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> | |
fc2e2e9c | 13 | #include <linux/hashtable.h> |
e41d12f5 | 14 | #include <linux/seq_file.h> |
1182fca3 | 15 | |
8bb8aefd YL |
16 | /* a cache for orangefs-inode objects (i.e. orangefs inode private data) */ |
17 | static struct kmem_cache *orangefs_inode_cache; | |
1182fca3 | 18 | |
8bb8aefd YL |
19 | /* list for storing orangefs specific superblocks in use */ |
20 | LIST_HEAD(orangefs_superblocks); | |
1182fca3 | 21 | |
8bb8aefd | 22 | DEFINE_SPINLOCK(orangefs_superblocks_lock); |
1182fca3 MM |
23 | |
24 | enum { | |
25 | Opt_intr, | |
26 | Opt_acl, | |
27 | Opt_local_lock, | |
28 | ||
29 | Opt_err | |
30 | }; | |
31 | ||
32 | static const match_table_t tokens = { | |
33 | { Opt_acl, "acl" }, | |
34 | { Opt_intr, "intr" }, | |
35 | { Opt_local_lock, "local_lock" }, | |
36 | { Opt_err, NULL } | |
37 | }; | |
38 | ||
482664dd | 39 | uint64_t orangefs_features; |
1182fca3 | 40 | |
4dfdb713 DH |
41 | static int orangefs_show_options(struct seq_file *m, struct dentry *root) |
42 | { | |
43 | struct orangefs_sb_info_s *orangefs_sb = ORANGEFS_SB(root->d_sb); | |
44 | ||
1751e8a6 | 45 | if (root->d_sb->s_flags & SB_POSIXACL) |
4dfdb713 DH |
46 | seq_puts(m, ",acl"); |
47 | if (orangefs_sb->flags & ORANGEFS_OPT_INTR) | |
48 | seq_puts(m, ",intr"); | |
49 | if (orangefs_sb->flags & ORANGEFS_OPT_LOCAL_LOCK) | |
50 | seq_puts(m, ",local_lock"); | |
51 | return 0; | |
52 | } | |
53 | ||
1182fca3 MM |
54 | static int parse_mount_options(struct super_block *sb, char *options, |
55 | int silent) | |
56 | { | |
8bb8aefd | 57 | struct orangefs_sb_info_s *orangefs_sb = ORANGEFS_SB(sb); |
1182fca3 MM |
58 | substring_t args[MAX_OPT_ARGS]; |
59 | char *p; | |
60 | ||
61 | /* | |
62 | * Force any potential flags that might be set from the mount | |
63 | * to zero, ie, initialize to unset. | |
64 | */ | |
1751e8a6 | 65 | sb->s_flags &= ~SB_POSIXACL; |
8bb8aefd YL |
66 | orangefs_sb->flags &= ~ORANGEFS_OPT_INTR; |
67 | orangefs_sb->flags &= ~ORANGEFS_OPT_LOCAL_LOCK; | |
1182fca3 MM |
68 | |
69 | while ((p = strsep(&options, ",")) != NULL) { | |
70 | int token; | |
71 | ||
72 | if (!*p) | |
73 | continue; | |
74 | ||
75 | token = match_token(p, tokens, args); | |
76 | switch (token) { | |
77 | case Opt_acl: | |
1751e8a6 | 78 | sb->s_flags |= SB_POSIXACL; |
1182fca3 MM |
79 | break; |
80 | case Opt_intr: | |
8bb8aefd | 81 | orangefs_sb->flags |= ORANGEFS_OPT_INTR; |
1182fca3 MM |
82 | break; |
83 | case Opt_local_lock: | |
8bb8aefd | 84 | orangefs_sb->flags |= ORANGEFS_OPT_LOCAL_LOCK; |
1182fca3 MM |
85 | break; |
86 | default: | |
87 | goto fail; | |
88 | } | |
89 | } | |
90 | ||
91 | return 0; | |
92 | fail: | |
93 | if (!silent) | |
94 | gossip_err("Error: mount option [%s] is not supported.\n", p); | |
95 | return -EINVAL; | |
96 | } | |
97 | ||
8bb8aefd | 98 | static void orangefs_inode_cache_ctor(void *req) |
1182fca3 | 99 | { |
8bb8aefd | 100 | struct orangefs_inode_s *orangefs_inode = req; |
1182fca3 | 101 | |
8bb8aefd YL |
102 | inode_init_once(&orangefs_inode->vfs_inode); |
103 | init_rwsem(&orangefs_inode->xattr_sem); | |
1182fca3 MM |
104 | } |
105 | ||
8bb8aefd | 106 | static struct inode *orangefs_alloc_inode(struct super_block *sb) |
1182fca3 | 107 | { |
8bb8aefd | 108 | struct orangefs_inode_s *orangefs_inode; |
1182fca3 | 109 | |
fd60b288 | 110 | orangefs_inode = alloc_inode_sb(sb, orangefs_inode_cache, GFP_KERNEL); |
07a25853 | 111 | if (!orangefs_inode) |
1182fca3 | 112 | return NULL; |
1182fca3 MM |
113 | |
114 | /* | |
115 | * We want to clear everything except for rw_semaphore and the | |
116 | * vfs_inode. | |
117 | */ | |
8bb8aefd YL |
118 | memset(&orangefs_inode->refn.khandle, 0, 16); |
119 | orangefs_inode->refn.fs_id = ORANGEFS_FS_ID_NULL; | |
120 | orangefs_inode->last_failed_block_index_read = 0; | |
121 | memset(orangefs_inode->link_target, 0, sizeof(orangefs_inode->link_target)); | |
1182fca3 MM |
122 | |
123 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
8bb8aefd YL |
124 | "orangefs_alloc_inode: allocated %p\n", |
125 | &orangefs_inode->vfs_inode); | |
126 | return &orangefs_inode->vfs_inode; | |
1182fca3 MM |
127 | } |
128 | ||
f276ae0d | 129 | static void orangefs_free_inode(struct inode *inode) |
0695d7dc | 130 | { |
0695d7dc | 131 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); |
fc2e2e9c MB |
132 | struct orangefs_cached_xattr *cx; |
133 | struct hlist_node *tmp; | |
134 | int i; | |
135 | ||
136 | hash_for_each_safe(orangefs_inode->xattr_cache, i, tmp, cx, node) { | |
137 | hlist_del(&cx->node); | |
138 | kfree(cx); | |
139 | } | |
140 | ||
0695d7dc PZ |
141 | kmem_cache_free(orangefs_inode_cache, orangefs_inode); |
142 | } | |
143 | ||
8bb8aefd | 144 | static void orangefs_destroy_inode(struct inode *inode) |
1182fca3 | 145 | { |
8bb8aefd | 146 | struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode); |
1182fca3 MM |
147 | |
148 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
149 | "%s: deallocated %p destroying inode %pU\n", | |
8bb8aefd | 150 | __func__, orangefs_inode, get_khandle_from_ino(inode)); |
1182fca3 MM |
151 | } |
152 | ||
df2d7337 MB |
153 | static int orangefs_write_inode(struct inode *inode, |
154 | struct writeback_control *wbc) | |
155 | { | |
df2d7337 | 156 | gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_write_inode\n"); |
afd9fb2a | 157 | return orangefs_inode_setattr(inode); |
df2d7337 MB |
158 | } |
159 | ||
1182fca3 MM |
160 | /* |
161 | * NOTE: information filled in here is typically reflected in the | |
162 | * output of the system command 'df' | |
163 | */ | |
8bb8aefd | 164 | static int orangefs_statfs(struct dentry *dentry, struct kstatfs *buf) |
1182fca3 MM |
165 | { |
166 | int ret = -ENOMEM; | |
8bb8aefd | 167 | struct orangefs_kernel_op_s *new_op = NULL; |
1182fca3 MM |
168 | int flags = 0; |
169 | struct super_block *sb = NULL; | |
170 | ||
171 | sb = dentry->d_sb; | |
172 | ||
173 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
95f5f88f MM |
174 | "%s: called on sb %p (fs_id is %d)\n", |
175 | __func__, | |
176 | sb, | |
177 | (int)(ORANGEFS_SB(sb)->fs_id)); | |
1182fca3 | 178 | |
8bb8aefd | 179 | new_op = op_alloc(ORANGEFS_VFS_OP_STATFS); |
1182fca3 MM |
180 | if (!new_op) |
181 | return ret; | |
8bb8aefd | 182 | new_op->upcall.req.statfs.fs_id = ORANGEFS_SB(sb)->fs_id; |
1182fca3 | 183 | |
8bb8aefd YL |
184 | if (ORANGEFS_SB(sb)->flags & ORANGEFS_OPT_INTR) |
185 | flags = ORANGEFS_OP_INTERRUPTIBLE; | |
1182fca3 | 186 | |
8bb8aefd | 187 | ret = service_operation(new_op, "orangefs_statfs", flags); |
1182fca3 MM |
188 | |
189 | if (new_op->downcall.status < 0) | |
190 | goto out_op_release; | |
191 | ||
192 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
be57366e MM |
193 | "%s: got %ld blocks available | " |
194 | "%ld blocks total | %ld block size | " | |
195 | "%ld files total | %ld files avail\n", | |
196 | __func__, | |
1182fca3 MM |
197 | (long)new_op->downcall.resp.statfs.blocks_avail, |
198 | (long)new_op->downcall.resp.statfs.blocks_total, | |
be57366e MM |
199 | (long)new_op->downcall.resp.statfs.block_size, |
200 | (long)new_op->downcall.resp.statfs.files_total, | |
201 | (long)new_op->downcall.resp.statfs.files_avail); | |
1182fca3 MM |
202 | |
203 | buf->f_type = sb->s_magic; | |
8bb8aefd | 204 | memcpy(&buf->f_fsid, &ORANGEFS_SB(sb)->fs_id, sizeof(buf->f_fsid)); |
1182fca3 | 205 | buf->f_bsize = new_op->downcall.resp.statfs.block_size; |
47b4948f | 206 | buf->f_namelen = ORANGEFS_NAME_MAX; |
1182fca3 MM |
207 | |
208 | buf->f_blocks = (sector_t) new_op->downcall.resp.statfs.blocks_total; | |
209 | buf->f_bfree = (sector_t) new_op->downcall.resp.statfs.blocks_avail; | |
210 | buf->f_bavail = (sector_t) new_op->downcall.resp.statfs.blocks_avail; | |
211 | buf->f_files = (sector_t) new_op->downcall.resp.statfs.files_total; | |
212 | buf->f_ffree = (sector_t) new_op->downcall.resp.statfs.files_avail; | |
0fdec1b3 | 213 | buf->f_frsize = 0; |
1182fca3 MM |
214 | |
215 | out_op_release: | |
216 | op_release(new_op); | |
95f5f88f | 217 | gossip_debug(GOSSIP_SUPER_DEBUG, "%s: returning %d\n", __func__, ret); |
1182fca3 MM |
218 | return ret; |
219 | } | |
220 | ||
221 | /* | |
222 | * Remount as initiated by VFS layer. We just need to reparse the mount | |
223 | * options, no need to signal pvfs2-client-core about it. | |
224 | */ | |
8bb8aefd | 225 | static int orangefs_remount_fs(struct super_block *sb, int *flags, char *data) |
1182fca3 | 226 | { |
8bb8aefd | 227 | gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_remount_fs: called\n"); |
1182fca3 MM |
228 | return parse_mount_options(sb, data, 1); |
229 | } | |
230 | ||
231 | /* | |
232 | * Remount as initiated by pvfs2-client-core on restart. This is used to | |
233 | * repopulate mount information left from previous pvfs2-client-core. | |
234 | * | |
235 | * the idea here is that given a valid superblock, we're | |
236 | * re-initializing the user space client with the initial mount | |
237 | * information specified when the super block was first initialized. | |
238 | * this is very different than the first initialization/creation of a | |
239 | * superblock. we use the special service_priority_operation to make | |
240 | * sure that the mount gets ahead of any other pending operation that | |
241 | * is waiting for servicing. this means that the pvfs2-client won't | |
242 | * fail to start several times for all other pending operations before | |
243 | * the client regains all of the mount information from us. | |
244 | * NOTE: this function assumes that the request_mutex is already acquired! | |
245 | */ | |
45996492 | 246 | int orangefs_remount(struct orangefs_sb_info_s *orangefs_sb) |
1182fca3 | 247 | { |
8bb8aefd | 248 | struct orangefs_kernel_op_s *new_op; |
1182fca3 MM |
249 | int ret = -EINVAL; |
250 | ||
8bb8aefd | 251 | gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_remount: called\n"); |
1182fca3 | 252 | |
8bb8aefd | 253 | new_op = op_alloc(ORANGEFS_VFS_OP_FS_MOUNT); |
1182fca3 MM |
254 | if (!new_op) |
255 | return -ENOMEM; | |
62917165 JS |
256 | strscpy(new_op->upcall.req.fs_mount.orangefs_config_server, |
257 | orangefs_sb->devname); | |
1182fca3 MM |
258 | |
259 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
8bb8aefd YL |
260 | "Attempting ORANGEFS Remount via host %s\n", |
261 | new_op->upcall.req.fs_mount.orangefs_config_server); | |
1182fca3 MM |
262 | |
263 | /* | |
adcf34a2 | 264 | * we assume that the calling function has already acquired the |
1182fca3 MM |
265 | * request_mutex to prevent other operations from bypassing |
266 | * this one | |
267 | */ | |
8bb8aefd | 268 | ret = service_operation(new_op, "orangefs_remount", |
adcf34a2 | 269 | ORANGEFS_OP_PRIORITY | ORANGEFS_OP_NO_MUTEX); |
1182fca3 | 270 | gossip_debug(GOSSIP_SUPER_DEBUG, |
8bb8aefd | 271 | "orangefs_remount: mount got return value of %d\n", |
1182fca3 MM |
272 | ret); |
273 | if (ret == 0) { | |
274 | /* | |
275 | * store the id assigned to this sb -- it's just a | |
276 | * short-lived mapping that the system interface uses | |
277 | * to map this superblock to a particular mount entry | |
278 | */ | |
45996492 AV |
279 | orangefs_sb->id = new_op->downcall.resp.fs_mount.id; |
280 | orangefs_sb->mount_pending = 0; | |
1182fca3 MM |
281 | } |
282 | ||
283 | op_release(new_op); | |
482664dd | 284 | |
f60fbdbf | 285 | if (orangefs_userspace_version >= 20906) { |
482664dd MB |
286 | new_op = op_alloc(ORANGEFS_VFS_OP_FEATURES); |
287 | if (!new_op) | |
288 | return -ENOMEM; | |
289 | new_op->upcall.req.features.features = 0; | |
cefdc26e MB |
290 | ret = service_operation(new_op, "orangefs_features", |
