nfs_nfssvc.c revision 1.1.1.1.10.3
1 1.1.1.1.10.2 tls /* $NetBSD: nfs_nfssvc.c,v 1.1.1.1.10.3 2017/12/03 11:38:42 jdolecek Exp $ */ 2 1.1.1.1.10.2 tls /*- 3 1.1.1.1.10.2 tls * Copyright (c) 1989, 1993 4 1.1.1.1.10.2 tls * The Regents of the University of California. All rights reserved. 5 1.1.1.1.10.2 tls * 6 1.1.1.1.10.2 tls * This code is derived from software contributed to Berkeley by 7 1.1.1.1.10.2 tls * Rick Macklem at The University of Guelph. 8 1.1.1.1.10.2 tls * 9 1.1.1.1.10.2 tls * Redistribution and use in source and binary forms, with or without 10 1.1.1.1.10.2 tls * modification, are permitted provided that the following conditions 11 1.1.1.1.10.2 tls * are met: 12 1.1.1.1.10.2 tls * 1. Redistributions of source code must retain the above copyright 13 1.1.1.1.10.2 tls * notice, this list of conditions and the following disclaimer. 14 1.1.1.1.10.2 tls * 2. Redistributions in binary form must reproduce the above copyright 15 1.1.1.1.10.2 tls * notice, this list of conditions and the following disclaimer in the 16 1.1.1.1.10.2 tls * documentation and/or other materials provided with the distribution. 17 1.1.1.1.10.2 tls * 4. Neither the name of the University nor the names of its contributors 18 1.1.1.1.10.2 tls * may be used to endorse or promote products derived from this software 19 1.1.1.1.10.2 tls * without specific prior written permission. 20 1.1.1.1.10.2 tls * 21 1.1.1.1.10.2 tls * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 1.1.1.1.10.2 tls * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 1.1.1.1.10.2 tls * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 1.1.1.1.10.2 tls * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 1.1.1.1.10.2 tls * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 1.1.1.1.10.2 tls * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 1.1.1.1.10.2 tls * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 1.1.1.1.10.2 tls * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 1.1.1.1.10.2 tls * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 1.1.1.1.10.2 tls * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 1.1.1.1.10.2 tls * SUCH DAMAGE. 32 1.1.1.1.10.2 tls * 33 1.1.1.1.10.2 tls */ 34 1.1.1.1.10.2 tls 35 1.1.1.1.10.2 tls #include <sys/cdefs.h> 36 1.1.1.1.10.3 jdolecek /* __FBSDID("FreeBSD: head/sys/nfs/nfs_nfssvc.c 298788 2016-04-29 16:07:25Z pfg "); */ 37 1.1.1.1.10.2 tls __RCSID("$NetBSD: nfs_nfssvc.c,v 1.1.1.1.10.3 2017/12/03 11:38:42 jdolecek Exp $"); 38 1.1.1.1.10.2 tls 39 1.1.1.1.10.3 jdolecek #ifdef _KERNEL_OPT 40 1.1.1.1.10.3 jdolecek #include "opt_newnfs.h" 41 1.1.1.1.10.3 jdolecek #endif 42 1.1.1.1.10.2 tls 43 1.1.1.1.10.2 tls #include <sys/param.h> 44 1.1.1.1.10.2 tls #include <sys/systm.h> 45 1.1.1.1.10.2 