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Commit | Line | Data |
---|---|---|
24bbb1fa | 1 | /* |
24bbb1fa MH |
2 | * Hypervisor filesystem for Linux on s390. |
3 | * | |
f55495ba | 4 | * Copyright IBM Corp. 2006, 2008 |
24bbb1fa MH |
5 | * Author(s): Michael Holzheu <holzheu@de.ibm.com> |
6 | */ | |
7 | ||
f55495ba MH |
8 | #define KMSG_COMPONENT "hypfs" |
9 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt | |
10 | ||
24bbb1fa MH |
11 | #include <linux/types.h> |
12 | #include <linux/errno.h> | |
13 | #include <linux/fs.h> | |
14 | #include <linux/namei.h> | |
15 | #include <linux/vfs.h> | |
5a0e3ad6 | 16 | #include <linux/slab.h> |
24bbb1fa | 17 | #include <linux/pagemap.h> |
24bbb1fa MH |
18 | #include <linux/time.h> |
19 | #include <linux/parser.h> | |
20 | #include <linux/sysfs.h> | |
21 | #include <linux/module.h> | |
b01af5ba MH |
22 | #include <linux/seq_file.h> |
23 | #include <linux/mount.h> | |
e2e40f2c | 24 | #include <linux/uio.h> |
24bbb1fa MH |
25 | #include <asm/ebcdic.h> |
26 | #include "hypfs.h" | |
24bbb1fa MH |
27 | |
28 | #define HYPFS_MAGIC 0x687970 /* ASCII 'hyp' */ | |
29 | #define TMP_SIZE 64 /* size of temporary buffers */ | |
30 | ||
a118cfdf | 31 | static struct dentry *hypfs_create_update_file(struct dentry *dir); |
24bbb1fa MH |
32 | |
33 | struct hypfs_sb_info { | |
6a62a216 EB |
34 | kuid_t uid; /* uid used for files and dirs */ |
35 | kgid_t gid; /* gid used for files and dirs */ | |
24bbb1fa MH |
36 | struct dentry *update_file; /* file to trigger update */ |
37 | time_t last_update; /* last update time in secs since 1970 */ | |
38 | struct mutex lock; /* lock to protect update process */ | |
39 | }; | |
40 | ||
5dfe4c96 | 41 | static const struct file_operations hypfs_file_ops; |
24bbb1fa | 42 | static struct file_system_type hypfs_type; |
b87221de | 43 | static const struct super_operations hypfs_s_ops; |
24bbb1fa MH |
44 | |
45 | /* start of list of all dentries, which have to be deleted on update */ | |
46 | static struct dentry *hypfs_last_dentry; | |
47 | ||
48 | static void hypfs_update_update(struct super_block *sb) | |
49 | { | |
50 | struct hypfs_sb_info *sb_info = sb->s_fs_info; | |
75c3cfa8 | 51 | struct inode *inode = d_inode(sb_info->update_file); |
24bbb1fa MH |
52 | |
53 | sb_info->last_update = get_seconds(); | |
54 | inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
55 | } | |
56 | ||
57 | /* directory tree removal functions */ | |
58 | ||
59 | static void hypfs_add_dentry(struct dentry *dentry) | |
60 | { | |
61 | dentry->d_fsdata = hypfs_last_dentry; | |
62 | hypfs_last_dentry = dentry; | |
63 | } | |
64 | ||
65 | static void hypfs_remove(struct dentry *dentry) | |
66 | { | |
67 | struct dentry *parent; | |
68 | ||
69 | parent = dentry->d_parent; | |
5955102c | 70 | inode_lock(d_inode(parent)); |
dc3f4198 | 71 | if (simple_positive(dentry)) { |
e36cb0b8 | 72 | if (d_is_dir(dentry)) |
75c3cfa8 | 73 | simple_rmdir(d_inode(parent), dentry); |
9b5a03e1 | 74 | else |
75c3cfa8 | 75 | simple_unlink(d_inode(parent), dentry); |
9b5a03e1 | 76 | } |
24bbb1fa MH |
77 | d_delete(dentry); |
78 | dput(dentry); | |
5955102c | 79 | inode_unlock(d_inode(parent)); |
