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 | { | |
130 | return seq_open(file, &nfs_exports_op); | |
131 | } | |
132 | ||
4b6f5d20 | 133 | static const struct file_operations exports_operations = { |
1da177e4 LT |
134 | .open = exports_open, |
135 | .read = seq_read, | |
136 | .llseek = seq_lseek, | |
137 | .release = seq_release, | |
9ef2db26 | 138 | .owner = THIS_MODULE, |
1da177e4 LT |
139 | }; |
140 | ||
e8e8753f BF |
141 | static int export_features_show(struct seq_file *m, void *v) |
142 | { | |
143 | seq_printf(m, "0x%x 0x%x\n", NFSEXP_ALLFLAGS, NFSEXP_SECINFO_FLAGS); | |
144 | return 0; | |
145 | } | |
146 | ||
147 | static int export_features_open(struct inode *inode, struct file *file) | |
148 | { | |
149 | return single_open(file, export_features_show, NULL); | |
150 | } | |
151 | ||
152 | static struct file_operations export_features_operations = { | |
153 | .open = export_features_open, | |
154 | .read = seq_read, | |
155 | .llseek = seq_lseek, | |
156 | .release = single_release, | |
157 | }; | |
158 | ||
b084f598 | 159 | #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE) |
b0b0c0a2 KC |
160 | static int supported_enctypes_show(struct seq_file *m, void *v) |
161 | { | |
b084f598 | 162 | seq_printf(m, KRB5_SUPPORTED_ENCTYPES); |
b0b0c0a2 KC |
163 | return 0; |
164 | } | |
165 | ||
166 | static int supported_enctypes_open(struct inode *inode, struct file *file) | |
167 | { | |
168 | return single_open(file, supported_enctypes_show, NULL); | |
169 | } | |
170 | ||
171 | static struct file_operations supported_enctypes_ops = { | |
172 | .open = supported_enctypes_open, | |
173 | .read = seq_read, | |
174 | .llseek = seq_lseek, | |
175 | .release = single_release, | |
176 | }; | |
b084f598 | 177 | #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */ |
b0b0c0a2 | 178 | |
03cf6c9f | 179 | extern int nfsd_pool_stats_open(struct inode *inode, struct file *file); |
ed2d8aed | 180 | extern int nfsd_pool_stats_release(struct inode *inode, struct file *file); |
03cf6c9f | 181 | |
828c0950 | 182 | static const struct file_operations pool_stats_operations = { |
03cf6c9f GB |
183 | .open = nfsd_pool_stats_open, |
184 | .read = seq_read, | |
185 | .llseek = seq_lseek, | |
ed2d8aed | 186 | .release = nfsd_pool_stats_release, |
03cf6c9f GB |
187 | .owner = THIS_MODULE, |
188 | }; | |
189 | ||
1da177e4 LT |
190 | /*----------------------------------------------------------------------------*/ |
191 | /* | |
192 | * payload - write methods | |
1da177e4 LT |
193 | */ |
194 | ||
1da177e4 | 195 | |
262a0982 CL |
196 | /** |
197 | * write_unlock_ip - Release all locks used by a client | |
198 | * | |
199 | * Experimental. | |
200 | * | |
201 | * Input: | |
202 | * buf: '\n'-terminated C string containing a | |
4116092b | 203 | * presentation format IP address |
262a0982 CL |
204 | * size: length of C string in @buf |
205 | * Output: | |
206 | * On success: returns zero if all specified locks were released; | |
207 | * returns one if one or more locks were not released | |
208 | * On error: return code is negative errno value | |
262a0982 | 209 | */ |
b046ccdc | 210 | static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size) |
4373ea84 | 211 | { |
4116092b CL |
212 | struct sockaddr_storage address; |
213 | struct sockaddr *sap = (struct sockaddr *)&address; | |
214 | size_t salen = sizeof(address); | |
367c8c7b | 215 | char *fo_path; |
4373ea84 WC |
216 | |
217 | /* sanity check */ | |
218 | if (size == 0) | |
219 | return -EINVAL; | |
220 | ||
221 | if (buf[size-1] != '\n') | |
222 | return -EINVAL; | |
223 | ||
224 | fo_path = buf; | |
225 | if (qword_get(&buf, fo_path, size) < 0) | |
226 | return -EINVAL; | |
227 | ||
90100b17 | 228 | if (rpc_pton(&init_net, fo_path, size, sap, salen) == 0) |
4373ea84 | 229 | return -EINVAL; |
4373ea84 | 230 | |
4116092b | 231 | return nlmsvc_unlock_all_by_ip(sap); |
4373ea84 WC |
232 | } |
233 | ||
262a0982 CL |
234 | /** |
235 | * write_unlock_fs - Release all locks on a local file system | |
236 | * | |
237 | * Experimental. | |
238 | * | |
239 | * Input: | |
240 | * buf: '\n'-terminated C string containing the | |
241 | * absolute pathname of a local file system | |
242 | * size: length of C string in @buf | |
243 | * Output: | |
244 | * On success: returns zero if all specified locks were released; | |
245 | * returns one if one or more locks were not released | |
246 | * On error: return code is negative errno value | |
247 | */ | |
b046ccdc | 248 | static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size) |
17efa372 | 249 | { |
a63bb996 | 250 | struct path path; |
17efa372 WC |
251 | char *fo_path; |
252 | int error; | |
253 | ||
254 | /* sanity check */ | |
255 | if (size == 0) | |
256 | return -EINVAL; | |
257 | ||
258 | if (buf[size-1] != '\n') | |
259 | return -EINVAL; | |
260 | ||
261 | fo_path = buf; | |
262 | if (qword_get(&buf, fo_path, size) < 0) | |
