diff options
Diffstat (limited to 'xwayland')
| -rw-r--r-- | xwayland/xwayland.c | 134 |
1 files changed, 95 insertions, 39 deletions
diff --git a/xwayland/xwayland.c b/xwayland/xwayland.c index f27de679..fd5309ad 100644 --- a/xwayland/xwayland.c +++ b/xwayland/xwayland.c @@ -128,7 +128,7 @@ static void exec_xwayland(struct wlr_xwayland *wlr_xwayland) { execvp("Xwayland", argv); } -static void xwayland_finish(struct wlr_xwayland *wlr_xwayland) { +static void xwayland_finish_server(struct wlr_xwayland *wlr_xwayland) { if (!wlr_xwayland || wlr_xwayland->display == -1) { return; } @@ -147,27 +147,33 @@ static void xwayland_finish(struct wlr_xwayland *wlr_xwayland) { wl_event_source_remove(wlr_xwayland->sigusr1_source); } - safe_close(wlr_xwayland->x_fd[0]); - safe_close(wlr_xwayland->x_fd[1]); safe_close(wlr_xwayland->wl_fd[0]); safe_close(wlr_xwayland->wl_fd[1]); safe_close(wlr_xwayland->wm_fd[0]); safe_close(wlr_xwayland->wm_fd[1]); + /* We do not kill the Xwayland process, it dies to broken pipe + * after we close our side of the wm/wl fds. This is more reliable + * than trying to kill something that might no longer be Xwayland. + */ +} + +static void xwayland_finish_display(struct wlr_xwayland *wlr_xwayland) { + safe_close(wlr_xwayland->x_fd[0]); + safe_close(wlr_xwayland->x_fd[1]); wl_list_remove(&wlr_xwayland->display_destroy.link); unlink_display_sockets(wlr_xwayland->display); wlr_xwayland->display = -1; unsetenv("DISPLAY"); - /* We do not kill the Xwayland process, it dies to broken pipe - * after we close our side of the wm/wl fds. This is more reliable - * than trying to kill something that might no longer be Xwayland. - */ } -static bool xwayland_start(struct wlr_xwayland *wlr_xwayland, +static bool xwayland_start_display(struct wlr_xwayland *wlr_xwayland, struct wl_display *wl_display, struct wlr_compositor *compositor); +static bool xwayland_start_server(struct wlr_xwayland *wlr_xwayland); +static bool xwayland_start_server_lazy(struct wlr_xwayland *wlr_xwayland); + static void handle_client_destroy(struct wl_listener *listener, void *data) { struct wlr_xwayland *wlr_xwayland = wl_container_of(listener, wlr_xwayland, client_destroy); @@ -176,12 +182,13 @@ static void handle_client_destroy(struct wl_listener *listener, void *data) { wlr_xwayland->client = NULL; wl_list_remove(&wlr_xwayland->client_destroy.link); - xwayland_finish(wlr_xwayland); + xwayland_finish_server(wlr_xwayland); - if (time(NULL) - wlr_xwayland->server_start > 5) { + if (wlr_xwayland->lazy) { + xwayland_start_server_lazy(wlr_xwayland); + } else if (time(NULL) - wlr_xwayland->server_start > 5) { wlr_log(L_INFO, "Restarting Xwayland"); - xwayland_start(wlr_xwayland, wlr_xwayland->wl_display, - wlr_xwayland->compositor); + xwayland_start_server(wlr_xwayland); } } @@ -217,7 +224,7 @@ static int xserver_handle_ready(int signal_number, void *data) { wlr_xwayland->xwm = xwm_create(wlr_xwayland); if (!wlr_xwayland->xwm) { - xwayland_finish(wlr_xwayland); + xwayland_finish_server(wlr_xwayland); return 1; } @@ -236,9 +243,6 @@ static int xserver_handle_ready(int signal_number, void *data) { wlr_xwayland->cursor = NULL; } - char display_name[16]; - snprintf(display_name, sizeof(display_name), ":%d", wlr_xwayland->display); - setenv("DISPLAY", display_name, true); wlr_signal_emit_safe(&wlr_xwayland->events.ready, wlr_xwayland); /* ready is a one-shot signal, fire and forget */ @@ -247,48 +251,62 @@ static int xserver_handle_ready(int signal_number, void *data) { return 1; /* wayland event loop dispatcher's count */ } -static bool xwayland_start(struct wlr_xwayland *wlr_xwayland, +static int xwayland_socket_connected(int fd, uint32_t mask, void* data){ + struct wlr_xwayland *wlr_xwayland = data; + + wl_event_source_remove(wlr_xwayland->x_fd_read_event[0]); + wl_event_source_remove(wlr_xwayland->x_fd_read_event[1]); + + xwayland_start_server(wlr_xwayland); + + return 0; +} + +static bool xwayland_start_display(struct wlr_xwayland *wlr_xwayland, struct wl_display *wl_display, struct wlr_compositor *compositor) { - memset(wlr_xwayland, 0, offsetof(struct wlr_xwayland, seat)); - wlr_xwayland->wl_display = wl_display; - wlr_xwayland->compositor = compositor; wlr_xwayland->x_fd[0] = wlr_xwayland->x_fd[1] = -1; - wlr_xwayland->wl_fd[0] = wlr_xwayland->wl_fd[1] = -1; - wlr_xwayland->wm_fd[0] = wlr_xwayland->wm_fd[1] = -1; wlr_xwayland->display_destroy.notify = handle_display_destroy; wl_display_add_destroy_listener(wl_display, &wlr_xwayland->display_destroy); wlr_xwayland->display = open_display_sockets(wlr_xwayland->x_fd); if (wlr_xwayland->display < 0) { - xwayland_finish(wlr_xwayland); + xwayland_finish_display(wlr_xwayland); return false; } + + char display_name[16]; + snprintf(display_name, sizeof(display_name), ":%d", wlr_xwayland->display); + setenv("DISPLAY", display_name, true); + + return true; +} + +static bool xwayland_start_server(struct wlr_xwayland *wlr_xwayland) { + wlr_xwayland->wl_fd[0] = wlr_xwayland->wl_fd[1] = -1; + wlr_xwayland->wm_fd[0] = wlr_xwayland->wm_fd[1] = -1; + if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, wlr_xwayland->wl_fd) != 0 || socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, wlr_xwayland->wm_fd) != 0) { wlr_log_errno(L_ERROR, "failed to create socketpair"); - xwayland_finish(wlr_xwayland); + xwayland_finish_server(wlr_xwayland); return false; } - wlr_xwayland->server_start = time(NULL); - if (!(wlr_xwayland->client = wl_client_create(wl_display, wlr_xwayland->wl_fd[0]))) { + if (!(wlr_xwayland->client = wl_client_create(wlr_xwayland->wl_display, wlr_xwayland->wl_fd[0]))) { wlr_log_errno(L_ERROR, "wl_client_create failed"); - xwayland_finish(wlr_xwayland); + xwayland_finish_server(wlr_xwayland); return false; } - // unset $DISPLAY while XWayland starts - unsetenv("DISPLAY"); - wlr_xwayland->wl_fd[0] = -1; /* not ours anymore */ wlr_xwayland->client_destroy.notify = handle_client_destroy; wl_client_add_destroy_listener(wlr_xwayland->client, &wlr_xwayland->client_destroy); - struct wl_event_loop *loop = wl_display_get_event_loop(wl_display); + struct wl_event_loop *loop = wl_display_get_event_loop(wlr_xwayland->wl_display); wlr_xwayland->sigusr1_source = wl_event_loop_add_signal(loop, SIGUSR1, xserver_handle_ready, wlr_xwayland); @@ -323,36 +341,74 @@ static bool xwayland_start(struct wlr_xwayland *wlr_xwayland, } if (wlr_xwayland->pid < 0) { wlr_log_errno(L_ERROR, "fork failed"); - xwayland_finish(wlr_xwayland); + xwayland_finish_server(wlr_xwayland); return false; } /* close child fds */ - close(wlr_xwayland->x_fd[0]); - close(wlr_xwayland->x_fd[1]); + /* remain managing x sockets for lazy start */ close(wlr_xwayland->wl_fd[1]); close(wlr_xwayland->wm_fd[1]); - wlr_xwayland->x_fd[0] = wlr_xwayland->x_fd[1] = -1; wlr_xwayland->wl_fd[1] = wlr_xwayland->wm_fd[1] = -1; return true; } +static bool xwayland_start_server_lazy(struct wlr_xwayland *wlr_xwayland) { + struct wl_event_loop *loop = wl_display_get_event_loop(wlr_xwayland->wl_display); + wlr_xwayland->x_fd_read_event[0] = + wl_event_loop_add_fd(loop, wlr_xwayland->x_fd[0], WL_EVENT_READABLE, + xwayland_socket_connected, wlr_xwayland); + wlr_xwayland->x_fd_read_event[1] = + wl_event_loop_add_fd(loop, wlr_xwayland->x_fd[1], WL_EVENT_READABLE, + xwayland_socket_connected, wlr_xwayland); + + return true; +} + void wlr_xwayland_destroy(struct wlr_xwayland *wlr_xwayland) { wlr_xwayland_set_seat(wlr_xwayland, NULL); - xwayland_finish(wlr_xwayland); + xwayland_finish_server(wlr_xwayland); + xwayland_finish_display(wlr_xwayland); free(wlr_xwayland); } struct wlr_xwayland *wlr_xwayland_create(struct wl_display *wl_display, - struct wlr_compositor *compositor) { + struct wlr_compositor *compositor, bool lazy) { struct wlr_xwayland *wlr_xwayland = calloc(1, sizeof(struct wlr_xwayland)); + memset(wlr_xwayland, 0, offsetof(struct wlr_xwayland, seat)); + + wlr_xwayland->wl_display = wl_display; + wlr_xwayland->compositor = compositor; + wlr_xwayland->lazy = lazy; + + wlr_xwayland->x_fd[0] = wlr_xwayland->x_fd[1] = -1; + wlr_xwayland->wl_fd[0] = wlr_xwayland->wl_fd[1] = -1; + wlr_xwayland->wm_fd[0] = wlr_xwayland->wm_fd[1] = -1; wl_signal_init(&wlr_xwayland->events.new_surface); wl_signal_init(&wlr_xwayland->events.ready); - if (xwayland_start(wlr_xwayland, wl_display, compositor)) { - return wlr_xwayland; + + if (!xwayland_start_display(wlr_xwayland, wl_display, compositor)) { + goto error_alloc; + } + + if (wlr_xwayland->lazy) { + if (!xwayland_start_server_lazy(wlr_xwayland)) { + goto error_display; + } + } else { + if (!xwayland_start_server(wlr_xwayland)) { + goto error_display; + } } + + return wlr_xwayland; + +error_display: + xwayland_finish_display(wlr_xwayland); + +error_alloc: free(wlr_xwayland); return NULL; } |