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 | 37 | |
4dfdb713 DH |
38 | static int orangefs_show_options(struct seq_file *m, struct dentry *root) |
39 | { | |
40 | struct orangefs_sb_info_s *orangefs_sb = ORANGEFS_SB(root->d_sb); | |
41 | ||
42 | if (root->d_sb->s_flags & MS_POSIXACL) | |
43 | seq_puts(m, ",acl"); | |
44 | if (orangefs_sb->flags & ORANGEFS_OPT_INTR) | |
45 | seq_puts(m, ",intr"); | |
46 | if (orangefs_sb->flags & ORANGEFS_OPT_LOCAL_LOCK) | |
47 | seq_puts(m, ",local_lock"); | |
48 | return 0; | |
49 | } | |
50 | ||
1182fca3 MM |
51 | static int parse_mount_options(struct super_block *sb, char *options, |
52 | int silent) | |
53 | { | |
8bb8aefd | 54 | struct orangefs_sb_info_s *orangefs_sb = ORANGEFS_SB(sb); |
1182fca3 MM |
55 | substring_t args[MAX_OPT_ARGS]; |
56 | char *p; | |
57 | ||
58 | /* | |
59 | * Force any potential flags that might be set from the mount | |
60 | * to zero, ie, initialize to unset. | |
61 | */ | |
62 | sb->s_flags &= ~MS_POSIXACL; | |
8bb8aefd YL |
63 | orangefs_sb->flags &= ~ORANGEFS_OPT_INTR; |
64 | orangefs_sb->flags &= ~ORANGEFS_OPT_LOCAL_LOCK; | |
1182fca3 MM |
65 | |
66 | while ((p = strsep(&options, ",")) != NULL) { | |
67 | int token; | |
68 | ||
69 | if (!*p) | |
70 | continue; | |
71 | ||
72 | token = match_token(p, tokens, args); | |
73 | switch (token) { | |
74 | case Opt_acl: | |
75 | sb->s_flags |= MS_POSIXACL; | |
76 | break; | |
77 | case Opt_intr: | |
8bb8aefd | 78 | orangefs_sb->flags |= ORANGEFS_OPT_INTR; |
1182fca3 MM |
79 | break; |
80 | case Opt_local_lock: | |
8bb8aefd | 81 | orangefs_sb->flags |= ORANGEFS_OPT_LOCAL_LOCK; |
1182fca3 MM |
82 | break; |
83 | default: | |
84 | goto fail; | |
85 | } | |
86 | } | |
87 | ||
88 | return 0; | |
89 | fail: | |
90 | if (!silent) | |
91 | gossip_err("Error: mount option [%s] is not supported.\n", p); | |
92 | return -EINVAL; | |
93 | } | |
94 | ||
8bb8aefd | 95 | static void orangefs_inode_cache_ctor(void *req) |
1182fca3 | 96 | { |
8bb8aefd | 97 | struct orangefs_inode_s *orangefs_inode = req; |
1182fca3 | 98 | |
8bb8aefd YL |
99 | inode_init_once(&orangefs_inode->vfs_inode); |
100 | init_rwsem(&orangefs_inode->xattr_sem); | |
1182fca3 | 101 | |
8bb8aefd | 102 | orangefs_inode->vfs_inode.i_version = 1; |
1182fca3 MM |
103 | } |
104 | ||
8bb8aefd | 105 | static struct inode *orangefs_alloc_inode(struct super_block *sb) |
1182fca3 | 106 | { |
8bb8aefd | 107 | struct orangefs_inode_s *orangefs_inode; |
1182fca3 | 108 | |
2d4cae0d | 109 | orangefs_inode = kmem_cache_alloc(orangefs_inode_cache, GFP_KERNEL); |
8bb8aefd YL |
110 | if (orangefs_inode == NULL) { |
111 | gossip_err("Failed to allocate orangefs_inode\n"); | |
1182fca3 MM |
112 | return NULL; |
113 | } | |
114 | ||
115 | /* | |
116 | * We want to clear everything except for rw_semaphore and the | |
117 | * vfs_inode. | |
118 | */ | |
8bb8aefd YL |
119 | memset(&orangefs_inode->refn.khandle, 0, 16); |
120 | orangefs_inode->refn.fs_id = ORANGEFS_FS_ID_NULL; | |
121 | orangefs_inode->last_failed_block_index_read = 0; | |
