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 #include <sys/cdefs.h> 33 __SCCSID("@(#)stat_flags.c 8.1 (Berkeley) 5/31/93"); 34 __FBSDID("$FreeBSD$"); 35 36 #include <sys/types.h> 37 #include <sys/stat.h> 38 39 #include <stddef.h> 40 #include <stdlib.h> 41 #include <string.h> 42 #include <unistd.h> 43 44 #define longestflaglen 12 45 static struct { 46 char name[longestflaglen + 1]; 47 char invert; 48 u_long flag; 49 } const mapping[] = { 50 /* shorter names per flag first, all prefixed by "no" */ 51 { "nosappnd", 0, SF_APPEND }, 52 { "nosappend", 0, SF_APPEND }, 53 { "noarch", 0, SF_ARCHIVED }, 54 { "noarchived", 0, SF_ARCHIVED }, 55 { "noschg", 0, SF_IMMUTABLE }, 56 { "noschange", 0, SF_IMMUTABLE }, 57 { "nosimmutable", 0, SF_IMMUTABLE }, 58 { "nosunlnk", 0, SF_NOUNLINK }, 59 { "nosunlink", 0, SF_NOUNLINK }, 60 #ifdef SF_SNAPSHOT 61 { "nosnapshot", 0, SF_SNAPSHOT }, 62 #endif 63 { "nouappnd", 0, UF_APPEND }, 64 { "nouappend", 0, UF_APPEND }, 65 { "nouarch", 0, UF_ARCHIVE }, 66 { "nouarchive", 0, UF_ARCHIVE }, 67 { "nohidden", 0, UF_HIDDEN }, 68 { "nouhidden", 0, UF_HIDDEN }, 69 { "nouchg", 0, UF_IMMUTABLE }, 70 { "nouchange", 0, UF_IMMUTABLE }, 71 { "nouimmutable", 0, UF_IMMUTABLE }, 72 { "nodump", 1, UF_NODUMP }, 73 { "nouunlnk", 0, UF_NOUNLINK }, 74 { "nouunlink", 0, UF_NOUNLINK }, 75 { "nooffline", 0, UF_OFFLINE }, 76 { "nouoffline", 0, UF_OFFLINE }, 77 { "noopaque", 0, UF_OPAQUE }, 78 { "nordonly", 0, UF_READONLY }, 79 { "nourdonly", 0, UF_READONLY }, 80 { "noreadonly", 0, UF_READONLY }, 81 { "noureadonly", 0, UF_READONLY }, 82 { "noreparse", 0, UF_REPARSE }, 83 { "noureparse", 0, UF_REPARSE }, 84 { "nosparse", 0, UF_SPARSE }, 85 { "nousparse", 0, UF_SPARSE }, 86 { "nosystem", 0, UF_SYSTEM }, 87 { "nousystem", 0, UF_SYSTEM } 88 }; 89 #define nmappings (sizeof(mapping) / sizeof(mapping[0])) 90 91 /* 92 * fflagstostr -- 93 * Convert file flags to a comma-separated string. If no flags 94 * are set, return the empty string. 95 */ 96 char * 97 fflagstostr(u_long flags) 98 { 99 char *string; 100 const char *sp; 101 char *dp; 102 u_long setflags; 103 u_int i; 104 105 if ((string = (char *)malloc(nmappings * (longestflaglen + 1))) == NULL) 106 return (NULL); 107 108 setflags = flags; 109 dp = string; 110 for (i = 0; i < nmappings; i++) { 111 if (setflags & mapping[i].flag) { 112 if (dp > string) 113 *dp++ = ','; 114 for (sp = mapping[i].invert ? mapping[i].name : 115 mapping[i].name + 2; *sp; *dp++ = *sp++) ; 116 setflags &= ~mapping[i].flag; 117 } 118 } 119 *dp = '\0'; 120 return (string); 121 } 122 123 /* 124 * strtofflags -- 125 * Take string of arguments and return file flags. Return 0 on 126 * success, 1 on failure. On failure, stringp is set to point 127 * to the offending token. 128 */ 129 int 130 strtofflags(char **stringp, u_long *setp, u_long *clrp) 131 { 132 char *string, *p; 133 int i; 134 135 if (setp) 136 *setp = 0; 137 if (clrp) 138 *clrp = 0; 139 string = *stringp; 140 while ((p = strsep(&string, "\t ,")) != NULL) { 141 *stringp = p; 142 if (*p == '\0') 143 continue; 144 for (i = 0; i < nmappings; i++) { 145 if (strcmp(p, mapping[i].name + 2) == 0) { 146 if (mapping[i].invert) { 147 if (clrp) 148 *clrp |= mapping[i].flag; 149 } else { 150 if (setp) 151 *setp |= mapping[i].flag; 152 } 153 break; 154 } else if (strcmp(p, mapping[i].name) == 0) { 155 if (mapping[i].invert) { 156 if (setp) 157 *setp |= mapping[i].flag; 158 } else { 159 if (clrp) 160 *clrp |= mapping[i].flag; 161 } 162 break; 163 } 164 } 165 if (i == nmappings) 166 return 1; 167 } 168 return 0; 169 } 170