Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * fs/partitions/check.c | |
3 | * | |
4 | * Code extracted from drivers/block/genhd.c | |
5 | * Copyright (C) 1991-1998 Linus Torvalds | |
6 | * Re-organised Feb 1998 Russell King | |
7 | * | |
8 | * We now have independent partition support from the | |
9 | * block drivers, which allows all the partition code to | |
10 | * be grouped in one location, and it to be mostly self | |
11 | * contained. | |
12 | * | |
13 | * Added needed MAJORS for new pairs, {hdi,hdj}, {hdk,hdl} | |
14 | */ | |
15 | ||
16 | #include <linux/init.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/fs.h> | |
19 | #include <linux/kmod.h> | |
20 | #include <linux/ctype.h> | |
1da177e4 LT |
21 | |
22 | #include "check.h" | |
1da177e4 LT |
23 | |
24 | #include "acorn.h" | |
25 | #include "amiga.h" | |
26 | #include "atari.h" | |
27 | #include "ldm.h" | |
28 | #include "mac.h" | |
29 | #include "msdos.h" | |
30 | #include "osf.h" | |
31 | #include "sgi.h" | |
32 | #include "sun.h" | |
33 | #include "ibm.h" | |
34 | #include "ultrix.h" | |
35 | #include "efi.h" | |
0e6e1db4 | 36 | #include "karma.h" |
1da177e4 LT |
37 | |
38 | #ifdef CONFIG_BLK_DEV_MD | |
39 | extern void md_autodetect_dev(dev_t dev); | |
40 | #endif | |
41 | ||
42 | int warn_no_part = 1; /*This is ugly: should make genhd removable media aware*/ | |
43 | ||
44 | static int (*check_part[])(struct parsed_partitions *, struct block_device *) = { | |
45 | /* | |
46 | * Probe partition formats with tables at disk address 0 | |
47 | * that also have an ADFS boot block at 0xdc0. | |
48 | */ | |
49 | #ifdef CONFIG_ACORN_PARTITION_ICS | |
50 | adfspart_check_ICS, | |
51 | #endif | |
52 | #ifdef CONFIG_ACORN_PARTITION_POWERTEC | |
53 | adfspart_check_POWERTEC, | |
54 | #endif | |
55 | #ifdef CONFIG_ACORN_PARTITION_EESOX | |
56 | adfspart_check_EESOX, | |
57 | #endif | |
58 | ||
59 | /* | |
60 | * Now move on to formats that only have partition info at | |
61 | * disk address 0xdc0. Since these may also have stale | |
62 | * PC/BIOS partition tables, they need to come before | |
63 | * the msdos entry. | |
64 | */ | |
65 | #ifdef CONFIG_ACORN_PARTITION_CUMANA | |
66 | adfspart_check_CUMANA, | |
67 | #endif | |
68 | #ifdef CONFIG_ACORN_PARTITION_ADFS | |
69 | adfspart_check_ADFS, | |
70 | #endif | |
71 | ||
72 | #ifdef CONFIG_EFI_PARTITION | |
73 | efi_partition, /* this must come before msdos */ | |
74 | #endif | |
75 | #ifdef CONFIG_SGI_PARTITION | |
76 | sgi_partition, | |
77 | #endif | |
78 | #ifdef CONFIG_LDM_PARTITION | |
79 | ldm_partition, /* this must come before msdos */ | |
80 | #endif | |
1da177e4 LT |
81 | #ifdef CONFIG_MSDOS_PARTITION |
82 | msdos_partition, | |
83 | #endif | |
84 | #ifdef CONFIG_OSF_PARTITION | |
85 | osf_partition, | |
86 | #endif | |
87 | #ifdef CONFIG_SUN_PARTITION | |
88 | sun_partition, | |
89 | #endif | |
90 | #ifdef CONFIG_AMIGA_PARTITION | |
