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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" | |
65178db4 | 22 | #include "fault_inject.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; | |
399 | if (size > 0) { | |
400 | int newthreads; | |
401 | rv = get_int(&mesg, &newthreads); | |
402 | if (rv) | |
403 | return rv; | |
9e074856 | 404 | if (newthreads < 0) |
1da177e4 | 405 | return -EINVAL; |
38af2cab | 406 | rv = nfsd_svc(newthreads); |
82e12fe9 | 407 | if (rv < 0) |
1da177e4 | 408 | return rv; |
82e12fe9 N |
409 | } else |
410 | rv = nfsd_nrthreads(); | |
e06b6405 | 411 | |
82e12fe9 | 412 | return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", rv); |
1da177e4 LT |
413 | } |
414 | ||
262a0982 CL |
415 | /** |
416 | * write_pool_threads - Set or report the current number of threads per pool | |
417 | * | |
418 | * Input: | |
419 | * buf: ignored | |
420 | * size: zero | |
421 | * | |
422 | * OR | |
423 | * | |
424 | * Input: | |
425 | * buf: C string containing whitespace- | |
426 | * separated unsigned integer values | |
427 | * representing the number of NFSD | |
428 | * threads to start in each pool | |
429 | * size: non-zero length of C string in @buf | |
430 | * Output: | |
431 | * On success: passed-in buffer filled with '\n'-terminated C | |
432 | * string containing integer values representing the | |
433 | * number of NFSD threads in each pool; | |
434 | * return code is the size in bytes of the string | |
435 | * On error: return code is zero or a negative errno value | |
436 | */ | |
eed2965a GB |
437 | static ssize_t write_pool_threads(struct file *file, char *buf, size_t size) |
438 | { | |
439 | /* if size > 0, look for an array of number of threads per node | |
440 | * and apply them then write out number of threads per node as reply | |
441 | */ | |
442 | char *mesg = buf; | |
443 | int i; | |
444 | int rv; | |
445 | int len; | |
bedbdd8b | 446 | int npools; |
eed2965a GB |
447 | int *nthreads; |
448 | ||
bedbdd8b NB |
449 | mutex_lock(&nfsd_mutex); |
450 | npools = nfsd_nrpools(); | |
eed2965a GB |
451 | if (npools == 0) { |
452 | /* | |
453 | * NFS is shut down. The admin can start it by | |
454 | * writing to the threads file but NOT the pool_threads | |
455 | * file, sorry. Report zero threads. | |
456 | */ | |
bedbdd8b | 457 | mutex_unlock(&nfsd_mutex); |
eed2965a GB |
458 | strcpy(buf, "0\n"); |
459 | return strlen(buf); | |
460 | } | |
461 | ||
462 | nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL); | |
bedbdd8b | 463 | rv = -ENOMEM; |
eed2965a | 464 | if (nthreads == NULL) |
bedbdd8b | 465 | goto out_free; |
eed2965a GB |
466 | |
467 | if (size > 0) { | |
468 | for (i = 0; i < npools; i++) { | |
469 | rv = get_int(&mesg, &nthreads[i]); | |
470 | if (rv == -ENOENT) | |
471 | break; /* fewer numbers than pools */ | |
472 | if (rv) | |
473 | goto out_free; /* syntax error */ | |
474 | rv = -EINVAL; | |
475 | if (nthreads[i] < 0) | |
476 | goto out_free; | |
477 | } | |
478 | rv = nfsd_set_nrthreads(i, nthreads); | |
479 | if (rv) | |
480 | goto out_free; | |
481 | } | |
482 | ||
483 | rv = nfsd_get_nrthreads(npools, nthreads); | |
484 | if (rv) | |
485 | goto out_free; | |
486 | ||
487 | mesg = buf; | |
488 | size = SIMPLE_TRANSACTION_LIMIT; | |
489 | for (i = 0; i < npools && size > 0; i++) { | |
490 | snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? '\n' : ' ')); | |
491 | len = strlen(mesg); | |
492 | size -= len; | |
493 | mesg += len; | |
494 | } | |
413d63d7 | 495 | rv = mesg - buf; |
