seat: Rework seat activation/switch logic

The seat activation logic did not correctly handle VT switching and
switching between multiple sessions.

Session switching on VT-bound seats is now performed using a VT switch,
taking advantage of VT signals to perform the actual switch. This
simplifies switching logic and makes it more robust.

1 files changed, 1 insertions, 12 deletions

diff --git a/seatd/client.c b/seatd/client.c
index 31a3fd5..fcb238d 100644
--- a/seatd/client.c
+++ b/seatd/client.c
@@ -66,6 +66,7 @@ struct client *client_create(struct server *server, int client_fd) {
 	client->uid = uid;
 	client->gid = gid;
 	client->pid = pid;
+	client->session = -1;
 	client->server = server;
 	client->connection.fd = client_fd;
 	linked_list_init(&client->devices);
@@ -453,15 +454,3 @@ fail:
 	client_destroy(client);
 	return -1;
 }
-
-int client_get_session(const struct client *client) {
-	if (client->seat == NULL || client->seat->active_client != client) {
-		return -1;
-	}
-	if (client->seat->vt_bound) {
-		return client->seat_vt;
-	}
-	// TODO: Store some session sequence
-	errno = ENOSYS;
-	return -1;
-}