]>
Commit | Line | Data |
---|---|---|
16725b9d SW |
1 | |
2 | #include "ceph_debug.h" | |
3 | ||
4 | #include <linux/backing-dev.h> | |
5 | #include <linux/fs.h> | |
6 | #include <linux/inet.h> | |
7 | #include <linux/in6.h> | |
8 | #include <linux/module.h> | |
9 | #include <linux/mount.h> | |
10 | #include <linux/parser.h> | |
16725b9d SW |
11 | #include <linux/sched.h> |
12 | #include <linux/seq_file.h> | |
5a0e3ad6 | 13 | #include <linux/slab.h> |
16725b9d SW |
14 | #include <linux/statfs.h> |
15 | #include <linux/string.h> | |
16725b9d | 16 | |
16725b9d SW |
17 | #include "decode.h" |
18 | #include "super.h" | |
19 | #include "mon_client.h" | |
0743304d | 20 | #include "auth.h" |
16725b9d SW |
21 | |
22 | /* | |
23 | * Ceph superblock operations | |
24 | * | |
25 | * Handle the basics of mounting, unmounting. | |
26 | */ | |
27 | ||
28 | ||
29 | /* | |
30 | * find filename portion of a path (/foo/bar/baz -> baz) | |
31 | */ | |
32 | const char *ceph_file_part(const char *s, int len) | |
33 | { | |
34 | const char *e = s + len; | |
35 | ||
36 | while (e != s && *(e-1) != '/') | |
37 | e--; | |
38 | return e; | |
39 | } | |
40 | ||
41 | ||
42 | /* | |
43 | * super ops | |
44 | */ | |
45 | static void ceph_put_super(struct super_block *s) | |
46 | { | |
5dfc589a | 47 | struct ceph_client *client = ceph_sb_to_client(s); |
16725b9d SW |
48 | |
49 | dout("put_super\n"); | |
5dfc589a SW |
50 | ceph_mdsc_close_sessions(&client->mdsc); |
51 | ||
52 | /* | |
53 | * ensure we release the bdi before put_anon_super releases | |
54 | * the device name. | |
55 | */ | |
56 | if (s->s_bdi == &client->backing_dev_info) { | |
57 | bdi_unregister(&client->backing_dev_info); | |
58 | s->s_bdi = NULL; | |
59 | } | |
60 | ||
16725b9d SW |
61 | return; |
62 | } | |
63 | ||
64 | static int ceph_statfs(struct dentry *dentry, struct kstatfs *buf) | |
65 | { | |
66 | struct ceph_client *client = ceph_inode_to_client(dentry->d_inode); | |
67 | struct ceph_monmap *monmap = client->monc.monmap; | |
68 | struct ceph_statfs st; | |
69 | u64 fsid; | |
70 | int err; | |
71 | ||
72 | dout("statfs\n"); | |
73 | err = ceph_monc_do_statfs(&client->monc, &st); | |
74 | if (err < 0) | |
75 | return err; | |
76 | ||
77 | /* fill in kstatfs */ | |
78 | buf->f_type = CEPH_SUPER_MAGIC; /* ?? */ | |
79 | ||
80 | /* | |
81 | * express utilization in terms of large blocks to avoid | |
82 | * overflow on 32-bit machines. | |
83 | */ | |
84 | buf->f_bsize = 1 << CEPH_BLOCK_SHIFT; | |
85 | buf->f_blocks = le64_to_cpu(st.kb) >> (CEPH_BLOCK_SHIFT-10); | |
86 | buf->f_bfree = (le64_to_cpu(st.kb) - le64_to_cpu(st.kb_used)) >> | |
87 | (CEPH_BLOCK_SHIFT-10); | |
88 | buf->f_bavail = le64_to_cpu(st.kb_avail) >> (CEPH_BLOCK_SHIFT-10); | |
89 | ||
90 | buf->f_files = le64_to_cpu(st.num_objects); | |
91 | buf->f_ffree = -1; | |
558d3499 | 92 | buf->f_namelen = NAME_MAX; |
16725b9d SW |
93 | buf->f_frsize = PAGE_CACHE_SIZE; |
94 | ||
95 | /* leave fsid little-endian, regardless of host endianness */ | |
96 | fsid = *(u64 *)(&monmap->fsid) ^ *((u64 *)&monmap->fsid + 1); | |
97 | buf->f_fsid.val[0] = fsid & 0xffffffff; | |
98 | buf->f_fsid.val[1] = fsid >> 32; | |
99 | ||
100 | return 0; | |
101 | } | |
102 | ||
103 | ||
104 | static int ceph_syncfs(struct super_block *sb, int wait) | |
105 | { | |
106 | dout("sync_fs %d\n", wait); | |
640ef79d CR |
107 | ceph_osdc_sync(&ceph_sb_to_client(sb)->osdc); |
108 | ceph_mdsc_sync(&ceph_sb_to_client(sb)->mdsc); | |
f2cf418c | 109 | dout("sync_fs %d done\n", wait); |
16725b9d SW |
110 | return 0; |
111 | } | |
112 | ||
6e19a16e SW |
113 | static int default_congestion_kb(void) |
114 | { | |
115 | int congestion_kb; | |
116 | ||
117 | /* | |
118 | * Copied from NFS | |
119 | * | |
120 | * congestion size, scale with available memory. | |
121 | * | |
122 | * 64MB: 8192k | |
123 | * 128MB: 11585k | |
124 | * 256MB: 16384k | |
125 | * 512MB: 23170k | |
126 | * 1GB: 32768k | |
127 | * 2GB: 46340k | |
128 | * 4GB: 65536k | |
129 | * 8GB: 92681k | |
130 | * 16GB: 131072k | |
131 | * | |
132 | * This allows larger machines to have larger/more transfers. | |
133 | * Limit the default to 256M | |
134 | */ | |
135 | congestion_kb = (16*int_sqrt(totalram_pages)) << (PAGE_SHIFT-10); | |
136 | if (congestion_kb > 256*1024) | |
137 | congestion_kb = 256*1024; | |
138 | ||
139 | return congestion_kb; | |
140 | } | |
16725b9d SW |
141 | |
142 | /** | |
143 | * ceph_show_options - Show mount options in /proc/mounts | |
144 | * @m: seq_file to write to | |
145 | * @mnt: mount descriptor | |
146 | */ | |
147 | static int ceph_show_options(struct seq_file *m, struct vfsmount *mnt) | |
148 | { | |
149 | struct ceph_client *client = ceph_sb_to_client(mnt->mnt_sb); | |
6b805185 | 150 | struct ceph_mount_args *args = client->mount_args; |
16725b9d SW |
151 | |
152 | if (args->flags & CEPH_OPT_FSID) | |
153 | seq_printf(m, ",fsidmajor=%llu,fsidminor%llu", | |