263 | return -EINVAL; | |
264 | ||
a63bb996 | 265 | error = kern_path(fo_path, 0, &path); |
17efa372 WC |
266 | if (error) |
267 | return error; | |
268 | ||
262a0982 CL |
269 | /* |
270 | * XXX: Needs better sanity checking. Otherwise we could end up | |
271 | * releasing locks on the wrong file system. | |
272 | * | |
273 | * For example: | |
274 | * 1. Does the path refer to a directory? | |
275 | * 2. Is that directory a mount point, or | |
276 | * 3. Is that directory the root of an exported file system? | |
277 | */ | |
d8c9584e | 278 | error = nlmsvc_unlock_all_by_sb(path.dentry->d_sb); |
17efa372 | 279 | |
a63bb996 | 280 | path_put(&path); |
17efa372 WC |
281 | return error; |
282 | } | |
283 | ||
262a0982 CL |
284 | /** |
285 | * write_filehandle - Get a variable-length NFS file handle by path | |
286 | * | |
287 | * On input, the buffer contains a '\n'-terminated C string comprised of | |
288 | * three alphanumeric words separated by whitespace. The string may | |
289 | * contain escape sequences. | |
290 | * | |
291 | * Input: | |
292 | * buf: | |
293 | * domain: client domain name | |
294 | * path: export pathname | |
295 | * maxsize: numeric maximum size of | |
296 | * @buf | |
297 | * size: length of C string in @buf | |
298 | * Output: | |
299 | * On success: passed-in buffer filled with '\n'-terminated C | |
300 | * string containing a ASCII hex text version | |
301 | * of the NFS file handle; | |
302 | * return code is the size in bytes of the string | |
303 | * On error: return code is negative errno value | |
304 | */ | |
1da177e4 LT |
305 | static ssize_t write_filehandle(struct file *file, char *buf, size_t size) |
306 | { | |
1da177e4 | 307 | char *dname, *path; |
246d95ba | 308 | int uninitialized_var(maxsize); |
1da177e4 LT |
309 | char *mesg = buf; |
310 | int len; | |
311 | struct auth_domain *dom; | |
312 | struct knfsd_fh fh; | |
313 | ||
87d26ea7 BF |
314 | if (size == 0) |
315 | return -EINVAL; | |
316 | ||
1da177e4 LT |
317 | if (buf[size-1] != '\n') |
318 | return -EINVAL; | |
319 | buf[size-1] = 0; | |
320 | ||
321 | dname = mesg; | |
322 | len = qword_get(&mesg, dname, size); | |
54224f04 CL |
323 | if (len <= 0) |
324 | return -EINVAL; | |
1da177e4 LT |
325 | |
326 | path = dname+len+1; | |
327 | len = qword_get(&mesg, path, size); | |
54224f04 CL |
328 | if (len <= 0) |
329 | return -EINVAL; | |
1da177e4 LT |
330 | |
331 | len = get_int(&mesg, &maxsize); | |
332 | if (len) | |
333 | return len; | |
334 | ||
335 | if (maxsize < NFS_FHSIZE) | |
336 | return -EINVAL; | |
337 | if (maxsize > NFS3_FHSIZE) | |
338 | maxsize = NFS3_FHSIZE; | |
339 | ||
340 | if (qword_get(&mesg, mesg, size)>0) | |
341 | return -EINVAL; | |
342 | ||
343 | /* we have all the words, they are in buf.. */ | |
344 | dom = unix_domain_find(dname); | |
345 | if (!dom) | |
346 | return -ENOMEM; | |
347 | ||
348 | len = exp_rootfh(dom, path, &fh, maxsize); | |
349 | auth_domain_put(dom); | |
350 | if (len) | |
351 | return len; | |
352 | ||
54224f04 CL |
353 | mesg = buf; |
354 | len = SIMPLE_TRANSACTION_LIMIT; | |
1da177e4 LT |
355 | qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size); |
356 | mesg[-1] = '\n'; | |
357 | return mesg - buf; | |
358 | } | |
359 | ||
262a0982 CL |
360 | /** |
361 | * write_threads - Start NFSD, or report the current number of running threads | |
362 | * | |
363 | * Input: | |
364 | * buf: ignored | |
365 | * size: zero | |
366 | * Output: | |
367 | * On success: passed-in buffer filled with '\n'-terminated C | |
368 | * string numeric value representing the number of | |
369 | * running NFSD threads; | |
370 | * return code is the size in bytes of the string | |
371 | * On error: return code is zero | |
372 | * | |
373 | * OR | |
374 | * | |
375 | * Input: | |
376 | * buf: C string containing an unsigned | |
377 | * integer value representing the | |
378 | * number of NFSD threads to start | |
379 | * size: non-zero length of C string in @buf | |
380 | * Output: | |
381 | * On success: NFS service is started; | |
382 | * passed-in buffer filled with '\n'-terminated C | |
383 | * string numeric value representing the number of | |
384 | * running NFSD threads; | |
385 | * return code is the size in bytes of the string | |
386 | * On error: return code is zero or a negative errno value | |
387 | */ | |
1da177e4 LT |
388 | static ssize_t write_threads(struct file *file, char *buf, size_t size) |
389 | { | |
1da177e4 LT |
390 | char *mesg = buf; |
391 | int rv; | |
392 | if (size > 0) { | |
393 | int newthreads; | |
394 | rv = get_int(&mesg, &newthreads); | |
395 | if (rv) | |
396 | return rv; | |
9e074856 | 397 | if (newthreads < 0) |
1da177e4 | 398 | return -EINVAL; |
9e074856 | 399 | rv = nfsd_svc(NFS_PORT, newthreads); |
82e12fe9 | 400 | if (rv < 0) |
1da177e4 | 401 | return rv; |
82e12fe9 N |
402 | } else |
403 | rv = nfsd_nrthreads(); | |
e06b6405 | 404 | |
82e12fe9 | 405 | return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", rv); |
1da177e4 LT |
406 | } |
407 | ||
262a0982 CL |
408 | /** |
409 | * write_pool_threads - Set or report the current number of threads per pool | |
410 | * | |
411 | * Input: | |
412 | * buf: ignored | |
413 | * size: zero | |
414 | * | |
415 | * OR | |
416 | * | |
417 | * Input: | |
418 | * buf: C string containing whitespace- | |
419 | * separated unsigned integer values | |
420 | * representing the number of NFSD | |
421 | * threads to start in each pool | |
422 | * size: non-zero length of C string in @buf | |
423 | * Output: | |
424 | * On success: passed-in buffer filled with '\n'-terminated C | |
425 | * string containing integer values representing the | |
426 | * number of NFSD threads in each pool; | |
427 | * return code is the size in bytes of the string | |
428 | * On error: return code is zero or a negative errno value | |
429 | */ | |
eed2965a GB |
430 | static ssize_t write_pool_threads(struct file *file, char *buf, size_t size) |
431 | { | |
432 | /* if size > 0, look for an array of number of threads per node | |
433 | * and apply them then write out number of threads per node as reply | |
434 | */ | |
435 | char *mesg = buf; | |
436 | int i; | |
437 | int rv; | |
438 | int len; | |
bedbdd8b | 439 | int npools; |
eed2965a GB |
440 | int *nthreads; |
441 | ||
bedbdd8b NB |
442 | mutex_lock(&nfsd_mutex); |
443 | npools = nfsd_nrpools(); | |
eed2965a GB |
444 | if (npools == 0) { |
445 | /* | |
446 | * NFS is shut down. The admin can start it by | |
447 | * writing to the threads file but NOT the pool_threads | |
448 | * file, sorry. Report zero threads. | |
449 | */ | |
bedbdd8b | 450 | mutex_unlock(&nfsd_mutex); |
eed2965a GB |
451 | strcpy(buf, "0\n"); |
452 | return strlen(buf); | |
453 | } | |
454 | ||
455 | nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL); | |
bedbdd8b | 456 | rv = -ENOMEM; |
eed2965a | 457 | if (nthreads == NULL) |
bedbdd8b | 458 | goto out_free; |
eed2965a GB |
459 | |
460 | if (size > 0) { | |
461 | for (i = 0; i < npools; i++) { | |
462 | rv = get_int(&mesg, &nthreads[i]); | |
463 | if (rv == -ENOENT) | |
464 | break; /* fewer numbers than pools */ | |
465 | if (rv) | |
466 | goto out_free; /* syntax error */ | |
467 | rv = -EINVAL; | |
468 | if (nthreads[i] < 0) | |
469 | goto out_free; | |
470 | } | |
471 | rv = nfsd_set_nrthreads(i, nthreads); | |
472 | if (rv) | |
473 | goto out_free; | |
474 | } | |
475 | ||
476 | rv = nfsd_get_nrthreads(npools, nthreads); | |
477 | if (rv) | |
478 | goto out_free; | |
479 | ||
480 | mesg = buf; | |
481 | size = SIMPLE_TRANSACTION_LIMIT; | |
482 | for (i = 0; i < npools && size > 0; i++) { | |
483 | snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? '\n' : ' ')); | |
484 | len = strlen(mesg); | |
485 | size -= len; | |
486 | mesg += len; | |
487 | } | |
413d63d7 | 488 | rv = mesg - buf; |
eed2965a GB |
489 | out_free: |
490 | kfree(nthreads); | |
bedbdd8b | 491 | mutex_unlock(&nfsd_mutex); |
eed2965a GB |
492 | return rv; |
493 | } | |
494 | ||
3dd98a3b | 495 | static ssize_t __write_versions(struct file *file, char *buf, size_t size) |
70c3b76c | 496 | { |
70c3b76c | 497 | char *mesg = buf; |
8daf220a | 498 | char *vers, *minorp, sign; |
261758b5 | 499 | int len, num, remaining; |
8daf220a | 500 | unsigned minor; |
70c3b76c N |
501 | ssize_t tlen = 0; |
502 | char *sep; | |
503 | ||
504 | if (size>0) { | |
505 | if (nfsd_serv) | |
6658d3a7 N |
506 | /* Cannot change versions without updating |
507 | * nfsd_serv->sv_xdrsize, and reallocing | |
508 | * rq_argp and rq_resp | |
509 | */ | |
70c3b76c N |
510 | return -EBUSY; |
511 | if (buf[size-1] != '\n') | |
512 | return -EINVAL; | |
513 | buf[size-1] = 0; | |
514 | ||
515 | vers = mesg; | |
516 | len = qword_get(&mesg, vers, size); | |
517 | if (len <= 0) return -EINVAL; | |
518 | do { | |
519 | sign = *vers; | |
520 | if (sign == '+' || sign == '-') | |
8daf220a | 521 | num = simple_strtol((vers+1), &minorp, 0); |
70c3b76c | 522 | else |
8daf220a BH |
523 | num = simple_strtol(vers, &minorp, 0); |
524 | if (*minorp == '.') { | |
525 | if (num < 4) | |
526 | return -EINVAL; | |
527 | minor = simple_strtoul(minorp+1, NULL, 0); | |
528 | if (minor == 0) | |
529 | return -EINVAL; | |
530 | if (nfsd_minorversion(minor, sign == '-' ? | |
531 | NFSD_CLEAR : NFSD_SET) < 0) | |
532 | return -EINVAL; | |
533 | goto next; | |
534 | } | |
70c3b76c N |
535 | switch(num) { |
536 | case 2: | |
537 | case 3: | |
538 | case 4: | |
6658d3a7 | 539 | nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET); |
70c3b76c N |
540 | break; |
541 | default: | |
542 | return -EINVAL; | |
543 | } | |
8daf220a | 544 | next: |
70c3b76c | 545 | vers += len + 1; |
70c3b76c N |
546 | } while ((len = qword_get(&mesg, vers, size)) > 0); |
547 | /* If all get turned off, turn them back on, as | |
548 | * having no versions is BAD | |
549 | */ | |
6658d3a7 | 550 | nfsd_reset_versions(); |
70c3b76c | 551 | } |
261758b5 | 552 | |
70c3b76c N |
553 | /* Now write current state into reply buffer */ |
554 | len = 0; | |
555 | sep = ""; | |
261758b5 | 556 | remaining = SIMPLE_TRANSACTION_LIMIT; |
70c3b76c | 557 | for (num=2 ; num <= 4 ; num++) |
6658d3a7 | 558 | if (nfsd_vers(num, NFSD_AVAIL)) { |
261758b5 | 559 | len = snprintf(buf, remaining, "%s%c%d", sep, |
6658d3a7 | 560 | nfsd_vers(num, NFSD_TEST)?'+':'-', |
70c3b76c N |
561 | num); |
562 | sep = " "; | |
261758b5 CL |
563 | |
564 | if (len > remaining) | |
565 | break; | |
566 | remaining -= len; | |
567 | buf += len; | |
568 | tlen += len; | |
70c3b76c | 569 | } |
8daf220a | 570 | if (nfsd_vers(4, NFSD_AVAIL)) |
261758b5 CL |
571 | for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION; |
572 | minor++) { | |
573 | len = snprintf(buf, remaining, " %c4.%u", | |
8daf220a BH |
574 | (nfsd_vers(4, NFSD_TEST) && |
575 | nfsd_minorversion(minor, NFSD_TEST)) ? | |
576 | '+' : '-', | |
577 | minor); | |
261758b5 CL |
578 | |
579 | if (len > remaining) | |
580 | break; | |
581 | remaining -= len; | |
582 | buf += len; | |
583 | tlen += len; | |
584 | } | |
585 | ||
586 | len = snprintf(buf, remaining, "\n"); | |
587 | if (len > remaining) | |
588 | return -EINVAL; | |
589 | return tlen + len; | |
70c3b76c N |
590 | } |
591 | ||
262a0982 CL |
592 | /** |
593 | * write_versions - Set or report the available NFS protocol versions | |
594 | * | |
595 | * Input: | |
596 | * buf: ignored | |
597 | * size: zero | |
598 | * Output: | |
599 | * On success: passed-in buffer filled with '\n'-terminated C | |
600 | * string containing positive or negative integer | |
601 | * values representing the current status of each | |
602 | * protocol version; | |
603 | * return code is the size in bytes of the string | |
604 | * On error: return code is zero or a negative errno value | |
605 | * | |
606 | * OR | |
607 | * | |
608 | * Input: | |
609 | * buf: C string containing whitespace- | |
610 | * separated positive or negative | |
611 | * integer values representing NFS | |
612 | * protocol versions to enable ("+n") | |
613 | * or disable ("-n") | |
614 | * size: non-zero length of C string in @buf | |
615 | * Output: | |
616 | * On success: status of zero or more protocol versions has | |
617 | * been updated; passed-in buffer filled with | |
618 | * '\n'-terminated C string containing positive | |
619 | * or negative integer values representing the | |
620 | * current status of each protocol version; | |
621 | * return code is the size in bytes of the string | |
622 | * On error: return code is zero or a negative errno value | |
623 | */ | |
3dd98a3b JL |
624 | static ssize_t write_versions(struct file *file, char *buf, size_t size) |
625 | { | |
626 | ssize_t rv; | |
627 | ||
628 | mutex_lock(&nfsd_mutex); | |
629 | rv = __write_versions(file, buf, size); | |
630 | mutex_unlock(&nfsd_mutex); | |
631 | return rv; | |
632 | } | |
633 | ||
0a5372d8 CL |
634 | /* |
635 | * Zero-length write. Return a list of NFSD's current listener | |
636 | * transports. | |
637 | */ | |
638 | static ssize_t __write_ports_names(char *buf) | |
639 | { | |
640 | if (nfsd_serv == NULL) | |
641 | return 0; | |
335c54bd | 642 | return svc_xprt_names(nfsd_serv, buf, SIMPLE_TRANSACTION_LIMIT); |
0a5372d8 CL |
643 | } |
644 | ||
0b7c2f6f CL |
645 | /* |
646 | * A single 'fd' number was written, in which case it must be for | |
647 | * a socket of a supported family/protocol, and we use it as an | |
648 | * nfsd listener. | |
649 | */ | |
650 | static ssize_t __write_ports_addfd(char *buf) | |
651 | { | |
652 | char *mesg = buf; | |
653 | int fd, err; | |
654 | ||
655 | err = get_int(&mesg, &fd); | |
656 | if (err != 0 || fd < 0) | |
657 | return -EINVAL; | |
658 | ||
659 | err = nfsd_create_serv(); | |
660 | if (err != 0) | |
661 | return err; | |
662 | ||
bfba9ab4 | 663 | err = svc_addsock(nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT); |
78a8d7c8 | 664 | if (err < 0) { |
78a8d7c8 JL |
665 | svc_destroy(nfsd_serv); |
666 | return err; | |
667 | } | |
0b7c2f6f | 668 | |
ea068bad CL |
669 | /* Decrease the count, but don't shut down the service */ |
670 | nfsd_serv->sv_nrthreads--; | |
671 | return err; | |
0b7c2f6f CL |
672 | } |
673 | ||
82d56591 CL |
674 | /* |
675 | * A '-' followed by the 'name' of a socket means we close the socket. | |
676 | */ | |
677 | static ssize_t __write_ports_delfd(char *buf) | |
678 | { | |
679 | char *toclose; | |
680 | int len = 0; | |
681 | ||
682 | toclose = kstrdup(buf + 1, GFP_KERNEL); | |
683 | if (toclose == NULL) | |
684 | return -ENOMEM; | |
685 | ||
686 | if (nfsd_serv != NULL) | |
8435d34d CL |
687 | len = svc_sock_names(nfsd_serv, buf, |
688 | SIMPLE_TRANSACTION_LIMIT, toclose); | |
82d56591 CL |
689 | kfree(toclose); |
690 | return len; | |
691 | } | |
692 | ||
4eb68c26 CL |
693 | /* |
694 | * A transport listener is added by writing it's transport name and | |
695 | * a port number. | |
696 | */ | |
697 | static ssize_t __write_ports_addxprt(char *buf) | |
698 | { | |
699 | char transport[16]; | |
37498292 | 700 | struct svc_xprt *xprt; |
4eb68c26 CL |
701 | int port, err; |
702 | ||
703 | if (sscanf(buf, "%15s %4u", transport, &port) != 2) | |
704 | return -EINVAL; | |
705 | ||
4be929be | 706 | if (port < 1 || port > USHRT_MAX) |
4eb68c26 CL |
707 | return -EINVAL; |
708 | ||
709 | err = nfsd_create_serv(); | |
710 | if (err != 0) | |
711 | return err; | |
712 | ||
fc5d00b0 | 713 | err = svc_create_xprt(nfsd_serv, transport, &init_net, |
4eb68c26 | 714 | PF_INET, port, SVC_SOCK_ANONYMOUS); |
68717908 | 715 | if (err < 0) |
37498292 CL |
716 | goto out_err; |
717 | ||
fc5d00b0 | 718 | err = svc_create_xprt(nfsd_serv, transport, &init_net, |
37498292 CL |
719 | PF_INET6, port, SVC_SOCK_ANONYMOUS); |
720 | if (err < 0 && err != -EAFNOSUPPORT) | |
721 | goto out_close; | |
0cd14a06 JL |
722 | |
723 | /* Decrease the count, but don't shut down the service */ | |
724 | nfsd_serv->sv_nrthreads--; | |
4eb68c26 | 725 | return 0; |
37498292 | 726 | out_close: |
4cb54ca2 | 727 | xprt = svc_find_xprt(nfsd_serv, transport, &init_net, PF_INET, port); |
37498292 CL |
728 | if (xprt != NULL) { |
729 | svc_close_xprt(xprt); | |
730 | svc_xprt_put(xprt); | |
731 | } | |
732 | out_err: | |
0cd14a06 | 733 | svc_destroy(nfsd_serv); |
37498292 | 734 | return err; |
4eb68c26 CL |
735 | } |
736 | ||
4cd5dc75 CL |
737 | /* |
738 | * A transport listener is removed by writing a "-", it's transport | |
739 | * name, and it's port number. | |
740 | */ | |
741 | static ssize_t __write_ports_delxprt(char *buf) | |
742 | { | |
743 | struct svc_xprt *xprt; | |
744 | char transport[16]; | |
745 | int port; | |
746 | ||
747 | if (sscanf(&buf[1], "%15s %4u", transport, &port) != 2) | |
748 | return -EINVAL; | |
749 | ||
4be929be | 750 | if (port < 1 || port > USHRT_MAX || nfsd_serv == NULL) |
4cd5dc75 CL |
751 | return -EINVAL; |
752 | ||
4cb54ca2 | 753 | xprt = svc_find_xprt(nfsd_serv, transport, &init_net, AF_UNSPEC, port); |
4cd5dc75 CL |
754 | if (xprt == NULL) |
755 | return -ENOTCONN; | |
756 | ||
757 | svc_close_xprt(xprt); | |
758 | svc_xprt_put(xprt); | |
759 | return 0; | |
760 | } | |
761 | ||
bedbdd8b | 762 | static ssize_t __write_ports(struct file *file, char *buf, size_t size) |
80212d59 | 763 | { |
0a5372d8 CL |
764 | if (size == 0) |
765 | return __write_ports_names(buf); | |
0b7c2f6f CL |
766 | |
767 | if (isdigit(buf[0])) | |
768 | return __write_ports_addfd(buf); | |
82d56591 CL |
769 | |
770 | if (buf[0] == '-' && isdigit(buf[1])) | |
771 | return __write_ports_delfd(buf); | |
4eb68c26 CL |
772 | |
773 | if (isalpha(buf[0])) | |
774 | return __write_ports_addxprt(buf); | |
4cd5dc75 CL |
775 | |
776 | if (buf[0] == '-' && isalpha(buf[1])) | |
777 | return __write_ports_delxprt(buf); | |
778 | ||
b41b66d6 | 779 | return -EINVAL; |
80212d59 N |
780 | } |
781 | ||
262a0982 CL |
782 | /** |
783 | * write_ports - Pass a socket file descriptor or transport name to listen on | |
784 | * | |
785 | * Input: | |
786 | * buf: ignored | |
787 | * size: zero | |
788 | * Output: | |
789 | * On success: passed-in buffer filled with a '\n'-terminated C | |
790 | * string containing a whitespace-separated list of | |
791 | * named NFSD listeners; | |
792 | * return code is the size in bytes of the string | |
793 | * On error: return code is zero or a negative errno value | |
794 | * | |
795 | * OR | |
796 | * | |
797 | * Input: | |
798 | * buf: C string containing an unsigned | |
799 | * integer value representing a bound | |
800 | * but unconnected socket that is to be | |
c71206a7 CL |
801 | * used as an NFSD listener; listen(3) |
802 | * must be called for a SOCK_STREAM | |
803 | * socket, otherwise it is ignored | |
262a0982 CL |
804 | * size: non-zero length of C string in @buf |
805 | * Output: | |
806 | * On success: NFS service is started; | |
807 | * passed-in buffer filled with a '\n'-terminated C | |
808 | * string containing a unique alphanumeric name of | |
809 | * the listener; | |
810 | * return code is the size in bytes of the string | |
811 | * On error: return code is a negative errno value | |
812 | * | |
813 | * OR | |
814 | * | |
815 | * Input: | |
816 | * buf: C string containing a "-" followed | |
817 | * by an integer value representing a | |
818 | * previously passed in socket file | |
819 | * descriptor | |
820 | * size: non-zero length of C string in @buf | |
821 | * Output: | |
822 | * On success: NFS service no longer listens on that socket; | |
823 | * passed-in buffer filled with a '\n'-terminated C | |
824 | * string containing a unique name of the listener; | |
825 | * return code is the size in bytes of the string | |
826 | * On error: return code is a negative errno value | |
827 | * | |
828 | * OR | |
829 | * | |
830 | * Input: | |
831 | * buf: C string containing a transport | |
832 | * name and an unsigned integer value | |
833 | * representing the port to listen on, | |
834 | * separated by whitespace | |
835 | * size: non-zero length of C string in @buf | |
836 | * Output: | |
837 | * On success: returns zero; NFS service is started | |
838 | * On error: return code is a negative errno value | |
839 | * | |
840 | * OR | |
841 | * | |
842 | * Input: | |
843 | * buf: C string containing a "-" followed | |
844 | * by a transport name and an unsigned | |
845 | * integer value representing the port | |
846 | * to listen on, separated by whitespace | |
847 | * size: non-zero length of C string in @buf | |
848 | * Output: | |
849 | * On success: returns zero; NFS service no longer listens | |
850 | * on that transport | |
851 | * On error: return code is a negative errno value | |
852 | */ | |
bedbdd8b NB |
853 | static ssize_t write_ports(struct file *file, char *buf, size_t size) |
854 | { | |
855 | ssize_t rv; | |
3dd98a3b | 856 | |
bedbdd8b NB |
857 | mutex_lock(&nfsd_mutex); |
858 | rv = __write_ports(file, buf, size); | |
859 | mutex_unlock(&nfsd_mutex); | |
860 | return rv; | |
861 | } | |
862 | ||
863 | ||
596bbe53 N |
864 | int nfsd_max_blksize; |
865 | ||
262a0982 CL |
866 | /** |
867 | * write_maxblksize - Set or report the current NFS blksize | |
868 | * | |
869 | * Input: | |
870 | * buf: ignored | |
871 | * size: zero | |
872 | * | |
873 | * OR | |
874 | * | |
875 | * Input: | |
876 | * buf: C string containing an unsigned | |
877 | * integer value representing the new | |
878 | * NFS blksize | |
879 | * size: non-zero length of C string in @buf | |
880 | * Output: | |
881 | * On success: passed-in buffer filled with '\n'-terminated C string | |
882 | * containing numeric value of the current NFS blksize | |
883 | * setting; | |
884 | * return code is the size in bytes of the string | |
885 | * On error: return code is zero or a negative errno value | |
886 | */ | |
596bbe53 N |
887 | static ssize_t write_maxblksize(struct file *file, char *buf, size_t size) |
888 | { | |
889 | char *mesg = buf; | |
890 | if (size > 0) { | |
891 | int bsize; | |
892 | int rv = get_int(&mesg, &bsize); | |
893 | if (rv) | |
894 | return rv; | |
895 | /* force bsize into allowed range and | |
896 | * required alignment. | |
897 | */ | |
898 | if (bsize < 1024) | |
899 | bsize = 1024; | |
900 | if (bsize > NFSSVC_MAXBLKSIZE) | |
901 | bsize = NFSSVC_MAXBLKSIZE; | |
902 | bsize &= ~(1024-1); | |
bedbdd8b | 903 | mutex_lock(&nfsd_mutex); |
7fa53cc8 | 904 | if (nfsd_serv) { |
bedbdd8b | 905 | mutex_unlock(&nfsd_mutex); |
596bbe53 N |
906 | return -EBUSY; |
907 | } | |
908 | nfsd_max_blksize = bsize; | |
bedbdd8b | 909 | mutex_unlock(&nfsd_mutex); |
596bbe53 | 910 | } |
e06b6405 CL |
911 | |
912 | return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", | |
913 | nfsd_max_blksize); | |
596bbe53 N |
914 | } |
915 | ||
70c3b76c | 916 | #ifdef CONFIG_NFSD_V4 |
f0135740 | 917 | static ssize_t __nfsd4_write_time(struct file *file, char *buf, size_t size, time_t *time) |
1da177e4 | 918 | { |
1da177e4 | 919 | char *mesg = buf; |
f0135740 | 920 | int rv, i; |
1da177e4 LT |
921 | |
922 | if (size > 0) { | |
3dd98a3b JL |
923 | if (nfsd_serv) |
924 | return -EBUSY; | |
f0135740 | 925 | rv = get_int(&mesg, &i); |
1da177e4 LT |
926 | if (rv) |
927 | return rv; | |
e7b184f1 BF |
928 | /* |
929 | * Some sanity checking. We don't have a reason for | |
930 | * these particular numbers, but problems with the | |
931 | * extremes are: | |
932 | * - Too short: the briefest network outage may | |
933 | * cause clients to lose all their locks. Also, | |
934 | * the frequent polling may be wasteful. | |
935 | * - Too long: do you really want reboot recovery | |
936 | * to take more than an hour? Or to make other | |
937 | * clients wait an hour before being able to | |
938 | * revoke a dead client's locks? | |
939 | */ | |
f0135740 | 940 | if (i < 10 || i > 3600) |
1da177e4 | 941 | return -EINVAL; |
f0135740 | 942 | *time = i; |
1da177e4 | 943 | } |
e06b6405 | 944 | |
f0135740 BF |
945 | return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%ld\n", *time); |
946 | } | |
947 | ||
948 | static ssize_t nfsd4_write_time(struct file *file, char *buf, size_t size, time_t *time) | |
949 | { | |
950 | ssize_t rv; | |
951 | ||
952 | mutex_lock(&nfsd_mutex); | |
953 | rv = __nfsd4_write_time(file, buf, size, time); | |
954 | mutex_unlock(&nfsd_mutex); | |
955 | return rv; | |
1da177e4 LT |
956 | } |
957 | ||
262a0982 CL |
958 | /** |
959 | * write_leasetime - Set or report the current NFSv4 lease time | |
960 | * | |
961 | * Input: | |
962 | * buf: ignored | |
963 | * size: zero | |
964 | * | |
965 | * OR | |
966 | * | |
967 | * Input: | |
968 | * buf: C string containing an unsigned | |
969 | * integer value representing the new | |
