]>
Commit | Line | Data |
---|---|---|
b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1182fca3 MM |
2 | /* |
3 | * (C) 2001 Clemson University and The University of Chicago | |
4 | * | |
5 | * See COPYING in top-level directory. | |
6 | */ | |
7 | ||
8 | #include "protocol.h" | |
575e9461 MM |
9 | #include "orangefs-kernel.h" |
10 | #include "orangefs-bufmap.h" | |
1182fca3 MM |
11 | |
12 | #include <linux/parser.h> | |
13 | ||
8bb8aefd YL |
14 | /* a cache for orangefs-inode objects (i.e. orangefs inode private data) */ |
15 | static struct kmem_cache *orangefs_inode_cache; | |
1182fca3 | 16 | |
8bb8aefd YL |
17 | /* list for storing orangefs specific superblocks in use */ |
18 | LIST_HEAD(orangefs_superblocks); | |
1182fca3 | 19 | |
8bb8aefd | 20 | DEFINE_SPINLOCK(orangefs_superblocks_lock); |
1182fca3 MM |
21 | |
22 | enum { | |
23 | Opt_intr, | |
24 | Opt_acl, | |
25 | Opt_local_lock, | |
26 | ||
27 | Opt_err | |
28 | }; | |
29 | ||
30 | static const match_table_t tokens = { | |
31 | { Opt_acl, "acl" }, | |
32 | { Opt_intr, "intr" }, | |
33 | { Opt_local_lock, "local_lock" }, | |
34 | { Opt_err, NULL } | |
35 | }; | |
36 | ||
482664dd | 37 | uint64_t orangefs_features; |
1182fca3 | 38 | |
4dfdb713 DH |
39 | static int orangefs_show_options(struct seq_file *m, struct dentry *root) |
40 | { | |
41 | struct orangefs_sb_info_s *orangefs_sb = ORANGEFS_SB(root->d_sb); | |
42 | ||
1751e8a6 | 43 | if (root->d_sb->s_flags & SB_POSIXACL) |
4dfdb713 DH |
44 | seq_puts(m, ",acl"); |
45 | if (orangefs_sb->flags & ORANGEFS_OPT_INTR) | |
46 | seq_puts(m, ",intr"); | |
47 | if (orangefs_sb->flags & ORANGEFS_OPT_LOCAL_LOCK) | |
48 | seq_puts(m, ",local_lock"); | |
49 | return 0; | |
50 | } | |
51 | ||
1182fca3 MM |
52 | static int parse_mount_options(struct super_block *sb, char *options, |
53 | int silent) | |
54 | { | |
8bb8aefd | 55 | struct orangefs_sb_info_s *orangefs_sb = ORANGEFS_SB(sb); |
1182fca3 MM |
56 | substring_t args[MAX_OPT_ARGS]; |
57 | char *p; | |
58 | ||
59 | /* | |
60 | * Force any potential flags that might be set from the mount | |
61 | * to zero, ie, initialize to unset. | |
62 | */ | |
1751e8a6 | 63 | sb->s_flags &= ~SB_POSIXACL; |
8bb8aefd YL |
64 | orangefs_sb->flags &= ~ORANGEFS_OPT_INTR; |
65 | orangefs_sb->flags &= ~ORANGEFS_OPT_LOCAL_LOCK; | |
1182fca3 MM |
66 | |
67 | while ((p = strsep(&options, ",")) != NULL) { | |
68 | int token; | |
69 | ||
70 | if (!*p) | |
71 | continue; | |
72 | ||
73 | token = match_token(p, tokens, args); | |
74 | switch (token) { | |
75 | case Opt_acl: | |
1751e8a6 | 76 | sb->s_flags |= SB_POSIXACL; |
1182fca3 MM |
77 | break; |
78 | case Opt_intr: | |
8bb8aefd | 79 | orangefs_sb->flags |= ORANGEFS_OPT_INTR; |
1182fca3 MM |
80 | break; |
81 | case Opt_local_lock: | |
8bb8aefd | 82 | orangefs_sb->flags |= ORANGEFS_OPT_LOCAL_LOCK; |
1182fca3 MM |
83 | break; |
84 | default: | |
85 | goto fail; | |
86 | } | |
87 | } | |
88 | ||
89 | return 0; | |
90 | fail: | |
91 | if (!silent) | |
92 | gossip_err("Error: mount option [%s] is not supported.\n", p); | |
93 | return -EINVAL; | |
94 | } | |
95 | ||
8bb8aefd | 96 | static void orangefs_inode_cache_ctor(void *req) |
