Contents of /tags/mkinitrd-6_1_2/nash/nash.c
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Mon May 4 17:23:09 2009 UTC (15 years, 4 months ago) by niro
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File size: 48197 byte(s)
Mon May 4 17:23:09 2009 UTC (15 years, 4 months ago) by niro
File MIME type: text/plain
File size: 48197 byte(s)
tagged 'mkinitrd-6_1_2'
1 | /* |
2 | * nash.c |
3 | * |
4 | * Simple code to load modules, mount root, and get things going. Uses |
5 | * dietlibc to keep things small. |
6 | * |
7 | * Erik Troan (ewt@redhat.com) |
8 | * Jeremy Katz (katzj@redhat.com) |
9 | * Peter Jones (pjones@redhat.com) |
10 | * |
11 | * Copyright 2002-2005 Red Hat Software |
12 | * |
13 | * This software may be freely redistributed under the terms of the GNU |
14 | * public license. |
15 | * |
16 | * You should have received a copy of the GNU General Public License |
17 | * along with this program; if not, write to the Free Software |
18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
19 | * |
20 | */ |
21 | |
22 | /* We internalize losetup, mount, raidautorun, and echo commands. Other |
23 | commands are run from the filesystem. Comments and blank lines work as |
24 | well, argument parsing is screwy. */ |
25 | |
26 | #define _GNU_SOURCE 1 |
27 | |
28 | #include <ctype.h> |
29 | #include <dirent.h> |
30 | #include <errno.h> |
31 | #include <fcntl.h> |
32 | #include <net/if.h> |
33 | #include <signal.h> |
34 | #include <stdio.h> |
35 | #include <stdlib.h> |
36 | #include <stdarg.h> |
37 | #include <string.h> |
38 | #include <sys/ioctl.h> |
39 | #include <sys/mount.h> |
40 | #include <sys/socket.h> |
41 | #include <sys/stat.h> |
42 | #include <sys/time.h> |
43 | #include <sys/types.h> |
44 | #include <sys/un.h> |
45 | #include <sys/wait.h> |
46 | #include <unistd.h> |
47 | #include <sys/ioctl.h> |
48 | #include <sys/reboot.h> |
49 | #include <termios.h> |
50 | #include <mntent.h> |
51 | |
52 | #include <asm/unistd.h> |
53 | |
54 | #include "name_to_dev_t.h" |
55 | #include "mount_by_label.h" |
56 | |
57 | /* Need to tell loop.h what the actual dev_t type is. */ |
58 | #undef dev_t |
59 | #if defined(__alpha) || (defined(__sparc__) && defined(__arch64__)) |
60 | #define dev_t unsigned int |
61 | #else |
62 | #define dev_t unsigned short |
63 | #endif |
64 | #include <linux/loop.h> |
65 | #undef dev_t |
66 | #define dev_t dev_t |
67 | |
68 | #define syslog klogctl |
69 | |
70 | #include <linux/cdrom.h> |
71 | #define MD_MAJOR 9 |
72 | #include <linux/raid/md_u.h> |
73 | |
74 | #ifndef RAID_AUTORUN |
75 | #define RAID_AUTORUN _IO (MD_MAJOR, 0x14) |
76 | #endif |
77 | |
78 | #ifndef MS_REMOUNT |
79 | #define MS_REMOUNT 32 |
80 | #endif |
81 | |
82 | #ifndef MS_BIND |
83 | #define MS_BIND 4096 |
84 | #endif |
85 | |
86 | #ifndef MS_MOVE |
87 | #define MS_MOVE 8192 |
88 | #endif |
89 | |
90 | #ifndef MNT_FORCE |
91 | #define MNT_FORCE 0x1 |
92 | #endif |
93 | |
94 | #ifndef MNT_DETACH |
95 | #define MNT_DETACH 0x2 |
96 | #endif |
97 | |
98 | #define MAX(a, b) ((a) > (b) ? a : b) |
99 | |
100 | static int testing = 0, quiet = 0, reallyquiet = 0; |
101 | |
102 | static int qprintf(const char *format, ...) |
103 | __attribute__((format(printf, 1, 2))); |
104 | static int eprintf(const char *format, ...) |
105 | __attribute__((format(printf, 1, 2))); |
106 | |
107 | static int |
108 | qprintf(const char *format, ...) |
109 | { |
110 | va_list ap; |
111 | int ret; |
112 | |
113 | if (quiet) |
114 | return 0; |
115 | |
116 | va_start(ap, format); |
117 | ret = vprintf(format, ap); |
118 | va_end(ap); |
119 | |
120 | fflush(stdout); |
121 | return ret; |
122 | } |
123 | |
124 | static int |
125 | eprintf(const char *format, ...) |
126 | { |
127 | va_list ap; |
128 | int ret; |
129 | |
130 | va_start(ap, format); |
131 | ret = vfprintf(stderr, format, ap); |
132 | va_end(ap); |
133 | |
134 | return ret; |
135 | } |
136 | |
137 | #define PATH "/usr/bin:/bin:/sbin:/usr/sbin" |
138 | static char * env[] = { |
139 | "PATH=" PATH, |
140 | "LVM_SUPPRESS_FD_WARNINGS=1", |
141 | NULL |
142 | }; |
143 | static char sysPath[] = PATH; |
144 | |
145 | static int |
146 | smartmknod(char * device, mode_t mode, dev_t dev) |
147 | { |
148 | char buf[256]; |
149 | char * end; |
150 | |
151 | strncpy(buf, device, 256); |
152 | |
153 | end = buf; |
154 | while (*end) { |
155 | if (*end == '/') { |
156 | *end = '\0'; |
157 | if (access(buf, F_OK) && errno == ENOENT) |
158 | mkdir(buf, 0755); |
159 | *end = '/'; |
160 | } |
161 | |
162 | end++; |
163 | } |
164 | |
165 | return mknod(device, mode, dev); |
166 | } |
167 | |
168 | static int |
169 | searchPath(char *bin, char **resolved) |
170 | { |
171 | char *fullPath = NULL; |
172 | char *pathStart; |
173 | char *pathEnd; |
174 | int rc; |
175 | |
176 | if (!strchr(bin, '/')) { |
177 | pathStart = sysPath; |
178 | while (*pathStart) { |
179 | char pec; |
180 | pathEnd = strchr(pathStart, ':'); |
181 | |
182 | if (!pathEnd) |
183 | pathEnd = pathStart + strlen(pathStart); |
184 | |
185 | pec = *pathEnd; |
186 | *pathEnd = '\0'; |
187 | |
188 | rc = asprintf(&fullPath, "%s/%s", pathStart, bin); |
189 | if (!fullPath) { |
190 | int errnum = errno; |
191 | eprintf("error searching path: %s\n", strerror(errnum)); |
192 | return -errnum; |
193 | } |
194 | |
195 | *pathEnd = pec; |
196 | pathStart = pathEnd; |
197 | if (*pathStart) |
198 | pathStart++; |
199 | |
200 | if (!access(fullPath, X_OK)) { |
201 | *resolved = fullPath; |
202 | return 0; |
203 | } |
204 | free(fullPath); |
205 | } |
206 | } |
207 | |
208 | if (!access(bin, X_OK)) { |
209 | *resolved = strdup(bin); |
210 | if (*resolved) |
211 | return 0; |
212 | } |
213 | return -errno; |
214 | } |
215 | |
216 | static char * |
217 | getArg(char * cmd, char * end, char ** arg) |
218 | { |
219 | char quote = '\0'; |
220 | |
221 | if (!cmd || cmd >= end) |
222 | return NULL; |
223 | |
224 | while (isspace(*cmd) && cmd < end) cmd++; |
225 | if (cmd >= end) |
226 | return NULL; |
227 | |
228 | if (*cmd == '"') |
229 | cmd++, quote = '"'; |
230 | else if (*cmd == '\'') |
231 | cmd++, quote = '\''; |
232 | |
233 | if (quote) { |
234 | *arg = cmd; |
235 | |
236 | /* This doesn't support \ escapes */ |
237 | while (cmd < end && *cmd != quote) cmd++; |
238 | |
239 | if (cmd == end) { |
240 | eprintf("error: quote mismatch for %s\n", *arg); |
241 | return NULL; |
242 | } |
243 | |
244 | *cmd = '\0'; |
245 | cmd++; |
246 | } else { |
247 | *arg = cmd; |
248 | while (!isspace(*cmd) && cmd < end) cmd++; |
249 | *cmd = '\0'; |
250 | if (**arg == '$') |
251 | *arg = getenv(*arg+1); |
252 | if (*arg == NULL) |
253 | *arg = ""; |
254 | } |
255 | |
256 | cmd++; |
257 | |
258 | while (isspace(*cmd)) cmd++; |
259 | |
260 | return cmd; |
261 | } |
262 | |
263 | /* taken from anaconda/isys/probe.c */ |
264 | static int |
265 | readFD (int fd, char **buf) |
266 | { |
267 | char *p; |
268 | size_t size = 16384; |
269 | int s, filesize; |
270 | |
271 | *buf = calloc (16384, sizeof (char)); |
272 | if (*buf == 0) { |
273 | eprintf("calloc failed: %s\n", strerror(errno)); |
274 | return -1; |
275 | } |
276 | |
277 | filesize = 0; |
278 | do { |
279 | p = &(*buf) [filesize]; |
280 | s = read (fd, p, 16384); |
281 | if (s < 0) |
282 | break; |
283 | filesize += s; |
284 | /* only exit for empty reads */ |
285 | if (s == 0) |
286 | break; |
287 | size += s; |
