summaryrefslogtreecommitdiff
path: root/src/vconsole/vconsole-setup.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/vconsole/vconsole-setup.c')
-rw-r--r--src/vconsole/vconsole-setup.c411
1 files changed, 0 insertions, 411 deletions
diff --git a/src/vconsole/vconsole-setup.c b/src/vconsole/vconsole-setup.c
deleted file mode 100644
index a0ab5990fc..0000000000
--- a/src/vconsole/vconsole-setup.c
+++ /dev/null
@@ -1,411 +0,0 @@
-/***
- This file is part of systemd.
-
- Copyright 2010 Kay Sievers
- Copyright 2016 Michal Soltys <soltys@ziu.info>
-
- 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 <errno.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <linux/kd.h>
-#include <linux/tiocl.h>
-#include <linux/vt.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/ioctl.h>
-#include <termios.h>
-#include <unistd.h>
-
-#include "alloc-util.h"
-#include "fd-util.h"
-#include "fileio.h"
-#include "io-util.h"
-#include "locale-util.h"
-#include "log.h"
-#include "process-util.h"
-#include "signal-util.h"
-#include "stdio-util.h"
-#include "string-util.h"
-#include "terminal-util.h"
-#include "util.h"
-#include "virt.h"
-
-static bool is_vconsole(int fd) {
- unsigned char data[1];
-
- data[0] = TIOCL_GETFGCONSOLE;
- return ioctl(fd, TIOCLINUX, data) >= 0;
-}
-
-static bool is_allocated(unsigned int idx) {
- char vcname[strlen("/dev/vcs") + DECIMAL_STR_MAX(int)];
-
- xsprintf(vcname, "/dev/vcs%i", idx);
- return access(vcname, F_OK) == 0;
-}
-
-static bool is_allocated_byfd(int fd) {
- struct vt_stat vcs = {};
-
- if (ioctl(fd, VT_GETSTATE, &vcs) < 0) {
- log_warning_errno(errno, "VT_GETSTATE failed: %m");
- return false;
- }
- return is_allocated(vcs.v_active);
-}
-
-static bool is_settable(int fd) {
- int r, curr_mode;
-
- r = ioctl(fd, KDGKBMODE, &curr_mode);
- /*
- * Make sure we only adjust consoles in K_XLATE or K_UNICODE mode.
- * Otherwise we would (likely) interfere with X11's processing of the
- * key events.
- *
- * http://lists.freedesktop.org/archives/systemd-devel/2013-February/008573.html
- */
- return r == 0 && IN_SET(curr_mode, K_XLATE, K_UNICODE);
-}
-
-static int toggle_utf8(const char *name, int fd, bool utf8) {
- int r;
- struct termios tc = {};
-
- assert(name);
-
- r = ioctl(fd, KDSKBMODE, utf8 ? K_UNICODE : K_XLATE);
- if (r < 0)
- return log_warning_errno(errno, "Failed to %s UTF-8 kbdmode on %s: %m", enable_disable(utf8), name);
-
- r = loop_write(fd, utf8 ? "\033%G" : "\033%@", 3, false);
- if (r < 0)
- return log_warning_errno(r, "Failed to %s UTF-8 term processing on %s: %m", enable_disable(utf8), name);
-
- r = tcgetattr(fd, &tc);
- if (r >= 0) {
- if (utf8)
- tc.c_iflag |= IUTF8;
- else
- tc.c_iflag &= ~IUTF8;
- r = tcsetattr(fd, TCSANOW, &tc);
- }
- if (r < 0)
- return log_warning_errno(errno, "Failed to %s iutf8 flag on %s: %m", enable_disable(utf8), name);
-
- log_debug("UTF-8 kbdmode %sd on %s", enable_disable(utf8), name);
- return 0;
-}
-
-static int toggle_utf8_sysfs(bool utf8) {
- int r;
-
- r = write_string_file("/sys/module/vt/parameters/default_utf8", one_zero(utf8), 0);
- if (r < 0)
- return log_warning_errno(r, "Failed to %s sysfs UTF-8 flag: %m", enable_disable(utf8));
-
- log_debug("Sysfs UTF-8 flag %sd", enable_disable(utf8));
- return 0;
-}
-
-static int keyboard_load_and_wait(const char *vc, const char *map, const char *map_toggle, bool utf8) {