122 | memset(orangefs_inode->link_target, 0, sizeof(orangefs_inode->link_target)); | |
123 | orangefs_inode->pinode_flags = 0; | |
1182fca3 MM |
124 | |
125 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
8bb8aefd YL |
126 | "orangefs_alloc_inode: allocated %p\n", |
127 | &orangefs_inode->vfs_inode); | |
128 | return &orangefs_inode->vfs_inode; | |
1182fca3 MM |
129 | } |
130 | ||
0695d7dc PZ |
131 | static void orangefs_i_callback(struct rcu_head *head) |
132 | { | |
133 | struct inode *inode = container_of(head, struct inode, i_rcu); | |
134 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); | |
135 | kmem_cache_free(orangefs_inode_cache, orangefs_inode); | |
136 | } | |
137 | ||
8bb8aefd | 138 | static void orangefs_destroy_inode(struct inode *inode) |
1182fca3 | 139 | { |
8bb8aefd | 140 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); |
1182fca3 MM |
141 | |
142 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
143 | "%s: deallocated %p destroying inode %pU\n", | |
8bb8aefd | 144 | __func__, orangefs_inode, get_khandle_from_ino(inode)); |
1182fca3 | 145 | |
0695d7dc | 146 | call_rcu(&inode->i_rcu, orangefs_i_callback); |
1182fca3 MM |
147 | } |
148 | ||
149 | /* | |
150 | * NOTE: information filled in here is typically reflected in the | |
151 | * output of the system command 'df' | |
152 | */ | |
8bb8aefd | 153 | static int orangefs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1182fca3 MM |
154 | { |
155 | int ret = -ENOMEM; | |
8bb8aefd | 156 | struct orangefs_kernel_op_s *new_op = NULL; |
1182fca3 MM |
157 | int flags = 0; |
158 | struct super_block *sb = NULL; | |
159 | ||
160 | sb = dentry->d_sb; | |
161 | ||
162 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
8bb8aefd | 163 | "orangefs_statfs: called on sb %p (fs_id is %d)\n", |
1182fca3 | 164 | sb, |
8bb8aefd | 165 | (int)(ORANGEFS_SB(sb)->fs_id)); |
1182fca3 | 166 | |
8bb8aefd | 167 | new_op = op_alloc(ORANGEFS_VFS_OP_STATFS); |
1182fca3 MM |
168 | if (!new_op) |
169 | return ret; | |
8bb8aefd | 170 | new_op->upcall.req.statfs.fs_id = ORANGEFS_SB(sb)->fs_id; |
1182fca3 | 171 | |
8bb8aefd YL |
172 | if (ORANGEFS_SB(sb)->flags & ORANGEFS_OPT_INTR) |
173 | flags = ORANGEFS_OP_INTERRUPTIBLE; | |
1182fca3 | 174 | |
8bb8aefd | 175 | ret = service_operation(new_op, "orangefs_statfs", flags); |
1182fca3 MM |
176 | |
177 | if (new_op->downcall.status < 0) | |
178 | goto out_op_release; | |
179 | ||
180 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
be57366e MM |
181 | "%s: got %ld blocks available | " |
182 | "%ld blocks total | %ld block size | " | |
183 | "%ld files total | %ld files avail\n", | |
184 | __func__, | |
1182fca3 MM |
185 | (long)new_op->downcall.resp.statfs.blocks_avail, |
186 | (long)new_op->downcall.resp.statfs.blocks_total, | |
be57366e MM |
187 | (long)new_op->downcall.resp.statfs.block_size, |
188 | (long)new_op->downcall.resp.statfs.files_total, | |
189 | (long)new_op->downcall.resp.statfs.files_avail); | |
1182fca3 MM |
190 | |
191 | buf->f_type = sb->s_magic; | |
