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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
|
/* Copyright (C) 1993, 1995, 1996 Free Software Foundation, Inc.
Contributed by Brendan Kehoe (brendan@zen.org).
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., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <ansidecl.h>
#include <errno.h>
#include <limits.h>
#include <unistd.h>
#include <stdio.h>
#include <time.h>
#include <sysconfig.h>
extern int EXFUN(__sysconfig, (int));
/* Get the value of the system variable NAME. */
long int
DEFUN(__sysconf, (name), int name)
{
switch (name)
{
default:
errno = EINVAL;
return -1;
case _SC_ARG_MAX:
#ifdef ARG_MAX
return ARG_MAX;
#else
return -1;
#endif
case _SC_CHILD_MAX:
#ifdef CHILD_MAX
return CHILD_MAX;
#else
return -1;
#endif
case _SC_CLK_TCK:
return __sysconfig (_CONFIG_CLK_TCK);
case _SC_NGROUPS_MAX:
#ifdef NGROUPS_MAX
return NGROUPS_MAX;
#else
return -1;
#endif
/* Both of these are looking for _CONFIG_OPEN_FILES. */
case _SC_OPEN_MAX:
case _SC_STREAM_MAX:
return __sysconfig (_CONFIG_OPEN_FILES);
case _SC_TZNAME_MAX:
return __tzname_max ();
case _SC_JOB_CONTROL:
#ifdef _POSIX_JOB_CONTROL
return 1;
#else
return -1;
#endif
case _SC_SAVED_IDS:
#ifdef _POSIX_SAVED_IDS
return 1;
#else
return -1;
#endif
case _SC_REALTIME_SIGNALS:
#ifdef _POSIX_REALTIME_SIGNALS
return 1;
#else
return -1;
#endif
case _SC_PRIORITY_SCHEDULING:
#ifdef _POSIX_PRIORITY_SCHEDULING
return 1;
#else
return -1;
#endif
case _SC_TIMERS:
#ifdef _POSIX_TIMERS
return 1;
#else
return -1;
#endif
case _SC_ASYNCHRONOUS_IO:
#ifdef _POSIX_ASYNCHRONOUS_IO
return 1;
#else
return -1;
#endif
case _SC_PRIORITIZED_IO:
#ifdef _POSIX_PRIORITIZED_IO
return 1;
#else
return -1;
#endif
case _SC_SYNCHRONIZED_IO:
#ifdef _POSIX_SYNCHRONIZED_IO
return 1;
#else
return -1;
#endif
case _SC_FSYNC:
#ifdef _POSIX_FSYNC
return 1;
#else
return -1;
#endif
case _SC_MAPPED_FILES:
#ifdef _POSIX_MAPPED_FILES
return 1;
#else
return -1;
#endif
case _SC_MEMLOCK:
#ifdef _POSIX_MEMLOCK
return 1;
#else
return -1;
#endif
case _SC_MEMLOCK_RANGE:
#ifdef _POSIX_MEMLOCK_RANGE
return 1;
#else
return -1;
#endif
case _SC_MEMORY_PROTECTION:
#ifdef _POSIX_MEMORY_PROTECTION
return 1;
#else
return -1;
#endif
case _SC_MESSAGE_PASSING:
#ifdef _POSIX_MESSAGE_PASSING
return 1;
#else
return -1;
#endif
case _SC_SEMAPHORES:
#ifdef _POSIX_SEMAPHORES
return 1;
#else
return -1;
#endif
case _SC_SHARED_MEMORY_OBJECTS:
#ifdef _POSIX_SHARED_MEMORY_OBJECTS
return 1;
#else
return -1;
#endif
case _SC_VERSION:
return _POSIX_VERSION;
case _SC_PAGESIZE:
return __sysconfig (_CONFIG_PAGESIZE);
case _SC_BC_BASE_MAX:
#ifdef BC_BASE_MAX
return BC_BASE_MAX;
#else
return -1;
#endif
case _SC_BC_DIM_MAX:
#ifdef BC_DIM_MAX
return BC_DIM_MAX;
#else
return -1;
#endif
case _SC_BC_SCALE_MAX:
#ifdef BC_SCALE_MAX
return BC_SCALE_MAX;
#else
return -1;
#endif
case _SC_BC_STRING_MAX:
#ifdef BC_STRING_MAX
return BC_STRING_MAX;
#else
return -1;
#endif
case _SC_EQUIV_CLASS_MAX:
#ifdef EQUIV_CLASS_MAX
return EQUIV_CLASS_MAX;
#else
return -1;
#endif
case _SC_EXPR_NEST_MAX:
#ifdef EXPR_NEST_MAX
return EXPR_NEST_MAX;
#else
return -1;
#endif
case _SC_LINE_MAX:
#ifdef LINE_MAX
return LINE_MAX;
#else
return -1;
#endif
case _SC_RE_DUP_MAX:
#ifdef RE_DUP_MAX
return RE_DUP_MAX;
#else
return -1;
#endif
case _SC_CHARCLASS_NAME_MAX:
#ifdef CHARCLASS_NAME_MAX
return CHARCLASS_NAME_MAX;
#else
return -1;
#endif
case _SC_2_VERSION:
/* This is actually supposed to return the version
of the 1003.2 utilities on the system {POSIX2_VERSION}. */
return _POSIX2_C_VERSION;
case _SC_2_C_BIND:
#ifdef _POSIX2_C_BIND
return _POSIX2_C_BIND;
#else
return -1;
#endif
case _SC_2_C_DEV:
#ifdef _POSIX2_C_DEV
return _POSIX2_C_DEV;
#else
return -1;
#endif
case _SC_2_FORT_DEV:
#ifdef _POSIX2_FORT_DEV
return _POSIX2_FORT_DEV;
#else
return -1;
#endif
case _SC_2_SW_DEV:
#ifdef _POSIX2_SW_DEV
return _POSIX2_SW_DEV;
#else
return -1;
#endif
}
}
weak_alias (__sysconf, sysconf)
|
