// SPDX-License-Identifier: GPL-2.0 #include "vmlinux.h" #include <bpf/bpf_helpers.h> __u32 set_pid = 0; __u64 set_key = 0; __u64 set_value = 0; struct { __uint(type, BPF_MAP_TYPE_HASH); __uint(max_entries, 2); __type(key, __u64); __type(value, __u64); } hash_map SEC(".maps"); SEC("tp/syscalls/sys_enter_getpgid") int bpf_lookup_and_delete_test(const void *ctx) { if (set_pid == bpf_get_current_pid_tgid() >> 32) bpf_map_update_elem(&hash_map, &set_key, &set_value, BPF_NOEXIST); return 0; } char _license[] SEC("license") = "GPL";