Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Syscall interface to knfsd. |
3 | * | |
4 | * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de> | |
5 | */ | |
6 | ||
5a0e3ad6 | 7 | #include <linux/slab.h> |
3f8206d4 | 8 | #include <linux/namei.h> |
b41b66d6 | 9 | #include <linux/ctype.h> |
1da177e4 | 10 | |
80212d59 | 11 | #include <linux/sunrpc/svcsock.h> |
4373ea84 | 12 | #include <linux/lockd/lockd.h> |
4116092b | 13 | #include <linux/sunrpc/clnt.h> |
b0b0c0a2 | 14 | #include <linux/sunrpc/gss_api.h> |
b084f598 | 15 | #include <linux/sunrpc/gss_krb5_enctypes.h> |
813fd320 | 16 | #include <linux/sunrpc/rpc_pipe_fs.h> |
143cb494 | 17 | #include <linux/module.h> |
1da177e4 | 18 | |
2ca72e17 | 19 | #include "idmap.h" |
9a74af21 BH |
20 | #include "nfsd.h" |
21 | #include "cache.h" | |
f3c7521f | 22 | #include "state.h" |
7ea34ac1 | 23 | #include "netns.h" |
9a74af21 | 24 | |
1da177e4 | 25 | /* |
b0b0c0a2 | 26 | * We have a single directory with several nodes in it. |
1da177e4 LT |
27 | */ |
28 | enum { | |
29 | NFSD_Root = 1, | |
1da177e4 | 30 | NFSD_List, |
e8e8753f | 31 | NFSD_Export_features, |
1da177e4 | 32 | NFSD_Fh, |
4373ea84 | 33 | NFSD_FO_UnlockIP, |
17efa372 | 34 | NFSD_FO_UnlockFS, |
1da177e4 | 35 | NFSD_Threads, |
eed2965a | 36 | NFSD_Pool_Threads, |
03cf6c9f | 37 | NFSD_Pool_Stats, |
70c3b76c | 38 | NFSD_Versions, |
80212d59 | 39 | NFSD_Ports, |
596bbe53 | 40 | NFSD_MaxBlkSize, |
b0b0c0a2 | 41 | NFSD_SupportedEnctypes, |
70c3b76c N |
42 | /* |
43 | * The below MUST come last. Otherwise we leave a hole in nfsd_files[] | |
44 | * with !CONFIG_NFSD_V4 and simple_fill_super() goes oops | |
45 | */ | |
46 | #ifdef CONFIG_NFSD_V4 | |
1da177e4 | 47 | NFSD_Leasetime, |
efc4bb4f | 48 | NFSD_Gracetime, |
0964a3d3 | 49 | NFSD_RecoveryDir, |
70c3b76c | 50 | #endif |
1da177e4 LT |
51 | }; |
52 | ||
53 | /* | |
54 | * write() for these nodes. | |
55 | */ | |
1da177e4 | 56 | static ssize_t write_filehandle(struct file *file, char *buf, size_t size); |
b046ccdc CL |
57 | static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size); |
58 | static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size); | |
1da177e4 | 59 | static ssize_t write_threads(struct file *file, char *buf, size_t size); |
eed2965a | 60 | static ssize_t write_pool_threads(struct file *file, char *buf, size_t size); |
70c3b76c | 61 | static ssize_t write_versions(struct file *file, char *buf, size_t size); |
80212d59 | 62 | static ssize_t write_ports(struct file *file, char *buf, size_t size); |
596bbe53 | 63 | static ssize_t write_maxblksize(struct file *file, char *buf, size_t size); |
70c3b76c | 64 | #ifdef CONFIG_NFSD_V4 |
1da177e4 | 65 | static ssize_t write_leasetime(struct file *file, char *buf, size_t size); |
efc4bb4f | 66 | static ssize_t write_gracetime(struct file *file, char *buf, size_t size); |
0964a3d3 | 67 | static ssize_t write_recoverydir(struct file *file, char *buf, size_t size); |
70c3b76c | 68 | #endif |
1da177e4 LT |
69 | |
70 | static ssize_t (*write_op[])(struct file *, char *, size_t) = { | |
1da177e4 | 71 | [NFSD_Fh] = write_filehandle, |
b046ccdc CL |
72 | [NFSD_FO_UnlockIP] = write_unlock_ip, |
73 | [NFSD_FO_UnlockFS] = write_unlock_fs, | |
1da177e4 | 74 | [NFSD_Threads] = write_threads, |
eed2965a | 75 | [NFSD_Pool_Threads] = write_pool_threads, |
70c3b76c | 76 | [NFSD_Versions] = write_versions, |
80212d59 | 77 | [NFSD_Ports] = write_ports, |
596bbe53 | 78 | [NFSD_MaxBlkSize] = write_maxblksize, |
70c3b76c | 79 | #ifdef CONFIG_NFSD_V4 |
1da177e4 | 80 | [NFSD_Leasetime] = write_leasetime, |
efc4bb4f | 81 | [NFSD_Gracetime] = write_gracetime, |
0964a3d3 | 82 | [NFSD_RecoveryDir] = write_recoverydir, |
70c3b76c | 83 | #endif |
1da177e4 LT |
84 | }; |
85 | ||
86 | static ssize_t nfsctl_transaction_write(struct file *file, const char __user *buf, size_t size, loff_t *pos) | |
87 | { | |
7eaa36e2 | 88 | ino_t ino = file->f_path.dentry->d_inode->i_ino; |
1da177e4 LT |
89 | char *data; |
90 | ssize_t rv; | |
91 | ||
e8c96f8c | 92 | if (ino >= ARRAY_SIZE(write_op) || !write_op[ino]) |
1da177e4 LT |
93 | return -EINVAL; |
94 | ||
95 | data = simple_transaction_get(file, buf, size); | |
96 | if (IS_ERR(data)) | |
97 | return PTR_ERR(data); | |
98 | ||
99 | rv = write_op[ino](file, data, size); | |
8971a101 | 100 | if (rv >= 0) { |
1da177e4 LT |
101 | simple_transaction_set(file, rv); |
102 | rv = size; | |
103 | } | |
104 | return rv; | |
105 | } | |
106 | ||
7390022d N |
107 | static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size_t size, loff_t *pos) |
108 | { | |
109 | if (! file->private_data) { | |
110 | /* An attempt to read a transaction file without writing | |
111 | * causes a 0-byte write so that the file can return | |
112 | * state information | |
113 | */ | |
114 | ssize_t rv = nfsctl_transaction_write(file, buf, 0, pos); | |
115 | if (rv < 0) | |
116 | return rv; | |
117 | } | |
118 | return simple_transaction_read(file, buf, size, pos); | |
119 | } | |
120 | ||
4b6f5d20 | 121 | static const struct file_operations transaction_ops = { |
1da177e4 | 122 | .write = nfsctl_transaction_write, |
7390022d | 123 | .read = nfsctl_transaction_read, |
1da177e4 | 124 | .release = simple_transaction_release, |
6038f373 | 125 | .llseek = default_llseek, |
1da177e4 LT |
126 | }; |
127 | ||
1da177e4 LT |
128 | static int exports_open(struct inode *inode, struct file *file) |
129 | { | |
f2c7ea10 SK |
130 | int err; |
131 | struct seq_file *seq; | |
e5f06f72 | 132 | struct nfsd_net *nn = net_generic(&init_net, nfsd_net_id); |
