Re: [yocto] [meta-selinux] Dependency loop help with selinux userspace/python3/util-linux

["Peter Morrow" <peter.morrow@microsoft.com>]

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On Wed, 2019-12-11 at 08:41 -0500, Joe MacDonald wrote:

[Re: [yocto] [meta-selinux] Dependency loop help with selinux userspace/python3/util-linux] On 19.12.11 (Wed 09:21) Peter Morrow via Lists.Yoctoproject.Org wrote:


On Wed, 2019-12-11 at 10:18 +0800, Yi Zhao via Lists.Yoctoproject.Org

wrote:



On 12/5/19 9:46 PM, Peter Morrow via Lists.Yoctoproject.Org wrote:


Hi Folks,


I'm trying to upgrade the meta-selinux layer to use a newer version

of

the selinux userspace tools (from 2.8 to 2.9), in doing so these

newer

userspace tools now depend on python3 instead of python2.  This

unfortunately has created a build time dependency loop in yocto:


python3 --> util-linux --> libselinux --> python3 (used to be

python2

with 2.8 selinux userspace).



Hi Peter,

I had sent a series patches to update selinux usersapce tools from

2.8 ot 2.9:

<https://www.yoctoproject.org/pipermail/yocto/2019-November/047329.html>

https://www.yoctoproject.org/pipermail/yocto/2019-November/047329.html


After switch to python3, there is a loop dependency error with

libselinux-python package when build libselinux. So I split the

original libselinux recipe into  libselinux and libselinux-python.

You can refer my patchset.


Hi Yi,


Great!  Is there anything stopping these patches being merged?


No, no issue as far as I can tell, I'm preparing another merge to master

in the next couple of days.  This includes Yi's patches, my update

refpolicy purge feature and a few other things currently pending on the

list from the last few weeks.


-J.

Excellent , thanks Joe.

Peter.




Thanks,

Peter.





//Yi



Running "bitbake libselinux" results in a pile of loops, the one

below

illustrates the point.


ERROR:

Dependency loop #1 found:

  Task /workspace/git/yocto-selinux/meta-selinux/recipes-

security/selinux/libselinux_2.9.bb:do_package (dependent Tasks

['gcc-

runtime_9.2.bb:do_packagedata', 'libsepol_2.9.bb:do_packagedata',

'rpm_4.14.2.1.bb:do_populate_sysroot',

'glibc_2.30.bb:do_packagedata',

'python3_3.7.5.bb:do_packagedata',

'libpcre_8.43.bb:do_packagedata',

'pseudo_git.bb:do_populate_sysroot',

'dwarfsrcfiles.bb:do_populate_sysroot',

'libselinux_2.9.bb:do_install'])

  Task /workspace/git/yocto-selinux/meta-selinux/recipes-

security/selinux/libselinux_2.9.bb:do_packagedata (dependent Tasks

['libselinux_2.9.bb:do_package'])

  Task /workspace/git/yocto-selinux/poky/meta/recipes-

extended/pam/libpam_1.3.1.bb:do_package (dependent Tasks ['gcc-

runtime_9.2.bb:do_packagedata',

'rpm_4.14.2.1.bb:do_populate_sysroot',

'glibc_2.30.bb:do_packagedata', 'libselinux_2.9.bb:do_packagedata',

'flex_2.6.0.bb:do_packagedata',

'pseudo_git.bb:do_populate_sysroot',

'libxcrypt_4.4.8.bb:do_packagedata', 'libpam_1.3.1.bb:do_install',

'dwarfsrcfiles.bb:do_populate_sysroot',

'cracklib_2.9.5.bb:do_packagedata', 'libtool-

cross_2.4.6.bb:do_packagedata'])

  Task /workspace/git/yocto-selinux/poky/meta/recipes-

extended/pam/libpam_1.3.1.bb:do_packagedata (dependent Tasks

['libpam_1.3.1.bb:do_package'])

  Task /workspace/git/yocto-selinux/poky/meta/recipes-core/util-

linux/util-linux_2.34.bb:do_package (dependent Tasks ['gcc-

runtime_9.2.bb:do_packagedata',

'rpm_4.14.2.1.bb:do_populate_sysroot',

'bash-completion_2.9.bb:do_packagedata',

'zlib_1.2.11.bb:do_packagedata', 'glibc_2.30.bb:do_packagedata',

'libselinux_2.9.bb:do_packagedata',

'pseudo_git.bb:do_populate_sysroot',

'ncurses_6.1+20190803.bb:do_packagedata',

'libxcrypt_4.4.8.bb:do_packagedata', 'libcap-

ng_0.7.9.bb:do_packagedata', 'opkg-utils_0.4.1.bb:do_packagedata',

'libpam_1.3.1.bb:do_packagedata', 'util-

linux_2.34.bb:do_install_ptest_base',

'dwarfsrcfiles.bb:do_populate_sysroot', 'util-

linux_2.34.bb:do_install', 'libtool-

cross_2.4.6.bb:do_packagedata'])

  Task /workspace/git/yocto-selinux/poky/meta/recipes-core/util-

linux/util-linux_2.34.bb:do_packagedata (dependent Tasks ['util-

linux_2.34.bb:do_package'])

  Task /workspace/git/yocto-selinux/poky/meta/recipes-

devtools/python/python3_3.7.5.bb:do_package (dependent Tasks

['xz_5.2.4.bb:do_packagedata', 'bzip2_1.0.8.bb:do_packagedata',

'gdbm_1.18.1.bb:do_packagedata', 'libnsl2_git.bb:do_packagedata',

'gcc-

runtime_9.2.bb:do_packagedata',

'rpm_4.14.2.1.bb:do_populate_sysroot',

'python3_3.7.5.bb:do_install', 'libffi_3.3~rc0.bb:do_packagedata',

'pseudo_git.bb:do_populate_sysroot',

'sqlite3_3.29.0.bb:do_packagedata',

'openssl_1.1.1d.bb:do_packagedata',

'libtirpc_1.1.4.bb:do_packagedata',

'zlib_1.2.11.bb:do_packagedata',

'glibc_2.30.bb:do_packagedata',

'libxcrypt_4.4.8.bb:do_packagedata',

'python3_3.7.5.bb:do_install_ptest_base', 'util-

linux_2.34.bb:do_packagedata', 'opkg-

utils_0.4.1.bb:do_packagedata',

'readline_8.0.bb:do_packagedata',

'dwarfsrcfiles.bb:do_populate_sysroot', 'libtool-

cross_2.4.6.bb:do_packagedata'])

  Task /workspace/git/yocto-selinux/poky/meta/recipes-

devtools/python/python3_3.7.5.bb:do_packagedata (dependent Tasks

['python3_3.7.5.bb:do_package'])


Python3 (3.7.5) appears to depend on util-linux for libuuid

support, so

I don't think anything can be done with regards to

this.  libselinux

now depends on python3 as of 2.9, so again not much can be done

here.

It's proving a bit harder to track down the util-linux dependency

on

libselinux but I believe this is a hard depdency as well.


I'm using the master branch of both poky and meta-selinux for

testing,

my local.conf file has the following to enable testing:


DISTRO_FEATURES_append=" acl xattr pam selinux"


The crux of the libselinux recipe change is really just changing

the

python2 deps over to python3 ones in meta-selinux/recipes-

security/selinux/libselinux.inc.


At this point I'd be trying to look for places where recipes can be

split out to remove the loop, but nothing jumps out at me.


Can anyone offer any advice or pointers on how to get around

this?  Or

am I just stuffed?


Many Thanks,

Peter.




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