288 | *buf = realloc (*buf, size); |
289 | } while (1); |
290 | |
291 | if (filesize == 0 && s < 0) { |
292 | free (*buf); |
293 | *buf = NULL; |
294 | return -1; |
295 | } |
296 | |
297 | return filesize; |
298 | } |
299 | |
300 | #ifdef __powerpc__ |
301 | #define CMDLINESIZE 256 |
302 | #else |
303 | #define CMDLINESIZE 1024 |
304 | #endif |
305 | |
306 | /* get the contents of the kernel command line from /proc/cmdline */ |
307 | static char * |
308 | getKernelCmdLine(void) |
309 | { |
310 | int fd, i, errnum; |
311 | static char * buf = NULL; |
312 | |
313 | if (buf) |
314 | return buf; |
315 | |
316 | fd = open("/proc/cmdline", O_RDONLY, 0); |
317 | if (fd < 0) { |
318 | eprintf("getKernelCmdLine: failed to open /proc/cmdline: %s\n", |
319 | strerror(errno)); |
320 | return NULL; |
321 | } |
322 | |
323 | i = readFD(fd, &buf); |
324 | errnum = errno; |
325 | close(fd); |
326 | if (i < 0) { |
327 | eprintf("getKernelCmdLine: failed to read /proc/cmdline: %s\n", |
328 | strerror(errnum)); |
329 | return NULL; |
330 | } |
331 | return buf; |
332 | } |
333 | |
334 | /* get the start of a kernel arg "arg". returns everything after it |
335 | * (useful for things like getting the args to init=). so if you only |
336 | * want one arg, you need to terminate it at the n */ |
337 | static char * |
338 | getKernelArg(char * arg) |
339 | { |
340 | char * start, * cmdline; |
341 | int len; |
342 | |
343 | cmdline = start = getKernelCmdLine(); |
344 | if (start == NULL) |
345 | return NULL; |
346 | while (*start) { |
347 | if (isspace(*start)) { |
348 | start++; |
349 | continue; |
350 | } |
351 | len = strlen(arg); |
352 | /* don't return if it's some other arg that just starts like |
353 | this one */ |
354 | if (strncmp(start, arg, len) == 0) { |
355 | if (start[len] == '=') |
356 | return start + len + 1; |
357 | if (!start[len] || isspace(start[len])) |
358 | return start + len; |
359 | } |
360 | while (*++start && !isspace(*start)) |
361 | ; |
362 | } |
363 | |
364 | return NULL; |
365 | } |
366 | |
367 | static int |
368 | mountCommand(char * cmd, char * end) |
369 | { |
370 | char * fsType = NULL; |
371 | char * device; |
372 | char * mntPoint; |
373 | char * deviceDir = NULL; |
374 | char * options = NULL; |
375 | int mustRemove = 0; |
376 | int mustRemoveDir = 0; |
377 | int rc = 0; |
378 | int flags = MS_MGC_VAL; |
379 | char * newOpts; |
380 | |
381 | cmd = getArg(cmd, end, &device); |
382 | if (!cmd) { |
383 | eprintf( |
384 | "usage: mount [--ro] [-o <opts>] -t <type> <device> <mntpoint>\n"); |
385 | return 1; |
386 | } |
387 | |
388 | while (cmd && *device == '-') { |
389 | if (!strcmp(device, "--ro")) { |
390 | flags |= MS_RDONLY; |
391 | } else if (!strcmp(device, "--bind")) { |
392 | flags = MS_BIND; |
393 | fsType = "none"; |
394 | } else if (!strcmp(device, "-o")) { |
395 | cmd = getArg(cmd, end, &options); |
396 | if (!cmd) { |
397 | eprintf("mount: -o requires arguments\n"); |
398 | return 1; |
399 | } |
400 | } else if (!strcmp(device, "-t")) { |
401 | if (!(cmd = getArg(cmd, end, &fsType))) { |
402 | eprintf("mount: missing filesystem type\n"); |
403 | return 1; |
404 | } |
405 | } |
406 | |
407 | cmd = getArg(cmd, end, &device); |
408 | } |
409 | |
410 | if (!cmd) { |
411 | eprintf("mount: missing device or mountpoint\n"); |
412 | return 1; |
413 | } |
414 | |
415 | if (!(cmd = getArg(cmd, end, &mntPoint))) { |
416 | struct mntent *mnt; |
417 | FILE *fstab; |
418 | |
419 | fstab = fopen("/fstab", "r"); |
420 | do { |
421 | if (!fstab || !(mnt = getmntent(fstab))) { |
422 | eprintf("mount: missing mount point\n"); |
423 | return 1; |
424 | } |
425 | if (!strcmp(mnt->mnt_dir, device)) { |
426 | device = mnt->mnt_fsname; |
427 | mntPoint = mnt->mnt_dir; |
428 | |
429 | if (!strcmp(mnt->mnt_type, "bind")) { |
430 | flags |= MS_BIND; |
431 | fsType = "none"; |
432 | } else |
433 | fsType = mnt->mnt_type; |
434 | |
435 | options = mnt->mnt_opts; |
436 | break; |
437 | } |
438 | } while(1); |
439 | |
440 | fclose(fstab); |
441 | } |
442 | |
443 | if (!fsType) { |
444 | eprintf("mount: filesystem type expected\n"); |
445 | return 1; |
446 | } |
447 | |
448 | if (cmd && cmd < end) { |
449 | eprintf("mount: unexpected arguments\n"); |
450 | return 1; |
451 | } |
452 | |
453 | /* need to deal with options */ |
454 | if (options) { |
455 | char * end; |
456 | char * start = options; |
457 | |
458 | newOpts = alloca(strlen(options) + 1); |
459 | *newOpts = '\0'; |
460 | |
461 | while (*start) { |
462 | end = strchr(start, ','); |
463 | if (!end) { |
464 | end = start + strlen(start); |
465 | } else { |
466 | *end = '\0'; |
467 | end++; |
468 | } |
469 | |
470 | if (!strcmp(start, "ro")) |
471 | flags |= MS_RDONLY; |
472 | else if (!strcmp(start, "rw")) |
473 | flags &= ~MS_RDONLY; |
474 | else if (!strcmp(start, "nosuid")) |
475 | flags |= MS_NOSUID; |
476 | else if (!strcmp(start, "suid")) |
477 | flags &= ~MS_NOSUID; |
478 | else if (!strcmp(start, "nodev")) |
479 | flags |= MS_NODEV; |
480 | else if (!strcmp(start, "dev")) |
481 | flags &= ~MS_NODEV; |
482 | else if (!strcmp(start, "noexec")) |
483 | flags |= MS_NOEXEC; |
484 | else if (!strcmp(start, "exec")) |
485 | flags &= ~MS_NOEXEC; |
486 | else if (!strcmp(start, "sync")) |
487 | flags |= MS_SYNCHRONOUS; |
488 | else if (!strcmp(start, "async")) |
489 | flags &= ~MS_SYNCHRONOUS; |
490 | else if (!strcmp(start, "nodiratime")) |
491 | flags |= MS_NODIRATIME; |
492 | else if (!strcmp(start, "diratime")) |
493 | flags &= ~MS_NODIRATIME; |
494 | else if (!strcmp(start, "noatime")) |
495 | flags |= MS_NOATIME; |
496 | else if (!strcmp(start, "atime")) |
497 | flags &= ~MS_NOATIME; |
498 | else if (!strcmp(start, "remount")) |
499 | flags |= MS_REMOUNT; |
500 | else if (!strcmp(start, "defaults")) |
501 | ; |
502 | else { |
503 | if (*newOpts) |
504 | strcat(newOpts, ","); |
505 | strcat(newOpts, start); |
506 | } |
507 | |
508 | start = end; |
509 | } |
510 | |
511 | options = newOpts; |
512 | } |
513 | |
514 | if (!strncmp("LABEL=", device, 6)) { |
515 | int major, minor; |
516 | char * devName; |
517 | char * ptr; |
518 | int i; |
519 | |
520 | devName = get_spec_by_volume_label(device + 6, &major, &minor); |
521 | |
522 | if (devName) { |
523 | device = devName; |
524 | if (access(device, F_OK)) { |
525 | ptr = device; |
526 | i = 0; |
527 | while (*ptr) |
528 | if (*ptr++ == '/') |
529 | i++; |
530 | if (i > 2) { |
531 | deviceDir = alloca(strlen(device) + 1); |
532 | strcpy(deviceDir, device); |
533 | ptr = deviceDir + (strlen(device) - 1); |
534 | while (*ptr != '/') |
535 | *ptr-- = '\0'; |
536 | if (mkdir(deviceDir, 0644)) { |
537 | eprintf("mkdir: cannot create directory %s: %s\n", |
538 | deviceDir, strerror(errno)); |
539 | } else { |
540 | mustRemoveDir = 1; |
541 | } |
542 | } |
543 | if (smartmknod(device, S_IFBLK | 0600, makedev(major, minor))) { |
544 | printf("mount: cannot create device %s (%d,%d)\n", |
545 | device, major, minor); |
546 | return 1; |
547 | } |
548 | mustRemove = 1; |
549 | } |
550 | } |
551 | } |
552 | |
553 | if (testing) { |
554 | printf("mount %s%s%s-t '%s' '%s' '%s' (%s%s%s%s%s%s%s)\n", |
555 | options ? "-o '" : "", |
556 | options ? options : "", |
557 | options ? "\' " : "", |
558 | fsType, device, mntPoint, |
559 | (flags & MS_RDONLY) ? "ro " : "", |
560 | (flags & MS_NOSUID) ? "nosuid " : "", |
561 | (flags & MS_NODEV) ? "nodev " : "", |