eed2965a GB |
496 | out_free: |
497 | kfree(nthreads); | |
bedbdd8b | 498 | mutex_unlock(&nfsd_mutex); |
eed2965a GB |
499 | return rv; |
500 | } | |
501 | ||
3dd98a3b | 502 | static ssize_t __write_versions(struct file *file, char *buf, size_t size) |
70c3b76c | 503 | { |
70c3b76c | 504 | char *mesg = buf; |
8daf220a | 505 | char *vers, *minorp, sign; |
261758b5 | 506 | int len, num, remaining; |
8daf220a | 507 | unsigned minor; |
70c3b76c N |
508 | ssize_t tlen = 0; |
509 | char *sep; | |
510 | ||
511 | if (size>0) { | |
512 | if (nfsd_serv) | |
6658d3a7 N |
513 | /* Cannot change versions without updating |
514 | * nfsd_serv->sv_xdrsize, and reallocing | |
515 | * rq_argp and rq_resp | |
516 | */ | |
70c3b76c N |
517 | return -EBUSY; |
518 | if (buf[size-1] != '\n') | |
519 | return -EINVAL; | |
520 | buf[size-1] = 0; | |
521 | ||
522 | vers = mesg; | |
523 | len = qword_get(&mesg, vers, size); | |
524 | if (len <= 0) return -EINVAL; | |
525 | do { | |
526 | sign = *vers; | |
527 | if (sign == '+' || sign == '-') | |
8daf220a | 528 | num = simple_strtol((vers+1), &minorp, 0); |
70c3b76c | 529 | else |
8daf220a BH |
530 | num = simple_strtol(vers, &minorp, 0); |
531 | if (*minorp == '.') { | |
532 | if (num < 4) | |
533 | return -EINVAL; | |
534 | minor = simple_strtoul(minorp+1, NULL, 0); | |
535 | if (minor == 0) | |
536 | return -EINVAL; | |
537 | if (nfsd_minorversion(minor, sign == '-' ? | |
538 | NFSD_CLEAR : NFSD_SET) < 0) | |
539 | return -EINVAL; | |
540 | goto next; | |
541 | } | |
70c3b76c N |
542 | switch(num) { |
543 | case 2: | |
544 | case 3: | |
545 | case 4: | |
6658d3a7 | 546 | nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET); |
70c3b76c N |
547 | break; |
548 | default: | |
549 | return -EINVAL; | |
550 | } | |
8daf220a | 551 | next: |
70c3b76c | 552 | vers += len + 1; |
70c3b76c N |
553 | } while ((len = qword_get(&mesg, vers, size)) > 0); |
554 | /* If all get turned off, turn them back on, as | |
555 | * having no versions is BAD | |
556 | */ | |
6658d3a7 | 557 | nfsd_reset_versions(); |
70c3b76c | 558 | } |
261758b5 | 559 | |
70c3b76c N |
560 | /* Now write current state into reply buffer */ |
561 | len = 0; | |
562 | sep = ""; | |
261758b5 | 563 | remaining = SIMPLE_TRANSACTION_LIMIT; |
70c3b76c | 564 | for (num=2 ; num <= 4 ; num++) |
6658d3a7 | 565 | if (nfsd_vers(num, NFSD_AVAIL)) { |
261758b5 | 566 | len = snprintf(buf, remaining, "%s%c%d", sep, |
6658d3a7 | 567 | nfsd_vers(num, NFSD_TEST)?'+':'-', |
70c3b76c N |
568 | num); |
569 | sep = " "; | |
261758b5 CL |
570 | |
571 | if (len > remaining) | |
572 | break; | |
573 | remaining -= len; | |
574 | buf += len; | |
575 | tlen += len; | |
70c3b76c | 576 | } |
8daf220a | 577 | if (nfsd_vers(4, NFSD_AVAIL)) |
261758b5 CL |
578 | for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION; |
579 | minor++) { | |
580 | len = snprintf(buf, remaining, " %c4.%u", | |
8daf220a BH |
581 | (nfsd_vers(4, NFSD_TEST) && |
582 | nfsd_minorversion(minor, NFSD_TEST)) ? | |
583 | '+' : '-', | |
584 | minor); | |
261758b5 CL |
585 | |
586 | if (len > remaining) | |
587 | break; | |
588 | remaining -= len; | |
589 | buf += len; | |
590 | tlen += len; | |
591 | } | |
592 | ||
593 | len = snprintf(buf, remaining, "\n"); | |
594 | if (len > remaining) | |
595 | return -EINVAL; | |
596 | return tlen + len; | |
70c3b76c N |
597 | } |
598 | ||
262a0982 CL |
599 | /** |
600 | * write_versions - Set or report the available NFS protocol versions | |
601 | * | |
602 | * Input: | |
