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and related calls
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The macros in shared/macro.h have been updated to no longer use fixed
variable names. This will silence any shadowing-warnings, so drop the
DISABLE_WARNING_* annotations.
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We require a NULL entry as sentinal in bus_properties_map. Fix this!
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This introduces a new SYSVIEW_EVENT_SETTLE notification that is sent after
initial scanning via sysview is done. This is very handy to let the
application raise warnings in case requested resources are not found
during startup.
The SETTLE event is sent after systemd-logind and udev enumerations are
done. This event does in no way guarantee that a given resource is
available. All it does is notify the application that scanning is done!
You must not react to SETTLE if you don't have external synchronization
with the resource you're waiting for.
The main use-case for SETTLE is to run applications _inside_ of logind
sessions and startup sysview. You really want to make sure that the own
session you're running in was found during enumeration. If not, something
is seriously wrong.
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XKB errors aren't *that* important.
Coverity complained that the same action is taken in multiple
branches, which is semi-valid, so is fixed too (CID #1256582).
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This patch removes includes that are not used. The removals were found with
include-what-you-use which checks if any of the symbols from a header is
in use.
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After all it is now much more like strjoin() than strappend(). At the
same time, add support for NULL sentinels, even if they are normally not
necessary.
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If we scale our buffer to be wide enough for the format string, we
should expect that the calculation was correct.
char_array_0() invocations are removed, since snprintf nul-terminates
the output in any case.
A similar wrapper is used for strftime calls, but only in timedatectl.c.
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We should prefer the unifont.hex file from the system, instead of our
own. Upstream has made a few releases since our version was included,
and we should follow upstream changes. But adding 2.6MB to our source
repo every time upstream releases is not nice.
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This partially reverts:
commit f131770b1465fbf423881f16ba85523a05f846fe
Author: Veres Lajos <vlajos@gmail.com>
Date: Mon Dec 29 09:45:58 2014 +0000
tree-wide: spelling fixes
The commit in question changed a binary file. I didn't look at the diff in
particular, so I have no idea what exactly was changed. However, the file
is generated and it looked highly suspiciuous. Therefore, I reverted that
part.
Note that this is generated by "make update-unifont" so really no reason
to touch at all.
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https://github.com/vlajos/misspell_fixer
https://github.com/torstehu/systemd/commit/b6fdeb618cf2f3ce1645b3315f15f482710c7ffa
Thanks to Torstein Husebo <torstein@huseboe.net>.
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Originally we only supported ucs2, so move the ucs4 version from libsystemd-terminal to shared
and use that everywhere.
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loop_write() didn't follow the usual systemd rules and returned status
partially in errno and required extensive checks from callers. Some of
the callers dealt with this properly, but many did not, treating
partial writes as successful. Simplify things by conforming to usual rules.
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We must not call screen_map() multiple times for the same input char. Fix
the double-mapping for GL/GR maps are correctly applied.
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Using the same scripts as in f647962d64e "treewide: yet more log_*_errno
+ return simplifications".
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If the format string contains %m, clearly errno must have a meaningful
value, so we might as well use log_*_errno to have ERRNO= logged.
Using:
find . -name '*.[ch]' | xargs sed -r -i -e \
's/log_(debug|info|notice|warning|error|emergency)\((".*%m.*")/log_\1_errno(errno, \2/'
Plus some whitespace, linewrap, and indent adjustments.
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Basically:
find . -name '*.[ch]' | while read f; do perl -i.mmm -e \
'local $/;
local $_=<>;
s/log_(debug|info|notice|warning|error|emergency)\("([^"]*)%s"([^;]*),\s*strerror\(-?([->a-zA-Z_]+)\)\);/log_\1_errno(\4, "\2%m"\3);/gms;print;' \
$f; done
Plus manual indentation fixups.
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It corrrectly handles both positive and negative errno values.
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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().
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Broke with 086891e5c119abb9854237fc32e736fe2d67234c
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- 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.
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Properly forward all XKB messages. You can use XKB_LOG_VERBOSITY= to
control the amount of messages sent by XKB. We explicitly set
XKB_LOG_LEVEL to 7 you can use SYSTEMD_LOG_LEVEL to control the log-level
generically.
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Use XKB_CONTEXT_NO_FLAGS instead of magic 0.
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Before forwarding keyboard events, feed them into possible compose tables.
This enables Compose-key and Dead-key features.
Few notes:
* REPEAT events are never fed into compose tables. It just doesn't make
sense and is usually not wanted. Compose-sequences are usually hard to
remember and take time to type. Thus, the REPEAT event of the
Compose-key itself would often cancel the compose sequence already.
