mirror of
https://github.com/ventoy/Ventoy.git
synced 2024-12-26 23:25:57 -05:00
140 lines
2.7 KiB
Bash
140 lines
2.7 KiB
Bash
#!/bin/bash
|
|
|
|
print_usage() {
|
|
echo 'Usage: ExtendPersistentImg.sh file size'
|
|
echo ' file persistent dat file'
|
|
echo ' size extend size in MB'
|
|
echo 'Example:'
|
|
echo ' sh ExtendPersistentImg.sh ubuntu.dat 2048'
|
|
echo ''
|
|
}
|
|
|
|
if [ -z "$1" -o "$1" = "-h" ]; then
|
|
print_usage
|
|
exit 1
|
|
fi
|
|
|
|
if [ -z "$2" ]; then
|
|
print_usage
|
|
exit 1
|
|
fi
|
|
|
|
|
|
if [ "$1" = "__vbash__" ]; then
|
|
shift
|
|
else
|
|
if readlink /bin/sh | grep -q bash; then
|
|
:
|
|
else
|
|
exec /bin/bash $0 "__vbash__" "$@"
|
|
fi
|
|
fi
|
|
|
|
|
|
file=$1
|
|
size=$2
|
|
|
|
if [ ! -f "$file" ]; then
|
|
echo "$file not exist."
|
|
exit 1
|
|
fi
|
|
|
|
if echo $size | grep -q "^-"; then
|
|
mode="Shrink"
|
|
size=${size:1}
|
|
else
|
|
mode="Extend"
|
|
fi
|
|
|
|
if echo $size | grep -q "[^0-9]"; then
|
|
print_usage
|
|
exit 1
|
|
fi
|
|
|
|
fsize=$(stat -c '%s' $file)
|
|
|
|
fsmod=$(expr $fsize % 1024)
|
|
if [ $fsmod -ne 0 ]; then
|
|
echo "File size of $file is not aligned by 1MB, please check."
|
|
exit 1
|
|
fi
|
|
|
|
|
|
fsMB=$(expr $fsize / 1024 / 1024)
|
|
|
|
if [ "$mode" = "Extend" ]; then
|
|
total=$(expr $fsMB + $size)
|
|
else
|
|
if [ $fsMB -le $size ]; then
|
|
echo "File size of $file is less than ${size}MB."
|
|
exit 1
|
|
fi
|
|
total=$(expr $fsMB - $size)
|
|
fi
|
|
|
|
|
|
magic=$(hexdump -n3 -e '3/1 "%02X"' $file)
|
|
if [ "$magic" = "584653" ]; then
|
|
if [ "$mode" = "Shrink" ]; then
|
|
echo "Shrink is not supported for XFS filesystem."
|
|
exit 1
|
|
fi
|
|
|
|
if which xfs_growfs >/dev/null 2>&1; then
|
|
cmd=xfs_growfs
|
|
else
|
|
echo 'xfs_growfs not found, please install xfsprogs first'
|
|
exit 1
|
|
fi
|
|
else
|
|
if which resize2fs >/dev/null 2>&1; then
|
|
cmd=resize2fs
|
|
else
|
|
echo 'resize2fs not found, please install e2fsprogs first'
|
|
exit 1
|
|
fi
|
|
fi
|
|
|
|
if [ "$mode" = "Extend" ]; then
|
|
echo "$mode dat file... (current is ${fsMB}MB, append ${size}MB, total ${total}MB)"
|
|
dd if=/dev/zero bs=1M count=$size status=none >> "$file"
|
|
sync
|
|
else
|
|
echo "$mode dat file... (current is ${fsMB}MB, reduce ${size}MB, finally ${total}MB)"
|
|
fi
|
|
|
|
|
|
freeloop=$(losetup -f)
|
|
losetup $freeloop "$file"
|
|
|
|
if [ "$cmd" = "resize2fs" ]; then
|
|
echo "$mode ext filesystem by resize2fs ..."
|
|
echo "resize2fs $freeloop ${total}M"
|
|
e2fsck -f $freeloop
|
|
resize2fs $freeloop ${total}M
|
|
ret=$?
|
|
else
|
|
echo "$mode xfs filesystem by xfs_growfs ..."
|
|
tmpdir=$(mktemp -d)
|
|
mount $freeloop $tmpdir
|
|
xfs_growfs $freeloop
|
|
ret=$?
|
|
umount $tmpdir && rm -rf $tmpdir
|
|
fi
|
|
|
|
losetup -d $freeloop
|
|
|
|
if [ $ret -eq 0 -a "$mode" = "Shrink" ]; then
|
|
echo "truncate persistent file ..."
|
|
truncate "$file" -s ${total}M
|
|
ret=$?
|
|
fi
|
|
|
|
echo ""
|
|
if [ $ret -eq 0 ]; then
|
|
echo "======= SUCCESS ========="
|
|
else
|
|
echo "======= FAILED ========="
|
|
fi
|
|
echo ""
|