154 | le64_to_cpu(*(__le64 *)&args->fsid.fsid[0]), | |
155 | le64_to_cpu(*(__le64 *)&args->fsid.fsid[8])); | |
156 | if (args->flags & CEPH_OPT_NOSHARE) | |
157 | seq_puts(m, ",noshare"); | |
158 | if (args->flags & CEPH_OPT_DIRSTAT) | |
159 | seq_puts(m, ",dirstat"); | |
160 | if ((args->flags & CEPH_OPT_RBYTES) == 0) | |
161 | seq_puts(m, ",norbytes"); | |
162 | if (args->flags & CEPH_OPT_NOCRC) | |
163 | seq_puts(m, ",nocrc"); | |
164 | if (args->flags & CEPH_OPT_NOASYNCREADDIR) | |
165 | seq_puts(m, ",noasyncreaddir"); | |
6e19a16e SW |
166 | |
167 | if (args->mount_timeout != CEPH_MOUNT_TIMEOUT_DEFAULT) | |
168 | seq_printf(m, ",mount_timeout=%d", args->mount_timeout); | |
169 | if (args->osd_idle_ttl != CEPH_OSD_IDLE_TTL_DEFAULT) | |
170 | seq_printf(m, ",osd_idle_ttl=%d", args->osd_idle_ttl); | |
171 | if (args->osd_timeout != CEPH_OSD_TIMEOUT_DEFAULT) | |
172 | seq_printf(m, ",osdtimeout=%d", args->osd_timeout); | |
173 | if (args->osd_keepalive_timeout != CEPH_OSD_KEEPALIVE_DEFAULT) | |
174 | seq_printf(m, ",osdkeepalivetimeout=%d", | |
175 | args->osd_keepalive_timeout); | |
176 | if (args->wsize) | |
177 | seq_printf(m, ",wsize=%d", args->wsize); | |
178 | if (args->rsize != CEPH_MOUNT_RSIZE_DEFAULT) | |
179 | seq_printf(m, ",rsize=%d", args->rsize); | |
180 | if (args->congestion_kb != default_congestion_kb()) | |
181 | seq_printf(m, ",write_congestion_kb=%d", args->congestion_kb); | |
182 | if (args->caps_wanted_delay_min != CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT) | |
183 | seq_printf(m, ",caps_wanted_delay_min=%d", | |
184 | args->caps_wanted_delay_min); | |
185 | if (args->caps_wanted_delay_max != CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT) | |
186 | seq_printf(m, ",caps_wanted_delay_max=%d", | |
187 | args->caps_wanted_delay_max); | |
188 | if (args->cap_release_safety != CEPH_CAP_RELEASE_SAFETY_DEFAULT) | |
189 | seq_printf(m, ",cap_release_safety=%d", | |
190 | args->cap_release_safety); | |
191 | if (args->max_readdir != CEPH_MAX_READDIR_DEFAULT) | |
192 | seq_printf(m, ",readdir_max_entries=%d", args->max_readdir); | |
23804d91 SW |
193 | if (args->max_readdir_bytes != CEPH_MAX_READDIR_BYTES_DEFAULT) |
194 | seq_printf(m, ",readdir_max_bytes=%d", args->max_readdir_bytes); | |
16725b9d SW |
195 | if (strcmp(args->snapdir_name, CEPH_SNAPDIRNAME_DEFAULT)) |
196 | seq_printf(m, ",snapdirname=%s", args->snapdir_name); | |
4e7a5dcd SW |
197 | if (args->name) |
198 | seq_printf(m, ",name=%s", args->name); | |
16725b9d SW |
199 | if (args->secret) |
200 | seq_puts(m, ",secret=<hidden>"); | |
201 | return 0; | |
202 | } | |
203 | ||
204 | /* | |
205 | * caches | |
206 | */ | |
207 | struct kmem_cache *ceph_inode_cachep; | |
208 | struct kmem_cache *ceph_cap_cachep; | |
209 | struct kmem_cache *ceph_dentry_cachep; | |
210 | struct kmem_cache *ceph_file_cachep; | |
211 | ||
212 | static void ceph_inode_init_once(void *foo) | |
213 | { | |
214 | struct ceph_inode_info *ci = foo; | |
215 | inode_init_once(&ci->vfs_inode); | |
216 | } | |
217 | ||
218 | static int __init init_caches(void) | |
219 | { | |
220 | ceph_inode_cachep = kmem_cache_create("ceph_inode_info", | |
221 | sizeof(struct ceph_inode_info), | |
222 | __alignof__(struct ceph_inode_info), | |
223 | (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD), | |
224 | ceph_inode_init_once); | |
225 | if (ceph_inode_cachep == NULL) | |
226 | return -ENOMEM; | |
227 | ||
228 | ceph_cap_cachep = KMEM_CACHE(ceph_cap, | |
229 | SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD); | |
230 | if (ceph_cap_cachep == NULL) | |
231 | goto bad_cap; | |
232 | ||
233 | ceph_dentry_cachep = KMEM_CACHE(ceph_dentry_info, | |
234 | SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD); | |
235 | if (ceph_dentry_cachep == NULL) | |
236 | goto bad_dentry; | |
237 | ||
238 | ceph_file_cachep = KMEM_CACHE(ceph_file_info, | |
239 | SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD); | |
240 | if (ceph_file_cachep == NULL) | |
241 | goto bad_file; | |
242 | ||
243 | return 0; | |
244 | ||
245 | bad_file: | |
246 | kmem_cache_destroy(ceph_dentry_cachep); | |
247 | bad_dentry: | |
248 | kmem_cache_destroy(ceph_cap_cachep); | |
249 | bad_cap: | |
250 | kmem_cache_destroy(ceph_inode_cachep); | |
251 | return -ENOMEM; | |
252 | } | |
253 | ||
254 | static void destroy_caches(void) | |
255 | { | |
256 | kmem_cache_destroy(ceph_inode_cachep); | |
257 | kmem_cache_destroy(ceph_cap_cachep); | |
258 | kmem_cache_destroy(ceph_dentry_cachep); | |
259 | kmem_cache_destroy(ceph_file_cachep); | |
260 | } | |
261 | ||
262 | ||
263 | /* | |
264 | * ceph_umount_begin - initiate forced umount. Tear down down the | |
265 | * mount, skipping steps that may hang while waiting for server(s). | |
266 | */ | |
267 | static void ceph_umount_begin(struct super_block *sb) | |
268 | { | |
269 | struct ceph_client *client = ceph_sb_to_client(sb); | |
270 | ||
271 | dout("ceph_umount_begin - starting forced umount\n"); | |
272 | if (!client) | |
273 | return; | |
274 | client->mount_state = CEPH_MOUNT_SHUTDOWN; | |
275 | return; | |
276 | } | |
277 | ||
278 | static const struct super_operations ceph_super_ops = { | |
279 | .alloc_inode = ceph_alloc_inode, | |
280 | .destroy_inode = ceph_destroy_inode, | |
281 | .write_inode = ceph_write_inode, | |
282 | .sync_fs = ceph_syncfs, | |
283 | .put_super = ceph_put_super, | |
284 | .show_options = ceph_show_options, | |
285 | .statfs = ceph_statfs, | |
286 | .umount_begin = ceph_umount_begin, | |
287 | }; | |
288 | ||
289 | ||
290 | const char *ceph_msg_type_name(int type) | |
291 | { | |
292 | switch (type) { | |
293 | case CEPH_MSG_SHUTDOWN: return "shutdown"; | |
294 | case CEPH_MSG_PING: return "ping"; | |
4e7a5dcd SW |
295 | case CEPH_MSG_AUTH: return "auth"; |
296 | case CEPH_MSG_AUTH_REPLY: return "auth_reply"; | |
16725b9d SW |
297 | case CEPH_MSG_MON_MAP: return "mon_map"; |
298 | case CEPH_MSG_MON_GET_MAP: return "mon_get_map"; | |
299 | case CEPH_MSG_MON_SUBSCRIBE: return "mon_subscribe"; | |
300 | case CEPH_MSG_MON_SUBSCRIBE_ACK: return "mon_subscribe_ack"; | |
16725b9d SW |
301 | case CEPH_MSG_STATFS: return "statfs"; |
302 | case CEPH_MSG_STATFS_REPLY: return "statfs_reply"; | |
16725b9d SW |
303 | case CEPH_MSG_MDS_MAP: return "mds_map"; |
304 | case CEPH_MSG_CLIENT_SESSION: return "client_session"; | |
305 | case CEPH_MSG_CLIENT_RECONNECT: return "client_reconnect"; | |
306 | case CEPH_MSG_CLIENT_REQUEST: return "client_request"; | |
307 | case CEPH_MSG_CLIENT_REQUEST_FORWARD: return "client_request_forward"; | |
308 | case CEPH_MSG_CLIENT_REPLY: return "client_reply"; | |
309 | case CEPH_MSG_CLIENT_CAPS: return "client_caps"; | |
310 | case CEPH_MSG_CLIENT_CAPRELEASE: return "client_cap_release"; | |
311 | case CEPH_MSG_CLIENT_SNAP: return "client_snap"; | |
312 | case CEPH_MSG_CLIENT_LEASE: return "client_lease"; | |
16725b9d SW |
313 | case CEPH_MSG_OSD_MAP: return "osd_map"; |
314 | case CEPH_MSG_OSD_OP: return "osd_op"; | |
315 | case CEPH_MSG_OSD_OPREPLY: return "osd_opreply"; | |
316 | default: return "unknown"; | |
317 | } | |
318 | } | |
319 | ||
320 | ||
321 | /* | |
322 | * mount options | |
323 | */ | |
324 | enum { | |
325 | Opt_fsidmajor, | |
326 | Opt_fsidminor, | |
327 | Opt_monport, | |
328 | Opt_wsize, | |
329 | Opt_rsize, | |
330 | Opt_osdtimeout, | |
422d2cb8 | 331 | Opt_osdkeepalivetimeout, |
16725b9d | 332 | Opt_mount_timeout, |
f5a2041b | 333 | Opt_osd_idle_ttl, |
16725b9d SW |
334 | Opt_caps_wanted_delay_min, |
335 | Opt_caps_wanted_delay_max, | |
6e19a16e | 336 | Opt_cap_release_safety, |
16725b9d | 337 | Opt_readdir_max_entries, |
23804d91 | 338 | Opt_readdir_max_bytes, |
2baba250 | 339 | Opt_congestion_kb, |
e53c2fe0 | 340 | Opt_last_int, |
16725b9d SW |
341 | /* int args above */ |
342 | Opt_snapdirname, | |
4e7a5dcd | 343 | Opt_name, |
16725b9d | 344 | Opt_secret, |
e53c2fe0 | 345 | Opt_last_string, |
16725b9d SW |
346 | /* string args above */ |
347 | Opt_ip, | |
348 | Opt_noshare, | |
349 | Opt_dirstat, | |
350 | Opt_nodirstat, | |
351 | Opt_rbytes, | |
352 | Opt_norbytes, | |
353 | Opt_nocrc, | |
354 | Opt_noasyncreaddir, | |
355 | }; | |
356 | ||
357 | static match_table_t arg_tokens = { | |
358 | {Opt_fsidmajor, "fsidmajor=%ld"}, | |
359 | {Opt_fsidminor, "fsidminor=%ld"}, | |
360 | {Opt_monport, "monport=%d"}, | |
361 | {Opt_wsize, "wsize=%d"}, | |
362 | {Opt_rsize, "rsize=%d"}, | |
363 | {Opt_osdtimeout, "osdtimeout=%d"}, | |
422d2cb8 | 364 | {Opt_osdkeepalivetimeout, "osdkeepalive=%d"}, |
16725b9d | 365 | {Opt_mount_timeout, "mount_timeout=%d"}, |
f5a2041b | 366 | {Opt_osd_idle_ttl, "osd_idle_ttl=%d"}, |
16725b9d SW |
367 | {Opt_caps_wanted_delay_min, "caps_wanted_delay_min=%d"}, |
368 | {Opt_caps_wanted_delay_max, "caps_wanted_delay_max=%d"}, | |
6e19a16e | 369 | {Opt_cap_release_safety, "cap_release_safety=%d"}, |
16725b9d | 370 | {Opt_readdir_max_entries, "readdir_max_entries=%d"}, |
23804d91 | 371 | {Opt_readdir_max_bytes, "readdir_max_bytes=%d"}, |
2baba250 | 372 | {Opt_congestion_kb, "write_congestion_kb=%d"}, |
16725b9d SW |
373 | /* int args above */ |
374 | {Opt_snapdirname, "snapdirname=%s"}, | |
4e7a5dcd | 375 | {Opt_name, "name=%s"}, |
16725b9d SW |
376 | {Opt_secret, "secret=%s"}, |
377 | /* string args above */ | |
378 | {Opt_ip, "ip=%s"}, | |
379 | {Opt_noshare, "noshare"}, | |
380 | {Opt_dirstat, "dirstat"}, | |
381 | {Opt_nodirstat, "nodirstat"}, | |
382 | {Opt_rbytes, "rbytes"}, | |
383 | {Opt_norbytes, "norbytes"}, | |
384 | {Opt_nocrc, "nocrc"}, | |
385 | {Opt_noasyncreaddir, "noasyncreaddir"}, | |
386 | {-1, NULL} | |
387 | }; | |
388 | ||
389 | ||
6b805185 SW |
390 | static struct ceph_mount_args *parse_mount_args(int flags, char *options, |
391 | const char *dev_name, | |
392 | const char **path) | |
16725b9d | 393 | { |
6b805185 | 394 | struct ceph_mount_args *args; |
16725b9d | 395 | const char *c; |
6b805185 | 396 | int err = -ENOMEM; |
16725b9d | 397 | substring_t argstr[MAX_OPT_ARGS]; |
16725b9d | 398 | |
6b805185 SW |
399 | args = kzalloc(sizeof(*args), GFP_KERNEL); |
400 | if (!args) | |
401 | return ERR_PTR(-ENOMEM); | |
402 | args->mon_addr = kcalloc(CEPH_MAX_MON, sizeof(*args->mon_addr), | |
403 | GFP_KERNEL); | |
404 | if (!args->mon_addr) | |
405 | goto out; | |
16725b9d | 406 | |
6b805185 | 407 | dout("parse_mount_args %p, dev_name '%s'\n", args, dev_name); |
7b813c46 | 408 | |
16725b9d SW |
409 | /* start with defaults */ |
410 | args->sb_flags = flags; | |
411 | args->flags = CEPH_OPT_DEFAULT; | |
422d2cb8 YS |
412 | args->osd_timeout = CEPH_OSD_TIMEOUT_DEFAULT; |
413 | args->osd_keepalive_timeout = CEPH_OSD_KEEPALIVE_DEFAULT; | |
16725b9d | 414 | args->mount_timeout = CEPH_MOUNT_TIMEOUT_DEFAULT; /* seconds */ |
f5a2041b | 415 | args->osd_idle_ttl = CEPH_OSD_IDLE_TTL_DEFAULT; /* seconds */ |
16725b9d SW |
416 | args->caps_wanted_delay_min = CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT; |
417 | args->caps_wanted_delay_max = CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT; | |
8fa97655 | 418 | args->rsize = CEPH_MOUNT_RSIZE_DEFAULT; |
16725b9d | 419 | args->snapdir_name = kstrdup(CEPH_SNAPDIRNAME_DEFAULT, GFP_KERNEL); |
6e19a16e SW |
420 | args->cap_release_safety = CEPH_CAP_RELEASE_SAFETY_DEFAULT; |
421 | args->max_readdir = CEPH_MAX_READDIR_DEFAULT; | |
23804d91 | 422 | args->max_readdir_bytes = CEPH_MAX_READDIR_BYTES_DEFAULT; |
2baba250 | 423 | args->congestion_kb = default_congestion_kb(); |
16725b9d SW |
424 | |
425 | /* ip1[:port1][,ip2[:port2]...]:/subdir/in/fs */ | |
7b813c46 | 426 | err = -EINVAL; |
16725b9d | 427 | if (!dev_name) |
7b813c46 | 428 | goto out; |
16725b9d SW |
429 | *path = strstr(dev_name, ":/"); |
430 | if (*path == NULL) { | |
431 | pr_err("device name is missing path (no :/ in %s)\n", | |
432 | dev_name); | |
7b813c46 | 433 | goto out; |
16725b9d SW |
434 | } |
435 | ||
436 | /* get mon ip(s) */ | |
6b805185 SW |
437 | err = ceph_parse_ips(dev_name, *path, args->mon_addr, |
438 | CEPH_MAX_MON, &args->num_mon); | |
16725b9d | 439 | if (err < 0) |
7b813c46 | 440 | goto out; |
16725b9d | 441 | |
16725b9d SW |
442 | /* path on server */ |
443 | *path += 2; | |
444 | dout("server path '%s'\n", *path); | |
445 | ||
446 | /* parse mount options */ | |
447 | while ((c = strsep(&options, ",")) != NULL) { | |
448 | int token, intval, ret; | |
449 | if (!*c) | |
450 | continue; | |
7b813c46 | 451 | err = -EINVAL; |
16725b9d SW |
452 | token = match_token((char *)c, arg_tokens, argstr); |
453 | if (token < 0) { | |
454 | pr_err("bad mount option at '%s'\n", c); | |
7b813c46 | 455 | goto out; |
16725b9d | 456 | } |
e53c2fe0 | 457 | if (token < Opt_last_int) { |
16725b9d SW |
458 | ret = match_int(&argstr[0], &intval); |
459 | if (ret < 0) { | |
460 | pr_err("bad mount option arg (not int) " | |
461 | "at '%s'\n", c); | |
462 | continue; | |
463 | } | |
e53c2fe0 SW |
464 | dout("got int token %d val %d\n", token, intval); |
465 | } else if (token > Opt_last_int && token < Opt_last_string) { | |
466 | dout("got string token %d val %s\n", token, | |
467 | argstr[0].from); | |
468 | } else { | |
469 | dout("got token %d\n", token); | |
16725b9d SW |
470 | } |
471 | switch (token) { | |
472 | case Opt_fsidmajor: | |
473 | *(__le64 *)&args->fsid.fsid[0] = cpu_to_le64(intval); | |
474 | break; | |
475 | case Opt_fsidminor: | |
476 | *(__le64 *)&args->fsid.fsid[8] = cpu_to_le64(intval); | |
477 | break; | |
478 | case Opt_ip: | |
479 | err = ceph_parse_ips(argstr[0].from, | |
480 | argstr[0].to, | |
481 | &args->my_addr, | |
482 | 1, NULL); | |
483 | if (err < 0) | |
6b805185 | 484 | goto out; |
16725b9d SW |
485 | args->flags |= CEPH_OPT_MYIP; |
486 | break; | |
487 | ||
488 | case Opt_snapdirname: | |
489 | kfree(args->snapdir_name); | |
490 | args->snapdir_name = kstrndup(argstr[0].from, | |
491 | argstr[0].to-argstr[0].from, | |
492 | GFP_KERNEL); | |
493 | break; | |
4e7a5dcd SW |
494 | case Opt_name: |
495 | args->name = kstrndup(argstr[0].from, | |
496 | argstr[0].to-argstr[0].from, | |
497 | GFP_KERNEL); | |
498 | break; | |
16725b9d SW |
499 | case Opt_secret: |
500 | args->secret = kstrndup(argstr[0].from, | |
501 | argstr[0].to-argstr[0].from, | |
502 | GFP_KERNEL); | |
503 | break; | |
504 | ||
505 | /* misc */ | |
506 | case Opt_wsize: | |
507 | args->wsize = intval; | |
508 | break; | |
509 | case Opt_rsize: | |
510 | args->rsize = intval; | |
511 | break; | |
512 | case Opt_osdtimeout: | |
513 | args->osd_timeout = intval; | |
514 | break; | |
422d2cb8 YS |
515 | case Opt_osdkeepalivetimeout: |
516 | args->osd_keepalive_timeout = intval; | |
517 | break; | |
16725b9d SW |
518 | case Opt_mount_timeout: |
519 | args->mount_timeout = intval; | |
520 | break; | |