f2c7ea10 SK |
133 | |
134 | err = seq_open(file, &nfs_exports_op); | |
135 | if (err) | |
136 | return err; | |
137 | ||
138 | seq = file->private_data; | |
e5f06f72 | 139 | seq->private = nn->svc_export_cache; |
f2c7ea10 | 140 | return 0; |
1da177e4 LT |
141 | } |
142 | ||
4b6f5d20 | 143 | static const struct file_operations exports_operations = { |
1da177e4 LT |
144 | .open = exports_open, |
145 | .read = seq_read, | |
146 | .llseek = seq_lseek, | |
147 | .release = seq_release, | |
9ef2db26 | 148 | .owner = THIS_MODULE, |
1da177e4 LT |
149 | }; |
150 | ||
e8e8753f BF |
151 | static int export_features_show(struct seq_file *m, void *v) |
152 | { | |
153 | seq_printf(m, "0x%x 0x%x\n", NFSEXP_ALLFLAGS, NFSEXP_SECINFO_FLAGS); | |
154 | return 0; | |
155 | } | |
156 | ||
157 | static int export_features_open(struct inode *inode, struct file *file) | |
158 | { | |
159 | return single_open(file, export_features_show, NULL); | |
160 | } | |
161 | ||
162 | static struct file_operations export_features_operations = { | |
163 | .open = export_features_open, | |
164 | .read = seq_read, | |
165 | .llseek = seq_lseek, | |
166 | .release = single_release, | |
167 | }; | |
168 | ||
b084f598 | 169 | #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE) |
b0b0c0a2 KC |
170 | static int supported_enctypes_show(struct seq_file *m, void *v) |
171 | { | |
b084f598 | 172 | seq_printf(m, KRB5_SUPPORTED_ENCTYPES); |
b0b0c0a2 KC |
173 | return 0; |
174 | } | |
175 | ||
176 | static int supported_enctypes_open(struct inode *inode, struct file *file) | |
177 | { | |
178 | return single_open(file, supported_enctypes_show, NULL); | |
179 | } | |
180 | ||
181 | static struct file_operations supported_enctypes_ops = { | |
182 | .open = supported_enctypes_open, | |
183 | .read = seq_read, | |
184 | .llseek = seq_lseek, | |
185 | .release = single_release, | |
186 | }; | |
b084f598 | 187 | #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */ |
b0b0c0a2 | 188 | |
828c0950 | 189 | static const struct file_operations pool_stats_operations = { |
03cf6c9f GB |
190 | .open = nfsd_pool_stats_open, |
191 | .read = seq_read, | |
192 | .llseek = seq_lseek, | |
ed2d8aed | 193 | .release = nfsd_pool_stats_release, |
03cf6c9f GB |
194 | .owner = THIS_MODULE, |
195 | }; | |
196 | ||
1da177e4 LT |
197 | /*----------------------------------------------------------------------------*/ |
198 | /* | |
199 | * payload - write methods | |
1da177e4 LT |
200 | */ |
201 | ||
1da177e4 | 202 | |
262a0982 CL |
203 | /** |
204 | * write_unlock_ip - Release all locks used by a client | |
205 | * | |
206 | * Experimental. | |
207 | * | |
208 | * Input: | |
209 | * buf: '\n'-terminated C string containing a | |
4116092b | 210 | * presentation format IP address |
262a0982 CL |
211 | * size: length of C string in @buf |
212 | * Output: | |
213 | * On success: returns zero if all specified locks were released; | |
214 | * returns one if one or more locks were not released | |
215 | * On error: return code is negative errno value | |
262a0982 | 216 | */ |
b046ccdc | 217 | static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size) |
4373ea84 | 218 | { |
4116092b CL |
219 | struct sockaddr_storage address; |
220 | struct sockaddr *sap = (struct sockaddr *)&address; | |
221 | size_t salen = sizeof(address); | |
367c8c7b | 222 | char *fo_path; |
4373ea84 WC |
223 | |
224 | /* sanity check */ | |
225 | if (size == 0) | |
226 | return -EINVAL; | |
227 | ||
228 | if (buf[size-1] != '\n') | |
229 | return -EINVAL; | |
230 | ||
231 | fo_path = buf; | |
232 | if (qword_get(&buf, fo_path, size) < 0) | |
233 | return -EINVAL; | |
234 | ||
90100b17 | 235 | if (rpc_pton(&init_net, fo_path, size, sap, salen) == 0) |
4373ea84 | 236 | return -EINVAL; |
4373ea84 | 237 | |
4116092b | 238 | return nlmsvc_unlock_all_by_ip(sap); |
4373ea84 WC |
239 | } |
240 | ||
262a0982 CL |
241 | /** |
242 | * write_unlock_fs - Release all locks on a local file system | |
243 | * | |
244 | * Experimental. | |
245 | * | |
246 | * Input: | |
247 | * buf: '\n'-terminated C string containing the | |
248 | * absolute pathname of a local file system | |
249 | * size: length of C string in @buf | |
250 | * Output: | |
251 | * On success: returns zero if all specified locks were released; | |
252 | * returns one if one or more locks were not released | |
253 | * On error: return code is negative errno value | |
254 | */ | |
b046ccdc | 255 | static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size) |
17efa372 | 256 | { |
a63bb996 | 257 | struct path path; |
17efa372 WC |
258 | char *fo_path; |
259 | int error; | |
260 | ||
261 | /* sanity check */ | |
262 | if (size == 0) | |
263 | return -EINVAL; | |
264 | ||
265 | if (buf[size-1] != '\n') | |
266 | return -EINVAL; | |
267 | ||
268 | fo_path = buf; | |
269 | if (qword_get(&buf, fo_path, size) < 0) | |
270 | return -EINVAL; | |
271 | ||
a63bb996 | 272 | error = kern_path(fo_path, 0, &path); |
17efa372 WC |
273 | if (error) |
274 | return error; | |
275 | ||
262a0982 CL |
276 | /* |
277 | * XXX: Needs better sanity checking. Otherwise we could end up | |
278 | * releasing locks on the wrong file system. | |
279 | * | |
280 | * For example: | |
281 | * 1. Does the path refer to a directory? | |
282 | * 2. Is that directory a mount point, or | |
283 | * 3. Is that directory the root of an exported file system? | |
284 | */ | |
d8c9584e | 285 | error = nlmsvc_unlock_all_by_sb(path.dentry->d_sb); |
17efa372 | 286 | |
a63bb996 | 287 | path_put(&path); |
17efa372 WC |
