backend/session: Remove session_impl

libseat provides all session functionality, so there is no longer need
for a session backend abstraction. The libseat device ID, seat handle
and event loop handle are moved to the main wlr_session and wlr_device
structs.

1 files changed, 0 insertions, 218 deletions

diff --git a/backend/session/libseat.c b/backend/session/libseat.c
deleted file mode 100644
index 52862d82..00000000
--- a/backend/session/libseat.c
+++ /dev/null
@@ -1,218 +0,0 @@
-#define _POSIX_C_SOURCE 200809L
-#include <assert.h>
-#include <errno.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <wayland-server-core.h>
-#include <wlr/backend/session/interface.h>
-#include <wlr/config.h>
-#include <wlr/util/log.h>
-#include "backend/session/session.h"
-#include "util/signal.h"
-
-#include <libseat.h>
-
-const struct session_impl session_libseat;
-
-struct libseat_device {
-	struct wl_list link;
-	int fd;
-	int device_id;
-};
-
-struct libseat_session {
-	struct wlr_session base;
-
-	struct libseat *seat;
-	struct wl_event_source *event;
-	struct wl_list devices;
-};
-
-static void handle_enable_seat(struct libseat *seat, void *data) {
-	struct libseat_session *session = data;
-	session->base.active = true;
-	wlr_signal_emit_safe(&session->base.events.active, NULL);
-}
-
-static void handle_disable_seat(struct libseat *seat, void *data) {
-	struct libseat_session *session = data;
-	session->base.active = false;
-	wlr_signal_emit_safe(&session->base.events.active, NULL);
-	libseat_disable_seat(session->seat);
-}
-
-static int libseat_event(int fd, uint32_t mask, void *data) {
-	struct libseat *seat = data;
-	libseat_dispatch(seat, 0);
-	return 1;
-}
-
-static struct libseat_seat_listener seat_listener = {
-	.enable_seat = handle_enable_seat,
-	.disable_seat = handle_disable_seat,
-};
-
-static struct libseat_session *libseat_session_from_session(
-		struct wlr_session *base) {
-	assert(base->impl == &session_libseat);
-	return (struct libseat_session *)base;
-}
-
-static enum wlr_log_importance libseat_log_level_to_wlr(
-		enum libseat_log_level level) {
-	switch (level) {
-	case LIBSEAT_LOG_LEVEL_ERROR:
-		return WLR_ERROR;
-	case LIBSEAT_LOG_LEVEL_INFO:
-		return WLR_INFO;
-	default:
-		return WLR_DEBUG;
-	}
-}
-
-static void log_libseat(enum libseat_log_level level,
-		const char *fmt, va_list args) {
-	enum wlr_log_importance importance = libseat_log_level_to_wlr(level);
-
-	static char wlr_fmt[1024];
-	snprintf(wlr_fmt, sizeof(wlr_fmt), "[libseat] %s", fmt);
-
-	_wlr_vlog(importance, wlr_fmt, args);
-}
-
-static struct wlr_session *libseat_session_create(struct wl_display *disp) {
-	struct libseat_session *session = calloc(1, sizeof(*session));
-	if (!session) {
-		wlr_log_errno(WLR_ERROR, "Allocation failed");
-		return NULL;
-	}
-
-	session_init(&session->base);
-	wl_list_init(&session->devices);
-
-	libseat_set_log_handler(log_libseat);
-	libseat_set_log_level(LIBSEAT_LOG_LEVEL_INFO);
-
-	// libseat will take care of updating the logind state if necessary
-	setenv("XDG_SESSION_TYPE", "wayland", 1);
-
-	session->seat = libseat_open_seat(&seat_listener, session);
-	if (session->seat == NULL) {
-		wlr_log_errno(WLR_ERROR, "Unable to create seat");
-		goto error;
-	}
-
-	const char *seat_name = libseat_seat_name(session->seat);
-	if (seat_name == NULL) {
-		wlr_log_errno(WLR_ERROR, "Unable to get seat info");
-		goto error;
-	}
-	snprintf(session->base.seat, sizeof(session->base.seat), "%s", seat_name);
-
-	struct wl_event_loop *event_loop = wl_display_get_event_loop(disp);
-	session->event = wl_event_loop_add_fd(event_loop, libseat_get_fd(session->seat),
-		WL_EVENT_READABLE, libseat_event, session->seat);
-	if (session->event == NULL) {
-		wlr_log(WLR_ERROR, "Failed to create libseat event source");
-		goto error;
-	}
-
-	// We may have received enable_seat immediately after the open_seat result,
-	// so, dispatch once without timeout to speed up activation.
-	if (libseat_dispatch(session->seat, 0) == -1) {
-		wlr_log_errno(WLR_ERROR, "libseat dispatch failed");
-		goto error;
-	}
-
-	wlr_log(WLR_INFO, "Successfully loaded libseat session");
-	session->base.impl = &session_libseat;
-	return &session->base;
-
-error:
-	if (session->seat != NULL) {
-		libseat_close_seat(session->seat);
-	}
-	if (session->event != NULL) {
-		wl_event_source_remove(session->event);
-	}
-	free(session);
-	return NULL;
-}
-
-static void libseat_session_destroy(struct wlr_session *base) {
-	struct libseat_session *session = libseat_session_from_session(base);
-
-	libseat_close_seat(session->seat);
-	wl_event_source_remove(session->event);
-	free(session);
-}
-
-static struct libseat_device *find_device_by_fd(struct libseat_session *session, int fd) {
-	struct libseat_device *dev;
-	wl_list_for_each(dev, &session->devices, link) {
-		if (dev->fd == fd) {
-			return dev;
-		}
-	}
-	return NULL;
-}
-
-static int libseat_session_open_device(struct wlr_session *base, const char *path) {
-	struct libseat_session *session = libseat_session_from_session(base);
-
-	int fd;
-	int device_id = libseat_open_device(session->seat, path, &fd);
-	if (device_id == -1) {
-		wlr_log_errno(WLR_ERROR, "Failed to open device '%s'", path);
-		return -1;
-	}
-
-	struct libseat_device *dev = calloc(1, sizeof(struct libseat_device));
-	if (dev == NULL) {
-		wlr_log_errno(WLR_ERROR, "Allocation failed");
-		libseat_close_device(session->seat, device_id);
-		return -1;
-	}
-
-	dev->fd = fd;
-	dev->device_id = device_id;
-	wl_list_insert(&session->devices, &dev->link);
-
-	return fd;
-}
-
-static void libseat_session_close_device(struct wlr_session *base, int fd) {
-	struct libseat_session *session = libseat_session_from_session(base);
-
-	struct libseat_device *dev = find_device_by_fd(session, fd);
-	if (dev == NULL) {
-		wlr_log(WLR_ERROR, "No device with fd %d found", fd);
-		close(fd);
-		return;
-	}
-
-	if (libseat_close_device(session->seat, dev->device_id) == -1) {
-		wlr_log_errno(WLR_ERROR, "Failed to close device %d", dev->device_id);
-	}
-
-	wl_list_remove(&dev->link);
-	free(dev);
-	close(fd);
-}
-
-static bool libseat_change_vt(struct wlr_session *base, unsigned vt) {
-	struct libseat_session *session = libseat_session_from_session(base);
-	return libseat_switch_session(session->seat, vt) == 0;
-}
-
-const struct session_impl session_libseat = {
-	.create = libseat_session_create,
-	.destroy = libseat_session_destroy,
-	.open = libseat_session_open_device,
-	.close = libseat_session_close_device,
-	.change_vt = libseat_change_vt,
-};