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. 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
32 * @(#) Copyright (c) 1989, 1993, 1995 The Regents of the University of California. All rights reserved.
33 * @(#)showmount.c 8.3 (Berkeley) 3/29/95
34 * $FreeBSD: src/usr.bin/showmount/showmount.c,v 1.16 2005/05/21 09:55:08 ru Exp $
37 #include <sys/types.h>
38 #include <sys/queue.h>
40 #include <sys/socket.h>
41 #include <sys/socketvar.h>
46 #include <rpc/pmap_clnt.h>
47 #include <rpc/pmap_prot.h>
48 #include <vfs/nfs/rpcv2.h>
62 #define DOPARSABLEEXPORTS 0x4
65 struct mountlist *ml_left;
66 struct mountlist *ml_right;
67 char ml_host[RPCMNT_NAMELEN+1];
68 char ml_dirp[RPCMNT_PATHLEN+1];
72 struct grouplist *gr_next;
73 char gr_name[RPCMNT_NAMELEN+1];
77 struct exportslist *ex_next;
78 struct grouplist *ex_groups;
79 char ex_dirp[RPCMNT_PATHLEN+1];
82 static struct mountlist *mntdump;
83 static struct exportslist *exports;
86 static void print_dump(struct mountlist *);
87 static void usage(void);
88 static int xdr_mntdump(XDR *, struct mountlist **);
89 static int xdr_exports(XDR *, struct exportslist **);
90 static enum clnt_stat tcp_callrpc(const char *, int, int, int, xdrproc_t,
91 char *, xdrproc_t, char *);
94 * This command queries the NFS mount daemon for it's mount list and/or
95 * it's exports list and prints them out.
96 * See "NFS: Network File System Protocol Specification, RFC1094, Appendix A"
97 * and the "Network File System Protocol XXX.."
98 * for detailed information on the protocol.
101 main(int argc, char **argv)
103 struct exportslist *exp;
104 struct grouplist *grp;
105 int rpcs = 0, mntvers = 1;
108 enum clnt_stat estat;
109 char strvised[1024 * 4 + 1];
111 while ((ch = getopt(argc, argv, "adEe3")) != -1)
128 rpcs |= DOPARSABLEEXPORTS;
143 if ((rpcs & DOPARSABLEEXPORTS) != 0) {
144 if ((rpcs & DOEXPORTS) != 0)
145 errx(1, "-E cannot be used with -e");
146 if ((rpcs & DODUMP) != 0)
147 errx(1, "-E cannot be used with -a or -d");
159 if ((estat = tcp_callrpc(host, RPCPROG_MNT, mntvers,
160 RPCMNT_DUMP, (xdrproc_t)xdr_void, NULL,
161 (xdrproc_t)xdr_mntdump, (char *)&mntdump)) != 0) {
163 errx(1, "can't do mountdump rpc");
165 if (rpcs & (DOEXPORTS | DOPARSABLEEXPORTS))
166 if ((estat = tcp_callrpc(host, RPCPROG_MNT, mntvers,
167 RPCMNT_EXPORT, (xdrproc_t)xdr_void, NULL,
168 (xdrproc_t)xdr_exports, (char *)&exports)) != 0) {
170 errx(1, "can't do exports rpc");
173 /* Now just print out the results */
177 printf("All mount points on %s:\n", host);
180 printf("Directories on %s:\n", host);
183 printf("Hosts on %s:\n", host);
188 if (rpcs & DOEXPORTS) {
189 printf("Exports list on %s:\n", host);
192 printf("%-35s", exp->ex_dirp);
193 grp = exp->ex_groups;
195 printf("Everyone\n");
198 printf("%s ", grp->gr_name);
206 if (rpcs & DOPARSABLEEXPORTS) {
209 nbytes = strsnvis(strvised, sizeof(strvised),
210 exp->ex_dirp, VIS_GLOB | VIS_NL, "\"'$");
213 printf("%s\n", strvised);
221 * tcp_callrpc has the same interface as callrpc, but tries to
222 * use tcp as transport method in order to handle large replies.
224 static enum clnt_stat
225 tcp_callrpc(const char *host, int prognum, int versnum, int procnum,
226 xdrproc_t inproc, char *in, xdrproc_t outproc, char *out)
229 struct timeval timeout;
232 if ((client = clnt_create(host, prognum, versnum, "tcp")) == NULL &&
233 (client = clnt_create(host, prognum, versnum, "udp")) == NULL)
234 return ((int) rpc_createerr.cf_stat);
238 rval = clnt_call(client, procnum, inproc, in, outproc, out, timeout);
239 clnt_destroy(client);
244 * Xdr routine for retrieving the mount dump list
247 xdr_mntdump(XDR *xdrsp, struct mountlist **mlp)
249 struct mountlist *mp;
250 struct mountlist *tp;
251 struct mountlist **otp = NULL;
257 if (!xdr_bool(xdrsp, &bool))
260 mp = (struct mountlist *)malloc(sizeof(struct mountlist));
263 mp->ml_left = mp->ml_right = NULL;
265 if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN))
268 if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
272 * Build a binary tree on sorted order of either host or dirp.
273 * Drop any duplications.
280 val = strcmp(mp->ml_host, tp->ml_host);
281 val2 = strcmp(mp->ml_dirp, tp->ml_dirp);
317 if (!xdr_bool(xdrsp, &bool))
324 * Xdr routine to retrieve exports list
327 xdr_exports(XDR *xdrsp, struct exportslist **exp)
329 struct exportslist *ep;
330 struct grouplist *gp;
335 if (!xdr_bool(xdrsp, &bool))
338 ep = (struct exportslist *)malloc(sizeof(struct exportslist));
341 ep->ex_groups = NULL;
343 if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
345 if (!xdr_bool(xdrsp, &grpbool))
348 gp = (struct grouplist *)malloc(sizeof(struct grouplist));
352 if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN))
354 gp->gr_next = ep->ex_groups;
356 if (!xdr_bool(xdrsp, &grpbool))
361 if (!xdr_bool(xdrsp, &bool))
370 fprintf(stderr, "usage: showmount [-a | -d] [-e3] [host]\n");
375 * Print the binary tree in inorder so that output is sorted.
378 print_dump(struct mountlist *mp)
384 print_dump(mp->ml_left);
387 printf("%s:%s\n", mp->ml_host, mp->ml_dirp);
390 printf("%s\n", mp->ml_dirp);
393 printf("%s\n", mp->ml_host);
397 print_dump(mp->ml_right);