Annotation of src/usr.bin/env/env.c, Revision 1.13
1.13 ! millert 1: /* $OpenBSD: env.c,v 1.12 2006/05/28 05:29:54 ray Exp $ */
1.3 deraadt 2:
1.1 deraadt 3: /*
4: * Copyright (c) 1988, 1993, 1994
5: * The Regents of the University of California. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
1.9 millert 15: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 16: * may be used to endorse or promote products derived from this software
17: * without specific prior written permission.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: * SUCH DAMAGE.
30: */
31:
32: #ifndef lint
33: static char copyright[] =
34: "@(#) Copyright (c) 1988, 1993, 1994\n\
35: The Regents of the University of California. All rights reserved.\n";
36: #endif /* not lint */
37:
38: #ifndef lint
39: /*static char sccsid[] = "@(#)env.c 8.3 (Berkeley) 4/2/94";*/
1.13 ! millert 40: static char rcsid[] = "$OpenBSD: env.c,v 1.12 2006/05/28 05:29:54 ray Exp $";
1.1 deraadt 41: #endif /* not lint */
42:
43: #include <err.h>
1.11 ray 44: #include <errno.h>
45: #include <locale.h>
1.1 deraadt 46: #include <stdio.h>
1.11 ray 47: #include <stdlib.h>
1.1 deraadt 48: #include <string.h>
49: #include <unistd.h>
50:
1.11 ray 51: __dead void usage(void);
1.1 deraadt 52:
53: int
1.10 deraadt 54: main(int argc, char *argv[])
1.1 deraadt 55: {
56: extern char **environ;
1.2 deraadt 57: extern int optind;
1.1 deraadt 58: char **ep, *p;
59: int ch;
60:
61: setlocale(LC_ALL, "");
62:
1.12 ray 63: while ((ch = getopt(argc, argv, "i-")) != -1)
1.11 ray 64: switch(ch) {
1.12 ray 65: case '-': /* obsolete */
1.1 deraadt 66: case 'i':
1.11 ray 67: if ((environ = calloc(1, sizeof(char *))) == NULL)
1.5 deraadt 68: err(126, "calloc");
1.1 deraadt 69: break;
70: default:
71: usage();
72: }
1.11 ray 73: argc -= optind;
74: argv += optind;
1.1 deraadt 75:
1.13 ! millert 76: for (; *argv && (p = strchr(*argv, '=')); ++argv) {
! 77: *p++ = '\0';
! 78: if (setenv(*argv, p, 1) == -1) {
1.5 deraadt 79: /* reuse 126, it matches the problem most */
80: exit(126);
81: }
1.13 ! millert 82: }
1.1 deraadt 83:
84: if (*argv) {
1.5 deraadt 85: /*
86: * return 127 if the command to be run could not be
87: * found; 126 if the command was found but could
88: * not be invoked
89: */
1.1 deraadt 90: execvp(*argv, argv);
91: err((errno == ENOENT) ? 127 : 126, "%s", *argv);
92: }
93:
94: for (ep = environ; *ep; ep++)
95: (void)printf("%s\n", *ep);
96:
97: exit(0);
98: }
99:
1.5 deraadt 100: void
1.10 deraadt 101: usage(void)
1.1 deraadt 102: {
1.11 ray 103: extern char *__progname;
104:
105: (void)fprintf(stderr, "usage: %s [-i] [name=value ...] "
106: "[utility [argument ...]]\n", __progname);
107: exit(1);
1.1 deraadt 108: }