create file volume's parent directory when necessary

Signed-off-by: Peng Tao <bergwolf@gmail.com>

Author: bergwolf

src/util.c

@@ -208,6 +208,23 @@ int hyper_getgrouplist(const char *user, gid_t group, gid_t *groups, int *ngroup
 	return ret;
 }
 
+static int hyper_create_parent_dir(const char *hyper_path)
+{
+	char *p, *path = strdup(hyper_path);
+	int ret = 0;
+
+	if (path == NULL)
+		return -1;
+	p = strrchr(path, '/');
+	if (p != NULL && p != path) {
+		*p = '\0';
+		ret = hyper_mkdir(path, 0777);
+	}
+	free(path);
+
+	return ret;
+}
+
 int hyper_create_file(const char *hyper_path)
 {
 	int fd;
@@ -220,6 +237,9 @@ int hyper_create_file(const char *hyper_path)
 		return -1;
 	}
 
+	if (hyper_create_parent_dir(hyper_path) < 0)
+		return -1;
+
 	fd = open(hyper_path, O_CREAT|O_WRONLY, 0666);
 	if (fd < 0)
 		return -1;