Christoph Pleger wrote: > I have edited the source code of cups a little to get a some more > more detailed information about the problem (the actual code > only gives a meaningless message “The print file cannot be opened: > Permission denied") and then found out the following:
Enabling the CUPS error log should be good enough, instead of modifying the source code. A howto for enabling it, can be found here: https://wiki.debian.org/CUPSDebugging > The “print file” is a temporary file in /tmp, has the UID 0 and > the GID 7 (belongs to the system user lp) and the access rights 600, so > it can only be written or read by root. The process that > tries to access the file has the somewhat strange name > ipp://$RemoteHost:$RemotePort/printers/$Printer . IPP is the daemon, which receives the print jobs. I think this is fine. > Does anyone have an idea why the strangely named process runs with root > rights on one machine, but not on the other? As said, follow this page for debugging CUPS: https://wiki.debian.org/CUPSDebugging Best regards, Klaus. -- Klaus Singvogel GnuPG-Key-ID: 1024R/5068792D 1994-06-27
