Blame view
init/do_mounts.c
14.6 KB
c67e5382f init: disable spa... |
1 2 3 4 5 6 7 8 9 |
/* * Many of the syscalls used in this file expect some of the arguments * to be __user pointers not __kernel pointers. To limit the sparse * noise, turn off sparse checking for this file. */ #ifdef __CHECKER__ #undef __CHECKER__ #warning "Sparse checking disabled for this file" #endif |
1da177e4c Linux-2.6.12-rc2 |
10 11 12 13 14 15 16 17 18 |
#include <linux/module.h> #include <linux/sched.h> #include <linux/ctype.h> #include <linux/fd.h> #include <linux/tty.h> #include <linux/suspend.h> #include <linux/root_dev.h> #include <linux/security.h> #include <linux/delay.h> |
dd2a345f8 Display all possi... |
19 |
#include <linux/genhd.h> |
d53d9f16e [PATCH] name_to_d... |
20 |
#include <linux/mount.h> |
d779249ed Driver Core: add ... |
21 |
#include <linux/device.h> |
46595390e init/do_mounts.c:... |
22 |
#include <linux/init.h> |
011e3fcd1 proper prototype ... |
23 |
#include <linux/fs.h> |
82c8253ac init/do_mounts.c ... |
24 |
#include <linux/initrd.h> |
22a9d6456 async: Asynchrono... |
25 |
#include <linux/async.h> |
5ad4e53bd Get rid of indire... |
26 |
#include <linux/fs_struct.h> |
5a0e3ad6a include cleanup: ... |
27 |
#include <linux/slab.h> |
57f150a58 initmpfs: move ro... |
28 |
#include <linux/ramfs.h> |
16203a7a9 initmpfs: make ro... |
29 |
#include <linux/shmem_fs.h> |
1da177e4c Linux-2.6.12-rc2 |
30 31 32 33 34 35 |
#include <linux/nfs_fs.h> #include <linux/nfs_fs_sb.h> #include <linux/nfs_mount.h> #include "do_mounts.h" |
1da177e4c Linux-2.6.12-rc2 |
36 |
int __initdata rd_doload; /* 1 = load RAM disk, 0 = don't load */ |
9b04c997b [PATCH] vfs: MS_V... |
37 |
int root_mountflags = MS_RDONLY | MS_SILENT; |
f56f6d30c make init/do_moun... |
38 |
static char * __initdata root_device_name; |
1da177e4c Linux-2.6.12-rc2 |
39 |
static char __initdata saved_root_name[64]; |
79975f132 init: add root=PA... |
40 |
static int root_wait; |
1da177e4c Linux-2.6.12-rc2 |
41 |
|
1da177e4c Linux-2.6.12-rc2 |
42 |
dev_t ROOT_DEV; |
1da177e4c Linux-2.6.12-rc2 |
43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 |
static int __init load_ramdisk(char *str) { rd_doload = simple_strtol(str,NULL,0) & 3; return 1; } __setup("load_ramdisk=", load_ramdisk); static int __init readonly(char *str) { if (*str) return 0; root_mountflags |= MS_RDONLY; return 1; } static int __init readwrite(char *str) { if (*str) return 0; root_mountflags &= ~MS_RDONLY; return 1; } __setup("ro", readonly); __setup("rw", readwrite); |
6d0aed7a3 do_mounts: only e... |
68 |
#ifdef CONFIG_BLOCK |
1ad7e8994 block: store part... |
69 70 71 72 |
struct uuidcmp { const char *uuid; int len; }; |
b5af921ec init: add support... |
73 74 75 |
/** * match_dev_by_uuid - callback for finding a partition using its uuid * @dev: device passed in by the caller |
1ad7e8994 block: store part... |
76 |
* @data: opaque pointer to the desired struct uuidcmp to match |
b5af921ec init: add support... |
77 78 79 |
* * Returns 1 if the device matches, and 0 otherwise. */ |
9f3b795a6 driver-core: cons... |
80 |
static int match_dev_by_uuid(struct device *dev, const void *data) |
b5af921ec init: add support... |
81 |
{ |
9f3b795a6 driver-core: cons... |
82 |
const struct uuidcmp *cmp = data; |
