bpf: Move unprivileged checks into map_create() and bpf_prog_load()

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[ Upstream commit 1d28635abc ]

Make each bpf() syscall command a bit more self-contained, making it
easier to further enhance it. We move sysctl_unprivileged_bpf_disabled
handling down to map_create() and bpf_prog_load(), two special commands
in this regard.

Also swap the order of checks, calling bpf_capable() only if
sysctl_unprivileged_bpf_disabled is true, avoiding unnecessary audit
messages.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/bpf/20230613223533.3689589-2-andrii@kernel.org
Stable-dep-of: 640a604585 ("bpf, cpumap: Make sure kthread is running before map update returns")
Signed-off-by: Sasha Levin <sashal@kernel.org>

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This commit is contained in:

Andrii Nakryiko 2023-06-13 15:35:30 -07:00 • committed by Greg Kroah-Hartman

parent 0acc483f9b

commit 3cf214f275

1 changed files with 19 additions and 15 deletions

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kernel/bpf/syscall.c

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