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authorRoman Gushchin <guro@fb.com>2017-11-05 08:15:32 -0500
committerDavid S. Miller <davem@davemloft.net>2017-11-05 23:26:51 +0900
commitebc614f687369f9df99828572b1d85a7c2de3d92 (patch)
treebfcaecb3636c2ef3fd31da33138fe72db50663f2 /kernel/kcov.c
parentecf8fecb7828648cba0e42de7464a7e600c93459 (diff)
downloadlinux-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/kcov.c')
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