resource.h

 1/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
 2/*
 3 * Resource definitions for NOLIBC
 4 * Copyright (C) 2017-2021 Willy Tarreau <w@1wt.eu>
 5 */
 6
 7/* make sure to include all global symbols */
 8#include "../nolibc.h"
 9
10#ifndef _NOLIBC_SYS_RESOURCE_H
11#define _NOLIBC_SYS_RESOURCE_H
12
13#include "../sys.h"
14
15#include <linux/resource.h>
16
17/*
18 * int getrlimit(int resource, struct rlimit *rlim);
19 * int setrlimit(int resource, const struct rlimit *rlim);
20 */
21
22static __attribute__((unused))
23int sys_prlimit64(pid_t pid, int resource,
24		  const struct rlimit64 *new_limit, struct rlimit64 *old_limit)
25{
26	return my_syscall4(__NR_prlimit64, pid, resource, new_limit, old_limit);
27}
28
29static __attribute__((unused))
30int getrlimit(int resource, struct rlimit *rlim)
31{
32	struct rlimit64 rlim64;
33	int ret;
34
35	ret = __sysret(sys_prlimit64(0, resource, NULL, &rlim64));
36	rlim->rlim_cur = rlim64.rlim_cur;
37	rlim->rlim_max = rlim64.rlim_max;
38
39	return ret;
40}
41
42static __attribute__((unused))
43int setrlimit(int resource, const struct rlimit *rlim)
44{
45	struct rlimit64 rlim64 = {
46		.rlim_cur = rlim->rlim_cur,
47		.rlim_max = rlim->rlim_max,
48	};
49
50	return __sysret(sys_prlimit64(0, resource, &rlim64, NULL));
51}
52
53#endif /* _NOLIBC_SYS_RESOURCE_H */