970 | * NFSv4 lease expiry time | |
971 | * size: non-zero length of C string in @buf | |
972 | * Output: | |
973 | * On success: passed-in buffer filled with '\n'-terminated C | |
974 | * string containing unsigned integer value of the | |
975 | * current lease expiry time; | |
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_leasetime(struct file *file, char *buf, size_t size) |
980 | { | |
f0135740 | 981 | return nfsd4_write_time(file, buf, size, &nfsd4_lease); |
3dd98a3b JL |
982 | } |
983 | ||
efc4bb4f BF |
984 | /** |
985 | * write_gracetime - Set or report current NFSv4 grace period time | |
986 | * | |
987 | * As above, but sets the time of the NFSv4 grace period. | |
988 | * | |
989 | * Note this should never be set to less than the *previous* | |
990 | * lease-period time, but we don't try to enforce this. (In the common | |
991 | * case (a new boot), we don't know what the previous lease time was | |
992 | * anyway.) | |
993 | */ | |
994 | static ssize_t write_gracetime(struct file *file, char *buf, size_t size) | |
995 | { | |
996 | return nfsd4_write_time(file, buf, size, &nfsd4_grace); | |
997 | } | |
998 | ||
3dd98a3b JL |
999 | extern char *nfs4_recoverydir(void); |
1000 | ||
1001 | static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size) | |
0964a3d3 N |
1002 | { |
1003 | char *mesg = buf; | |
1004 | char *recdir; | |
1005 | int len, status; | |
1006 | ||
3dd98a3b JL |
1007 | if (size > 0) { |
1008 | if (nfsd_serv) | |
1009 | return -EBUSY; | |
1010 | if (size > PATH_MAX || buf[size-1] != '\n') | |
1011 | return -EINVAL; | |
1012 | buf[size-1] = 0; | |
0964a3d3 | 1013 | |
3dd98a3b JL |
1014 | recdir = mesg; |
1015 | len = qword_get(&mesg, recdir, size); | |
1016 | if (len <= 0) | |
1017 | return -EINVAL; | |
0964a3d3 | 1018 | |
3dd98a3b | 1019 | status = nfs4_reset_recoverydir(recdir); |
69049961 AK |
1020 | if (status) |
1021 | return status; | |
3dd98a3b | 1022 | } |
3d72ab8f CL |
1023 | |
1024 | return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s\n", | |
1025 | nfs4_recoverydir()); | |
0964a3d3 | 1026 | } |
3dd98a3b | 1027 | |
262a0982 CL |
1028 | /** |
1029 | * write_recoverydir - Set or report the pathname of the recovery directory | |
1030 | * | |
1031 | * Input: | |
1032 | * buf: ignored | |
1033 | * size: zero | |
1034 | * | |
1035 | * OR | |
1036 | * | |
1037 | * Input: | |
1038 | * buf: C string containing the pathname | |
1039 | * of the directory on a local file | |
1040 | * system containing permanent NFSv4 | |
1041 | * recovery data | |
1042 | * size: non-zero length of C string in @buf | |
1043 | * Output: | |
1044 | * On success: passed-in buffer filled with '\n'-terminated C string | |
1045 | * containing the current recovery pathname setting; | |
1046 | * return code is the size in bytes of the string | |
1047 | * On error: return code is zero or a negative errno value | |
1048 | */ | |
3dd98a3b JL |
1049 | static ssize_t write_recoverydir(struct file *file, char *buf, size_t size) |
1050 | { | |
1051 | ssize_t rv; | |
1052 | ||
1053 | mutex_lock(&nfsd_mutex); | |
1054 | rv = __write_recoverydir(file, buf, size); | |
1055 | mutex_unlock(&nfsd_mutex); | |
1056 | return rv; | |
1057 | } | |
1058 | ||
70c3b76c | 1059 | #endif |
0964a3d3 | 1060 | |
1da177e4 LT |
1061 | /*----------------------------------------------------------------------------*/ |
1062 | /* | |
1063 | * populating the filesystem. | |
1064 | */ | |
1065 | ||
1066 | static int nfsd_fill_super(struct super_block * sb, void * data, int silent) | |
1067 | { | |
1068 | static struct tree_descr nfsd_files[] = { | |
1da177e4 | 1069 | [NFSD_List] = {"exports", &exports_operations, S_IRUGO}, |
e8e8753f BF |
1070 | [NFSD_Export_features] = {"export_features", |
1071 | &export_features_operations, S_IRUGO}, | |
4373ea84 WC |
1072 | [NFSD_FO_UnlockIP] = {"unlock_ip", |
1073 | &transaction_ops, S_IWUSR|S_IRUSR}, | |
17efa372 WC |
1074 | [NFSD_FO_UnlockFS] = {"unlock_filesystem", |
1075 | &transaction_ops, S_IWUSR|S_IRUSR}, | |
1da177e4 LT |
1076 | [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR}, |
1077 | [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR}, | |
eed2965a | 1078 | [NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR}, |
03cf6c9f | 1079 | [NFSD_Pool_Stats] = {"pool_stats", &pool_stats_operations, S_IRUGO}, |
70c3b76c | 1080 | [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR}, |
80212d59 | 1081 | [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO}, |
596bbe53 | 1082 | [NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO}, |
b084f598 | 1083 | #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE) |
b0b0c0a2 | 1084 | [NFSD_SupportedEnctypes] = {"supported_krb5_enctypes", &supported_enctypes_ops, S_IRUGO}, |
b084f598 | 1085 | #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */ |
1da177e4 LT |
1086 | #ifdef CONFIG_NFSD_V4 |
1087 | [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR}, | |
