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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #if defined(LIBC_SCCS) && !defined(lint) 35 static char sccsid[] = "@(#)stat_flags.c 8.1 (Berkeley) 5/31/93"; 36 #endif /* LIBC_SCCS and not lint */ 37 #include <sys/cdefs.h> 38 __FBSDID("$FreeBSD$"); 39 40 #include <sys/types.h> 41 #include <sys/stat.h> 42 43 #include <stddef.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <unistd.h> 47 48 static struct { 49 char *name; 50 u_long flag; 51 int invert; 52 } mapping[] = { 53 /* shorter names per flag first, all prefixed by "no" */ 54 { "nosappnd", SF_APPEND, 0 }, 55 { "nosappend", SF_APPEND, 0 }, 56 { "noarch", SF_ARCHIVED, 0 }, 57 { "noarchived", SF_ARCHIVED, 0 }, 58 { "noschg", SF_IMMUTABLE, 0 }, 59 { "noschange", SF_IMMUTABLE, 0 }, 60 { "nosimmutable", SF_IMMUTABLE, 0 }, 61 { "nosunlnk", SF_NOUNLINK, 0 }, 62 { "nosunlink", SF_NOUNLINK, 0 }, 63 #ifdef SF_SNAPSHOT 64 { "nosnapshot", SF_SNAPSHOT, 0 }, 65 #endif 66 { "nouappnd", UF_APPEND, 0 }, 67 { "nouappend", UF_APPEND, 0 }, 68 { "nouchg", UF_IMMUTABLE, 0 }, 69 { "nouchange", UF_IMMUTABLE, 0 }, 70 { "nouimmutable", UF_IMMUTABLE, 0 }, 71 { "nodump", UF_NODUMP, 1 }, 72 { "noopaque", UF_OPAQUE, 0 }, 73 { "nouunlnk", UF_NOUNLINK, 0 }, 74 { "nouunlink", UF_NOUNLINK, 0 } 75 }; 76 #define longestflaglen 12 77 #define nmappings (sizeof(mapping) / sizeof(mapping[0])) 78 79 /* 80 * fflagstostr -- 81 * Convert file flags to a comma-separated string. If no flags 82 * are set, return the empty string. 83 */ 84 char * 85 fflagstostr(flags) 86 u_long flags; 87 { 88 char *string; 89 char *sp, *dp; 90 u_long setflags; 91 int i; 92 93 if ((string = (char *)malloc(nmappings * (longestflaglen + 1))) == NULL) 94 return (NULL); 95 96 setflags = flags; 97 dp = string; 98 for (i = 0; i < nmappings; i++) { 99 if (setflags & mapping[i].flag) { 100 if (dp > string) 101 *dp++ = ','; 102 for (sp = mapping[i].invert ? mapping[i].name : 103 mapping[i].name + 2; *sp; *dp++ = *sp++) ; 104 setflags &= ~mapping[i].flag; 105 } 106 } 107 *dp = '\0'; 108 return (string); 109 } 110 111 /* 112 * strtofflags -- 113 * Take string of arguments and return file flags. Return 0 on 114 * success, 1 on failure. On failure, stringp is set to point 115 * to the offending token. 116 */ 117 int 118 strtofflags(stringp, setp, clrp) 119 char **stringp; 120 u_long *setp, *clrp; 121 { 122 char *string, *p; 123 int i; 124 125 if (setp) 126 *setp = 0; 127 if (clrp) 128 *clrp = 0; 129 string = *stringp; 130 while ((p = strsep(&string, "\t ,")) != NULL) { 131 *stringp = p; 132 if (*p == '\0') 133 continue; 134 for (i = 0; i < nmappings; i++) { 135 if (strcmp(p, mapping[i].name + 2) == 0) { 136 if (mapping[i].invert) { 137 if (clrp) 138 *clrp |= mapping[i].flag; 139 } else { 140 if (setp) 141 *setp |= mapping[i].flag; 142 } 143 break; 144 } else if (strcmp(p, mapping[i].name) == 0) { 145 if (mapping[i].invert) { 146 if (setp) 147 *setp |= mapping[i].flag; 148 } else { 149 if (clrp) 150 *clrp |= mapping[i].flag; 151 } 152 break; 153 } 154 } 155 if (i == nmappings) 156 return 1; 157 } 158 return 0; 159 } 160