From: Taeyoung Kim <ty317.kim@samsung.com>
Date: Thu, 28 Apr 2016 06:46:24 +0000 (+0900)
Subject: external: add function to get root path
X-Git-Tag: submit/tizen/20160510.075001~4
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f417cc7beddef2029c733c1a524eb823134fc28c;p=platform%2Fcore%2Fsystem%2Flibstorage.git

external: add function to get root path

- External storages are handled by deviced, and deviced
  knows the information about root paths of storages.
  Thus dbus method from deviced is used to get root path
  information.

Change-Id: I5ca86c1c9280bacc78d7f07fc55617ac9c397bb4
Signed-off-by: Taeyoung Kim <ty317.kim@samsung.com>
---

diff --git a/src/storage-external-dbus.c b/src/storage-external-dbus.c
index 2c63d76..e4f4c49 100755
--- a/src/storage-external-dbus.c
+++ b/src/storage-external-dbus.c
@@ -444,3 +444,30 @@ void storage_ext_unregister_device_change(storage_ext_changed_cb func)
 		free(callback);
 	}
 }
+
+int storage_ext_get_device_info(int storage_id, storage_ext_device *info)
+{
+	GVariant *result;
+
+	result = dbus_method_call_sync(STORAGE_EXT_BUS_NAME,
+			STORAGE_EXT_PATH_MANAGER,
+			STORAGE_EXT_IFACE_MANAGER,
+			"GetDeviceInfoByID",
+			g_variant_new("(i)", storage_id));
+	if (!result) {
+		_E("There is no storage with the storage id (%d)", storage_id);
+		return -ENODEV;
+	}
+
+	g_variant_get(result, "(issssssisibii)",
+			&info->type, &info->devnode, &info->syspath,
+			&info->fs_usage, &info->fs_type,
+			&info->fs_version, &info->fs_uuid,
+			&info->readonly, &info->mount_point,
+			&info->state, &info->primary,
+			&info->flags, &info->storage_id);
+
+	g_variant_unref(result);
+
+	return 0;
+}
diff --git a/src/storage-external-dbus.h b/src/storage-external-dbus.h
index 98522d5..e9db898 100644
--- a/src/storage-external-dbus.h
+++ b/src/storage-external-dbus.h
@@ -82,4 +82,6 @@ int storage_ext_get_list(dd_list **list);
 int storage_ext_register_device_change(storage_ext_changed_cb func, void *data);
 void storage_ext_unregister_device_change(storage_ext_changed_cb func);
 
+int storage_ext_get_device_info(int storage_id, storage_ext_device *info);
+
 #endif /* __STORAGE_EXTERNAL_DBUS_H__ */
diff --git a/src/storage-external.c b/src/storage-external.c
index 6308c3b..63d564a 100755
--- a/src/storage-external.c
+++ b/src/storage-external.c
@@ -191,4 +191,32 @@ int storage_ext_unregister_cb(enum storage_cb_type type, struct storage_cb_info
 		storage_ext_unregister_device_change(storage_ext_state_changed);
 
 	return 0;
-}
\ No newline at end of file
+}
+
+int storage_ext_get_root(int storage_id, char *path, size_t len)
+{
+	storage_ext_device *dev;
+	int ret;
+
+	if (storage_id < 0 || !path)
+		return -EINVAL;
+
+	dev = calloc(1, sizeof(storage_ext_device));
+	if (!dev) {
+		_E("calloc failed");
+		return -ENOMEM;
+	}
+
+	ret = storage_ext_get_device_info(storage_id, dev);
+	if (ret < 0) {
+		_E("Cannot get the storage with id (%d, ret:%d)", storage_id, ret);
+		goto out;
+	}
+
+	snprintf(path, len, "%s", dev->mount_point);
+	ret = 0;
+
+out:
+	storage_ext_release_device(&dev);
+	return ret;
+}
diff --git a/src/storage-external.h b/src/storage-external.h
index cf5217b..a002c0b 100755
--- a/src/storage-external.h
+++ b/src/storage-external.h
@@ -24,5 +24,6 @@
 int storage_ext_foreach_device_list(storage_device_supported_cb callback, void *user_data);
 int storage_ext_register_cb(enum storage_cb_type type, struct storage_cb_info *info);
 int storage_ext_unregister_cb(enum storage_cb_type type, struct storage_cb_info *info);
+int storage_ext_get_root(int storage_id, char *path, size_t len);
 
 #endif /* __STORAGE_EXTERNAL_H__ */
diff --git a/src/storage.c b/src/storage.c
index e6a54f7..275b8a9 100644
--- a/src/storage.c
+++ b/src/storage.c
@@ -82,6 +82,8 @@ API int storage_get_root_directory(int storage_id, char **path)
 {
 	const struct storage_ops *st;
 	dd_list *elem;
+	char root[PATH_MAX];
+	int ret;
 
 	if (!path || storage_id < 0) {
 		_E("Invalid parameger");
@@ -100,7 +102,18 @@ API int storage_get_root_directory(int storage_id, char **path)
 		return STORAGE_ERROR_NONE;
 	}
 
-	/* TODO external storage */
+	/* external storage */
+	ret = storage_ext_get_root(storage_id, root, sizeof(root));
+	if (ret < 0) {
+		_E("Failed to get root path of external storage(%d, %d", storage_id, ret);
+		return STORAGE_ERROR_INVALID_PARAMETER;
+	}
+
+	*path = strdup(root);
+	if (!*path) {
+		_E("Failed to copy the root string : %d", errno);
+		return STORAGE_ERROR_OUT_OF_MEMORY;
+	}
 
 	return STORAGE_ERROR_NONE;
 }