Annotation of src/usr.bin/getconf/getconf.c, Revision 1.10
1.10 ! otto 1: /* $OpenBSD: getconf.c,v 1.9 2003/07/10 00:06:51 david Exp $ */
1.3 deraadt 2:
1.2 deraadt 3: /*-
4: * Copyright (c) 1996 The NetBSD Foundation, Inc.
1.1 deraadt 5: * All rights reserved.
6: *
1.2 deraadt 7: * This code is derived from software contributed to The NetBSD Foundation
8: * by J.T. Conklin.
9: *
1.1 deraadt 10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by Winning Strategies, Inc.
21: * 4. The name of the author may not be used to endorse or promote products
22: * derived from this software without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
25: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
26: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
27: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
28: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
29: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
33: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34: */
35:
36: /*
37: * POSIX.2 getconf utility
38: *
39: * Written by:
40: * J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
41: */
42:
43: #ifndef lint
1.10 ! otto 44: static char rcsid[] = "$OpenBSD: getconf.c,v 1.9 2003/07/10 00:06:51 david Exp $";
1.1 deraadt 45: #endif /* not lint */
46:
47: #include <stdio.h>
48: #include <stdlib.h>
1.9 david 49: #include <string.h>
1.1 deraadt 50: #include <limits.h>
51: #include <locale.h>
52: #include <unistd.h>
1.5 deraadt 53: #include <err.h>
1.1 deraadt 54: #include <errno.h>
55:
1.6 millert 56: static void usage(void);
1.1 deraadt 57:
58: struct conf_variable
59: {
60: const char *name;
61: enum { SYSCONF, CONFSTR, PATHCONF, CONSTANT } type;
62: long value;
63: };
64:
65: const struct conf_variable conf_table[] =
66: {
67: { "PATH", CONFSTR, _CS_PATH },
68:
69: /* Utility Limit Minimum Values */
70: { "POSIX2_BC_BASE_MAX", CONSTANT, _POSIX2_BC_BASE_MAX },
71: { "POSIX2_BC_DIM_MAX", CONSTANT, _POSIX2_BC_DIM_MAX },
72: { "POSIX2_BC_SCALE_MAX", CONSTANT, _POSIX2_BC_SCALE_MAX },
73: { "POSIX2_BC_STRING_MAX", CONSTANT, _POSIX2_BC_STRING_MAX },
74: { "POSIX2_COLL_WEIGHTS_MAX", CONSTANT, _POSIX2_COLL_WEIGHTS_MAX },
75: { "POSIX2_EXPR_NEST_MAX", CONSTANT, _POSIX2_EXPR_NEST_MAX },
76: { "POSIX2_LINE_MAX", CONSTANT, _POSIX2_LINE_MAX },
77: { "POSIX2_RE_DUP_MAX", CONSTANT, _POSIX2_RE_DUP_MAX },
78: { "POSIX2_VERSION", CONSTANT, _POSIX2_VERSION },
79:
80: /* POSIX.1 Minimum Values */
81: { "_POSIX_ARG_MAX", CONSTANT, _POSIX_ARG_MAX },
82: { "_POSIX_CHILD_MAX", CONSTANT, _POSIX_CHILD_MAX },
83: { "_POSIX_LINK_MAX", CONSTANT, _POSIX_LINK_MAX },
84: { "_POSIX_MAX_CANON", CONSTANT, _POSIX_MAX_CANON },
85: { "_POSIX_MAX_INPUT", CONSTANT, _POSIX_MAX_INPUT },
86: { "_POSIX_NAME_MAX", CONSTANT, _POSIX_NAME_MAX },
87: { "_POSIX_NGROUPS_MAX", CONSTANT, _POSIX_NGROUPS_MAX },
88: { "_POSIX_OPEN_MAX", CONSTANT, _POSIX_OPEN_MAX },
1.7 pjanzen 89: { "_POSIX_PATH_MAX", CONSTANT, _POSIX_PATH_MAX },
1.1 deraadt 90: { "_POSIX_PIPE_BUF", CONSTANT, _POSIX_PIPE_BUF },
91: { "_POSIX_SSIZE_MAX", CONSTANT, _POSIX_SSIZE_MAX },
92: { "_POSIX_STREAM_MAX", CONSTANT, _POSIX_STREAM_MAX },
93: { "_POSIX_TZNAME_MAX", CONSTANT, _POSIX_TZNAME_MAX },
94:
95: /* Symbolic Utility Limits */
96: { "BC_BASE_MAX", SYSCONF, _SC_BC_BASE_MAX },
97: { "BC_DIM_MAX", SYSCONF, _SC_BC_DIM_MAX },
98: { "BC_SCALE_MAX", SYSCONF, _SC_BC_SCALE_MAX },
99: { "BC_STRING_MAX", SYSCONF, _SC_BC_STRING_MAX },
100: { "COLL_WEIGHTS_MAX", SYSCONF, _SC_COLL_WEIGHTS_MAX },
101: { "EXPR_NEST_MAX", SYSCONF, _SC_EXPR_NEST_MAX },
102: { "LINE_MAX", SYSCONF, _SC_LINE_MAX },
103: { "RE_DUP_MAX", SYSCONF, _SC_RE_DUP_MAX },
104:
105: /* Optional Facility Configuration Values */
106: #if 0
