/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 1995
 *      The Regents of the University of California.  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 University 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 REGENTS 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 REGENTS 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 <err.h>
#include <stdlib.h>
#include <string.h>

#include "extern.h"

static int        skipvfs;

int
checkvfsname(const char *vfsname, const char **vfslist)
{

        if (vfslist == NULL)
                return (0);
        while (*vfslist != NULL) {
                if (strcmp(vfsname, *vfslist) == 0)
                        return (skipvfs);
                ++vfslist;
        }
        return (!skipvfs);
}

const char **
makevfslist(char *fslist)
{
        const char **av;
        int i;
        char *nextcp;

        if (fslist == NULL)
                return (NULL);
        skipvfs = 0;
        if (fslist[0] == 'n' && fslist[1] == 'o') {
                fslist += 2;
                skipvfs = 1;
        }
        for (i = 0, nextcp = fslist; *nextcp; nextcp++)
                if (*nextcp == ',')
                        i++;
        if ((av = malloc((size_t)(i + 2) * sizeof(char *))) == NULL) {
                warnx("malloc failed");
                return (NULL);
        }
        nextcp = fslist;
        i = 0;
        av[i++] = nextcp;
        while ((nextcp = strchr(nextcp, ',')) != NULL) {
                *nextcp++ = '\0';
                av[i++] = nextcp;
        }
        av[i++] = NULL;
        return (av);
}