2 * Copyright (c) 1997-2006 Erez Zadok
3 * Copyright (c) 1989 Jan-Simon Pendry
4 * Copyright (c) 1989 Imperial College of Science, Technology & Medicine
5 * Copyright (c) 1989 The Regents of the University of California.
8 * This code is derived from software contributed to Berkeley by
9 * Jan-Simon Pendry at Imperial College, London.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgment:
21 * This product includes software developed by the University of
22 * California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 * File: am-utils/amd/nfs_prot_svc.c
46 #endif /* HAVE_CONFIG_H */
50 /* external definitions */
51 extern voidp nfsproc_null_2_svc(voidp, struct svc_req *);
52 extern nfsattrstat *nfsproc_getattr_2_svc(am_nfs_fh *, struct svc_req *);
53 extern nfsattrstat *nfsproc_setattr_2_svc(nfssattrargs *, struct svc_req *);
54 extern voidp nfsproc_root_2_svc(voidp, struct svc_req *);
55 extern nfsdiropres *nfsproc_lookup_2_svc(nfsdiropargs *, struct svc_req *);
56 extern nfsreadlinkres *nfsproc_readlink_2_svc(am_nfs_fh *, struct svc_req *);
57 extern nfsreadres *nfsproc_read_2_svc(nfsreadargs *, struct svc_req *);
58 extern voidp nfsproc_writecache_2_svc(voidp, struct svc_req *);
59 extern nfsattrstat *nfsproc_write_2_svc(nfswriteargs *, struct svc_req *);
60 extern nfsdiropres *nfsproc_create_2_svc(nfscreateargs *, struct svc_req *);
61 extern nfsstat *nfsproc_remove_2_svc(nfsdiropargs *, struct svc_req *);
62 extern nfsstat *nfsproc_rename_2_svc(nfsrenameargs *, struct svc_req *);
63 extern nfsstat *nfsproc_link_2_svc(nfslinkargs *, struct svc_req *);
64 extern nfsstat *nfsproc_symlink_2_svc(nfssymlinkargs *, struct svc_req *);
65 extern nfsdiropres *nfsproc_mkdir_2_svc(nfscreateargs *, struct svc_req *);
66 extern nfsstat *nfsproc_rmdir_2_svc(nfsdiropargs *, struct svc_req *);
67 extern nfsreaddirres *nfsproc_readdir_2_svc(nfsreaddirargs *, struct svc_req *);
68 extern nfsstatfsres *nfsproc_statfs_2_svc(am_nfs_fh *, struct svc_req *);
70 /* global variables */
71 SVCXPRT *current_transp;
74 typedef char *(*nfssvcproc_t)(voidp, struct svc_req *);
78 nfs_program_2(struct svc_req *rqstp, SVCXPRT *transp)
81 am_nfs_fh nfsproc_getattr_2_arg;
82 nfssattrargs nfsproc_setattr_2_arg;
83 nfsdiropargs nfsproc_lookup_2_arg;
84 am_nfs_fh nfsproc_readlink_2_arg;
85 nfsreadargs nfsproc_read_2_arg;
86 nfswriteargs nfsproc_write_2_arg;
87 nfscreateargs nfsproc_create_2_arg;
88 nfsdiropargs nfsproc_remove_2_arg;
89 nfsrenameargs nfsproc_rename_2_arg;
90 nfslinkargs nfsproc_link_2_arg;
91 nfssymlinkargs nfsproc_symlink_2_arg;
92 nfscreateargs nfsproc_mkdir_2_arg;
93 nfsdiropargs fsproc_rmdir_2_arg;
94 nfsreaddirargs nfsproc_readdir_2_arg;
95 am_nfs_fh nfsproc_statfs_2_arg;
98 xdrproc_t xdr_argument, xdr_result;
101 #ifdef HAVE_TRANSPORT_TYPE_TLI
103 * On TLI systems we don't use an INET network type, but a "ticlts" (see
104 * /etc/netconfig and conf/transp_tli.c:create_nfs_service). This means
105 * that packets could only come from the loopback interface, and we don't
106 * need to check them and filter possibly spoofed packets. Therefore we
107 * only need to check if the UID caller is correct.
