mirror of
https://github.com/systemd/systemd.git
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2359 lines
118 KiB
Plaintext
2359 lines
118 KiB
Plaintext
Bugfixes:
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* Many manager configuration settings that are only applicable to user
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manager or system manager can be always set. It would be better to reject
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them when parsing config.
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* Jun 01 09:43:02 krowka systemd[1]: Unit user@1000.service has alias user@.service.
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Jun 01 09:43:02 krowka systemd[1]: Unit user@6.service has alias user@.service.
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Jun 01 09:43:02 krowka systemd[1]: Unit user-runtime-dir@6.service has alias user-runtime-dir@.service.
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External:
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* Fedora: add an rpmlint check that verifies that all unit files in the RPM are listed in %systemd_post macros.
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* dbus:
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- natively watch for dbus-*.service symlinks (PENDING)
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- teach dbus to activate all services it finds in /etc/systemd/services/org-*.service
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* kernel: add device_type = "fb", "fbcon" to class "graphics"
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* /usr/bin/service should actually show the new command line
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* fedora: suggest auto-restart on failure, but not on success and not on coredump. also, ask people to think about changing the start limit logic. Also point people to RestartPreventExitStatus=, SuccessExitStatus=
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* neither pkexec nor sudo initialize environ[] from the PAM environment?
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* fedora: update policy to declare access mode and ownership of unit files to root:root 0644, and add an rpmlint check for it
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* register catalog database signature as file magic
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* zsh shell completion:
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- <command> <verb> -<TAB> should complete options, but currently does not
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- systemctl add-wants,add-requires
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- systemctl reboot --boot-loader-entry=
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* systemctl status should know about 'systemd-analyze calendar ... --iterations='
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* If timer has just OnInactiveSec=..., it should fire after a specified time
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after being started.
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* write blog stories about:
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- hwdb: what belongs into it, lsusb
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- enabling dbus services
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- how to make changes to sysctl and sysfs attributes
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- remote access
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- how to pass throw-away units to systemd, or dynamically change properties of existing units
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- testing with Harald's awesome test kit
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- auto-restart
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- how to develop against journal browsing APIs
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- the journal HTTP iface
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- non-cgroup resource management
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- dynamic resource management with cgroups
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- refreshed, longer missions statement
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- calendar time events
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- init=/bin/sh vs. "emergency" mode, vs. "rescue" mode, vs. "multi-user" mode, vs. "graphical" mode, and the debug shell
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- how to create your own target
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- instantiated apache, dovecot and so on
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- hooking a script into various stages of shutdown/rearly booot
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Regularly:
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* look for close() vs. close_nointr() vs. close_nointr_nofail()
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* check for strerror(r) instead of strerror(-r)
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* pahole
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* set_put(), hashmap_put() return values check. i.e. == 0 does not free()!
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* use secure_getenv() instead of getenv() where appropriate
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* link up selected blog stories from man pages and unit files Documentation= fields
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Janitorial Clean-ups:
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* rework mount.c and swap.c to follow proper state enumeration/deserialization
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semantics, like we do for device.c now
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* get rid of prefix_roota() and similar, only use chase_symlinks() and related
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calls instead.
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* get rid of basename() and replace by path_extract_filename()
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* Replace our fstype_is_network() with a call to libmount's mnt_fstype_is_netfs()?
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Having two lists is not nice, but maybe it's now worth making a dependency on
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libmount for something so trivial.
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Deprecations and removals:
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* Remove any support for booting without /usr pre-mounted in the initrd entirely.
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Update INITRD_INTERFACE.md accordingly.
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* 2019-10 – Remove POINTINGSTICK_CONST_ACCEL references from the hwdb, see #9573
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* remove cgrouspv1 support EOY 2023. As per
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https://lists.freedesktop.org/archives/systemd-devel/2022-July/048120.html
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and then rework cgroupsv2 support around fds, i.e. keep one fd per active
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unit around, and always operate on that, instead of cgroup fs paths.
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* drop support for kernels that lack ambient capabilities support (i.e. make
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4.3 new baseline). Then drop support for "!!" modifier for ExecStart= which
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is only supported for such old kernels.
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* drop support for kernels lacking memfd_create() (i.e. make 3.17 new
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baseline), then drop all pipe() based fallbacks.
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* drop support for getrandom()-less kernels. (GRND_INSECURE means once kernel
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5.6 becomes our baseline). See
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https://github.com/systemd/systemd/pull/24101#issuecomment-1193966468 for
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details. Maybe before that: at taint-flags/warn about kernels that lack
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getrandom()/environments where it is blocked.
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* drop support for LOOP_CONFIGURE-less loopback block devices, once kernel
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baseline is 5.8.
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* drop fd_is_mount_point() fallback mess once we can rely on
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STATX_ATTR_MOUNT_ROOT to exist i.e. kernel baseline 5.8
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* rework our PID tracking in services and so on, to be strictly based on pidfd,
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once kernel baseline is 5.13.
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* H2 2023: remove support for unmerged-usr
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* Remove /dev/mem ACPI FPDT parsing when /sys/firmware/acpi/fpdt is ubiquitous.
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That requires distros to enable CONFIG_ACPI_FPDT, and have kernels v5.12 for
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x86 and v6.2 for arm.
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Features:
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* split out execute.c into new "systemd-executor" binary. Then make PID 1 fork
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that off via vfork(), and then let that executor do the hard work. Ultimately
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the executor then gets replaced by the real binary sooner or later. Reason:
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currently the intermediary "stub" process is a CoW trap that doubles memory
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usage of PID 1 on each service start. Also, strictly speaking we are not
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allowed to do NSS from the stub process yet we do anyway. Next steps would
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then be maybe use CLONE_INTO_CGROUP for the executor, given that we don't
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need glibc anymore in the stub process then. Then, switch nspawn to just be a
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frontend for this too, so that we have to ways into the executor: via unit
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files/dbus/varlin through PID1 and via cmdline/OCI through nspawn.
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* sd-stub: detect if we are running with uefi console output on serial, and if so
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automatically add console= to kernel cmdline matching the same port.
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* add a utility that can be used with the kernel's
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CONFIG_STATIC_USERMODEHELPER_PATH and then handles them within pid1 so that
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security, resource management and cgroup settings can be enforced properly
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for all umh processes.
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* systemd-shutdown: keep sending sd_notify() status updates immediately before
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going down, in particular include the "reboot param" string.
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* homed: when resizing an fs don't sync identity beforehand there might simply
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not be enough disk space for that. try to be defensive and sync only after
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resize.
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* homed: if for some reason the partition ended up being much smaller than
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whole disk, recover from that, and grow it again.
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* in journald, write out a recognizable log record whenever the system clock is
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changed ("stepped"), and in timesyncd whenever we acquire an NTP fix
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("slewing"). Then, in journalctl for each boot time we come across, find
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these records, and use the structured info they include to display
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"corrected" wallclock time, as calculted from the monotonic timestamp in the
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log record, adjusted by the delta declared in the structured log record.
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* in journald: whenever we start a new journal file because the boot ID
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changed, let's generate a recognizable log record containing info about old
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and new new ID. Then, when displaying log stream in journalctl look for these
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records, to be able to order them.
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* timesyncd: when saving/restoring clock try to take boot time into account.
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Specifically, along with the saved clock, store the current boot ID. When
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starting, check if the boot id matches. If so, don't do anything (we are on
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the same boot and clock just kept running anyway). If not, then read
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CLOCK_BOOTTIME (which started at boot), and add it to the saved clock
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timestamp, to compensate for the time we spent booting. If EFI timestamps are
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available, also include that in the calculation. With this we'll then only
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miss the time spent during shutdown after timesync stopped and before the
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system actually reset.
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* systemd-stub: maybe store a "boot counter" in the ESP, and pass it down to
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userspace to allow ordering boots (for example in journalctl). The counter
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would be monotonically increased on every boot.
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* systemd-sysext: for sysext DDIs picked up via EFI stub, set much stricter
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image policy by default
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* systemd-dissect: maybe add "--attach" and "--detach" verbs which
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synchronously attach a DDI to a loopback device but not actually mount them.
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* pam_systemd_home: add module parameter to control whether to only accept
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only password or only pcks11/fido2 auth, and then use this to hook nicely
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into two of the three PAM stacks gdm provides.
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See discussion at https://github.com/authselect/authselect/pull/311
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* sd-boot: make boot loader spec type #1 accept http urls in "linux"
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lines. THen, do the uefi http dance to download kernels and boot them. This
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is then useful for network boot, by embdedding a cpio with type #1 snippets
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in sd-boot, which reference remote kernels.
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* fix systemd-gpt-auto-generator in case a UKI is spawned from XBOOTLDR without
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sd-boot. In that case LoaderDevicePartUUID will point to the XBOOTLDR, and we
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should then derive the root disk from that, and then the ESP/XBOOTLDR from
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that. Right now we will only mount ESP if it matches LoaderDEvicePartUUID
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which isn't quite the same.
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* maybe prohibit setuid() to the nobody user, to lock things down, via seccomp.
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the nobody is not a user any code should run under, ever, as that user would
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possibly get a lot of access to resources it really shouldn't be getting
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access to due to the userns + nfs semantics of the user. Alternatively: use
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the seccomp log action, and allow it.
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* sd-boot: add a new PE section .bls or so that carries a cpio with additional
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boot loader entries (both type1 and type2). Then when initializing, find this
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section, iterate through it and populate menu with it. cpio is simple enough
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to make a parser for this reasonably robust. use same path structures as in
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the ESP. Similar add one for signature key drop-ins.
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* sd-boot: also allow passing in the cpio as in the previous item via SMBIOS
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* add a new EFI tool "sd-fetch" or so. It looks in a PE section ".url" for an
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URL, then downloads the file from it using UEFI HTTP APIs, and executes it.
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Usecase: provide a minimal ESP with sd-boot and a couple of these sd-fetch
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binaries in place of UKIs, and download them on-the-fly.
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* bootctl: warn if ESP is mounted world-readable (and in particular the seed).
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* maybe: systemd-loop-generator that sets up loopback devices if requested via kernel
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cmdline. usecase: include encrypted/verity root fs in UKI.
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* systemd-gpt-auto-generator: add kernel cmdline option to override block
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device to dissect. also support dissecting a regular file. useccase: include
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encrypted/verity root fs in UKI.
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* sd-stub: add ".bootcfg" section for kernel bootconfig data (as per
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https://docs.kernel.org/admin-guide/bootconfig.html)
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* tpm2: add (optional) support for generating a local signing key from PCR 15
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state. use private key part to sign PCR 7+14 policies. stash signatures for
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expected PCR7+14 policies in EFI var. use public key part in disk encryption.
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generate new sigs whenever db/dbx/mok/mokx gets updated. that way we can
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securely bind against SecureBoot/shim state, without having to renroll
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everything on each update (but we still have to generate one sig on each
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update, but that should be robust/idempotent). needs rollback protection, as
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usual.
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* Lennart: big blog story about DDIs
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* Lennart: big blog story about building initrds
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* Lennart: big blog story about "why systemd-boot"
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* bpf: see if we can use BPF to solve the syslog message cgroup source problem:
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one idea would be to patch source sockaddr of all AF_UNIX/SOCK_DGRAM to
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implicitly contain the source cgroup id. Another idea would be to patch
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sendto()/connect()/sendmsg() sockaddr on-the-fly to use a different target
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sockaddr.
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* bpf: see if we can address opportunistic inode sharing of immutable fs images
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with BPF. i.e. if bpf gives us power to hook into openat() and return a
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different inode than is requested for which we however it has same contents
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then we can use that to implement opportunistic inode sharing among DDIs:
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make all DDIs ship xattr on all reg files with a SHA256 hash. Then, also
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dictate that DDIs should come with a top-level subdir where all reg files are
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linked into by their SHA256 sum. Then, whenever an inode is opened with the
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xattr set, check bpf table to find dirs with hashes for other prior DDIs and
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try to use inode from there.
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* extend the verity signature partition to permit multiple signatures for the
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same root hash, so that people can sign a single image with multiple keys.
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* consider adding a new partition type, just for /opt/ for usage in system
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extensions
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* gpt-auto-discovery: also use the pkcs7 signature stuff, and pass signature to
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kernel. So far we only did this for the various --image= switches, but not
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for the root fs or /usr/.
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* dissection policy should enforce that unlocking can only take place by
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certain means, i.e. only via pw, only via tpm2, or only via fido, or a
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combination thereof.
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* make the systemd-repart "seed" value provisionable via credentials, so that
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confidential computing environments can set it and deterministically
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enforce the uuids for partitions created, so that they can calculate PCR 15
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ahead of time.
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* systemd-repart: also derive the volume key from the seed value, for the
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aforementioned purpose.
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* in the initrd: derive the default machine ID to pass to the host PID 1 via
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$machine_id from the same seed credential.
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* Add systemd-sysupdate-initrd.service or so that runs systemd-sysupdate in the
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initrd to bootstrap the initrd to populate the initial partitions. Some things
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to figure out:
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- Should it run on firstboot or on every boot?
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- If run on every boot, should it use the sysupdate config from the host on
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subsequent boots?
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* hook up journald with TPMs? measure new journal records to the TPM in regular
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intervals, validate the journal against current TPM state with that. (taking
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inspiration from IMA log)
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* provide an API to apps to encrypt/decrypt credentials. usecase: allow
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bluez bluetooth daemon to pass pairings to initrd that way, without shelling
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out to our tools.
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* revisit default PCR bindings in cryptenroll and systemd-creds. Currently they
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use PCR 7 which should contain secureboot state db/dbx. Which sounded like a
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safe bet, given that it should change only on policy changes, and not
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software updates. But that's wrong. Recent fwupd (rightfully) contains code
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for updating the dbx denylist. This means even without any active policy
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change PCR 7 might change. Hence, better idea might be in systemd-creds to
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default to PCR 15 at least if sd-stub is used (i.e. bind to system identity),
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and in cryptsetup simply the empty list? Also, PCR 14 almost certainly should
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be included as much as PCR 7 (as it contains shim's policy, which is
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certainly as relevant as PCR 7 on many systems)
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* move discoverable partition spec and boot loader spec over to uapi group
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* maybe measure UUIDs of important mounted file systems (after mount, via the
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new ioctls to query them) into PCR 15? Add "x-systemd.measure-pcr=" or so for
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this that pulls in a per mount service?
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* measure /etc/machine-id during early boot into PCR 15?
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* To mimic the new tpm2-measure-pcr= crypttab option add the same to veritytab
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(measuring the root hash) and integritytab (measuring the HMAC key if one is
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used)
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* We should start measuring all services, containers, and system extensions we
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activate. probably into PCR 13. i.e. add --tpm2-measure-pcr= or so to
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systemd-nspawn, and MeasurePCR= to unit files. Should contain a measurement
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of the activated configuration and the image that is being activated (in case
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verity is used, hash of the root hash).
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* whenever we measure something into a TPM PCR from userspace, write a record in
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TCG's "Canonical Event Log" format to some file, so that we can reason about
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how PCR values we manage came to
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be. https://trustedcomputinggroup.org/resource/canonical-event-log-format/
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* bootspec: permit graceful "update" from type #2 to type #1. If both a type #1
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and a type #2 entry exist under otherwise the exact same name, then use the
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type #1 entry, and ignore the type #2 entry. This way, people can "upgrade"
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from the UKI with all parameters baked in to a Type #1 .conf file with manual
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parametrization, if needed. This matches our usual rule that admin config
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should win over vendor defaults.
