsck_t ctx, const char *fmt, ...) |
86 | { | |
87 | va_list pvar; | |
88 | ||
89 | va_start(pvar, fmt); | |
90 | vprintf(fmt, pvar); | |
91 | va_end(pvar); | |
92 | if (ctx->logf) { | |
93 | va_start(pvar, fmt); | |
94 | vfprintf(ctx->logf, fmt, pvar); | |
95 | va_end(pvar); | |
96 | } | |
97 | } | |
98 | ||
99 | void log_err(e2fsck_t ctx, const char *fmt, ...) | |
100 | { | |
101 | va_list pvar; | |
102 | ||
103 | va_start(pvar, fmt); | |
104 | vfprintf(stderr, fmt, pvar); | |
105 | va_end(pvar); | |
106 | if (ctx->logf) { | |
107 | va_start(pvar, fmt); | |
108 | vfprintf(ctx->logf, fmt, pvar); | |
109 | va_end(pvar); | |
110 | } | |
111 | } | |
112 | ||
f8188fff TT |
113 | void *e2fsck_allocate_memory(e2fsck_t ctx, unsigned int size, |
114 | const char *description) | |
3839e657 TT |
115 | { |
116 | void *ret; | |
117 | char buf[256]; | |
118 | ||
119 | #ifdef DEBUG_ALLOCATE_MEMORY | |
611378fe | 120 | printf("Allocating %u bytes for %s...\n", size, description); |
3839e657 TT |
121 | #endif |
122 | ret = malloc(size); | |
123 | if (!ret) { | |
bf50beb9 ES |
124 | sprintf(buf, "Can't allocate %u bytes for %s\n", |
125 | size, description); | |
f8188fff | 126 | fatal_error(ctx, buf); |
3839e657 TT |
127 | } |
128 | memset(ret, 0, size); | |
129 | return ret; | |
130 | } | |
131 | ||
efc6f628 | 132 | char *string_copy(e2fsck_t ctx EXT2FS_ATTR((unused)), |
54434927 | 133 | const char *str, int len) |
f364093b TT |
134 | { |
135 | char *ret; | |
efc6f628 | 136 | |
f364093b TT |
137 | if (!str) |
138 | return NULL; | |
139 | if (!len) | |
140 | len = strlen(str); | |
141 | ret = malloc(len+1); | |
142 | if (ret) { | |
143 | strncpy(ret, str, len); | |
144 | ret[len] = 0; | |
145 | } | |
146 | return ret; | |
147 | } | |
148 | ||
149 | #ifndef HAVE_STRNLEN | |
150 | /* | |
151 | * Incredibly, libc5 doesn't appear to have strnlen. So we have to | |
152 | * provide our own. | |
153 | */ | |
154 | int e2fsck_strnlen(const char * s, int count) | |
155 | { | |
156 | const char *cp = s; | |
157 | ||
158 | while (count-- && *cp) | |
159 | cp++; | |
160 | return cp - s; | |
161 | } | |
162 | #endif | |
163 | ||
542867fb | 164 | #ifndef HAVE_CONIO_H |
3e699064 | 165 | static int read_a_char(void) |
542867fb TT |
166 | { |
167 | char c; | |
168 | int r; | |
169 | int fail = 0; | |
170 | ||
171 | while(1) { | |
172 | if (e2fsck_global_ctx && | |
173 | (e2fsck_global_ctx->flags & E2F_FLAG_CANCEL)) { | |
174 | return 3; | |
175 | } | |
176 | r = read(0, &c, 1); | |
177 | if (r == 1) | |
178 | return c; | |
179 | if (fail++ > 100) | |
180 | break; | |
181 | } | |
182 | return EOF; | |
183 | } | |
184 | #endif | |
185 | ||
b0e91c89 | 186 | int ask_yn(e2fsck_t ctx, const char * string, int def) |
3839e657 TT |
187 | { |
188 | int c; | |
3839e657 | 189 | const char *defstr; |
53ef44c4 TT |
190 | const char *short_yes = _("yY"); |
191 | const char *short_no = _("nN"); | |
3839e657 | 192 | |
9ecd8bec TT |
193 | #ifdef HAVE_TERMIOS_H |
194 | struct termios termios, tmp; | |
195 | ||
3839e657 TT |
196 | tcgetattr (0, &termios); |
197 | tmp = termios; | |
198 | tmp.c_lflag &= ~(ICANON | ECHO); | |
50e1e10f TT |
199 | tmp.c_cc[VMIN] = 1; |
200 | tmp.c_cc[VTIME] = 0; | |
