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vfslist.c revision 1.2 
      1 /*	$NetBSD: vfslist.c,v 1.2 1997/09/16 12:22:47 lukem 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. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 #if 0
     39 static char sccsid[] = "@(#)vfslist.c	8.1 (Berkeley) 5/8/95";
     40 #else
     41 __RCSID("$NetBSD: vfslist.c,v 1.2 1997/09/16 12:22:47 lukem Exp $");
     42 #endif
     43 #endif /* not lint */
     44 
     45 #include <err.h>
     46 #include <stdlib.h>
     47 #include <string.h>
     48 #include <unistd.h>
     49 
     50 int		  checkvfsname __P((const char *, const char **));
     51 const char	**makevfslist __P((char *));
     52 static int	  skipvfs;
     53 
     54 int
     55 checkvfsname(vfsname, vfslist)
     56 	const char *vfsname;
     57 	const char **vfslist;
     58 {
     59 
     60 	if (vfslist == NULL)
     61 		return (0);
     62 	while (*vfslist != NULL) {
     63 		if (strcmp(vfsname, *vfslist) == 0)
     64 			return (skipvfs);
     65 		++vfslist;
     66 	}
     67 	return (!skipvfs);
     68 }
     69 
     70 const char **
     71 makevfslist(fslist)
     72 	char *fslist;
     73 {
     74 	const char **av;
     75 	int i;
     76 	char *nextcp;
     77 
     78 	if (fslist == NULL)
     79 		return (NULL);
     80 	if (fslist[0] == 'n' && fslist[1] == 'o') {
     81 		fslist += 2;
     82 		skipvfs = 1;
     83 	}
     84 	for (i = 0, nextcp = fslist; *nextcp; nextcp++)
     85 		if (*nextcp == ',')
     86 			i++;
     87 	if ((av = malloc((size_t)(i + 2) * sizeof(char *))) == NULL) {
     88 		warn("malloc");
     89 		return (NULL);
     90 	}
     91 	nextcp = fslist;
     92 	i = 0;
     93 	av[i++] = nextcp;
     94 	while ((nextcp = strchr(nextcp, ',')) != NULL) {
     95 		*nextcp++ = '\0';
     96 		av[i++] = nextcp;
     97 	}
     98 	av[i++] = NULL;
     99 	return (av);
    100 }
    101