91 | amiga_partition, | |
92 | #endif | |
93 | #ifdef CONFIG_ATARI_PARTITION | |
94 | atari_partition, | |
95 | #endif | |
96 | #ifdef CONFIG_MAC_PARTITION | |
97 | mac_partition, | |
98 | #endif | |
99 | #ifdef CONFIG_ULTRIX_PARTITION | |
100 | ultrix_partition, | |
101 | #endif | |
102 | #ifdef CONFIG_IBM_PARTITION | |
103 | ibm_partition, | |
0e6e1db4 BC |
104 | #endif |
105 | #ifdef CONFIG_KARMA_PARTITION | |
106 | karma_partition, | |
1da177e4 LT |
107 | #endif |
108 | NULL | |
109 | }; | |
110 | ||
111 | /* | |
112 | * disk_name() is used by partition check code and the genhd driver. | |
113 | * It formats the devicename of the indicated disk into | |
114 | * the supplied buffer (of size at least 32), and returns | |
115 | * a pointer to that same buffer (for convenience). | |
116 | */ | |
117 | ||
118 | char *disk_name(struct gendisk *hd, int part, char *buf) | |
119 | { | |
120 | if (!part) | |
121 | snprintf(buf, BDEVNAME_SIZE, "%s", hd->disk_name); | |
122 | else if (isdigit(hd->disk_name[strlen(hd->disk_name)-1])) | |
123 | snprintf(buf, BDEVNAME_SIZE, "%sp%d", hd->disk_name, part); | |
124 | else | |
125 | snprintf(buf, BDEVNAME_SIZE, "%s%d", hd->disk_name, part); | |
126 | ||
127 | return buf; | |
128 | } | |
129 | ||
130 | const char *bdevname(struct block_device *bdev, char *buf) | |
131 | { | |
132 | int part = MINOR(bdev->bd_dev) - bdev->bd_disk->first_minor; | |
133 | return disk_name(bdev->bd_disk, part, buf); | |
134 | } | |
135 | ||
136 | EXPORT_SYMBOL(bdevname); | |
137 | ||
138 | /* | |
139 | * There's very little reason to use this, you should really | |
140 | * have a struct block_device just about everywhere and use | |
141 | * bdevname() instead. | |
142 | */ | |
143 | const char *__bdevname(dev_t dev, char *buffer) | |
144 | { | |
145 | scnprintf(buffer, BDEVNAME_SIZE, "unknown-block(%u,%u)", | |
146 | MAJOR(dev), MINOR(dev)); | |
147 | return buffer; | |
148 | } | |
149 | ||
150 | EXPORT_SYMBOL(__bdevname); | |
151 | ||
152 | static struct parsed_partitions * | |
153 | check_partition(struct gendisk *hd, struct block_device *bdev) | |
154 | { | |
155 | struct parsed_partitions *state; | |
57881dd9 | 156 | int i, res, err; |
1da177e4 LT |
157 | |
158 | state = kmalloc(sizeof(struct parsed_partitions), GFP_KERNEL); | |
159 | if (!state) | |
160 | return NULL; | |
161 | ||
a2964188 GKH |
162 | disk_name(hd, 0, state->name); |
163 | printk(KERN_INFO " %s:", state->name); | |
164 | if (isdigit(state->name[strlen(state->name)-1])) | |
1da177e4 | 165 | sprintf(state->name, "p"); |
a2964188 | 166 | |
1da177e4 | 167 | state->limit = hd->minors; |
57881dd9 | 168 | i = res = err = 0; |
1da177e4 LT |
169 | while (!res && check_part[i]) { |
170 | memset(&state->parts, 0, sizeof(state->parts)); | |
171 | res = check_part[i++](state, bdev); | |
57881dd9 S |
172 | if (res < 0) { |
173 | /* We have hit an I/O error which we don't report now. | |
