1 /* Copyright (C) 2010 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>
21 #include <sys/syscall.h>
26 prlimit (__pid_t pid
, enum __rlimit_resource resource
,
27 __const
struct rlimit
*new_rlimit
, struct rlimit
*old_rlimit
)
29 struct rlimit64 new_rlimit64_mem
;
30 struct rlimit64
*new_rlimit64
= NULL
;
31 struct rlimit64 old_rlimit64_mem
;
32 struct rlimit64
*old_rlimit64
= (old_rlimit
!= NULL
33 ? &old_rlimit64_mem
: NULL
);
35 if (new_rlimit
!= NULL
)
37 if (new_rlimit
->rlim_cur
== RLIM_INFINITY
)
38 new_rlimit64_mem
.rlim_cur
= RLIM64_INFINITY
;
40 new_rlimit64_mem
.rlim_cur
= new_rlimit
->rlim_cur
;
41 if (new_rlimit
->rlim_max
== RLIM_INFINITY
)
42 new_rlimit64_mem
.rlim_max
= RLIM64_INFINITY
;
44 new_rlimit64_mem
.rlim_max
= new_rlimit
->rlim_max
;
45 new_rlimit64
= &new_rlimit64_mem
;
48 int res
= INLINE_SYSCALL (prlimit64
, 4, pid
, resource
, new_rlimit64
,
51 if (res
== 0 && old_rlimit
!= NULL
)
53 /* The prlimit64 syscall is ill-designed for 32-bit machines.
54 We have to provide a 32-bit variant since otherwise the LFS
55 system would not work. But what shall we do if the syscall
56 succeeds but the old values do not fit into a rlimit
57 structure? We cannot return an error because the operation
58 itself worked. Best is perhaps to return RLIM_INFINITY. */
59 old_rlimit
->rlim_cur
= old_rlimit64_mem
.rlim_cur
;
60 if (old_rlimit
->rlim_cur
!= old_rlimit64_mem
.rlim_cur
)
62 if (new_rlimit
== NULL
)
64 __set_errno (EOVERFLOW
);
67 old_rlimit
->rlim_cur
= RLIM_INFINITY
;
69 old_rlimit
->rlim_max
= old_rlimit64_mem
.rlim_max
;
70 if (old_rlimit
->rlim_max
!= old_rlimit64_mem
.rlim_max
)
72 if (new_rlimit
== NULL
)
74 __set_errno (EOVERFLOW
);
77 old_rlimit
->rlim_max
= RLIM_INFINITY
;
85 prlimit (__pid_t pid
, enum __rlimit_resource resource
,
86 __const
struct rlimit
*new_rlimit
, struct rlimit
*old_rlimit
)
91 stub_warning (prlimit
)