1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Kay Sievers
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
32 #include <sys/ioctl.h>
34 #include <linux/tiocl.h>
44 static bool is_vconsole(int fd) {
45 unsigned char data[1];
47 data[0] = TIOCL_GETFGCONSOLE;
48 return ioctl(fd, TIOCLINUX, data) >= 0;
51 static int disable_utf8(int fd) {
54 if (ioctl(fd, KDSKBMODE, K_XLATE) < 0)
57 if (loop_write(fd, "\033%@", 3, false) < 0)
60 k = write_string_file("/sys/module/vt/parameters/default_utf8", "0");
65 log_warning("Failed to disable UTF-8: %s", strerror(-r));
70 static int enable_utf8(int fd) {
74 if (ioctl(fd, KDGKBMODE, ¤t) < 0 || current == K_XLATE) {
76 * Change the current keyboard to unicode, unless it
77 * is currently in raw or off mode anyway. We
78 * shouldn't interfere with X11's processing of the
81 * http://lists.freedesktop.org/archives/systemd-devel/2013-February/008573.html
85 if (ioctl(fd, KDSKBMODE, K_UNICODE) < 0)
89 if (loop_write(fd, "\033%G", 3, false) < 0)
92 k = write_string_file("/sys/module/vt/parameters/default_utf8", "1");
97 log_warning("Failed to enable UTF-8: %s", strerror(-r));
102 static int keymap_load(const char *vc, const char *map, const char *map_toggle, bool utf8, pid_t *_pid) {
108 /* An empty map means kernel map */
113 args[i++] = KBD_LOADKEYS;
121 args[i++] = map_toggle;
126 log_error("Failed to fork: %m");
128 } else if (pid == 0) {
129 execv(args[0], (char **) args);
137 static int font_load(const char *vc, const char *font, const char *map, const char *unimap, pid_t *_pid) {
143 /* An empty font means kernel font */
148 args[i++] = KBD_SETFONT;
164 log_error("Failed to fork: %m");
166 } else if (pid == 0) {
167 execv(args[0], (char **) args);
176 * A newly allocated VT uses the font from the active VT. Here
177 * we update all possibly already allocated VTs with the configured
178 * font. It also allows to restart systemd-vconsole-setup.service,
179 * to apply a new font to all VTs.
181 static void font_copy_to_all_vcs(int fd) {
182 struct vt_stat vcs = {};
185 /* get active, and 16 bit mask of used VT numbers */
186 r = ioctl(fd, VT_GETSTATE, &vcs);
190 for (i = 1; i <= 15; i++) {
192 int _cleanup_close_ vcfd = -1;
193 struct console_font_op cfo = {};
195 if (i == vcs.v_active)
198 /* skip non-allocated ttys */
199 snprintf(vcname, sizeof(vcname), "/dev/vcs%i", i);
200 if (access(vcname, F_OK) < 0)
203 snprintf(vcname, sizeof(vcname), "/dev/tty%i", i);
204 vcfd = open_terminal(vcname, O_RDWR|O_CLOEXEC);
208 /* copy font from active VT, where the font was uploaded to */
209 cfo.op = KD_FONT_OP_COPY;
210 cfo.height = vcs.v_active-1; /* tty1 == index 0 */
211 ioctl(vcfd, KDFONTOP, &cfo);
215 int main(int argc, char **argv) {
217 char *vc_keymap = NULL;
218 char *vc_keymap_toggle = NULL;
219 char *vc_font = NULL;
220 char *vc_font_map = NULL;
221 char *vc_font_unimap = NULL;
224 pid_t font_pid = 0, keymap_pid = 0;
225 bool font_copy = false;
226 int r = EXIT_FAILURE;
228 log_set_target(LOG_TARGET_AUTO);
229 log_parse_environment();
241 fd = open_terminal(vc, O_RDWR|O_CLOEXEC);
243 log_error("Failed to open %s: %m", vc);
247 if (!is_vconsole(fd)) {
248 log_error("Device %s is not a virtual console.", vc);
252 utf8 = is_locale_utf8();
254 r = parse_env_file("/etc/vconsole.conf", NEWLINE,
255 "KEYMAP", &vc_keymap,
256 "KEYMAP_TOGGLE", &vc_keymap_toggle,
258 "FONT_MAP", &vc_font_map,
259 "FONT_UNIMAP", &vc_font_unimap,
262 if (r < 0 && r != -ENOENT)
263 log_warning("Failed to read /etc/vconsole.conf: %s", strerror(-r));
265 /* Let the kernel command line override /etc/vconsole.conf */
266 if (detect_container(NULL) <= 0) {
267 r = parse_env_file("/proc/cmdline", WHITESPACE,
268 "vconsole.keymap", &vc_keymap,
269 "vconsole.keymap.toggle", &vc_keymap_toggle,
270 "vconsole.font", &vc_font,
271 "vconsole.font.map", &vc_font_map,
272 "vconsole.font.unimap", &vc_font_unimap,
275 if (r < 0 && r != -ENOENT)
276 log_warning("Failed to read /proc/cmdline: %s", strerror(-r));
285 if (keymap_load(vc, vc_keymap, vc_keymap_toggle, utf8, &keymap_pid) >= 0 &&
286 font_load(vc, vc_font, vc_font_map, vc_font_unimap, &font_pid) >= 0)
291 wait_for_terminate_and_warn(KBD_LOADKEYS, keymap_pid);
294 wait_for_terminate_and_warn(KBD_SETFONT, font_pid);
296 font_copy_to_all_vcs(fd);
302 free(vc_font_unimap);
305 close_nointr_nofail(fd);