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)
130 return seq_open(file, &nfs_exports_op);
133 static const struct file_operations exports_operations = {
134 .open = exports_open,
137 .release = seq_release,
138 .owner = THIS_MODULE,
141 static int export_features_show(struct seq_file *m, void *v)
143 seq_printf(m, "0x%x 0x%x\n", NFSEXP_ALLFLAGS, NFSEXP_SECINFO_FLAGS);
147 static int export_features_open(struct inode *inode, struct file *file)
149 return single_open(file, export_features_show, NULL);
152 static struct file_operations export_features_operations = {
153 .open = export_features_open,
156 .release = single_release,
159 #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE)
160 static int supported_enctypes_show(struct seq_file *m, void *v)
162 seq_printf(m, KRB5_SUPPORTED_ENCTYPES);
166 static int supported_enctypes_open(struct inode *inode, struct file *file)
168 return single_open(file, supported_enctypes_show, NULL);
171 static struct file_operations supported_enctypes_ops = {
172 .open = supported_enctypes_open,
175 .release = single_release,
177 #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */
179 extern int nfsd_pool_stats_open(struct inode *inode, struct file *file);
180 extern int nfsd_pool_stats_release(struct inode *inode, struct file *file);
182 static const struct file_operations pool_stats_operations = {
183 .open = nfsd_pool_stats_open,
186 .release = nfsd_pool_stats_release,
187 .owner = THIS_MODULE,
190 /*----------------------------------------------------------------------------*/
192 * payload - write methods
197 * write_unlock_ip - Release all locks used by a client
202 * buf: '\n'-terminated C string containing a
203 * presentation format IP address
204 * size: length of C string in @buf
206 * On success: returns zero if all specified locks were released;
207 * returns one if one or more locks were not released
208 * On error: return code is negative errno value
210 static ssize_t write_unlock_ip(struct file *file, char *buf, size_t size)
212 struct sockaddr_storage address;
213 struct sockaddr *sap = (struct sockaddr *)&address;
214 size_t salen = sizeof(address);
221 if (buf[size-1] != '\n')
225 if (qword_get(&buf, fo_path, size) < 0)
228 if (rpc_pton(&init_net, fo_path, size, sap, salen) == 0)
231 return nlmsvc_unlock_all_by_ip(sap);
235 * write_unlock_fs - Release all locks on a local file system
240 * buf: '\n'-terminated C string containing the
241 * absolute pathname of a local file system
242 * size: length of C string in @buf
244 * On success: returns zero if all specified locks were released;
245 * returns one if one or more locks were not released
246 * On error: return code is negative errno value
248 static ssize_t write_unlock_fs(struct file *file, char *buf, size_t size)
258 if (buf[size-1] != '\n')
262 if (qword_get(&buf, fo_path, size) < 0)
265 error = kern_path(fo_path, 0, &path);
270 * XXX: Needs better sanity checking. Otherwise we could end up
271 * releasing locks on the wrong file system.
274 * 1. Does the path refer to a directory?
275 * 2. Is that directory a mount point, or
276 * 3. Is that directory the root of an exported file system?
278 error = nlmsvc_unlock_all_by_sb(path.dentry->d_sb);
285 * write_filehandle - Get a variable-length NFS file handle by path
287 * On input, the buffer contains a '\n'-terminated C string comprised of
288 * three alphanumeric words separated by whitespace. The string may
289 * contain escape sequences.