288 | return error; |
289 | } | |
290 | ||
262a0982 CL |
291 | /** |
292 | * write_filehandle - Get a variable-length NFS file handle by path | |
293 | * | |
294 | * On input, the buffer contains a '\n'-terminated C string comprised of | |
295 | * three alphanumeric words separated by whitespace. The string may | |
296 | * contain escape sequences. | |
297 | * | |
298 | * Input: | |
299 | * buf: | |
300 | * domain: client domain name | |
301 | * path: export pathname | |
302 | * maxsize: numeric maximum size of | |
303 | * @buf | |
304 | * size: length of C string in @buf | |
305 | * Output: | |
306 | * On success: passed-in buffer filled with '\n'-terminated C | |
307 | * string containing a ASCII hex text version | |
308 | * of the NFS file handle; | |
309 | * return code is the size in bytes of the string | |
310 | * On error: return code is negative errno value | |
311 | */ | |
1da177e4 LT |
312 | static ssize_t write_filehandle(struct file *file, char *buf, size_t size) |
313 | { | |
1da177e4 | 314 | char *dname, *path; |
246d95ba | 315 | int uninitialized_var(maxsize); |
1da177e4 LT |
316 | char *mesg = buf; |
317 | int len; | |
318 | struct auth_domain *dom; | |
319 | struct knfsd_fh fh; | |
320 | ||
87d26ea7 BF |
321 | if (size == 0) |
322 | return -EINVAL; | |
323 | ||
1da177e4 LT |
324 | if (buf[size-1] != '\n') |
325 | return -EINVAL; | |
326 | buf[size-1] = 0; | |
327 | ||
328 | dname = mesg; | |
329 | len = qword_get(&mesg, dname, size); | |
54224f04 CL |
330 | if (len <= 0) |
331 | return -EINVAL; | |
1da177e4 LT |
332 | |
333 | path = dname+len+1; | |
334 | len = qword_get(&mesg, path, size); | |
54224f04 CL |
335 | if (len <= 0) |
336 | return -EINVAL; | |
1da177e4 LT |
337 | |
338 | len = get_int(&mesg, &maxsize); | |
339 | if (len) | |
340 | return len; | |
341 | ||
342 | if (maxsize < NFS_FHSIZE) | |
343 | return -EINVAL; | |
344 | if (maxsize > NFS3_FHSIZE) | |
345 | maxsize = NFS3_FHSIZE; | |
346 | ||
347 | if (qword_get(&mesg, mesg, size)>0) | |
348 | return -EINVAL; | |
349 | ||
350 | /* we have all the words, they are in buf.. */ | |
351 | dom = unix_domain_find(dname); | |
352 | if (!dom) | |
353 | return -ENOMEM; | |
354 | ||
b3853e0e | 355 | len = exp_rootfh(&init_net, dom, path, &fh, maxsize); |
1da177e4 LT |
356 | auth_domain_put(dom); |
357 | if (len) | |
358 | return len; | |
359 | ||
54224f04 CL |
360 | mesg = buf; |
361 | len = SIMPLE_TRANSACTION_LIMIT; | |
1da177e4 LT |
362 | qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size); |
363 | mesg[-1] = '\n'; | |
364 | return mesg - buf; | |
365 | } | |
366 | ||
262a0982 CL |
367 | /** |
368 | * write_threads - Start NFSD, or report the current number of running threads | |
369 | * | |
370 | * Input: | |
371 | * buf: ignored | |
372 | * size: zero | |
373 | * Output: | |
374 | * On success: passed-in buffer filled with '\n'-terminated C | |
375 | * string numeric value representing the number of | |
376 | * running NFSD threads; | |
377 | * return code is the size in bytes of the string | |
378 | * On error: return code is zero | |
379 | * | |
380 | * OR | |
381 | * | |
382 | * Input: | |
383 | * buf: C string containing an unsigned | |
384 | * integer value representing the | |
385 | * number of NFSD threads to start | |
386 | * size: non-zero length of C string in @buf | |
387 | * Output: | |
388 | * On success: NFS service is started; | |
389 | * passed-in buffer filled with '\n'-terminated C | |
390 | * string numeric value representing the number of | |
391 | * running NFSD threads; | |
392 | * return code is the size in bytes of the string | |
393 | * On error: return code is zero or a negative errno value | |
394 | */ | |
1da177e4 LT |
395 | static ssize_t write_threads(struct file *file, char *buf, size_t size) |
396 | { | |
1da177e4 LT |
397 | char *mesg = buf; |
398 | int rv; | |
d41a9417 SK |
399 | struct net *net = &init_net; |
400 | ||
1da177e4 LT |
401 | if (size > 0) { |
402 | int newthreads; | |
403 | rv = get_int(&mesg, &newthreads); | |
404 | if (rv) | |
405 | return rv; | |
9e074856 | 406 | if (newthreads < 0) |
1da177e4 | 407 | return -EINVAL; |
d41a9417 | 408 | rv = nfsd_svc(newthreads, net); |
82e12fe9 | 409 | if (rv < 0) |
1da177e4 | 410 | return rv; |
82e12fe9 | 411 | } else |
9dd9845f | 412 | rv = nfsd_nrthreads(net); |
e06b6405 | 413 | |
82e12fe9 | 414 | return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", rv); |
1da177e4 LT |
415 | } |
416 | ||
262a0982 CL |
417 | /** |
418 | * write_pool_threads - Set or report the current number of threads per pool | |
419 | * | |
420 | * Input: | |
421 | * buf: ignored | |
422 | * size: zero | |
423 | * | |
424 | * OR | |
425 | * | |
426 | * Input: | |
427 | * buf: C string containing whitespace- | |
428 | * separated unsigned integer values | |
429 | * representing the number of NFSD | |
430 | * threads to start in each pool | |
431 | * size: non-zero length of C string in @buf | |
432 | * Output: | |
433 | * On success: passed-in buffer filled with '\n'-terminated C | |
434 | * string containing integer values representing the | |
435 | * number of NFSD threads in each pool; | |
436 | * return code is the size in bytes of the string | |
437 | * On error: return code is zero or a negative errno value | |
438 | */ | |
eed2965a GB |
439 | static ssize_t write_pool_threads(struct file *file, char *buf, size_t size) |
440 | { | |
441 | /* if size > 0, look for an array of number of threads per node | |
442 | * and apply them then write out number of threads per node as reply | |
