CHANGES WITH 253 in spe:
+ Deprecations and incompatible changes
+
+ * systemctl will now warn when invoked without /proc mounted (e.g. when
+ invoked after chroot into an image without the API mount points like
+ /proc being set up.) Operation in such an environment is not fully
+ supported.
+
+ * 'udevadm hwdb' subcommand is deprecated and will emit a warning.
+ systemd-hwdb (added in 2014) should be used instead.
+
+ * 'bootctl --json' now outputs well-formed JSON, instead of a stream
+ of newline-separated JSON objects.
+
+ * Udev rules in 60-evdev.rules have been changed to load hwdb properties
+ for all modalias patterns. Previously only the first matching pattern
+ was used. This could change what properties are assigned if the user
+ has more and less specific patterns that could match the same device,
+ but it is expected that the change will have no effect for most users.
+
+ New components:
+
+ * A tool to build, measure, and sign Unified Kernel Images (UKIs) has
+ been added. This replaces functionality provided by 'dracut --uefi'
+ and extends it with automatic calculation of offsets, insertion of
+ signed PCR policies generated by systemd-measure, support for initrd
+ concatenation, signing of the embedded Linux image and the combined
+ image with sbsign, and heuristics to autodetect the kernel uname and
+ verify the splash image.
+
+ Changes in systemd:
+
+ * Initrd environments which are not on a temporary file system (for
+ example an overlayfs combination) are now supported. Systemd will only
+ skip removal of the files in the initrd if it doesn't detect a
+ temporary file system.
+
+ * New MemoryZSwapMax= option has been added to configure
+ memory.zswap.max cgroup properties (the maximum amount of zswap used).
+
+ * Scope units now support OOMPolicy=. Login session scopes default to
+ OOMPolicy=continue, allowing login scopes to survive the oom killer
+ terminating some processes in the scope.
+
+ * systemd-fstab-generator now supports x-systemd.makefs option for
+ /sysroot (in the initrd).
+
+ Changes in udev:
+
+ * The new net naming scheme "v253" has been introduced. In the new
+ scheme, ID_NET_NAME_PATH is also set for USB devices not connected via
+ a PCI bus. This extends the converage of predictable interface names
+ in some embedded systems.
+
+ The "amba" bus path is now included in ID_NET_NAME_PATH, resulting in
+ a more informative path on some embedded systems.
+
Changes in sd-boot, bootctl, and the Boot Loader Specification:
* systemd-boot now passes its random seed directly to the kernel's RNG
protocol or a prior seed in LINUX_EFI_RANDOM_SEED_TABLE_GUID from a
preceding bootloader.
- * The random seed stored in ESP is now refreshed whenever
+ * The random seed stored in the ESP is now refreshed whenever
systemd-random-seed.service is run.
* systemd-boot handles various seed inputs using a domain- and
virtualized ones, and is activated in the case that the system token
is missing from either sd-boot and sd-stub booted systems.
+ * systemd-boot now supports being loaded not from the ESP, for example
+ for direct kernel boot under QEMU or when embedded into the firmware.
+
+ Changes in kernel-install:
+
+ * A new "installation layout" can be configured as layout=uki. With this
+ setting, a Boot Loader Specification Type#1 entry will not be created.
+ Instead, a new kernel-install plugin 90-uki-copy.install will copy any
+ .efi files from the staging area into the boot partition. A plugin to
+ generate the UKI .efi file must be provided separately.
+
Changes in systemctl:
- * systemctl reboot has dropped support for accepting a positional argument
- as the argument to reboot(2) syscall. Please use --reboot-argument instead.
+ * 'systemctl reboot' has dropped support for accepting a positional
+ argument as the argument to the reboot(2) syscall. Please use the
+ --reboot-argument option instead.
+
+ * 'systemctl disable' will now warn when called on units without install
+ information. A new --no-warn option has been added that silences this
+ warning.
+
+ * 'systemctl kexec' now supports XEN.
+
+ Changes in systemd-networkd and related tools:
+
+ * The RouteMetric= option (for DHCPv4, DHCPv6, and IPv6 advertised
+ routes) now accepts three values, for high, medium, and low preference
+ of the router (which can be set with the RouterPreference=) setting.
+
+ * systemd-networkd-wait-online now supports alternative interface names.
+
+ Changes in systemd-dissect:
+
+ * systemd-dissect gained a new option --list, to print the paths fo the
+ files and directories in the image.
+
+ * systemd-dissect gained a new option --mtree, to generate output
+ compatible with BSD mtree(5).
+
+ * systemd-dissect gained a new option --with, to execute a command in
+ the image temporarily mounted.
+
+ * systemd-dissect gained a new option --discover, to search for
+ Discoverable Disk Images (DDIs) in well-known directories. This will
+ list machine, portable service and system extension disk images.
+
+ * systemd-dissect now understands 2nd stage initrd images stored as a
+ Discoverable Disk Image (DDI).
+
+ Changes in systemd-repart:
+
+ * systemd-repart gained new options --include-partitions and
+ --exclude-partitions to filter operation on partitions by type UUID.
+ This allows systemd-repart to be used to build images in which the
+ type of one partition is set based on the contents of another
+ partition (for example when the boot partition shall include a verity
+ hash of the root partition).
+
+ * systemd-repart now supports erofs (a read-only file system similar to
+ squashfs).
+
+ Changes in systemd-homed:
+
+ * systemd-homed gained support for luksPbkdfForceIterations (the
+ intended number of iterations for the PBKDF operation on LUKS).
+
+ Changes in systemd-homenamed:
+
+ * systemd-homed now exports the contents of
+ /sys/class/dmi/id/bios_vendor and /sys/class/dmi/id/bios_date via two
+ new D-Bus properties: FirmwareVendor and FirmwareDate. This allows
+ unprivileged code to access those values.
+
+ Changes in libsystemd and shared code:
+
+ * sd-bus gained new convenience functions sd_bus_emit_signal_to(),
+ sd_bus_emit_signal_tov(), and sd_bus_message_new_signal_to().
+
+ * Detection of chroot environments now works if /proc/ is not mounted.
+ This affects systemd-detect-virt --chroot, but also means that systemd
+ tools will silently skip various operations in such an environment.
+
+ * "Lockheed Matrin Hardened Security for Intel Processors" (HS SRE)
+ virtualization is now detected.
+
+ Changes in the build system:
+
+ * Standalone variant of systemd-repart is built (if -Dstandalone=true).
+
+ * systemd-ac-power has been moved to /usr/bin/, to, for example, allow
+ scripts to conditionalize execution on AC power supply.
+
+ Changes in the documentation:
+
+ * Specifications that are not closely tied to systemd have moved to
+ https://uapi-group.org/specifications/: the Boot Loader Spefication
+ and the Discoverable Partitions Specification.
+
CHANGES WITH 252 🎃:
projects / thirdparty / systemd.git / commitdiff