109 # ifdef HAVE___RPC_GET_LOCAL_UID
111 /* extern definition for an internal libnsl function */
112 extern int __rpc_get_local_uid(SVCXPRT *transp, uid_t *uid);
113 if (__rpc_get_local_uid(transp, &u) >= 0 && u != 0) {
114 plog(XLOG_WARNING, "ignoring request from UID %ld, must be 0", (long) u);
117 # else /* not HAVE___RPC_GET_LOCAL_UID */
118 dlog("cannot verify local uid for rpc request");
119 # endif /* HAVE___RPC_GET_LOCAL_UID */
120 #else /* not HAVE_TRANPORT_TYPE_TLI */
121 struct sockaddr_in *sinp;
122 char dq[20], dq2[28];
123 sinp = amu_svc_getcaller(rqstp->rq_xprt);
124 # ifdef MNT2_NFS_OPT_RESVPORT
125 /* Verify that the request comes from a reserved port */
127 ntohs(sinp->sin_port) >= IPPORT_RESERVED &&
128 !(gopt.flags & CFM_NFS_INSECURE_PORT)) {
129 plog(XLOG_WARNING, "ignoring request from %s:%u, port not reserved",
130 inet_dquad(dq, sizeof(dq), sinp->sin_addr.s_addr),
131 ntohs(sinp->sin_port));
134 # endif /* MNT2_NFS_OPT_RESVPORT */
135 /* if the address does not match, ignore the request */
136 if (sinp && (sinp->sin_addr.s_addr != myipaddr.s_addr)) {
137 if (gopt.flags & CFM_NFS_ANY_INTERFACE) {
138 if (!is_interface_local(sinp->sin_addr.s_addr)) {
139 plog(XLOG_WARNING, "ignoring request from %s:%u, not a local interface",
140 inet_dquad(dq, sizeof(dq), sinp->sin_addr.s_addr),
141 ntohs(sinp->sin_port));
144 plog(XLOG_WARNING, "ignoring request from %s:%u, expected %s",
145 inet_dquad(dq, sizeof(dq), sinp->sin_addr.s_addr),
146 ntohs(sinp->sin_port),
147 inet_dquad(dq2, sizeof(dq2), myipaddr.s_addr));
151 #endif /* not HAVE_TRANPORT_TYPE_TLI */
153 current_transp = NULL;
155 switch (rqstp->rq_proc) {
158 xdr_argument = (xdrproc_t) xdr_void;
159 xdr_result = (xdrproc_t) xdr_void;
160 local = (nfssvcproc_t) nfsproc_null_2_svc;
163 case NFSPROC_GETATTR:
164 xdr_argument = (xdrproc_t) xdr_nfs_fh;
165 xdr_result = (xdrproc_t) xdr_attrstat;
166 local = (nfssvcproc_t) nfsproc_getattr_2_svc;
169 case NFSPROC_SETATTR:
170 xdr_argument = (xdrproc_t) xdr_sattrargs;
171 xdr_result = (xdrproc_t) xdr_attrstat;
172 local = (nfssvcproc_t) nfsproc_setattr_2_svc;
176 xdr_argument = (xdrproc_t) xdr_void;
177 xdr_result = (xdrproc_t) xdr_void;
178 local = (nfssvcproc_t) nfsproc_root_2_svc;
182 xdr_argument = (xdrproc_t) xdr_diropargs;
183 xdr_result = (xdrproc_t) xdr_diropres;
184 local = (nfssvcproc_t) nfsproc_lookup_2_svc;
186 * Cheap way to pass transp down to amfs_auto_lookuppn so it can
187 * be stored in the am_node structure and later used for
190 current_transp = transp;
193 case NFSPROC_READLINK:
