Bug#832521: Please backport fix for O_TMPFILE for jessie

[Michael Biebl]

Source: glibc
Version: 2.19-18+deb8u4
Severity: normal
Tags: patch

Hi,

while working on a backport of systemd v230 for jessie, we ran into
issues. Our test-suite was failing on i386, specifically test-tmpfiles.
It turns out, the files created wit O_TMPFILE had broken permissions and
were unreadable. After further investigation, this turned out to be a
bug in glibc[2].
I've backported the commit to 2.19 and with that patch applied, our
test-suite completed successfully on i386. The patch I've attached did
compile successfully on i386 and it fixed our issue in systemd. There
where a few conflicts when cherry-picking the patch, so please
double-check, just in case I missed something.

It would be great if you could include this patch in your next stable
upload. I noticed that there is already an accepted upload
2.19-18+deb8u5 for jessie 8.6. It would be awesome if you could make a
follow-up upload 2.19-18+deb8u6 to get that fix into 8.6 (I think there
is still some time left for that). If not, please consider including it
for 8.7.
The commit itself has been in unstable/stretch for a while, so seen some
wider testing.

Regards,
Michael

[1] https://buildd.debian.org/status/fetch.php?pkg=systemd&arch=i386&ver=230-7~bpo8%2B1&stamp=1468945449
[2] https://sourceware.org/bugzilla/show_bug.cgi?id=17523
-- System Information:
Debian Release: stretch/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'unstable'), (200, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.6.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
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