2 * Syscall interface to knfsd.
4 * Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
7 #include <linux/slab.h>
8 #include <linux/namei.h>
9 #include <linux/ctype.h>
11 #include <linux/sunrpc/svcsock.h>
12 #include <linux/lockd/lockd.h>
13 #include <linux/sunrpc/clnt.h>
14 #include <linux/sunrpc/gss_api.h>
15 #include <linux/sunrpc/gss_krb5_enctypes.h>
16 #include <linux/sunrpc/rpc_pipe_fs.h>
17 #include <linux/module.h>
22 #include "fault_inject.h"
26 * We have a single directory with several nodes in it.
41 NFSD_SupportedEnctypes,
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
54 * write() for these nodes.
56 static ssize_t write_filehandle(struct file *file, char *buf, size_t size);
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);
59 static ssize_t write_threads(struct file *file, char *buf, size_t size);
60 static ssize_t write_pool_threads(struct file *file, char *buf, size_t size);
61 static ssize_t write_versions(struct file *file, char *buf, size_t size);
62 static ssize_t write_ports(struct file *file, char *buf, size_t size);
63 static ssize_t write_maxblksize(struct file *file, char *buf, size_t size);
65 static ssize_t write_leasetime(struct file *file, char *buf, size_t size);
66 static ssize_t write_gracetime(struct file *file, char *buf, size_t size);
67 static ssize_t write_recoverydir(struct file *file, char *buf, size_t size);
70 static ssize_t (*write_op[])(struct file *, char *, size_t) = {
71 [NFSD_Fh] = write_filehandle,
72 [NFSD_FO_UnlockIP] = write_unlock_ip,
73 [NFSD_FO_UnlockFS] = write_unlock_fs,
74 [NFSD_Threads] = write_threads,
75 [NFSD_Pool_Threads] = write_pool_threads,
76 [NFSD_Versions] = write_versions,
77 [NFSD_Ports] = write_ports,
78 [NFSD_MaxBlkSize] = write_maxblksize,
80 [NFSD_Leasetime] = write_leasetime,
81 [NFSD_Gracetime] = write_gracetime,
82 [NFSD_RecoveryDir] = write_recoverydir,
86 static ssize_t nfsctl_transaction_write(struct file *file, const char __user *buf, size_t size, loff_t *pos)
88 ino_t ino = file->f_path.dentry->d_inode->i_ino;
92 if (ino >= ARRAY_SIZE(write_op) || !write_op[ino])
95 data = simple_transaction_get(file, buf, size);
99 rv = write_op[ino](file, data, size);
101 simple_transaction_set(file, rv);
107 static ssize_t nfsctl_transaction_read(struct file *file, char __user *buf, size_t size, loff_t *pos)
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
114 ssize_t rv = nfsctl_transaction_write(file, buf, 0, pos);
118 return simple_transaction_read(file, buf, size, pos);
121 static const struct file_operations transaction_ops = {
122 .write = nfsctl_transaction_write,
123 .read = nfsctl_transaction_read,
124 .release = simple_transaction_release,
125 .llseek = default_llseek,
128 static int exports_open(struct inode *inode, struct file *file)
131 struct seq_file *seq;
133 err = seq_open(file, &nfs_exports_op);
137 seq = file->private_data;
138 seq->private = &svc_export_cache;
142 static const struct file_operations exports_operations = {
143 .open = exports_open,
146 .release = seq_release,
147 .owner = THIS_MODULE,
150 static int export_features_show(struct seq_file *m, void *v)
152 seq_printf(m, "0x%x 0x%x\n", NFSEXP_ALLFLAGS, NFSEXP_SECINFO_FLAGS);
156 static int export_features_open(struct inode *inode, struct file *file)
158 return single_open(file, export_features_show, NULL);
161 static struct file_operations export_features_operations = {
162 .open = export_features_open,
165 .release = single_release,
168 #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE)
169 static int supported_enctypes_show(struct seq_file *m, void *v)
171 seq_printf(m, KRB5_SUPPORTED_ENCTYPES);
175 static int supported_enctypes_open(struct inode *inode, struct file *file)
177 return single_open(file, supported_enctypes_show, NULL);
180 static struct file_operations supported_enctypes_ops = {
181 .open = supported_enctypes_open,
184 .release = single_release,
186 #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */
188 extern int nfsd_pool_stats_open(struct inode *inode, struct file *file);
189 extern int nfsd_pool_stats_release(struct inode *inode, struct file *file);
191 static const struct file_operations pool_stats_operations = {
192 .open = nfsd_pool_stats_open,
195 .release = nfsd_pool_stats_release,
196 .owner = THIS_MODULE,
199 /*----------------------------------------------------------------------------*/
201 * payload - write methods
206 * write_unlock_ip - Release all locks used by a client
211 * buf: '\n'-terminated C string containing a
212 * presentation format IP address
213 * size: length of C string in @buf
215 * On success: returns zero if all specified locks were released;
