libbpf: Sanitize BPF program code for bpf_probe_read_{kernel, user}[_str]

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Add BPF program code sanitization pass, replacing calls to BPF
bpf_probe_read_{kernel,user}[_str]() helpers with bpf_probe_read[_str](), if
libbpf detects that kernel doesn't support new variants.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200818213356.2629020-5-andriin@fb.com

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Andrii Nakryiko 2020-08-18 14:33:53 -07:00 • committed by Alexei Starovoitov

parent bb180fb240

commit 109cea5a59

1 changed files with 80 additions and 0 deletions

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tools/lib/bpf/libbpf.c

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