174 | * But record it, and let the others do their job. | |
175 | */ | |
176 | err = res; | |
177 | res = 0; | |
178 | } | |
179 | ||
1da177e4 LT |
180 | } |
181 | if (res > 0) | |
182 | return state; | |
57881dd9 S |
183 | if (!err) |
184 | /* The partition is unrecognized. So report I/O errors if there were any */ | |
185 | res = err; | |
1da177e4 LT |
186 | if (!res) |
187 | printk(" unknown partition table\n"); | |
188 | else if (warn_no_part) | |
189 | printk(" unable to read partition table\n"); | |
190 | kfree(state); | |
5127d002 | 191 | return ERR_PTR(res); |
1da177e4 LT |
192 | } |
193 | ||
194 | /* | |
195 | * sysfs bindings for partitions | |
196 | */ | |
197 | ||
198 | struct part_attribute { | |
199 | struct attribute attr; | |
200 | ssize_t (*show)(struct hd_struct *,char *); | |
a7fd6706 | 201 | ssize_t (*store)(struct hd_struct *,const char *, size_t); |
1da177e4 LT |
202 | }; |
203 | ||
204 | static ssize_t | |
205 | part_attr_show(struct kobject * kobj, struct attribute * attr, char * page) | |
206 | { | |
207 | struct hd_struct * p = container_of(kobj,struct hd_struct,kobj); | |
208 | struct part_attribute * part_attr = container_of(attr,struct part_attribute,attr); | |
209 | ssize_t ret = 0; | |
210 | if (part_attr->show) | |
a7fd6706 KS |
211 | ret = part_attr->show(p, page); |
212 | return ret; | |
213 | } | |
214 | static ssize_t | |
215 | part_attr_store(struct kobject * kobj, struct attribute * attr, | |
216 | const char *page, size_t count) | |
217 | { | |
218 | struct hd_struct * p = container_of(kobj,struct hd_struct,kobj); | |
219 | struct part_attribute * part_attr = container_of(attr,struct part_attribute,attr); | |
220 | ssize_t ret = 0; | |
221 | ||
222 | if (part_attr->store) | |
223 | ret = part_attr->store(p, page, count); | |
1da177e4 LT |
224 | return ret; |
225 | } | |
226 | ||
227 | static struct sysfs_ops part_sysfs_ops = { | |
228 | .show = part_attr_show, | |
a7fd6706 | 229 | .store = part_attr_store, |
1da177e4 LT |
230 | }; |
231 | ||
a7fd6706 KS |
232 | static ssize_t part_uevent_store(struct hd_struct * p, |
233 | const char *page, size_t count) | |
234 | { | |
312c004d | 235 | kobject_uevent(&p->kobj, KOBJ_ADD); |
a7fd6706 KS |
236 | return count; |
237 | } | |
1da177e4 LT |
238 | static ssize_t part_dev_read(struct hd_struct * p, char *page) |
239 | { | |
240 | struct gendisk *disk = container_of(p->kobj.parent,struct gendisk,kobj); | |
241 | dev_t dev = MKDEV(disk->major, disk->first_minor + p->partno); | |
242 | return print_dev_t(page, dev); | |
243 | } | |
244 | static ssize_t part_start_read(struct hd_struct * p, char *page) | |
245 | { | |
246 | return sprintf(page, "%llu\n",(unsigned long long)p->start_sect); | |
247 | } | |
248 | static ssize_t part_size_read(struct hd_struct * p, char *page) | |
249 | { | |
250 | return sprintf(page, "%llu\n",(unsigned long long)p->nr_sects); | |
251 | } | |
