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"systemctl list-machines" shows one line per local container which
includes the current system state of the container, the number of failed
units as well as the number of currently queued jobs.
If "systemctl switch-root" is called with a specific "INIT" or
/proc/cmdline contains "init=", then systemd would not serialize
itsself.
Let systemctl check, if the new init is in the standard systemd
installation path and if so, clear the INIT parameter,
to let systemd serialize itsself.
The code for parsing these properties is shared with "systemctl
set-property", which means all the resource control settings are
immediately available.
According to Wikipedia it is customary to specify hardware metrics and
transfer speeds to the basis 1000 (SI decimal), while software metrics
and physical volatile memory (RAM) sizes to the basis 1024 (IEC binary).
So far we specified everything in IEC, let's fix that and be more
true to what's otherwise customary. Since we don't want to parse "Mi"
instead of "M" we document each time what the context used is.
get_next_elapse() will always fill 'next' with values when it
returns >= 0. Hence, the compiler is wrong about this warning.
Initialize 'next' nevertheless.
src/systemctl/systemctl.c: In function ‘list_timers’:
src/systemctl/systemctl.c:953:43: warning: ‘next.monotonic’ may be used
uninitialized in this function [-Wmaybe-uninitialized]
converted = nw.realtime - (nw.monotonic - next.monotonic);
^
In file included from ./src/shared/log.h:30:0,
from src/systemctl/systemctl.c:46:
./src/shared/macro.h:137:38: warning: ‘next.realtime’ may be used
uninitialized in this function [-Wmaybe-uninitialized]
_a < _b ? _a : _b; \
^
src/systemctl/systemctl.c:933:32: note: ‘next.realtime’ was declared here
dual_timestamp next;
^
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.
- turn strv_merge into strv_extend_strv.
appending strv b to the end of strv a instead of creating a new strv
- strv_append: remove in favor of strv_extend and strv_push.
- strv_remove: write slightly more elegant
- strv_remove_prefix: remove unused function
- strv_overlap: use strv_contains
- strv_printf: STRV_FOREACH handles NULL correctly
Not long ago a failed command would print:
"Failed to start something.service: ..."
regardless of whether the command was to start/stop/restart/etc.
With e3e0314 this was improved to print the method used. E.g. for stopping:
"Failed to StopUnit something.service: ..."
This patch matches the method to a more human readable word. E.g:
"Failed to stop something.service: ..."
We need to properly initialize all error structs before use and free
them after use.
Also, there's no point in flushing stdout if we output a \n anyway...
wait_for_jobs was ignoring the errors from the jobs stored in r.
It would only ever return whether the call to sd_bus_remove_filter
went ok. This patch changes it to return the first job related error
encountered. If a job related error is found, then the result of the
call to sd_bus_remove_filter is ignored.
wait_for_jobs was a bit hard to read so I split it up to avoid
the goto and deep nesting.
The only problem is that libgen.h #defines basename to point to it's
own broken implementation instead of the GNU one. This can be fixed
by #undefining basename.
- Add space between if/for and the opening parentheses
- Place the opening brace on same line as the function (not for udev)
From the CODING_STYLE
Try to use this:
void foo() {
}
instead of this:
void foo()
{
}
Those files can be in a completely deferent format and also
arbitrarily long, and usually contain information about other
stuff. If we ever add SourceLine= or SourceLines= in addition
to SourcePath=, and can show the relevant information only, this
commit can be reverted.
Message handler callbacks can be simplified drastically if the
dispatcher automatically replies to method calls if errors are returned.
Thus: add an sd_bus_error argument to all message handlers. When we
dispatch a message handler and it returns negative or a set sd_bus_error
we send this as message error back to the client. This means errors
returned by handlers by default are given back to clients instead of
rippling all the way up to the event loop, which is desirable to make
things robust.
As a side-effect we can now easily turn the SELinux checks into normal
function calls, since the method call dispatcher will generate the right
error replies automatically now.
