summaryrefslogtreecommitdiff
path: root/tools/testing/selftests/bpf/progs/kprobe_write_ctx.c
blob: f77aef0474d3b61cd048a0207fbcdd4f6d82aa57 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
// SPDX-License-Identifier: GPL-2.0
#include "vmlinux.h"
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>

char _license[] SEC("license") = "GPL";

#if defined(__TARGET_ARCH_x86)
SEC("kprobe")
int kprobe_write_ctx(struct pt_regs *ctx)
{
	ctx->ax = 0;
	return 0;
}

SEC("kprobe.multi")
int kprobe_multi_write_ctx(struct pt_regs *ctx)
{
	ctx->ax = 0;
	return 0;
}
#endif