3839e657 | 201 | tcsetattr (0, TCSANOW, &tmp); |
9ecd8bec | 202 | #endif |
3839e657 TT |
203 | |
204 | if (def == 1) | |
542867fb | 205 | defstr = _(_("<y>")); |
3839e657 | 206 | else if (def == 0) |
542867fb | 207 | defstr = _(_("<n>")); |
3839e657 | 208 | else |
0c4a0726 | 209 | defstr = _(" (y/n)"); |
b0e91c89 | 210 | log_out(ctx, "%s%s? ", string, defstr); |
3839e657 TT |
211 | while (1) { |
212 | fflush (stdout); | |
e6597048 | 213 | if ((c = read_a_char()) == EOF) |
3839e657 | 214 | break; |
542867fb TT |
215 | if (c == 3) { |
216 | #ifdef HAVE_TERMIOS_H | |
217 | tcsetattr (0, TCSANOW, &termios); | |
218 | #endif | |
b0e91c89 TT |
219 | if (ctx->flags & E2F_FLAG_SETJMP_OK) { |
220 | log_out(ctx, "\n"); | |
542867fb TT |
221 | longjmp(e2fsck_global_ctx->abort_loc, 1); |
222 | } | |
b0e91c89 | 223 | log_out(ctx, _("cancelled!\n")); |
542867fb TT |
224 | return 0; |
225 | } | |
0c4a0726 | 226 | if (strchr(short_yes, (char) c)) { |
3839e657 TT |
227 | def = 1; |
228 | break; | |
229 | } | |
0c4a0726 | 230 | else if (strchr(short_no, (char) c)) { |
3839e657 TT |
231 | def = 0; |
232 | break; | |
233 | } | |
1760d167 | 234 | else if ((c == 27 || c == ' ' || c == '\n') && (def != -1)) |
3839e657 TT |
235 | break; |
236 | } | |
237 | if (def) | |
b0e91c89 | 238 | log_out(ctx, _("yes\n")); |
3839e657 | 239 | else |
b0e91c89 | 240 | log_out(ctx, _("no\n")); |
9ecd8bec | 241 | #ifdef HAVE_TERMIOS_H |
3839e657 | 242 | tcsetattr (0, TCSANOW, &termios); |
9ecd8bec | 243 | #endif |
3839e657 TT |
244 | return def; |
245 | } | |
246 | ||
1b6bf175 | 247 | int ask (e2fsck_t ctx, const char * string, int def) |
3839e657 | 248 | { |
1b6bf175 | 249 | if (ctx->options & E2F_OPT_NO) { |
b0e91c89 | 250 | log_out(ctx, _("%s? no\n\n"), string); |
3839e657 TT |
251 | return 0; |
252 | } | |
1b6bf175 | 253 | if (ctx->options & E2F_OPT_YES) { |
b0e91c89 | 254 | log_out(ctx, _("%s? yes\n\n"), string); |
3839e657 TT |
255 | return 1; |
256 | } | |
1b6bf175 | 257 | if (ctx->options & E2F_OPT_PREEN) { |
b0e91c89 | 258 | log_out(ctx, "%s? %s\n\n", string, def ? _("yes") : _("no")); |
3839e657 TT |
259 | return def; |
260 | } | |
b0e91c89 | 261 | return ask_yn(ctx, string, def); |
3839e657 TT |
262 | } |
263 | ||
f8188fff | 264 | void e2fsck_read_bitmaps(e2fsck_t ctx) |
3839e657 | 265 | { |
1b6bf175 | 266 | ext2_filsys fs = ctx->fs; |
3839e657 | 267 | errcode_t retval; |
e94bc631 | 268 | const char *old_op; |
830b44f4 | 269 | unsigned int save_type; |
3839e657 | 270 | |
1b6bf175 TT |
271 | if (ctx->invalid_bitmaps) { |
272 | com_err(ctx->program_name, 0, | |
0c4a0726 | 273 | _("e2fsck_read_bitmaps: illegal bitmap block(s) for %s"), |
1b6bf175 | 274 | ctx->device_name); |
f8188fff | 275 | fatal_error(ctx, 0); |
3839e657 | 276 | } |
f3db3566 | 277 | |
e94bc631 | 278 | old_op = ehandler_operation(_("reading inode and block bitmaps")); |
830b44f4 TT |
279 | e2fsck_set_bitmap_type(fs, EXT2FS_BMAP64_RBTREE, "fs_bitmaps", |
280 | &save_type); | |
f3db3566 | 281 | retval = ext2fs_read_bitmaps(fs); |
830b44f4 | 282 | fs->default_bitmap_type = save_type; |
e94bc631 | 283 | ehandler_operation(old_op); |
f3db3566 | 284 | if (retval) { |
