2022-11-18 18:27:36 +00:00
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- name: Install RPM packages from CentOS Stream
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become: yes
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package:
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name:
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- bash-completion
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- flatpak-session-helper
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2023-01-27 19:54:53 +00:00
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- gcc
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2022-11-18 18:27:36 +00:00
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- golang
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- httpd-tools
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- meson
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- ninja-build
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- openssl
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- podman
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Support subordinate user and group ID ranges on enterprise set-ups
On enterprise FreeIPA set-ups, the subordinate user and group IDs are
provided by SSSD's sss plugin for the GNU Name Service Switch (or NSS)
functionality of the GNU C Library. They are not listed in /etc/subuid
and /etc/subgid. Therefore, its necessary to use libsubid.so to check
the subordinate ID ranges.
The CGO interaction with libsubid.so is loosely based on 'readSubid' in
github.com/containers/storage/pkg/idtools [1].
However, unlike 'readSubid', this code considers the absence of any
range (ie., nRanges == 0) to be an error as well.
More importantly, this code uses dlopen(3) and friends to dynamically
load the symbols from libsubid.so, instead of linking to libsubid.so at
build-time and having the dependency noted in the /usr/bin/toolbox
binary. This is done because libsubid.so itself depends on several
other shared libraries, and indirect dependencies can't be influenced
by the RUNPATH [2] embedded in the /usr/bin/toolbox binary [3]. Hence,
when the binary is used inside Toolbx containers (eg., as the entry
point), those indirect dependencies won't be picked from the host's
runtime against which the binary was built. This can render the binary
useless due to ABI compatibility issues. Using dlopen(3) avoids this
problem, especially because libsubid.so is only used when running on the
host.
Care was taken to not load and link libsubid.so twice to separately
validate the subordinate ID ranges for the user and the group. Note
that libsubid_init() must be passed a FILE pointer for logging.
Otherwise, it will create it's own for logging, and there's no way to
close it during dlclose(3).
Version 4 of the libsubid.so API/ABI [4] was released in Shadow 4.10,
which is newer than the versions shipped on RHEL 8 and Debian 10 [5],
and even that newer version had some problems [6]. Therefore, support
for older versions, with the relevant workarounds, is necessary.
Fortunately, the oldest that needs to be support is Shadow 4.9 because
that's when libsubid.so was introduced [7].
Note that SUBID_ABI_VERSION was only introduced with version 4 of the
libsubid.so API/ABI released in Shadow 4.10 [8]. The first release of
libsubid.so in Shadow 4.9 already had an ABI version of 3.0.0 [9], since
it was bumped a few times during development, so that's what's assumed
when SUBID_ABI_VERSION is absent.
This code doesn't set the public variables Prog and shadow_logfd that
older Shadow versions used to expect for logging, because from Shadow
4.9 onwards there's a separate function [4,10] to specify these. This
can be changed if there are libsubid.so versions in the wild that really
do need those public variables to be set.
Finally, ISO C99 is required because of the use of <stdbool.h> in the
libsubid.so API.
Some changes by Debarshi Ray.
[1] https://github.com/containers/storage/blob/main/pkg/idtools/idtools_supported.go
[2] https://man7.org/linux/man-pages/man8/ld.so.8.html
[3] Commit 6063eb27b9893994
https://github.com/containers/toolbox/issues/821
[4] Shadow commit 32f641b207f6ddff
https://github.com/shadow-maint/shadow/commit/32f641b207f6ddff
https://github.com/shadow-maint/shadow/issues/443
[5] https://packages.debian.org/source/buster/shadow
[6] Shadow commit 79157cbad87f42cd
https://github.com/shadow-maint/shadow/commit/79157cbad87f42cd
https://github.com/shadow-maint/shadow/issues/465
[7] Shadow commit 0a7888b1fad613a0
https://github.com/shadow-maint/shadow/commit/0a7888b1fad613a0
https://github.com/shadow-maint/shadow/issues/154
[8] Shadow commit 0c9f64140852e8d5
https://github.com/shadow-maint/shadow/commit/0c9f64140852e8d5
https://github.com/shadow-maint/shadow/pull/449
[9] Shadow commit 3d670ba7ed58f910
https://github.com/shadow-maint/shadow/commit/3d670ba7ed58f910
https://github.com/shadow-maint/shadow/issues/339
[10] Shadow commit 2b22a6909dba60d
https://github.com/shadow-maint/shadow/commit/2b22a6909dba60d
https://github.com/shadow-maint/shadow/issues/325
https://github.com/containers/toolbox/issues/1074
Signed-off-by: Martin Jackson <martjack@redhat.com>
2022-11-28 22:45:42 +00:00
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- shadow-utils-subid-devel
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2022-11-18 18:27:36 +00:00
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- skopeo
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- systemd
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- udisks2
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- name: Install RPM packages from CentOS Stream CodeReady Linux Builder
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become: yes
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package:
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enablerepo: crb
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name:
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- golang-github-cpuguy83-md2man
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- name: Enable EPEL
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become: yes
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package:
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name:
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- epel-release
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- name: Install RPM packages from EPEL
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become: yes
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package:
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name:
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- ShellCheck
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- bats
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- codespell
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- fish
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- name: Download Go modules
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2023-06-22 15:49:50 +00:00
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command: go mod download -x
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2022-11-18 18:27:36 +00:00
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args:
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chdir: '{{ zuul.project.src_dir }}/src'
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2023-06-22 15:49:50 +00:00
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- name: Initialize Git submodules
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command: git submodule init
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args:
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chdir: '{{ zuul.project.src_dir }}'
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- name: Update Git submodules
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command: git submodule update
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2022-11-18 18:27:36 +00:00
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args:
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chdir: '{{ zuul.project.src_dir }}'
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- name: Check versions of crucial packages
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2023-01-09 13:28:56 +00:00
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command: rpm -qa ShellCheck codespell *kernel* gcc *glibc* golang shadow-utils-subid-devel podman conmon containernetworking-plugins containers-common container-selinux crun fuse-overlayfs flatpak-session-helper skopeo
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2022-11-18 18:27:36 +00:00
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- name: Show podman versions
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command: podman version
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- name: Show podman debug information
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command: podman info --debug
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