File: test_lookup_and_delete.c

package info (click to toggle)
linux 6.1.8-1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,488,076 kB
  • sloc: ansic: 23,401,844; asm: 266,744; sh: 108,976; makefile: 49,705; python: 36,927; perl: 36,810; cpp: 6,044; yacc: 4,904; lex: 2,722; awk: 1,440; ruby: 25; sed: 5
file content (26 lines) | stat: -rw-r--r-- 547 bytes parent folder | download | duplicates (15)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
// 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";