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* sd-stub: optionally allow users to configure manual kernel command line even
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in SecureBoot by authenticating it via shim's APIs, integrating with MOK and
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similar: instead of authenticating just PE code shim should be capable of
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authenticating any kind of data for us, including files containing kernel
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command lines.
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* write a "search path" spec, that documents the prefixes to search in
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(i.e. the usual /etc/, /run/, /usr/lib/ dance, potentially /usr/etc/), how to
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sort found entries, how masking works and overriding.
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* automatic boot assessment: add one more default success check that just waits
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for a bit after boot, and blesses the boot if the system stayed up that long.
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* implement concept of "versioned" resources inside a dir, and write a spec for
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it. Make all tools in systemd, in particular
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RootImage=/RootDirectory=/--image=/--directory= implement this. Idea:
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directories ending in ".v/" indicate a directory with versioned resources in
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them. Versioned resources inside a .v dir are always named in the pattern
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<prefix>_<version>[+<tries-left>[-<tries-done>]].<suffix>
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* add support for using this .v/ logic on the root fs itself: in the initrd,
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after mounting the rootfs, look for root-<arch>.v/ in the root fs, and then
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apply the logic, moving the switch root logic there.
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* systemd-repart: add support for generating ISO9660 images
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* systemd-repart: in addition to the existing "factory reset" mode (which
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simply empties existing partitions marked for that). add a mode where
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partitions marked for it are entirely removed. Usecase: remove secondary OS
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copy, and redundant partitions entirely, and recreate them anew.
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* systemd-boot: maybe add support for collapsing menu entries of the same OS
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into one item that can be opened (like in a "tree view" UI element) or
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collapsed. If only a single OS is installed, disable this mode, but if
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multiple OSes are installed might make sense to default to it, so that user
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is not immediately bombarded with a multitude of Linux kernel versions but
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only one for each OS.
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||
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* systemd-repart: if the GPT *disk* UUID (i.e. the one global for the entire
|
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disk) is set to all FFFFF then use this as trigger for factory reset, in
|
||
addition to the existing mechanisms via EFI variables and kernel command
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line. Benefit: works also on non-EFI systems, and can be requested on one
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boot, for the next.
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* figure out a sane way when building UKIs how to extract SBAT data from inner
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kernel, extend it with component info, and add to outer kernel.
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* systemd-sysupdate: make transport pluggable, so people can plug casync or
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similar behind it, instead of http.
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* systemd-tmpfiles: add concept for conditionalizing lines on factory reset
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boot, or on first boot.
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* in UKIs: add way to define allowlist of additional words that can be added to
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the kernel cmdline even in SecureBoot mode
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||
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* we probably needs .pcrpkeyrd or so as additional PE section in UKIs,
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which contains a separate public key for PCR values that only apply in the
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||
initrd, i.e. in the boot phase "enter-initrd". Then, consumers in userspace
|
||
can easily bind resources to just the initrd. Similar, maybe one more for
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"enter-initrd:leave-initrd" for resources that shall be accessible only
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before unprivileged user code is allowed. (we only need this for .pcrpkey,
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not for .pcrsig, since the latter is a list of signatures anyway). With that,
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when you enroll a LUKS volume or similar, pick either the .pcrkey (for
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coverage through all phases of the boot, but excluding shutdown), the
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.pcrpkeyrd (for coverage in the initrd only) and .pcrpkeybt (for coverage
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until users are allowed to log in).
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* Once the root fs LUKS volume key is measured into PCR 15, default to binding
|
||
credentials to PCR 15 in "systemd-creds"
|
||
|
||
* add support for asymmetric LUKS2 TPM based encryption. i.e. allow preparing
|
||
an encrypted image on some host given a public key belonging to a specific
|
||
other host, so that only hosts possessing the private key in the TPM2 chip
|
||
can decrypt the volume key and activate the volume. Usecase: systemd-syscfg
|
||
for a central orchestrator to generate syscfg images securely that can only
|
||
be activated on one specific host (which can be used for installing a bunch
|
||
of creds in /etc/credstore/ for example). Extending on this: allow binding
|
||
LUKS2 TPM based encryption also to the TPM2 internal clock. Net result:
|
||
prepare a syscfg image that can only be activated on a specific host that
|
||
runs a specific software in a specific time window. syscfg would be
|
||
automatically invalidated outside of it.
|
||
|
||
* maybe add a "systemd-report" tool, that generates a TPM2-backed "report" of
|
||
current system state, i.e. a combination of PCR information, local system
|
||
time and TPM clock, running services, recent high-priority log
|
||
messages/coredumps, system load/PSI, signed by the local TPM chip, to form an
|
||
enhanced remote attestation quote. Usecase: a simple orchestrator could use
|
||
this: have the report tool upload these reports every 3min somewhere. Then
|
||
have the orchestrator collect these reports centrally over a 3min time
|
||
window, and use them to determine what which node should now start/stop what,
|
||
and generate a small syscfg for each node, that uses Uphold= to pin services
|
||
on each node. The syscfg would be encrypted using the asymmetric encryption
|
||
proposed above, so that it can only be activated on the specific host, if the
|
||
software is in a good state, and within a specific time frame. Then run a
|
||
loop on each node that sends report to orchestrator and then sysupdate to
|
||
update syscfg. Orchestrator would be stateless, i.e. operate on desired
|
||
config and collected reports in the last 3min time window only, and thus can
|
||
be trivially scaled up since all instances of the orchestrator should come to
|
||
the same conclusions given the same inputs of reports/desired workload info.
|
||
Could also be used to deliver Wireguard secrets and thus to clients, thus
|
||
permitting zero-trust networking: secrets are rolled over via syscfg updates,
|
||
and via the time window TPM logic invalidated if node doesn't keep itself
|
||
updated, or becomes corrupted in some way.
|
||
|
||
* in the initrd, once the rootfs encryption key has been measured to PCR 15,
|
||
derive default machine ID to use from it, and pass it to host PID 1.
|
||
|
||
* tree-wide: convert as much as possible over to use sd_event_set_signal_exit(), instead
|
||
of manually hooking into SIGINT/SIGTERM
|
||
|
||
* tree-wide: convert as much as possible over to SD_EVENT_SIGNAL_PROCMASK
|
||
instead of manual blocking.
|
||
|
||
* sd-boot: for each installed OS, grey out older entries (i.e. all but the
|
||
newest), to indicate they are obsolete
|
||
|
||
* automatically propagate LUKS password credential into cryptsetup from host
|
||
(i.e. SMBIOS type #11, …), so that one can unlock LUKS via VM hypervisor
|
||
supplied password.
|
||
|
||
* add ability to path_is_valid() to classify paths that refer to a dir from
|
||
those which may refer to anything, and use that in various places to filter
|
||
early. i.e. stuff ending in "/", "/." and "/.." definitely refers to a
|
||
directory, and paths ending that way can be refused early in many contexts.
|
||
|
||
* systemd-measure: allow operating with PEM certificates in addition to PEM
|
||
public keys when signing PCR values. SecureBoot and our Verity signatures
|
||
operate with certificates already, hence I guess we should also just deal for
|
||
convencience with certificates for the PCR stuff too.
|
||
|
||
* systemd-measure: add --pcrpkey-auto as an alternative to --pcrpkey=, where it
|
||
would just use the same public key specified with --public-key= (or the one
|
||
automatically derived from --private-key=).
|
||
|
||
* tmpfiles: add new line type for setting btrfs subvolume attributes (i.e. rw/ro)
|
||
|
||
* tmpfiles: add new line type for setting fcaps
|
||
|
||
* push people to use ".sysext.raw" as suffix for sysext DDIs (DDI =
|
||
discoverable disk images, i.e. the new name for gpt disk images following the
|
||
discoverable disk spec). [Also: just ".sysext/" for directory-based sysext]
|
||
|
||
* Add "purpose" flag to partition flags in discoverable partition spec that
|
||
indicate if partition is intended for sysext, for portable service, for
|
||
booting and so on. Then, when dissecting DDI allow specifying a purpose to
|
||
use as additional search condition. Usecase: images that combined a sysext
|
||
partition with a portable service partition in one.
|
||
|
||
* On boot, auto-generate an asymmetric key pair from the TPM,
|
||
and use it for validating DDIs and credentials. Maybe upload it to the kernel
|
||
keyring, so that the kernel does this validation for us for verity and kernel
|
||
modules
|
||
|
||
* for systemd-syscfg: add a tool that can generate suitable DDIs with verity +
|
||
sig using squashfs-tools-ng's library. Maybe just systemd-repart called under
|
||
a new name with a built-in config?
|
||
|
||
* gpt-auto: generate mount units that reference partitions via
|
||
/dev/disk/by-diskseq/… so that they can't be swapped out behind our back.
|
||
|
||
* lock down acceptable encrypted credentials at boot, via simple allowlist,
|
||
maybe on kernel command line:
|
||
systemd.import_encrypted_creds=foobar.waldo,tmpfiles.extra to protect locked
|
||
down kernels from credentials generated on the host with a weak kernel
|
||
|
||
* Add support for extra verity configuration options to systemd-repart (FEC,
|
||
hash type, etc)
|
||
|
||
* chase_symlinks(): take inspiration from path_extract_filename() and return
|
||
O_DIRECTORY if input path contains trailing slash.
|
||
|
||
* chase_symlinks(): refuse resolution if trailing slash is specified on input,
|
||
but final node is not a directory
|
||
|
||
* chase_symlinks(): add new flag that simply refuses all symlink use in a path,
|
||
then use that for accessing XBOOTLDR/ESP
|
||
|
||
* document in boot loader spec that symlinks in XBOOTLDR/ESP are not OK even if
|
||
non-VFAT fs is used.
|
||
|
||
* measure credentials picked up from SMBIOS to some suitable PCR
|
||
|
||
* measure GPT and LUKS headers somewhere when we use them (i.e. in
|
||
systemd-gpt-auto-generator/systemd-repart and in systemd-cryptsetup?)
|
||
|
||
* pick up creds from EFI vars
|
||
|
||
* sd-boot: we probably should include all BootXY EFI variable defined boot
|
||
entries in our menu, and then suppress ourselves. Benefit: instant
|
||
compatibility with all other OSes which register things there, in particular
|
||
on other disks. Always boot into them via NextBoot EFI variable, to not
|
||
affect PCR values.
|
||
|
||
* systemd-measure tool:
|
||
- pre-calculate PCR 12 (command line) + PCR 13 (sysext) the same way we can precalculate PCR 11
|
||
|
||
* in sd-boot: load EFI drivers from a new PE section. That way, one can have a
|
||
"supercharged" sd-boot binary, that could carry ext4 drivers built-in.
|
||
|
||
* sd-bus: document that sd_bus_process() only returns messages that non of the
|
||
filters/handlers installed on the connection took possession of.
|
||
|
||
* sd-device: add an API for acquiring list of child devices, given a device
|
||
objects (i.e. all child dirents that dirs or symlinks to dirs)
|
||
|
||
* sd-device: maybe pin the sysfs dir with an fd, during the entire runtime of
|
||
an sd_device, then always work based on that.
|
||
|
||
* add small wrapper around qemu that implements sd_notify/AF_VSOCK + machined and
|
||
maybe some other stuff and boots it
|
||
|
||
* maybe add new flags to gpt partition tables for rootfs and usrfs indicating
|
||
purpose, i.e. whether something is supposed to be bootable in a VM, on
|
||
baremetal, on an nspawn-style container, if it is a portable service image,
|
||
or a sysext for initrd, for host os, or for portable container. Then hook
|
||
portabled/… up to udev to watch block devices coming up with the flags set, and
|
||
use it.
|
||
|
||
* sd-boot should look for information what to boot in SMBIOS, too, so that VM
|
||
managers can tell sd-boot what to boot into and suchlike
|
||
|
||
* add "systemd-sysext identify" verb, that you can point on any file in /usr/
|
||
and that determines from which overlayfs layer it originates, which image, and with
|
||
what it was signed.
|
||
|
||
* journald: generate recognizable log events whenever we shutdown journald
|
||
cleanly, and when we migrate run → var. This way tools can verify that a
|
||
previous boot terminated cleanly, because either of these two messages must
|
||
be safely written to disk, then.
|
||
|
||
* systemd-creds: extend encryption logic to support asymmetric
|
||
encryption/authentication. Idea: add new verb "systemd-creds public-key"
|
||
which generates a priv/pub key pair on the TPM2 and stores the priv key
|
||
locally in /var. It then outputs a certificate for the pub part to stdout.
|
||
This can then be copied/taken elsewhere, and can be used for encrypting creds
|
||
that only the host on its specific hw can decrypt. Then, support a drop-in
|
||
dir with certificates that can be used to authenticate credentials. Flow of
|
||
operations is then this: build image with owner certificate, then after
|
||
boot up issue "systemd-creds public-key" to acquire pubkey of the machine.
|
||
Then, when passing data to the machine, sign with privkey belonging to one of
|
||
the dropped in certs and encrypted with machine pubkey, and pass to machine.
|
||
Machine is then able to authenticate you, and confidentiality is guaranteed.
|
||
|
||
* building on top of the above, the pub/priv key pair generated on the TPM2
|
||
should probably also one you can use to get a remote attestation quote.
|
||
|
||
* bootctl: add "gc" verb that loads all type #1 .conf files, and then removes
|
||
all files from the set of files from the ESP/XBOOTLDR matching the entry
|
||
token that are not referenced by any. Then, change kernel-install to use only
|
||
this to remove auxiliary files, and never remove them explicitly. Benefit:
|
||
resources such as initrds/kernels/dtb can be shared between entries.
|
||
|
||
* Process credentials in:
|
||
• networkd/udevd: add a way to define additional .link, .network, .netdev files
|
||
via the credentials logic.
|
||
• fstab-generator: allow defining additional fstab-like mounts via
|
||
credentials (similar: crypttab-generator, verity-generator,
|
||
integrity-generator)
|
||
• getty-generator: allow defining additional getty instances via a credential
|
||
• run-generator: allow defining additional commands to run via a credential
|
||
• resolved: allow defining additional /etc/hosts entries via a credential (it
|
||
might make sense to then synthesize a new combined /etc/hosts file in /run
|
||
and bind mount it on /etc/hosts for other clients that want to read it.
|
||
• repart: allow defining additional partitions via credential
|
||
• timesyncd: pick NTP server info from credential
|
||
• portabled: read a credential "portable.extra" or so, that takes a list of
|
||
file system paths to enable on start.
|
||
• make systemd-fstab-generator look for a system credential encoding root= or
|
||
usr=
|
||
• systemd-homed: when initializing, look for a credential
|
||
systemd.homed.register or so with JSON user records to automatically
|
||
register if not registered yet. Usecase: deploy a system, and add an
|
||
account one can directly log into.
|
||
• initialize machine ID from systemd credential picked up from the ESP via
|
||
sd-stub, so that machine ID is stable even on systems where unified kernels
|
||
are used, and hence kernel cmdline cannot be modified locally
|
||
• in gpt-auto-generator: check partition uuids against such uuids supplied via
|
||
sd-stub credentials. That way, we can support parallel OS installations with
|
||
pre-built kernels.
