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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> |
5976687a | 13 | #include <linux/sunrpc/addr.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 | { | |
496ad9aa | 88 | ino_t ino = file_inode(file)->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 | ||
96d851c4 | 128 | static int exports_net_open(struct net *net, struct file *file) |
1da177e4 | 129 | { |
f2c7ea10 SK |
130 | int err; |
131 | struct seq_file *seq; | |
96d851c4 | 132 | struct nfsd_net *nn = net_generic(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 | ||
96d851c4 SK |
143 | static int exports_proc_open(struct inode *inode, struct file *file) |
144 | { | |
145 | return exports_net_open(current->nsproxy->net_ns, file); | |
146 | } | |
147 | ||
148 | static const struct file_operations exports_proc_operations = { | |
149 | .open = exports_proc_open, | |
150 | .read = seq_read, | |
151 | .llseek = seq_lseek, | |
152 | .release = seq_release, | |
153 | .owner = THIS_MODULE, | |
154 | }; | |
155 | ||
156 | static int exports_nfsd_open(struct inode *inode, struct file *file) | |
157 | { | |
158 | return exports_net_open(inode->i_sb->s_fs_info, file); | |
159 | } | |
160 | ||
161 | static const struct file_operations exports_nfsd_operations = { | |
162 | .open = exports_nfsd_open, | |
1da177e4 LT |
163 | .read = seq_read, |
164 | .llseek = seq_lseek, | |
165 | .release = seq_release, | |
9ef2db26 | 166 | .owner = THIS_MODULE, |
1da177e4 LT |
167 | }; |
168 | ||
e8e8753f BF |
169 | static int export_features_show(struct seq_file *m, void *v) |
170 | { | |
171 | seq_printf(m, "0x%x 0x%x\n", NFSEXP_ALLFLAGS, NFSEXP_SECINFO_FLAGS); | |
172 | return 0; | |
173 | } | |
174 | ||
175 | static int export_features_open(struct inode *inode, struct file *file) | |
176 | { | |
177 | return single_open(file, export_features_show, NULL); | |
178 | } | |
179 | ||
180 | static struct file_operations export_features_operations = { | |
181 | .open = export_features_open, | |
182 | .read = seq_read, | |
183 | .llseek = seq_lseek, | |
184 | .release = single_release, | |
185 | }; | |
186 | ||
b084f598 | 187 | #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE) |
b0b0c0a2 KC |
188 | static int supported_enctypes_show(struct seq_file *m, void *v) |
189 | { | |
b084f598 | 190 | seq_printf(m, KRB5_SUPPORTED_ENCTYPES); |
b0b0c0a2 KC |
191 | return 0; |
192 | } | |
193 | ||
194 | static int supported_enctypes_open(struct inode *inode, struct file *file) | |
195 | { | |
196 | return single_open(file, supported_enctypes_show, NULL); | |
197 | } | |
198 | ||
199 | static struct file_operations supported_enctypes_ops = { | |
200 | .open = supported_enctypes_open, | |
201 | .read = seq_read, | |
202 | .llseek = seq_lseek, | |
203 | .release = single_release, | |
204 | }; | |
b084f598 | 205 | #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */ |
b0b0c0a2 | 206 | |
828c0950 | 207 | static const struct file_operations pool_stats_operations = { |
03cf6c9f GB |
208 | .open = nfsd_pool_stats_open, |
209 | .read = seq_read, | |
210 | .llseek = seq_lseek, | |
ed2d8aed | 211 | .release = nfsd_pool_stats_release, |
03cf6c9f GB |
212 | .owner = THIS_MODULE, |
213 | }; | |
214 | ||
1da177e4 LT |
215 | /*----------------------------------------------------------------------------*/ |
216 | /* | |
217 | * payload - write methods | |
1da177e4 LT |
218 | */ |
219 | ||
1da177e4 | 220 | |
262a0982 CL |
221 | /** |
222 | * write_unlock_ip - Release all locks used by a client | |
223 | * | |
224 | * Experimental. | |
225 | * | |
226 | * Input: | |
227 | * buf: '\n'-terminated C string containing a | |
4116092b | 228 | * presentation format IP address |
262a0982 CL |
229 | * size: length of C string in @buf |
230 | * Output: | |
231 | * On success: returns zero if all specified locks were released; | |
232 | * returns one if one or more locks were not released | |
233 | * On error: return code is negative errno value | |
262a0982 | 234 | */ |
b046ccdc | 235 | static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size) |
4373ea84 | 236 | { |
4116092b CL |
237 | struct sockaddr_storage address; |
238 | struct sockaddr *sap = (struct sockaddr *)&address; | |
239 | size_t salen = sizeof(address); | |
367c8c7b | 240 | char *fo_path; |
11f77942 | 241 | struct net *net = file->f_dentry->d_sb->s_fs_info; |
4373ea84 WC |
242 | |
243 | /* sanity check */ | |
244 | if (size == 0) | |
245 | return -EINVAL; | |
246 | ||
247 | if (buf[size-1] != '\n') | |
248 | return -EINVAL; | |
249 | ||
250 | fo_path = buf; | |
251 | if (qword_get(&buf, fo_path, size) < 0) | |
252 | return -EINVAL; | |
253 | ||
11f77942 | 254 | if (rpc_pton(net, fo_path, size, sap, salen) == 0) |
4373ea84 | 255 | return -EINVAL; |
4373ea84 | 256 | |
4116092b | 257 | return nlmsvc_unlock_all_by_ip(sap); |
4373ea84 WC |
258 | } |
259 | ||
262a0982 CL |
260 | /** |
261 | * write_unlock_fs - Release all locks on a local file system | |
262 | * | |
263 | * Experimental. | |
264 | * | |
265 | * Input: | |
266 | * buf: '\n'-terminated C string containing the | |