252 | static ssize_t part_stat_read(struct hd_struct * p, char *page) | |
253 | { | |
254 | return sprintf(page, "%8u %8llu %8u %8llu\n", | |
a362357b JA |
255 | p->ios[0], (unsigned long long)p->sectors[0], |
256 | p->ios[1], (unsigned long long)p->sectors[1]); | |
1da177e4 | 257 | } |
a7fd6706 KS |
258 | static struct part_attribute part_attr_uevent = { |
259 | .attr = {.name = "uevent", .mode = S_IWUSR }, | |
260 | .store = part_uevent_store | |
261 | }; | |
1da177e4 LT |
262 | static struct part_attribute part_attr_dev = { |
263 | .attr = {.name = "dev", .mode = S_IRUGO }, | |
264 | .show = part_dev_read | |
265 | }; | |
266 | static struct part_attribute part_attr_start = { | |
267 | .attr = {.name = "start", .mode = S_IRUGO }, | |
268 | .show = part_start_read | |
269 | }; | |
270 | static struct part_attribute part_attr_size = { | |
271 | .attr = {.name = "size", .mode = S_IRUGO }, | |
272 | .show = part_size_read | |
273 | }; | |
274 | static struct part_attribute part_attr_stat = { | |
275 | .attr = {.name = "stat", .mode = S_IRUGO }, | |
276 | .show = part_stat_read | |
277 | }; | |
278 | ||
279 | static struct attribute * default_attrs[] = { | |
a7fd6706 | 280 | &part_attr_uevent.attr, |
1da177e4 LT |
281 | &part_attr_dev.attr, |
282 | &part_attr_start.attr, | |
283 | &part_attr_size.attr, | |
284 | &part_attr_stat.attr, | |
285 | NULL, | |
286 | }; | |
287 | ||
288 | extern struct subsystem block_subsys; | |
289 | ||
290 | static void part_release(struct kobject *kobj) | |
291 | { | |
292 | struct hd_struct * p = container_of(kobj,struct hd_struct,kobj); | |
293 | kfree(p); | |
294 | } | |
295 | ||
296 | struct kobj_type ktype_part = { | |
297 | .release = part_release, | |
298 | .default_attrs = default_attrs, | |
299 | .sysfs_ops = &part_sysfs_ops, | |
300 | }; | |
301 | ||
6a4d44c1 JN |
302 | static inline void partition_sysfs_add_subdir(struct hd_struct *p) |
303 | { | |
304 | struct kobject *k; | |
305 | ||
306 | k = kobject_get(&p->kobj); | |
307 | p->holder_dir = kobject_add_dir(k, "holders"); | |
308 | kobject_put(k); | |
309 | } | |
310 | ||
311 | static inline void disk_sysfs_add_subdirs(struct gendisk *disk) | |
312 | { | |
313 | struct kobject *k; | |
314 | ||
315 | k = kobject_get(&disk->kobj); | |
316 | disk->holder_dir = kobject_add_dir(k, "holders"); | |
317 | disk->slave_dir = kobject_add_dir(k, "slaves"); | |
318 | kobject_put(k); | |
319 | } | |
6a4d44c1 | 320 | |
1da177e4 LT |
321 | void delete_partition(struct gendisk *disk, int part) |
322 | { | |
323 | struct hd_struct *p = disk->part[part-1]; | |
324 | if (!p) | |
325 | return; | |
326 | if (!p->nr_sects) | |
327 | return; | |
328 | disk->part[part-1] = NULL; | |
329 | p->start_sect = 0; | |
330 | p->nr_sects = 0; | |
a362357b JA |
331 | p->ios[0] = p->ios[1] = 0; |
332 | p->sectors[0] = p->sectors[1] = 0; | |
b9d9c82b | 333 | sysfs_remove_link(&p->kobj, "subsystem"); |
6a4d44c1 JN |
