systemd.bbclass: move to meta-systemd

1 files changed, 207 insertions, 0 deletions

diff --git a/meta-systemd/classes/systemd.bbclass b/meta-systemd/classes/systemd.bbclass
new file mode 100644
index 0000000000..2e585c3eca
--- /dev/null
+++ b/meta-systemd/classes/systemd.bbclass
@@ -0,0 +1,207 @@
+DEPENDS_append = " systemd-systemctl-native"
+
+systemd_postinst() {
+OPTS=""
+
+if [ -n "$D" ]; then
+    OPTS="--root=$D"
+fi
+
+systemctl $OPTS enable ${SYSTEMD_SERVICE}
+
+if [ -z "$D" ]; then
+    systemctl start ${SYSTEMD_SERVICE}
+fi
+}
+
+systemd_prerm() {
+if [ -z "$D" ]; then
+    systemctl stop ${SYSTEMD_SERVICE}
+fi
+}
+
+systemd_postrm() {
+systemctl disable ${SYSTEMD_SERVICE}
+}
+
+def get_package_var(d, var, pkg):
+	val = (d.getVar('%s_%s' % (var, pkg), d, 1) or "").strip()
+	if val == "":
+		val = (d.getVar(var, d, 1) or "").strip()
+	return val
+
+def systemd_after_parse(d):
+	def systemd_check_vars():
+		if d.getVar('BB_WORKERCONTEXT', True) is not None:
+			return
+
+		bb_filename = d.getVar('FILE')
+		packages = d.getVar('PACKAGES', 1)
+
+		# check SYSTEMD_PACKAGES
+		systemd_pkgs = d.getVar('SYSTEMD_PACKAGES', 1) or ""
+		if systemd_pkgs == "":
+			raise bb.build.FuncFailed, "\n\n%s inherits systemd but doesn't set SYSTEMD_PACKAGES" % bb_filename
+		for pkg_systemd in systemd_pkgs.split():
+			if pkg_systemd.find("-systemd") == -1:
+				if pkg_systemd != d.getVar('PN', 1):
+					raise bb.build.FuncFailed, \
+						"\n\n%s: %s in SYSTEMD_PACKAGES does not match <existing-package>-systemd or ${PN} (deprecated)" % \
+						(bb_filename, pkg_systemd)
+				else:
+					# Only complain if recipe lacks native systemd support
+					native_systemd_support = d.getVar('NATIVE_SYSTEMD_SUPPORT', 1) or ""
+					if native_systemd_support == "":
+						bb.warn("%s: it is recommended to set SYSTEMD_PACKAGES as <existing-package>-systemd" % bb_filename)
+			else:
+				pkg_systemd_base = pkg_systemd.replace('-systemd', '')
+				if pkg_systemd_base not in packages:
+					raise bb.build.FuncFailed, \
+						"\n\n%s: %s in SYSTEMD_PACKAGES does not match <existing-package>-systemd or ${PN} (deprecated)" % \
+						( bb_filename, pkg_systemd)
+
+	# prepend systemd-packages not already included
+	def systemd_create_package(pkg_systemd):
+		packages = d.getVar('PACKAGES', 1)
+		if not pkg_systemd in packages:
+			packages = "%s %s" % (pkg_systemd, packages)
+			d.setVar('PACKAGES', packages)
+
+
+	bpn = d.getVar('BPN', 1)
+	if bpn + "-native" != d.getVar('PN', 1) and \
+		    bpn + "-cross" != d.getVar('PN', 1) and \
+		    bpn + "-nativesdk" != d.getVar('PN', 1):
+		systemd_check_vars()
+		for pkg_systemd in d.getVar('SYSTEMD_PACKAGES', 1).split():
+			systemd_create_package(pkg_systemd)
+
+
+python __anonymous() {
+    systemd_after_parse(d)
+}
+
+# automatically install all *.service and *.socket supplied in recipe's SRC_URI
+do_install_append() {
+    for service in `find ${WORKDIR} -maxdepth 1 -name '*.service' -o -name '*.socket'` ; do
+	# ensure installing systemd-files only (e.g not avahi *.service)
+	if grep -q '\[Unit\]' $service ; then
+		install -d ${D}${systemd_unitdir}/system
+		install -m 644 $service ${D}${systemd_unitdir}/system
+	fi
+    done
+}
+
+python populate_packages_prepend () {
+	def systemd_generate_package_scripts(pkg):
+		bb.debug(1, 'adding systemd calls to postinst/postrm for %s' % pkg)
+		localdata = bb.data.createCopy(d)
+		overrides = bb.data.getVar("OVERRIDES", localdata, 1)
+		bb.data.setVar("OVERRIDES", "%s:%s" % (pkg, overrides), localdata)
+		bb.data.update_data(localdata)
+
+		"""
+		systemd postinst is appended here because pkg_postinst may require to
+		execute on the target. Not doing so may cause systemd postinst invoked
+		twice to cause unwanted warnings.