Also, make sure we always pass the error structure to all property and
method handlers as last argument to follow the usual style of passing
variables for return values as last argument.
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.
src/systemctl/systemctl.c: In function ‘get_listening’:
src/systemctl/systemctl.c:535:25: warning: declaration of ‘listen’ shadows a global declaration [-Wshadow]
src/systemctl/systemctl.c: In function ‘list_sockets’:
src/systemctl/systemctl.c:690:44: warning: declaration of ‘listen’ shadows a global declaration [-Wshadow]
reboot syscall can be performed with an additional argument. In some
systems this functionality can be useful to modify the mode of the
next boot performed by the bootloader.
Since the invention of read-only memory, write-only memory has been
considered deprecated. Where appropriate, either make use of the
value, or avoid writing it, to make it clear that it is not used.
This extends 62678ded 'efi: never call qsort on potentially
NULL arrays' to all other places where qsort is used and it
is not obvious that the count is non-zero.
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.
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.
This patch allows user to set up BlockIODeviceWeight for unit
through systemctl. Such as
systemctl set-property sshd.service BlockIODeviceWeight="/dev/sda 100"
This patch allows user to set up BlockIOReadBandwidth and BlockIOWriteBandwidth
for unit through systemctl. Such as
systemctl set-property sshd.service BlockIOReadBandwidth="/dev/sda 100000"
systemctl set-property sshd.service BlockIOWriteBandwidth="/dev/sda 200000"
"systemctl load" has always been racy since the GC could hit any time,
before making use of the loaded unit. Very recent systemd will run GC
immeidately after all unit state changes which has the effect that the
the effect of "systemctl load" is completely gone now, so let's remove
the support for it in "systemctl" for good.
"systemctl set-log-level" is a command for analysis and tracing hence
"systemd-analyze" should be the better home for it, thus allowing us to
make the overly large "systemctl" a bit smaller.
It's an analysis command and its format is explicitly not covered by any
stability guarantees, hence move away from systemctl and into
systemd-analyze, minimizing the already large interface of systemctl a
bit.
This patch also adds auto-paging to the various systemd-analyze commands
where that makes sense
$ systemctl --user status hoohoo
hoohoo.service
Loaded: loaded (/home/zbyszek/.config/systemd/user/hoohoo.service; static)
Active: inactive (dead)
start condition failed at Tue 2013-06-25 18:08:42 EDT; 1s ago
ConditionPathExists=/tmp/hoo was not met
Full information is exported over D-Bus:
[(condition, trigger, negate, param, state),...]
where state is one of "failed" (<0), "untested" (0), "OK" (>0).
I've decided to use 0 for "untested", because it might be useful to
differentiate different types of failure later on, without breaking
compatibility.
systemctl shows the failing condition, if there was a non-trigger
failing condition, or says "none of the trigger conditions were met",
because there're often many trigger conditions, and they must all
fail for the condition to fail, so printing them all would consume
a lot of space, and bring unnecessary attention to something that is
quite low-level.
"not-found" is a recently added load state and was previously just a
special case of "error". Since it also indicates a load error we should
also highlight it red, the same way as "error" was treated before.
When we issue a reexecution request via the private socket we need to
expect a "Disconnected" in addition to "NoReply" when the connection is
terminated.
The affected files in this patch had inconsistent use of tabs vs. spaces
for indentation, and this patch eliminates the stray tabs.
Also, the opening brace of sigchld_hdl() in activate.c was moved so the
opening braces are consistent throughout the file.
In order to prepare things for the single-writer cgroup scheme, let's
make logind use systemd's own primitives for cgroup management.
Every login user now gets his own private slice unit, in which his sessions
live in a scope unit each. Also, add user@$UID.service to the same
slice, and implicitly start it on first login.
This introduces two bus calls to make runtime changes to selected bus
properties, optionally with persistence.
