[cups] unable to open file | permission denied

[Evan Cooch]

In looking through system logs, I noticed that the 'errors' I reported 
started after a recent kernel upgrade -- is it possible that a kernel 
upgrade can 'break' CUPS?

Current kernel is 2.6.32




On 5/15/2014 12:35 PM, Evan Cooch wrote:
> A quick search tells me I'm running into a fairly common problem, but 
> said search also shows there is a real paucity of general 
> solutions/fixes.
>
> I'm running CUPS 1.4.2 under RHEL 6.x. Added a printer (Ricoh Aficio) 
> using vendor-supplied PPD.  However, whenever I try to print  a 
> (almost exclusively PDF) file (either as root, or allowed user), the 
> print job gets dumped into /var/spool/cups, and I get an error message 
> of the following type:
>
> /"Unable to open file "/var/spool/cups/d00034-001" - Permission denied"
>
>
> /Permissions on /var/spool/cups are
>
> drwx--x---.  3 root  lp    4096 May 15 11:54 cups
>
>
> If I look in /var/spool/cups, the file (d00034-001) is there, with the 
> same owner (root) and grp (lp)
>
>
> ps -aux | grep cups
>
> shows its running as root.
>
> More tellingly, perhaps (although I don't know what this has to do 
> with 'permissions') is that in /usr/var/cups/error_log, I see the 
> following
>
> Cannot process "<STDIN>": Unknown filetype
>
>
> Taking that as a clue, I tried printing from the command line:
>
>
> lp test.pdf
>
> Error now is
>
> stopped: "Empty print file".
>
>
> At this point, I'm out of options for 'self-help' based on my limited 
> knowledge of CUPS.
>
> Any advice/suggestions/pointers to the obvious appreciated.
>
>
>