443 | */ | |
444 | char *mesg = buf; | |
445 | int i; | |
446 | int rv; | |
447 | int len; | |
bedbdd8b | 448 | int npools; |
eed2965a | 449 | int *nthreads; |
3938a0d5 | 450 | struct net *net = &init_net; |
eed2965a | 451 | |
bedbdd8b | 452 | mutex_lock(&nfsd_mutex); |
9dd9845f | 453 | npools = nfsd_nrpools(net); |
eed2965a GB |
454 | if (npools == 0) { |
455 | /* | |
456 | * NFS is shut down. The admin can start it by | |
457 | * writing to the threads file but NOT the pool_threads | |
458 | * file, sorry. Report zero threads. | |
459 | */ | |
bedbdd8b | 460 | mutex_unlock(&nfsd_mutex); |
eed2965a GB |
461 | strcpy(buf, "0\n"); |
462 | return strlen(buf); | |
463 | } | |
464 | ||
465 | nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL); | |
bedbdd8b | 466 | rv = -ENOMEM; |
eed2965a | 467 | if (nthreads == NULL) |
bedbdd8b | 468 | goto out_free; |
eed2965a GB |
469 | |
470 | if (size > 0) { | |
471 | for (i = 0; i < npools; i++) { | |
472 | rv = get_int(&mesg, &nthreads[i]); | |
473 | if (rv == -ENOENT) | |
474 | break; /* fewer numbers than pools */ | |
475 | if (rv) | |
476 | goto out_free; /* syntax error */ | |
477 | rv = -EINVAL; | |
478 | if (nthreads[i] < 0) | |
479 | goto out_free; | |
480 | } | |
3938a0d5 | 481 | rv = nfsd_set_nrthreads(i, nthreads, net); |
eed2965a GB |
482 | if (rv) |
483 | goto out_free; | |
484 | } | |
485 | ||
9dd9845f | 486 | rv = nfsd_get_nrthreads(npools, nthreads, net); |
eed2965a GB |
487 | if (rv) |
488 | goto out_free; | |
489 | ||
490 | mesg = buf; | |
491 | size = SIMPLE_TRANSACTION_LIMIT; | |
492 | for (i = 0; i < npools && size > 0; i++) { | |
493 | snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? '\n' : ' ')); | |
494 | len = strlen(mesg); | |
495 | size -= len; | |
496 | mesg += len; | |
497 | } | |
413d63d7 | 498 | rv = mesg - buf; |
eed2965a GB |
499 | out_free: |
500 | kfree(nthreads); | |
bedbdd8b | 501 | mutex_unlock(&nfsd_mutex); |
eed2965a GB |
502 | return rv; |
503 | } | |
504 | ||
3dd98a3b | 505 | static ssize_t __write_versions(struct file *file, char *buf, size_t size) |
70c3b76c | 506 | { |
70c3b76c | 507 | char *mesg = buf; |
8daf220a | 508 | char *vers, *minorp, sign; |
261758b5 | 509 | int len, num, remaining; |
8daf220a | 510 | unsigned minor; |
70c3b76c N |
511 | ssize_t tlen = 0; |
512 | char *sep; | |
9dd9845f SK |
513 | struct net *net = &init_net; |
514 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); | |
70c3b76c N |
515 | |
516 | if (size>0) { | |
9dd9845f | 517 | if (nn->nfsd_serv) |
6658d3a7 | 518 | /* Cannot change versions without updating |
9dd9845f | 519 | * nn->nfsd_serv->sv_xdrsize, and reallocing |
6658d3a7 N |
520 | * rq_argp and rq_resp |
521 | */ | |
70c3b76c N |
522 | return -EBUSY; |
523 | if (buf[size-1] != '\n') | |
524 | return -EINVAL; | |
525 | buf[size-1] = 0; | |
526 | ||
527 | vers = mesg; | |
528 | len = qword_get(&mesg, vers, size); | |
529 | if (len <= 0) return -EINVAL; | |
530 | do { | |
531 | sign = *vers; | |
532 | if (sign == '+' || sign == '-') | |
8daf220a | 533 | num = simple_strtol((vers+1), &minorp, 0); |
70c3b76c | 534 | else |
8daf220a BH |
535 | num = simple_strtol(vers, &minorp, 0); |
536 | if (*minorp == '.') { | |
537 | if (num < 4) | |
538 | return -EINVAL; | |
539 | minor = simple_strtoul(minorp+1, NULL, 0); | |
540 | if (minor == 0) | |
541 | return -EINVAL; | |
542 | if (nfsd_minorversion(minor, sign == '-' ? | |
543 | NFSD_CLEAR : NFSD_SET) < 0) | |
544 | return -EINVAL; | |
545 | goto next; | |
546 | } | |
70c3b76c N |
547 | switch(num) { |
548 | case 2: | |
549 | case 3: | |
550 | case 4: | |
6658d3a7 | 551 | nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET); |
70c3b76c N |
552 | break; |
553 | default: | |
554 | return -EINVAL; | |
555 | } | |
8daf220a | 556 | next: |
70c3b76c | 557 | vers += len + 1; |
70c3b76c N |
558 | } while ((len = qword_get(&mesg, vers, size)) > 0); |
559 | /* If all get turned off, turn them back on, as | |
560 | * having no versions is BAD | |
561 | */ | |
6658d3a7 | 562 | nfsd_reset_versions(); |
70c3b76c | 563 | } |
261758b5 | 564 | |
70c3b76c N |
565 | /* Now write current state into reply buffer */ |
566 | len = 0; | |
567 | sep = ""; | |
261758b5 | 568 | remaining = SIMPLE_TRANSACTION_LIMIT; |
70c3b76c | 569 | for (num=2 ; num <= 4 ; num++) |
6658d3a7 | 570 | if (nfsd_vers(num, NFSD_AVAIL)) { |
261758b5 | 571 | len = snprintf(buf, remaining, "%s%c%d", sep, |
6658d3a7 | 572 | nfsd_vers(num, NFSD_TEST)?'+':'-', |
70c3b76c N |
573 | num); |
574 | sep = " "; | |
261758b5 CL |
575 | |
576 | if (len > remaining) | |
577 | break; | |
578 | remaining -= len; | |
579 | buf += len; | |
580 | tlen += len; | |
70c3b76c | 581 | } |
8daf220a | 582 | if (nfsd_vers(4, NFSD_AVAIL)) |
261758b5 CL |
583 | for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION; |
584 | minor++) { | |
585 | len = snprintf(buf, remaining, " %c4.%u", | |
8daf220a BH |
586 | (nfsd_vers(4, NFSD_TEST) && |
587 | nfsd_minorversion(minor, NFSD_TEST)) ? | |
588 | '+' : '-', | |
589 | minor); | |
261758b5 CL |
590 | |
591 | if (len > remaining) | |
592 | break; | |
593 | remaining -= len; | |
594 | buf += len; | |
595 | tlen += len; | |
596 | } | |
597 | ||
598 | len = snprintf(buf, remaining, "\n"); | |
599 | if (len > remaining) | |
600 | return -EINVAL; | |
601 | return tlen + len; | |
70c3b76c N |
602 | } |
603 | ||
262a0982 CL |
604 | /** |
605 | * write_versions - Set or report the available NFS protocol versions | |
606 | * | |
607 | * Input: | |
608 | * buf: ignored | |
