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Commit | Line | Data |
---|---|---|
c67e5382 HS |
1 | /* |
2 | * Many of the syscalls used in this file expect some of the arguments | |
3 | * to be __user pointers not __kernel pointers. To limit the sparse | |
4 | * noise, turn off sparse checking for this file. | |
5 | */ | |
6 | #ifdef __CHECKER__ | |
7 | #undef __CHECKER__ | |
8 | #warning "Sparse checking disabled for this file" | |
9 | #endif | |
10 | ||
1da177e4 LT |
11 | #include <linux/module.h> |
12 | #include <linux/sched.h> | |
13 | #include <linux/ctype.h> | |
14 | #include <linux/fd.h> | |
15 | #include <linux/tty.h> | |
16 | #include <linux/suspend.h> | |
17 | #include <linux/root_dev.h> | |
18 | #include <linux/security.h> | |
19 | #include <linux/delay.h> | |
dd2a345f | 20 | #include <linux/genhd.h> |
d53d9f16 | 21 | #include <linux/mount.h> |
d779249e | 22 | #include <linux/device.h> |
46595390 | 23 | #include <linux/init.h> |
011e3fcd | 24 | #include <linux/fs.h> |
82c8253a | 25 | #include <linux/initrd.h> |
22a9d645 | 26 | #include <linux/async.h> |
5ad4e53b | 27 | #include <linux/fs_struct.h> |
5a0e3ad6 | 28 | #include <linux/slab.h> |
1da177e4 LT |
29 | |
30 | #include <linux/nfs_fs.h> | |
31 | #include <linux/nfs_fs_sb.h> | |
32 | #include <linux/nfs_mount.h> | |
33 | ||
34 | #include "do_mounts.h" | |
35 | ||
1da177e4 LT |
36 | int __initdata rd_doload; /* 1 = load RAM disk, 0 = don't load */ |
37 | ||
9b04c997 | 38 | int root_mountflags = MS_RDONLY | MS_SILENT; |
f56f6d30 | 39 | static char * __initdata root_device_name; |
1da177e4 | 40 | static char __initdata saved_root_name[64]; |
79975f13 | 41 | static int root_wait; |
1da177e4 | 42 | |
1da177e4 LT |
43 | dev_t ROOT_DEV; |
44 | ||
1da177e4 LT |
45 | static int __init load_ramdisk(char *str) |
46 | { | |
47 | rd_doload = simple_strtol(str,NULL,0) & 3; | |
48 | return 1; | |
49 | } | |
50 | __setup("load_ramdisk=", load_ramdisk); | |
51 | ||
52 | static int __init readonly(char *str) | |
53 | { | |
54 | if (*str) | |
55 | return 0; | |
56 | root_mountflags |= MS_RDONLY; | |
57 | return 1; | |
58 | } | |
59 | ||
60 | static int __init readwrite(char *str) | |
61 | { | |
62 | if (*str) | |
63 | return 0; | |
64 | root_mountflags &= ~MS_RDONLY; | |
65 | return 1; | |
66 | } | |
67 | ||
68 | __setup("ro", readonly); | |
69 | __setup("rw", readwrite); | |
70 | ||
6d0aed7a | 71 | #ifdef CONFIG_BLOCK |
1ad7e899 SW |
72 | struct uuidcmp { |
73 | const char *uuid; | |
74 | int len; | |
75 | }; | |
76 | ||
b5af921e WD |
77 | /** |
78 | * match_dev_by_uuid - callback for finding a partition using its uuid | |
79 | * @dev: device passed in by the caller | |
1ad7e899 | 80 | * @data: opaque pointer to the desired struct uuidcmp to match |
b5af921e WD |
81 | * |
82 | * Returns 1 if the device matches, and 0 otherwise. | |
83 | */ | |
38b6f45a | 84 | static int match_dev_by_uuid(struct device *dev, void *data) |
b5af921e | 85 | { |
1ad7e899 | 86 | struct uuidcmp *cmp = data; |
b5af921e WD |
87 | struct hd_struct *part = dev_to_part(dev); |
88 | ||
89 | if (!part->info) | |
90 | goto no_match; | |
91 | ||
1ad7e899 SW |
92 | if (strncasecmp(cmp->uuid, part->info->uuid, cmp->len)) |
93 | goto no_match; | |
b5af921e WD |
94 | |
