log: Set log level in parasite

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

include/parasite.h

@@ -19,7 +19,7 @@
 
 enum {
 	PARASITE_CMD_INIT,
-	PARASITE_CMD_SET_LOGFD,
+	PARASITE_CMD_CFG_LOG,
 	PARASITE_CMD_FINI,
 
 	PARASITE_CMD_DUMPPAGES_INIT,
@@ -44,6 +44,10 @@ struct parasite_init_args {
 	struct sockaddr_un	p_addr;
 };
 
+struct parasite_log_args {
+	int log_level;
+};
+
 struct parasite_dump_pages_args {
 	VmaEntry		vma_entry;
 	unsigned long		nrpages_dumped;	/* how many pages are dumped */

parasite-syscall.c

@@ -360,12 +360,15 @@ static int parasite_prep_file(int fd, struct parasite_ctl *ctl)
 static int parasite_set_logfd(struct parasite_ctl *ctl, pid_t pid)
 {
 	int ret;
+	struct parasite_log_args a;
 
 	ret = parasite_send_fd(ctl, log_get_fd());
 	if (ret)
 		return ret;
 
-	ret = parasite_execute(PARASITE_CMD_SET_LOGFD, ctl, NULL, 0);
+	a.log_level = log_get_loglevel();
+
+	ret = parasite_execute(PARASITE_CMD_CFG_LOG, ctl, &a, sizeof(a));
 	if (ret < 0)
 		return ret;
 

parasite.c

@@ -419,13 +419,14 @@ out_send_fd:
 	return ret;
 }
 
-static int parasite_set_logfd()
+static int parasite_cfg_log(struct parasite_log_args *args)
 {
 	int ret;
 
 	ret = recv_fd(tsock);
 	if (ret >= 0) {
 		log_set_fd(ret);
+		log_set_loglevel(args->log_level);
 		ret = 0;
 	}
 
@@ -459,8 +460,8 @@ int __used parasite_service(unsigned int cmd, void *args)
 		return init((struct parasite_init_args *) args);
 	case PARASITE_CMD_FINI:
 		return fini();
-	case PARASITE_CMD_SET_LOGFD:
-		return parasite_set_logfd();
+	case PARASITE_CMD_CFG_LOG:
+		return parasite_cfg_log((struct parasite_log_args *) args);
 	case PARASITE_CMD_DUMPPAGES_INIT:
 		return dump_pages_init();
 	case PARASITE_CMD_DUMPPAGES_FINI: