1 /* Copyright (C) 1999, 2000 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
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
20 #include <sys/resource.h>
23 #include <sys/syscall.h>
24 #include <shlib-compat.h>
25 #include <bp-checks.h>
27 #include "kernel-features.h"
29 extern int __syscall_ugetrlimit (unsigned int resource
,
30 struct rlimit
*__unbounded rlimits
);
31 extern int __syscall_getrlimit (unsigned int resource
,
32 struct rlimit
*__unbounded rlimits
);
34 extern int __new_getrlimit (enum __rlimit_resource resource
,
35 struct rlimit
*__unbounded rlimits
);
38 /* Linux 2.3.25 introduced a new system call since the types used for
39 the limits are now unsigned. */
40 #if defined __NR_ugetrlimit && !defined __ASSUME_NEW_GETRLIMIT_SYSCALL
41 int __have_no_new_getrlimit
;
45 __new_getrlimit (enum __rlimit_resource resource
, struct rlimit
*rlimits
)
47 #ifdef __ASSUME_NEW_GETRLIMIT_SYSCALL
48 return INLINE_SYSCALL (ugetrlimit
, 2, resource
, CHECK_1 (rlimits
));
52 # ifdef __NR_ugetrlimit
53 if (__have_no_new_getrlimit
<= 0)
55 result
= INLINE_SYSCALL (ugetrlimit
, 2, resource
, CHECK_1 (rlimits
));
57 /* If the system call is available remember this fact and return. */
58 if (result
!= -1 || errno
!= ENOSYS
)
60 __have_no_new_getrlimit
= -1;
64 /* Remember that the system call is not available. */
65 __have_no_new_getrlimit
= 1;
69 /* Fall back to the old system call. */
70 result
= INLINE_SYSCALL (getrlimit
, 2, resource
, CHECK_1 (rlimits
));
75 /* We might have to correct the limits values. Since the old values
76 were signed the infinity value is too small. */
77 if (rlimits
->rlim_cur
== RLIM_INFINITY
>> 1)
78 rlimits
->rlim_cur
= RLIM_INFINITY
;
79 if (rlimits
->rlim_max
== RLIM_INFINITY
>> 1)
80 rlimits
->rlim_max
= RLIM_INFINITY
;
86 weak_alias (__new_getrlimit
, __getrlimit
);
87 versioned_symbol (libc
, __new_getrlimit
, getrlimit
, GLIBC_2_2
);