267 | * absolute pathname of a local file system | |
268 | * size: length of C string in @buf | |
269 | * Output: | |
270 | * On success: returns zero if all specified locks were released; | |
271 | * returns one if one or more locks were not released | |
272 | * On error: return code is negative errno value | |
273 | */ | |
b046ccdc | 274 | static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size) |
17efa372 | 275 | { |
a63bb996 | 276 | struct path path; |
17efa372 WC |
277 | char *fo_path; |
278 | int error; | |
279 | ||
280 | /* sanity check */ | |
281 | if (size == 0) | |
282 | return -EINVAL; | |
283 | ||
284 | if (buf[size-1] != '\n') | |
285 | return -EINVAL; | |
286 | ||
287 | fo_path = buf; | |
288 | if (qword_get(&buf, fo_path, size) < 0) | |
289 | return -EINVAL; | |
290 | ||
a63bb996 | 291 | error = kern_path(fo_path, 0, &path); |
17efa372 WC |
292 | if (error) |
293 | return error; | |
294 | ||
262a0982 CL |
295 | /* |
296 | * XXX: Needs better sanity checking. Otherwise we could end up | |
297 | * releasing locks on the wrong file system. | |
298 | * | |
299 | * For example: | |
300 | * 1. Does the path refer to a directory? | |
301 | * 2. Is that directory a mount point, or | |
302 | * 3. Is that directory the root of an exported file system? | |
303 | */ | |
d8c9584e | 304 | error = nlmsvc_unlock_all_by_sb(path.dentry->d_sb); |
17efa372 | 305 | |
a63bb996 | 306 | path_put(&path); |
17efa372 WC |
307 | return error; |
308 | } | |
309 | ||
262a0982 CL |
310 | /** |
311 | * write_filehandle - Get a variable-length NFS file handle by path | |
312 | * | |
313 | * On input, the buffer contains a '\n'-terminated C string comprised of | |
314 | * three alphanumeric words separated by whitespace. The string may | |
315 | * contain escape sequences. | |
316 | * | |
317 | * Input: | |
318 | * buf: | |
319 | * domain: client domain name | |
320 | * path: export pathname | |
321 | * maxsize: numeric maximum size of | |
322 | * @buf | |
323 | * size: length of C string in @buf | |
324 | * Output: | |
325 | * On success: passed-in buffer filled with '\n'-terminated C | |
326 | * string containing a ASCII hex text version | |
327 | * of the NFS file handle; | |
328 | * return code is the size in bytes of the string | |
329 | * On error: return code is negative errno value | |
330 | */ | |
1da177e4 LT |
331 | static ssize_t write_filehandle(struct file *file, char *buf, size_t size) |
332 | { | |
1da177e4 | 333 | char *dname, *path; |
246d95ba | 334 | int uninitialized_var(maxsize); |
1da177e4 LT |
335 | char *mesg = buf; |
336 | int len; | |
337 | struct auth_domain *dom; | |
338 | struct knfsd_fh fh; | |
11f77942 | 339 | struct net *net = file->f_dentry->d_sb->s_fs_info; |
1da177e4 | 340 | |
87d26ea7 BF |
341 | if (size == 0) |
342 | return -EINVAL; | |
343 | ||
1da177e4 LT |
344 | if (buf[size-1] != '\n') |
345 | return -EINVAL; | |
346 | buf[size-1] = 0; | |
347 | ||
348 | dname = mesg; | |
349 | len = qword_get(&mesg, dname, size); | |
54224f04 CL |
350 | if (len <= 0) |
351 | return -EINVAL; | |
1da177e4 LT |
352 | |
353 | path = dname+len+1; | |
354 | len = qword_get(&mesg, path, size); | |
54224f04 CL |
355 | if (len <= 0) |
356 | return -EINVAL; | |
1da177e4 LT |
357 | |
358 | len = get_int(&mesg, &maxsize); | |
359 | if (len) | |
360 | return len; | |
361 | ||
362 | if (maxsize < NFS_FHSIZE) | |
363 | return -EINVAL; | |
364 | if (maxsize > NFS3_FHSIZE) | |
365 | maxsize = NFS3_FHSIZE; | |
366 | ||
367 | if (qword_get(&mesg, mesg, size)>0) | |
368 | return -EINVAL; | |
369 | ||
370 | /* we have all the words, they are in buf.. */ | |
371 | dom = unix_domain_find(dname); | |
372 | if (!dom) | |
373 | return -ENOMEM; | |
374 | ||
11f77942 | 375 | len = exp_rootfh(net, dom, path, &fh, maxsize); |
1da177e4 LT |
376 | auth_domain_put(dom); |
377 | if (len) | |
378 | return len; | |
379 | ||
54224f04 CL |
380 | mesg = buf; |
381 | len = SIMPLE_TRANSACTION_LIMIT; | |
1da177e4 LT |
382 | qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size); |
383 | mesg[-1] = '\n'; | |
384 | return mesg - buf; | |
385 | } | |
386 | ||
262a0982 CL |
387 | /** |
388 | * write_threads - Start NFSD, or report the current number of running threads | |
389 | * | |
390 | * Input: | |
391 | * buf: ignored | |
392 | * size: zero | |
393 | * Output: | |
394 | * On success: passed-in buffer filled with '\n'-terminated C | |
395 | * string numeric value representing the number of | |
396 | * running NFSD threads; | |
397 | * return code is the size in bytes of the string | |
398 | * On error: return code is zero | |
399 | * | |
400 | * OR | |
401 | * | |
402 | * Input: | |
403 | * buf: C string containing an unsigned | |
404 | * integer value representing the | |
405 | * number of NFSD threads to start | |
406 | * size: non-zero length of C string in @buf | |
407 | * Output: | |
408 | * On success: NFS service is started; | |
409 | * passed-in buffer filled with '\n'-terminated C | |
410 | * string numeric value representing the number of | |
411 | * running NFSD threads; | |
