Annotation of prex-old/usr/bin/touch/touch.c, Revision 1.1.1.1
1.1 nbrk 1: /*
2: * Copyright (c) 2005-2007, Kohsuke Ohtani
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
8: * 1. Redistributions of source code must retain the above copyright
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: * 3. Neither the name of the author nor the names of any co-contributors
14: * may be used to endorse or promote products derived from this software
15: * without specific prior written permission.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27: * SUCH DAMAGE.
28: */
29:
30: #include <sys/mount.h>
31: #include <sys/stat.h>
32: #include <sys/fcntl.h>
33:
34: #include <unistd.h>
35: #include <err.h>
36: #include <errno.h>
37: #include <string.h>
38: #include <stdlib.h>
39: #include <limits.h>
40: #include <stdio.h>
41:
42: #ifdef CMDBOX
43: #define main(argc, argv) touch_main(argc, argv)
44: #endif
45:
46: /* Flags */
47: #define TF_NOCREAT 0x01 /* Do not create file */
48:
49: static void usage(void);
50: static int do_touch(char *, unsigned int);
51:
52: int
53: main(int argc, char *argv[])
54: {
55: unsigned int flags;
56: int ch;
57:
58: flags = 0;
59: while ((ch = getopt(argc, argv, "")) != -1)
60: switch(ch) {
61: case 'c':
62: flags |= TF_NOCREAT;
63: break;
64: case '?':
65: default:
66: usage();
67: }
68: argc -= optind;
69: argv += optind;
70:
71: if (argc == 0)
72: usage();
73:
74: do {
75: if (do_touch(*argv, flags))
76: err(1, NULL);
77: ++argv;
78: } while (*argv);
79: exit(1);
80: }
81:
82: static void
83: usage(void)
84: {
85: fprintf(stderr, "usage: touch [-c] file...\n");
86: exit(1);
87: }
88:
89: static int
90: do_touch(char *file, unsigned int flags)
91: {
92: struct stat st;
93: int fd;
94:
95: if (stat(file, &st) < 0) {
96: if (!(flags & TF_NOCREAT)) {
97: if ((fd = creat(file, 0666)) < 0)
98: return -1;
99: close(fd);
100: }
101: return 0;
102: }
103: if ((fd = open(file, 2)) < 0)
104: return -1;
105: /* utime(file, NULL) */
106: close(fd);
107: return 0;
108: }
CVSweb