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improve IN_SET macro
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Making the array static allows gcc -O2 to generate smaller code:
"size systemd" before:
text data bss dec hex filename
1377286 128608 2632 1508526 1704ae systemd
After:
text data bss dec hex filename
1374326 128572 2664 1505562 16f91a systemd
(IN_SET still results in worse generated code than using
"x == FOO || x == BAR || ...". I don't think we'll be able to match
that with the C preprocessor.)
This change limits the use of IN_SET to sets with constant elements. All
present callers use constants. The compiler would report an "initializer
element is not constant" error otherwise.
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Putting the set elements in an array variable and using ELEMENTSOF makes
it clearer what's going on.
Incidentally, it also makes gcc -O2 generate slightly smaller code:
"size systemd", before:
text data bss dec hex filename
1378318 128608 2632 1509558 1708b6 systemd
After:
text data bss dec hex filename
1377286 128608 2632 1508526 1704ae systemd
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network: Add tunnel params
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Job logging fixes and improvements
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An endianness conversion was lost in 6024a6e302bad6bcf073fa84a41a6123305dc845.
Restore it. Now ata_id and scsi_id output match.
https://bugzilla.redhat.com/show_bug.cgi?id=1227503
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This way it does not need distinct string literals and it also preserves
the "rd." prefix.
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Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1245293
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We do not print all non-OK job completion status messages to the console
in red, because not all of them are plain errors. We do however log the
same messages as LOG_ERR.
Differentiate the log levels by deducing them from the job result in a
way that more or less matches the color of the console message.
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Joins three log_struct() calls into one.
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JOB_RESTART and failed JOB_VERIFY_ACTIVE completions were printed to
console but not to the log.
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It is misleading to see "Started foo." in the log when the unit's
condition was false.
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These units' message format strings are identical to the generic
strings. Since we can always rely on the fallback, these are now
redundant.
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This is similar to "core: always try harder to get unit status
message format string", but for job completion status messages.
It makes generic status messages applicable for printing to the console.
And it rewrites the functions in a more table-based style.
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unit_get_status_message_format() is used only with one of JOB_START,
JOB_STOP, JOB_RELOAD, all of which have fallback message strings
defined, so the function may never return NULL.
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Fix the overrun case in sample acquistion and negative number calculations.
Reported by Stefan Sauer.
Fixes #642
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WRITE_STRING_FILE_ATOMIC is only valid if WRITE_STRING_FILE_CREATE is also
given. IOW, an atomic file write operation is only possible when creating a
file is also being asked for.
This is a regression from the recent write_string_file() rework.
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WRITE_STRING_FILE_ATOMIC is only valid if WRITE_STRING_FILE_CREATE is also
given. IOW, an atomic file write operation is only possible when creating a
file is also being asked for.
This is a regression from the recent write_string_file() rework.
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The starting/stopping messages are printed to the console only if the
corresponding format string is defined in the unit's vtable. To avoid
excessive messages on the console, the unit types whose start/stop
jobs are instantaneous had the format strings intentionally undefined.
When logging the same event to the journal, a fallback to generic
Starting/Stopping/Reloading messages is used.
The problem of excessive console messages with instantaneous jobs
is already resolved in a nicer way ("core: fix confusing logging of
instantaneous jobs"), so there's no longer a need to have two ways of
getting the format strings. Let's fold them into one function with
the fallback to generic message strings.
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Return 1 from *_reload() methods to signify "we did something", just
like in *_start(). This causes "Reloading foo..." messages to be logged.
"Reloaded foo." messages are already logged.
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For instantaneous jobs (e.g. starting of targets, sockets, slices, or
Type=simple services) the log shows the job completion
before starting:
systemd[1]: Created slice -.slice.
systemd[1]: Starting -.slice.
systemd[1]: Created slice System Slice.
systemd[1]: Starting System Slice.
systemd[1]: Listening on Journal Audit Socket.
systemd[1]: Starting Journal Audit Socket.
systemd[1]: Reached target Timers.
systemd[1]: Starting Timers.
...
The reason is that the job completes before the ->start() method returns
and only then does unit_start() print the "Starting ..." message.
The same thing happens when stopping units.
Rather than fixing the order of the messages, let's just not emit the
Starting/Stopping message at all when the job completes instantaneously.
The job completion message is sufficient in this case.
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Add Pv6 Flow Label support. The 20-bit Flow Label field in the IPv6
header[RFC2460] is used by a node to label packets of a flow.
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sd-netlink: add tunnel parameters
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sd-bus: use isempty() consistently
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networkd: allow hostname override
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Instead of open-coding, use isempty() to check NULL or empty string
for consistency.
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The bug found by David existed in several places, fix them all. Also
extend the tests to cover these cases.
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Bitmap fixes
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networkd: move config parsers to specific header files
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We really must use 64bit integers to calculate long-long shifts.
