GNU bug report logs - #33105
cups Can't create temporary file or stopped "Filter failed"

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Package: guix; Reported by: Oleg Pykhalov <go.wigust@HIDDEN>; dated Sat, 20 Oct 2018 18:38:02 UTC; Maintainer for guix is bug-guix@HIDDEN.

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From: ludo@HIDDEN (Ludovic =?utf-8?Q?Court=C3=A8s?=)
To: Oleg Pykhalov <go.wigust@HIDDEN>
Subject: Re: bug#33105: cups Can't create temporary file or stopped "Filter
 failed"
References: <87woqcea7q.fsf@HIDDEN>
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Hi Oleg,

Oleg Pykhalov <go.wigust@HIDDEN> skribis:

> I read gnu/services/cups.scm and found that the /var/spool/cups/
> directory should be owned by =E2=80=98lp=E2=80=99 user:
>
> (define %cups-activation
>   ;; Activation gexp.
>   (with-imported-modules '((guix build utils))
>     #~(begin
>         (use-modules (guix build utils))
>         (define (mkdir-p/perms directory owner perms)
>           (mkdir-p directory)
>           (chown "/var/run/cups" (passwd:uid owner) (passwd:gid owner))
>           ;; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>           (chmod directory perms))
>         ;; =E2=80=A6
>         (let ((user (getpwnam "lp")))
>           ;; =E2=80=A6
>           (mkdir-p/perms "/var/spool/cups/tmp" user #o755) ; <----------
>           ;; =E2=80=A6
>           ))))
>
>
>
> Maybe we should make /var/spool/cups/tmp directory owned by =E2=80=98lp=
=E2=80=99 user,
> too?  WDYT?
>
> Test page was printed successfully with:
>
> $ sudo ls -ld /var/spool/cups/tmp
> drwxr-xr-x 2 lp lp 4096 Oct 20 21:20 /var/spool/cups/tmp

I don=E2=80=99t know the answer :-), but from what you=E2=80=99re saying, i=
t looks like
making /var/spool/cups/tmp =E2=80=98lp=E2=80=99-owned is the right thing.

If it works for you, I guess you can go ahead!

Ludo=E2=80=99.




Information forwarded to bug-guix@HIDDEN:
bug#33105; Package guix. Full text available.

Message received at 33105 <at> debbugs.gnu.org:


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Date: Sun, 21 Oct 2018 09:53:25 +0300
From: Efraim Flashner <efraim@HIDDEN>
To: Oleg Pykhalov <go.wigust@HIDDEN>
Subject: Re: bug#33105: cups Can't create temporary file or stopped "Filter
 failed"
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On Sat, Oct 20, 2018 at 09:36:57PM +0300, Oleg Pykhalov wrote:
> Hello Guix,
>=20
> I've spotted a bug in CUPS service =E2=80=9CCan't create temporary file=
=E2=80=9D.  If I
> gave =E2=80=98765=E2=80=99 permissions to =E2=80=98/var/spool/cups/tmp/=
=E2=80=99 directory then an error
> is =E2=80=9Cstopped "Filter failed"=E2=80=9D.  =E2=80=98777=E2=80=99 for =
/var/spool/cups/tmp/ is
> required to print a test page via CUPS WEB interface.
>=20
>=20
> I read gnu/services/cups.scm and found that the /var/spool/cups/
> directory should be owned by =E2=80=98lp=E2=80=99 user:
> --8<---------------cut here---------------start------------->8---
> (define %cups-activation
>   ;; Activation gexp.
>   (with-imported-modules '((guix build utils))
>     #~(begin
>         (use-modules (guix build utils))
>         (define (mkdir-p/perms directory owner perms)
>           (mkdir-p directory)
>           (chown "/var/run/cups" (passwd:uid owner) (passwd:gid owner))
>           ;; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>           (chmod directory perms))
>         ;; =E2=80=A6
>         (let ((user (getpwnam "lp")))
>           ;; =E2=80=A6
>           (mkdir-p/perms "/var/spool/cups/tmp" user #o755) ; <----------
>           ;; =E2=80=A6
>           ))))
> --8<---------------cut here---------------end--------------->8---
>=20
>=20
> Maybe we should make /var/spool/cups/tmp directory owned by =E2=80=98lp=
=E2=80=99 user,
> too?  WDYT?

currently /var/spool/cups is root:lp, my first thought is to change it
to lp:lpadmin (not sure where I got lpadmin from) and make it 775.

