Date: Tue, 22 Nov 2016 22:30:55 +0000 (UTC) From: Jilles Tjoelker <jilles@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r309026 - head/lib/libc/sys Message-ID: <201611222230.uAMMUt0q082760@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: jilles Date: Tue Nov 22 22:30:55 2016 New Revision: 309026 URL: https://svnweb.freebsd.org/changeset/base/309026 Log: 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 Modified: head/lib/libc/sys/open.2 Modified: head/lib/libc/sys/open.2 ============================================================================== --- head/lib/libc/sys/open.2 Tue Nov 22 22:10:58 2016 (r309025) +++ head/lib/libc/sys/open.2 Tue Nov 22 22:30:55 2016 (r309026) @@ -28,7 +28,7 @@ .\" @(#)open.2 8.2 (Berkeley) 11/16/93 .\" $FreeBSD$ .\" -.Dd September 30, 2016 +.Dd November 22, 2016 .Dt OPEN 2 .Os .Sh NAME @@ -503,6 +503,22 @@ 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
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201611222230.uAMMUt0q082760>