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Commit Graph

24 Commits

Author SHA1 Message Date
Michal Schmidt
56f64d9576 treewide: use log_*_errno whenever %m is in the format string
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.
2014-11-28 19:49:27 +01:00
Michal Schmidt
c33b329709 treewide: more log_*_errno() conversions, multiline calls
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.
2014-11-28 17:17:51 +01:00
Michal Schmidt
da927ba997 treewide: no need to negate errno for log_*_errno()
It corrrectly handles both positive and negative errno values.
2014-11-28 13:29:21 +01:00
Michal Schmidt
0a1beeb642 treewide: auto-convert the simple cases to log_*_errno()
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().
2014-11-28 12:04:41 +01:00
Michael Biebl
b76388e123 backlight: Avoid error when state restore is disabled
When the state restore is disabled, we would print:
"Unknown verb: load" instead of simply skipping loading the
state.
2014-09-11 00:53:49 +02:00
Denis Tikhomirov
4cd2b2cf8c backlight: Do not clamp brightness for LEDs
https://bugs.freedesktop.org/show_bug.cgi?id=77092

On Thu, Jun 05, 2014 at 08:37:20AM +0200, Lennart Poettering wrote:
> The patch is line-broken, please send an uncorrupted patch!
I am very sorry, I forgot that my client limits line width. I will use
mutt now on.
> clamp_brightness() clamps the brightness value to the range of the
> actual device. This is a recent addition that was added to deal with
> driver updates where the resolution is changed. I don't think this part
> should be dropped for LED devices. The clamp_brightness() call hence
> should be called unconditionally, however, internally it should use a
> different min_brightness value if something is an !backlight devices...
Thank you for explanation, this sounds very reasonable to me. Please,
see updated patch:
2014-06-10 18:57:48 +02:00
Jani Nikula
0c9d8f1d4b backlight: handle saved brightness exceeding max brightness
If too high a brightness value has been saved (e.g. due to kernel
mechanism changing from one kernel version to another, or booting the
userspace on another system), the brightness update fails and the
process exits.

Clamp saved brightness between the policy minimum introduced in

commit 7b909d7407
Author: Josh Triplett <josh@joshtriplett.org>
Date:   Tue Mar 11 21:16:33 2014 -0700

    backlight: Avoid restoring brightness to an unreadably dim level

and the absolute maximum.

https://bugs.freedesktop.org/show_bug.cgi?id=78200
2014-05-07 20:04:56 -04:00
Lennart Poettering
c7fdf44d08 backlight: warn if kernel exposes backlight device with bogus max_brightness
We shouldn't silently tape over broken kernel drivers.
2014-04-23 19:06:38 +02:00
Zbigniew Jędrzejewski-Szmek
938d2699d2 backlight: unify error messages 2014-04-07 21:02:33 -04:00
Thomas Bächler
3cadce7d33 backlight: do nothing if max_brightness is 0
On virtually any newer Asus mainboard, the eeepc-wmi driver is loaded.
It exposes a backlight device despite the lack of any physical backlight
devices. This fake backlight device has max_brightness set to 0. Since
the introduction of the clamp_brightness function, systemd-backlight
tries to write '1' to brightness and fails.

This patch changes systemd-backlight to exit gracefully when
max_brightness is 0 before performing any action. This affects
both the load and save actions.
2014-04-04 15:14:12 +02:00
Josh Triplett
7b909d7407 backlight: Avoid restoring brightness to an unreadably dim level
Some systems turn the backlight all the way off at the lowest levels.
Clamp saved brightness to at least 1 or 5% of max_brightness.  This
avoids preserving an unreadably dim screen, which would otherwise force
the user to disable state restoration.
2014-03-12 16:43:51 +01:00
Josh Triplett
cddc35f75e backlight: Fix copy/paste error printing an unrelated error code
udev_device_get_sysattr_value returns NULL on failure, but doesn't
provide an error code; thus, when printing an error from it, don't print
an unrelated error code from a previous call.
2014-03-12 16:41:45 +01:00
Lennart Poettering
39883f622f make gcc shut up
If -flto is used then gcc will generate a lot more warnings than before,
among them a number of use-without-initialization warnings. Most of them
without are false positives, but let's make them go away, because it
doesn't really matter.
2014-02-19 17:53:50 +01:00
Jan Engelhardt
73e231abde doc: update punctuation
Resolve spotted issues related to missing or extraneous commas, dashes.
2014-02-17 19:03:07 -05:00
Karel Zak
4561be3a64 Remove duplicate includes 2013-11-18 20:28:55 -05:00
Lennart Poettering
74df0fca09 util: unify reading of /proc/cmdline
Instead of individually checking for containers in each user do this
once in a new call proc_cmdline() that read the file only if we are not
in a container.
2013-11-06 03:15:16 +01:00
Tom Gundersen
295edddf5a kerne-command-line: introduce option 'systemd.restore_state'
When set to 0 this will stop tools like the backlight and rfkill tools to
restore state from previous boot. This is useful in case the stored state
is bogus to the extent that it is preventing you from resetting it (e.g.,
the backlight settings cause the screen to be off on boot on a system where
the backlight can not be adjusted directly from the keyboard).
2013-10-19 00:46:10 +02:00
Lennart Poettering
be3f52f4ed backlight: include ID_PATH in file names for backlight settings
Much like for rfkill devices we should provide some stability regarding
enumeration order, hence include the stable bits of the device path in
the file name we store settings under.
2013-10-14 19:02:44 +02:00
Lennart Poettering
0f4ba83c39 backlight: always prefer "firmware"/"platform" backlights over "raw" backlights if we have both for the same device 2013-10-14 02:22:35 +02:00
Zbigniew Jędrzejewski-Szmek
1ca208fb4f Introduce udev object cleanup functions 2013-10-13 17:56:55 -04:00
Bastien Nocera
1a0464230c Add support for saving/restoring keyboard backlights
Piggy-backing on the display backlight code, this saves and restores
keyboard backlights on supported devices.

The detection code matches that of UPower:
http://cgit.freedesktop.org/upower/tree/src/up-kbd-backlight.c#n173

https://bugs.freedesktop.org/show_bug.cgi?id=70367

[tomegun: also work for devices named "{smc,samsung,asus}::kbd_backlight"]
2013-10-11 12:52:36 +02:00
Lennart Poettering
ef5bfcf668 backlight,random-seed: move state files into /var/lib/systemd
Let's not scatter (private) files in /var around, let's place them all
in /var/lib/systemd and below.
2013-09-17 17:28:35 -05:00
Lennart Poettering
875c6e1b48 backlight: instead of syspath use sysname for identifying backlight devices
This makes the description string of the backlight service a bit nicer.
2013-08-14 02:55:57 +02:00
Lennart Poettering
3731acf1ac backlight: add minimal tool to save/restore screen brightness across reboots
As many laptops don't save/restore screen brightness across reboots,
let's do this in systemd with a minimal tool, that restores the
brightness as early as possible, and saves it as late as possible. This
will cover consoles and graphical logins, but graphical desktops should
do their own per-user stuff probably.

This only touches firmware brightness controls for now.
2013-08-14 01:57:02 +02:00