blob: 4514ebbee4d6246aac28086ecbb90a0568a01d16 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * Syscall interface to knfsd.
3 *
4 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
5 */
6
Tejun Heo5a0e3ad2010-03-24 17:04:11 +09007#include <linux/slab.h>
Al Viro3f8206d2008-07-26 03:46:43 -04008#include <linux/namei.h>
NeilBrownb41b66d2006-10-02 02:17:48 -07009#include <linux/ctype.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070010
Linus Torvalds1da177e2005-04-16 15:20:36 -070011#include <linux/nfsd_idmap.h>
NeilBrown80212d52006-10-02 02:17:47 -070012#include <linux/sunrpc/svcsock.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070013#include <linux/nfsd/syscall.h>
Wendy Cheng4373ea82008-01-17 11:10:12 -050014#include <linux/lockd/lockd.h>
Chuck Lever41160922009-08-09 15:09:40 -040015#include <linux/sunrpc/clnt.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070016
Boaz Harrosh9a74af22009-12-03 20:30:56 +020017#include "nfsd.h"
18#include "cache.h"
19
Linus Torvalds1da177e2005-04-16 15:20:36 -070020/*
21 * We have a single directory with 9 nodes in it.
22 */
23enum {
24 NFSD_Root = 1,
NeilBrown1e140562010-09-22 12:55:07 +100025#ifdef CONFIG_NFSD_DEPRECATED
Linus Torvalds1da177e2005-04-16 15:20:36 -070026 NFSD_Svc,
27 NFSD_Add,
28 NFSD_Del,
29 NFSD_Export,
30 NFSD_Unexport,
31 NFSD_Getfd,
32 NFSD_Getfs,
NeilBrown1e140562010-09-22 12:55:07 +100033#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070034 NFSD_List,
J. Bruce Fieldse8e87532009-12-14 12:53:32 -050035 NFSD_Export_features,
Linus Torvalds1da177e2005-04-16 15:20:36 -070036 NFSD_Fh,
Wendy Cheng4373ea82008-01-17 11:10:12 -050037 NFSD_FO_UnlockIP,
Wendy Cheng17efa372008-01-17 11:10:12 -050038 NFSD_FO_UnlockFS,
Linus Torvalds1da177e2005-04-16 15:20:36 -070039 NFSD_Threads,
Greg Bankseed29652006-10-02 02:18:02 -070040 NFSD_Pool_Threads,
Greg Banks03cf6c92009-01-13 21:26:36 +110041 NFSD_Pool_Stats,
NeilBrown70c3b762005-11-07 01:00:25 -080042 NFSD_Versions,
NeilBrown80212d52006-10-02 02:17:47 -070043 NFSD_Ports,
NeilBrown596bbe52006-10-04 02:15:48 -070044 NFSD_MaxBlkSize,
NeilBrown70c3b762005-11-07 01:00:25 -080045 /*
46 * The below MUST come last. Otherwise we leave a hole in nfsd_files[]
47 * with !CONFIG_NFSD_V4 and simple_fill_super() goes oops
48 */
49#ifdef CONFIG_NFSD_V4
Linus Torvalds1da177e2005-04-16 15:20:36 -070050 NFSD_Leasetime,
J. Bruce Fieldsefc4bb4f2010-03-02 11:04:06 -050051 NFSD_Gracetime,
NeilBrown0964a3d2005-06-23 22:04:32 -070052 NFSD_RecoveryDir,
NeilBrown70c3b762005-11-07 01:00:25 -080053#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070054};
55
56/*
57 * write() for these nodes.
58 */
NeilBrown1e140562010-09-22 12:55:07 +100059#ifdef CONFIG_NFSD_DEPRECATED
Linus Torvalds1da177e2005-04-16 15:20:36 -070060static ssize_t write_svc(struct file *file, char *buf, size_t size);
61static ssize_t write_add(struct file *file, char *buf, size_t size);
62static ssize_t write_del(struct file *file, char *buf, size_t size);
63static ssize_t write_export(struct file *file, char *buf, size_t size);
64static ssize_t write_unexport(struct file *file, char *buf, size_t size);
65static ssize_t write_getfd(struct file *file, char *buf, size_t size);
66static ssize_t write_getfs(struct file *file, char *buf, size_t size);
NeilBrown1e140562010-09-22 12:55:07 +100067#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070068static ssize_t write_filehandle(struct file *file, char *buf, size_t size);
Chuck Leverb046ccd2008-12-12 16:57:13 -050069static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size);
70static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size);
Linus Torvalds1da177e2005-04-16 15:20:36 -070071static ssize_t write_threads(struct file *file, char *buf, size_t size);
Greg Bankseed29652006-10-02 02:18:02 -070072static ssize_t write_pool_threads(struct file *file, char *buf, size_t size);
NeilBrown70c3b762005-11-07 01:00:25 -080073static ssize_t write_versions(struct file *file, char *buf, size_t size);
NeilBrown80212d52006-10-02 02:17:47 -070074static ssize_t write_ports(struct file *file, char *buf, size_t size);
NeilBrown596bbe52006-10-04 02:15:48 -070075static ssize_t write_maxblksize(struct file *file, char *buf, size_t size);
NeilBrown70c3b762005-11-07 01:00:25 -080076#ifdef CONFIG_NFSD_V4
Linus Torvalds1da177e2005-04-16 15:20:36 -070077static ssize_t write_leasetime(struct file *file, char *buf, size_t size);
J. Bruce Fieldsefc4bb4f2010-03-02 11:04:06 -050078static ssize_t write_gracetime(struct file *file, char *buf, size_t size);
NeilBrown0964a3d2005-06-23 22:04:32 -070079static ssize_t write_recoverydir(struct file *file, char *buf, size_t size);
NeilBrown70c3b762005-11-07 01:00:25 -080080#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070081
82static ssize_t (*write_op[])(struct file *, char *, size_t) = {
NeilBrown1e140562010-09-22 12:55:07 +100083#ifdef CONFIG_NFSD_DEPRECATED
Linus Torvalds1da177e2005-04-16 15:20:36 -070084 [NFSD_Svc] = write_svc,
85 [NFSD_Add] = write_add,
86 [NFSD_Del] = write_del,
87 [NFSD_Export] = write_export,
88 [NFSD_Unexport] = write_unexport,
89 [NFSD_Getfd] = write_getfd,
90 [NFSD_Getfs] = write_getfs,
NeilBrown1e140562010-09-22 12:55:07 +100091#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070092 [NFSD_Fh] = write_filehandle,
Chuck Leverb046ccd2008-12-12 16:57:13 -050093 [NFSD_FO_UnlockIP] = write_unlock_ip,
94 [NFSD_FO_UnlockFS] = write_unlock_fs,
Linus Torvalds1da177e2005-04-16 15:20:36 -070095 [NFSD_Threads] = write_threads,
Greg Bankseed29652006-10-02 02:18:02 -070096 [NFSD_Pool_Threads] = write_pool_threads,
NeilBrown70c3b762005-11-07 01:00:25 -080097 [NFSD_Versions] = write_versions,
NeilBrown80212d52006-10-02 02:17:47 -070098 [NFSD_Ports] = write_ports,
NeilBrown596bbe52006-10-04 02:15:48 -070099 [NFSD_MaxBlkSize] = write_maxblksize,
NeilBrown70c3b762005-11-07 01:00:25 -0800100#ifdef CONFIG_NFSD_V4
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101 [NFSD_Leasetime] = write_leasetime,
J. Bruce Fieldsefc4bb4f2010-03-02 11:04:06 -0500102 [NFSD_Gracetime] = write_gracetime,
NeilBrown0964a3d2005-06-23 22:04:32 -0700103 [NFSD_RecoveryDir] = write_recoverydir,
NeilBrown70c3b762005-11-07 01:00:25 -0800104#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105};
106
107static ssize_t nfsctl_transaction_write(struct file *file, const char __user *buf, size_t size, loff_t *pos)
108{
Josef "Jeff" Sipek7eaa36e2006-12-08 02:36:41 -0800109 ino_t ino = file->f_path.dentry->d_inode->i_ino;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110 char *data;
111 ssize_t rv;
112
Tobias Klausere8c96f82006-03-24 03:15:34 -0800113 if (ino >= ARRAY_SIZE(write_op) || !write_op[ino])
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114 return -EINVAL;
115
116 data = simple_transaction_get(file, buf, size);
117 if (IS_ERR(data))
118 return PTR_ERR(data);
119
120 rv = write_op[ino](file, data, size);
NeilBrown8971a102007-02-14 00:33:11 -0800121 if (rv >= 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 simple_transaction_set(file, rv);
123 rv = size;
124 }
125 return rv;
126}
127
NeilBrown73900222005-11-07 01:00:24 -0800128static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size_t size, loff_t *pos)
129{
NeilBrownc67874f2010-09-22 12:55:07 +1000130 static int warned;
131 if (file->f_dentry->d_name.name[0] == '.' && !warned) {
NeilBrownc67874f2010-09-22 12:55:07 +1000132 printk(KERN_INFO
133 "Warning: \"%s\" uses deprecated NFSD interface: %s."