603 | * buf: ignored | |
604 | * size: zero | |
605 | * Output: | |
606 | * On success: passed-in buffer filled with '\n'-terminated C | |
607 | * string containing positive or negative integer | |
608 | * values representing the current status of each | |
609 | * protocol version; | |
610 | * return code is the size in bytes of the string | |
611 | * On error: return code is zero or a negative errno value | |
612 | * | |
613 | * OR | |
614 | * | |
615 | * Input: | |
616 | * buf: C string containing whitespace- | |
617 | * separated positive or negative | |
618 | * integer values representing NFS | |
619 | * protocol versions to enable ("+n") | |
620 | * or disable ("-n") | |
621 | * size: non-zero length of C string in @buf | |
622 | * Output: | |
623 | * On success: status of zero or more protocol versions has | |
624 | * been updated; passed-in buffer filled with | |
625 | * '\n'-terminated C string containing positive | |
626 | * or negative integer values representing the | |
627 | * current status of each protocol version; | |
628 | * return code is the size in bytes of the string | |
629 | * On error: return code is zero or a negative errno value | |
630 | */ | |
3dd98a3b JL |
631 | static ssize_t write_versions(struct file *file, char *buf, size_t size) |
632 | { | |
633 | ssize_t rv; | |
634 | ||
635 | mutex_lock(&nfsd_mutex); | |
636 | rv = __write_versions(file, buf, size); | |
637 | mutex_unlock(&nfsd_mutex); | |
638 | return rv; | |
639 | } | |
640 | ||
0a5372d8 CL |
641 | /* |
642 | * Zero-length write. Return a list of NFSD's current listener | |
643 | * transports. | |
644 | */ | |
645 | static ssize_t __write_ports_names(char *buf) | |
646 | { | |
647 | if (nfsd_serv == NULL) | |
648 | return 0; | |
335c54bd | 649 | return svc_xprt_names(nfsd_serv, buf, SIMPLE_TRANSACTION_LIMIT); |
0a5372d8 CL |
650 | } |
651 | ||
0b7c2f6f CL |
652 | /* |
653 | * A single 'fd' number was written, in which case it must be for | |
654 | * a socket of a supported family/protocol, and we use it as an | |
655 | * nfsd listener. | |
656 | */ | |
657 | static ssize_t __write_ports_addfd(char *buf) | |
658 | { | |
659 | char *mesg = buf; | |
660 | int fd, err; | |
786185b5 | 661 | struct net *net = &init_net; |
0b7c2f6f CL |
662 | |
663 | err = get_int(&mesg, &fd); | |
664 | if (err != 0 || fd < 0) | |
665 | return -EINVAL; | |
666 | ||
667 | err = nfsd_create_serv(); | |
668 | if (err != 0) | |
669 | return err; | |
670 | ||
bfba9ab4 | 671 | err = svc_addsock(nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT); |
78a8d7c8 | 672 | if (err < 0) { |
19f7e2ca | 673 | nfsd_destroy(net); |
78a8d7c8 JL |
674 | return err; |
675 | } | |
0b7c2f6f | 676 | |
ea068bad CL |
677 | /* Decrease the count, but don't shut down the service */ |
678 | nfsd_serv->sv_nrthreads--; | |
679 | return err; | |
0b7c2f6f CL |
680 | } |
681 | ||
4eb68c26 CL |
682 | /* |
683 | * A transport listener is added by writing it's transport name and | |
684 | * a port number. | |
685 | */ | |
686 | static ssize_t __write_ports_addxprt(char *buf) | |
687 | { | |
688 | char transport[16]; | |
37498292 | 689 | struct svc_xprt *xprt; |
4eb68c26 | 690 | int port, err; |
786185b5 | 691 | struct net *net = &init_net; |
4eb68c26 | 692 | |
a10fded1 | 693 | if (sscanf(buf, "%15s %5u", transport, &port) != 2) |
4eb68c26 CL |
694 | return -EINVAL; |
695 | ||
4be929be | 696 | if (port < 1 || port > USHRT_MAX) |
4eb68c26 CL |
697 | return -EINVAL; |
698 | ||
699 | err = nfsd_create_serv(); | |
