1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #if defined(LIBC_SCCS) && !defined(lint) 33 static char sccsid[] = "@(#)stat_flags.c 8.1 (Berkeley) 5/31/93"; 34 #endif /* LIBC_SCCS and not lint */ 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #include <sys/types.h> 39 #include <sys/stat.h> 40 41 #include <stddef.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <unistd.h> 45 46 #define longestflaglen 12 47 static struct { 48 char name[longestflaglen + 1]; 49 char invert; 50 u_long flag; 51 } const mapping[] = { 52 /* shorter names per flag first, all prefixed by "no" */ 53 { "nosappnd", 0, SF_APPEND }, 54 { "nosappend", 0, SF_APPEND }, 55 { "noarch", 0, SF_ARCHIVED }, 56 { "noarchived", 0, SF_ARCHIVED }, 57 { "noschg", 0, SF_IMMUTABLE }, 58 { "noschange", 0, SF_IMMUTABLE }, 59 { "nosimmutable", 0, SF_IMMUTABLE }, 60 { "nosunlnk", 0, SF_NOUNLINK }, 61 { "nosunlink", 0, SF_NOUNLINK }, 62 #ifdef SF_SNAPSHOT 63 { "nosnapshot", 0, SF_SNAPSHOT }, 64 #endif 65 { "nouappnd", 0, UF_APPEND }, 66 { "nouappend", 0, UF_APPEND }, 67 { "nouarch", 0, UF_ARCHIVE }, 68 { "nouarchive", 0, UF_ARCHIVE }, 69 { "nohidden", 0, UF_HIDDEN }, 70 { "nouhidden", 0, UF_HIDDEN }, 71 { "nouchg", 0, UF_IMMUTABLE }, 72 { "nouchange", 0, UF_IMMUTABLE }, 73 { "nouimmutable", 0, UF_IMMUTABLE }, 74 { "nodump", 1, UF_NODUMP }, 75 { "nouunlnk", 0, UF_NOUNLINK }, 76 { "nouunlink", 0, UF_NOUNLINK }, 77 { "nooffline", 0, UF_OFFLINE }, 78 { "nouoffline", 0, UF_OFFLINE }, 79 { "noopaque", 0, UF_OPAQUE }, 80 { "nordonly", 0, UF_READONLY }, 81 { "nourdonly", 0, UF_READONLY }, 82 { "noreadonly", 0, UF_READONLY }, 83 { "noureadonly", 0, UF_READONLY }, 84 { "noreparse", 0, UF_REPARSE }, 85 { "noureparse", 0, UF_REPARSE }, 86 { "nosparse", 0, UF_SPARSE }, 87 { "nousparse", 0, UF_SPARSE }, 88 { "nosystem", 0, UF_SYSTEM }, 89 { "nousystem", 0, UF_SYSTEM } 90 }; 91 #define nmappings (sizeof(mapping) / sizeof(mapping[0])) 92 93 /* 94 * fflagstostr -- 95 * Convert file flags to a comma-separated string. If no flags 96 * are set, return the empty string. 97 */ 98 char * 99 fflagstostr(u_long flags) 100 { 101 char *string; 102 const char *sp; 103 char *dp; 104 u_long setflags; 105 u_int i; 106 107 if ((string = (char *)malloc(nmappings * (longestflaglen + 1))) == NULL) 108 return (NULL); 109 110 setflags = flags; 111 dp = string; 112 for (i = 0; i < nmappings; i++) { 113 if (setflags & mapping[i].flag) { 114 if (dp > string) 115 *dp++ = ','; 116 for (sp = mapping[i].invert ? mapping[i].name : 117 mapping[i].name + 2; *sp; *dp++ = *sp++) ; 118 setflags &= ~mapping[i].flag; 119 } 120 } 121 *dp = '\0'; 122 return (string); 123 } 124 125 /* 126 * strtofflags -- 127 * Take string of arguments and return file flags. Return 0 on 128 * success, 1 on failure. On failure, stringp is set to point 129 * to the offending token. 130 */ 131 int 132 strtofflags(char **stringp, u_long *setp, u_long *clrp) 133 { 134 char *string, *p; 135 int i; 136 137 if (setp) 138 *setp = 0; 139 if (clrp) 140 *clrp = 0; 141 string = *stringp; 142 while ((p = strsep(&string, "\t ,")) != NULL) { 143 *stringp = p; 144 if (*p == '\0') 145 continue; 146 for (i = 0; i < nmappings; i++) { 147 if (strcmp(p, mapping[i].name + 2) == 0) { 148 if (mapping[i].invert) { 149 if (clrp) 150 *clrp |= mapping[i].flag; 151 } else { 152 if (setp) 153 *setp |= mapping[i].flag; 154 } 155 break; 156 } else if (strcmp(p, mapping[i].name) == 0) { 157 if (mapping[i].invert) { 158 if (setp) 159 *setp |= mapping[i].flag; 160 } else { 161 if (clrp) 162 *clrp |= mapping[i].flag; 163 } 164 break; 165 } 166 } 167 if (i == nmappings) 168 return 1; 169 } 170 return 0; 171 } 172