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1// SPDX-License-Identifier: GPL-2.02 3#include "vmlinux.h"4#include <bpf/bpf_helpers.h>5#include <bpf/bpf_tracing.h>6 7#define MAX_PATH_LEN		1288#define MAX_FILES		79 10pid_t my_pid = 0;11__u32 cnt_stat = 0;12__u32 cnt_close = 0;13char paths_stat[MAX_FILES][MAX_PATH_LEN] = {};14char paths_close[MAX_FILES][MAX_PATH_LEN] = {};15int rets_stat[MAX_FILES] = {};16int rets_close[MAX_FILES] = {};17 18int called_stat = 0;19int called_close = 0;20 21SEC("fentry/security_inode_getattr")22int BPF_PROG(prog_stat, struct path *path, struct kstat *stat,23	     __u32 request_mask, unsigned int query_flags)24{25	pid_t pid = bpf_get_current_pid_tgid() >> 32;26	__u32 cnt = cnt_stat;27	int ret;28 29	called_stat = 1;30 31	if (pid != my_pid)32		return 0;33 34	if (cnt >= MAX_FILES)35		return 0;36	ret = bpf_d_path(path, paths_stat[cnt], MAX_PATH_LEN);37 38	rets_stat[cnt] = ret;39	cnt_stat++;40	return 0;41}42 43SEC("fentry/filp_close")44int BPF_PROG(prog_close, struct file *file, void *id)45{46	pid_t pid = bpf_get_current_pid_tgid() >> 32;47	__u32 cnt = cnt_close;48	int ret;49 50	called_close = 1;51 52	if (pid != my_pid)53		return 0;54 55	if (cnt >= MAX_FILES)56		return 0;57	ret = bpf_d_path(&file->f_path,58			 paths_close[cnt], MAX_PATH_LEN);59 60	rets_close[cnt] = ret;61	cnt_close++;62	return 0;63}64 65char _license[] SEC("license") = "GPL";66