700 | if (err != 0) | |
701 | return err; | |
702 | ||
786185b5 | 703 | err = svc_create_xprt(nfsd_serv, transport, net, |
4eb68c26 | 704 | PF_INET, port, SVC_SOCK_ANONYMOUS); |
68717908 | 705 | if (err < 0) |
37498292 CL |
706 | goto out_err; |
707 | ||
786185b5 | 708 | err = svc_create_xprt(nfsd_serv, transport, net, |
37498292 CL |
709 | PF_INET6, port, SVC_SOCK_ANONYMOUS); |
710 | if (err < 0 && err != -EAFNOSUPPORT) | |
711 | goto out_close; | |
0cd14a06 JL |
712 | |
713 | /* Decrease the count, but don't shut down the service */ | |
714 | nfsd_serv->sv_nrthreads--; | |
4eb68c26 | 715 | return 0; |
37498292 | 716 | out_close: |
786185b5 | 717 | xprt = svc_find_xprt(nfsd_serv, transport, net, PF_INET, port); |
37498292 CL |
718 | if (xprt != NULL) { |
719 | svc_close_xprt(xprt); | |
720 | svc_xprt_put(xprt); | |
721 | } | |
722 | out_err: | |
19f7e2ca | 723 | nfsd_destroy(net); |
37498292 | 724 | return err; |
4eb68c26 CL |
725 | } |
726 | ||
bedbdd8b | 727 | static ssize_t __write_ports(struct file *file, char *buf, size_t size) |
80212d59 | 728 | { |
0a5372d8 CL |
729 | if (size == 0) |
730 | return __write_ports_names(buf); | |
0b7c2f6f CL |
731 | |
732 | if (isdigit(buf[0])) | |
733 | return __write_ports_addfd(buf); | |
82d56591 | 734 | |
4eb68c26 CL |
735 | if (isalpha(buf[0])) |
736 | return __write_ports_addxprt(buf); | |
4cd5dc75 | 737 | |
b41b66d6 | 738 | return -EINVAL; |
80212d59 N |
739 | } |
740 | ||
262a0982 CL |
741 | /** |
742 | * write_ports - Pass a socket file descriptor or transport name to listen on | |
743 | * | |
744 | * Input: | |
745 | * buf: ignored | |
746 | * size: zero | |
747 | * Output: | |
748 | * On success: passed-in buffer filled with a '\n'-terminated C | |
749 | * string containing a whitespace-separated list of | |
750 | * named NFSD listeners; | |
751 | * return code is the size in bytes of the string | |
752 | * On error: return code is zero or a negative errno value | |
753 | * | |
754 | * OR | |
755 | * | |
756 | * Input: | |
757 | * buf: C string containing an unsigned | |
758 | * integer value representing a bound | |
759 | * but unconnected socket that is to be | |
c71206a7 CL |
760 | * used as an NFSD listener; listen(3) |
761 | * must be called for a SOCK_STREAM | |
762 | * socket, otherwise it is ignored | |
262a0982 CL |
763 | * size: non-zero length of C string in @buf |
764 | * Output: | |
765 | * On success: NFS service is started; | |
766 | * passed-in buffer filled with a '\n'-terminated C | |
767 | * string containing a unique alphanumeric name of | |
768 | * the listener; | |
769 | * return code is the size in bytes of the string | |
770 | * On error: return code is a negative errno value | |
771 | * | |
772 | * OR | |
773 | * | |
774 | * Input: | |
262a0982 CL |
775 | * buf: C string containing a transport |
776 | * name and an unsigned integer value | |
777 | * representing the port to listen on, | |
778 | * separated by whitespace | |
779 | * size: non-zero length of C string in @buf | |
780 | * Output: | |
781 | * On success: returns zero; NFS service is started | |
782 | * On error: return code is a negative errno value | |
262a0982 | 783 | */ |
bedbdd8b NB |
784 | static ssize_t write_ports(struct file *file, char *buf, size_t size) |
785 | { | |
786 | ssize_t rv; | |
3dd98a3b | 787 | |
bedbdd8b NB |
788 | mutex_lock(&nfsd_mutex); |
789 | rv = __write_ports(file, buf, size); | |
790 | mutex_unlock(&nfsd_mutex); | |
791 | return rv; | |
792 | } | |
793 | ||
794 | ||
596bbe53 N |
795 | int nfsd_max_blksize; |
796 | ||
262a0982 CL |
797 | /** |
798 | * write_maxblksize - Set or report the current NFS blksize | |
799 | * | |
800 | * Input: | |
801 | * buf: ignored | |
802 | * size: zero | |
803 | * | |
804 | * OR | |
805 | * | |
806 | * Input: | |
807 | * buf: C string containing an unsigned | |
808 | * integer value representing the new | |
809 | * NFS blksize | |
810 | * size: non-zero length of C string in @buf | |
811 | * Output: | |
812 | * On success: passed-in buffer filled with '\n'-terminated C string | |
813 | * containing numeric value of the current NFS blksize | |
814 | * setting; | |
815 | * return code is the size in bytes of the string | |
816 | * On error: return code is zero or a negative errno value | |
817 | */ | |
596bbe53 N |
818 | static ssize_t write_maxblksize(struct file *file, char *buf, size_t size) |
819 | { | |
820 | char *mesg = buf; | |
821 | if (size > 0) { | |
822 | int bsize; | |
823 | int rv = get_int(&mesg, &bsize); | |
824 | if (rv) | |
825 | return rv; | |
826 | /* force bsize into allowed range and | |
827 | * required alignment. | |
828 | */ | |
829 | if (bsize < 1024) | |
830 | bsize = 1024; | |
831 | if (bsize > NFSSVC_MAXBLKSIZE) | |
832 | bsize = NFSSVC_MAXBLKSIZE; | |
833 | bsize &= ~(1024-1); | |
bedbdd8b | 834 | mutex_lock(&nfsd_mutex); |
7fa53cc8 | 835 | if (nfsd_serv) { |
bedbdd8b | 836 | mutex_unlock(&nfsd_mutex); |
596bbe53 N |
837 | return -EBUSY; |
838 | } | |
839 | nfsd_max_blksize = bsize; | |
bedbdd8b | 840 | mutex_unlock(&nfsd_mutex); |
596bbe53 | 841 | } |
e06b6405 CL |
842 | |
843 | return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", | |
844 | nfsd_max_blksize); | |
596bbe53 N |
845 | } |
846 | ||
70c3b76c | 847 | #ifdef CONFIG_NFSD_V4 |
f0135740 | 848 | static ssize_t __nfsd4_write_time(struct file *file, char *buf, size_t size, time_t *time) |
1da177e4 | 849 | { |
1da177e4 | 850 | char *mesg = buf; |
f0135740 | 851 | int rv, i; |
1da177e4 LT |
852 | |
853 | if (size > 0) { | |
3dd98a3b JL |
854 | if (nfsd_serv) |
855 | return -EBUSY; | |
f0135740 | 856 | rv = get_int(&mesg, &i); |
1da177e4 LT |
857 | if (rv) |
858 | return rv; | |
e7b184f1 BF |
859 | /* |
860 | * Some sanity checking. We don't have a reason for | |
861 | * these particular numbers, but problems with the | |
862 | * extremes are: | |
863 | * - Too short: the briefest network outage may | |
864 | * cause clients to lose all their locks. Also, | |
865 | * the frequent polling may be wasteful. | |
866 | * - Too long: do you really want reboot recovery | |
867 | * to take more than an hour? Or to make other | |
868 | * clients wait an hour before being able to | |
869 | * revoke a dead client's locks? | |
870 | */ | |
f0135740 | 871 | if (i < 10 || i > 3600) |
1da177e4 | 872 | return -EINVAL; |
f0135740 | 873 | *time = i; |
1da177e4 | 874 | } |
e06b6405 | 875 | |
f0135740 BF |
876 | return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%ld\n", *time); |
877 | } | |
878 | ||
879 | static ssize_t nfsd4_write_time(struct file *file, char *buf, size_t size, time_t *time) | |
880 | { | |
881 | ssize_t rv; | |
882 | ||
883 | mutex_lock(&nfsd_mutex); | |
884 | rv = __nfsd4_write_time(file, buf, size, time); | |
885 | mutex_unlock(&nfsd_mutex); | |
886 | return rv; | |
1da177e4 LT |
887 | } |
888 | ||
262a0982 CL |
889 | /** |
890 | * write_leasetime - Set or report the current NFSv4 lease time | |
891 | * | |
892 | * Input: | |
893 | * buf: ignored | |
894 | * size: zero | |
895 | * | |
896 | * OR | |
897 | * | |
898 | * Input: | |
899 | * buf: C string containing an unsigned | |
900 | * integer value representing the new | |
901 | * NFSv4 lease expiry time | |
902 | * size: non-zero length of C string in @buf | |
903 | * Output: | |
904 | * On success: passed-in buffer filled with '\n'-terminated C | |
905 | * string containing unsigned integer value of the | |
906 | * current lease expiry time; | |
907 | * return code is the size in bytes of the string | |
908 | * On error: return code is zero or a negative errno value | |
909 | */ | |
3dd98a3b JL |
910 | static ssize_t write_leasetime(struct file *file, char *buf, size_t size) |
911 | { | |
3d733711 SK |
912 | struct nfsd_net *nn = net_generic(&init_net, nfsd_net_id); |
913 | return nfsd4_write_time(file, buf, size, &nn->nfsd4_lease); | |
3dd98a3b JL |
914 | } |
915 | ||
efc4bb4f BF |
916 | /** |
917 | * write_gracetime - Set or report current NFSv4 grace period time | |
918 | * | |
919 | * As above, but sets the time of the NFSv4 grace period. | |
920 | * | |
921 | * Note this should never be set to less than the *previous* | |
922 | * lease-period time, but we don't try to enforce this. (In the common | |
923 | * case (a new boot), we don't know what the previous lease time was | |
924 | * anyway.) | |
925 | */ | |
926 | static ssize_t write_gracetime(struct file *file, char *buf, size_t size) | |
927 | { | |
928 | return nfsd4_write_time(file, buf, size, &nfsd4_grace); | |
929 | } | |
930 | ||
3dd98a3b | 931 | static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size) |
0964a3d3 N |
932 | { |
933 | char *mesg = buf; | |
934 | char *recdir; | |
935 | int len, status; | |
936 | ||
3dd98a3b JL |
937 | if (size > 0) { |
938 | if (nfsd_serv) | |
939 | return -EBUSY; | |
940 | if (size > PATH_MAX || buf[size-1] != '\n') | |
941 | return -EINVAL; | |
942 | buf[size-1] = 0; | |
0964a3d3 | 943 | |
3dd98a3b JL |
944 | recdir = mesg; |
945 | len = qword_get(&mesg, recdir, size); | |
946 | if (len <= 0) | |
947 | return -EINVAL; | |
0964a3d3 | 948 | |
3dd98a3b | 949 | status = nfs4_reset_recoverydir(recdir); |
69049961 AK |
950 | if (status) |
951 | return status; | |
3dd98a3b | 952 | } |
3d72ab8f CL |
953 | |
954 | return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s\n", | |
955 | nfs4_recoverydir()); | |
0964a3d3 | 956 | } |
3dd98a3b | 957 | |
262a0982 CL |
958 | /** |
959 | * write_recoverydir - Set or report the pathname of the recovery directory | |
960 | * | |
961 | * Input: | |
962 | * buf: ignored | |
963 | * size: zero | |
964 | * | |
965 | * OR | |
966 | * | |
967 | * Input: | |
968 | * buf: C string containing the pathname | |
969 | * of the directory on a local file | |
970 | * system containing permanent NFSv4 | |
971 | * recovery data | |
972 | * size: non-zero length of C string in @buf | |
973 | * Output: | |
974 | * On success: passed-in buffer filled with '\n'-terminated C string | |
975 | * containing the current recovery pathname setting; | |
976 | * return code is the size in bytes of the string | |
977 | * On error: return code is zero or a negative errno value | |
978 | */ | |
3dd98a3b JL |
979 | static ssize_t write_recoverydir(struct file *file, char *buf, size_t size) |
980 | { | |
981 | ssize_t rv; | |
982 | ||
983 | mutex_lock(&nfsd_mutex); | |
984 | rv = __write_recoverydir(file, buf, size); | |
985 | mutex_unlock(&nfsd_mutex); | |
986 | return rv; | |
987 | } | |
988 | ||
70c3b76c | 989 | #endif |
0964a3d3 | 990 | |
1da177e4 LT |
