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Bug#931363: marked as done (printer-driver-cups-pdf: Fails to create output PDF (permission denied))

Your message dated Mon, 24 Mar 2025 17:00:38 +0200
with message-id <CAPZXPQfqWNX75d=zdN_f-5uJQvdnnsJRVKKm+c3XHajbqckPYQ@mail.gmail.com>
and subject line Re: Bug#931363: Fails to create output PDF (permission denied)
has caused the Debian Bug report #931363,
regarding printer-driver-cups-pdf: Fails to create output PDF (permission denied)
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
931363: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=931363
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: printer-driver-cups-pdf
Version: 3.0.1-5
Severity: normal
The PDF driver is failing to write the output PDFs. For example, a command like 

 echo foo | lp -d PDF

yields the following DEBUG output in the log:

 Wed Jul  3 09:40:55 2019  [DEBUG] *** Final Configuration ***
 Wed Jul  3 09:40:55 2019  [DEBUG] AnonDirName        = "/var/spool/cups-pdf/ANONYMOUS"
 Wed Jul  3 09:40:55 2019  [DEBUG] AnonUser           = "nobody"
 Wed Jul  3 09:40:55 2019  [DEBUG] GhostScript        = "/usr/bin/gs"
 Wed Jul  3 09:40:55 2019  [DEBUG] GSCall             = "%s -q -dCompatibilityLevel=%s -dNOPAUSE -dBATCH -dSAFER -sDEVICE=pdfwrite -sOutputFile="%s" -dAutoRotatePages=/PageByPage -dAutoFilterColorImages=false -dColorImageFilter=/FlateEncode -dPDFSETTINGS=/prepress -c .setpdfwrite -f %s"
 Wed Jul  3 09:40:55 2019  [DEBUG] Grp                = "lpadmin"
 Wed Jul  3 09:40:55 2019  [DEBUG] GSTmp              = "TMPDIR=/var/tmp"
 Wed Jul  3 09:40:55 2019  [DEBUG] Log                = "/var/log/cups"
 Wed Jul  3 09:40:55 2019  [DEBUG] PDFVer             = "1.4"
 Wed Jul  3 09:40:55 2019  [DEBUG] PostProcessing     = ""
 Wed Jul  3 09:40:55 2019  [DEBUG] Out                = "${HOME}/PDF"
 Wed Jul  3 09:40:55 2019  [DEBUG] Spool              = "/var/spool/cups-pdf/SPOOL"
 Wed Jul  3 09:40:55 2019  [DEBUG] UserPrefix         = ""
 Wed Jul  3 09:40:55 2019  [DEBUG] RemovePrefix       = ""
 Wed Jul  3 09:40:55 2019  [DEBUG] OutExtension       = "pdf"
 Wed Jul  3 09:40:55 2019  [DEBUG] Cut                = -1
 Wed Jul  3 09:40:55 2019  [DEBUG] Truncate           = 256
 Wed Jul  3 09:40:55 2019  [DEBUG] DirPrefix          = 0
 Wed Jul  3 09:40:55 2019  [DEBUG] Label              = 0
 Wed Jul  3 09:40:55 2019  [DEBUG] LogType            = 4
 Wed Jul  3 09:40:55 2019  [DEBUG] LowerCase          = 1
 Wed Jul  3 09:40:55 2019  [DEBUG] TitlePref          = 1
 Wed Jul  3 09:40:55 2019  [DEBUG] DecodeHexStrings   = 1
 Wed Jul  3 09:40:55 2019  [DEBUG] FixNewlines        = 0
 Wed Jul  3 09:40:55 2019  [DEBUG] AllowUnsafeOptions = 0
 Wed Jul  3 09:40:55 2019  [DEBUG] AnonUMask          = 0000
 Wed Jul  3 09:40:55 2019  [DEBUG] UserUMask          = 0077
 Wed Jul  3 09:40:55 2019  [DEBUG] *** End of Configuration ***
 Wed Jul  3 09:40:55 2019  [DEBUG] set new gid: lpadmin
 Wed Jul  3 09:40:55 2019  [DEBUG] initialization finished: v3.0.1
 Wed Jul  3 09:40:55 2019  [DEBUG] user identified: madduck
 Wed Jul  3 09:40:55 2019  [DEBUG] output directory name generated: /home/ssd/madduck/PDF
 Wed Jul  3 09:40:55 2019  [DEBUG] user information prepared
 Wed Jul  3 09:40:55 2019  [DEBUG] spoolfile name created: /var/spool/cups-pdf/SPOOL/cups2pdf-8702
 Wed Jul  3 09:40:55 2019  [DEBUG] source stream ready
 Wed Jul  3 09:40:55 2019  [DEBUG] destination stream ready: /var/spool/cups-pdf/SPOOL/cups2pdf-8702
 Wed Jul  3 09:40:55 2019  [DEBUG] owner set for spoolfile: /var/spool/cups-pdf/SPOOL/cups2pdf-8702
 Wed Jul  3 09:40:55 2019  [DEBUG] using traditional fgets
 Wed Jul  3 09:40:55 2019  [DEBUG] found beginning of postscript code: %!PS-Adobe-3.0

