2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1989, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
8 * Rick Macklem at The University of Guelph.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/sysproto.h>
44 #include <sys/kernel.h>
45 #include <sys/sysctl.h>
49 #include <sys/mutex.h>
50 #include <sys/module.h>
51 #include <sys/sysent.h>
52 #include <sys/syscall.h>
53 #include <sys/sysproto.h>
55 #include <security/audit/audit.h>
57 #include <nfs/nfssvc.h>
59 static struct syscall_helper_data nfssvc_syscalls[] = {
60 SYSCALL_INIT_HELPER(nfssvc),
65 * This tiny module simply handles the nfssvc() system call. The other
66 * nfs modules that use the system call register themselves by setting
67 * the nfsd_call_xxx function pointers non-NULL.
70 int (*nfsd_call_nfsserver)(struct thread *, struct nfssvc_args *) = NULL;
71 int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *) = NULL;
72 int (*nfsd_call_nfscl)(struct thread *, struct nfssvc_args *) = NULL;
73 int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *) = NULL;
76 * Nfs server pseudo system call for the nfsd's
79 sys_nfssvc(struct thread *td, struct nfssvc_args *uap)
83 KASSERT(!mtx_owned(&Giant), ("nfssvc(): called with Giant"));
85 AUDIT_ARG_CMD(uap->flag);
87 /* Allow anyone to get the stats. */
88 if ((uap->flag & ~(NFSSVC_GETSTATS | NFSSVC_NEWSTRUCT)) != 0) {
89 error = priv_check(td, PRIV_NFS_DAEMON);
94 if ((uap->flag & (NFSSVC_ADDSOCK | NFSSVC_OLDNFSD | NFSSVC_NFSD)) &&
95 nfsd_call_nfsserver != NULL)
96 error = (*nfsd_call_nfsserver)(td, uap);
97 else if ((uap->flag & (NFSSVC_CBADDSOCK | NFSSVC_NFSCBD |
98 NFSSVC_DUMPMNTOPTS | NFSSVC_FORCEDISM)) && nfsd_call_nfscl != NULL)
99 error = (*nfsd_call_nfscl)(td, uap);
100 else if ((uap->flag & (NFSSVC_IDNAME | NFSSVC_GETSTATS |
101 NFSSVC_GSSDADDPORT | NFSSVC_GSSDADDFIRST | NFSSVC_GSSDDELETEALL |
102 NFSSVC_NFSUSERDPORT | NFSSVC_NFSUSERDDELPORT)) &&
103 nfsd_call_nfscommon != NULL)
104 error = (*nfsd_call_nfscommon)(td, uap);
105 else if ((uap->flag & (NFSSVC_NFSDNFSD | NFSSVC_NFSDADDSOCK |
106 NFSSVC_PUBLICFH | NFSSVC_V4ROOTEXPORT | NFSSVC_NOPUBLICFH |
107 NFSSVC_STABLERESTART | NFSSVC_ADMINREVOKE |
108 NFSSVC_DUMPCLIENTS | NFSSVC_DUMPLOCKS | NFSSVC_BACKUPSTABLE |
109 NFSSVC_SUSPENDNFSD | NFSSVC_RESUMENFSD | NFSSVC_PNFSDS)) &&
110 nfsd_call_nfsd != NULL)
111 error = (*nfsd_call_nfsd)(td, uap);
112 if (error == EINTR || error == ERESTART)
118 * Called once to initialize data structures...
121 nfssvc_modevent(module_t mod, int type, void *data)
127 error = syscall_helper_register(nfssvc_syscalls,
132 if (nfsd_call_nfsserver != NULL || nfsd_call_nfscommon != NULL
133 || nfsd_call_nfscl != NULL || nfsd_call_nfsd != NULL) {
137 syscall_helper_unregister(nfssvc_syscalls);
145 static moduledata_t nfssvc_mod = {
150 DECLARE_MODULE(nfssvc, nfssvc_mod, SI_SUB_VFS, SI_ORDER_ANY);
152 /* So that loader and kldload(2) can find us, wherever we are.. */
153 MODULE_VERSION(nfssvc, 1);