95 | return 1; | |
96 | no_match: | |
97 | return 0; | |
98 | } | |
99 | ||
100 | ||
101 | /** | |
102 | * devt_from_partuuid - looks up the dev_t of a partition by its UUID | |
1ad7e899 | 103 | * @uuid: char array containing ascii UUID |
b5af921e WD |
104 | * |
105 | * The function will return the first partition which contains a matching | |
106 | * UUID value in its partition_meta_info struct. This does not search | |
107 | * by filesystem UUIDs. | |
108 | * | |
79975f13 WD |
109 | * If @uuid is followed by a "/PARTNROFF=%d", then the number will be |
110 | * extracted and used as an offset from the partition identified by the UUID. | |
111 | * | |
b5af921e WD |
112 | * Returns the matching dev_t on success or 0 on failure. |
113 | */ | |
1ad7e899 | 114 | static dev_t devt_from_partuuid(const char *uuid_str) |
b5af921e WD |
115 | { |
116 | dev_t res = 0; | |
1ad7e899 | 117 | struct uuidcmp cmp; |
b5af921e | 118 | struct device *dev = NULL; |
79975f13 WD |
119 | struct gendisk *disk; |
120 | struct hd_struct *part; | |
121 | int offset = 0; | |
122 | ||
123 | if (strlen(uuid_str) < 36) | |
124 | goto done; | |
125 | ||
1ad7e899 SW |
126 | cmp.uuid = uuid_str; |
127 | cmp.len = 36; | |
128 | ||
79975f13 WD |
129 | /* Check for optional partition number offset attributes. */ |
130 | if (uuid_str[36]) { | |
131 | char c = 0; | |
132 | /* Explicitly fail on poor PARTUUID syntax. */ | |
133 | if (sscanf(&uuid_str[36], | |
134 | "/PARTNROFF=%d%c", &offset, &c) != 1) { | |
135 | printk(KERN_ERR "VFS: PARTUUID= is invalid.\n" | |
136 | "Expected PARTUUID=<valid-uuid-id>[/PARTNROFF=%%d]\n"); | |
137 | if (root_wait) | |
138 | printk(KERN_ERR | |
139 | "Disabling rootwait; root= is invalid.\n"); | |
140 | root_wait = 0; | |
141 | goto done; | |
142 | } | |
143 | } | |
b5af921e | 144 | |
1ad7e899 SW |
145 | dev = class_find_device(&block_class, NULL, &cmp, |
146 | &match_dev_by_uuid); | |
b5af921e WD |
147 | if (!dev) |
148 | goto done; | |
149 | ||
150 | res = dev->devt; | |
b5af921e | 151 | |
79975f13 WD |
152 | /* Attempt to find the partition by offset. */ |
153 | if (!offset) | |
154 | goto no_offset; | |
155 | ||
156 | res = 0; | |
157 | disk = part_to_disk(dev_to_part(dev)); | |
158 | part = disk_get_part(disk, dev_to_part(dev)->partno + offset); | |
159 | if (part) { | |
160 | res = part_devt(part); | |
161 | put_device(part_to_dev(part)); | |
162 | } | |
163 | ||
164 | no_offset: | |
165 | put_device(dev); | |
b5af921e WD |
166 | done: |
167 | return res; | |
168 | } | |
6d0aed7a | 169 | #endif |
b5af921e | 170 | |
1da177e4 LT |
171 | /* |
172 | * Convert a name into device number. We accept the following variants: | |
173 | * | |
174 | * 1) device number in hexadecimal represents itself | |
175 | * 2) /dev/nfs represents Root_NFS (0xff) | |
176 | * 3) /dev/<disk_name> represents the device number of disk | |
177 | * 4) /dev/<disk_name><decimal> represents the device number | |
178 | * of partition - device number of disk plus the partition number | |
179 | * 5) /dev/<disk_name>p<decimal> - same as the above, that form is | |
180 | * used when disk name of partitioned disk ends on a digit. | |
b5af921e WD |
181 | * 6) PARTUUID=00112233-4455-6677-8899-AABBCCDDEEFF representing the |
