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 static struct { 45 char *name; 46 u_long flag; 47 int invert; 48 } mapping[] = { 49 /* shorter names per flag first, all prefixed by "no" */ 50 { "nosappnd", SF_APPEND, 0 }, 51 { "nosappend", SF_APPEND, 0 }, 52 { "noarch", SF_ARCHIVED, 0 }, 53 { "noarchived", SF_ARCHIVED, 0 }, 54 { "noschg", SF_IMMUTABLE, 0 }, 55 { "noschange", SF_IMMUTABLE, 0 }, 56 { "nosimmutable", SF_IMMUTABLE, 0 }, 57 { "nosunlnk", SF_NOUNLINK, 0 }, 58 { "nosunlink", SF_NOUNLINK, 0 }, 59 #ifdef SF_SNAPSHOT 60 { "nosnapshot", SF_SNAPSHOT, 0 }, 61 #endif 62 { "nouappnd", UF_APPEND, 0 }, 63 { "nouappend", UF_APPEND, 0 }, 64 { "nouchg", UF_IMMUTABLE, 0 }, 65 { "nouchange", UF_IMMUTABLE, 0 }, 66 { "nouimmutable", UF_IMMUTABLE, 0 }, 67 { "nodump", UF_NODUMP, 1 }, 68 { "noopaque", UF_OPAQUE, 0 }, 69 { "nouunlnk", UF_NOUNLINK, 0 }, 70 { "nouunlink", UF_NOUNLINK, 0 } 71 }; 72 #define longestflaglen 12 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 char *sp, *dp; 86 u_long setflags; 87 int i; 88 89 if ((string = (char *)malloc(nmappings * (longestflaglen + 1))) == NULL) 90 return (NULL); 91 92 setflags = flags; 93 dp = string; 94 for (i = 0; i < nmappings; i++) { 95 if (setflags & mapping[i].flag) { 96 if (dp > string) 97 *dp++ = ','; 98 for (sp = mapping[i].invert ? mapping[i].name : 99 mapping[i].name + 2; *sp; *dp++ = *sp++) ; 100 setflags &= ~mapping[i].flag; 101 } 102 } 103 *dp = '\0'; 104 return (string); 105 } 106 107 /* 108 * strtofflags -- 109 * Take string of arguments and return file flags. Return 0 on 110 * success, 1 on failure. On failure, stringp is set to point 111 * to the offending token. 112 */ 113 int 114 strtofflags(stringp, setp, clrp) 115 char **stringp; 116 u_long *setp, *clrp; 117 { 118 char *string, *p; 119 int i; 120 121 if (setp) 122 *setp = 0; 123 if (clrp) 124 *clrp = 0; 125 string = *stringp; 126 while ((p = strsep(&string, "\t ,")) != NULL) { 127 *stringp = p; 128 if (*p == '\0') 129 continue; 130 for (i = 0; i < nmappings; i++) { 131 if (strcmp(p, mapping[i].name + 2) == 0) { 132 if (mapping[i].invert) { 133 if (clrp) 134 *clrp |= mapping[i].flag; 135 } else { 136 if (setp) 137 *setp |= mapping[i].flag; 138 } 139 break; 140 } else if (strcmp(p, mapping[i].name) == 0) { 141 if (mapping[i].invert) { 142 if (setp) 143 *setp |= mapping[i].flag; 144 } else { 145 if (clrp) 146 *clrp |= mapping[i].flag; 147 } 148 break; 149 } 150 } 151 if (i == nmappings) 152 return 1; 153 } 154 return 0; 155 } 156