Subversion Repositories HelenOS

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Ignore whitespace Rev 3345 → Rev 3346

/trunk/uspace/app/bdsh/cmds/modules/touch/touch.c
0,0 → 1,108
/* Copyright (c) 2008, Tim Post <tinkertim@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 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.
*
* Neither the name of the original program's authors nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
*/
 
/* TODO: Options that people would expect, such as not creating the file if
* it doesn't exist, specifying the access time, etc */
 
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <dirent.h>
#include <sys/types.h>
 
#include "config.h"
#include "errors.h"
#include "util.h"
#include "entry.h"
#include "touch.h"
#include "cmds.h"
 
static char *cmdname = "touch";
 
/* Dispays help for touch in various levels */
void * help_cmd_touch(unsigned int level)
{
if (level == HELP_SHORT) {
printf("`%s' updates access times for files\n", cmdname);
} else {
help_cmd_touch(HELP_SHORT);
printf(" `%s' <file>, if the file does not exist it will be "
"created\n", cmdname);
}
 
return CMD_VOID;
}
 
/* Main entry point for touch, accepts an array of arguments */
int * cmd_touch(char **argv)
{
unsigned int argc, i = 0, ret = 0;
int fd;
char *buff = NULL;
 
DIR *dirp;
 
/* Count the arguments */
for (argc = 0; argv[argc] != NULL; argc ++);
 
if (argc == 1) {
printf("%s - incorrect number of arguments. Try `help %s extended'\n",
cmdname, cmdname);
return CMD_FAILURE;
}
 
for (i = 1; i < argc; i ++) {
buff = cli_strdup(argv[i]);
dirp = opendir(buff);
if (dirp) {
cli_error(CL_ENOTSUP, "%s is a directory", buff);
closedir(dirp);
ret ++;
continue;
}
 
fd = open(buff, O_RDWR | O_CREAT);
if (fd < 0) {
cli_error(CL_EFAIL, "Could not update / create %s ", buff);
ret ++;
continue;
} else
close(fd);
 
free(buff);
}
 
if (ret)
return CMD_FAILURE;
else
return CMD_SUCCESS;
}