182 | * unique id of a partition if the partition table provides it. | |
79975f13 WD |
183 | * 7) PARTUUID=<UUID>/PARTNROFF=<int> to select a partition in relation to |
184 | * a partition with a known unique id. | |
1da177e4 | 185 | * |
edfaa7c3 KS |
186 | * If name doesn't have fall into the categories above, we return (0,0). |
187 | * block_class is used to check if something is a disk name. If the disk | |
188 | * name contains slashes, the device name has them replaced with | |
189 | * bangs. | |
1da177e4 LT |
190 | */ |
191 | ||
192 | dev_t name_to_dev_t(char *name) | |
193 | { | |
194 | char s[32]; | |
195 | char *p; | |
196 | dev_t res = 0; | |
30f2f0eb | 197 | int part; |
1da177e4 | 198 | |
6d0aed7a | 199 | #ifdef CONFIG_BLOCK |
b5af921e WD |
200 | if (strncmp(name, "PARTUUID=", 9) == 0) { |
201 | name += 9; | |
b5af921e WD |
202 | res = devt_from_partuuid(name); |
203 | if (!res) | |
204 | goto fail; | |
205 | goto done; | |
206 | } | |
6d0aed7a | 207 | #endif |
b5af921e | 208 | |
1da177e4 LT |
209 | if (strncmp(name, "/dev/", 5) != 0) { |
210 | unsigned maj, min; | |
211 | ||
212 | if (sscanf(name, "%u:%u", &maj, &min) == 2) { | |
213 | res = MKDEV(maj, min); | |
214 | if (maj != MAJOR(res) || min != MINOR(res)) | |
215 | goto fail; | |
216 | } else { | |
217 | res = new_decode_dev(simple_strtoul(name, &p, 16)); | |
218 | if (*p) | |
219 | goto fail; | |
220 | } | |
221 | goto done; | |
222 | } | |
edfaa7c3 | 223 | |
1da177e4 LT |
224 | name += 5; |
225 | res = Root_NFS; | |
226 | if (strcmp(name, "nfs") == 0) | |
227 | goto done; | |
228 | res = Root_RAM0; | |
229 | if (strcmp(name, "ram") == 0) | |
230 | goto done; | |
231 | ||
232 | if (strlen(name) > 31) | |
233 | goto fail; | |
234 | strcpy(s, name); | |
235 | for (p = s; *p; p++) | |
236 | if (*p == '/') | |
237 | *p = '!'; | |
30f2f0eb KS |
238 | res = blk_lookup_devt(s, 0); |
239 | if (res) | |
240 | goto done; | |
241 | ||
242 | /* | |
25985edc | 243 | * try non-existent, but valid partition, which may only exist |
30f2f0eb KS |
244 | * after revalidating the disk, like partitioned md devices |
245 | */ | |
246 | while (p > s && isdigit(p[-1])) | |
247 | p--; | |
248 | if (p == s || !*p || *p == '0') | |
249 | goto fail; | |
250 | ||
251 | /* try disk name without <part number> */ | |
252 | part = simple_strtoul(p, NULL, 10); | |
253 | *p = '\0'; | |
254 | res = blk_lookup_devt(s, part); | |
255 | if (res) | |
256 | goto done; | |
257 | ||
258 | /* try disk name without p<part number> */ | |
259 | if (p < s + 2 || !isdigit(p[-2]) || p[-1] != 'p') | |
260 | goto fail; | |
261 | p[-1] = '\0'; | |
262 | res = blk_lookup_devt(s, part); | |
1da177e4 LT |
263 | if (res) |
264 | goto done; | |
265 | ||
edfaa7c3 KS |
266 | fail: |
267 | return 0; | |
1da177e4 | 268 | done: |
1da177e4 | 269 | return res; |
1da177e4 LT |
270 | } |
271 | ||
272 | static int __init root_dev_setup(char *line) | |
273 | { | |
274 | strlcpy(saved_root_name, line, sizeof(saved_root_name)); | |
275 | return 1; | |
276 | } | |
277 | ||
278 | __setup("root=", root_dev_setup); | |
279 | ||
cc1ed754 PO |
280 | static int __init rootwait_setup(char *str) |
281 | { | |
282 | if (*str) | |
283 | return 0; | |
284 | root_wait = 1; | |
285 | return 1; | |
286 | } | |
287 | ||