tls #include <sys/sysproto.h> 46 1.1.1.1.10.2 tls #include <sys/kernel.h> 47 1.1.1.1.10.2 tls #include <sys/sysctl.h> 48 1.1.1.1.10.2 tls #include <sys/priv.h> 49 1.1.1.1.10.2 tls #include <sys/proc.h> 50 1.1.1.1.10.2 tls #include <sys/lock.h> 51 1.1.1.1.10.2 tls #include <sys/mutex.h> 52 1.1.1.1.10.2 tls #include <sys/module.h> 53 1.1.1.1.10.2 tls #include <sys/sysent.h> 54 1.1.1.1.10.2 tls #include <sys/syscall.h> 55 1.1.1.1.10.2 tls 56 1.1.1.1.10.2 tls #include <security/audit/audit.h> 57 1.1.1.1.10.2 tls 58 1.1.1.1.10.3 jdolecek #include <fs/nfs/common/nfssvc.h> 59 1.1.1.1.10.2 tls 60 1.1.1.1.10.2 tls static int nfssvc_offset = SYS_nfssvc; 61 1.1.1.1.10.2 tls static struct sysent nfssvc_prev_sysent; 62 1.1.1.1.10.2 tls MAKE_SYSENT(nfssvc); 63 1.1.1.1.10.2 tls 64 1.1.1.1.10.2 tls /* 65 1.1.1.1.10.2 tls * This tiny module simply handles the nfssvc() system call. The other 66 1.1.1.1.10.2 tls * nfs modules that use the system call register themselves by setting 67 1.1.1.1.10.2 tls * the nfsd_call_xxx function pointers non-NULL. 68 1.1.1.1.10.2 tls */ 69 1.1.1.1.10.2 tls 70 1.1.1.1.10.2 tls int (*nfsd_call_nfsserver)(struct thread *, struct nfssvc_args *) = NULL; 71 1.1.1.1.10.2 tls int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *) = NULL; 72 1.1.1.1.10.2 tls int (*nfsd_call_nfscl)(struct thread *, struct nfssvc_args *) = NULL; 73 1.1.1.1.10.2 tls int (*nfsd_call_nfsd)(struct thread *, struct nfssvc_args *) = NULL; 74 1.1.1.1.10.2 tls 75 1.1.1.1.10.2 tls /* 76 1.1.1.1.10.3 jdolecek * Nfs server pseudo system call for the nfsd's 77 1.1.1.1.10.2 tls */ 78 1.1.1.1.10.2 tls int 79 1.1.1.1.10.2 tls sys_nfssvc(struct thread *td, struct nfssvc_args *uap) 80 1.1.1.1.10.2 tls { 81 1.1.1.1.10.2 tls int error; 82 1.1.1.1.10.2 tls 83 1.1.1.1.10.2 tls KASSERT(!mtx_owned(&Giant), ("nfssvc(): called with Giant")); 84 1.1.1.1.10.2 tls 85 1.1.1.1.10.2 tls AUDIT_ARG_CMD(uap->flag); 86 1.1.1.1.10.2 tls 87 1.1.1.1.10.2 tls /* Allow anyone to get the stats. */ 88 1.1.1.1.10.2 tls if ((uap->flag & ~NFSSVC_GETSTATS) != 0) { 89 1.1.1.1.10.2 tls error = priv_check(td, PRIV_NFS_DAEMON); 90 1.1.1.1.10.2 tls if (error != 0) 91 1.1.1.1.10.2 tls return (error); 92 1.1.1.1.10.2 tls } 93 1.1.1.1.10.2 tls error = EINVAL; 94 1.1.1.1.10.2 tls if ((uap->flag & (NFSSVC_ADDSOCK | NFSSVC_OLDNFSD | NFSSVC_NFSD)) && 95 1.1.1.1.10.2 tls nfsd_call_nfsserver != NULL) 96 1.1.1.1.10.2 tls error = (*nfsd_call_nfsserver)(td, uap); 97 1.1.1.1.10.2 tls else if ((uap->flag & (NFSSVC_CBADDSOCK | NFSSVC_NFSCBD | 98 1.1.1.1.10.2 tls NFSSVC_DUMPMNTOPTS)) && nfsd_call_nfscl != NULL) 99 1.1.1.1.10.2 tls error = (*nfsd_call_nfscl)(td, uap); 100 1.1.1.1.10.2 tls else if ((uap->flag & (NFSSVC_IDNAME | NFSSVC_GETSTATS | 101 1.1.1.1.10.2 tls