efc4bb4f | 1088 | [NFSD_Gracetime] = {"nfsv4gracetime", &transaction_ops, S_IWUSR|S_IRUSR}, |
0964a3d3 | 1089 | [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR}, |
1da177e4 LT |
1090 | #endif |
1091 | /* last one */ {""} | |
1092 | }; | |
1093 | return simple_fill_super(sb, 0x6e667364, nfsd_files); | |
1094 | } | |
1095 | ||
fc14f2fe AV |
1096 | static struct dentry *nfsd_mount(struct file_system_type *fs_type, |
1097 | int flags, const char *dev_name, void *data) | |
1da177e4 | 1098 | { |
fc14f2fe | 1099 | return mount_single(fs_type, flags, data, nfsd_fill_super); |
1da177e4 LT |
1100 | } |
1101 | ||
1102 | static struct file_system_type nfsd_fs_type = { | |
1103 | .owner = THIS_MODULE, | |
1104 | .name = "nfsd", | |
fc14f2fe | 1105 | .mount = nfsd_mount, |
1da177e4 LT |
1106 | .kill_sb = kill_litter_super, |
1107 | }; | |
1108 | ||
e331f606 BF |
1109 | #ifdef CONFIG_PROC_FS |
1110 | static int create_proc_exports_entry(void) | |
1111 | { | |
1112 | struct proc_dir_entry *entry; | |
1113 | ||
1114 | entry = proc_mkdir("fs/nfs", NULL); | |
1115 | if (!entry) | |
1116 | return -ENOMEM; | |
9ef2db26 | 1117 | entry = proc_create("exports", 0, entry, &exports_operations); |
e331f606 BF |
1118 | if (!entry) |
1119 | return -ENOMEM; | |
e331f606 BF |
1120 | return 0; |
1121 | } | |
1122 | #else /* CONFIG_PROC_FS */ | |
1123 | static int create_proc_exports_entry(void) | |
1124 | { | |
1125 | return 0; | |
1126 | } | |
1127 | #endif | |
1128 | ||
7ea34ac1 JL |
1129 | int nfsd_net_id; |
1130 | static struct pernet_operations nfsd_net_ops = { | |
1131 | .id = &nfsd_net_id, | |
1132 | .size = sizeof(struct nfsd_net), | |
1133 | }; | |
1134 | ||
1da177e4 LT |
1135 | static int __init init_nfsd(void) |
1136 | { | |
1137 | int retval; | |
1138 | printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n"); | |
1139 | ||
813fd320 JL |
1140 | retval = rpc_pipefs_notifier_register(&nfsd4_cld_block); |
1141 | if (retval) | |
1142 | return retval; | |
7ea34ac1 JL |
1143 | retval = register_pernet_subsys(&nfsd_net_ops); |
1144 | if (retval < 0) | |
813fd320 | 1145 | goto out_unregister_notifier; |
72083396 | 1146 | retval = nfsd4_init_slabs(); |
e8ff2a84 | 1147 | if (retval) |
7ea34ac1 | 1148 | goto out_unregister_pernet; |
72083396 | 1149 | nfs4_state_init(); |
65178db4 BS |
1150 | retval = nfsd_fault_inject_init(); /* nfsd fault injection controls */ |
1151 | if (retval) | |
1152 | goto out_free_slabs; | |
1da177e4 | 1153 | nfsd_stat_init(); /* Statistics */ |
d5c3428b BF |
1154 | retval = nfsd_reply_cache_init(); |
1155 | if (retval) | |
1156 | goto out_free_stat; | |
dbf847ec BF |
1157 | retval = nfsd_export_init(); |
1158 | if (retval) | |
1159 | goto out_free_cache; | |
1da177e4 | 1160 | nfsd_lockd_init(); /* lockd->nfsd callbacks */ |
dbf847ec BF |
1161 | retval = nfsd_idmap_init(); |
1162 | if (retval) | |
1163 | goto out_free_lockd; | |
e331f606 BF |
1164 | retval = create_proc_exports_entry(); |
1165 | if (retval) | |
1166 | goto out_free_idmap; | |
1da177e4 | 1167 | retval = register_filesystem(&nfsd_fs_type); |
26808d3f BF |
1168 | if (retval) |
1169 | goto out_free_all; | |
1170 | return 0; | |
1171 | out_free_all: | |
26808d3f BF |
1172 | remove_proc_entry("fs/nfs/exports", NULL); |
1173 | remove_proc_entry("fs/nfs", NULL); | |
e331f606 | 1174 | out_free_idmap: |
dbf847ec BF |
1175 | nfsd_idmap_shutdown(); |
1176 | out_free_lockd: | |
26808d3f | 1177 | nfsd_lockd_shutdown(); |
e331f606 | 1178 | nfsd_export_shutdown(); |
dbf847ec | 1179 | out_free_cache: |
e331f606 | 1180 | nfsd_reply_cache_shutdown(); |
d5c3428b BF |
1181 | out_free_stat: |
1182 | nfsd_stat_shutdown(); | |
65178db4 BS |
1183 | nfsd_fault_inject_cleanup(); |
1184 | out_free_slabs: | |
26808d3f | 1185 | nfsd4_free_slabs(); |
7ea34ac1 JL |
1186 | out_unregister_pernet: |
1187 | unregister_pernet_subsys(&nfsd_net_ops); | |
813fd320 JL |
1188 | out_unregister_notifier: |
1189 | rpc_pipefs_notifier_unregister(&nfsd4_cld_block); | |
1da177e4 LT |
1190 | return retval; |
1191 | } | |
1192 | ||
1193 | static void __exit exit_nfsd(void) | |
1194 | { | |
1195 | nfsd_export_shutdown(); | |
d5c3428b | 1196 | nfsd_reply_cache_shutdown(); |
1da177e4 LT |
1197 | remove_proc_entry("fs/nfs/exports", NULL); |
1198 | remove_proc_entry("fs/nfs", NULL); | |
1199 | nfsd_stat_shutdown(); | |
1200 | nfsd_lockd_shutdown(); | |
1da177e4 | 1201 | nfsd_idmap_shutdown(); |
e8ff2a84 | 1202 | nfsd4_free_slabs(); |
65178db4 | 1203 | nfsd_fault_inject_cleanup(); |
1da177e4 | 1204 | unregister_filesystem(&nfsd_fs_type); |
7ea34ac1 | 1205 | unregister_pernet_subsys(&nfsd_net_ops); |
813fd320 | 1206 | rpc_pipefs_notifier_unregister(&nfsd4_cld_block); |
1da177e4 LT |
1207 | } |
1208 | ||
1209 | MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>"); | |
1210 | MODULE_LICENSE("GPL"); | |
1211 | module_init(init_nfsd) | |
1212 | module_exit(exit_nfsd) |