24bbb1fa MH |
80 | } |
81 | ||
82 | static void hypfs_delete_tree(struct dentry *root) | |
83 | { | |
84 | while (hypfs_last_dentry) { | |
85 | struct dentry *next_dentry; | |
86 | next_dentry = hypfs_last_dentry->d_fsdata; | |
87 | hypfs_remove(hypfs_last_dentry); | |
88 | hypfs_last_dentry = next_dentry; | |
89 | } | |
90 | } | |
91 | ||
fec0ebae | 92 | static struct inode *hypfs_make_inode(struct super_block *sb, umode_t mode) |
24bbb1fa MH |
93 | { |
94 | struct inode *ret = new_inode(sb); | |
95 | ||
96 | if (ret) { | |
97 | struct hypfs_sb_info *hypfs_info = sb->s_fs_info; | |
c960bec4 | 98 | ret->i_ino = get_next_ino(); |
24bbb1fa MH |
99 | ret->i_mode = mode; |
100 | ret->i_uid = hypfs_info->uid; | |
101 | ret->i_gid = hypfs_info->gid; | |
24bbb1fa | 102 | ret->i_atime = ret->i_mtime = ret->i_ctime = CURRENT_TIME; |
fec0ebae | 103 | if (S_ISDIR(mode)) |
bfe86848 | 104 | set_nlink(ret, 2); |
24bbb1fa MH |
105 | } |
106 | return ret; | |
107 | } | |
108 | ||
b69257f2 | 109 | static void hypfs_evict_inode(struct inode *inode) |
24bbb1fa | 110 | { |
dbd5768f | 111 | clear_inode(inode); |
8e18e294 | 112 | kfree(inode->i_private); |
24bbb1fa MH |
113 | } |
114 | ||
115 | static int hypfs_open(struct inode *inode, struct file *filp) | |
116 | { | |
496ad9aa | 117 | char *data = file_inode(filp)->i_private; |
24bbb1fa MH |
118 | struct hypfs_sb_info *fs_info; |
119 | ||
120 | if (filp->f_mode & FMODE_WRITE) { | |
121 | if (!(inode->i_mode & S_IWUGO)) | |
122 | return -EACCES; | |
123 | } | |
124 | if (filp->f_mode & FMODE_READ) { | |
125 | if (!(inode->i_mode & S_IRUGO)) | |
126 | return -EACCES; | |
127 | } | |
128 | ||
129 | fs_info = inode->i_sb->s_fs_info; | |
130 | if(data) { | |
131 | mutex_lock(&fs_info->lock); | |
132 | filp->private_data = kstrdup(data, GFP_KERNEL); | |
133 | if (!filp->private_data) { | |
134 | mutex_unlock(&fs_info->lock); | |
135 | return -ENOMEM; | |
136 | } | |
137 | mutex_unlock(&fs_info->lock); | |
138 | } | |
58ea91c0 | 139 | return nonseekable_open(inode, filp); |
24bbb1fa MH |
140 | } |
141 | ||
a457ac28 | 142 | static ssize_t hypfs_read_iter(struct kiocb *iocb, struct iov_iter *to) |
24bbb1fa | 143 | { |
a457ac28 AV |
144 | struct file *file = iocb->ki_filp; |
145 | char *data = file->private_data; | |
146 | size_t available = strlen(data); | |
147 | loff_t pos = iocb->ki_pos; | |
148 | size_t count; | |
a29591c4 | 149 | |
a457ac28 AV |
150 | if (pos < 0) |
151 | return -EINVAL; | |
152 | if (pos >= available || !iov_iter_count(to)) | |
153 | return 0; | |
154 | count = copy_to_iter(data + pos, available - pos, to); | |
155 | if (!count) | |
156 | return -EFAULT; | |
157 | iocb->ki_pos = pos + count; | |
158 | file_accessed(file); | |
159 | return count; | |
24bbb1fa | 160 | } |
a457ac28 AV |
161 | |
162 | static ssize_t hypfs_write_iter(struct kiocb *iocb, struct iov_iter *from) | |
24bbb1fa MH |
163 | { |
164 | int rc; | |
6131ffaa AV |
165 | struct super_block *sb = file_inode(iocb->ki_filp)->i_sb; |
166 | struct hypfs_sb_info *fs_info = sb->s_fs_info; | |
a457ac28 | 167 | size_t count = iov_iter_count(from); |
24bbb1fa | 168 | |
24bbb1fa MH |
169 | /* |
