getmntopts.c revision 1559
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#ifndef lint 35static char sccsid[] = "@(#)getmntopts.c 8.1 (Berkeley) 3/27/94"; 36#endif /* not lint */ 37 38#include <sys/param.h> 39#include <sys/mount.h> 40 41#include <err.h> 42#include <errno.h> 43#include <fstab.h> 44#include <stdlib.h> 45#include <string.h> 46 47#include "mntopts.h" 48 49void 50getmntopts(options, m0, flagp) 51 const char *options; 52 const struct mntopt *m0; 53 int *flagp; 54{ 55 const struct mntopt *m; 56 int negative; 57 char *opt, *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} 88