[Lazarus] run program in ide with sudo for debug purpose

[Mark Morgan Lloyd]

Henry Vermaak wrote:
> On 27/02/12 10:07, Mark Morgan Lloyd wrote:

>> I'd be happy to be proven wrong, but my understanding is that you do
>> since there is one specific kernel call (in effect, telling the kernel
>> to release an unrecognised device to an unprivileged program) that won't
>> work otherwise.
> 
> You need root permissions because libusb accesses the file 
> /dev/bus/usb/%d/%d.  The default permissions to these files are 
> restricted to root by default, so udev is used so that known devices can 
> be used by less-privileged users.  E.g. usb printers, which will set the 
> group to "lp" on my system (Debian).  This is what I use at work for 
> development with a Cypress FX2 board:
> 
> hcv at technical09:~$ lsusb
> ...
> Bus 001 Device 003: ID 04b4:8613 Cypress Semiconductor Corp. CY7C68013 
> EZ-USB FX2 USB 2.0 Development Kit
> ...
> 
> hcv at technical09:~$ ls -l /dev/bus/usb/001/
> total 0
> crw-rw-r-- 1 root root    189, 0 Feb 27 09:15 001
> crw-rw-r-- 1 root plugdev 189, 2 Feb 27 10:26 003
> 
> hcv at technical09:~$ cat /etc/udev/rules.d/55-hcv.rules
> ATTRS{idVendor}=="04b4", ATTRS{idProduct}=="8613", MODE="0664", 
> GROUP="plugdev"
> 
> I belong to the "plugdev" group, so I can use the device without running 
> as root.

Thanks for the example.

-- 
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

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