b5af921ec init: add support... |
83 84 85 86 |
struct hd_struct *part = dev_to_part(dev); if (!part->info) goto no_match; |
1ad7e8994 block: store part... |
87 88 |
if (strncasecmp(cmp->uuid, part->info->uuid, cmp->len)) goto no_match; |
b5af921ec init: add support... |
89 90 91 92 93 94 95 96 97 |
return 1; no_match: return 0; } /** * devt_from_partuuid - looks up the dev_t of a partition by its UUID |
a68b31080 init/do_mounts.c:... |
98 |
* @uuid_str: char array containing ascii UUID |
b5af921ec init: add support... |
99 100 101 102 103 |
* * The function will return the first partition which contains a matching * UUID value in its partition_meta_info struct. This does not search * by filesystem UUIDs. * |
a68b31080 init/do_mounts.c:... |
104 |
* If @uuid_str is followed by a "/PARTNROFF=%d", then the number will be |
79975f132 init: add root=PA... |
105 106 |
* extracted and used as an offset from the partition identified by the UUID. * |
b5af921ec init: add support... |
107 108 |
* Returns the matching dev_t on success or 0 on failure. */ |
1ad7e8994 block: store part... |
109 |
static dev_t devt_from_partuuid(const char *uuid_str) |
b5af921ec init: add support... |
110 111 |
{ dev_t res = 0; |
1ad7e8994 block: store part... |
112 |
struct uuidcmp cmp; |
b5af921ec init: add support... |
113 |
struct device *dev = NULL; |
79975f132 init: add root=PA... |
114 115 116 |
struct gendisk *disk; struct hd_struct *part; int offset = 0; |
283f8fc03 init: reduce PART... |
117 118 |
bool clear_root_wait = false; char *slash; |
79975f132 init: add root=PA... |
119 |
|
1ad7e8994 block: store part... |
120 |
cmp.uuid = uuid_str; |
1ad7e8994 block: store part... |
121 |
|
283f8fc03 init: reduce PART... |
122 |
slash = strchr(uuid_str, '/'); |
79975f132 init: add root=PA... |
123 |
/* Check for optional partition number offset attributes. */ |
283f8fc03 init: reduce PART... |
124 |
if (slash) { |
79975f132 init: add root=PA... |
125 126 |
char c = 0; /* Explicitly fail on poor PARTUUID syntax. */ |
283f8fc03 init: reduce PART... |
127 128 129 |
if (sscanf(slash + 1, "PARTNROFF=%d%c", &offset, &c) != 1) { clear_root_wait = true; |
79975f132 init: add root=PA... |
130 131 |
goto done; } |
283f8fc03 init: reduce PART... |
132 133 134 135 136 137 138 139 |
cmp.len = slash - uuid_str; } else { cmp.len = strlen(uuid_str); } if (!cmp.len) { clear_root_wait = true; goto done; |
79975f132 init: add root=PA... |
140 |
} |
b5af921ec init: add support... |
141 |
|
1ad7e8994 block: store part... |
142 143 |
dev = class_find_device(&block_class, NULL, &cmp, &match_dev_by_uuid); |
b5af921ec init: add support... |
144 145 146 147 |
if (!dev) goto done; res = dev->devt; |
b5af921ec init: add support... |
148 |
|
79975f132 init: add root=PA... |
149 150 151 152 153 154 155 156 157 158 159 160 161 162 |
/* Attempt to find the partition by offset. */ if (!offset) goto no_offset; res = 0; disk = part_to_disk(dev_to_part(dev)); part = disk_get_part(disk, dev_to_part(dev)->partno + offset); if (part) { res = part_devt(part); put_device(part_to_dev(part)); } no_offset: put_device(dev); |
b5af921ec init: add support... |
163 |
done: |
283f8fc03 init: reduce PART... |
164 165 166 167 168 169 170 171 172 173 |
