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 $
41 #include <sys/types.h>
42 #include <sys/queue.h>
44 #include <sys/socket.h>
45 #include <sys/socketvar.h>
50 #include <rpc/pmap_clnt.h>
51 #include <rpc/pmap_prot.h>
52 #include <nfs/rpcv2.h>
67 struct mountlist *ml_left;
68 struct mountlist *ml_right;
69 char ml_host[RPCMNT_NAMELEN+1];
70 char ml_dirp[RPCMNT_PATHLEN+1];
74 struct grouplist *gr_next;
75 char gr_name[RPCMNT_NAMELEN+1];
79 struct exportslist *ex_next;
80 struct grouplist *ex_groups;
81 char ex_dirp[RPCMNT_PATHLEN+1];
84 static struct mountlist *mntdump;
85 static struct exportslist *exports;
88 void print_dump(struct mountlist *);
89 static void usage(void);
90 int xdr_mntdump(XDR *, struct mountlist **);
91 int xdr_exports(XDR *, struct exportslist **);
92 int tcp_callrpc(const char *, int, int, int, xdrproc_t, char *, xdrproc_t,
96 * This command queries the NFS mount daemon for it's mount list and/or
97 * it's exports list and prints them out.
98 * See "NFS: Network File System Protocol Specification, RFC1094, Appendix A"
99 * and the "Network File System Protocol XXX.."
100 * for detailed information on the protocol.
103 main(int argc, char **argv)
105 struct exportslist *exp;
106 struct grouplist *grp;
107 int rpcs = 0, mntvers = 1;
111 while ((ch = getopt(argc, argv, "ade3")) != -1)
149 if ((estat = tcp_callrpc(host, RPCPROG_MNT, mntvers,
150 RPCMNT_DUMP, (xdrproc_t)xdr_void, NULL,
151 (xdrproc_t)xdr_mntdump, (char *)&mntdump)) != 0) {
153 errx(1, "can't do mountdump rpc");
155 if (rpcs & DOEXPORTS)
156 if ((estat = tcp_callrpc(host, RPCPROG_MNT, mntvers,
157 RPCMNT_EXPORT, (xdrproc_t)xdr_void, NULL,
158 (xdrproc_t)xdr_exports, (char *)&exports)) != 0) {
160 errx(1, "can't do exports rpc");
163 /* Now just print out the results */
167 printf("All mount points on %s:\n", host);
170 printf("Directories on %s:\n", host);
173 printf("Hosts on %s:\n", host);
178 if (rpcs & DOEXPORTS) {
179 printf("Exports list on %s:\n", host);
182 printf("%-35s", exp->ex_dirp);
183 grp = exp->ex_groups;
185 printf("Everyone\n");
188 printf("%s ", grp->gr_name);
200 * tcp_callrpc has the same interface as callrpc, but tries to
201 * use tcp as transport method in order to handle large replies.
204 tcp_callrpc(const char *host, int prognum, int versnum, int procnum,
205 xdrproc_t inproc, char *in, xdrproc_t outproc, char *out)
208 struct timeval timeout;
211 if ((client = clnt_create(host, prognum, versnum, "tcp")) == NULL &&
212 (client = clnt_create(host, prognum, versnum, "udp")) == NULL)
213 return ((int) rpc_createerr.cf_stat);
217 rval = (int) clnt_call(client, procnum,
221 clnt_destroy(client);
226 * Xdr routine for retrieving the mount dump list
229 xdr_mntdump(XDR *xdrsp, struct mountlist **mlp)
231 struct mountlist *mp;
232 struct mountlist *tp;
233 struct mountlist **otp = NULL;
239 if (!xdr_bool(xdrsp, &bool))
242 mp = (struct mountlist *)malloc(sizeof(struct mountlist));
245 mp->ml_left = mp->ml_right = NULL;
247 if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN))
250 if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
254 * Build a binary tree on sorted order of either host or dirp.
255 * Drop any duplications.
262 val = strcmp(mp->ml_host, tp->ml_host);
263 val2 = strcmp(mp->ml_dirp, tp->ml_dirp);
299 if (!xdr_bool(xdrsp, &bool))
306 * Xdr routine to retrieve exports list
309 xdr_exports(XDR *xdrsp, struct exportslist **exp)
311 struct exportslist *ep;
312 struct grouplist *gp;
317 if (!xdr_bool(xdrsp, &bool))
320 ep = (struct exportslist *)malloc(sizeof(struct exportslist));
323 ep->ex_groups = NULL;
325 if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
327 if (!xdr_bool(xdrsp, &grpbool))
330 gp = (struct grouplist *)malloc(sizeof(struct grouplist));
334 if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN))
336 gp->gr_next = ep->ex_groups;
338 if (!xdr_bool(xdrsp, &grpbool))
343 if (!xdr_bool(xdrsp, &bool))
352 fprintf(stderr, "usage: showmount [-a | -d] [-e3] [host]\n");
357 * Print the binary tree in inorder so that output is sorted.
360 print_dump(struct mountlist *mp)
366 print_dump(mp->ml_left);
369 printf("%s:%s\n", mp->ml_host, mp->ml_dirp);
372 printf("%s\n", mp->ml_dirp);
375 printf("%s\n", mp->ml_host);
379 print_dump(mp->ml_right);