521 | case Opt_caps_wanted_delay_min: | |
522 | args->caps_wanted_delay_min = intval; | |
523 | break; | |
524 | case Opt_caps_wanted_delay_max: | |
525 | args->caps_wanted_delay_max = intval; | |
526 | break; | |
527 | case Opt_readdir_max_entries: | |
528 | args->max_readdir = intval; | |
529 | break; | |
23804d91 SW |
530 | case Opt_readdir_max_bytes: |
531 | args->max_readdir_bytes = intval; | |
532 | break; | |
2baba250 YS |
533 | case Opt_congestion_kb: |
534 | args->congestion_kb = intval; | |
535 | break; | |
16725b9d SW |
536 | |
537 | case Opt_noshare: | |
538 | args->flags |= CEPH_OPT_NOSHARE; | |
539 | break; | |
540 | ||
541 | case Opt_dirstat: | |
542 | args->flags |= CEPH_OPT_DIRSTAT; | |
543 | break; | |
544 | case Opt_nodirstat: | |
545 | args->flags &= ~CEPH_OPT_DIRSTAT; | |
546 | break; | |
547 | case Opt_rbytes: | |
548 | args->flags |= CEPH_OPT_RBYTES; | |
549 | break; | |
550 | case Opt_norbytes: | |
551 | args->flags &= ~CEPH_OPT_RBYTES; | |
552 | break; | |
553 | case Opt_nocrc: | |
554 | args->flags |= CEPH_OPT_NOCRC; | |
555 | break; | |
556 | case Opt_noasyncreaddir: | |
557 | args->flags |= CEPH_OPT_NOASYNCREADDIR; | |
558 | break; | |
559 | ||
560 | default: | |
561 | BUG_ON(token); | |
562 | } | |
563 | } | |
6b805185 | 564 | return args; |
16725b9d | 565 | |
7b813c46 | 566 | out: |
6b805185 SW |
567 | kfree(args->mon_addr); |
568 | kfree(args); | |
569 | return ERR_PTR(err); | |
16725b9d SW |
570 | } |
571 | ||
6b805185 | 572 | static void destroy_mount_args(struct ceph_mount_args *args) |
16725b9d | 573 | { |
6b805185 | 574 | dout("destroy_mount_args %p\n", args); |
16725b9d SW |
575 | kfree(args->snapdir_name); |
576 | args->snapdir_name = NULL; | |
4e7a5dcd SW |
577 | kfree(args->name); |
578 | args->name = NULL; | |
16725b9d SW |
579 | kfree(args->secret); |
580 | args->secret = NULL; | |
6b805185 | 581 | kfree(args); |
16725b9d SW |
582 | } |
583 | ||
584 | /* | |
585 | * create a fresh client instance | |
586 | */ | |
6b805185 | 587 | static struct ceph_client *ceph_create_client(struct ceph_mount_args *args) |
16725b9d SW |
588 | { |
589 | struct ceph_client *client; | |
590 | int err = -ENOMEM; | |
591 | ||
592 | client = kzalloc(sizeof(*client), GFP_KERNEL); | |
593 | if (client == NULL) | |
594 | return ERR_PTR(-ENOMEM); | |
595 | ||
596 | mutex_init(&client->mount_mutex); | |
597 | ||
9bd2e6f8 | 598 | init_waitqueue_head(&client->auth_wq); |
16725b9d SW |
599 | |
600 | client->sb = NULL; | |
601 | client->mount_state = CEPH_MOUNT_MOUNTING; | |
6b805185 | 602 | client->mount_args = args; |
16725b9d SW |
603 | |
604 | client->msgr = NULL; | |
605 | ||
9bd2e6f8 | 606 | client->auth_err = 0; |
2baba250 | 607 | atomic_long_set(&client->writeback_count, 0); |
16725b9d | 608 | |
859e7b14 SW |
609 | err = bdi_init(&client->backing_dev_info); |
610 | if (err < 0) | |
611 | goto fail; | |
612 | ||
16725b9d SW |
613 | err = -ENOMEM; |
614 | client->wb_wq = create_workqueue("ceph-writeback"); | |
615 | if (client->wb_wq == NULL) | |
859e7b14 | 616 | goto fail_bdi; |
16725b9d SW |
617 | client->pg_inv_wq = create_singlethread_workqueue("ceph-pg-invalid"); |
618 | if (client->pg_inv_wq == NULL) | |
619 | goto fail_wb_wq; | |
620 | client->trunc_wq = create_singlethread_workqueue("ceph-trunc"); | |
621 | if (client->trunc_wq == NULL) | |
622 | goto fail_pg_inv_wq; | |
623 | ||
b9bfb93c SW |
624 | /* set up mempools */ |
625 | err = -ENOMEM; | |
626 | client->wb_pagevec_pool = mempool_create_kmalloc_pool(10, | |
627 | client->mount_args->wsize >> PAGE_CACHE_SHIFT); | |
628 | if (!client->wb_pagevec_pool) | |
629 | goto fail_trunc_wq; | |
630 | ||
85ccce43 SW |
631 | /* caps */ |
632 | client->min_caps = args->max_readdir; | |
633 | ceph_adjust_min_caps(client->min_caps); | |
b9bfb93c | 634 | |
16725b9d SW |
635 | /* subsystems */ |
636 | err = ceph_monc_init(&client->monc, client); | |
637 | if (err < 0) | |
b9bfb93c | 638 | goto fail_mempool; |
16725b9d SW |
639 | err = ceph_osdc_init(&client->osdc, client); |
640 | if (err < 0) | |
641 | goto fail_monc; | |
5f44f142 SW |
642 | err = ceph_mdsc_init(&client->mdsc, client); |
643 | if (err < 0) | |
644 | goto fail_osdc; | |
16725b9d SW |
645 | return client; |
646 | ||
5f44f142 SW |
647 | fail_osdc: |
648 | ceph_osdc_stop(&client->osdc); | |
16725b9d SW |
649 | fail_monc: |
650 | ceph_monc_stop(&client->monc); | |
b9bfb93c SW |
651 | fail_mempool: |
652 | mempool_destroy(client->wb_pagevec_pool); | |
16725b9d SW |
653 | fail_trunc_wq: |
654 | destroy_workqueue(client->trunc_wq); | |
655 | fail_pg_inv_wq: | |
656 | destroy_workqueue(client->pg_inv_wq); | |
657 | fail_wb_wq: | |
658 | destroy_workqueue(client->wb_wq); | |
859e7b14 SW |
659 | fail_bdi: |
660 | bdi_destroy(&client->backing_dev_info); | |
16725b9d SW |
661 | fail: |
662 | kfree(client); | |
663 | return ERR_PTR(err); | |
664 | } | |
665 | ||
