OpenCores
URL https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk

Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [sys/] [linux/] [confstr.c] - Blame information for rev 258

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 207 jeremybenn
/* Copyright (C) 1991, 1996, 1997, 2000, 2001 Free Software Foundation, Inc.
2
   This file is part of the GNU C Library.
3
 
4
   The GNU C Library is free software; you can redistribute it and/or
5
   modify it under the terms of the GNU Lesser General Public
6
   License as published by the Free Software Foundation; either
7
   version 2.1 of the License, or (at your option) any later version.
8
 
9
   The GNU C Library is distributed in the hope that it will be useful,
10
   but WITHOUT ANY WARRANTY; without even the implied warranty of
11
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12
   Lesser General Public License for more details.
13
 
14
   You should have received a copy of the GNU Lesser General Public
15
   License along with the GNU C Library; if not, write to the Free
16
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17
   02111-1307 USA.  */
18
 
19
#define _GNU_SOURCE 1
20
 
21
#include <stddef.h>
22
#include <errno.h>
23
#include <unistd.h>
24
#include <string.h>
25
#include <confstr.h>
26
 
27
/* If BUF is not NULL and LEN > 0, fill in at most LEN - 1 bytes
28
   of BUF with the value corresponding to NAME and zero-terminate BUF.
29
   Return the number of bytes required to hold NAME's entire value.  */
30
size_t
31
confstr (name, buf, len)
32
     int name;
33
     char *buf;
34
     size_t len;
35
{
36
  const char *string;
37
  size_t string_len;
38
 
39
  switch (name)
40
    {
41
    case _CS_PATH:
42
      {
43
        static const char cs_path[] = CS_PATH;
44
        string = cs_path;
45
        string_len = sizeof (cs_path);
46
      }
47
      break;
48
 
49
    case _CS_V6_WIDTH_RESTRICTED_ENVS:
50
      /* We have to return a newline-separated list of named of
51
         programming environements in which the widths of blksize_t,
52
         cc_t, mode_t, nfds_t, pid_t, ptrdiff_t, size_t, speed_t,
53
         ssize_t, suseconds_t, tcflag_t, useconds_t, wchar_t, and
54
         wint_t types are no greater than the width of type long.
55
 
56
         Currently this means all environment which the system allows.  */
57
      {
58
        static const char restenvs[] =
59
#if _POSIX_V6_ILP32_OFF32 > 0
60
        "_POSIX_V6_ILP32_OFF32"
61
#endif
62
#if _POSIX_V6_ILP32_OFFBIG > 0
63
# if _POSIX_V6_ILP32_OFF32 > 0
64
        "\n"
65
# endif
66
        "_POSIX_V6_ILP32_OFFBIG"
67
#endif
68
#if _POSIX_V6_LP64_OFF64 > 0
69
# if _POSIX_V6_ILP32_OFF32 > 0 || _POSIX_V6_ILP32_OFFBIG > 0
70
        "\n"
71
# endif
72
        "_POSIX_V6_LP64_OFF64"
73
#endif
74
#if _POSIX_V6_LPBIG_OFFBIG > 0
75
# if _POSIX_V6_ILP32_OFF32 > 0 || _POSIX_V6_ILP32_OFFBIG > 0 \
76
     || _POSIX_V6_LP64_OFF64 > 0
77
        "\n"
78
# endif
79
        "_POSIX_V6_LPBIG_OFFBIG"
80
#endif
81
          ;
82
        string = restenvs;
83
        string_len = sizeof (restenvs);
84
      }
85
      break;
86
 
87
    case _CS_XBS5_ILP32_OFFBIG_CFLAGS:
88
    case _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS:
89
    case _CS_LFS_CFLAGS:
90
#if _XBS5_LP64_OFF64 == -1 && _XBS5_LPBIG_OFFBIG == -1 && _XBS5_ILP32_OFFBIG == 1
91
      /* Signal that we want the new ABI.  */
92
      {
93
        static const char file_offset[] = "-D_FILE_OFFSET_BITS=64";
94
        string = file_offset;
95
        string_len = sizeof (file_offset);
96
      }
97
      break;
98
#endif
99
      /* FALLTHROUGH */
100
 
101
    case _CS_LFS_LINTFLAGS:
102
    case _CS_LFS_LDFLAGS:
103
    case _CS_LFS_LIBS:
104
    case _CS_LFS64_CFLAGS:
105
    case _CS_LFS64_LINTFLAGS:
106
    case _CS_LFS64_LDFLAGS:
107
    case _CS_LFS64_LIBS:
108
 
109
    case _CS_XBS5_ILP32_OFF32_CFLAGS:
110
    case _CS_XBS5_ILP32_OFF32_LDFLAGS:
111
    case _CS_XBS5_ILP32_OFF32_LIBS:
112
    case _CS_XBS5_ILP32_OFF32_LINTFLAGS:
113
    case _CS_XBS5_ILP32_OFFBIG_LDFLAGS:
114
    case _CS_XBS5_ILP32_OFFBIG_LIBS:
115
    case _CS_XBS5_ILP32_OFFBIG_LINTFLAGS:
116
    case _CS_XBS5_LP64_OFF64_CFLAGS:
117
    case _CS_XBS5_LP64_OFF64_LDFLAGS:
118
    case _CS_XBS5_LP64_OFF64_LIBS:
119
    case _CS_XBS5_LP64_OFF64_LINTFLAGS:
120
    case _CS_XBS5_LPBIG_OFFBIG_CFLAGS:
121
    case _CS_XBS5_LPBIG_OFFBIG_LDFLAGS:
122
    case _CS_XBS5_LPBIG_OFFBIG_LIBS:
123
    case _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS:
124
 
125
    case _CS_POSIX_V6_ILP32_OFF32_CFLAGS:
126
    case _CS_POSIX_V6_ILP32_OFF32_LDFLAGS:
127
    case _CS_POSIX_V6_ILP32_OFF32_LIBS:
128
    case _CS_POSIX_V6_ILP32_OFF32_LINTFLAGS:
129
    case _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS:
130
    case _CS_POSIX_V6_ILP32_OFFBIG_LIBS:
131
    case _CS_POSIX_V6_ILP32_OFFBIG_LINTFLAGS:
132
    case _CS_POSIX_V6_LP64_OFF64_CFLAGS:
133
    case _CS_POSIX_V6_LP64_OFF64_LDFLAGS:
134
    case _CS_POSIX_V6_LP64_OFF64_LIBS:
135
    case _CS_POSIX_V6_LP64_OFF64_LINTFLAGS:
136
    case _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS:
137
    case _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS:
138
    case _CS_POSIX_V6_LPBIG_OFFBIG_LIBS:
139
    case _CS_POSIX_V6_LPBIG_OFFBIG_LINTFLAGS:
140
      /* GNU libc does not require special actions to use LFS functions.  */
141
      string = "";
142
      string_len = 1;
143
      break;
144
 
145
    default:
146
      __set_errno (EINVAL);
147
      return 0;
148
    }
149
 
150
  if (len > 0 && buf != NULL)
151
    {
152
      if (string_len <= len)
153
        memcpy (buf, string, string_len);
154
      else
155
        {
156
          memcpy (buf, string, len - 1);
157
          buf[len - 1] = '\0';
158
        }
159
    }
160
  return string_len;
161
}

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.