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1 | /* |
2 | * Copyright (c) 1989 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * This code is derived from software contributed to Berkeley by | |
6 | * Rick Macklem at The University of Guelph. | |
7 | * | |
cb956e54 | 8 | * %sccs.include.redist.c% |
7918c07a KM |
9 | */ |
10 | ||
11 | #ifndef lint | |
12 | char copyright[] = | |
13 | "@(#) Copyright (c) 1989 Regents of the University of California.\n\ | |
14 | All rights reserved.\n"; | |
15 | #endif not lint | |
16 | ||
17 | #ifndef lint | |
cb956e54 | 18 | static char sccsid[] = "@(#)showmount.c 6.4 (Berkeley) %G%"; |
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19 | #endif not lint |
20 | ||
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21 | #include <sys/types.h> |
22 | #include <sys/file.h> | |
23 | #include <sys/socket.h> | |
24 | #include <sys/socketvar.h> | |
25 | #include <netdb.h> | |
26 | #include <rpc/rpc.h> | |
27 | #include <rpc/pmap_clnt.h> | |
28 | #include <rpc/pmap_prot.h> | |
29 | #include <nfs/rpcv2.h> | |
38dde0cd KB |
30 | #include <stdio.h> |
31 | #include <string.h> | |
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32 | |
33 | /* Constant defs */ | |
34 | #define ALL 1 | |
35 | #define DIRS 2 | |
36 | ||
37 | #define DODUMP 0x1 | |
38 | #define DOEXPORTS 0x2 | |
39 | ||
40 | struct mountlist { | |
41 | struct mountlist *ml_left; | |
42 | struct mountlist *ml_right; | |
43 | char ml_host[RPCMNT_NAMELEN+1]; | |
44 | char ml_dirp[RPCMNT_PATHLEN+1]; | |
45 | }; | |
46 | ||
47 | struct grouplist { | |
48 | struct grouplist *gr_next; | |
49 | char gr_name[RPCMNT_NAMELEN+1]; | |
50 | }; | |
51 | ||
52 | struct exportslist { | |
53 | struct exportslist *ex_next; | |
54 | struct grouplist *ex_groups; | |
55 | char ex_dirp[RPCMNT_PATHLEN+1]; | |
56 | }; | |
57 | ||
58 | static struct mountlist *mntdump; | |
59 | static struct exportslist *exports; | |
60 | static int type = 0; | |
61 | int xdr_mntdump(), xdr_exports(); | |
62 | ||
63 | /* | |
64 | * This command queries the NFS mount daemon for it's mount list and/or | |
65 | * it's exports list and prints them out. | |
66 | * See "NFS: Network File System Protocol Specification, RFC1094, Appendix A" | |
67 | * for detailed information on the protocol. | |
68 | */ | |
69 | main(argc, argv) | |
70 | int argc; | |
71 | char **argv; | |
72 | { | |
73 | register struct mountlist *mntp; | |
74 | register struct exportslist *exp; | |
75 | register struct grouplist *grp; | |
76 | extern char *optarg; | |
77 | extern int optind; | |
78 | register int rpcs = 0; | |
79 | char ch; | |
80 | char *host; | |
81 | int estat; | |
82 | ||
83 | while ((ch = getopt(argc, argv, "ade")) != EOF) | |
84 | switch((char)ch) { | |
85 | case 'a': | |
86 | if (type == 0) { | |
87 | type = ALL; | |
88 | rpcs |= DODUMP; | |
89 | } else | |
90 | usage(); | |
91 | break; | |
92 | case 'd': | |
93 | if (type == 0) { | |
94 | type = DIRS; | |
95 | rpcs |= DODUMP; | |
96 | } else | |
97 | usage(); | |
98 | break; | |
99 | case 'e': | |
100 | rpcs |= DOEXPORTS; | |
101 | break; | |