291 | ORANGEFS_OP_PRIORITY | ORANGEFS_OP_NO_MUTEX); | |
292 | if (!ret) | |
293 | orangefs_features = | |
294 | new_op->downcall.resp.features.features; | |
295 | else | |
296 | orangefs_features = 0; | |
482664dd MB |
297 | op_release(new_op); |
298 | } else { | |
299 | orangefs_features = 0; | |
300 | } | |
301 | ||
1182fca3 MM |
302 | return ret; |
303 | } | |
304 | ||
305 | int fsid_key_table_initialize(void) | |
306 | { | |
307 | return 0; | |
308 | } | |
309 | ||
310 | void fsid_key_table_finalize(void) | |
311 | { | |
312 | } | |
313 | ||
8bb8aefd YL |
314 | static const struct super_operations orangefs_s_ops = { |
315 | .alloc_inode = orangefs_alloc_inode, | |
f276ae0d | 316 | .free_inode = orangefs_free_inode, |
8bb8aefd | 317 | .destroy_inode = orangefs_destroy_inode, |
df2d7337 | 318 | .write_inode = orangefs_write_inode, |
1182fca3 | 319 | .drop_inode = generic_delete_inode, |
8bb8aefd YL |
320 | .statfs = orangefs_statfs, |
321 | .remount_fs = orangefs_remount_fs, | |
4dfdb713 | 322 | .show_options = orangefs_show_options, |
1182fca3 MM |
323 | }; |
324 | ||
8bb8aefd | 325 | static struct dentry *orangefs_fh_to_dentry(struct super_block *sb, |
1182fca3 MM |
326 | struct fid *fid, |
327 | int fh_len, | |
328 | int fh_type) | |
329 | { | |
8bb8aefd | 330 | struct orangefs_object_kref refn; |
1182fca3 MM |
331 | |
332 | if (fh_len < 5 || fh_type > 2) | |
333 | return NULL; | |
334 | ||
8bb8aefd | 335 | ORANGEFS_khandle_from(&(refn.khandle), fid->raw, 16); |
1182fca3 MM |
336 | refn.fs_id = (u32) fid->raw[4]; |
337 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
338 | "fh_to_dentry: handle %pU, fs_id %d\n", | |
339 | &refn.khandle, | |
340 | refn.fs_id); | |
341 | ||
8bb8aefd | 342 | return d_obtain_alias(orangefs_iget(sb, &refn)); |
1182fca3 MM |
343 | } |
344 | ||
8bb8aefd | 345 | static int orangefs_encode_fh(struct inode *inode, |
1182fca3 MM |
346 | __u32 *fh, |
347 | int *max_len, | |
348 | struct inode *parent) | |
349 | { | |
350 | int len = parent ? 10 : 5; | |
351 | int type = 1; | |
8bb8aefd | 352 | struct orangefs_object_kref refn; |
1182fca3 MM |
353 | |
354 | if (*max_len < len) { | |
79d7cd61 | 355 | gossip_err("fh buffer is too small for encoding\n"); |
1182fca3 MM |
356 | *max_len = len; |
357 | type = 255; | |
358 | goto out; | |
359 | } | |
360 | ||
8bb8aefd YL |
361 | refn = ORANGEFS_I(inode)->refn; |
362 | ORANGEFS_khandle_to(&refn.khandle, fh, 16); | |
1182fca3 MM |
363 | fh[4] = refn.fs_id; |
364 | ||
365 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
366 | "Encoding fh: handle %pU, fsid %u\n", | |
367 | &refn.khandle, | |
368 | refn.fs_id); | |
369 | ||
370 | ||
371 | if (parent) { | |
8bb8aefd YL |
372 | refn = ORANGEFS_I(parent)->refn; |
373 | ORANGEFS_khandle_to(&refn.khandle, (char *) fh + 20, 16); | |
1182fca3 MM |
374 | fh[9] = refn.fs_id; |
375 | ||
376 | type = 2; | |
377 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
