Files
bpf-developer-tutorial/4-opensnoop/opensnoop.bpf.c
2022-12-06 16:10:45 +08:00

22 lines
556 B
C

#include <vmlinux.h>
#include <bpf/bpf_helpers.h>
/// @description "Process ID to trace"
const volatile int pid_target = 0;
SEC("tracepoint/syscalls/sys_enter_openat")
int tracepoint__syscalls__sys_enter_openat(struct trace_event_raw_sys_enter* ctx)
{
u64 id = bpf_get_current_pid_tgid();
u32 pid = id;
if (pid_target && pid_target != pid)
return false;
// Use bpf_printk to print the process information
bpf_printk("Process ID: %d enter sys openat\n", pid);
return 0;
}
/// "Trace open family syscalls."
char LICENSE[] SEC("license") = "GPL";