>=20
> Test page was printed successfully with:
> --8<---------------cut here---------------start------------->8---
> $ sudo ls -ld /var/spool/cups/tmp
> drwxr-xr-x 2 lp lp 4096 Oct 20 21:20 /var/spool/cups/tmp
> --8<---------------cut here---------------end--------------->8---
>=20
>=20
> From cups-files.conf(5) man page:
>=20
> TempDir directory
>      Specifies the  directory  where  short-term  temporary  files  are
>      stored.  The default is "/var/spool/cups/tmp".
>=20
> User username
>      Specifies  the  user name or ID that is used when running external
>      programs.  The default is "lp".
>=20
>=20
> Oleg.



--=20
Efraim Flashner   <efraim@HIDDEN>   =D7=90=D7=A4=D7=A8=D7=99=D7=9D =
=D7=A4=D7=9C=D7=A9=D7=A0=D7=A8
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bug#33105; Package guix. Full text available.

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From: Oleg Pykhalov <go.wigust@HIDDEN>
To: bug-guix <bug-guix@HIDDEN>
Subject: cups Can't create temporary file or stopped "Filter failed"
Date: Sat, 20 Oct 2018 21:36:57 +0300
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--=-=-=
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Hello Guix,

I've spotted a bug in CUPS service =E2=80=9CCan't create temporary file=E2=
=80=9D.  If I
gave =E2=80=98765=E2=80=99 permissions to =E2=80=98/var/spool/cups/tmp/=E2=
=80=99 directory then an error
is =E2=80=9Cstopped "Filter failed"=E2=80=9D.  =E2=80=98777=E2=80=99 for /v=
ar/spool/cups/tmp/ is
required to print a test page via CUPS WEB interface.


I read gnu/services/cups.scm and found that the /var/spool/cups/
directory should be owned by =E2=80=98lp=E2=80=99 user:
=2D-8<---------------cut here---------------start------------->8---
(define %cups-activation
  ;; Activation gexp.
  (with-imported-modules '((guix build utils))
    #~(begin
        (use-modules (guix build utils))
        (define (mkdir-p/perms directory owner perms)
          (mkdir-p directory)
          (chown "/var/run/cups" (passwd:uid owner) (passwd:gid owner))
          ;; ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
          (chmod directory perms))
        ;; =E2=80=A6
        (let ((user (getpwnam "lp")))
          ;; =E2=80=A6
          (mkdir-p/perms "/var/spool/cups/tmp" user #o755) ; <----------
          ;; =E2=80=A6
          ))))
=2D-8<---------------cut here---------------end--------------->8---


Maybe we should make /var/spool/cups/tmp directory owned by =E2=80=98lp=E2=
=80=99 user,
too?  WDYT?

Test page was printed successfully with:
=2D-8<---------------cut here---------------start------------->8---
$ sudo ls -ld /var/spool/cups/tmp
drwxr-xr-x 2 lp lp 4096 Oct 20 21:20 /var/spool/cups/tmp
=2D-8<---------------cut here---------------end--------------->8---


From=20cups-files.conf(5) man page:

TempDir directory
     Specifies the  directory  where  short-term  temporary  files  are
     stored.  The default is "/var/spool/cups/tmp".

User username
     Specifies  the  user name or ID that is used when running external
     programs.  The default is "lp".


Oleg.

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Acknowledgement sent to Oleg Pykhalov <go.wigust@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-guix@HIDDEN. Full text available.
Report forwarded to bug-guix@HIDDEN:
bug#33105; Package guix. Full text available.
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Last modified: Mon, 25 Nov 2019 12:00:02 UTC

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Copyright (C) 1999 Darren O. Benham, 1997 nCipher Corporation Ltd, 1994-97 Ian Jackson.