bpf: program: Refuse non-O_RDWR flags in BPF_OBJ_GET
As for bpf_link, refuse creating a non-O_RDWR fd. Since program fds currently don't allow modifications this is a precaution, not a straight up bug fix. Signed-off-by:Lorenz Bauer <lmb@cloudflare.com> Signed-off-by:
Alexei Starovoitov <ast@kernel.org> Acked-by:
Andrii Nakryiko <andrii@kernel.org> Acked-by:
Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20210326160501.46234-2-lmb@cloudflare.com
parent
25fc94b2
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