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
|
/* Copyright (C) 1991, 1993, 1995, 1996, 1997 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 <stdlib.h>
#include <unistd.h>
#include <sys/resource.h>
#include <limits.h>
#define __LOCAL_OPEN_MAX 256
/* Return the maximum number of file descriptors
the current process could possibly have. */
int getdtablesize (void)
{
struct rlimit ru;
/* This should even work if `getrlimit' is not implemented. POSIX.1
does not define this function but we will generate a stub which
returns -1. */
return getrlimit (RLIMIT_NOFILE, &ru) < 0 ? __LOCAL_OPEN_MAX : ru.rlim_cur;
}
|