 Wed Jul  3 09:40:55 2019  [DEBUG] now extracting postscript code
 Wed Jul  3 09:40:55 2019  [DEBUG] found title in ps code: ((stdin))
 madduck/PDF
 Wed Jul  3 09:40:55 2019  [DEBUG] found end of postscript code: %%EOF

 Wed Jul  3 09:40:55 2019  [DEBUG] all data written to spoolfile: /var/spool/cups-pdf/SPOOL/cups2pdf-8702
 Wed Jul  3 09:40:55 2019  [DEBUG] trying to use commandline title:
 Wed Jul  3 09:40:55 2019  [DEBUG] checking for hex strings:
 Wed Jul  3 09:40:55 2019  [DEBUG] not a hex string, has no start marker:
 Wed Jul  3 09:40:55 2019  [DEBUG] calling alternate_replace_string
 Wed Jul  3 09:40:55 2019  [DEBUG] removing alternate special characters from title:
 Wed Jul  3 09:40:55 2019  [DEBUG] empty commandline title, using PS title: ((stdin))
 madduck/PDF
 Wed Jul  3 09:40:55 2019  [DEBUG] checking for hex strings: ((stdin))
 madduck/PDF
 Wed Jul  3 09:40:55 2019  [DEBUG] not a hex string, has no start marker: ((stdin))
 madduck/PDF
 Wed Jul  3 09:40:55 2019  [DEBUG] calling alternate_replace_string
 Wed Jul  3 09:40:55 2019  [DEBUG] removing alternate special characters from title: ((stdin))
 madduck/PDF
 Wed Jul  3 09:40:55 2019  [DEBUG] removing leading _ from title: __stdin___madduck_PDF
 Wed Jul  3 09:40:55 2019  [DEBUG] title successfully retrieved: stdin___madduck_PDF
 Wed Jul  3 09:40:55 2019  [DEBUG] input data read from stdin
 Wed Jul  3 09:40:55 2019  [DEBUG] output filename created: /home/ssd/madduck/PDF/stdin___madduck_PDF.pdf
 Wed Jul  3 09:40:55 2019  [DEBUG] ghostscript commandline built: /usr/bin/gs -q -dCompatibilityLevel=1.4 -dNOPAUSE -dBATCH -dSAFER -sDEVICE=pdfwrite -sOutputFile="/home/ssd/madduck/PDF/stdin___madduck_PDF.pdf" -dAutoRotatePages=/PageByPage -dAutoFilterColorImages=false -dColorImageFilter=/FlateEncode -dPDFSETTINGS=/prepress -c .setpdfwrite -f /var/spool/cups-pdf/SPOOL/cups2pdf-8702
 Wed Jul  3 09:40:55 2019  [DEBUG] output file unlinked: /home/ssd/madduck/PDF/stdin___madduck_PDF.pdf
 Wed Jul  3 09:40:55 2019  [DEBUG] TMPDIR set for GhostScript: /var/tmp
 Wed Jul  3 09:40:55 2019  [DEBUG] waiting for child to exit
 Wed Jul  3 09:40:55 2019  [DEBUG] entering child process
 Wed Jul  3 09:40:55 2019  [DEBUG] GID set for current user
 Wed Jul  3 09:40:55 2019  [DEBUG] supplementary groups set for current user
 Wed Jul  3 09:40:55 2019  [DEBUG] UID set for current user: madduck
 Wed Jul  3 09:40:55 2019  [DEBUG] ghostscript has finished: 256
 Wed Jul  3 09:40:55 2019  [DEBUG] no postprocessing
 Wed Jul  3 09:40:55 2019  [DEBUG] spoolfile unlinked: /var/spool/cups-pdf/SPOOL/cups2pdf-8702
 Wed Jul  3 09:40:55 2019  [DEBUG] all memory has been freed
Not only is the output file unlinked right after the call to /usr/bin/gs; This call itself also fails with a "permission denied" error, according to strace: 