1b6bf175 | 285 | com_err(ctx->program_name, retval, |
0c4a0726 | 286 | _("while retrying to read bitmaps for %s"), |
1b6bf175 | 287 | ctx->device_name); |
f8188fff | 288 | fatal_error(ctx, 0); |
3839e657 TT |
289 | } |
290 | } | |
291 | ||
f8188fff | 292 | void e2fsck_write_bitmaps(e2fsck_t ctx) |
3839e657 | 293 | { |
1b6bf175 | 294 | ext2_filsys fs = ctx->fs; |
3839e657 | 295 | errcode_t retval; |
e94bc631 | 296 | const char *old_op; |
3839e657 | 297 | |
1bb6f6c8 AD |
298 | old_op = ehandler_operation(_("writing block and inode bitmaps")); |
299 | retval = ext2fs_write_bitmaps(fs); | |
300 | ehandler_operation(old_op); | |
301 | if (retval) { | |
302 | com_err(ctx->program_name, retval, | |
303 | _("while rewriting block and inode bitmaps for %s"), | |
304 | ctx->device_name); | |
305 | fatal_error(ctx, 0); | |
3839e657 TT |
306 | } |
307 | } | |
308 | ||
1b6bf175 | 309 | void preenhalt(e2fsck_t ctx) |
3839e657 | 310 | { |
1b6bf175 TT |
311 | ext2_filsys fs = ctx->fs; |
312 | ||
313 | if (!(ctx->options & E2F_OPT_PREEN)) | |
3839e657 | 314 | return; |
b0e91c89 | 315 | log_err(ctx, _("\n\n%s: UNEXPECTED INCONSISTENCY; " |
0c4a0726 | 316 | "RUN fsck MANUALLY.\n\t(i.e., without -a or -p options)\n"), |
1b6bf175 | 317 | ctx->device_name); |
79cc3362 | 318 | ctx->flags |= E2F_FLAG_EXITING; |
50e1e10f TT |
319 | if (fs != NULL) { |
320 | fs->super->s_state |= EXT2_ERROR_FS; | |
321 | ext2fs_mark_super_dirty(fs); | |
322 | ext2fs_close(fs); | |
323 | } | |
3839e657 TT |
324 | exit(FSCK_UNCORRECTED); |
325 | } | |
326 | ||
8bf191e8 | 327 | #ifdef RESOURCE_TRACK |
6d96b00d | 328 | void init_resource_track(struct resource_track *track, io_channel channel) |
3839e657 | 329 | { |
50e1e10f | 330 | #ifdef HAVE_GETRUSAGE |
3839e657 | 331 | struct rusage r; |
50e1e10f | 332 | #endif |
6d96b00d | 333 | io_stats io_start = 0; |
efc6f628 | 334 | |
3839e657 TT |
335 | track->brk_start = sbrk(0); |
336 | gettimeofday(&track->time_start, 0); | |
50e1e10f | 337 | #ifdef HAVE_GETRUSAGE |
53ef44c4 TT |
338 | #ifdef sun |
339 | memset(&r, 0, sizeof(struct rusage)); | |
1b6bf175 | 340 | #endif |
3839e657 TT |
341 | getrusage(RUSAGE_SELF, &r); |
342 | track->user_start = r.ru_utime; | |
343 | track->system_start = r.ru_stime; | |
50e1e10f TT |
344 | #else |
345 | track->user_start.tv_sec = track->user_start.tv_usec = 0; | |
346 | track->system_start.tv_sec = track->system_start.tv_usec = 0; | |
347 | #endif | |
6d96b00d TT |
348 | track->bytes_read = 0; |
349 | track->bytes_written = 0; | |
350 | if (channel && channel->manager && channel->manager->get_stats) | |
351 | channel->manager->get_stats(channel, &io_start); | |
352 | if (io_start) { | |
353 | track->bytes_read = io_start->bytes_read; | |
354 | track->bytes_written = io_start->bytes_written; | |
355 | } | |
3839e657 TT |
356 | } |
357 | ||
21c84b71 TT |
358 | #ifdef __GNUC__ |
359 | #define _INLINE_ __inline__ | |
360 | #else | |
361 | #define _INLINE_ | |
362 | #endif | |
363 | ||
364 | static _INLINE_ float timeval_subtract(struct timeval *tv1, | |
365 | struct timeval *tv2) | |
3839e657 TT |
366 | { |
367 | return ((tv1->tv_sec - tv2->tv_sec) + | |
368 | ((float) (tv1->tv_usec - tv2->tv_usec)) / 1000000); | |
369 | } | |
