Contributors: 4
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| David Ahern |
186 |
93.94% |
2 |
28.57% |
| Daniel T. Lee |
10 |
5.05% |
3 |
42.86% |
| Toke Höiland-Jörgensen |
1 |
0.51% |
1 |
14.29% |
| Greg Kroah-Hartman |
1 |
0.51% |
1 |
14.29% |
| Total |
198 |
|
7 |
|
// SPDX-License-Identifier: GPL-2.0
#include "vmlinux.h"
#include "net_shared.h"
#include <bpf/bpf_helpers.h>
SEC("cgroup/sock")
int bpf_prog1(struct bpf_sock *sk)
{
char fmt[] = "socket: family %d type %d protocol %d\n";
char fmt2[] = "socket: uid %u gid %u\n";
__u64 gid_uid = bpf_get_current_uid_gid();
__u32 uid = gid_uid & 0xffffffff;
__u32 gid = gid_uid >> 32;
bpf_trace_printk(fmt, sizeof(fmt), sk->family, sk->type, sk->protocol);
bpf_trace_printk(fmt2, sizeof(fmt2), uid, gid);
/* block AF_INET6, SOCK_DGRAM, IPPROTO_ICMPV6 sockets
* ie., make ping6 fail
*/
if (sk->family == AF_INET6 &&
sk->type == SOCK_DGRAM &&
sk->protocol == IPPROTO_ICMPV6)
return 0;
return 1;
}
SEC("cgroup/sock")
int bpf_prog2(struct bpf_sock *sk)
{
char fmt[] = "socket: family %d type %d protocol %d\n";
bpf_trace_printk(fmt, sizeof(fmt), sk->family, sk->type, sk->protocol);
/* block AF_INET, SOCK_DGRAM, IPPROTO_ICMP sockets
* ie., make ping fail
*/
if (sk->family == AF_INET &&
sk->type == SOCK_DGRAM &&
sk->protocol == IPPROTO_ICMP)
return 0;
return 1;
}
char _license[] SEC("license") = "GPL";