GNU bug report logs - #29219
CUPS filter still can't access Ghostscript (gs)

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Package: guix; Reported by: Mekeor Melire <mekeor.melire@HIDDEN>; dated Wed, 8 Nov 2017 20:52:02 UTC; Maintainer for guix is bug-guix@HIDDEN.

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From: ludo@HIDDEN (Ludovic =?utf-8?Q?Court=C3=A8s?=)
To: Mekeor Melire <mekeor.melire@HIDDEN>
Subject: Re: bug#29219: CUPS filter still can't access Ghostscript (gs)
References: <87efp8fqab.fsf@HIDDEN> <87r2t7q0t5.fsf@HIDDEN>
 <87a7zvfefe.fsf@HIDDEN>
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In-Reply-To: <87a7zvfefe.fsf@HIDDEN> (Mekeor Melire's message of "Thu, 09
 Nov 2017 20:19:17 +0100")
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Hi Mekeor,

Mekeor Melire <mekeor.melire@HIDDEN> skribis:

> Ludovic Court=C3=A8s <ludo@HIDDEN> writes:
>
>> Mekeor Melire <mekeor.melire@HIDDEN> skribis:
>
>>> But although I was expecting commit
>>> 1728c411718e3b358c06561d6e80b47d7b331617=C2=B9 to fix this issue, when =
I try
>>> the ljet4=C2=B2 driver, I still get this error in /var/log/cups/error_l=
og=C2=B3:
>
>>>     sh: gs: command not found
>>>     Process is dying with \"Unable to determine number of pages, page c=
ount: -1
>>>     \", exit stat 3
>
>> Just make sure to reconfigure from a recent-enough commit (run =E2=80=98=
guix
>> --version=E2=80=99 as root to see which commit you=E2=80=99re using.)
>
> Done. I'm running a recent-enough commit. (Namely
> 46dea1241c801af5aa65e0c7b4e84bb0aff11273.)
>
>> If it turns out you=E2=80=99re already using CUPS with commit
>> 1728c411718e3b358c06561d6e80b47d7b331617, could you reproduce the issue
>> while running =E2=80=9Cstrace -p PID -f -s 345 -o log=E2=80=9D, where PI=
D is the PID of
>> cupsd as shown by =E2=80=98herd status cups=E2=80=99?
>
> You can find the log here: <http://sprunge.us/UDOY>. These might be the
> interesting lines:
>
>     $ grep -E '[^a-zA-Z0-9]gs' log
>     31377 execve("/gnu/store/=E2=80=A6-bash-static-4.4.12/bin/sh", ["sh",=
 "-c", "gs -dNODISPLAY -q -c '/pdffile (/var/spool/cups/tmp/foomatic-4ngnEr=
) (r) file def pdfdict begin pdffile pdfopen begin (PageCount: ) print pdfp=
agecount =3D=3D flush currentdict pdfclose end end quit'"], 0x149e810 /* 33=
 vars */ <unfinished ...>
>     31377 stat("/gnu/store/=E2=80=A6-cups-server-bin/lib/cups/filter/gs",=
 0x7ffd7921b5c0) =3D -1 ENOENT (No such file or directory)
>     31377 stat("/gnu/store/=E2=80=A6-cups-2.2.4/bin/gs", 0x7ffd7921b5c0) =
=3D -1 ENOENT (No such file or directory)
>     31377 stat("/gnu/store/=E2=80=A6-cups-2.2.4/sbin/gs", 0x7ffd7921b5c0)=
 =3D -1 ENOENT (No such file or directory)
>     31377 stat("/bin/gs", 0x7ffd7921b5c0)   =3D -1 ENOENT (No such file o=
r directory)
>     31377 stat("/usr/bin/gs", 0x7ffd7921b5c0) =3D -1 ENOENT (No such file=
 or directory)
>     31377 write(2, "sh: gs: command not found\n", 26) =3D 26
>     15154 <... read resumed> "sh: gs: command not found\n", 2047) =3D 26
>     15154 write(4, "D [09/Nov/2017:20:06:50 +0100] [Job 13] sh: gs: comma=
nd not found\n", 66) =3D 66
>
> Thank you for your help! How could we continue debugging?

IIUC, process 31377 is started by cupsd itself.  Commit
1728c411718e3b358c06561d6e80b47d7b331617 wrapped the cups-filters
programs but not cupsd itself.  Perhaps we need to wrap cupsd similarly?
Could you grep the source of cups itself to see if it contains this =E2=80=
=98gs=E2=80=99
invocation?

In the meantime, can you try adding ghostcript to your system profile?
That should work around the problem.

Thanks,
Ludo=E2=80=99.




Information forwarded to bug-guix@HIDDEN:
bug#29219; Package guix. Full text available.

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References: <87efp8fqab.fsf@HIDDEN> <87r2t7q0t5.fsf@HIDDEN>
From: Mekeor Melire <mekeor.melire@HIDDEN>
To: Ludovic =?utf-8?Q?Court=C3=A8s?= <ludo@HIDDEN>
Subject: Re: bug#29219: CUPS filter still can't access Ghostscript (gs)
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Date: Thu, 09 Nov 2017 20:19:17 +0100
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Ludovic Courtès <ludo@HIDDEN> writes:

> Mekeor Melire <mekeor.melire@HIDDEN> skribis:

>> But although I was expecting commit
>> 1728c411718e3b358c06561d6e80b47d7b331617¹ to fix this issue, when I try
>> the ljet4² driver, I still get this error in /var/log/cups/error_log³:

>>     sh: gs: command not found
>>     Process is dying with \"Unable to determine number of pages, page count: -1
>>     \", exit stat 3

> Just make sure to reconfigure from a recent-enough commit (run ‘guix
> --version’ as root to see which commit you’re using.)

Done. I'm running a recent-enough commit. (Namely
46dea1241c801af5aa65e0c7b4e84bb0aff11273.)

> If it turns out you’re already using CUPS with commit
> 1728c411718e3b358c06561d6e80b47d7b331617, could you reproduce the issue
> while running “strace -p PID -f -s 345 -o log”, where PID is the PID of
> cupsd as shown by ‘herd status cups’?

You can find the log here: <http://sprunge.us/UDOY>. These might be the
interesting lines:

    $ grep -E '[^a-zA-Z0-9]gs' log
    31377 execve("/gnu/store/…-bash-static-4.4.12/bin/sh", ["sh", "-c", "gs -dNODISPLAY -q -c '/pdffile (/var/spool/cups/tmp/foomatic-4ngnEr) (r) file def pdfdict begin pdffile pdfopen begin (PageCount: ) print pdfpagecount == flush currentdict pdfclose end end quit'"], 0x149e810 /* 33 vars */ <unfinished ...>
    31377 stat("/gnu/store/…-cups-server-bin/lib/cups/filter/gs", 0x7ffd7921b5c0) = -1 ENOENT (No such file or directory)
    31377 stat("/gnu/store/…-cups-2.2.4/bin/gs", 0x7ffd7921b5c0) = -1 ENOENT (No such file or directory)
    31377 stat("/gnu/store/…-cups-2.2.4/sbin/gs", 0x7ffd7921b5c0) = -1 ENOENT (No such file or directory)
    31377 stat("/bin/gs", 0x7ffd7921b5c0)   = -1 ENOENT (No such file or directory)
    31377 stat("/usr/bin/gs", 0x7ffd7921b5c0) = -1 ENOENT (No such file or directory)
    31377 write(2, "sh: gs: command not found\n", 26) = 26
    15154 <... read resumed> "sh: gs: command not found\n", 2047) = 26
    15154 write(4, "D [09/Nov/2017:20:06:50 +0100] [Job 13] sh: gs: command not found\n", 66) = 66

Thank you for your help! How could we continue debugging?

--
mekeor ~ EDD3 DFFA 76F6 11C0 145F 9A99 AC85 BAD8 A2F8 C868




Information forwarded to bug-guix@HIDDEN:
bug#29219; Package guix. Full text available.