if (clear_root_wait) { pr_err("VFS: PARTUUID= is invalid. " "Expected PARTUUID=<valid-uuid-id>[/PARTNROFF=%%d] "); if (root_wait) pr_err("Disabling rootwait; root= is invalid. "); root_wait = 0; } |
b5af921ec init: add support... |
174 175 |
return res; } |
6d0aed7a3 do_mounts: only e... |
176 |
#endif |
b5af921ec init: add support... |
177 |
|
1da177e4c Linux-2.6.12-rc2 |
178 179 180 |
/* * Convert a name into device number. We accept the following variants: * |
0bf37ae4c init/do_mounts: b... |
181 182 |
* 1) <hex_major><hex_minor> device number in hexadecimal represents itself * no leading 0x, for example b302. |
1da177e4c Linux-2.6.12-rc2 |
183 184 185 186 187 188 |
* 2) /dev/nfs represents Root_NFS (0xff) * 3) /dev/<disk_name> represents the device number of disk * 4) /dev/<disk_name><decimal> represents the device number * of partition - device number of disk plus the partition number * 5) /dev/<disk_name>p<decimal> - same as the above, that form is * used when disk name of partitioned disk ends on a digit. |
b5af921ec init: add support... |
189 190 |
* 6) PARTUUID=00112233-4455-6677-8899-AABBCCDDEEFF representing the * unique id of a partition if the partition table provides it. |
d33b98fc8 block: partition:... |
191 192 193 194 |
* The UUID may be either an EFI/GPT UUID, or refer to an MSDOS * partition using the format SSSSSSSS-PP, where SSSSSSSS is a zero- * filled hex representation of the 32-bit "NT disk signature", and PP * is a zero-filled hex representation of the 1-based partition number. |
79975f132 init: add root=PA... |
195 196 |
* 7) PARTUUID=<UUID>/PARTNROFF=<int> to select a partition in relation to * a partition with a known unique id. |
6c251611c init/do_mounts.c:... |
197 198 |
* 8) <major>:<minor> major and minor number of the device separated by * a colon. |
1da177e4c Linux-2.6.12-rc2 |
199 |
* |
edfaa7c36 Driver core: conv... |
200 201 202 203 |
* If name doesn't have fall into the categories above, we return (0,0). * block_class is used to check if something is a disk name. If the disk * name contains slashes, the device name has them replaced with * bangs. |
1da177e4c Linux-2.6.12-rc2 |
204 |
*/ |
e6e20a7a5 init: export name... |
205 |
dev_t name_to_dev_t(const char *name) |
1da177e4c Linux-2.6.12-rc2 |
206 207 208 209 |
{ char s[32]; char *p; dev_t res = 0; |
30f2f0eb4 block: do_mounts ... |
210 |
int part; |
1da177e4c Linux-2.6.12-rc2 |
211 |
|
6d0aed7a3 do_mounts: only e... |
212 |
#ifdef CONFIG_BLOCK |
b5af921ec init: add support... |
213 214 |
if (strncmp(name, "PARTUUID=", 9) == 0) { name += 9; |
b5af921ec init: add support... |
215 216 217 218 219 |
res = devt_from_partuuid(name); if (!res) goto fail; goto done; } |
6d0aed7a3 do_mounts: only e... |
220 |
#endif |
b5af921ec init: add support... |
221 |
|
1da177e4c Linux-2.6.12-rc2 |
222 |
if (strncmp(name, "/dev/", 5) != 0) { |
cb31ef485 init: fix regress... |
223 |
unsigned maj, min, offset; |
283e7ad02 init: stricter ch... |
224 |
char dummy; |
1da177e4c Linux-2.6.12-rc2 |
225 |
|
cb31ef485 init: fix regress... |
226 227 |
if ((sscanf(name, "%u:%u%c", &maj, &min, &dummy) == 2) || (sscanf(name, "%u:%u:%u:%c", &maj, &min, &offset, &dummy) == 3)) { |
1da177e4c Linux-2.6.12-rc2 |
228 229 230 231 232 233 234 235 236 237 |