170 | * Currently we only allow one update per second for two reasons: | |
171 | * 1. diag 204 is VERY expensive | |
172 | * 2. If several processes do updates in parallel and then read the | |
173 | * hypfs data, the likelihood of collisions is reduced, if we restrict | |
174 | * the minimum update interval. A collision occurs, if during the | |
175 | * data gathering of one process another process triggers an update | |
176 | * If the first process wants to ensure consistent data, it has | |
177 | * to restart data collection in this case. | |
178 | */ | |
179 | mutex_lock(&fs_info->lock); | |
180 | if (fs_info->last_update == get_seconds()) { | |
181 | rc = -EBUSY; | |
182 | goto out; | |
183 | } | |
184 | hypfs_delete_tree(sb->s_root); | |
31cb4bd3 | 185 | if (MACHINE_IS_VM) |
f78e41e3 | 186 | rc = hypfs_vm_create_files(sb->s_root); |
31cb4bd3 | 187 | else |
e334cf4f | 188 | rc = hypfs_diag_create_files(sb->s_root); |
24bbb1fa | 189 | if (rc) { |
f55495ba | 190 | pr_err("Updating the hypfs tree failed\n"); |
24bbb1fa MH |
191 | hypfs_delete_tree(sb->s_root); |
192 | goto out; | |
193 | } | |
194 | hypfs_update_update(sb); | |
195 | rc = count; | |
a457ac28 | 196 | iov_iter_advance(from, count); |
24bbb1fa MH |
197 | out: |
198 | mutex_unlock(&fs_info->lock); | |
199 | return rc; | |
200 | } | |
201 | ||
202 | static int hypfs_release(struct inode *inode, struct file *filp) | |
203 | { | |
204 | kfree(filp->private_data); | |
205 | return 0; | |
206 | } | |
207 | ||
208 | enum { opt_uid, opt_gid, opt_err }; | |
209 | ||
a447c093 | 210 | static const match_table_t hypfs_tokens = { |
24bbb1fa MH |
211 | {opt_uid, "uid=%u"}, |
212 | {opt_gid, "gid=%u"}, | |
213 | {opt_err, NULL} | |
214 | }; | |
215 | ||
216 | static int hypfs_parse_options(char *options, struct super_block *sb) | |
217 | { | |
218 | char *str; | |
219 | substring_t args[MAX_OPT_ARGS]; | |
6a62a216 EB |
220 | kuid_t uid; |
221 | kgid_t gid; | |
24bbb1fa MH |
222 | |
223 | if (!options) | |
224 | return 0; | |
225 | while ((str = strsep(&options, ",")) != NULL) { | |
226 | int token, option; | |
227 | struct hypfs_sb_info *hypfs_info = sb->s_fs_info; | |
228 | ||
229 | if (!*str) | |
230 | continue; | |
231 | token = match_token(str, hypfs_tokens, args); | |
232 | switch (token) { | |
233 | case opt_uid: | |
234 | if (match_int(&args[0], &option)) | |
235 | return -EINVAL; | |
6a62a216 EB |
236 | uid = make_kuid(current_user_ns(), option); |
237 | if (!uid_valid(uid)) | |
238 | return -EINVAL; | |
239 | hypfs_info->uid = uid; | |
24bbb1fa MH |
240 | break; |
241 | case opt_gid: | |
242 | if (match_int(&args[0], &option)) | |
243 | return -EINVAL; | |
6a62a216 EB |
244 | gid = make_kgid(current_user_ns(), option); |
245 | if (!gid_valid(gid)) | |
246 | return -EINVAL; | |
247 | hypfs_info->gid = gid; | |
24bbb1fa MH |
248 | break; |
249 | case opt_err: | |
250 | default: | |
f55495ba | 251 | pr_err("%s is not a valid mount option\n", str); |
24bbb1fa MH |
252 | return -EINVAL; |
253 | } | |
254 | } | |
255 | return 0; | |
256 | } | |
257 | ||
34c80b1d | 258 | static int hypfs_show_options(struct seq_file *s, struct dentry *root) |
b01af5ba | 259 | { |