991 | /*----------------------------------------------------------------------------*/ |
992 | /* | |
993 | * populating the filesystem. | |
994 | */ | |
995 | ||
996 | static int nfsd_fill_super(struct super_block * sb, void * data, int silent) | |
997 | { | |
998 | static struct tree_descr nfsd_files[] = { | |
1da177e4 | 999 | [NFSD_List] = {"exports", &exports_operations, S_IRUGO}, |
e8e8753f BF |
1000 | [NFSD_Export_features] = {"export_features", |
1001 | &export_features_operations, S_IRUGO}, | |
4373ea84 WC |
1002 | [NFSD_FO_UnlockIP] = {"unlock_ip", |
1003 | &transaction_ops, S_IWUSR|S_IRUSR}, | |
17efa372 WC |
1004 | [NFSD_FO_UnlockFS] = {"unlock_filesystem", |
1005 | &transaction_ops, S_IWUSR|S_IRUSR}, | |
1da177e4 LT |
1006 | [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR}, |
1007 | [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR}, | |
eed2965a | 1008 | [NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR}, |
03cf6c9f | 1009 | [NFSD_Pool_Stats] = {"pool_stats", &pool_stats_operations, S_IRUGO}, |
70c3b76c | 1010 | [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR}, |
80212d59 | 1011 | [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO}, |
596bbe53 | 1012 | [NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO}, |
b084f598 | 1013 | #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE) |
b0b0c0a2 | 1014 | [NFSD_SupportedEnctypes] = {"supported_krb5_enctypes", &supported_enctypes_ops, S_IRUGO}, |
b084f598 | 1015 | #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */ |
1da177e4 LT |
1016 | #ifdef CONFIG_NFSD_V4 |
1017 | [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR}, | |
efc4bb4f | 1018 | [NFSD_Gracetime] = {"nfsv4gracetime", &transaction_ops, S_IWUSR|S_IRUSR}, |
0964a3d3 | 1019 | [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR}, |
1da177e4 LT |
1020 | #endif |
1021 | /* last one */ {""} | |
1022 | }; | |
1023 | return simple_fill_super(sb, 0x6e667364, nfsd_files); | |
1024 | } | |
1025 | ||
fc14f2fe AV |
1026 | static struct dentry *nfsd_mount(struct file_system_type *fs_type, |
1027 | int flags, const char *dev_name, void *data) | |
1da177e4 | 1028 | { |
fc14f2fe | 1029 | return mount_single(fs_type, flags, data, nfsd_fill_super); |
1da177e4 LT |
1030 | } |
1031 | ||
1032 | static struct file_system_type nfsd_fs_type = { | |
1033 | .owner = THIS_MODULE, | |
1034 | .name = "nfsd", | |
fc14f2fe | 1035 | .mount = nfsd_mount, |
1da177e4 LT |
1036 | .kill_sb = kill_litter_super, |
1037 | }; | |
1038 | ||
e331f606 BF |
1039 | #ifdef CONFIG_PROC_FS |
1040 | static int create_proc_exports_entry(void) | |
1041 | { | |
1042 | struct proc_dir_entry *entry; | |
1043 | ||
1044 | entry = proc_mkdir("fs/nfs", NULL); | |
1045 | if (!entry) | |
1046 | return -ENOMEM; | |
9ef2db26 | 1047 | entry = proc_create("exports", 0, entry, &exports_operations); |
e331f606 BF |
1048 | if (!entry) |
1049 | return -ENOMEM; | |
e331f606 BF |
1050 | return 0; |
1051 | } | |
1052 | #else /* CONFIG_PROC_FS */ | |
1053 | static int create_proc_exports_entry(void) | |
1054 | { | |
1055 | return 0; | |
1056 | } | |
1057 | #endif | |
1058 | ||
7ea34ac1 | 1059 | int nfsd_net_id; |
5717e012 SK |
1060 | |
1061 | static __net_init int nfsd_init_net(struct net *net) | |
1062 | { | |
1063 | int retval; | |
3d733711 | 1064 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
5717e012 SK |
1065 | |
1066 | retval = nfsd_export_init(net); | |
1067 | if (retval) | |
1068 | goto out_export_error; | |
f69adb2f SK |
1069 | retval = nfsd_idmap_init(net); |
