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