288 | __setup("rootwait", rootwait_setup); | |
289 | ||
1da177e4 LT |
290 | static char * __initdata root_mount_data; |
291 | static int __init root_data_setup(char *str) | |
292 | { | |
293 | root_mount_data = str; | |
294 | return 1; | |
295 | } | |
296 | ||
297 | static char * __initdata root_fs_names; | |
298 | static int __init fs_names_setup(char *str) | |
299 | { | |
300 | root_fs_names = str; | |
301 | return 1; | |
302 | } | |
303 | ||
304 | static unsigned int __initdata root_delay; | |
305 | static int __init root_delay_setup(char *str) | |
306 | { | |
307 | root_delay = simple_strtoul(str, NULL, 0); | |
308 | return 1; | |
309 | } | |
310 | ||
311 | __setup("rootflags=", root_data_setup); | |
312 | __setup("rootfstype=", fs_names_setup); | |
313 | __setup("rootdelay=", root_delay_setup); | |
314 | ||
315 | static void __init get_fs_names(char *page) | |
316 | { | |
317 | char *s = page; | |
318 | ||
319 | if (root_fs_names) { | |
320 | strcpy(page, root_fs_names); | |
321 | while (*s++) { | |
322 | if (s[-1] == ',') | |
323 | s[-1] = '\0'; | |
324 | } | |
325 | } else { | |
326 | int len = get_filesystem_list(page); | |
327 | char *p, *next; | |
328 | ||
329 | page[len] = '\0'; | |
330 | for (p = page-1; p; p = next) { | |
331 | next = strchr(++p, '\n'); | |
332 | if (*p++ != '\t') | |
333 | continue; | |
334 | while ((*s++ = *p++) != '\n') | |
335 | ; | |
336 | s[-1] = '\0'; | |
337 | } | |
338 | } | |
339 | *s = '\0'; | |
340 | } | |
341 | ||
342 | static int __init do_mount_root(char *name, char *fs, int flags, void *data) | |
343 | { | |
d8c9584e | 344 | struct super_block *s; |
1da177e4 LT |
345 | int err = sys_mount(name, "/root", fs, flags, data); |
346 | if (err) | |
347 | return err; | |
348 | ||
c67e5382 | 349 | sys_chdir("/root"); |
d8c9584e AV |
350 | s = current->fs->pwd.dentry->d_sb; |
351 | ROOT_DEV = s->s_dev; | |
80cdc6da MSB |
352 | printk(KERN_INFO |
353 | "VFS: Mounted root (%s filesystem)%s on device %u:%u.\n", | |
d8c9584e AV |
354 | s->s_type->name, |
355 | s->s_flags & MS_RDONLY ? " readonly" : "", | |
356 | MAJOR(ROOT_DEV), MINOR(ROOT_DEV)); | |
1da177e4 LT |
357 | return 0; |
358 | } | |
359 | ||
360 | void __init mount_block_root(char *name, int flags) | |
361 | { | |
a608ca21 JL |
362 | struct page *page = alloc_page(GFP_KERNEL | |
363 | __GFP_NOTRACK_FALSE_POSITIVE); | |
364 | char *fs_names = page_address(page); | |
1da177e4 | 365 | char *p; |
9361401e | 366 | #ifdef CONFIG_BLOCK |
1da177e4 | 367 | char b[BDEVNAME_SIZE]; |
9361401e DH |
368 | #else |
369 | const char *b = name; | |
370 | #endif | |
1da177e4 LT |
371 | |
372 | get_fs_names(fs_names); | |
373 | retry: | |
374 | for (p = fs_names; *p; p += strlen(p)+1) { | |
375 | int err = do_mount_root(name, p, flags, root_mount_data); | |
376 | switch (err) { | |
377 | case 0: | |
378 | goto out; | |
379 | case -EACCES: | |
380 | flags |= MS_RDONLY; | |
381 | goto retry; | |
382 | case -EINVAL: | |
383 | continue; | |
384 | } | |
385 | /* | |
386 | * Allow the user to distinguish between failed sys_open | |
387 | * and bad superblock on root device. | |
dd2a345f | 388 | * and give them a list of the available devices |
1da177e4 | 389 | */ |
9361401e | 390 | #ifdef CONFIG_BLOCK |
1da177e4 | 391 | __bdevname(ROOT_DEV, b); |