216 * returns one if one or more locks were not released
217 * On error: return code is negative errno value
219 static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size)
221 struct sockaddr_storage address;
222 struct sockaddr *sap = (struct sockaddr *)&address;
223 size_t salen = sizeof(address);
230 if (buf[size-1] != '\n')
234 if (qword_get(&buf, fo_path, size) < 0)
237 if (rpc_pton(&init_net, fo_path, size, sap, salen) == 0)
240 return nlmsvc_unlock_all_by_ip(sap);
244 * write_unlock_fs - Release all locks on a local file system
249 * buf: '\n'-terminated C string containing the
250 * absolute pathname of a local file system
251 * size: length of C string in @buf
253 * On success: returns zero if all specified locks were released;
254 * returns one if one or more locks were not released
255 * On error: return code is negative errno value
257 static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size)
267 if (buf[size-1] != '\n')
271 if (qword_get(&buf, fo_path, size) < 0)
274 error = kern_path(fo_path, 0, &path);
279 * XXX: Needs better sanity checking. Otherwise we could end up
280 * releasing locks on the wrong file system.
283 * 1. Does the path refer to a directory?
284 * 2. Is that directory a mount point, or
285 * 3. Is that directory the root of an exported file system?
287 error = nlmsvc_unlock_all_by_sb(path.dentry->d_sb);
294 * write_filehandle - Get a variable-length NFS file handle by path
296 * On input, the buffer contains a '\n'-terminated C string comprised of
297 * three alphanumeric words separated by whitespace. The string may
298 * contain escape sequences.
302 * domain: client domain name
303 * path: export pathname
304 * maxsize: numeric maximum size of
306 * size: length of C string in @buf
308 * On success: passed-in buffer filled with '\n'-terminated C
309 * string containing a ASCII hex text version
310 * of the NFS file handle;
311 * return code is the size in bytes of the string
312 * On error: return code is negative errno value
314 static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
317 int uninitialized_var(maxsize);
320 struct auth_domain *dom;
326 if (buf[size-1] != '\n')
331 len = qword_get(&mesg, dname, size);
336 len = qword_get(&mesg, path, size);
340 len = get_int(&mesg, &maxsize);
344 if (maxsize < NFS_FHSIZE)
346 if (maxsize > NFS3_FHSIZE)
347 maxsize = NFS3_FHSIZE;
349 if (qword_get(&mesg, mesg, size)>0)
352 /* we have all the words, they are in buf.. */
353 dom = unix_domain_find(dname);
357 len = exp_rootfh(dom, path, &fh, maxsize);
358 auth_domain_put(dom);
363 len = SIMPLE_TRANSACTION_LIMIT;
364 qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size);
370 * write_threads - Start NFSD, or report the current number of running threads
376 * On success: passed-in buffer filled with '\n'-terminated C
377 * string numeric value representing the number of
378 * running NFSD threads;
379 * return code is the size in bytes of the string
380 * On error: return code is zero
385 * buf: C string containing an unsigned
386 * integer value representing the
387 * number of NFSD threads to start
388 * size: non-zero length of C string in @buf
390 * On success: NFS service is started;
391 * passed-in buffer filled with '\n'-terminated C
392 * string numeric value representing the number of
393 * running NFSD threads;
394 * return code is the size in bytes of the string
395 * On error: return code is zero or a negative errno value
397 static ssize_t write_threads(struct file *file, char *buf, size_t size)
403 rv = get_int(&mesg, &newthreads);
408 rv = nfsd_svc(NFS_PORT, newthreads);
412 rv = nfsd_nrthreads();
414 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", rv);
418 * write_pool_threads - Set or report the current number of threads per pool
427 * buf: C string containing whitespace-
428 * separated unsigned integer values
429 * representing the number of NFSD
430 * threads to start in each pool
431 * size: non-zero length of C string in @buf
433 * On success: passed-in buffer filled with '\n'-terminated C
434 * string containing integer values representing the
435 * number of NFSD threads in each pool;
436 * return code is the size in bytes of the string
437 * On error: return code is zero or a negative errno value
439 static ssize_t write_pool_threads(struct file *file, char *buf, size_t size)
441 /* if size > 0, look for an array of number of threads per node
442 * and apply them then write out number of threads per node as reply
451 mutex_lock(&nfsd_mutex);
452 npools = nfsd_nrpools();
455 * NFS is shut down. The admin can start it by
456 * writing to the threads file but NOT the pool_threads
457 * file, sorry. Report zero threads.