1182fca3 | 97 | { |
8bb8aefd | 98 | struct orangefs_inode_s *orangefs_inode = req; |
1182fca3 | 99 | |
8bb8aefd YL |
100 | inode_init_once(&orangefs_inode->vfs_inode); |
101 | init_rwsem(&orangefs_inode->xattr_sem); | |
1182fca3 MM |
102 | } |
103 | ||
8bb8aefd | 104 | static struct inode *orangefs_alloc_inode(struct super_block *sb) |
1182fca3 | 105 | { |
8bb8aefd | 106 | struct orangefs_inode_s *orangefs_inode; |
1182fca3 | 107 | |
2d4cae0d | 108 | orangefs_inode = kmem_cache_alloc(orangefs_inode_cache, GFP_KERNEL); |
07a25853 | 109 | if (!orangefs_inode) |
1182fca3 | 110 | return NULL; |
1182fca3 MM |
111 | |
112 | /* | |
113 | * We want to clear everything except for rw_semaphore and the | |
114 | * vfs_inode. | |
115 | */ | |
8bb8aefd YL |
116 | memset(&orangefs_inode->refn.khandle, 0, 16); |
117 | orangefs_inode->refn.fs_id = ORANGEFS_FS_ID_NULL; | |
118 | orangefs_inode->last_failed_block_index_read = 0; | |
119 | memset(orangefs_inode->link_target, 0, sizeof(orangefs_inode->link_target)); | |
1182fca3 MM |
120 | |
121 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
8bb8aefd YL |
122 | "orangefs_alloc_inode: allocated %p\n", |
123 | &orangefs_inode->vfs_inode); | |
124 | return &orangefs_inode->vfs_inode; | |
1182fca3 MM |
125 | } |
126 | ||
0695d7dc PZ |
127 | static void orangefs_i_callback(struct rcu_head *head) |
128 | { | |
129 | struct inode *inode = container_of(head, struct inode, i_rcu); | |
130 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); | |
131 | kmem_cache_free(orangefs_inode_cache, orangefs_inode); | |
132 | } | |
133 | ||
8bb8aefd | 134 | static void orangefs_destroy_inode(struct inode *inode) |
1182fca3 | 135 | { |
8bb8aefd | 136 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); |
1182fca3 MM |
137 | |
138 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
139 | "%s: deallocated %p destroying inode %pU\n", | |
8bb8aefd | 140 | __func__, orangefs_inode, get_khandle_from_ino(inode)); |
1182fca3 | 141 | |
0695d7dc | 142 | call_rcu(&inode->i_rcu, orangefs_i_callback); |
1182fca3 MM |
143 | } |
144 | ||
145 | /* | |
146 | * NOTE: information filled in here is typically reflected in the | |
147 | * output of the system command 'df' | |
148 | */ | |
8bb8aefd | 149 | static int orangefs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1182fca3 MM |
150 | { |
151 | int ret = -ENOMEM; | |
8bb8aefd | 152 | struct orangefs_kernel_op_s *new_op = NULL; |
1182fca3 MM |
153 | int flags = 0; |
154 | struct super_block *sb = NULL; | |
155 | ||
156 | sb = dentry->d_sb; | |
157 | ||
158 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
95f5f88f MM |
159 | "%s: called on sb %p (fs_id is %d)\n", |
160 | __func__, | |
161 | sb, | |
162 | (int)(ORANGEFS_SB(sb)->fs_id)); | |
1182fca3 | 163 | |
8bb8aefd | 164 | new_op = op_alloc(ORANGEFS_VFS_OP_STATFS); |
1182fca3 MM |
165 | if (!new_op) |
166 | return ret; | |
8bb8aefd | 167 | new_op->upcall.req.statfs.fs_id = ORANGEFS_SB(sb)->fs_id; |
1182fca3 | 168 | |
8bb8aefd YL |
169 | if (ORANGEFS_SB(sb)->flags & ORANGEFS_OPT_INTR) |
170 | flags = ORANGEFS_OP_INTERRUPTIBLE; | |