|
||
|
||
* define a JSON format for units, separating out unit definitions from unit
|
||
runtime state. Then, expose it:
|
||
|
||
1. Add Describe() method to Unit D-Bus object that returns a JSON object
|
||
about the unit.
|
||
2. Expose this natively via Varlink, in similar style
|
||
3. Use it when invoking binaries (i.e. make PID 1 fork off systemd-executor
|
||
binary which reads the JSON definition and runs it), to address the cow
|
||
trap issue and the fact that NSS is actually forbidden in
|
||
forked-but-not-exec'ed children
|
||
4. Add varlink API to run transient units based on provided JSON definitions
|
||
|
||
* Add SUPPORT_END_URL= field to os-release with more *actionable* information
|
||
what to do if support ended
|
||
|
||
* pam_systemd: on interactive logins, maybe show SUPPORT_END information at
|
||
login time, á la motd
|
||
|
||
* sd-boot: instead of unconditionally deriving the ESP to search boot loader
|
||
spec entries in from the paths of sd-boot binary, let's optionally allow it
|
||
to be configured on sd-boot cmdline + efi var. Usecase: embed sd-boot in the
|
||
UEFI firmware (for example, ovmf supports that via qemu cmdline option), and
|
||
use it to load stuff from the ESP.
|
||
|
||
* mount /var/ from initrd, so that we can apply sysext and stuff before the
|
||
initrd transition. Specifically:
|
||
1. There should be a var= kernel cmdline option, matching root= and usr=
|
||
2. systemd-gpt-auto-generator should auto-mount /var if it finds it on disk
|
||
3. mount.x-initrd mount option in fstab should be implied for /var
|
||
|
||
* implement varlink introspection
|
||
|
||
* we should probably drop all use of prefix_roota() and friends, and use
|
||
chase_symlinks() instead
|
||
|
||
* make persistent restarts easier by adding a new setting OpenPersistentFile=
|
||
or so, which allows opening one or more files that is "persistent" across
|
||
service restarts, hot reboot, cold reboots (depending on configuration): the
|
||
files are created empty on first invocation, and on subsequent invocations
|
||
the files are reboot. The files would be backed by tmpfs, pmem or /var
|
||
depending on desired level of persistency.
|
||
|
||
* sd-event: add ability to "chain" event sources. Specifically, add a call
|
||
sd_event_source_chain(x, y), which will automatically enable event source y
|
||
in oneshit mode once x is triggered. Use case: in src/core/mount.c implement
|
||
the /proc/self/mountinfo rescan on SIGCHLD with this: whenever a SIGCHLD is
|
||
seen, trigger the rescan defer event source automatically, and allow it to be
|
||
dispatched *before* the SIGCHLD is handled (based on priorities). Benefit:
|
||
dispatch order is strictly controlled by priorities again. (next step: chain
|
||
event sources to the ratelimit being over)
|
||
|
||
* if we fork of a service with StandardOutput=journal, and it forks off a
|
||
subprocess that quickly dies, we might not be able to identify the cgroup it
|
||
comes from, but we can still derive that from the stdin socket its output
|
||
came from. We apparently don't do that right now.
|
||
|
||
* add ability to set hostname with suffix derived from machine id at boot
|
||
|
||
* add PR_SET_DUMPABLE service setting
|
||
|
||
* homed/userdb: maybe define a "companion" dir for home directories where apps
|
||
can safely put privileged stuff in. Would not be writable by the user, but
|
||
still conceptually belong to the user. Would be included in user's quota if
|
||
possible, even if files are not owned by UID of user. Usecase: container
|
||
images that owned by arbitrary UIDs, and are owned/managed by the users, but
|
||
are not directly belonging to the user's UID. Goal: we shouldn't place more
|
||
privileged dirs inside of unprivileged dirs, and thus containers really
|
||
should not be placed inside of traditional UNIX home dirs (which are owned by
|
||
users themselves) but somewhere else, that is separate, but still close
|
||
by. Inform user code about path to this companion dir via env var, so that
|
||
container managers find it. the ~/.identity file is also a candidate for a
|
||
file to move there, since it is managed by privileged code (i.e. homed) and
|
||
not unprivileged code.
|
||
|
||
* given that /etc/ssh/ssh_config.d/ is a thing now, ship a drop-in for that
|
||
that hooks up userbdctl ssh-key stuff.
|
||
|
||
* maybe add support for binding and connecting AF_UNIX sockets in the file
|
||
system outside of the 108ch limit. When connecting, open O_PATH fd to socket
|
||
inode first, then connect to /proc/self/fd/XYZ. When binding, create symlink
|
||
to target dir in /tmp, and bind through it.
|
||
|
||
* add a proper concept of a "developer" mode, i.e. where cryptographic
|
||
protections of the root OS are weakened after interactive confirmation, to
|
||
allow hackers to allow their own stuff. idea: allow entering developer mode
|
||
only via explicit choice in boot menu: i.e. add explicit boot menu item for
|
||
it. when developer mode is entered generate a key pair in the TPM2, and add
|
||
the public part of it automatically to keychain of valid code signature keys
|
||
on subsequent boots. Then provide a tool to sign code with the key in the
|
||
TPM2. Ensure that boot menu item is only way to enter developer mode, by
|
||
binding it to locality/PCRs so that that keys cannot be generated otherwise.
|
||
|
||
* services: add support for cryptographically unlocking per-service directories
|
||
via TPM2. Specifically, for StateDirectory= (and related dirs) use fscrypt to
|
||
set up the directory so that it can only be accessed if host and app are in
|
||
order.
|
||
|
||
* TPM2: extend unlock policy to protect against version downgrades in signed
|
||
policies: policy probably must take some nvram based generation counter into
|
||
account that can only monotonically increase and can be used to invalidate
|
||
old PCR signatures. Otherwise people could downgrade to old signed PCR sets
|
||
whenever they want.
|
||
|
||
* update HACKING.md to suggest developing systemd with the ideas from:
|
||
https://0pointer.net/blog/testing-my-system-code-in-usr-without-modifying-usr.html
|
||
https://0pointer.net/blog/running-an-container-off-the-host-usr.html
|
||
|
||
* add a clear concept how the initrd can make up credentials on their own to
|
||
pass to the system when transitioning into the host OS. usecase: things like
|
||
cloud-init/ignitation and similar can parameterize the host with data they
|
||
acquire.
|
||
|
||
* sd-event: compat wd reuse in inotify code: keep a set of removed watch
|
||
descriptors, and clear this set piecemeal when we see the IN_IGNORED event
|
||
for it, or when read() returns EAGAIN or on IN_Q_OVERFLOW. Then, whenever we
|
||
see an inotify wd event check against this set, and if it is contained ignore
|
||
the event. (to be fully correct this would have to count the occurrences, in
|
||
case the same wd is reused multiple times before we start processing
|
||
IN_IGNORED again)
|
||
|
||
* systemd-fstab-generator: support addition mount specifications via kernel
|
||
cmdline. Usecase: invoke a VM, and mount a host homedir into it via
|
||
virtio-fs.
|
||
|
||
* for vendor-built signed initrds:
|
||
- make sysext run in the initrd
|
||
- sysext should pick up sysext images from /.extra/ in the initrd, and insist
|
||
on verification if in secureboot mode
|
||
- kernel-install should be able to install pre-built unified kernel images in
|
||
type #2 drop-in dir in the ESP.
|
||
- kernel-install should be able install encrypted creds automatically for
|
||
machine id, root pw, rootfs uuid, resume partition uuid, and place next to
|
||
EFI kernel, for sd-stub to pick them up. These creds should be locked to
|
||
the TPM, and bind to the right PCR the kernel is measured to.
|
||
- kernel-install should be able to pick up initrd sysexts automatically and
|
||
place them next to EFI kernel, for sd-stub to pick them up.
|
||
- systemd-fstab-generator should look for rootfs device to mount in creds
|
||
- pid 1 should look for machine ID in creds
|
||
- systemd-resume-generator should look for resume partition uuid in creds
|
||
- sd-stub: automatically pick up microcode from ESP (/loader/microcode/*)
|
||
and synthesize initrd from it, and measure it. Signing is not necessary, as
|
||
microcode does that on its own. Pass as first initrd to kernel.
|
||
|
||
* Maybe extend the service protocol to support handling of some specific SIGRT
|
||
signal for setting service log level, that carries the level via the
|
||
sigqueue() data parameter. Enable this via unit file setting.
|
||
|
||
* firstboot: maybe just default to C.UTF-8 locale if nothing is set, so that we
|
||
don't query this unnecessarily in entirely uninitialized
|
||
containers. (i.e. containers with empty /etc).
|
||
|
||
* sd_notify/vsock: maybe support binding to AF_VSOCK in Type=notify services,
|
||
then passing $NOTIFY_SOCKET and $NOTIFY_GUESTCID with PID1's cid (typically
|
||
fixed to "2", i.e. the official host cid) and the expected guest cid, for the
|
||
two sides of the channel. The latter env var could then be used in an
|
||
appropriate qemu cmdline. That way qemu payloads could talk sd_notify()
|
||
directly to host service manager.
|
||
|
||
* maybe write a tool that binds an AF_VFSOCK socket, then invokes qemu,
|
||
extending the command line to enable vsock on the VM, and using fw_cfg to
|
||
configure socket address.
|
||
|
||
* sd-boot: add menu item for shutdown? or hotkey?
|
||
|
||
* sd-device has an API to create an sd_device object from a device id, but has
|
||
no api to query the device id
|
||
|
||
* sd-device should return the devnum type (i.e. 'b' or 'c') via some API for an
|
||
sd_device object, so that data passed into sd_device_new_from_devnum() can
|
||
also be queried.
|
||
|
||
* sd-event: optionally, if per-event source rate limit is hit, downgrade
|
||
priority, but leave enabled, and once ratelimit window is over, upgrade
|
||
priority again. That way we can combat event source starvation without
|
||
stopping processing events from one source entirely.
|
||
|
||
* sd-event: similar to existing inotify support add fanotify support (given
|
||
that apparently new features in this area are only going to be added to the
|
||
latter).
|
||
|
||
* sd-event: add 1st class event source for clock changes
|
||
|
||
* sd-event: add 1st class event source for timezone changes
|
||
|
||
* support uefi/http boots with sd-boot: instead of looking for dropin files in
|
||
/loader/entries/ dir, look for a file /loader/entries/SHA256SUMS and use that
|
||
as directory manifest. The file would be a standard directory listing as
|
||
generated by GNU sha256sums.
|
||
|
||
* sd-boot: maybe add support for embedding the various auxiliary resources we
|
||
look for right in the sd-boot binary. i.e. take inspiration from sd-stub
|
||
logic: allow combining sd-boot via objcopy with kernels to enumerate, .conf
|
||
files, drivers, keys to enroll and so on. Then, add whatever we find that way
|
||
to the menu. Usecase: allow building a single PE image you can boot into via
|
||
UEFI HTTP boot.
|
||
|
||
* maybe add a new UEFI stub binary "sd-http". It works similar to sd-stub, but
|
||
all it does is download a file from a http server, and execute it, after
|
||
optionally checking its hash sum. idea would be: combine this "sd-http" stub
|
||
binary with some minimal info about an URL + hash sum, plus .osrel data, and
|
||
drop it into the unified kernel dir in the ESP. And bam you have something
|
||
that is tiny, feels a lot like a unified kernel, but all it does is chainload
|
||
the real kernel. benefit: downloading these stubs would be tiny and quick,
|
||
hence cheap for enumeration.
|
||
|
||
* sysext: measure all activated sysext into a TPM PCR
|
||
|
||
* maybe add a "syscfg" concept, that is almost entirely identical to "sysext",
|
||
but operates on /etc/ instead of /usr/ and /opt/. Use case would be: trusted,
|
||
authenticated, atomic, additive configuration management primitive: drop in a
|
||
configuration bundle, and activate it, so that it is instantly visible,
|
||
comprehensively.
|
||
|
||
* systemd-dissect: show available versions inside of a disk image, i.e. if
|
||
multiple versions are around of the same resource, show which ones. (in other
|
||
words: show partition labels).
|
||
|
||
* maybe add a generator that reads /proc/cmdline, looks for
|
||
systemd.pull-raw-portable=, systemd-pull-raw-sysext= and similar switches
|
||
that take an URL as parameter. It then generates service units for
|
||
systemd-pull calls that download these URLs if not installed yet. usecase:
|
||
invoke a VM or nspawn container in a way it automatically deploys/runs these
|
||
images as OS payloads. i.e. have a generic OS image you can point to any
|
||
payload you like, which is then downloaded, securely verified and run.
|
||
|
||
* improve scope units to support creation by pidfd instead of by PID
|
||
|
||
* deprecate cgroupsv1 further (print log message at boot)
|
||
|
||
* systemd-dissect: add --cat switch for dumping files such as /etc/os-release
|
||
|
||
* per-service sandboxing option: ProtectIds=. If used, will overmount
|
||
/etc/machine-id and /proc/sys/kernel/random/boot_id with synthetic files, to
|
||
make it harder for the service to identify the host. Depending on the user
|
||
setting it should be fully randomized at invocation time, or a hash of the
|
||
real thing, keyed by the unit name or so. Of course, there are other ways to
|
||
get these IDs (e.g. journal) or similar ids (e.g. MAC addresses, DMI ids, CPU
|
||
ids), so this knob would only be useful in combination with other lockdown
|
||
options. Particularly useful for portable services, and anything else that
|
||
uses RootDirectory= or RootImage=. (Might also over-mount
|
||
/sys/class/dmi/id/*{uuid,serial} with /dev/null).
|
||
|
||
* journalctl/timesyncd: whenever timesyncd acquires a synchronization from NTP,
|
||
create a structured log entry that contains boot ID, monotonic clock and
|
||
realtime clock (I mean, this requires no special work, as these three fields
|
||
are implicit). Then in journalctl when attempting to display the realtime
|
||
timestamp of a log entry, first search for the closest later log entry
|
||
of this kinda that has a matching boot id, and convert the monotonic clock
|
||
timestamp of the entry to the realtime clock using this info. This way we can
|
||
retroactively correct the wallclock timestamps, in particular for systems
|
||
without RTC, i.e. where initially wallclock timestamps carry rubbish, until
|
||
an NTP sync is acquired.
|
||
|
||
* kernel-install:
|
||
- add --all switch for rerunning kernel-install for all installed kernels
|
||
- maybe add env var that shortcuts kernel-install for installers that want to
|
||
call it at the end only
|
||
|
||
* doc: prep a document explaining resolved's internal objects, i.e. Query
|
||
vs. Question vs. Transaction vs. Stream and so on.
|
||
|
||
* doc: prep a document explaining PID 1's internal logic, i.e. transactions,
|
||
jobs, units
|
||
|
||
* bootspec: bring UEFI and userspace enumeration of bootspec entries back into
|
||
sync, i.e. parse out architecture field in sd-boot (currently only done in
|
||
userspace)
|
||
|
||
* automatically ignore threaded cgroups in cg_xyz().
|
||
|
||
* add linker script that implicitly adds symbol for build ID and new coredump
|
||
json package metadata, and use that when logging
|
||
|
||
* Enable RestrictFileSystems= for all our long-running services (similar:
|
||
RestrictNetworkInterfaces=)
|
||
|
||
* Add systemd-analyze security checks for RestrictFileSystems= and
|
||
RestrictNetworkInterfaces=
|
||
|
||
* cryptsetup/homed: implement TOTP authentication backed by TPM2 and its
|
||
internal clock.