res = MKDEV(maj, min); if (maj != MAJOR(res) || min != MINOR(res)) goto fail; } else { res = new_decode_dev(simple_strtoul(name, &p, 16)); if (*p) goto fail; } goto done; } |
edfaa7c36 Driver core: conv... |
238 |
|
1da177e4c Linux-2.6.12-rc2 |
239 240 241 242 243 244 245 246 247 248 249 250 251 252 |
name += 5; res = Root_NFS; if (strcmp(name, "nfs") == 0) goto done; res = Root_RAM0; if (strcmp(name, "ram") == 0) goto done; if (strlen(name) > 31) goto fail; strcpy(s, name); for (p = s; *p; p++) if (*p == '/') *p = '!'; |
30f2f0eb4 block: do_mounts ... |
253 254 255 256 257 |
res = blk_lookup_devt(s, 0); if (res) goto done; /* |
25985edce Fix common misspe... |
258 |
* try non-existent, but valid partition, which may only exist |
30f2f0eb4 block: do_mounts ... |
259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 |
* after revalidating the disk, like partitioned md devices */ while (p > s && isdigit(p[-1])) p--; if (p == s || !*p || *p == '0') goto fail; /* try disk name without <part number> */ part = simple_strtoul(p, NULL, 10); *p = '\0'; res = blk_lookup_devt(s, part); if (res) goto done; /* try disk name without p<part number> */ if (p < s + 2 || !isdigit(p[-2]) || p[-1] != 'p') goto fail; p[-1] = '\0'; res = blk_lookup_devt(s, part); |
1da177e4c Linux-2.6.12-rc2 |
278 279 |
if (res) goto done; |
edfaa7c36 Driver core: conv... |
280 281 |
fail: return 0; |
1da177e4c Linux-2.6.12-rc2 |
282 |
done: |
1da177e4c Linux-2.6.12-rc2 |
283 |
return res; |
1da177e4c Linux-2.6.12-rc2 |
284 |
} |
e6e20a7a5 init: export name... |
285 |
EXPORT_SYMBOL_GPL(name_to_dev_t); |
1da177e4c Linux-2.6.12-rc2 |
286 287 288 289 290 291 292 293 |
static int __init root_dev_setup(char *line) { strlcpy(saved_root_name, line, sizeof(saved_root_name)); return 1; } __setup("root=", root_dev_setup); |
cc1ed7542 init: wait for as... |
294 295 296 297 298 299 300 301 302 |
static int __init rootwait_setup(char *str) { if (*str) return 0; root_wait = 1; return 1; } __setup("rootwait", rootwait_setup); |
1da177e4c Linux-2.6.12-rc2 |
303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 |
static char * __initdata root_mount_data; static int __init root_data_setup(char *str) { root_mount_data = str; return 1; } static char * __initdata root_fs_names; static int __init fs_names_setup(char *str) { root_fs_names = str; return 1; } static unsigned int __initdata root_delay; static int __init root_delay_setup(char *str) { root_delay = simple_strtoul(str, NULL, 0); return 1; } __setup("rootflags=", root_data_setup); __setup("rootfstype=", fs_names_setup); __setup("rootdelay=", root_delay_setup); static void __init get_fs_names(char *page) { char *s = page; if (root_fs_names) { strcpy(page, root_fs_names); while (*s++) { if (s[-1] == ',') s[-1] = '\0'; } } else { int len = get_filesystem_list(page); char *p, *next; page[len] = '\0'; for (p = page-1; p; p = next) { next = strchr(++p, ' '); if (*p++ != '\t') continue; while ((*s++ = *p++) != ' ') ; s[-1] = '\0'; } } *s = '\0'; } static int __init do_mount_root(char *name, char *fs, int flags, void *data) { |
d8c9584ea vfs: prefer ->den... |
359 |
struct super_block *s; |
1da177e4c Linux-2.6.12-rc2 |
360 361 362 |
int err = sys_mount(name, "/root", fs, flags, data); if (err) return err; |
c67e5382f init: disable spa... |
