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add swap partition

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Signed-off-by: Michel-FK <michel.stempin@funkey-project.com>
This commit is contained in:
Michel-FK
2020-11-02 16:49:47 +01:00
parent c5c4b15523
commit 79a7be9716
11 changed files with 113 additions and 107 deletions
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93
FunKey/board/funkey/rootfs-overlay/usr/local/sbin/first_boot
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@@ -8,8 +8,8 @@ source /usr/local/lib/utils
SELF=$(basename $0)
# Find out the root partition number from the kernel command line
root_part=$(cat /proc/cmdline | sed -n 's|^.*root=/dev/\([^ ]*\).*|\1|p')
root_part_num=${root_part#mmcblk0p}
root_part=$(cat /proc/cmdline | sed -n 's|^.*root=\([^ ]*\).*|\1|p')
root_part_num=${root_part#/dev/mmcblk0p}
if [ "${root_part_num}" -eq 1 ]; then
die 0 "recovery mode"
elif [ "${root_part_num}" = "{$root_part}" ]; then
@@ -17,9 +17,13 @@ elif [ "${root_part_num}" = "{$root_part}" ]; then
elif [ "${root_part_num}" -ne 2 ]; then
die 2 "unknown partition layout, aborting"
fi
let swap_part_num=${root_part_num}+1
swap_part=/dev/mmcblk0p${swap_part_num}
let share_part_num=${swap_part_num}+1
share_part=/dev/mmcblk0p${share_part_num}
check_swap () {
[ -f /swap ] && die 0 "nothing to do"
check_first_boot () {
[ -f /.first_boot ] && die 0 "nothing to do"
return 0
}
@@ -59,49 +63,57 @@ reload_partition_table () {
}
resize_rootfs_filesystem () {
resize2fs /dev/${root_part} >/dev/null 2>&1 || die 10 "cannot resize the root filesystem, aborting"
resize2fs ${root_part} >/dev/null 2>&1 || die 10 "cannot resize the root filesystem, aborting"
return 0
}
create_swap_file () {
local root_part_line=$(df | grep /dev/root)
set ${root_part_line}
local space_left=${4}
if [ ${space_left} -lt 131072 ]; then
die 12 "not enough free space for swap file found, aborting"
fi
# Create an empty 128MB /swap file, change its permissions and format it as swap
dd if=/dev/zero of=/swap bs=32M count=4 >/dev/null 2>&1 &&
chmod 0600 /swap >/dev/null 2>&1 &&
mkswap /swap >/dev/null 2>&1
if [ $? -ne 0 ]; then
rm /swap
die 13 "cannot create swap file, aborting"
fi
return 0
}
enable_swap_file () {
swapon -a >/dev/null 2>&1 || die 14 "cannot enable swap file, aborting"
return 0
}
create_backing_store_partition () {
mount | grep -q /dev/mmcblk0p3
create_swap () {
mount | grep -q ${share_part}
if [ $? -ne 0 ]; then
# Check that the last partition is the rootfs partition
local last_part_line=$(sgdisk -p /dev/mmcblk0 2>/dev/null | tail -n 1)
set ${last_part_line}
local last_part=${1}
if [ "$last_part" != "$root_part_num" ]; then
local last_part_num=${1}
if [ "$last_part_num" != "$root_part_num" ]; then
die 11 "rootfs is not the last partition. Don't know how to create the backing store partition"
fi
# Create an additional linux swap partition
let swap_part_num=${last_part_num}+1
swap_part=/dev/mmcblk0p${swap_part_num}
sgdisk -n ${swap_part_num}:0:+128M -c ${swap_part_num}:swap -t ${swap_part_num}:8200 /dev/mmcblk0 >/dev/null 2>&1 || die 12 "cannot create the swap partition, aborting"
sync
partprobe /dev/mmcblk0 >/dev/null 2>&1 || die 13 "cannot reload the partition table, aborting"
mkswap ${swap_part} >/dev/null 2>&1
if [ $? -ne 0 ]; then
die 14 "cannot create swap file, aborting"
fi
fi
return 0
}
enable_swap () {
swapon -a >/dev/null 2>&1 || die 15 "cannot enable swap file, aborting"
return 0
}
create_backing_store_partition () {
mount | grep -q ${share_part}
if [ $? -ne 0 ]; then
# Check that the last partition is the swap partition
local last_part_line=$(sgdisk -p /dev/mmcblk0 2>/dev/null | tail -n 1)
set ${last_part_line}
local last_part_num=${1}
if [ "${last_part_num}" != "${swap_part_num}" ]; then
die 15 "rootfs is not the last partition. Don't know how to create the backing store partition"
fi
# Create an additional Microsoft basic data partition share partition that fills the disk
let share_part=${last_part}+1
sgdisk -n ${share_part}:0:-0 -c ${share_part}:share -t ${share_part}:0700 /dev/mmcblk0 >/dev/null 2>&1 || die 16 "cannot create the backing store partition, aborting"
let share_part_num=${last_part_num}+1
share_part=/dev/mmcblk0p${share_part_num}
sgdisk -n ${share_part_num}:0:-0 -c ${share_part_num}:share -t ${share_part_num}:0700 /dev/mmcblk0 >/dev/null 2>&1 || die 16 "cannot create the backing store partition, aborting"
sync
fi
return 0
@@ -110,7 +122,7 @@ create_backing_store_partition () {
format_backing_store_partition () {
# Format the backing store as FAT32
mkfs.vfat /dev/mmcblk0p3 >/dev/null 2>&1 || die 17 "cannot format the backing store partition"
mkfs.vfat ${share_part} >/dev/null 2>&1 || die 17 "cannot format the backing store partition"
# Add file to force assembly tests
mount /mnt/ || die 18 "Cannot mount /mnt"
@@ -119,9 +131,9 @@ format_backing_store_partition () {
return 0
}
notif "First boot detected!"
check_swap
check_root_id
check_first_boot
notif "First boot detected!"
notif "1/8 Resize root partition"
resize_rootfs_partition
@@ -133,10 +145,10 @@ notif "3/8 Resize root filsystem"
resize_rootfs_filesystem
notif "4/8 Create swap"
create_swap_file
create_swap
notif "5/8 Enable swap"
enable_swap_file
enable_swap
notif "6/8 Create share partition"
create_backing_store_partition
@@ -148,5 +160,6 @@ notif "8/8 Format share partition"
format_backing_store_partition
notif "First boot setup finished!"
touch /.first_boot
sleep 1
clear_notif