378 | "Encoding parent: handle %pU, fsid %u\n", | |
379 | &refn.khandle, | |
380 | refn.fs_id); | |
381 | } | |
382 | *max_len = len; | |
383 | ||
384 | out: | |
385 | return type; | |
386 | } | |
387 | ||
acaca36d | 388 | static const struct export_operations orangefs_export_ops = { |
8bb8aefd YL |
389 | .encode_fh = orangefs_encode_fh, |
390 | .fh_to_dentry = orangefs_fh_to_dentry, | |
1182fca3 MM |
391 | }; |
392 | ||
9d286b0d MB |
393 | static int orangefs_unmount(int id, __s32 fs_id, const char *devname) |
394 | { | |
395 | struct orangefs_kernel_op_s *op; | |
396 | int r; | |
397 | op = op_alloc(ORANGEFS_VFS_OP_FS_UMOUNT); | |
398 | if (!op) | |
399 | return -ENOMEM; | |
400 | op->upcall.req.fs_umount.id = id; | |
401 | op->upcall.req.fs_umount.fs_id = fs_id; | |
62917165 | 402 | strscpy(op->upcall.req.fs_umount.orangefs_config_server, devname); |
9d286b0d MB |
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 | 414 | { |
f2d34c73 MB |
415 | int ret; |
416 | struct inode *root; | |
417 | struct dentry *root_dentry; | |
8bb8aefd | 418 | struct orangefs_object_kref root_object; |
1182fca3 | 419 | |
8bb8aefd | 420 | ORANGEFS_SB(sb)->sb = sb; |
1182fca3 | 421 | |
8bb8aefd YL |
422 | ORANGEFS_SB(sb)->root_khandle = fs_mount->root_khandle; |
423 | ORANGEFS_SB(sb)->fs_id = fs_mount->fs_id; | |
424 | ORANGEFS_SB(sb)->id = fs_mount->id; | |
1182fca3 | 425 | |
5c0dbbc6 AV |
426 | if (data) { |
427 | ret = parse_mount_options(sb, data, silent); | |
1182fca3 MM |
428 | if (ret) |
429 | return ret; | |
430 | } | |
431 | ||
432 | /* Hang the xattr handlers off the superblock */ | |
8bb8aefd YL |
433 | sb->s_xattr = orangefs_xattr_handlers; |
434 | sb->s_magic = ORANGEFS_SUPER_MAGIC; | |
435 | sb->s_op = &orangefs_s_ops; | |
436 | sb->s_d_op = &orangefs_dentry_operations; | |
1182fca3 | 437 | |
9f8fd53c MB |
438 | sb->s_blocksize = PAGE_SIZE; |
439 | sb->s_blocksize_bits = PAGE_SHIFT; | |
1182fca3 MM |
440 | sb->s_maxbytes = MAX_LFS_FILESIZE; |
441 | ||
f2d34c73 MB |
442 | ret = super_setup_bdi(sb); |
443 | if (ret) | |
444 | return ret; | |
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 | { | |
507874c0 | 477 | int ret; |
1182fca3 | 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 | ||
62917165 | 495 | strscpy(new_op->upcall.req.fs_mount.orangefs_config_server, devname); |
1182fca3 MM |
496 | |
497 | gossip_debug(GOSSIP_SUPER_DEBUG, | |
8bb8aefd YL |
498 | "Attempting ORANGEFS Mount via host %s\n", |
499 | new_op->upcall.req.fs_mount.orangefs_config_server); | |
1182fca3 | 500 | |
8bb8aefd | 501 | ret = service_operation(new_op, "orangefs_mount", 0); |
1182fca3 | 502 | gossip_debug(GOSSIP_SUPER_DEBUG, |
8bb8aefd | 503 | "orangefs_mount: mount got return value of %d\n", ret); |
1182fca3 MM |
504 | if (ret) |
505 | goto free_op; | |
506 | ||
8bb8aefd | 507 | if (new_op->downcall.resp.fs_mount.fs_id == ORANGEFS_FS_ID_NULL) { |
