| // SPDX-License-Identifier: GPL-2.0 |
| #include <vmlinux.h> |
| #include <bpf/bpf_helpers.h> |
| |
| struct { |
| __uint(type, BPF_MAP_TYPE_ARRAY); |
| __uint(max_entries, 1); |
| __type(key, __u32); |
| __type(value, __u64); |
| } array_map SEC(".maps"); |
| |
| static __u64 |
| check_array_elem(struct bpf_map *map, __u32 *key, __u64 *val, |
| void *data) |
| { |
| bpf_get_current_comm(key, sizeof(*key)); |
| return 0; |
| } |
| |
| SEC("raw_tp/sys_enter") |
| int test_map_key_write(const void *ctx) |
| { |
| bpf_for_each_map_elem(&array_map, check_array_elem, NULL, 0); |
| return 0; |
| } |
| |
| char _license[] SEC("license") = "GPL"; |