|
||
|
||
* man: rework os-release(5), and clearly separate our extension-release.d/ and
|
||
initrd-release parts, i.e. list explicitly which fields are about what.
|
||
|
||
* sysext: before applying a sysext, do a superficial validation run so that
|
||
things are not rearranged to wildy. I.e. protect against accidental fuckups,
|
||
such as masking out /usr/lib/ or so. We should probably refuse if existing
|
||
inodes are replaced by other types of inodes or so.
|
||
|
||
* userdb: when synthesizing NSS records, pick "best" password from defined
|
||
passwords, not just the first. i.e. if there are multiple defined, prefer
|
||
unlocked over locked and prefer non-empty over empty.
|
||
|
||
* maybe add a tool inspired by the GPT auto discovery spec that runs in the
|
||
initrd and rearranges the rootfs hierarchy via bind mounts, if
|
||
enabled. Specifically in some top-level dir /@auto/ it will look for
|
||
dirs/symlinks/subvolumes that are named after their purpose, and optionally
|
||
encode a version as well as assessment counters, and then mount them into the
|
||
file system tree to boot into, similar to how we do that for the gpt auto
|
||
logic. Maybe then bind mount the original root into /.superior or something
|
||
like that (so that update tools can look there). Further discussion in this
|
||
thread:
|
||
https://lists.freedesktop.org/archives/systemd-devel/2021-November/047059.html
|
||
The GPT dissection logic should automatically enable this tool whenever we
|
||
detect a specially marked root fs (i.e introduce a new generic root gpt type
|
||
for this, that is arch independent). The also implement this in the image
|
||
dissection logic, so that nspawn/RootImage= and so on grok it. Maybe make
|
||
generic enough so that it can also work for ostrees arrangements.
|
||
|
||
* if a path ending in ".auto.d/" is set for RootDirectory=/RootImage= then do a
|
||
strverscmp() of everything inside that dir and use that. i.e. implement very
|
||
simple version control. Also use this in systemd-nspawn --image= and so on.
|
||
|
||
* homed: while a home dir is not activated generate slightly different NSS
|
||
records for it, that reports the home dir as "/" and the shell as some binary
|
||
provided by us. Then, when an SSH login happens and SSH permits it our binary
|
||
is invoked. This binary can then talk to homed and activate the homedir if
|
||
it's not around yet, prompting the user for a password. Once that succeeded
|
||
we'll switch to the real user record, i.e. home dir and shell, and our tool
|
||
exec()s the latter. Net effect: ssh'ing into a homed account will just work:
|
||
we'll neatly prompt for the homedir's password if its needed. –– Building on
|
||
this we could take this even further: since this tool will potentially have
|
||
access to the client's ssh-agent (if ssh-agent forwarding is enabled) we
|
||
could implement SSH unlocking of a homedir with that: when enrolling a new
|
||
ssh pubkey in a user record we'd ask the ssh-agent to sign some random value
|
||
with the privkey, then use that as luks key to unlock the home dir. Will not
|
||
work for ECDSA keys since their signatures contain a random component, but
|
||
will work for RSA and Ed25519 keys.
|
||
|
||
* add tiny service that decrypts encrypted user records passed via initrd
|
||
credential logic and drops them into /run where nss-systemd can pick them up,
|
||
similar to /run/host/userdb/. Usecase: drop a root user JSON record there,
|
||
and use it in the initrd to log in as root with locally selected password,
|
||
for debugging purposes. Other usecase: boot into qemu with regular user
|
||
mounted from host. maybe put this in systemd-user-sessions.service?
|
||
|
||
* drop dependency on libcap, replace by direct syscalls based on
|
||
CapabilityQuintet we already have. (This likely allows us drop drop libcap
|
||
dep in the base OS image)
|
||
|
||
* sysext: automatically activate sysext images dropped in via new sd-stub
|
||
sysext pickup logic. (must insist on verity + signature on those though)
|
||
|
||
* add concept for "exitrd" as inverse of "initrd", that we can transition to at
|
||
shutdown, and has similar security semantics. This should then take the place
|
||
of dracut's shutdown logic. Should probably support sysexts too. Care needs
|
||
to be taken that the resulting logic ends up in RAM, i.e. is copied out of
|
||
on-disk storage.
|
||
|
||
* userdbd: implement an additional varlink service socket that provides the
|
||
host user db in restricted form, then allow this to be bind mounted into
|
||
sandboxed environments that want the host database in minimal form. All
|
||
records would be stripped of all meta info, except the basic UID/name
|
||
info. Then use this in portabled environments that do not use PrivateUsers=1.
|
||
|
||
* portabled: when extracting unit files and copying to system.attached, if a
|
||
.p7s is available in the image, use it to protect the system.attached copy
|
||
with fs-verity, so that it cannot be tampered with
|
||
|
||
* logind introduce two types of sessions: "heavy" and "light". The former would
|
||
be our current sessions. But the latter would be a new type of session that
|
||
is mostly the same but does not pull in user@.service or wait for it. Then,
|
||
allow configuration which type of session is desired via pam_systemd
|
||
parameters, and then make user@.service's session one of these "light" ones.
|
||
People could then choose to make FTP sessions and suchlike "light" if they
|
||
don't want the service manager to be started for that.
|
||
|
||
* /etc/veritytab: allow that the roothash column can be specified as fs path
|
||
including a path to an AF_UNIX path, similar to how we do things with the
|
||
keys of /etc/crypttab. That way people can store/provide the roothash
|
||
externally and provide to us on demand only.
|
||
|
||
* add high-level lockdown level for GPT dissection logic: e.g. an enum that can
|
||
be ANY (to mount anything), TRUSTED (to require that /usr is on signed
|
||
verity, but rest doesn't matter), LOCKEDDOWN (to require that everything is
|
||
on signed verity, except for ESP), SUPERLOCKDOWN (like LOCKEDDOWN but ESP not
|
||
allowed). And then maybe some flavours of that that declare what is expected
|
||
from home/srv/var… Then, add a new cmdline flag to all tools that parse such
|
||
images, to configure this. Also, add a kernel cmdline option for this, to be
|
||
honoured by the gpt auto generator.
|
||
|
||
Alternative idea: add "systemd.gpt_auto_policy=rhvs" to allow gpt-auto to
|
||
only mount root dir, /home/ dir, /var/ and /srv/, but nothing else. And then
|
||
minor extension to this, insisting on encryption, for example
|
||
"systemd.gpt_auto_policy=r+v+h" to require encryption for root and var but not
|
||
for /home/, and similar. Similar add --image-dissect-policy= to tools that
|
||
take --image= that take the same short string.
|
||
|
||
* we probably should extend the root verity hash of the root fs into some PCR
|
||
on boot. (i.e. maybe add a veritytab option tpm2-measure=12 or so to measure
|
||
it into PCR 12); Similar: we probably should extend the LUKS volume key of
|
||
the root fs into some PCR on boot. (i.e. maybe add a crypttab option
|
||
tpm2-measure=15 or so to measure it into PCR 15); once both are in place
|
||
update gpt-auto-discovery to generate these by default for the partitions it
|
||
discovers. Static vendor stuff should probably end up in PCR 12 (i.e. the
|
||
verity hash), with local keys in PCR 15 (i.e. the encryption volume
|
||
key). That way, we nicely distinguish resources supplied by the OS vendor
|
||
(i.e. sysext, root verity) from those inherently local (i.e. encryption key),
|
||
which is useful if they shall be signed separately.
|
||
|
||
* add a "policy" to the dissection logic. i.e. a bit mask what is OK to mount,
|
||
what must be read-only, what requires encryption, and what requires
|
||
authentication.
|
||
|
||
* in uefi stub: query firmware regarding which PCR banks are being used, store
|
||
that in EFI var. then use this when enrolling TPM2 in cryptsetup to verify
|
||
that the selected PCRs actually are used by firmware.
|
||
|
||
* rework recursive read-only remount to use new mount API
|
||
|
||
* PAM: pick up authentication token from credentials
|
||
|
||
* when mounting disk images: if IMAGE_ID/IMAGE_VERSION is set in os-release
|
||
data in the image, make sure the image filename actually matches this, so
|
||
that images cannot be misused.
|
||
|
||
* New udev block device symlink names:
|
||
/dev/disk/by-parttypelabel/<pttype>-<ptlabel>. Use case: if pt label is used
|
||
as partition image version string, this is a safe way to reference a specific
|
||
version of a specific partition type, in particular where related partitions
|
||
are processed (e.g. verity + rootfs both named "LennartOS_0.7").
|
||
|
||
* sysupdate:
|
||
- add fuzzing to the pattern parser
|
||
- support casync as download mechanism
|
||
- "systemd-sysupdate update --all" support, that iterates through all components
|
||
defined on the host, plus all images installed into /var/lib/machines/,
|
||
/var/lib/portable/ and so on.
|
||
- figure out what to do about system extensions (i.e. they need to imply an
|
||
update component, since otherwise system extenion' sysupdate.d/ files would
|
||
override the host's update files.)
|
||
- Allow invocation with a single transfer definition, i.e. with
|
||
--definitions= pointing to a file rather than a dir.
|
||
- add ability to disable implicit decompression of downloaded artifacts,
|
||
i.e. a Compress=no option in the transfer definitions
|
||
|
||
* in sd-id128: also parse UUIDs in RFC4122 URN syntax (i.e. chop off urn:uuid: prefix)
|
||
|
||
* DynamicUser= + StateDirectory= → use uid mapping mounts, too, in order to
|
||
make dirs appear under right UID.
|
||
|
||
* systemd-sysext: optionally, run it in initrd already, before transitioning
|
||
into host, to open up possibility for services shipped like that.
|
||
|
||
* maybe add a tool that displays most recent journal logs as QR code to scan
|
||
off screen and run it automatically on boot failures, emergency logs and
|
||
such. Use DRM APIs directly, see
|
||
https://github.com/dvdhrm/docs/blob/master/drm-howto/modeset.c for an example
|
||
for doing that.
|
||
|
||
* introduce /dev/disk/root/* symlinks that allow referencing partitions on the
|
||
disk the rootfs is on in a reasonably secure way. (or maybe: add
|
||
/dev/gpt-auto-{home,srv,boot,…} similar in style to /dev/gpt-auto-root as we
|
||
already have it.
|
||
|
||
* whenever we receive fds via SCM_RIGHTS make sure none got dropped due to the
|
||
reception limit the kernel silently enforces.
|
||
|
||
* add an Open= setting to service unit files that can open arbitrary file
|
||
system paths at service startup time and pass them to the service process via
|
||
our usual socket activation protocol. If passed path refers to AF_UNIX
|
||
socket: connect() to it.
|
||
|
||
* Similar, ConnectStream= which takes IP addresses and connects to them.
|
||
|
||
* Similar, Load= which takes literal data in text or base64 format, and puts it
|
||
into a memfd, and passes that. This enables some fun stuff, such as embedding
|
||
bash scripts in unit files, by combining Load= with ExecStart=/bin/bash
|
||
/proc/self/fd/3
|
||
|
||
* add a ConnectSocket= setting to service unit files, that may reference a
|
||
socket unit, and which will connect to the socket defined therein, and pass
|
||
the resulting fd to the service program via socket activation proto.
|
||
|
||
* Add a concept of ListenStream=anonymous to socket units: listen on a socket
|
||
that is deleted in the fs. Usecase would be with ConnectSocket= above.
|
||
|
||
* importd: support image signature verification with PKCS#7 + OpenBSD signify
|
||
logic, as alternative to crummy gpg
|
||
|
||
* add "systemd-analyze debug" + AttachDebugger= in unit files: The former
|
||
specifies a command to execute; the latter specifies that an already running
|
||
"systemd-analyze debug" instance shall be contacted and execution paused
|
||
until it gives an OK. That way, tools like gdb or strace can be safely be
|
||
invoked on processes forked off PID 1.
|
||
|
||
* expose MS_NOSYMFOLLOW in various places
|
||
|
||
* credentials system:
|
||
- acquire from EFI variable?
|
||
- acquire via via ask-password?
|
||
- acquire creds via keyring?
|
||
- pass creds via keyring?
|
||
- pass creds via memfd?
|
||
- acquire + decrypt creds from pkcs11?
|
||
- make systemd-cryptsetup acquire pw via creds logic
|
||
- make PAMName= acquire pw via creds logic
|
||
- make macsec/wireguard code in networkd read key via creds logic
|
||
- make gatwayd/remote read key via creds logic
|
||
- add sd_notify() command for flushing out creds not needed anymore
|
||
- make user manager instances create and use a user-specific key (the one in
|
||
/var/lib is root-only) and add --user switch to systemd-creds to use it
|
||
|
||
* add tpm.target or so which is delayed until TPM2 device showed up in case
|
||
firmware indicates there is one.
|
||
|
||
* TPM2: auto-reenroll in cryptsetup, as fallback for hosed firmware upgrades
|
||
and such
|
||
|
||
* introduce a new group to own TPM devices
|
||
|
||
* cyptsetup: add option for automatically removing empty password slot on boot
|
||
|
||
* cryptsetup: optionally, when run during boot-up and password is never
|
||
entered, and we are on battery power (or so), power off machine again
|
||
|
||
* cryptsetup: when waiting for FIDO2/PKCS#11 token, tell plymouth that, and
|
||
allow plymouth to abort the waiting and enter pw instead
|
||
|
||
* make cryptsetup lower --iter-time
|
||
|
||
* cryptsetup: allow encoding key directly in /etc/crypttab, maybe with a
|
||
"base64:" prefix. Useful in particular for pkcs11 mode.
|
||
|
||
* cryptsetup: reimplement the mkswap/mke2fs in cryptsetup-generator to use
|
||
systemd-makefs.service instead.
|
||
|
||
* cryptsetup:
|
||
- cryptsetup-generator: allow specification of passwords in crypttab itself
|
||
- support rd.luks.allow-discards= kernel cmdline params in cryptsetup generator
|
||
|
||
* when configuring loopback netif, and it fails due to EPERM, eat up error if
|
||
it happens to be set up alright already.
|
||
|
||
* at boot: check if battery above some threshold, if not power off again after explanation
|
||
|
||
* userdb: add field for ambient caps, so that a user can have CAP_WAKE_ALARM
|
||
for example. And add code that resets ambient caps for all services by
|
||
default.
|
||
|
||
* sd-bus: when connecting to some dbus server socker, set originating AF_UNIX
|
||
socket name in abstract namespace to include "description" string, and pick
|
||
it up from there in sd_bus_creds logic. i.e. we can use the socket peer
|
||
address as conduit for some minimal connection metainfo, and use it to
|
||
restore the "description" logic that kdbus used to have.
|
||
|
||
* systemd-analyze netif that explains predictable interface (or networkctl)
|
||
|
||
* Add service setting to run a service within the specified VRF. i.e. do the
|
||
equivalent of "ip vrf exec".
|
||
|
||
* change SwitchRoot() implementation in PID 1 to use pivot_root(".", "."), as
|
||
documented in the pivot_root(2) man page, so that we can drop the /oldroot
|
||
temporary dir.
|
||
|
||
* special case some calls of chase_symlinks() to use openat2() internally, so
|
||
that the kernel does what we otherwise do.
|
||
|
||
* add a new flag to chase_symlinks() that stops chasing once the first missing
|
||
component is found and then allows the caller to create the rest.
