2.11BSD#431 - /usr/src/sbin/mount/getmntopts.c

   1: /*-
   2:  * Copyright (c) 1994
   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: #if !defined(lint) && defined(DOSCCS)
  35: static char sccsid[] = "@(#)getmntopts.c	8.1.1 (2.11BSD) 1996/1/16";
  36: #endif /* not lint */
  37: 
  38: #include <sys/param.h>
  39: #include <sys/mount.h>
  40: 
  41: #include <errno.h>
  42: #include <fstab.h>
  43: #include <stdlib.h>
  44: #include <string.h>
  45: 
  46: #include "mntopts.h"
  47: 
  48: void
  49: getmntopts(options, m0, flagp)
  50:     char *options;
  51:     struct mntopt *m0;
  52:     int *flagp;
  53: {
  54:     register struct mntopt *m;
  55:     int negative;
  56:     register char *opt;
  57:     char *optbuf;
  58: 
  59:     /* Copy option string, since it is about to be torn asunder... */
  60:     if ((optbuf = strdup(options)) == NULL)
  61:         err(1, NULL);
  62: 
  63:     for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) {
  64:         /* Check for "no" prefix. */
  65:         if (opt[0] == 'n' && opt[1] == 'o') {
  66:             negative = 1;
  67:             opt += 2;
  68:         } else
  69:             negative = 0;
  70: 
  71:         /* Scan option table. */
  72:         for (m = m0; m->m_option != NULL; ++m)
  73:             if (strcasecmp(opt, m->m_option) == 0)
  74:                 break;
  75: 
  76:         /* Save flag, or fail if option is not recognised. */
  77:         if (m->m_option) {
  78:             if (negative == m->m_inverse)
  79:                 *flagp |= m->m_flag;
  80:             else
  81:                 *flagp &= ~m->m_flag;
  82:         } else
  83:             errx(1, "-o %s: option not supported", opt);
  84:     }
  85: 
  86:     free(optbuf);
  87: }

Defined functions

Defined variables