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2016-06-23execute: add a new easy-to-use RestrictRealtime= option to unitsLennart Poettering
It takes a boolean value. If true, access to SCHED_RR, SCHED_FIFO and SCHED_DEADLINE is blocked, which my be used to lock up the system.
2016-06-22nspawn: improve man page (#3577)Lennart Poettering
This change documents the existance of the systemd-nspawn@.service template unit file, which was previously not mentioned at all. Since the unit file uses slightly different default than nspawn invoked from the command line, these defaults are now explicitly documented too. A couple of further additions and changes are made, too. Replaces: #3497
2016-06-22man: document that %f in units always unescapes (#3578)Lennart Poettering
2016-06-22watchdog: Support changing watchdog_usec during runtime (#3492)Minkyung
Add sd_notify() parameter to change watchdog_usec during runtime. Application can change watchdog_usec value by sd_notify like this. Example. sd_notify(0, "WATCHDOG_USEC=20000000"). To reset watchdog_usec as configured value in service file, restart service. Notice. sd_event is not currently supported. If application uses sd_event_set_watchdog, or sd_watchdog_enabled, do not use "WATCHDOG_USEC" option through sd_notify.
2016-06-21man: document some sd-bus functions (#3567)mahkoh
* sd_bus_add_match * sd_bus_get_fd * sd_bus_message_read_basic * sd_bus_process
2016-06-19man: match runlevel symlinks recommendation with our makefile (#3563)Lukáš Nykrýn
In makefile we create symlinks runlevel5.target to graphical.target and runlevel2-4.target to multi-user.target. Let's say the same thing in systemd.special manpage.
2016-06-16Merge pull request #3511 from andir/networkd-vrfZbigniew Jędrzejewski-Szmek
networkd: add support for vrf interfaces (#3316)
2016-06-16Merge pull request #3481 from poettering/relative-memcgLennart Poettering
various changes, most importantly regarding memory metrics
2016-06-16networkd: vrf: add support for enslaving devices to VRFsAndreas Rammhold
2016-06-16networkd: added support for vrf interfaces (#3316)Andreas Rammhold
2016-06-15core: set $JOURNAL_STREAM to the dev_t/ino_t of the journal stream of ↵Lennart Poettering
executed services This permits services to detect whether their stdout/stderr is connected to the journal, and if so talk to the journal directly, thus permitting carrying of metadata. As requested by the gtk folks: #2473
2016-06-14man: fix option letter in udevadm control -eZbigniew Jędrzejewski-Szmek
-x never worked, so let's just correct the man page. Fixes #3524.
2016-06-14man: minor fixesLennart Poettering
2016-06-14core: optionally, accept a percentage value for MemoryLimit= and related ↵Lennart Poettering
settings If a percentage is used, it is taken relative to the installed RAM size. This should make it easier to write generic unit files that adapt to the local system.
2016-06-14networkd: Tunnel add support to configure key for VTI/VTI6 (#3532)Susant Sahani
fixes #3298
2016-06-13Merge pull request #3498 from poettering/syscall-filter-fixesLennart Poettering
Syscall filter fixes, tighter nspawn seccomp sandbox by default
2016-06-13core: parse `rd.rescue` and `rd.emergency` as initrd-specific shorthands (#3488)Ivan Shapovalov
Typing `rd.rescue` is easier than `rd.systemd.unit=rescue.target`.
2016-06-13core: improve seccomp syscall grouping a bitLennart Poettering
This adds three new seccomp syscall groups: @keyring for kernel keyring access, @cpu-emulation for CPU emulation features, for exampe vm86() for dosemu and suchlike, and @debug for ptrace() and related calls. Also, the @clock group is updated with more syscalls that alter the system clock. capset() is added to @privileged, and pciconfig_iobase() is added to @raw-io. Finally, @obsolete is a cleaned up. A number of syscalls that never existed on Linux and have no number assigned on any architecture are removed, as they only exist in the man pages and other operating sytems, but not in code at all. create_module() is moved from @module to @obsolete, as it is an obsolete system call. mem_getpolicy() is removed from the @obsolete list, as it is not obsolete, but simply a NUMA API.
2016-06-10resolved: also add a way to flush all caches via the busLennart Poettering
And expose it in "resolve-tool --flush-caches".
