1/*	$NetBSD: compat_stat.c,v 1.3 2013/10/04 20:49:16 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 1.3 2013/10/04 20:49:16 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
59static void cvtstat(const struct stat *, struct stat12 *);
60
61__strong_alias(stat, __compat_stat)
62__strong_alias(lstat, __compat_lstat)
63__strong_alias(fstat, __compat_fstat)
64
65static void
66cvtstat(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
92int
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
104int
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
116int
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