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
|
/* Copyright (C) 1999, 2000, 2003, 2006 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <sys/param.h>
#include <sys/resource.h>
#include <sysdep.h>
#include <sys/syscall.h>
#include <shlib-compat.h>
#include <bp-checks.h>
#include <kernel-features.h>
extern int __new_setrlimit (enum __rlimit_resource resource,
const struct rlimit *__unboundedrlimits);
/* 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
extern int __have_no_new_getrlimit; /* from getrlimit.c */
#endif
int
__new_setrlimit (enum __rlimit_resource resource, const struct rlimit *rlimits)
{
#ifdef __ASSUME_NEW_GETRLIMIT_SYSCALL
return INLINE_SYSCALL (setrlimit, 2, resource, CHECK_1 (rlimits));
#else
struct rlimit rlimits_small;
# ifdef __NR_ugetrlimit
if (__have_no_new_getrlimit == 0)
{
/* Check if the new ugetrlimit syscall exists. We must do this
first because older kernels don't reject negative rlimit
values in setrlimit. */
int result = INLINE_SYSCALL (ugetrlimit, 2, resource, __ptrvalue (&rlimits_small));
if (result != -1 || errno != ENOSYS)
/* The syscall exists. */
__have_no_new_getrlimit = -1;
else
/* The syscall does not exist. */
__have_no_new_getrlimit = 1;
}
if (__have_no_new_getrlimit < 0)
return INLINE_SYSCALL (setrlimit, 2, resource, CHECK_1 (rlimits));
# endif
/* We might have to correct the limits values. Since the old values
were signed the new values might be too large. */
rlimits_small.rlim_cur = MIN ((unsigned long int) rlimits->rlim_cur,
RLIM_INFINITY >> 1);
rlimits_small.rlim_max = MIN ((unsigned long int) rlimits->rlim_max,
RLIM_INFINITY >> 1);
/* Use the adjusted values. */
return INLINE_SYSCALL (setrlimit, 2, resource, __ptrvalue (&rlimits_small));
#endif
}
weak_alias (__new_setrlimit, __setrlimit);
versioned_symbol (libc, __new_setrlimit, setrlimit, GLIBC_2_2);
|