8bb8aefd | 192 | memcpy(&buf->f_fsid, &ORANGEFS_SB(sb)->fs_id, sizeof(buf->f_fsid)); |
1182fca3 | 193 | buf->f_bsize = new_op->downcall.resp.statfs.block_size; |
47b4948f | 194 | buf->f_namelen = ORANGEFS_NAME_MAX; |
1182fca3 MM |
195 | |
196 | buf->f_blocks = (sector_t) new_op->downcall.resp.statfs.blocks_total; | |
197 | buf->f_bfree = (sector_t) new_op->downcall.resp.statfs.blocks_avail; | |
198 | buf->f_bavail = (sector_t) new_op->downcall.resp.statfs.blocks_avail; | |
199 | buf->f_files = (sector_t) new_op->downcall.resp.statfs.files_total; | |
200 | buf->f_ffree = (sector_t) new_op->downcall.resp.statfs.files_avail; | |
201 | buf->f_frsize = sb->s_blocksize; | |
202 | ||
203 | out_op_release: | |
204 | op_release(new_op); | |
8bb8aefd | 205 | gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_statfs: returning %d\n", ret); |
1182fca3 MM |
206 | return ret; |
207 | } | |
208 | ||
209 | /* | |
210 | * Remount as initiated by VFS layer. We just need to reparse the mount | |
211 | * options, no need to signal pvfs2-client-core about it. | |
212 | */ | |
8bb8aefd | 213 | static int orangefs_remount_fs(struct super_block *sb, int *flags, char *data) |
1182fca3 | 214 | { |
8bb8aefd | 215 | gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_remount_fs: called\n"); |
1182fca3 MM |
216 | return parse_mount_options(sb, data, 1); |
217 | } | |
218 | ||
219 | /* | |
220 | * Remount as initiated by pvfs2-client-core on restart. This is used to | |
221 | * repopulate mount information left from previous pvfs2-client-core. | |
222 | * | |
223 | * the idea here is that given a valid superblock, we're | |
224 | * re-initializing the user space client with the initial mount | |
225 | * information specified when the super block was first initialized. | |
226 | * this is very different than the first initialization/creation of a | |
227 | * superblock. we use the special service_priority_operation to make | |
228 | * sure that the mount gets ahead of any other pending operation that | |
229 | * is waiting for servicing. this means that the pvfs2-client won't | |
230 | * fail to start several times for all other pending operations before | |
231 | * the client regains all of the mount information from us. | |
232 | * NOTE: this function assumes that the request_mutex is already acquired! | |
233 | */ | |
45996492 | 234 | int orangefs_remount(struct orangefs_sb_info_s *orangefs_sb) |
1182fca3 | 235 | { |
8bb8aefd | 236 | struct orangefs_kernel_op_s *new_op; |
1182fca3 MM |
237 | int ret = -EINVAL; |
238 | ||
8bb8aefd | 239 | gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_remount: called\n"); |
1182fca3 | 240 | |
8bb8aefd | 241 | new_op = op_alloc(ORANGEFS_VFS_OP_FS_MOUNT); |
1182fca3 MM |
242 | if (!new_op) |
243 | return -ENOMEM; | |
8bb8aefd | 244 | strncpy(new_op->upcall.req.fs_mount.orangefs_config_server, |
45996492 | 245 | orangefs_sb->devname, |
8bb8aefd | 246 | ORANGEFS_MAX_SERVER_ADDR_LEN); |
1182fca3 MM |
247 | |
248 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
8bb8aefd YL |
249 | "Attempting ORANGEFS Remount via host %s\n", |
250 | new_op->upcall.req.fs_mount.orangefs_config_server); | |
1182fca3 MM |
251 | |
252 | /* | |
adcf34a2 | 253 | * we assume that the calling function has already acquired the |
1182fca3 MM |
254 | * request_mutex to prevent other operations from bypassing |
255 | * this one | |
256 | */ | |
8bb8aefd | 257 | ret = service_operation(new_op, "orangefs_remount", |
adcf34a2 | 258 | ORANGEFS_OP_PRIORITY | ORANGEFS_OP_NO_MUTEX); |
1182fca3 | 259 | gossip_debug(GOSSIP_SUPER_DEBUG, |
8bb8aefd | 260 | "orangefs_remount: mount got return value of %d\n", |
1182fca3 MM |
261 | ret); |
262 | if (ret == 0) { | |
263 | /* | |
264 | * store the id assigned to this sb -- it's just a | |
265 | * short-lived mapping that the system interface uses | |
266 | * to map this superblock to a particular mount entry | |
267 | */ | |
45996492 AV |
268 | orangefs_sb->id = new_op->downcall.resp.fs_mount.id; |
269 | orangefs_sb->mount_pending = 0; | |
1182fca3 MM |
270 | } |
271 | ||
272 | op_release(new_op); | |
482664dd | 273 | |
f60fbdbf | 274 | if (orangefs_userspace_version >= 20906) { |
482664dd MB |
275 | new_op = op_alloc(ORANGEFS_VFS_OP_FEATURES); |
276 | if (!new_op) | |
277 | return -ENOMEM; | |
278 | new_op->upcall.req.features.features = 0; | |
cefdc26e MB |
279 | ret = service_operation(new_op, "orangefs_features", |
280 | ORANGEFS_OP_PRIORITY | ORANGEFS_OP_NO_MUTEX); | |
281 | if (!ret) | |
282 | orangefs_features = | |
283 | new_op->downcall.resp.features.features; | |
284 | else | |
285 | orangefs_features = 0; | |
482664dd MB |
286 | op_release(new_op); |
287 | } else { | |
288 | orangefs_features = 0; | |
289 | } | |
290 | ||
1182fca3 MM |
291 | return ret; |
292 | } | |
293 | ||
294 | int fsid_key_table_initialize(void) | |
295 | { | |
296 | return 0; | |
297 | } | |
298 | ||
299 | void fsid_key_table_finalize(void) | |
300 | { | |
301 | } | |
302 | ||
303 | /* Called whenever the VFS dirties the inode in response to atime updates */ | |
8bb8aefd | 304 | static void orangefs_dirty_inode(struct inode *inode, int flags) |
1182fca3 | 305 | { |
8bb8aefd | 306 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); |
1182fca3 MM |
307 | |
308 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
8bb8aefd | 309 | "orangefs_dirty_inode: %pU\n", |
1182fca3 | 310 | get_khandle_from_ino(inode)); |
8bb8aefd | 311 | SetAtimeFlag(orangefs_inode); |
1182fca3 MM |
312 | } |
313 | ||
8bb8aefd YL |
314 | static const struct super_operations orangefs_s_ops = { |
315 | .alloc_inode = orangefs_alloc_inode, | |
316 | .destroy_inode = orangefs_destroy_inode, | |
317 | .dirty_inode = orangefs_dirty_inode, | |
1182fca3 | 318 | .drop_inode = generic_delete_inode, |
8bb8aefd YL |
319 | .statfs = orangefs_statfs, |
320 | .remount_fs = orangefs_remount_fs, | |
4dfdb713 | 321 | .show_options = orangefs_show_options, |
1182fca3 MM |
322 | }; |
323 | ||
8bb8aefd | 324 | static struct dentry *orangefs_fh_to_dentry(struct super_block *sb, |
1182fca3 MM |
325 | struct fid *fid, |
326 | int fh_len, | |
327 | int fh_type) | |
328 | { | |
8bb8aefd | 329 | struct orangefs_object_kref refn; |
1182fca3 MM |
330 | |
331 | if (fh_len < 5 || fh_type > 2) | |
332 | return NULL; | |
333 | ||
8bb8aefd | 334 | ORANGEFS_khandle_from(&(refn.khandle), fid->raw, 16); |
1182fca3 MM |
335 | refn.fs_id = (u32) fid->raw[4]; |
336 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
337 | "fh_to_dentry: handle %pU, fs_id %d\n", | |
338 | &refn.khandle, | |
339 | refn.fs_id); | |
340 | ||
8bb8aefd | 341 | return d_obtain_alias(orangefs_iget(sb, &refn)); |
1182fca3 MM |
342 | } |
343 | ||
8bb8aefd | 344 | static int orangefs_encode_fh(struct inode *inode, |
1182fca3 MM |
345 | __u32 *fh, |
346 | int *max_len, | |
347 | struct inode *parent) | |
348 | { | |
349 | int len = parent ? 10 : 5; | |
350 | int type = 1; | |
8bb8aefd | 351 | struct orangefs_object_kref refn; |
1182fca3 MM |
352 | |
353 | if (*max_len < len) { | |
354 | gossip_lerr("fh buffer is too small for encoding\n"); | |
355 | *max_len = len; | |
356 | type = 255; | |
357 | goto out; | |
358 | } | |
359 | ||
8bb8aefd YL |
360 | refn = ORANGEFS_I(inode)->refn; |
361 | ORANGEFS_khandle_to(&refn.khandle, fh, 16); | |
1182fca3 MM |
362 | fh[4] = refn.fs_id; |
363 | ||
364 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
365 | "Encoding fh: handle %pU, fsid %u\n", | |
366 | &refn.khandle, | |
367 | refn.fs_id); | |
368 | ||
369 | ||
370 | if (parent) { | |
8bb8aefd YL |
371 | refn = ORANGEFS_I(parent)->refn; |
372 | ORANGEFS_khandle_to(&refn.khandle, (char *) fh + 20, 16); | |
1182fca3 MM |
373 | fh[9] = refn.fs_id; |
374 | ||
375 | type = 2; | |
376 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
377 | "Encoding parent: handle %pU, fsid %u\n", | |
378 | &refn.khandle, | |
379 | refn.fs_id); | |
380 | } | |
381 | *max_len = len; | |
382 | ||
383 | out: | |
384 | return type; | |
385 | } | |
386 | ||
acaca36d | 387 | static const struct export_operations orangefs_export_ops = { |
8bb8aefd YL |
388 | .encode_fh = orangefs_encode_fh, |
389 | .fh_to_dentry = orangefs_fh_to_dentry, | |
1182fca3 MM |
390 | }; |
391 | ||
9d286b0d MB |
392 | static int orangefs_unmount(int id, __s32 fs_id, const char *devname) |
393 | { | |
394 | struct orangefs_kernel_op_s *op; | |
395 | int r; | |
396 | op = op_alloc(ORANGEFS_VFS_OP_FS_UMOUNT); | |
397 | if (!op) | |
398 | return -ENOMEM; | |
399 | op->upcall.req.fs_umount.id = id; | |
400 | op->upcall.req.fs_umount.fs_id = fs_id; | |
401 | strncpy(op->upcall.req.fs_umount.orangefs_config_server, | |
402 | devname, ORANGEFS_MAX_SERVER_ADDR_LEN); | |
403 | r = service_operation(op, "orangefs_fs_umount", 0); | |
404 | /* Not much to do about an error here. */ | |
405 | if (r) | |
406 | gossip_err("orangefs_unmount: service_operation %d\n", r); | |
407 | op_release(op); | |
408 | return r; | |
409 | } | |
410 | ||
8bb8aefd YL |
411 | static int orangefs_fill_sb(struct super_block *sb, |
412 | struct orangefs_fs_mount_response *fs_mount, | |
5c0dbbc6 | 413 | void *data, int silent) |
1182fca3 MM |
414 | { |
