tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1#include <asm/unistd.h>
2#include <linux/bpf.h>
3#include <unistd.h>
4
5#ifndef __NR_bpf
6# if defined(__i386__)
7# define __NR_bpf 357
8# elif defined(__x86_64__)
9# define __NR_bpf 321
10# elif defined(__aarch64__)
11# define __NR_bpf 280
12# elif defined(__sparc__)
13# define __NR_bpf 349
14# elif defined(__s390__)
15# define __NR_bpf 351
16# else
17# error __NR_bpf not defined. libbpf does not support your arch.
18# endif
19#endif
20
21int main(void)
22{
23 union bpf_attr attr;
24
25 /* Check fields in attr */
26 attr.prog_type = BPF_PROG_TYPE_KPROBE;
27 attr.insn_cnt = 0;
28 attr.insns = 0;
29 attr.license = 0;
30 attr.log_buf = 0;
31 attr.log_size = 0;
32 attr.log_level = 0;
33 attr.kern_version = 0;
34 attr.prog_flags = 0;
35
36 /*
37 * Test existence of __NR_bpf and BPF_PROG_LOAD.
38 * This call should fail if we run the testcase.
39 */
40 return syscall(__NR_bpf, BPF_PROG_LOAD, &attr, sizeof(attr));
41}