diff options
| author | Roman Gushchin <guro@fb.com> | 2017-11-05 08:15:32 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-11-05 23:26:51 +0900 |
| commit | ebc614f687369f9df99828572b1d85a7c2de3d92 (patch) | |
| tree | bfcaecb3636c2ef3fd31da33138fe72db50663f2 /kernel/bpf/verifier.c | |
| parent | ecf8fecb7828648cba0e42de7464a7e600c93459 (diff) | |
| download | linux-ebc614f687369f9df99828572b1d85a7c2de3d92.tar.bz2 | |
bpf, cgroup: implement eBPF-based device controller for cgroup v2
Cgroup v2 lacks the device controller, provided by cgroup v1.
This patch adds a new eBPF program type, which in combination
of previously added ability to attach multiple eBPF programs
to a cgroup, will provide a similar functionality, but with some
additional flexibility.
This patch introduces a BPF_PROG_TYPE_CGROUP_DEVICE program type.
A program takes major and minor device numbers, device type
(block/character) and access type (mknod/read/write) as parameters
and returns an integer which defines if the operation should be
allowed or terminated with -EPERM.
Signed-off-by: Roman Gushchin <guro@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/bpf/verifier.c')
| -rw-r--r-- | kernel/bpf/verifier.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index add845fe788a..4a942e2e753d 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -3124,6 +3124,7 @@ static int check_return_code(struct bpf_verifier_env *env) case BPF_PROG_TYPE_CGROUP_SKB: case BPF_PROG_TYPE_CGROUP_SOCK: case BPF_PROG_TYPE_SOCK_OPS: + case BPF_PROG_TYPE_CGROUP_DEVICE: break; default: return 0; |