1182fca3 | 171 | |
8bb8aefd | 172 | ret = service_operation(new_op, "orangefs_statfs", flags); |
1182fca3 MM |
173 | |
174 | if (new_op->downcall.status < 0) | |
175 | goto out_op_release; | |
176 | ||
177 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
be57366e MM |
178 | "%s: got %ld blocks available | " |
179 | "%ld blocks total | %ld block size | " | |
180 | "%ld files total | %ld files avail\n", | |
181 | __func__, | |
1182fca3 MM |
182 | (long)new_op->downcall.resp.statfs.blocks_avail, |
183 | (long)new_op->downcall.resp.statfs.blocks_total, | |
be57366e MM |
184 | (long)new_op->downcall.resp.statfs.block_size, |
185 | (long)new_op->downcall.resp.statfs.files_total, | |
186 | (long)new_op->downcall.resp.statfs.files_avail); | |
1182fca3 MM |
187 | |
188 | buf->f_type = sb->s_magic; | |
8bb8aefd | 189 | memcpy(&buf->f_fsid, &ORANGEFS_SB(sb)->fs_id, sizeof(buf->f_fsid)); |
1182fca3 | 190 | buf->f_bsize = new_op->downcall.resp.statfs.block_size; |
47b4948f | 191 | buf->f_namelen = ORANGEFS_NAME_MAX; |
1182fca3 MM |
192 | |
193 | buf->f_blocks = (sector_t) new_op->downcall.resp.statfs.blocks_total; | |
194 | buf->f_bfree = (sector_t) new_op->downcall.resp.statfs.blocks_avail; | |
195 | buf->f_bavail = (sector_t) new_op->downcall.resp.statfs.blocks_avail; | |
196 | buf->f_files = (sector_t) new_op->downcall.resp.statfs.files_total; | |
197 | buf->f_ffree = (sector_t) new_op->downcall.resp.statfs.files_avail; | |
198 | buf->f_frsize = sb->s_blocksize; | |
199 | ||
200 | out_op_release: | |
201 | op_release(new_op); | |
95f5f88f | 202 | gossip_debug(GOSSIP_SUPER_DEBUG, "%s: returning %d\n", __func__, ret); |
1182fca3 MM |
203 | return ret; |
204 | } | |
205 | ||
206 | /* | |
207 | * Remount as initiated by VFS layer. We just need to reparse the mount | |
208 | * options, no need to signal pvfs2-client-core about it. | |
209 | */ | |
8bb8aefd | 210 | static int orangefs_remount_fs(struct super_block *sb, int *flags, char *data) |
1182fca3 | 211 | { |
8bb8aefd | 212 | gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_remount_fs: called\n"); |
1182fca3 MM |
213 | return parse_mount_options(sb, data, 1); |
214 | } | |
215 | ||
216 | /* | |
217 | * Remount as initiated by pvfs2-client-core on restart. This is used to | |
218 | * repopulate mount information left from previous pvfs2-client-core. | |
219 | * | |
220 | * the idea here is that given a valid superblock, we're | |
221 | * re-initializing the user space client with the initial mount | |
222 | * information specified when the super block was first initialized. | |
223 | * this is very different than the first initialization/creation of a | |
224 | * superblock. we use the special service_priority_operation to make | |
225 | * sure that the mount gets ahead of any other pending operation that | |
226 | * is waiting for servicing. this means that the pvfs2-client won't | |
227 | * fail to start several times for all other pending operations before | |
228 | * the client regains all of the mount information from us. | |
229 | * NOTE: this function assumes that the request_mutex is already acquired! | |
230 | */ | |
