1 /*
2 * Copyright (c) 1997-2014 Erez Zadok
3 * Copyright (c) 1989 Jan-Simon Pendry
4 * Copyright (c) 1989 Imperial College of Science, Technology & Medicine
5 * Copyright (c) 1989 The Regents of the University of California.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Jan-Simon Pendry at Imperial College, London.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 *
36 * File: am-utils/fsinfo/fsinfo.c
37 *
38 */
39
40 /*
41 * fsinfo
42 */
43
44 #ifdef HAVE_CONFIG_H
45 # include <config.h>
46 #endif /* HAVE_CONFIG_H */
47 #include <am_defs.h>
48 #include <fsi_data.h>
49 #include <fsinfo.h>
50 #include <fsi_gram.h>
51
52 /* globals */
53 char **g_argv;
54 char *autodir = "/a";
55 char *progname;
56 char hostname[MAXHOSTNAMELEN + 1];
57 char *username;
58 char idvbuf[1024];
59 dict *dict_of_hosts;
60 dict *dict_of_volnames;
61 int errors;
62 int file_io_errors;
63 int parse_errors;
64 int verbose;
65 qelem *list_of_automounts;
66 qelem *list_of_hosts;
67
68 /*
69 * Output file prefixes
70 */
71 char *bootparams_pref;
72 char *dumpset_pref;
73 char *exportfs_pref;
74 char *fstab_pref;
75 char *mount_pref;
76
77
78 /*
79 * Argument cracking...
80 */
81 static void
fsi_get_args(int c,char * v[])82 fsi_get_args(int c, char *v[])
83 {
84 int ch;
85 int usage = 0;
86 char *iptr = idvbuf;
87
88 /*
89 * Determine program name
90 */
91 if (v[0]) {
92 progname = strrchr(v[0], '/');
93 if (progname && progname[1])
94 progname++;
95 else
96 progname = v[0];
97 }
98
99 if (!progname)
100 progname = "fsinfo";
101
102 while ((ch = getopt(c, v, "a:b:d:e:f:h:m:D:U:I:qv")) != -1)
103
104 switch (ch) {
105
106 case 'a':
107 autodir = optarg;
108 break;
109
110 case 'b':
111 if (bootparams_pref)
112 fatal("-b option specified twice");
113 bootparams_pref = optarg;
114 break;
115
116 case 'd':
117 if (dumpset_pref)
118 fatal("-d option specified twice");
119 dumpset_pref = optarg;
120 break;
121
122 case 'h':
123 xstrlcpy(hostname, optarg, sizeof(hostname));
124 break;
125
126 case 'e':
127 if (exportfs_pref)
128 fatal("-e option specified twice");
129 exportfs_pref = optarg;
130 break;
131
132 case 'f':
133 if (fstab_pref)
134 fatal("-f option specified twice");
135 fstab_pref = optarg;
136 break;
137
138 case 'm':
139 if (mount_pref)
140 fatal("-m option specified twice");
141 mount_pref = optarg;
142 break;
143
144 case 'q':
145 verbose = -1;
146 break;
147
148 case 'v':
149 verbose = 1;
150 break;
151
152 case 'I':
153 case 'D':
154 case 'U':
155 /* sizeof(iptr) is actually that of idvbuf. See declaration above */
156 xsnprintf(iptr, sizeof(idvbuf), "-%c%s ", ch, optarg);
157 iptr += strlen(iptr);
158 break;
159
160 default:
161 usage++;
162 break;
163 }
164
165 if (c != optind) {
166 g_argv = v + optind - 1;
167 #ifdef yywrap
168 if (yywrap())
169 #endif /* yywrap */
170 fatal("Cannot read any input files");
171 } else {
172 usage++;
173 }
174
175 if (usage) {
176 fprintf(stderr,
177 "\
178 Usage: %s [-v] [-a autodir] [-h hostname] [-b bootparams] [-d dumpsets]\n\
179 \t[-e exports] [-f fstabs] [-m automounts]\n\
180 \t[-I dir] [-D|-U string[=string]] config ...\n", progname);
181 exit(1);
182 }
183
184 if (g_argv[0])
185 fsi_log("g_argv[0] = %s", g_argv[0]);
186 else
187 fsi_log("g_argv[0] = (nil)");
188 }
189
190
191 /*
192 * Determine username of caller
193 */
194 static char *
find_username(void)195 find_username(void)
196 {
197 const char *u = getlogin();
198
199 if (!u) {
200 struct passwd *pw = getpwuid(getuid());
201 if (pw)
202 u = pw->pw_name;
203 }
204
205 if (!u)
206 u = getenv("USER");
207 if (!u)
208 u = getenv("LOGNAME");
209 if (!u)
210 u = "root";
211
212 return xstrdup(u);
213 }
214
215
216 /*
217 * MAIN
218 */
219 int
main(int argc,char * argv[])220 main(int argc, char *argv[])
221 {
222 /*
223 * Process arguments
224 */
225 fsi_get_args(argc, argv);
226
227 /*
228 * If no hostname given then use the local name
229 */
230 if (!*hostname && gethostname(hostname, sizeof(hostname)) < 0) {
231 perror("gethostname");
232 exit(1);
233 }
234 hostname[sizeof(hostname) - 1] = '\0';
235
236 /*
237 * Get the username
238 */
239 username = find_username();
240
241 /*
242 * New hosts and automounts
243 */
244 list_of_hosts = new_que();
245 list_of_automounts = new_que();
246
247 /*
248 * New dictionaries
249 */
250 dict_of_volnames = new_dict();
251 dict_of_hosts = new_dict();
252
253 /*
254 * Parse input
255 */
256 show_area_being_processed("read config", 11);
257 if (fsi_parse())
258 errors = 1;
259 errors += file_io_errors + parse_errors;
260
261 if (errors == 0) {
262 /*
263 * Do semantic analysis of input
264 */
265 analyze_hosts(list_of_hosts);
266 analyze_automounts(list_of_automounts);
267 }
268
269 /*
270 * Give up if errors
271 */
272 if (errors == 0) {
273 /*
274 * Output data files
275 */
276
277 write_atab(list_of_automounts);
278 write_bootparams(list_of_hosts);
279 write_dumpset(list_of_hosts);
280 write_exportfs(list_of_hosts);
281 write_fstab(list_of_hosts);
282 }
283 col_cleanup(1);
284
285 exit(errors);
286 return errors; /* should never reach here */
287 }
288