Annotation of src/usr.bin/env/env.c, Revision 1.6
1.6 ! aaron 1: /* $OpenBSD: env.c,v 1.5 2000/09/15 07:13:48 deraadt 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.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by the University of
18: * California, Berkeley and its contributors.
19: * 4. 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: #ifndef lint
37: static char copyright[] =
38: "@(#) Copyright (c) 1988, 1993, 1994\n\
39: The Regents of the University of California. All rights reserved.\n";
40: #endif /* not lint */
41:
42: #ifndef lint
43: /*static char sccsid[] = "@(#)env.c 8.3 (Berkeley) 4/2/94";*/
1.6 ! aaron 44: static char rcsid[] = "$OpenBSD: env.c,v 1.5 2000/09/15 07:13:48 deraadt Exp $";
1.1 deraadt 45: #endif /* not lint */
46:
47: #include <err.h>
48: #include <stdio.h>
49: #include <string.h>
50: #include <stdlib.h>
51: #include <unistd.h>
52: #include <locale.h>
53: #include <errno.h>
54:
1.5 deraadt 55: void usage __P((void));
1.1 deraadt 56:
57: int
58: main(argc, argv)
59: int argc;
60: char **argv;
61: {
62: extern char **environ;
1.2 deraadt 63: extern int optind;
1.1 deraadt 64: char **ep, *p;
65: int ch;
66:
67: setlocale(LC_ALL, "");
68:
69: while ((ch = getopt(argc, argv, "-i")) != -1)
70: switch((char)ch) {
71: case '-': /* obsolete */
72: case 'i':
1.4 deraadt 73: if ((environ = (char **)calloc(1, sizeof(char *))) == NULL)
1.5 deraadt 74: err(126, "calloc");
1.1 deraadt 75: break;
76: case '?':
77: default:
78: usage();
79: }
80:
81: for (argv += optind; *argv && (p = strchr(*argv, '=')); ++argv)
1.5 deraadt 82: if (setenv(*argv, ++p, 1) == -1) {
83: /* reuse 126, it matches the problem most */
84: exit(126);
85: }
1.1 deraadt 86:
87: if (*argv) {
1.5 deraadt 88: /*
89: * return 127 if the command to be run could not be
90: * found; 126 if the command was found but could
91: * not be invoked
92: */
1.1 deraadt 93: execvp(*argv, argv);
94: err((errno == ENOENT) ? 127 : 126, "%s", *argv);
95: /* NOTREACHED */
96: }
97:
98: for (ep = environ; *ep; ep++)
99: (void)printf("%s\n", *ep);
100:
101: exit(0);
102: }
103:
1.5 deraadt 104: void
105: usage()
1.1 deraadt 106: {
1.6 ! aaron 107: (void)fprintf(stderr, "usage: env [-i] [name=value ...] "
! 108: "[utility [argument ...]]\n");
1.1 deraadt 109: exit (1);
110: }