Massive changes to allow installing pkgs in a chroot.

Some changes include:
 - Xstow is not used anymore, files are copied into masterdir.
 - a new target install-chroot has been created.
 - a new meta-template xbps-base-chroot has been created required for
   the install-chroot target.
 - Removed XBPS_SYSCONFDIR, /etc is used by default.
Other changes that I cannot remember right now...

--HG--
extra : convert_revision : fb57d9dafb56aeb03cc935580172e075ce584fd5

helper-templates/install-chroot.sh

@@ -0,0 +1,92 @@
+#
+# Helper to install packages into a sandbox in masterdir.
+# Actually this needs the xbps-base-chroot package installed.
+#
+
+# Umount stuff if SIGINT or SIGQUIT was caught
+trap umount_chroot_fs INT QUIT
+
+check_installed_pkg xbps-base-chroot 0.1
+if [ $? -ne 0 ]; then
+	echo "*** ERROR: xbps-base-chroot pkg not installed ***"
+	exit 1
+fi
+
+if [ "$(id -u)" -ne 0 ]; then
+	echo "*** ERROR: you must be root to use this target ***"
+	exit 1
+fi
+
+echo -n "=> Preparing sandbox on $XBPS_MASTERDIR... "
+
+if [ ! -x $XBPS_MASTERDIR/bin/sh ]; then
+	cd $XBPS_MASTERDIR/bin && ln -s bash sh
+fi
+
+if [ ! -f $XBPS_MASTERDIR/.xbps_perms_done ]; then
+	chown -R root:root $XBPS_MASTERDIR/*
+	chmod +s $XBPS_MASTERDIR/usr/libexec/pt_chown
+	cp -af /etc/passwd /etc/shadow /etc/group /etc/hosts $XBPS_MASTERDIR/etc
+	touch $XBPS_MASTERDIR/.xbps_perms_done
+fi
+
+for f in bin sbin tmp var sys proc dev xbps; do
+	[ ! -d $XBPS_MASTERDIR/$f ] && mkdir -p $XBPS_MASTERDIR/$f
+done
+
+for f in sys proc dev; do
+	if [ ! -f $XBPS_MASTERDIR/.${f}_mount_bind_done ]; then
+		mount -o bind /$f $XBPS_MASTERDIR/$f
+		[ $? -eq 0 ] && touch $XBPS_MASTERDIR/.${f}_mount_bind_done
+	fi
+done
+
+if [ ! -f $XBPS_MASTERDIR/.xbps_mount_bind_done ]; then
+	mount -o bind $XBPS_DISTRIBUTIONDIR $XBPS_MASTERDIR/xbps
+	[ $? -eq 0 ] && touch $XBPS_MASTERDIR/.xbps_mount_bind_done
+fi
+
+if [ ! -f $XBPS_MASTERDIR/.xbps_builddir_mount_bind_done ]; then
+	[ ! -d $XBPS_MASTERDIR/xbps-builddir ] && mkdir -p \
+		$XBPS_MASTERDIR/xbps-builddir
+	mount -o bind $XBPS_BUILDDIR $XBPS_MASTERDIR/xbps-builddir
+	[ $? -eq 0 ] && touch $XBPS_MASTERDIR/.xbps_builddir_mount_bind_done
+fi
+
+echo "XBPS_DISTRIBUTIONDIR=/xbps" > $XBPS_MASTERDIR/etc/xbps.conf
+echo "XBPS_MASTERDIR=/" >> $XBPS_MASTERDIR/etc/xbps.conf
+echo "XBPS_DESTDIR=/xbps/packages" >> $XBPS_MASTERDIR/etc/xbps.conf
+echo "XBPS_BUILDDIR=/xbps-builddir" >> $XBPS_MASTERDIR/etc/xbps.conf
+echo "XBPS_SRCDISTDIR=/xbps/srcdistdir" >> $XBPS_MASTERDIR/etc/xbps.conf
+echo "XBPS_CFLAGS=\"$XBPS_CFLAGS\"" >> $XBPS_MASTERDIR/etc/xbps.conf
+echo "XBPS_CXXFLAGS=\"\$XBPS_CFLAGS\"" >> $XBPS_MASTERDIR/etc/xbps.conf
+
+echo "done."
+
+install_chroot_pkg()
+{
+	local pkg="$1"
+
+	[ -z "$pkg" ] && return 1
+
+	echo -n "=> Rebuilding dynamic linker's cache..."
+	chroot $XBPS_MASTERDIR /sbin/ldconfig -c /etc/ld.so.conf
+	chroot $XBPS_MASTERDIR /sbin/ldconfig -C /etc/ld.so.cache
+	echo " done."
+
+	chroot $XBPS_MASTERDIR /xbps/xbps.sh install $pkg
+	umount_chroot_fs
+}
+
+umount_chroot_fs()
+{
+	for f in sys proc dev xbps xbps-builddir; do
+		umount $XBPS_MASTERDIR/$f
+	done
+
+	rm -f $XBPS_MASTERDIR/.xbps_builddir_mount_bind_done
+	rm -f $XBPS_MASTERDIR/.xbps_mount_bind_done
+	rm -f $XBPS_MASTERDIR/.sys_mount_bind_done
+	rm -f $XBPS_MASTERDIR/.dev_mount_bind_done
+	rm -f $XBPS_MASTERDIR/.proc_mount_bind_done
+}