Message received at 29219 <at> debbugs.gnu.org:


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From: ludo@HIDDEN (Ludovic =?utf-8?Q?Court=C3=A8s?=)
To: Mekeor Melire <mekeor.melire@HIDDEN>
Subject: Re: bug#29219: CUPS filter still can't access Ghostscript (gs)
References: <87efp8fqab.fsf@HIDDEN>
Date: Thu, 09 Nov 2017 10:05:42 +0100
In-Reply-To: <87efp8fqab.fsf@HIDDEN> (Mekeor Melire's message of "Wed, 08
 Nov 2017 21:50:52 +0100")
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Hi,

Mekeor Melire <mekeor.melire@HIDDEN> skribis:

> I added two printers through CUPS' web interface (localhost:631) using
> the PPD driver file which I downloaded (from openprinting.org): one
> called ljet4 (which calls Ghostscript) and one called Postscript (which
> just calls `cat`)=E2=81=B0. The latter worked.
>
>
> But although I was expecting commit
> 1728c411718e3b358c06561d6e80b47d7b331617=C2=B9 to fix this issue, when I =
try
> the ljet4=C2=B2 driver, I still get this error in /var/log/cups/error_log=
=C2=B3:
>
>
>     sh: gs: command not found
>     Process is dying with \"Unable to determine number of pages, page cou=
nt: -1
>     \", exit stat 3
>
>
> Is anybody able to reproduce this issue?
>
> How can I be sure that the cups-service I'm running is the recent one
> which includes that commit? (I tried pulling guix and rebuilding the
> system afterwards and restarting cups-service afterwards.)

Just make sure to reconfigure from a recent-enough commit (run =E2=80=98guix
--version=E2=80=99 as root to see which commit you=E2=80=99re using.)

If it turns out you=E2=80=99re already using CUPS with commit
1728c411718e3b358c06561d6e80b47d7b331617, could you reproduce the issue
while running =E2=80=9Cstrace -p PID -f -s 345 -o log=E2=80=9D, where PID i=
s the PID of
cupsd as shown by =E2=80=98herd status cups=E2=80=99?

TIA!

Ludo=E2=80=99.




Information forwarded to bug-guix@HIDDEN:
bug#29219; Package guix. Full text available.

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From: Mekeor Melire <mekeor.melire@HIDDEN>
To: bug-guix@HIDDEN
Subject: CUPS filter still can't access Ghostscript (gs)
Date: Wed, 08 Nov 2017 21:50:52 +0100
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I added two printers through CUPS' web interface (localhost:631) using
the PPD driver file which I downloaded (from openprinting.org): one
called ljet4 (which calls Ghostscript) and one called Postscript (which
just calls `cat`)⁰. The latter worked.


But although I was expecting commit
1728c411718e3b358c06561d6e80b47d7b331617¹ to fix this issue, when I try
the ljet4² driver, I still get this error in /var/log/cups/error_log³:


    sh: gs: command not found
    Process is dying with \"Unable to determine number of pages, page count: -1
    \", exit stat 3


Is anybody able to reproduce this issue?

How can I be sure that the cups-service I'm running is the recent one
which includes that commit? (I tried pulling guix and rebuilding the
system afterwards and restarting cups-service afterwards.)

What am I doing wrong?


⁰: https://www.openprinting.org/ppd-o-matic.php?driver=Postscript&printer=Kyocera-FS-920&show=1
¹: https://git.savannah.gnu.org/cgit/guix.git/commit/?id=1728c411718e3b358c06561d6e80b47d7b331617
²: https://www.openprinting.org/ppd-o-matic.php?driver=ljet4&printer=Kyocera-FS-920&show=1
³: http://sprunge.us/EMbF


--
mekeor ~ EDD3 DFFA 76F6 11C0 145F 9A99 AC85 BAD8 A2F8 C868




Acknowledgement sent to Mekeor Melire <mekeor.melire@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-guix@HIDDEN. Full text available.
Report forwarded to bug-guix@HIDDEN:
bug#29219; Package guix. Full text available.
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