rmtfs-dir.service: Add systemd service to load EFS data from a directory

The EFS data can either be in a partition or a filesystem path. The rmtfs
allows both, but there is only a systemd service to use the former.

Add another systemd service that does the latter. By default, the EFS path
is /var/lib/rmtfs (which is the directory used by msm-cros-efs-loader.sh
and other tools that extract the EFS data) but this can be changed during
build by setting the RMTFS_EFS_PATH environment variable.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>

Makefile

@@ -6,6 +6,8 @@ prefix = /usr/local
 bindir := $(prefix)/bin
 servicedir := $(prefix)/lib/systemd/system
 
+RMTFS_EFS_PATH ?= /var/lib/rmtfs
+
 SRCS := qmi_rmtfs.c rmtfs.c rproc.c sharedmem.c storage.c util.c
 OBJS := $(SRCS:.c=.o)
 
@@ -15,13 +17,15 @@ $(OUT): $(OBJS)
 %.c: %.qmi
 	qmic -k < $<
 
-rmtfs.service: rmtfs.service.in
-	@sed 's+RMTFS_PATH+$(bindir)+g' $< > $@
+%.service: %.service.in
+	@sed -e 's+RMTFS_PATH+$(bindir)+g' -e 's+RMTFS_EFS_PATH+$(RMTFS_EFS_PATH)+g' $< > $@
 
-install: $(OUT) rmtfs.service
+install: $(OUT) rmtfs.service rmtfs-dir.service
 	@install -D -m 755 $(OUT) $(DESTDIR)$(prefix)/bin/$(OUT)
 	@install -D -m 644 rmtfs.service $(DESTDIR)$(servicedir)/rmtfs.service
+	@install -D -m 644 rmtfs-dir.service $(DESTDIR)$(servicedir)/rmtfs-dir.service
 
 clean:
 	rm -f $(OUT) $(OBJS) rmtfs.service
+	rm -f $(OUT) $(OBJS) rmtfs-dir.service
 

rmtfs-dir.service.in

@@ -0,0 +1,12 @@
+[Unit]
+Description=Qualcomm remotefs service
+Requires=qrtr-ns.service
+After=qrtr-ns.service
+
+[Service]
+ExecStart=RMTFS_PATH/rmtfs -s -o RMTFS_EFS_PATH
+Restart=always
+RestartSec=1
+
+[Install]
+WantedBy=multi-user.target