- const char *args[8];
- int i = 0;
- pid_t pid;
-
- /* An empty map means kernel map */
- if (isempty(map))
- return 0;
-
- args[i++] = KBD_LOADKEYS;
- args[i++] = "-q";
- args[i++] = "-C";
- args[i++] = vc;
- if (utf8)
- args[i++] = "-u";
- args[i++] = map;
- if (map_toggle)
- args[i++] = map_toggle;
- args[i++] = NULL;
-
- pid = fork();
- if (pid < 0)
- return log_error_errno(errno, "Failed to fork: %m");
- else if (pid == 0) {
-
- (void) reset_all_signal_handlers();
- (void) reset_signal_mask();
-
- execv(args[0], (char **) args);
- _exit(EXIT_FAILURE);
- }
-
- return wait_for_terminate_and_warn(KBD_LOADKEYS, pid, true);
-}
-
-static int font_load_and_wait(const char *vc, const char *font, const char *map, const char *unimap) {
- const char *args[9];
- int i = 0;
- pid_t pid;
-
- /* Any part can be set independently */
- if (isempty(font) && isempty(map) && isempty(unimap))
- return 0;
-
- args[i++] = KBD_SETFONT;
- args[i++] = "-C";
- args[i++] = vc;
- if (!isempty(map)) {
- args[i++] = "-m";
- args[i++] = map;
- }
- if (!isempty(unimap)) {
- args[i++] = "-u";
- args[i++] = unimap;
- }
- if (!isempty(font))
- args[i++] = font;
- args[i++] = NULL;
-
- pid = fork();
- if (pid < 0)
- return log_error_errno(errno, "Failed to fork: %m");
- else if (pid == 0) {
-
- (void) reset_all_signal_handlers();
- (void) reset_signal_mask();
-
- execv(args[0], (char **) args);
- _exit(EXIT_FAILURE);
- }
-
- return wait_for_terminate_and_warn(KBD_SETFONT, pid, true);
-}
-
-/*
- * A newly allocated VT uses the font from the active VT. Here
- * we update all possibly already allocated VTs with the configured
- * font. It also allows to restart systemd-vconsole-setup.service,
- * to apply a new font to all VTs.
- *
- * We also setup per-console utf8 related stuff: kbdmode, term
- * processing, stty iutf8.
- */
-static void setup_remaining_vcs(int fd, bool utf8) {
- struct console_font_op cfo = {
- .op = KD_FONT_OP_GET,
- .width = UINT_MAX, .height = UINT_MAX,
- .charcount = UINT_MAX,
- };
- struct vt_stat vcs = {};
- struct unimapinit adv = {};
- struct unimapdesc unimapd;
- _cleanup_free_ struct unipair* unipairs = NULL;
- _cleanup_free_ void *fontbuf = NULL;
- int i, r;
-
- unipairs = new(struct unipair, USHRT_MAX);
- if (!unipairs) {
- log_oom();
- return;
- }
-
- /* get active, and 16 bit mask of used VT numbers */
- r = ioctl(fd, VT_GETSTATE, &vcs);
- if (r < 0) {
- log_warning_errno(errno, "VT_GETSTATE failed, ignoring remaining consoles: %m");
- return;
- }
-
- /* get metadata of the current font (width, height, count) */
- r = ioctl(fd, KDFONTOP, &cfo);
- if (r < 0)
- log_warning_errno(errno, "KD_FONT_OP_GET failed while trying to get the font metadata: %m");
- else {
- /* verify parameter sanity first */
- if (cfo.width > 32 || cfo.height > 32 || cfo.charcount > 512)
- log_warning("Invalid font metadata - width: %u (max 32), height: %u (max 32), count: %u (max 512)",
- cfo.width, cfo.height, cfo.charcount);
- else {
- /*
- * Console fonts supported by the kernel are limited in size to 32 x 32 and maximum 512
- * characters. Thus with 1 bit per pixel it requires up to 65536 bytes. The height always
- * requries 32 per glyph, regardless of the actual height - see the comment above #define
- * max_font_size 65536 in drivers/tty/vt/vt.c for more details.