2016-06-10man: document what SIGUSR1 and SIGUSR2 do to resolvedLennart Poettering
2016-06-10core/execute: add the magic character '!' to allow privileged execution (#3493)Alessandro Puccetti
This patch implements the new magic character '!'. By putting '!' in front of a command, systemd executes it with full privileges ignoring paramters such as User, Group, SupplementaryGroups, CapabilityBoundingSet, AmbientCapabilities, SecureBits, SystemCallFilter, SELinuxContext, AppArmorProfile, SmackProcessLabel, and RestrictAddressFamilies. Fixes partially https://github.com/systemd/systemd/issues/3414 Related to https://github.com/coreos/rkt/issues/2482 Testing: 1. Create a user 'bob' 2. Create the unit file /etc/systemd/system/exec-perm.service (You can use the example below) 3. sudo systemctl start ext-perm.service 4. Verify that the commands starting with '!' were not executed as bob, 4.1 Looking to the output of ls -l /tmp/exec-perm 4.2 Each file contains the result of the id command. ````````````````````````````````````````````````````````````````` [Unit] Description=ext-perm [Service] Type=oneshot TimeoutStartSec=0 User=bob ExecStartPre=!/usr/bin/sh -c "/usr/bin/rm /tmp/exec-perm*" ; /usr/bin/sh -c "/usr/bin/id > /tmp/exec-perm-start-pre" ExecStart=/usr/bin/sh -c "/usr/bin/id > /tmp/exec-perm-start" ; !/usr/bin/sh -c "/usr/bin/id > /tmp/exec-perm-star-2" ExecStartPost=/usr/bin/sh -c "/usr/bin/id > /tmp/exec-perm-start-post" ExecReload=/usr/bin/sh -c "/usr/bin/id > /tmp/exec-perm-reload" ExecStop=!/usr/bin/sh -c "/usr/bin/id > /tmp/exec-perm-stop" ExecStopPost=/usr/bin/sh -c "/usr/bin/id > /tmp/exec-perm-stop-post" [Install] WantedBy=multi-user.target] `````````````````````````````````````````````````````````````````
2016-06-10nspawn: introduce --notify-ready=[no|yes] (#3474)Alessandro Puccetti
This the patch implements a notificaiton mechanism from the init process in the container to systemd-nspawn. The switch --notify-ready=yes configures systemd-nspawn to wait the "READY=1" message from the init process in the container to send its own to systemd. --notify-ready=no is equivalent to the previous behavior before this patch, systemd-nspawn notifies systemd with a "READY=1" message when the container is created. This notificaiton mechanism uses socket file with path relative to the contanier "/run/systemd/nspawn/notify". The default values it --notify-ready=no. It is also possible to configure this mechanism from the .nspawn files using NotifyReady. This parameter takes the same options of the command line switch. Before this patch, systemd-nspawn notifies "ready" after the inner child was created, regardless the status of the service running inside it. Now, with --notify-ready=yes, systemd-nspawn notifies when the service is ready. This is really useful when there are dependencies between different contaniers. Fixes https://github.com/systemd/systemd/issues/1369 Based on the work from https://github.com/systemd/systemd/pull/3022 Testing: Boot a OS inside a container with systemd-nspawn. Note: modify the commands accordingly with your filesystem. 1. Create a filesystem where you can boot an OS. 2. sudo systemd-nspawn -D ${HOME}/distros/fedora-23/ sh 2.1. Create the unit file /etc/systemd/system/sleep.service inside the container (You can use the example below) 2.2. systemdctl enable sleep 2.3 exit 3. sudo systemd-run --service-type=notify --unit=notify-test ${HOME}/systemd/systemd-nspawn --notify-ready=yes -D ${HOME}/distros/fedora-23/ -b 4. In a different shell run "systemctl status notify-test" When using --notify-ready=yes the service status is "activating" for 20 seconds before being set to "active (running)". Instead, using --notify-ready=no the service status is marked "active (running)" quickly, without waiting for the 20 seconds. This patch was also test with --private-users=yes, you can test it just adding it at the end of the command at point 3. ------ sleep.service ------ [Unit] Description=sleep After=network.target [Service] Type=oneshot ExecStart=/bin/sleep 20 [Install] WantedBy=multi-user.target ------------ end ------------
2016-06-10networkd: add support to configure VLAN on bridge portsTobias Jungel
2016-06-07networkd: rename IPv6AcceptRouterAdvertisements to IPv6AcceptRALennart Poettering
The long name is just too hard to type. We generally should avoid using acronyms too liberally, if they aren't established enough, but it appears that "RA" is known well enough. Internally we call the option "ipv6_accept_ra" anyway, and the kernel also exposes it under this name. Hence, let's rename the IPv6AcceptRouterAdvertisements= setting and the [IPv6AcceptRouterAdvertisements] section to IPv6AcceptRA= and [IPv6AcceptRA]. The old setting IPv6AcceptRouterAdvertisements= is kept for compatibility with older configuration. (However the section [IPv6AcceptRouterAdvertisements] is not, as it was never available in a published version of systemd.
