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path: root/src/core/mount.c
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2014-11-28mount: add remote-fs dependencies if needed after changeChris Leech
This is an attempt to add it the remote-fs dependencies to a mount unit if the options change, like when the utab options are picked up after mountinfo has already been processed. It just adds the remote-fs dependencies, leaving the local-fs ones in place. With this change I always get mount units with proper remote-fs dependencies when mounted with the _netdev option.
2014-11-28mount: monitor for utab changes with inotifyChris Leech
Parsing the mount table with libmount races against the mount command, which will handle the actual mounting before updating utab. This means the poll event on /proc/self/mountinfo can kick of a reparse in systemd before the utab information is available. This change adds in an additional event source using inotify to watch for changes to utab. It only watches for IN_MOVED_TO events, matching libmount behavior of always overwriting this file using rename(2). This does add a second pass through the mount table parsing when utab is updated.
2014-11-28mount: use libmount to enumerate /proc/self/mountinfoChris Leech
This lets libmount add in user options from /run/mount/utab, like _netdev which is needed to get proper ordering against remote-fs.target
2014-11-28treewide: no need to negate errno for log_*_errno()Michal Schmidt
It corrrectly handles both positive and negative errno values.
2014-11-28treewide: auto-convert the simple cases to log_*_errno()Michal Schmidt
As a followup to 086891e5c1 "log: add an "error" parameter to all low-level logging calls and intrdouce log_error_errno() as log calls that take error numbers", use sed to convert the simple cases to use the new macros: find . -name '*.[ch]' | xargs sed -r -i -e \ 's/log_(debug|info|notice|warning|error|emergency)\("(.*)%s"(.*), strerror\(-([a-zA-Z_]+)\)\);/log_\1_errno(-\4, "\2%m"\3);/' Multi-line log_*() invocations are not covered. And we also should add log_unit_*_errno().
2014-11-28log: fix order of log_unit_struct() to match other logging callsLennart Poettering
Also, while we are at it, introduce some syntactic sugar for creating ERRNO= and MESSAGE= structured logging fields.
2014-11-27log: rearrange log function namingLennart Poettering
- Rename log_meta() → log_internal(), to follow naming scheme of most other log functions that are usually invoked through macros, but never directly. - Rename log_info_object() to log_object_info(), simply because the object should be before any other parameters, to follow OO-style programming style.
2014-11-23manager: only issue overmount warning when the check succeededZbigniew Jędrzejewski-Szmek
If for any reason the check failed (selinux?), we would still issue the warning. Check the return status.
2014-11-05core: introduce new Delegate=yes/no property controlling creation of cgroup ↵Lennart Poettering
subhierarchies For priviliged units this resource control property ensures that the processes have all controllers systemd manages enabled. For unpriviliged services (those with User= set) this ensures that access rights to the service cgroup is granted to the user in question, to create further subgroups. Note that this only applies to the name=systemd hierarchy though, as access to other controllers is not safe for unpriviliged processes. Delegate=yes should be set for container scopes where a systemd instance inside the container shall manage the hierarchies below its own cgroup and have access to all controllers. Delegate=yes should also be set for user@.service, so that systemd --user can run, controlling its own cgroup tree. This commit changes machined, systemd-nspawn@.service and user@.service to set this boolean, in order to ensure that container management will just work, and the user systemd instance can run fine.
2014-10-28core: send sigabrt on watchdog timeout to get the stacktraceUmut Tezduyar Lindskog
if sigabrt doesn't do the job, follow regular shutdown routine, sigterm > sigkill.
2014-10-02Revert "mount: order options before other arguments to mount"Lennart Poettering
This reverts commit 141a1ceaa62578f1ed14f04cae2113dd0f49fd7f. People should fix their libc's getopt(), instead of us using a weird option ordering...
2014-09-18mount: order options before other arguments to mountEmil Renner Berthing
2014-09-05exec: factor out most function arguments of exec_spawn() to ExecParametersDaniel Mack
This way, the list of arguments to that function gets more comprehensive, and we can get around passing lots of NULL and 0 arguments from socket.c, swap.c and mount.c. It also allows for splitting up the code in exec_spawn(). While at it, make ExecContext const in execute.c.
2014-08-15core: Refuse mount on symlinkTimofey Titovets
2014-08-14core: do not add default dependencies to /usr mount unitJon Severinsson
This makes no difference if /usr was mounted in the initrd, and brings the behaviour of legacy systems closer to those with a propper initrd.
2014-06-30Move x-systemd-device.timeout handling from core to fstab-generatorZbigniew Jędrzejewski-Szmek
Instead of adjusting job timeouts in the core, let fstab-generator write out a dropin snippet with the appropriate JobTimeout. x-systemd-device.timeout option is removed from Options= line in the generated unit. The functions to write dropins are moved from core/unit.c to shared/dropin.c, to make them available outside of core. generator.c is moved to libsystemd-label, because it now uses functions defined in dropin.c, which are in libsystemd-label.
2014-06-16mount: add new SloppyOptions= setting for mount units, mapping to mount(8)'s ↵Lennart Poettering
"-s" switch
2014-06-16mount: tell /bin/mount to never touch /etc/mtabLennart Poettering
/etc/mtab should die die die. It's sad enough util-linux still contains support for it, but we don't have to partake in that charade, so let's turn this off. This is in-line with the fact that since years we already have been "tainting" systemd if we detect /etc/mtab not being a symlink... Of course, util-linux is currently broken, and still touches /etc/mtab, weven if we pass "--no-mtab" to it: https://bugzilla.redhat.com/show_bug.cgi?id=1109367 But hey, let's hope that gets fixed quickly, even if total removal of /etc/mtab support from util-linux might not happen so quickly...
2014-06-07core: allow transient mount unitsTom Gundersen
For now only What=, Options=, Type= are supported, and Where= is deduced from the unit name.
2014-03-24sd-event: rework API to support CLOCK_REALTIME_ALARM and ↵Lennart Poettering
CLOCK_BOOTTIME_ALARM, too
2014-03-19core: rework context initialization/destruction logicLennart Poettering
Let's automatically initialize the kill, exec and cgroup contexts of the various unit types when the object is constructed, instead of invididually in type-specific code. Also, when PrivateDevices= is set, set DevicePolicy= to closed.
2014-03-07fstab-generator: merge /proc/cmdline parsing loops into oneLennart Poettering
2014-03-03core: introduce new RuntimeDirectory= and RuntimeDirectoryMode= unit settingsLennart Poettering
As discussed on the ML these are useful to manage runtime directories below /run for services.
2014-02-26mount: don't fire PropertiesChanged signals for mounts that are stoppedLennart Poettering
2014-02-26mount: don't send out PropertiesChanged message if actually nothing got changedLennart Poettering
2014-02-26mount: minor modernizationLennart Poettering
2014-02-24core: add global settings for enabling CPUAccounting=, MemoryAccounting=, ↵Lennart Poettering
BlockIOAccounting= for all units at once
2014-02-20api: in constructor function calls, always put the returned object pointer ↵Lennart Poettering
first (or second) Previously the returned object of constructor functions where sometimes returned as last, sometimes as first and sometimes as second parameter. Let's clean this up a bit. Here are the new rules: 1. The object the new object is derived from is put first, if there is any 2. The object we are creating will be returned in the next arguments 3. This is followed by any additional arguments Rationale: For functions that operate on an object we always put that object first. Constructors should probably not be too different in this regard. Also, if the additional parameters might want to use varargs which suggests to put them last. Note that this new scheme only applies to constructor functions, not to all other functions. We do give a lot of freedom for those. Note that this commit only changes the order of the new functions we added, for old ones we accept the wrong order and leave it like that.
2014-01-29core: make sure to always go through both SIGTERM and SIGKILL states of unitsLennart Poettering
Given that we now have KillMode=mixed where SIGTERM might kill a smaller set than SIGKILL we need to make sure to always go explicitly throught the SIGKILL state to get the right end result.
2014-01-27core: add function to tell when job will time outZbigniew Jędrzejewski-Szmek
Things will continue when either the job timeout or the unit timeout is reached. Add functionality to access that info.
2014-01-07mount: don't creat local-fs.target links for mount units when runnin in user ↵Lennart Poettering
mode
2014-01-02Use format patterns for usec_t, pid_t, nsec_t, usec_tZbigniew Jędrzejewski-Szmek
It is nicer to predefine patterns using configure time check instead of using casts everywhere. Since we do not need to use any flags, include "%" in the format instead of excluding it like PRI* macros.
2013-12-22sd-daemon: introduce sd_watchdog_enabled() for parsing $WATCHDOG_USECLennart Poettering
Also, introduce a new environment variable named $WATCHDOG_PID which cotnains the PID of the process that is supposed to send the keep-alive events. This is similar how $LISTEN_FDS and $LISTEN_PID work together, and protects against confusing processes further down the process tree due to inherited environment.
