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