1182fca3 MM |
508 | gossip_err("ERROR: Retrieved null fs_id\n"); |
509 | ret = -EINVAL; | |
510 | goto free_op; | |
511 | } | |
512 | ||
1be21f86 MM |
513 | sb = sget(fst, NULL, set_anon_super, flags, NULL); |
514 | ||
515 | if (IS_ERR(sb)) { | |
516 | d = ERR_CAST(sb); | |
9d286b0d MB |
517 | orangefs_unmount(new_op->downcall.resp.fs_mount.id, |
518 | new_op->downcall.resp.fs_mount.fs_id, devname); | |
1182fca3 MM |
519 | goto free_op; |
520 | } | |
521 | ||
f2d34c73 MB |
522 | /* alloc and init our private orangefs sb info */ |
523 | sb->s_fs_info = kzalloc(sizeof(struct orangefs_sb_info_s), GFP_KERNEL); | |
524 | if (!ORANGEFS_SB(sb)) { | |
525 | d = ERR_PTR(-ENOMEM); | |
9bf93dcf | 526 | goto free_op; |
f2d34c73 MB |
527 | } |
528 | ||
8bb8aefd | 529 | ret = orangefs_fill_sb(sb, |
5c0dbbc6 | 530 | &new_op->downcall.resp.fs_mount, data, |
1751e8a6 | 531 | flags & SB_SILENT ? 1 : 0); |
1be21f86 MM |
532 | |
533 | if (ret) { | |
534 | d = ERR_PTR(ret); | |
1ec1688c | 535 | goto free_sb_and_op; |
1be21f86 | 536 | } |
1182fca3 MM |
537 | |
538 | /* | |
539 | * on successful mount, store the devname and data | |
540 | * used | |
541 | */ | |
62917165 JS |
542 | strscpy(ORANGEFS_SB(sb)->devname, devname); |
543 | ||
1182fca3 MM |
544 | |
545 | /* mount_pending must be cleared */ | |
8bb8aefd | 546 | ORANGEFS_SB(sb)->mount_pending = 0; |
1182fca3 MM |
547 | |
548 | /* | |
8bb8aefd | 549 | * finally, add this sb to our list of known orangefs |
1182fca3 MM |
550 | * sb's |
551 | */ | |
45996492 AV |
552 | gossip_debug(GOSSIP_SUPER_DEBUG, |
553 | "Adding SB %p to orangefs superblocks\n", | |
554 | ORANGEFS_SB(sb)); | |
555 | spin_lock(&orangefs_superblocks_lock); | |
556 | list_add_tail(&ORANGEFS_SB(sb)->list, &orangefs_superblocks); | |
557 | spin_unlock(&orangefs_superblocks_lock); | |
1182fca3 | 558 | op_release(new_op); |
482664dd | 559 | |
1ec1688c MB |
560 | /* Must be removed from the list now. */ |
561 | ORANGEFS_SB(sb)->no_list = 0; | |
562 | ||
f60fbdbf | 563 | if (orangefs_userspace_version >= 20906) { |
482664dd MB |
564 | new_op = op_alloc(ORANGEFS_VFS_OP_FEATURES); |
565 | if (!new_op) | |
566 | return ERR_PTR(-ENOMEM); | |
567 | new_op->upcall.req.features.features = 0; | |
568 | ret = service_operation(new_op, "orangefs_features", 0); | |
569 | orangefs_features = new_op->downcall.resp.features.features; | |
570 | op_release(new_op); | |
571 | } else { | |
572 | orangefs_features = 0; | |
573 | } | |
574 | ||
1be21f86 | 575 | return dget(sb->s_root); |
1182fca3 | 576 | |
1ec1688c MB |
577 | free_sb_and_op: |
578 | /* Will call orangefs_kill_sb with sb not in list. */ | |
579 | ORANGEFS_SB(sb)->no_list = 1; | |
9d286b0d | 580 | /* ORANGEFS_VFS_OP_FS_UMOUNT is done by orangefs_kill_sb. */ |
1ec1688c | 581 | deactivate_locked_super(sb); |
1182fca3 | 582 | free_op: |
8bb8aefd | 583 | gossip_err("orangefs_mount: mount request failed with %d\n", ret); |
