standards/171577: realpath(3) returns ENOTDIR instead of ENOENT

[Eitan Adler]

The following reply was made to PR standards/171577; it has been noted by GNATS.

From: Eitan Adler <lists at eitanadler.com>
To: Andrey Chernov <ache at freebsd.org>
Cc: FreeBSD Standards <freebsd-standards at freebsd.org>, bug-followup at freebsd.org
Subject: Re: standards/171577: realpath(3) returns ENOTDIR instead of ENOENT
Date: Wed, 12 Sep 2012 13:07:44 -0400

 On 12 September 2012 13:00, Andrey Chernov <ache at freebsd.org> wrote:
 > The following reply was made to PR standards/171577; it has been noted by GNATS.
 >
 > From: Andrey Chernov <ache at FreeBSD.ORG>
 > To: Ed Maste <emaste at FreeBSD.ORG>
 > Cc: FreeBSD-gnats-submit at FreeBSD.ORG
 > Subject: Re: standards/171577: realpath(3) returns ENOTDIR instead of ENOENT
 > Date: Wed, 12 Sep 2012 20:56:07 +0400
 >
 >  On Wed, Sep 12, 2012 at 03:54:43PM +0000, Ed Maste wrote:
 >  > When passed a path with a component that does not exist realpath() sets
 >  > errno to ENOTDIR instead of ENOENT.  See kern/128933 for the change that
 >  > introduced this behaviour.  I believe it is incorrect.
 >  >
 >  > ENOTDIR is
 >  >
 >  >      20 ENOTDIR Not a directory.  A component of the specified pathname
 >  >              existed, but it was not a directory, when a directory was
 >  >              expected.
 >  >
 >  > >How-To-Repeat:
 >  >
 >  > feynman% realpath /does-not-exist/foo
 >  > realpath: /does-not-exist/foo: Not a directory
 >
 >  It works as designed. See POSIX realpath ERRORS section
 >  http://pubs.opengroup.org/onlinepubs/9699919799/functions/realpath.html
 
 ENOTDIR implies the path exists:
 
 [ENOTDIR]
 Not a directory. A component of the specified pathname exists, but it
 is not a directory, when a directory was expected.
 
 from section 2.3: Error Numbers
 http://pubs.opengroup.org/onlinepubs/009695399/functions/xsh_chap02_03.html
 
 -- 
 Eitan Adler