2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
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>
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>
53 #include <security/audit/audit.h>
55 #include <nfs/nfssvc.h>
57 static int nfssvc_offset = SYS_nfssvc;
58 static struct sysent nfssvc_prev_sysent;
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.
67 int (*nfsd_call_nfsserver)(struct thread *, struct nfssvc_args *) = NULL;
68 int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *) = NULL;
69 int (*nfsd_call_nfscl)(struct thread *, struct nfssvc_args *) = NULL;
70 int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *) = NULL;
73 * Nfs server pseudo system call for the nfsd's
76 sys_nfssvc(struct thread *td, struct nfssvc_args *uap)
80 KASSERT(!mtx_owned(&Giant), ("nfssvc(): called with Giant"));
82 AUDIT_ARG_CMD(uap->flag);
84 /* Allow anyone to get the stats. */
85 if ((uap->flag & ~NFSSVC_GETSTATS) != 0) {
86 error = priv_check(td, PRIV_NFS_DAEMON);
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 NFSSVC_DUMPMNTOPTS | NFSSVC_FORCEDISM)) && 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)
115 * Called once to initialize data structures...
118 nfssvc_modevent(module_t mod, int type, void *data)
120 static int registered;
125 error = syscall_register(&nfssvc_offset, &nfssvc_sysent,
126 &nfssvc_prev_sysent, SY_THR_STATIC_KLD);
133 if (nfsd_call_nfsserver != NULL || nfsd_call_nfscommon != NULL
134 || nfsd_call_nfscl != NULL || nfsd_call_nfsd != NULL) {
139 syscall_deregister(&nfssvc_offset, &nfssvc_prev_sysent);
148 static moduledata_t nfssvc_mod = {
153 DECLARE_MODULE(nfssvc, nfssvc_mod, SI_SUB_VFS, SI_ORDER_ANY);
155 /* So that loader and kldload(2) can find us, wherever we are.. */
156 MODULE_VERSION(nfssvc, 1);