45996492 | 231 | int orangefs_remount(struct orangefs_sb_info_s *orangefs_sb) |
1182fca3 | 232 | { |
8bb8aefd | 233 | struct orangefs_kernel_op_s *new_op; |
1182fca3 MM |
234 | int ret = -EINVAL; |
235 | ||
8bb8aefd | 236 | gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_remount: called\n"); |
1182fca3 | 237 | |
8bb8aefd | 238 | new_op = op_alloc(ORANGEFS_VFS_OP_FS_MOUNT); |
1182fca3 MM |
239 | if (!new_op) |
240 | return -ENOMEM; | |
8bb8aefd | 241 | strncpy(new_op->upcall.req.fs_mount.orangefs_config_server, |
45996492 | 242 | orangefs_sb->devname, |
8bb8aefd | 243 | ORANGEFS_MAX_SERVER_ADDR_LEN); |
1182fca3 MM |
244 | |
245 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
8bb8aefd YL |
246 | "Attempting ORANGEFS Remount via host %s\n", |
247 | new_op->upcall.req.fs_mount.orangefs_config_server); | |
1182fca3 MM |
248 | |
249 | /* | |
adcf34a2 | 250 | * we assume that the calling function has already acquired the |
1182fca3 MM |
251 | * request_mutex to prevent other operations from bypassing |
252 | * this one | |
253 | */ | |
8bb8aefd | 254 | ret = service_operation(new_op, "orangefs_remount", |
adcf34a2 | 255 | ORANGEFS_OP_PRIORITY | ORANGEFS_OP_NO_MUTEX); |
1182fca3 | 256 | gossip_debug(GOSSIP_SUPER_DEBUG, |
8bb8aefd | 257 | "orangefs_remount: mount got return value of %d\n", |
1182fca3 MM |
258 | ret); |
259 | if (ret == 0) { | |
260 | /* | |
261 | * store the id assigned to this sb -- it's just a | |
262 | * short-lived mapping that the system interface uses | |
263 | * to map this superblock to a particular mount entry | |
264 | */ | |
45996492 AV |
265 | orangefs_sb->id = new_op->downcall.resp.fs_mount.id; |
266 | orangefs_sb->mount_pending = 0; | |
1182fca3 MM |
267 | } |
268 | ||
269 | op_release(new_op); | |
482664dd | 270 | |
f60fbdbf | 271 | if (orangefs_userspace_version >= 20906) { |
482664dd MB |
272 | new_op = op_alloc(ORANGEFS_VFS_OP_FEATURES); |
273 | if (!new_op) | |
274 | return -ENOMEM; | |
275 | new_op->upcall.req.features.features = 0; | |
cefdc26e MB |
276 | ret = service_operation(new_op, "orangefs_features", |
277 | ORANGEFS_OP_PRIORITY | ORANGEFS_OP_NO_MUTEX); | |
278 | if (!ret) | |
279 | orangefs_features = | |
280 | new_op->downcall.resp.features.features; | |
281 | else | |
282 | orangefs_features = 0; | |
482664dd MB |
283 | op_release(new_op); |
284 | } else { | |
285 | orangefs_features = 0; | |
286 | } | |
287 | ||
1182fca3 MM |
288 | return ret; |
289 | } | |
290 | ||
291 | int fsid_key_table_initialize(void) | |
292 | { | |
293 | return 0; | |
294 | } | |
295 | ||
296 | void fsid_key_table_finalize(void) | |
297 | { | |
298 | } | |
299 | ||
8bb8aefd YL |
300 | static const struct super_operations orangefs_s_ops = { |
301 | .alloc_inode = orangefs_alloc_inode, | |
302 | .destroy_inode = orangefs_destroy_inode, | |
1182fca3 | 303 | .drop_inode = generic_delete_inode, |
8bb8aefd YL |
304 | .statfs = orangefs_statfs, |
305 | .remount_fs = orangefs_remount_fs, | |
4dfdb713 | 306 | .show_options = orangefs_show_options, |
1182fca3 MM |
307 | }; |
308 | ||
8bb8aefd | 309 | static struct dentry *orangefs_fh_to_dentry(struct super_block *sb, |
1182fca3 MM |