* Stop resolving symbols for UP events. Anything but keycodes is never
associated to a physical key, but is a one-time action. There is
nothing like UP events for key-symbols!
* Cancel compose-sequences on Multi-Key UP. See the inline comment. We
should make this configurable!
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Add support for compose files to idev-keyboard. This requires
libxkbcommon-0.5.0, which is pretty new, but should be fine.
We don't use the compose-files, yet. Further commits will put life into
them.
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Imagine a constructor like this:
int object_new(void **out) {
void *my_object;
int r;
...
r = ioctl(...);
if (r < 0)
return -errno;
...
*out = my_object;
return 0;
}
We have a lot of those in systemd. If you now call those, gcc might inline
the call and optimize it. However, gcc cannot know that "errno" is
negative if "r" is. Therefore, a caller like this will produce warnings:
r = object_new(&obj);
if (r < 0)
return r;
obj->xyz = "foobar";
In case the ioctl in the constructor fails, gcc might assume "errno" is 0
and thus the error-handling is not triggered. Therefore, "obj" is
uninitialized, but accessed. Gcc will warn about that.
The new negative_errno() helper can be used to mitigate those warnings.
The helper is guaranteed to return a negative integer. Furthermore, it
spills out runtime warnings if "errno" is non-negative.
Instead of returning "-errno", you can use:
return negative_errno();
gcc will no longer assume that this can return >=0, thus, it will not warn
about it.
Use this new helper in libsystemd-terminal to fix some grdev-drm warnings.
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Usually, when our session is activated (or re-configurated) we should be
able to try a page-flip to our buffer. The kernel driver should reject it
if it is incompatible. As it turns out, drivers don't do this. Therefore,
we now force a deep modeset if we're not sure what mode is set.
This has the side-effect that we might get glitches on session-switches
(depending on driver behavior). However, there's no way around this and it
is what everyone does so far. Most drivers still detect if we keep the
mode and so don't touch the clocks. Therefore, we just get a regular async
flip.
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XKB consumed mods include modifiers that *didn't* affect the translation,
but might affect it if used. This is very misleading, given that we are
usually not interested in that information. Therefore, keep them in real
mods to behave like X11 does. Maybe at some point, XKB introduces proper
shortcut matching...
Also make evcat display consumed modifiers so we can better debug those
situations.
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Bold glyphs always use light colors. However, this color conversion is
limited to the foreground color, so skip it for backgrounds.
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We rely on the parent terminal to do color conversion, so also leave
bold->light conversion to the parent. Otherwise, it will be performed
twice and we might apply it on the wrong color.
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Hook up SM/RM 47/1047-1049 and enable alternate screen buffers for term
applications.
(David: rebased on top of -git, renamed helpers and added docs)
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Terminal state can be saved/restored by applications. To simplify our
internal handling, put all affected state into a separate object.
Especially with alternate screen buffers, this will simplify our code
significantly.
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We draw our own cursor in subterm now, so there's no reason to update the
cursor-position of the parent terminal on each frame. The parent's cursor
is hidden, anyway.
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7BIT mode is enabled by default. Fix the comment to state this correctly.
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Instead of increasing the screen-age on redraw, we now increase it only on
real updates. This is effectively the same, but avoids increased age
counters on backbuffer rendering. Therefore, we can now check age counters
against fronbuffers safely, while rendering frames in background.
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Terminals use pseudo color-codes mixed with 8bit and 24bit colors. Provide
a color-converter so external renderers only have to deal with ARGB32
colors.
This requires a color-palette as input as there's no fixed mapping. We
provide a default, but maybe we wanna support external palettes in the
future.
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This is the most simple way to render cursors: flip attr->inverse of the
cursor cell. This causes the background and foreground colors of the
cursor-cell to be inversed.
Now that we render cursors ourselves, make subterm not call into the
parent terminal to render cursors.
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If we hide or show the cursor, we change visual attributes and have to
mark the underlying cell as dirty. Otherwise, the terminal will not be
redrawn.
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Matching keyboard shortcuts on internationalized keyboards is actually
non-trivial. Matching the actual key is easy, but the modifiers can be
used by both, the matching and the translation step. Therefore, XKB
exports "consumed-modifiers" that we use to figure out whether a modifier
was already used by the translation step.
The new IDEV_KBDMATCH() helper can be used to match on any keyboard
shortcut and it will do the right thing.
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Implement the feed_keyboard() handling by mapping XKB keys according to
DEC-VT behavior.
Public information on terminal key-mappings is pretty scarce. We only
implement the most basic mapping for now. Further improvements welcome!
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