This currently hooks this up only for three cgroup atributes, but this
brings the infrastructure to add more changable attributes.
This allows setting multiple attributes at once, and takes an array
rather than a dictionary of properties, in order to implement simple
resetting of lists using the same approach as when they are sourced from
unit files. This means, that list properties are appended to by this
call, unless they are first reset via assigning the empty list.
Replace the very generic cgroup hookup with a much simpler one. With
this change only the high-level cgroup settings remain, the ability to
set arbitrary cgroup attributes is removed, so is support for adding
units to arbitrary cgroup controllers or setting arbitrary paths for
them (especially paths that are different for the various controllers).
This also introduces a new -.slice root slice, that is the parent of
system.slice and friends. This enables easy admin configuration of
root-level cgrouo properties.
This replaces DeviceDeny= by DevicePolicy=, and implicitly adds in
/dev/null, /dev/zero and friends if DeviceAllow= is used (unless this is
turned off by DevicePolicy=).
In order to prepare for the kernel cgroup rework, let's introduce a new
unit type to systemd, the "slice". Slices can be arranged in a tree and
are useful to partition resources freely and hierarchally by the user.
Each service unit can now be assigned to one of these slices, and later
on login users and machines may too.
Slices translate pretty directly to the cgroup hierarchy, and the
various objects can be assigned to any of the slices in the tree.
In 131601349 'systemctl: align all status fields to common column',
padding was calculated for 'ListenStream: ...', etc. Later on in
45a4f7233 'systemctl: tweak output of Listen: fields a bit' output
was changed to 'Listen: ... (stream)', but calculation didn't change.
Just remove the calculation, since now the result will be always 8,
and it it more important to have everything aligned to the widest
field ("Main-PID"), than to save a few columns, usually at most two
(e.g. "Listen").
Note: strlen is more natural, and is optimized to sizeof even
with -O0.
Unit names were mangled in function enable_unit only when dbus was
used. This patch adds mangling also when the dbus is not in use.
This makes it possible to say e.g.:
systemctl --root=/path enable cups
without spelling cups.service out in full.
I'm assuming that it's fine if a _const_ or _pure_ function
calls assert. It is assumed that the assert won't trigger,
and even if it does, it can only trigger on the first call
with a given set of parameters, and we don't care if the
compiler moves the order of calls.
DECIMAL_STR_WIDTH() now works on any numeric type, and is easier to
distingish from DECIMAL_STR_MAX().
This also replaces another manual implementaiton of ulog10 by this macro.
Make sure we compare errno against positive error codes.
The ones in hwclock.c and install.c can have an impact, the
rest are unlikely to be hit or in code that isn't widely
used.
Also check that errno > 0, to help gcc know that we are
returning a negative error code.
This mirrors --property, and is generally useful.
New functionality is used in bash completion.
In case of zsh completion, new functionality is less useful
because of caching. Nevertheless, zsh completion for restart
is made to behave more-or-less the same as bash completion.
At least sockets can be restarted.
I was debugging systemd waiting on a missing disk, and noticed
that the job listing could use some polishing. Jobs that are
actually running are highlighted, so it's easier to see what
very actually waiting for.
Also, the needed widths are precalculated, to use available columns
more ecomically.
Before, we would initialize many fields twice: first
by filling the structure with zeros, and then a second
time with the real values. We can let the compiler do
the job for us, avoiding one copy.
A downside of this patch is that text gets slightly
bigger. This is because all zero() calls are effectively
inlined:
$ size build/.libs/systemd
text data bss dec hex filename
before 897737 107300 2560 1007597 f5fed build/.libs/systemd
after 897873 107300 2560 1007733 f6075 build/.libs/systemd
… actually less than 1‰.
A few asserts that the parameter is not null had to be removed. I
don't think this changes much, because first, it is quite unlikely
for the assert to fail, and second, an immediate SEGV is almost as
good as an assert.
So far we didn't place spaces between the box drawing chars and the
values next to them. Let's be consistent here.
