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// SPDX-License-Identifier: GPL-2.0
#include "vmlinux.h"
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
#define MAX_PATH_LEN 128
#define MAX_FILES 7
pid_t my_pid = 0;
__u32 cnt_stat = 0;
__u32 cnt_close = 0;
char paths_stat[MAX_FILES][MAX_PATH_LEN] = {};
char paths_close[MAX_FILES][MAX_PATH_LEN] = {};
int rets_stat[MAX_FILES] = {};
int rets_close[MAX_FILES] = {};
int called_stat = 0;
int called_close = 0;
SEC("fentry/security_inode_getattr")
int BPF_PROG(prog_stat, struct path *path, struct kstat *stat,
__u32 request_mask, unsigned int query_flags)
{
pid_t pid = bpf_get_current_pid_tgid() >> 32;
__u32 cnt = cnt_stat;
int ret;
called_stat = 1;
if (pid != my_pid)
return 0;
if (cnt >= MAX_FILES)
return 0;
ret = bpf_d_path(path, paths_stat[cnt], MAX_PATH_LEN);
rets_stat[cnt] = ret;
cnt_stat++;
return 0;
}
SEC("fentry/filp_close")
int BPF_PROG(prog_close, struct file *file, void *id)
{
pid_t pid = bpf_get_current_pid_tgid() >> 32;
__u32 cnt = cnt_close;
int ret;
called_close = 1;
if (pid != my_pid)
return 0;
if (cnt >= MAX_FILES)
return 0;
ret = bpf_d_path(&file->f_path,
paths_close[cnt], MAX_PATH_LEN);
rets_close[cnt] = ret;
cnt_close++;
return 0;
}
char _license[] SEC("license") = "GPL";
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