102 | case '?': | |
103 | default: | |
104 | usage(); | |
105 | } | |
106 | argc -= optind; | |
107 | argv += optind; | |
108 | ||
109 | if (argc > 0) | |
110 | host = *argv; | |
111 | else | |
112 | host = "localhost"; | |
113 | ||
114 | if (rpcs == 0) | |
115 | rpcs = DODUMP; | |
116 | ||
117 | if (rpcs & DODUMP) | |
118 | if ((estat = callrpc(host, RPCPROG_MNT, RPCMNT_VER1, | |
119 | RPCMNT_DUMP, xdr_void, (char *)0, | |
120 | xdr_mntdump, (char *)&mntdump)) != 0) { | |
121 | clnt_perrno(estat); | |
122 | fprintf(stderr, "Can't do Mountdump rpc\n"); | |
123 | exit(1); | |
124 | } | |
125 | if (rpcs & DOEXPORTS) | |
126 | if ((estat = callrpc(host, RPCPROG_MNT, RPCMNT_VER1, | |
127 | RPCMNT_EXPORT, xdr_void, (char *)0, | |
128 | xdr_exports, (char *)&exports)) != 0) { | |
129 | clnt_perrno(estat); | |
130 | fprintf(stderr, "Can't do Exports rpc\n"); | |
131 | exit(1); | |
132 | } | |
133 | ||
134 | /* Now just print out the results */ | |
135 | if (rpcs & DODUMP) { | |
136 | switch (type) { | |
137 | case ALL: | |
138 | printf("All mount points on %s:\n", host); | |
139 | break; | |
140 | case DIRS: | |
141 | printf("Directories on %s:\n", host); | |
142 | break; | |
143 | default: | |
144 | printf("Hosts on %s:\n", host); | |
145 | break; | |
146 | }; | |
147 | print_dump(mntdump); | |
148 | } | |
149 | if (rpcs & DOEXPORTS) { | |
150 | printf("Exports list on %s:\n", host); | |
151 | exp = exports; | |
152 | while (exp) { | |
153 | printf("%-35s", exp->ex_dirp); | |
154 | grp = exp->ex_groups; | |
155 | if (grp == NULL) { | |
156 | printf("Everyone\n"); | |
157 | } else { | |
158 | while (grp) { | |
159 | printf("%s ", grp->gr_name); | |
160 | grp = grp->gr_next; | |
161 | } | |
162 | printf("\n"); | |
163 | } | |
164 | exp = exp->ex_next; | |
165 | } | |
166 | } | |
167 | } | |
168 | ||
169 | /* | |
170 | * Xdr routine for retrieving the mount dump list | |
171 | */ | |
172 | xdr_mntdump(xdrsp, mlp) | |
173 | XDR *xdrsp; | |
174 | struct mountlist **mlp; | |
175 | { | |
176 | register struct mountlist *mp; | |
177 | register struct mountlist *tp; | |
178 | register struct mountlist **otp; | |
179 | int val, val2; | |
180 | int bool; | |
181 | char *strp; | |
182 | ||
183 | *mlp = (struct mountlist *)0; | |
184 | if (!xdr_bool(xdrsp, &bool)) | |
185 | return (0); | |
186 | while (bool) { | |
187 | mp = (struct mountlist *)malloc(sizeof(struct mountlist)); | |
188 | if (mp == NULL) | |
189 | return (0); | |
190 | mp->ml_left = mp->ml_right = (struct mountlist *)0; | |
191 | strp = mp->ml_host; | |
192 | if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN)) | |
193 | return (0); | |
194 | strp = mp->ml_dirp; | |
195 | if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) | |
196 | return (0); | |
197 | ||
198 | /* | |
199 | * Build a binary tree on sorted order of either host or dirp. | |
200 | * Drop any duplications. | |
201 | */ | |
202 | if (*mlp == NULL) { | |
203 | *mlp = mp; | |
204 | } else { | |
205 | tp = *mlp; | |
206 | while (tp) { | |
207 | val = strcmp(mp->ml_host, tp->ml_host); | |
208 | val2 = strcmp(mp->ml_dirp, tp->ml_dirp); | |