334 | if (p->holder_dir) |
335 | kobject_unregister(p->holder_dir); | |
d4d7e5df KS |
336 | kobject_uevent(&p->kobj, KOBJ_REMOVE); |
337 | kobject_del(&p->kobj); | |
338 | kobject_put(&p->kobj); | |
1da177e4 LT |
339 | } |
340 | ||
341 | void add_partition(struct gendisk *disk, int part, sector_t start, sector_t len) | |
342 | { | |
343 | struct hd_struct *p; | |
344 | ||
345 | p = kmalloc(sizeof(*p), GFP_KERNEL); | |
346 | if (!p) | |
347 | return; | |
348 | ||
349 | memset(p, 0, sizeof(*p)); | |
350 | p->start_sect = start; | |
351 | p->nr_sects = len; | |
352 | p->partno = part; | |
25e206b5 | 353 | p->policy = disk->policy; |
1da177e4 | 354 | |
1da177e4 LT |
355 | if (isdigit(disk->kobj.name[strlen(disk->kobj.name)-1])) |
356 | snprintf(p->kobj.name,KOBJ_NAME_LEN,"%sp%d",disk->kobj.name,part); | |
357 | else | |
358 | snprintf(p->kobj.name,KOBJ_NAME_LEN,"%s%d",disk->kobj.name,part); | |
359 | p->kobj.parent = &disk->kobj; | |
360 | p->kobj.ktype = &ktype_part; | |
d4d7e5df KS |
361 | kobject_init(&p->kobj); |
362 | kobject_add(&p->kobj); | |
363 | if (!disk->part_uevent_suppress) | |
364 | kobject_uevent(&p->kobj, KOBJ_ADD); | |
b9d9c82b | 365 | sysfs_create_link(&p->kobj, &block_subsys.kset.kobj, "subsystem"); |
6a4d44c1 | 366 | partition_sysfs_add_subdir(p); |
1da177e4 LT |
367 | disk->part[part-1] = p; |
368 | } | |
369 | ||
8218ef80 GKH |
370 | static char *make_block_name(struct gendisk *disk) |
371 | { | |
372 | char *name; | |
373 | static char *block_str = "block:"; | |
374 | int size; | |
2436f039 | 375 | char *s; |
8218ef80 GKH |
376 | |
377 | size = strlen(block_str) + strlen(disk->disk_name) + 1; | |
378 | name = kmalloc(size, GFP_KERNEL); | |
379 | if (!name) | |
380 | return NULL; | |
381 | strcpy(name, block_str); | |
382 | strcat(name, disk->disk_name); | |
2436f039 SR |
383 | /* ewww... some of these buggers have / in name... */ |
384 | s = strchr(name, '/'); | |
385 | if (s) | |
386 | *s = '!'; | |
8218ef80 GKH |
387 | return name; |
388 | } | |
389 | ||
eee44cca | 390 | static int disk_sysfs_symlinks(struct gendisk *disk) |
1da177e4 LT |
391 | { |
392 | struct device *target = get_device(disk->driverfs_dev); | |
eee44cca JG |
393 | int err; |
394 | char *disk_name = NULL; | |
395 | ||
1da177e4 | 396 | if (target) { |
eee44cca JG |
397 | disk_name = make_block_name(disk); |
398 | if (!disk_name) { | |
399 | err = -ENOMEM; | |
400 | goto err_out; | |
8218ef80 | 401 | } |
eee44cca JG |
402 | |
403 | err = sysfs_create_link(&disk->kobj, &target->kobj, "device"); | |
404 | if (err) | |
405 | goto err_out_disk_name; | |
406 | ||
407 | err = sysfs_create_link(&target->kobj, &disk->kobj, disk_name); | |
408 | if (err) | |
409 | goto err_out_dev_link; | |
410 | } | |
411 | ||
412 | err = sysfs_create_link(&disk->kobj, &block_subsys.kset.kobj, | |
413 | "subsystem"); | |
414 | if (err) | |
415 | goto err_out_disk_name_lnk; | |
416 | ||
417 | kfree(disk_name); | |
