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(parent: 32b7454) | patch
libbpf: preserve errno before calling into user callback
authorAndrii Nakryiko <andriin@fb.com>
Wed, 29 May 2019 17:36:04 +0000 (10:36 -0700)
committerDaniel Borkmann <daniel@iogearbox.net>
Wed, 29 May 2019 23:23:34 +0000 (01:23 +0200)
commit822266e6d8ece03a6e5d4874c42a612ac4dc114f
tree792ac7428a29e496e2ce8f5622e81570fa89872dtree | snapshot
parent32b7454a53476873cc2f30ca7dcb0cb4f1060593commit | diff
libbpf: preserve errno before calling into user callback

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>
tools/lib/bpf/libbpf.c diff | blob | history
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