vfslist.c revision 28671 
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#else
38static const char rcsid[] =
39	"$Id$";
40#endif
41#endif /* not lint */
42
43#include <err.h>
44#include <stdlib.h>
45#include <string.h>
46#include <unistd.h>
47
48#include "extern.h"
49
50static int	  skipvfs;
51
52int
53checkvfsname(vfsname, vfslist)
54	const char *vfsname;
55	const char **vfslist;
56{
57
58	if (vfslist == NULL)
59		return (0);
60	while (*vfslist != NULL) {
61		if (strcmp(vfsname, *vfslist) == 0)
62			return (skipvfs);
63		++vfslist;
64	}
65	return (!skipvfs);
66}
67
68const char **
69makevfslist(fslist)
70	char *fslist;
71{
72	const char **av;
73	int i;
74	char *nextcp;
75
76	if (fslist == NULL)
77		return (NULL);
78	if (fslist[0] == 'n' && fslist[1] == 'o') {
79		fslist += 2;
80		skipvfs = 1;
81	}
82	for (i = 0, nextcp = fslist; *nextcp; nextcp++)
83		if (*nextcp == ',')
84			i++;
85	if ((av = malloc((size_t)(i + 2) * sizeof(char *))) == NULL) {
86		warn(NULL);
87		return (NULL);
88	}
89	nextcp = fslist;
90	i = 0;
91	av[i++] = nextcp;
92	while ((nextcp = strchr(nextcp, ',')) != NULL) {
93		*nextcp++ = '\0';
94		av[i++] = nextcp;
95	}
96	av[i++] = NULL;
97	return (av);
98}
99