|
||
|
||
* make use of new glibc 2.32 APIs sigabbrev_np() and strerrorname_np().
|
||
|
||
* if /usr/bin/swapoff fails due to OOM, log a friendly explanatory message about it
|
||
|
||
* pid1: Move to tracking of main pid/control pid of units per pidfd
|
||
|
||
* pid1: support new clone3() fork-into-cgroup feature
|
||
|
||
* pid1: also remove PID files of a service when the service starts, not just
|
||
when it exits
|
||
|
||
* make us use dynamically fewer deps for containers in general purpose distros:
|
||
o turn into dlopen() deps:
|
||
- kmod-libs (only when called from PID 1)
|
||
- libblkid (only in RootImage= handling in PID 1, but not elsewhere)
|
||
- libpam (only when called from PID 1)
|
||
- bzip2, xz, lz4 (always — gzip and zstd should probably stay static deps the way they are,
|
||
since they are so basic and our defaults)
|
||
o move into separate libsystemd-shared-iptables.so .so
|
||
- iptables-libs (only used by nspawn + networkd)
|
||
|
||
* seccomp: maybe use seccomp_merge() to merge our filters per-arch if we can.
|
||
Apparently kernel performance is much better with fewer larger seccomp
|
||
filters than with more smaller seccomp filters.
|
||
|
||
* systemd-path: add ESP and XBOOTLDR path. Add "private" runtime/state/cache dir enum,
|
||
mapping to $RUNTIME_DIRECTORY, $STATE_DIRECTORY and such
|
||
|
||
* seccomp: by default mask x32 ABI system wide on x86-64. it's on its way out
|
||
|
||
* seccomp: don't install filters for ABIs that are masked anyway for the
|
||
specific service
|
||
|
||
* busctl: maybe expose a verb "ping" for pinging a dbus service to see if it
|
||
exists and responds.
|
||
|
||
* Maybe add a separate GPT partition type to the discoverable partition spec
|
||
for "hibernate" partitions, that are exactly like swap partitions but only
|
||
activated right before hibernation and thus never used for regular swapping.
|
||
|
||
* socket units: allow creating a udev monitor socket with ListenDevices= or so,
|
||
with matches, then activate app through that passing socket over
|
||
|
||
* unify on openssl:
|
||
- kill gnutls support in resolved
|
||
- figure out what to do about libmicrohttpd, which has a hard dependency on
|
||
gnutls
|
||
- port fsprg over to a dlopen lib, then switch it to openssl
|
||
|
||
* add growvol and makevol options for /etc/crypttab, similar to
|
||
x-systemd.growfs and x-systemd-makefs.
|
||
|
||
* userdb: allow username prefix searches in varlink API, allow realname and
|
||
realname substr searches in varlink API
|
||
|
||
* userdb: allow uid/gid range checks
|
||
|
||
* userdb: allow existence checks
|
||
|
||
* pid1: activation by journal search expression
|
||
|
||
* when switching root from initrd to host, set the machine_id env var so that
|
||
if the host has no machine ID set yet we continue to use the random one the
|
||
initrd had set.
|
||
|
||
* sd-event: add native support for P_ALL waitid() watching, then move PID 1 to
|
||
it for reaping assigned but unknown children. This needs to some special care
|
||
to operate somewhat sensibly in light of priorities: P_ALL will return
|
||
arbitrary processes, regardless of the priority we want to watch them with,
|
||
hence on each event loop iteration check all processes which we shall watch
|
||
with higher prio explicitly, and then watch the entire rest with P_ALL.
|
||
|
||
* tweak sd-event's child watching: keep a prioq of children to watch and use
|
||
waitid() only on the children with the highest priority until one is waitable
|
||
and ignore all lower-prio ones from that point on
|
||
|
||
* maybe introduce xattrs that can be set on the root dir of the root fs
|
||
partition that declare the volatility mode to use the image in. Previously I
|
||
thought marking this via GPT partition flags but that's not ideal since
|
||
that's outside of the LUKS encryption/verity verification, and we probably
|
||
shouldn't operate in a volatile mode unless we got told so from a trusted
|
||
source.
|
||
|
||
* coredump: maybe when coredumping read a new xattr from /proc/$PID/exe that
|
||
may be used to mark a whole binary as non-coredumpable. Would fix:
|
||
https://bugs.freedesktop.org/show_bug.cgi?id=69447
|
||
|
||
* teach parse_timestamp() timezones like the calendar spec already knows it
|
||
|
||
* beef up hibernation to optionally do swapon/swapoff immediately before/after
|
||
the hibernation
|
||
|
||
* beef up s2h to implement a battery watch loop: instead of entering
|
||
hibernation unconditionally after coming back from resume make a decision
|
||
based on the battery load level: if battery level is above a specific
|
||
threshold, go to suspend again, only hibernate if below it. This means we'd
|
||
stick to suspend usually, but fall back to hibernation only when battery runs
|
||
empty (well, subject to our sampling interval). Related to this, check if we
|
||
can make ACPI _BTP (i.e. /sys/class/power_supply/*/alarm) work for us too,
|
||
i.e. see if it can wake up machines from suspend, so that we could resume
|
||
automatically when the system is low on power and move automatically to
|
||
hibernation mode. (see
|
||
https://uefi.org/sites/default/files/resources/ACPI%206_2_A_Sept29.pdf
|
||
section 10.2.2.8 and
|
||
https://docs.microsoft.com/en-us/windows-hardware/design/device-experiences/modern-standby-wake-sources
|
||
at the end).
|
||
|
||
* We should probably replace /etc/rc.d/README with a symlink to doc
|
||
content. After all it is constant vendor data.
|
||
|
||
* maybe add kernel cmdline params: to force random seed crediting
|
||
|
||
* introduce a new per-process uuid, similar to the boot id, the machine id, the
|
||
invocation id, that is derived from process creds, specifically a hashed
|
||
combination of AT_RANDOM + getpid() + the starttime from
|
||
/proc/self/status. Then add these ids implicitly when logging. Deriving this
|
||
uuid from these three things has the benefit that it can be derived easily
|
||
from /proc/$PID/ in a stable, and unique way that changes on both fork() and
|
||
exec().
|
||
|
||
* let's not GC a unit while its ratelimits are still pending
|
||
|
||
* when killing due to service watchdog timeout maybe detect whether target
|
||
process is under ptracing and then log loudly and continue instead.
|
||
|
||
* make rfkill uaccess controllable by default, i.e. steal rule from
|
||
gnome-bluetooth and friends
|
||
|
||
* make MAINPID= message reception checks even stricter: if service uses User=,
|
||
then check sending UID and ignore message if it doesn't match the user or
|
||
root.
|
||
|
||
* maybe trigger a uevent "change" on a device if "systemctl reload xyz.device"
|
||
is issued.
|
||
|
||
* when importing an fs tree with machined, optionally apply userns-rec-chown
|
||
|
||
* when importing an fs tree with machined, complain if image is not an OS
|
||
|
||
* Maybe introduce a helper safe_exec() or so, which is to execve() which
|
||
safe_fork() is to fork(). And then make revert the RLIMIT_NOFILE soft limit
|
||
to 1K implicitly, unless explicitly opted-out.
|
||
|
||
* rework seccomp/nnp logic that even if User= is used in combination with
|
||
a seccomp option we don't have to set NNP. For that, change uid first whil
|
||
keeping CAP_SYS_ADMIN, then apply seccomp, the drop cap.
|
||
|
||
* when no locale is configured, default to UEFI's PlatformLang variable
|
||
|
||
* add a new syscall group "@esoteric" for more esoteric stuff such as bpf() and
|
||
usefaultd() and make systemd-analyze check for it.
|
||
|
||
* paranoia: whenever we process passwords, call mlock() on the memory
|
||
first. i.e. look for all places we use free_and_erasep() and
|
||
augment them with mlock(). Also use MADV_DONTDUMP.
|
||
Alternatively (preferably?) use memfd_secret().
|
||
|
||
* Move RestrictAddressFamily= to the new cgroup create socket
|
||
|
||
* maybe implicitly attach monotonic+realtime timestamps to outgoing messages in
|
||
log.c and sd-journal-send
|
||
|
||
* optionally: turn on cgroup delegation for per-session scope units
|
||
|
||
* introduce per-unit (i.e. per-slice, per-service) journal log size limits.
|
||
|
||
* sd-boot: optionally, show boot menu when previous default boot item has
|
||
non-zero "tries done" count
|
||
|
||
* augment CODE_FILE=, CODE_LINE= with something like CODE_BASE= or so which
|
||
contains some identifier for the project, which allows us to include
|
||
clickable links to source files generating these log messages. The identifier
|
||
could be some abberviated URL prefix or so (taking inspiration from Go
|
||
imports). For example, for systemd we could use
|
||
CODE_BASE=github.com/systemd/systemd/blob/98b0b1123cc or so which is
|
||
sufficient to build a link by prefixing "http://" and suffixing the
|
||
CODE_FILE.
|
||
|
||
* Augment MESSAGE_ID with MESSAGE_BASE, in a similar fashion so that we can
|
||
make clickable links from log messages carrying a MESSAGE_ID, that lead to
|
||
some explanatory text online.
|
||
|
||
* maybe extend .path units to expose fanotify() per-mount change events
|
||
|
||
* When reloading configuration PID 1 should reset all its properties to the
|
||
original defaults before calling parse_config()
|
||
|
||
* hibernate/s2h: make this robust and safe to enable in Fedora by default.
|
||
Specifically:
|
||
|
||
1. add resume_offset support to the resume code (i.e. support swap files
|
||
properly)
|
||
2. check if swap is on weird storage and refuse if so
|
||
3. add auto-detection of hibernation images
|
||
|
||
* cgroups: use inotify to get notified when somebody else modifies cgroups
|
||
owned by us, then log a friendly warning.
|
||
|
||
* beef up log.c with support for stripping ANSI sequences from strings, so that
|
||
it is OK to include them in log strings. This would be particularly useful so
|
||
that our log messages could contain clickable links for example for unit
|
||
files and suchlike we operate on.
|
||
|
||
* importd: add ability download images for portabled + sysext
|
||
|
||
* add support for "portablectl attach http://foobar.com/waaa.raw (i.e. importd integration)
|
||
|
||
* sync dynamic uids/gids between host+portable srvice (i.e. if DynamicUser=1 is set for a service, make sure that the
|
||
selected user is resolvable in the service even if it ships its own /etc/passwd)
|
||
|
||
* Fix DECIMAL_STR_MAX or DECIMAL_STR_WIDTH. One includes a trailing NUL, the
|
||
other doesn't. What a disaster. Probably to exclude it.
|
||
|
||
* Check that users of inotify's IN_DELETE_SELF flag are using it properly, as
|
||
usually IN_ATTRIB is the right way to watch deleted files, as the former only
|
||
fires when a file is actually removed from disk, i.e. the link count drops to
|
||
zero and is not open anymore, while the latter happens when a file is
|
||
unlinked from any dir.
|
||
|
||
* port systemctl, busctl, … over to format-table.[ch]'s table formatters
|
||
|
||
* pid1: lock image configured with RootDirectory=/RootImage= using the usual nspawn semantics while the unit is up
|
||
|
||
* add --vacuum-xyz options to coredumpctl, matching those journalctl already has.
|
||
|
||
* introduce Ephemeral= unit file switch, that creates an ephemeral copy of all
|
||
files and directories that are left writable for a unit, and which are
|
||
removed after the unit goes down again. A bit like --ephemeral for
|
||
systemd-nspawn but for system services. If used together with RootImage= this
|
||
should reflink the image file itself.
|
||
|
||
Related: add Ephemeral=<path1> <path2> … which would allow marking
|
||
specific paths only like this.
|
||
|
||
* add CopyFile= or so as unit file setting that may be used to copy files or
|
||
directory trees from the host to the services RootImage= and RootDirectory=
|
||
environment. Which we can use for /etc/machine-id and in particular
|
||
/etc/resolv.conf. Should be smart and do something useful on read-only
|
||
images, for example fall back to read-only bind mounting the file instead.
|
||
|
||
* show invocation ID in systemd-run output
|
||
|
||
* bypass SIGTERM state in unit files if KillSignal is SIGKILL
|
||
|
||
* add proper dbus APIs for the various sd_notify() commands, such as MAINPID=1
|
||
and so on, which would mean we could report errors and such.
|
||
|
||
* introduce DefaultSlice= or so in system.conf that allows changing where we
|
||
place our units by default, i.e. change system.slice to something
|
||
else. Similar, ManagerSlice= should exist so that PID1's own scope unit could
|
||
be moved somewhere else too. Finally machined and logind should get similar
|
||
options so that it is possible to move user session scopes and machines to a
|
||
different slice too by default. Usecase: people who want to put resources on
|
||
the entire system, with the exception of one specific service. See:
|
||
https://lists.freedesktop.org/archives/systemd-devel/2018-February/040369.html
|
||
|
||
* maybe rework get_user_creds() to query the user database if $SHELL is used
|
||
for root, but only then.
|
||
|
||
* be stricter with fds we receive for the fdstore: close them asynchronously
|
||
|
||
* calenderspec: add support for week numbers and day numbers within a
|
||
year. This would allow us to define "bi-weekly" triggers safely.
|
||
|
||
* sd-bus: add vtable flag, that may be used to request client creds implicitly
|
||
and asynchronously before dispatching the operation
|
||
|
||
* sd-bus: parse addresses given in sd_bus_set_addresses immediately and not
|
||
only when used. Add unit tests.
|
||
|
||
* make use of ethtool veth peer info in machined, for automatically finding out
|
||
host-side interface pointing to the container.
|
||
|
||
* add some special mode to LogsDirectory=/StateDirectory=… that allows
|
||
declaring these directories without necessarily pulling in deps for them, or
|
||
creating them when starting up. That way, we could declare that
|
||
systemd-journald writes to /var/log/journal, which could be useful when we
|
||
doing disk usage calculations and so on.
|
||
|
||
* deprecate RootDirectoryStartOnly= in favour of a new ExecStart= prefix char
|
||
|
||
* add a new RuntimeDirectoryPreserve= mode that defines a similar lifecycle for
|
||
the runtime dir as we maintain for the fdstore: i.e. keep it around as long
|
||
as the unit is running or has a job queued.
|
||
|
||
* support projid-based quota in machinectl for containers
|
||
|
||
* add a way to lock down cgroup migration: a boolean, which when set for a unit
|
||
makes sure the processes in it can never migrate out of it
|
||
|
||
* blog about fd store and restartable services
|
||
|
||
* document Environment=SYSTEMD_LOG_LEVEL=debug drop-in in debugging document
|
||
|
||
* rework ExecOutput and ExecInput enums so that EXEC_OUTPUT_NULL loses its
|
||
magic meaning and is no longer upgraded to something else if set explicitly.
|
||
|
||
* in the long run: permit a system with /etc/machine-id linked to /dev/null, to
|
||
make it lose its identity, i.e. be anonymous. For this we'd have to patch
|
||
through the whole tree to make all code deal with the case where no machine
|
||
ID is available.
|
||
|
||
* optionally, collect cgroup resource data, and store it in per-unit RRD files,
|
||
suitable for processing with rrdtool. Add bus API to access this data, and
|
||
possibly implement a CPULoad property based on it.
