Le 19/10/2015 16:38, Thaddeus Nielsen a écrit :
> On Mon, 19 Oct 2015 16:05:37 +0200
> Didier Kryn <kryn@???> wrote:
>
>> Le 19/10/2015 15:24, Hendrik Boom a écrit :
>>> On Mon, Oct 05, 2015 at 05:13:40PM -0400, Hendrik Boom wrote:
>>>> On Mon, Oct 05, 2015 at 09:47:02PM +0200, Riccardo Boninsegna wrote:
>>>>> On Mon, Oct 5, 2015 at 9:12 PM, Hendrik Boom <hendrik@???> wrote:
>>>>>> I installed lpr, and it did take a lot of cups off. Do I really need cups?
>>>>> Nope, especially with a Brother that's very LPR-friendly!
>>>>> As you found out, cups-bsd is just a port of LPR programs to CUPS.
>>>>>
>>>>>> But I still don't know how to specify my network printer.
>>>>> I'm not familiar at all with LPR, but I know a printcap entry for the
>>>>> printer is created (if it's currently connected via USB) by the
>>>>> driver's postinst somewhere under /opt/Brother; according to the
>>>>> printcap manpage, you'd have to edit the "lp" option -- the
>>>>> description says "local printer device, or port@host for remote"!
>>>> Presumeably that would be port 515 at whatever the IP number for the
>>>> printer is. Will try that wen I'm home near the priniter again.
>>>>
>>>> And what's there in the way of termcap is a shell script
>>>> /opt/brother/Printers/hl3170cdw/inf/setupPrintcapij that creates a
>>>> termcap. I hope it will get executed at the right time. At bootup,
>>>> perhaps?
>>>>
>>>> I'll see when I'm home again.
>>> Hand-edited /etc/termcap:
>>> root@notlookedfor:/home/hendrik# cat /etc/printcap
>>> HL3170CDW:\
>>> :mx=0:\
>>> :sd=/var/spool/lpd/hl3170cdw:\
>>> :sh:\
>>> :lp=515@172.25.1.122:\
>>> :if=/opt/brother/Printers/hl3170cdw/lpd/filterhl3170cdw:
>>> root@notlookedfor:/home/hendrik#
>>>
>>> Now I get
>>>
>>> hendrik@notlookedfor:~$ lpr -h -PHL3170CDW Documents/math/Librationism=1407.3877v3.ps
>>> lpr: cannot open /var/spool/lpd/hl3170cdw/.seq: Permission denied
>>> hendrik@notlookedfor:~$
>>>
>>> This happens even if I run as root:
>>>
>>> root@notlookedfor:/home/hendrik# lpr -h -PHL3170CDW Documents/math/Librationism=1407.3877v3.ps
>>> lpr: cannot open /var/spool/lpd/hl3170cdw/.seq: Permission denied
>>> root@notlookedfor:/home/hendrik#
>>>
>>> That directory is owned by the lp daemon:
>>>
>>> oot@notlookedfor:/home/hendrik# ls -al /var/spool/lpd/hl3170cdwtotal 8
>>> drwx------ 2 daemon lp 4096 Oct 5 14:40 .
>>> drwxr-xr-x 5 root root 4096 Oct 19 09:02 ..
>>> -rw------- 1 daemon lp 0 Oct 5 14:32 acct
>>> -rw------- 1 daemon lp 0 Oct 5 14:32 log
>>> -rw------- 1 daemon lp 0 Oct 5 14:32 status
>>> -rw------- 1 daemon lp 0 Oct 5 14:32 status.pr
>>> root@notlookedfor:/home/hendrik#
>>>
>>> and it contains no .seq file. Preumably that fle would be created as needed.
>>> And presumably the permissions are checked in some way that can exclude root.
>>>
>>>
>> Hi Hendrik.
>>
>> I can see one reason for root to be unable to get the permission:
>> lpr being owned by another user than root and being suid; this is fine
>> at the condidiont that this owner is 'daemon', given the owner and
>> permissions of /var/spool/lpd.
>>
>> Didier
>>
> Another thing to examine: lp is the group on the directory but that directory had no write permission for the group, if I recall correctly.
>
> RPTN
>
Since group has no permission and owner has all, only the owner
should matter. But the group s bit, AFAIR is something which disallows
overwriting a file owned by someone else. Maybe try to make daemon the
owner of /usr/bin/lpr, just to see what happens
Didier
::
Re: [DNG] Printing -- now a permiss…
