1/*-
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 */
33
34#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 */
33
34#include <sys/cdefs.h>
|
35__FBSDID("$FreeBSD: head/sys/nfs/nfs_nfssvc.c 241561 2012-10-14 22:33:17Z rmacklem $");
| 35__FBSDID("$FreeBSD: head/sys/nfs/nfs_nfssvc.c 243782 2012-12-02 01:16:04Z rmacklem $");
|
36
37#include "opt_nfs.h"
38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/sysproto.h>
42#include <sys/kernel.h>
43#include <sys/sysctl.h>
44#include <sys/priv.h>
45#include <sys/proc.h>
46#include <sys/lock.h>
47#include <sys/mutex.h>
48#include <sys/module.h>
49#include <sys/sysent.h>
50#include <sys/syscall.h>
51#include <sys/sysproto.h>
52
53#include <security/audit/audit.h>
54
55#include <nfs/nfssvc.h>
56
57static int nfssvc_offset = SYS_nfssvc;
58static struct sysent nfssvc_prev_sysent;
59MAKE_SYSENT(nfssvc);
60
61/*
62 * This tiny module simply handles the nfssvc() system call. The other
63 * nfs modules that use the system call register themselves by setting
64 * the nfsd_call_xxx function pointers non-NULL.
65 */
66
67int (*nfsd_call_nfsserver)(struct thread *, struct nfssvc_args *) = NULL;
68int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *) = NULL;
69int (*nfsd_call_nfscl)(struct thread *, struct nfssvc_args *) = NULL;
70int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *) = NULL;
71
72/*
73 * Nfs server psuedo system call for the nfsd's
74 */
75int
76sys_nfssvc(struct thread *td, struct nfssvc_args *uap)
77{
78 int error;
79
80 KASSERT(!mtx_owned(&Giant), ("nfssvc(): called with Giant"));
81
82 AUDIT_ARG_CMD(uap->flag);
83
84 /* Allow anyone to get the stats. */
85 if ((uap->flag & ~NFSSVC_GETSTATS) != 0) {
86 error = priv_check(td, PRIV_NFS_DAEMON);
87 if (error != 0)
88 return (error);
89 }
90 error = EINVAL;
91 if ((uap->flag & (NFSSVC_ADDSOCK | NFSSVC_OLDNFSD | NFSSVC_NFSD)) &&
92 nfsd_call_nfsserver != NULL)
93 error = (*nfsd_call_nfsserver)(td, uap);
| 36
37#include "opt_nfs.h"
38
39#include <sys/param.h>
40#include <sys/systm.h>
41#include <sys/sysproto.h>
42#include <sys/kernel.h>
43#include <sys/sysctl.h>
44#include <sys/priv.h>
45#include <sys/proc.h>
46#include <sys/lock.h>
47#include <sys/mutex.h>
48#include <sys/module.h>
49#include <sys/sysent.h>
50#include <sys/syscall.h>
51#include <sys/sysproto.h>
52
53#include <security/audit/audit.h>
54
55#include <nfs/nfssvc.h>
56
57static int nfssvc_offset = SYS_nfssvc;
58static struct sysent nfssvc_prev_sysent;
59MAKE_SYSENT(nfssvc);
60
61/*
62 * This tiny module simply handles the nfssvc() system call. The other
63 * nfs modules that use the system call register themselves by setting
64 * the nfsd_call_xxx function pointers non-NULL.
65 */
66
67int (*nfsd_call_nfsserver)(struct thread *, struct nfssvc_args *) = NULL;
68int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *) = NULL;
69int (*nfsd_call_nfscl)(struct thread *, struct nfssvc_args *) = NULL;
70int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *) = NULL;
71
72/*
73 * Nfs server psuedo system call for the nfsd's
74 */
75int
76sys_nfssvc(struct thread *td, struct nfssvc_args *uap)
77{
78 int error;
79
80 KASSERT(!mtx_owned(&Giant), ("nfssvc(): called with Giant"));
81
82 AUDIT_ARG_CMD(uap->flag);
83
84 /* Allow anyone to get the stats. */
85 if ((uap->flag & ~NFSSVC_GETSTATS) != 0) {
86 error = priv_check(td, PRIV_NFS_DAEMON);
87 if (error != 0)
88 return (error);
89 }
90 error = EINVAL;
91 if ((uap->flag & (NFSSVC_ADDSOCK | NFSSVC_OLDNFSD | NFSSVC_NFSD)) &&
92 nfsd_call_nfsserver != NULL)
93 error = (*nfsd_call_nfsserver)(td, uap);
|
94 else if ((uap->flag & (NFSSVC_CBADDSOCK | NFSSVC_NFSCBD)) &&
95 nfsd_call_nfscl != NULL)
| 94 else if ((uap->flag & (NFSSVC_CBADDSOCK | NFSSVC_NFSCBD |
95 NFSSVC_DUMPMNTOPTS)) && nfsd_call_nfscl != NULL)
|
96 error = (*nfsd_call_nfscl)(td, uap);
97 else if ((uap->flag & (NFSSVC_IDNAME | NFSSVC_GETSTATS |
98 NFSSVC_GSSDADDPORT | NFSSVC_GSSDADDFIRST | NFSSVC_GSSDDELETEALL |
99 NFSSVC_NFSUSERDPORT | NFSSVC_NFSUSERDDELPORT)) &&
100 nfsd_call_nfscommon != NULL)
101 error = (*nfsd_call_nfscommon)(td, uap);
102 else if ((uap->flag & (NFSSVC_NFSDNFSD | NFSSVC_NFSDADDSOCK |
103 NFSSVC_PUBLICFH | NFSSVC_V4ROOTEXPORT | NFSSVC_NOPUBLICFH |
104 NFSSVC_STABLERESTART | NFSSVC_ADMINREVOKE |
105 NFSSVC_DUMPCLIENTS | NFSSVC_DUMPLOCKS | NFSSVC_BACKUPSTABLE |
106 NFSSVC_SUSPENDNFSD | NFSSVC_RESUMENFSD)) &&
107 nfsd_call_nfsd != NULL)
108 error = (*nfsd_call_nfsd)(td, uap);
109 if (error == EINTR || error == ERESTART)
110 error = 0;
111 return (error);
112}
113
114/*
115 * Called once to initialize data structures...
116 */
117static int
118nfssvc_modevent(module_t mod, int type, void *data)
119{
120 static int registered;
121 int error = 0;
122
123 switch (type) {
124 case MOD_LOAD:
125 error = syscall_register(&nfssvc_offset, &nfssvc_sysent,
126 &nfssvc_prev_sysent);
127 if (error)
128 break;
129 registered = 1;
130 break;
131
132 case MOD_UNLOAD:
133 if (nfsd_call_nfsserver != NULL || nfsd_call_nfscommon != NULL
134 || nfsd_call_nfscl != NULL || nfsd_call_nfsd != NULL) {
135 error = EBUSY;
136 break;
137 }
138 if (registered)
139 syscall_deregister(&nfssvc_offset, &nfssvc_prev_sysent);
140 registered = 0;
141 break;
142 default:
143 error = EOPNOTSUPP;
144 break;
145 }
146 return error;
147}
148static moduledata_t nfssvc_mod = {
149 "nfssvc",
150 nfssvc_modevent,
151 NULL,
152};
153DECLARE_MODULE(nfssvc, nfssvc_mod, SI_SUB_VFS, SI_ORDER_ANY);
154
155/* So that loader and kldload(2) can find us, wherever we are.. */
156MODULE_VERSION(nfssvc, 1);
157
| 96 error = (*nfsd_call_nfscl)(td, uap);
97 else if ((uap->flag & (NFSSVC_IDNAME | NFSSVC_GETSTATS |
98 NFSSVC_GSSDADDPORT | NFSSVC_GSSDADDFIRST | NFSSVC_GSSDDELETEALL |
99 NFSSVC_NFSUSERDPORT | NFSSVC_NFSUSERDDELPORT)) &&
100 nfsd_call_nfscommon != NULL)
101 error = (*nfsd_call_nfscommon)(td, uap);
102 else if ((uap->flag & (NFSSVC_NFSDNFSD | NFSSVC_NFSDADDSOCK |
103 NFSSVC_PUBLICFH | NFSSVC_V4ROOTEXPORT | NFSSVC_NOPUBLICFH |
104 NFSSVC_STABLERESTART | NFSSVC_ADMINREVOKE |
105 NFSSVC_DUMPCLIENTS | NFSSVC_DUMPLOCKS | NFSSVC_BACKUPSTABLE |
106 NFSSVC_SUSPENDNFSD | NFSSVC_RESUMENFSD)) &&
107 nfsd_call_nfsd != NULL)
108 error = (*nfsd_call_nfsd)(td, uap);
109 if (error == EINTR || error == ERESTART)
110 error = 0;
111 return (error);
112}
113
114/*
115 * Called once to initialize data structures...
116 */
117static int
118nfssvc_modevent(module_t mod, int type, void *data)
119{
120 static int registered;
121 int error = 0;
122
123 switch (type) {
124 case MOD_LOAD:
125 error = syscall_register(&nfssvc_offset, &nfssvc_sysent,
126 &nfssvc_prev_sysent);
127 if (error)
128 break;
129 registered = 1;
130 break;
131
132 case MOD_UNLOAD:
133 if (nfsd_call_nfsserver != NULL || nfsd_call_nfscommon != NULL
134 || nfsd_call_nfscl != NULL || nfsd_call_nfsd != NULL) {
135 error = EBUSY;
136 break;
137 }
138 if (registered)
139 syscall_deregister(&nfssvc_offset, &nfssvc_prev_sysent);
140 registered = 0;
141 break;
142 default:
143 error = EOPNOTSUPP;
144 break;
145 }
146 return error;
147}
148static moduledata_t nfssvc_mod = {
149 "nfssvc",
150 nfssvc_modevent,
151 NULL,
152};
153DECLARE_MODULE(nfssvc, nfssvc_mod, SI_SUB_VFS, SI_ORDER_ANY);
154
155/* So that loader and kldload(2) can find us, wherever we are.. */
156MODULE_VERSION(nfssvc, 1);
157
|