1 // SPDX-License-Identifier: GPL-2.0
4 #include <bpf/bpf_helpers.h>
5 #include <bpf/bpf_tracing.h>
7 #define PT_REGS_SIZE sizeof(struct pt_regs)
10 * The kernel struct pt_regs isn't exported in its entirety to userspace.
11 * Pass it as an array to task_pt_regs.c
13 char current_regs[PT_REGS_SIZE] = {};
14 char ctx_regs[PT_REGS_SIZE] = {};
17 SEC("uprobe/trigger_func")
18 int handle_uprobe(struct pt_regs *ctx)
20 struct task_struct *current;
23 current = bpf_get_current_task_btf();
24 regs = (struct pt_regs *) bpf_task_pt_regs(current);
25 if (bpf_probe_read_kernel(current_regs, PT_REGS_SIZE, regs))
27 if (bpf_probe_read_kernel(ctx_regs, PT_REGS_SIZE, ctx))
30 /* Prove that uprobe was run */
36 char _license[] SEC("license") = "GPL";