107: { "POSIX2_C_BIND", SYSCONF, ??? },
108: #endif
109: { "POSIX2_C_DEV", SYSCONF, _SC_2_C_DEV },
110: { "POSIX2_CHAR_TERM", SYSCONF, _SC_2_CHAR_TERM },
111: { "POSIX2_FORT_DEV", SYSCONF, _SC_2_FORT_DEV },
112: { "POSIX2_FORT_RUN", SYSCONF, _SC_2_FORT_RUN },
113: { "POSIX2_LOCALEDEF", SYSCONF, _SC_2_LOCALEDEF },
114: { "POSIX2_SW_DEV", SYSCONF, _SC_2_SW_DEV },
115: { "POSIX2_UPE", SYSCONF, _SC_2_UPE },
116:
117: /* POSIX.1 Configurable System Variables */
118: { "ARG_MAX", SYSCONF, _SC_ARG_MAX },
119: { "CHILD_MAX", SYSCONF, _SC_CHILD_MAX },
120: { "CLK_TCK", SYSCONF, _SC_CLK_TCK },
121: { "NGROUPS_MAX", SYSCONF, _SC_NGROUPS_MAX },
122: { "OPEN_MAX", SYSCONF, _SC_OPEN_MAX },
123: { "STREAM_MAX", SYSCONF, _SC_STREAM_MAX },
124: { "TZNAME_MAX", SYSCONF, _SC_TZNAME_MAX },
125: { "_POSIX_JOB_CONTROL", SYSCONF, _SC_JOB_CONTROL },
126: { "_POSIX_SAVED_IDS", SYSCONF, _SC_SAVED_IDS },
127: { "_POSIX_VERSION", SYSCONF, _SC_VERSION },
128:
129: { "LINK_MAX", PATHCONF, _PC_LINK_MAX },
130: { "MAX_CANON", PATHCONF, _PC_MAX_CANON },
131: { "MAX_INPUT", PATHCONF, _PC_MAX_INPUT },
132: { "NAME_MAX", PATHCONF, _PC_NAME_MAX },
133: { "PATH_MAX", PATHCONF, _PC_PATH_MAX },
134: { "PIPE_BUF", PATHCONF, _PC_PIPE_BUF },
135: { "_POSIX_CHOWN_RESTRICTED", PATHCONF, _PC_CHOWN_RESTRICTED },
136: { "_POSIX_NO_TRUNC", PATHCONF, _PC_NO_TRUNC },
137: { "_POSIX_VDISABLE", PATHCONF, _PC_VDISABLE },
138:
139: { NULL }
140: };
141:
142:
143: int
1.8 deraadt 144: main(int argc, char *argv[])
1.1 deraadt 145: {
146: int ch;
147: const struct conf_variable *cp;
148:
149: long val;
150: size_t slen;
151: char * sval;
152:
153: setlocale(LC_ALL, "");
154:
155: while ((ch = getopt(argc, argv, "")) != -1) {
156: switch (ch) {
157: case '?':
158: default:
159: usage();
160: }
161: }
162: argc -= optind;
163: argv += optind;
164:
165: if (argc < 1 || argc > 2) {
166: usage();
167: /* NOTREACHED */
168: }
169:
170: for (cp = conf_table; cp->name != NULL; cp++) {
171: if (strcmp(*argv, cp->name) == 0)
172: break;
173: }
174: if (cp->name == NULL) {
1.2 deraadt 175: errx(1, "%s: unknown variable", *argv);
1.1 deraadt 176: /* NOTREACHED */
177: }
178:
179: if (cp->type == PATHCONF) {
180: if (argc != 2) usage();
181: } else {
182: if (argc != 1) usage();
183: }
184:
185: switch (cp->type) {
186: case CONSTANT:
187: printf("%ld\n", cp->value);
188: break;
189:
190: case CONFSTR:
1.10 ! otto 191: errno = 0;
1.1 deraadt 192: slen = confstr (cp->value, (char *) 0, (size_t) 0);
1.10 ! otto 193:
! 194: if (slen == 0 || slen == (size_t)-1) {
! 195: if (errno)
! 196: err(1, "%s", cp->value);
! 197: else
! 198: errx(1, "%s", cp->value);
! 199: }
1.1 deraadt 200: if ((sval = malloc(slen)) == NULL)
201: err(1, NULL);
202:
203: confstr(cp->value, sval, slen);
204: printf("%s\n", sval);
205: break;
206:
207: case SYSCONF:
208: errno = 0;
209: if ((val = sysconf(cp->value)) == -1) {
210: if (errno != 0) {
211: err(1, NULL);
212: /* NOTREACHED */
213: }
214:
215: printf ("undefined\n");
216: } else {
217: printf("%ld\n", val);
218: }
219: break;
220:
221: case PATHCONF:
222: errno = 0;
223: if ((val = pathconf(argv[1], cp->value)) == -1) {
224: if (errno != 0) {
225: err(1, "%s", argv[1]);
226: /* NOTREACHED */
227: }
228:
229: printf ("undefined\n");
230: } else {
231: printf ("%ld\n", val);
232: }
233: break;
234: }
235:
236: exit (ferror(stdout));
237: }
238:
239:
240: static void
1.8 deraadt 241: usage(void)
1.1 deraadt 242: {
1.4 aaron 243: extern char *__progname;
244:
245: (void)fprintf(stderr, "usage: %s name [pathname]\n", __progname);
246: exit(1);
1.1 deraadt 247: }
![[BACK]](/icons/back.gif){kind=icon}
Return to getconf.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / getconf