1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30 /*
31 * University Copyright- Copyright (c) 1982, 1986, 1988
32 * The Regents of the University of California
33 * All Rights Reserved
34 *
35 * University Acknowledgment- Portions of this document are derived from
36 * software developed by the University of California, Berkeley, and its
37 * contributors.
38 */
39
40 /*
41 * nfs dfmounts
42 */
43 #include <stdio.h>
44 #include <stdlib.h>
45 #include <stdarg.h>
46 #include <string.h>
47 #include <rpc/rpc.h>
48 #include <rpc/rpcb_clnt.h>
49 #include <sys/socket.h>
50 #include <netdb.h>
51 #include <sys/time.h>
52 #include <sys/errno.h>
53 #include <nfs/nfs.h>
54 #include <rpcsvc/mount.h>
55 #include <locale.h>
56 #include <unistd.h>
57 #include <clnt_subr.h>
58
59 static int hflg;
60
61 static void pr_mounts(char *);
62 static void freemntlist(struct mountbody *);
63 static int sortpath(const void *, const void *);
64 static void usage(void);
65
66 int
main(int argc,char * argv[])67 main(int argc, char *argv[])
68 {
69
70 char hostbuf[256];
71 extern int optind;
72 int i, c;
73
74 (void) setlocale(LC_ALL, "");
75
76 #if !defined(TEXT_DOMAIN)
77 #define TEXT_DOMAIN "SYS_TEST"
78 #endif
79 (void) textdomain(TEXT_DOMAIN);
80
81 while ((c = getopt(argc, argv, "h")) != EOF) {
82 switch (c) {
83 case 'h':
84 hflg++;
85 break;
86 default:
87 usage();
88 exit(1);
89 }
90 }
91
92 if (optind < argc) {
93 for (i = optind; i < argc; i++)
94 pr_mounts(argv[i]);
95 } else {
96 if (gethostname(hostbuf, sizeof (hostbuf)) < 0) {
97 perror("nfs dfmounts: gethostname");
98 exit(1);
99 }
100 pr_mounts(hostbuf);
101 }
102
103 return (0);
104 }
105
106 #define NTABLEENTRIES 2048
107 static struct mountbody *table[NTABLEENTRIES];
108 static struct timeval rpc_totout_new = {15, 0};
109
110 /*
111 * Print the filesystems on "host" that are currently mounted by a client.
112 */
113
114 static void
pr_mounts(char * host)115 pr_mounts(char *host)
116 {
117 CLIENT *cl;
118 struct mountbody *ml = NULL;
119 struct mountbody **tb, **endtb;
120 enum clnt_stat err;
121 char *lastpath;
122 char *lastclient;
123 int tail = 0;
124 struct timeval tout, rpc_totout_old;
125
126 (void) __rpc_control(CLCR_GET_RPCB_TIMEOUT, &rpc_totout_old);
127 (void) __rpc_control(CLCR_SET_RPCB_TIMEOUT, &rpc_totout_new);
128
129 cl = mountprog_client_create(host, &rpc_totout_old);
130 if (cl == NULL) {
131 return;
132 }
133
134 (void) __rpc_control(CLCR_SET_RPCB_TIMEOUT, &rpc_totout_old);
135 tout.tv_sec = 10;
136 tout.tv_usec = 0;
137
138 err = clnt_call(cl, MOUNTPROC_DUMP, xdr_void, 0, xdr_mountlist,
139 (caddr_t)&ml, tout);
140 if (err != 0) {
141 pr_err("%s\n", clnt_sperrno(err));
142 clnt_destroy(cl);
143 return;
144 }
145
146 if (ml == NULL)
147 return; /* no mounts */
148
149 if (!hflg) {
150 printf("%-8s %10s %-24s %s",
151 gettext("RESOURCE"), gettext("SERVER"),
152 gettext("PATHNAME"), gettext("CLIENTS"));
153 hflg++;
154 }
155
156 /*
157 * Create an array describing the mounts, so that we can sort them.
158 */
159 tb = table;
160 for (; ml != NULL && tb < &table[NTABLEENTRIES]; ml = ml->ml_next)
161 *tb++ = ml;
162 if (ml != NULL && tb == &table[NTABLEENTRIES])
163 pr_err(gettext("table overflow: only %d entries shown\n"),
164 NTABLEENTRIES);
165 endtb = tb;
166 qsort(table, endtb - table, sizeof (struct mountbody *), sortpath);
167
168 /*
169 * Print out the sorted array. Group entries for the same
170 * filesystem together, and ignore duplicate entries.
171 */
172 lastpath = "";
173 lastclient = "";
174 for (tb = table; tb < endtb; tb++) {
175 if (*((*tb)->ml_directory) == '\0' ||
176 *((*tb)->ml_hostname) == '\0')
177 continue;
178 if (strcmp(lastpath, (*tb)->ml_directory) == 0) {
179 if (strcmp(lastclient, (*tb)->ml_hostname) == 0) {
180 continue; /* ignore duplicate */
181 }
182 } else {
183 printf("\n%-8s %10s %-24s ",
184 " -", host, (*tb)->ml_directory);
185 lastpath = (*tb)->ml_directory;
186 tail = 0;
187 }
188 if (tail++)
189 printf(",");
190 printf("%s", (*tb)->ml_hostname);
191 lastclient = (*tb)->ml_hostname;
192 }
193 printf("\n");
194
195 freemntlist(ml);
196 clnt_destroy(cl);
197 }
198
199 static void
freemntlist(struct mountbody * ml)200 freemntlist(struct mountbody *ml)
201 {
202 struct mountbody *old;
203
204 while (ml) {
205 if (ml->ml_hostname)
206 free(ml->ml_hostname);
207 if (ml->ml_directory)
208 free(ml->ml_directory);
209 old = ml;
210 ml = ml->ml_next;
211 free(old);
212 }
213 }
214
215 /*
216 * Compare two structs for mounted filesystems. The primary sort key is
217 * the name of the exported filesystem. There is also a secondary sort on
218 * the name of the client, so that duplicate entries (same path and
219 * hostname) will sort together.
220 *
221 * Returns < 0 if the first entry sorts before the second entry, 0 if they
222 * sort the same, and > 0 if the first entry sorts after the second entry.
223 */
224
225 static int
sortpath(const void * a,const void * b)226 sortpath(const void *a, const void *b)
227 {
228 const struct mountbody **m1, **m2;
229 int result;
230
231 m1 = (const struct mountbody **)a;
232 m2 = (const struct mountbody **)b;
233
234 result = strcmp((*m1)->ml_directory, (*m2)->ml_directory);
235 if (result == 0) {
236 result = strcmp((*m1)->ml_hostname, (*m2)->ml_hostname);
237 }
238
239 return (result);
240 }
241
242 static void
usage(void)243 usage(void)
244 {
245 (void) fprintf(stderr, gettext("Usage: dfmounts [-h] [host ...]\n"));
246 }
247
248 void
pr_err(char * fmt,...)249 pr_err(char *fmt, ...)
250 {
251 va_list ap;
252
253 va_start(ap, fmt);
254 (void) fprintf(stderr, "nfs dfmounts: ");
255 (void) vfprintf(stderr, fmt, ap);
256 va_end(ap);
257 }
258