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| author | David Ahern <dsahern@gmail.com> | 2017-09-01 01:05:50 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-09-01 08:05:15 +0300 |
| commit | 0adc3dd90050538ac543c6c0bea8e8527a9e2e2c (patch) | |
| tree | 0455bd99d3cc18191b603ef13342b1b4386e38e3 /samples/bpf/sock_flags_kern.c | |
| parent | 33aeb5e30acac9ae68cb5acc4eecc1fca4358859 (diff) | |
| download | linux-0adc3dd90050538ac543c6c0bea8e8527a9e2e2c.tar.xz | |
samples/bpf: Update cgroup socket examples to use uid gid helper
Signed-off-by: David Ahern <dsahern@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'samples/bpf/sock_flags_kern.c')
| -rw-r--r-- | samples/bpf/sock_flags_kern.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/samples/bpf/sock_flags_kern.c b/samples/bpf/sock_flags_kern.c index 533dd11a6baa..05dcdf8a4baa 100644 --- a/samples/bpf/sock_flags_kern.c +++ b/samples/bpf/sock_flags_kern.c @@ -9,8 +9,13 @@ SEC("cgroup/sock1") 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 PF_INET6, SOCK_RAW, IPPROTO_ICMPV6 sockets * ie., make ping6 fail |