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Subject: Re: [Qemu-devel] Starting QEMU by PHP/Apache
From: "=?utf-8?q?Fran=C3=A7ois?= Revol" <revol@free.fr>
Date: Tue, 13 Oct 2009 15:12:14 +0200 CEST
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To: qemu-devel@nongnu.org

Hi,

> Did anybody had success to start a QEMU instance by a PHP 
> script under the Apache web server =3F

see
http://dev.haiku-os.org/browser/haiku/trunk/3rdparty/mmu=5Fman/onlinedemo/haiku.php

> 
> I allow the Apache user with the help of sudoers to start 
> the QEMU binary as root. I've hacked the "qemu-socket.c" 
> to set the access mode to allow communication for the 
> monitor socket (only add "chmod(path, <needed file mode 
> bits>)").

Though I never neeeded to start it as root. It's probably a bad idea 
anyway.

You might also ask the Free Live OS Zoo team, though I think they use 
perl:
http://www.oszoo.org/wiki/index.php/Free=5FLive=5FOS=5FZoo

> 
> I'm able to successfully start the QEMU instance from a 
> PHP CLI script as the user under which Apache is running 
> like "sudo -u <Apache user> sudo <qemu + args>". But when 
> I run the same script by the web server, QEMU starts up to 
> the BIOS, telling me to press F12 for a start device. The 
> "info cpus" tells "CPU #0: pc=3D0x000f08b5 (halted)".
> 
> The full command executed by PHP is:
> /usr/bin/sudo /usr/bin/qemu -L /usr/share/qemu -M isapc -m 
> 16 -hda </path/and/name/to/image> -net none -serial none 
> -parallel none -vnc :0,password -monitor 
> unix:</path/and/name/to/socket>,server,nowait -name "QEMU 
> TEST" -pidfile </path/and/name/to/pid> -chroot 
> </path/to/image> -runas <service user> > /dev/null &
> 
> Any idea about where to look for more information =3F

You might want to use a wrapper script instead...

Fran=C3=A7ois.