363 |
sys_chdir("/root"); |
d8c9584ea vfs: prefer ->den... |
364 365 |
s = current->fs->pwd.dentry->d_sb; ROOT_DEV = s->s_dev; |
80cdc6dae fs: use appropria... |
366 367 368 |
printk(KERN_INFO "VFS: Mounted root (%s filesystem)%s on device %u:%u. ", |
d8c9584ea vfs: prefer ->den... |
369 370 371 |
s->s_type->name, s->s_flags & MS_RDONLY ? " readonly" : "", MAJOR(ROOT_DEV), MINOR(ROOT_DEV)); |
1da177e4c Linux-2.6.12-rc2 |
372 373 374 375 376 |
return 0; } void __init mount_block_root(char *name, int flags) { |
a608ca21f vfs: allocate pag... |
377 378 379 |
struct page *page = alloc_page(GFP_KERNEL | __GFP_NOTRACK_FALSE_POSITIVE); char *fs_names = page_address(page); |
1da177e4c Linux-2.6.12-rc2 |
380 |
char *p; |
9361401eb [PATCH] BLOCK: Ma... |
381 |
#ifdef CONFIG_BLOCK |
1da177e4c Linux-2.6.12-rc2 |
382 |
char b[BDEVNAME_SIZE]; |
9361401eb [PATCH] BLOCK: Ma... |
383 384 385 |
#else const char *b = name; #endif |
1da177e4c Linux-2.6.12-rc2 |
386 387 388 389 390 391 392 393 394 |
get_fs_names(fs_names); retry: for (p = fs_names; *p; p += strlen(p)+1) { int err = do_mount_root(name, p, flags, root_mount_data); switch (err) { case 0: goto out; case -EACCES: |
1da177e4c Linux-2.6.12-rc2 |
395 396 397 398 399 400 |
case -EINVAL: continue; } /* * Allow the user to distinguish between failed sys_open * and bad superblock on root device. |
dd2a345f8 Display all possi... |
401 |
* and give them a list of the available devices |
1da177e4c Linux-2.6.12-rc2 |
402 |
*/ |
9361401eb [PATCH] BLOCK: Ma... |
403 |
#ifdef CONFIG_BLOCK |
1da177e4c Linux-2.6.12-rc2 |
404 |
__bdevname(ROOT_DEV, b); |
9361401eb [PATCH] BLOCK: Ma... |
405 |
#endif |
0e0cb892a init/do_mounts.c:... |
406 407 408 |
printk("VFS: Cannot open root device \"%s\" or %s: error %d ", root_device_name, b, err); |
dd2a345f8 Display all possi... |
409 410 |
printk("Please append a correct \"root=\" boot option; here are the available partitions: "); |
1da177e4c Linux-2.6.12-rc2 |
411 |
|
dd2a345f8 Display all possi... |
412 |
printk_all_partitions(); |
55dc7db70 init: DEBUG_BLOCK... |
413 414 415 416 417 |
#ifdef CONFIG_DEBUG_BLOCK_EXT_DEVT printk("DEBUG_BLOCK_EXT_DEVT is enabled, you need to specify " "explicit textual name for \"root=\" boot option. "); #endif |
1da177e4c Linux-2.6.12-rc2 |
418 419 |
panic("VFS: Unable to mount root fs on %s", b); } |
10975933d init: fix read-wr... |
420 421 422 423 |
if (!(flags & MS_RDONLY)) { flags |= MS_RDONLY; goto retry; } |
be6e028b6 [PATCH] root moun... |
424 |
|
dd2a345f8 Display all possi... |
425 426 427 |
printk("List of all partitions: "); printk_all_partitions(); |
be6e028b6 [PATCH] root moun... |
428 429 430 431 432 |
printk("No filesystem could mount root, tried: "); for (p = fs_names; *p; p += strlen(p)+1) printk(" %s", p); printk(" "); |
9361401eb [PATCH] BLOCK: Ma... |
433 434 435 436 |
#ifdef CONFIG_BLOCK __bdevname(ROOT_DEV, b); #endif panic("VFS: Unable to mount root fs on %s", b); |
1da177e4c Linux-2.6.12-rc2 |
437 |
out: |
a608ca21f vfs: allocate pag... |
438 |
put_page(page); |
1da177e4c Linux-2.6.12-rc2 |
439 440 441 |
} #ifdef CONFIG_ROOT_NFS |
43717c7da NFS: Retry mounti... |
442 443 444 445 |
#define NFSROOT_TIMEOUT_MIN 5 #define NFSROOT_TIMEOUT_MAX 30 #define NFSROOT_RETRY_MAX 5 |
