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vfslist.c revision 1.1 
      1 /*
      2  * Copyright (c) 1995
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #ifndef lint
     35 static char sccsid[] = "@(#)vfslist.c	8.1 (Berkeley) 5/8/95";
     36 #endif /* not lint */
     37 
     38 #include <stdlib.h>
     39 #include <string.h>
     40 #include <unistd.h>
     41 
     42 int		  checkvfsname __P((const char *, const char **));
     43 const char	**makevfslist __P((char *));
     44 static int	  skipvfs;
     45 
     46 int
     47 checkvfsname(vfsname, vfslist)
     48 	const char *vfsname;
     49 	const char **vfslist;
     50 {
     51 
     52 	if (vfslist == NULL)
     53 		return (0);
     54 	while (*vfslist != NULL) {
     55 		if (strcmp(vfsname, *vfslist) == 0)
     56 			return (skipvfs);
     57 		++vfslist;
     58 	}
     59 	return (!skipvfs);
     60 }
     61 
     62 const char **
     63 makevfslist(fslist)
     64 	char *fslist;
     65 {
     66 	const char **av;
     67 	int i;
     68 	char *nextcp;
     69 
     70 	if (fslist == NULL)
     71 		return (NULL);
     72 	if (fslist[0] == 'n' && fslist[1] == 'o') {
     73 		fslist += 2;
     74 		skipvfs = 1;
     75 	}
     76 	for (i = 0, nextcp = fslist; *nextcp; nextcp++)
     77 		if (*nextcp == ',')
     78 			i++;
     79 	if ((av = malloc((size_t)(i + 2) * sizeof(char *))) == NULL) {
     80 		warn(NULL);
     81 		return (NULL);
     82 	}
     83 	nextcp = fslist;
     84 	i = 0;
     85 	av[i++] = nextcp;
     86 	while ((nextcp = strchr(nextcp, ',')) != NULL) {
     87 		*nextcp++ = '\0';
     88 		av[i++] = nextcp;
     89 	}
     90 	av[i++] = NULL;
     91 	return (av);
     92 }
     93