34c80b1d | 260 | struct hypfs_sb_info *hypfs_info = root->d_sb->s_fs_info; |
b01af5ba | 261 | |
6a62a216 EB |
262 | seq_printf(s, ",uid=%u", from_kuid_munged(&init_user_ns, hypfs_info->uid)); |
263 | seq_printf(s, ",gid=%u", from_kgid_munged(&init_user_ns, hypfs_info->gid)); | |
b01af5ba MH |
264 | return 0; |
265 | } | |
266 | ||
24bbb1fa MH |
267 | static int hypfs_fill_super(struct super_block *sb, void *data, int silent) |
268 | { | |
269 | struct inode *root_inode; | |
270 | struct dentry *root_dentry; | |
271 | int rc = 0; | |
272 | struct hypfs_sb_info *sbi; | |
273 | ||
274 | sbi = kzalloc(sizeof(struct hypfs_sb_info), GFP_KERNEL); | |
275 | if (!sbi) | |
276 | return -ENOMEM; | |
277 | mutex_init(&sbi->lock); | |
e5423705 DH |
278 | sbi->uid = current_uid(); |
279 | sbi->gid = current_gid(); | |
24bbb1fa MH |
280 | sb->s_fs_info = sbi; |
281 | sb->s_blocksize = PAGE_CACHE_SIZE; | |
282 | sb->s_blocksize_bits = PAGE_CACHE_SHIFT; | |
283 | sb->s_magic = HYPFS_MAGIC; | |
284 | sb->s_op = &hypfs_s_ops; | |
f1771ffa AV |
285 | if (hypfs_parse_options(data, sb)) |
286 | return -EINVAL; | |
24bbb1fa | 287 | root_inode = hypfs_make_inode(sb, S_IFDIR | 0755); |
f1771ffa AV |
288 | if (!root_inode) |
289 | return -ENOMEM; | |
24bbb1fa MH |
290 | root_inode->i_op = &simple_dir_inode_operations; |
291 | root_inode->i_fop = &simple_dir_operations; | |
48fde701 AV |
292 | sb->s_root = root_dentry = d_make_root(root_inode); |
293 | if (!root_dentry) | |
f1771ffa | 294 | return -ENOMEM; |
31cb4bd3 | 295 | if (MACHINE_IS_VM) |
f78e41e3 | 296 | rc = hypfs_vm_create_files(root_dentry); |
31cb4bd3 | 297 | else |
e334cf4f | 298 | rc = hypfs_diag_create_files(root_dentry); |
24bbb1fa | 299 | if (rc) |
f1771ffa | 300 | return rc; |
a118cfdf | 301 | sbi->update_file = hypfs_create_update_file(root_dentry); |
f1771ffa AV |
302 | if (IS_ERR(sbi->update_file)) |
303 | return PTR_ERR(sbi->update_file); | |
24bbb1fa | 304 | hypfs_update_update(sb); |
f55495ba | 305 | pr_info("Hypervisor filesystem mounted\n"); |
24bbb1fa | 306 | return 0; |
24bbb1fa MH |
307 | } |
308 | ||
fc14f2fe AV |
309 | static struct dentry *hypfs_mount(struct file_system_type *fst, int flags, |
310 | const char *devname, void *data) | |
24bbb1fa | 311 | { |
fc14f2fe | 312 | return mount_single(fst, flags, data, hypfs_fill_super); |
24bbb1fa MH |
313 | } |
314 | ||
315 | static void hypfs_kill_super(struct super_block *sb) | |
316 | { | |
317 | struct hypfs_sb_info *sb_info = sb->s_fs_info; | |
318 | ||
f1771ffa | 319 | if (sb->s_root) |
388c571c | 320 | hypfs_delete_tree(sb->s_root); |
f1771ffa | 321 | if (sb_info->update_file) |
388c571c | 322 | hypfs_remove(sb_info->update_file); |
f1771ffa AV |
323 | kfree(sb->s_fs_info); |
324 | sb->s_fs_info = NULL; | |
24bbb1fa MH |
325 | kill_litter_super(sb); |
326 | } | |
327 | ||
a118cfdf | 328 | static struct dentry *hypfs_create_file(struct dentry *parent, const char *name, |
fec0ebae | 329 | char *data, umode_t mode) |
24bbb1fa MH |
330 | { |
331 | struct dentry *dentry; | |
332 | struct inode *inode; | |
24bbb1fa | 333 | |
5955102c | 334 | inode_lock(d_inode(parent)); |
24bbb1fa | 335 | dentry = lookup_one_len(name, parent, strlen(name)); |
