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2016-08-19Merge pull request #3909 from poettering/mount-toolEvgeny Vereshchagin
add a new tool for creating transient mount and automount units
2016-08-19Merge pull request #3987 from keszybz/console-color-setupLennart Poettering
Rework console color setup
2016-08-19Merge pull request #3955 from keszybz/fix-preset-allLennart Poettering
Fix preset-all
2016-08-19Merge pull request #3961 from keszybz/pr/3924Lennart Poettering
Add documentation to #3924
2016-08-19man: document that "systemctl switch-root" tries hard to pass state across ↵Lennart Poettering
(#3995) As suggested: https://github.com/systemd/systemd/pull/3958#issuecomment-240410958 Let's document that we try hard to pass system state from the initrd to the host, and even compare the systemd binary paths.
2016-08-19terminal-util: use getenv_bool for $SYSTEMD_COLORSZbigniew Jędrzejewski-Szmek
This changes the semantics a bit: before, SYSTEMD_COLORS= would be treated as "yes", same as SYSTEMD_COLORS=xxx and SYSTEMD_COLORS=1, and only SYSTEMD_COLORS=0 would be treated as "no". Now, only valid booleans are treated as "yes". This actually matches how $SYSTEMD_COLORS was announced in NEWS.
2016-08-19man: describe what symlinks to unit do, and specify that presets must use ↵Zbigniew Jędrzejewski-Szmek
real names The man pages didn't ever mention that symlinks to units can be created, and what exactly this means. Fix that omission, and disallow presets on alias names.
2016-08-19man: minor wording fixesLennart Poettering
2016-08-19man: don't claim we replace spaces by dashes when cleaning up hostnamesLennart Poettering
Let's make sure the man page actually documents what is implemented, i.e. "Lennart's PC" turns into "LennartsPC" when we clean up the name.
2016-08-19man: document that static/transient hostnames may be 64 chars at maxLennart Poettering
2016-08-18logind: update empty and "infinity" handling for [User]TasksMax (#3835)Tejun Heo
The parsing functions for [User]TasksMax were inconsistent. Empty string and "infinity" were interpreted as no limit for TasksMax but not accepted for UserTasksMax. Update them so that they're consistent with other knobs. * Empty string indicates the default value. * "infinity" indicates no limit. While at it, replace opencoded (uint64_t) -1 with CGROUP_LIMIT_MAX in TasksMax handling. v2: Update empty string to indicate the default value as suggested by Zbigniew Jędrzejewski-Szmek. v3: Fixed empty UserTasksMax handling.
2016-08-19core: add RemoveIPC= settingLennart Poettering
This adds the boolean RemoveIPC= setting to service, socket, mount and swap units (i.e. all unit types that may invoke processes). if turned on, and the unit's user/group is not root, all IPC objects of the user/group are removed when the service is shut down. The life-cycle of the IPC objects is hence bound to the unit life-cycle. This is particularly relevant for units with dynamic users, as it is essential that no objects owned by the dynamic users survive the service exiting. In fact, this patch adds code to imply RemoveIPC= if DynamicUser= is set. In order to communicate the UID/GID of an executed process back to PID 1 this adds a new "user lookup" socket pair, that is inherited into the forked processes, and closed before the exec(). This is needed since we cannot do NSS from PID 1 due to deadlock risks, However need to know the used UID/GID in order to clean up IPC owned by it if the unit shuts down.
2016-08-18add a new tool for creating transient mount and automount unitsLennart Poettering
This adds "systemd-mount" which is for transient mount and automount units what "systemd-run" is for transient service, scope and timer units. The tool allows establishing mounts and automounts during runtime. It is very similar to the usual /bin/mount commands, but can pull in additional dependenices on access (for example, it pulls in fsck automatically), an take benefit of the automount logic. This tool is particularly useful for mount removable file systems (such as USB sticks), as the automount logic (together with automatic unmount-on-idle), as well as automatic fsck on first access ensure that the removable file system has a high chance to remain in a fully clean state even when it is unplugged abruptly, and returns to a clean state on the next re-plug. This is a follow-up for #2471, as it adds a simple client-side for the transient automount logic added in that PR. In later work it might make sense to invoke this tool automatically from udev rules in order to implement a simpler and safer version of removable media management á la udisks.
2016-08-18run: various minor improvementsLennart Poettering
Let's improve the --help text a bit, and other changes.
2016-08-17Merge pull request #3946 from keszybz/open-journal-rootLennart Poettering
Make journalctl more flexible
2016-08-14Merge pull request #3905 from htejun/cgroup-v2-cpuZbigniew Jędrzejewski-Szmek
core: add cgroup CPU controller support on the unified hierarchy (zj: merging not squashing to make it clear against which upstream this patch was developed.)
2016-08-14man: explain that *KeyIgnoreInhibited only apply to a subset of locksZbigniew Jędrzejewski-Szmek
Follow-up for #3924.
