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      1 /*	$NetBSD: vfslist.c,v 1.7 2008/08/05 20:57:45 pooka Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 #if 0
     35 static char sccsid[] = "@(#)vfslist.c	8.1 (Berkeley) 5/8/95";
     36 #else
     37 __RCSID("$NetBSD: vfslist.c,v 1.7 2008/08/05 20:57:45 pooka Exp $");
     38 #endif
     39 #endif /* not lint */
     40 
     41 #include <err.h>
     42 #include <stdlib.h>
     43 #include <string.h>
     44 #include <unistd.h>
     45 
     46 #include "mountprog.h"
     47 
     48 static int	  skipvfs;
     49 
     50 int
     51 checkvfsname(const char *vfsname, const char **vfslist)
     52 {
     53 
     54 	if (vfslist == NULL)
     55 		return (0);
     56 	while (*vfslist != NULL) {
     57 		if (strcmp(vfsname, *vfslist) == 0)
     58 			return (skipvfs);
     59 		++vfslist;
     60 	}
     61 	return (!skipvfs);
     62 }
     63 
     64 const char **
     65 makevfslist(const char *fslist)
     66 {
     67 	const char **av;
     68 	size_t i;
     69 	char *nextcp, *fsl;
     70 
     71 	if (fslist == NULL)
     72 		return NULL;
     73 
     74 	if (fslist[0] == 'n' && fslist[1] == 'o') {
     75 		fslist += 2;
     76 		skipvfs = 1;
     77 	}
     78 	if ((fsl = strdup(fslist)) == NULL) {
     79 		warn("strdup");
     80 		return NULL;
     81 	}
     82 	for (i = 0, nextcp = fsl; *nextcp; nextcp++)
     83 		if (*nextcp == ',')
     84 			i++;
     85 	if ((av = malloc((i + 2) * sizeof(char *))) == NULL) {
     86 		warn("malloc");
     87 		free(fsl);
     88 		return NULL;
     89 	}
     90 	nextcp = fsl;
     91 	i = 0;
     92 	av[i++] = nextcp;
     93 	while ((nextcp = strchr(nextcp, ',')) != NULL) {
     94 		*nextcp++ = '\0';
     95 		av[i++] = nextcp;
     96 	}
     97 	av[i++] = NULL;
     98 	return av;
     99 }
    100