562 | (flags & MS_NOEXEC) ? "noexec " : "", |
563 | (flags & MS_SYNCHRONOUS) ? "sync " : "", |
564 | (flags & MS_REMOUNT) ? "remount " : "", |
565 | (flags & MS_NOATIME) ? "noatime " : "" |
566 | ); |
567 | } else { |
568 | if (mount(device, mntPoint, fsType, flags, options) < 0) { |
569 | eprintf("mount: error %s mounting %s on %s as %s\n", |
570 | strerror(errno), device, mntPoint, fsType); |
571 | rc = 1; |
572 | } |
573 | } |
574 | |
575 | if (mustRemove) unlink(device); |
576 | if (mustRemoveDir) rmdir(deviceDir); |
577 | |
578 | return rc; |
579 | } |
580 | |
581 | static int |
582 | otherCommand(char * bin, char * cmd, char * end, int doFork) |
583 | { |
584 | char ** args; |
585 | char ** nextArg; |
586 | int pid, wpid; |
587 | int status; |
588 | char * stdoutFile = NULL; |
589 | int stdoutFd = 1; |
590 | |
591 | args = (char **)calloc(128, sizeof (char *)); |
592 | if (!args) |
593 | return 1; |
594 | nextArg = args; |
595 | |
596 | if (access(bin, X_OK)) { |
597 | eprintf("failed to execute %s: %s\n", bin, strerror(errno)); |
598 | return 1; |
599 | } |
600 | |
601 | *nextArg = strdup(bin); |
602 | |
603 | while (cmd && cmd < end) { |
604 | nextArg++; |
605 | cmd = getArg(cmd, end, nextArg); |
606 | } |
607 | |
608 | if (cmd) nextArg++; |
609 | *nextArg = NULL; |
610 | |
611 | /* if the next-to-last arg is a >, redirect the output properly */ |
612 | if (((nextArg - args) >= 2) && !strcmp(*(nextArg - 2), ">")) { |
613 | stdoutFile = *(nextArg - 1); |
614 | *(nextArg - 2) = NULL; |
615 | |
616 | stdoutFd = open(stdoutFile, O_CREAT | O_RDWR | O_TRUNC, 0600); |
617 | if (stdoutFd < 0) { |
618 | eprintf("nash: failed to open %s: %s\n", stdoutFile, |
619 | strerror(errno)); |
620 | return 1; |
621 | } |
622 | } |
623 | |
624 | if (testing) { |
625 | printf("%s ", bin); |
626 | nextArg = args + 1; |
627 | while (*nextArg) |
628 | printf(" '%s'", *nextArg++); |
629 | if (stdoutFile) |
630 | printf(" (> %s)", stdoutFile); |
631 | printf("\n"); |
632 | } else { |
633 | if (!doFork || !(pid = fork())) { |
634 | /* child */ |
635 | int errnum; |
636 | |
637 | dup2(stdoutFd, 1); |
638 | execve(args[0], args, env); |
639 | errnum = errno; /* so we'll have it after printf */ |
640 | eprintf("ERROR: failed in exec of %s: %s\n", args[0], |
641 | strerror(errnum)); |
642 | return errnum; |
643 | } |
644 | |
645 | if (stdoutFd != 1) |
646 | close(stdoutFd); |
647 | |
648 | for (;;) { |
649 | wpid = wait4(-1, &status, 0, NULL); |
650 | if (wpid == -1) { |
651 | eprintf("ERROR: Failed to wait for process %d: %s\n", wpid, |
652 | strerror(errno)); |
653 | } |
654 | |
655 | if (wpid != pid) |
656 | continue; |
657 | |
658 | if (!WIFEXITED(status) || WEXITSTATUS(status)) { |
659 | #if 0 |
660 | eprintf("ERROR: %s exited abnormally with value %d (pid %d)\n", |
661 | args[0], WEXITSTATUS(status), pid); |
662 | #endif |
663 | return 1; |
664 | } |
665 | break; |
666 | } |
667 | } |
668 | |
669 | return 0; |
670 | } |
671 | |
672 | static int |
673 | lnCommand(char *cmd, char *end) |
674 | { |
675 | char *oldpath, *newpath; |
676 | int symbolic = 0, rc; |
677 | |
678 | if (!(cmd = getArg(cmd, end, &oldpath))) { |
679 | eprintf("ln: argument expected\n"); |
680 | return 1; |
681 | } |
682 | |
683 | if (!strcmp(cmd, "-s")) { |
684 | symbolic = 1; |
685 | if (!(cmd = getArg(cmd, end, &oldpath))) { |
686 | eprintf("ln: argument expected\n"); |
687 | return 1; |
688 | } |
689 | } |
690 | |
691 | if (!(cmd = getArg(cmd, end, &newpath))) { |
692 | eprintf("ln: argument expected\n"); |
693 | return 1; |
694 | } |
695 | |
696 | if (symbolic) |
697 | rc = symlink(oldpath, newpath); |
698 | else |
699 | rc = link(oldpath, newpath); |
700 | |
701 | if (rc > 0) { |
702 | eprintf("ln: error: %s\n", strerror(errno)); |
703 | return 1; |
704 | } |
705 | |
706 | return 0; |
707 | } |
708 | |
709 | #ifdef DEBUG |
710 | static int lsdir(char *thedir, char * prefix) |
711 | { |
712 | DIR * dir; |
713 | struct dirent * entry; |
714 | struct stat sb; |
715 | char * fn; |
716 | |
717 | if (!(dir = opendir(thedir))) { |
718 | eprintf("error opening %s: %s\n", thedir, strerror(errno)); |
719 | return 1; |
720 | } |
721 | |
722 | fn = calloc(1024, sizeof (char)); |
723 | while ((entry = readdir(dir))) { |
724 | if (entry->d_name[0] == '.') |
725 | continue; |
726 | snprintf(fn, 1024, "%s/%s", thedir, entry->d_name); |
727 | stat(fn, &sb); |
728 | printf("%s%s", prefix, fn); |
729 | |
730 | if (S_ISDIR(sb.st_mode)) { |
731 | char * pfx; |
732 | pfx = calloc(strlen(prefix) + 3, sizeof (char)); |
733 | sprintf(pfx, "%s ", prefix); |
734 | printf("/\n"); |
735 | } else if (S_ISCHR(sb.st_mode)) { |
736 | printf(" c %d %d\n", major(sb.st_rdev), minor(sb.st_rdev)); |
737 | } else if (S_ISBLK(sb.st_mode)) { |
738 | printf(" b %d %d\n", major(sb.st_rdev), minor(sb.st_rdev)); |
739 | } else if (S_ISLNK(sb.st_mode)) { |
740 | char * target; |
741 | target = calloc(1024, sizeof (char)); |
742 | readlink(fn, target, 1024); |
743 | printf("->%s\n", target); |
744 | free(target); |
745 | } else { |
746 | printf("\n"); |
747 | } |
748 | } |
749 | return 0; |
750 | } |
751 | |
752 | static int |
753 | catCommand(char * cmd, char * end) |
754 | { |
755 | char * file; |
756 | char * buf; |
757 | int fd, n; |
758 | |
759 | if (!(cmd = getArg(cmd, end, &file))) { |
760 | eprintf("cat: argument expected\n"); |
761 | return 1; |
762 | } |
763 | |
764 | if ((fd = open(file, O_RDONLY)) < 0) { |
765 | eprintf("cat: error opening %s: %s\n", file, strerror(errno)); |
766 | return 1; |
767 | } |
768 | |
769 | buf = calloc(1024, sizeof (char)); |
770 | while ((n = read(fd, buf, 1024)) > 0) { |
771 | write(1, buf, n); |
772 | } |
773 | return 0; |
774 | } |
775 | |
776 | static int |
777 | lsCommand(char * cmd, char * end) |
778 | { |
779 | char * dir; |
780 | |
781 | if (!(cmd = getArg(cmd, end, &dir))) { |
782 | eprintf("ls: argument expected\n"); |
783 | return 1; |
784 | } |
785 | |
786 | lsdir(dir, ""); |
787 | return 0; |
788 | } |
789 | #endif |
790 | |
791 | static int |
792 | execCommand(char *cmd, char *end) |
793 | { |
794 | char *bin, *fullPath = NULL; |
795 | int rc; |
796 | |
797 | if (!(cmd = getArg(cmd, end, &bin))) { |
798 | eprintf("exec: argument expected\n"); |
799 | return 1; |
800 | } |
801 | rc = searchPath(bin, &fullPath); |
802 | if (rc < 0) |
803 | return 1; |
804 | |
805 | rc = otherCommand(fullPath, cmd, end, 0); |
806 | return rc == -ENOENT ? 1 : rc; |
807 | } |
808 | |
809 | static int |
810 | losetupCommand(char * cmd, char * end) |
811 | { |
812 | char * device; |
813 | char * file; |
814 | int fd; |
815 | struct loop_info loopInfo; |
816 | int dev; |
817 | |
818 | if (!(cmd = getArg(cmd, end, &device))) { |
819 | eprintf("losetup: missing device\n"); |
820 | return 1; |
821 | } |
822 | |
823 | if (!(cmd = getArg(cmd, end, &file))) { |
824 | eprintf("losetup: missing file\n"); |
825 | return 1; |
826 | } |
827 | |
828 | if (cmd < end) { |
829 | eprintf("losetup: unexpected arguments\n"); |
830 | return 1; |
831 | } |
832 | |
833 | if (testing) { |
834 | printf("losetup '%s' '%s'\n", device, file); |
835 | } else { |
836 | dev = open(device, O_RDWR, 0); |
837 | if (dev < 0) { |
838 | eprintf("losetup: failed to open %s: %s\n", device,strerror(errno)); |
839 | return 1; |
840 | } |
841 | |
842 | fd = open(file, O_RDWR, 0); |
843 | if (fd < 0) { |
