Annotation of src/usr.bin/env/env.c, Revision 1.10
1.10 ! deraadt 1: /* $OpenBSD: env.c,v 1.9 2003/06/03 02:56:07 millert 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";*/
1.10 ! deraadt 40: static char rcsid[] = "$OpenBSD: env.c,v 1.9 2003/06/03 02:56:07 millert Exp $";
1.1 deraadt 41: #endif /* not lint */
42:
43: #include <err.h>
44: #include <stdio.h>
45: #include <string.h>
46: #include <stdlib.h>
47: #include <unistd.h>
48: #include <locale.h>
49: #include <errno.h>
50:
1.7 millert 51: 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:
1.8 millert 63: while ((ch = getopt(argc, argv, "i-")) != -1)
1.1 deraadt 64: switch((char)ch) {
65: case '-': /* obsolete */
66: case 'i':
1.4 deraadt 67: if ((environ = (char **)calloc(1, sizeof(char *))) == NULL)
1.5 deraadt 68: err(126, "calloc");
1.1 deraadt 69: break;
70: case '?':
71: default:
72: usage();
73: }
74:
75: for (argv += optind; *argv && (p = strchr(*argv, '=')); ++argv)
1.5 deraadt 76: if (setenv(*argv, ++p, 1) == -1) {
77: /* reuse 126, it matches the problem most */
78: exit(126);
79: }
1.1 deraadt 80:
81: if (*argv) {
1.5 deraadt 82: /*
83: * return 127 if the command to be run could not be
84: * found; 126 if the command was found but could
85: * not be invoked
86: */
1.1 deraadt 87: execvp(*argv, argv);
88: err((errno == ENOENT) ? 127 : 126, "%s", *argv);
89: /* NOTREACHED */
90: }
91:
92: for (ep = environ; *ep; ep++)
93: (void)printf("%s\n", *ep);
94:
95: exit(0);
96: }
97:
1.5 deraadt 98: void
1.10 ! deraadt 99: usage(void)
1.1 deraadt 100: {
1.6 aaron 101: (void)fprintf(stderr, "usage: env [-i] [name=value ...] "
102: "[utility [argument ...]]\n");
1.1 deraadt 103: exit (1);
104: }