134 " This will be removed in 2.6.40\n",
Pavel Emelyanov049ef272010-09-23 18:26:58 +0400135 current->comm, file->f_dentry->d_name.name);
NeilBrownc67874f2010-09-22 12:55:07 +1000136 warned = 1;
137 }
NeilBrown73900222005-11-07 01:00:24 -0800138 if (! file->private_data) {
139 /* An attempt to read a transaction file without writing
140 * causes a 0-byte write so that the file can return
141 * state information
142 */
143 ssize_t rv = nfsctl_transaction_write(file, buf, 0, pos);
144 if (rv < 0)
145 return rv;
146 }
147 return simple_transaction_read(file, buf, size, pos);
148}
149
Arjan van de Ven4b6f5d22006-03-28 01:56:42 -0800150static const struct file_operations transaction_ops = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151 .write = nfsctl_transaction_write,
NeilBrown73900222005-11-07 01:00:24 -0800152 .read = nfsctl_transaction_read,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153 .release = simple_transaction_release,
Arnd Bergmann6038f372010-08-15 18:52:59 +0200154 .llseek = default_llseek,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155};
156
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157static int exports_open(struct inode *inode, struct file *file)
158{
159 return seq_open(file, &nfs_exports_op);
160}
161
Arjan van de Ven4b6f5d22006-03-28 01:56:42 -0800162static const struct file_operations exports_operations = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163 .open = exports_open,
164 .read = seq_read,
165 .llseek = seq_lseek,
166 .release = seq_release,
Denis V. Lunev9ef2db22008-04-29 01:02:04 -0700167 .owner = THIS_MODULE,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168};
169
J. Bruce Fieldse8e87532009-12-14 12:53:32 -0500170static int export_features_show(struct seq_file *m, void *v)
171{
172 seq_printf(m, "0x%x 0x%x\n", NFSEXP_ALLFLAGS, NFSEXP_SECINFO_FLAGS);
173 return 0;
174}
175
176static int export_features_open(struct inode *inode, struct file *file)
177{
178 return single_open(file, export_features_show, NULL);
179}
180
181static struct file_operations export_features_operations = {
182 .open = export_features_open,
183 .read = seq_read,
184 .llseek = seq_lseek,
185 .release = single_release,
186};
187
Greg Banks03cf6c92009-01-13 21:26:36 +1100188extern int nfsd_pool_stats_open(struct inode *inode, struct file *file);
Ryusei Yamaguchied2d8ae2009-08-16 00:54:41 +0900189extern int nfsd_pool_stats_release(struct inode *inode, struct file *file);
Greg Banks03cf6c92009-01-13 21:26:36 +1100190
Alexey Dobriyan828c0952009-10-01 15:43:56 -0700191static const struct file_operations pool_stats_operations = {
Greg Banks03cf6c92009-01-13 21:26:36 +1100192 .open = nfsd_pool_stats_open,
193 .read = seq_read,
194 .llseek = seq_lseek,
Ryusei Yamaguchied2d8ae2009-08-16 00:54:41 +0900195 .release = nfsd_pool_stats_release,
Greg Banks03cf6c92009-01-13 21:26:36 +1100196 .owner = THIS_MODULE,
197};
198
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199/*----------------------------------------------------------------------------*/
200/*
201 * payload - write methods
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202 */
203
NeilBrown1e140562010-09-22 12:55:07 +1000204#ifdef CONFIG_NFSD_DEPRECATED
Chuck Lever262a0982008-12-12 16:57:35 -0500205/**
206 * write_svc - Start kernel's NFSD server
207 *
208 * Deprecated. /proc/fs/nfsd/threads is preferred.
209 * Function remains to support old versions of nfs-utils.
210 *
211 * Input:
212 * buf: struct nfsctl_svc
213 * svc_port: port number of this
214 * server's listener
215 * svc_nthreads: number of threads to start
216 * size: size in bytes of passed in nfsctl_svc
217 * Output:
218 * On success: returns zero
219 * On error: return code is negative errno value
220 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221static ssize_t write_svc(struct file *file, char *buf, size_t size)
222{
223 struct nfsctl_svc *data;
NeilBrown82e12fe2009-06-16 11:03:07 +1000224 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225 if (size < sizeof(*data))
226 return -EINVAL;
227 data = (struct nfsctl_svc*) buf;
NeilBrown82e12fe2009-06-16 11:03:07 +1000228 err = nfsd_svc(data->svc_port, data->svc_nthreads);
229 if (err < 0)
230 return err;
231 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232}
233
Chuck Lever262a0982008-12-12 16:57:35 -0500234/**
235 * write_add - Add or modify client entry in auth unix cache
236 *
237 * Deprecated. /proc/net/rpc/auth.unix.ip is preferred.
238 * Function remains to support old versions of nfs-utils.
239 *
240 * Input:
241 * buf: struct nfsctl_client
242 * cl_ident: '\0'-terminated C string
243 * containing domain name
244 * of client
245 * cl_naddr: no. of items in cl_addrlist
246 * cl_addrlist: array of client addresses
247 * cl_fhkeytype: ignored
248 * cl_fhkeylen: ignored
249 * cl_fhkey: ignored
250 * size: size in bytes of passed in nfsctl_client
251 * Output:
252 * On success: returns zero
253 * On error: return code is negative errno value
254 *
255 * Note: Only AF_INET client addresses are passed in, since
256 * nfsctl_client.cl_addrlist contains only in_addr fields for addresses.
257 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258static ssize_t write_add(struct file *file, char *buf, size_t size)
259{
260 struct nfsctl_client *data;
261 if (size < sizeof(*data))
262 return -EINVAL;
263 data = (struct nfsctl_client *)buf;
264 return exp_addclient(data);
265}
266
Chuck Lever262a0982008-12-12 16:57:35 -0500267/**
268 * write_del - Remove client from auth unix cache
269 *
270 * Deprecated. /proc/net/rpc/auth.unix.ip is preferred.
271 * Function remains to support old versions of nfs-utils.
272 *
273 * Input:
274 * buf: struct nfsctl_client
275 * cl_ident: '\0'-terminated C string
276 * containing domain name
277 * of client
278 * cl_naddr: ignored
279 * cl_addrlist: ignored
280 * cl_fhkeytype: ignored
281 * cl_fhkeylen: ignored
282 * cl_fhkey: ignored
283 * size: size in bytes of passed in nfsctl_client
284 * Output:
285 * On success: returns zero
286 * On error: return code is negative errno value
287 *
288 * Note: Only AF_INET client addresses are passed in, since
289 * nfsctl_client.cl_addrlist contains only in_addr fields for addresses.
290 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291static ssize_t write_del(struct file *file, char *buf, size_t size)
292{
293 struct nfsctl_client *data;
294 if (size < sizeof(*data))
295 return -EINVAL;
296 data = (struct nfsctl_client *)buf;
297 return exp_delclient(data);
298}
299
Chuck Lever262a0982008-12-12 16:57:35 -0500300/**
301 * write_export - Export part or all of a local file system
302 *
303 * Deprecated. /proc/net/rpc/{nfsd.export,nfsd.fh} are preferred.
304 * Function remains to support old versions of nfs-utils.
305 *
306 * Input:
307 * buf: struct nfsctl_export
308 * ex_client: '\0'-terminated C string
309 * containing domain name
310 * of client allowed to access
311 * this export
312 * ex_path: '\0'-terminated C string
313 * containing pathname of
314 * directory in local file system
315 * ex_dev: fsid to use for this export
316 * ex_ino: ignored
317 * ex_flags: export flags for this export
318 * ex_anon_uid: UID to use for anonymous
319 * requests
320 * ex_anon_gid: GID to use for anonymous
321 * requests
322 * size: size in bytes of passed in nfsctl_export
323 * Output:
324 * On success: returns zero
325 * On error: return code is negative errno value
326 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327static ssize_t write_export(struct file *file, char *buf, size_t size)
328{
329 struct nfsctl_export *data;
330 if (size < sizeof(*data))
331 return -EINVAL;
332 data = (struct nfsctl_export*)buf;
333 return exp_export(data);
334}
335
Chuck Lever262a0982008-12-12 16:57:35 -0500336/**
337 * write_unexport - Unexport a previously exported file system
338 *
339 * Deprecated. /proc/net/rpc/{nfsd.export,nfsd.fh} are preferred.