310 | struct fid *fid, |
311 | int fh_len, | |
312 | int fh_type) | |
313 | { | |
8bb8aefd | 314 | struct orangefs_object_kref refn; |
1182fca3 MM |
315 | |
316 | if (fh_len < 5 || fh_type > 2) | |
317 | return NULL; | |
318 | ||
8bb8aefd | 319 | ORANGEFS_khandle_from(&(refn.khandle), fid->raw, 16); |
1182fca3 MM |
320 | refn.fs_id = (u32) fid->raw[4]; |
321 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
322 | "fh_to_dentry: handle %pU, fs_id %d\n", | |
323 | &refn.khandle, | |
324 | refn.fs_id); | |
325 | ||
8bb8aefd | 326 | return d_obtain_alias(orangefs_iget(sb, &refn)); |
1182fca3 MM |
327 | } |
328 | ||
8bb8aefd | 329 | static int orangefs_encode_fh(struct inode *inode, |
1182fca3 MM |
330 | __u32 *fh, |
331 | int *max_len, | |
332 | struct inode *parent) | |
333 | { | |
334 | int len = parent ? 10 : 5; | |
335 | int type = 1; | |
8bb8aefd | 336 | struct orangefs_object_kref refn; |
1182fca3 MM |
337 | |
338 | if (*max_len < len) { | |
79d7cd61 | 339 | gossip_err("fh buffer is too small for encoding\n"); |
1182fca3 MM |
340 | *max_len = len; |
341 | type = 255; | |
342 | goto out; | |
343 | } | |
344 | ||
8bb8aefd YL |
345 | refn = ORANGEFS_I(inode)->refn; |
346 | ORANGEFS_khandle_to(&refn.khandle, fh, 16); | |
1182fca3 MM |
347 | fh[4] = refn.fs_id; |
348 | ||
349 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
350 | "Encoding fh: handle %pU, fsid %u\n", | |
351 | &refn.khandle, | |
352 | refn.fs_id); | |
353 | ||
354 | ||
355 | if (parent) { | |
8bb8aefd YL |
356 | refn = ORANGEFS_I(parent)->refn; |
357 | ORANGEFS_khandle_to(&refn.khandle, (char *) fh + 20, 16); | |
1182fca3 MM |
358 | fh[9] = refn.fs_id; |
359 | ||
360 | type = 2; | |
361 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
362 | "Encoding parent: handle %pU, fsid %u\n", | |
363 | &refn.khandle, | |
364 | refn.fs_id); | |
365 | } | |
366 | *max_len = len; | |
367 | ||
368 | out: | |
369 | return type; | |
370 | } | |
371 | ||
acaca36d | 372 | static const struct export_operations orangefs_export_ops = { |
8bb8aefd YL |
373 | .encode_fh = orangefs_encode_fh, |
374 | .fh_to_dentry = orangefs_fh_to_dentry, | |
1182fca3 MM |
375 | }; |
376 | ||
9d286b0d MB |
377 | static int orangefs_unmount(int id, __s32 fs_id, const char *devname) |
378 | { | |
379 | struct orangefs_kernel_op_s *op; | |
380 | int r; | |
381 | op = op_alloc(ORANGEFS_VFS_OP_FS_UMOUNT); | |
382 | if (!op) | |
383 | return -ENOMEM; | |
384 | op->upcall.req.fs_umount.id = id; | |
385 | op->upcall.req.fs_umount.fs_id = fs_id; | |
386 | strncpy(op->upcall.req.fs_umount.orangefs_config_server, | |
6bdfb48d | 387 | devname, ORANGEFS_MAX_SERVER_ADDR_LEN - 1); |
9d286b0d MB |
388 | r = service_operation(op, "orangefs_fs_umount", 0); |
389 | /* Not much to do about an error here. */ | |
390 | if (r) | |
391 | gossip_err("orangefs_unmount: service_operation %d\n", r); | |
392 | op_release(op); | |
393 | return r; | |
394 | } | |
395 | ||
8bb8aefd YL |
396 | static int orangefs_fill_sb(struct super_block *sb, |
397 | struct orangefs_fs_mount_response *fs_mount, | |
5c0dbbc6 | 398 | void *data, int silent) |
1182fca3 MM |
399 | { |
