1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* Copyright (c) 2021 SUSE LLC */
3
4 #ifndef LAPI_CLOSE_RANGE__
5 # define LAPI_CLOSE_RANGE__
6
7 # include "lapi/syscalls.h"
8
9 # ifdef HAVE_LINUX_CLOSE_RANGE_H
10 # include <linux/close_range.h>
11 # endif
12
13 # ifndef CLOSE_RANGE_UNSHARE
14 # define CLOSE_RANGE_UNSHARE (1U << 1)
15 # endif
16
17 # ifndef CLOSE_RANGE_CLOEXEC
18 # define CLOSE_RANGE_CLOEXEC (1U << 2)
19 # endif
20
21 # ifndef HAVE_CLOSE_RANGE
close_range(unsigned int fd,unsigned int max_fd,unsigned int flags)22 static inline int close_range(unsigned int fd, unsigned int max_fd,
23 unsigned int flags)
24 {
25 return tst_syscall(__NR_close_range, fd, max_fd, flags);
26 }
27 # endif
28
close_range_supported_by_kernel(void)29 static inline void close_range_supported_by_kernel(void)
30 {
31 long ret;
32
33 if ((tst_kvercmp(5, 9, 0)) < 0) {
34 /* Check if the syscall is backported on an older kernel */
35 ret = syscall(__NR_close_range, 1, 0, 0);
36 if (ret == -1 && errno == ENOSYS)
37 tst_brk(TCONF, "Test not supported on kernel version < v5.9");
38 }
39 }
40
41 #endif /* LAPI_CLOSE_RANGE_H__ */
42