lib/vardata.sh: New file

2 files changed, 57 insertions, 0 deletions

diff --git a/lib/local.mk b/lib/local.mk
index 84a2ee6..53b2d91 100644
--- a/lib/local.mk
+++ b/lib/local.mk
@@ -4,6 +4,7 @@ pkgdata_sources = \
 	lib/getopt.sh \
 	lib/fd.sh \
 	lib/dir.sh \
+	lib/vardata.sh \
 	lib/archplat.sh \
 	lib/deps.sh \
 	lib/substvars.sh \
diff --git a/lib/vardata.sh b/lib/vardata.sh
new file mode 100644
index 0000000..8800003
--- /dev/null
+++ b/lib/vardata.sh
@@ -0,0 +1,56 @@
+# Functions for getting variable/runtime data
+#
+# Copyright (C) 2015  Patrick "P. J." McDermott
+#
+# This file is part of the ProteanOS Development Kit.
+#
+# The ProteanOS Development Kit is free software: you can redistribute
+# it and/or modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# The ProteanOS Development Kit is distributed in the hope that it
+# will be useful, but WITHOUT ANY WARRANTY; without even the implied
+# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with the ProteanOS Development Kit.  If not, see
+# <http://www.gnu.org/licenses/>.
+
+[ "x${_VARDATA_SM+set}" = 'xset' ] && return 0
+_VARDATA_SM=1
+
+PKGLOCALSTATEDIR='@pkglocalstatedir@'
+VARDATA_DIRS='mount'
+
+vardatadir=
+
+init_vardata()
+{
+	local dir=
+
+	if ${in_place}; then
+		vardatadir="${builddir}/var"
+		for dir in ${VARDATA_DIRS}; do
+			mkdir -p "${vardatadir}/${dir}"
+		done
+	else
+		vardatadir="${PKGLOCALSTATEDIR}"
+	fi
+
+	return 0
+}
+
+get_vardata_dir()
+{
+	local dir="${1}"
+
+	case " ${VARDATA_DIRS} " in
+		*" ${dir} "*)
+			printf '%s/%s' "${vardatadir}" "${dir}"
+			;;
+	esac
+
+	return 0
+}