1070 | if (retval) | |
1071 | goto out_idmap_error; | |
3d733711 | 1072 | nn->nfsd4_lease = 90; /* default lease time */ |
5717e012 SK |
1073 | return 0; |
1074 | ||
f69adb2f SK |
1075 | out_idmap_error: |
1076 | nfsd_export_shutdown(net); | |
5717e012 SK |
1077 | out_export_error: |
1078 | return retval; | |
1079 | } | |
1080 | ||
1081 | static __net_exit void nfsd_exit_net(struct net *net) | |
1082 | { | |
f69adb2f | 1083 | nfsd_idmap_shutdown(net); |
5717e012 SK |
1084 | nfsd_export_shutdown(net); |
1085 | } | |
1086 | ||
7ea34ac1 | 1087 | static struct pernet_operations nfsd_net_ops = { |
5717e012 SK |
1088 | .init = nfsd_init_net, |
1089 | .exit = nfsd_exit_net, | |
7ea34ac1 JL |
1090 | .id = &nfsd_net_id, |
1091 | .size = sizeof(struct nfsd_net), | |
1092 | }; | |
1093 | ||
1da177e4 LT |
1094 | static int __init init_nfsd(void) |
1095 | { | |
1096 | int retval; | |
1097 | printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n"); | |
1098 | ||
797a9d79 | 1099 | retval = register_cld_notifier(); |
813fd320 JL |
1100 | if (retval) |
1101 | return retval; | |
7ea34ac1 JL |
1102 | retval = register_pernet_subsys(&nfsd_net_ops); |
1103 | if (retval < 0) | |
813fd320 | 1104 | goto out_unregister_notifier; |
72083396 | 1105 | retval = nfsd4_init_slabs(); |
e8ff2a84 | 1106 | if (retval) |
7ea34ac1 | 1107 | goto out_unregister_pernet; |
72083396 | 1108 | nfs4_state_init(); |
65178db4 BS |
1109 | retval = nfsd_fault_inject_init(); /* nfsd fault injection controls */ |
1110 | if (retval) | |
1111 | goto out_free_slabs; | |
1da177e4 | 1112 | nfsd_stat_init(); /* Statistics */ |
d5c3428b BF |
1113 | retval = nfsd_reply_cache_init(); |
1114 | if (retval) | |
1115 | goto out_free_stat; | |
1da177e4 | 1116 | nfsd_lockd_init(); /* lockd->nfsd callbacks */ |
e331f606 BF |
1117 | retval = create_proc_exports_entry(); |
1118 | if (retval) | |
f69adb2f | 1119 | goto out_free_lockd; |
1da177e4 | 1120 | retval = register_filesystem(&nfsd_fs_type); |
26808d3f BF |
1121 | if (retval) |
1122 | goto out_free_all; | |
1123 | return 0; | |
1124 | out_free_all: | |
26808d3f BF |
1125 | remove_proc_entry("fs/nfs/exports", NULL); |
1126 | remove_proc_entry("fs/nfs", NULL); | |
dbf847ec | 1127 | out_free_lockd: |
26808d3f | 1128 | nfsd_lockd_shutdown(); |
e331f606 | 1129 | nfsd_reply_cache_shutdown(); |
d5c3428b BF |
1130 | out_free_stat: |
1131 | nfsd_stat_shutdown(); | |
65178db4 BS |
1132 | nfsd_fault_inject_cleanup(); |
1133 | out_free_slabs: | |
26808d3f | 1134 | nfsd4_free_slabs(); |
7ea34ac1 JL |
1135 | out_unregister_pernet: |
1136 | unregister_pernet_subsys(&nfsd_net_ops); | |
813fd320 | 1137 | out_unregister_notifier: |
797a9d79 | 1138 | unregister_cld_notifier(); |
1da177e4 LT |
1139 | return retval; |
1140 | } | |
1141 | ||
1142 | static void __exit exit_nfsd(void) | |
1143 | { | |
d5c3428b | 1144 | nfsd_reply_cache_shutdown(); |
1da177e4 LT |
1145 | remove_proc_entry("fs/nfs/exports", NULL); |
1146 | remove_proc_entry("fs/nfs", NULL); | |
1147 | nfsd_stat_shutdown(); | |
1148 | nfsd_lockd_shutdown(); | |
e8ff2a84 | 1149 | nfsd4_free_slabs(); |
65178db4 | 1150 | nfsd_fault_inject_cleanup(); |
1da177e4 | 1151 | unregister_filesystem(&nfsd_fs_type); |
7ea34ac1 | 1152 | unregister_pernet_subsys(&nfsd_net_ops); |
797a9d79 | 1153 | unregister_cld_notifier(); |
1da177e4 LT |
1154 | } |
1155 | ||
1156 | MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>"); | |
1157 | MODULE_LICENSE("GPL"); | |
1158 | module_init(init_nfsd) | |
1159 | module_exit(exit_nfsd) |