609 | * size: zero | |
610 | * Output: | |
611 | * On success: passed-in buffer filled with '\n'-terminated C | |
612 | * string containing positive or negative integer | |
613 | * values representing the current status of each | |
614 | * protocol version; | |
615 | * return code is the size in bytes of the string | |
616 | * On error: return code is zero or a negative errno value | |
617 | * | |
618 | * OR | |
619 | * | |
620 | * Input: | |
621 | * buf: C string containing whitespace- | |
622 | * separated positive or negative | |
623 | * integer values representing NFS | |
624 | * protocol versions to enable ("+n") | |
625 | * or disable ("-n") | |
626 | * size: non-zero length of C string in @buf | |
627 | * Output: | |
628 | * On success: status of zero or more protocol versions has | |
629 | * been updated; passed-in buffer filled with | |
630 | * '\n'-terminated C string containing positive | |
631 | * or negative integer values representing the | |
632 | * current status of each protocol version; | |
633 | * return code is the size in bytes of the string | |
634 | * On error: return code is zero or a negative errno value | |
635 | */ | |
3dd98a3b JL |
636 | static ssize_t write_versions(struct file *file, char *buf, size_t size) |
637 | { | |
638 | ssize_t rv; | |
639 | ||
640 | mutex_lock(&nfsd_mutex); | |
641 | rv = __write_versions(file, buf, size); | |
642 | mutex_unlock(&nfsd_mutex); | |
643 | return rv; | |
644 | } | |
645 | ||
0a5372d8 CL |
646 | /* |
647 | * Zero-length write. Return a list of NFSD's current listener | |
648 | * transports. | |
649 | */ | |
9dd9845f | 650 | static ssize_t __write_ports_names(char *buf, struct net *net) |
0a5372d8 | 651 | { |
9dd9845f SK |
652 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
653 | ||
654 | if (nn->nfsd_serv == NULL) | |
0a5372d8 | 655 | return 0; |
9dd9845f | 656 | return svc_xprt_names(nn->nfsd_serv, buf, SIMPLE_TRANSACTION_LIMIT); |
0a5372d8 CL |
657 | } |
658 | ||
0b7c2f6f CL |
659 | /* |
660 | * A single 'fd' number was written, in which case it must be for | |
661 | * a socket of a supported family/protocol, and we use it as an | |
662 | * nfsd listener. | |
663 | */ | |
08160352 | 664 | static ssize_t __write_ports_addfd(char *buf, struct net *net) |
0b7c2f6f CL |
665 | { |
666 | char *mesg = buf; | |
667 | int fd, err; | |
9dd9845f | 668 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
0b7c2f6f CL |
669 | |
670 | err = get_int(&mesg, &fd); | |
671 | if (err != 0 || fd < 0) | |
672 | return -EINVAL; | |
673 | ||
6777436b | 674 | err = nfsd_create_serv(net); |
0b7c2f6f CL |
675 | if (err != 0) |
676 | return err; | |
677 | ||
9dd9845f | 678 | err = svc_addsock(nn->nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT); |
78a8d7c8 | 679 | if (err < 0) { |
19f7e2ca | 680 | nfsd_destroy(net); |
78a8d7c8 JL |
681 | return err; |
682 | } | |
0b7c2f6f | 683 | |
ea068bad | 684 | /* Decrease the count, but don't shut down the service */ |
9dd9845f | 685 | nn->nfsd_serv->sv_nrthreads--; |
ea068bad | 686 | return err; |
0b7c2f6f CL |
687 | } |
688 | ||
4eb68c26 CL |
689 | /* |
690 | * A transport listener is added by writing it's transport name and | |
691 | * a port number. | |
692 | */ | |
08160352 | 693 | static ssize_t __write_ports_addxprt(char *buf, struct net *net) |
4eb68c26 CL |
694 | { |
695 | char transport[16]; | |
37498292 | 696 | struct svc_xprt *xprt; |
4eb68c26 | 697 | int port, err; |
9dd9845f | 698 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
4eb68c26 | 699 | |
a10fded1 | 700 | if (sscanf(buf, "%15s %5u", transport, &port) != 2) |
4eb68c26 CL |
701 | return -EINVAL; |
702 | ||
4be929be | 703 | if (port < 1 || port > USHRT_MAX) |
4eb68c26 CL |
704 | return -EINVAL; |
705 | ||
6777436b | 706 | err = nfsd_create_serv(net); |
4eb68c26 CL |
707 | if (err != 0) |
708 | return err; | |
709 | ||
9dd9845f | 710 | err = svc_create_xprt(nn->nfsd_serv, transport, net, |
4eb68c26 | 711 | PF_INET, port, SVC_SOCK_ANONYMOUS); |
68717908 | 712 | if (err < 0) |
37498292 CL |
713 | goto out_err; |
714 | ||
9dd9845f | 715 | err = svc_create_xprt(nn->nfsd_serv, transport, net, |
37498292 CL |
716 | PF_INET6, port, SVC_SOCK_ANONYMOUS); |
717 | if (err < 0 && err != -EAFNOSUPPORT) | |
718 | goto out_close; | |
0cd14a06 JL |
719 | |
720 | /* Decrease the count, but don't shut down the service */ | |
9dd9845f | 721 | nn->nfsd_serv->sv_nrthreads--; |
4eb68c26 | 722 | return 0; |
37498292 | 723 | out_close: |
9dd9845f | 724 | xprt = svc_find_xprt(nn->nfsd_serv, transport, net, PF_INET, port); |
37498292 CL |
725 | if (xprt != NULL) { |
726 | svc_close_xprt(xprt); | |
727 | svc_xprt_put(xprt); | |
728 | } | |
729 | out_err: | |
19f7e2ca | 730 | nfsd_destroy(net); |
37498292 | 731 | return err; |
4eb68c26 CL |
732 | } |
733 | ||
08160352 SK |
734 | static ssize_t __write_ports(struct file *file, char *buf, size_t size, |
735 | struct net *net) | |
80212d59 | 736 | { |
0a5372d8 | 737 | if (size == 0) |
9dd9845f | 738 | return __write_ports_names(buf, net); |
0b7c2f6f CL |
739 | |
740 | if (isdigit(buf[0])) | |
08160352 | 741 | return __write_ports_addfd(buf, net); |
82d56591 | 742 | |
4eb68c26 | 743 | if (isalpha(buf[0])) |
08160352 | 744 | return __write_ports_addxprt(buf, net); |
4cd5dc75 | 745 | |
b41b66d6 | 746 | return -EINVAL; |
80212d59 N |
747 | } |
748 | ||
262a0982 CL |
749 | /** |
750 | * write_ports - Pass a socket file descriptor or transport name to listen on | |
751 | * | |
752 | * Input: | |
753 | * buf: ignored | |
754 | * size: zero | |
755 | * Output: | |
