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#!/bin/bash
# Example:
#
# 1) sudo mount /data/diskimages/rootfs-arm64.img /mnt/tst
# 2) ./on_chroot.sh /mnt/tst "cd /usr/local/projects/zafena/direct_bt ; sh scripts/build.sh"
# 3) sudo ./imagetool.sh -u /mnt/tst
#
# set -x
username=${USER}
BASE_DIR="$(dirname $0)"
export ROOTFS_DIR=$1
shift 1
if [ -z "${ROOTFS_DIR}" ]; then
echo Usage "$0 <rootfs-dir> commands..."
exit 1
fi
if ! mount | grep -q "$(realpath "${ROOTFS_DIR}"/proc)"; then
sudo mount -t proc proc "${ROOTFS_DIR}/proc"
fi
if ! mount | grep -q "$(realpath "${ROOTFS_DIR}"/dev)"; then
sudo mount --bind /dev "${ROOTFS_DIR}/dev"
fi
if ! mount | grep -q "$(realpath "${ROOTFS_DIR}"/dev/pts)"; then
sudo mount --bind /dev/pts "${ROOTFS_DIR}/dev/pts"
fi
if ! mount | grep -q "$(realpath "${ROOTFS_DIR}"/sys)"; then
sudo mount --bind /sys "${ROOTFS_DIR}/sys"
fi
#if ! mount | grep -q "$(realpath "${ROOTFS_DIR}"/usr/local/projects)"; then
# mkdir -p "${ROOTFS_DIR}/usr/local/projects"
# sudo mount --bind /usr/local/projects "${ROOTFS_DIR}/usr/local/projects"
#fi
sudo /sbin/capsh --user=$username --drop=cap_setfcap "--chroot=${ROOTFS_DIR}/" -- -c "$*"
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