400 | int ret = -EINVAL; | |
401 | struct inode *root = NULL; | |
402 | struct dentry *root_dentry = NULL; | |
8bb8aefd | 403 | struct orangefs_object_kref root_object; |
1182fca3 | 404 | |
8bb8aefd | 405 | /* alloc and init our private orangefs sb info */ |
05d31c5c | 406 | sb->s_fs_info = kzalloc(sizeof(struct orangefs_sb_info_s), GFP_KERNEL); |
8bb8aefd | 407 | if (!ORANGEFS_SB(sb)) |
1182fca3 | 408 | return -ENOMEM; |
8bb8aefd | 409 | ORANGEFS_SB(sb)->sb = sb; |
1182fca3 | 410 | |
8bb8aefd YL |
411 | ORANGEFS_SB(sb)->root_khandle = fs_mount->root_khandle; |
412 | ORANGEFS_SB(sb)->fs_id = fs_mount->fs_id; | |
413 | ORANGEFS_SB(sb)->id = fs_mount->id; | |
1182fca3 | 414 | |
5c0dbbc6 AV |
415 | if (data) { |
416 | ret = parse_mount_options(sb, data, silent); | |
1182fca3 MM |
417 | if (ret) |
418 | return ret; | |
419 | } | |
420 | ||
421 | /* Hang the xattr handlers off the superblock */ | |
8bb8aefd YL |
422 | sb->s_xattr = orangefs_xattr_handlers; |
423 | sb->s_magic = ORANGEFS_SUPER_MAGIC; | |
424 | sb->s_op = &orangefs_s_ops; | |
425 | sb->s_d_op = &orangefs_dentry_operations; | |
1182fca3 | 426 | |
9f8fd53c MB |
427 | sb->s_blocksize = PAGE_SIZE; |
428 | sb->s_blocksize_bits = PAGE_SHIFT; | |
1182fca3 MM |
429 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
430 | ||
8bb8aefd YL |
431 | root_object.khandle = ORANGEFS_SB(sb)->root_khandle; |
432 | root_object.fs_id = ORANGEFS_SB(sb)->fs_id; | |
1182fca3 MM |
433 | gossip_debug(GOSSIP_SUPER_DEBUG, |
434 | "get inode %pU, fsid %d\n", | |
435 | &root_object.khandle, | |
436 | root_object.fs_id); | |
437 | ||
8bb8aefd | 438 | root = orangefs_iget(sb, &root_object); |
1182fca3 MM |
439 | if (IS_ERR(root)) |
440 | return PTR_ERR(root); | |
441 | ||
442 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
443 | "Allocated root inode [%p] with mode %x\n", | |
444 | root, | |
445 | root->i_mode); | |
446 | ||
447 | /* allocates and places root dentry in dcache */ | |
448 | root_dentry = d_make_root(root); | |
b05a7851 | 449 | if (!root_dentry) |
1182fca3 | 450 | return -ENOMEM; |
1182fca3 | 451 | |
8bb8aefd | 452 | sb->s_export_op = &orangefs_export_ops; |
1182fca3 MM |
453 | sb->s_root = root_dentry; |
454 | return 0; | |
455 | } | |
456 | ||
8bb8aefd | 457 | struct dentry *orangefs_mount(struct file_system_type *fst, |
1182fca3 MM |
458 | int flags, |
459 | const char *devname, | |
460 | void *data) | |
461 | { | |
462 | int ret = -EINVAL; | |
463 | struct super_block *sb = ERR_PTR(-EINVAL); | |
8bb8aefd | 464 | struct orangefs_kernel_op_s *new_op; |
1be21f86 | 465 | struct dentry *d = ERR_PTR(-EINVAL); |
1182fca3 MM |
466 | |
467 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
8bb8aefd | 468 | "orangefs_mount: called with devname %s\n", |
1182fca3 MM |
469 | devname); |
470 | ||
471 | if (!devname) { | |
472 | gossip_err("ERROR: device name not specified.\n"); | |
473 | return ERR_PTR(-EINVAL); | |
474 | } | |
475 | ||
8bb8aefd | 476 | new_op = op_alloc(ORANGEFS_VFS_OP_FS_MOUNT); |
1182fca3 MM |
477 | if (!new_op) |
478 | return ERR_PTR(-ENOMEM); | |
479 | ||
8bb8aefd | 480 | strncpy(new_op->upcall.req.fs_mount.orangefs_config_server, |