340 * Function remains to support old versions of nfs-utils.
341 *
342 * Input:
343 * buf: struct nfsctl_export
344 * ex_client: '\0'-terminated C string
345 * containing domain name
346 * of client no longer allowed
347 * to access this export
348 * ex_path: '\0'-terminated C string
349 * containing pathname of
350 * directory in local file system
351 * ex_dev: ignored
352 * ex_ino: ignored
353 * ex_flags: ignored
354 * ex_anon_uid: ignored
355 * ex_anon_gid: ignored
356 * size: size in bytes of passed in nfsctl_export
357 * Output:
358 * On success: returns zero
359 * On error: return code is negative errno value
360 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361static ssize_t write_unexport(struct file *file, char *buf, size_t size)
362{
363 struct nfsctl_export *data;
364
365 if (size < sizeof(*data))
366 return -EINVAL;
367 data = (struct nfsctl_export*)buf;
368 return exp_unexport(data);
369}
370
Chuck Lever262a0982008-12-12 16:57:35 -0500371/**
372 * write_getfs - Get a variable-length NFS file handle by path
373 *
374 * Deprecated. /proc/fs/nfsd/filehandle is preferred.
375 * Function remains to support old versions of nfs-utils.
376 *
377 * Input:
378 * buf: struct nfsctl_fsparm
379 * gd_addr: socket address of client
380 * gd_path: '\0'-terminated C string
381 * containing pathname of
382 * directory in local file system
383 * gd_maxlen: maximum size of returned file
384 * handle
385 * size: size in bytes of passed in nfsctl_fsparm
386 * Output:
387 * On success: passed-in buffer filled with a knfsd_fh structure
388 * (a variable-length raw NFS file handle);
389 * return code is the size in bytes of the file handle
390 * On error: return code is negative errno value
391 *
392 * Note: Only AF_INET client addresses are passed in, since gd_addr
393 * is the same size as a struct sockaddr_in.
394 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395static ssize_t write_getfs(struct file *file, char *buf, size_t size)
396{
397 struct nfsctl_fsparm *data;
398 struct sockaddr_in *sin;
399 struct auth_domain *clp;
400 int err = 0;
401 struct knfsd_fh *res;
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100402 struct in6_addr in6;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403
404 if (size < sizeof(*data))
405 return -EINVAL;
406 data = (struct nfsctl_fsparm*)buf;
407 err = -EPROTONOSUPPORT;
408 if (data->gd_addr.sa_family != AF_INET)
409 goto out;
410 sin = (struct sockaddr_in *)&data->gd_addr;
411 if (data->gd_maxlen > NFS3_FHSIZE)
412 data->gd_maxlen = NFS3_FHSIZE;
413
414 res = (struct knfsd_fh*)buf;
415
416 exp_readlock();
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100417
418 ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6);
419
Pavel Emelyanov352114f2010-09-27 13:59:48 +0400420 clp = auth_unix_lookup(&init_net, &in6);
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100421 if (!clp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 err = -EPERM;
423 else {
424 err = exp_rootfh(clp, data->gd_path, res, data->gd_maxlen);
425 auth_domain_put(clp);
426 }
427 exp_readunlock();
428 if (err == 0)
Andrew Morton12127492007-07-17 04:04:34 -0700429 err = res->fh_size + offsetof(struct knfsd_fh, fh_base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430 out:
431 return err;
432}
433
Chuck Lever262a0982008-12-12 16:57:35 -0500434/**
435 * write_getfd - Get a fixed-length NFS file handle by path (used by mountd)
436 *
437 * Deprecated. /proc/fs/nfsd/filehandle is preferred.
438 * Function remains to support old versions of nfs-utils.
439 *
440 * Input:
441 * buf: struct nfsctl_fdparm
442 * gd_addr: socket address of client
443 * gd_path: '\0'-terminated C string
444 * containing pathname of
445 * directory in local file system
446 * gd_version: fdparm structure version
447 * size: size in bytes of passed in nfsctl_fdparm
448 * Output:
449 * On success: passed-in buffer filled with nfsctl_res
450 * (a fixed-length raw NFS file handle);
451 * return code is the size in bytes of the file handle
452 * On error: return code is negative errno value
453 *
454 * Note: Only AF_INET client addresses are passed in, since gd_addr
455 * is the same size as a struct sockaddr_in.
456 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457static ssize_t write_getfd(struct file *file, char *buf, size_t size)
458{
459 struct nfsctl_fdparm *data;
460 struct sockaddr_in *sin;
461 struct auth_domain *clp;
462 int err = 0;
463 struct knfsd_fh fh;
464 char *res;
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100465 struct in6_addr in6;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466
467 if (size < sizeof(*data))
468 return -EINVAL;
469 data = (struct nfsctl_fdparm*)buf;
470 err = -EPROTONOSUPPORT;
471 if (data->gd_addr.sa_family != AF_INET)
472 goto out;
473 err = -EINVAL;
474 if (data->gd_version < 2 || data->gd_version > NFSSVC_MAXVERS)
475 goto out;
476
477 res = buf;
478 sin = (struct sockaddr_in *)&data->gd_addr;
479 exp_readlock();
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100480
481 ipv6_addr_set_v4mapped(sin->sin_addr.s_addr, &in6);
482
Pavel Emelyanov352114f2010-09-27 13:59:48 +0400483 clp = auth_unix_lookup(&init_net, &in6);
Aurélien Charbonf15364b2008-01-18 15:50:56 +0100484 if (!clp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485 err = -EPERM;
486 else {
487 err = exp_rootfh(clp, data->gd_path, &fh, NFS_FHSIZE);
488 auth_domain_put(clp);
489 }
490 exp_readunlock();
491
492 if (err == 0) {
493 memset(res,0, NFS_FHSIZE);
494 memcpy(res, &fh.fh_base, fh.fh_size);
495 err = NFS_FHSIZE;
496 }
497 out:
498 return err;
499}
NeilBrown1e140562010-09-22 12:55:07 +1000500#endif /* CONFIG_NFSD_DEPRECATED */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501
Chuck Lever262a0982008-12-12 16:57:35 -0500502/**
503 * write_unlock_ip - Release all locks used by a client
504 *
505 * Experimental.
506 *
507 * Input:
508 * buf: '\n'-terminated C string containing a
Chuck Lever41160922009-08-09 15:09:40 -0400509 * presentation format IP address
Chuck Lever262a0982008-12-12 16:57:35 -0500510 * size: length of C string in @buf
511 * Output:
512 * On success: returns zero if all specified locks were released;
513 * returns one if one or more locks were not released
514 * On error: return code is negative errno value
Chuck Lever262a0982008-12-12 16:57:35 -0500515 */
Chuck Leverb046ccd2008-12-12 16:57:13 -0500516static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size)
Wendy Cheng4373ea82008-01-17 11:10:12 -0500517{
Chuck Lever41160922009-08-09 15:09:40 -0400518 struct sockaddr_storage address;
519 struct sockaddr *sap = (struct sockaddr *)&address;
520 size_t salen = sizeof(address);
Chuck Lever367c8c72008-06-30 18:58:14 -0400521 char *fo_path;
Wendy Cheng4373ea82008-01-17 11:10:12 -0500522
523 /* sanity check */
524 if (size == 0)
525 return -EINVAL;
526
527 if (buf[size-1] != '\n')
528 return -EINVAL;
529
530 fo_path = buf;
531 if (qword_get(&buf, fo_path, size) < 0)
532 return -EINVAL;
533
Chuck Lever41160922009-08-09 15:09:40 -0400534 if (rpc_pton(fo_path, size, sap, salen) == 0)
Wendy Cheng4373ea82008-01-17 11:10:12 -0500535 return -EINVAL;
Wendy Cheng4373ea82008-01-17 11:10:12 -0500536
Chuck Lever41160922009-08-09 15:09:40 -0400537 return nlmsvc_unlock_all_by_ip(sap);
Wendy Cheng4373ea82008-01-17 11:10:12 -0500538}
539
Chuck Lever262a0982008-12-12 16:57:35 -0500540/**
541 * write_unlock_fs - Release all locks on a local file system
542 *
543 * Experimental.