844 | eprintf("losetup: failed to open %s: %s\n", file, strerror(errno)); |
845 | close(dev); |
846 | return 1; |
847 | } |
848 | |
849 | if (ioctl(dev, LOOP_SET_FD, (long) fd)) { |
850 | eprintf("losetup: LOOP_SET_FD failed for fd %d: %s\n", fd, |
851 | strerror(errno)); |
852 | close(dev); |
853 | close(fd); |
854 | return 1; |
855 | } |
856 | |
857 | close(fd); |
858 | |
859 | memset(&loopInfo, 0, sizeof(loopInfo)); |
860 | strcpy(loopInfo.lo_name, file); |
861 | |
862 | if (ioctl(dev, LOOP_SET_STATUS, &loopInfo)) |
863 | eprintf("losetup: LOOP_SET_STATUS failed: %s\n", strerror(errno)); |
864 | |
865 | close(dev); |
866 | } |
867 | |
868 | return 0; |
869 | } |
870 | |
871 | #define RAID_MAJOR 9 |
872 | static int |
873 | raidautorunCommand(char * cmd, char * end) |
874 | { |
875 | char * device; |
876 | int fd; |
877 | |
878 | if (!(cmd = getArg(cmd, end, &device))) { |
879 | eprintf("raidautorun: raid device expected as first argument\n"); |
880 | return 1; |
881 | } |
882 | |
883 | if (cmd < end) { |
884 | eprintf("raidautorun: unexpected arguments\n"); |
885 | return 1; |
886 | } |
887 | |
888 | /* with udev, the raid devices don't exist until they get started. |
889 | * this won't work so well with raidautorun. so, let's be smart |
890 | * and create them ourselves if we need to */ |
891 | if (access(device, R_OK & W_OK)) { |
892 | int minor; |
893 | if (sscanf(device, "/dev/md%d", &minor) != 1) { |
894 | eprintf("raidautorun: unable to autocreate %s\n", device); |
895 | return 1; |
896 | } |
897 | |
898 | if (smartmknod(device, S_IFBLK | 0600, makedev(RAID_MAJOR, minor))) { |
899 | eprintf("raidautorun: unable to autocreate %s\n", device); |
900 | return 1; |
901 | } |
902 | } |
903 | |
904 | fd = open(device, O_RDWR, 0); |
905 | if (fd < 0) { |
906 | eprintf("raidautorun: failed to open %s: %s\n", device,strerror(errno)); |
907 | return 1; |
908 | } |
909 | |
910 | if (ioctl(fd, RAID_AUTORUN, 0)) { |
911 | eprintf("raidautorun: RAID_AUTORUN failed: %s\n", strerror(errno)); |
912 | close(fd); |
913 | return 1; |
914 | } |
915 | |
916 | close(fd); |
917 | return 0; |
918 | } |
919 | |
920 | /* remove all files/directories below dirName -- don't cross mountpoints */ |
921 | static int |
922 | recursiveRemove(char * dirName) |
923 | { |
924 | struct stat sb,rb; |
925 | DIR * dir; |
926 | struct dirent * d; |
927 | char * strBuf = alloca(strlen(dirName) + 1024); |
928 | |
929 | if (!(dir = opendir(dirName))) { |
930 | eprintf("error opening %s: %s\n", dirName, strerror(errno)); |
931 | return 0; |
932 | } |
933 | |
934 | if (fstat(dirfd(dir),&rb)) { |
935 | eprintf("unable to stat %s: %s\n", dirName, strerror(errno)); |
936 | return 0; |
937 | } |
938 | |
939 | errno = 0; |
940 | while ((d = readdir(dir))) { |
941 | errno = 0; |
942 | |
943 | if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, "..")) { |
944 | errno = 0; |
945 | continue; |
946 | } |
947 | |
948 | strcpy(strBuf, dirName); |
949 | strcat(strBuf, "/"); |
950 | strcat(strBuf, d->d_name); |
951 | |
952 | if (lstat(strBuf, &sb)) { |
953 | eprintf("failed to stat %s: %s\n", strBuf, strerror(errno)); |
954 | errno = 0; |
955 | continue; |
956 | } |
957 | |
958 | /* only descend into subdirectories if device is same as dir */ |
959 | if (S_ISDIR(sb.st_mode)) { |
960 | if (sb.st_dev == rb.st_dev) { |
961 | recursiveRemove(strBuf); |
962 | if (rmdir(strBuf)) |
963 | eprintf("failed to rmdir %s: %s\n", strBuf, |
964 | strerror(errno)); |
965 | } |
966 | errno = 0; |
967 | continue; |
968 | } |
969 | |
970 | if (unlink(strBuf)) { |
971 | eprintf("failed to remove %s: %s\n", strBuf, strerror(errno)); |
972 | errno = 0; |
973 | continue; |
974 | } |
975 | } |
976 | |
977 | if (errno) { |
978 | closedir(dir); |
979 | eprintf("error reading from %s: %s\n", dirName, strerror(errno)); |
980 | return 1; |
981 | } |
982 | |
983 | closedir(dir); |
984 | |
985 | return 0; |
986 | } |
987 | |
988 | static int |
989 | setuprootCommand(char *cmd, char *end) |
990 | { |
991 | FILE *fp; |
992 | char *new; |
993 | |
994 | qprintf("Setting up new root fs\n"); |
995 | |
996 | cmd = getArg(cmd, end, &new); |
997 | if (cmd) { |
998 | eprintf("setuproot: unexpected arguments\n"); |
999 | return 1; |
1000 | } |
1001 | new = "/sysroot"; |
1002 | |
1003 | if (chdir(new)) { |
1004 | eprintf("setuproot: chdir(%s) failed: %s\n", new, strerror(errno)); |
1005 | return 1; |
1006 | } |
1007 | |
1008 | if (mount("/dev", "./dev", NULL, MS_BIND, NULL) < 0) |
1009 | eprintf("setuproot: moving /dev failed: %s\n", strerror(errno)); |
1010 | |
1011 | if (!getKernelArg("nomnt")) { |
1012 | fp = setmntent("./etc/fstab.sys", "r"); |
1013 | if (fp) |
1014 | qprintf("using fstab.sys from mounted FS\n"); |
1015 | else { |
1016 | fp = setmntent("/etc/fstab.sys", "r"); |
1017 | if (fp) |
1018 | qprintf("using fstab.sys from initrd\n"); |
1019 | } |
1020 | if (fp) { |
1021 | struct mntent *mnt; |
1022 | |
1023 | while((mnt = getmntent(fp))) { |
1024 | char *start = NULL, *end; |
1025 | char *target = NULL; |
1026 | struct stat sb; |
1027 | |
1028 | qprintf("mounting %s\n", mnt->mnt_dir); |
1029 | if (asprintf(&target, ".%s", mnt->mnt_dir) < 0) { |
1030 | eprintf("setuproot: out of memory while mounting %s\n", |
1031 | mnt->mnt_dir); |
1032 | continue; |
1033 | } |
1034 | |
1035 | if (stat(target, &sb) < 0) { |
1036 | free(target); |
1037 | target = NULL; |
1038 | continue; |
1039 | } |
1040 | |
1041 | if (asprintf(&start, "-o %s -t %s %s .%s\n", |
1042 | mnt->mnt_opts, mnt->mnt_type, mnt->mnt_fsname, |
1043 | mnt->mnt_dir) < 0) { |
1044 | eprintf("setuproot: out of memory while mounting %s\n", |
1045 | mnt->mnt_dir); |
1046 | continue; |
1047 | } |
1048 | |
1049 | end = start + 1; |
1050 | while (*end && (*end != '\n')) end++; |
1051 | /* end points to the \n at the end of the command */ |
1052 | |
1053 | if (mountCommand(start, end) != 0) |
1054 | eprintf("setuproot: mount returned error\n"); |
1055 | |
1056 | free(start); |
1057 | start = NULL; |
1058 | } |
1059 | endmntent(fp); |
1060 | } else { |
1061 | struct { |
1062 | char *source; |
1063 | char *target; |
1064 | char *type; |
1065 | int flags; |
1066 | void *data; |
1067 | } fstab[] = { |
1068 | { "/proc", "./proc", "proc", 0, NULL }, |
1069 | { "/sys", "./sys", "sysfs", 0, NULL }, |
1070 | #if 0 |
1071 | { "/dev/pts", "./dev/pts", "devpts", 0, "gid=5,mode=620" }, |
1072 | { "/dev/shm", "./dev/shm", "tmpfs", 0, NULL }, |
1073 | { "/selinux", "/selinux", "selinuxfs", 0, NULL }, |
1074 | #endif |
1075 | { NULL, } |
1076 | }; |
1077 | int i = 0; |
1078 | |
1079 | qprintf("no fstab.sys, mounting internal defaults\n"); |
1080 | for (; fstab[i].source != NULL; i++) { |
1081 | if (mount(fstab[i].source, fstab[i].target, fstab[i].type, |
1082 | fstab[i].flags, fstab[i].data) < 0) |
1083 | eprintf("setuproot: error mounting %s: %s\n", |
1084 | fstab[i].source, strerror(errno)); |
1085 | } |
1086 | } |
1087 | } |
1088 | |
1089 | chdir("/"); |
1090 | return 0; |
1091 | } |
1092 | |
1093 | #define MAX_INIT_ARGS 32 |
1094 | static int |
1095 | switchrootCommand(char * cmd, char * end) |
1096 | { |
1097 | /* Don't try to unmount the old "/", there's no way to do it. */ |
1098 | const char * umounts[] = { "/dev", "/proc", "/sys", NULL }; |
1099 | const char *initprogs[] = { "/sbin/init", "/etc/init", |
1100 | "/bin/init", "/bin/sh", NULL }; |
