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 #ifndef lint 35 #if 0 36 static char sccsid[] = "@(#)stat_flags.c 8.1 (Berkeley) 5/31/93"; 37 #else 38 static const char rcsid[] = 39 "$Id: stat_flags.c,v 1.7 1997/08/07 15:33:49 steve Exp $"; 40 #endif 41 #endif /* not lint */ 42 43 #include <sys/types.h> 44 #include <sys/stat.h> 45 46 #include <stddef.h> 47 #include <string.h> 48 49 #define SAPPEND(s) { \ 50 if (prefix != NULL) \ 51 (void)strcat(string, prefix); \ 52 (void)strcat(string, s); \ 53 prefix = ","; \ 54 } 55 56 /* 57 * flags_to_string -- 58 * Convert stat flags to a comma-separated string. If no flags 59 * are set, return the default string. 60 */ 61 char * 62 flags_to_string(flags, def) 63 u_long flags; 64 char *def; 65 { 66 static char string[128]; 67 char *prefix; 68 69 string[0] = '\0'; 70 prefix = NULL; 71 if (flags & UF_APPEND) 72 SAPPEND("uappnd"); 73 if (flags & UF_IMMUTABLE) 74 SAPPEND("uchg"); 75 if (flags & UF_NOUNLINK) 76 SAPPEND("uunlnk"); 77 if (flags & UF_NODUMP) 78 SAPPEND("nodump"); 79 if (flags & UF_OPAQUE) 80 SAPPEND("opaque"); 81 if (flags & SF_APPEND) 82 SAPPEND("sappnd"); 83 if (flags & SF_ARCHIVED) 84 SAPPEND("arch"); 85 if (flags & SF_IMMUTABLE) 86 SAPPEND("schg"); 87 if (flags & SF_NOUNLINK) 88 SAPPEND("sunlnk"); 89 return (prefix == NULL && def != NULL ? def : string); 90 } 91 92 #define TEST(a, b, f) { \ 93 if (!memcmp(a, b, sizeof(b))) { \ 94 if (clear) { \ 95 if (clrp) \ 96 *clrp |= (f); \ 97 } else if (setp) \ 98 *setp |= (f); \ 99 break; \ 100 } \ 101 } 102 103 /* 104 * string_to_flags -- 105 * Take string of arguments and return stat flags. Return 0 on 106 * success, 1 on failure. On failure, stringp is set to point 107 * to the offending token. 108 */ 109 int 110 string_to_flags(stringp, setp, clrp) 111 char **stringp; 112 u_long *setp, *clrp; 113 { 114 int clear; 115 char *string, *p; 116 117 clear = 0; 118 if (setp) 119 *setp = 0; 120 if (clrp) 121 *clrp = 0; 122 string = *stringp; 123 while ((p = strsep(&string, "\t ,")) != NULL) { 124 *stringp = p; 125 if (*p == '\0') 126 continue; 127 if (p[0] == 'n' && p[1] == 'o') { 128 clear = 1; 129 p += 2; 130 } 131 switch (p[0]) { 132 case 'a': 133 TEST(p, "arch", SF_ARCHIVED); 134 TEST(p, "archived", SF_ARCHIVED); 135 return (1); 136 case 'd': 137 clear = !clear; 138 TEST(p, "dump", UF_NODUMP); 139 return (1); 140 case 'o': 141 TEST(p, "opaque", UF_OPAQUE); 142 return (1); 143 case 's': 144 TEST(p, "sappnd", SF_APPEND); 145 TEST(p, "sappend", SF_APPEND); 146 TEST(p, "schg", SF_IMMUTABLE); 147 TEST(p, "schange", SF_IMMUTABLE); 148 TEST(p, "simmutable", SF_IMMUTABLE); 149 TEST(p, "sunlnk", SF_NOUNLINK); 150 TEST(p, "sunlink", SF_NOUNLINK); 151 return (1); 152 case 'u': 153 TEST(p, "uappnd", UF_APPEND); 154 TEST(p, "uappend", UF_APPEND); 155 TEST(p, "uchg", UF_IMMUTABLE); 156 TEST(p, "uchange", UF_IMMUTABLE); 157 TEST(p, "uimmutable", UF_IMMUTABLE); 158 TEST(p, "uunlnk", UF_NOUNLINK); 159 TEST(p, "uunlink", UF_NOUNLINK); 160 /* FALLTHROUGH */ 161 default: 162 return (1); 163 } 164 } 165 return (0); 166 } 167