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
|
/* Copyright (C) 1999, 2000 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 <errno.h>
#include <sys/resource.h>
#include <sysdep.h>
#include <sys/syscall.h>
#include <shlib-compat.h>
#include "kernel-features.h"
extern int __syscall_ugetrlimit (unsigned int resource,
struct rlimit *rlimits);
extern int __syscall_getrlimit (unsigned int resource, struct rlimit *rlimits);
/* Linux 2.3.25 introduced a new system call since the types used for
the limits are now unsigned. */
#if defined __NR_ugetrlimit && !defined __ASSUME_NEW_GETRLIMIT_SYSCALL
int __have_no_new_getrlimit;
#endif
int
__new_getrlimit (enum __rlimit_resource resource, struct rlimit *rlimits)
{
#ifdef __ASSUME_NEW_GETRLIMIT_SYSCALL
return INLINE_SYSCALL (ugetrlimit, 2, resource, rlimits);
#else
int result;
# ifdef __NR_ugetrlimit
if (__have_no_new_getrlimit <= 0)
{
result = INLINE_SYSCALL (ugetrlimit, 2, resource, rlimits);
/* If the system call is available remember this fact and return. */
if (result != -1 || errno != ENOSYS)
{
__have_no_new_getrlimit = -1;
return result;
}
/* Remember that the system call is not available. */
__have_no_new_getrlimit = 1;
}
# endif
/* Fall back to the old system call. */
result = INLINE_SYSCALL (getrlimit, 2, resource, rlimits);
if (result == -1)
return result;
/* We might have to correct the limits values. Since the old values
were signed the infinity value is too small. */
if (rlimits->rlim_cur == RLIM_INFINITY >> 1)
rlimits->rlim_cur = RLIM_INFINITY;
if (rlimits->rlim_max == RLIM_INFINITY >> 1)
rlimits->rlim_max = RLIM_INFINITY;
return result;
#endif
}
weak_alias (__new_getrlimit, __getrlimit);
versioned_symbol (libc, __new_getrlimit, getrlimit, GLIBC_2_2);
|