370 | ||
9facd076 KC |
371 | void print_resource_track(e2fsck_t ctx, const char *desc, |
372 | struct resource_track *track, io_channel channel) | |
3839e657 | 373 | { |
50e1e10f | 374 | #ifdef HAVE_GETRUSAGE |
3839e657 | 375 | struct rusage r; |
4a9f5936 TT |
376 | #endif |
377 | #ifdef HAVE_MALLINFO | |
378 | struct mallinfo malloc_info; | |
50e1e10f | 379 | #endif |
3839e657 TT |
380 | struct timeval time_end; |
381 | ||
9facd076 KC |
382 | if ((desc && !(ctx->options & E2F_OPT_TIME2)) || |
383 | (!desc && !(ctx->options & E2F_OPT_TIME))) | |
384 | return; | |
385 | ||
386 | e2fsck_clear_progbar(ctx); | |
3839e657 | 387 | gettimeofday(&time_end, 0); |
1b6bf175 TT |
388 | |
389 | if (desc) | |
b0e91c89 | 390 | log_out(ctx, "%s: ", desc); |
4a9f5936 TT |
391 | |
392 | #ifdef HAVE_MALLINFO | |
70eabde9 | 393 | #define kbytes(x) (((unsigned long)(x) + 1023) / 1024) |
efc6f628 | 394 | |
4a9f5936 | 395 | malloc_info = mallinfo(); |
b0e91c89 TT |
396 | log_out(ctx, _("Memory used: %luk/%luk (%luk/%luk), "), |
397 | kbytes(malloc_info.arena), kbytes(malloc_info.hblkhd), | |
398 | kbytes(malloc_info.uordblks), kbytes(malloc_info.fordblks)); | |
4a9f5936 | 399 | #else |
b0e91c89 TT |
400 | log_out(ctx, _("Memory used: %lu, "), |
401 | (unsigned long) (((char *) sbrk(0)) - | |
402 | ((char *) track->brk_start))); | |
efc6f628 | 403 | #endif |
50e1e10f | 404 | #ifdef HAVE_GETRUSAGE |
3839e657 TT |
405 | getrusage(RUSAGE_SELF, &r); |
406 | ||
b0e91c89 TT |
407 | log_out(ctx, _("time: %5.2f/%5.2f/%5.2f\n"), |
408 | timeval_subtract(&time_end, &track->time_start), | |
409 | timeval_subtract(&r.ru_utime, &track->user_start), | |
410 | timeval_subtract(&r.ru_stime, &track->system_start)); | |
50e1e10f | 411 | #else |
b0e91c89 TT |
412 | log_out(ctx, _("elapsed time: %6.3f\n"), |
413 | timeval_subtract(&time_end, &track->time_start)); | |
50e1e10f | 414 | #endif |
6d96b00d TT |
415 | #define mbytes(x) (((x) + 1048575) / 1048576) |
416 | if (channel && channel->manager && channel->manager->get_stats) { | |
417 | io_stats delta = 0; | |
418 | unsigned long long bytes_read = 0; | |
419 | unsigned long long bytes_written = 0; | |
420 | ||
421 | if (desc) | |
b0e91c89 | 422 | log_out(ctx, "%s: ", desc); |
6d96b00d TT |
423 | |
424 | channel->manager->get_stats(channel, &delta); | |
425 | if (delta) { | |
426 | bytes_read = delta->bytes_read - track->bytes_read; | |
efc6f628 | 427 | bytes_written = delta->bytes_written - |
6d96b00d TT |
428 | track->bytes_written; |
429 | } | |
b0e91c89 TT |
430 | log_out(ctx, "I/O read: %lluMB, write: %lluMB, " |
431 | "rate: %.2fMB/s\n", | |
432 | mbytes(bytes_read), mbytes(bytes_written), | |
433 | (double)mbytes(bytes_read + bytes_written) / | |
434 | timeval_subtract(&time_end, &track->time_start)); | |
6d96b00d | 435 | } |
3839e657 | 436 | } |
8bf191e8 | 437 | #endif /* RESOURCE_TRACK */ |
3839e657 | 438 | |
08b21301 | 439 | void e2fsck_read_inode(e2fsck_t ctx, unsigned long ino, |
f3db3566 TT |
440 | struct ext2_inode * inode, const char *proc) |
441 | { | |
974d57d3 | 442 | errcode_t retval; |
f3db3566 | 443 | |
08b21301 | 444 | retval = ext2fs_read_inode(ctx->fs, ino, inode); |
f3db3566 TT |
445 | if (retval) { |