1101 | char *init, **initargs; |
1102 | char *cmdline = NULL; |
1103 | char *new; |
1104 | int fd, i = 0; |
1105 | |
1106 | cmd = getArg(cmd, end, &new); |
1107 | if (cmd) { |
1108 | eprintf("switchroot: unexpected arguments\n"); |
1109 | return 1; |
1110 | } |
1111 | new = "/sysroot"; |
1112 | |
1113 | /* this has to happen before we unmount /proc */ |
1114 | init = getKernelArg("init"); |
1115 | if (init == NULL) |
1116 | cmdline = getKernelCmdLine(); |
1117 | |
1118 | fd = open("/", O_RDONLY); |
1119 | for (; umounts[i] != NULL; i++) { |
1120 | qprintf("unmounting old %s\n", umounts[i]); |
1121 | if (umount2(umounts[i], MNT_DETACH) < 0) { |
1122 | eprintf("ERROR unmounting old %s: %s\n",umounts[i],strerror(errno)); |
1123 | eprintf("forcing unmount of %s\n", umounts[i]); |
1124 | umount2(umounts[i], MNT_FORCE); |
1125 | } |
1126 | } |
1127 | i=0; |
1128 | |
1129 | chdir(new); |
1130 | |
1131 | recursiveRemove("/"); |
1132 | |
1133 | if (mount(new, "/", NULL, MS_MOVE, NULL) < 0) { |
1134 | eprintf("switchroot: mount failed: %s\n", strerror(errno)); |
1135 | close(fd); |
1136 | return 1; |
1137 | } |
1138 | |
1139 | if (chroot(".") || chdir("/")) { |
1140 | eprintf("switchroot: chroot() failed: %s\n", strerror(errno)); |
1141 | close(fd); |
1142 | return 1; |
1143 | } |
1144 | |
1145 | /* release the old "/" */ |
1146 | close(fd); |
1147 | |
1148 | if ((fd = open("/dev/console", O_RDWR)) < 0) { |
1149 | eprintf("ERROR opening /dev/console: %s\n", strerror(errno)); |
1150 | eprintf("Trying to use fd 0 instead.\n"); |
1151 | fd = dup2(0, 3); |
1152 | close(0); |
1153 | } else { |
1154 | dup2(fd, 3); |
1155 | close(fd); |
1156 | close(0); |
1157 | fd = 3; |
1158 | dup2(fd, 0); |
1159 | } |
1160 | close(1); |
1161 | dup2(fd, 1); |
1162 | close(2); |
1163 | dup2(fd, 2); |
1164 | close(fd); |
1165 | |
1166 | if (init == NULL) { |
1167 | for (i = 0; initprogs[i] != NULL; i++) { |
1168 | if (!access(initprogs[i], X_OK)) { |
1169 | init = strdup(initprogs[i]); |
1170 | break; |
1171 | } |
1172 | } |
1173 | } |
1174 | i = 0; |
1175 | |
1176 | initargs = (char **)calloc(MAX_INIT_ARGS+1, sizeof (char *)); |
1177 | if (cmdline && init) { |
1178 | initargs[i++] = strdup(init); |
1179 | } else { |
1180 | cmdline = init; |
1181 | initargs[0] = NULL; |
1182 | } |
1183 | |
1184 | if (cmdline != NULL) { |
1185 | char * chptr, * start; |
1186 | |
1187 | start = chptr = cmdline; |
1188 | for (; (i < MAX_INIT_ARGS) && (*start != '\0'); i++) { |
1189 | while (*chptr && !isspace(*chptr)) chptr++; |
1190 | if (*chptr != '\0') *(chptr++) = '\0'; |
1191 | /* |
1192 | * On x86_64, the kernel adds a magic command line parameter |
1193 | * *after* everything you pass. Bash doesn't know what "console=" |
1194 | * means, so it exits, init gets killed, etc, etc. Bad news. |
1195 | * |
1196 | * Apparently being removed "soon", but for now, nash needs to |
1197 | * special case it. |
1198 | */ |
1199 | if (cmdline == init && !strncmp(start, "console=", 8)) { |
1200 | if (!*chptr) |
1201 | initargs[i] = NULL; |
1202 | else |
1203 | i--; |
1204 | start = chptr; |
1205 | continue; |
1206 | } |
1207 | initargs[i] = strdup(start); |
1208 | start = chptr; |
1209 | } |
1210 | } |
1211 | |
1212 | initargs[i] = NULL; |
1213 | |
1214 | if (access(initargs[0], X_OK)) { |
1215 | eprintf("WARNING: can't access %s\n", initargs[0]); |
1216 | } |
1217 | execv(initargs[0], initargs); |
1218 | |
1219 | eprintf("exec of init (%s) failed!!!: %s\n", initargs[0], strerror(errno)); |
1220 | return 1; |
1221 | } |
1222 | |
1223 | static int |
1224 | isEchoQuiet(int fd) |
1225 | { |
1226 | if (!reallyquiet) |
1227 | return 0; |
1228 | if (fd != 1) |
1229 | return 0; |
1230 | return 1; |
1231 | } |
1232 | |
1233 | static int |
1234 | echoCommand(char * cmd, char * end) |
1235 | { |
1236 | char * args[256]; |
1237 | char ** nextArg = args; |
1238 | int outFd = 1; |
1239 | int num = 0; |
1240 | int i; |
1241 | int newline = 1; |
1242 | int length = 0; |
1243 | char *string; |
1244 | |
1245 | if (testing) |
1246 | qprintf("(echo) "); |
1247 | |
1248 | while ((cmd = getArg(cmd, end, nextArg))) { |
1249 | if (!strncmp("-n", *nextArg, MAX(2, strlen(*nextArg)))) { |
1250 | newline = 0; |
1251 | } else { |
1252 | length += strlen(*nextArg); |
1253 | nextArg++, num++; |
1254 | } |
1255 | } |
1256 | length += num + 1; |
1257 | |
1258 | if ((nextArg - args >= 2) && !strcmp(*(nextArg - 2), ">")) { |
1259 | outFd = open(*(nextArg - 1), O_WRONLY | O_CREAT | O_TRUNC, 0644); |
1260 | if (outFd < 0) { |
1261 | eprintf("echo: cannot open %s for write: %s\n", *(nextArg - 1), |
1262 | strerror(errno)); |
1263 | return 1; |
1264 | } |
1265 | |
1266 | newline = 0; |
1267 | num -= 2; |
1268 | } |
1269 | string = (char *)calloc(length, sizeof (char)); |
1270 | *string = '\0'; |
1271 | for (i = 0; i < num;i ++) { |
1272 | if (i) strcat(string, " "); |
1273 | strncat(string, args[i], strlen(args[i])); |
1274 | } |
1275 | |
1276 | if (newline) strcat(string, "\n"); |
1277 | if (!isEchoQuiet(outFd)) write(outFd, string, strlen(string)); |
1278 | |
1279 | if (outFd != 1) close(outFd); |
1280 | free(string); |
1281 | |
1282 | return 0; |
1283 | } |
1284 | |
1285 | static int |
1286 | umountCommand(char * cmd, char * end) |
1287 | { |
1288 | char * path; |
1289 | |
1290 | if (!(cmd = getArg(cmd, end, &path))) { |
1291 | eprintf("umount: path expected\n"); |
1292 | return 1; |
1293 | } |
1294 | |
1295 | if (cmd < end) { |
1296 | eprintf("umount: unexpected arguments\n"); |
1297 | return 1; |
1298 | } |
1299 | |
1300 | if (umount(path) < 0) { |
1301 | eprintf("umount %s failed: %s\n", path, strerror(errno)); |
1302 | return 1; |
1303 | } |
1304 | |
1305 | return 0; |
1306 | } |
1307 | |
1308 | static int |
1309 | mkpathbyspec(char * spec, char * path) |
1310 | { |
1311 | int major, minor; |
1312 | |
1313 | if (!spec) |
1314 | return -1; |
1315 | |
1316 | if (!strncmp(spec, "LABEL=", 6)) { |
1317 | if (get_spec_by_volume_label(spec + 6, &major, &minor)) { |
1318 | if (smartmknod(path, S_IFBLK | 0600, makedev(major, minor))) { |
1319 | eprintf("mkdev: cannot create device %s (%d,%d)\n", |
1320 | path, major, minor); |
1321 | return 1; |
1322 | } |
1323 | |
1324 | qprintf("created path for %s: %d/%d\n", spec, major, minor); |
1325 | return 0; |
1326 | } |
1327 | |
1328 | eprintf("label %s not found\n", spec + 6); |
1329 | return 1; |
1330 | } |
1331 | |
1332 | if (!strncmp(spec, "UUID=", 5)) { |
1333 | if (get_spec_by_uuid(spec+5, &major, &minor)) { |
1334 | if (smartmknod(path, S_IFBLK | 0600, makedev(major, minor))) { |
1335 | eprintf("mkdev: cannot create device %s (%d,%d)\n", |
1336 | path, major, minor); |
1337 | return 1; |
1338 | } |
1339 | |
1340 | return 0; |
1341 | } |
1342 | |
1343 | eprintf("mkdev: UUID %s not found\n", spec+5); |
1344 | return 1; |
1345 | |
1346 | } |
1347 | #if 0 |
1348 | qprintf("mkdev: '%s' is not a UUID or LABEL spec\n", spec); |
1349 | #endif |
1350 | return -1; |
1351 | } |
1352 | |
1353 | /* 2.6 magic swsusp stuff */ |
1354 | static int |
1355 | resumeCommand(char * cmd, char * end) |
1356 | { |
1357 | char * resumedev = NULL; |
1358 | char * resume = NULL; |
1359 | int fd; |
1360 | struct stat sb; |
1361 | char buf[25]; |
1362 | |
1363 | if (!(cmd = getArg(cmd, end, &resume))) { |
1364 | eprintf("resume: resume device expected\n"); |
1365 | return 1; |
1366 | } |
1367 | |
