--- /dev/null
+/*
+ * Copyright © 2011 Intel Corporation
+ * Copyright © 2016 Giulio Camuffo
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "config.h"
+#include "ivi-compositor.h"
+
+#include <signal.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/socket.h>
+
+#include <libweston/libweston.h>
+#include <weston.h>
+#include <libweston/xwayland-api.h>
+#include "shared/helpers.h"
+
+struct wet_xwayland {
+ struct ivi_compositor *ivi_compositor;
+ const struct weston_xwayland_api *api;
+ struct weston_xwayland *xwayland;
+ struct wl_event_source *sigusr1_source;
+ struct wl_client *client;
+ int wm_fd;
+ struct weston_process process;
+};
+
+static int
+handle_sigusr1(int signal_number, void *data)
+{
+ struct wet_xwayland *wxw = data;
+
+ /* We'd be safer if we actually had the struct
+ * signalfd_siginfo from the signalfd data and could verify
+ * this came from Xwayland.*/
+ wxw->api->xserver_loaded(wxw->xwayland, wxw->client, wxw->wm_fd);
+ wl_event_source_remove(wxw->sigusr1_source);
+
+ return 1;
+}
+
+static pid_t
+spawn_xserver(void *user_data, const char *display, int abstract_fd, int unix_fd)
+{
+ struct wet_xwayland *wxw = user_data;
+ pid_t pid;
+ char s[12], abstract_fd_str[12], unix_fd_str[12], wm_fd_str[12];
+ int sv[2], wm[2], fd;
+ char *xserver = NULL;
+ struct weston_config *config = wxw->ivi_compositor->config;
+ struct weston_config_section *section;
+
+ if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, sv) < 0) {
+ weston_log("wl connection socketpair failed\n");
+ return 1;
+ }
+
+ if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, wm) < 0) {
+ weston_log("X wm connection socketpair failed\n");
+ return 1;
+ }
+
+ pid = fork();
+ switch (pid) {
+ case 0:
+ /* SOCK_CLOEXEC closes both ends, so we need to unset
+ * the flag on the client fd. */
+ fd = dup(sv[1]);
+ if (fd < 0)
+ goto fail;
+ snprintf(s, sizeof s, "%d", fd);
+ setenv("WAYLAND_SOCKET", s, 1);
+
+ fd = dup(abstract_fd);
+ if (fd < 0)
+ goto fail;
+ snprintf(abstract_fd_str, sizeof abstract_fd_str, "%d", fd);
+ fd = dup(unix_fd);
+ if (fd < 0)
+ goto fail;
+ snprintf(unix_fd_str, sizeof unix_fd_str, "%d", fd);
+ fd = dup(wm[1]);
+ if (fd < 0)
+ goto fail;
+ snprintf(wm_fd_str, sizeof wm_fd_str, "%d", fd);
+
+ section = weston_config_get_section(config,
+ "xwayland", NULL, NULL);
+ weston_config_section_get_string(section, "path",
+ &xserver, XSERVER_PATH);
+
+ /* Ignore SIGUSR1 in the child, which will make the X
+ * server send SIGUSR1 to the parent (weston) when
+ * it's done with initialization. During
+ * initialization the X server will round trip and
+ * block on the wayland compositor, so avoid making
+ * blocking requests (like xcb_connect_to_fd) until
+ * it's done with that. */
+ signal(SIGUSR1, SIG_IGN);
+
+ if (execl(xserver,
+ xserver,
+ display,
+ "-rootless",
+#ifdef HAVE_XWAYLAND_LISTENFD
+ "-listenfd", abstract_fd_str,
+ "-listenfd", unix_fd_str,
+#else
+ "-listen", abstract_fd_str,
+ "-listen", unix_fd_str,
+#endif
+ "-wm", wm_fd_str,
+ "-terminate",
+ NULL) < 0)
+ weston_log("exec of '%s %s -rootless "
+#ifdef HAVE_XWAYLAND_LISTENFD
+ "-listenfd %s -listenfd %s "
+#else
+ "-listen %s -listen %s "
+#endif
+ "-wm %s -terminate' failed: %s\n",
+ xserver, display,
+ abstract_fd_str, unix_fd_str, wm_fd_str,
+ strerror(errno));
+ fail:
+ _exit(EXIT_FAILURE);
+
+ default:
+ close(sv[1]);
+ wxw->client = wl_client_create(wxw->ivi_compositor->compositor->wl_display, sv[0]);
+
+ close(wm[1]);
+ wxw->wm_fd = wm[0];
+
+ wxw->process.pid = pid;
+ wl_list_insert(&wxw->ivi_compositor->child_process_list,
+ &wxw->process.link);
+ break;
+
+ case -1:
+ weston_log("Failed to fork to spawn xserver process\n");
+ break;
+ }
+
+ return pid;
+}
+
+static void
+xserver_cleanup(struct weston_process *process, int status)
+{
+ struct wet_xwayland *wxw =
+ container_of(process, struct wet_xwayland, process);
+ struct wl_event_loop *loop =
+ wl_display_get_event_loop(wxw->ivi_compositor->compositor->wl_display);
+
+ wxw->api->xserver_exited(wxw->xwayland, status);
+ wxw->sigusr1_source = wl_event_loop_add_signal(loop, SIGUSR1,
+ handle_sigusr1, wxw);
+ wxw->client = NULL;
+}
+
+int
+wet_load_xwayland(struct weston_compositor *comp)
+{
+ const struct weston_xwayland_api *api;
+ struct weston_xwayland *xwayland;
+ struct wet_xwayland *wxw;
+ struct wl_event_loop *loop;
+ struct ivi_compositor *ivi = to_ivi_compositor(comp);
+
+ if (weston_compositor_load_xwayland(comp) < 0)
+ return -1;
+
+ api = weston_xwayland_get_api(comp);
+ if (!api) {
+ weston_log("Failed to get the xwayland module API.\n");
+ return -1;
+ }
+
+ xwayland = api->get(comp);
+ if (!xwayland) {
+ weston_log("Failed to get the xwayland object.\n");
+ return -1;
+ }
+
+ wxw = zalloc(sizeof *wxw);
+ if (!wxw)
+ return -1;
+
+ wxw->ivi_compositor = ivi;
+ wxw->api = api;
+ wxw->xwayland = xwayland;
+ wxw->process.cleanup = xserver_cleanup;
+ if (api->listen(xwayland, wxw, spawn_xserver) < 0)
+ return -1;
+
+ loop = wl_display_get_event_loop(comp->wl_display);
+ wxw->sigusr1_source = wl_event_loop_add_signal(loop, SIGUSR1,
+ handle_sigusr1, wxw);
+
+ return 0;
+}
Code Review / src / agl-compositor.git / blobdiff