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 * 4. 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 30 #if defined(LIBC_SCCS) && !defined(lint) 31 static char sccsid[] = "@(#)stat_flags.c 8.1 (Berkeley) 5/31/93"; 32 #endif /* LIBC_SCCS and not lint */ 33 #include <sys/cdefs.h> 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 { "nouchg", 0, UF_IMMUTABLE }, 66 { "nouchange", 0, UF_IMMUTABLE }, 67 { "nouimmutable", 0, UF_IMMUTABLE }, 68 { "nodump", 1, UF_NODUMP }, 69 { "noopaque", 0, UF_OPAQUE }, 70 { "nouunlnk", 0, UF_NOUNLINK }, 71 { "nouunlink", 0, UF_NOUNLINK } 72 }; 73 #define nmappings (sizeof(mapping) / sizeof(mapping[0])) 74 75 /* 76 * fflagstostr -- 77 * Convert file flags to a comma-separated string. If no flags 78 * are set, return the empty string. 79 */ 80 char * 81 fflagstostr(flags) 82 u_long flags; 83 { 84 char *string; 85 const char *sp; 86 char *dp; 87 u_long setflags; 88 int i; 89 90 if ((string = (char *)malloc(nmappings * (longestflaglen + 1))) == NULL) 91 return (NULL); 92 93 setflags = flags; 94 dp = string; 95 for (i = 0; i < nmappings; i++) { 96 if (setflags & mapping[i].flag) { 97 if (dp > string) 98 *dp++ = ','; 99 for (sp = mapping[i].invert ? mapping[i].name : 100 mapping[i].name + 2; *sp; *dp++ = *sp++) ; 101 setflags &= ~mapping[i].flag; 102 } 103 } 104 *dp = '\0'; 105 return (string); 106 } 107 108 /* 109 * strtofflags -- 110 * Take string of arguments and return file flags. Return 0 on 111 * success, 1 on failure. On failure, stringp is set to point 112 * to the offending token. 113 */ 114 int 115 strtofflags(stringp, setp, clrp) 116 char **stringp; 117 u_long *setp, *clrp; 118 { 119 char *string, *p; 120 int i; 121 122 if (setp) 123 *setp = 0; 124 if (clrp) 125 *clrp = 0; 126 string = *stringp; 127 while ((p = strsep(&string, "\t ,")) != NULL) { 128 *stringp = p; 129 if (*p == '\0') 130 continue; 131 for (i = 0; i < nmappings; i++) { 132 if (strcmp(p, mapping[i].name + 2) == 0) { 133 if (mapping[i].invert) { 134 if (clrp) 135 *clrp |= mapping[i].flag; 136 } else { 137 if (setp) 138 *setp |= mapping[i].flag; 139 } 140 break; 141 } else if (strcmp(p, mapping[i].name) == 0) { 142 if (mapping[i].invert) { 143 if (setp) 144 *setp |= mapping[i].flag; 145 } else { 146 if (clrp) 147 *clrp |= mapping[i].flag; 148 } 149 break; 150 } 151 } 152 if (i == nmappings) 153 return 1; 154 } 155 return 0; 156 } 157