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2013-09-17cgroup: get rid of MemorySoftLimit=Lennart Poettering
The cgroup attribute memory.soft_limit_in_bytes is unlikely to stay around in the kernel for good, so let's not expose it for now. We can readd something like it later when the kernel guys decided on a final API for this.
2013-09-17udev: path_id - fix by-path link generation for scm devicesSebastian Ott
Set some_transport = true to prevent scm devices from being ignored. Suggested-by: Harald Hoyer <harald@redhat.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
2013-09-17logind: extract has_vts() from can_multi_session()David Herrmann
We currently use seat_can_multi_session() to test for two things: * whether the seat can handle session-switching * whether the seat has VTs As both are currently logically equivalent, we didn't care. However, we want to allow session-switching on seats without VTs, so split this helper into: * seat_can_multi_session(): whether session-switching is supported * seat_has_vts(): whether the seat has VTs Note that only one seat on a system can have VTs. There is only one set of them. We automatically assign them to seat0 as usual. With this patch in place, we can easily add new session-switching/tracking methods without breaking any VT code as it is now protected by has_vts(), no longer by can_multi_session().
2013-09-17logind: fix session_activate(vtnr = 0)David Herrmann
VT numbers start with 1. If a session has vtnr == 0, we must not assume it is running on a VT. Note that this could trigger the assert() below as CreateSession() sets vtnr to 0, not <0.
2013-09-17logind: fix seat_can_tty() to check for VTsDavid Herrmann
A seat provides text-logins if it has VTs. This is always limited to seat0 so the seat_is_seat0() check is correct. However, if VTs are disabled, no seat provides text-logins so we also need to check for the console-fd. This was previously: return seat_is_vtconsole(); It looked right, but was functionally equivalent to seat_is_seat0(). The rename of this helper made it more obvious that it is missing the VT test.
2013-09-17logind: rename vtconsole to seat0David Herrmann
The seat->vtconsole member always points to the default seat seat0. Even if VTs are disabled, it's used as default seat. Therefore, rename it to seat0 to correctly state what it is. This also changes the seat files in /run from IS_VTCONSOLE to IS_SEAT0. It wasn't used by any code, yet, so this seems fine. While we are at it, we also remove every "if (s->vtconsole)" as this pointer is always valid!
2013-09-17logind: make Session.Activate() lazyDavid Herrmann
Currently, Activate() calls chvt(), which does an ioctl(VT_ACTIVATE) and immediately calls seat_set_active(). However, VTs are allowed to prevent being deactivated. Therefore, logind cannot be sure the VT_ACTIVATE call was actually successful. Furthermore, compositors often need to clean up their devices before they acknowledge the VT switch. The immediate call to seat_set_active() may modify underlying ACLs, though. Thus, some compositors may fail cleaning up their stuff. Moreover, the compositor being switched to (if listening to logind instead of VTs) will not be able to activate its devices if the old VT still has them active. We could simply add an VT_WAITACTIVE call, which blocks until the given VT is active. However, this can block forever if the compositor hangs. So to fix this, we make Activate() lazy. That is, it only schedules a session-switch but does not wait for it to complete. The caller can no longer rely on it being immediate. Instead, a caller is required to wait for the PropertiesChanged signal and read the "Active" field. We could make Activate() wait asynchronously for the session-switch to complete and then send the return-message afterwards. However, this would add a lot of state-tracking with no real gain: 1) Sessions normally don't care whether Activate() was actually successful as they currently _must_ wait for the VT activation to do anything for real. 2) Error messages for failed session switches can be printed by logind instead of the session issuing Activate(). 3) Sessions that require synchronous Activate() calls can simply issue the call and then wait for "Active" properties to change. This also allows them to implement their own timeout. This change prepares for multi-session on seats without VTs. Forced VT switches are always bad as compositors cannot perform any cleanup. This isn't strictly required, but may lead to loss of information and ambiguous error messages. So for multi-session on seats without VTs, we must wait for the current session to clean-up before finalizing the session-switch. This requires Activate() to be lazy as we cannot block here. Note that we can always implement a timeout which allows us to guarantee the session switch to happen. Nevertheless, this calls for a lazy Activate().
2013-09-17logind: add session controllersDavid Herrmann
A session usually has only a single compositor or other application that controls graphics and input devices on it. To avoid multiple applications from hijacking each other's devices or even using the devices in parallel, we add session controllers. A session controller is an application that manages a session. Specific API calls may be limited to controllers to avoid others from getting unprivileged access to restricted resources. A session becomes a controller by calling the RequestControl() dbus API call. It can drop it via ReleaseControl(). logind tracks bus-names to release the controller once an application closes the bus. We use the new bus-name tracking to do that. Note that during ReleaseControl() we need to check whether some other session also tracks the name before we remove it from the bus-name tracking list. Currently, we only allow one controller at a time. However, the public API does not enforce this restriction. So if it makes sense, we can allow multiple controllers in parallel later. Or we can add a "scope" parameter, which allows a different controller for graphics-devices, sound-devices and whatever you want. Note that currently you get -EBUSY if there is already a controller. You can force the RequestControl() call (root-only) to drop the current controller and recover the session during an emergency. To recover a seat, this is not needed, though. You can simply create a new session or force-activate it. To become a session controller, a dbus caller must either be root or the same user as the user of the session. This allows us to run a session compositor as user and we no longer need any CAP_SYS_ADMIN.