9361401e | 392 | #endif |
0e0cb892 BW |
393 | printk("VFS: Cannot open root device \"%s\" or %s: error %d\n", |
394 | root_device_name, b, err); | |
dd2a345f | 395 | printk("Please append a correct \"root=\" boot option; here are the available partitions:\n"); |
1da177e4 | 396 | |
dd2a345f | 397 | printk_all_partitions(); |
55dc7db7 TH |
398 | #ifdef CONFIG_DEBUG_BLOCK_EXT_DEVT |
399 | printk("DEBUG_BLOCK_EXT_DEVT is enabled, you need to specify " | |
400 | "explicit textual name for \"root=\" boot option.\n"); | |
401 | #endif | |
1da177e4 LT |
402 | panic("VFS: Unable to mount root fs on %s", b); |
403 | } | |
be6e028b | 404 | |
dd2a345f DG |
405 | printk("List of all partitions:\n"); |
406 | printk_all_partitions(); | |
be6e028b AW |
407 | printk("No filesystem could mount root, tried: "); |
408 | for (p = fs_names; *p; p += strlen(p)+1) | |
409 | printk(" %s", p); | |
410 | printk("\n"); | |
9361401e DH |
411 | #ifdef CONFIG_BLOCK |
412 | __bdevname(ROOT_DEV, b); | |
413 | #endif | |
414 | panic("VFS: Unable to mount root fs on %s", b); | |
1da177e4 | 415 | out: |
a608ca21 | 416 | put_page(page); |
1da177e4 LT |
417 | } |
418 | ||
419 | #ifdef CONFIG_ROOT_NFS | |
43717c7d CL |
420 | |
421 | #define NFSROOT_TIMEOUT_MIN 5 | |
422 | #define NFSROOT_TIMEOUT_MAX 30 | |
423 | #define NFSROOT_RETRY_MAX 5 | |
424 | ||
1da177e4 LT |
425 | static int __init mount_nfs_root(void) |
426 | { | |
56463e50 | 427 | char *root_dev, *root_data; |
43717c7d CL |
428 | unsigned int timeout; |
429 | int try, err; | |
1da177e4 | 430 | |
43717c7d CL |
431 | err = nfs_root_data(&root_dev, &root_data); |
432 | if (err != 0) | |
56463e50 | 433 | return 0; |
43717c7d CL |
434 | |
435 | /* | |
436 | * The server or network may not be ready, so try several | |
437 | * times. Stop after a few tries in case the client wants | |
438 | * to fall back to other boot methods. | |
439 | */ | |
440 | timeout = NFSROOT_TIMEOUT_MIN; | |
441 | for (try = 1; ; try++) { | |
442 | err = do_mount_root(root_dev, "nfs", | |
443 | root_mountflags, root_data); | |
444 | if (err == 0) | |
445 | return 1; | |
446 | if (try > NFSROOT_RETRY_MAX) | |
447 | break; | |
448 | ||
449 | /* Wait, in case the server refused us immediately */ | |
450 | ssleep(timeout); | |
451 | timeout <<= 1; | |
452 | if (timeout > NFSROOT_TIMEOUT_MAX) | |
453 | timeout = NFSROOT_TIMEOUT_MAX; | |
454 | } | |
455 | return 0; | |
1da177e4 LT |
456 | } |
457 | #endif | |
458 | ||
459 | #if defined(CONFIG_BLK_DEV_RAM) || defined(CONFIG_BLK_DEV_FD) | |
460 | void __init change_floppy(char *fmt, ...) | |
461 | { | |
462 | struct termios termios; | |
463 | char buf[80]; | |
464 | char c; | |
465 | int fd; | |
466 | va_list args; | |
467 | va_start(args, fmt); | |
468 | vsprintf(buf, fmt, args); | |
469 | va_end(args); | |
470 | fd = sys_open("/dev/root", O_RDWR | O_NDELAY, 0); | |
471 | if (fd >= 0) { | |
472 | sys_ioctl(fd, FDEJECT, 0); | |
473 | sys_close(fd); | |
474 | } | |
475 | printk(KERN_NOTICE "VFS: Insert %s and press ENTER\n", buf); | |
476 | fd = sys_open("/dev/console", O_RDWR, 0); | |
477 | if (fd >= 0) { | |
478 | sys_ioctl(fd, TCGETS, (long)&termios); | |
479 | termios.c_lflag &= ~ICANON; | |
480 | sys_ioctl(fd, TCSETSF, (long)&termios); | |
481 | sys_read(fd, &c, 1); | |
