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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #if 0 31 #ifndef lint 32 static char sccsid[] = "@(#)getmntopts.c 8.3 (Berkeley) 3/29/95"; 33 #endif /* not lint */ 34 #endif 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #include <sys/param.h> 39 #include <sys/stat.h> 40 41 #include <err.h> 42 #include <errno.h> 43 #include <stdlib.h> 44 #include <string.h> 45 #include <sysexits.h> 46 47 #include "mntopts.h" 48 49 int getmnt_silent = 0; 50 51 void 52 getmntopts(options, m0, flagp, altflagp) 53 const char *options; 54 const struct mntopt *m0; 55 int *flagp; 56 int *altflagp; 57 { 58 const struct mntopt *m; 59 int negative, len; 60 char *opt, *optbuf, *p; 61 int *thisflagp; 62 63 /* Copy option string, since it is about to be torn asunder... */ 64 if ((optbuf = strdup(options)) == NULL) 65 err(1, NULL); 66 67 for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) { 68 /* Check for "no" prefix. */ 69 if (opt[0] == 'n' && opt[1] == 'o') { 70 negative = 1; 71 opt += 2; 72 } else 73 negative = 0; 74 75 /* 76 * for options with assignments in them (ie. quotas) 77 * ignore the assignment as it's handled elsewhere 78 */ 79 p = strchr(opt, '='); 80 if (p != NULL) 81 *++p = '\0'; 82 83 /* Scan option table. */ 84 for (m = m0; m->m_option != NULL; ++m) { 85 len = strlen(m->m_option); 86 if (strncasecmp(opt, m->m_option, len) == 0) 87 if ( m->m_option[len] == '\0' 88 || m->m_option[len] == '=' 89 ) 90 break; 91 } 92 93 /* Save flag, or fail if option is not recognized. */ 94 if (m->m_option) { 95 thisflagp = m->m_altloc ? altflagp : flagp; 96 if (negative == m->m_inverse) 97 *thisflagp |= m->m_flag; 98 else 99 *thisflagp &= ~m->m_flag; 100 } else if (!getmnt_silent) { 101 errx(1, "-o %s: option not supported", opt); 102 } 103 } 104 105 free(optbuf); 106 } 107 108 void 109 rmslashes(rrpin, rrpout) 110 char *rrpin; 111 char *rrpout; 112 { 113 char *rrpoutstart; 114 115 *rrpout = *rrpin; 116 for (rrpoutstart = rrpout; *rrpin != '\0'; *rrpout++ = *rrpin++) { 117 118 /* skip all double slashes */ 119 while (*rrpin == '/' && *(rrpin + 1) == '/') 120 rrpin++; 121 } 122 123 /* remove trailing slash if necessary */ 124 if (rrpout - rrpoutstart > 1 && *(rrpout - 1) == '/') 125 *(rrpout - 1) = '\0'; 126 else 127 *rrpout = '\0'; 128 } 129 130 void 131 checkpath(path, resolved) 132 const char *path; 133 char *resolved; 134 { 135 struct stat sb; 136 137 if (realpath(path, resolved) != NULL && stat(resolved, &sb) == 0) { 138 if (!S_ISDIR(sb.st_mode)) 139 errx(EX_USAGE, "%s: not a directory", resolved); 140 } else 141 errx(EX_USAGE, "%s: %s", resolved, strerror(errno)); 142 } 143