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 { "nouarch", 0, UF_ARCHIVE },
66 { "nouarchive", 0, UF_ARCHIVE },
67 { "nohidden", 0, UF_HIDDEN },
68 { "nouhidden", 0, UF_HIDDEN },
69 { "nouchg", 0, UF_IMMUTABLE },
70 { "nouchange", 0, UF_IMMUTABLE },
71 { "nouimmutable", 0, UF_IMMUTABLE },
72 { "nodump", 1, UF_NODUMP },
73 { "nouunlnk", 0, UF_NOUNLINK },
74 { "nouunlink", 0, UF_NOUNLINK },
75 { "nooffline", 0, UF_OFFLINE },
76 { "nouoffline", 0, UF_OFFLINE },
77 { "noopaque", 0, UF_OPAQUE },
78 { "nordonly", 0, UF_READONLY },
79 { "nourdonly", 0, UF_READONLY },
80 { "noreadonly", 0, UF_READONLY },
81 { "noureadonly", 0, UF_READONLY },
82 { "noreparse", 0, UF_REPARSE },
83 { "noureparse", 0, UF_REPARSE },
84 { "nosparse", 0, UF_SPARSE },
85 { "nousparse", 0, UF_SPARSE },
86 { "nosystem", 0, UF_SYSTEM },
87 { "nousystem", 0, UF_SYSTEM }
88 };
89 #define nmappings (sizeof(mapping) / sizeof(mapping[0]))
90
91 /*
92 * fflagstostr --
93 * Convert file flags to a comma-separated string. If no flags
94 * are set, return the empty string.
95 */
96 char *
fflagstostr(u_long flags)97 fflagstostr(u_long flags)
98 {
99 char *string;
100 const char *sp;
101 char *dp;
102 u_long setflags;
103 u_int i;
104
105 if ((string = (char *)malloc(nmappings * (longestflaglen + 1))) == NULL)
106 return (NULL);
107
108 setflags = flags;
109 dp = string;
110 for (i = 0; i < nmappings; i++) {
111 if (setflags & mapping[i].flag) {
112 if (dp > string)
113 *dp++ = ',';
114 for (sp = mapping[i].invert ? mapping[i].name :
115 mapping[i].name + 2; *sp; *dp++ = *sp++) ;
116 setflags &= ~mapping[i].flag;
117 }
118 }
119 *dp = '\0';
120 return (string);
121 }
122
123 /*
124 * strtofflags --
125 * Take string of arguments and return file flags. Return 0 on
126 * success, 1 on failure. On failure, stringp is set to point
127 * to the offending token.
128 */
129 int
strtofflags(char ** stringp,u_long * setp,u_long * clrp)130 strtofflags(char **stringp, u_long *setp, u_long *clrp)
131 {
132 char *string, *p;
133 int i;
134
135 if (setp)
136 *setp = 0;
137 if (clrp)
138 *clrp = 0;
139 string = *stringp;
140 while ((p = strsep(&string, "\t ,")) != NULL) {
141 *stringp = p;
142 if (*p == '\0')
143 continue;
144 for (i = 0; i < nmappings; i++) {
145 if (strcmp(p, mapping[i].name + 2) == 0) {
146 if (mapping[i].invert) {
147 if (clrp)
148 *clrp |= mapping[i].flag;
149 } else {
150 if (setp)
151 *setp |= mapping[i].flag;
152 }
153 break;
154 } else if (strcmp(p, mapping[i].name) == 0) {
155 if (mapping[i].invert) {
156 if (setp)
157 *setp |= mapping[i].flag;
158 } else {
159 if (clrp)
160 *clrp |= mapping[i].flag;
161 }
162 break;
163 }
164 }
165 if (i == nmappings)
166 return 1;
167 }
168 return 0;
169 }
170