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 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 static const char copyright[] =
35 "@(#) Copyright (c) 1989, 1993, 1995\n\
36 The Regents of the University of California. All rights reserved.\n";
41 static char sccsid[] = "@(#)showmount.c 8.3 (Berkeley) 3/29/95";
43 static const char rcsid[] =
47 #include <sys/types.h>
48 #include <sys/queue.h>
50 #include <sys/socket.h>
51 #include <sys/socketvar.h>
56 #include <rpc/pmap_clnt.h>
57 #include <rpc/pmap_prot.h>
58 #include <rpcsvc/mount.h>
72 #define DOPARSABLEEXPORTS 0x4
75 struct mountlist *ml_left;
76 struct mountlist *ml_right;
77 char ml_host[MNTNAMLEN+1];
78 char ml_dirp[MNTPATHLEN+1];
82 struct grouplist *gr_next;
83 char gr_name[MNTNAMLEN+1];
87 struct exportslist *ex_next;
88 struct grouplist *ex_groups;
89 char ex_dirp[MNTPATHLEN+1];
92 static struct mountlist *mntdump;
93 static struct exportslist *exportslist;
96 void print_dump(struct mountlist *);
97 static void usage(void);
98 int xdr_mntdump(XDR *, struct mountlist **);
99 int xdr_exportslist(XDR *, struct exportslist **);
100 int tcp_callrpc(const char *host, int prognum, int versnum, int procnum,
101 xdrproc_t inproc, char *in, xdrproc_t outproc, char *out);
104 * This command queries the NFS mount daemon for it's mount list and/or
105 * it's exports list and prints them out.
106 * See "NFS: Network File System Protocol Specification, RFC1094, Appendix A"
107 * and the "Network File System Protocol XXX.."
108 * for detailed information on the protocol.
111 main(int argc, char **argv)
113 char strvised[MNTPATHLEN * 4 + 1];
114 register struct exportslist *exp;
115 register struct grouplist *grp;
116 register int rpcs = 0, mntvers = 3;
118 int ch, estat, nbytes;
120 while ((ch = getopt(argc, argv, "adEe13")) != -1)
137 rpcs |= DOPARSABLEEXPORTS;
155 if ((rpcs & DOPARSABLEEXPORTS) != 0) {
156 if ((rpcs & DOEXPORTS) != 0)
157 errx(1, "-E cannot be used with -e");
158 if ((rpcs & DODUMP) != 0)
159 errx(1, "-E cannot be used with -a or -d");
171 if ((estat = tcp_callrpc(host, MOUNTPROG, mntvers,
172 MOUNTPROC_DUMP, (xdrproc_t)xdr_void, (char *)0,
173 (xdrproc_t)xdr_mntdump, (char *)&mntdump)) != 0) {
175 errx(1, "can't do mountdump rpc");
177 if (rpcs & (DOEXPORTS | DOPARSABLEEXPORTS))
178 if ((estat = tcp_callrpc(host, MOUNTPROG, mntvers,
179 MOUNTPROC_EXPORT, (xdrproc_t)xdr_void, (char *)0,
180 (xdrproc_t)xdr_exportslist, (char *)&exportslist)) != 0) {
182 errx(1, "can't do exports rpc");
185 /* Now just print out the results */
189 printf("All mount points on %s:\n", host);
192 printf("Directories on %s:\n", host);
195 printf("Hosts on %s:\n", host);
200 if (rpcs & DOEXPORTS) {
201 printf("Exports list on %s:\n", host);
204 printf("%-34s ", exp->ex_dirp);
205 grp = exp->ex_groups;
207 printf("Everyone\n");
210 printf("%s ", grp->gr_name);
218 if (rpcs & DOPARSABLEEXPORTS) {
221 nbytes = strsnvis(strvised, sizeof(strvised),
222 exp->ex_dirp, VIS_GLOB | VIS_NL, "\"'$");
225 printf("%s\n", strvised);
233 * tcp_callrpc has the same interface as callrpc, but tries to
234 * use tcp as transport method in order to handle large replies.
237 tcp_callrpc(const char *host, int prognum, int versnum, int procnum,
238 xdrproc_t inproc, char *in, xdrproc_t outproc, char *out)
241 struct timeval timeout;
244 if ((client = clnt_create(host, prognum, versnum, "tcp")) == NULL &&
245 (client = clnt_create(host, prognum, versnum, "udp")) == NULL)
246 return ((int) rpc_createerr.cf_stat);
250 rval = (int) clnt_call(client, procnum,
254 clnt_destroy(client);
259 * Xdr routine for retrieving the mount dump list
262 xdr_mntdump(XDR *xdrsp, struct mountlist **mlp)
264 register struct mountlist *mp;
265 register struct mountlist *tp;
266 register struct mountlist **otp;
271 *mlp = (struct mountlist *)0;
272 if (!xdr_bool(xdrsp, &bool))
275 mp = (struct mountlist *)malloc(sizeof(struct mountlist));
278 mp->ml_left = mp->ml_right = (struct mountlist *)0;
280 if (!xdr_string(xdrsp, &strp, MNTNAMLEN))
283 if (!xdr_string(xdrsp, &strp, MNTPATHLEN))
287 * Build a binary tree on sorted order of either host or dirp.
288 * Drop any duplications.
295 val = strcmp(mp->ml_host, tp->ml_host);
296 val2 = strcmp(mp->ml_dirp, tp->ml_dirp);
332 if (!xdr_bool(xdrsp, &bool))
339 * Xdr routine to retrieve exports list
342 xdr_exportslist(XDR *xdrsp, struct exportslist **exp)
344 register struct exportslist *ep;
345 register struct grouplist *gp;
349 *exp = (struct exportslist *)0;
350 if (!xdr_bool(xdrsp, &bool))
353 ep = (struct exportslist *)malloc(sizeof(struct exportslist));
356 ep->ex_groups = (struct grouplist *)0;
358 if (!xdr_string(xdrsp, &strp, MNTPATHLEN))
360 if (!xdr_bool(xdrsp, &grpbool))
363 gp = (struct grouplist *)malloc(sizeof(struct grouplist));
367 if (!xdr_string(xdrsp, &strp, MNTNAMLEN))
369 gp->gr_next = ep->ex_groups;
371 if (!xdr_bool(xdrsp, &grpbool))
376 if (!xdr_bool(xdrsp, &bool))
385 fprintf(stderr, "usage: showmount [-a | -d] [-e3] [host]\n");
390 * Print the binary tree in inorder so that output is sorted.
393 print_dump(struct mountlist *mp)
399 print_dump(mp->ml_left);
402 printf("%s:%s\n", mp->ml_host, mp->ml_dirp);
405 printf("%s\n", mp->ml_dirp);
408 printf("%s\n", mp->ml_host);
412 print_dump(mp->ml_right);