1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (C) 2024. Huawei Technologies Co., Ltd */
3 #include <linux/types.h>
4 #include <bpf/bpf_helpers.h>
12 char _license[] SEC("license") = "GPL";
14 SEC("fentry/" SYS_PREFIX "sys_nanosleep")
15 int do_probe_read(void *ctx)
19 if ((bpf_get_current_pid_tgid() >> 32) != target_pid)
22 read_ret[0] = bpf_probe_read_kernel(buf, sizeof(buf), user_ptr);
23 read_ret[1] = bpf_probe_read_kernel_str(buf, sizeof(buf), user_ptr);
24 read_ret[2] = bpf_probe_read(buf, sizeof(buf), user_ptr);
25 read_ret[3] = bpf_probe_read_str(buf, sizeof(buf), user_ptr);
26 read_ret[4] = bpf_probe_read_user(buf, sizeof(buf), user_ptr);
27 read_ret[5] = bpf_probe_read_user_str(buf, sizeof(buf), user_ptr);
32 SEC("fentry.s/" SYS_PREFIX "sys_nanosleep")
33 int do_copy_from_user(void *ctx)
37 if ((bpf_get_current_pid_tgid() >> 32) != target_pid)
40 read_ret[6] = bpf_copy_from_user(buf, sizeof(buf), user_ptr);
41 read_ret[7] = bpf_copy_from_user_task(buf, sizeof(buf), user_ptr,
42 bpf_get_current_task_btf(), 0);