Annotation of src/usr.bin/biff/biff.c, Revision 1.6
1.6 ! millert 1: /* $OpenBSD: biff.c,v 1.5 1998/12/07 20:10:09 deraadt Exp $ */
1.1 deraadt 2: /* $NetBSD: biff.c,v 1.3 1995/03/26 02:34:22 glass Exp $ */
3:
4: /*
5: * Copyright (c) 1980, 1993
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) 1980, 1993\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[] = "@(#)biff.c 8.1 (Berkeley) 6/6/93";
46: #else
1.6 ! millert 47: static char rcsid[] = "$OpenBSD: biff.c,v 1.5 1998/12/07 20:10:09 deraadt Exp $";
1.1 deraadt 48: #endif
49: #endif /* not lint */
50:
51: #include <sys/types.h>
52: #include <sys/stat.h>
53:
54: #include <err.h>
55: #include <errno.h>
56: #include <stdio.h>
57: #include <stdlib.h>
58: #include <string.h>
59: #include <unistd.h>
60:
61: static void usage __P((void));
62:
1.5 deraadt 63: int
1.1 deraadt 64: main(argc, argv)
65: int argc;
66: char *argv[];
67: {
68: struct stat sb;
69: int ch;
70: char *name;
71:
72:
1.3 millert 73: while ((ch = getopt(argc, argv, "")) != -1)
1.1 deraadt 74: switch(ch) {
75: case '?':
76: default:
77: usage();
78: }
79: argc -= optind;
80: argv += optind;
81:
82: if ((name = ttyname(STDERR_FILENO)) == NULL)
83: err(2, "tty");
84:
85: if (stat(name, &sb))
86: err(2, "stat");
87:
88: if (*argv == NULL) {
1.4 deraadt 89: (void)printf("is %s\n", sb.st_mode & S_IXUSR ? "y" : "n");
90: exit(sb.st_mode & S_IXUSR ? 0 : 1);
1.1 deraadt 91: }
92:
93: switch(argv[0][0]) {
94: case 'n':
1.4 deraadt 95: if (chmod(name, sb.st_mode & ~S_IXUSR) < 0)
1.6 ! millert 96: err(2, "%s", name);
1.1 deraadt 97: break;
98: case 'y':
1.4 deraadt 99: if (chmod(name, sb.st_mode | S_IXUSR) < 0)
1.6 ! millert 100: err(2, "%s", name);
1.1 deraadt 101: break;
102: default:
103: usage();
104: }
1.4 deraadt 105: exit(sb.st_mode & S_IXUSR ? 0 : 1);
1.1 deraadt 106: }
107:
108: static void
109: usage()
110: {
111: (void)fprintf(stderr, "usage: biff [y | n]\n");
112: exit(2);
113: }