9b5a03e1 MH |
336 | if (IS_ERR(dentry)) { |
337 | dentry = ERR_PTR(-ENOMEM); | |
338 | goto fail; | |
339 | } | |
a118cfdf | 340 | inode = hypfs_make_inode(parent->d_sb, mode); |
24bbb1fa MH |
341 | if (!inode) { |
342 | dput(dentry); | |
9b5a03e1 MH |
343 | dentry = ERR_PTR(-ENOMEM); |
344 | goto fail; | |
24bbb1fa | 345 | } |
fec0ebae | 346 | if (S_ISREG(mode)) { |
24bbb1fa MH |
347 | inode->i_fop = &hypfs_file_ops; |
348 | if (data) | |
349 | inode->i_size = strlen(data); | |
350 | else | |
351 | inode->i_size = 0; | |
fec0ebae | 352 | } else if (S_ISDIR(mode)) { |
24bbb1fa MH |
353 | inode->i_op = &simple_dir_inode_operations; |
354 | inode->i_fop = &simple_dir_operations; | |
75c3cfa8 | 355 | inc_nlink(d_inode(parent)); |
24bbb1fa MH |
356 | } else |
357 | BUG(); | |
8e18e294 | 358 | inode->i_private = data; |
24bbb1fa MH |
359 | d_instantiate(dentry, inode); |
360 | dget(dentry); | |
9b5a03e1 | 361 | fail: |
5955102c | 362 | inode_unlock(d_inode(parent)); |
24bbb1fa MH |
363 | return dentry; |
364 | } | |
365 | ||
a118cfdf | 366 | struct dentry *hypfs_mkdir(struct dentry *parent, const char *name) |
24bbb1fa MH |
367 | { |
368 | struct dentry *dentry; | |
369 | ||
a118cfdf | 370 | dentry = hypfs_create_file(parent, name, NULL, S_IFDIR | DIR_MODE); |
24bbb1fa MH |
371 | if (IS_ERR(dentry)) |
372 | return dentry; | |
373 | hypfs_add_dentry(dentry); | |
24bbb1fa MH |
374 | return dentry; |
375 | } | |
376 | ||
a118cfdf | 377 | static struct dentry *hypfs_create_update_file(struct dentry *dir) |
24bbb1fa MH |
378 | { |
379 | struct dentry *dentry; | |
380 | ||
a118cfdf | 381 | dentry = hypfs_create_file(dir, "update", NULL, |
24bbb1fa MH |
382 | S_IFREG | UPDATE_FILE_MODE); |
383 | /* | |
384 | * We do not put the update file on the 'delete' list with | |
385 | * hypfs_add_dentry(), since it should not be removed when the tree | |
386 | * is updated. | |
387 | */ | |
388 | return dentry; | |
389 | } | |
390 | ||
a118cfdf | 391 | struct dentry *hypfs_create_u64(struct dentry *dir, |
24bbb1fa MH |
392 | const char *name, __u64 value) |
393 | { | |
394 | char *buffer; | |
395 | char tmp[TMP_SIZE]; | |
396 | struct dentry *dentry; | |
397 | ||
ad2a5d8e | 398 | snprintf(tmp, TMP_SIZE, "%llu\n", (unsigned long long int)value); |
24bbb1fa MH |
399 | buffer = kstrdup(tmp, GFP_KERNEL); |
400 | if (!buffer) | |
401 | return ERR_PTR(-ENOMEM); | |
402 | dentry = | |
a118cfdf | 403 | hypfs_create_file(dir, name, buffer, S_IFREG | REG_FILE_MODE); |
24bbb1fa MH |
404 | if (IS_ERR(dentry)) { |
405 | kfree(buffer); | |
406 | return ERR_PTR(-ENOMEM); | |
407 | } | |
408 | hypfs_add_dentry(dentry); | |
409 | return dentry; | |
410 | } | |
411 | ||
a118cfdf | 412 | struct dentry *hypfs_create_str(struct dentry *dir, |
24bbb1fa MH |
413 | const char *name, char *string) |
414 | { | |
415 | char *buffer; | |
416 | struct dentry *dentry; | |
417 | ||
418 | buffer = kmalloc(strlen(string) + 2, GFP_KERNEL); | |
419 | if (!buffer) | |
420 | return ERR_PTR(-ENOMEM); | |
421 | sprintf(buffer, "%s\n", string); | |
422 | dentry = | |
a118cfdf | 423 | hypfs_create_file(dir, name, buffer, S_IFREG | REG_FILE_MODE); |
24bbb1fa MH |
424 | if (IS_ERR(dentry)) { |
