tools: acrnd: the deamon for acrn-manager

There will be a daemon running on SOS: to forward wakeup_reason to
acrn-dm; to co-ordinate the lifecycle of VMs and SOS; to handle
ioc-timed wakeup/poweron.

1.to forward wakeup_reason to acrn-dm
acrnd is responsible to retrive wakeup_reason from SOS lifecycle
service and attach the wakeup_reason to acrn-dm parameter for ioc-dm;

2.co-ordinate the lifecycle of VMs and SOS
When SOS is about to suspend/shutdown, SOS lifecycle service will
send a request to acrnd to guarantee all guest VMs are suspended
or shutdown before SOS suspending/shutdown process continue. On
receiver the request, acrnd starts polling the guest VMs state, and
notify SOS lifecycle service when all guest VMs are put in proper
state gracefully.

3.handle ioc-timed wakeup/poweron
For vechile specific mode like garage mode, guest UOS may need to
wakeup/poweron in a future time for tasks such as map updating etc.
To setup a timed wakeup/poweron, ioc-dm will send request to acrnd,
acrnd maintains a list of timed requests from guest VMs, and acrnd
selects the nearest request and send it to SOS lifecycle service
who will setup the physical IOC.

Reviewed-by: Yan Like <like.yan@intel.com>
Acked-by: Geoffroy Van Cutsem <geoffroy.vancutsem@intel.com>
Signed-off-by: Tao Yuhong <yuhong.tao@intel.com>

tools/acrn-manager/Makefile

@@ -4,6 +4,8 @@ OUT_DIR ?= .
 CFLAGS := -Wall
 CFLAGS += -I../../devicemodel/include
 CFLAGS += -I../../devicemodel/include/public
+CFLAGS += -I../../hypervisor/include
+
 ifeq ($(RELEASE),0)
 CFLAGS += -g -DMNGR_DEBUG
 endif
@@ -13,7 +15,7 @@ LDFLAGS += -lacrn-mngr
 LDFLAGS +=  -lpthread
 
 .PHONY: all
-all: $(OUT_DIR)/libacrn-mngr.a $(OUT_DIR)/acrn_mngr.h $(OUT_DIR)/acrnctl
+all: $(OUT_DIR)/libacrn-mngr.a $(OUT_DIR)/acrn_mngr.h $(OUT_DIR)/acrnctl $(OUT_DIR)/acrnd
 
 $(OUT_DIR)/libacrn-mngr.a: acrn_mngr.c acrn_mngr.h
 	$(CC) $(CFLAGS) -c acrn_mngr.c -o $(OUT_DIR)/acrn_mngr.o
@@ -27,6 +29,12 @@ endif
 $(OUT_DIR)/acrnctl: acrnctl.c acrn_mngr.h $(OUT_DIR)/libacrn-mngr.a
 	$(CC) -o $(OUT_DIR)/acrnctl acrnctl.c acrn_vm_ops.c $(CFLAGS) $(LDFLAGS)
 
+$(OUT_DIR)/acrnd: acrnd.c $(OUT_DIR)/libacrn-mngr.a
+	$(CC) -o $(OUT_DIR)/acrnd acrnd.c acrn_vm_ops.c $(CFLAGS) $(LDFLAGS)
+ifneq ($(OUT_DIR),.)
+	cp ./acrnd.service $(OUT_DIR)/acrnd.service
+endif
+
 .PHONY: clean
 clean:
 	rm -f $(OUT_DIR)/acrnctl
@@ -34,9 +42,14 @@ clean:
 	rm -f $(OUT_DIR)/libacrn-mngr.a
 ifneq ($(OUT_DIR),.)
 	rm -f $(OUT_DIR)/acrn_mngr.h
+	rm -f $(OUT_DIR)/acrnd.service
 endif
+	rm -f $(OUT_DIR)/acrnd
 
 .PHONY: install
 install: $(OUT_DIR)/acrnctl
 	install -d $(DESTDIR)/usr/bin
+	install -d $(DESTDIR)/usr/lib/systemd/system
 	install -t $(DESTDIR)/usr/bin $(OUT_DIR)/acrnctl
+	install -t $(DESTDIR)/usr/bin $(OUT_DIR)/acrnd
+	install -p -D -m 0644 $(OUT_DIR)/acrnd.service $(DESTDIR)/usr/lib/systemd/system

tools/acrn-manager/acrnd.c

@@ -0,0 +1,114 @@
+/*
+ * Copyright (C)2018 Intel Corporation
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <time.h>
+#include <pthread.h>
+#include <sys/queue.h>
+#include <sys/stat.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <dirent.h>
+#include <stdbool.h>
+#include <errno.h>
+#include "mevent.h"
+#include "acrnctl.h"
+#include "acrn_mngr.h"
+#include "ioc.h"
+
+#define TIMER_LIST_FILE "/opt/acrn/conf/timer_list"
+
+/* load/store_timer_list to file to keep timers if SOS poweroff */
+int load_timer_list(void)
+{
+	return -1;
+}
+
+static int active_all_vms(void)
+{
+	return -1;
+}
+
+#define SOS_LCS_SOCK		"sos-lcs"
+#define ACRND_NAME		"acrnd"
+static int acrnd_fd = -1;
+
+unsigned get_sos_wakeup_reason(void)
+{
+	return 0;
+}
+
+static void handle_timer_req(struct mngr_msg *msg, int client_fd, void *param)
+{
+}
+
+static int store_timer_list(void)
+{
+	return -1;
+}
+
+static void handle_acrnd_stop(struct mngr_msg *msg, int client_fd, void *param)
+{
+}
+
+void handle_acrnd_resume(struct mngr_msg *msg, int client_fd, void *param)
+{
+}
+
+static void handle_on_exit(void)
+{
+	store_timer_list();
+
+	if (acrnd_fd > 0) {
+		mngr_close(acrnd_fd);
+		acrnd_fd = -1;
+	}
+}
+
+int init_vm(void)
+{
+	unsigned int wakeup_reason;
+	struct stat st;
+
+	if (!stat(TIMER_LIST_FILE, &st))
+		if (S_ISREG(st.st_mode))
+			return load_timer_list();
+
+	/* init all UOSs, according wakeup_reason */
+	wakeup_reason = get_sos_wakeup_reason();
+
+	if (wakeup_reason & CBC_WK_RSN_RTC)
+		return load_timer_list();
+	else {
+		/* TODO: auto start UOSs */
+		return active_all_vms();
+	}
+}
+
+int main(int argc, char *argv[])
+{
+	/* create listening thread */
+	acrnd_fd = mngr_open_un(ACRND_NAME, MNGR_SERVER);
+	if (acrnd_fd < 0) {
+		pdebug();
+		return -1;
+	}
+
+	if (init_vm()) {
+		pdebug();
+		return -1;
+	}
+
+	unlink(TIMER_LIST_FILE);
+
+	atexit(handle_on_exit);
+
+	mngr_add_handler(acrnd_fd, ACRND_TIMER, handle_timer_req, NULL);
+	mngr_add_handler(acrnd_fd, ACRND_STOP, handle_acrnd_stop, NULL);
+	mngr_add_handler(acrnd_fd, ACRND_RESUME, handle_acrnd_resume, NULL);
+
+	return 0;
+}

tools/acrn-manager/acrnd.service

@@ -0,0 +1,11 @@
+[Unit]
+Description=ACRN manager deamon
+
+[Service]
+Type=simple
+ExecStart=/usr/bin/acrnd
+ExecStop=/usr/bin/killall -s TERM acrnd
+
+[Install]
+WantedBy=multi-user.target
+