666 | static void ceph_destroy_client(struct ceph_client *client) | |
667 | { | |
668 | dout("destroy_client %p\n", client); | |
669 | ||
670 | /* unmount */ | |
671 | ceph_mdsc_stop(&client->mdsc); | |
16725b9d SW |
672 | ceph_osdc_stop(&client->osdc); |
673 | ||
a922d38f SW |
674 | /* |
675 | * make sure mds and osd connections close out before destroying | |
676 | * the auth module, which is needed to free those connections' | |
677 | * ceph_authorizers. | |
678 | */ | |
679 | ceph_msgr_flush(); | |
680 | ||
681 | ceph_monc_stop(&client->monc); | |
682 | ||
85ccce43 SW |
683 | ceph_adjust_min_caps(-client->min_caps); |
684 | ||
16725b9d SW |
685 | ceph_debugfs_client_cleanup(client); |
686 | destroy_workqueue(client->wb_wq); | |
687 | destroy_workqueue(client->pg_inv_wq); | |
688 | destroy_workqueue(client->trunc_wq); | |
689 | ||
5dfc589a SW |
690 | bdi_destroy(&client->backing_dev_info); |
691 | ||
16725b9d SW |
692 | if (client->msgr) |
693 | ceph_messenger_destroy(client->msgr); | |
b9bfb93c | 694 | mempool_destroy(client->wb_pagevec_pool); |
16725b9d | 695 | |
6b805185 | 696 | destroy_mount_args(client->mount_args); |
16725b9d SW |
697 | |
698 | kfree(client); | |
699 | dout("destroy_client %p done\n", client); | |
700 | } | |
701 | ||
0743304d SW |
702 | /* |
703 | * Initially learn our fsid, or verify an fsid matches. | |
704 | */ | |
705 | int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid) | |
706 | { | |
707 | if (client->have_fsid) { | |
708 | if (ceph_fsid_compare(&client->fsid, fsid)) { | |
9ec7cab1 SW |
709 | pr_err("bad fsid, had " FSID_FORMAT " got " FSID_FORMAT, |
710 | PR_FSID(&client->fsid), PR_FSID(fsid)); | |
0743304d SW |
711 | return -1; |
712 | } | |
713 | } else { | |
714 | pr_info("client%lld fsid " FSID_FORMAT "\n", | |
715 | client->monc.auth->global_id, PR_FSID(fsid)); | |
716 | memcpy(&client->fsid, fsid, sizeof(*fsid)); | |
717 | ceph_debugfs_client_init(client); | |
718 | client->have_fsid = true; | |
719 | } | |
720 | return 0; | |
721 | } | |
722 | ||
16725b9d SW |
723 | /* |
724 | * true if we have the mon map (and have thus joined the cluster) | |
725 | */ | |
6822d00b | 726 | static int have_mon_and_osd_map(struct ceph_client *client) |
16725b9d | 727 | { |
6822d00b SW |
728 | return client->monc.monmap && client->monc.monmap->epoch && |
729 | client->osdc.osdmap && client->osdc.osdmap->epoch; | |
16725b9d SW |
730 | } |
731 | ||
732 | /* | |
733 | * Bootstrap mount by opening the root directory. Note the mount | |
734 | * @started time from caller, and time out if this takes too long. | |
735 | */ | |
736 | static struct dentry *open_root_dentry(struct ceph_client *client, | |
737 | const char *path, | |
738 | unsigned long started) | |
739 | { | |
740 | struct ceph_mds_client *mdsc = &client->mdsc; | |
741 | struct ceph_mds_request *req = NULL; | |
742 | int err; | |
743 | struct dentry *root; | |
744 | ||
745 | /* open dir */ | |
746 | dout("open_root_inode opening '%s'\n", path); | |
747 | req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETATTR, USE_ANY_MDS); | |
748 | if (IS_ERR(req)) | |
7e34bc52 | 749 | return ERR_CAST(req); |
16725b9d SW |
750 | req->r_path1 = kstrdup(path, GFP_NOFS); |
751 | req->r_ino1.ino = CEPH_INO_ROOT; | |
752 | req->r_ino1.snap = CEPH_NOSNAP; | |
753 | req->r_started = started; | |
6b805185 | 754 | req->r_timeout = client->mount_args->mount_timeout * HZ; |
16725b9d SW |
755 | req->r_args.getattr.mask = cpu_to_le32(CEPH_STAT_CAP_INODE); |
756 | req->r_num_caps = 2; | |
757 | err = ceph_mdsc_do_request(mdsc, NULL, req); | |
758 | if (err == 0) { | |
759 | dout("open_root_inode success\n"); | |
760 | if (ceph_ino(req->r_target_inode) == CEPH_INO_ROOT && | |
761 | client->sb->s_root == NULL) | |
762 | root = d_alloc_root(req->r_target_inode); | |
763 | else | |
764 | root = d_obtain_alias(req->r_target_inode); | |
765 | req->r_target_inode = NULL; | |
766 | dout("open_root_inode success, root dentry is %p\n", root); | |
767 | } else { | |
768 | root = ERR_PTR(err); | |
769 | } | |
770 | ceph_mdsc_put_request(req); | |
771 | return root; | |
772 | } | |
773 | ||
774 | /* | |
775 | * mount: join the ceph cluster, and open root directory. | |
776 | */ | |
777 | static int ceph_mount(struct ceph_client *client, struct vfsmount *mnt, | |
778 | const char *path) | |
779 | { | |
780 | struct ceph_entity_addr *myaddr = NULL; | |
781 | int err; | |
6b805185 | 782 | unsigned long timeout = client->mount_args->mount_timeout * HZ; |
16725b9d SW |
783 | unsigned long started = jiffies; /* note the start time */ |
784 | struct dentry *root; | |
785 | ||
786 | dout("mount start\n"); | |
787 | mutex_lock(&client->mount_mutex); | |
788 | ||
789 | /* initialize the messenger */ | |
790 | if (client->msgr == NULL) { | |
791 | if (ceph_test_opt(client, MYIP)) | |
6b805185 | 792 | myaddr = &client->mount_args->my_addr; |
16725b9d SW |
793 | client->msgr = ceph_messenger_create(myaddr); |
