2 * Copyright 2000 Massachusetts Institute of Technology
4 * Permission to use, copy, modify, and distribute this software and
5 * its documentation for any purpose and without fee is hereby
6 * granted, provided that both the above copyright notice and this
7 * permission notice appear in all copies, that both the above
8 * copyright notice and this permission notice appear in all
9 * supporting documentation, and that the name of M.I.T. not be used
10 * in advertising or publicity pertaining to distribution of the
11 * software without specific, written prior permission. M.I.T. makes
12 * no representations about the suitability of this software for any
13 * purpose. It is provided "as is" without express or implied
16 * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
17 * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
18 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
20 * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
23 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
26 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * $FreeBSD: src/usr.bin/getconf/getconf.c,v 1.6.2.1 2002/10/27 04:18:40 wollman Exp $
30 * $DragonFly: src/usr.bin/getconf/getconf.c,v 1.3 2003/11/04 20:25:45 dillon Exp $
33 #include <sys/types.h>
44 static void do_confstr(const char *name, int key);
45 static void do_sysconf(const char *name, int key);
46 static void do_pathconf(const char *name, int key, const char *path);
51 fprintf(stderr, "usage:\n"
52 "\tgetconf [-v prog_env] system_var\n"
53 "\tgetconf [-v prog_env] path_var pathname\n");
58 main(int argc, char **argv)
61 const char *name, *vflag, *alt_path;
65 while ((c = getopt(argc, argv, "v:")) != -1) {
76 if ((name = argv[optind]) == NULL)
80 if ((valid = find_progenv(vflag, &alt_path)) == 0)
81 errx(EX_USAGE, "invalid programming environment %s",
83 if (valid > 0 && alt_path != NULL) {
84 if (argv[optind + 1] == NULL)
85 execl(alt_path, "getconf", argv[optind],
88 execl(alt_path, "getconf", argv[optind],
89 argv[optind + 1], (char *)NULL);
91 err(EX_OSERR, "execl: %s", alt_path);
94 errx(EX_UNAVAILABLE, "environment %s is not available",
98 if (argv[optind + 1] == NULL) { /* confstr or sysconf */
99 if ((valid = find_limit(name, &limitval)) != 0) {
101 printf("%" GC_PRIdMAX "\n", limitval);
103 printf("undefined\n");
107 if ((valid = find_confstr(name, &key)) != 0) {
109 do_confstr(name, key);
111 printf("undefined\n");
113 valid = find_sysconf(name, &key);
115 do_sysconf(name, key);
116 } else if (valid < 0) {
117 printf("undefined\n");
120 "no such configuration parameter `%s'",
124 valid = find_pathconf(name, &key);
127 do_pathconf(name, key, argv[optind + 1]);
129 printf("undefined\n");
132 "no such path configuration parameter `%s'",
139 do_confstr(const char *name, int key)
144 len = confstr(key, 0, 0);
145 if (len == (size_t)-1)
146 err(EX_OSERR, "confstr: %s", name);
149 printf("undefined\n");
152 confstr(key, buf, len);
158 do_sysconf(const char *name, int key)
163 value = sysconf(key);
164 if (value == -1 && errno != 0)
165 err(EX_OSERR, "sysconf: %s", name);
166 else if (value == -1)
167 printf("undefined\n");
169 printf("%ld\n", value);
173 do_pathconf(const char *name, int key, const char *path)
178 value = pathconf(path, key);
179 if (value == -1 && errno != 0)
180 err(EX_OSERR, "pathconf: %s", name);
181 else if (value == -1)
182 printf("undefined\n");
184 printf("%ld\n", value);