756 | * On success: passed-in buffer filled with a '\n'-terminated C | |
757 | * string containing a whitespace-separated list of | |
758 | * named NFSD listeners; | |
759 | * return code is the size in bytes of the string | |
760 | * On error: return code is zero or a negative errno value | |
761 | * | |
762 | * OR | |
763 | * | |
764 | * Input: | |
765 | * buf: C string containing an unsigned | |
766 | * integer value representing a bound | |
767 | * but unconnected socket that is to be | |
c71206a7 CL |
768 | * used as an NFSD listener; listen(3) |
769 | * must be called for a SOCK_STREAM | |
770 | * socket, otherwise it is ignored | |
262a0982 CL |
771 | * size: non-zero length of C string in @buf |
772 | * Output: | |
773 | * On success: NFS service is started; | |
774 | * passed-in buffer filled with a '\n'-terminated C | |
775 | * string containing a unique alphanumeric name of | |
776 | * the listener; | |
777 | * return code is the size in bytes of the string | |
778 | * On error: return code is a negative errno value | |
779 | * | |
780 | * OR | |
781 | * | |
782 | * Input: | |
262a0982 CL |
783 | * buf: C string containing a transport |
784 | * name and an unsigned integer value | |
785 | * representing the port to listen on, | |
786 | * separated by whitespace | |
787 | * size: non-zero length of C string in @buf | |
788 | * Output: | |
789 | * On success: returns zero; NFS service is started | |
790 | * On error: return code is a negative errno value | |
262a0982 | 791 | */ |
bedbdd8b NB |
792 | static ssize_t write_ports(struct file *file, char *buf, size_t size) |
793 | { | |
794 | ssize_t rv; | |
08160352 | 795 | struct net *net = &init_net; |
3dd98a3b | 796 | |
bedbdd8b | 797 | mutex_lock(&nfsd_mutex); |
08160352 | 798 | rv = __write_ports(file, buf, size, net); |
bedbdd8b NB |
799 | mutex_unlock(&nfsd_mutex); |
800 | return rv; | |
801 | } | |
802 | ||
803 | ||
596bbe53 N |
804 | int nfsd_max_blksize; |
805 | ||
262a0982 CL |
806 | /** |
807 | * write_maxblksize - Set or report the current NFS blksize | |
808 | * | |
809 | * Input: | |
810 | * buf: ignored | |
811 | * size: zero | |
812 | * | |
813 | * OR | |
814 | * | |
815 | * Input: | |
816 | * buf: C string containing an unsigned | |
817 | * integer value representing the new | |
818 | * NFS blksize | |
819 | * size: non-zero length of C string in @buf | |
820 | * Output: | |
821 | * On success: passed-in buffer filled with '\n'-terminated C string | |
822 | * containing numeric value of the current NFS blksize | |
823 | * setting; | |
824 | * return code is the size in bytes of the string | |
825 | * On error: return code is zero or a negative errno value | |
826 | */ | |
596bbe53 N |
827 | static ssize_t write_maxblksize(struct file *file, char *buf, size_t size) |
828 | { | |
829 | char *mesg = buf; | |
9dd9845f SK |
830 | struct net *net = &init_net; |
831 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); | |
832 | ||
596bbe53 N |
833 | if (size > 0) { |
834 | int bsize; | |
835 | int rv = get_int(&mesg, &bsize); | |
836 | if (rv) | |
837 | return rv; | |
838 | /* force bsize into allowed range and | |
839 | * required alignment. | |
840 | */ | |
841 | if (bsize < 1024) | |
842 | bsize = 1024; | |
843 | if (bsize > NFSSVC_MAXBLKSIZE) | |
844 | bsize = NFSSVC_MAXBLKSIZE; | |
845 | bsize &= ~(1024-1); | |
bedbdd8b | 846 | mutex_lock(&nfsd_mutex); |
9dd9845f | 847 | if (nn->nfsd_serv) { |
bedbdd8b | 848 | mutex_unlock(&nfsd_mutex); |
596bbe53 N |
849 | return -EBUSY; |
850 | } | |
851 | nfsd_max_blksize = bsize; | |
bedbdd8b | 852 | mutex_unlock(&nfsd_mutex); |
596bbe53 | 853 | } |
e06b6405 CL |
854 | |
855 | return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", | |
856 | nfsd_max_blksize); | |
596bbe53 N |
857 | } |
858 | ||
70c3b76c | 859 | #ifdef CONFIG_NFSD_V4 |
9dd9845f SK |
860 | static ssize_t __nfsd4_write_time(struct file *file, char *buf, size_t size, |
861 | time_t *time, struct nfsd_net *nn) | |
1da177e4 | 862 | { |
1da177e4 | 863 | char *mesg = buf; |
f0135740 | 864 | int rv, i; |
1da177e4 LT |
865 | |
866 | if (size > 0) { | |
9dd9845f | 867 | if (nn->nfsd_serv) |
3dd98a3b | 868 | return -EBUSY; |
f0135740 | 869 | rv = get_int(&mesg, &i); |
1da177e4 LT |
870 | if (rv) |
871 | return rv; | |
e7b184f1 BF |
872 | /* |
873 | * Some sanity checking. We don't have a reason for | |
874 | * these particular numbers, but problems with the | |
875 | * extremes are: | |
876 | * - Too short: the briefest network outage may | |
877 | * cause clients to lose all their locks. Also, | |
878 | * the frequent polling may be wasteful. | |
879 | * - Too long: do you really want reboot recovery | |
880 | * to take more than an hour? Or to make other | |
881 | * clients wait an hour before being able to | |
882 | * revoke a dead client's locks? | |
883 | */ | |
f0135740 | 884 | if (i < 10 || i > 3600) |
1da177e4 | 885 | return -EINVAL; |
f0135740 | 886 | *time = i; |
1da177e4 | 887 | } |
e06b6405 | 888 | |
f0135740 BF |
889 | return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%ld\n", *time); |
890 | } | |
891 | ||
9dd9845f SK |
892 | static ssize_t nfsd4_write_time(struct file *file, char *buf, size_t size, |
893 | time_t *time, struct nfsd_net *nn) | |
f0135740 BF |
894 | { |
895 | ssize_t rv; | |
896 | ||
897 | mutex_lock(&nfsd_mutex); | |
9dd9845f | 898 | rv = __nfsd4_write_time(file, buf, size, time, nn); |
f0135740 BF |
899 | mutex_unlock(&nfsd_mutex); |
900 | return rv; | |
1da177e4 LT |
901 | } |
902 | ||
262a0982 CL |
903 | /** |