2016-06-07Merge pull request #3394 from poettering/triple-tstampLennart Poettering
timestamping improvements and IPv6 RA revamp
2016-06-06os-release: Add VERSION_CODENAME field (#3445)Benjamin Drung
Debian and their derivatives (Ubuntu, Trisquel, etc.) use a code name for their repositories. Thus record the code name in os-release for processing. Closes systemd/systemd#3429
2016-06-06network: beef up ipv6 RA support considerablyLennart Poettering
This reworks sd-ndisc and networkd substantially to support IPv6 RA much more comprehensively. Since the API is extended quite a bit networkd has been ported over too, and the patch is not as straight-forward as one could wish. The rework includes: - Support for DNSSL, RDNSS and RA routing options in sd-ndisc and networkd. Two new configuration options have been added to networkd to make this configurable. - sd-ndisc now exposes an sd_ndisc_router object that encapsulates a full RA message, and has direct, friendly acessor functions for the singleton RA properties, as well as an iterative interface to iterate through known and unsupported options. The router object may either be retrieved from the wire, or generated from raw data. In many ways the sd-ndisc API now matches the sd-lldp API, except that no implicit database of seen data is kept. (Note that sd-ndisc actually had a half-written, but unused implementaiton of such a store, which is removed now.) - sd-ndisc will now collect the reception timestamps of RA, which is useful to make sd_ndisc_router fully descriptive of what it covers. Fixes: #1079
2016-06-06machinectl: Added stop as alias for poweroff (#3406)Christian Rebischke
2016-06-05cgtop: add option to show a single cgroup subtree (#3413)Alessandro Puccetti
When many services are running, it was difficult to see only the interesting ones. This patch allows to show only the subtree of interest.
2016-06-03core: Restrict mmap and mprotect with PAGE_WRITE|PAGE_EXEC (#3319) (#3379)Topi Miettinen
New exec boolean MemoryDenyWriteExecute, when set, installs a seccomp filter to reject mmap(2) with PAGE_WRITE|PAGE_EXEC and mprotect(2) with PAGE_EXEC.
2016-06-03core: always use "infinity" for no upper limit instead of "max" (#3417)Tejun Heo
Recently added cgroup unified hierarchy support uses "max" in configurations for no upper limit. While consistent with what the kernel uses for no upper limit, it is inconsistent with what systemd uses for other controllers such as memory or pids. There's no point in introducing another term. Update cgroup unified hierarchy support so that "infinity" is the only term that systemd uses for no upper limit.
2016-06-01core: add pre-defined syscall groups to SystemCallFilter= (#3053) (#3157)Topi Miettinen
Implement sets of system calls to help constructing system call filters. A set starts with '@' to distinguish from a system call. Closes: #3053, #3157
2016-05-31man: document that systemctl -ff reboot does not require PID 1 to work (#3310)Lennart Poettering
As suggested in https://github.com/systemd/systemd/issues/3282#issuecomment-220264509
2016-05-30networkd: bridge add support to configure VLAN filtering (#3344)Tobias Jungel
This patch implements support for IFLA_BR_VLAN_FILTERING configuration.
2016-05-30doc: clarify systemd.exec's paths definition (#3368)Alessandro Puccetti
Definitions of ReadWriteDirectories=, ReadOnlyDirectories=, InaccessibleDirectories=, WorkingDirectory=, and RootDirecory= were not clear. This patch specifies when they are relative to the host's root directory and when they are relative to the service's root directory. Fixes #3248
2016-05-30man: fix recurring typoLuca Bruno
2016-05-28man: cite systemd.offline-updates(7) instead of linking to old wiki pageZbigniew Jędrzejewski-Szmek
2016-05-28man: punctuation fixesZbigniew Jędrzejewski-Szmek
Fixes #3376.
