[Bug 1901355] Re: Groovy: libsmbclient users FTBFS against Samba 4.12.5

[Sebastien Bacher]

** Tags added: rls-gg-incoming

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Title:
  Groovy: libsmbclient users FTBFS against Samba 4.12.5

Status in samba package in Ubuntu:
  New

Bug description:
  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.

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