1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/* Copyright (C) 1991, 1996, 1997, 2000, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <stddef.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <confstr.h>
/* If BUF is not NULL and LEN > 0, fill in at most LEN - 1 bytes
of BUF with the value corresponding to NAME and zero-terminate BUF.
Return the number of bytes required to hold NAME's entire value. */
size_t
confstr (name, buf, len)
int name;
char *buf;
size_t len;
{
const char *string;
size_t string_len;
switch (name)
{
case _CS_PATH:
{
static const char cs_path[] = CS_PATH;
string = cs_path;
string_len = sizeof (cs_path);
}
break;
case _CS_XBS5_ILP32_OFFBIG_CFLAGS:
case _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS:
case _CS_LFS_CFLAGS:
#if _XBS5_LP64_OFF64 == -1 && _XBS5_LPBIG_OFFBIG == -1 && _XBS5_ILP32_OFFBIG == 1
/* Signal that we want the new ABI. */
{
static const char file_offset[] = "-D_FILE_OFFSET_BITS=64";
string = file_offset;
string_len = sizeof (file_offset);
}
break;
#endif
case _CS_LFS_LINTFLAGS:
case _CS_LFS_LDFLAGS:
case _CS_LFS_LIBS:
case _CS_LFS64_CFLAGS:
case _CS_LFS64_LINTFLAGS:
case _CS_LFS64_LDFLAGS:
case _CS_LFS64_LIBS:
case _CS_XBS5_ILP32_OFF32_CFLAGS:
case _CS_XBS5_ILP32_OFF32_LDFLAGS:
case _CS_XBS5_ILP32_OFF32_LIBS:
case _CS_XBS5_ILP32_OFF32_LINTFLAGS:
case _CS_XBS5_ILP32_OFFBIG_LDFLAGS:
case _CS_XBS5_ILP32_OFFBIG_LIBS:
case _CS_XBS5_ILP32_OFFBIG_LINTFLAGS:
case _CS_XBS5_LP64_OFF64_CFLAGS:
case _CS_XBS5_LP64_OFF64_LDFLAGS:
case _CS_XBS5_LP64_OFF64_LIBS:
case _CS_XBS5_LP64_OFF64_LINTFLAGS:
case _CS_XBS5_LPBIG_OFFBIG_CFLAGS:
case _CS_XBS5_LPBIG_OFFBIG_LDFLAGS:
case _CS_XBS5_LPBIG_OFFBIG_LIBS:
case _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS:
case _CS_POSIX_V6_ILP32_OFF32_CFLAGS:
case _CS_POSIX_V6_ILP32_OFF32_LDFLAGS:
case _CS_POSIX_V6_ILP32_OFF32_LIBS:
case _CS_POSIX_V6_ILP32_OFF32_LINTFLAGS:
case _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS:
case _CS_POSIX_V6_ILP32_OFFBIG_LIBS:
case _CS_POSIX_V6_ILP32_OFFBIG_LINTFLAGS:
case _CS_POSIX_V6_LP64_OFF64_CFLAGS:
case _CS_POSIX_V6_LP64_OFF64_LDFLAGS:
case _CS_POSIX_V6_LP64_OFF64_LIBS:
case _CS_POSIX_V6_LP64_OFF64_LINTFLAGS:
case _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS:
case _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS:
case _CS_POSIX_V6_LPBIG_OFFBIG_LIBS:
case _CS_POSIX_V6_LPBIG_OFFBIG_LINTFLAGS:
/* GNU libc does not require special actions to use LFS functions. */
string = "";
string_len = 1;
break;
default:
__set_errno (EINVAL);
return 0;
}
if (len > 0 && buf != NULL)
{
if (string_len <= len)
memcpy (buf, string, string_len);
else
{
memcpy (buf, string, len - 1);
buf[len - 1] = '\0';
}
}
return string_len;
}
|
