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|
#!/usr/bin/env bash
die() {
echo ${@}
exit 1
}
usage()
{
cat << EOF
$0: sets up a chroot environment for building the ceph server
usage:
-h Show this message
-r [install_dir] location of the root filesystem to install to
example: -r /images/sepia/
-s [src_dir] location of the directory with the source code
example: -s ./src/ceph
EOF
}
cleanup() {
umount -l "${INSTALL_DIR}/mnt/tmp"
umount -l "${INSTALL_DIR}/proc"
umount -l "${INSTALL_DIR}/sys"
}
INSTALL_DIR=
SRC_DIR=
while getopts “hr:s:” OPTION; do
case $OPTION in
h) usage; exit 1 ;;
r) INSTALL_DIR=$OPTARG ;;
s) SRC_DIR=$OPTARG ;;
?) usage; exit
;;
esac
done
[ $EUID -eq 0 ] || die "This script uses chroot, which requires root permissions."
[ -d "${INSTALL_DIR}" ] || die "No such directory as '${INSTALL_DIR}'. \
You must specify an install directory with -r"
[ -d "${SRC_DIR}" ] || die "no such directory as '${SRC_DIR}'. \
You must specify a source directory with -s"
readlink -f ${SRC_DIR} || die "readlink failed on ${SRC_DIR}"
ABS_SRC_DIR=`readlink -f ${SRC_DIR}`
trap cleanup INT TERM EXIT
mount --bind "${ABS_SRC_DIR}" "${INSTALL_DIR}/mnt/tmp" || die "bind mount failed"
mount -t proc none "${INSTALL_DIR}/proc" || die "mounting proc failed"
mount -t sysfs none "${INSTALL_DIR}/sys" || die "mounting sys failed"
echo "$0: starting chroot."
echo "cd /mnt/tmp before building"
echo
chroot ${INSTALL_DIR} env HOME=/mnt/tmp /bin/bash
echo "$0: exiting chroot."
exit 0
|