412 | * return code is the size in bytes of the string | |
413 | * On error: return code is zero or a negative errno value | |
414 | */ | |
1da177e4 LT |
415 | static ssize_t write_threads(struct file *file, char *buf, size_t size) |
416 | { | |
1da177e4 LT |
417 | char *mesg = buf; |
418 | int rv; | |
11f77942 | 419 | struct net *net = file->f_dentry->d_sb->s_fs_info; |
d41a9417 | 420 | |
1da177e4 LT |
421 | if (size > 0) { |
422 | int newthreads; | |
423 | rv = get_int(&mesg, &newthreads); | |
424 | if (rv) | |
425 | return rv; | |
9e074856 | 426 | if (newthreads < 0) |
1da177e4 | 427 | return -EINVAL; |
d41a9417 | 428 | rv = nfsd_svc(newthreads, net); |
82e12fe9 | 429 | if (rv < 0) |
1da177e4 | 430 | return rv; |
82e12fe9 | 431 | } else |
9dd9845f | 432 | rv = nfsd_nrthreads(net); |
e06b6405 | 433 | |
82e12fe9 | 434 | return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", rv); |
1da177e4 LT |
435 | } |
436 | ||
262a0982 CL |
437 | /** |
438 | * write_pool_threads - Set or report the current number of threads per pool | |
439 | * | |
440 | * Input: | |
441 | * buf: ignored | |
442 | * size: zero | |
443 | * | |
444 | * OR | |
445 | * | |
446 | * Input: | |
447 | * buf: C string containing whitespace- | |
448 | * separated unsigned integer values | |
449 | * representing the number of NFSD | |
450 | * threads to start in each pool | |
451 | * size: non-zero length of C string in @buf | |
452 | * Output: | |
453 | * On success: passed-in buffer filled with '\n'-terminated C | |
454 | * string containing integer values representing the | |
455 | * number of NFSD threads in each pool; | |
456 | * return code is the size in bytes of the string | |
457 | * On error: return code is zero or a negative errno value | |
458 | */ | |
eed2965a GB |
459 | static ssize_t write_pool_threads(struct file *file, char *buf, size_t size) |
460 | { | |
461 | /* if size > 0, look for an array of number of threads per node | |
462 | * and apply them then write out number of threads per node as reply | |
463 | */ | |
464 | char *mesg = buf; | |
465 | int i; | |
466 | int rv; | |
467 | int len; | |
bedbdd8b | 468 | int npools; |
eed2965a | 469 | int *nthreads; |
11f77942 | 470 | struct net *net = file->f_dentry->d_sb->s_fs_info; |
eed2965a | 471 | |
bedbdd8b | 472 | mutex_lock(&nfsd_mutex); |
9dd9845f | 473 | npools = nfsd_nrpools(net); |
eed2965a GB |
474 | if (npools == 0) { |
475 | /* | |
476 | * NFS is shut down. The admin can start it by | |
477 | * writing to the threads file but NOT the pool_threads | |
478 | * file, sorry. Report zero threads. | |
479 | */ | |
bedbdd8b | 480 | mutex_unlock(&nfsd_mutex); |
eed2965a GB |
481 | strcpy(buf, "0\n"); |
482 | return strlen(buf); | |
483 | } | |
484 | ||
485 | nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL); | |
bedbdd8b | 486 | rv = -ENOMEM; |
eed2965a | 487 | if (nthreads == NULL) |
bedbdd8b | 488 | goto out_free; |
eed2965a GB |
489 | |
490 | if (size > 0) { | |
491 | for (i = 0; i < npools; i++) { | |
492 | rv = get_int(&mesg, &nthreads[i]); | |
493 | if (rv == -ENOENT) | |
494 | break; /* fewer numbers than pools */ | |
495 | if (rv) | |
496 | goto out_free; /* syntax error */ | |
497 | rv = -EINVAL; | |
498 | if (nthreads[i] < 0) | |
499 | goto out_free; | |
500 | } | |
3938a0d5 | 501 | rv = nfsd_set_nrthreads(i, nthreads, net); |
eed2965a GB |
502 | if (rv) |
503 | goto out_free; | |
504 | } | |
505 | ||
9dd9845f | 506 | rv = nfsd_get_nrthreads(npools, nthreads, net); |
eed2965a GB |
507 | if (rv) |
508 | goto out_free; | |
509 | ||
510 | mesg = buf; | |
511 | size = SIMPLE_TRANSACTION_LIMIT; | |
512 | for (i = 0; i < npools && size > 0; i++) { | |
513 | snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? '\n' : ' ')); | |
514 | len = strlen(mesg); | |
515 | size -= len; | |
516 | mesg += len; | |
517 | } | |
413d63d7 | 518 | rv = mesg - buf; |
eed2965a GB |
519 | out_free: |
520 | kfree(nthreads); | |
bedbdd8b | 521 | mutex_unlock(&nfsd_mutex); |
eed2965a GB |
522 | return rv; |
523 | } | |
524 | ||
3dd98a3b | 525 | static ssize_t __write_versions(struct file *file, char *buf, size_t size) |
70c3b76c | 526 | { |
70c3b76c | 527 | char *mesg = buf; |
8daf220a | 528 | char *vers, *minorp, sign; |
261758b5 | 529 | int len, num, remaining; |
8daf220a | 530 | unsigned minor; |
70c3b76c N |
531 | ssize_t tlen = 0; |
532 | char *sep; | |
11f77942 | 533 | struct net *net = file->f_dentry->d_sb->s_fs_info; |
9dd9845f | 534 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
70c3b76c N |
535 | |
536 | if (size>0) { | |
9dd9845f | 537 | if (nn->nfsd_serv) |
6658d3a7 | 538 | /* Cannot change versions without updating |
9dd9845f | 539 | * nn->nfsd_serv->sv_xdrsize, and reallocing |
6658d3a7 N |
540 | * rq_argp and rq_resp |
541 | */ | |
70c3b76c N |
542 | return -EBUSY; |
543 | if (buf[size-1] != '\n') | |
544 | return -EINVAL; | |
545 | buf[size-1] = 0; | |
546 | ||
547 | vers = mesg; | |
548 | len = qword_get(&mesg, vers, size); | |
549 | if (len <= 0) return -EINVAL; | |
550 | do { | |
551 | sign = *vers; | |
552 | if (sign == '+' || sign == '-') | |
