[PATCH BlueZ v2 6/7] adapter: Add a public function to find a device by path

[Sonny Sasaka <sonnysasaka@chromium.org>]

The public function is motivated by the Battery Provider API code which
needs to probe whether a device exists.

Reviewed-by: Miao-chen Chou <mcchou@chromium.org>

---
 src/adapter.c | 33 ++++++++++++++++++++++++---------
 src/adapter.h |  2 ++
 2 files changed, 26 insertions(+), 9 deletions(-)

diff --git a/src/adapter.c b/src/adapter.c
index c0053000a..d27faaaa3 100644
--- a/src/adapter.c
+++ b/src/adapter.c
@@ -872,6 +872,30 @@ struct btd_device *btd_adapter_find_device(struct btd_adapter *adapter,
 	return device;
 }
 
+static int device_path_cmp(gconstpointer a, gconstpointer b)
+{
+	const struct btd_device *device = a;
+	const char *path = b;
+	const char *dev_path = device_get_path(device);
+
+	return strcasecmp(dev_path, path);
+}
+
+struct btd_device *btd_adapter_find_device_by_path(struct btd_adapter *adapter,
+						   const char *path)
+{
+	GSList *list;
+
+	if (!adapter)
+		return NULL;
+
+	list = g_slist_find_custom(adapter->devices, path, device_path_cmp);
+	if (!list)
+		return NULL;
+
+	return list->data;
+}
+
 static void uuid_to_uuid128(uuid_t *uuid128, const uuid_t *uuid)
 {
 	if (uuid->type == SDP_UUID16)
@@ -3184,15 +3208,6 @@ static gboolean property_get_roles(const GDBusPropertyTable *property,
 	return TRUE;
 }
 
-static int device_path_cmp(gconstpointer a, gconstpointer b)
-{
-	const struct btd_device *device = a;
-	const char *path = b;
-	const char *dev_path = device_get_path(device);
-
-	return strcasecmp(dev_path, path);
-}
-
 static DBusMessage *remove_device(DBusConnection *conn,
 					DBusMessage *msg, void *user_data)
 {
diff --git a/src/adapter.h b/src/adapter.h
index dcc574857..a77c7a61c 100644
--- a/src/adapter.h
+++ b/src/adapter.h
@@ -83,6 +83,8 @@ sdp_list_t *btd_adapter_get_services(struct btd_adapter *adapter);
 struct btd_device *btd_adapter_find_device(struct btd_adapter *adapter,
 							const bdaddr_t *dst,
 							uint8_t dst_type);
+struct btd_device *btd_adapter_find_device_by_path(struct btd_adapter *adapter,
+						   const char *path);
 
 const char *adapter_get_path(struct btd_adapter *adapter);
 const bdaddr_t *btd_adapter_get_address(struct btd_adapter *adapter);
-- 
2.26.2