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