418 | ||
419 | return 0; | |
420 | ||
421 | err_out_disk_name_lnk: | |
422 | if (target) { | |
423 | sysfs_remove_link(&target->kobj, disk_name); | |
424 | err_out_dev_link: | |
425 | sysfs_remove_link(&disk->kobj, "device"); | |
426 | err_out_disk_name: | |
427 | kfree(disk_name); | |
428 | err_out: | |
429 | put_device(target); | |
1da177e4 | 430 | } |
eee44cca | 431 | return err; |
1da177e4 LT |
432 | } |
433 | ||
434 | /* Not exported, helper to add_disk(). */ | |
435 | void register_disk(struct gendisk *disk) | |
436 | { | |
437 | struct block_device *bdev; | |
438 | char *s; | |
d4d7e5df KS |
439 | int i; |
440 | struct hd_struct *p; | |
1da177e4 LT |
441 | int err; |
442 | ||
443 | strlcpy(disk->kobj.name,disk->disk_name,KOBJ_NAME_LEN); | |
444 | /* ewww... some of these buggers have / in name... */ | |
445 | s = strchr(disk->kobj.name, '/'); | |
446 | if (s) | |
447 | *s = '!'; | |
448 | if ((err = kobject_add(&disk->kobj))) | |
449 | return; | |
eee44cca JG |
450 | err = disk_sysfs_symlinks(disk); |
451 | if (err) { | |
452 | kobject_del(&disk->kobj); | |
453 | return; | |
454 | } | |
6a4d44c1 | 455 | disk_sysfs_add_subdirs(disk); |
1da177e4 LT |
456 | |
457 | /* No minors to use for partitions */ | |
a2964188 | 458 | if (disk->minors == 1) |
d4d7e5df | 459 | goto exit; |
1da177e4 LT |
460 | |
461 | /* No such device (e.g., media were just removed) */ | |
462 | if (!get_capacity(disk)) | |
d4d7e5df | 463 | goto exit; |
1da177e4 LT |
464 | |
465 | bdev = bdget_disk(disk, 0); | |
466 | if (!bdev) | |
d4d7e5df | 467 | goto exit; |
1da177e4 | 468 | |
d4d7e5df | 469 | /* scan partition table, but suppress uevents */ |
1da177e4 | 470 | bdev->bd_invalidated = 1; |
d4d7e5df KS |
471 | disk->part_uevent_suppress = 1; |
472 | err = blkdev_get(bdev, FMODE_READ, 0); | |
473 | disk->part_uevent_suppress = 0; | |
474 | if (err < 0) | |
475 | goto exit; | |
1da177e4 | 476 | blkdev_put(bdev); |
d4d7e5df KS |
477 | |
478 | exit: | |
479 | /* announce disk after possible partitions are already created */ | |
480 | kobject_uevent(&disk->kobj, KOBJ_ADD); | |
481 | ||
482 | /* announce possible partitions */ | |
483 | for (i = 1; i < disk->minors; i++) { | |
484 | p = disk->part[i-1]; | |
485 | if (!p || !p->nr_sects) | |
486 | continue; | |
487 | kobject_uevent(&p->kobj, KOBJ_ADD); | |
488 | } | |
1da177e4 LT |
489 | } |
490 | ||
491 | int rescan_partitions(struct gendisk *disk, struct block_device *bdev) | |
492 | { | |
493 | struct parsed_partitions *state; | |
494 | int p, res; | |
495 | ||
496 | if (bdev->bd_part_count) | |
497 | return -EBUSY; | |
498 | res = invalidate_partition(disk, 0); | |
499 | if (res) | |
500 | return res; | |
501 | bdev->bd_invalidated = 0; | |
502 | for (p = 1; p < disk->minors; p++) | |
503 | delete_partition(disk, p); | |
504 | if (disk->fops->revalidate_disk) | |
505 | disk->fops->revalidate_disk(disk); | |
