diskdev_cmds/disklib/vfslist.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*-
  24  * Copyright (c) 1995
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * Redistribution and use in source and binary forms, with or without
  28  * modification, are permitted provided that the following conditions
  29  * are met:
  30  * 1. Redistributions of source code must retain the above copyright
  31  *    notice, this list of conditions and the following disclaimer.
  32  * 2. Redistributions in binary form must reproduce the above copyright
  33  *    notice, this list of conditions and the following disclaimer in the
  34  *    documentation and/or other materials provided with the distribution.
  35  * 3. All advertising materials mentioning features or use of this software
  36  *    must display the following acknowledgement:
  37  *      This product includes software developed by the University of
  38  *      California, Berkeley and its contributors.
  39  * 4. Neither the name of the University nor the names of its contributors
  40  *    may be used to endorse or promote products derived from this software
  41  *    without specific prior written permission.
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  44  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  45  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  46  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  47  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  48  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  49  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  50  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  51  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  52  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  53  * SUCH DAMAGE.
  54  */
  55
  56
  57 #include <stdlib.h>
  58 #include <string.h>
  59 #include <unistd.h>
  60 #include <err.h>
  61
  62 int               checkvfsname __P((const char *, const char **));
  63 const char      **makevfslist __P((char *));
  64 static int        skipvfs;
  65
  66 int
  67 checkvfsname(vfsname, vfslist)
  68         const char *vfsname;
  69         const char **vfslist;
  70 {
  71
  72         if (vfslist == NULL)
  73                 return (0);
  74         while (*vfslist != NULL) {
  75                 if (strcmp(vfsname, *vfslist) == 0)
  76                         return (skipvfs);
  77                 ++vfslist;
  78         }
  79         return (!skipvfs);
  80 }
  81
  82 const char **
  83 makevfslist(fslist)
  84         char *fslist;
  85 {
  86         const char **av;
  87         int i;
  88         char *nextcp;
  89
  90         if (fslist == NULL)
  91                 return (NULL);
  92         if (fslist[0] == 'n' && fslist[1] == 'o') {
  93                 fslist += 2;
  94                 skipvfs = 1;
  95         }
  96         for (i = 0, nextcp = fslist; *nextcp; nextcp++)
  97                 if (*nextcp == ',')
  98                         i++;
  99         if ((av = malloc((size_t)(i + 2) * sizeof(char *))) == NULL) {
 100                 warn(NULL);
 101                 return (NULL);
 102         }
 103         nextcp = fslist;
 104         i = 0;
 105         av[i++] = nextcp;
 106         while ((nextcp = strchr(nextcp, ',')) != NULL) {
 107                 *nextcp++ = '\0';
 108                 av[i++] = nextcp;
 109         }
 110         av[i++] = NULL;
 111         return (av);
 112 }