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// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/* Copyright (c) 2020 Andrii Nakryiko */
#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
#include "common.h"
char LICENSE[] SEC("license") = "Dual BSD/GPL";
/* BPF perfbuf map */
struct {
__uint(key_size, sizeof(int));
__uint(value_size, sizeof(int));
} pb SEC(".maps");
struct {
__uint(max_entries, 1);
__type(key, int);
__type(value, struct event);
} heap SEC(".maps");
int handle_exec(struct trace_event_raw_sched_process_exec *ctx)
unsigned fname_off = ctx->__data_loc_filename & 0xFFFF;
struct event *e;
int zero = 0;
e = bpf_map_lookup_elem(&heap, &zero);
if (!e) /* can't happen */
return 0;
e->pid = bpf_get_current_pid_tgid() >> 32;
bpf_get_current_comm(&e->comm, sizeof(e->comm));
bpf_probe_read_str(&e->filename, sizeof(e->filename), (void *)ctx + fname_off);
bpf_perf_event_output(ctx, &pb, BPF_F_CURRENT_CPU, e, sizeof(*e));
return 0;