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 * @(#)getmntopts.c 8.3 (Berkeley) 3/29/95 34 * $Id: getmntopts.c,v 1.1 2000/03/29 01:26:41 bp Exp $ 35 */ 36 37 #include <sys/param.h> 38 39 #include <err.h> 40 #include <stdlib.h> 41 #include <string.h> 42 43 #include "mntopts.h" 44 45 int getmnt_silent = 0; 46 47 void 48 getmntopts(const char *options, const struct mntopt *m0, int *flagp, 49 int *altflagp) 50 { 51 const struct mntopt *m; 52 int negative, len; 53 char *opt, *optbuf, *p; 54 int *thisflagp; 55 56 /* Copy option string, since it is about to be torn asunder... */ 57 if ((optbuf = strdup(options)) == NULL) 58 err(1, NULL); 59 60 for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) { 61 /* Check for "no" prefix. */ 62 if (opt[0] == 'n' && opt[1] == 'o') { 63 negative = 1; 64 opt += 2; 65 } else 66 negative = 0; 67 68 /* 69 * for options with assignments in them (ie. quotas) 70 * ignore the assignment as it's handled elsewhere 71 */ 72 p = strchr(opt, '='); 73 if (p) 74 *++p = '\0'; 75 76 /* Scan option table. */ 77 for (m = m0; m->m_option != NULL; ++m) { 78 len = strlen(m->m_option); 79 if (strncasecmp(opt, m->m_option, len) == 0) 80 if ( m->m_option[len] == '\0' 81 || m->m_option[len] == '=' 82 ) 83 break; 84 } 85 86 /* Save flag, or fail if option is not recognized. */ 87 if (m->m_option) { 88 thisflagp = m->m_altloc ? altflagp : flagp; 89 if (negative == m->m_inverse) 90 *thisflagp |= m->m_flag; 91 else 92 *thisflagp &= ~m->m_flag; 93 } else if (!getmnt_silent) { 94 errx(1, "-o %s: option not supported", opt); 95 } 96 } 97 98 free(optbuf); 99 } 100