Add ratbag_get_name to retrieve the name of the device

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>

# Conflicts:
#	src/libratbag-private.h
#	src/libratbag.c

src/libratbag-private.h

@@ -40,6 +40,7 @@
 struct ratbag_driver;
 
 struct ratbag {
+	char *name;
 	int evdev_fd;
 	int refcount;
 	struct ratbag_driver *driver;

src/libratbag.c

@@ -127,6 +127,7 @@ ratbag_new_from_fd(struct libratbag *libratbag, int fd)
 	struct input_id ids;
 	struct ratbag *ratbag = NULL;
 	struct ratbag_driver *driver;
+	char buf[256];
 
 	if (!libratbag) {
 		fprintf(stderr, "libratbag is NULL\n");
@@ -141,6 +142,18 @@ ratbag_new_from_fd(struct libratbag *libratbag, int fd)
 	if (rc < 0)
 		goto out_err;
 
+	memset(buf, 0, sizeof(buf));
+	rc = ioctl(fd, EVIOCGNAME(sizeof(buf) - 1), buf);
+	if (rc < 0)
+		goto out_err;
+
+	free(ratbag->name);
+	ratbag->name = strdup(buf);
+	if (!ratbag->name) {
+		errno = ENOMEM;
+		goto out_err;
+	}
+
 	ratbag_device_init(ratbag, fd);
 
 	driver = ratbag_find_driver(libratbag, &ids);
@@ -154,6 +167,8 @@ ratbag_new_from_fd(struct libratbag *libratbag, int fd)
 	return ratbag;
 
 out_err:
+	if (ratbag)
+		free(ratbag->name);
 	free(ratbag);
 	return NULL;
 }
@@ -169,10 +184,17 @@ ratbag_unref(struct ratbag *ratbag)
 	if (ratbag->refcount > 0)
 		return ratbag;
 
+	free(ratbag->name);
 	free(ratbag);
 	return NULL;
 }
 
+LIBRATBAG_EXPORT const char *
+ratbag_get_name(const struct ratbag* ratbag)
+{
+	return ratbag->name;
+}
+
 static void
 ratbag_register_driver(struct libratbag *libratbag, struct ratbag_driver *driver)
 {

src/libratbag.h

@@ -175,6 +175,15 @@ libratbag_unref(struct libratbag *libratbag);
 struct ratbag*
 ratbag_new_from_fd(struct libratbag *libratbag, int fd);
 
+/**
+ * @ingroup base
+ *
+ * @param ratbag A previously initialized ratbag context
+ * @return The name of the device associated with the given ratbag.
+ */
+const char *
+ratbag_get_name(const struct ratbag* ratbag);
+
 /**
  * @ingroup device
  */

src/libratbag.sym

@@ -5,6 +5,7 @@ global:
 	libratbag_create_context;
 	libratbag_ref;
 	libratbag_unref;
+	ratbag_get_name;
 	ratbag_new_from_fd;
 	ratbag_unref;
 local: