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|
#!/bin/bash
#
# Runs a command within a Poky chroot
#
set -e
case $# in
0)
echo "Invalid arguments."
echo "$ $0 <target> [command]"
exit 1
;;
1)
ROOTFS=$1
shift
# Set $1 to be the boot script
set -- /usr/bin/poky-chroot-launch
;;
*)
ROOTFS=$1
shift
# Now $1 onwards are the command and arguments to run
;;
esac
test -f "$ROOTFS/.pokychroot" || { echo "$ROOTFS is not setup for use as a Poky chroot." ; exit 1 ;}
# chrootuid doesn't handle relative paths, so ensure that the rootfs path is
# absolute
if test ${ROOTFS:0:1} != /; then
ROOTFS="$(pwd)/$ROOTFS"
fi
safe_mount() {
if ! mountpoint -q "$ROOTFS/$1"; then
sudo mount --bind $1 "$ROOTFS/$1"
fi
}
safe_umount() {
if mountpoint -q "$ROOTFS/$1"; then
sudo umount "$ROOTFS/$1"
fi
}
# Mount the directories we need
for m in /dev /dev/pts /dev/shm /proc /sys /tmp; do
safe_mount $m
done
# Set up the environment
export PATH=/bin:/usr/bin:/sbin:/usr/sbin
export HOME=/home/$USER
if [ ! -f "$ROOTFS/.pokychroot.init" ]; then
sudo chrootuid -i "$ROOTFS" $USER /bin/sh -c "/usr/bin/poky-chroot-init"
touch "$ROOTFS/.pokychroot.init"
fi
Xephyr :1 -ac -screen 640x480x16 &
# Go go go!
sudo chrootuid -i "$ROOTFS" $USER "$@" || /bin/true
# Trap term signals so we don't kill ourselves
trap true TERM
# send term signal to the process group
kill -- -$$
# Unmount TODO: only umount if there are no other sessions active, somehow.
for m in /tmp /sys /proc /dev/shm /dev/pts /dev; do
safe_umount $m
done
|
