bpf: Enable bpf_{g,s}etsockopt in BPF_CGROUP_UDP{4,6}_RECVMSG

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Those hooks run as BPF_CGROUP_RUN_SA_PROG_LOCK and operate on a locked socket.

Note that we could remove the switch for prog->expected_attach_type altogether
since all current sock_addr attach types are covered. However, it makes sense
to keep it as a safe-guard in case new sock_addr attach types are added that
might not operate on a locked socket. Therefore, avoid to let this slip through.

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210127232853.3753823-5-sdf@google.com

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Stanislav Fomichev 2021-01-27 15:28:53 -08:00 • committed by Daniel Borkmann

parent 3574906016

commit 4c3384d7ab

3 changed files with 14 additions and 0 deletions

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4

net/core/filter.c

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5

tools/testing/selftests/bpf/progs/recvmsg4_prog.c

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5

tools/testing/selftests/bpf/progs/recvmsg6_prog.c

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