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atof(3), whose return value is undefined on error, is used to parse
command line arguments, leading to undefined beavior if something else
than a number is specified.
this patch uses strtod(3) and exits on error.
Signed-off-by: Roberto Ricci <rroberto2r@gmail.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
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Previously, it was always rounded down, which meant that -dec X would
result in a bigger change than -inc X for the same X if rounding took place.
Signed-off-by: Roman Donchenko <dpb@corrigendum.ru>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
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Do not trigger re-enumerating output devices when changing or querying
the backlight.
Re-enumerating output devices may stall Xorg at least on Intel GPUs when
EDID is unresponsive or contains bogus data (due to retries). When
working with the backlight it is safe to assume that a monitor capable
of setting its backlight is currently connected.
Signed-off-by: Nils Schneider <nils@nilsschneider.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Modern displays allow for fine grained brightness settings. For example,
my laptop allows for 852 brightness steps. In some situations I find it
useful to set the brightness below 1 percent (the minimum possible when
using integers).
This patch makes xbacklight use a double instead so lower brightness
values like 0.12 are possible.
Signed-off-by: Nils Schneider <nils@nilsschneider.net>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
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Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
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obviously incorrect output of "xbacklight -get":
51671552015166906368.000000
valgrind reports an invalid read of size 8 at xbacklight.c:91
https://bugs.freedesktop.org/show_bug.cgi?id=63205
Reviewed-by: Julien Cristau <jcristau@debian.org>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
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Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
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Signed-off-by: Matt Turner <mattst88@gmail.com>
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This also uses XORG_CHANGELOG and XORG_CWARNFLAGS, corrects
make distcheck and all gcc 4.3 and sparse warnings.
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