1da177e4c Linux-2.6.12-rc2 |
446 447 |
static int __init mount_nfs_root(void) { |
56463e50d NFS: Use super.c ... |
448 |
char *root_dev, *root_data; |
43717c7da NFS: Retry mounti... |
449 450 |
unsigned int timeout; int try, err; |
1da177e4c Linux-2.6.12-rc2 |
451 |
|
43717c7da NFS: Retry mounti... |
452 453 |
err = nfs_root_data(&root_dev, &root_data); if (err != 0) |
56463e50d NFS: Use super.c ... |
454 |
return 0; |
43717c7da NFS: Retry mounti... |
455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 |
/* * The server or network may not be ready, so try several * times. Stop after a few tries in case the client wants * to fall back to other boot methods. */ timeout = NFSROOT_TIMEOUT_MIN; for (try = 1; ; try++) { err = do_mount_root(root_dev, "nfs", root_mountflags, root_data); if (err == 0) return 1; if (try > NFSROOT_RETRY_MAX) break; /* Wait, in case the server refused us immediately */ ssleep(timeout); timeout <<= 1; if (timeout > NFSROOT_TIMEOUT_MAX) timeout = NFSROOT_TIMEOUT_MAX; } return 0; |
1da177e4c Linux-2.6.12-rc2 |
477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 |
} #endif #if defined(CONFIG_BLK_DEV_RAM) || defined(CONFIG_BLK_DEV_FD) void __init change_floppy(char *fmt, ...) { struct termios termios; char buf[80]; char c; int fd; va_list args; va_start(args, fmt); vsprintf(buf, fmt, args); va_end(args); fd = sys_open("/dev/root", O_RDWR | O_NDELAY, 0); if (fd >= 0) { sys_ioctl(fd, FDEJECT, 0); sys_close(fd); } printk(KERN_NOTICE "VFS: Insert %s and press ENTER ", buf); fd = sys_open("/dev/console", O_RDWR, 0); if (fd >= 0) { sys_ioctl(fd, TCGETS, (long)&termios); termios.c_lflag &= ~ICANON; sys_ioctl(fd, TCSETSF, (long)&termios); sys_read(fd, &c, 1); termios.c_lflag |= ICANON; sys_ioctl(fd, TCSETSF, (long)&termios); sys_close(fd); } } #endif void __init mount_root(void) { #ifdef CONFIG_ROOT_NFS |
377485f62 init: don't try m... |
514 |
if (ROOT_DEV == Root_NFS) { |
1da177e4c Linux-2.6.12-rc2 |
515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 |
if (mount_nfs_root()) return; printk(KERN_ERR "VFS: Unable to mount root fs via NFS, trying floppy. "); ROOT_DEV = Root_FD0; } #endif #ifdef CONFIG_BLK_DEV_FD if (MAJOR(ROOT_DEV) == FLOPPY_MAJOR) { /* rd_doload is 2 for a dual initrd/ramload setup */ if (rd_doload==2) { if (rd_load_disk(1)) { ROOT_DEV = Root_RAM1; root_device_name = NULL; } } else change_floppy("root floppy"); } #endif |
9361401eb [PATCH] BLOCK: Ma... |
535 |
#ifdef CONFIG_BLOCK |
c69e3c3a0 init/do_mounts.c:... |
536 537 538 539 540 541 542 543 |
{ int err = create_dev("/dev/root", ROOT_DEV); if (err < 0) pr_emerg("Failed to create /dev/root: %d ", err); mount_block_root("/dev/root", root_mountflags); } |
9361401eb [PATCH] BLOCK: Ma... |
544 |
#endif |
1da177e4c Linux-2.6.12-rc2 |
545 546 547 548 549 550 551 552 |
} /* * Prepare the namespace - decide what/where to mount, load ramdisks, etc. */ void __init prepare_namespace(void) { int is_floppy; |
1da177e4c Linux-2.6.12-rc2 |
553 |
if (root_delay) { |
ca75b4d87 insert missing sp... |
554 555 |
printk(KERN_INFO "Waiting %d sec before mounting root device... ", |
1da177e4c Linux-2.6.12-rc2 |
556 557 558 |
root_delay); ssleep(root_delay); } |
216773a78 Consolidate drive... |
559 560 561 562 563 564 565 566 |
