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@shakalaca

shakalaca/2-mount

Last active Mar 28, 2020
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init in initrd.img of Android x86 project
#
# By Chih-Wei Huang <cwhuang@linux.org.tw>
# Last updated 2017/04/23
#
# License: GNU Public License
# We explicitely grant the right to use the scripts
# with Android-x86 project.
#
mount_data()
{
mountpoint -q data && return
if [ -n "$DATA" ]; then
blk=`basename $DATA`
if [ -b "/dev/$blk" ]; then
[ ! -e /dev/block/$blk ] && ln /dev/$blk /dev/block
mount -o noatime /dev/block/$blk data
elif [ "$DATA" = "9p" ]; then
modprobe 9pnet_virtio
mount -t 9p -o trans=virtio data data -oversion=9p2000.L,posixacl,cache=loose
else
remount_rw
mkdir -p /mnt/$SRC/$DATA
mount --bind /mnt/$SRC/$DATA data
fi
elif [ -d /mnt/$SRC/data ]; then
remount_rw
mount --bind /mnt/$SRC/data data
elif [ -f /mnt/$SRC/data.img ]; then
remount_rw
mount -o loop,noatime /mnt/$SRC/data.img data
else
device_mount_data || mount -t tmpfs tmpfs data
fi
}
mount_sdcard()
{
mountpoint -q sdcard && return
if [ -n "$SDCARD" -a -e /mnt/$SRC$SDCARD ]; then
if [ ! -e /android$SDCARD ]; then
remount_rw
sddir=`dirname $SDCARD`
mkdir /android$sddir
mount --bind /mnt/$SRC$sddir /android$sddir
fi
elif [ "$SDCARD" = "premount" ]; then
# WARNING: premount the sdcard is deprecated since froyo-x86.
# It is left only for backward compatibility and may be removed
# in the future.
if [ -d /mnt/$SRC/sdcard ]; then
remount_rw
mount --bind /mnt/$SRC/sdcard mnt/sdcard
elif [ -d data/sdcard ]; then
mount --bind data/sdcard mnt/sdcard
else
mount -o mode=2777,uid=1000,gid=1015 -t tmpfs tmpfs mnt/sdcard
fi
fi
}
#!/bin/busybox sh
#
# By Chih-Wei Huang <cwhuang@linux.org.tw>
# and Thorsten Glaser <tg@mirbsd.org>
#
# Last updated 2018/01/26
#
# License: GNU Public License
# We explicitely grant the right to use the scripts
# with Android-x86 project.
#
PATH=/sbin:/bin:/system/bin:/system/xbin; export PATH
# auto installation
[ -n "$AUTO_INSTALL" ] && INSTALL=1
# configure debugging output
if [ -n "$DEBUG" -o -n "$INSTALL" ]; then
LOG=/tmp/log
set -x
else
LOG=/dev/null
test -e "$LOG" || busybox mknod $LOG c 1 3
fi
exec 2>> $LOG
# early boot
if test x"$HAS_CTTY" != x"Yes"; then
# initialise /proc and /sys
busybox mount -t proc proc /proc
busybox mount -t sysfs sys /sys
# let busybox install all applets as symlinks
busybox --install -s
# spawn shells on tty 2 and 3 if debug or installer
if test -n "$DEBUG" || test -n "$INSTALL"; then
# ensure they can open a controlling tty
mknod /dev/tty c 5 0
# create device nodes then spawn on them
mknod /dev/tty2 c 4 2 && openvt
mknod /dev/tty3 c 4 3 && openvt
fi
if test -z "$DEBUG" || test -n "$INSTALL"; then
echo 0 0 0 0 > /proc/sys/kernel/printk
fi
# initialise /dev (first time)
mkdir -p /dev/block
echo /sbin/mdev > /proc/sys/kernel/hotplug
mdev -s
# re-run this script with a controlling tty
exec env HAS_CTTY=Yes setsid cttyhack /bin/sh "$0" "$@"
fi
# now running under a controlling tty; debug output from stderr into log file
# boot up Android
error()
{
echo $*
return 1
}
try_mount()
{
RW=$1; shift
if [ "${ROOT#*:/}" != "$ROOT" ]; then
# for NFS roots, use nolock to avoid dependency to portmapper
mount -o $RW,noatime,nolock $@
return $?
