jilles 56c196dc25 open(2): Clarify non-POSIX error when opening a symlink with O_NOFOLLOW.
We return [EMLINK] instead of [ELOOP] when trying to open a symlink with
O_NOFOLLOW, so that the original case of [ELOOP] can be distinguished. Code
like cmp -h and xz takes advantage of this.

PR:		214633
Reviewed by:	kib, imp
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D8586
2016-11-22 22:30:55 +00:00
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