1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2020 Tessares SA <http://www.tessares.net> */
5 #include <bpf/bpf_helpers.h>
12 __uint(type, BPF_MAP_TYPE_PERCPU_HASH);
13 __uint(max_entries, 2);
16 } hashmap1 SEC(".maps");
19 SEC("tp/syscalls/sys_enter_getpgid")
20 int sysenter_getpgid(const void *ctx)
22 /* Just do it for once, when called from our own test prog. This
23 * ensures the map value is only updated for a single CPU.
25 int cur_pid = bpf_get_current_pid_tgid() >> 32;
28 bpf_map_update_elem(&hashmap1, &inKey, &inValue, BPF_NOEXIST);
33 char _license[] SEC("license") = "GPL";