fi
case $(blkid $1) in
*TYPE=*ntfs*)
mount.ntfs-3g -o rw,force $@
;;
*TYPE=*)
mount -o $RW,noatime $@
;;
*)
return 1
;;
esac
}
check_root()
{
if [ "`dirname $1`" = "/dev" ]; then
[ -e $1 ] || return 1
blk=`basename $1`
[ ! -e /dev/block/$blk ] && ln $1 /dev/block
dev=/dev/block/$blk
else
dev=$1
fi
try_mount ro $dev /mnt || return 1
if [ -n "$iso" -a -e /mnt/$iso ]; then
mount --move /mnt /iso
mkdir /mnt/iso
mount -o loop /iso/$iso /mnt/iso
fi
if [ -e /mnt/$SRC/$RAMDISK ]; then
zcat /mnt/$SRC/$RAMDISK | cpio -id > /dev/null
elif [ -b /dev/$RAMDISK ]; then
zcat /dev/$RAMDISK | cpio -id > /dev/null
else
return 1
fi
if [ -e /mnt/$SRC/system.sfs ]; then
mount -o loop,noatime /mnt/$SRC/system.sfs system
if [ -e system/system.img ]; then
mount --move system /sfs
mount -o loop,noatime /sfs/system.img system
fi
elif [ -e /mnt/$SRC/system.img ]; then
remount_rw
mount -o loop,noatime /mnt/$SRC/system.img system
elif [ -s /mnt/$SRC/system/build.prop ]; then
remount_rw
mount --bind /mnt/$SRC/system system
elif [ -z "$SRC" -a -s /mnt/build.prop ]; then
mount --bind /mnt system
else
rm -rf *
return 1
fi
mkdir -p mnt
echo " found at $1"
rm /sbin/mke2fs
hash -r
}
remount_rw()
{
# "foo" as mount source is given to workaround a Busybox bug with NFS
# - as it's ignored anyways it shouldn't harm for other filesystems.
mount -o remount,rw foo /mnt
}
debug_shell()
{
if [ -x system/bin/sh ]; then
echo Running MirBSD Korn Shell...
USER="($1)" system/bin/sh -l 2>&1
else
echo Running busybox ash...
sh 2>&1
fi
}
echo -n Detecting Android-x86...
[ -z "$SRC" -a -n "$BOOT_IMAGE" ] && SRC=`dirname $BOOT_IMAGE`
[ -z "$RAMDISK" ] && RAMDISK=ramdisk.img || RAMDISK=${RAMDISK##/dev/}
for c in `cat /proc/cmdline`; do
case $c in
iso-scan/filename=*)
SRC=iso
eval `echo $c | cut -b1-3,18-`
;;
*)
;;
esac
done
mount -t tmpfs tmpfs /android
cd /android
while :; do
for device in ${ROOT:-/dev/[hmnsv][dmrv][0-9a-z]*}; do
check_root $device && break 2
mountpoint -q /mnt && umount /mnt
done
sleep 1
echo -n .
done
ln -s mnt/$SRC /src
ln -s android/system /
ln -s ../system/lib/firmware ../system/lib/modules /lib
if [ -n "$INSTALL" ]; then
zcat /src/install.img | ( cd /; cpio -iud > /dev/null )
fi
if [ -x system/bin/ln -a \( -n "$DEBUG" -o -n "$BUSYBOX" \) ]; then
mv /bin /lib .
sed -i 's|\( PATH.*\)|\1:/bin|' init.environ.rc
rm /sbin/modprobe
busybox mv /sbin/* sbin
rmdir /sbin
ln -s android/bin android/lib android/sbin /
hash -r
fi
# load scripts
for s in `ls /scripts/* /src/scripts/*`; do
test -e "$s" && source $s
done
# ensure keyboard driver is loaded
if [ -n "$INSTALL" -o -n "$DEBUG" ]; then
busybox modprobe -a atkbd hid-apple
auto_detect &
fi
if [ 0$DEBUG -gt 0 ]; then
echo -e "\nType 'exit' to continue booting...\n"
debug_shell debug-found
fi
# A target should provide its detect_hardware function.
# On success, return 0 with the following values set.
# return 1 if it wants to use auto_detect
[ "$AUTO" != "1" ] && detect_hardware && FOUND=1
[ -n "$INSTALL" ] && do_install
load_modules
mount_data
mount_sdcard
setup_tslib
setup_dpi
post_detect
if [ 0$DEBUG -gt 1 ]; then
echo -e "\nUse Alt-F1/F2/F3 to switch between virtual consoles"
echo -e "Type 'exit' to enter Android...\n"
debug_shell debug-late
SETUPWIZARD=${SETUPWIZARD:-0}
fi
[ "$SETUPWIZARD" = "0" ] && echo "ro.setupwizard.mode=DISABLED" >> default.prop
[ -n "$DEBUG" ] && SWITCH=${SWITCH:-chroot}
# We must disable mdev before switching to Android
# since it conflicts with Android's init
echo > /proc/sys/kernel/hotplug
export ANDROID_ROOT=/system
exec ${SWITCH:-switch_root} /android /init
# avoid kernel panic
while :; do
echo
echo ' Android-x86 console shell. Use only in emergencies.'
echo
debug_shell fatal-err
done
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