1 /*- 2 * Copyright (c) 1993 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. 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 * @(#)stat_flags.c 8.1 (Berkeley) 5/31/93 30 * $FreeBSD: src/lib/libc/gen/strtofflags.c,v 1.18.2.1 2000/06/28 01:52:24 joe Exp $ 31 * $DragonFly: src/lib/libc/gen/strtofflags.c,v 1.5 2008/06/02 20:17:07 dillon Exp $ 32 */ 33 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 static struct { 43 const char *name; 44 u_long flag; 45 int invert; 46 } mapping[] = { 47 /* shorter names per flag first, all prefixed by "no" */ 48 { "nosappnd", SF_APPEND, 0 }, 49 { "nosappend", SF_APPEND, 0 }, 50 { "noarch", SF_ARCHIVED, 0 }, 51 { "noarchived", SF_ARCHIVED, 0 }, 52 { "noschg", SF_IMMUTABLE, 0 }, 53 { "noschange", SF_IMMUTABLE, 0 }, 54 #ifdef SF_NOHISTORY 55 { "noshistory", SF_NOHISTORY, 1 }, 56 #endif 57 { "nosimmutable", SF_IMMUTABLE, 0 }, 58 { "nosunlnk", SF_NOUNLINK, 1 }, 59 { "nosunlink", SF_NOUNLINK, 1 }, 60 { "nouappnd", UF_APPEND, 0 }, 61 { "nouappend", UF_APPEND, 0 }, 62 { "nouchg", UF_IMMUTABLE, 0 }, 63 { "nouchange", UF_IMMUTABLE, 0 }, 64 { "nouimmutable", UF_IMMUTABLE, 0 }, 65 { "nodump", UF_NODUMP, 1 }, 66 { "noopaque", UF_OPAQUE, 0 }, 67 #ifdef UF_NOHISTORY 68 { "nouhistory", UF_NOHISTORY, 1 }, 69 { "nohistory", UF_NOHISTORY, 1 }, 70 #endif 71 { "nouunlnk", UF_NOUNLINK, 1 }, 72 { "nouunlink", UF_NOUNLINK, 1 }, 73 #ifdef UF_CACHE 74 { "nocache", UF_CACHE, 0 }, 75 { "noucache", UF_CACHE, 0 }, 76 { "noscache", SF_NOCACHE, 1 }, 77 #endif 78 #ifdef UF_XLINK 79 { "noxlink", UF_XLINK, 0 }, 80 { "nouxlink", UF_XLINK, 0 }, 81 { "nosxlink", SF_XLINK, 0 }, 82 #endif 83 }; 84 #define longestflaglen 12 85 #define nmappings (sizeof(mapping) / sizeof(mapping[0])) 86 87 /* 88 * fflagstostr -- 89 * Convert file flags to a comma-separated string. If no flags 90 * are set, return the empty string. 91 */ 92 char * 93 fflagstostr(u_long flags) 94 { 95 char *string; 96 const char *sp; 97 char *dp; 98 u_long setflags; 99 u_int i; 100 101 if ((string = (char *)malloc(nmappings * (longestflaglen + 1))) == NULL) 102 return (NULL); 103 104 setflags = flags; 105 dp = string; 106 for (i = 0; i < nmappings; i++) { 107 if (setflags & mapping[i].flag) { 108 if (dp > string) 109 *dp++ = ','; 110 for (sp = mapping[i].invert ? mapping[i].name : 111 mapping[i].name + 2; *sp; *dp++ = *sp++) ; 112 setflags &= ~mapping[i].flag; 113 } 114 } 115 *dp = '\0'; 116 return (string); 117 } 118 119 /* 120 * strtofflags -- 121 * Take string of arguments and return file flags. Return 0 on 122 * success, 1 on failure. On failure, stringp is set to point 123 * to the offending token. 124 */ 125 int 126 strtofflags(char **stringp, u_long *setp, u_long *clrp) 127 { 128 char *string, *p; 129 u_int i; 130 131 if (setp) 132 *setp = 0; 133 if (clrp) 134 *clrp = 0; 135 string = *stringp; 136 while ((p = strsep(&string, "\t ,")) != NULL) { 137 *stringp = p; 138 if (*p == '\0') 139 continue; 140 for (i = 0; i < nmappings; i++) { 141 if (strcmp(p, mapping[i].name + 2) == 0) { 142 if (mapping[i].invert) { 143 if (clrp) 144 *clrp |= mapping[i].flag; 145 } else { 146 if (setp) 147 *setp |= mapping[i].flag; 148 } 149 break; 150 } else if (strcmp(p, mapping[i].name) == 0) { 151 if (mapping[i].invert) { 152 if (setp) 153 *setp |= mapping[i].flag; 154 } else { 155 if (clrp) 156 *clrp |= mapping[i].flag; 157 } 158 break; 159 } 160 } 161 if (i == nmappings) 162 return 1; 163 } 164 return 0; 165 } 166