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[Rob Savoury <1901355@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Samba 4.12.5 as shipped in Groovy FTBFS (specifically amd64, not i386
which builds fine due no Ceph support, other arches untested) against
Ceph 15.2.5 also shipped in Groovy, due changes in Ceph > 15.2.3 to
cephfs.

Samba 4.12.5 was successfully built against Ceph 15.2.3 for Groovy
release repos on 2020-09-28
(https://launchpad.net/ubuntu/+source/samba/2:4.12.5+dfsg-
3ubuntu4/+build/20085494) and then ceph 15.2.5 was built for Groovy
release repos on 2020-10-07
(https://launchpad.net/ubuntu/+source/ceph/15.2.5-0ubuntu1/+build/20121251).

So it seems that no official Ubuntu build of Samba 4.12.5 has yet been
attempted against new Ceph 15.2.5, though Samba may well need a security
patch or two in the lifetime of the Groovy release (almost a certainty!)
so this Samba build failure relative Ceph will need to be resolved one
way or another, prior to any such possible security patch of Samba.

Here are the relevant excerpts from the Launchpad build log (see
https://launchpad.net/~savoury1/+archive/ubuntu/build-tools-
stage/+build/20183191 for full log):

---
   debian/rules override_dh_auto_configure
make[1]: Entering directory '/<<BUILDDIR>>/samba-4.12.5+dfsg'
.
.
.
Checking for header cephfs/libcephfs.h                                                          : 08:35:23 runner ['/usr/bin/gcc', '-D_SAMBA_BUILD_=4', '-DHAVE_CONFIG_H=1', '-g', '-O2', '-fdebug-prefix-map=/<<BUILDDIR>>/samba-4.12.5+dfsg=.', '-fstack-protector-strong', '-Wformat', '-Werror=format-security', '-MMD', '-D_GNU_SOURCE=1', '-D_XOPEN_SOURCE_EXTENDED=1', '-DHAVE_CONFIG_H=1', '-D_FILE_OFFSET_BITS=64', '-D_FILE_OFFSET_BITS=64', '../../test.c', '-c', '-o/<<BUILDDIR>>/samba-4.12.5+dfsg/bin/.conf_check_3436ec45740b8b4a1c7dcc71b48a3f82/testbuild/default/test.c.1.o', '-Wdate-time', '-D_FORTIFY_SOURCE=2']
no 
.
.
.
dpkg-shlibdeps: error: cannot read debian/samba-vfs-modules/usr/lib/*/samba/vfs/ceph.so: No such file or directory
dh_shlibdeps: error: dpkg-shlibdeps -Tdebian/registry-tools.substvars -pvfsceph -dRecommends -e debian/samba-vfs-modules/usr/lib/\*/samba/vfs/ceph.so debian/registry-tools/usr/bin/regpatch debian/registry-tools/usr/bin/regtree debian/registry-tools/usr/bin/regdiff debian/registry-tools/usr/bin/regshell returned exit code 2
dpkg-shlibdeps: error: cannot read debian/samba-vfs-modules/usr/lib/*/samba/vfs/ceph.so: No such file or directory
.
.
.
dh_shlibdeps: error: Aborting due to earlier error
make[1]: *** [debian/rules:288: override_dh_shlibdeps] Error 25
---

Ceph history here
https://github.com/ceph/ceph/commits/master/src/include/cephfs shows
various relevant changes to source (especially changes on Apr 30, 2020
with commits 4436f27, 8370f70, adcf12d, e3b9df7).

It seems the Samba waf script (source3/wscript) might need modifications
to account for the changes to cephfs? And are the changes to cephfs
actually compatible with Samba's current usage or not, ie. does Samba
source need to be patched beyond a change to the waf build script(s)?
Questions I can't answer, having very little familiarity with the code
base of either Samba or Ceph (or with waf).

So far I've been unable to find any relevant upstream commits to Samba
that account for the changes evident in Ceph 15.2.5 to cephfs.

Reason for rebuilding Samba in my PPA is the missing time.h header that
results in FTBFS for libsmbclient users (ie. FFmpeg, when smbclient
support is explicitly enabled). Might be useful to have Samba in Ubuntu
repos officially patched for the time.h header issue too, though maybe
that's for another bug report than this one?

See https://gitlab.com/samba-
team/samba/-/commit/1114b02a72ce0c86a5301816560d270ec47f8be3 for more
details.

** Affects: samba (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1901355

Title:
  Groovy: Samba 4.12.5 FTBFS against Ceph 15.2.5

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