8daf220a | 553 | num = simple_strtol((vers+1), &minorp, 0); |
70c3b76c | 554 | else |
8daf220a BH |
555 | num = simple_strtol(vers, &minorp, 0); |
556 | if (*minorp == '.') { | |
ff89be87 | 557 | if (num != 4) |
8daf220a BH |
558 | return -EINVAL; |
559 | minor = simple_strtoul(minorp+1, NULL, 0); | |
560 | if (minor == 0) | |
561 | return -EINVAL; | |
562 | if (nfsd_minorversion(minor, sign == '-' ? | |
563 | NFSD_CLEAR : NFSD_SET) < 0) | |
564 | return -EINVAL; | |
565 | goto next; | |
566 | } | |
70c3b76c N |
567 | switch(num) { |
568 | case 2: | |
569 | case 3: | |
570 | case 4: | |
6658d3a7 | 571 | nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET); |
70c3b76c N |
572 | break; |
573 | default: | |
574 | return -EINVAL; | |
575 | } | |
8daf220a | 576 | next: |
70c3b76c | 577 | vers += len + 1; |
70c3b76c N |
578 | } while ((len = qword_get(&mesg, vers, size)) > 0); |
579 | /* If all get turned off, turn them back on, as | |
580 | * having no versions is BAD | |
581 | */ | |
6658d3a7 | 582 | nfsd_reset_versions(); |
70c3b76c | 583 | } |
261758b5 | 584 | |
70c3b76c N |
585 | /* Now write current state into reply buffer */ |
586 | len = 0; | |
587 | sep = ""; | |
261758b5 | 588 | remaining = SIMPLE_TRANSACTION_LIMIT; |
70c3b76c | 589 | for (num=2 ; num <= 4 ; num++) |
6658d3a7 | 590 | if (nfsd_vers(num, NFSD_AVAIL)) { |
261758b5 | 591 | len = snprintf(buf, remaining, "%s%c%d", sep, |
6658d3a7 | 592 | nfsd_vers(num, NFSD_TEST)?'+':'-', |
70c3b76c N |
593 | num); |
594 | sep = " "; | |
261758b5 CL |
595 | |
596 | if (len > remaining) | |
597 | break; | |
598 | remaining -= len; | |
599 | buf += len; | |
600 | tlen += len; | |
70c3b76c | 601 | } |
8daf220a | 602 | if (nfsd_vers(4, NFSD_AVAIL)) |
261758b5 CL |
603 | for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION; |
604 | minor++) { | |
605 | len = snprintf(buf, remaining, " %c4.%u", | |
8daf220a BH |
606 | (nfsd_vers(4, NFSD_TEST) && |
607 | nfsd_minorversion(minor, NFSD_TEST)) ? | |
608 | '+' : '-', | |
609 | minor); | |
261758b5 CL |
610 | |
611 | if (len > remaining) | |
612 | break; | |
613 | remaining -= len; | |
614 | buf += len; | |
615 | tlen += len; | |
616 | } | |
617 | ||
618 | len = snprintf(buf, remaining, "\n"); | |
619 | if (len > remaining) | |
620 | return -EINVAL; | |
621 | return tlen + len; | |
70c3b76c N |
622 | } |
623 | ||
262a0982 CL |
624 | /** |
625 | * write_versions - Set or report the available NFS protocol versions | |
626 | * | |
627 | * Input: | |
628 | * buf: ignored | |
629 | * size: zero | |
630 | * Output: | |
631 | * On success: passed-in buffer filled with '\n'-terminated C | |
632 | * string containing positive or negative integer | |
633 | * values representing the current status of each | |
634 | * protocol version; | |
635 | * return code is the size in bytes of the string | |
636 | * On error: return code is zero or a negative errno value | |
637 | * | |
638 | * OR | |
639 | * | |
640 | * Input: | |
641 | * buf: C string containing whitespace- | |
642 | * separated positive or negative | |
643 | * integer values representing NFS | |
644 | * protocol versions to enable ("+n") | |
645 | * or disable ("-n") | |
646 | * size: non-zero length of C string in @buf | |
647 | * Output: | |
648 | * On success: status of zero or more protocol versions has | |
649 | * been updated; passed-in buffer filled with | |
650 | * '\n'-terminated C string containing positive | |
651 | * or negative integer values representing the | |
652 | * current status of each protocol version; | |
653 | * return code is the size in bytes of the string | |
654 | * On error: return code is zero or a negative errno value | |
655 | */ | |
3dd98a3b JL |
656 | static ssize_t write_versions(struct file *file, char *buf, size_t size) |
657 | { | |
658 | ssize_t rv; | |
659 | ||
660 | mutex_lock(&nfsd_mutex); | |
661 | rv = __write_versions(file, buf, size); | |
662 | mutex_unlock(&nfsd_mutex); | |
663 | return rv; | |
664 | } | |
665 | ||
0a5372d8 CL |
666 | /* |
667 | * Zero-length write. Return a list of NFSD's current listener | |
668 | * transports. | |
669 | */ | |
9dd9845f | 670 | static ssize_t __write_ports_names(char *buf, struct net *net) |
0a5372d8 | 671 | { |
9dd9845f SK |
672 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
673 | ||
674 | if (nn->nfsd_serv == NULL) | |
0a5372d8 | 675 | return 0; |
9dd9845f | 676 | return svc_xprt_names(nn->nfsd_serv, buf, SIMPLE_TRANSACTION_LIMIT); |
0a5372d8 CL |
677 | } |
678 | ||
0b7c2f6f CL |
679 | /* |
680 | * A single 'fd' number was written, in which case it must be for | |
681 | * a socket of a supported family/protocol, and we use it as an | |
682 | * nfsd listener. | |
683 | */ | |
08160352 | 684 | static ssize_t __write_ports_addfd(char *buf, struct net *net) |
0b7c2f6f CL |
685 | { |
686 | char *mesg = buf; | |
687 | int fd, err; | |
9dd9845f | 688 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
0b7c2f6f CL |
689 | |
690 | err = get_int(&mesg, &fd); | |
691 | if (err != 0 || fd < 0) | |
692 | return -EINVAL; | |
693 | ||
6777436b | 694 | err = nfsd_create_serv(net); |
0b7c2f6f CL |
695 | if (err != 0) |
696 | return err; | |
697 | ||
9dd9845f | 698 | err = svc_addsock(nn->nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT); |
78a8d7c8 | 699 | if (err < 0) { |
19f7e2ca | 700 | nfsd_destroy(net); |
78a8d7c8 JL |
701 | return err; |
702 | } | |
0b7c2f6f | 703 | |
ea068bad | 704 | /* Decrease the count, but don't shut down the service */ |
9dd9845f | 705 | nn->nfsd_serv->sv_nrthreads--; |
ea068bad | 706 | return err; |
0b7c2f6f CL |
707 | } |
708 | ||
4eb68c26 CL |
709 | /* |
710 | * A transport listener is added by writing it's transport name and | |
711 | * a port number. | |
712 | */ | |
08160352 | 713 | static ssize_t __write_ports_addxprt(char *buf, struct net *net) |
4eb68c26 CL |
714 | { |
715 | char transport[16]; | |
37498292 | 716 | struct svc_xprt *xprt; |
4eb68c26 | 717 | int port, err; |
9dd9845f | 718 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
4eb68c26 | 719 | |
a10fded1 | 720 | if (sscanf(buf, "%15s %5u", transport, &port) != 2) |
4eb68c26 CL |
721 | return -EINVAL; |
722 | ||
4be929be | 723 | if (port < 1 || port > USHRT_MAX) |
4eb68c26 CL |
724 | return -EINVAL; |
725 | ||
6777436b | 726 | err = nfsd_create_serv(net); |
4eb68c26 CL |
727 | if (err != 0) |
728 | return err; | |
729 | ||
9dd9845f | 730 | err = svc_create_xprt(nn->nfsd_serv, transport, net, |
4eb68c26 | 731 | PF_INET, port, SVC_SOCK_ANONYMOUS); |
68717908 | 732 | if (err < 0) |
37498292 CL |
733 | goto out_err; |
734 | ||
9dd9845f | 735 | err = svc_create_xprt(nn->nfsd_serv, transport, net, |
37498292 CL |
736 | PF_INET6, port, SVC_SOCK_ANONYMOUS); |
737 | if (err < 0 && err != -EAFNOSUPPORT) | |
738 | goto out_close; | |
0cd14a06 JL |
739 | |
740 | /* Decrease the count, but don't shut down the service */ | |
9dd9845f | 741 | nn->nfsd_serv->sv_nrthreads--; |
4eb68c26 | 742 | return 0; |
37498292 | 743 | out_close: |
9dd9845f | 744 | xprt = svc_find_xprt(nn->nfsd_serv, transport, net, PF_INET, port); |
37498292 CL |
745 | if (xprt != NULL) { |
746 | svc_close_xprt(xprt); | |
747 | svc_xprt_put(xprt); | |
748 | } | |
749 | out_err: | |
19f7e2ca | 750 | nfsd_destroy(net); |
37498292 | 751 | return err; |
4eb68c26 CL |
752 | } |
753 | ||
08160352 SK |
754 | static ssize_t __write_ports(struct file *file, char *buf, size_t size, |
755 | struct net *net) | |
80212d59 | 756 | { |
0a5372d8 | 757 | if (size == 0) |
9dd9845f | 758 | return __write_ports_names(buf, net); |
0b7c2f6f CL |
759 | |
760 | if (isdigit(buf[0])) | |
08160352 | 761 | return __write_ports_addfd(buf, net); |
82d56591 | 762 | |
4eb68c26 | 763 | if (isalpha(buf[0])) |
08160352 | 764 | return __write_ports_addxprt(buf, net); |
4cd5dc75 | 765 | |
b41b66d6 | 766 | return -EINVAL; |
80212d59 N |
767 | } |
768 | ||
262a0982 CL |
769 | /** |
770 | * write_ports - Pass a socket file descriptor or transport name to listen on | |
771 | * | |
772 | * Input: | |
773 | * buf: ignored | |
774 | * size: zero | |
775 | * Output: | |
776 | * On success: passed-in buffer filled with a '\n'-terminated C | |
777 | * string containing a whitespace-separated list of | |
778 | * named NFSD listeners; | |
779 | * return code is the size in bytes of the string | |
780 | * On error: return code is zero or a negative errno value | |
781 | * | |
782 | * OR | |
783 | * | |
784 | * Input: | |
785 | * buf: C string containing an unsigned | |
786 | * integer value representing a bound | |
787 | * but unconnected socket that is to be | |
c71206a7 CL |
788 | * used as an NFSD listener; listen(3) |
789 | * must be called for a SOCK_STREAM | |
790 | * socket, otherwise it is ignored | |
262a0982 CL |
791 | * size: non-zero length of C string in @buf |
792 | * Output: | |
793 | * On success: NFS service is started; | |
794 | * passed-in buffer filled with a '\n'-terminated C | |
795 | * string containing a unique alphanumeric name of | |
796 | * the listener; | |
797 | * return code is the size in bytes of the string | |
798 | * On error: return code is a negative errno value | |
799 | * | |
800 | * OR | |
801 | * | |
802 | * Input: | |
262a0982 CL |
803 | * buf: C string containing a transport |
804 | * name and an unsigned integer value | |
805 | * representing the port to listen on, | |
806 | * separated by whitespace | |
807 | * size: non-zero length of C string in @buf | |
808 | * Output: | |
809 | * On success: returns zero; NFS service is started | |
810 | * On error: return code is a negative errno value | |
262a0982 | 811 | */ |
bedbdd8b NB |
812 | static ssize_t write_ports(struct file *file, char *buf, size_t size) |
813 | { | |
814 | ssize_t rv; | |
11f77942 | 815 | struct net *net = file->f_dentry->d_sb->s_fs_info; |
3dd98a3b | 816 | |
bedbdd8b | 817 | mutex_lock(&nfsd_mutex); |
08160352 | 818 | rv = __write_ports(file, buf, size, net); |
bedbdd8b NB |
819 | mutex_unlock(&nfsd_mutex); |
820 | return rv; | |
821 | } | |
822 | ||
823 | ||
596bbe53 N |
824 | int nfsd_max_blksize; |
825 | ||
262a0982 CL |
826 | /** |
827 | * write_maxblksize - Set or report the current NFS blksize | |
828 | * | |
829 | * Input: | |
830 | * buf: ignored | |
831 | * size: zero | |
832 | * | |
833 | * OR | |
834 | * | |
835 | * Input: | |
836 | * buf: C string containing an unsigned | |
837 | * integer value representing the new | |
838 | * NFS blksize | |
839 | * size: non-zero length of C string in @buf | |
840 | * Output: | |
841 | * On success: passed-in buffer filled with '\n'-terminated C string | |
842 | * containing numeric value of the current NFS blksize | |
843 | * setting; | |
844 | * return code is the size in bytes of the string | |
845 | * On error: return code is zero or a negative errno value | |
846 | */ | |
596bbe53 N |
847 | static ssize_t write_maxblksize(struct file *file, char *buf, size_t size) |
848 | { | |
849 | char *mesg = buf; | |
11f77942 | 850 | struct net *net = file->f_dentry->d_sb->s_fs_info; |
9dd9845f SK |
851 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
852 | ||
596bbe53 N |
853 | if (size > 0) { |
854 | int bsize; | |
855 | int rv = get_int(&mesg, &bsize); | |
856 | if (rv) | |
857 | return rv; | |
858 | /* force bsize into allowed range and | |
859 | * required alignment. | |
860 | */ | |
861 | if (bsize < 1024) | |
862 | bsize = 1024; | |
863 | if (bsize > NFSSVC_MAXBLKSIZE) | |
864 | bsize = NFSSVC_MAXBLKSIZE; | |
865 | bsize &= ~(1024-1); | |
bedbdd8b | 866 | mutex_lock(&nfsd_mutex); |
9dd9845f | 867 | if (nn->nfsd_serv) { |
bedbdd8b | 868 | mutex_unlock(&nfsd_mutex); |
596bbe53 N |
869 | return -EBUSY; |
870 | } | |
871 | nfsd_max_blksize = bsize; | |
bedbdd8b | 872 | mutex_unlock(&nfsd_mutex); |
596bbe53 | 873 | } |
e06b6405 CL |
874 | |
875 | return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", | |
876 | nfsd_max_blksize); | |
596bbe53 N |
877 | } |
878 | ||
70c3b76c | 879 | #ifdef CONFIG_NFSD_V4 |
9dd9845f SK |
880 | static ssize_t __nfsd4_write_time(struct file *file, char *buf, size_t size, |
881 | time_t *time, struct nfsd_net *nn) | |
1da177e4 | 882 | { |
1da177e4 | 883 | char *mesg = buf; |
f0135740 | 884 | int rv, i; |
1da177e4 LT |
885 | |
886 | if (size > 0) { | |
9dd9845f | 887 | if (nn->nfsd_serv) |
3dd98a3b | 888 | return -EBUSY; |
f0135740 | 889 | rv = get_int(&mesg, &i); |
1da177e4 LT |
890 | if (rv) |
891 | return rv; | |
e7b184f1 BF |
892 | /* |
893 | * Some sanity checking. We don't have a reason for | |
894 | * these particular numbers, but problems with the | |
895 | * extremes are: | |
896 | * - Too short: the briefest network outage may | |
897 | * cause clients to lose all their locks. Also, | |
898 | * the frequent polling may be wasteful. | |
899 | * - Too long: do you really want reboot recovery | |
900 | * to take more than an hour? Or to make other | |
901 | * clients wait an hour before being able to | |
902 | * revoke a dead client's locks? | |
903 | */ | |
f0135740 | 904 | if (i < 10 || i > 3600) |
1da177e4 | 905 | return -EINVAL; |
f0135740 | 906 | *time = i; |
1da177e4 | 907 | } |
e06b6405 | 908 | |
f0135740 BF |
909 | return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%ld\n", *time); |
910 | } | |
911 | ||
9dd9845f SK |
912 | static ssize_t nfsd4_write_time(struct file *file, char *buf, size_t size, |
913 | time_t *time, struct nfsd_net *nn) | |
f0135740 BF |
914 | { |
915 | ssize_t rv; | |
916 | ||
917 | mutex_lock(&nfsd_mutex); | |
9dd9845f | 918 | rv = __nfsd4_write_time(file, buf, size, time, nn); |
f0135740 BF |
919 | mutex_unlock(&nfsd_mutex); |
920 | return rv; | |
1da177e4 LT |
921 | } |
922 | ||
262a0982 CL |
923 | /** |
924 | * write_leasetime - Set or report the current NFSv4 lease time | |
925 | * | |
926 | * Input: | |
927 | * buf: ignored | |
928 | * size: zero | |
929 | * | |
930 | * OR | |
931 | * | |
932 | * Input: | |
933 | * buf: C string containing an unsigned | |
934 | * integer value representing the new | |
935 | * NFSv4 lease expiry time | |
936 | * size: non-zero length of C string in @buf | |
937 | * Output: | |
938 | * On success: passed-in buffer filled with '\n'-terminated C | |
939 | * string containing unsigned integer value of the | |
940 | * current lease expiry time; | |
941 | * return code is the size in bytes of the string | |
942 | * On error: return code is zero or a negative errno value | |
943 | */ | |
3dd98a3b JL |
944 | static ssize_t write_leasetime(struct file *file, char *buf, size_t size) |
945 | { | |
11f77942 SK |
946 | struct net *net = file->f_dentry->d_sb->s_fs_info; |
947 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); | |
9dd9845f | 948 | return nfsd4_write_time(file, buf, size, &nn->nfsd4_lease, nn); |
3dd98a3b JL |
949 | } |
950 | ||
efc4bb4f BF |
951 | /** |
952 | * write_gracetime - Set or report current NFSv4 grace period time | |
953 | * | |
954 | * As above, but sets the time of the NFSv4 grace period. | |
955 | * | |
956 | * Note this should never be set to less than the *previous* | |
957 | * lease-period time, but we don't try to enforce this. (In the common | |
958 | * case (a new boot), we don't know what the previous lease time was | |
959 | * anyway.) | |
960 | */ | |
961 | static ssize_t write_gracetime(struct file *file, char *buf, size_t size) | |
962 | { | |
11f77942 SK |
963 | struct net *net = file->f_dentry->d_sb->s_fs_info; |
964 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); | |
9dd9845f | 965 | return nfsd4_write_time(file, buf, size, &nn->nfsd4_grace, nn); |
efc4bb4f BF |
966 | } |
967 | ||
9dd9845f SK |
968 | static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size, |
969 | struct nfsd_net *nn) | |
0964a3d3 N |
970 | { |
971 | char *mesg = buf; | |
972 | char *recdir; | |
973 | int len, status; | |
974 | ||
3dd98a3b | 975 | if (size > 0) { |
9dd9845f | 976 | if (nn->nfsd_serv) |
3dd98a3b JL |
977 | return -EBUSY; |
978 | if (size > PATH_MAX || buf[size-1] != '\n') | |
979 | return -EINVAL; | |
980 | buf[size-1] = 0; | |
0964a3d3 | 981 | |
3dd98a3b JL |
982 | recdir = mesg; |
983 | len = qword_get(&mesg, recdir, size); | |
984 | if (len <= 0) | |
985 | return -EINVAL; | |
0964a3d3 | 986 | |
3dd98a3b | 987 | status = nfs4_reset_recoverydir(recdir); |
69049961 AK |
988 | if (status) |
989 | return status; | |
3dd98a3b | 990 | } |
3d72ab8f CL |
991 | |
992 | return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s\n", | |
993 | nfs4_recoverydir()); | |
0964a3d3 | 994 | } |
3dd98a3b | 995 | |
262a0982 CL |
996 | /** |
997 | * write_recoverydir - Set or report the pathname of the recovery directory | |
998 | * | |
999 | * Input: | |
1000 | * buf: ignored | |
1001 | * size: zero | |
1002 | * | |
1003 | * OR | |
1004 | * | |
1005 | * Input: | |
1006 | * buf: C string containing the pathname | |
1007 | * of the directory on a local file | |
1008 | * system containing permanent NFSv4 | |
1009 | * recovery data | |
1010 | * size: non-zero length of C string in @buf | |
1011 | * Output: | |
1012 | * On success: passed-in buffer filled with '\n'-terminated C string | |
1013 | * containing the current recovery pathname setting; | |
1014 | * return code is the size in bytes of the string | |
1015 | * On error: return code is zero or a negative errno value | |
1016 | */ | |
3dd98a3b JL |
1017 | static ssize_t write_recoverydir(struct file *file, char *buf, size_t size) |
1018 | { | |
1019 | ssize_t rv; | |
11f77942 SK |
1020 | struct net *net = file->f_dentry->d_sb->s_fs_info; |
1021 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); | |
3dd98a3b JL |
1022 | |
1023 | mutex_lock(&nfsd_mutex); | |
9dd9845f | 1024 | rv = __write_recoverydir(file, buf, size, nn); |
3dd98a3b JL |
1025 | mutex_unlock(&nfsd_mutex); |
1026 | return rv; | |
1027 | } | |
1028 | ||
70c3b76c | 1029 | #endif |
0964a3d3 | 1030 | |
1da177e4 LT |
1031 | /*----------------------------------------------------------------------------*/ |
1032 | /* | |
1033 | * populating the filesystem. | |
1034 | */ | |
1035 | ||
1036 | static int nfsd_fill_super(struct super_block * sb, void * data, int silent) | |
1037 | { | |
1038 | static struct tree_descr nfsd_files[] = { | |
96d851c4 | 1039 | [NFSD_List] = {"exports", &exports_nfsd_operations, S_IRUGO}, |
e8e8753f BF |
1040 | [NFSD_Export_features] = {"export_features", |
1041 | &export_features_operations, S_IRUGO}, | |
4373ea84 WC |
1042 | [NFSD_FO_UnlockIP] = {"unlock_ip", |
1043 | &transaction_ops, S_IWUSR|S_IRUSR}, | |
17efa372 WC |
1044 | [NFSD_FO_UnlockFS] = {"unlock_filesystem", |
1045 | &transaction_ops, S_IWUSR|S_IRUSR}, | |
1da177e4 LT |
1046 | [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR}, |
1047 | [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR}, | |
eed2965a | 1048 | [NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR}, |
03cf6c9f | 1049 | [NFSD_Pool_Stats] = {"pool_stats", &pool_stats_operations, S_IRUGO}, |
70c3b76c | 1050 | [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR}, |
80212d59 | 1051 | [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO}, |
596bbe53 | 1052 | [NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO}, |
b084f598 | 1053 | #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE) |
b0b0c0a2 | 1054 | [NFSD_SupportedEnctypes] = {"supported_krb5_enctypes", &supported_enctypes_ops, S_IRUGO}, |
b084f598 | 1055 | #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */ |
1da177e4 LT |
1056 | #ifdef CONFIG_NFSD_V4 |
1057 | [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR}, | |
efc4bb4f | 1058 | [NFSD_Gracetime] = {"nfsv4gracetime", &transaction_ops, S_IWUSR|S_IRUSR}, |
0964a3d3 | 1059 | [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR}, |
1da177e4 LT |
1060 | #endif |
1061 | /* last one */ {""} | |
1062 | }; | |
11f77942 SK |
1063 | struct net *net = data; |
1064 | int ret; | |
1065 | ||
1066 | ret = simple_fill_super(sb, 0x6e667364, nfsd_files); | |
1067 | if (ret) | |
1068 | return ret; | |
1069 | sb->s_fs_info = get_net(net); | |
1070 | return 0; | |
1da177e4 LT |
1071 | } |
1072 | ||
fc14f2fe AV |
1073 | static struct dentry *nfsd_mount(struct file_system_type *fs_type, |
1074 | int flags, const char *dev_name, void *data) | |
1da177e4 | 1075 | { |
11f77942 SK |
1076 | return mount_ns(fs_type, flags, current->nsproxy->net_ns, nfsd_fill_super); |
1077 | } | |
1078 | ||