904 | * write_leasetime - Set or report the current NFSv4 lease time | |
905 | * | |
906 | * Input: | |
907 | * buf: ignored | |
908 | * size: zero | |
909 | * | |
910 | * OR | |
911 | * | |
912 | * Input: | |
913 | * buf: C string containing an unsigned | |
914 | * integer value representing the new | |
915 | * NFSv4 lease expiry time | |
916 | * size: non-zero length of C string in @buf | |
917 | * Output: | |
918 | * On success: passed-in buffer filled with '\n'-terminated C | |
919 | * string containing unsigned integer value of the | |
920 | * current lease expiry time; | |
921 | * return code is the size in bytes of the string | |
922 | * On error: return code is zero or a negative errno value | |
923 | */ | |
3dd98a3b JL |
924 | static ssize_t write_leasetime(struct file *file, char *buf, size_t size) |
925 | { | |
3d733711 | 926 | struct nfsd_net *nn = net_generic(&init_net, nfsd_net_id); |
9dd9845f | 927 | return nfsd4_write_time(file, buf, size, &nn->nfsd4_lease, nn); |
3dd98a3b JL |
928 | } |
929 | ||
efc4bb4f BF |
930 | /** |
931 | * write_gracetime - Set or report current NFSv4 grace period time | |
932 | * | |
933 | * As above, but sets the time of the NFSv4 grace period. | |
934 | * | |
935 | * Note this should never be set to less than the *previous* | |
936 | * lease-period time, but we don't try to enforce this. (In the common | |
937 | * case (a new boot), we don't know what the previous lease time was | |
938 | * anyway.) | |
939 | */ | |
940 | static ssize_t write_gracetime(struct file *file, char *buf, size_t size) | |
941 | { | |
5284b44e | 942 | struct nfsd_net *nn = net_generic(&init_net, nfsd_net_id); |
9dd9845f | 943 | return nfsd4_write_time(file, buf, size, &nn->nfsd4_grace, nn); |
efc4bb4f BF |
944 | } |
945 | ||
9dd9845f SK |
946 | static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size, |
947 | struct nfsd_net *nn) | |
0964a3d3 N |
948 | { |
949 | char *mesg = buf; | |
950 | char *recdir; | |
951 | int len, status; | |
952 | ||
3dd98a3b | 953 | if (size > 0) { |
9dd9845f | 954 | if (nn->nfsd_serv) |
3dd98a3b JL |
955 | return -EBUSY; |
956 | if (size > PATH_MAX || buf[size-1] != '\n') | |
957 | return -EINVAL; | |
958 | buf[size-1] = 0; | |
0964a3d3 | 959 | |
3dd98a3b JL |
960 | recdir = mesg; |
961 | len = qword_get(&mesg, recdir, size); | |
962 | if (len <= 0) | |
963 | return -EINVAL; | |
0964a3d3 | 964 | |
3dd98a3b | 965 | status = nfs4_reset_recoverydir(recdir); |
69049961 AK |
966 | if (status) |
967 | return status; | |
3dd98a3b | 968 | } |
3d72ab8f CL |
969 | |
970 | return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s\n", | |
971 | nfs4_recoverydir()); | |
0964a3d3 | 972 | } |
3dd98a3b | 973 | |
262a0982 CL |
974 | /** |
975 | * write_recoverydir - Set or report the pathname of the recovery directory | |
976 | * | |
977 | * Input: | |
978 | * buf: ignored | |
979 | * size: zero | |
980 | * | |
981 | * OR | |
982 | * | |
983 | * Input: | |
984 | * buf: C string containing the pathname | |
985 | * of the directory on a local file | |
986 | * system containing permanent NFSv4 | |
987 | * recovery data | |
988 | * size: non-zero length of C string in @buf | |
989 | * Output: | |
990 | * On success: passed-in buffer filled with '\n'-terminated C string | |
991 | * containing the current recovery pathname setting; | |
992 | * return code is the size in bytes of the string | |
993 | * On error: return code is zero or a negative errno value | |
994 | */ | |
3dd98a3b JL |
995 | static ssize_t write_recoverydir(struct file *file, char *buf, size_t size) |
996 | { | |
997 | ssize_t rv; | |
9dd9845f | 998 | struct nfsd_net *nn = net_generic(&init_net, nfsd_net_id); |
3dd98a3b JL |
999 | |
1000 | mutex_lock(&nfsd_mutex); | |
9dd9845f | 1001 | rv = __write_recoverydir(file, buf, size, nn); |
3dd98a3b JL |
1002 | mutex_unlock(&nfsd_mutex); |
1003 | return rv; | |
1004 | } | |
1005 | ||
70c3b76c | 1006 | #endif |
0964a3d3 | 1007 | |
1da177e4 LT |
1008 | /*----------------------------------------------------------------------------*/ |
1009 | /* | |
1010 | * populating the filesystem. | |
1011 | */ | |
1012 | ||
1013 | static int nfsd_fill_super(struct super_block * sb, void * data, int silent) | |
1014 | { | |
1015 | static struct tree_descr nfsd_files[] = { | |
1da177e4 | 1016 | [NFSD_List] = {"exports", &exports_operations, S_IRUGO}, |
e8e8753f BF |
1017 | [NFSD_Export_features] = {"export_features", |
1018 | &export_features_operations, S_IRUGO}, | |
4373ea84 WC |
1019 | [NFSD_FO_UnlockIP] = {"unlock_ip", |
1020 | &transaction_ops, S_IWUSR|S_IRUSR}, | |
17efa372 WC |
1021 | [NFSD_FO_UnlockFS] = {"unlock_filesystem", |
1022 | &transaction_ops, S_IWUSR|S_IRUSR}, | |
1da177e4 LT |
1023 | [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR}, |
1024 | [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR}, | |
eed2965a | 1025 | [NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR}, |
03cf6c9f | 1026 | [NFSD_Pool_Stats] = {"pool_stats", &pool_stats_operations, S_IRUGO}, |
70c3b76c | 1027 | [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR}, |
80212d59 | 1028 | [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO}, |
596bbe53 | 1029 | [NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO}, |
b084f598 | 1030 | #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE) |
b0b0c0a2 | 1031 | [NFSD_SupportedEnctypes] = {"supported_krb5_enctypes", &supported_enctypes_ops, S_IRUGO}, |
b084f598 | 1032 | #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */ |
1da177e4 LT |
