On Mon, Oct 19, 2015 at 07:04:20PM +0100, Rainer Weikusat wrote:
> Hendrik Boom <hendrik@???> writes:
> > On Mon, Oct 19, 2015 at 05:47:57PM +0100, Rainer Weikusat wrote:
>
> [...]
>
>
> > root@notlookedfor:/home/hendrik# strace -f /usr/bin/lpr -h -PHL3170CDW
> > Documents/math/Librationism=1407.3877v3.ps
> > execve("/usr/bin/lpr", ["/usr/bin/lpr", "-h", "-PHL3170CDW",
> > "Documents/math/Librationism=1407"...], [/* 37 vars */]) = 0
>
> [...]
>
> > open("/etc/passwd", O_RDONLY|O_CLOEXEC) = 3
> > _llseek(3, 0, [0], SEEK_CUR) = 0
> > fstat64(3, {st_mode=S_IFREG|0644, st_size=2252, ...}) = 0
> > mmap2(NULL, 2252, PROT_READ, MAP_SHARED, 3, 0) = 0xb77ad000
> > _llseek(3, 2252, [2252], SEEK_SET) = 0
> > munmap(0xb77ad000, 2252) = 0
> > close(3) = 0
> > getuid32() = 0
> > getgid32() = 0
> > setresgid32(0, 0, 7) = 0
> > setresuid32(0, 0, 7) = 0
>
> [...]
>
> > open("/etc/passwd", O_RDONLY|O_CLOEXEC) = 3
> > _llseek(3, 0, [0], SEEK_CUR) = 0
> > fstat64(3, {st_mode=S_IFREG|0644, st_size=2252, ...}) = 0
> > mmap2(NULL, 2252, PROT_READ, MAP_SHARED, 3, 0) = 0xb77ad000
> > _llseek(3, 2252, [2252], SEEK_SET) = 0
> > munmap(0xb77ad000, 2252) = 0
> > close(3) = 0
> > setresuid32(-1, 7, -1) = 0
> > setresgid32(-1, 7, -1) = 0
> > open("/var/spool/lpd/hl3170cdw/.seq",
> > O_RDWR|O_CREAT|O_NONBLOCK|O_NOFOLLOW, 0661) = -1 EACCES (Permission
> > denied)
> > write(2, "lpr: ", 5lpr: ) = 5
> > write(2, "cannot open /var/spool/lpd/hl317"..., 41cannot open
> > /var/spool/lpd/hl3170cdw/.seq) = 41
> > write(2, ": ", 2: ) = 2
> > write(2, "Permission denied\n", 18Permission denied
> > ) = 18
> > exit_group(1) = ?
> > +++ exited with 1 +++
>
> You're running the BSD lpr which spools the files by itself and tries to
> do as user 'lp' and not 'daemon' (UID 7). Judging from the code, it's
> supposed to be installed setuid-0 and it then changes its UID to lp/ 7
> to avoid having the binary owned by 'lp'. Since your spool directory
> is only writable by user 'daemon' (UID 1), the attempt to spool the job
> then fails.
>
> Adjusting the permission accordingly, ie, make lpr owned by root and
> setuid 0 and the spool directory owned and writable by lp may work. Or
> possibly not as the Brother drivers are (AFAIK) intended to be used with
> lprng and not the BSD lpr. In this case, you could try switching to
> lprng.
Did that. Now I'm noo longer getting the permissions error.
But the job isn't getting to the printer either, and there seems to be
problem finding it in the queue.
root@notlookedfor:/home/hendrik# /usr/bin/lpr -h -PHL3170CDW Documents/math/Librationism=1407.3877v3.ps
root@notlookedfor:/home/hendrik# lpq
Printer: HL3170CDW@notlookedfor (dest 515@172.25.1.122)
Queue: no printable jobs in queue
Server: no server active
Status: job 'root@notlookedfor+929' saved at 14:32:41.255
Rank Owner/ID Pr/Class Job Files Size Time
error root@notlookedfor+929 A 929 ERROR: Mystery error from Send_job
Printer Name: 515
Jobs: No Jobs in Queue
root@notlookedfor:/home/hendrik#
Is Send_job the thing that sends the job to the queue or to the
printer?
-- hendrik
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Re: [DNG] Printing -- now a permiss…