1368 | if (access("/sys/power/resume", W_OK)) { |
1369 | /* eprintf("/sys/power/resume doesn't exist, can't resume!\n");*/ |
1370 | return 0; |
1371 | } |
1372 | |
1373 | if (strstr(getKernelCmdLine(), "noresume")) { |
1374 | qprintf("noresume passed, not resuming...\n"); |
1375 | return 0; |
1376 | } |
1377 | |
1378 | resumedev = getKernelArg("resume"); |
1379 | if (resumedev == NULL) { |
1380 | resumedev = resume; |
1381 | } |
1382 | |
1383 | qprintf("Trying to resume from %s\n", resumedev); |
1384 | |
1385 | if (mkpathbyspec(resumedev, "/dev/swsuspresume") == 0) |
1386 | resumedev = strdup("/dev/swsuspresume"); |
1387 | |
1388 | if (access(resumedev, R_OK)) { |
1389 | eprintf("Unable to access resume device (%s)\n", resumedev); |
1390 | return 1; |
1391 | } |
1392 | |
1393 | if ((fd = open(resumedev, O_RDONLY)) < 0) |
1394 | return 1; |
1395 | if (lseek(fd, getpagesize() - 10, SEEK_SET) != getpagesize() - 10) |
1396 | return 1; |
1397 | if (read(fd, &buf, 6) != 6) |
1398 | return 1; |
1399 | if (strncmp(buf, "S1SUSP", 6) && strncmp(buf, "S2SUSP", 6)) { |
1400 | qprintf("No suspend signature on swap, not resuming.\n"); |
1401 | return 1; |
1402 | } |
1403 | |
1404 | if (fstat(fd, &sb)) |
1405 | return 1; |
1406 | close(fd); |
1407 | |
1408 | printf("Resuming from %s.\n", resumedev); |
1409 | fflush(stdout); |
1410 | fd = open("/sys/power/resume", O_WRONLY); |
1411 | memset(buf, '\0', 20); |
1412 | snprintf(buf, 20, "%d:%d", major(sb.st_rdev), minor(sb.st_rdev)); |
1413 | write(fd, buf, 20); |
1414 | close(fd); |
1415 | |
1416 | eprintf("Resume failed. Continuing with normal startup.\n"); |
1417 | return 0; |
1418 | } |
1419 | |
1420 | static int |
1421 | mkrootdevCommand(char *cmd, char *end) |
1422 | { |
1423 | char *chptr = NULL, *root; |
1424 | int i, devNum; |
1425 | FILE *fstab; |
1426 | struct mntent mnt = { |
1427 | .mnt_fsname = "/dev/root", |
1428 | .mnt_dir = "/sysroot", |
1429 | .mnt_type = NULL, |
1430 | .mnt_opts = NULL, |
1431 | .mnt_freq = 0, |
1432 | .mnt_passno = 0 |
1433 | }; |
1434 | |
1435 | root = getKernelArg("root"); |
1436 | if (root) { |
1437 | char c; |
1438 | chptr = root; |
1439 | while (*chptr && !isspace(*chptr)) |
1440 | chptr++; |
1441 | c = *chptr; |
1442 | *chptr = '\0'; |
1443 | root = strdupa(root); |
1444 | *chptr = c; |
1445 | chptr = NULL; |
1446 | } |
1447 | |
1448 | i = 0; |
1449 | while ((cmd = getArg(cmd, end, &chptr))) { |
1450 | if (!strcmp(chptr, "-t")) { |
1451 | cmd = getArg(cmd, end, &mnt.mnt_type); |
1452 | if (!cmd) { |
1453 | eprintf("mkrootdev: expected fs type\n"); |
1454 | return 1; |
1455 | } |
1456 | } else if (!strcmp(chptr, "-o")) { |
1457 | cmd = getArg(cmd, end, &mnt.mnt_opts); |
1458 | if (!cmd) { |
1459 | eprintf("mkrootdev: expected device name\n"); |
1460 | return 1; |
1461 | } |
1462 | } else if (root) { |
1463 | if (i) { |
1464 | eprintf("mkrootdev: unexpected arguments\n"); |
1465 | eprintf("cmd: %p end: %p\n", cmd, end); |
1466 | eprintf("cmd: %s\n", cmd); |
1467 | return 1; |
1468 | } |
1469 | /* if we get here, we got root from the kernel command line, |
1470 | so we don't _really_ care that there wasn't one on the |
1471 | mkrootdev command line. */ |
1472 | i++; |
1473 | } else { |
1474 | root = chptr; |
1475 | i++; |
1476 | } |
1477 | } |
1478 | if (!root) { |
1479 | eprintf("mkrootdev: expected device name\n"); |
1480 | return 1; |
1481 | } |
1482 | |
1483 | if (!mnt.mnt_type) { |
1484 | eprintf("mkrootdev: expected fs type\n"); |
1485 | return 1; |
1486 | } |
1487 | if (!mnt.mnt_opts) { |
1488 | eprintf("mkrootdev: expected fs options\n"); |
1489 | return 1; |
1490 | } |
1491 | |
1492 | umask(0122); |
1493 | fstab = fopen("/fstab", "w+"); |
1494 | if (!fstab) { |
1495 | eprintf("mkrootdev: could not create fstab: %s\n", strerror(errno)); |
1496 | return 1; |
1497 | } |
1498 | addmntent(fstab, &mnt); |
1499 | fclose(fstab); |
1500 | |
1501 | if ((i = mkpathbyspec(root, "/dev/root")) != -1) |
1502 | return i; |
1503 | |
1504 | if (root) |
1505 | devNum = name_to_dev_t(root); |
1506 | |
1507 | if (smartmknod("/dev/root", S_IFBLK | 0700, devNum)) { |
1508 | eprintf("mkrootdev: mknod /dev/root 0x%08x failed: %s\n", devNum, |
1509 | strerror(errno)); |
1510 | return 1; |
1511 | } |
1512 | |
1513 | return 0; |
1514 | } |
1515 | |
1516 | static int |
1517 | mkdirCommand(char * cmd, char * end) |
1518 | { |
1519 | char * dir; |
1520 | int ignoreExists = 0; |
1521 | |
1522 | cmd = getArg(cmd, end, &dir); |
1523 | |
1524 | if (cmd && !strcmp(dir, "-p")) { |
1525 | ignoreExists = 1; |
1526 | cmd = getArg(cmd, end, &dir); |
1527 | } |
1528 | |
1529 | if (!cmd) { |
1530 | eprintf("mkdir: directory expected\n"); |
1531 | return 1; |
1532 | } |
1533 | |
1534 | if (mkdir(dir, 0755)) { |
1535 | if (!ignoreExists && errno == EEXIST) { |
1536 | eprintf("mkdir: failed to create %s: %s\n", dir, strerror(errno)); |
1537 | return 1; |
1538 | } |
1539 | } |
1540 | |
1541 | return 0; |
1542 | } |
1543 | |
1544 | static int |
1545 | accessCommand(char * cmd, char * end) |
1546 | { |
1547 | char * permStr; |
1548 | int perms = 0; |
1549 | char * file = NULL; |
1550 | |
1551 | cmd = getArg(cmd, end, &permStr); |
1552 | if (cmd) cmd = getArg(cmd, end, &file); |
1553 | |
1554 | if (!cmd || *permStr != '-') { |
1555 | eprintf("usage: access -[perm] file\n"); |
1556 | return 1; |
1557 | } |
1558 | |
1559 | permStr++; |
1560 | while (*permStr) { |
1561 | switch (*permStr) { |
1562 | case 'r': perms |= R_OK; break; |
1563 | case 'w': perms |= W_OK; break; |
1564 | case 'x': perms |= X_OK; break; |
1565 | case 'f': perms |= F_OK; break; |
1566 | default: |
1567 | eprintf("perms must be -[r][w][x][f]\n"); |
1568 | return 1; |
1569 | } |
1570 | |
1571 | permStr++; |
1572 | } |
1573 | |
1574 | if ((file == NULL) || (access(file, perms))) |
1575 | return 1; |
1576 | |
1577 | return 0; |
1578 | } |
1579 | |
1580 | static int |
1581 | sleepCommand(char * cmd, char * end) |
1582 | { |
1583 | char *delaystr; |
1584 | int delay; |
1585 | |
1586 | if (!(cmd = getArg(cmd, end, &delaystr))) { |
1587 | eprintf("sleep: delay expected\n"); |
1588 | return 1; |
1589 | } |
1590 | |
1591 | delay = atoi(delaystr); |
1592 | sleep(delay); |
1593 | |
1594 | return 0; |
1595 | } |
1596 | |
1597 | static int |
1598 | readlinkCommand(char * cmd, char * end) |
1599 | { |
1600 | char * path; |
1601 | char * buf, * respath, * fullpath; |
1602 | struct stat sb; |
1603 | int rc = 0; |
1604 | |
1605 | if (!(cmd = getArg(cmd, end, &path))) { |
1606 | eprintf("readlink: file expected\n"); |
1607 | return 1; |
1608 | } |
1609 | |
1610 | if (lstat(path, &sb) == -1) { |
1611 | eprintf("unable to stat %s: %s\n", path, strerror(errno)); |
1612 | return 1; |
1613 | } |
1614 | |
1615 | if (!S_ISLNK(sb.st_mode)) { |
1616 | printf("%s\n", path); |
1617 | return 0; |
1618 | } |
1619 | |
1620 | buf = calloc(512, sizeof (char)); |
1621 | if (readlink(path, buf, 512) == -1) { |
1622 | eprintf("error readlink %s: %s\n", path, strerror(errno)); |
1623 | free(buf); |
1624 | return 1; |
1625 | } |
1626 | |
1627 | /* symlink is absolute */ |
1628 | if (buf[0] == '/') { |
1629 | printf("%s\n", buf); |
1630 | free(buf); |
1631 | return 0; |
1632 | } |
1633 | |
1634 | /* nope, need to handle the relative symlink case too */ |
1635 | respath = strrchr(path, '/'); |
1636 | if (respath) { |
1637 | *respath = '\0'; |
1638 | } |
1639 | |
