File: | src/usr.bin/biff/biff.c |
Warning: | line 58, column 2 Value stored to 'argc' is never read |
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1 | /* $OpenBSD: biff.c,v 1.18 2021/07/12 15:09:19 beck Exp $ */ |
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. Neither the name of the University nor the names of its contributors |
17 | * may be used to endorse or promote products derived from this software |
18 | * without specific prior written permission. |
19 | * |
20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
30 | * SUCH DAMAGE. |
31 | */ |
32 | |
33 | #include <sys/types.h> |
34 | #include <sys/stat.h> |
35 | |
36 | #include <err.h> |
37 | #include <errno(*__errno()).h> |
38 | #include <stdio.h> |
39 | #include <stdlib.h> |
40 | #include <string.h> |
41 | #include <unistd.h> |
42 | |
43 | static void usage(void); |
44 | |
45 | int |
46 | main(int argc, char *argv[]) |
47 | { |
48 | struct stat sb; |
49 | int ch; |
50 | char *name; |
51 | |
52 | while ((ch = getopt(argc, argv, "")) != -1) |
53 | switch(ch) { |
54 | case '?': |
55 | default: |
56 | usage(); |
57 | } |
58 | argc -= optind; |
Value stored to 'argc' is never read | |
59 | argv += optind; |
60 | |
61 | if ((name = ttyname(STDERR_FILENO2)) == NULL((void *)0)) |
62 | err(2, "tty"); |
63 | |
64 | if (unveil(name, "rw") == -1) |
65 | err(2, "unveil %s", name); |
66 | if (pledge("stdio rpath fattr", NULL((void *)0)) == -1) |
67 | err(2, "pledge"); |
68 | |
69 | if (stat(name, &sb)) |
70 | err(2, "stat"); |
71 | |
72 | sb.st_mode &= ACCESSPERMS(0000700|0000070|0000007); |
73 | |
74 | if (*argv == NULL((void *)0)) { |
75 | (void)printf("is %s\n", sb.st_mode & S_IXUSR0000100 ? "y" : "n"); |
76 | exit(sb.st_mode & S_IXUSR0000100 ? 0 : 1); |
77 | } |
78 | |
79 | switch(argv[0][0]) { |
80 | case 'n': |
81 | if (chmod(name, sb.st_mode & ~S_IXUSR0000100) == -1) |
82 | err(2, "%s", name); |
83 | break; |
84 | case 'y': |
85 | if (chmod(name, sb.st_mode | S_IXUSR0000100) == -1) |
86 | err(2, "%s", name); |
87 | break; |
88 | default: |
89 | usage(); |
90 | } |
91 | exit(sb.st_mode & S_IXUSR0000100 ? 0 : 1); |
92 | } |
93 | |
94 | static void |
95 | usage(void) |
96 | { |
97 | (void)fprintf(stderr(&__sF[2]), "usage: biff [n | y]\n"); |
98 | exit(2); |
99 | } |