446 | com_err("ext2fs_read_inode", retval, | |
611378fe | 447 | _("while reading inode %lu in %s"), ino, proc); |
f8188fff | 448 | fatal_error(ctx, 0); |
f3db3566 TT |
449 | } |
450 | } | |
451 | ||
fefaef39 AD |
452 | void e2fsck_read_inode_full(e2fsck_t ctx, unsigned long ino, |
453 | struct ext2_inode *inode, int bufsize, | |
454 | const char *proc) | |
455 | { | |
974d57d3 | 456 | errcode_t retval; |
fefaef39 AD |
457 | |
458 | retval = ext2fs_read_inode_full(ctx->fs, ino, inode, bufsize); | |
459 | if (retval) { | |
460 | com_err("ext2fs_read_inode_full", retval, | |
611378fe | 461 | _("while reading inode %lu in %s"), ino, proc); |
fefaef39 AD |
462 | fatal_error(ctx, 0); |
463 | } | |
464 | } | |
465 | ||
cebe48a1 TT |
466 | extern void e2fsck_write_inode_full(e2fsck_t ctx, unsigned long ino, |
467 | struct ext2_inode * inode, int bufsize, | |
468 | const char *proc) | |
469 | { | |
974d57d3 | 470 | errcode_t retval; |
cebe48a1 TT |
471 | |
472 | retval = ext2fs_write_inode_full(ctx->fs, ino, inode, bufsize); | |
473 | if (retval) { | |
474 | com_err("ext2fs_write_inode", retval, | |
611378fe | 475 | _("while writing inode %lu in %s"), ino, proc); |
cebe48a1 TT |
476 | fatal_error(ctx, 0); |
477 | } | |
478 | } | |
479 | ||
08b21301 | 480 | extern void e2fsck_write_inode(e2fsck_t ctx, unsigned long ino, |
f3db3566 TT |
481 | struct ext2_inode * inode, const char *proc) |
482 | { | |
974d57d3 | 483 | errcode_t retval; |
f3db3566 | 484 | |
08b21301 | 485 | retval = ext2fs_write_inode(ctx->fs, ino, inode); |
f3db3566 TT |
486 | if (retval) { |
487 | com_err("ext2fs_write_inode", retval, | |
611378fe | 488 | _("while writing inode %lu in %s"), ino, proc); |
f8188fff | 489 | fatal_error(ctx, 0); |
f3db3566 TT |
490 | } |
491 | } | |
492 | ||
3839e657 TT |
493 | #ifdef MTRACE |
494 | void mtrace_print(char *mesg) | |
495 | { | |
496 | FILE *malloc_get_mallstream(); | |
497 | FILE *f = malloc_get_mallstream(); | |
498 | ||
499 | if (f) | |
500 | fprintf(f, "============= %s\n", mesg); | |
501 | } | |
502 | #endif | |
503 | ||
4dbfd79d DW |
504 | blk64_t get_backup_sb(e2fsck_t ctx, ext2_filsys fs, const char *name, |
505 | io_manager manager) | |
1b6bf175 | 506 | { |
f1a1761d TT |
507 | struct ext2_super_block *sb; |
508 | io_channel io = NULL; | |
fae9bfaa | 509 | void *buf = NULL; |
f1a1761d | 510 | int blocksize; |
4dbfd79d | 511 | blk64_t superblock, ret_sb = 8193; |
efc6f628 | 512 | |
f1a1761d TT |
513 | if (fs && fs->super) { |
514 | ret_sb = (fs->super->s_blocks_per_group + | |
515 | fs->super->s_first_data_block); | |
516 | if (ctx) { | |
517 | ctx->superblock = ret_sb; | |
518 | ctx->blocksize = fs->blocksize; | |
519 | } | |
520 | return ret_sb; | |
521 | } | |
efc6f628 | 522 | |
f1a1761d TT |
523 | if (ctx) { |
524 | if (ctx->blocksize) { | |
525 | ret_sb = ctx->blocksize * 8; | |
526 | if (ctx->blocksize == 1024) | |
527 | ret_sb++; | |
528 | ctx->superblock = ret_sb; | |
529 | return ret_sb; | |
530 | } | |
531 | ctx->superblock = ret_sb; | |
532 | ctx->blocksize = 1024; | |
533 | } | |
534 | ||
535 | if (!name || !manager) | |
536 | goto cleanup; | |
537 | ||
538 | if (manager->open(name, 0, &io) != 0) | |
539 | goto cleanup; | |
