libbpf: preserve errno before calling into user callback

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pr_warning ultimately may call into user-provided callback function,
which can clobber errno value, so we need to save it before that.

Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Andrii Nakryiko 2019-05-29 10:36:04 -07:00 • committed by Daniel Borkmann

parent 8ca990ce0d

commit be5c5d4e9d

1 changed files with 4 additions and 4 deletions

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tools/lib/bpf/libbpf.c

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