+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2011 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <string.h>
-#include <unistd.h>
-
-#include <libudev.h>
-
-#include "util.h"
-#include "mkdir.h"
-
-int main(int argc, char *argv[]) {
-
- struct udev *udev = NULL;
- struct udev_enumerate *enumerator = NULL;
- struct udev_list_entry *first, *item;
- int i;
- const char *seat = NULL;
- char **new_argv;
- char *path = NULL, *device_node = NULL;
- int r;
- FILE *f = NULL;
-
- /* This binary will go away as soon as X natively supports
- * display enumeration with udev in a way that covers both PCI
- * and USB. */
-
- /* This will simply determine the fb device id of the graphics
- * device assigned to a seat and write a configuration file
- * from it and then spawn the real X server. */
-
- /* If this file is removed, don't forget to remove the code
- * that invokes this in gdm and other display managers. */
-
- for (i = 1; i < argc; i++)
- if (streq(argv[i], "-seat"))
- seat = argv[i+1];
-
- if (isempty(seat) || streq(seat, "seat0")) {
- argv[0] = (char*) X_SERVER;
- execv(X_SERVER, argv);
- log_error("Failed to execute real X server: %m");
- goto fail;
- }
-
- udev = udev_new();
- if (!udev) {
- log_error("Failed to allocate udev environment.");
- goto fail;
- }
-
- enumerator = udev_enumerate_new(udev);
- if (!enumerator) {
- log_error("Failed to allocate udev enumerator.");
- goto fail;
- }
-
- udev_enumerate_add_match_subsystem(enumerator, "graphics");
- udev_enumerate_add_match_tag(enumerator, seat);
-
- r = udev_enumerate_scan_devices(enumerator);
- if (r < 0) {
- log_error("Failed to enumerate devices.");
- goto fail;
- }
-
- first = udev_enumerate_get_list_entry(enumerator);
- udev_list_entry_foreach(item, first) {
- struct udev_device *d;
- const char *dn;
-
- d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item));
- if (!d)
- continue;
-
- dn = udev_device_get_devnode(d);
-
- if (dn) {
- device_node = strdup(dn);
- if (!device_node) {
- udev_device_unref(d);
- log_oom();
- goto fail;
- }
- }
-
- udev_device_unref(d);
-
- if (device_node)
- break;
- }
-
- if (!device_node) {
- log_error("Failed to find device node for seat %s.", seat);
- goto fail;
- }
-
- r = mkdir_safe_label("/run/systemd/multi-session-x", 0755, 0, 0);
- if (r < 0) {
- log_error("Failed to create directory: %s", strerror(-r));
- goto fail;
- }
-
- path = strappend("/run/systemd/multi-session-x/", seat);
- if (!path) {
- log_oom();
- goto fail;
- }
-
- f = fopen(path, "we");
- if (!f) {
- log_error("Failed to write configuration file: %m");
- goto fail;
- }
-
- fprintf(f,
- "Section \"Device\"\n"
- " Identifier \"udev\"\n"
- " Driver \"fbdev\"\n"
- " Option \"fbdev\" \"%s\"\n"
- "EndSection\n"
- "Section \"ServerFlags\"\n"
- " Option \"AutoAddDevices\" \"True\"\n"
- " Option \"AllowEmptyInput\" \"True\"\n"
- " Option \"DontVTSwitch\" \"True\"\n"
- "EndSection\n"
- "Section \"InputClass\"\n"
- " Identifier \"Force Input Devices to Seat\"\n"
- " Option \"GrabDevice\" \"True\"\n"
- "EndSection\n",
- device_node);
-
- fflush(f);
-
- if (ferror(f)) {
- log_error("Failed to write configuration file: %m");
- goto fail;
- }
-
- fclose(f);
- f = NULL;
-
- new_argv = alloca(sizeof(char*) * (argc + 3 + 1));
- memcpy(new_argv, argv, sizeof(char*) * (argc + 2 + 1));
-
- new_argv[0] = (char*) X_SERVER;
- new_argv[argc+0] = (char*) "-config";
- new_argv[argc+1] = path;
- new_argv[argc+2] = (char*) "-sharevts";
- new_argv[argc+3] = NULL;
-
- udev_enumerate_unref(enumerator);
- enumerator = NULL;
-
- udev_unref(udev);
- udev = NULL;
-
- free(device_node);
- device_node = NULL;
-
- execv(X_SERVER, new_argv);
- log_error("Failed to execute real X server: %m");
-
-fail:
- if (enumerator)
- udev_enumerate_unref(enumerator);
-
- if (udev)
- udev_unref(udev);
-
- free(path);
- free(device_node);
-
- if (f)
- fclose(f);
-
- return EXIT_FAILURE;
-}
~ianmdlvl / elogind.git / commitdiff