1182fca3 | 481 | devname, |
6bdfb48d | 482 | ORANGEFS_MAX_SERVER_ADDR_LEN - 1); |
1182fca3 MM |
483 | |
484 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
8bb8aefd YL |
485 | "Attempting ORANGEFS Mount via host %s\n", |
486 | new_op->upcall.req.fs_mount.orangefs_config_server); | |
1182fca3 | 487 | |
8bb8aefd | 488 | ret = service_operation(new_op, "orangefs_mount", 0); |
1182fca3 | 489 | gossip_debug(GOSSIP_SUPER_DEBUG, |
8bb8aefd | 490 | "orangefs_mount: mount got return value of %d\n", ret); |
1182fca3 MM |
491 | if (ret) |
492 | goto free_op; | |
493 | ||
8bb8aefd | 494 | if (new_op->downcall.resp.fs_mount.fs_id == ORANGEFS_FS_ID_NULL) { |
1182fca3 MM |
495 | gossip_err("ERROR: Retrieved null fs_id\n"); |
496 | ret = -EINVAL; | |
497 | goto free_op; | |
498 | } | |
499 | ||
1be21f86 MM |
500 | sb = sget(fst, NULL, set_anon_super, flags, NULL); |
501 | ||
502 | if (IS_ERR(sb)) { | |
503 | d = ERR_CAST(sb); | |
9d286b0d MB |
504 | orangefs_unmount(new_op->downcall.resp.fs_mount.id, |
505 | new_op->downcall.resp.fs_mount.fs_id, devname); | |
1182fca3 MM |
506 | goto free_op; |
507 | } | |
508 | ||
8bb8aefd | 509 | ret = orangefs_fill_sb(sb, |
5c0dbbc6 | 510 | &new_op->downcall.resp.fs_mount, data, |
1751e8a6 | 511 | flags & SB_SILENT ? 1 : 0); |
1be21f86 MM |
512 | |
513 | if (ret) { | |
514 | d = ERR_PTR(ret); | |
1ec1688c | 515 | goto free_sb_and_op; |
1be21f86 | 516 | } |
1182fca3 MM |
517 | |
518 | /* | |
519 | * on successful mount, store the devname and data | |
520 | * used | |
521 | */ | |
8bb8aefd | 522 | strncpy(ORANGEFS_SB(sb)->devname, |
1182fca3 | 523 | devname, |
6bdfb48d | 524 | ORANGEFS_MAX_SERVER_ADDR_LEN - 1); |
1182fca3 MM |
525 | |
526 | /* mount_pending must be cleared */ | |
8bb8aefd | 527 | ORANGEFS_SB(sb)->mount_pending = 0; |
1182fca3 MM |
528 | |
529 | /* | |
8bb8aefd | 530 | * finally, add this sb to our list of known orangefs |
1182fca3 MM |
531 | * sb's |
532 | */ | |
45996492 AV |
533 | gossip_debug(GOSSIP_SUPER_DEBUG, |
534 | "Adding SB %p to orangefs superblocks\n", | |
535 | ORANGEFS_SB(sb)); | |
536 | spin_lock(&orangefs_superblocks_lock); | |
537 | list_add_tail(&ORANGEFS_SB(sb)->list, &orangefs_superblocks); | |
538 | spin_unlock(&orangefs_superblocks_lock); | |
1182fca3 | 539 | op_release(new_op); |
482664dd | 540 | |
1ec1688c MB |
541 | /* Must be removed from the list now. */ |
542 | ORANGEFS_SB(sb)->no_list = 0; | |
543 | ||
f60fbdbf | 544 | if (orangefs_userspace_version >= 20906) { |
482664dd MB |
545 | new_op = op_alloc(ORANGEFS_VFS_OP_FEATURES); |
546 | if (!new_op) | |
547 | return ERR_PTR(-ENOMEM); | |
548 | new_op->upcall.req.features.features = 0; | |
549 | ret = service_operation(new_op, "orangefs_features", 0); | |
550 | orangefs_features = new_op->downcall.resp.features.features; | |
551 | op_release(new_op); | |
552 | } else { | |
553 | orangefs_features = 0; | |
554 | } | |
555 | ||
1be21f86 | 556 | return dget(sb->s_root); |
1182fca3 | 557 | |
1ec1688c MB |
558 | free_sb_and_op: |
559 | /* Will call orangefs_kill_sb with sb not in list. */ | |
560 | ORANGEFS_SB(sb)->no_list = 1; | |