1640 | fullpath = calloc(512, sizeof (char)); |
1641 | /* and normalize it */ |
1642 | snprintf(fullpath, 512, "%s/%s", path, buf); |
1643 | respath = NULL; |
1644 | respath = canonicalize_file_name(fullpath); |
1645 | if (respath == NULL) { |
1646 | eprintf("error resolving symbolic link %s: %s\n", fullpath, |
1647 | strerror(errno)); |
1648 | rc = 1; |
1649 | goto readlinkout; |
1650 | } |
1651 | |
1652 | printf("%s\n", respath); |
1653 | free(respath); |
1654 | readlinkout: |
1655 | free(buf); |
1656 | free(fullpath); |
1657 | return rc; |
1658 | } |
1659 | |
1660 | static int |
1661 | doFind(char * dirName, char * name) |
1662 | { |
1663 | struct stat sb; |
1664 | DIR * dir; |
1665 | struct dirent * d; |
1666 | char * strBuf = alloca(strlen(dirName) + 1024); |
1667 | |
1668 | if (!(dir = opendir(dirName))) { |
1669 | eprintf("error opening %s: %s\n", dirName, strerror(errno)); |
1670 | return 0; |
1671 | } |
1672 | |
1673 | errno = 0; |
1674 | while ((d = readdir(dir))) { |
1675 | errno = 0; |
1676 | |
1677 | strcpy(strBuf, dirName); |
1678 | strcat(strBuf, "/"); |
1679 | strcat(strBuf, d->d_name); |
1680 | |
1681 | if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, "..")) { |
1682 | errno = 0; |
1683 | continue; |
1684 | } |
1685 | |
1686 | if (!name || !strcmp(d->d_name, name)) |
1687 | printf("%s\n", strBuf); |
1688 | |
1689 | if (lstat(strBuf, &sb)) { |
1690 | eprintf("failed to stat %s: %s\n", strBuf, strerror(errno)); |
1691 | errno = 0; |
1692 | continue; |
1693 | } |
1694 | |
1695 | if (S_ISDIR(sb.st_mode)) |
1696 | doFind(strBuf, name); |
1697 | } |
1698 | |
1699 | if (errno) { |
1700 | closedir(dir); |
1701 | eprintf("error reading from %s: %s\n", dirName, strerror(errno)); |
1702 | return 1; |
1703 | } |
1704 | |
1705 | closedir(dir); |
1706 | |
1707 | return 0; |
1708 | } |
1709 | |
1710 | static int |
1711 | findCommand(char * cmd, char * end) |
1712 | { |
1713 | char * dir; |
1714 | char * name = NULL; |
1715 | |
1716 | cmd = getArg(cmd, end, &dir); |
1717 | if (cmd) cmd = getArg(cmd, end, &name); |
1718 | if (cmd) { |
1719 | if (strcmp(name, "-name")) { |
1720 | eprintf("usage: find [path] -name [file]\n"); |
1721 | return 1; |
1722 | } |
1723 | if (cmd) cmd = getArg(cmd, end, &name); |
1724 | if (!cmd && !name) { |
1725 | eprintf("usage: find [path] -name [file]\n"); |
1726 | return 1; |
1727 | } |
1728 | } |
1729 | |
1730 | return doFind(dir, name); |
1731 | } |
1732 | |
1733 | static int |
1734 | findlodevCommand(char * cmd, char * end) |
1735 | { |
1736 | char devName[20]; |
1737 | int devNum; |
1738 | int fd; |
1739 | struct loop_info loopInfo; |
1740 | char separator[2] = ""; |
1741 | |
1742 | if (*end != '\n') { |
1743 | eprintf("usage: findlodev\n"); |
1744 | return 1; |
1745 | } |
1746 | |
1747 | if (!access("/dev/.devfsd", X_OK)) |
1748 | strcpy(separator, "/"); |
1749 | |
1750 | for (devNum = 0; devNum < 256; devNum++) { |
1751 | sprintf(devName, "/dev/loop%s%d", separator, devNum); |
1752 | if ((fd = open(devName, O_RDONLY)) < 0) |
1753 | return 0; |
1754 | |
1755 | if (ioctl(fd, LOOP_GET_STATUS, &loopInfo)) { |
1756 | close(fd); |
1757 | printf("%s\n", devName); |
1758 | return 0; |
1759 | } |
1760 | |
1761 | close(fd); |
1762 | } |
1763 | |
1764 | return 0; |
1765 | } |
1766 | |
1767 | static int |
1768 | mknodCommand(char * cmd, char * end) |
1769 | { |
1770 | char * path, * type; |
1771 | char * majorStr, * minorStr; |
1772 | int major; |
1773 | int minor; |
1774 | char * chptr; |
1775 | mode_t mode; |
1776 | |
1777 | cmd = getArg(cmd, end, &path); |
1778 | cmd = getArg(cmd, end, &type); |
1779 | cmd = getArg(cmd, end, &majorStr); |
1780 | cmd = getArg(cmd, end, &minorStr); |
1781 | if (!minorStr) { |
1782 | eprintf("mknod: usage mknod <path> [c|b] <major> <minor>\n"); |
1783 | return 1; |
1784 | } |
1785 | |
1786 | if (!strcmp(type, "b")) { |
1787 | mode = S_IFBLK; |
1788 | } else if (!strcmp(type, "c")) { |
1789 | mode = S_IFCHR; |
1790 | } else { |
1791 | eprintf("mknod: invalid type\n"); |
1792 | return 1; |
1793 | } |
1794 | |
1795 | major = strtol(majorStr, &chptr, 10); |
1796 | if (*chptr) { |
1797 | eprintf("invalid major number\n"); |
1798 | return 1; |
1799 | } |
1800 | |
1801 | minor = strtol(minorStr, &chptr, 10); |
1802 | if (*chptr) { |
1803 | eprintf("invalid minor number\n"); |
1804 | return 1; |
1805 | } |
1806 | |
1807 | if (smartmknod(path, mode | 0600, makedev(major, minor))) { |
1808 | eprintf("mknod: failed to create %s: %s\n", path, strerror(errno)); |
1809 | return 1; |
1810 | } |
1811 | |
1812 | return 0; |
1813 | } |
1814 | |
1815 | static int |
1816 | getDevNumFromProc(char * file, char * device) |
1817 | { |
1818 | char buf[32768], line[4096]; |
1819 | char * start, *end; |
1820 | int num; |
1821 | int fd; |
1822 | |
1823 | if ((fd = open(file, O_RDONLY)) == -1) { |
1824 | eprintf("can't open file %s: %s\n", file, strerror(errno)); |
1825 | return -1; |
1826 | } |
1827 | |
1828 | num = read(fd, buf, sizeof(buf)); |
1829 | if (num < 1) { |
1830 | close(fd); |
1831 | eprintf("failed to read %s: %s\n", file, strerror(errno)); |
1832 | return -1; |
1833 | } |
1834 | buf[num] = '\0'; |
1835 | close(fd); |
1836 | |
1837 | start = buf; |
1838 | end = strchr(start, '\n'); |
1839 | while (start && end) { |
1840 | *end++ = '\0'; |
1841 | if ((sscanf(start, "%d %s", &num, line)) == 2) { |
1842 | if (!strncmp(device, line, strlen(device))) |
1843 | return num; |
1844 | } |
1845 | start = end; |
1846 | end = strchr(start, '\n'); |
1847 | } |
1848 | return -1; |
1849 | } |
1850 | |
1851 | static int |
1852 | mkDMNodCommand(char * cmd, char * end) |
1853 | { |
1854 | int major = getDevNumFromProc("/proc/devices", "misc"); |
1855 | int minor = getDevNumFromProc("/proc/misc", "device-mapper"); |
1856 | |
1857 | if ((major == -1) || (minor == -1)) { |
1858 | eprintf("Unable to find device-mapper major/minor\n"); |
1859 | return 1; |
1860 | } |
1861 | |
1862 | if (!access("/dev/mapper/control", R_OK)) { |
1863 | struct stat sb; |
1864 | if (stat("/dev/mapper/control", &sb) == 0) { |
1865 | if (S_ISCHR(sb.st_mode) && (sb.st_rdev == makedev(major, minor))) |
1866 | return 0; |
1867 | } |
1868 | |
1869 | unlink("/dev/mapper/control"); |
1870 | } |
1871 | |
1872 | if (smartmknod("/dev/mapper/control", S_IFCHR | 0600, |
1873 | makedev(major, minor))) { |
1874 | eprintf("failed to create /dev/mapper/control\n"); |
1875 | return 1; |
1876 | } |
1877 | |
1878 | return 0; |
1879 | } |
1880 | |
1881 | static int |
1882 | parse_sysfs_devnum(const char *path, dev_t *dev) |
1883 | { |
1884 | char *first = NULL, *second; |
1885 | int major, minor; |
1886 | int fd, len = strlen(path); |
1887 | char devname[len + 5]; |
1888 | |
1889 | sprintf(devname, "%s/dev", path); |
1890 | fd = open(devname, O_RDONLY); |
1891 | if (fd < 0) { |
1892 | #if 0 |
1893 | eprintf("open on %s failed: %s\n", devname, strerror(errno)); |
1894 | #endif |
1895 | return -1; |
1896 | } |
1897 | |
1898 | len = readFD(fd, &first); |
1899 | |
1900 | close(fd); |
1901 | |
1902 | second = strchr(first, ':'); |
1903 | *second++ = '\0'; |
1904 | |
1905 | errno = 0; |
1906 | major = strtol(first, NULL, 10); |
1907 | |
1908 | errno = 0; |
1909 | minor = strtol(second, NULL, 10); |
1910 | free(first); |
1911 | |
1912 | *dev = makedev(major, minor); |
1913 | return 0; |
1914 | } |
1915 | |
1916 | static void |