|
||
|
||
* beef up pam_systemd to take unit file settings such as cgroups properties as
|
||
parameters
|
||
|
||
* maybe hook up xfs/ext4 quotactl() with services? i.e. automatically manage
|
||
the quota of the user indicated in User= via unit file settings, like the
|
||
other resource management concepts. Would mix nicely with DynamicUser=1. Or
|
||
alternatively, do this with projids, so that we can also cover services
|
||
running as root. Quota should probably cover all the special dirs such as
|
||
StateDirectory=, LogsDirectory=, CacheDirectory=, as well as RootDirectory= if it
|
||
is set, plus the whole disk space any image configured with RootImage=.
|
||
|
||
* In DynamicUser= mode: before selecting a UID, use disk quota APIs on relevant
|
||
disks to see if the UID is already in use.
|
||
|
||
* expose IO accounting data on the bus, show it in systemd-run --wait and log
|
||
about it in the resource log message
|
||
|
||
* Add AddUser= setting to unit files, similar to DynamicUser=1 which however
|
||
creates a static, persistent user rather than a dynamic, transient user. We
|
||
can leverage code from sysusers.d for this.
|
||
|
||
* add some optional flag to ReadWritePaths= and friends, that has the effect
|
||
that we create the dir in question when the service is started. Example:
|
||
|
||
ReadWritePaths=:/var/lib/foobar
|
||
|
||
* Add ExecMonitor= setting. May be used multiple times. Forks off a process in
|
||
the service cgroup, which is supposed to monitor the service, and when it
|
||
exits the service is considered failed by its monitor.
|
||
|
||
* track the per-service PAM process properly (i.e. as an additional control
|
||
process), so that it may be queried on the bus and everything.
|
||
|
||
* add a new "debug" job mode, that is propagated to unit_start() and for
|
||
services results in two things: we raise SIGSTOP right before invoking
|
||
execve() and turn off watchdog support. Then, use that to implement
|
||
"systemd-gdb" for attaching to the start-up of any system service in its
|
||
natural habitat.
|
||
|
||
* gpt-auto logic: support encrypted swap, add kernel cmdline option to force
|
||
it, and honour a gpt bit about it, plus maybe a configuration file
|
||
|
||
* add a percentage syntax for TimeoutStopSec=, e.g. TimeoutStopSec=150%, and
|
||
then use that for the setting used in user@.service. It should be understood
|
||
relative to the configured default value.
|
||
|
||
* enable LockMLOCK to take a percentage value relative to physical memory
|
||
|
||
* Permit masking specific netlink APIs with RestrictAddressFamily=
|
||
|
||
* define gpt header bits to select volatility mode
|
||
|
||
* ProtectClock= (drops CAP_SYS_TIMES, adds seecomp filters for settimeofday, adjtimex), sets DeviceAllow o /dev/rtc
|
||
|
||
* ProtectTracing= (drops CAP_SYS_PTRACE, blocks ptrace syscall, makes /sys/kernel/tracing go away)
|
||
|
||
* ProtectMount= (drop mount/umount/pivot_root from seccomp, disallow fuse via DeviceAllow, imply Mountflags=slave)
|
||
|
||
* ProtectKeyRing= to take keyring calls away
|
||
|
||
* RemoveKeyRing= to remove all keyring entries of the specified user
|
||
|
||
* ProtectReboot= that masks reboot() and kexec_load() syscalls, prohibits kill
|
||
on PID 1 with the relevant signals, and makes relevant files in /sys and
|
||
/proc (such as the sysrq stuff) unavailable
|
||
|
||
* Support ReadWritePaths/ReadOnlyPaths/InaccessiblePaths in systemd --user instances
|
||
via the new unprivileged Landlock LSM (https://landlock.io)
|
||
|
||
* make sure the ratelimit object can deal with USEC_INFINITY as way to turn off things
|
||
|
||
* in nss-systemd, if we run inside of RootDirectory= with PrivateUsers= set,
|
||
find a way to map the User=/Group= of the service to the right name. This way
|
||
a user/group for a service only has to exist on the host for the right
|
||
mapping to work.
|
||
|
||
* add bus API for creating unit files in /etc, reusing the code for transient units
|
||
|
||
* add bus API to remove unit files from /etc
|
||
|
||
* add bus API to retrieve current unit file contents (i.e. implement "systemctl cat" on the bus only)
|
||
|
||
* rework fopen_temporary() to make use of open_tmpfile_linkable() (problem: the
|
||
kernel doesn't support linkat() that replaces existing files, currently)
|
||
|
||
* transient units: don't bother with actually setting unit properties, we
|
||
reload the unit file anyway
|
||
|
||
* optionally, also require WATCHDOG=1 notifications during service start-up and shutdown
|
||
|
||
* cache sd_event_now() result from before the first iteration...
|
||
|
||
* PID1: find a way how we can reload unit file configuration for
|
||
specific units only, without reloading the whole of systemd
|
||
|
||
* add an explicit parser for LimitRTPRIO= that verifies
|
||
the specified range and generates sane error messages for incorrect
|
||
specifications.
|
||
|
||
* when we detect that there are waiting jobs but no running jobs, do something
|
||
|
||
* PID 1 should send out sd_notify("WATCHDOG=1") messages (for usage in the --user mode, and when run via nspawn)
|
||
|
||
* there's probably something wrong with having user mounts below /sys,
|
||
as we have for debugfs. for example, src/core/mount.c handles mounts
|
||
prefixed with /sys generally special.
|
||
https://lists.freedesktop.org/archives/systemd-devel/2015-June/032962.html
|
||
|
||
* fstab-generator: default to tmpfs-as-root if only usr= is specified on the kernel cmdline
|
||
|
||
* docs: bring https://www.freedesktop.org/wiki/Software/systemd/MyServiceCantGetRealtime up to date
|
||
|
||
* add a job mode that will fail if a transaction would mean stopping
|
||
running units. Use this in timedated to manage the NTP service
|
||
state.
|
||
https://lists.freedesktop.org/archives/systemd-devel/2015-April/030229.html
|
||
|
||
* The udev blkid built-in should expose a property that reflects
|
||
whether media was sensed in USB CF/SD card readers. This should then
|
||
be used to control SYSTEMD_READY=1/0 so that USB card readers aren't
|
||
picked up by systemd unless they contain a medium. This would mirror
|
||
the behaviour we already have for CD drives.
|
||
|
||
* hostnamectl: show root image uuid
|
||
|
||
* Find a solution for SMACK capabilities stuff:
|
||
https://lists.freedesktop.org/archives/systemd-devel/2014-December/026188.html
|
||
|
||
* synchronize console access with BSD locks:
|
||
https://lists.freedesktop.org/archives/systemd-devel/2014-October/024582.html
|
||
|
||
* as soon as we have sender timestamps, revisit coalescing multiple parallel daemon reloads:
|
||
https://lists.freedesktop.org/archives/systemd-devel/2014-December/025862.html
|
||
|
||
* figure out when we can use the coarse timers
|
||
|
||
* maybe allow timer units with an empty Units= setting, so that they
|
||
can be used for resuming the system but nothing else.
|
||
|
||
* what to do about udev db binary stability for apps? (raw access is not an option)
|
||
|
||
* exponential backoff in timesyncd when we cannot reach a server
|
||
|
||
* timesyncd: add ugly bus calls to set NTP servers per-interface, for usage by NM
|
||
|
||
* merge ~/.local/share and ~/.local/lib into one similar /usr/lib and /usr/share....
|
||
|
||
* add systemd.abort_on_kill or some other such flag to send SIGABRT instead of SIGKILL
|
||
(throughout the codebase, not only PID1)
|
||
|
||
* drop nss-myhostname in favour of nss-resolve?
|
||
|
||
* resolved:
|
||
- mDNS/DNS-SD
|
||
- service registration
|
||
- service/domain/types browsing
|
||
- avahi compat
|
||
- DNS-SD service registration from socket units
|
||
- resolved should optionally register additional per-interface LLMNR
|
||
names, so that for the container case we can establish the same name
|
||
(maybe "host") for referencing the server, everywhere.
|
||
- allow clients to request DNSSEC for a single lookup even if DNSSEC is off (?)
|
||
- hook up resolved with machined-based address resolution
|
||
|
||
* refcounting in sd-resolve is borked
|
||
|
||
* add new gpt type for btrfs volumes
|
||
|
||
* generator that automatically discovers btrfs subvolumes, identifies their purpose based on some xattr on them.
|
||
|
||
* a way for container managers to turn off getty starting via $container_headless= or so...
|
||
|
||
* figure out a nice way how we can let the admin know what child/sibling unit causes cgroup membership for a specific unit
|
||
|
||
* For timer units: add some mechanisms so that timer units that trigger immediately on boot do not have the services
|
||
they run added to the initial transaction and thus confuse Type=idle.
|
||
|
||
* add bus api to query unit file's X fields.
|
||
|
||
* gpt-auto-generator:
|
||
- Define new partition type for encrypted swap? Support probed LUKS for encrypted swap?
|
||
- Make /home automount rather than mount?
|
||
|
||
* add generator that pulls in systemd-network from containers when
|
||
CAP_NET_ADMIN is set, more than the loopback device is defined, even
|
||
when it is otherwise off
|
||
|
||
* MessageQueueMessageSize= (and suchlike) should use parse_iec_size().
|
||
|
||
* implement Distribute= in socket units to allow running multiple
|
||
service instances processing the listening socket, and open this up
|
||
for ReusePort=
|
||
|
||
* cgroups:
|
||
- implement per-slice CPUFairScheduling=1 switch
|
||
- introduce high-level settings for RT budget, swappiness
|
||
- how to reset dynamically changed unit cgroup attributes sanely?
|
||
- when reloading configuration, apply new cgroup configuration
|
||
- when recursively showing the cgroup hierarchy, optionally also show
|
||
the hierarchies of child processes
|
||
- add settings for cgroup.max.descendants and cgroup.max.depth,
|
||
maybe use them for user@.service
|
||
|
||
* transient units:
|
||
- add field to transient units that indicate whether systemd or somebody else saves/restores its settings, for integration with libvirt
|
||
|
||
* when we detect low battery and no AC on boot, show pretty splash and refuse boot
|
||
|
||
* libsystemd-journal, libsystemd-login, libudev: add calls to easily attach these objects to sd-event event loops
|
||
|
||
* be more careful what we export on the bus as (usec_t) 0 and (usec_t) -1
|
||
|
||
* rfkill,backlight: we probably should run the load tools inside of the udev rules so that the state is properly initialized by the time other software sees it
|
||
|
||
* After coming back from hibernation reset hibernation swap partition using the /dev/snapshot ioctl APIs
|
||
|
||
* If we try to find a unit via a dangling symlink, generate a clean
|
||
error. Currently, we just ignore it and read the unit from the search
|
||
path anyway.
|
||
|
||
* refuse boot if /usr/lib/os-release is missing or /etc/machine-id cannot be set up
|
||
|
||
* man: the documentation of Restart= currently is very misleading and suggests the tools from ExecStartPre= might get restarted.
|
||
|
||
* load .d/*.conf dropins for device units
|
||
|
||
* There's currently no way to cancel fsck (used to be possible via C-c or c on the console)
|
||
|
||
* add option to sockets to avoid activation. Instead just drop packets/connections, see http://cyberelk.net/tim/2012/02/15/portreserve-systemd-solution/
|
||
|
||
* make sure systemd-ask-password-wall does not shutdown systemd-ask-password-console too early
|
||
|
||
* verify that the AF_UNIX sockets of a service in the fs still exist
|
||
when we start a service in order to avoid confusion when a user
|
||
assumes starting a service is enough to make it accessible
|
||
|
||
* Make it possible to set the keymap independently from the font on
|
||
the kernel cmdline. Right now setting one resets also the other.
|
||
|
||
* and a dbus call to generate target from current state
|
||
|
||
* investigate whether the gnome pty helper should be moved into systemd, to provide cgroup support.
|
||
|
||
* dot output for --test showing the 'initial transaction'
|
||
|
||
* be able to specify a forced restart of service A where service B depends on, in case B
|
||
needs to be auto-respawned?
|
||
|
||
* pid1:
|
||
- When logging about multiple units (stopping BoundTo units, conflicts, etc.),
|
||
log both units as UNIT=, so that journalctl -u triggers on both.
|
||
- generate better errors when people try to set transient properties
|
||
that are not supported...
|
||
https://lists.freedesktop.org/archives/systemd-devel/2015-February/028076.html
|
||
- maybe introduce WantsMountsFor=? Usecase:
|
||
https://lists.freedesktop.org/archives/systemd-devel/2015-January/027729.html
|
||
- recreate systemd's D-Bus private socket file on SIGUSR2
|
||
- move PAM code into its own binary
|
||
- when we automatically restart a service, ensure we restart its rdeps, too.
|
||
- hide PAM options in fragment parser when compile time disabled
|
||
- Support --test based on current system state
|
||
- If we show an error about a unit (such as not showing up) and it has no Description string, then show a description string generated form the reverse of unit_name_mangle().
|
||
- after deserializing sockets in socket.c we should reapply sockopts and things
|
||
- drop PID 1 reloading, only do reexecing (difficult: Reload()
|
||
currently is properly synchronous, Reexec() is weird, because we
|
||
cannot delay the response properly until we are back, so instead of
|
||
being properly synchronous we just keep open the fd and close it
|
||
when done. That means clients do not get a successful method reply,
|
||
but much rather a disconnect on success.
|
||
- when breaking cycles drop sysv services first, then services from /run, then from /etc, then from /usr
|
||
- when a bus name of a service disappears from the bus make sure to queue further activation requests
|
||
- maybe introduce CoreScheduling=yes/no to optionally set a PR_SCHED_CORE cookie, so that all
|
||
processes in a service's cgroup share the same cookie and are guaranteed not to share SMT cores
|
||
with other units https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/admin-guide/hw-vuln/core-scheduling.rst
|
||
|
||
* unit files:
|
||
- allow port=0 in .socket units
|
||
- maybe introduce ExecRestartPre=
|
||
- implement Register= switch in .socket units to enable registration
|
||
in Avahi, RPC and other socket registration services.
|
||
- allow Type=simple with PIDFile=
|
||
https://bugzilla.redhat.com/show_bug.cgi?id=723942
|
||
- allow writing multiple conditions in unit files on one line
|
||
- introduce Type=pid-file
|
||
- add a concept of RemainAfterExit= to scope units
|
||
- Allow multiple ExecStart= for all Type= settings, so that we can cover rescue.service nicely
|
||
- add verification of [Install] section to systemd-analyze verify
|
||
|
||
* timer units:
|
||
- timer units should get the ability to trigger when DST changes
|
||
- Modulate timer frequency based on battery state
|
||
|
||
* add libsystemd-password or so to query passwords during boot using the password agent logic
|
||
|
||
* clean up date formatting and parsing so that all absolute/relative timestamps we format can also be parsed
|
||
|
||
* on shutdown: move utmp, wall, audit logic all into PID 1 (or logind?), get rid of systemd-update-utmp-runlevel
|
||
|
||
* make repeated alt-ctrl-del presses printing a dump
|
||
|
||
* currently x-systemd.timeout is lost in the initrd, since crypttab is copied into dracut, but fstab is not
|
||
|
||
* add a pam module that passes the hdd passphrase into the PAM stack and then expires it, for usage by gdm auto-login.