Otherwise, we will never get higher masks than 2^31.
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Make sure we properly treat NULL bitmaps as empty. Right now, we don't
(which really looks like a typo).
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If a session is in closing state (and already got rid of its VT), then
never re-select it for that VT. There is no reason why we should grant
something to a session that is already going away *AND* already got rid
of exactly that.
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Our seat->positions[] array keeps track of the 'preferred' session on a
VT. The only situation this is used, is to select the session to activate
when a VT is activated. In the normal case, there's only one session per
VT so the selection is trivial.
Older greeters, however, implement take-overs when they start sessions on
the same VT that the greeter ran on. We recently limited such take-overs
to VTs where a greeter is running on, to force people to never share VTs
in new code that is written.
For legacy reasons, we need to be compatible to old greeters, though.
Hence, we allow those greeters to implement take-over. In such take-overs,
however, we should really make sure that the new sessions gets preferred
over the old one under all circumstances. Hence, make sure we override
the previous preferred session with a new session.
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move config_parse_tunnel_address from networkd.h to
tunnel specific file networkd-netdev-tunnel.h
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move config_parse_vxlan_group_address from
networkd.h to networkd-netdev-vxlan.h
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This adds test-bus-proxy which should be used to test correct behavior of
systemd-bus-proxyd. The first test that was added is to verify we actually
receive NameAcquired signals for ourselves on bus-connect.
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bitmap: use external iterator
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If the caller does not specify arg1 for NameOwnerChanged matches, we
really must take the ID from arg2 or arg3, if provided. They are
guaranteed to be identical to arg1 if either is supplied, but there is no
strict requiredment that arg1 is supplied. Hence, make sure to always
take the more restrictive match. Otherwise, we install rather wide
matches without anyone requiring them.
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Make sure we don't install NameOwnerChanged matches if the caller passed
a destination='' match (except if it is the broadcast address). Per spec,
all NameOwnerChanged signals are broadcasts.
Only the NameLost/NameAcquired signals are unicasts, but those are never
received through sd-bus. Instead, the bus-proxy synthesizes them and it
already installs proper matches for them.
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Make sure we actually parse "unsigned long long" if we encode a uint64_t.
Otherwise, we will get random data from the stack.
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Reuse the Iterator object from hashmap.h and expose a similar API.
This allows us to do
{
Iterator i;
unsigned n;
BITMAP_FOREACH(n, b, i) {
Iterator j;
unsigned m;
BITMAP_FOREACH(m, b, j) {
...
}
}
}
without getting confused. Requested by David.
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In gvariant, all fixed-size objects need to be sized a multiple of their
alignment. If a structure has only fixed-size members, it is required to
be fixed size itself. If you imagine a structure like (ty), you have an
8-byte member followed by an 1-byte member. Hence, the overall inner-size
is 9. The alignment of the object is 8, though. Therefore, the specs
mandates final padding after fixed-size structures, to make sure it's
sized a multiple of its alignment (=> 16).
On the gvariant decoder side, we already account for this in
bus_gvariant_get_size(), as we apply overall padding to the size of the
structure. Therefore, our decoder correctly skips such final padding when
parsing fixed-size structure.
On the gvariant encoder side, however, we don't account for this final
padding. This patch fixes the structure and dict-entry encoders to
properly place such padding at the end of non-uniform fixed-size
structures.
The problem can be easily seen by running:
$ busctl --user monitor
and
$ busctl call --user org.freedesktop.systemd1 / org.foobar foobar "(ty)" 777 8
The monitor will fail to parse the message and print an error. With this
patch applied, everything works fine again.
This patch also adds a bunch of test-cases to force non-uniform
structures with non-pre-aligned positions.
Thanks to Jan Alexander Steffens <jan.steffens@gmail.com> for spotting
this and narrowing it down to non-uniform gvariant structures. Fixes #597.
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resolved: add basic NSEC and NSEC3 support
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So right now our object-tree is limited to 2 levels at most
('/' and '/foo/...../bar'). We never link any intermediate levels, even
though that was clearly the plan. Fix the bus_node_allocate() helper to
actually link all intermediate nodes, too, not just the root node.
This fixes a simple inverse ptr-diff bug.
The downside of this fix is that we clearly never tested (nor used) the
object tree in any way. The only reason that the introspection works is
that our enumerators shortcut the object tree.
Lets see whether that code actually works..
Thanks to: Nathaniel McCallum <nathaniel@themccallums.org>
..for reporting this. See #524 for an actual example code.
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It is highly confusing if a getter function returns 0, but the value is
set to NULL. This, right now, triggers assertions as code relies on the
returned values to be non-NULL.
Like with sd-bus-creds and friends, return 0 only if a value is actually
available.
Discussed with Tom, and actually fixes real bugs as in #512.
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