Annotation of src/usr.bin/logname/logname.c, Revision 1.2
1.2 ! deraadt 1: /* $OpenBSD: logname.c,v 1.6 1994/12/22 06:39:32 jtc Exp $ */
1.1 deraadt 2: /* $NetBSD: logname.c,v 1.6 1994/12/22 06:39:32 jtc Exp $ */
3:
4: /*-
5: * Copyright (c) 1991, 1993, 1994
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: static char copyright[] =
39: "@(#) Copyright (c) 1991, 1993, 1994\n\
40: The Regents of the University of California. All rights reserved.\n";
41: #endif /* not lint */
42:
43: #ifndef lint
44: #if 0
45: static char sccsid[] = "@(#)logname.c 8.2 (Berkeley) 4/3/94";
46: #endif
1.2 ! deraadt 47: static char rcsid[] = "$OpenBSD: logname.c,v 1.6 1994/12/22 06:39:32 jtc Exp $";
1.1 deraadt 48: #endif /* not lint */
49:
50: #include <stdio.h>
51: #include <stdlib.h>
52: #include <locale.h>
53: #include <unistd.h>
54: #include <err.h>
55:
56: void usage __P((void));
57:
58: int
59: main(argc, argv)
60: int argc;
61: char *argv[];
62: {
63: int ch;
64: char *p;
65:
66: setlocale(LC_ALL, "");
67:
68: while ((ch = getopt(argc, argv, "")) != EOF)
69: switch (ch) {
70: case '?':
71: default:
72: usage();
73: /* NOTREACHED */
74: }
75:
76: if (argc != optind) {
77: usage();
78: /* NOTREACHED */
79: }
80:
81: if ((p = getlogin()) == NULL)
82: err(1, NULL);
83: (void)printf("%s\n", p);
84: exit(0);
85: }
86:
87: void
88: usage()
89: {
90: (void)fprintf(stderr, "usage: logname\n");
91: exit(1);
92: }