Date: Sun, 4 Dec 2016 16:00:25 +0000 (UTC) From: Jilles Tjoelker <jilles@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r309536 - stable/10/lib/libc/sys Message-ID: <201612041600.uB4G0P3u076382@repo.freebsd.org>
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Author: jilles Date: Sun Dec 4 16:00:25 2016 New Revision: 309536 URL: https://svnweb.freebsd.org/changeset/base/309536 Log: MFC r309026: 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 Modified: stable/10/lib/libc/sys/open.2 Directory Properties: stable/10/ (props changed) Modified: stable/10/lib/libc/sys/open.2 ============================================================================== --- stable/10/lib/libc/sys/open.2 Sun Dec 4 15:59:04 2016 (r309535) +++ stable/10/lib/libc/sys/open.2 Sun Dec 4 16:00:25 2016 (r309536) @@ -28,7 +28,7 @@ .\" @(#)open.2 8.2 (Berkeley) 11/16/93 .\" $FreeBSD$ .\" -.Dd April 2, 2015 +.Dd November 22, 2016 .Dt OPEN 2 .Os .Sh NAME @@ -471,6 +471,22 @@ The .Fn openat function was introduced in .Fx 8.0 . +.Sh STANDARDS +These functions are specified by +.St -p1003.1-2008 . +.Fx +sets +.Va errno +to +.Er EMLINK instead of +.Er ELOOP +as specified by +.Tn POSIX +when +.Dv O_NOFOLLOW +is set in flags and the final component of pathname is a symbolic link +to distinguish it from the case of too many symbolic link traversals +in one of its non-final components. .Sh BUGS The Open Group Extended API Set 2 specification requires that the test for whether
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