1/* $NetBSD: stat_flags.c,v 1.3 2022/04/19 20:32:17 rillig Exp $ */
2
3/*-
4 * Copyright (c) 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#if HAVE_NBTOOL_CONFIG_H
33#include "nbtool_config.h"
34#else
35#define HAVE_STRUCT_STAT_ST_FLAGS 1
36#endif
37
38#include <sys/cdefs.h>
39#if !defined(lint)
40#if 0
41static char sccsid[] = "@(#)stat_flags.c 8.2 (Berkeley) 7/28/94";
42#else
43__RCSID("$NetBSD: stat_flags.c,v 1.3 2022/04/19 20:32:17 rillig Exp $");
44#endif
45#endif /* not lint */
46
47#include <sys/types.h>
48#include <sys/stat.h>
49#include <fts.h>
50#include <stddef.h>
51#include <string.h>
52#include <stdlib.h>
53
54#include "util.h"
55
56#define SAPPEND(s) do { \
57 if (prefix != NULL) \
58 (void)strlcat(string, prefix, sizeof(string)); \
59 (void)strlcat(string, s, sizeof(string)); \
60 prefix = ","; \
61} while (0)
62
63/*
64 * flags_to_string --
65 * Convert stat flags to a comma-separated string. If no flags
66 * are set, return the default string.
67 */
68char *
69flags_to_string(u_long flags, const char *def)
70{
71 char string[128];
72 const char *prefix;
73
74 string[0] = '\0';
75 prefix = NULL;
76#if HAVE_STRUCT_STAT_ST_FLAGS
77 if (flags & UF_APPEND)
78 SAPPEND("uappnd");
79 if (flags & UF_IMMUTABLE)
80 SAPPEND("uchg");
81 if (flags & UF_NODUMP)
82 SAPPEND("nodump");
83 if (flags & UF_OPAQUE)
84 SAPPEND("opaque");
85 if (flags & SF_APPEND)
86 SAPPEND("sappnd");
87 if (flags & SF_ARCHIVED)
88 SAPPEND("arch");
89 if (flags & SF_IMMUTABLE)
90 SAPPEND("schg");
91#ifdef SF_SNAPSHOT
92 if (flags & SF_SNAPSHOT)
93 SAPPEND("snap");
94#endif
95#endif
96 if (prefix != NULL)
97 return strdup(string);
98 return strdup(def);
99}
100
101#define TEST(a, b, f) { \
102 if (!strcmp(a, b)) { \
103 if (clear) { \
104 if (clrp) \
105 *clrp |= (f); \
106 if (setp) \
107 *setp &= ~(f); \
108 } else { \
109 if (setp) \
110 *setp |= (f); \
111 if (clrp) \
112 *clrp &= ~(f); \
113 } \
114 break; \
115 } \
116}
117
118/*
119 * string_to_flags --
120 * Take string of arguments and return stat flags. Return 0 on
121 * success, 1 on failure. On failure, stringp is set to point
122 * to the offending token.
123 */
124int
125string_to_flags(char **stringp, u_long *setp, u_long *clrp)
126{
127 int clear;
128 char *string, *p;
129
130 if (setp)
131 *setp = 0;
132 if (clrp)
133 *clrp = 0;
134
135#if HAVE_STRUCT_STAT_ST_FLAGS
136 string = *stringp;
137 while ((p = strsep(&string, "\t ,")) != NULL) {
138 clear = 0;
139 *stringp = p;
140 if (*p == '\0')
141 continue;
142 if (p[0] == 'n' && p[1] == 'o') {
143 clear = 1;
144 p += 2;
145 }
146 switch (p[0]) {
147 case 'a':
148 TEST(p, "arch", SF_ARCHIVED);
149 TEST(p, "archived", SF_ARCHIVED);
150 return (1);
151 case 'd':
152 clear = !clear;
153 TEST(p, "dump", UF_NODUMP);
154 return (1);
155 case 'n':
156 /*
157 * Support `nonodump'. Note that
158 * the state of clear is not changed.
159 */
160 TEST(p, "nodump", UF_NODUMP);
161 return (1);
162 case 'o':
163 TEST(p, "opaque", UF_OPAQUE);
164 return (1);
165 case 's':
166 TEST(p, "sappnd", SF_APPEND);
167 TEST(p, "sappend", SF_APPEND);
168 TEST(p, "schg", SF_IMMUTABLE);
169 TEST(p, "schange", SF_IMMUTABLE);
170 TEST(p, "simmutable", SF_IMMUTABLE);
171 return (1);
172 case 'u':
173 TEST(p, "uappnd", UF_APPEND);
174 TEST(p, "uappend", UF_APPEND);
175 TEST(p, "uchg", UF_IMMUTABLE);
176 TEST(p, "uchange", UF_IMMUTABLE);
177 TEST(p, "uimmutable", UF_IMMUTABLE);
178 return (1);
179 default:
180 return (1);
181 }
182 }
183#endif
184
185 return (0);
186}
