Systemd-247
Introduction to systemd
While systemd was installed when
building LFS, there are many features provided by the package that
were not included in the initial installation because Linux-PAM was not yet installed. The
systemd package needs to be
rebuilt to provide a working systemd-logind service, which
provides many additional features for dependent packages.
This package is known to build and work properly using an LFS-10.1
platform.
Package Information
Additional Downloads
systemd Dependencies
Required
Linux-PAM-1.5.1
Recommended Runtime Dependencies
Polkit-0.118
Optional
btrfs-progs-5.10.1, cURL-7.75.0,
cryptsetup-2.3.4, git-2.30.1, GnuTLS-3.7.0,
iptables-1.8.7, libgcrypt-1.9.2,
libidn2-2.3.0, libpwquality-1.4.4, libseccomp-2.5.1,
libxkbcommon-1.0.3, make-ca-1.7,
pcre2-10.36, qemu-5.2.0, qrencode-4.1.1, Valgrind-3.16.1,
zsh-5.8 (for the zsh completions), gnu-efi,
kexec-tools,
libfido2, libmicrohttpd,
lz4,
quota-tools and
Sphinx
Optional (to rebuild the manual pages)
docbook-xml-4.5, docbook-xsl-1.79.2, libxslt-1.1.34, and
lxml-4.6.2 (to build the index of systemd manual
pages)
User Notes: http://wiki.linuxfromscratch.org/blfs/wiki/systemd
Installation of systemd
Apply a patch to fix regressions in systemd-networkd and
segmentation faults in systemctl:
patch -Np1 -i ../systemd-247-upstream_fixes-1.patch
Remove an unneeded group, render
,
from the default udev rules:
sed -i 's/GROUP="render"/GROUP="video"/' rules.d/50-udev-default.rules.in
Rebuild systemd by running the
following commands:
mkdir build &&
cd build &&
meson --prefix=/usr \
-Dblkid=true \
-Dbuildtype=release \
-Ddefault-dnssec=no \
-Dfirstboot=false \
-Dinstall-tests=false \
-Dldconfig=false \
-Dman=auto \
-Drootprefix= \
-Drootlibdir=/lib \
-Dsplit-usr=true \
-Dsysusers=false \
-Drpmmacrosdir=no \
-Db_lto=false \
-Dhomed=false \
-Duserdb=false \
-Dmode=release \
-Dpamconfdir=/etc/pam.d \
-Ddocdir=/usr/share/doc/systemd-247 \
.. &&
ninja
Note
For the best test results, make sure you run the testsuite from a
system that is booted by the same systemd version you are rebuilding.
To test the results, issue: ninja
test.
Now, as the root
user:
ninja install
Command Explanations
-Dpamconfdir=/etc/pam.d
:
Forces the PAM files to be installed in /etc/pam.d rather than
/usr/lib/pam.d.
-Duserdb=false
: Removes a
daemon that does not offer any use under a BLFS configuration. If
you wish to enable the userdbd
daemon, replace "false" with "true" in the above meson command.
-Dhomed=false
: Remove a
daemon that does not offer any use under a traditional BLFS
configuration, especially using accounts created with useradd. To
enable systemd-homed, first ensure that you have cryptsetup-2.3.4 and libpwquality-1.4.4, and then change
"false" to "true" in the above meson command.
Configuring systemd
The /etc/pam.d/system-session
file
needs to be modified and a new file needs to be created in order
for systemd-logind to
work correctly. Run the following commands as the root
user:
cat >> /etc/pam.d/system-session << "EOF"
# Begin Systemd addition
session required pam_loginuid.so
session optional pam_systemd.so
# End Systemd addition
EOF
cat > /etc/pam.d/systemd-user << "EOF"
# Begin /etc/pam.d/systemd-user
account required pam_access.so
account include system-account
session required pam_env.so
session required pam_limits.so
session required pam_unix.so
session required pam_loginuid.so
session optional pam_keyinit.so force revoke
session optional pam_systemd.so
auth required pam_deny.so
password required pam_deny.so
# End /etc/pam.d/systemd-user
EOF
Warning
If upgrading from a previous version of systemd and an initrd is
used for system boot, you should generate a new initrd before
rebooting the system.
Contents
A list of the installed files, along with their short descriptions
can be found at
../../../../lfs/view/10.1/chapter08/systemd.html#contents-systemd.
Listed below are the newly installed libraries and directories
along with short descriptions.
Installed Programs:
homectl (if cryptsetup-2.3.4 is installed) and
userdbctl (optionally)
Installed Libraries:
pam_systemd.so (in /lib/security
)
Installed Directories:
None
Short Descriptions
homectl
|
is a tool to create, remove, change, or inspect a home
directory managed by systemd-homed; note
that it's useless for the classic UNIX users and home
directories which we are using in LFS/BLFS book
|
userdbctl
|
inspects users, groups, and group memberships
|
pam_systemd.so
|
is a PAM module used to register user sessions with the
systemd login manager,
systemd-logind
|
Last updated on 2021-02-22 17:02:40 -0800