482 | termios.c_lflag |= ICANON; | |
483 | sys_ioctl(fd, TCSETSF, (long)&termios); | |
484 | sys_close(fd); | |
485 | } | |
486 | } | |
487 | #endif | |
488 | ||
489 | void __init mount_root(void) | |
490 | { | |
491 | #ifdef CONFIG_ROOT_NFS | |
377485f6 | 492 | if (ROOT_DEV == Root_NFS) { |
1da177e4 LT |
493 | if (mount_nfs_root()) |
494 | return; | |
495 | ||
496 | printk(KERN_ERR "VFS: Unable to mount root fs via NFS, trying floppy.\n"); | |
497 | ROOT_DEV = Root_FD0; | |
498 | } | |
499 | #endif | |
500 | #ifdef CONFIG_BLK_DEV_FD | |
501 | if (MAJOR(ROOT_DEV) == FLOPPY_MAJOR) { | |
502 | /* rd_doload is 2 for a dual initrd/ramload setup */ | |
503 | if (rd_doload==2) { | |
504 | if (rd_load_disk(1)) { | |
505 | ROOT_DEV = Root_RAM1; | |
506 | root_device_name = NULL; | |
507 | } | |
508 | } else | |
509 | change_floppy("root floppy"); | |
510 | } | |
511 | #endif | |
9361401e | 512 | #ifdef CONFIG_BLOCK |
bdaf8529 | 513 | create_dev("/dev/root", ROOT_DEV); |
1da177e4 | 514 | mount_block_root("/dev/root", root_mountflags); |
9361401e | 515 | #endif |
1da177e4 LT |
516 | } |
517 | ||
518 | /* | |
519 | * Prepare the namespace - decide what/where to mount, load ramdisks, etc. | |
520 | */ | |
521 | void __init prepare_namespace(void) | |
522 | { | |
523 | int is_floppy; | |
524 | ||
1da177e4 LT |
525 | if (root_delay) { |
526 | printk(KERN_INFO "Waiting %dsec before mounting root device...\n", | |
527 | root_delay); | |
528 | ssleep(root_delay); | |
529 | } | |
530 | ||
216773a7 AV |
531 | /* |
532 | * wait for the known devices to complete their probing | |
533 | * | |
534 | * Note: this is a potential source of long boot delays. | |
535 | * For example, it is not atypical to wait 5 seconds here | |
536 | * for the touchpad of a laptop to initialize. | |
537 | */ | |
538 | wait_for_device_probe(); | |
d779249e | 539 | |
1da177e4 LT |
540 | md_run_setup(); |
541 | ||
542 | if (saved_root_name[0]) { | |
543 | root_device_name = saved_root_name; | |
2d62f488 AH |
544 | if (!strncmp(root_device_name, "mtd", 3) || |
545 | !strncmp(root_device_name, "ubi", 3)) { | |
e9482b43 JE |
546 | mount_block_root(root_device_name, root_mountflags); |
547 | goto out; | |
548 | } | |
1da177e4 LT |
549 | ROOT_DEV = name_to_dev_t(root_device_name); |
550 | if (strncmp(root_device_name, "/dev/", 5) == 0) | |
551 | root_device_name += 5; | |
552 | } | |
553 | ||
1da177e4 LT |
554 | if (initrd_load()) |
555 | goto out; | |
556 | ||
cc1ed754 PO |
557 | /* wait for any asynchronous scanning to complete */ |
558 | if ((ROOT_DEV == 0) && root_wait) { | |
559 | printk(KERN_INFO "Waiting for root device %s...\n", | |
560 | saved_root_name); | |
561 | while (driver_probe_done() != 0 || | |
562 | (ROOT_DEV = name_to_dev_t(saved_root_name)) == 0) | |
563 | msleep(100); | |
216773a7 | 564 | async_synchronize_full(); |
cc1ed754 PO |
565 | } |
566 | ||
567 | is_floppy = MAJOR(ROOT_DEV) == FLOPPY_MAJOR; | |
568 | ||
1da177e4 LT |
569 | if (is_floppy && rd_doload && rd_load_disk(0)) |
570 | ROOT_DEV = Root_RAM0; | |
571 | ||
572 | mount_root(); | |
573 | out: | |
2b2af54a | 574 | devtmpfs_mount("dev"); |
1da177e4 | 575 | sys_mount(".", "/", NULL, MS_MOVE, NULL); |
c67e5382 | 576 | sys_chroot("."); |
1da177e4 | 577 | } |