NFSSVC_GSSDADDPORT | NFSSVC_GSSDADDFIRST | NFSSVC_GSSDDELETEALL | 102 1.1.1.1.10.2 tls NFSSVC_NFSUSERDPORT | NFSSVC_NFSUSERDDELPORT)) && 103 1.1.1.1.10.2 tls nfsd_call_nfscommon != NULL) 104 1.1.1.1.10.2 tls error = (*nfsd_call_nfscommon)(td, uap); 105 1.1.1.1.10.2 tls else if ((uap->flag & (NFSSVC_NFSDNFSD | NFSSVC_NFSDADDSOCK | 106 1.1.1.1.10.2 tls NFSSVC_PUBLICFH | NFSSVC_V4ROOTEXPORT | NFSSVC_NOPUBLICFH | 107 1.1.1.1.10.2 tls NFSSVC_STABLERESTART | NFSSVC_ADMINREVOKE | 108 1.1.1.1.10.2 tls NFSSVC_DUMPCLIENTS | NFSSVC_DUMPLOCKS | NFSSVC_BACKUPSTABLE | 109 1.1.1.1.10.2 tls NFSSVC_SUSPENDNFSD | NFSSVC_RESUMENFSD)) && 110 1.1.1.1.10.2 tls nfsd_call_nfsd != NULL) 111 1.1.1.1.10.2 tls error = (*nfsd_call_nfsd)(td, uap); 112 1.1.1.1.10.2 tls if (error == EINTR || error == ERESTART) 113 1.1.1.1.10.2 tls error = 0; 114 1.1.1.1.10.2 tls return (error); 115 1.1.1.1.10.2 tls } 116 1.1.1.1.10.2 tls 117 1.1.1.1.10.2 tls /* 118 1.1.1.1.10.2 tls * Called once to initialize data structures... 119 1.1.1.1.10.2 tls */ 120 1.1.1.1.10.2 tls static int 121 1.1.1.1.10.2 tls nfssvc_modevent(module_t mod, int type, void *data) 122 1.1.1.1.10.2 tls { 123 1.1.1.1.10.2 tls static int registered; 124 1.1.1.1.10.2 tls int error = 0; 125 1.1.1.1.10.2 tls 126 1.1.1.1.10.2 tls switch (type) { 127 1.1.1.1.10.2 tls case MOD_LOAD: 128 1.1.1.1.10.2 tls error = syscall_register(&nfssvc_offset, &nfssvc_sysent, 129 1.1.1.1.10.3 jdolecek &nfssvc_prev_sysent, SY_THR_STATIC_KLD); 130 1.1.1.1.10.2 tls if (error) 131 1.1.1.1.10.2 tls break; 132 1.1.1.1.10.2 tls registered = 1; 133 1.1.1.1.10.2 tls break; 134 1.1.1.1.10.2 tls 135 1.1.1.1.10.2 tls case MOD_UNLOAD: 136 1.1.1.1.10.2 tls if (nfsd_call_nfsserver != NULL || nfsd_call_nfscommon != NULL 137 1.1.1.1.10.2 tls || nfsd_call_nfscl != NULL || nfsd_call_nfsd != NULL) { 138 1.1.1.1.10.2 tls error = EBUSY; 139 1.1.1.1.10.2 tls break; 140 1.1.1.1.10.2 tls } 141 1.1.1.1.10.2 tls if (registered) 142 1.1.1.1.10.2 tls syscall_deregister(&nfssvc_offset, &nfssvc_prev_sysent); 143 1.1.1.1.10.2 tls registered = 0; 144 1.1.1.1.10.2 tls break; 145 1.1.1.1.10.2 tls default: 146 1.1.1.1.10.2 tls error = EOPNOTSUPP; 147 1.1.1.1.10.2 tls break; 148 1.1.1.1.10.2 tls } 149 1.1.1.1.10.2 tls return error; 150 1.1.1.1.10.2 tls } 151 1.1.1.1.10.2 tls static moduledata_t nfssvc_mod = { 152 1.1.1.1.10.2 tls "nfssvc", 153 1.1.1.1.10.2 tls nfssvc_modevent, 154 1.1.1.1.10.2 tls NULL, 155 1.1.1.1.10.2 tls }; 156 1.1.1.1.10.2 tls DECLARE_MODULE(nfssvc, nfssvc_mod, SI_SUB_VFS, SI_ORDER_ANY); 157 1.1.1.1.10.2 tls 158 1.1.1.1.10.2 tls /* So that loader and kldload(2) can find us, wherever we are.. */ 159 1.1.1.1.10.2 tls MODULE_VERSION(nfssvc, 1); 160 1.1.1.1.10.2 tls 161
Indexes created Fri Oct 03 02:09:57 GMT 2025