1 | /* Copyright (C) 1991-2024 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
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. |
8 | |
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. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <errno.h> |
19 | |
20 | #include <hurd.h> |
21 | #include <hurd/fd.h> |
22 | #include <hurd/resource.h> |
23 | |
24 | /* Set the soft and hard limits for RESOURCE to *RLIMITS. |
25 | Only the super-user can increase hard limits. |
26 | Return 0 if successful, -1 if not (and sets errno). */ |
27 | int |
28 | __setrlimit (enum __rlimit_resource resource, const struct rlimit *rlimits) |
29 | { |
30 | struct rlimit lim; |
31 | |
32 | if (rlimits == NULL || (unsigned int) resource >= RLIMIT_NLIMITS) |
33 | return __hurd_fail (EINVAL); |
34 | |
35 | lim = *rlimits; |
36 | |
37 | /* Even though most limits do nothing, there is no inheritance, and hard |
38 | limits are not really hard, we just let any old call succeed to make |
39 | life easier for programs that expect normal behavior. */ |
40 | |
41 | if (lim.rlim_cur > lim.rlim_max) |
42 | lim.rlim_cur = lim.rlim_max; |
43 | |
44 | HURD_CRITICAL_BEGIN; |
45 | __mutex_lock (&_hurd_rlimit_lock); |
46 | _hurd_rlimits[resource] = lim; |
47 | __mutex_unlock (&_hurd_rlimit_lock); |
48 | HURD_CRITICAL_END; |
49 | |
50 | return 0; |
51 | } |
52 | |
53 | libc_hidden_def (__setrlimit) |
54 | weak_alias (__setrlimit, setrlimit) |
55 | |