2016-08-12journalctl: allow --root argument for journal watchingZbigniew Jędrzejewski-Szmek
It is useful to look at a (possibly inactive) container or other os tree with --root=/path/to/container. This is similar to specifying --directory=/path/to/container/var/log/journal --directory=/path/to/container/run/systemd/journal (if using --directory multiple times was allowed), but doesn't require as much typing.
2016-08-12sd-journal: allow SYSTEM and CURRENT_USER flags with sd_j_open_directory[_fd]Zbigniew Jędrzejewski-Szmek
There is no reason not to. This makes journalctl -D ... --system work, useful for example when viewing files from a deactivated container.
2016-08-11man: add "timeout" to status table (#3919)Zbigniew Jędrzejewski-Szmek
2016-08-07core: add cgroup CPU controller support on the unified hierarchyTejun Heo
Unfortunately, due to the disagreements in the kernel development community, CPU controller cgroup v2 support has not been merged and enabling it requires applying two small out-of-tree kernel patches. The situation is explained in the following documentation. https://git.kernel.org/cgit/linux/kernel/git/tj/cgroup.git/tree/Documentation/cgroup-v2-cpu.txt?h=cgroup-v2-cpu While it isn't clear what will happen with CPU controller cgroup v2 support, there are critical features which are possible only on cgroup v2 such as buffered write control making cgroup v2 essential for a lot of workloads. This commit implements systemd CPU controller support on the unified hierarchy so that users who choose to deploy CPU controller cgroup v2 support can easily take advantage of it. On the unified hierarchy, "cpu.weight" knob replaces "cpu.shares" and "cpu.max" replaces "cpu.cfs_period_us" and "cpu.cfs_quota_us". [Startup]CPUWeight config options are added with the usual compat translation. CPU quota settings remain unchanged and apply to both legacy and unified hierarchies. v2: - Error in man page corrected. - CPU config application in cgroup_context_apply() refactored. - CPU accounting now works on unified hierarchy.
2016-08-07Merge pull request #3914 from keszybz/fix-man-linksLennart Poettering
Fix man links
2016-08-07man: add a table of possible exit statuses (#3910)Zbigniew Jędrzejewski-Szmek
2016-08-06Merge pull request #3884 from poettering/private-usersZbigniew Jędrzejewski-Szmek
2016-08-06man: fix some internal man page referencesZbigniew Jędrzejewski-Szmek
sd_journal-query_enumerate was an early draft, the name was changed to sd_j_enumerate_fields.
2016-08-06man: provide html links to a bunch of external man pagesZbigniew Jędrzejewski-Szmek
2016-08-06journal-gatewayd: add --directory option (#3913)Yi EungJun
Serve journals in the specified directory instead of default journals.
2016-08-05Merge pull request #3818 from poettering/exit-status-envZbigniew Jędrzejewski-Szmek
beef up /var/tmp and /tmp handling; set $SERVICE_RESULT/$EXIT_CODE/$EXIT_STATUS on ExecStop= and make sure root/nobody are always resolvable
2016-08-06networkd: add support to set STP (#3903)Susant Sahani
fixes #3881
2016-08-04nss-systemd: resolve root/nobody staticallyLennart Poettering
Let's extend nss-systemd to also synthesize user/group entries for the UIDs/GIDs 0 and 65534 which have special kernel meaning. Given that nss-systemd is listed in /etc/nsswitch.conf only very late any explicit listing in /etc/passwd or /etc/group takes precedence. This functionality is useful in minimal container-like setups that lack /etc/passwd files (or only have incompletely populated ones).
2016-08-04core: set $SERVICE_RESULT, $EXIT_CODE and $EXIT_STATUS in ↵Lennart Poettering
ExecStop=/ExecStopPost= commands This should simplify monitoring tools for services, by passing the most basic information about service result/exit information via environment variables, thus making it unnecessary to retrieve them explicitly via the bus.
2016-08-04Merge pull request #3885 from keszybz/help-outputLennart Poettering
Update help for "short-full" and shorten to 80 columns
2016-08-04networkd: add support to configure NOARP/ARP for interface (#3854)Susant Sahani
https://lists.freedesktop.org/archives/systemd-devel/2016-August/037268.html
2016-08-04man: describe list-dependencies --allZbigniew Jędrzejewski-Szmek
Meaning of --all was mentioned in list-dependencies description, but the this effect should also be mentioned in the description of the option itself.
2016-08-03Merge pull request #3820 from poettering/nspawn-resolvconfZbigniew Jędrzejewski-Szmek
nspawn resolv.conf handling improvements, and inherit $TERM all the way through nspawn → console login
2016-08-03journalctl: add new output mode "short-full" (#3880)Lennart Poettering
This new output mode formats all timestamps using the usual format_timestamp() call we use pretty much everywhere else. Timestamps formatted this way are some ways more useful than traditional syslog timestamps as they include weekday, month and timezone information, while not being much longer. They are also not locale-dependent. The primary advantage however is that they may be passed directly to journalctl's --since= and --until= switches as soon as #3869 is merged. While we are at it, let's also add "short-unix" to shell completion.