425 | kfree(buffer); | |
426 | return ERR_PTR(-ENOMEM); | |
427 | } | |
428 | hypfs_add_dentry(dentry); | |
429 | return dentry; | |
430 | } | |
431 | ||
5dfe4c96 | 432 | static const struct file_operations hypfs_file_ops = { |
24bbb1fa MH |
433 | .open = hypfs_open, |
434 | .release = hypfs_release, | |
a457ac28 AV |
435 | .read_iter = hypfs_read_iter, |
436 | .write_iter = hypfs_write_iter, | |
6038f373 | 437 | .llseek = no_llseek, |
24bbb1fa MH |
438 | }; |
439 | ||
440 | static struct file_system_type hypfs_type = { | |
441 | .owner = THIS_MODULE, | |
442 | .name = "s390_hypfs", | |
fc14f2fe | 443 | .mount = hypfs_mount, |
24bbb1fa MH |
444 | .kill_sb = hypfs_kill_super |
445 | }; | |
7f78e035 | 446 | MODULE_ALIAS_FS("s390_hypfs"); |
24bbb1fa | 447 | |
b87221de | 448 | static const struct super_operations hypfs_s_ops = { |
24bbb1fa | 449 | .statfs = simple_statfs, |
b69257f2 | 450 | .evict_inode = hypfs_evict_inode, |
b01af5ba | 451 | .show_options = hypfs_show_options, |
24bbb1fa MH |
452 | }; |
453 | ||
24bbb1fa MH |
454 | static int __init hypfs_init(void) |
455 | { | |
456 | int rc; | |
457 | ||
2fcb3686 MH |
458 | rc = hypfs_dbfs_init(); |
459 | if (rc) | |
460 | return rc; | |
57b28f66 MH |
461 | if (hypfs_diag_init()) { |
462 | rc = -ENODATA; | |
2fcb3686 | 463 | goto fail_dbfs_exit; |
57b28f66 MH |
464 | } |
465 | if (hypfs_vm_init()) { | |
466 | rc = -ENODATA; | |
467 | goto fail_hypfs_diag_exit; | |
24bbb1fa | 468 | } |
07be0382 MS |
469 | if (hypfs_sprp_init()) { |
470 | rc = -ENODATA; | |
471 | goto fail_hypfs_vm_exit; | |
472 | } | |
34c0dad7 MH |
473 | if (hypfs_diag0c_init()) { |
474 | rc = -ENODATA; | |
475 | goto fail_hypfs_sprp_exit; | |
476 | } | |
f9bb4882 EB |
477 | rc = sysfs_create_mount_point(hypervisor_kobj, "s390"); |
478 | if (rc) | |
34c0dad7 | 479 | goto fail_hypfs_diag0c_exit; |
24bbb1fa MH |
480 | rc = register_filesystem(&hypfs_type); |
481 | if (rc) | |
482 | goto fail_filesystem; | |
483 | return 0; | |
484 | ||
485 | fail_filesystem: | |
f9bb4882 | 486 | sysfs_remove_mount_point(hypervisor_kobj, "s390"); |
34c0dad7 MH |
487 | fail_hypfs_diag0c_exit: |
488 | hypfs_diag0c_exit(); | |
07be0382 MS |
489 | fail_hypfs_sprp_exit: |
490 | hypfs_sprp_exit(); | |
57b28f66 MH |
491 | fail_hypfs_vm_exit: |
492 | hypfs_vm_exit(); | |
493 | fail_hypfs_diag_exit: | |
494 | hypfs_diag_exit(); | |
2fcb3686 MH |
495 | fail_dbfs_exit: |
496 | hypfs_dbfs_exit(); | |
f55495ba | 497 | pr_err("Initialization of hypfs failed with rc=%i\n", rc); |
24bbb1fa MH |
498 | return rc; |
499 | } | |
500 | ||
501 | static void __exit hypfs_exit(void) | |
502 | { | |
24bbb1fa | 503 | unregister_filesystem(&hypfs_type); |
f9bb4882 | 504 | sysfs_remove_mount_point(hypervisor_kobj, "s390"); |
34c0dad7 | 505 | hypfs_diag0c_exit(); |
07be0382 MS |
506 | hypfs_sprp_exit(); |
507 | hypfs_vm_exit(); | |
508 | hypfs_diag_exit(); | |
509 | hypfs_dbfs_exit(); | |
24bbb1fa MH |
510 | } |
511 | ||
512 | module_init(hypfs_init) | |
513 | module_exit(hypfs_exit) | |
514 | ||
515 | MODULE_LICENSE("GPL"); | |
516 | MODULE_AUTHOR("Michael Holzheu <holzheu@de.ibm.com>"); | |
517 | MODULE_DESCRIPTION("s390 Hypervisor Filesystem"); |