Files
TripleCross/external/libbpf-bootstrap/examples/c/kprobe.bpf.c
2021-11-20 21:07:23 -05:00

31 lines
738 B
C

// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/* Copyright (c) 2021 Sartura */
#include "vmlinux.h"
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
#include <bpf/bpf_core_read.h>
char LICENSE[] SEC("license") = "Dual BSD/GPL";
SEC("kprobe/do_unlinkat")
int BPF_KPROBE(do_unlinkat, int dfd, struct filename *name)
{
pid_t pid;
const char *filename;
pid = bpf_get_current_pid_tgid() >> 32;
filename = BPF_CORE_READ(name, name);
bpf_printk("KPROBE ENTRY pid = %d, filename = %s\n", pid, filename);
return 0;
}
SEC("kretprobe/do_unlinkat")
int BPF_KRETPROBE(do_unlinkat_exit, long ret)
{
pid_t pid;
pid = bpf_get_current_pid_tgid() >> 32;
bpf_printk("KPROBE EXIT: pid = %d, ret = %ld\n", pid, ret);
return 0;
}