|
||
|
||
* add a pam module that on password changes updates any LUKS slot where the password matches
|
||
|
||
* test/:
|
||
- add unit tests for config_parse_device_allow()
|
||
|
||
* seems that when we follow symlinks to units we prefer the symlink
|
||
destination path over /etc and /usr. We should not do that. Instead
|
||
/etc should always override /run+/usr and also any symlink
|
||
destination.
|
||
|
||
* when isolating, try to figure out a way how we implicitly can order
|
||
all units we stop before the isolating unit...
|
||
|
||
* teach ConditionKernelCommandLine= globs or regexes (in order to match foobar={no,0,off})
|
||
|
||
* Add ConditionDirectoryNotEmpty= handle non-absoute paths as a search path or add
|
||
ConditionConfigSearchPathNotEmpty= or different syntax? See the discussion starting at
|
||
https://github.com/systemd/systemd/pull/15109#issuecomment-607740136.
|
||
|
||
* BootLoaderSpec: Define a way how an installer can figure out whether a BLS
|
||
compliant boot loader is installed.
|
||
|
||
* think about requeuing jobs when daemon-reload is issued? usecase:
|
||
the initrd issues a reload after fstab from the host is accessible
|
||
and we might want to requeue the mounts local-fs acquired through
|
||
that automatically.
|
||
|
||
* systemd-inhibit: make taking delay locks useful: support sending SIGINT or SIGTERM on PrepareForSleep()
|
||
|
||
* remove any syslog support from log.c — we probably cannot do this before split-off udev is gone for good
|
||
|
||
* shutdown logging: store to EFI var, and store to USB stick?
|
||
|
||
* merge unit_kill_common() and unit_kill_context()
|
||
|
||
* add a dependency on standard-conf.xml and other included files to man pages
|
||
|
||
* MountFlags=shared acts as MountFlags=slave right now.
|
||
|
||
* properly handle loop back mounts via fstab, especially regards to fsck/passno
|
||
|
||
* initialize the hostname from the fs label of /, if /etc/hostname does not exist?
|
||
|
||
* sd-bus:
|
||
- EBADSLT handling
|
||
- GetAllProperties() on a non-existing object does not result in a failure currently
|
||
- port to sd-resolve for connecting to TCP dbus servers
|
||
- see if we can introduce a new sd_bus_get_owner_machine_id() call to retrieve the machine ID of the machine of the bus itself
|
||
- see if we can drop more message validation on the sending side
|
||
- add API to clone sd_bus_message objects
|
||
- longer term: priority inheritance
|
||
- dbus spec updates:
|
||
- NameLost/NameAcquired obsolete
|
||
- path escaping
|
||
- update systemd.special(7) to mention that dbus.socket is only about the compatibility socket now
|
||
|
||
* sd-event
|
||
- allow multiple signal handlers per signal?
|
||
- document chaining of signal handler for SIGCHLD and child handlers
|
||
- define more intervals where we will shift wakeup intervals around in, 1h, 6h, 24h, ...
|
||
- maybe support iouring as backend, so that we allow hooking read and write
|
||
operations instead of IO ready events into event loops. See considerations
|
||
here:
|
||
http://blog.vmsplice.net/2020/07/rethinking-event-loop-integration-for.html
|
||
|
||
* dbus: when a unit failed to load (i.e. is in UNIT_ERROR state), we
|
||
should be able to safely try another attempt when the bus call LoadUnit() is invoked.
|
||
|
||
* maybe do not install getty@tty1.service symlink in /etc but in /usr?
|
||
|
||
* print a nicer explanation if people use variable/specifier expansion in ExecStart= for the first word
|
||
|
||
* mount: turn dependency information from /proc/self/mountinfo into dependency information between systemd units.
|
||
|
||
* systemd-firstboot: make sure to always use chase_symlinks() before
|
||
reading/writing files
|
||
|
||
* firstboot: make it useful to be run immediately after yum --installroot to set up a machine. (most specifically, make --copy-root-password work even if /etc/passwd already exists
|
||
|
||
* EFI:
|
||
- honor language efi variables for default language selection (if there are any?)
|
||
- honor timezone efi variables for default timezone selection (if there are any?)
|
||
- change bootctl to be backed by systemd-bootd to control temporary and persistent default boot goal plus efi variables
|
||
* bootctl
|
||
- recognize the case when not booted on EFI
|
||
|
||
* bootctl,sd-boot: actually honour the "architecture" key
|
||
|
||
* bootctl:
|
||
- show whether UEFI audit mode is available
|
||
- teach it to prepare an ESP wholesale, i.e. with mkfs.vfat invocation
|
||
- teach it to copy in unified kernel images and maybe type #1 boot loader spec entries from host
|
||
|
||
* kernel-install:
|
||
- optionally, support generating type #2 entries instead of type #1, including signing them
|
||
|
||
* logind:
|
||
- logind: optionally, ignore idle-hint logic for autosuspend, block suspend as long as a session is around
|
||
- logind: wakelock/opportunistic suspend support
|
||
- Add pretty name for seats in logind
|
||
- logind: allow showing logout dialog from system?
|
||
- add Suspend() bus calls which take timestamps to fix double suspend issues when somebody hits suspend and closes laptop quickly.
|
||
- if pam_systemd is invoked by su from a process that is outside of a
|
||
any session we should probably just become a NOP, since that's
|
||
usually not a real user session but just some system code that just
|
||
needs setuid().
|
||
- logind: make the Suspend()/Hibernate() bus calls wait for the for
|
||
the job to be completed. before returning, so that clients can wait
|
||
for "systemctl suspend" to finish to know when the suspending is
|
||
complete.
|
||
- logind: when the power button is pressed short, just popup a
|
||
logout dialog. If it is pressed for 1s, do the usual
|
||
shutdown. Inspiration are Macs here.
|
||
- expose "Locked" property on logind session objects
|
||
- maybe allow configuration of the StopTimeout for session scopes
|
||
- rename session scope so that it includes the UID. THat way
|
||
the session scope can be arranged freely in slices and we don't have
|
||
make assumptions about their slice anymore.
|
||
- follow PropertiesChanged state more closely, to deal with quick logouts and
|
||
relogins
|
||
- (optionally?) spawn seat-manager@$SEAT.service whenever a seat shows up that as CanGraphical set
|
||
- expose details of boot entries on the bus. In particular, it should be possible
|
||
to query the list of boot entry titles that bootctl / sd-boot would show.
|
||
Currently we only expose their identifiers.
|
||
|
||
* move multiseat vid/pid matches from logind udev rule to hwdb
|
||
|
||
* logind: rework pam_logind to also do a bus call in case of invocation from
|
||
user@.service, which returns the XDG_RUNTIME_DIR value, and make this
|
||
behaviour selectable via pam module option.
|
||
|
||
* delay activation of logind until somebody logs in, or when /dev/tty0 pulls it
|
||
in or lingering is on (so that containers don't bother with it until PAM is used). also exit-on-idle
|
||
|
||
* journal:
|
||
- consider introducing implicit _TTY= + _PPID= + _EUID= + _EGID= + _FSUID= + _FSGID= fields
|
||
- journald: also get thread ID from client, plus thread name
|
||
- journal: when waiting for journal additions in the client always sleep at least 1s or so, in order to minimize wakeups
|
||
- add API to close/reopen/get fd for journal client fd in libsystemd-journal.
|
||
- fall back to /dev/log based logging in libsystemd-journal, if we cannot log natively?
|
||
- declare the local journal protocol stable in the wiki interface chart
|
||
- sd-journal: speed up sd_journal_get_data() with transparent hash table in bg
|
||
- journald: when dropping msgs due to ratelimit make sure to write
|
||
"dropped %u messages" not only when we are about to print the next
|
||
message that works, but already after a short timeout
|
||
- check if we can make journalctl by default use --follow mode inside of less if called without args?
|
||
- maybe add API to send pairs of iovecs via sd_journal_send
|
||
- journal: add a setgid "systemd-journal" utility to invoke from libsystemd-journal, which passes fds via STDOUT and does PK access
|
||
- journactl: support negative filtering, i.e. FOOBAR!="waldo",
|
||
and !FOOBAR for events without FOOBAR.
|
||
- journal: store timestamp of journal_file_set_offline() in the header,
|
||
so it is possible to display when the file was last synced.
|
||
- journal-send.c, log.c: when the log socket is clogged, and we drop, count this and write a message about this when it gets unclogged again.
|
||
- journal: find a way to allow dropping history early, based on priority, other rules
|
||
- journal: When used on NFS, check payload hashes
|
||
- journald: add kernel cmdline option to disable ratelimiting for debug purposes
|
||
- refuse taking lower-case variable names in sd_journal_send() and friends.
|
||
- journald: we currently rotate only after MaxUse+MaxFilesize has been reached.
|
||
- journal: deal nicely with byte-by-byte copied files, especially regards header
|
||
- journal: sanely deal with entries which are larger than the individual file size, but where the components would fit
|
||
- Replace utmp, wtmp, btmp, and lastlog completely with journal
|
||
- journalctl: instead --after-cursor= maybe have a --cursor=XYZ+1 syntax?
|
||
- when a kernel driver logs in a tight loop, we should ratelimit that too.
|
||
- journald: optionally, log debug messages to /run but everything else to /var
|
||
- journald: when we drop syslog messages because the syslog socket is
|
||
full, make sure to write how many messages are lost as first thing
|
||
to syslog when it works again.
|
||
- journald: allow per-priority and per-service retention times when rotating/vacuuming
|
||
- journald: make use of uid-range.h to managed uid ranges to split
|
||
journals in.
|
||
- journalctl: add the ability to look for the most recent process of a binary. journalctl /usr/bin/X11 --pid=-1 or so...
|
||
- improve journalctl performance by loading journal files
|
||
lazily. Encode just enough information in the file name, so that we
|
||
do not have to open it to know that it is not interesting for us, for
|
||
the most common operations.
|
||
- man: document that corrupted journal files is nothing to act on
|
||
- rework journald sigbus stuff to use mutex
|
||
- Set RLIMIT_NPROC for systemd-journal-xyz, and all other of our
|
||
services that run under their own user ids, and use User= (but only
|
||
in a world where userns is ubiquitous since otherwise we cannot
|
||
invoke those daemons on the host AND in a container anymore). Also,
|
||
if LimitNPROC= is used without User= we should warn and refuse
|
||
operation.
|
||
- journalctl --verify: don't show files that are currently being
|
||
written to as FAIL, but instead show that their are being written to.
|
||
- add journalctl -H that talks via ssh to a remote peer and passes through
|
||
binary logs data
|
||
- add a version of --merge which also merges /var/log/journal/remote
|
||
- journalctl: -m should access container journals directly by enumerating
|
||
them via machined, and also watch containers coming and going.
|
||
Benefit: nspawn --ephemeral would start working nicely with the journal.
|
||
- assign MESSAGE_ID to log messages about failed services
|
||
- check if loop in decompress_blob_xz() is necessary
|
||
|
||
* journald: support RFC3164 fully for the incoming syslog transport, see
|
||
https://github.com/systemd/systemd/issues/19251#issuecomment-816601955
|
||
|
||
* Hook up journald's FSS logic with TPM2: seal the verification disk by
|
||
time-based policy, so that the verification key can remain on host and ve
|
||
validated via TPM.
|
||
|
||
* build short web pages out of each catalog entry, build them along with man
|
||
pages, and include hyperlinks to them in the journal output
|
||
|
||
* journald: do journal file writing out-of-process, with one writer process per
|
||
client UID, so that synthetic hash table collisions can slow down a specific
|
||
user's journal stream down but not the others.
|
||
|
||
* tweak journald context caching. In addition to caching per-process attributes
|
||
keyed by PID, cache per-cgroup attributes (i.e. the various xattrs we read)
|
||
keyed by cgroup path, and guarded by ctime changes. This should provide us
|
||
with a nice speed-up on services that have many processes running in the same
|
||
cgroup.
|
||
|
||
* maybe add call sd_journal_set_block_timeout() or so to set SO_SNDTIMEO for
|
||
the sd-journal logging socket, and, if the timeout is set to 0, sets
|
||
O_NONBLOCK on it. That way people can control if and when to block for
|
||
logging.
|
||
|
||
* journalctl: make sure -f ends when the container indicated by -M terminates
|
||
|
||
* journald: sigbus API via a signal-handler safe function that people may call
|
||
from the SIGBUS handler
|
||
|
||
* add a test if all entries in the catalog are properly formatted.
|
||
(Adding dashes in a catalog entry currently results in the catalog entry
|
||
being silently skipped. journalctl --update-catalog must warn about this,
|
||
and we should also have a unit test to check that all our message are OK.)
|
||
|
||
* homed:
|
||
- when user tries to log into record signed by unrecognized key, automatically add key to our chain after polkit auth
|
||
- rollback when resize fails mid-operation
|
||
- GNOME's side for forget key on suspend (requires rework so that lock screen runs outside of uid)
|
||
- update LUKS password on login if we find there's a password that unlocks the JSON record but not the LUKS device.
|
||
- create on activate?
|
||
- properties: icon url?, preferred session type?, administrator bool (which translates to 'wheel' membership)?, address?, telephone?, vcard?, samba stuff?, parental controls?
|
||
- communicate clearly when usb stick is safe to remove. probably involves
|
||
beefing up logind to make pam session close hook synchronous and wait until
|
||
systemd --user is shut down.
|
||
- logind: maybe keep a "busy fd" as long as there's a non-released session around or the user@.service
|
||
- maybe make automatic, read-only, time-based reflink-copies of LUKS disk
|
||
images (and btrfs snapshots of subvolumes) (think: time machine)
|
||
- distinguish destroy / remove (i.e. currently we can unregister a user, unregister+remove their home directory, but not just remove their home directory)
|
||
- in systemd's PAMName= logic: query passwords with ssh-askpassword, so that we can make "loginctl set-linger" mode work
|
||
- fingerprint authentication, pattern authentication, …
|
||
- make sure "classic" user records can also be managed by homed
|
||
- make size of $XDG_RUNTIME_DIR configurable in user record
|
||
- query password from kernel keyring first
|
||
- update even if record is "absent"
|
||
- move acct mgmt stuff from pam_systemd_home to pam_systemd?
|
||
- when "homectl --pkcs11-token-uri=" is used, synthesize ssh-authorized-keys records for all keys we have private keys on the stick for
|
||
- make slice for users configurable (requires logind rework)
|
||
- logind: populate auto-login list bus property from PKCS#11 token
|
||
- when determining state of a LUKS home directory, check DM suspended sysfs file
|
||
- when homed is in use, maybe start the user session manager in a mount namespace with MS_SLAVE,
|
||
so that mounts propagate down but not up - eg, user A setting up a backup volume
|
||
doesn't mean user B sees it
|
||
- use credentials logic/TPM2 logic to store homed signing key
|
||
- permit multiple user record signing keys to be used locally, and pick
|
||
the right one for signing records automatically depending on a pre-existing
|
||
signature
|
||
- add a way to "adopt" a home directory, i.e. strip foreign signatures
|
||
and insert a local signature instead.
|
||
- as an extension to the directory+subvolume backend: if located on
|
||
especially marked fs, then sync down password into LUKS header of that fs,
|
||
and always verify passwords against it too. Bootstrapping is a problem
|
||
though: if no one is logged in (or no other user even exists yet), how do you
|
||
unlock the volume in order to create the first user and add the first pw.
