X-Recipient: archive-cygwin@delorie.com X-SWARE-Spam-Status: No, hits=-6.9 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_HI,SPF_HELO_PASS,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Message-ID: <4BD74C9E.8040100@redhat.com> Date: Tue, 27 Apr 2010 14:44:14 -0600 From: Eric Blake User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.9) Gecko/20100330 Fedora/3.0.4-1.fc12 Lightning/1.0b1 Thunderbird/3.0.4 MIME-Version: 1.0 To: cygwin Subject: exec*() bug Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="------------enig152E4D6B85D6FA421BDB3D30" X-IsSubscribed: yes Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com --------------enig152E4D6B85D6FA421BDB3D30 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On Linux, 'env ./.' triggers an exec() that fails with EACCES, and exits with status 126 (file was located, but cannot be executed). But on Cygwin, the exec() fails with ENOENT, and env exits with status 127 (file could not be located). This is particularly insidious, because some programs depend on knowing the difference between the two types of exec() errors (not present, vs. not executable). For example, one test of the findutils testsuite fails, because 'echo | xargs /' gives the wrong status. --=20 Eric Blake eblake@redhat.com +1-801-349-2682 Libvirt virtualization library http://libvirt.org --------------enig152E4D6B85D6FA421BDB3D30 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Public key at http://people.redhat.com/eblake/eblake.gpg Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org/ iQEcBAEBCAAGBQJL10yeAAoJEKeha0olJ0Nq//UIAIoD0p7Bc04jrdhkqL6Jgfl/ lIqF4pIzZNuGy46R+JBxVIpBXKC+MsXUgZYEXklE3msZ1nd2HJNSSEft42SxsGnP fzIiTkPaZiuMkA7aPtGAIMuWF0X9nMyfkZNJWlYVXk25t12hCGiU/oJrL2yLVdC6 kE/+N4oSx3ptDN4G0FATmGNpuks5KSg80fDo6PYbqns4NyTib8pOpFy8LitEo0+e q1zn//Zs+1gR+287vaQkK4ecNph9tIduAVrvJEO8vxZnX8YdCVUJOYxDHd/gRtgw rj2UbwRC1C1bSsAci5ES3GnSvWzfHMEr8VMj7m752Dzyi1zVddErfrH5/i/QDRA= =3cgX -----END PGP SIGNATURE----- --------------enig152E4D6B85D6FA421BDB3D30--