vfslist.c revision 37425 
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#if 0
36static char sccsid[] = "@(#)vfslist.c	8.1 (Berkeley) 5/8/95";
37#endif
38static const char rcsid[] =
39	"$Id$";
40#endif /* not lint */
41
42#include <err.h>
43#include <stdlib.h>
44#include <string.h>
45
46#include "extern.h"
47
48static int	  skipvfs;
49
50int
51checkvfsname(vfsname, vfslist)
52	const char *vfsname;
53	const char **vfslist;
54{
55
56	if (vfslist == NULL)
57		return (0);
58	while (*vfslist != NULL) {
59		if (strcmp(vfsname, *vfslist) == 0)
60			return (skipvfs);
61		++vfslist;
62	}
63	return (!skipvfs);
64}
65
66const char **
67makevfslist(fslist)
68	char *fslist;
69{
70	const char **av;
71	int i;
72	char *nextcp;
73
74	if (fslist == NULL)
75		return (NULL);
76	if (fslist[0] == 'n' && fslist[1] == 'o') {
77		fslist += 2;
78		skipvfs = 1;
79	}
80	for (i = 0, nextcp = fslist; *nextcp; nextcp++)
81		if (*nextcp == ',')
82			i++;
83	if ((av = malloc((size_t)(i + 2) * sizeof(char *))) == NULL) {
84		warnx("malloc failed");
85		return (NULL);
86	}
87	nextcp = fslist;
88	i = 0;
89	av[i++] = nextcp;
90	while ((nextcp = strchr(nextcp, ',')) != NULL) {
91		*nextcp++ = '\0';
92		av[i++] = nextcp;
93	}
94	av[i++] = NULL;
95	return (av);
96}
97