mount.c

/*
 * Copyright (c) 2009 Jakub Jermar
 * 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.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 <stdio.h>
#include <stdlib.h>
#include <vfs/vfs.h>
#include <errno.h>
#include <getopt.h>
#include "config.h"
#include "util.h"
#include "errors.h"
#include "entry.h"
#include "mount.h"
#include "cmds.h"

static const char *cmdname = "mount";

static struct option const long_options[] = {
        { "help", no_argument, 0, 'h' },
        { 0, 0, 0, 0 }
};


/* Displays help for mount in various levels */
void help_cmd_mount(unsigned int level)
{
        static char helpfmt[] =
            "Usage:  %s <fstype> <mp> <dev> [<moptions>]\n";
        if (level == HELP_SHORT) {
                printf("'%s' mounts a file system.\n", cmdname);
        } else {
                help_cmd_mount(HELP_SHORT);
                printf(helpfmt, cmdname);
        }
        return;
}

/* Main entry point for mount, accepts an array of arguments */
int cmd_mount(char **argv)
{
        unsigned int argc;
        const char *mopts = "";
        int rc, c, opt_ind;

        argc = cli_count_args(argv);

        for (c = 0, optind = 0, opt_ind = 0; c != -1;) {
                c = getopt_long(argc, argv, "h", long_options, &opt_ind);
                switch (c) {
                case 'h':
                        help_cmd_mount(HELP_LONG);
                        return CMD_SUCCESS;
                }
        }

        if ((argc < 4) || (argc > 5)) {
                printf("%s: invalid number of arguments. Try `mount --help'\n",
                    cmdname);
                return CMD_FAILURE;
        }
        if (argc == 5)
                mopts = argv[4];

        rc = mount(argv[1], argv[2], argv[3], mopts, 0);
        if (rc != EOK) {
                printf("Unable to mount %s filesystem to %s on %s (rc=%d)\n",
                    argv[1], argv[2], argv[3], rc);
                return CMD_FAILURE;
        }

        return CMD_SUCCESS;
}

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