1033 | #ifdef CONFIG_NFSD_V4 |
1034 | [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR}, | |
efc4bb4f | 1035 | [NFSD_Gracetime] = {"nfsv4gracetime", &transaction_ops, S_IWUSR|S_IRUSR}, |
0964a3d3 | 1036 | [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR}, |
1da177e4 LT |
1037 | #endif |
1038 | /* last one */ {""} | |
1039 | }; | |
1040 | return simple_fill_super(sb, 0x6e667364, nfsd_files); | |
1041 | } | |
1042 | ||
fc14f2fe AV |
1043 | static struct dentry *nfsd_mount(struct file_system_type *fs_type, |
1044 | int flags, const char *dev_name, void *data) | |
1da177e4 | 1045 | { |
fc14f2fe | 1046 | return mount_single(fs_type, flags, data, nfsd_fill_super); |
1da177e4 LT |
1047 | } |
1048 | ||
1049 | static struct file_system_type nfsd_fs_type = { | |
1050 | .owner = THIS_MODULE, | |
1051 | .name = "nfsd", | |
fc14f2fe | 1052 | .mount = nfsd_mount, |
1da177e4 LT |
1053 | .kill_sb = kill_litter_super, |
1054 | }; | |
1055 | ||
e331f606 BF |
1056 | #ifdef CONFIG_PROC_FS |
1057 | static int create_proc_exports_entry(void) | |
1058 | { | |
1059 | struct proc_dir_entry *entry; | |
1060 | ||
1061 | entry = proc_mkdir("fs/nfs", NULL); | |
1062 | if (!entry) | |
1063 | return -ENOMEM; | |
9ef2db26 | 1064 | entry = proc_create("exports", 0, entry, &exports_operations); |
e331f606 BF |
1065 | if (!entry) |
1066 | return -ENOMEM; | |
e331f606 BF |
1067 | return 0; |
1068 | } | |
1069 | #else /* CONFIG_PROC_FS */ | |
1070 | static int create_proc_exports_entry(void) | |
1071 | { | |
1072 | return 0; | |
1073 | } | |
1074 | #endif | |
1075 | ||
7ea34ac1 | 1076 | int nfsd_net_id; |
5717e012 SK |
1077 | |
1078 | static __net_init int nfsd_init_net(struct net *net) | |
1079 | { | |
1080 | int retval; | |
3d733711 | 1081 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
5717e012 SK |
1082 | |
1083 | retval = nfsd_export_init(net); | |
1084 | if (retval) | |
1085 | goto out_export_error; | |
f69adb2f SK |
1086 | retval = nfsd_idmap_init(net); |
1087 | if (retval) | |
1088 | goto out_idmap_error; | |
3d733711 | 1089 | nn->nfsd4_lease = 90; /* default lease time */ |
5284b44e | 1090 | nn->nfsd4_grace = 90; |
5717e012 SK |
1091 | return 0; |
1092 | ||
f69adb2f SK |
1093 | out_idmap_error: |
1094 | nfsd_export_shutdown(net); | |
5717e012 SK |
1095 | out_export_error: |
1096 | return retval; | |
1097 | } | |
1098 | ||
1099 | static __net_exit void nfsd_exit_net(struct net *net) | |
1100 | { | |
f69adb2f | 1101 | nfsd_idmap_shutdown(net); |
5717e012 SK |
1102 | nfsd_export_shutdown(net); |
1103 | } | |
1104 | ||
7ea34ac1 | 1105 | static struct pernet_operations nfsd_net_ops = { |
5717e012 SK |
1106 | .init = nfsd_init_net, |
1107 | .exit = nfsd_exit_net, | |
7ea34ac1 JL |
1108 | .id = &nfsd_net_id, |
1109 | .size = sizeof(struct nfsd_net), | |
1110 | }; | |
1111 | ||
1da177e4 LT |
1112 | static int __init init_nfsd(void) |
1113 | { | |
1114 | int retval; | |
1115 | printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n"); | |
1116 | ||
797a9d79 | 1117 | retval = register_cld_notifier(); |
813fd320 JL |
1118 | if (retval) |
1119 | return retval; | |
7ea34ac1 JL |
1120 | retval = register_pernet_subsys(&nfsd_net_ops); |
1121 | if (retval < 0) | |
813fd320 | 1122 | goto out_unregister_notifier; |
72083396 | 1123 | retval = nfsd4_init_slabs(); |
e8ff2a84 | 1124 | if (retval) |
7ea34ac1 | 1125 | goto out_unregister_pernet; |
72083396 | 1126 | nfs4_state_init(); |
65178db4 BS |
1127 | retval = nfsd_fault_inject_init(); /* nfsd fault injection controls */ |
1128 | if (retval) | |
1129 | goto out_free_slabs; | |
1da177e4 | 1130 | nfsd_stat_init(); /* Statistics */ |
d5c3428b BF |
1131 | retval = nfsd_reply_cache_init(); |
1132 | if (retval) | |
1133 | goto out_free_stat; | |
1da177e4 | 1134 | nfsd_lockd_init(); /* lockd->nfsd callbacks */ |
e331f606 BF |
1135 | retval = create_proc_exports_entry(); |
1136 | if (retval) | |
f69adb2f | 1137 | goto out_free_lockd; |
1da177e4 | 1138 | retval = register_filesystem(&nfsd_fs_type); |
26808d3f BF |
1139 | if (retval) |
1140 | goto out_free_all; | |
1141 | return 0; | |
1142 | out_free_all: | |
26808d3f BF |
1143 | remove_proc_entry("fs/nfs/exports", NULL); |
1144 | remove_proc_entry("fs/nfs", NULL); | |
dbf847ec | 1145 | out_free_lockd: |
26808d3f | 1146 | nfsd_lockd_shutdown(); |
e331f606 | 1147 | nfsd_reply_cache_shutdown(); |
d5c3428b BF |
1148 | out_free_stat: |
1149 | nfsd_stat_shutdown(); | |
65178db4 BS |
1150 | nfsd_fault_inject_cleanup(); |
1151 | out_free_slabs: | |
26808d3f | 1152 | nfsd4_free_slabs(); |
7ea34ac1 JL |
1153 | out_unregister_pernet: |
1154 | unregister_pernet_subsys(&nfsd_net_ops); | |
813fd320 | 1155 | out_unregister_notifier: |
797a9d79 | 1156 | unregister_cld_notifier(); |
1da177e4 LT |
1157 | return retval; |
1158 | } | |
1159 | ||
1160 | static void __exit exit_nfsd(void) | |
1161 | { | |
d5c3428b | 1162 | nfsd_reply_cache_shutdown(); |
1da177e4 LT |
1163 | remove_proc_entry("fs/nfs/exports", NULL); |
1164 | remove_proc_entry("fs/nfs", NULL); | |
1165 | nfsd_stat_shutdown(); | |
1166 | nfsd_lockd_shutdown(); | |
e8ff2a84 | 1167 | nfsd4_free_slabs(); |
65178db4 | 1168 | nfsd_fault_inject_cleanup(); |
1da177e4 | 1169 | unregister_filesystem(&nfsd_fs_type); |
7ea34ac1 | 1170 | unregister_pernet_subsys(&nfsd_net_ops); |
797a9d79 | 1171 | unregister_cld_notifier(); |
1da177e4 LT |
1172 | } |
1173 | ||
1174 | MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>"); | |
1175 | MODULE_LICENSE("GPL"); | |
1176 | module_init(init_nfsd) | |
1177 | module_exit(exit_nfsd) |