/* * wait for the known devices to complete their probing * * Note: this is a potential source of long boot delays. * For example, it is not atypical to wait 5 seconds here * for the touchpad of a laptop to initialize. */ wait_for_device_probe(); |
d779249ed Driver Core: add ... |
567 |
|
1da177e4c Linux-2.6.12-rc2 |
568 569 570 571 |
md_run_setup(); if (saved_root_name[0]) { root_device_name = saved_root_name; |
2d62f4885 do_mounts: allow ... |
572 573 |
if (!strncmp(root_device_name, "mtd", 3) || !strncmp(root_device_name, "ubi", 3)) { |
e9482b437 [MTD] Allow alter... |
574 575 576 |
mount_block_root(root_device_name, root_mountflags); goto out; } |
1da177e4c Linux-2.6.12-rc2 |
577 578 579 580 |
ROOT_DEV = name_to_dev_t(root_device_name); if (strncmp(root_device_name, "/dev/", 5) == 0) root_device_name += 5; } |
1da177e4c Linux-2.6.12-rc2 |
581 582 |
if (initrd_load()) goto out; |
cc1ed7542 init: wait for as... |
583 584 585 586 587 588 589 |
/* wait for any asynchronous scanning to complete */ if ((ROOT_DEV == 0) && root_wait) { printk(KERN_INFO "Waiting for root device %s... ", saved_root_name); while (driver_probe_done() != 0 || (ROOT_DEV = name_to_dev_t(saved_root_name)) == 0) |
39a0e975c init: reduce root... |
590 |
msleep(5); |
216773a78 Consolidate drive... |
591 |
async_synchronize_full(); |
cc1ed7542 init: wait for as... |
592 593 594 |
} is_floppy = MAJOR(ROOT_DEV) == FLOPPY_MAJOR; |
1da177e4c Linux-2.6.12-rc2 |
595 596 597 598 599 |
if (is_floppy && rd_doload && rd_load_disk(0)) ROOT_DEV = Root_RAM0; mount_root(); out: |
2b2af54a5 Driver Core: devt... |
600 |
devtmpfs_mount("dev"); |
1da177e4c Linux-2.6.12-rc2 |
601 |
sys_mount(".", "/", NULL, MS_MOVE, NULL); |
c67e5382f init: disable spa... |
602 |
sys_chroot("."); |
1da177e4c Linux-2.6.12-rc2 |
603 |
} |
57f150a58 initmpfs: move ro... |
604 |
|
6e19eded3 initmpfs: use ini... |
605 |
static bool is_tmpfs; |
57f150a58 initmpfs: move ro... |
606 607 608 609 |
static struct dentry *rootfs_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) { static unsigned long once; |
6e19eded3 initmpfs: use ini... |
610 |
void *fill = ramfs_fill_super; |
57f150a58 initmpfs: move ro... |
611 612 613 |
if (test_and_set_bit(0, &once)) return ERR_PTR(-ENODEV); |
6e19eded3 initmpfs: use ini... |
614 615 616 617 |
if (IS_ENABLED(CONFIG_TMPFS) && is_tmpfs) fill = shmem_fill_super; return mount_nodev(fs_type, flags, data, fill); |
57f150a58 initmpfs: move ro... |
618 619 620 621 622 623 624 625 626 627 628 629 630 631 |
} static struct file_system_type rootfs_fs_type = { .name = "rootfs", .mount = rootfs_mount, .kill_sb = kill_litter_super, }; int __init init_rootfs(void) { int err = register_filesystem(&rootfs_fs_type); if (err) return err; |
6e19eded3 initmpfs: use ini... |
632 633 |
if (IS_ENABLED(CONFIG_TMPFS) && !saved_root_name[0] && (!root_fs_names || strstr(root_fs_names, "tmpfs"))) { |
16203a7a9 initmpfs: make ro... |
634 |
err = shmem_init(); |
6e19eded3 initmpfs: use ini... |
635 636 |
is_tmpfs = true; } else { |
16203a7a9 initmpfs: make ro... |
637 |
err = init_ramfs_fs(); |
6e19eded3 initmpfs: use ini... |
638 |
} |
16203a7a9 initmpfs: make ro... |
639 |
|
57f150a58 initmpfs: move ro... |
640 641 642 643 644 |
if (err) unregister_filesystem(&rootfs_fs_type); return err; } |