1182fca3 | 584 | if (ret == -EINVAL) { |
8bb8aefd | 585 | gossip_err("Ensure that all orangefs-servers have the same FS configuration files\n"); |
1182fca3 MM |
586 | gossip_err("Look at pvfs2-client-core log file (typically /tmp/pvfs2-client.log) for more details\n"); |
587 | } | |
588 | ||
589 | op_release(new_op); | |
590 | ||
1be21f86 | 591 | return d; |
1182fca3 MM |
592 | } |
593 | ||
8bb8aefd | 594 | void orangefs_kill_sb(struct super_block *sb) |
1182fca3 | 595 | { |
9d286b0d | 596 | int r; |
8bb8aefd | 597 | gossip_debug(GOSSIP_SUPER_DEBUG, "orangefs_kill_sb: called\n"); |
1182fca3 | 598 | |
524b1d30 AV |
599 | /* provided sb cleanup */ |
600 | kill_anon_super(sb); | |
601 | ||
65903842 AV |
602 | if (!ORANGEFS_SB(sb)) { |
603 | mutex_lock(&orangefs_request_mutex); | |
604 | mutex_unlock(&orangefs_request_mutex); | |
605 | return; | |
606 | } | |
1182fca3 MM |
607 | /* |
608 | * issue the unmount to userspace to tell it to remove the | |
609 | * dynamic mount info it has for this superblock | |
610 | */ | |
9d286b0d MB |
611 | r = orangefs_unmount(ORANGEFS_SB(sb)->id, ORANGEFS_SB(sb)->fs_id, |
612 | ORANGEFS_SB(sb)->devname); | |
613 | if (!r) | |
614 | ORANGEFS_SB(sb)->mount_pending = 1; | |
1182fca3 | 615 | |
1ec1688c MB |
616 | if (!ORANGEFS_SB(sb)->no_list) { |
617 | /* remove the sb from our list of orangefs specific sb's */ | |
618 | spin_lock(&orangefs_superblocks_lock); | |
619 | /* not list_del_init */ | |
620 | __list_del_entry(&ORANGEFS_SB(sb)->list); | |
621 | ORANGEFS_SB(sb)->list.prev = NULL; | |
622 | spin_unlock(&orangefs_superblocks_lock); | |
623 | } | |
45996492 AV |
624 | |
625 | /* | |
626 | * make sure that ORANGEFS_DEV_REMOUNT_ALL loop that might've seen us | |
627 | * gets completed before we free the dang thing. | |
628 | */ | |
1d503617 MB |
629 | mutex_lock(&orangefs_request_mutex); |
630 | mutex_unlock(&orangefs_request_mutex); | |
1182fca3 | 631 | |
8bb8aefd YL |
632 | /* free the orangefs superblock private data */ |
633 | kfree(ORANGEFS_SB(sb)); | |
1182fca3 MM |
634 | } |
635 | ||
8bb8aefd | 636 | int orangefs_inode_cache_initialize(void) |
1182fca3 | 637 | { |
6b330623 DW |
638 | orangefs_inode_cache = kmem_cache_create_usercopy( |
639 | "orangefs_inode_cache", | |
640 | sizeof(struct orangefs_inode_s), | |
641 | 0, | |
3635d000 | 642 | 0, |
6b330623 DW |
643 | offsetof(struct orangefs_inode_s, |
644 | link_target), | |
645 | sizeof_field(struct orangefs_inode_s, | |
646 | link_target), | |
647 | orangefs_inode_cache_ctor); | |
1182fca3 | 648 | |
8bb8aefd YL |
649 | if (!orangefs_inode_cache) { |
650 | gossip_err("Cannot create orangefs_inode_cache\n"); | |
1182fca3 MM |
651 | return -ENOMEM; |
652 | } | |
653 | return 0; | |
654 | } | |
655 | ||
8bb8aefd | 656 | int orangefs_inode_cache_finalize(void) |
1182fca3 | 657 | { |
8bb8aefd | 658 | kmem_cache_destroy(orangefs_inode_cache); |
1182fca3 MM |
659 | return 0; |
660 | } |