2013-09-17logind: add infrastructure to watch busnamesDavid Herrmann
If we want to track bus-names to allow exclusive resource-access, we need a way to get notified when a bus-name is gone. We make logind watch for NameOwnerChanged dbus events and check whether the name is currently watched. If it is, we remove it from the watch-list (notification for other objects can be added in follow-up patches).
2013-09-17logind: listen actively for session devicesDavid Herrmann
Session compositors need access to fbdev, DRM and evdev devices if they control a session. To make logind pass them to sessions, we need to listen for them actively. However, we avoid creating new seats for non master-of-seat devices. Only once a seat is created, we start remembering all other session devices. If the last master-device is removed (even if there are other non-master devices still available), we destroy the seat. This is the current behavior, but we need to explicitly implement it now as there may be non-master devices in the seat->devices list. Unlike master devices, we don't care whether our list of non-master devices is complete. We don't export this list but use it only as cache if sessions request these devices. Hence, if a session requests a device that is not in the list, we will simply look it up. However, once a session requested a device, we must be notified of "remove" udev events. So we must link the devices somehow into the device-list. Regarding the implementation, we now sort the device list by the "master" flag. This guarantees that master devices are at the front and non-master devices at the tail of the list. Thus, we can easily test whether a seat has a master device attached.
2013-09-17tmpfiles: support simple specifier expansion for specified pathsLennart Poettering
2013-09-17Make tmpdir removal asynchronousZbigniew Jędrzejewski-Szmek
https://bugs.freedesktop.org/show_bug.cgi?id=68232
2013-09-17man: add a list of environment variablesZbigniew Jędrzejewski-Szmek
2013-09-17specifier: rework specifier calls to return proper error messageLennart Poettering
Previously the specifier calls could only indicate OOM by returning NULL. With this change they will return negative errno-style error codes like everything else.
2013-09-16login: fix login_is_valid testZbigniew Jędrzejewski-Szmek
2013-09-16udev-rules: avoid erroring on trailing whitespaceDave Reisner
https://bugs.archlinux.org/task/36950
2013-09-16Verify validity of session name when received from outsideZbigniew Jędrzejewski-Szmek
Only ASCII letters and digits are allowed.
2013-09-16transaction.c: do not point users to logs when unit not foundZbigniew Jędrzejewski-Szmek
The logs are unlikely to contain any useful information in this case. Also, change "walked on cycle path" to "found dependency on", which is less technical and indicates the direction. With the old message, I was never sure if prior units depended on later ones, or vice versa. https://bugzilla.redhat.com/show_bug.cgi?id=996133 https://bugzilla.redhat.com/show_bug.cgi?id=997082
2013-09-16Assume that /proc/meminfo can be missingZbigniew Jędrzejewski-Szmek
Travis tests are failing, probably because /proc/meminfo is not available in the test environment. The same might be true in some virtualized systems, so just treat missing /proc/meminfo as a sign that hibernation is not possible.
2013-09-16cgroup: add missing equals for BlockIOWeightGao feng
2013-09-16swap: create .wants symlink to 'auto' swap devicesTom Gundersen
As we load unit files lazily, we need to make sure something pulls in swap units that should be started automatically, otherwise the default dependencies will never be applied. This partially reinstates code removed in commit 64347fc2b983f33e7efb0fd2bb44e133fb9f30f4. Also don't order swap devices after swap.target when they are 'nofail'.
2013-09-13Advertise hibernation only if there's enough free swapZbigniew Jędrzejewski-Szmek
Condition that is checked is taken from upower: active(anon) < free swap * 0.98 This is really stupid, because the kernel knows the situation better, e.g. there could be two swap files, and then hibernation would be impossible despite passing this check, or the kernel could start supporting compressed swap and/or compressed hibernation images, and then this this check would be too stringent. Nevertheless, until we have something better, this should at least return a true negative if there's no swap. Logging of capabilities in the journal is changed to not strip leading zeros. I consider this more readable anyway. http://cgit.freedesktop.org/upower/tree/src/up-daemon.c#n613 https://bugzilla.redhat.com/show_bug.cgi?id=1007059
2013-09-13libudev: fix move_later comparisonLukas Nykryn
At the beginning move_later is set to -1, but it is set to different value only if expression !move_later is true.
2013-09-13swap: fix reverse dependenciesTom Gundersen
Make sure swap.target correctly requires/wants the swap units. This fixes https://bugs.freedesktop.org/show_bug.cgi?id=69291. Reported-by: Hussam Al-Tayeb
2013-09-13core/cgroup: first print then freeLukas Nykryn
2013-09-13random-seed: we should return errno of failed loop_writeLukas Nykryn
2013-09-13cgroup: fix incorrectly setting memory cgroupGao feng
If the memory_limit of unit is -1, we should write "-1" to the file memory.limit_in_bytes. not the (unit64_t) -1. otherwise the memory.limit_in_bytes will be set to zero.
