Hi -
I'm writing a php script that will result in the parrellel port being
written to. I wrote a program in C that will actually do the writing.
This program has to be run as root so that it can write to the hardware
address. I have the permissions on the file set to u+s so that the
program is always run as root no metter who runs it. If I open a shell
on the machine and login as a regular user I can invoke the program and
pass it the value I want to write to the port and it will work fine. So,
I should be able to invoke it from my php script by doing something
like this:
system("write_port 0xffffffff");
When I call this from the script the port does not get written to.
Anybody have any ideas why that would be?
When I invoke the script from a web server who's context is it running
in?
I'm running PHP 4.2.2 on a Linux Redhat 9 box (kernal 2.4.20-6) and
apache 2.0.
Thanks in advance for any help you can give.
Jim
