File: [local] / prex-old / usr / bin / touch / touch.c (download)
Revision 1.1.1.1 (vendor branch), Tue Jun 3 09:38:47 2008 UTC (16 years, 2 months ago) by nbrk
Branch: MAIN, KOHSUKE
CVS Tags: PREX_0_8_BASE, PREX_0_7_BASE, HEAD Changes since 1.1: +0 -0 lines
Yeah, this is an initial import of Prex, portable real-time microkernel
operating system. I wanna hack it for non-profit but fun, so let it in.
|
/*
* Copyright (c) 2005-2007, Kohsuke Ohtani
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/fcntl.h>
#include <unistd.h>
#include <err.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <limits.h>
#include <stdio.h>
#ifdef CMDBOX
#define main(argc, argv) touch_main(argc, argv)
#endif
/* Flags */
#define TF_NOCREAT 0x01 /* Do not create file */
static void usage(void);
static int do_touch(char *, unsigned int);
int
main(int argc, char *argv[])
{
unsigned int flags;
int ch;
flags = 0;
while ((ch = getopt(argc, argv, "")) != -1)
switch(ch) {
case 'c':
flags |= TF_NOCREAT;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (argc == 0)
usage();
do {
if (do_touch(*argv, flags))
err(1, NULL);
++argv;
} while (*argv);
exit(1);
}
static void
usage(void)
{
fprintf(stderr, "usage: touch [-c] file...\n");
exit(1);
}
static int
do_touch(char *file, unsigned int flags)
{
struct stat st;
int fd;
if (stat(file, &st) < 0) {
if (!(flags & TF_NOCREAT)) {
if ((fd = creat(file, 0666)) < 0)
return -1;
close(fd);
}
return 0;
}
if ((fd = open(file, 2)) < 0)
return -1;
/* utime(file, NULL) */
close(fd);
return 0;
}