540 | ||
541 | if (ext2fs_get_mem(SUPERBLOCK_SIZE, &buf)) | |
542 | goto cleanup; | |
543 | sb = (struct ext2_super_block *) buf; | |
544 | ||
932a489c AD |
545 | for (blocksize = EXT2_MIN_BLOCK_SIZE; |
546 | blocksize <= EXT2_MAX_BLOCK_SIZE ; blocksize *= 2) { | |
f1a1761d TT |
547 | superblock = blocksize*8; |
548 | if (blocksize == 1024) | |
549 | superblock++; | |
550 | io_channel_set_blksize(io, blocksize); | |
24a117ab | 551 | if (io_channel_read_blk64(io, superblock, |
f1a1761d TT |
552 | -SUPERBLOCK_SIZE, buf)) |
553 | continue; | |
2eae0930 | 554 | #ifdef WORDS_BIGENDIAN |
f1a1761d TT |
555 | if (sb->s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC)) |
556 | ext2fs_swap_super(sb); | |
557 | #endif | |
e7b5d3c0 DD |
558 | if ((sb->s_magic == EXT2_SUPER_MAGIC) && |
559 | (EXT2_BLOCK_SIZE(sb) == blocksize)) { | |
557ddb2f TT |
560 | ret_sb = superblock; |
561 | if (ctx) { | |
562 | ctx->superblock = superblock; | |
563 | ctx->blocksize = blocksize; | |
564 | } | |
f1a1761d TT |
565 | break; |
566 | } | |
567 | } | |
568 | ||
569 | cleanup: | |
570 | if (io) | |
571 | io_channel_close(io); | |
572 | if (buf) | |
573 | ext2fs_free_mem(&buf); | |
574 | return (ret_sb); | |
1b6bf175 | 575 | } |
3839e657 | 576 | |
6fdc7a32 TT |
577 | /* |
578 | * Given a mode, return the ext2 file type | |
579 | */ | |
580 | int ext2_file_type(unsigned int mode) | |
581 | { | |
582 | if (LINUX_S_ISREG(mode)) | |
583 | return EXT2_FT_REG_FILE; | |
584 | ||
585 | if (LINUX_S_ISDIR(mode)) | |
586 | return EXT2_FT_DIR; | |
efc6f628 | 587 | |
6fdc7a32 TT |
588 | if (LINUX_S_ISCHR(mode)) |
589 | return EXT2_FT_CHRDEV; | |
efc6f628 | 590 | |
6fdc7a32 TT |
591 | if (LINUX_S_ISBLK(mode)) |
592 | return EXT2_FT_BLKDEV; | |
efc6f628 | 593 | |
6fdc7a32 TT |
594 | if (LINUX_S_ISLNK(mode)) |
595 | return EXT2_FT_SYMLINK; | |
596 | ||
597 | if (LINUX_S_ISFIFO(mode)) | |
598 | return EXT2_FT_FIFO; | |
efc6f628 | 599 | |
6fdc7a32 TT |
600 | if (LINUX_S_ISSOCK(mode)) |
601 | return EXT2_FT_SOCK; | |
efc6f628 | 602 | |
6fdc7a32 TT |
603 | return 0; |
604 | } | |
49a7360b JS |
605 | |
606 | #define STRIDE_LENGTH 8 | |
607 | /* | |
608 | * Helper function which zeros out _num_ blocks starting at _blk_. In | |
609 | * case of an error, the details of the error is returned via _ret_blk_ | |
610 | * and _ret_count_ if they are non-NULL pointers. Returns 0 on | |
611 | * success, and an error code on an error. | |
612 | * | |
613 | * As a special case, if the first argument is NULL, then it will | |
614 | * attempt to free the static zeroizing buffer. (This is to keep | |
615 | * programs that check for memory leaks happy.) | |
616 | */ | |
617 | errcode_t e2fsck_zero_blocks(ext2_filsys fs, blk_t blk, int num, | |
618 | blk_t *ret_blk, int *ret_count) | |
619 | { | |
e3507739 | 620 | int j, count; |
49a7360b JS |
621 | static char *buf; |
622 | errcode_t retval; | |
623 | ||
624 | /* If fs is null, clean up the static buffer and return */ | |
625 | if (!fs) { | |
626 | if (buf) { | |
627 | free(buf); | |
628 | buf = 0; | |
629 | } | |
630 | return 0; | |
631 | } | |
632 | /* Allocate the zeroizing buffer if necessary */ | |
633 | if (!buf) { | |