544 *
545 * Input:
546 * buf: '\n'-terminated C string containing the
547 * absolute pathname of a local file system
548 * size: length of C string in @buf
549 * Output:
550 * On success: returns zero if all specified locks were released;
551 * returns one if one or more locks were not released
552 * On error: return code is negative errno value
553 */
Chuck Leverb046ccd2008-12-12 16:57:13 -0500554static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size)
Wendy Cheng17efa372008-01-17 11:10:12 -0500555{
Al Viroa63bb992008-08-02 01:03:36 -0400556 struct path path;
Wendy Cheng17efa372008-01-17 11:10:12 -0500557 char *fo_path;
558 int error;
559
560 /* sanity check */
561 if (size == 0)
562 return -EINVAL;
563
564 if (buf[size-1] != '\n')
565 return -EINVAL;
566
567 fo_path = buf;
568 if (qword_get(&buf, fo_path, size) < 0)
569 return -EINVAL;
570
Al Viroa63bb992008-08-02 01:03:36 -0400571 error = kern_path(fo_path, 0, &path);
Wendy Cheng17efa372008-01-17 11:10:12 -0500572 if (error)
573 return error;
574
Chuck Lever262a0982008-12-12 16:57:35 -0500575 /*
576 * XXX: Needs better sanity checking. Otherwise we could end up
577 * releasing locks on the wrong file system.
578 *
579 * For example:
580 * 1. Does the path refer to a directory?
581 * 2. Is that directory a mount point, or
582 * 3. Is that directory the root of an exported file system?
583 */
Al Viroa63bb992008-08-02 01:03:36 -0400584 error = nlmsvc_unlock_all_by_sb(path.mnt->mnt_sb);
Wendy Cheng17efa372008-01-17 11:10:12 -0500585
Al Viroa63bb992008-08-02 01:03:36 -0400586 path_put(&path);
Wendy Cheng17efa372008-01-17 11:10:12 -0500587 return error;
588}
589
Chuck Lever262a0982008-12-12 16:57:35 -0500590/**
591 * write_filehandle - Get a variable-length NFS file handle by path
592 *
593 * On input, the buffer contains a '\n'-terminated C string comprised of
594 * three alphanumeric words separated by whitespace. The string may
595 * contain escape sequences.
596 *
597 * Input:
598 * buf:
599 * domain: client domain name
600 * path: export pathname
601 * maxsize: numeric maximum size of
602 * @buf
603 * size: length of C string in @buf
604 * Output:
605 * On success: passed-in buffer filled with '\n'-terminated C
606 * string containing a ASCII hex text version
607 * of the NFS file handle;
608 * return code is the size in bytes of the string
609 * On error: return code is negative errno value
610 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
612{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613 char *dname, *path;
Andrew Morton246d95b2007-08-09 00:53:50 -0700614 int uninitialized_var(maxsize);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700615 char *mesg = buf;
616 int len;
617 struct auth_domain *dom;
618 struct knfsd_fh fh;
619
J. Bruce Fields87d26ea2008-01-22 17:40:42 -0500620 if (size == 0)
621 return -EINVAL;
622
Linus Torvalds1da177e2005-04-16 15:20:36 -0700623 if (buf[size-1] != '\n')
624 return -EINVAL;
625 buf[size-1] = 0;
626
627 dname = mesg;
628 len = qword_get(&mesg, dname, size);
Chuck Lever54224f02008-12-12 16:57:20 -0500629 if (len <= 0)
630 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700631
632 path = dname+len+1;
633 len = qword_get(&mesg, path, size);
Chuck Lever54224f02008-12-12 16:57:20 -0500634 if (len <= 0)
635 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700636
637 len = get_int(&mesg, &maxsize);
638 if (len)
639 return len;
640
641 if (maxsize < NFS_FHSIZE)
642 return -EINVAL;
643 if (maxsize > NFS3_FHSIZE)
644 maxsize = NFS3_FHSIZE;
645
646 if (qword_get(&mesg, mesg, size)>0)
647 return -EINVAL;
648
649 /* we have all the words, they are in buf.. */
650 dom = unix_domain_find(dname);
651 if (!dom)
652 return -ENOMEM;
653
654 len = exp_rootfh(dom, path, &fh, maxsize);
655 auth_domain_put(dom);
656 if (len)
657 return len;
658
Chuck Lever54224f02008-12-12 16:57:20 -0500659 mesg = buf;
660 len = SIMPLE_TRANSACTION_LIMIT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661 qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size);
662 mesg[-1] = '\n';
663 return mesg - buf;
664}
665
Chuck Lever262a0982008-12-12 16:57:35 -0500666/**
667 * write_threads - Start NFSD, or report the current number of running threads
668 *
669 * Input:
670 * buf: ignored
671 * size: zero
672 * Output:
673 * On success: passed-in buffer filled with '\n'-terminated C
674 * string numeric value representing the number of
675 * running NFSD threads;
676 * return code is the size in bytes of the string
677 * On error: return code is zero
678 *
679 * OR
680 *
681 * Input:
682 * buf: C string containing an unsigned
683 * integer value representing the
684 * number of NFSD threads to start
685 * size: non-zero length of C string in @buf
686 * Output:
687 * On success: NFS service is started;
688 * passed-in buffer filled with '\n'-terminated C
689 * string numeric value representing the number of
690 * running NFSD threads;
691 * return code is the size in bytes of the string
692 * On error: return code is zero or a negative errno value
693 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694static ssize_t write_threads(struct file *file, char *buf, size_t size)
695{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696 char *mesg = buf;
697 int rv;
698 if (size > 0) {
699 int newthreads;
700 rv = get_int(&mesg, &newthreads);
701 if (rv)
702 return rv;
Chuck Lever9e074852008-12-12 16:57:27 -0500703 if (newthreads < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700704 return -EINVAL;
Chuck Lever9e074852008-12-12 16:57:27 -0500705 rv = nfsd_svc(NFS_PORT, newthreads);
NeilBrown82e12fe2009-06-16 11:03:07 +1000706 if (rv < 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700707 return rv;
NeilBrown82e12fe2009-06-16 11:03:07 +1000708 } else
709 rv = nfsd_nrthreads();
Chuck Levere06b6402009-04-23 19:33:25 -0400710
NeilBrown82e12fe2009-06-16 11:03:07 +1000711 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", rv);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700712}
713
Chuck Lever262a0982008-12-12 16:57:35 -0500714/**
715 * write_pool_threads - Set or report the current number of threads per pool
716 *
717 * Input:
718 * buf: ignored
719 * size: zero
720 *
721 * OR
722 *
723 * Input:
724 * buf: C string containing whitespace-
725 * separated unsigned integer values
726 * representing the number of NFSD
727 * threads to start in each pool
728 * size: non-zero length of C string in @buf
729 * Output:
730 * On success: passed-in buffer filled with '\n'-terminated C
731 * string containing integer values representing the
732 * number of NFSD threads in each pool;
733 * return code is the size in bytes of the string
734 * On error: return code is zero or a negative errno value
735 */
Greg Bankseed29652006-10-02 02:18:02 -0700736static ssize_t write_pool_threads(struct file *file, char *buf, size_t size)
737{
738 /* if size > 0, look for an array of number of threads per node
739 * and apply them then write out number of threads per node as reply
740 */
741 char *mesg = buf;
742 int i;
743 int rv;
744 int len;
Neil Brownbedbdd82008-06-10 08:40:35 -0400745 int npools;
Greg Bankseed29652006-10-02 02:18:02 -0700746 int *nthreads;
747
Neil Brownbedbdd82008-06-10 08:40:35 -0400748 mutex_lock(&nfsd_mutex);
749 npools = nfsd_nrpools();
Greg Bankseed29652006-10-02 02:18:02 -0700750 if (npools == 0) {
751 /*
752 * NFS is shut down. The admin can start it by
753 * writing to the threads file but NOT the pool_threads
754 * file, sorry. Report zero threads.
