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 <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 void print_dump(struct mountlist
*);
87 static void usage(void);
88 int xdr_mntdump(XDR
*, struct mountlist
**);
89 int xdr_exports(XDR
*, struct exportslist
**);
90 int tcp_callrpc(const char *, int, int, int, xdrproc_t
, char *, xdrproc_t
,
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;
107 int ch
, estat
, nbytes
;
108 char strvised
[1024 * 4 + 1];
110 while ((ch
= getopt(argc
, argv
, "adEe3")) != -1)
127 rpcs
|= DOPARSABLEEXPORTS
;
142 if ((rpcs
& DOPARSABLEEXPORTS
) != 0) {
143 if ((rpcs
& DOEXPORTS
) != 0)
144 errx(1, "-E cannot be used with -e");
145 if ((rpcs
& DODUMP
) != 0)
146 errx(1, "-E cannot be used with -a or -d");
158 if ((estat
= tcp_callrpc(host
, RPCPROG_MNT
, mntvers
,
159 RPCMNT_DUMP
, (xdrproc_t
)xdr_void
, NULL
,
160 (xdrproc_t
)xdr_mntdump
, (char *)&mntdump
)) != 0) {
162 errx(1, "can't do mountdump rpc");
164 if (rpcs
& (DOEXPORTS
| DOPARSABLEEXPORTS
))
165 if ((estat
= tcp_callrpc(host
, RPCPROG_MNT
, mntvers
,
166 RPCMNT_EXPORT
, (xdrproc_t
)xdr_void
, NULL
,
167 (xdrproc_t
)xdr_exports
, (char *)&exports
)) != 0) {
169 errx(1, "can't do exports rpc");
172 /* Now just print out the results */
176 printf("All mount points on %s:\n", host
);
179 printf("Directories on %s:\n", host
);
182 printf("Hosts on %s:\n", host
);
187 if (rpcs
& DOEXPORTS
) {
188 printf("Exports list on %s:\n", host
);
191 printf("%-35s", exp
->ex_dirp
);
192 grp
= exp
->ex_groups
;
194 printf("Everyone\n");
197 printf("%s ", grp
->gr_name
);
205 if (rpcs
& DOPARSABLEEXPORTS
) {
208 nbytes
= strnvis(strvised
, exp
->ex_dirp
,
209 sizeof(strvised
), VIS_GLOB
| VIS_NL
);
212 printf("%s\n", strvised
);
220 * tcp_callrpc has the same interface as callrpc, but tries to
221 * use tcp as transport method in order to handle large replies.
224 tcp_callrpc(const char *host
, int prognum
, int versnum
, int procnum
,
225 xdrproc_t inproc
, char *in
, xdrproc_t outproc
, char *out
)
228 struct timeval timeout
;
231 if ((client
= clnt_create(host
, prognum
, versnum
, "tcp")) == NULL
&&
232 (client
= clnt_create(host
, prognum
, versnum
, "udp")) == NULL
)
233 return ((int) rpc_createerr
.cf_stat
);
237 rval
= (int) clnt_call(client
, procnum
,
241 clnt_destroy(client
);
246 * Xdr routine for retrieving the mount dump list
249 xdr_mntdump(XDR
*xdrsp
, struct mountlist
**mlp
)
251 struct mountlist
*mp
;
252 struct mountlist
*tp
;
253 struct mountlist
**otp
= NULL
;
259 if (!xdr_bool(xdrsp
, &bool))
262 mp
= (struct mountlist
*)malloc(sizeof(struct mountlist
));
265 mp
->ml_left
= mp
->ml_right
= NULL
;
267 if (!xdr_string(xdrsp
, &strp
, RPCMNT_NAMELEN
))
270 if (!xdr_string(xdrsp
, &strp
, RPCMNT_PATHLEN
))
274 * Build a binary tree on sorted order of either host or dirp.
275 * Drop any duplications.
282 val
= strcmp(mp
->ml_host
, tp
->ml_host
);
283 val2
= strcmp(mp
->ml_dirp
, tp
->ml_dirp
);
319 if (!xdr_bool(xdrsp
, &bool))
326 * Xdr routine to retrieve exports list
329 xdr_exports(XDR
*xdrsp
, struct exportslist
**exp
)
331 struct exportslist
*ep
;
332 struct grouplist
*gp
;
337 if (!xdr_bool(xdrsp
, &bool))
340 ep
= (struct exportslist
*)malloc(sizeof(struct exportslist
));
343 ep
->ex_groups
= NULL
;
345 if (!xdr_string(xdrsp
, &strp
, RPCMNT_PATHLEN
))
347 if (!xdr_bool(xdrsp
, &grpbool
))
350 gp
= (struct grouplist
*)malloc(sizeof(struct grouplist
));
354 if (!xdr_string(xdrsp
, &strp
, RPCMNT_NAMELEN
))
356 gp
->gr_next
= ep
->ex_groups
;
358 if (!xdr_bool(xdrsp
, &grpbool
))
363 if (!xdr_bool(xdrsp
, &bool))
372 fprintf(stderr
, "usage: showmount [-a | -d] [-e3] [host]\n");
377 * Print the binary tree in inorder so that output is sorted.
380 print_dump(struct mountlist
*mp
)
386 print_dump(mp
->ml_left
);
389 printf("%s:%s\n", mp
->ml_host
, mp
->ml_dirp
);
392 printf("%s\n", mp
->ml_dirp
);
395 printf("%s\n", mp
->ml_host
);
399 print_dump(mp
->ml_right
);