9d286b0d | 561 | /* ORANGEFS_VFS_OP_FS_UMOUNT is done by orangefs_kill_sb. */ |
1ec1688c | 562 | deactivate_locked_super(sb); |
1182fca3 | 563 | free_op: |
8bb8aefd | 564 | gossip_err("orangefs_mount: mount request failed with %d\n", ret); |
1182fca3 | 565 | if (ret == -EINVAL) { |
8bb8aefd | 566 | gossip_err("Ensure that all orangefs-servers have the same FS configuration files\n"); |
1182fca3 MM |
567 | gossip_err("Look at pvfs2-client-core log file (typically /tmp/pvfs2-client.log) for more details\n"); |
568 | } | |
569 | ||
570 | op_release(new_op); | |
571 | ||
1be21f86 | 572 | return d; |
1182fca3 MM |
573 | } |
574 | ||
8bb8aefd | 575 | void orangefs_kill_sb(struct super_block *sb) |
1182fca3 | 576 | { |
9d286b0d | 577 | int r; |
8bb8aefd | 578 | gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_kill_sb: called\n"); |
1182fca3 | 579 | |
524b1d30 AV |
580 | /* provided sb cleanup */ |
581 | kill_anon_super(sb); | |
582 | ||
65903842 AV |
583 | if (!ORANGEFS_SB(sb)) { |
584 | mutex_lock(&orangefs_request_mutex); | |
585 | mutex_unlock(&orangefs_request_mutex); | |
586 | return; | |
587 | } | |
1182fca3 MM |
588 | /* |
589 | * issue the unmount to userspace to tell it to remove the | |
590 | * dynamic mount info it has for this superblock | |
591 | */ | |
9d286b0d MB |
592 | r = orangefs_unmount(ORANGEFS_SB(sb)->id, ORANGEFS_SB(sb)->fs_id, |
593 | ORANGEFS_SB(sb)->devname); | |
594 | if (!r) | |
595 | ORANGEFS_SB(sb)->mount_pending = 1; | |
1182fca3 | 596 | |
1ec1688c MB |
597 | if (!ORANGEFS_SB(sb)->no_list) { |
598 | /* remove the sb from our list of orangefs specific sb's */ | |
599 | spin_lock(&orangefs_superblocks_lock); | |
600 | /* not list_del_init */ | |
601 | __list_del_entry(&ORANGEFS_SB(sb)->list); | |
602 | ORANGEFS_SB(sb)->list.prev = NULL; | |
603 | spin_unlock(&orangefs_superblocks_lock); | |
604 | } | |
45996492 AV |
605 | |
606 | /* | |
607 | * make sure that ORANGEFS_DEV_REMOUNT_ALL loop that might've seen us | |
608 | * gets completed before we free the dang thing. | |
609 | */ | |
1d503617 MB |
610 | mutex_lock(&orangefs_request_mutex); |
611 | mutex_unlock(&orangefs_request_mutex); | |
1182fca3 | 612 | |
8bb8aefd YL |
613 | /* free the orangefs superblock private data */ |
614 | kfree(ORANGEFS_SB(sb)); | |
1182fca3 MM |
615 | } |
616 | ||
8bb8aefd | 617 | int orangefs_inode_cache_initialize(void) |
1182fca3 | 618 | { |
6b330623 DW |
619 | orangefs_inode_cache = kmem_cache_create_usercopy( |
620 | "orangefs_inode_cache", | |
621 | sizeof(struct orangefs_inode_s), | |
622 | 0, | |
623 | ORANGEFS_CACHE_CREATE_FLAGS, | |
624 | offsetof(struct orangefs_inode_s, | |
625 | link_target), | |
626 | sizeof_field(struct orangefs_inode_s, | |
627 | link_target), | |
628 | orangefs_inode_cache_ctor); | |
1182fca3 | 629 | |
8bb8aefd YL |
630 | if (!orangefs_inode_cache) { |
631 | gossip_err("Cannot create orangefs_inode_cache\n"); | |
1182fca3 MM |
632 | return -ENOMEM; |
633 | } | |
634 | return 0; | |
635 | } | |
636 | ||
8bb8aefd | 637 | int orangefs_inode_cache_finalize(void) |
1182fca3 | 638 | { |
8bb8aefd | 639 | kmem_cache_destroy(orangefs_inode_cache); |
1182fca3 MM |
640 | return 0; |
641 | } |