794 | if (IS_ERR(client->msgr)) { | |
795 | err = PTR_ERR(client->msgr); | |
796 | client->msgr = NULL; | |
797 | goto out; | |
798 | } | |
799 | client->msgr->nocrc = ceph_test_opt(client, NOCRC); | |
800 | } | |
801 | ||
4e7a5dcd SW |
802 | /* open session, and wait for mon, mds, and osd maps */ |
803 | err = ceph_monc_open_session(&client->monc); | |
16725b9d SW |
804 | if (err < 0) |
805 | goto out; | |
806 | ||
6822d00b | 807 | while (!have_mon_and_osd_map(client)) { |
16725b9d SW |
808 | err = -EIO; |
809 | if (timeout && time_after_eq(jiffies, started + timeout)) | |
810 | goto out; | |
811 | ||
812 | /* wait */ | |
4e7a5dcd | 813 | dout("mount waiting for mon_map\n"); |
9bd2e6f8 | 814 | err = wait_event_interruptible_timeout(client->auth_wq, |
6822d00b SW |
815 | have_mon_and_osd_map(client) || (client->auth_err < 0), |
816 | timeout); | |
16725b9d SW |
817 | if (err == -EINTR || err == -ERESTARTSYS) |
818 | goto out; | |
9bd2e6f8 SW |
819 | if (client->auth_err < 0) { |
820 | err = client->auth_err; | |
dc14657c YS |
821 | goto out; |
822 | } | |
16725b9d SW |
823 | } |
824 | ||
825 | dout("mount opening root\n"); | |
826 | root = open_root_dentry(client, "", started); | |
827 | if (IS_ERR(root)) { | |
828 | err = PTR_ERR(root); | |
829 | goto out; | |
830 | } | |
831 | if (client->sb->s_root) | |
832 | dput(root); | |
833 | else | |
834 | client->sb->s_root = root; | |
835 | ||
836 | if (path[0] == 0) { | |
837 | dget(root); | |
838 | } else { | |
839 | dout("mount opening base mountpoint\n"); | |
840 | root = open_root_dentry(client, path, started); | |
841 | if (IS_ERR(root)) { | |
842 | err = PTR_ERR(root); | |
843 | dput(client->sb->s_root); | |
844 | client->sb->s_root = NULL; | |
845 | goto out; | |
846 | } | |
847 | } | |
848 | ||
849 | mnt->mnt_root = root; | |
850 | mnt->mnt_sb = client->sb; | |
851 | ||
852 | client->mount_state = CEPH_MOUNT_MOUNTED; | |
853 | dout("mount success\n"); | |
854 | err = 0; | |
855 | ||
856 | out: | |
857 | mutex_unlock(&client->mount_mutex); | |
858 | return err; | |
859 | } | |
860 | ||
861 | static int ceph_set_super(struct super_block *s, void *data) | |
862 | { | |
863 | struct ceph_client *client = data; | |
864 | int ret; | |
865 | ||
866 | dout("set_super %p data %p\n", s, data); | |
867 | ||
6b805185 | 868 | s->s_flags = client->mount_args->sb_flags; |
16725b9d SW |
869 | s->s_maxbytes = 1ULL << 40; /* temp value until we get mdsmap */ |
870 | ||
871 | s->s_fs_info = client; | |
872 | client->sb = s; | |
873 | ||
874 | s->s_op = &ceph_super_ops; | |
875 | s->s_export_op = &ceph_export_ops; | |
876 | ||
877 | s->s_time_gran = 1000; /* 1000 ns == 1 us */ | |
878 | ||
879 | ret = set_anon_super(s, NULL); /* what is that second arg for? */ | |
880 | if (ret != 0) | |
881 | goto fail; | |
882 | ||
883 | return ret; | |
884 | ||
885 | fail: | |
886 | s->s_fs_info = NULL; | |
887 | client->sb = NULL; | |
888 | return ret; | |
889 | } | |
890 | ||
891 | /* | |
892 | * share superblock if same fs AND options | |
893 | */ | |
894 | static int ceph_compare_super(struct super_block *sb, void *data) | |
895 | { | |
896 | struct ceph_client *new = data; | |
6b805185 | 897 | struct ceph_mount_args *args = new->mount_args; |
16725b9d SW |
898 | struct ceph_client *other = ceph_sb_to_client(sb); |
899 | int i; | |
900 | ||
901 | dout("ceph_compare_super %p\n", sb); | |
902 | if (args->flags & CEPH_OPT_FSID) { | |
903 | if (ceph_fsid_compare(&args->fsid, &other->fsid)) { | |
904 | dout("fsid doesn't match\n"); | |
905 | return 0; | |
906 | } | |
907 | } else { | |
908 | /* do we share (a) monitor? */ | |
909 | for (i = 0; i < new->monc.monmap->num_mon; i++) | |
910 | if (ceph_monmap_contains(other->monc.monmap, | |
911 | &new->monc.monmap->mon_inst[i].addr)) | |
912 | break; | |
913 | if (i == new->monc.monmap->num_mon) { | |
914 | dout("mon ip not part of monmap\n"); | |
915 | return 0; | |
916 | } | |
917 | dout("mon ip matches existing sb %p\n", sb); | |
918 | } | |
6b805185 | 919 | if (args->sb_flags != other->mount_args->sb_flags) { |
16725b9d SW |
920 | dout("flags differ\n"); |
921 | return 0; | |
922 | } | |
923 | return 1; | |
924 | } | |
925 | ||
926 | /* | |
927 | * construct our own bdi so we can control readahead, etc. | |
928 | */ | |
00d5643e | 929 | static atomic_long_t bdi_seq = ATOMIC_LONG_INIT(0); |
31e0cf8f | 930 | |
859e7b14 | 931 | static int ceph_register_bdi(struct super_block *sb, struct ceph_client *client) |
16725b9d SW |
932 | { |
933 | int err; | |
934 | ||
16725b9d | 935 | /* set ra_pages based on rsize mount option? */ |
6b805185 | 936 | if (client->mount_args->rsize >= PAGE_CACHE_SIZE) |
16725b9d | 937 | client->backing_dev_info.ra_pages = |
6b805185 | 938 | (client->mount_args->rsize + PAGE_CACHE_SIZE - 1) |
16725b9d | 939 | >> PAGE_SHIFT; |
31e0cf8f SW |
940 | err = bdi_register(&client->backing_dev_info, NULL, "ceph-%d", |