1079 | static void nfsd_umount(struct super_block *sb) | |
1080 | { | |
1081 | struct net *net = sb->s_fs_info; | |
1082 | ||
1083 | kill_litter_super(sb); | |
1084 | put_net(net); | |
1da177e4 LT |
1085 | } |
1086 | ||
1087 | static struct file_system_type nfsd_fs_type = { | |
1088 | .owner = THIS_MODULE, | |
1089 | .name = "nfsd", | |
fc14f2fe | 1090 | .mount = nfsd_mount, |
11f77942 | 1091 | .kill_sb = nfsd_umount, |
1da177e4 | 1092 | }; |
7f78e035 | 1093 | MODULE_ALIAS_FS("nfsd"); |
1da177e4 | 1094 | |
e331f606 BF |
1095 | #ifdef CONFIG_PROC_FS |
1096 | static int create_proc_exports_entry(void) | |
1097 | { | |
1098 | struct proc_dir_entry *entry; | |
1099 | ||
1100 | entry = proc_mkdir("fs/nfs", NULL); | |
1101 | if (!entry) | |
1102 | return -ENOMEM; | |
96d851c4 SK |
1103 | entry = proc_create("exports", 0, entry, |
1104 | &exports_proc_operations); | |
e331f606 BF |
1105 | if (!entry) |
1106 | return -ENOMEM; | |
e331f606 BF |
1107 | return 0; |
1108 | } | |
1109 | #else /* CONFIG_PROC_FS */ | |
1110 | static int create_proc_exports_entry(void) | |
1111 | { | |
1112 | return 0; | |
1113 | } | |
1114 | #endif | |
1115 | ||
7ea34ac1 | 1116 | int nfsd_net_id; |
5717e012 SK |
1117 | |
1118 | static __net_init int nfsd_init_net(struct net *net) | |
1119 | { | |
1120 | int retval; | |
3d733711 | 1121 | struct nfsd_net *nn = net_generic(net, nfsd_net_id); |
5717e012 SK |
1122 | |
1123 | retval = nfsd_export_init(net); | |
1124 | if (retval) | |
1125 | goto out_export_error; | |
f69adb2f SK |
1126 | retval = nfsd_idmap_init(net); |
1127 | if (retval) | |
1128 | goto out_idmap_error; | |
3d733711 | 1129 | nn->nfsd4_lease = 90; /* default lease time */ |
5284b44e | 1130 | nn->nfsd4_grace = 90; |
5717e012 SK |
1131 | return 0; |
1132 | ||
f69adb2f SK |
1133 | out_idmap_error: |
1134 | nfsd_export_shutdown(net); | |
5717e012 SK |
1135 | out_export_error: |
1136 | return retval; | |
1137 | } | |
1138 | ||
1139 | static __net_exit void nfsd_exit_net(struct net *net) | |
1140 | { | |
f69adb2f | 1141 | nfsd_idmap_shutdown(net); |
5717e012 SK |
1142 | nfsd_export_shutdown(net); |
1143 | } | |
1144 | ||
7ea34ac1 | 1145 | static struct pernet_operations nfsd_net_ops = { |
5717e012 SK |
1146 | .init = nfsd_init_net, |
1147 | .exit = nfsd_exit_net, | |
7ea34ac1 JL |
1148 | .id = &nfsd_net_id, |
1149 | .size = sizeof(struct nfsd_net), | |
1150 | }; | |
1151 | ||
1da177e4 LT |
1152 | static int __init init_nfsd(void) |
1153 | { | |
1154 | int retval; | |
1155 | printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n"); | |
1156 | ||
797a9d79 | 1157 | retval = register_cld_notifier(); |
813fd320 JL |
1158 | if (retval) |
1159 | return retval; | |
7ea34ac1 JL |
1160 | retval = register_pernet_subsys(&nfsd_net_ops); |
1161 | if (retval < 0) | |
813fd320 | 1162 | goto out_unregister_notifier; |
72083396 | 1163 | retval = nfsd4_init_slabs(); |
e8ff2a84 | 1164 | if (retval) |
7ea34ac1 | 1165 | goto out_unregister_pernet; |
72083396 | 1166 | nfs4_state_init(); |
65178db4 BS |
1167 | retval = nfsd_fault_inject_init(); /* nfsd fault injection controls */ |
1168 | if (retval) | |
1169 | goto out_free_slabs; | |
1da177e4 | 1170 | nfsd_stat_init(); /* Statistics */ |
d5c3428b BF |
1171 | retval = nfsd_reply_cache_init(); |
1172 | if (retval) | |
1173 | goto out_free_stat; | |
1da177e4 | 1174 | nfsd_lockd_init(); /* lockd->nfsd callbacks */ |
e331f606 BF |
1175 | retval = create_proc_exports_entry(); |
1176 | if (retval) | |
f69adb2f | 1177 | goto out_free_lockd; |
1da177e4 | 1178 | retval = register_filesystem(&nfsd_fs_type); |
26808d3f BF |
1179 | if (retval) |
1180 | goto out_free_all; | |
1181 | return 0; | |
1182 | out_free_all: | |
26808d3f BF |
1183 | remove_proc_entry("fs/nfs/exports", NULL); |
1184 | remove_proc_entry("fs/nfs", NULL); | |
dbf847ec | 1185 | out_free_lockd: |
26808d3f | 1186 | nfsd_lockd_shutdown(); |
e331f606 | 1187 | nfsd_reply_cache_shutdown(); |
d5c3428b BF |
1188 | out_free_stat: |
1189 | nfsd_stat_shutdown(); | |
65178db4 BS |
1190 | nfsd_fault_inject_cleanup(); |
1191 | out_free_slabs: | |
26808d3f | 1192 | nfsd4_free_slabs(); |
7ea34ac1 JL |
1193 | out_unregister_pernet: |
1194 | unregister_pernet_subsys(&nfsd_net_ops); | |
813fd320 | 1195 | out_unregister_notifier: |
797a9d79 | 1196 | unregister_cld_notifier(); |
1da177e4 LT |
1197 | return retval; |
1198 | } | |
1199 | ||
1200 | static void __exit exit_nfsd(void) | |
1201 | { | |
d5c3428b | 1202 | nfsd_reply_cache_shutdown(); |
1da177e4 LT |
1203 | remove_proc_entry("fs/nfs/exports", NULL); |
1204 | remove_proc_entry("fs/nfs", NULL); | |
1205 | nfsd_stat_shutdown(); | |
1206 | nfsd_lockd_shutdown(); | |
e8ff2a84 | 1207 | nfsd4_free_slabs(); |
65178db4 | 1208 | nfsd_fault_inject_cleanup(); |
1da177e4 | 1209 | unregister_filesystem(&nfsd_fs_type); |
7ea34ac1 | 1210 | unregister_pernet_subsys(&nfsd_net_ops); |
797a9d79 | 1211 | unregister_cld_notifier(); |
1da177e4 LT |
1212 | } |
1213 | ||
1214 | MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>"); | |
1215 | MODULE_LICENSE("GPL"); | |
1216 | module_init(init_nfsd) | |
1217 | module_exit(exit_nfsd) |