+		""" 
+		postinst = bb.data.getVar('pkg_postinst', localdata, 1)
+		if not postinst:
+			postinst = '#!/bin/sh\n'
+		postinst += bb.data.getVar('systemd_postinst', localdata, 1)
+		bb.data.setVar('pkg_postinst_%s' % pkg, postinst, d)
+
+		prerm = bb.data.getVar('pkg_prerm', localdata, 1)
+		if not prerm:
+			prerm = '#!/bin/sh\n'
+		prerm += bb.data.getVar('systemd_prerm', localdata, 1)
+		bb.data.setVar('pkg_prerm_%s' % pkg, prerm, d)
+
+		postrm = bb.data.getVar('pkg_postrm', localdata, 1)
+		if not postrm:
+			postrm = '#!/bin/sh\n'
+		postrm += bb.data.getVar('systemd_postrm', localdata, 1)
+		bb.data.setVar('pkg_postrm_%s' % pkg, postrm, d)
+
+	# add files to FILES_*-systemd if existent and not already done
+	def systemd_append_file(pkg_systemd, file_append):
+		appended = False
+		if os.path.exists('${D}' + file_append):
+			var_name = "FILES_" + pkg_systemd
+			files = d.getVar(var_name, 0) or ""
+			if file_append not in files.split():
+				d.setVar(var_name, "%s %s" % (files, file_append))
+				appended = True
+		return appended
+
+	# add systemd files to FILES_*-systemd, parse for Also= and follow recursive
+	def systemd_add_files_and_parse(pkg_systemd, path, service, keys):
+		# avoid infinite recursion
+		if systemd_append_file(pkg_systemd, path + service):
+			fullpath = '${D}' + path + service
+			if service.find('.socket') != -1:
+				# for *.socket add *.service and *@.service
+				service_base = service.replace('.socket', '')
+				systemd_add_files_and_parse(pkg_systemd, path, service_base + '.service', keys)
+				systemd_add_files_and_parse(pkg_systemd, path, service_base + '@.service', keys)
+			for key in keys.split():
+				# recurse all dependencies found in keys ('Also';'Conflicts';..) and add to files
+				cmd = "grep %s %s | sed 's,%s=,,g' | tr ',' '\\n'" % (key, fullpath, key)
+				pipe = os.popen(cmd, 'r')
+				line = pipe.readline()
+				while line:
+					line = line.replace('\n', '')
+					systemd_add_files_and_parse(pkg_systemd, path, line, keys)
+					line = pipe.readline()
+				pipe.close()
+
+	# check service-files and call systemd_add_files_and_parse for each entry
+	def systemd_check_services():
+		searchpaths = '/etc/systemd/system/ /lib/systemd/system/ /usr/lib/systemd/system/'
+		systemd_packages = d.getVar('SYSTEMD_PACKAGES', 1)
+		has_exactly_one_service = len(systemd_packages.split()) == 1
+		if has_exactly_one_service:
+			has_exactly_one_service = len(get_package_var(d, 'SYSTEMD_SERVICE', systemd_packages).split()) == 1
+
+		keys = 'Also' # Conflicts??
+		if has_exactly_one_service:
+			# single service gets also the /dev/null dummies
+			keys = 'Also Conflicts'
+		# scan for all in SYSTEMD_SERVICE[]
+		for pkg_systemd in systemd_packages.split():
+			for service in get_package_var(d, 'SYSTEMD_SERVICE', pkg_systemd).split():
+				path_found = ''
+				for path in searchpaths.split():
+					if os.path.exists('${D}' + path + service):
+						path_found = path
+				if path_found != '':
+					systemd_add_files_and_parse(pkg_systemd, path_found, service, keys)
+				else:
+					raise bb.build.FuncFailed, "\n\nFor package %s SYSTEMD_SERVICE-entry %s does not exist" % \
+						(pkg_systemd, service)
+
+	# *-systemd packages get RDEPENDS to systemd and their base package
+	def systemd_add_rdepends(pkg_systemd):
+		# RDEPENDS_${pkg_systemd} += pkg_systemd_base systemd
+		rdepends = d.getVar('RDEPENDS_' + pkg_systemd, 1) or ""
+		rdepends_arr = rdepends.split()
+		if not 'systemd' in rdepends_arr:
+			rdepends = '%s %s' % (rdepends, 'systemd')
+		pkg_systemd_base = pkg_systemd.replace('-systemd', '')
+		# no automatism for:
+		# recipes setting rdepends themselves AND
+		# not rdepending myself AND
+		# avoid double entries
+		if len(rdepends_arr) == 0 and pkg_systemd != '${PN}' and not pkg_systemd_base in rdepends:
+			rdepends = '%s %s' % (rdepends, pkg_systemd_base)
+		d.setVar('RDEPENDS_' + pkg_systemd, rdepends)
+
+
+	# run all modifications once when creating package
+	if os.path.exists('${D}'):
+		for pkg_systemd in d.getVar('SYSTEMD_PACKAGES', 1).split():
+			if get_package_var(d, 'SYSTEMD_SERVICE', pkg_systemd) != "":
+				systemd_generate_package_scripts(pkg_systemd)
+				systemd_add_rdepends(pkg_systemd)
+		systemd_check_services()
+}