1 /* $NetBSD: compat_stat.c,v 1.4 2013/10/04 21:07:37 christos Exp $ */
2
3 /*
4 * Copyright (c) 1997 Frank van der Linden
5 * 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. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed for the NetBSD Project
18 * by Frank van der Linden
19 * 4. The name of the author may not be used to endorse or promote products
20 * derived from this software without specific prior written permission
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34 #include <sys/cdefs.h>
35 #if defined(LIBC_SCCS) && !defined(lint)
36 __RCSID("$NetBSD: compat_stat.c,v 1.4 2013/10/04 21:07:37 christos Exp $");
37 #endif /* LIBC_SCCS and not lint */
38
39 #define __LIBC12_SOURCE__
40
41 #include <sys/types.h>
42 #include <sys/stat.h>
43 #include <compat/sys/time.h>
44 #include <compat/sys/stat.h>
45
46 __warn_references(stat,
47 "warning: reference to compatibility stat(); include <sys/stat.h> to generate correct reference")
48
49 __warn_references(fstat,
50 "warning: reference to compatibility fstat(); include <sys/stat.h> to generate correct reference")
51
52 __warn_references(lstat,
53 "warning: reference to compatibility lstat(); include <sys/stat.h> to generate correct reference")
54
55 /*
56 * Convert from a new to an old stat structure.
57 */
58
59 static void cvtstat(const struct stat *, struct stat12 *);
60
__strong_alias(stat,__compat_stat)61 __strong_alias(stat, __compat_stat)
62 __strong_alias(lstat, __compat_lstat)
63 __strong_alias(fstat, __compat_fstat)
64
65 static void
66 cvtstat(const struct stat *st, struct stat12 *ost)
67 {
68
69 ost->st_dev = (uint32_t)st->st_dev;
70 ost->st_ino = (uint32_t)st->st_ino;
71 ost->st_mode = st->st_mode;
72 if (st->st_nlink >= (1 << 15))
73 ost->st_nlink = (1 << 15) - 1;
74 else
75 ost->st_nlink = st->st_nlink;
76 ost->st_uid = st->st_uid;
77 ost->st_gid = st->st_gid;
78 ost->st_rdev = (uint32_t)st->st_rdev;
79 ost->st_atimespec.tv_sec = (int32_t)st->st_atimespec.tv_sec;
80 ost->st_atimespec.tv_nsec = st->st_atimespec.tv_nsec;
81 ost->st_mtimespec.tv_sec = (int32_t)st->st_mtimespec.tv_sec;
82 ost->st_mtimespec.tv_nsec = st->st_mtimespec.tv_nsec;
83 ost->st_ctimespec.tv_sec = (int32_t)st->st_ctimespec.tv_sec;
84 ost->st_ctimespec.tv_nsec = st->st_ctimespec.tv_nsec;
85 ost->st_size = st->st_size;
86 ost->st_blocks = st->st_blocks;
87 ost->st_blksize = st->st_blksize;
88 ost->st_flags = st->st_flags;
89 ost->st_gen = st->st_gen;
90 }
91
92 int
__compat_stat(const char * file,struct stat12 * ost)93 __compat_stat(const char *file, struct stat12 *ost)
94 {
95 struct stat nst;
96 int ret;
97
98 if ((ret = __stat50(file, &nst)) < 0)
99 return ret;
100 cvtstat(&nst, ost);
101 return ret;
102 }
103
104 int
__compat_fstat(int f,struct stat12 * ost)105 __compat_fstat(int f, struct stat12 *ost)
106 {
107 struct stat nst;
108 int ret;
109
110 if ((ret = __fstat50(f, &nst)) < 0)
111 return ret;
112 cvtstat(&nst, ost);
113 return ret;
114 }
115
116 int
__compat_lstat(const char * file,struct stat12 * ost)117 __compat_lstat(const char *file, struct stat12 *ost)
118 {
119 struct stat nst;
120 int ret;
121
122 if ((ret = __lstat50(file, &nst)) < 0)
123 return ret;
124 cvtstat(&nst, ost);
125 return ret;
126 }
127