2013-09-13cgroup: correct the log informationGao feng
it should be memory.soft_limit_in_bytes.
2013-09-13cgroup: add the missing setting of variable's valueGao feng
set the value of variable "r" to the return value of cg_set_attribute.
2013-09-13automount: rename repeat_unmont to repeat_unmountDavid Mackey
Trivial cleanup of repeat_unmount() spelling.
2013-09-13cryptsetup-generator: allow specifying options in /proc/cmdlineTom Gundersen
The main usecase for this is to make it possible to use cryptsetup in the initrd without it having to include a host-specific /etc/crypttab. Tested-by: Thomas Bächler <thomas@archlinux.org>
2013-09-13cryptsetup-generator: don't create tmp+swap unitsTom Gundersen
2013-09-12shut up gcc complaining about freeing a const variableKay Sievers
2013-09-12core: notify triggered by socket of a serviceUmut Tezduyar
2013-09-12service: Implement 'on-watchdog' restart optionHannes Reinecke
Services using the watchdog option might want to be restarted only if the watchdog triggers.
2013-09-12journald: Log error when failed to get machine-id on startOlivier Brunel
Can help since the journal requires /etc/machine-id to exists in order to start, and will simply silently exit when it does not.
2013-09-12systemctl: process only signals for jobs we really wait forMichal Sekletar
wait_filter() callback shouldn't process JobRemove signals for arbitrary jobs. It should only deal with signals for jobs which are included in set of jobs we wait for.
2013-09-12Actually allow tabs in environment filesZbigniew Jędrzejewski-Szmek
Fixup for ac4c8d6da8b5e.
2013-09-12getty-generator: Enable getty on all active serial consoles.Michael Marineau
This enables a getty on active kernel consoles even when they are not the last one specified on the kernel command line and mapped to /dev/console. Now the order "console=ttyS0 console=tty0" works in addition to "console=tty0 console=ttyS0".
2013-09-11Allow tabs in environment filesZbigniew Jędrzejewski-Szmek
bash allows them, and so should we. string_has_cc is changed to allow tabs, and if they are not wanted, they must be now checked for explicitly. There are two other callers, apart from the env file loaders, and one already checked anyway, and the other is changed to check. https://bugs.freedesktop.org/show_bug.cgi?id=68592 https://bugs.gentoo.org/show_bug.cgi?id=481554
2013-09-11Add pam configuration to allow user sessions to work out of the boxZbigniew Jędrzejewski-Szmek
systemd-logind will start user@.service. user@.service unit uses PAM with service name 'systemd-user' to perform account and session managment tasks. Previously, the name was 'systemd-shared', it is now changed to 'systemd-user'. Most PAM installations use one common setup for different callers. Based on a quick poll, distributions fall into two camps: those that have system-auth (Redhat, Fedora, CentOS, Arch, Gentoo, Mageia, Mandriva), and those that have common-auth (Debian, Ubuntu, OpenSUSE). Distributions that have system-auth have just one configuration file that contains auth, password, account, and session blocks, and distributions that have common-auth also have common-session, common-password, and common-account. It is thus impossible to use one configuration file which would work for everybody. systemd-user now refers to system-auth, because it seems that the approach with one file is more popular and also easier, so let's follow that.
2013-09-11core: failed scope units may not be restartedLennart Poettering
We don't allow reusing of scopes.
2013-09-11sd-login: add a public accessor for the VT numberGiovanni Campagna
The VT number was already part of the DBus API, but was not exposed in the C API.
2013-09-11cryptsetup: Retry indefinitely if tries=0 option has been set.Thomas Bächler
When running from initrd, entering a wrong passphrase usually means that you cannot boot. Therefore, we allow trying indefinitely.
2013-09-11swap: handle nofail/noauto in coreTom Gundersen
2013-09-11mount: filesystems mounted in the initrd should not conflict with ↵Tom Gundersen
umount.target in the real root These mounts should be kept around and unmounted in the shutdown ramfs. Currently, we will still attempt to umount these in the final kill spree, but we should consider avoiding that too. Also, the should_umount function should be generalised and put into util.c or something like that, but we are still discussing precisely how.
2013-09-11mount: move device links handling from generatorTom Gundersen
This makes mount units work like swap units: when the backing device appears the mount unit will be started. v2: the device should want the mount unconditionally, not only for DefaultDependencies=yes
2013-09-11swap: backing device should unconditionally want swap unitTom Gundersen
There is no need to restrict this to only the 'nofail' case. In the '!nofail' case the unit is already wanted by swap.target, so this is not a functional change.
2013-09-11fstab-generator: use DefaultDependencies=yesTom Gundersen
This removes some redundancy between the generator and the core mount handling.
2013-09-10systemctl: show BlockIODeviceWeight for unitGao feng
We can use systemctl show unitname to show the BlockIODeviceWeight of unit.