415 | int ret = -EINVAL; | |
416 | struct inode *root = NULL; | |
417 | struct dentry *root_dentry = NULL; | |
8bb8aefd | 418 | struct orangefs_object_kref root_object; |
1182fca3 | 419 | |
8bb8aefd | 420 | /* alloc and init our private orangefs sb info */ |
05d31c5c | 421 | sb->s_fs_info = kzalloc(sizeof(struct orangefs_sb_info_s), GFP_KERNEL); |
8bb8aefd | 422 | if (!ORANGEFS_SB(sb)) |
1182fca3 | 423 | return -ENOMEM; |
8bb8aefd | 424 | ORANGEFS_SB(sb)->sb = sb; |
1182fca3 | 425 | |
8bb8aefd YL |
426 | ORANGEFS_SB(sb)->root_khandle = fs_mount->root_khandle; |
427 | ORANGEFS_SB(sb)->fs_id = fs_mount->fs_id; | |
428 | ORANGEFS_SB(sb)->id = fs_mount->id; | |
1182fca3 | 429 | |
5c0dbbc6 AV |
430 | if (data) { |
431 | ret = parse_mount_options(sb, data, silent); | |
1182fca3 MM |
432 | if (ret) |
433 | return ret; | |
434 | } | |
435 | ||
436 | /* Hang the xattr handlers off the superblock */ | |
8bb8aefd YL |
437 | sb->s_xattr = orangefs_xattr_handlers; |
438 | sb->s_magic = ORANGEFS_SUPER_MAGIC; | |
439 | sb->s_op = &orangefs_s_ops; | |
440 | sb->s_d_op = &orangefs_dentry_operations; | |
1182fca3 | 441 | |
8bb8aefd YL |
442 | sb->s_blocksize = orangefs_bufmap_size_query(); |
443 | sb->s_blocksize_bits = orangefs_bufmap_shift_query(); | |
1182fca3 MM |
444 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
445 | ||
8bb8aefd YL |
446 | root_object.khandle = ORANGEFS_SB(sb)->root_khandle; |
447 | root_object.fs_id = ORANGEFS_SB(sb)->fs_id; | |
1182fca3 MM |
448 | gossip_debug(GOSSIP_SUPER_DEBUG, |
449 | "get inode %pU, fsid %d\n", | |
450 | &root_object.khandle, | |
451 | root_object.fs_id); | |
452 | ||
8bb8aefd | 453 | root = orangefs_iget(sb, &root_object); |
1182fca3 MM |
454 | if (IS_ERR(root)) |
455 | return PTR_ERR(root); | |
456 | ||
457 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
458 | "Allocated root inode [%p] with mode %x\n", | |
459 | root, | |
460 | root->i_mode); | |
461 | ||
462 | /* allocates and places root dentry in dcache */ | |
463 | root_dentry = d_make_root(root); | |
b05a7851 | 464 | if (!root_dentry) |
1182fca3 | 465 | return -ENOMEM; |
1182fca3 | 466 | |
8bb8aefd | 467 | sb->s_export_op = &orangefs_export_ops; |
1182fca3 MM |
468 | sb->s_root = root_dentry; |
469 | return 0; | |
470 | } | |
471 | ||
8bb8aefd | 472 | struct dentry *orangefs_mount(struct file_system_type *fst, |
1182fca3 MM |
473 | int flags, |
474 | const char *devname, | |
475 | void *data) | |
476 | { | |
477 | int ret = -EINVAL; | |
478 | struct super_block *sb = ERR_PTR(-EINVAL); | |
8bb8aefd | 479 | struct orangefs_kernel_op_s *new_op; |
1be21f86 | 480 | struct dentry *d = ERR_PTR(-EINVAL); |
1182fca3 MM |
481 | |
482 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
8bb8aefd | 483 | "orangefs_mount: called with devname %s\n", |
1182fca3 MM |
484 | devname); |
485 | ||
486 | if (!devname) { | |
487 | gossip_err("ERROR: device name not specified.\n"); | |
488 | return ERR_PTR(-EINVAL); | |
489 | } | |
490 | ||
8bb8aefd | 491 | new_op = op_alloc(ORANGEFS_VFS_OP_FS_MOUNT); |
1182fca3 MM |