755 */
Neil Brownbedbdd82008-06-10 08:40:35 -0400756 mutex_unlock(&nfsd_mutex);
Greg Bankseed29652006-10-02 02:18:02 -0700757 strcpy(buf, "0\n");
758 return strlen(buf);
759 }
760
761 nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL);
Neil Brownbedbdd82008-06-10 08:40:35 -0400762 rv = -ENOMEM;
Greg Bankseed29652006-10-02 02:18:02 -0700763 if (nthreads == NULL)
Neil Brownbedbdd82008-06-10 08:40:35 -0400764 goto out_free;
Greg Bankseed29652006-10-02 02:18:02 -0700765
766 if (size > 0) {
767 for (i = 0; i < npools; i++) {
768 rv = get_int(&mesg, &nthreads[i]);
769 if (rv == -ENOENT)
770 break; /* fewer numbers than pools */
771 if (rv)
772 goto out_free; /* syntax error */
773 rv = -EINVAL;
774 if (nthreads[i] < 0)
775 goto out_free;
776 }
777 rv = nfsd_set_nrthreads(i, nthreads);
778 if (rv)
779 goto out_free;
780 }
781
782 rv = nfsd_get_nrthreads(npools, nthreads);
783 if (rv)
784 goto out_free;
785
786 mesg = buf;
787 size = SIMPLE_TRANSACTION_LIMIT;
788 for (i = 0; i < npools && size > 0; i++) {
789 snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? '\n' : ' '));
790 len = strlen(mesg);
791 size -= len;
792 mesg += len;
793 }
J. Bruce Fields413d63d7102009-07-28 11:37:25 -0400794 rv = mesg - buf;
Greg Bankseed29652006-10-02 02:18:02 -0700795out_free:
796 kfree(nthreads);
Neil Brownbedbdd82008-06-10 08:40:35 -0400797 mutex_unlock(&nfsd_mutex);
Greg Bankseed29652006-10-02 02:18:02 -0700798 return rv;
799}
800
Jeff Layton3dd98a32008-06-10 08:40:36 -0400801static ssize_t __write_versions(struct file *file, char *buf, size_t size)
NeilBrown70c3b762005-11-07 01:00:25 -0800802{
NeilBrown70c3b762005-11-07 01:00:25 -0800803 char *mesg = buf;
Benny Halevy8daf2202009-04-03 08:28:59 +0300804 char *vers, *minorp, sign;
Chuck Lever261758b2009-04-23 19:33:18 -0400805 int len, num, remaining;
Benny Halevy8daf2202009-04-03 08:28:59 +0300806 unsigned minor;
NeilBrown70c3b762005-11-07 01:00:25 -0800807 ssize_t tlen = 0;
808 char *sep;
809
810 if (size>0) {
811 if (nfsd_serv)
NeilBrown6658d3a2006-10-02 02:17:46 -0700812 /* Cannot change versions without updating
813 * nfsd_serv->sv_xdrsize, and reallocing
814 * rq_argp and rq_resp
815 */
NeilBrown70c3b762005-11-07 01:00:25 -0800816 return -EBUSY;
817 if (buf[size-1] != '\n')
818 return -EINVAL;
819 buf[size-1] = 0;
820
821 vers = mesg;
822 len = qword_get(&mesg, vers, size);
823 if (len <= 0) return -EINVAL;
824 do {
825 sign = *vers;
826 if (sign == '+' || sign == '-')
Benny Halevy8daf2202009-04-03 08:28:59 +0300827 num = simple_strtol((vers+1), &minorp, 0);
NeilBrown70c3b762005-11-07 01:00:25 -0800828 else
Benny Halevy8daf2202009-04-03 08:28:59 +0300829 num = simple_strtol(vers, &minorp, 0);
830 if (*minorp == '.') {
831 if (num < 4)
832 return -EINVAL;
833 minor = simple_strtoul(minorp+1, NULL, 0);
834 if (minor == 0)
835 return -EINVAL;
836 if (nfsd_minorversion(minor, sign == '-' ?
837 NFSD_CLEAR : NFSD_SET) < 0)
838 return -EINVAL;
839 goto next;
840 }
NeilBrown70c3b762005-11-07 01:00:25 -0800841 switch(num) {
842 case 2:
843 case 3:
844 case 4:
NeilBrown6658d3a2006-10-02 02:17:46 -0700845 nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET);
NeilBrown70c3b762005-11-07 01:00:25 -0800846 break;
847 default:
848 return -EINVAL;
849 }
Benny Halevy8daf2202009-04-03 08:28:59 +0300850 next:
NeilBrown70c3b762005-11-07 01:00:25 -0800851 vers += len + 1;
NeilBrown70c3b762005-11-07 01:00:25 -0800852 } while ((len = qword_get(&mesg, vers, size)) > 0);
853 /* If all get turned off, turn them back on, as
854 * having no versions is BAD
855 */
NeilBrown6658d3a2006-10-02 02:17:46 -0700856 nfsd_reset_versions();
NeilBrown70c3b762005-11-07 01:00:25 -0800857 }
Chuck Lever261758b2009-04-23 19:33:18 -0400858
NeilBrown70c3b762005-11-07 01:00:25 -0800859 /* Now write current state into reply buffer */
860 len = 0;
861 sep = "";
Chuck Lever261758b2009-04-23 19:33:18 -0400862 remaining = SIMPLE_TRANSACTION_LIMIT;
NeilBrown70c3b762005-11-07 01:00:25 -0800863 for (num=2 ; num <= 4 ; num++)
NeilBrown6658d3a2006-10-02 02:17:46 -0700864 if (nfsd_vers(num, NFSD_AVAIL)) {
Chuck Lever261758b2009-04-23 19:33:18 -0400865 len = snprintf(buf, remaining, "%s%c%d", sep,
NeilBrown6658d3a2006-10-02 02:17:46 -0700866 nfsd_vers(num, NFSD_TEST)?'+':'-',
NeilBrown70c3b762005-11-07 01:00:25 -0800867 num);
868 sep = " ";
Chuck Lever261758b2009-04-23 19:33:18 -0400869
870 if (len > remaining)
871 break;
872 remaining -= len;
873 buf += len;
874 tlen += len;
NeilBrown70c3b762005-11-07 01:00:25 -0800875 }
Benny Halevy8daf2202009-04-03 08:28:59 +0300876 if (nfsd_vers(4, NFSD_AVAIL))
Chuck Lever261758b2009-04-23 19:33:18 -0400877 for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION;
878 minor++) {
879 len = snprintf(buf, remaining, " %c4.%u",
Benny Halevy8daf2202009-04-03 08:28:59 +0300880 (nfsd_vers(4, NFSD_TEST) &&
881 nfsd_minorversion(minor, NFSD_TEST)) ?
882 '+' : '-',
883 minor);
Chuck Lever261758b2009-04-23 19:33:18 -0400884
885 if (len > remaining)
886 break;
887 remaining -= len;
888 buf += len;
889 tlen += len;
890 }
891
892 len = snprintf(buf, remaining, "\n");
893 if (len > remaining)
894 return -EINVAL;
895 return tlen + len;
NeilBrown70c3b762005-11-07 01:00:25 -0800896}
897
Chuck Lever262a0982008-12-12 16:57:35 -0500898/**
899 * write_versions - Set or report the available NFS protocol versions
900 *
901 * Input:
902 * buf: ignored
903 * size: zero
904 * Output:
905 * On success: passed-in buffer filled with '\n'-terminated C
906 * string containing positive or negative integer
907 * values representing the current status of each
908 * protocol version;
909 * return code is the size in bytes of the string
910 * On error: return code is zero or a negative errno value
911 *
912 * OR
913 *
914 * Input:
915 * buf: C string containing whitespace-
916 * separated positive or negative
917 * integer values representing NFS
918 * protocol versions to enable ("+n")
919 * or disable ("-n")
920 * size: non-zero length of C string in @buf
921 * Output:
922 * On success: status of zero or more protocol versions has
923 * been updated; passed-in buffer filled with
924 * '\n'-terminated C string containing positive
925 * or negative integer values representing the
926 * current status of each protocol version;
927 * return code is the size in bytes of the string
928 * On error: return code is zero or a negative errno value
929 */
Jeff Layton3dd98a32008-06-10 08:40:36 -0400930static ssize_t write_versions(struct file *file, char *buf, size_t size)
931{
932 ssize_t rv;
933
934 mutex_lock(&nfsd_mutex);
935 rv = __write_versions(file, buf, size);
936 mutex_unlock(&nfsd_mutex);
937 return rv;
938}
939
Chuck Lever4cd5dc72009-04-23 19:31:32 -0400940/*
Chuck Lever0a5372d2009-04-23 19:32:10 -0400941 * Zero-length write. Return a list of NFSD's current listener
942 * transports.
943 */
944static ssize_t __write_ports_names(char *buf)
945{
946 if (nfsd_serv == NULL)
947 return 0;
Chuck Lever335c54b2009-04-23 19:32:25 -0400948 return svc_xprt_names(nfsd_serv, buf, SIMPLE_TRANSACTION_LIMIT);
Chuck Lever0a5372d2009-04-23 19:32:10 -0400949}
950
951/*
Chuck Lever0b7c2f62009-04-23 19:31:55 -0400952 * A single 'fd' number was written, in which case it must be for
953 * a socket of a supported family/protocol, and we use it as an
954 * nfsd listener.
955 */
956static ssize_t __write_ports_addfd(char *buf)
957{
958 char *mesg = buf;
959 int fd, err;
960
961 err = get_int(&mesg, &fd);
962 if (err != 0 || fd < 0)
963 return -EINVAL;
964
965 err = nfsd_create_serv();
966 if (err != 0)
967 return err;
968
Chuck Leverbfba9ab2009-04-23 19:32:33 -0400969 err = svc_addsock(nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT);
Jeff Layton78a8d7c2010-07-19 16:50:05 -0400970 if (err < 0) {
Jeff Layton78a8d7c2010-07-19 16:50:05 -0400971 svc_destroy(nfsd_serv);
972 return err;
973 }
Chuck Lever0b7c2f62009-04-23 19:31:55 -0400974
Chuck Leverea068ba2009-04-23 19:32:18 -0400975 /* Decrease the count, but don't shut down the service */
976 nfsd_serv->sv_nrthreads--;
977 return err;
Chuck Lever0b7c2f62009-04-23 19:31:55 -0400978}
979
980/*
Chuck Lever82d56592009-04-23 19:31:48 -0400981 * A '-' followed by the 'name' of a socket means we close the socket.
982 */
983static ssize_t __write_ports_delfd(char *buf)
984{
985 char *toclose;
986 int len = 0;
987
988 toclose = kstrdup(buf + 1, GFP_KERNEL);
989 if (toclose == NULL)
990 return -ENOMEM;
991
992 if (nfsd_serv != NULL)
Chuck Lever8435d342009-04-23 19:32:40 -0400993 len = svc_sock_names(nfsd_serv, buf,
994 SIMPLE_TRANSACTION_LIMIT, toclose);
Chuck Lever82d56592009-04-23 19:31:48 -0400995 kfree(toclose);
996 return len;
997}
998
999/*
Chuck Lever4eb68c22009-04-23 19:31:40 -04001000 * A transport listener is added by writing it's transport name and
1001 * a port number.
1002 */
1003static ssize_t __write_ports_addxprt(char *buf)
1004{
1005 char transport[16];
Chuck Lever37498292010-01-26 14:04:22 -05001006 struct svc_xprt *xprt;
Chuck Lever4eb68c22009-04-23 19:31:40 -04001007 int port, err;
1008
1009 if (sscanf(buf, "%15s %4u", transport, &port) != 2)
1010 return -EINVAL;
1011
Alexey Dobriyan4be929b2010-05-24 14:33:03 -07001012 if (port < 1 || port > USHRT_MAX)
Chuck Lever4eb68c22009-04-23 19:31:40 -04001013 return -EINVAL;
1014
1015 err = nfsd_create_serv();
1016 if (err != 0)
1017 return err;
1018
Pavel Emelyanovfc5d00b2010-09-29 16:03:50 +04001019 err = svc_create_xprt(nfsd_serv, transport, &init_net,
Chuck Lever4eb68c22009-04-23 19:31:40 -04001020 PF_INET, port, SVC_SOCK_ANONYMOUS);
Chuck Lever68717902010-01-26 14:04:13 -05001021 if (err < 0)
Chuck Lever37498292010-01-26 14:04:22 -05001022 goto out_err;
1023
Pavel Emelyanovfc5d00b2010-09-29 16:03:50 +04001024 err = svc_create_xprt(nfsd_serv, transport, &init_net,
Chuck Lever37498292010-01-26 14:04:22 -05001025 PF_INET6, port, SVC_SOCK_ANONYMOUS);
1026 if (err < 0 && err != -EAFNOSUPPORT)
1027 goto out_close;
Jeff Layton0cd14a02010-07-19 16:50:06 -04001028
1029 /* Decrease the count, but don't shut down the service */
1030 nfsd_serv->sv_nrthreads--;
Chuck Lever4eb68c22009-04-23 19:31:40 -04001031 return 0;
Chuck Lever37498292010-01-26 14:04:22 -05001032out_close:
1033 xprt = svc_find_xprt(nfsd_serv, transport, PF_INET, port);
1034 if (xprt != NULL) {
1035 svc_close_xprt(xprt);
1036 svc_xprt_put(xprt);
1037 }
1038out_err:
Jeff Layton0cd14a02010-07-19 16:50:06 -04001039 svc_destroy(nfsd_serv);
Chuck Lever37498292010-01-26 14:04:22 -05001040 return err;
Chuck Lever4eb68c22009-04-23 19:31:40 -04001041}
1042
1043/*
Chuck Lever4cd5dc72009-04-23 19:31:32 -04001044 * A transport listener is removed by writing a "-", it's transport
1045 * name, and it's port number.
1046 */
1047static ssize_t __write_ports_delxprt(char *buf)
1048{
1049 struct svc_xprt *xprt;
1050 char transport[16];
1051 int port;
1052
1053 if (sscanf(&buf[1], "%15s %4u", transport, &port) != 2)
1054 return -EINVAL;
1055
Alexey Dobriyan4be929b2010-05-24 14:33:03 -07001056 if (port < 1 || port > USHRT_MAX || nfsd_serv == NULL)
Chuck Lever4cd5dc72009-04-23 19:31:32 -04001057 return -EINVAL;
1058
1059 xprt = svc_find_xprt(nfsd_serv, transport, AF_UNSPEC, port);
1060 if (xprt == NULL)
1061 return -ENOTCONN;
1062
1063 svc_close_xprt(xprt);
1064 svc_xprt_put(xprt);
1065 return 0;
1066}
1067
Neil Brownbedbdd82008-06-10 08:40:35 -04001068static ssize_t __write_ports(struct file *file, char *buf, size_t size)
NeilBrown80212d52006-10-02 02:17:47 -07001069{
Chuck Lever0a5372d2009-04-23 19:32:10 -04001070 if (size == 0)
1071 return __write_ports_names(buf);
Chuck Lever0b7c2f62009-04-23 19:31:55 -04001072
1073 if (isdigit(buf[0]))
1074 return __write_ports_addfd(buf);
Chuck Lever82d56592009-04-23 19:31:48 -04001075
1076 if (buf[0] == '-' && isdigit(buf[1]))
1077 return __write_ports_delfd(buf);
Chuck Lever4eb68c22009-04-23 19:31:40 -04001078
1079 if (isalpha(buf[0]))
1080 return __write_ports_addxprt(buf);
Chuck Lever4cd5dc72009-04-23 19:31:32 -04001081
1082 if (buf[0] == '-' && isalpha(buf[1]))
1083 return __write_ports_delxprt(buf);
1084
NeilBrownb41b66d2006-10-02 02:17:48 -07001085 return -EINVAL;
NeilBrown80212d52006-10-02 02:17:47 -07001086}
1087
Chuck Lever262a0982008-12-12 16:57:35 -05001088/**
1089 * write_ports - Pass a socket file descriptor or transport name to listen on
1090 *
1091 * Input:
1092 * buf: ignored
1093 * size: zero
1094 * Output:
1095 * On success: passed-in buffer filled with a '\n'-terminated C
1096 * string containing a whitespace-separated list of
1097 * named NFSD listeners;
1098 * return code is the size in bytes of the string
1099 * On error: return code is zero or a negative errno value
1100 *
1101 * OR
1102 *
1103 * Input:
1104 * buf: C string containing an unsigned
1105 * integer value representing a bound
1106 * but unconnected socket that is to be
Chuck Leverc71206a2009-04-23 19:32:03 -04001107 * used as an NFSD listener; listen(3)
1108 * must be called for a SOCK_STREAM
1109 * socket, otherwise it is ignored
Chuck Lever262a0982008-12-12 16:57:35 -05001110 * size: non-zero length of C string in @buf
1111 * Output:
1112 * On success: NFS service is started;
1113 * passed-in buffer filled with a '\n'-terminated C
1114 * string containing a unique alphanumeric name of
1115 * the listener;
1116 * return code is the size in bytes of the string
1117 * On error: return code is a negative errno value
1118 *
1119 * OR
1120 *
1121 * Input:
1122 * buf: C string containing a "-" followed
1123 * by an integer value representing a
1124 * previously passed in socket file
1125 * descriptor
1126 * size: non-zero length of C string in @buf
1127 * Output:
1128 * On success: NFS service no longer listens on that socket;
1129 * passed-in buffer filled with a '\n'-terminated C
1130 * string containing a unique name of the listener;
1131 * return code is the size in bytes of the string
1132 * On error: return code is a negative errno value
1133 *
1134 * OR
1135 *
1136 * Input:
1137 * buf: C string containing a transport
1138 * name and an unsigned integer value
1139 * representing the port to listen on,
1140 * separated by whitespace
1141 * size: non-zero length of C string in @buf
1142 * Output:
1143 * On success: returns zero; NFS service is started
1144 * On error: return code is a negative errno value
1145 *
1146 * OR
1147 *
1148 * Input:
1149 * buf: C string containing a "-" followed
1150 * by a transport name and an unsigned
1151 * integer value representing the port
1152 * to listen on, separated by whitespace
1153 * size: non-zero length of C string in @buf
1154 * Output:
1155 * On success: returns zero; NFS service no longer listens
1156 * on that transport
1157 * On error: return code is a negative errno value
1158 */
Neil Brownbedbdd82008-06-10 08:40:35 -04001159static ssize_t write_ports(struct file *file, char *buf, size_t size)
1160{
1161 ssize_t rv;
Jeff Layton3dd98a32008-06-10 08:40:36 -04001162
Neil Brownbedbdd82008-06-10 08:40:35 -04001163 mutex_lock(&nfsd_mutex);
1164 rv = __write_ports(file, buf, size);
1165 mutex_unlock(&nfsd_mutex);
1166 return rv;
1167}
1168
1169
NeilBrown596bbe52006-10-04 02:15:48 -07001170int nfsd_max_blksize;
1171
Chuck Lever262a0982008-12-12 16:57:35 -05001172/**
1173 * write_maxblksize - Set or report the current NFS blksize
1174 *
1175 * Input:
1176 * buf: ignored
1177 * size: zero
1178 *
1179 * OR
1180 *
1181 * Input:
1182 * buf: C string containing an unsigned
1183 * integer value representing the new
1184 * NFS blksize
1185 * size: non-zero length of C string in @buf
1186 * Output:
1187 * On success: passed-in buffer filled with '\n'-terminated C string
1188 * containing numeric value of the current NFS blksize
1189 * setting;
1190 * return code is the size in bytes of the string
1191 * On error: return code is zero or a negative errno value
1192 */
NeilBrown596bbe52006-10-04 02:15:48 -07001193static ssize_t write_maxblksize(struct file *file, char *buf, size_t size)
1194{
1195 char *mesg = buf;
1196 if (size > 0) {
1197 int bsize;
1198 int rv = get_int(&mesg, &bsize);
1199 if (rv)
1200 return rv;
1201 /* force bsize into allowed range and
1202 * required alignment.
1203 */
1204 if (bsize < 1024)
1205 bsize = 1024;
1206 if (bsize > NFSSVC_MAXBLKSIZE)
1207 bsize = NFSSVC_MAXBLKSIZE;
1208 bsize &= ~(1024-1);
Neil Brownbedbdd82008-06-10 08:40:35 -04001209 mutex_lock(&nfsd_mutex);
J. Bruce Fields7fa53cc2010-08-06 18:00:33 -04001210 if (nfsd_serv) {
Neil Brownbedbdd82008-06-10 08:40:35 -04001211 mutex_unlock(&nfsd_mutex);
NeilBrown596bbe52006-10-04 02:15:48 -07001212 return -EBUSY;
1213 }
1214 nfsd_max_blksize = bsize;
Neil Brownbedbdd82008-06-10 08:40:35 -04001215 mutex_unlock(&nfsd_mutex);
NeilBrown596bbe52006-10-04 02:15:48 -07001216 }
Chuck Levere06b6402009-04-23 19:33:25 -04001217
1218 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n",
1219 nfsd_max_blksize);
NeilBrown596bbe52006-10-04 02:15:48 -07001220}
1221
NeilBrown70c3b762005-11-07 01:00:25 -08001222#ifdef CONFIG_NFSD_V4
J. Bruce Fieldsf0135742010-03-01 19:32:36 -05001223static ssize_t __nfsd4_write_time(struct file *file, char *buf, size_t size, time_t *time)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001224{
Linus Torvalds1da177e2005-04-16 15:20:36 -07001225 char *mesg = buf;
J. Bruce Fieldsf0135742010-03-01 19:32:36 -05001226 int rv, i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001227
1228 if (size > 0) {
Jeff Layton3dd98a32008-06-10 08:40:36 -04001229 if (nfsd_serv)
1230 return -EBUSY;
J. Bruce Fieldsf0135742010-03-01 19:32:36 -05001231 rv = get_int(&mesg, &i);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001232 if (rv)
1233 return rv;
J. Bruce Fieldse7b184f2010-03-02 11:18:40 -05001234 /*
1235 * Some sanity checking. We don't have a reason for
1236 * these particular numbers, but problems with the
1237 * extremes are:
1238 * - Too short: the briefest network outage may
1239 * cause clients to lose all their locks. Also,
1240 * the frequent polling may be wasteful.
1241 * - Too long: do you really want reboot recovery
1242 * to take more than an hour? Or to make other
1243 * clients wait an hour before being able to
1244 * revoke a dead client's locks?
1245 */
J. Bruce Fieldsf0135742010-03-01 19:32:36 -05001246 if (i < 10 || i > 3600)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001247 return -EINVAL;
J. Bruce Fieldsf0135742010-03-01 19:32:36 -05001248 *time = i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001249 }
Chuck Levere06b6402009-04-23 19:33:25 -04001250
J. Bruce Fieldsf0135742010-03-01 19:32:36 -05001251 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%ld\n", *time);
1252}
1253
1254static ssize_t nfsd4_write_time(struct file *file, char *buf, size_t size, time_t *time)
1255{
1256 ssize_t rv;
1257
1258 mutex_lock(&nfsd_mutex);
1259 rv = __nfsd4_write_time(file, buf, size, time);
1260 mutex_unlock(&nfsd_mutex);
1261 return rv;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262}
1263
Chuck Lever262a0982008-12-12 16:57:35 -05001264/**
1265 * write_leasetime - Set or report the current NFSv4 lease time
1266 *
1267 * Input:
1268 * buf: ignored
1269 * size: zero
1270 *
1271 * OR
1272 *
1273 * Input:
1274 * buf: C string containing an unsigned
1275 * integer value representing the new
1276 * NFSv4 lease expiry time
1277 * size: non-zero length of C string in @buf
1278 * Output:
1279 * On success: passed-in buffer filled with '\n'-terminated C
1280 * string containing unsigned integer value of the
1281 * current lease expiry time;
1282 * return code is the size in bytes of the string
1283 * On error: return code is zero or a negative errno value
1284 */
Jeff Layton3dd98a32008-06-10 08:40:36 -04001285static ssize_t write_leasetime(struct file *file, char *buf, size_t size)
1286{
J. Bruce Fieldsf0135742010-03-01 19:32:36 -05001287 return nfsd4_write_time(file, buf, size, &nfsd4_lease);
Jeff Layton3dd98a32008-06-10 08:40:36 -04001288}
1289
J. Bruce Fieldsefc4bb4f2010-03-02 11:04:06 -05001290/**
1291 * write_gracetime - Set or report current NFSv4 grace period time
1292 *
1293 * As above, but sets the time of the NFSv4 grace period.
1294 *
1295 * Note this should never be set to less than the *previous*
1296 * lease-period time, but we don't try to enforce this. (In the common
1297 * case (a new boot), we don't know what the previous lease time was
1298 * anyway.)
1299 */
1300static ssize_t write_gracetime(struct file *file, char *buf, size_t size)
1301{
1302 return nfsd4_write_time(file, buf, size, &nfsd4_grace);
1303}
1304
Jeff Layton3dd98a32008-06-10 08:40:36 -04001305extern char *nfs4_recoverydir(void);
1306
1307static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size)
NeilBrown0964a3d2005-06-23 22:04:32 -07001308{
1309 char *mesg = buf;
1310 char *recdir;
1311 int len, status;
1312
Jeff Layton3dd98a32008-06-10 08:40:36 -04001313 if (size > 0) {
1314 if (nfsd_serv)
1315 return -EBUSY;
1316 if (size > PATH_MAX || buf[size-1] != '\n')
1317 return -EINVAL;
1318 buf[size-1] = 0;
NeilBrown0964a3d2005-06-23 22:04:32 -07001319
Jeff Layton3dd98a32008-06-10 08:40:36 -04001320 recdir = mesg;
1321 len = qword_get(&mesg, recdir, size);
1322 if (len <= 0)
1323 return -EINVAL;
NeilBrown0964a3d2005-06-23 22:04:32 -07001324
Jeff Layton3dd98a32008-06-10 08:40:36 -04001325 status = nfs4_reset_recoverydir(recdir);
Andi Kleen69049962010-07-20 15:24:27 -07001326 if (status)
1327 return status;
Jeff Layton3dd98a32008-06-10 08:40:36 -04001328 }
Chuck Lever3d72ab82009-04-23 19:33:10 -04001329
1330 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s\n",
1331 nfs4_recoverydir());
NeilBrown0964a3d2005-06-23 22:04:32 -07001332}
Jeff Layton3dd98a32008-06-10 08:40:36 -04001333
Chuck Lever262a0982008-12-12 16:57:35 -05001334/**
1335 * write_recoverydir - Set or report the pathname of the recovery directory
1336 *
1337 * Input:
1338 * buf: ignored
1339 * size: zero
1340 *
1341 * OR
1342 *
1343 * Input:
1344 * buf: C string containing the pathname
1345 * of the directory on a local file
1346 * system containing permanent NFSv4
1347 * recovery data
1348 * size: non-zero length of C string in @buf
1349 * Output:
1350 * On success: passed-in buffer filled with '\n'-terminated C string
1351 * containing the current recovery pathname setting;
1352 * return code is the size in bytes of the string
1353 * On error: return code is zero or a negative errno value
1354 */
Jeff Layton3dd98a32008-06-10 08:40:36 -04001355static ssize_t write_recoverydir(struct file *file, char *buf, size_t size)
1356{
1357 ssize_t rv;
1358
1359 mutex_lock(&nfsd_mutex);
1360 rv = __write_recoverydir(file, buf, size);
1361 mutex_unlock(&nfsd_mutex);
1362 return rv;
1363}
1364
NeilBrown70c3b762005-11-07 01:00:25 -08001365#endif
NeilBrown0964a3d2005-06-23 22:04:32 -07001366
Linus Torvalds1da177e2005-04-16 15:20:36 -07001367/*----------------------------------------------------------------------------*/
1368/*
1369 * populating the filesystem.
