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 35 #if 0 36 static char sccsid[] = "@(#)getmntopts.c 8.3 (Berkeley) 3/29/95"; 37 #else 38 static const char rcsid[] = 39 "$FreeBSD$"; 40 #endif 41 #endif /* not lint */ 42 43 #include <sys/param.h> 44 #include <sys/stat.h> 45 46 #include <err.h> 47 #include <errno.h> 48 #include <stdlib.h> 49 #include <string.h> 50 #include <sysexits.h> 51 52 #include "mntopts.h" 53 54 int getmnt_silent = 0; 55 56 void 57 getmntopts(options, m0, flagp, altflagp) 58 const char *options; 59 const struct mntopt *m0; 60 int *flagp; 61 int *altflagp; 62 { 63 const struct mntopt *m; 64 int negative, len; 65 char *opt, *optbuf, *p; 66 int *thisflagp; 67 68 /* Copy option string, since it is about to be torn asunder... */ 69 if ((optbuf = strdup(options)) == NULL) 70 err(1, NULL); 71 72 for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) { 73 /* Check for "no" prefix. */ 74 if (opt[0] == 'n' && opt[1] == 'o') { 75 negative = 1; 76 opt += 2; 77 } else 78 negative = 0; 79 80 /* 81 * for options with assignments in them (ie. quotas) 82 * ignore the assignment as it's handled elsewhere 83 */ 84 p = strchr(opt, '='); 85 if (p) 86 *++p = '\0'; 87 88 /* Scan option table. */ 89 for (m = m0; m->m_option != NULL; ++m) { 90 len = strlen(m->m_option); 91 if (strncasecmp(opt, m->m_option, len) == 0) 92 if ( m->m_option[len] == '\0' 93 || m->m_option[len] == '=' 94 ) 95 break; 96 } 97 98 /* Save flag, or fail if option is not recognized. */ 99 if (m->m_option) { 100 thisflagp = m->m_altloc ? altflagp : flagp; 101 if (negative == m->m_inverse) 102 *thisflagp |= m->m_flag; 103 else 104 *thisflagp &= ~m->m_flag; 105 } else if (!getmnt_silent) { 106 errx(1, "-o %s: option not supported", opt); 107 } 108 } 109 110 free(optbuf); 111 } 112 113 void 114 rmslashes(rrpin, rrpout) 115 char *rrpin; 116 char *rrpout; 117 { 118 char *rrpoutstart; 119 120 *rrpout = *rrpin; 121 for (rrpoutstart = rrpout; *rrpin != '\0'; *rrpout++ = *rrpin++) { 122 123 /* skip all double slashes */ 124 while (*rrpin == '/' && *(rrpin + 1) == '/') 125 rrpin++; 126 } 127 128 /* remove trailing slash if necessary */ 129 if (rrpout - rrpoutstart > 1 && *(rrpout - 1) == '/') 130 *(rrpout - 1) = '\0'; 131 else 132 *rrpout = '\0'; 133 } 134 135 void 136 checkpath(path, resolved) 137 const char *path; 138 char *resolved; 139 { 140 struct stat sb; 141 142 if (realpath(path, resolved) != NULL && stat(resolved, &sb) == 0) { 143 if (!S_ISDIR(sb.st_mode)) 144 errx(EX_USAGE, "%s: not a directory", resolved); 145 } else 146 errx(EX_USAGE, "%s: %s", resolved, strerror(errno)); 147 } 148