(Or to turn this around: if we really want to place a space there we
probably should do that in all our tree outputs, not just here...)
It's probably a good idea to minimize the number of field names to show
in the "systemctl status" output, in order to make them useful as a
guide for the reader how things are "grouped". This patch moves
information about the used socket technology to the end of the output
lines in brackets, rather than into the field names. This turns the used
socket technology into what it is -- peripheral meta information --
instead of something that was at the core.
New output:
systemd-journald.socket - Journal Socket
Loaded: loaded (/usr/lib/systemd/system/systemd-journald.socket; static)
Active: active (running) since Fr 2013-03-29 02:16:30 CET; 1 weeks 0 days ago
Docs: man:systemd-journald.service(8)
man:journald.conf(5)
man:systemd-journald.service(8)
man:journald.conf(5)
Listen: /run/systemd/journal/stdout (Stream)
/run/systemd/journal/socket (Datagram)
/dev/log (Datagram)
Instead of outputting "5h 55s 50ms 3us" we'll now output "5h
55.050003s". Also, while outputting the accuracy is configurable.
Basically we now try use "dot notation" for all time values > 1min. For
>= 1s we use 's' as unit, otherwise for >= 1ms we use 'ms' as unit, and
finally 'us'.
This should give reasonably values in most cases.
code in src/shared/macro.h only defined MAX/MIN in case
they were not defined previously. however the MAX/MIN
macros implemented in glibc are not of the "safe" kind but defined
as:
define MIN(a,b) (((a)<(b))?(a):(b))
define MAX(a,b) (((a)>(b))?(a):(b))
Avoid nasty side effects by using our own versions instead.
Also fix the warnings derived from this change.
[zj: - modify MAX3 macro to fix warning about _a shadowing _a,
- do bootchart/svg.c too,
- remove unused MIN3.]
gcc thinks that errno might be negative, and functions could return
something positive on error (-errno). Should not matter in practice,
but makes an -O4 build much quieter.
Distributions that never shipped upstart do not have
"telinit" in /lib/upstart/..
Defaults to /lib/upstart/telinit so there is no change
for systems existing installs.
After that functions which add matches, show_journal_by_unit
and show_journal_by_user_unit, become nearly identical, so
I merged them into one function.
This introduces a new static list of known attributes and their special
semantics. This means that cgroup attribute values can now be
automatically translated from user to kernel notation for command line
set settings, too.
This also adds proper support for multi-line attributes.
Occasionally people report problem with reboot/poweroff operations hanging in
the middle. One known cause is when a new transaction to start a unit is
enqueued while the shutdown is going on. The start of the unit conflicts with
the shutdown jobs, so they get cancelled. The failure case can be quite unpleasant,
becase getty and sshd may already be stopped.
Fix it by using irreversible jobs for shutdown (reboot/poweroff/...) actions.
This applies to commands like "reboot", "telinit 6", "systemctl reboot". Should
someone desire to use reversible jobs, they can say "systemctl start reboot.target".`
Add a new job mode: replace-irreversibly. Jobs enqueued using this mode
cannot be implicitly canceled by later enqueued conflicting jobs.
They can however still be canceled with an explicit "systemctl cancel"
call.
"systemctl default" should behave identically to "telinit N" (where N is the
corresponding runlevel target number), therefore it should use isolate job mode
too.
This makes 'status' behave like 'list-units':
systemctl status -> status of all units
systemctl -t error status -> status of error units
systemctl -t mount status -> etc.
systemctl list-dependencies lists all unit's dependecies and
recursively expands all subsidiary target units into a tree.
Primary purpose for this command is to show all units which are
enabled in specified target.
New file output.h with output flags and modes.
--full parameter also for cgls and loginctl.
Include 'all' parameter in flags (show_cgroup_by_path, show_cgroup,
show_cgroup_and_extra, show_cgroup_and_extra_by_spec).
get_process_cmdline with max_length == 0 will not ellipsize output.