1917 | sysfs_blkdev_probe(const char *dirname, const char *name) |
1918 | { |
1919 | char *path = NULL, *devpath = NULL; |
1920 | dev_t dev = 0; |
1921 | int ret; |
1922 | DIR *dir; |
1923 | struct dirent *dent; |
1924 | |
1925 | asprintf(&path, "%s/%s", dirname, name); |
1926 | #if 0 |
1927 | qprintf("Testing %s for block device.\n", path); |
1928 | #endif |
1929 | |
1930 | ret = parse_sysfs_devnum(path, &dev); |
1931 | if (ret < 0) { |
1932 | free(path); |
1933 | return; |
1934 | } |
1935 | |
1936 | asprintf(&devpath, "/dev/%s", name); |
1937 | |
1938 | smartmknod(devpath, S_IFBLK | 0700, dev); |
1939 | free(devpath); |
1940 | |
1941 | dir = opendir(path); |
1942 | if (dir == NULL) { |
1943 | free(path); |
1944 | return; |
1945 | } |
1946 | |
1947 | for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { |
1948 | if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, "..")) |
1949 | continue; |
1950 | |
1951 | sysfs_blkdev_probe(path, dent->d_name); |
1952 | } |
1953 | free(path); |
1954 | } |
1955 | |
1956 | static int |
1957 | mkblkdevsCommand(char * cmd, char * end) |
1958 | { |
1959 | DIR *dir; |
1960 | struct dirent *dent; |
1961 | |
1962 | if (cmd < end) { |
1963 | eprintf("mkblkdevs: unexpected arguments\n"); |
1964 | return 1; |
1965 | } |
1966 | |
1967 | dir = opendir("/sys/block"); |
1968 | if (dir == NULL) |
1969 | return -1; |
1970 | |
1971 | for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { |
1972 | if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, "..")) |
1973 | continue; |
1974 | |
1975 | sysfs_blkdev_probe("/sys/block", dent->d_name); |
1976 | } |
1977 | return 1; |
1978 | } |
1979 | |
1980 | static int |
1981 | setQuietCommand(char * cmd, char * end) |
1982 | { |
1983 | char *quietcmd; |
1984 | |
1985 | quietcmd = getKernelArg("quiet"); |
1986 | if (quietcmd) |
1987 | reallyquiet = 1; |
1988 | |
1989 | quietcmd = getKernelArg("noquiet"); |
1990 | if (quietcmd) |
1991 | reallyquiet = 0; |
1992 | |
1993 | /* reallyquiet may be set elsewhere */ |
1994 | if (reallyquiet) |
1995 | quiet = 1; |
1996 | |
1997 | return 0; |
1998 | } |
1999 | |
2000 | struct commandHandler { |
2001 | char *name; |
2002 | int (*fp)(char *cmd, char *end); |
2003 | }; |
2004 | |
2005 | static const struct commandHandler handlers[] = { |
2006 | { "mount", mountCommand }, |
2007 | { "losetup", losetupCommand }, |
2008 | { "echo", echoCommand }, |
2009 | { "raidautorun", raidautorunCommand }, |
2010 | { "umount", umountCommand }, |
2011 | { "exec", execCommand }, |
2012 | { "mkdir", mkdirCommand }, |
2013 | { "access", accessCommand }, |
2014 | { "find", findCommand }, |
2015 | { "findlodev", findlodevCommand }, |
2016 | { "showlabels", display_uuid_cache }, |
2017 | { "sleep", sleepCommand }, |
2018 | { "mknod", mknodCommand }, |
2019 | { "mkdmnod", mkDMNodCommand }, |
2020 | { "readlink", readlinkCommand }, |
2021 | { "setquiet", setQuietCommand }, |
2022 | { "ln", lnCommand }, |
2023 | { "mkblkdevs", mkblkdevsCommand }, |
2024 | { "resume", resumeCommand }, |
2025 | { "mkrootdev", mkrootdevCommand }, |
2026 | { "setuproot", setuprootCommand }, |
2027 | { "switchroot", switchrootCommand }, |
2028 | #ifdef DEBUG |
2029 | { "cat", catCommand }, |
2030 | { "ls", lsCommand }, |
2031 | #endif |
2032 | { NULL, }, |
2033 | }; |
2034 | |
2035 | static const struct commandHandler * |
2036 | getCommandHandler(const char *name) |
2037 | { |
2038 | const struct commandHandler *handler = NULL; |
2039 | |
2040 | for (handler = &handlers[0]; handler->name; handler++) |
2041 | if (!strncmp(name, handler->name, strlen(handler->name))) |
2042 | return handler; |
2043 | return handler; |
2044 | } |
2045 | |
2046 | static int |
2047 | runStartup(int fd, char *name) |
2048 | { |
2049 | char *contents; |
2050 | int i; |
2051 | char * start, * end; |
2052 | char * chptr; |
2053 | int rc; |
2054 | const struct commandHandler *handler; |
2055 | |
2056 | i = readFD(fd, &contents); |
2057 | |
2058 | if (i < 0) { |
2059 | eprintf("Failed to read startup file %s", name); |
2060 | return 1; |
2061 | } |
2062 | close(fd); |
2063 | |
2064 | start = contents; |
2065 | while (*start) { |
2066 | while (isspace(*start) && *start && (*start != '\n')) start++; |
2067 | |
2068 | if (*start == '#') |
2069 | while (*start && (*start != '\n')) start++; |
2070 | |
2071 | if (*start == '\n') { |
2072 | start++; |
2073 | continue; |
2074 | } |
2075 | |
2076 | if (!*start) { |
2077 | eprintf("(last line in %s is empty)\n", name); |
2078 | continue; |
2079 | } |
2080 | |
2081 | /* start points to the beginning of the command */ |
2082 | end = start + 1; |
2083 | while (*end && (*end != '\n')) end++; |
2084 | if (!*end) { |
2085 | eprintf("(last line in %s missing newline -- skipping)\n", name); |
2086 | start = end; |
2087 | continue; |
2088 | } |
2089 | |
2090 | /* end points to the \n at the end of the command */ |
2091 | |
2092 | chptr = start; |
2093 | while (chptr < end && !isspace(*chptr)) chptr++; |
2094 | |
2095 | i = 0; |
2096 | rc = 1; |
2097 | *(chptr++) = '\0'; |
2098 | if (strncmp(start, "nash-", 5)) { |
2099 | char *fullPath = NULL; |
2100 | rc = searchPath(start, &fullPath); |
2101 | if (rc >= 0) { |
2102 | rc = otherCommand(fullPath, chptr, end, 1); |
2103 | free(fullPath); |
2104 | } else |
2105 | i = 1; |
2106 | } else { |
2107 | start += 5; |
2108 | i = 1; |
2109 | } |
2110 | |
2111 | if (i == 1) { |
2112 | handler = getCommandHandler(start); |
2113 | if (handler->name != NULL) |
2114 | rc = (handler->fp)(chptr, end); |
2115 | } |
2116 | start = end + 1; |
2117 | } |
2118 | |
2119 | free(contents); |
2120 | return rc; |
2121 | } |
2122 | |
2123 | int main(int argc, char **argv) { |
2124 | int fd = 0; |
2125 | char * name; |
2126 | int rc; |
2127 | int force = 0; |
2128 | |
2129 | name = strrchr(argv[0], '/'); |
2130 | if (!name) |
2131 | name = argv[0]; |
2132 | else |
2133 | name++; |
2134 | |
2135 | if (!strcmp(name, "modprobe")) |
2136 | exit(0); |
2137 | if (!strcmp(name, "hotplug")) { |
2138 | argv[0] = strdup("/sbin/udev"); |
2139 | execv(argv[0], argv); |
2140 | eprintf("ERROR: exec of udev failed!\n"); |
2141 | exit(1); |
2142 | } |
2143 | |
2144 | testing = (getppid() != 0) && (getppid() != 1); |
2145 | argv++, argc--; |
2146 | |
2147 | while (argc && **argv == '-') { |
2148 | if (!strcmp(*argv, "--forcequiet")) { |
2149 | force = 1; |
2150 | quiet = 1; |
2151 | argv++, argc--; |
2152 | testing = 0; |
2153 | } else if (!strcmp(*argv, "--force")) { |
2154 | force = 1; |
2155 | argv++, argc--; |
2156 | testing = 0; |
2157 | } else if (!strcmp(*argv, "--quiet")) { |
2158 | quiet = 1; |
2159 | argv++, argc--; |
2160 | } else if (!strcmp(*argv, "--reallyquiet")) { |
2161 | reallyquiet = 1; |
2162 | argv++, argc--; |
2163 | } else { |
2164 | eprintf("unknown argument %s\n", *argv); |
2165 | return 1; |
2166 | } |
2167 | } |
2168 | |
2169 | if (force) |
2170 | qprintf("(forcing normal run)\n"); |
2171 | |
2172 | if (testing) |
2173 | qprintf("(running in test mode).\n"); |
2174 | |
2175 | qprintf("Red Hat nash version %s starting\n", VERSION); |
2176 | |
2177 | if (*argv) { |
2178 | fd = open(*argv, O_RDONLY, 0); |
2179 | if (fd < 0) { |
2180 | eprintf("nash: cannot open %s: %s\n", *argv, strerror(errno)); |
2181 | exit(1); |
2182 | } |
2183 | } |
2184 | |
2185 | /* runStartup closes fd */ |
2186 | rc = runStartup(fd, *argv); |
2187 | |
2188 | return rc; |
2189 | } |