293 * domain: client domain name
294 * path: export pathname
295 * maxsize: numeric maximum size of
297 * size: length of C string in @buf
299 * On success: passed-in buffer filled with '\n'-terminated C
300 * string containing a ASCII hex text version
301 * of the NFS file handle;
302 * return code is the size in bytes of the string
303 * On error: return code is negative errno value
305 static ssize_t write_filehandle(struct file *file, char *buf, size_t size)
308 int uninitialized_var(maxsize);
311 struct auth_domain *dom;
317 if (buf[size-1] != '\n')
322 len = qword_get(&mesg, dname, size);
327 len = qword_get(&mesg, path, size);
331 len = get_int(&mesg, &maxsize);
335 if (maxsize < NFS_FHSIZE)
337 if (maxsize > NFS3_FHSIZE)
338 maxsize = NFS3_FHSIZE;
340 if (qword_get(&mesg, mesg, size)>0)
343 /* we have all the words, they are in buf.. */
344 dom = unix_domain_find(dname);
348 len = exp_rootfh(dom, path, &fh, maxsize);
349 auth_domain_put(dom);
354 len = SIMPLE_TRANSACTION_LIMIT;
355 qword_addhex(&mesg, &len, (char*)&fh.fh_base, fh.fh_size);
361 * write_threads - Start NFSD, or report the current number of running threads
367 * On success: passed-in buffer filled with '\n'-terminated C
368 * string numeric value representing the number of
369 * running NFSD threads;
370 * return code is the size in bytes of the string
371 * On error: return code is zero
376 * buf: C string containing an unsigned
377 * integer value representing the
378 * number of NFSD threads to start
379 * size: non-zero length of C string in @buf
381 * On success: NFS service is started;
382 * passed-in buffer filled with '\n'-terminated C
383 * string numeric value representing the number of
384 * running NFSD threads;
385 * return code is the size in bytes of the string
386 * On error: return code is zero or a negative errno value
388 static ssize_t write_threads(struct file *file, char *buf, size_t size)
394 rv = get_int(&mesg, &newthreads);
399 rv = nfsd_svc(NFS_PORT, newthreads);
403 rv = nfsd_nrthreads();
405 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n", rv);
409 * write_pool_threads - Set or report the current number of threads per pool
418 * buf: C string containing whitespace-
419 * separated unsigned integer values
420 * representing the number of NFSD
421 * threads to start in each pool
422 * size: non-zero length of C string in @buf
424 * On success: passed-in buffer filled with '\n'-terminated C
425 * string containing integer values representing the
426 * number of NFSD threads in each pool;
427 * return code is the size in bytes of the string
428 * On error: return code is zero or a negative errno value
430 static ssize_t write_pool_threads(struct file *file, char *buf, size_t size)
432 /* if size > 0, look for an array of number of threads per node
433 * and apply them then write out number of threads per node as reply
442 mutex_lock(&nfsd_mutex);
443 npools = nfsd_nrpools();
446 * NFS is shut down. The admin can start it by
447 * writing to the threads file but NOT the pool_threads
448 * file, sorry. Report zero threads.
450 mutex_unlock(&nfsd_mutex);
455 nthreads = kcalloc(npools, sizeof(int), GFP_KERNEL);
457 if (nthreads == NULL)
461 for (i = 0; i < npools; i++) {
462 rv = get_int(&mesg, &nthreads[i]);
464 break; /* fewer numbers than pools */
466 goto out_free; /* syntax error */
471 rv = nfsd_set_nrthreads(i, nthreads);
476 rv = nfsd_get_nrthreads(npools, nthreads);
481 size = SIMPLE_TRANSACTION_LIMIT;
482 for (i = 0; i < npools && size > 0; i++) {
483 snprintf(mesg, size, "%d%c", nthreads[i], (i == npools-1 ? '\n' : ' '));
491 mutex_unlock(&nfsd_mutex);
495 static ssize_t __write_versions(struct file *file, char *buf, size_t size)
498 char *vers, *minorp, sign;
499 int len, num, remaining;
506 /* Cannot change versions without updating
507 * nfsd_serv->sv_xdrsize, and reallocing
508 * rq_argp and rq_resp
511 if (buf[size-1] != '\n')
516 len = qword_get(&mesg, vers, size);
517 if (len <= 0) return -EINVAL;
520 if (sign == '+' || sign == '-')
521 num = simple_strtol((vers+1), &minorp, 0);
523 num = simple_strtol(vers, &minorp, 0);
524 if (*minorp == '.') {
527 minor = simple_strtoul(minorp+1, NULL, 0);
530 if (nfsd_minorversion(minor, sign == '-' ?
531 NFSD_CLEAR : NFSD_SET) < 0)
539 nfsd_vers(num, sign == '-' ? NFSD_CLEAR : NFSD_SET);
546 } while ((len = qword_get(&mesg, vers, size)) > 0);
547 /* If all get turned off, turn them back on, as
548 * having no versions is BAD
550 nfsd_reset_versions();
553 /* Now write current state into reply buffer */
556 remaining = SIMPLE_TRANSACTION_LIMIT;
557 for (num=2 ; num <= 4 ; num++)
558 if (nfsd_vers(num, NFSD_AVAIL)) {
559 len = snprintf(buf, remaining, "%s%c%d", sep,
560 nfsd_vers(num, NFSD_TEST)?'+':'-',
570 if (nfsd_vers(4, NFSD_AVAIL))
571 for (minor = 1; minor <= NFSD_SUPPORTED_MINOR_VERSION;
573 len = snprintf(buf, remaining, " %c4.%u",
574 (nfsd_vers(4, NFSD_TEST) &&
575 nfsd_minorversion(minor, NFSD_TEST)) ?
586 len = snprintf(buf, remaining, "\n");
593 * write_versions - Set or report the available NFS protocol versions
599 * On success: passed-in buffer filled with '\n'-terminated C
600 * string containing positive or negative integer
601 * values representing the current status of each
603 * return code is the size in bytes of the string
604 * On error: return code is zero or a negative errno value
609 * buf: C string containing whitespace-
610 * separated positive or negative
611 * integer values representing NFS
612 * protocol versions to enable ("+n")
614 * size: non-zero length of C string in @buf
616 * On success: status of zero or more protocol versions has
617 * been updated; passed-in buffer filled with
618 * '\n'-terminated C string containing positive
619 * or negative integer values representing the
620 * current status of each protocol version;
621 * return code is the size in bytes of the string
622 * On error: return code is zero or a negative errno value
624 static ssize_t write_versions(struct file *file, char *buf, size_t size)
628 mutex_lock(&nfsd_mutex);
629 rv = __write_versions(file, buf, size);
630 mutex_unlock(&nfsd_mutex);
635 * Zero-length write. Return a list of NFSD's current listener
638 static ssize_t __write_ports_names(char *buf)
640 if (nfsd_serv == NULL)
642 return svc_xprt_names(nfsd_serv, buf, SIMPLE_TRANSACTION_LIMIT);
646 * A single 'fd' number was written, in which case it must be for
647 * a socket of a supported family/protocol, and we use it as an
650 static ssize_t __write_ports_addfd(char *buf)
655 err = get_int(&mesg, &fd);
656 if (err != 0 || fd < 0)
659 err = nfsd_create_serv();
663 err = svc_addsock(nfsd_serv, fd, buf, SIMPLE_TRANSACTION_LIMIT);
665 svc_destroy(nfsd_serv);
669 /* Decrease the count, but don't shut down the service */
670 nfsd_serv->sv_nrthreads--;
675 * A '-' followed by the 'name' of a socket means we close the socket.
677 static ssize_t __write_ports_delfd(char *buf)
682 toclose = kstrdup(buf + 1, GFP_KERNEL);
686 if (nfsd_serv != NULL)
687 len = svc_sock_names(nfsd_serv, buf,
688 SIMPLE_TRANSACTION_LIMIT, toclose);
694 * A transport listener is added by writing it's transport name and
697 static ssize_t __write_ports_addxprt(char *buf)
700 struct svc_xprt *xprt;
703 if (sscanf(buf, "%15s %4u", transport, &port) != 2)
706 if (port < 1 || port > USHRT_MAX)
709 err = nfsd_create_serv();
713 err = svc_create_xprt(nfsd_serv, transport, &init_net,
714 PF_INET, port, SVC_SOCK_ANONYMOUS);
718 err = svc_create_xprt(nfsd_serv, transport, &init_net,
719 PF_INET6, port, SVC_SOCK_ANONYMOUS);
720 if (err < 0 && err != -EAFNOSUPPORT)
723 /* Decrease the count, but don't shut down the service */
724 nfsd_serv->sv_nrthreads--;
727 xprt = svc_find_xprt(nfsd_serv, transport, &init_net, PF_INET, port);
729 svc_close_xprt(xprt);
733 svc_destroy(nfsd_serv);
738 * A transport listener is removed by writing a "-", it's transport
739 * name, and it's port number.
741 static ssize_t __write_ports_delxprt(char *buf)
743 struct svc_xprt *xprt;
747 if (sscanf(&buf[1], "%15s %4u", transport, &port) != 2)
750 if (port < 1 || port > USHRT_MAX || nfsd_serv == NULL)
753 xprt = svc_find_xprt(nfsd_serv, transport, &init_net, AF_UNSPEC, port);
757 svc_close_xprt(xprt);
762 static ssize_t __write_ports(struct file *file, char *buf, size_t size)
765 return __write_ports_names(buf);
768 return __write_ports_addfd(buf);
770 if (buf[0] == '-' && isdigit(buf[1]))
771 return __write_ports_delfd(buf);
774 return __write_ports_addxprt(buf);
776 if (buf[0] == '-' && isalpha(buf[1]))
777 return __write_ports_delxprt(buf);
783 * write_ports - Pass a socket file descriptor or transport name to listen on
789 * On success: passed-in buffer filled with a '\n'-terminated C
790 * string containing a whitespace-separated list of
791 * named NFSD listeners;
792 * return code is the size in bytes of the string
793 * On error: return code is zero or a negative errno value
798 * buf: C string containing an unsigned
799 * integer value representing a bound
800 * but unconnected socket that is to be
801 * used as an NFSD listener; listen(3)
802 * must be called for a SOCK_STREAM
803 * socket, otherwise it is ignored
804 * size: non-zero length of C string in @buf
806 * On success: NFS service is started;
807 * passed-in buffer filled with a '\n'-terminated C
808 * string containing a unique alphanumeric name of
810 * return code is the size in bytes of the string
811 * On error: return code is a negative errno value
816 * buf: C string containing a "-" followed
817 * by an integer value representing a
818 * previously passed in socket file
820 * size: non-zero length of C string in @buf
822 * On success: NFS service no longer listens on that socket;
823 * passed-in buffer filled with a '\n'-terminated C
824 * string containing a unique name of the listener;
825 * return code is the size in bytes of the string
826 * On error: return code is a negative errno value
831 * buf: C string containing a transport
832 * name and an unsigned integer value
833 * representing the port to listen on,
834 * separated by whitespace
835 * size: non-zero length of C string in @buf
837 * On success: returns zero; NFS service is started
838 * On error: return code is a negative errno value
843 * buf: C string containing a "-" followed
844 * by a transport name and an unsigned
845 * integer value representing the port
846 * to listen on, separated by whitespace
847 * size: non-zero length of C string in @buf
849 * On success: returns zero; NFS service no longer listens
851 * On error: return code is a negative errno value
853 static ssize_t write_ports(struct file *file, char *buf, size_t size)
857 mutex_lock(&nfsd_mutex);
858 rv = __write_ports(file, buf, size);
859 mutex_unlock(&nfsd_mutex);
864 int nfsd_max_blksize;
867 * write_maxblksize - Set or report the current NFS blksize
876 * buf: C string containing an unsigned
877 * integer value representing the new
879 * size: non-zero length of C string in @buf
881 * On success: passed-in buffer filled with '\n'-terminated C string
882 * containing numeric value of the current NFS blksize
884 * return code is the size in bytes of the string
885 * On error: return code is zero or a negative errno value
887 static ssize_t write_maxblksize(struct file *file, char *buf, size_t size)
892 int rv = get_int(&mesg, &bsize);
895 /* force bsize into allowed range and
896 * required alignment.
900 if (bsize > NFSSVC_MAXBLKSIZE)
901 bsize = NFSSVC_MAXBLKSIZE;
903 mutex_lock(&nfsd_mutex);
905 mutex_unlock(&nfsd_mutex);
908 nfsd_max_blksize = bsize;
909 mutex_unlock(&nfsd_mutex);
912 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%d\n",
916 #ifdef CONFIG_NFSD_V4
917 static ssize_t __nfsd4_write_time(struct file *file, char *buf, size_t size, time_t *time)
925 rv = get_int(&mesg, &i);
929 * Some sanity checking. We don't have a reason for
930 * these particular numbers, but problems with the
932 * - Too short: the briefest network outage may
933 * cause clients to lose all their locks. Also,
934 * the frequent polling may be wasteful.
935 * - Too long: do you really want reboot recovery
936 * to take more than an hour? Or to make other
937 * clients wait an hour before being able to
938 * revoke a dead client's locks?
940 if (i < 10 || i > 3600)
945 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%ld\n", *time);
948 static ssize_t nfsd4_write_time(struct file *file, char *buf, size_t size, time_t *time)
952 mutex_lock(&nfsd_mutex);
953 rv = __nfsd4_write_time(file, buf, size, time);
954 mutex_unlock(&nfsd_mutex);
959 * write_leasetime - Set or report the current NFSv4 lease time
968 * buf: C string containing an unsigned
969 * integer value representing the new
970 * NFSv4 lease expiry time
971 * size: non-zero length of C string in @buf
973 * On success: passed-in buffer filled with '\n'-terminated C
974 * string containing unsigned integer value of the
975 * current lease expiry time;
976 * return code is the size in bytes of the string
977 * On error: return code is zero or a negative errno value
979 static ssize_t write_leasetime(struct file *file, char *buf, size_t size)
981 return nfsd4_write_time(file, buf, size, &nfsd4_lease);
985 * write_gracetime - Set or report current NFSv4 grace period time
987 * As above, but sets the time of the NFSv4 grace period.
989 * Note this should never be set to less than the *previous*
990 * lease-period time, but we don't try to enforce this. (In the common
991 * case (a new boot), we don't know what the previous lease time was
994 static ssize_t write_gracetime(struct file *file, char *buf, size_t size)
996 return nfsd4_write_time(file, buf, size, &nfsd4_grace);
999 extern char *nfs4_recoverydir(void);
1001 static ssize_t __write_recoverydir(struct file *file, char *buf, size_t size)
1010 if (size > PATH_MAX || buf[size-1] != '\n')
1015 len = qword_get(&mesg, recdir, size);
1019 status = nfs4_reset_recoverydir(recdir);
1024 return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%s\n",
1025 nfs4_recoverydir());
1029 * write_recoverydir - Set or report the pathname of the recovery directory
1038 * buf: C string containing the pathname
1039 * of the directory on a local file
1040 * system containing permanent NFSv4
1042 * size: non-zero length of C string in @buf
1044 * On success: passed-in buffer filled with '\n'-terminated C string
1045 * containing the current recovery pathname setting;
1046 * return code is the size in bytes of the string
1047 * On error: return code is zero or a negative errno value
1049 static ssize_t write_recoverydir(struct file *file, char *buf, size_t size)
1053 mutex_lock(&nfsd_mutex);
1054 rv = __write_recoverydir(file, buf, size);
1055 mutex_unlock(&nfsd_mutex);
1061 /*----------------------------------------------------------------------------*/
1063 * populating the filesystem.
1066 static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
1068 static struct tree_descr nfsd_files[] = {
1069 [NFSD_List] = {"exports", &exports_operations, S_IRUGO},
1070 [NFSD_Export_features] = {"export_features",
1071 &export_features_operations, S_IRUGO},
1072 [NFSD_FO_UnlockIP] = {"unlock_ip",
1073 &transaction_ops, S_IWUSR|S_IRUSR},
1074 [NFSD_FO_UnlockFS] = {"unlock_filesystem",
1075 &transaction_ops, S_IWUSR|S_IRUSR},
1076 [NFSD_Fh] = {"filehandle", &transaction_ops, S_IWUSR|S_IRUSR},
1077 [NFSD_Threads] = {"threads", &transaction_ops, S_IWUSR|S_IRUSR},
1078 [NFSD_Pool_Threads] = {"pool_threads", &transaction_ops, S_IWUSR|S_IRUSR},
1079 [NFSD_Pool_Stats] = {"pool_stats", &pool_stats_operations, S_IRUGO},
1080 [NFSD_Versions] = {"versions", &transaction_ops, S_IWUSR|S_IRUSR},
1081 [NFSD_Ports] = {"portlist", &transaction_ops, S_IWUSR|S_IRUGO},
1082 [NFSD_MaxBlkSize] = {"max_block_size", &transaction_ops, S_IWUSR|S_IRUGO},
1083 #if defined(CONFIG_SUNRPC_GSS) || defined(CONFIG_SUNRPC_GSS_MODULE)
1084 [NFSD_SupportedEnctypes] = {"supported_krb5_enctypes", &supported_enctypes_ops, S_IRUGO},
1085 #endif /* CONFIG_SUNRPC_GSS or CONFIG_SUNRPC_GSS_MODULE */
1086 #ifdef CONFIG_NFSD_V4
1087 [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR},
1088 [NFSD_Gracetime] = {"nfsv4gracetime", &transaction_ops, S_IWUSR|S_IRUSR},
1089 [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR},
1093 return simple_fill_super(sb, 0x6e667364, nfsd_files);
1096 static struct dentry *nfsd_mount(struct file_system_type *fs_type,
1097 int flags, const char *dev_name, void *data)
1099 return mount_single(fs_type, flags, data, nfsd_fill_super);
1102 static struct file_system_type nfsd_fs_type = {
1103 .owner = THIS_MODULE,
1105 .mount = nfsd_mount,
1106 .kill_sb = kill_litter_super,
1109 #ifdef CONFIG_PROC_FS
1110 static int create_proc_exports_entry(void)
1112 struct proc_dir_entry *entry;
1114 entry = proc_mkdir("fs/nfs", NULL);
1117 entry = proc_create("exports", 0, entry, &exports_operations);
1122 #else /* CONFIG_PROC_FS */
1123 static int create_proc_exports_entry(void)
1130 static struct pernet_operations nfsd_net_ops = {
1132 .size = sizeof(struct nfsd_net),
1135 static int __init init_nfsd(void)
1138 printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n");
1140 retval = register_cld_notifier();
1143 retval = register_pernet_subsys(&nfsd_net_ops);
1145 goto out_unregister_notifier;
1146 retval = nfsd4_init_slabs();
1148 goto out_unregister_pernet;
1150 retval = nfsd_fault_inject_init(); /* nfsd fault injection controls */
1152 goto out_free_slabs;
1153 nfsd_stat_init(); /* Statistics */
1154 retval = nfsd_reply_cache_init();
1157 retval = nfsd_export_init();
1159 goto out_free_cache;
1160 nfsd_lockd_init(); /* lockd->nfsd callbacks */
1161 retval = nfsd_idmap_init();
1163 goto out_free_lockd;
1164 retval = create_proc_exports_entry();
1166 goto out_free_idmap;
1167 retval = register_filesystem(&nfsd_fs_type);
1172 remove_proc_entry("fs/nfs/exports", NULL);
1173 remove_proc_entry("fs/nfs", NULL);
1175 nfsd_idmap_shutdown();
1177 nfsd_lockd_shutdown();
1178 nfsd_export_shutdown();
1180 nfsd_reply_cache_shutdown();
1182 nfsd_stat_shutdown();
1183 nfsd_fault_inject_cleanup();
1186 out_unregister_pernet:
1187 unregister_pernet_subsys(&nfsd_net_ops);
1188 out_unregister_notifier:
1189 unregister_cld_notifier();
1193 static void __exit exit_nfsd(void)
1195 nfsd_export_shutdown();
1196 nfsd_reply_cache_shutdown();
1197 remove_proc_entry("fs/nfs/exports", NULL);
1198 remove_proc_entry("fs/nfs", NULL);
1199 nfsd_stat_shutdown();
1200 nfsd_lockd_shutdown();
1201 nfsd_idmap_shutdown();
1203 nfsd_fault_inject_cleanup();
1204 unregister_filesystem(&nfsd_fs_type);
1205 unregister_pernet_subsys(&nfsd_net_ops);
1206 unregister_cld_notifier();
1209 MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>");
1210 MODULE_LICENSE("GPL");
1211 module_init(init_nfsd)
1212 module_exit(exit_nfsd)