209 | switch (type) { | |
210 | case ALL: | |
211 | if (val == 0) { | |
212 | if (val2 == 0) { | |
213 | free((caddr_t)mp); | |
214 | goto next; | |
215 | } | |
216 | val = val2; | |
217 | } | |
218 | break; | |
219 | case DIRS: | |
220 | if (val2 == 0) { | |
221 | free((caddr_t)mp); | |
222 | goto next; | |
223 | } | |
224 | val = val2; | |
225 | break; | |
226 | default: | |
227 | if (val == 0) { | |
228 | free((caddr_t)mp); | |
229 | goto next; | |
230 | } | |
231 | break; | |
232 | }; | |
233 | if (val < 0) { | |
234 | otp = &tp->ml_left; | |
235 | tp = tp->ml_left; | |
236 | } else { | |
237 | otp = &tp->ml_right; | |
238 | tp = tp->ml_right; | |
239 | } | |
240 | } | |
241 | *otp = mp; | |
242 | } | |
243 | next: | |
244 | if (!xdr_bool(xdrsp, &bool)) | |
245 | return (0); | |
246 | } | |
247 | return (1); | |
248 | } | |
249 | ||
250 | /* | |
251 | * Xdr routine to retrieve exports list | |
252 | */ | |
253 | xdr_exports(xdrsp, exp) | |
254 | XDR *xdrsp; | |
255 | struct exportslist **exp; | |
256 | { | |
257 | register struct exportslist *ep; | |
258 | register struct grouplist *gp; | |
259 | int bool, grpbool; | |
260 | char *strp; | |
261 | ||
262 | *exp = (struct exportslist *)0; | |
263 | if (!xdr_bool(xdrsp, &bool)) | |
264 | return (0); | |
265 | while (bool) { | |
266 | ep = (struct exportslist *)malloc(sizeof(struct exportslist)); | |
267 | if (ep == NULL) | |
268 | return (0); | |
269 | ep->ex_groups = (struct grouplist *)0; | |
270 | strp = ep->ex_dirp; | |
271 | if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) | |
272 | return (0); | |
273 | if (!xdr_bool(xdrsp, &grpbool)) | |
274 | return (0); | |
275 | while (grpbool) { | |
276 | gp = (struct grouplist *)malloc(sizeof(struct grouplist)); | |
277 | if (gp == NULL) | |
278 | return (0); | |
279 | strp = gp->gr_name; | |
280 | if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN)) | |
281 | return (0); | |
282 | gp->gr_next = ep->ex_groups; | |
283 | ep->ex_groups = gp; | |
284 | if (!xdr_bool(xdrsp, &grpbool)) | |
285 | return (0); | |
286 | } | |
287 | ep->ex_next = *exp; | |
288 | *exp = ep; | |
289 | if (!xdr_bool(xdrsp, &bool)) | |
290 | return (0); | |
291 | } | |
292 | return (1); | |
293 | } | |
294 | ||
295 | static | |
296 | usage() | |
297 | { | |
298 | fprintf(stderr, "Usage: showmount [-ade] host\n"); | |
299 | exit(1); | |
300 | } | |
301 | ||
302 | /* | |
303 | * Print the binary tree in inorder so that output is sorted. | |
304 | */ | |
305 | print_dump(mp) | |
306 | struct mountlist *mp; | |
307 | { | |
308 | ||
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309 | if (mp == NULL) |
310 | return; | |
7918c07a KM |
311 | if (mp->ml_left) |
312 | print_dump(mp->ml_left); | |
313 | switch (type) { | |
314 | case ALL: | |
315 | printf("%s:%s\n", mp->ml_host, mp->ml_dirp); | |
316 | break; | |
317 | case DIRS: | |
318 | printf("%s\n", mp->ml_dirp); | |
319 | break; | |
320 | default: | |
321 | printf("%s\n", mp->ml_host); | |
322 | break; | |
323 | }; | |
324 | if (mp->ml_right) | |
325 | print_dump(mp->ml_right); | |
326 | } |