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3295 post 1
/* Copyright (c) 2008, Tim Post <tinkertim@gmail.com>
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions are met:
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 *
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 * Redistributions of source code must retain the above copyright notice, this
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 * list of conditions and the following disclaimer.
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 *
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 * Redistributions in binary form must reproduce the above copyright notice,
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 * this list of conditions and the following disclaimer in the documentation
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 * and/or other materials provided with the distribution.
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 *
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 * Neither the name of the original program's authors nor the names of its
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 * contributors may be used to endorse or promote products derived from this
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 * software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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 * POSSIBILITY OF SUCH DAMAGE.
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 */
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/* TODO: Options that people would expect, such as not creating the file if
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 * it doesn't exist, specifying the access time, etc */
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <dirent.h>
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#include <sys/types.h>
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#include "config.h"
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#include "errors.h"
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#include "util.h"
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#include "entry.h"
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#include "touch.h"
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#include "cmds.h"
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static char *cmdname = "touch";
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/* Dispays help for touch in various levels */
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void help_cmd_touch(unsigned int level)
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{
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    if (level == HELP_SHORT) {
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        printf("`%s' updates access times for files\n", cmdname);
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    } else {
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        help_cmd_touch(HELP_SHORT);
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        printf("  `%s' <file>, if the file does not exist it will be "
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                "created\n", cmdname);
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    }
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    return;
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}
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/* Main entry point for touch, accepts an array of arguments */
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int cmd_touch(char **argv)
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{
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    unsigned int argc, i = 0, ret = 0;
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    int fd;
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    char *buff = NULL;
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    DIR *dirp;
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    argc = cli_count_args(argv);
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    if (argc == 1) {
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        printf("%s - incorrect number of arguments. Try `help %s extended'\n",
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            cmdname, cmdname);
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        return CMD_FAILURE;
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    }
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    for (i = 1; i < argc; i ++) {
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        buff = cli_strdup(argv[i]);
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        dirp = opendir(buff);
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        if (dirp) {
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            cli_error(CL_ENOTSUP, "%s is a directory", buff);
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            closedir(dirp);
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            ret ++;
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            continue;
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        }
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        fd = open(buff, O_RDWR | O_CREAT);
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        if (fd < 0) {
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            cli_error(CL_EFAIL, "Could not update / create %s ", buff);
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            ret ++;
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            continue;
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        } else
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            close(fd);
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        free(buff);
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    }
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    if (ret)
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        return CMD_FAILURE;
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    else
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        return CMD_SUCCESS;
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}
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