941 | atomic_long_inc_return(&bdi_seq)); | |
5dfc589a SW |
942 | if (!err) |
943 | sb->s_bdi = &client->backing_dev_info; | |
16725b9d SW |
944 | return err; |
945 | } | |
946 | ||
947 | static int ceph_get_sb(struct file_system_type *fs_type, | |
948 | int flags, const char *dev_name, void *data, | |
949 | struct vfsmount *mnt) | |
950 | { | |
951 | struct super_block *sb; | |
952 | struct ceph_client *client; | |
953 | int err; | |
954 | int (*compare_super)(struct super_block *, void *) = ceph_compare_super; | |
6a18be16 | 955 | const char *path = NULL; |
6b805185 | 956 | struct ceph_mount_args *args; |
16725b9d SW |
957 | |
958 | dout("ceph_get_sb\n"); | |
6b805185 SW |
959 | args = parse_mount_args(flags, data, dev_name, &path); |
960 | if (IS_ERR(args)) { | |
961 | err = PTR_ERR(args); | |
962 | goto out_final; | |
963 | } | |
16725b9d SW |
964 | |
965 | /* create client (which we may/may not use) */ | |
6b805185 SW |
966 | client = ceph_create_client(args); |
967 | if (IS_ERR(client)) { | |
968 | err = PTR_ERR(client); | |
969 | goto out_final; | |
970 | } | |
16725b9d | 971 | |
6b805185 | 972 | if (client->mount_args->flags & CEPH_OPT_NOSHARE) |
16725b9d SW |
973 | compare_super = NULL; |
974 | sb = sget(fs_type, compare_super, ceph_set_super, client); | |
975 | if (IS_ERR(sb)) { | |
976 | err = PTR_ERR(sb); | |
977 | goto out; | |
978 | } | |
979 | ||
640ef79d | 980 | if (ceph_sb_to_client(sb) != client) { |
16725b9d | 981 | ceph_destroy_client(client); |
640ef79d | 982 | client = ceph_sb_to_client(sb); |
16725b9d SW |
983 | dout("get_sb got existing client %p\n", client); |
984 | } else { | |
985 | dout("get_sb using new client %p\n", client); | |
859e7b14 | 986 | err = ceph_register_bdi(sb, client); |
16725b9d SW |
987 | if (err < 0) |
988 | goto out_splat; | |
989 | } | |
990 | ||
991 | err = ceph_mount(client, mnt, path); | |
992 | if (err < 0) | |
993 | goto out_splat; | |
994 | dout("root %p inode %p ino %llx.%llx\n", mnt->mnt_root, | |
995 | mnt->mnt_root->d_inode, ceph_vinop(mnt->mnt_root->d_inode)); | |
996 | return 0; | |
997 | ||
998 | out_splat: | |
999 | ceph_mdsc_close_sessions(&client->mdsc); | |
3981f2e2 | 1000 | deactivate_locked_super(sb); |
16725b9d SW |
1001 | goto out_final; |
1002 | ||
1003 | out: | |
1004 | ceph_destroy_client(client); | |
1005 | out_final: | |
1006 | dout("ceph_get_sb fail %d\n", err); | |
1007 | return err; | |
1008 | } | |
1009 | ||
1010 | static void ceph_kill_sb(struct super_block *s) | |
1011 | { | |
1012 | struct ceph_client *client = ceph_sb_to_client(s); | |
1013 | dout("kill_sb %p\n", s); | |
1014 | ceph_mdsc_pre_umount(&client->mdsc); | |
16725b9d | 1015 | kill_anon_super(s); /* will call put_super after sb is r/o */ |
16725b9d SW |
1016 | ceph_destroy_client(client); |
1017 | } | |
1018 | ||
1019 | static struct file_system_type ceph_fs_type = { | |
1020 | .owner = THIS_MODULE, | |
1021 | .name = "ceph", | |
1022 | .get_sb = ceph_get_sb, | |
1023 | .kill_sb = ceph_kill_sb, | |
1024 | .fs_flags = FS_RENAME_DOES_D_MOVE, | |
1025 | }; | |
1026 | ||
1027 | #define _STRINGIFY(x) #x | |
1028 | #define STRINGIFY(x) _STRINGIFY(x) | |
1029 | ||
1030 | static int __init init_ceph(void) | |
1031 | { | |
1032 | int ret = 0; | |
1033 | ||
1034 | ret = ceph_debugfs_init(); | |
1035 | if (ret < 0) | |
1036 | goto out; | |
1037 | ||
1038 | ret = ceph_msgr_init(); | |
1039 | if (ret < 0) | |
1040 | goto out_debugfs; | |
1041 | ||
1042 | ret = init_caches(); | |
1043 | if (ret) | |
1044 | goto out_msgr; | |
1045 | ||
1046 | ceph_caps_init(); | |
1047 | ||
1048 | ret = register_filesystem(&ceph_fs_type); | |
1049 | if (ret) | |
1050 | goto out_icache; | |
1051 | ||
c8f16584 SW |
1052 | pr_info("loaded (mon/mds/osd proto %d/%d/%d, osdmap %d/%d %d/%d)\n", |
1053 | CEPH_MONC_PROTOCOL, CEPH_MDSC_PROTOCOL, CEPH_OSDC_PROTOCOL, | |
1054 | CEPH_OSDMAP_VERSION, CEPH_OSDMAP_VERSION_EXT, | |
1055 | CEPH_OSDMAP_INC_VERSION, CEPH_OSDMAP_INC_VERSION_EXT); | |
16725b9d SW |
1056 | return 0; |
1057 | ||
1058 | out_icache: | |
1059 | destroy_caches(); | |
1060 | out_msgr: | |
1061 | ceph_msgr_exit(); | |
1062 | out_debugfs: | |
1063 | ceph_debugfs_cleanup(); | |
1064 | out: | |
1065 | return ret; | |
1066 | } | |
1067 | ||
1068 | static void __exit exit_ceph(void) | |
1069 | { | |
1070 | dout("exit_ceph\n"); | |
1071 | unregister_filesystem(&ceph_fs_type); | |
1072 | ceph_caps_finalize(); | |
1073 | destroy_caches(); | |
1074 | ceph_msgr_exit(); | |
1075 | ceph_debugfs_cleanup(); | |
1076 | } | |
1077 | ||
1078 | module_init(init_ceph); | |
1079 | module_exit(exit_ceph); | |
1080 | ||
1081 | MODULE_AUTHOR("Sage Weil <sage@newdream.net>"); | |
1082 | MODULE_AUTHOR("Yehuda Sadeh <yehuda@hq.newdream.net>"); | |
1083 | MODULE_AUTHOR("Patience Warnick <patience@newdream.net>"); | |
1084 | MODULE_DESCRIPTION("Ceph filesystem for Linux"); | |
1085 | MODULE_LICENSE("GPL"); |