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Auto-detect root partition

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This commit is contained in:
Stefan Mavrodiev 2018-05-09 16:39:08 +03:00
parent 2bb360c490
commit c3e8255546
1 changed files with 15 additions and 3 deletions
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18
SOFTWARE/A64-TERES/teres1-lcd-hdmi-switch/change-display
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@ -5,12 +5,26 @@ if [[ $EUID -ne 0 ]]; then
exit 1 exit 1
fi fi
# Find root device
for cmd in $(cat /proc/cmdline); do
[[ $(cut -d'=' -f1 <<< $cmd) == "root" ]] && \
root_device=$(cut -d'=' -f2 <<< $cmd) && \
boot_device="${root_device%?}1" && break
done
[[ -z $boot_device ]] && echo "Unknown boot device. Exiting..." >&2 && exit 1
# Make sure correct boot partition is mounted
df | grep -q $boot_device && umount /boot
mount $boot_device /boot
choices=$(dialog \ choices=$(dialog \
--title "Configure display output" \ --title "Configure display output" \
--menu "\nChoose an option: \n" 10 60 7 \ --menu "\nChoose an option: \n" 10 60 7 \
1 "Enable HDMI display output" \ 1 "Enable HDMI display output" \
2 "Enable LCD display output" 2>&1 >/dev/tty) 2 "Enable LCD display output" \
2>&1 >/dev/tty)
[[ -z $choices ]] && exit 0
for choice in $choices for choice in $choices
do do
case $choice in case $choice in
@ -28,8 +42,6 @@ do
esac esac
done done
# Display reboot confirmation # Display reboot confirmation
dialog \ dialog \
--title "Almost done" \ --title "Almost done" \