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Bug #49458 passthru is unable to fork
Submitted: 2009-09-03 14:46 UTC Modified: 2010-02-17 14:15 UTC
From: RQuadling at GMail dot com Assigned: pajoye (profile)
Status: Not a bug Package: Filesystem function related
PHP Version: 5.3SVN-2009-09-03 (SVN) OS: Windows XP SP3
Private report: No CVE-ID: None
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From: RQuadling at GMail dot com
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 [2009-09-03 14:46 UTC] RQuadling at GMail dot com 
Description:
------------
Unable to fork. As a consequence, phpdoc/configure.php fails on windows 
as it is unable to call external scripts.

Run the command below at the command prompt.

This works on PHP 5.3.0 (cli) (built: Jun 29 2009 21:44:56)



Reproduce code:
---------------
php -n -r "echo passthru('php.exe -v');"

Expected result:
----------------
PHP 5.3.1-dev (cli) (built: Sep  3 2009 09:58:01)
Copyright (c) 1997-2009 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2009 Zend Technologies

Actual result:
--------------
Warning: passthru(): Unable to fork [php.exe -v] in Command line code on 
line 1

Patches

Pull Requests

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2009-09-03 14:54 UTC] pajoye@php.net 
Which version do you use? It works here using vc9/x86
 [2009-09-03 15:31 UTC] RQuadling at GMail dot com 
[2009/09/03 16:18:38] [D:\Personal 
Files\Downloads\Software\Programming\PHP\Latest Snapshots\php-5.3-nts-
win32-VC6-x86-latest] [] >php -n -v
PHP 5.3.1-dev (cli) (built: Sep  3 2009 10:16:30)
Copyright (c) 1997-2009 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2009 Zend Technologies

[2009/09/03 16:18:40] [D:\Personal 
Files\Downloads\Software\Programming\PHP\Latest Snapshots\php-5.3-nts-
win32-VC6-x86-latest] [] >php -n -r "echo passthru('php.exe -n -v');"

Warning: passthru(): Unable to fork [php.exe -v] in Command line code 
on line 1

[2009/09/03 16:18:48] [D:\Personal 
Files\Downloads\Software\Programming\PHP\Latest Snapshots\php-5.3-nts-
win32-VC6-x86-latest] [] >


Basically, all the latest snapshots from windows.php.net are failing 
for me.

All the official releases are working for me.

Checking historical versions ...

PHP 5.3.1-dev (cli) (built: Aug 27 2009 23:21:09) Works
PHP 5.3.1-dev (cli) (built: Aug 28 2009 00:20:34) Works
PHP 5.3.1-dev (cli) (built: Aug 28 2009 01:20:31) Works

I'll get the historical updates and let you know when the failure 
started.

Have you got any uncommitted code?
 [2009-09-03 15:32 UTC] RQuadling at GoogleMail dot com 
[2009/09/03 16:18:38] [D:\Personal 
Files\Downloads\Software\Programming\PHP\Latest Snapshots\php-5.3-nts-
win32-VC6-x86-latest] [] >php -n -v
PHP 5.3.1-dev (cli) (built: Sep  3 2009 10:16:30)
Copyright (c) 1997-2009 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2009 Zend Technologies

[2009/09/03 16:18:40] [D:\Personal 
Files\Downloads\Software\Programming\PHP\Latest Snapshots\php-5.3-nts-
win32-VC6-x86-latest] [] >php -n -r "echo passthru('php.exe -n -v');"

Warning: passthru(): Unable to fork [php.exe -v] in Command line code 
on line 1

[2009/09/03 16:18:48] [D:\Personal 
Files\Downloads\Software\Programming\PHP\Latest Snapshots\php-5.3-nts-
win32-VC6-x86-latest] [] >


Basically, all the latest snapshots from windows.php.net are failing 
for me.

All the official releases are working for me.

Checking historical versions ...

PHP 5.3.1-dev (cli) (built: Aug 27 2009 23:21:09) Works
PHP 5.3.1-dev (cli) (built: Aug 28 2009 00:20:34) Works
PHP 5.3.1-dev (cli) (built: Aug 28 2009 01:20:31) Works

I'll get the historical updates and let you know when the failure 
started.

Have you got any uncommitted code?
 [2009-09-03 15:34 UTC] pajoye@php.net 
It works on 2008/Vista/Win7 but fails on XP or 2k3. It seems that CreateProcessAsUser is more restrictive in these versions than in newer releass forcing us to check for ERROR_NO_TOKEN.

If the current thread is not impersonated, it has no token assigned.

Can you try this patch please? http://pastie.org/604529
 [2009-09-03 17:27 UTC] raulsalitrero at gmail dot com 
i have just tested the patch and it seems to work, the output i get is:
on windows xp sp3 (all patches)


C:\php>php -n -r "echo passthru('php.exe -n -v');"
PHP 5.3.1-dev (cli) (built: Sep  3 2009 10:04:34)
Copyright (c) 1997-2009 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2009 Zend Technologies

before the patch, it fails just like the report using svn version up to date.
 [2009-09-03 19:18 UTC] pajoye@php.net 
As this bug is the result of the 1st fix for #27051, I like to continue to follow it there instead, less confusion.

A commit has been done using the patch pasted here in my previous comment, using #27051 as reference.

Mark as bogus/duplicate.
 [2009-09-03 19:18 UTC] pajoye@php.net 
As this bug is the result of the 1st fix for #27051, I like to continue to follow it there instead, less confusion.

A commit has been done using the patch pasted here in my previous comment, using #27051 as reference.

Mark as bogus/duplicate.
 [2010-02-17 14:15 UTC] pajoye@php.net 
Quick note here. It is necessary to give a given IUSR_* the permission to use cmd.exe (%COMSPEC%). It is recommended not to do it as it may introduce security issues, obviously. But if you really want to do it, use:

cacls %COMSPEC% /E /G IUSR_xxxx:R
 
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