194 xdr_argument = (xdrproc_t) xdr_nfs_fh;
195 xdr_result = (xdrproc_t) xdr_readlinkres;
196 local = (nfssvcproc_t) nfsproc_readlink_2_svc;
200 xdr_argument = (xdrproc_t) xdr_readargs;
201 xdr_result = (xdrproc_t) xdr_readres;
202 local = (nfssvcproc_t) nfsproc_read_2_svc;
205 case NFSPROC_WRITECACHE:
206 xdr_argument = (xdrproc_t) xdr_void;
207 xdr_result = (xdrproc_t) xdr_void;
208 local = (nfssvcproc_t) nfsproc_writecache_2_svc;
212 xdr_argument = (xdrproc_t) xdr_writeargs;
213 xdr_result = (xdrproc_t) xdr_attrstat;
214 local = (nfssvcproc_t) nfsproc_write_2_svc;
218 xdr_argument = (xdrproc_t) xdr_createargs;
219 xdr_result = (xdrproc_t) xdr_diropres;
220 local = (nfssvcproc_t) nfsproc_create_2_svc;
224 xdr_argument = (xdrproc_t) xdr_diropargs;
225 xdr_result = (xdrproc_t) xdr_nfsstat;
226 local = (nfssvcproc_t) nfsproc_remove_2_svc;
230 xdr_argument = (xdrproc_t) xdr_renameargs;
231 xdr_result = (xdrproc_t) xdr_nfsstat;
232 local = (nfssvcproc_t) nfsproc_rename_2_svc;
236 xdr_argument = (xdrproc_t) xdr_linkargs;
237 xdr_result = (xdrproc_t) xdr_nfsstat;
238 local = (nfssvcproc_t) nfsproc_link_2_svc;
241 case NFSPROC_SYMLINK:
242 xdr_argument = (xdrproc_t) xdr_symlinkargs;
243 xdr_result = (xdrproc_t) xdr_nfsstat;
244 local = (nfssvcproc_t) nfsproc_symlink_2_svc;
248 xdr_argument = (xdrproc_t) xdr_createargs;
249 xdr_result = (xdrproc_t) xdr_diropres;
250 local = (nfssvcproc_t) nfsproc_mkdir_2_svc;
254 xdr_argument = (xdrproc_t) xdr_diropargs;
255 xdr_result = (xdrproc_t) xdr_nfsstat;
256 local = (nfssvcproc_t) nfsproc_rmdir_2_svc;
259 case NFSPROC_READDIR:
260 xdr_argument = (xdrproc_t) xdr_readdirargs;
261 xdr_result = (xdrproc_t) xdr_readdirres;
262 local = (nfssvcproc_t) nfsproc_readdir_2_svc;
266 xdr_argument = (xdrproc_t) xdr_nfs_fh;
267 xdr_result = (xdrproc_t) xdr_statfsres;
268 local = (nfssvcproc_t) nfsproc_statfs_2_svc;
272 svcerr_noproc(transp);
276 memset((char *) &argument, 0, sizeof(argument));
277 if (!svc_getargs(transp,
278 (XDRPROC_T_TYPE) xdr_argument,
279 (SVC_IN_ARG_TYPE) &argument)) {
281 "NFS xdr decode failed for %d %d %d",
282 (int) rqstp->rq_prog, (int) rqstp->rq_vers, (int) rqstp->rq_proc);
283 svcerr_decode(transp);
286 result = (*local) (&argument, rqstp);
288 current_transp = NULL;
290 if (result != NULL && !svc_sendreply(transp,
291 (XDRPROC_T_TYPE) xdr_result,
293 svcerr_systemerr(transp);
295 if (!svc_freeargs(transp,
296 (XDRPROC_T_TYPE) xdr_argument,
297 (SVC_IN_ARG_TYPE) & argument)) {
298 plog(XLOG_FATAL, "unable to free rpc arguments in nfs_program_2");