492 | if (!new_op) |
493 | return ERR_PTR(-ENOMEM); | |
494 | ||
8bb8aefd | 495 | strncpy(new_op->upcall.req.fs_mount.orangefs_config_server, |
1182fca3 | 496 | devname, |
8bb8aefd | 497 | ORANGEFS_MAX_SERVER_ADDR_LEN); |
1182fca3 MM |
498 | |
499 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
8bb8aefd YL |
500 | "Attempting ORANGEFS Mount via host %s\n", |
501 | new_op->upcall.req.fs_mount.orangefs_config_server); | |
1182fca3 | 502 | |
8bb8aefd | 503 | ret = service_operation(new_op, "orangefs_mount", 0); |
1182fca3 | 504 | gossip_debug(GOSSIP_SUPER_DEBUG, |
8bb8aefd | 505 | "orangefs_mount: mount got return value of %d\n", ret); |
1182fca3 MM |
506 | if (ret) |
507 | goto free_op; | |
508 | ||
8bb8aefd | 509 | if (new_op->downcall.resp.fs_mount.fs_id == ORANGEFS_FS_ID_NULL) { |
1182fca3 MM |
510 | gossip_err("ERROR: Retrieved null fs_id\n"); |
511 | ret = -EINVAL; | |
512 | goto free_op; | |
513 | } | |
514 | ||
1be21f86 MM |
515 | sb = sget(fst, NULL, set_anon_super, flags, NULL); |
516 | ||
517 | if (IS_ERR(sb)) { | |
518 | d = ERR_CAST(sb); | |
9d286b0d MB |
519 | orangefs_unmount(new_op->downcall.resp.fs_mount.id, |
520 | new_op->downcall.resp.fs_mount.fs_id, devname); | |
1182fca3 MM |
521 | goto free_op; |
522 | } | |
523 | ||
8bb8aefd | 524 | ret = orangefs_fill_sb(sb, |
5c0dbbc6 | 525 | &new_op->downcall.resp.fs_mount, data, |
1be21f86 MM |
526 | flags & MS_SILENT ? 1 : 0); |
527 | ||
528 | if (ret) { | |
529 | d = ERR_PTR(ret); | |
1ec1688c | 530 | goto free_sb_and_op; |
1be21f86 | 531 | } |
1182fca3 MM |
532 | |
533 | /* | |
534 | * on successful mount, store the devname and data | |
535 | * used | |
536 | */ | |
8bb8aefd | 537 | strncpy(ORANGEFS_SB(sb)->devname, |
1182fca3 | 538 | devname, |
8bb8aefd | 539 | ORANGEFS_MAX_SERVER_ADDR_LEN); |
1182fca3 MM |
540 | |
541 | /* mount_pending must be cleared */ | |
8bb8aefd | 542 | ORANGEFS_SB(sb)->mount_pending = 0; |
1182fca3 MM |
543 | |
544 | /* | |
8bb8aefd | 545 | * finally, add this sb to our list of known orangefs |
1182fca3 MM |
546 | * sb's |
547 | */ | |
45996492 AV |
548 | gossip_debug(GOSSIP_SUPER_DEBUG, |
549 | "Adding SB %p to orangefs superblocks\n", | |
550 | ORANGEFS_SB(sb)); | |
551 | spin_lock(&orangefs_superblocks_lock); | |
552 | list_add_tail(&ORANGEFS_SB(sb)->list, &orangefs_superblocks); | |
553 | spin_unlock(&orangefs_superblocks_lock); | |
1182fca3 | 554 | op_release(new_op); |
482664dd | 555 | |
1ec1688c MB |
556 | /* Must be removed from the list now. */ |
557 | ORANGEFS_SB(sb)->no_list = 0; | |
558 | ||
f60fbdbf | 559 | if (orangefs_userspace_version >= 20906) { |
482664dd MB |
560 | new_op = op_alloc(ORANGEFS_VFS_OP_FEATURES); |
561 | if (!new_op) | |
562 | return ERR_PTR(-ENOMEM); | |
563 | new_op->upcall.req.features.features = 0; | |
564 | ret = service_operation(new_op, "orangefs_features", 0); | |
565 | orangefs_features = new_op->downcall.resp.features.features; | |
566 | op_release(new_op); | |
567 | } else { | |
568 | orangefs_features = 0; | |
569 | } | |
570 | ||
1be21f86 | 571 | return dget(sb->s_root); |