634 | buf = malloc(fs->blocksize * STRIDE_LENGTH); | |
635 | if (!buf) { | |
636 | com_err("malloc", ENOMEM, | |
637 | _("while allocating zeroizing buffer")); | |
638 | exit(1); | |
639 | } | |
640 | memset(buf, 0, fs->blocksize * STRIDE_LENGTH); | |
641 | } | |
642 | /* OK, do the write loop */ | |
49a7360b JS |
643 | for (j = 0; j < num; j += STRIDE_LENGTH, blk += STRIDE_LENGTH) { |
644 | count = num - j; | |
645 | if (count > STRIDE_LENGTH) | |
646 | count = STRIDE_LENGTH; | |
24a117ab | 647 | retval = io_channel_write_blk64(fs->io, blk, count, buf); |
49a7360b JS |
648 | if (retval) { |
649 | if (ret_count) | |
650 | *ret_count = count; | |
651 | if (ret_blk) | |
652 | *ret_blk = blk; | |
653 | return retval; | |
654 | } | |
655 | } | |
656 | return 0; | |
657 | } | |
80875db5 TT |
658 | |
659 | /* | |
660 | * Check to see if a filesystem is in /proc/filesystems. | |
661 | * Returns 1 if found, 0 if not | |
662 | */ | |
663 | int fs_proc_check(const char *fs_name) | |
664 | { | |
665 | FILE *f; | |
666 | char buf[80], *cp, *t; | |
667 | ||
668 | f = fopen("/proc/filesystems", "r"); | |
669 | if (!f) | |
670 | return (0); | |
671 | while (!feof(f)) { | |
672 | if (!fgets(buf, sizeof(buf), f)) | |
673 | break; | |
674 | cp = buf; | |
675 | if (!isspace(*cp)) { | |
676 | while (*cp && !isspace(*cp)) | |
677 | cp++; | |
678 | } | |
679 | while (*cp && isspace(*cp)) | |
680 | cp++; | |
681 | if ((t = strchr(cp, '\n')) != NULL) | |
682 | *t = 0; | |
683 | if ((t = strchr(cp, '\t')) != NULL) | |
684 | *t = 0; | |
685 | if ((t = strchr(cp, ' ')) != NULL) | |
686 | *t = 0; | |
687 | if (!strcmp(fs_name, cp)) { | |
688 | fclose(f); | |
689 | return (1); | |
690 | } | |
691 | } | |
692 | fclose(f); | |
693 | return (0); | |
694 | } | |
695 | ||
696 | /* | |
697 | * Check to see if a filesystem is available as a module | |
698 | * Returns 1 if found, 0 if not | |
699 | */ | |
700 | int check_for_modules(const char *fs_name) | |
701 | { | |
702 | #ifdef __linux__ | |
703 | struct utsname uts; | |
704 | FILE *f; | |
705 | char buf[1024], *cp, *t; | |
706 | int i; | |
707 | ||
708 | if (uname(&uts)) | |
709 | return (0); | |
710 | snprintf(buf, sizeof(buf), "/lib/modules/%s/modules.dep", uts.release); | |
711 | ||
712 | f = fopen(buf, "r"); | |
713 | if (!f) | |
714 | return (0); | |
715 | while (!feof(f)) { | |
716 | if (!fgets(buf, sizeof(buf), f)) | |
717 | break; | |
718 | if ((cp = strchr(buf, ':')) != NULL) | |
719 | *cp = 0; | |
720 | else | |
721 | continue; | |
722 | if ((cp = strrchr(buf, '/')) != NULL) | |
723 | cp++; | |
f2fe5da3 ES |
724 | else |
725 | cp = buf; | |
80875db5 TT |
726 | i = strlen(cp); |
727 | if (i > 3) { | |
728 | t = cp + i - 3; | |
729 | if (!strcmp(t, ".ko")) | |
730 | *t = 0; | |
731 | } | |
732 | if (!strcmp(cp, fs_name)) { | |
733 | fclose(f); | |
734 | return (1); | |
735 | } | |
736 | } | |
737 | fclose(f); | |
738 | #endif /* __linux__ */ | |
739 | return (0); | |
740 | } | |
b0258cbc TT |
741 | |
742 | /* | |
743 | * Helper function that does the right thing if write returns a | |
744 | * partial write, or an EGAIN/EINTR error. | |
745 | */ | |
746 | int write_all(int fd, char *buf, size_t count) | |
747 | { | |
