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script with universal mmcblkX call, and use of postboot hooks for dietPi (should still work with rc-local stuff)

This commit is contained in:
Clemens Arth 2020-09-18 14:58:21 +02:00
parent 2b6afa184e
commit d17cdade6d
1 changed files with 31 additions and 16 deletions
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33
pishrink.sh Executable file → Normal file
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@ -78,30 +78,42 @@ function set_autoexpand() {
return return
fi fi
if [[ -f "$mountdir/etc/rc.local" ]] && [[ "$(md5sum "$mountdir/etc/rc.local" | cut -d ' ' -f 1)" != "1c579c7d5b4292fd948399b6ece39009" ]]; then if ([[ -f "$mountdir/etc/rc.local" ]] && [[ "$(md5sum "$mountdir/etc/rc.local" | cut -d ' ' -f 1)" != "1c579c7d5b4292fd948399b6ece39009" ]]); then
echo "Creating new /etc/rc.local" echo "Creating new /etc/rc.local"
isok=1
rclocal=1
boothook=/etc/rc.local
if [ -f "$mountdir/etc/rc.local" ]; then if [ -f "$mountdir/etc/rc.local" ]; then
mv "$mountdir/etc/rc.local" "$mountdir/etc/rc.local.bak" mv "$mountdir/etc/rc.local" "$mountdir/etc/rc.local.bak"
fi fi
elif [[ -d "$mountdir/var/lib/dietpi/postboot.d" ]]; then
echo "Using postboot hooks..."
isok=1
rclocal=0
boothook=/var/lib/dietpi/postboot.d/inflatefs.sh
fi
if [ "$isok" -eq "1" ]; then
#####Do not touch the following lines##### #####Do not touch the following lines#####
cat <<\EOF1 > "$mountdir/etc/rc.local" cat <<\EOF1 > "$mountdir$boothook"
#!/bin/bash #!/bin/bash
do_expand_rootfs() { do_expand_rootfs() {
ROOT_PART=$(mount | sed -n 's|^/dev/\(.*\) on / .*|\1|p') ROOT_PART=$(mount | sed -n 's|^/dev/\(.*\) on / .*|\1|p')
DEV_PART=$(echo "$ROOT_PART" | cut -f1 -d"p")
PART_NUM=${ROOT_PART#mmcblk0p} PART_NUM=${ROOT_PART#"${DEV_PART}p"}
if [ "$PART_NUM" = "$ROOT_PART" ]; then if [ "$PART_NUM" = "$ROOT_PART" ]; then
echo "$ROOT_PART is not an SD card. Don't know how to expand" echo "$ROOT_PART is not an SD card. Don't know how to expand"
return 0 return 0
fi fi
# Get the starting offset of the root partition # Get the starting offset of the root partition
PART_START=$(parted /dev/mmcblk0 -ms unit s p | grep "^${PART_NUM}" | cut -f 2 -d: | sed 's/[^0-9]//g') PART_START=$(parted /dev/${DEV_PART} -ms unit s p | grep "^${PART_NUM}" | cut -f 2 -d: | sed 's/[^0-9]//g')
[ "$PART_START" ] || return 1 [ "$PART_START" ] || return 1
# Return value will likely be error for fdisk as it fails to reload the # Return value will likely be error for fdisk as it fails to reload the
# partition table because the root fs is mounted # partition table because the root fs is mounted
fdisk /dev/mmcblk0 <<EOF fdisk /dev/${DEV_PART} <<EOF
p p
d d
$PART_NUM $PART_NUM
@ -114,11 +126,11 @@ p
w w
EOF EOF
cat <<EOF > /etc/rc.local && cat <<EOF > $boothook &&
#!/bin/sh #!/bin/sh
echo "Expanding /dev/$ROOT_PART" echo "Expanding /dev/$ROOT_PART"
resize2fs /dev/$ROOT_PART resize2fs /dev/$ROOT_PART
rm -f /etc/rc.local; cp -f /etc/rc.local.bak /etc/rc.local; /etc/rc.local rm -f $boothook
EOF EOF
reboot reboot
@ -140,14 +152,16 @@ sleep 5
do_expand_rootfs do_expand_rootfs
echo "ERROR: Expanding failed..." echo "ERROR: Expanding failed..."
sleep 5 sleep 5
if [[ -f /etc/rc.local.bak ]]; then if [ "$rclocal" -eq "1" ]; then
if [[ -f /etc/rc.local.bak ]]; then
cp -f /etc/rc.local.bak /etc/rc.local cp -f /etc/rc.local.bak /etc/rc.local
/etc/rc.local /etc/rc.local
fi
fi fi
exit 0 exit 0
EOF1 EOF1
#####End no touch zone##### #####End no touch zone#####
chmod +x "$mountdir/etc/rc.local" chmod +x "$mountdir$boothook"
fi fi
umount "$mountdir" umount "$mountdir"
} }
@ -421,3 +435,4 @@ aftersize=$(ls -lh "$img" | cut -d ' ' -f 5)
logVariables $LINENO aftersize logVariables $LINENO aftersize
info "Shrunk $img from $beforesize to $aftersize" info "Shrunk $img from $beforesize to $aftersize"