459 mutex_unlock(&nfsd_mutex);
464 nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL);
466 if (nthreads == NULL)
470 for (i = 0; i < npools; i++) {
471 rv = get_int(&mesg, &nthreads[i]);
473 break; /* fewer numbers than pools */
475 goto out_free; /* syntax error */
480 rv = nfsd_set_nrthreads(i, nthreads);
485 rv = nfsd_get_nrthreads(npools, nthreads);
490 size = SIMPLE_TRANSACTION_LIMIT;
491 for (i = 0; i < npools && size > 0; i++) {
492 snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? '\n' : ' '));
500 mutex_unlock(&nfsd_mutex);
504 static ssize_t __write_versions(struct file *file, char *buf, size_t size)
507 char *vers, *minorp, sign;
508 int len, num, remaining;
515 /* Cannot change versions without updating
516 * nfsd_serv->sv_xdrsize, and reallocing
517 * rq_argp and rq_resp
520 if (buf[size-1] != '\n')
525 len = qword_get(&mesg, vers, size);
526 if (len <= 0) return -EINVAL;
529 if (sign == '+' || sign == '-')
530 num = simple_strtol((vers+1), &minorp, 0);
532 num = simple_strtol(vers, &minorp, 0);
533 if (*minorp == '.') {
536 minor = simple_strtoul(minorp+1, NULL, 0);
539 if (nfsd_minorversion(minor, sign == '-' ?
540 NFSD_CLEAR : NFSD_SET) < 0)
548 nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET);
555 } while ((len = qword_get(&mesg, vers, size)) > 0);
556 /* If all get turned off, turn them back on, as
557 * having no versions is BAD
559 nfsd_reset_versions();
562 /* Now write current state into reply buffer */
565 remaining = SIMPLE_TRANSACTION_LIMIT;
566 for (num=2 ; num <= 4 ; num++)
567 if (nfsd_vers(num, NFSD_AVAIL)) {
568 len = snprintf(buf, remaining, "%s%c%d", sep,
569 nfsd_vers(num, NFSD_TEST)?'+':'-',
579 if (nfsd_vers(4, NFSD_AVAIL))
580 for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION;
582 len = snprintf(buf, remaining, " %c4.%u",
583 (nfsd_vers(4, NFSD_TEST) &&
584 nfsd_minorversion(minor, NFSD_TEST)) ?
595 len = snprintf(buf, remaining, "\n");
602 * write_versions - Set or report the available NFS protocol versions
608 * On success: passed-in buffer filled with '\n'-terminated C
609 * string containing positive or negative integer
610 * values representing the current status of each
612 * return code is the size in bytes of the string
613 * On error: return code is zero or a negative errno value
618 * buf: C string containing whitespace-
619 * separated positive or negative
620 * integer values representing NFS
621 * protocol versions to enable ("+n")
623 * size: non-zero length of C string in @buf
625 * On success: status of zero or more protocol versions has
626 * been updated; passed-in buffer filled with
627 * '\n'-terminated C string containing positive
628 * or negative integer values representing the
629 * current status of each protocol version;
630 * return code is the size in bytes of the string
631 * On error: return code is zero or a negative errno value
633 static ssize_t write_versions(struct file *file, char *buf, size_t size)
637 mutex_lock(&nfsd_mutex);
638 rv = __write_versions(file, buf, size);
639 mutex_unlock(&nfsd_mutex);
644 * Zero-length write. Return a list of NFSD's current listener
647 static ssize_t __write_ports_names(char *buf)
649 if (nfsd_serv == NULL)
651 return svc_xprt_names(nfsd_serv, buf, SIMPLE_TRANSACTION_LIMIT);
655 * A single 'fd' number was written, in which case it must be for
656 * a socket of a supported family/protocol, and we use it as an
659 static ssize_t __write_ports_addfd(char *buf)
664 err = get_int(&mesg, &fd);
665 if (err != 0 || fd < 0)
668 err = nfsd_create_serv();
672 err = svc_addsock(nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT);
674 svc_destroy(nfsd_serv);
678 /* Decrease the count, but don't shut down the service */
679 nfsd_serv->sv_nrthreads--;
684 * A '-' followed by the 'name' of a socket means we close the socket.
686 static ssize_t __write_ports_delfd(char *buf)
691 toclose = kstrdup(buf + 1, GFP_KERNEL);
695 if (nfsd_serv != NULL)
696 len = svc_sock_names(nfsd_serv, buf,
697 SIMPLE_TRANSACTION_LIMIT, toclose);
703 * A transport listener is added by writing it's transport name and
706 static ssize_t __write_ports_addxprt(char *buf)
709 struct svc_xprt *xprt;
712 if (sscanf(buf, "%15s %4u", transport, &port) != 2)
715 if (port < 1 || port > USHRT_MAX)
718 err = nfsd_create_serv();
722 err = svc_create_xprt(nfsd_serv, transport, &init_net,
723 PF_INET, port, SVC_SOCK_ANONYMOUS);
727 err = svc_create_xprt(nfsd_serv, transport, &init_net,
728 PF_INET6, port, SVC_SOCK_ANONYMOUS);
729 if (err < 0 && err != -EAFNOSUPPORT)
732 /* Decrease the count, but don't shut down the service */
733 nfsd_serv->sv_nrthreads--;
736 xprt = svc_find_xprt(nfsd_serv, transport, &init_net, PF_INET, port);
738 svc_close_xprt(xprt);
742 svc_destroy(nfsd_serv);
747 * A transport listener is removed by writing a "-", it's transport
748 * name, and it's port number.
750 static ssize_t __write_ports_delxprt(char *buf)
752 struct svc_xprt *xprt;
756 if (sscanf(&buf[1], "%15s %4u", transport, &port) != 2)
759 if (port < 1 || port > USHRT_MAX || nfsd_serv == NULL)
762 xprt = svc_find_xprt(nfsd_serv, transport, &init_net, AF_UNSPEC, port);
766 svc_close_xprt(xprt);
771 static ssize_t __write_ports(struct file *file, char *buf, size_t size)
774 return __write_ports_names(buf);
777 return __write_ports_addfd(buf);
779 if (buf[0] == '-' && isdigit(buf[1]))
780 return __write_ports_delfd(buf);
783 return __write_ports_addxprt(buf);
785 if (buf[0] == '-' && isalpha(buf[1]))
786 return __write_ports_delxprt(buf);
792 * write_ports - Pass a socket file descriptor or transport name to listen on
798 * On success: passed-in buffer filled with a '\n'-terminated C
799 * string containing a whitespace-separated list of
800 * named NFSD listeners;
801 * return code is the size in bytes of the string
802 * On error: return code is zero or a negative errno value
807 * buf: C string containing an unsigned
808 * integer value representing a bound
809 * but unconnected socket that is to be
810 * used as an NFSD listener; listen(3)
811 * must be called for a SOCK_STREAM
812 * socket, otherwise it is ignored
813 * size: non-zero length of C string in @buf
815 * On success: NFS service is started;
816 * passed-in buffer filled with a '\n'-terminated C
817 * string containing a unique alphanumeric name of
819 * return code is the size in bytes of the string
820 * On error: return code is a negative errno value
825 * buf: C string containing a "-" followed
826 * by an integer value representing a
827 * previously passed in socket file
829 * size: non-zero length of C string in @buf
831 * On success: NFS service no longer listens on that socket;
832 * passed-in buffer filled with a '\n'-terminated C
833 * string containing a unique name of the listener;
834 * return code is the size in bytes of the string
835 * On error: return code is a negative errno value
840 * buf: C string containing a transport
841 * name and an unsigned integer value
842 * representing the port to listen on,
843 * separated by whitespace
844 * size: non-zero length of C string in @buf
846 * On success: returns zero; NFS service is started
847 * On error: return code is a negative errno value
852 * buf: C string containing a "-" followed
853 * by a transport name and an unsigned
854 * integer value representing the port
855 * to listen on, separated by whitespace
856 * size: non-zero length of C string in @buf
858 * On success: returns zero; NFS service no longer listens
860 * On error: return code is a negative errno value
862 static ssize_t write_ports(struct file *file, char *buf, size_t size)
866 mutex_lock(&nfsd_mutex);
867 rv = __write_ports(file, buf, size);
868 mutex_unlock(&nfsd_mutex);
873 int nfsd_max_blksize;
876 * write_maxblksize - Set or report the current NFS blksize
885 * buf: C string containing an unsigned
886 * integer value representing the new
888 * size: non-zero length of C string in @buf
890 * On success: passed-in buffer filled with '\n'-terminated C string
891 * containing numeric value of the current NFS blksize
893 * return code is the size in bytes of the string
894 * On error: return code is zero or a negative errno value
896 static ssize_t write_maxblksize(struct file *file, char *buf, size_t size)
901 int rv = get_int(&mesg, &bsize);
904 /* force bsize into allowed range and
905 * required alignment.
909 if (bsize > NFSSVC_MAXBLKSIZE)
910 bsize = NFSSVC_MAXBLKSIZE;
912 mutex_lock(&nfsd_mutex);
914 mutex_unlock(&nfsd_mutex);
917 nfsd_max_blksize = bsize;
918 mutex_unlock(&nfsd_mutex);
921 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n",
925 #ifdef CONFIG_NFSD_V4
926 static ssize_t __nfsd4_write_time(struct file *file, char *buf, size_t size, time_t *time)
934 rv = get_int(&mesg, &i);
938 * Some sanity checking. We don't have a reason for
939 * these particular numbers, but problems with the
941 * - Too short: the briefest network outage may
942 * cause clients to lose all their locks. Also,
943 * the frequent polling may be wasteful.
944 * - Too long: do you really want reboot recovery
945 * to take more than an hour? Or to make other
946 * clients wait an hour before being able to
947 * revoke a dead client's locks?
949 if (i < 10 || i > 3600)
954 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%ld\n", *time);
957 static ssize_t nfsd4_write_time(struct file *file, char *buf, size_t size, time_t *time)
961 mutex_lock(&nfsd_mutex);
962 rv = __nfsd4_write_time(file, buf, size, time);
963 mutex_unlock(&nfsd_mutex);
968 * write_leasetime - Set or report the current NFSv4 lease time
977 * buf: C string containing an unsigned
978 * integer value representing the new
979 * NFSv4 lease expiry time
980 * size: non-zero length of C string in @buf
982 * On success: passed-in buffer filled with '\n'-terminated C
983 * string containing unsigned integer value of the
984 * current lease expiry time;
985 * return code is the size in bytes of the string
986 * On error: return code is zero or a negative errno value
988 static ssize_t write_leasetime(struct file *file, char *buf, size_t size)
990 return nfsd4_write_time(file, buf, size, &nfsd4_lease);
994 * write_gracetime - Set or report current NFSv4 grace period time
996 * As above, but sets the time of the NFSv4 grace period.
998 * Note this should never be set to less than the *previous*
999 * lease-period time, but we don't try to enforce this. (In the common
1000 * case (a new boot), we don't know what the previous lease time was
1003 static ssize_t write_gracetime(struct file *file, char *buf, size_t size)
1005 return nfsd4_write_time(file, buf, size, &nfsd4_grace);
1008 extern char *nfs4_recoverydir(void);
1010 static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size)
1019 if (size > PATH_MAX || buf[size-1] != '\n')
1024 len = qword_get(&mesg, recdir, size);
1028 status = nfs4_reset_recoverydir(recdir);
1033 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s\n",
1034 nfs4_recoverydir());
1038 * write_recoverydir - Set or report the pathname of the recovery directory
1047 * buf: C string containing the pathname
1048 * of the directory on a local file
1049 * system containing permanent NFSv4
1051 * size: non-zero length of C string in @buf
1053 * On success: passed-in buffer filled with '\n'-terminated C string
1054 * containing the current recovery pathname setting;
1055 * return code is the size in bytes of the string
1056 * On error: return code is zero or a negative errno value
1058 static ssize_t write_recoverydir(struct file *file, char *buf, size_t size)
1062 mutex_lock(&nfsd_mutex);
1063 rv = __write_recoverydir(file, buf, size);
1064 mutex_unlock(&nfsd_mutex);
1070 /*----------------------------------------------------------------------------*/
1072 * populating the filesystem.
1075 static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
1077 static struct tree_descr nfsd_files[] = {
1078 [NFSD_List] = {"exports", &exports_operations, S_IRUGO},
1079 [NFSD_Export_features] = {"export_features",
1080 &export_features_operations, S_IRUGO},
1081 [NFSD_FO_UnlockIP] = {"unlock_ip",
1082 &transaction_ops, S_IWUSR|S_IRUSR},
1083 [NFSD_FO_UnlockFS] = {"unlock_filesystem",
1084 &transaction_ops, S_IWUSR|S_IRUSR},
1085 [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR},
1086 [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR},
1087 [NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR},
1088 [NFSD_Pool_Stats] = {"pool_stats", &pool_stats_operations, S_IRUGO},
1089 [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR},
1090 [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO},
1091 [NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO},
1092 #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE)
1093 [NFSD_SupportedEnctypes] = {"supported_krb5_enctypes", &supported_enctypes_ops, S_IRUGO},
1094 #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */
1095 #ifdef CONFIG_NFSD_V4
1096 [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR},
1097 [NFSD_Gracetime] = {"nfsv4gracetime", &transaction_ops, S_IWUSR|S_IRUSR},
1098 [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR},
1102 return simple_fill_super(sb, 0x6e667364, nfsd_files);
1105 static struct dentry *nfsd_mount(struct file_system_type *fs_type,
1106 int flags, const char *dev_name, void *data)
1108 return mount_single(fs_type, flags, data, nfsd_fill_super);
1111 static struct file_system_type nfsd_fs_type = {
1112 .owner = THIS_MODULE,
1114 .mount = nfsd_mount,
1115 .kill_sb = kill_litter_super,
1118 #ifdef CONFIG_PROC_FS
1119 static int create_proc_exports_entry(void)
1121 struct proc_dir_entry *entry;
1123 entry = proc_mkdir("fs/nfs", NULL);
1126 entry = proc_create("exports", 0, entry, &exports_operations);
1131 #else /* CONFIG_PROC_FS */
1132 static int create_proc_exports_entry(void)
1139 static struct pernet_operations nfsd_net_ops = {
1141 .size = sizeof(struct nfsd_net),
1144 static int __init init_nfsd(void)
1147 printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n");
1149 retval = register_cld_notifier();
1152 retval = register_pernet_subsys(&nfsd_net_ops);
1154 goto out_unregister_notifier;
1155 retval = nfsd4_init_slabs();
1157 goto out_unregister_pernet;
1159 retval = nfsd_fault_inject_init(); /* nfsd fault injection controls */
1161 goto out_free_slabs;
1162 nfsd_stat_init(); /* Statistics */
1163 retval = nfsd_reply_cache_init();
1166 retval = nfsd_export_init();
1168 goto out_free_cache;
1169 nfsd_lockd_init(); /* lockd->nfsd callbacks */
1170 retval = nfsd_idmap_init();
1172 goto out_free_lockd;
1173 retval = create_proc_exports_entry();
1175 goto out_free_idmap;
1176 retval = register_filesystem(&nfsd_fs_type);
1181 remove_proc_entry("fs/nfs/exports", NULL);
1182 remove_proc_entry("fs/nfs", NULL);
1184 nfsd_idmap_shutdown();
1186 nfsd_lockd_shutdown();
1187 nfsd_export_shutdown();
1189 nfsd_reply_cache_shutdown();
1191 nfsd_stat_shutdown();
1192 nfsd_fault_inject_cleanup();
1195 out_unregister_pernet:
1196 unregister_pernet_subsys(&nfsd_net_ops);
1197 out_unregister_notifier:
1198 unregister_cld_notifier();
1202 static void __exit exit_nfsd(void)
1204 nfsd_export_shutdown();
1205 nfsd_reply_cache_shutdown();
1206 remove_proc_entry("fs/nfs/exports", NULL);
1207 remove_proc_entry("fs/nfs", NULL);
1208 nfsd_stat_shutdown();
1209 nfsd_lockd_shutdown();
1210 nfsd_idmap_shutdown();
1212 nfsd_fault_inject_cleanup();
1213 unregister_filesystem(&nfsd_fs_type);
1214 unregister_pernet_subsys(&nfsd_net_ops);
1215 unregister_cld_notifier();
1218 MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>");
1219 MODULE_LICENSE("GPL");
1220 module_init(init_nfsd)
1221 module_exit(exit_nfsd)