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libbpf: make libbpf_strerror_r agnostic to sign of error

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It's often inconvenient to switch sign of error when passing it into
libbpf_strerror_r. It's better for it to handle that automatically.

Signed-off-by: Andrii Nakryiko <[email protected]>
Reviewed-by: Stanislav Fomichev <[email protected]>
Acked-by: Song Liu <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
This commit is contained in:
Andrii Nakryiko 2019-07-01 16:58:55 -07:00 • committed by Daniel Borkmann
commit d66f43666a
1 changed files with 1 additions and 1 deletions
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2
tools/lib/bpf/str_error.c
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@ -11,7 +11,7 @@
*/
char *libbpf_strerror_r(int err, char *dst, int len)
{
int ret = strerror_r(err, dst, len);
int ret = strerror_r(err < 0 ? -err : err, dst, len);
if (ret)
snprintf(dst, len, "ERROR: strerror_r(%d)=%d", err, ret);
return dst;