xbps-src: rename libexec helpers, they were too long.

xbps-src/libexec/chroot-helper.sh.in

@@ -0,0 +1,122 @@
+#!/bin/sh
+#-
+# Copyright (c) 2010-2011 Juan Romero Pardines.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#-
+
+HANDLER="$1"
+
+. @@XBPS_INSTALL_ETCDIR@@/xbps-src.conf
+
+if [ -n "${MASTERDIR}" ]; then
+	export XBPS_MASTERDIR="${MASTERDIR}"
+fi
+if [ -n "${HOSTDIR}" ]; then
+	export XBPS_HOSTDIR="${HOSTDIR}"
+fi
+
+
+REQFS="sys proc dev xbps host"
+
+mount_chroot_fs()
+{
+	local cnt f blah dowrite
+
+	for f in ${REQFS}; do
+		if [ ! -f ${XBPS_MASTERDIR}/.${f}_mount_bind_done ]; then
+			unset dowrite
+			echo -n "=> Mounting /${f} in chroot... "
+			if [ ! -d ${XBPS_MASTERDIR}/${f} ]; then
+				mkdir -p ${XBPS_MASTERDIR}/${f}
+			fi
+			case ${f} in
+				xbps)
+					blah=${XBPS_DISTRIBUTIONDIR}
+					dowrite="-w"
+					;;
+				host)
+					blah=${XBPS_HOSTDIR}
+					dowrite="-w"
+					;;
+				*) blah=/${f};;
+			esac
+			if [ -z "$XBPS_HOSTDIR" -a "$f" = "host" ]; then
+				echo "unset, ignoring."
+				continue
+			fi
+			[ ! -d ${blah} ] && echo "failed." && continue
+			@@XBPS_INSTALL_LIBEXECDIR@@/capmount \
+				${dowrite} ${blah} ${XBPS_MASTERDIR}/${f} \
+				2>/dev/null
+			if [ $? -eq 0 ]; then
+				echo 1 > ${XBPS_MASTERDIR}/.${f}_mount_bind_done
+				echo "done."
+			else
+				echo "FAILED!"
+				exit 1
+			fi
+		else
+			cnt=$(cat ${XBPS_MASTERDIR}/.${f}_mount_bind_done)
+			cnt=$((${cnt} + 1))
+			echo ${cnt} > ${XBPS_MASTERDIR}/.${f}_mount_bind_done
+		fi
+	done
+}
+
+umount_chroot_fs()
+{
+	local fs dir cnt
+
+	for fs in ${REQFS}; do
+		[ ! -f ${XBPS_MASTERDIR}/.${fs}_mount_bind_done ] && continue
+		cnt=$(cat ${XBPS_MASTERDIR}/.${fs}_mount_bind_done)
+		if [ ${cnt} -gt 1 ]; then
+			cnt=$((${cnt} - 1))
+			echo ${cnt} > ${XBPS_MASTERDIR}/.${fs}_mount_bind_done
+		else
+			echo -n "=> Unmounting ${fs} from chroot... "
+			@@XBPS_INSTALL_LIBEXECDIR@@/capumount \
+				${XBPS_MASTERDIR} ${fs} 2>/dev/null
+			if [ $? -eq 0 ]; then
+				rm -f ${XBPS_MASTERDIR}/.${fs}_mount_bind_done
+				echo "done."
+			else
+				echo "FAILED!!!"
+			fi
+		fi
+		unset fs
+	done
+}
+
+if [ $# -ne 1 ]; then
+	echo "$0: mount || umount"
+	exit 1
+fi
+
+case "${HANDLER}" in
+	mount) mount_chroot_fs;;
+	umount) umount_chroot_fs;;
+	*) echo "$0: invalid target." && exit 1;;
+esac
+
+exit 0