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hooks/pre-auto-gc: look in sysfs to see if a battery is known.

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Barring any kernel bugs, if this directory exists and there is
a symlink in there (which will point to the battery object),
that means there is a battery known to the kernel.

No symlink should mean no battery as far as the kernel is concerned.

Change-Id: Ib12819a5bbb816f0ae5ca080e5812a2db08441e9
This commit is contained in:
Brian Harring 2012-05-25 02:21:06 -07:00
parent eca119e5d6
commit 6a927c5d19
1 changed files with 5 additions and 0 deletions
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5
hooks/pre-auto-gc
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@ -38,6 +38,11 @@ elif test -x /usr/bin/pmset && /usr/bin/pmset -g batt |
grep -q "Currently drawing from 'AC Power'"
then
exit 0
elif test -d /sys/bus/acpi/drivers/battery && test 0 = \
"$(find /sys/bus/acpi/drivers/battery/ -type l | wc -l)";
then
# No battery exists.
exit 0
fi
echo "Auto packing deferred; not on AC"