iSulad: ignore shared shm of system container

Signed-off-by: NLiuHao <liuhao27@huawei.com>

iSulad.spec

 %global _version 1.1.12
-%global _release 20200311.212052.git8d13b09e
+%global _release 20200317.200806.git18c7747a
 %global is_systemd 1
 %global debug_package %{nil}
 

src/contrib/config/systemcontainer_config.json

@@ -96,6 +96,18 @@
 				"ro"
 			]
 		},
+		{
+			"destination": "/dev/shm",
+			"type": "tmpfs",
+			"source": "shm",
+			"options": [
+				"nosuid",
+				"noexec",
+				"nodev",
+				"mode=1777",
+				"size=65536k"
+			]
+		},
 		{
 			"destination": "/sys/fs/cgroup",
 			"type": "cgroup",

src/services/execution/execute/execution_create.c

@@ -603,6 +603,10 @@ void umount_share_shm(container_t *cont)
     if (cont->hostconfig == NULL) {
         return;
     }
+    // ignore shm of system container
+    if (cont->hostconfig->system_container) {
+        return;
+    }
     if (cont->hostconfig->ipc_mode == NULL || is_shareable(cont->hostconfig->ipc_mode)) {
         if (cont->common_config == NULL || cont->common_config->shm_path == NULL) {
             return;

src/services/execution/spec/specs_mount.c

@@ -2276,6 +2276,10 @@ static int setup_ipc_dirs(oci_runtime_spec *oci_spec, host_config *host_spec,
     char *tmp_cid = NULL;
     char *right_path = NULL;
 
+    // ignore shm of system container
+    if (host_spec->system_container) {
+        return 0;
+    }
     // setup shareable dirs
     if (host_spec->ipc_mode == NULL || is_shareable(host_spec->ipc_mode)) {
         return prepare_share_shm(oci_spec, host_spec, v2_spec);