2 * Copyright (c) 1989, 1993, 1995
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 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * @(#) Copyright (c) 1989, 1993, 1995 The Regents of the University of California. All rights reserved.
37 * @(#)showmount.c 8.3 (Berkeley) 3/29/95
38 * $FreeBSD: src/usr.bin/showmount/showmount.c,v 1.16 2005/05/21 09:55:08 ru Exp $
39 * $DragonFly: src/usr.bin/showmount/showmount.c,v 1.5 2005/09/05 04:22:07 swildner Exp $
42 #include <sys/types.h>
43 #include <sys/queue.h>
45 #include <sys/socket.h>
46 #include <sys/socketvar.h>
51 #include <rpc/pmap_clnt.h>
52 #include <rpc/pmap_prot.h>
53 #include <nfs/rpcv2.h>
68 struct mountlist *ml_left;
69 struct mountlist *ml_right;
70 char ml_host[RPCMNT_NAMELEN+1];
71 char ml_dirp[RPCMNT_PATHLEN+1];
75 struct grouplist *gr_next;
76 char gr_name[RPCMNT_NAMELEN+1];
80 struct exportslist *ex_next;
81 struct grouplist *ex_groups;
82 char ex_dirp[RPCMNT_PATHLEN+1];
85 static struct mountlist *mntdump;
86 static struct exportslist *exports;
89 void print_dump(struct mountlist *);
90 static void usage(void);
91 int xdr_mntdump(XDR *, struct mountlist **);
92 int xdr_exports(XDR *, struct exportslist **);
93 int tcp_callrpc(const char *, int, int, int, xdrproc_t, char *, xdrproc_t,
97 * This command queries the NFS mount daemon for it's mount list and/or
98 * it's exports list and prints them out.
99 * See "NFS: Network File System Protocol Specification, RFC1094, Appendix A"
100 * and the "Network File System Protocol XXX.."
101 * for detailed information on the protocol.
104 main(int argc, char **argv)
106 struct exportslist *exp;
107 struct grouplist *grp;
108 int rpcs = 0, mntvers = 1;
112 while ((ch = getopt(argc, argv, "ade3")) != -1)
150 if ((estat = tcp_callrpc(host, RPCPROG_MNT, mntvers,
151 RPCMNT_DUMP, (xdrproc_t)xdr_void, NULL,
152 (xdrproc_t)xdr_mntdump, (char *)&mntdump)) != 0) {
154 errx(1, "can't do mountdump rpc");
156 if (rpcs & DOEXPORTS)
157 if ((estat = tcp_callrpc(host, RPCPROG_MNT, mntvers,
158 RPCMNT_EXPORT, (xdrproc_t)xdr_void, NULL,
159 (xdrproc_t)xdr_exports, (char *)&exports)) != 0) {
161 errx(1, "can't do exports rpc");
164 /* Now just print out the results */
168 printf("All mount points on %s:\n", host);
171 printf("Directories on %s:\n", host);
174 printf("Hosts on %s:\n", host);
179 if (rpcs & DOEXPORTS) {
180 printf("Exports list on %s:\n", host);
183 printf("%-35s", exp->ex_dirp);
184 grp = exp->ex_groups;
186 printf("Everyone\n");
189 printf("%s ", grp->gr_name);
201 * tcp_callrpc has the same interface as callrpc, but tries to
202 * use tcp as transport method in order to handle large replies.
205 tcp_callrpc(const char *host, int prognum, int versnum, int procnum,
206 xdrproc_t inproc, char *in, xdrproc_t outproc, char *out)
209 struct timeval timeout;
212 if ((client = clnt_create(host, prognum, versnum, "tcp")) == NULL &&
213 (client = clnt_create(host, prognum, versnum, "udp")) == NULL)
214 return ((int) rpc_createerr.cf_stat);
218 rval = (int) clnt_call(client, procnum,
222 clnt_destroy(client);
227 * Xdr routine for retrieving the mount dump list
230 xdr_mntdump(XDR *xdrsp, struct mountlist **mlp)
232 struct mountlist *mp;
233 struct mountlist *tp;
234 struct mountlist **otp = NULL;
240 if (!xdr_bool(xdrsp, &bool))
243 mp = (struct mountlist *)malloc(sizeof(struct mountlist));
246 mp->ml_left = mp->ml_right = NULL;
248 if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN))
251 if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
255 * Build a binary tree on sorted order of either host or dirp.
256 * Drop any duplications.
263 val = strcmp(mp->ml_host, tp->ml_host);
264 val2 = strcmp(mp->ml_dirp, tp->ml_dirp);
300 if (!xdr_bool(xdrsp, &bool))
307 * Xdr routine to retrieve exports list
310 xdr_exports(XDR *xdrsp, struct exportslist **exp)
312 struct exportslist *ep;
313 struct grouplist *gp;
318 if (!xdr_bool(xdrsp, &bool))
321 ep = (struct exportslist *)malloc(sizeof(struct exportslist));
324 ep->ex_groups = NULL;
326 if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
328 if (!xdr_bool(xdrsp, &grpbool))
331 gp = (struct grouplist *)malloc(sizeof(struct grouplist));
335 if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN))
337 gp->gr_next = ep->ex_groups;
339 if (!xdr_bool(xdrsp, &grpbool))
344 if (!xdr_bool(xdrsp, &bool))
353 fprintf(stderr, "usage: showmount [-a | -d] [-e3] [host]\n");
358 * Print the binary tree in inorder so that output is sorted.
361 print_dump(struct mountlist *mp)
367 print_dump(mp->ml_left);
370 printf("%s:%s\n", mp->ml_host, mp->ml_dirp);
373 printf("%s\n", mp->ml_dirp);
376 printf("%s\n", mp->ml_host);
380 print_dump(mp->ml_right);