1 /* Resource limits.
2 Copyright (C) 1994-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #include <hurd.h>
20 #include <lock-intern.h>
21 #include <hurd/resource.h>
22 #include "set-hooks.h"
23
24 /* This must be given an initializer, or the a.out linking rules will
25 not include the entire file when this symbol is referenced. */
26 struct rlimit _hurd_rlimits[RLIM_NLIMITS] = { { 0, }, };
27
28 /* This must be initialized data for the same reason as above, but this is
29 intentionally initialized to a bogus value to emphasize the point that
30 mutex_init is still required below just in case of unexec. */
31 struct mutex _hurd_rlimit_lock = { SPIN_LOCK_INITIALIZER, };
32
33 static void attribute_used_retain
init_rlimit(void)34 init_rlimit (void)
35 {
36 int i;
37
38 __mutex_init (&_hurd_rlimit_lock);
39
40 for (i = 0; i < RLIM_NLIMITS; ++i)
41 {
42 if (_hurd_rlimits[i].rlim_max == 0)
43 _hurd_rlimits[i].rlim_max = RLIM_INFINITY;
44 if (_hurd_rlimits[i].rlim_cur == 0)
45 #define I(lim, val) case RLIMIT_##lim: _hurd_rlimits[i].rlim_cur = (val); break
46 switch (i)
47 {
48 I (NOFILE, 1024); /* Linux 2.2.12 uses this initial value. */
49
50 default:
51 _hurd_rlimits[i].rlim_cur = _hurd_rlimits[i].rlim_max;
52 break;
53 }
54 #undef I
55 }
56 }
57 SET_RELHOOK (_hurd_preinit_hook, init_rlimit);
58