1370 */
1371
1372static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
1373{
1374 static struct tree_descr nfsd_files[] = {
NeilBrown1e140562010-09-22 12:55:07 +10001375#ifdef CONFIG_NFSD_DEPRECATED
Linus Torvalds1da177e2005-04-16 15:20:36 -07001376 [NFSD_Svc] = {".svc", &transaction_ops, S_IWUSR},
1377 [NFSD_Add] = {".add", &transaction_ops, S_IWUSR},
1378 [NFSD_Del] = {".del", &transaction_ops, S_IWUSR},
1379 [NFSD_Export] = {".export", &transaction_ops, S_IWUSR},
1380 [NFSD_Unexport] = {".unexport", &transaction_ops, S_IWUSR},
1381 [NFSD_Getfd] = {".getfd", &transaction_ops, S_IWUSR|S_IRUSR},
1382 [NFSD_Getfs] = {".getfs", &transaction_ops, S_IWUSR|S_IRUSR},
NeilBrown1e140562010-09-22 12:55:07 +10001383#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001384 [NFSD_List] = {"exports", &exports_operations, S_IRUGO},
J. Bruce Fieldse8e87532009-12-14 12:53:32 -05001385 [NFSD_Export_features] = {"export_features",
1386 &export_features_operations, S_IRUGO},
Wendy Cheng4373ea82008-01-17 11:10:12 -05001387 [NFSD_FO_UnlockIP] = {"unlock_ip",
1388 &transaction_ops, S_IWUSR|S_IRUSR},
Wendy Cheng17efa372008-01-17 11:10:12 -05001389 [NFSD_FO_UnlockFS] = {"unlock_filesystem",
1390 &transaction_ops, S_IWUSR|S_IRUSR},
Linus Torvalds1da177e2005-04-16 15:20:36 -07001391 [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR},
1392 [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR},
Greg Bankseed29652006-10-02 02:18:02 -07001393 [NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR},
Greg Banks03cf6c92009-01-13 21:26:36 +11001394 [NFSD_Pool_Stats] = {"pool_stats", &pool_stats_operations, S_IRUGO},
NeilBrown70c3b762005-11-07 01:00:25 -08001395 [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR},
NeilBrown80212d52006-10-02 02:17:47 -07001396 [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO},
NeilBrown596bbe52006-10-04 02:15:48 -07001397 [NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO},
Linus Torvalds1da177e2005-04-16 15:20:36 -07001398#ifdef CONFIG_NFSD_V4
1399 [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR},
J. Bruce Fieldsefc4bb4f2010-03-02 11:04:06 -05001400 [NFSD_Gracetime] = {"nfsv4gracetime", &transaction_ops, S_IWUSR|S_IRUSR},
NeilBrown0964a3d2005-06-23 22:04:32 -07001401 [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR},
Linus Torvalds1da177e2005-04-16 15:20:36 -07001402#endif
1403 /* last one */ {""}
1404 };
1405 return simple_fill_super(sb, 0x6e667364, nfsd_files);
1406}
1407
Al Virofc14f2f2010-07-25 01:48:30 +04001408static struct dentry *nfsd_mount(struct file_system_type *fs_type,
1409 int flags, const char *dev_name, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001410{
Al Virofc14f2f2010-07-25 01:48:30 +04001411 return mount_single(fs_type, flags, data, nfsd_fill_super);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001412}
1413
1414static struct file_system_type nfsd_fs_type = {
1415 .owner = THIS_MODULE,
1416 .name = "nfsd",
Al Virofc14f2f2010-07-25 01:48:30 +04001417 .mount = nfsd_mount,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001418 .kill_sb = kill_litter_super,
1419};
1420
J. Bruce Fieldse331f602007-11-12 17:32:21 -05001421#ifdef CONFIG_PROC_FS
1422static int create_proc_exports_entry(void)
1423{
1424 struct proc_dir_entry *entry;
1425
1426 entry = proc_mkdir("fs/nfs", NULL);
1427 if (!entry)
1428 return -ENOMEM;
Denis V. Lunev9ef2db22008-04-29 01:02:04 -07001429 entry = proc_create("exports", 0, entry, &exports_operations);
J. Bruce Fieldse331f602007-11-12 17:32:21 -05001430 if (!entry)
1431 return -ENOMEM;
J. Bruce Fieldse331f602007-11-12 17:32:21 -05001432 return 0;
1433}
1434#else /* CONFIG_PROC_FS */
1435static int create_proc_exports_entry(void)
1436{
1437 return 0;
1438}
1439#endif
1440
Linus Torvalds1da177e2005-04-16 15:20:36 -07001441static int __init init_nfsd(void)
1442{
1443 int retval;
1444 printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n");
1445
J. Bruce Fieldse8ff2a82007-08-01 15:30:59 -04001446 retval = nfs4_state_init(); /* nfs4 locking state */
1447 if (retval)
1448 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001449 nfsd_stat_init(); /* Statistics */
J. Bruce Fieldsd5c34282007-11-09 14:10:56 -05001450 retval = nfsd_reply_cache_init();
1451 if (retval)
1452 goto out_free_stat;
J. Bruce Fieldsdbf847e2007-11-08 17:20:34 -05001453 retval = nfsd_export_init();
1454 if (retval)
1455 goto out_free_cache;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001456 nfsd_lockd_init(); /* lockd->nfsd callbacks */
J. Bruce Fieldsdbf847e2007-11-08 17:20:34 -05001457 retval = nfsd_idmap_init();
1458 if (retval)
1459 goto out_free_lockd;
J. Bruce Fieldse331f602007-11-12 17:32:21 -05001460 retval = create_proc_exports_entry();
1461 if (retval)
1462 goto out_free_idmap;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001463 retval = register_filesystem(&nfsd_fs_type);
J. Bruce Fields26808d32007-11-09 13:44:06 -05001464 if (retval)
1465 goto out_free_all;
1466 return 0;
1467out_free_all:
J. Bruce Fields26808d32007-11-09 13:44:06 -05001468 remove_proc_entry("fs/nfs/exports", NULL);
1469 remove_proc_entry("fs/nfs", NULL);
J. Bruce Fieldse331f602007-11-12 17:32:21 -05001470out_free_idmap:
J. Bruce Fieldsdbf847e2007-11-08 17:20:34 -05001471 nfsd_idmap_shutdown();
1472out_free_lockd:
J. Bruce Fields26808d32007-11-09 13:44:06 -05001473 nfsd_lockd_shutdown();
J. Bruce Fieldse331f602007-11-12 17:32:21 -05001474 nfsd_export_shutdown();
J. Bruce Fieldsdbf847e2007-11-08 17:20:34 -05001475out_free_cache:
J. Bruce Fieldse331f602007-11-12 17:32:21 -05001476 nfsd_reply_cache_shutdown();
J. Bruce Fieldsd5c34282007-11-09 14:10:56 -05001477out_free_stat:
1478 nfsd_stat_shutdown();
J. Bruce Fields26808d32007-11-09 13:44:06 -05001479 nfsd4_free_slabs();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001480 return retval;
1481}
1482
1483static void __exit exit_nfsd(void)
1484{
1485 nfsd_export_shutdown();
J. Bruce Fieldsd5c34282007-11-09 14:10:56 -05001486 nfsd_reply_cache_shutdown();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001487 remove_proc_entry("fs/nfs/exports", NULL);
1488 remove_proc_entry("fs/nfs", NULL);
1489 nfsd_stat_shutdown();
1490 nfsd_lockd_shutdown();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001491 nfsd_idmap_shutdown();
J. Bruce Fieldse8ff2a82007-08-01 15:30:59 -04001492 nfsd4_free_slabs();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001493 unregister_filesystem(&nfsd_fs_type);
1494}
1495
1496MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>");
1497MODULE_LICENSE("GPL");
1498module_init(init_nfsd)
1499module_exit(exit_nfsd)