2013-12-22core: no need to list properties for PropertiesChanged messages anymoreLennart Poettering
Since the vtable includes this information anyway, let's just use that
2013-12-02bus: add .busname unit type to implement kdbus-style bus activationLennart Poettering
2013-11-27service: add the ability for units to join other unit's PrivateNetwork= and ↵Lennart Poettering
PrivateTmp= namespaces
2013-11-25core: set some event source priorities to enforce dispatching orderLennart Poettering
2013-11-25swap: split state machine state ACTIVATING into twoLennart Poettering
We expect the event on /proc/swaps before we expect the SIGCHILD, reflect this in the state machine.
2013-11-20core: convert PID 1 to libsystemd-busLennart Poettering
This patch converts PID 1 to libsystemd-bus and thus drops the dependency on libdbus. The only remaining code using libdbus is a test case that validates our bus marshalling against libdbus' marshalling, and this dependency can be turned off. This patch also adds a couple of things to libsystem-bus, that are necessary to make the port work: - Synthesizing of "Disconnected" messages when bus connections are severed. - Support for attaching multiple vtables for the same interface on the same path. This patch also fixes the SetDefaultTarget() and GetDefaultTarget() bus calls which used an inappropriate signature. As a side effect we will now generate PropertiesChanged messages which carry property contents, rather than just invalidation information.
2013-11-05Configurable Timeouts/Restarts default valuesOleksii Shevchuk
https://bugs.freedesktop.org/show_bug.cgi?id=71132 Patch adds DefaultTimeoutStartSec, DefaultTimeoutStopSec, DefaultRestartSec configuration options to manager configuration file.
2013-10-19mount/service: drop FsckPassNo supportTom Gundersen
We now treat passno as boleans in the generators, and don't need this any more. fsck itself is able to sequentialize checks on the same local media, so in the common case the ordering is redundant. It is still possible to force an order by using .d fragments, in case that is desired.
2013-10-05core: do not add "what" to RequiresMountsFor for network mountsZbigniew Jędrzejewski-Szmek
For cifs mount like //server/share, we would get RequiresMountsFor=/server/share, which probably isn't harmful, but quite confusing. Unfortunately a bunch of static functions had to be moved up, but patch is really one line.
2013-10-04mount: check for NULL before reading pm->whatDave Reisner
Since a57f7e2c828b85, a mount unit with garbage in it would cause systemd to crash on loading it. ref: https://bugs.freedesktop.org/show_bug.cgi?id=70148
2013-10-03systemd: order remote mounts from mountinfo before remote-fs.targetZbigniew Jędrzejewski-Szmek
Usually the network is stopped before filesystems are umounted. Ordering network filesystems before remote-fs.target means that their unmounting will be performed earlier, and can terminate sucessfully. https://bugs.freedesktop.org/show_bug.cgi?id=70002
2013-09-26core: rework how we match mount units against each otherLennart Poettering
Previously to automatically create dependencies between mount units we matched every mount unit agains all others resulting in O(n^2) complexity. On setups with large amounts of mount units this might make things slow. This change replaces the matching code to use a hashtable that is keyed by a path prefix, and points to a set of units that require that path to be around. When a new mount unit is installed it is hence sufficient to simply look up this set of units via its own file system paths to know which units to order after itself. This patch also changes all unit types to only create automatic mount dependencies via the RequiresMountsFor= logic, and this is exposed to the outside to make things more transparent. With this change we still have some O(n) complexities in place when handling mounts, but that's currently unavoidable due to kernel APIs, and still substantially better than O(n^2) as before. https://bugs.freedesktop.org/show_bug.cgi?id=69740
2013-09-25cgroup: if we do a cgroup operation then do something on all supported ↵Lennart Poettering
controllers Previously we did operations like attach, trim or migrate only on the controllers that were enabled for a specific unit. With this changes we will now do them for all supproted controllers, and fall back to all possible prefix paths if the specified paths do not exist. This fixes issues if a controller is being disabled for a unit where it was previously enabled, and makes sure that all processes stay as "far down" the tree as groups exist.
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
2013-07-18mount: also exclude /usr from unmount at shutdownLennart Poettering
2013-07-04core/mount.c:mount_dump(): don't segfault, if mount is not mounted anymoreHarald Hoyer
Don't segfault, if m->from_proc_self_mountinfo and m->from_fragment is false. https://bugzilla.redhat.com/show_bug.cgi?id=957783#c9