bpf: Determine buf_info inside check_buffer_access()

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Instead of determining buf_info string in the caller of check_buffer_access(),
we can determine whether the register type is read-only through
type_is_rdonly_mem() helper inside check_buffer_access() and construct
buf_info, making the code slightly cleaner.

Signed-off-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/YiWYLnAkEZXBP/gH@syu-laptop

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Shung-Hsi Yu 2022-03-07 13:29:18 +08:00 • committed by Daniel Borkmann

parent e878ae2d1d

commit 44e9a741ca

1 changed files with 3 additions and 9 deletions

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kernel/bpf/verifier.c

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