1182fca3 | 572 | |
1ec1688c MB |
573 | free_sb_and_op: |
574 | /* Will call orangefs_kill_sb with sb not in list. */ | |
575 | ORANGEFS_SB(sb)->no_list = 1; | |
9d286b0d | 576 | /* ORANGEFS_VFS_OP_FS_UMOUNT is done by orangefs_kill_sb. */ |
1ec1688c | 577 | deactivate_locked_super(sb); |
1182fca3 | 578 | free_op: |
8bb8aefd | 579 | gossip_err("orangefs_mount: mount request failed with %d\n", ret); |
1182fca3 | 580 | if (ret == -EINVAL) { |
8bb8aefd | 581 | gossip_err("Ensure that all orangefs-servers have the same FS configuration files\n"); |
1182fca3 MM |
582 | gossip_err("Look at pvfs2-client-core log file (typically /tmp/pvfs2-client.log) for more details\n"); |
583 | } | |
584 | ||
585 | op_release(new_op); | |
586 | ||
1be21f86 | 587 | return d; |
1182fca3 MM |
588 | } |
589 | ||
8bb8aefd | 590 | void orangefs_kill_sb(struct super_block *sb) |
1182fca3 | 591 | { |
9d286b0d | 592 | int r; |
8bb8aefd | 593 | gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_kill_sb: called\n"); |
1182fca3 | 594 | |
524b1d30 AV |
595 | /* provided sb cleanup */ |
596 | kill_anon_super(sb); | |
597 | ||
1182fca3 MM |
598 | /* |
599 | * issue the unmount to userspace to tell it to remove the | |
600 | * dynamic mount info it has for this superblock | |
601 | */ | |
9d286b0d MB |
602 | r = orangefs_unmount(ORANGEFS_SB(sb)->id, ORANGEFS_SB(sb)->fs_id, |
603 | ORANGEFS_SB(sb)->devname); | |
604 | if (!r) | |
605 | ORANGEFS_SB(sb)->mount_pending = 1; | |
1182fca3 | 606 | |
1ec1688c MB |
607 | if (!ORANGEFS_SB(sb)->no_list) { |
608 | /* remove the sb from our list of orangefs specific sb's */ | |
609 | spin_lock(&orangefs_superblocks_lock); | |
610 | /* not list_del_init */ | |
611 | __list_del_entry(&ORANGEFS_SB(sb)->list); | |
612 | ORANGEFS_SB(sb)->list.prev = NULL; | |
613 | spin_unlock(&orangefs_superblocks_lock); | |
614 | } | |
45996492 AV |
615 | |
616 | /* | |
617 | * make sure that ORANGEFS_DEV_REMOUNT_ALL loop that might've seen us | |
618 | * gets completed before we free the dang thing. | |
619 | */ | |
1d503617 MB |
620 | mutex_lock(&orangefs_request_mutex); |
621 | mutex_unlock(&orangefs_request_mutex); | |
1182fca3 | 622 | |
8bb8aefd YL |
623 | /* free the orangefs superblock private data */ |
624 | kfree(ORANGEFS_SB(sb)); | |
1182fca3 MM |
625 | } |
626 | ||
8bb8aefd | 627 | int orangefs_inode_cache_initialize(void) |
1182fca3 | 628 | { |
8bb8aefd YL |
629 | orangefs_inode_cache = kmem_cache_create("orangefs_inode_cache", |
630 | sizeof(struct orangefs_inode_s), | |
1182fca3 | 631 | 0, |
8bb8aefd YL |
632 | ORANGEFS_CACHE_CREATE_FLAGS, |
633 | orangefs_inode_cache_ctor); | |
1182fca3 | 634 | |
8bb8aefd YL |
635 | if (!orangefs_inode_cache) { |
636 | gossip_err("Cannot create orangefs_inode_cache\n"); | |
1182fca3 MM |
637 | return -ENOMEM; |
638 | } | |
639 | return 0; | |
640 | } | |
641 | ||
8bb8aefd | 642 | int orangefs_inode_cache_finalize(void) |
1182fca3 | 643 | { |
8bb8aefd | 644 | kmem_cache_destroy(orangefs_inode_cache); |
1182fca3 MM |
645 | return 0; |
646 | } |