 [pid  2545] openat(AT_FDCWD, "/home/ssd/madduck/PDF/stdin___madduck_PDF.pdf", O_RDWR|O_CREAT|O_TRUNC, 0666) = -1 EACCES (Permission denied)
The target directory is 0700, but even changing it to 1777 doesn't fix things.
Note that if I reduce the LogLevel to 3 in /etc/cups/cups-pdf.conf, then the log output suggests that PDF creation is being successful, after failing to set the file mode: 

 Wed Jul  3 09:44:00 2019  [ERROR] failed to set file mode for PDF file: /home/ssd/madduck/PDF/2019-07-03-094400-740472161-muttprint.pdf (non fatal)
 Wed Jul  3 09:44:00 2019  [STATUS] PDF creation successfully finished for madduck
Again, using strace, the error derives from the following call to chmod 

 [pid  2543] chmod("/home/ssd/madduck/PDF/stdin___madduck_PDF.pdf", 0600) = -1 ENOENT (No such file or directory)
which obviously fails, as the file has never been created, and it was unlinked anyway.
Finally, please note that I have a second sid system, pretty much identical to this one, with an identical cups-pdf.conf file, but there, the PDF file is written just fine.
Also note that this used to work, but recently stopped working on this machine. Unfortunately, I am unable to say what has changed since then, as I didn't take note when the problem first appeared. 

--
System Information:
Debian Release: 10.0
 APT prefers unstable
 APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.19.0-4-amd64 (SMP w/8 CPU cores)
Kernel taint flags: TAINT_FIRMWARE_WORKAROUND
Locale: LANG=en_NZ, LC_CTYPE=en_NZ.UTF-8 (charmap=UTF-8), LANGUAGE=en_NZ:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages printer-driver-cups-pdf depends on:
ii  cups            2.2.10-6
ii  cups-client     2.2.10-6
ii  ghostscript     9.27~dfsg-2
ii  libc6           2.28-10
ii  libcups2        2.2.10-6
ii  libpaper-utils  1.1.28

printer-driver-cups-pdf recommends no packages.

Versions of packages printer-driver-cups-pdf suggests:
pn  system-config-printer  <none>

--
Configuration Files:
/etc/cups/cups-pdf.conf changed:
Out ${HOME}/PDF
Truncate 256
Cut -1
TitlePref 1
Grp lpadmin
DecodeHexStrings 1


--
no debconf information

--
.''`.   martin f. krafft <madduck@d.o> @martinkrafft
: :'  :  proud Debian developer
`. `'`   http://people.debian.org/~madduck
 `-  Debian - when you have better things to do than fixing systems

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--- End Message ---
--- Begin Message --- 
ma 24.3.2025 klo 15.25 martin f krafft (madduck@debian.org) kirjoitti:
>
> Regarding the following, written by “Martin-Éric Racine” on 2025-03-11 at 20:22 Uhr +0200:
>
> Just to check, does this still apply to what we have in Bookworm or Trixie?
>
> I have not encountered this problem in years, but I also don’t have this machine anymore. Probably can be closed.

Closing.

--- End Message ---
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