|
||
- support new FS_IOC_ADD_ENCRYPTION_KEY ioctl for setting up fscrypt
|
||
- maybe pre-create ~/.cache as subvol so that it can have separate quota
|
||
easily?
|
||
- add a switch to homectl (maybe called --first-boot) where it will check if
|
||
any non-system users exist, and if not prompts interactively for basic user
|
||
info, mimicking systemd-firstboot. Then, place this in a service that runs
|
||
after systemd-homed, but before gdm and friends, as a simple, barebones
|
||
fallback logic to get a regular user created on uninitialized systems.
|
||
- store PKCS#11 + FIDO2 token info in LUKS2 header, compatible with
|
||
systemd-cryptsetup, so that it can unlock homed volumes
|
||
- maybe make all *.home files owned by `systemd-home` user or so, so that we
|
||
can easily set overall quota for all users
|
||
- on login, if we can't fallocate initially, but rebalance is on, then allow
|
||
login in discard mode, then immediately rebalance, then turn off discard
|
||
- extend user records with optional "bulk" data. Specifically, a user
|
||
avatar/photo or so. This data should be stored along with the user record,
|
||
but probably shouldn't be part of the record itself, since it might be
|
||
large.
|
||
|
||
* add a new switch --auto-definitions=yes/no or so to systemd-repart. If
|
||
specified, synthesize a definition automatically if we can: enlarge last
|
||
partition on disk, but only if it is marked for growing and not read-only.
|
||
|
||
* systemd-repart: read LUKS encryption key from $CREDENTIALS_DIRECTORY
|
||
|
||
* systemd-repart: add a switch to factory reset the partition table without
|
||
immediately applying the new configuration again. i.e. --factory-reset=leave
|
||
or so. (this is useful to factory reset an image, then putting it into
|
||
another machine, ensuring that luks key is generated on new machine, not old)
|
||
|
||
* systemd-repart: support setting up dm-integrity with HMAC
|
||
|
||
* systemd-repart: maybe remove half-initialized image on failure. It fails
|
||
if the output file exists, so a repeated invocation will usually fail if
|
||
something goes wrong on the way.
|
||
|
||
* systemd-repart: drop pager mode on normal operation?
|
||
|
||
* systemd-repart: by default generate minimized partition tables (i.e. tables
|
||
that only cover the space actually used, excluding any free space at the
|
||
end), in order to maximize dd'ability. Requires libfdisk work, see
|
||
https://github.com/karelzak/util-linux/issues/907
|
||
|
||
* systemd-repart: MBR partition table support. Care needs to be taken regarding
|
||
Type=, so that partition definitions can sanely apply to both the GPT and the
|
||
MBR case. Idea: accept syntax "Type=gpt:home mbr:0x83" for setting the types
|
||
for the two partition types explicitly. And provide an internal mapping so
|
||
that "Type=linux-generic" maps to the right types for both partition tables
|
||
automatically.
|
||
|
||
* systemd-repart: allow sizing partitions as factor of available RAM, so that
|
||
we can reasonably size swap partitions for hibernation.
|
||
|
||
* systemd-repart: allow boolean option that ensures that if existing partition
|
||
doesn't exist within the configured size bounds the whole command fails. This
|
||
is useful to implement ESP vs. XBOOTLDR schemes in installers: have one set
|
||
of repart files for the case where ESP is large enough and one where it isn't
|
||
and XBOOTLDR is added in instead. Then apply the former first, and if it
|
||
fails to apply use the latter.
|
||
|
||
* systemd-repart: add per-partition option to never reuse existing partition
|
||
and always create anew even if matching partition already exists.
|
||
|
||
* systemd-repart: add per-partition option to fail if partition already exist,
|
||
i.e. is not added new. Similar, add option to fail if partition does not exist yet.
|
||
|
||
* systemd-repart: allow disabling growing of specific partitions, or making
|
||
them (think ESP: we don't ever want to grow it, since we cannot resize vfat)
|
||
Also add option to disable operation via kernel command line.
|
||
|
||
* systemd-repart: make it a static checker during early boot for existence and
|
||
absence of other partitions for trusted boot environments
|
||
|
||
* systemd-repart: add support for SD_GPT_FLAG_GROWFS also on real systems, i.e.
|
||
generate some unit to actually enlarge the fs after growing the partition
|
||
during boot.
|
||
|
||
* systemd-repart: do not print "Successfully resized …" when no change was done.
|
||
|
||
* document:
|
||
- document that deps in [Unit] sections ignore Alias= fields in
|
||
[Install] units of other units, unless those units are disabled
|
||
- man: clarify that time-sync.target is not only sysv compat but also useful otherwise. Same for similar targets
|
||
- document that service reload may be implemented as service reexec
|
||
- add a man page containing packaging guidelines and recommending usage of things like Documentation=, PrivateTmp=, PrivateNetwork= and ReadOnlyDirectories=/etc /usr.
|
||
- document systemd-journal-flush.service properly
|
||
- documentation: recommend to connect the timer units of a service to the service via Also= in [Install]
|
||
- man: document the very specific env the shutdown drop-in tools live in
|
||
- man: add more examples to man pages,
|
||
- in particular an example how to do the equivalent of switching runlevels
|
||
- man: maybe sort directives in man pages, and take sections from --help and apply them to man too
|
||
- document root=gpt-auto properly
|
||
|
||
* systemctl:
|
||
- add systemctl switch to dump transaction without executing it
|
||
- Add a verbose mode to "systemctl start" and friends that explains what is being done or not done
|
||
- "systemctl disable" on a static unit prints no message and does
|
||
nothing. "systemctl enable" does nothing, and gives a bad message
|
||
about it. Should fix both to print nice actionable messages.
|
||
- print nice message from systemctl --failed if there are no entries shown, and hook that into ExecStartPre of rescue.service/emergency.service
|
||
- add new command to systemctl: "systemctl system-reexec" which reexecs as many daemons as virtually possible
|
||
- systemctl enable: fail if target to alias into does not exist? maybe show how many units are enabled afterwards?
|
||
- systemctl: "Journal has been rotated since unit was started." message is misleading
|
||
- systemctl status output should include list of triggering units and their status
|
||
|
||
* introduce an option (or replacement) for "systemctl show" that outputs all
|
||
properties as JSON, similar to busctl's new JSON output. In contrast to that
|
||
it should skip the variant type string though.
|
||
|
||
* add an explicit "vertical" mode to format-table, so that "systemctl
|
||
status"-like outputs (i.e. with a series of field names left and values
|
||
right) become genuine first class citizens, and we gain automatic, sane JSON
|
||
output for them.
|
||
|
||
* Add a "systemctl list-units --by-slice" mode or so, which rearranges the
|
||
output of "systemctl list-units" slightly by showing the tree structure of
|
||
the slices, and the units attached to them.
|
||
|
||
* add "systemctl wait" or so, which does what "systemd-run --wait" does, but
|
||
for all units. It should be both a way to pin units into memory as well as a
|
||
wait to retrieve their exit data.
|
||
|
||
* show whether a service has out-of-date configuration in "systemctl status" by
|
||
using mtime data of ConfigurationDirectory=.
|
||
|
||
* "systemctl preset-all" should probably order the unit files it
|
||
operates on lexicographically before starting to work, in order to
|
||
ensure deterministic behaviour if two unit files conflict (like DMs
|
||
do, for example)
|
||
|
||
* add "systemctl start -v foobar.service" that shows logs of a service
|
||
while the start command runs. This is non-trivial to do without
|
||
races though, since we should flush out all journal messages before
|
||
returning from the "systemctl stop".
|
||
|
||
* systemctl: if some operation fails, show log output?
|
||
|
||
* Add a new verb "systemctl top"
|
||
|
||
* unit install:
|
||
- "systemctl mask" should find all names by which a unit is accessible
|
||
(i.e. by scanning for symlinks to it) and link them all to /dev/null
|
||
|
||
* nspawn:
|
||
- emulate /dev/kmsg using CUSE and turn off the syslog syscall
|
||
with seccomp. That should provide us with a useful log buffer that
|
||
systemd can log to during early boot, and disconnect container logs
|
||
from the kernel's logs.
|
||
- as soon as networkd has a bus interface, hook up --network-interface=,
|
||
--network-bridge= with networkd, to trigger netdev creation should an
|
||
interface be missing
|
||
- a nice way to boot up without machine id set, so that it is set at boot
|
||
automatically for supporting --ephemeral. Maybe hash the host machine id
|
||
together with the machine name to generate the machine id for the container
|
||
- fix logic always print a final newline on output.
|
||
https://github.com/systemd/systemd/pull/272#issuecomment-113153176
|
||
- should optionally support receiving WATCHDOG=1 messages from its payload
|
||
PID 1...
|
||
- optionally automatically add FORWARD rules to iptables whenever nspawn is
|
||
running, remove them when shut down.
|
||
- add support for sysext extensions, too. i.e. a new --extension= switch that
|
||
takes one or more arguments, and applies the extensions already during
|
||
startup.
|
||
- when main nspawn supervisor process gets suspended due to SIGSTOP/SIGTTOU
|
||
or so, freeze the payload too.
|
||
- support time namespaces
|
||
- on cgroupsv1 issue cgroup empty handler process based on host events, so
|
||
that we make cgroup agent logic safe
|
||
- add API to invoke binary in container, then use that as fallback in
|
||
"machinectl shell"
|
||
- make nspawn suitable for shell pipelines: instead of triggering a hangup
|
||
when input is finished, send ^D, which synthesizes an EOF. Then wait for
|
||
hangup or ^D before passing on the EOF.
|
||
- greater control over selinux label?
|
||
- support that /proc, /sys/, /dev are pre-mounted
|
||
- maybe allow TPM passthrough, backed by swtpm, and measure --image= hash
|
||
into its PCR 11, so that nspawn instances can be TPM enabled, and partake
|
||
in measurements/remote attestation and such. swtpm would run outside of
|
||
control of container, and ideally would itself bind its encryption keys to
|
||
host TPM.
|
||
- make boot assessment do something sensible in a container. i.e send an
|
||
sd_notify() from payload to container manager once boot-up is completed
|
||
successfully, and use that in nspawn for dealing with boot counting,
|
||
implemented in the partition table labels and directory names.
|
||
- optionally set up nftables/iptables routes that forward UDP/TCP traffic on
|
||
port 53 to resolved stub 127.0.0.54
|
||
- maybe optionally insert .nspawn file as GPT partition into images, so that
|
||
such container images are entirely stand-alone and can be updated as one.
|
||
- The subreaper logic we currently have seems overly complex. We should
|
||
investigate whether creating the inner child with CLONE_PARENT isn't better.
|
||
- Reduce the number of sockets that are currently in use and just rely on one
|
||
or two sockets.
|
||
- Support running nspawn as an unprivileged user.
|
||
|
||
* machined: add API to acquire UID range. add API to mount/dissect loopback
|
||
file. Both protected by PK. Then make nspawn use these APIs to run
|
||
unprivileged containers. i.e. push the truly privileged bits into machined,
|
||
so that the client side can remain entirely unprivileged, with SUID or
|
||
anything like that.
|
||
|
||
* machined:
|
||
- add an API so that libvirt-lxc can inform us about network interfaces being
|
||
removed or added to an existing machine
|
||
- "machinectl migrate" or similar to copy a container from or to a
|
||
difference host, via ssh
|
||
- introduce systemd-nspawn-ephemeral@.service, and hook it into
|
||
"machinectl start" with a new --ephemeral switch
|
||
- "machinectl status" should also show internal logs of the container in
|
||
question
|
||
- "machinectl history"
|
||
- "machinectl diff"
|
||
- "machinectl commit" that takes a writable snapshot of a tree, invokes a
|
||
shell in it, and marks it read-only after use
|
||
|
||
* udev:
|
||
- move to LGPL
|
||
- kill scsi_id
|
||
- add trigger --subsystem-match=usb/usb_device device
|
||
- reimport udev db after MOVE events for devices without dev_t
|
||
- re-enable ProtectClock= once only cgroupsv2 is supported.
|
||
See f562abe2963bad241d34e0b308e48cf114672c84.
|
||
|
||
* coredump:
|
||
- save coredump in Windows/Mozilla minidump format
|
||
- when truncating coredumps, also log the full size that the process had, and make a metadata field so we can report truncated coredumps
|
||
- add examples for other distros in ELF_PACKAGE_METADATA
|
||
|
||
* support crash reporting operation modes (https://live.gnome.org/GnomeOS/Design/Whiteboards/ProblemReporting)
|
||
|
||
* tmpfiles:
|
||
- apply "x" on "D" too (see patch from William Douglas)
|
||
- instead of ignoring unknown fields, reject them.
|
||
- creating new directories/subvolumes/fifos/device nodes
|
||
should not follow symlinks. None of the other adjustment or creation
|
||
calls follow symlinks.
|
||
- add --test mode
|
||
- teach tmpfiles.d q/Q logic something sensible in the context of XFS/ext4
|
||
project quota
|
||
- teach tmpfiles.d m/M to move / atomic move + symlink old -> new
|
||
|
||
* udev-link-config:
|
||
- Make sure ID_PATH is always exported and complete for
|
||
network devices where possible, so we can safely rely
|
||
on Path= matching
|
||
|
||
* sd-rtnl:
|
||
- add support for more attribute types
|
||
- inbuilt piping support (essentially degenerate async)? see loopback-setup.c and other places
|
||
|
||
* networkd:
|
||
- add more keys to [Route] and [Address] sections
|
||
- add support for more DHCPv4 options (and, longer term, other kinds of dynamic config)
|
||
- add reduced [Link] support to .network files
|
||
- properly handle routerless dhcp leases
|
||
- work with non-Ethernet devices
|
||
- dhcp: do we allow configuring dhcp routes on interfaces that are not the one we got the dhcp info from?
|
||
- the DHCP lease data (such as NTP/DNS) is still made available when
|
||
a carrier is lost on a link. It should be removed instantly.
|
||
- expose in the API the following bits:
|
||
- option 15, domain name
|
||
- option 12, hostname and/or option 81, fqdn
|
||
- option 123, 144, geolocation
|
||
- option 252, configure http proxy (PAC/wpad)
|
||
- provide a way to define a per-network interface default metric value
|
||
for all routes to it. possibly a second default for DHCP routes.
|
||
- allow Name= to be specified repeatedly in the [Match] section. Maybe also
|
||
support Name=foo*|bar*|baz ?
|
||
- whenever uplink info changes, make DHCP server send out FORCERENEW
|
||
|
||
* in networkd, when matching device types, fix up DEVTYPE rubbish the kernel passes to us
|
||
|
||
* Figure out how to do unittests of networkd's state serialization
|
||
|
||
* dhcp:
|
||
- figure out how much we can increase Maximum Message Size
|
||
|
||
* dhcp6:
|
||
- add functions to set previously stored IPv6 addresses on startup and get
|
||
them at shutdown; store them in client->ia_na
|
||
- write more test cases
|
||
- implement reconfigure support, see 5.3., 15.11. and 22.20.
|
||
- implement support for temporary adressess (IA_TA)
|
||
- implement dhcpv6 authentication
|
||
- investigate the usefulness of Confirm messages; i.e. are there any
|
||
situations where the link changes without any loss in carrier detection
|
||
or interface down
|
||
- some servers don't do rapid commit without a filled in IA_NA, verify
|
||
this behavior
|
||
- RouteTable= ?
|