1 /* @(#)stat_flags.c 8.2 (Berkeley) 7/28/94 */
2 /* $NetBSD: stat_flags.c,v 1.2 2007/01/16 17:34:02 cbiere Exp $ */
3
4 /*-
5 * Copyright (c) 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 #ifdef __DragonFly__
34 #define HAVE_STRUCT_STAT_ST_FLAGS 1
35 #endif
36
37 #include <sys/types.h>
38 #include <sys/stat.h>
39 #include <fts.h>
40 #include <stddef.h>
41 #include <stdio.h>
42 #include <string.h>
43 #include <stdlib.h>
44
45 #include "extern.h"
46
47 #define SAPPEND(s) do { \
48 if (prefix != NULL) \
49 (void)strlcat(string, prefix, sizeof(string)); \
50 (void)strlcat(string, s, sizeof(string)); \
51 prefix = ","; \
52 } while (/* CONSTCOND */ 0)
53
54 /*
55 * flags_to_string --
56 * Convert stat flags to a comma-separated string. If no flags
57 * are set, return the default string.
58 */
59 char *
flags_to_string(u_long flags,const char * def)60 flags_to_string(u_long flags, const char *def)
61 {
62 char string[128];
63 const char *prefix;
64
65 string[0] = '\0';
66 prefix = NULL;
67 #if HAVE_STRUCT_STAT_ST_FLAGS
68 if (flags & UF_APPEND)
69 SAPPEND("uappnd");
70 if (flags & UF_IMMUTABLE)
71 SAPPEND("uchg");
72 if (flags & UF_NODUMP)
73 SAPPEND("nodump");
74 if (flags & UF_OPAQUE)
75 SAPPEND("opaque");
76 if (flags & SF_APPEND)
77 SAPPEND("sappnd");
78 if (flags & SF_ARCHIVED)
79 SAPPEND("arch");
80 if (flags & SF_IMMUTABLE)
81 SAPPEND("schg");
82 #ifdef SF_SNAPSHOT
83 if (flags & SF_SNAPSHOT)
84 SAPPEND("snap");
85 #endif
86 #endif
87 if (prefix != NULL)
88 return strdup(string);
89 return strdup(def);
90 }
91
92 #define TEST(a, b, f) { \
93 if (!strcmp(a, b)) { \
94 if (clear) { \
95 if (clrp) \
96 *clrp |= (f); \
97 if (setp) \
98 *setp &= ~(f); \
99 } else { \
100 if (setp) \
101 *setp |= (f); \
102 if (clrp) \
103 *clrp &= ~(f); \
104 } \
105 break; \
106 } \
107 }
108
109 /*
110 * string_to_flags --
111 * Take string of arguments and return stat flags. Return 0 on
112 * success, 1 on failure. On failure, stringp is set to point
113 * to the offending token.
114 */
115 int
string_to_flags(char ** stringp,u_long * setp,u_long * clrp)116 string_to_flags(char **stringp, u_long *setp, u_long *clrp)
117 {
118 #if HAVE_STRUCT_STAT_ST_FLAGS
119 int clear;
120 char *string, *p;
121 #endif
122
123 if (setp)
124 *setp = 0;
125 if (clrp)
126 *clrp = 0;
127
128 #if HAVE_STRUCT_STAT_ST_FLAGS
129 string = *stringp;
130 while ((p = strsep(&string, "\t ,")) != NULL) {
131 clear = 0;
132 *stringp = p;
133 if (*p == '\0')
134 continue;
135 if (p[0] == 'n' && p[1] == 'o') {
136 clear = 1;
137 p += 2;
138 }
139 switch (p[0]) {
140 case 'a':
141 TEST(p, "arch", SF_ARCHIVED);
142 TEST(p, "archived", SF_ARCHIVED);
143 return (1);
144 case 'd':
145 clear = !clear;
146 TEST(p, "dump", UF_NODUMP);
147 return (1);
148 case 'n':
149 /*
150 * Support `nonodump'. Note that
151 * the state of clear is not changed.
152 */
153 TEST(p, "nodump", UF_NODUMP);
154 return (1);
155 case 'o':
156 TEST(p, "opaque", UF_OPAQUE);
157 return (1);
158 case 's':
159 TEST(p, "sappnd", SF_APPEND);
160 TEST(p, "sappend", SF_APPEND);
161 TEST(p, "schg", SF_IMMUTABLE);
162 TEST(p, "schange", SF_IMMUTABLE);
163 TEST(p, "simmutable", SF_IMMUTABLE);
164 return (1);
165 case 'u':
166 TEST(p, "uappnd", UF_APPEND);
167 TEST(p, "uappend", UF_APPEND);
168 TEST(p, "uchg", UF_IMMUTABLE);
169 TEST(p, "uchange", UF_IMMUTABLE);
170 TEST(p, "uimmutable", UF_IMMUTABLE);
171 return (1);
172 default:
173 return (1);
174 }
175 }
176 #endif
177
178 return (0);
179 }
180