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vfslist.c

/*-
 * 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.
 * 4. 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.
 */

#ifndef lint
#if 0
static char sccsid[] = "@(#)vfslist.c     8.1 (Berkeley) 5/8/95";
#endif
#endif /* not lint */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/sbin/mount/vfslist.c,v 1.6 2004/04/09 19:58:31 markm Exp $");

#include <err.h>
#include <stdlib.h>
#include <string.h>

#include "extern.h"

static int    skipvfs;

int
checkvfsname(vfsname, vfslist)
      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(fslist)
      char *fslist;
{
      const char **av;
      int i;
      char *nextcp;

      if (fslist == NULL)
            return (NULL);
      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);
}

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