2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1989, 1993, 1995
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 static const char copyright[] =
37 "@(#) Copyright (c) 1989, 1993, 1995\n\
38 The Regents of the University of California. All rights reserved.\n";
43 static char sccsid[] = "@(#)showmount.c 8.3 (Berkeley) 3/29/95";
45 static const char rcsid[] =
49 #include <sys/types.h>
50 #include <sys/queue.h>
52 #include <sys/socket.h>
53 #include <sys/socketvar.h>
59 #include <rpc/pmap_clnt.h>
60 #include <rpc/pmap_prot.h>
61 #include <rpcsvc/mount.h>
75 #define DOPARSABLEEXPORTS 0x4
78 struct mountlist *ml_left;
79 struct mountlist *ml_right;
80 char ml_host[MNTNAMLEN+1];
81 char ml_dirp[MNTPATHLEN+1];
85 struct grouplist *gr_next;
86 char gr_name[MNTNAMLEN+1];
90 struct exportslist *ex_next;
91 struct grouplist *ex_groups;
92 char ex_dirp[MNTPATHLEN+1];
95 static struct mountlist *mntdump;
96 static struct exportslist *exportslist;
99 void print_dump(struct mountlist *);
100 static void usage(void);
101 int xdr_mntdump(XDR *, struct mountlist **);
102 int xdr_exportslist(XDR *, struct exportslist **);
103 int tcp_callrpc(const char *host, int prognum, int versnum, int procnum,
104 xdrproc_t inproc, char *in, xdrproc_t outproc, char *out);
106 static const struct option long_opts[] = {
107 { "all", no_argument, NULL, 'a' },
108 { "directories", no_argument, NULL, 'd' },
109 { "exports-script", no_argument, NULL, 'E' },
110 { "exports", no_argument, NULL, 'e' },
111 { NULL, 0, NULL, 0 },
115 * This command queries the NFS mount daemon for it's mount list and/or
116 * it's exports list and prints them out.
117 * See "NFS: Network File System Protocol Specification, RFC1094, Appendix A"
118 * and the "Network File System Protocol XXX.."
119 * for detailed information on the protocol.
122 main(int argc, char **argv)
124 char strvised[MNTPATHLEN * 4 + 1];
125 register struct exportslist *exp;
126 register struct grouplist *grp;
127 register int rpcs = 0, mntvers = 3;
129 int ch, estat, nbytes;
131 while ((ch = getopt_long(argc, argv, "+adEe13", long_opts, NULL)) != -1)
148 rpcs |= DOPARSABLEEXPORTS;
166 if ((rpcs & DOPARSABLEEXPORTS) != 0) {
167 if ((rpcs & DOEXPORTS) != 0)
168 errx(1, "-E cannot be used with -e");
169 if ((rpcs & DODUMP) != 0)
170 errx(1, "-E cannot be used with -a or -d");
182 if ((estat = tcp_callrpc(host, MOUNTPROG, mntvers,
183 MOUNTPROC_DUMP, (xdrproc_t)xdr_void, (char *)0,
184 (xdrproc_t)xdr_mntdump, (char *)&mntdump)) != 0) {
186 errx(1, "can't do mountdump rpc");
188 if (rpcs & (DOEXPORTS | DOPARSABLEEXPORTS))
189 if ((estat = tcp_callrpc(host, MOUNTPROG, mntvers,
190 MOUNTPROC_EXPORT, (xdrproc_t)xdr_void, (char *)0,
191 (xdrproc_t)xdr_exportslist, (char *)&exportslist)) != 0) {
193 errx(1, "can't do exports rpc");
196 /* Now just print out the results */
200 printf("All mount points on %s:\n", host);
203 printf("Directories on %s:\n", host);
206 printf("Hosts on %s:\n", host);
211 if (rpcs & DOEXPORTS) {
212 printf("Exports list on %s:\n", host);
215 printf("%-34s ", exp->ex_dirp);
216 grp = exp->ex_groups;
218 printf("Everyone\n");
221 printf("%s ", grp->gr_name);
229 if (rpcs & DOPARSABLEEXPORTS) {
232 nbytes = strsnvis(strvised, sizeof(strvised),
233 exp->ex_dirp, VIS_GLOB | VIS_NL, "\"'$");
236 printf("%s\n", strvised);
244 * tcp_callrpc has the same interface as callrpc, but tries to
245 * use tcp as transport method in order to handle large replies.
248 tcp_callrpc(const char *host, int prognum, int versnum, int procnum,
249 xdrproc_t inproc, char *in, xdrproc_t outproc, char *out)
252 struct timeval timeout;
255 if ((client = clnt_create(host, prognum, versnum, "tcp")) == NULL &&
256 (client = clnt_create(host, prognum, versnum, "udp")) == NULL)
257 return ((int) rpc_createerr.cf_stat);
261 rval = (int) clnt_call(client, procnum,
265 clnt_destroy(client);
270 * Xdr routine for retrieving the mount dump list
273 xdr_mntdump(XDR *xdrsp, struct mountlist **mlp)
275 register struct mountlist *mp;
276 register struct mountlist *tp;
277 register struct mountlist **otp;
282 *mlp = (struct mountlist *)0;
283 if (!xdr_bool(xdrsp, &bool))
286 mp = (struct mountlist *)malloc(sizeof(struct mountlist));
289 mp->ml_left = mp->ml_right = (struct mountlist *)0;
291 if (!xdr_string(xdrsp, &strp, MNTNAMLEN)) {
296 if (!xdr_string(xdrsp, &strp, MNTPATHLEN)) {
302 * Build a binary tree on sorted order of either host or dirp.
303 * Drop any duplications.
310 val = strcmp(mp->ml_host, tp->ml_host);
311 val2 = strcmp(mp->ml_dirp, tp->ml_dirp);
347 if (!xdr_bool(xdrsp, &bool))
354 * Xdr routine to retrieve exports list
357 xdr_exportslist(XDR *xdrsp, struct exportslist **exp)
359 register struct exportslist *ep;
360 register struct grouplist *gp;
364 *exp = (struct exportslist *)0;
365 if (!xdr_bool(xdrsp, &bool))
368 ep = (struct exportslist *)malloc(sizeof(struct exportslist));
371 ep->ex_groups = (struct grouplist *)0;
373 if (!xdr_string(xdrsp, &strp, MNTPATHLEN))
375 if (!xdr_bool(xdrsp, &grpbool))
378 gp = (struct grouplist *)malloc(sizeof(struct grouplist));
382 if (!xdr_string(xdrsp, &strp, MNTNAMLEN))
384 gp->gr_next = ep->ex_groups;
386 if (!xdr_bool(xdrsp, &grpbool))
391 if (!xdr_bool(xdrsp, &bool))
400 fprintf(stderr, "usage: showmount [-a | -d] [-e3] [host]\n");
405 * Print the binary tree in inorder so that output is sorted.
408 print_dump(struct mountlist *mp)
414 print_dump(mp->ml_left);
417 printf("%s:%s\n", mp->ml_host, mp->ml_dirp);
420 printf("%s\n", mp->ml_dirp);
423 printf("%s\n", mp->ml_host);
427 print_dump(mp->ml_right);