748 | ssize_t ret; | |
749 | int c = 0; | |
750 | ||
751 | while (count > 0) { | |
752 | ret = write(fd, buf, count); | |
753 | if (ret < 0) { | |
754 | if ((errno == EAGAIN) || (errno == EINTR)) | |
755 | continue; | |
756 | return -1; | |
757 | } | |
758 | count -= ret; | |
759 | buf += ret; | |
760 | c += ret; | |
761 | } | |
762 | return c; | |
763 | } | |
0f5eba75 AD |
764 | |
765 | void dump_mmp_msg(struct mmp_struct *mmp, const char *msg) | |
766 | { | |
767 | ||
768 | if (msg) | |
769 | printf("MMP check failed: %s\n", msg); | |
770 | if (mmp) { | |
771 | time_t t = mmp->mmp_time; | |
772 | ||
773 | printf("MMP error info: last update: %s node: %s device: %s\n", | |
774 | ctime(&t), mmp->mmp_nodename, mmp->mmp_bdevname); | |
775 | } | |
776 | } | |
777 | ||
778 | errcode_t e2fsck_mmp_update(ext2_filsys fs) | |
779 | { | |
780 | errcode_t retval; | |
781 | ||
782 | retval = ext2fs_mmp_update(fs); | |
783 | if (retval == EXT2_ET_MMP_CHANGE_ABORT) | |
784 | dump_mmp_msg(fs->mmp_cmp, | |
785 | _("UNEXPECTED INCONSISTENCY: the filesystem is " | |
786 | "being modified while fsck is running.\n")); | |
787 | ||
788 | return retval; | |
789 | } | |
830b44f4 TT |
790 | |
791 | void e2fsck_set_bitmap_type(ext2_filsys fs, unsigned int default_type, | |
792 | const char *profile_name, unsigned int *old_type) | |
793 | { | |
794 | unsigned type; | |
830b44f4 TT |
795 | |
796 | if (old_type) | |
797 | *old_type = fs->default_bitmap_type; | |
798 | profile_get_uint(e2fsck_global_ctx->profile, "bitmaps", | |
799 | profile_name, 0, default_type, &type); | |
800 | profile_get_uint(e2fsck_global_ctx->profile, "bitmaps", | |
801 | "all", 0, type, &type); | |
802 | fs->default_bitmap_type = type ? type : default_type; | |
803 | } | |
804 | ||
805 | errcode_t e2fsck_allocate_inode_bitmap(ext2_filsys fs, const char *descr, | |
806 | int deftype, | |
807 | const char *name, | |
808 | ext2fs_inode_bitmap *ret) | |
809 | { | |
810 | errcode_t retval; | |
811 | unsigned int save_type; | |
812 | ||
813 | e2fsck_set_bitmap_type(fs, deftype, name, &save_type); | |
814 | retval = ext2fs_allocate_inode_bitmap(fs, descr, ret); | |
815 | fs->default_bitmap_type = save_type; | |
816 | return retval; | |
817 | } | |
818 | ||
819 | errcode_t e2fsck_allocate_block_bitmap(ext2_filsys fs, const char *descr, | |
820 | int deftype, | |
821 | const char *name, | |
822 | ext2fs_block_bitmap *ret) | |
823 | { | |
824 | errcode_t retval; | |
825 | unsigned int save_type; | |
826 | ||
827 | e2fsck_set_bitmap_type(fs, deftype, name, &save_type); | |
828 | retval = ext2fs_allocate_block_bitmap(fs, descr, ret); | |
829 | fs->default_bitmap_type = save_type; | |
830 | return retval; | |
831 | } | |
832 | ||
833 | errcode_t e2fsck_allocate_subcluster_bitmap(ext2_filsys fs, const char *descr, | |
834 | int deftype, | |
835 | const char *name, | |
836 | ext2fs_block_bitmap *ret) | |
837 | { | |
838 | errcode_t retval; | |
839 | unsigned int save_type; | |
840 | ||
841 | e2fsck_set_bitmap_type(fs, deftype, name, &save_type); | |
842 | retval = ext2fs_allocate_subcluster_bitmap(fs, descr, ret); | |
843 | fs->default_bitmap_type = save_type; | |
844 | return retval; | |
845 | } |