Replace LINE_MAX with 0 in some calls of get_process_cmdline.
[zj: Default to --full when under pager for clgs.
Drop '-f' since it wasn't documented and didn't actually work.
Reindent a bit.
]
For "systemctl snapshot" it makes no sense to complete an incomplete
name with ".service" as we previously did, use ".snapshot" instead.
Also, don't bother with mount units or suchlike, we know that this must
be a snapshot and hence is the only sane way for completion.
For all other object mehtods there are already counterparts on the
manager object, as they help us reduce round-trips. So let's complete
this, and reduce complexity on the client side a bit.
As a side effect this also makes "systemctl snapshot" without arguments
work again.
Adds is-failed to join is-active and is-enabled.
I grabbed this one from the todo list. Most of the functionality was
already there for is-active. I just needed to make check_one_unit take
the states to check for as an argument instead of the hardcoded
"active" and "reloading".
is-failed will return 1 if none of the units given are failed. This is
different from is-active which will return 3 if none of the units
given are active. It returns 3 with this comment:
/* According to LSB: "program is not running" */
As that does not make sense when looking for failed units I simply
chose 1 instead.
If the path to init is not specified as an argumnt to systemctl, but
init= is given on the kernel commandline, use that.
This means the initrd does not need glue code to parse the kernel
commandline before passing on init= to systemctl.
Cc: Harald Hoyer <harald@redhat.com>
Cc: Dave Reisner <dreisner@archlinux.org>
People still don't understand what the message implies.
We have to be more verbose (or more intelligent and detect some of the
cases automatically, but that's not so easy).
https://bugzilla.redhat.com/show_bug.cgi?id=884438
If 'systemctl enable' (and friends) is run inside chroot it always
exits with a bad return code. unit_file_enable() returns the number of
symlink rules that were supposed to be created. So resetting r to 0 and
exiting gracefully should be the correct way.
Given that "journalctl -u" exists now there's no need to duplicate this
functionality in systemctl, so let's drop this, especially given that it
always felt a bit awkward to overload "-f" to both --force and --follow,
and to have continues output with a status header for this.
systemctl status -f avahi-daemon
now becomes:
journalctl -fu avahi-daemon
Which is shorter and a lot less redundant.
a) Instead of parsing the bus messages inside of selinux-access.c
simply pass everything pre-parsed in the functions
b) implement the access checking with a macro that resolves to nothing
on non-selinux builds
c) split out the selinux checks into their own sources
selinux-util.[ch]
d) this unifies the job creation code behind the D-Bus calls
Manager.StartUnit() and Unit.Start().
Among other cleanups this introduces a threshold for the size of binary
blobs we serialize as integer arrays in the JSON output. THis can be
disabled via --all.
Systemctl would always return 1, because it treated uninteresting dbus
messages ("job added") as errors. Just ignore everything apart from
interesting ("job removed") messages.
Semantics are slightly different, because before unit_name_mangle
returning NULL was ignored, and now it is reported as oom. But
unit_name_mangle only returns NULL on oom.
Note: I did s/MANAGER/SYSTEMD/ everywhere, even though it makes the
patch quite verbose. Nevertheless, keeping MANAGER prefix in some
places, and SYSTEMD prefix in others would just lead to confusion down
the road. Better to rip off the band-aid now.
This splits the JSON output mode into different modes: json and
json-pretty. The former printing one entry per line, the latter showing
JSON objects nicely indented and in multiple lines to make it easier to
read for humans.
In some cases, like wrong configuration, restarting after error
does not help, so administrator can specify statuses by RestartPreventExitStatus
which will not cause restart of a service.
Sometimes you have non-standart exit status, so this can be specified
by SuccessfulExitStatus.
this method combines the folowing dbus calls and there error handling:
dbus_message_new_method_call()
dbus_message_append_args()
dbus_connection_send_with_reply_and_block()