2016-08-03util-lib: make timestamp generation and parsing reversible (#3869)Lennart Poettering
This patch improves parsing and generation of timestamps and calendar specifications in two ways: - The week day is now always printed in the abbreviated English form, instead of the locale's setting. This makes sure we can always parse the week day again, even if the locale is changed. Given that we don't follow locale settings for printing timestamps in any other way either (for example, we always use 24h syntax in order to make uniform parsing possible), it only makes sense to also stick to a generic, non-localized form for the timestamp, too. - When parsing a timestamp, the local timezone (in its DST or non-DST name) may be specified, in addition to "UTC". Other timezones are still not supported however (not because we wouldn't want to, but mostly because libc offers no nice API for that). In itself this brings no new features, however it ensures that any locally formatted timestamp's timezone is also parsable again. These two changes ensure that the output of format_timestamp() may always be passed to parse_timestamp() and results in the original input. The related flavours for usec/UTC also work accordingly. Calendar specifications are extended in a similar way. The man page is updated accordingly, in particular this removes the claim that timestamps systemd prints wouldn't be parsable by systemd. They are now. The man page previously showed invalid timestamps as examples. This has been removed, as the man page shouldn't be a unit test, where such negative examples would be useful. The man page also no longer mentions the names of internal functions, such as format_timestamp_us() or UNIX error codes such as EINVAL.
2016-08-03core: add new PrivateUsers= option to service executionLennart Poettering
This setting adds minimal user namespacing support to a service. When set the invoked processes will run in their own user namespace. Only a trivial mapping will be set up: the root user/group is mapped to root, and the user/group of the service will be mapped to itself, everything else is mapped to nobody. If this setting is used the service runs with no capabilities on the host, but configurable capabilities within the service. This setting is particularly useful in conjunction with RootDirectory= as the need to synchronize /etc/passwd and /etc/group between the host and the service OS tree is reduced, as only three UID/GIDs need to match: root, nobody and the user of the service itself. But even outside the RootDirectory= case this setting is useful to substantially reduce the attack surface of a service. Example command to test this: systemd-run -p PrivateUsers=1 -p User=foobar -t /bin/sh This runs a shell as user "foobar". When typing "ps" only processes owned by "root", by "foobar", and by "nobody" should be visible.
2016-08-03nspawn: deprecate --share-system supportLennart Poettering
This removes the --share-system switch: from the documentation, the --help text as well as the command line parsing. It's an ugly option, given that it kinda contradicts the whole concept of PID namespaces that nspawn implements. Since it's barely ever used, let's just deprecate it and remove it from the options. It might be useful as a debugging option, hence the functionality is kept around for now, exposed via an undocumented $SYSTEMD_NSPAWN_SHARE_SYSTEM environment variable.
2016-08-03Merge pull request #3828 from keszybz/drop-systemd-vconsole-setup-serviceLennart Poettering
Update documentation for systemd-vconsole-setup
2016-08-02socket: add support to control no. of connections from one source (#3607)Susant Sahani
Introduce MaxConnectionsPerSource= that is number of concurrent connections allowed per IP. RFE: 1939
2016-08-02units: add graphical-session-pre.target user unit (#3848)Martin Pitt
This complements graphical-session.target for services which set up the environment (e. g. dbus-update-activation-environment) and need to run before the actual graphical session.
2016-08-01virt: detect bhyve (FreeBSD hypervisor) (#3840)Leonardo Brondani Schenkel
The CPUID and DMI vendor strings do not seem to be documented. Values were found experimentally and by inspecting the source code.
2016-07-31man: move description of kernel vconsole.conf overrides to vconsole.conf(5)Zbigniew Jędrzejewski-Szmek
They were outdated, and this way it's less likely that they'll get out of sync again. Anyway, it's easier for the reader to have the kernel and config file options next to one another.
2016-07-31Merge pull request #3843 from maxime1986/minor-systemd.resource-controlZbigniew Jędrzejewski-Szmek
2016-07-31documentation: cgroup-v1 and systemd user instanceMaxime de Roucy
Explain in the systemd.resource-control man that systemd user instance can't use resource control on cgroup-v1.
2016-07-31documentation: add cgroup-v2.txt linkMaxime de Roucy
add cgroup-v2.txt link in section "Unified and Legacy Control Group Hierarchies" of systemd.resource-control man.
2016-07-28Merge pull request #3742 from msoltyspl/vconfix2Zbigniew Jędrzejewski-Szmek
vconsole-setup: updates & fixes V2
2016-07-27vconsole: update man pageMichal Soltys
- about namespace - about udev rules
2016-07-26journald: deprecate SplitMode=login (#3805)Zbigniew Jędrzejewski-Szmek
In this mode, messages from processes which are not part of the session land in the main journal file, and only output of processes which are properly part of the session land in the user's journal. This is confusing, in particular because systemd-coredump runs outside of the login session. "Deprecate" SplitMode=login by removing it from documentation, to discourage people from using it.