2016-05-27core: add cgroup memory controller support on the unified hierarchy (#3315)Tejun Heo
On the unified hierarchy, memory controller implements three control knobs - low, high and max which enables more useable and versatile control over memory usage. This patch implements support for the three control knobs. * MemoryLow, MemoryHigh and MemoryMax are added for memory.low, memory.high and memory.max, respectively. * As all absolute limits on the unified hierarchy use "max" for no limit, make memory limit parse functions accept "max" in addition to "infinity" and document "max" for the new knobs. * Implement compatibility translation between MemoryMax and MemoryLimit. v2: - Fixed missing else's in config_parse_memory_limit(). - Fixed missing newline when writing out drop-ins. - Coding style updates to use "val > 0" instead of "val". - Minor updates to documentation.
2016-05-23man: explain what list-units does a bit better (#3324)Zbigniew Jędrzejewski-Szmek
https://bugzilla.redhat.com/show_bug.cgi?id=1338584
2016-05-20Merge pull request #3290 from htejun/cgroup2-io-compatLennart Poettering
Implement compat translation between IO* and BlockIO* settings
2016-05-20Merge pull request #3235 from dkg/hwaddr-cleanupTom Gundersen
minor improvements for dealing with MAC Addresses
2016-05-19systemctl: restore the no-sync option for legacy halt (#3249)tblume
The sync() call on shutdown had been removed with commit 57371e5829a61e5ee6c9f98404dfc729d6c62608 together with the no-sync option for the shutdown commands. The sync call was restored in commit 4a3ad39957399c4a30fc472a804e72907ecaa4f9 but the no-sync option wasn't re-added. I think we should restore this option at least for the legacy halt command.
2016-05-18core: translate between IO and BlockIO settings to ease transitionTejun Heo
Due to the substantial interface changes in cgroup unified hierarchy, new IO settings are introduced. Currently, IO settings apply only to unified hierarchy and BlockIO to legacy. While the transition is necessary, it's painful for users to have to provide configs for both. This patch implements translation from one config set to another for configs which make sense. * The translation takes place during application of the configs. Users won't see IO or BlockIO settings appearing without being explicitly created. * The translation takes place only if there is no config for the matching cgroup hierarchy type at all. While this doesn't provide comprehensive compatibility, it should considerably ease transition to the new IO settings which are a superset of BlockIO settings. v2: - Update test-cgroup-mask.c so that it accounts for the fact that CGROUP_MASK_IO and CGROUP_MASK_BLKIO move together. Also, test/parent.slice now sets IOWeight instead of BlockIOWeight.
2016-05-18core: add support for IOReadIOPSMax and IOWriteIOPSMaxTejun Heo
cgroup IO controller supports maximum limits for both bandwidth and IOPS but systemd resource control currently only supports bandwidth limits. This patch adds support for IOReadIOPSMax and IOWriteIOPSMax when unified cgroup hierarchy is in use. It isn't difficult to also add BlockIOReadIOPS and BlockIOWriteIOPS for legacy hierarchies but IO control on legacy hierarchies is half-broken anyway, so let's leave it alone for now.
2016-05-17coredump: Improve man pagesPeter Mattern
2016-05-17networkd: Add EmitRouter= option for DHCP Server (#3251)Clemens Gruber
Add an option to disable appending DHCP option 3 (Router) to the DHCP OFFER and ACK packets. This commit adds the boolean option EmitRouter= for the [DHCPServer] section in .network files. Rationale: On embedded devices, it is very useful to have a DHCP server running on an USB OTG ethernet gadget interface to avoid manual setup on the client PCs, but it should only serve IP addresses, no route(r)s. Otherwise, Windows clients experience network connectivity issues, due to them using the address set in DHCP option 3 as default gateway. Signed-off-by: Clemens Gruber <clemens.gruber@pqgruber.com>
2016-05-17man: clarify different uses of MACAddressDaniel Kahn Gillmor
Improve the networkd documentation to clarify that Match.MACAddress is for selection, but Link.MACAddress describes an action to be taken.
2016-05-16man: clarify that IOXyz= only applies to the unified hierarchy, and ↵Lennart Poettering
BlockIOXyz= to the legacy hierarchy With this change for each setting we say which hierarachy it applies to briefly in the first sentence of the description, plus in longer form in an extra pargraph at the end, with a recommendation for the counterpart of the option in the other hierarchy. Also adds markup and the "=" suffix to all mentioned settings.
2016-05-16Merge pull request #3193 from htejun/cgroup-io-controllerLennart Poettering
core: add io controller support on the unified hierarchy