506 | if (!get_capacity(disk) || !(state = check_partition(disk, bdev))) | |
507 | return 0; | |
5127d002 SK |
508 | if (IS_ERR(state)) /* I/O error reading the partition table */ |
509 | return PTR_ERR(state); | |
1da177e4 LT |
510 | for (p = 1; p < state->limit; p++) { |
511 | sector_t size = state->parts[p].size; | |
512 | sector_t from = state->parts[p].from; | |
513 | if (!size) | |
514 | continue; | |
98bd34ea MM |
515 | if (from + size > get_capacity(disk)) { |
516 | printk(" %s: p%d exceeds device capacity\n", | |
517 | disk->disk_name, p); | |
518 | } | |
1da177e4 LT |
519 | add_partition(disk, p, from, size); |
520 | #ifdef CONFIG_BLK_DEV_MD | |
521 | if (state->parts[p].flags) | |
522 | md_autodetect_dev(bdev->bd_dev+p); | |
523 | #endif | |
524 | } | |
525 | kfree(state); | |
526 | return 0; | |
527 | } | |
528 | ||
529 | unsigned char *read_dev_sector(struct block_device *bdev, sector_t n, Sector *p) | |
530 | { | |
531 | struct address_space *mapping = bdev->bd_inode->i_mapping; | |
532 | struct page *page; | |
533 | ||
090d2b18 PE |
534 | page = read_mapping_page(mapping, (pgoff_t)(n >> (PAGE_CACHE_SHIFT-9)), |
535 | NULL); | |
1da177e4 LT |
536 | if (!IS_ERR(page)) { |
537 | wait_on_page_locked(page); | |
538 | if (!PageUptodate(page)) | |
539 | goto fail; | |
540 | if (PageError(page)) | |
541 | goto fail; | |
542 | p->v = page; | |
543 | return (unsigned char *)page_address(page) + ((n & ((1 << (PAGE_CACHE_SHIFT - 9)) - 1)) << 9); | |
544 | fail: | |
545 | page_cache_release(page); | |
546 | } | |
547 | p->v = NULL; | |
548 | return NULL; | |
549 | } | |
550 | ||
551 | EXPORT_SYMBOL(read_dev_sector); | |
552 | ||
553 | void del_gendisk(struct gendisk *disk) | |
554 | { | |
555 | int p; | |
556 | ||
557 | /* invalidate stuff */ | |
558 | for (p = disk->minors - 1; p > 0; p--) { | |
559 | invalidate_partition(disk, p); | |
560 | delete_partition(disk, p); | |
561 | } | |
562 | invalidate_partition(disk, 0); | |
563 | disk->capacity = 0; | |
564 | disk->flags &= ~GENHD_FL_UP; | |
565 | unlink_gendisk(disk); | |
566 | disk_stat_set_all(disk, 0); | |
20e5c81f | 567 | disk->stamp = 0; |
1da177e4 | 568 | |
032ebf26 | 569 | kobject_uevent(&disk->kobj, KOBJ_REMOVE); |
6a4d44c1 JN |
570 | if (disk->holder_dir) |
571 | kobject_unregister(disk->holder_dir); | |
572 | if (disk->slave_dir) | |
573 | kobject_unregister(disk->slave_dir); | |
1da177e4 | 574 | if (disk->driverfs_dev) { |
8218ef80 | 575 | char *disk_name = make_block_name(disk); |
1da177e4 | 576 | sysfs_remove_link(&disk->kobj, "device"); |
8218ef80 GKH |
577 | if (disk_name) { |
578 | sysfs_remove_link(&disk->driverfs_dev->kobj, disk_name); | |
579 | kfree(disk_name); | |
580 | } | |
1da177e4 | 581 | put_device(disk->driverfs_dev); |
032ebf26 | 582 | disk->driverfs_dev = NULL; |
1da177e4 | 583 | } |
b9d9c82b | 584 | sysfs_remove_link(&disk->kobj, "subsystem"); |
1da177e4 LT |
585 | kobject_del(&disk->kobj); |
586 | } |