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Message-ID: <3BCFFB48.1E2B85F7@syntrex.com>
Date: Fri, 19 Oct 2001 12:07:04 +0200
From: Pavel Tsekov <ptsekov AT syntrex DOT com>
Organization: Syntrex Inc.
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To: cygwin AT cygwin DOT com
Subject: Re: simple execvp test
References: <3BCECA31 DOT 4FE7AAD2 AT syntrex DOT com> <20011018171144 DOT B19399 AT redhat DOT com> <3BCFF639 DOT B4F5CF47 AT syntrex DOT com>
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Pavel Tsekov wrote:
> 
> I'm looking at the spawn_guts code to see if
> there is something in this setup which may
> broke execvp.
> 

Btw I found something which may broke spawn_guts,
though I dont think this is the case with
James - see below:

This code is from spawn_guts - the interesting thing
about it is that it doesn set the errno (__seterrno())
if the DuplicateHandle doesnt succeed. All the other
Win32 apis which a called though the spawn_guts set
the errno if they fail.

So if we have execvp which loops through the PATH while
it finds the executable thus executing spawn_guts many
times most of which it fails with ENOENT and if spawn_guts
fail to duplicate handle the errno will still be set to
ENOENT which is not correct, maybe :)

  if (!DuplicateHandle (hMainProc, hMainProc, hMainProc,
&ciresrv.parent, 0, 1,
                        DUPLICATE_SAME_ACCESS))
     {
       system_printf ("couldn't create handle to myself for child, %E");
       return -1;
     }

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