- */
- fontbuf = malloc((cfo.width + 7) / 8 * 32 * cfo.charcount);
- if (!fontbuf) {
- log_oom();
- return;
- }
- /* get fonts from source console */
- cfo.data = fontbuf;
- r = ioctl(fd, KDFONTOP, &cfo);
- if (r < 0)
- log_warning_errno(errno, "KD_FONT_OP_GET failed while trying to read the font data: %m");
- else {
- unimapd.entries = unipairs;
- unimapd.entry_ct = USHRT_MAX;
- r = ioctl(fd, GIO_UNIMAP, &unimapd);
- if (r < 0)
- log_warning_errno(errno, "GIO_UNIMAP failed while trying to read unicode mappings: %m");
- else
- cfo.op = KD_FONT_OP_SET;
- }
- }
- }
-
- if (cfo.op != KD_FONT_OP_SET)
- log_warning("Fonts will not be copied to remaining consoles");
-
- for (i = 1; i <= 63; i++) {
- char ttyname[strlen("/dev/tty") + DECIMAL_STR_MAX(int)];
- _cleanup_close_ int fd_d = -1;
-
- if (i == vcs.v_active || !is_allocated(i))
- continue;
-
- /* try to open terminal */
- xsprintf(ttyname, "/dev/tty%i", i);
- fd_d = open_terminal(ttyname, O_RDWR|O_CLOEXEC);
- if (fd_d < 0) {
- log_warning_errno(fd_d, "Unable to open tty%i, fonts will not be copied: %m", i);
- continue;
- }
-
- if (!is_settable(fd_d))
- continue;
-
- toggle_utf8(ttyname, fd_d, utf8);
-
- if (cfo.op != KD_FONT_OP_SET)
- continue;
-
- r = ioctl(fd_d, KDFONTOP, &cfo);
- if (r < 0) {
- log_warning_errno(errno, "KD_FONT_OP_SET failed, fonts will not be copied to tty%i: %m", i);
- continue;
- }
-
- /* copy unicode translation table */
- /* unimapd is a ushort count and a pointer to an
- array of struct unipair { ushort, ushort } */
- r = ioctl(fd_d, PIO_UNIMAPCLR, &adv);
- if (r < 0) {
- log_warning_errno(errno, "PIO_UNIMAPCLR failed, unimaps might be incorrect for tty%i: %m", i);
- continue;
- }
-
- r = ioctl(fd_d, PIO_UNIMAP, &unimapd);
- if (r < 0) {
- log_warning_errno(errno, "PIO_UNIMAP failed, unimaps might be incorrect for tty%i: %m", i);
- continue;
- }
-
- log_debug("Font and unimap successfully copied to %s", ttyname);
- }
-}
-
-int main(int argc, char **argv) {
- const char *vc;
- _cleanup_free_ char
- *vc_keymap = NULL, *vc_keymap_toggle = NULL,
- *vc_font = NULL, *vc_font_map = NULL, *vc_font_unimap = NULL;
- _cleanup_close_ int fd = -1;
- bool utf8, font_copy = false, font_ok, keyboard_ok;
- int r = EXIT_FAILURE;
-
- log_set_target(LOG_TARGET_AUTO);
- log_parse_environment();
- log_open();
-
- umask(0022);
-
- if (argv[1])
- vc = argv[1];
- else {
- vc = "/dev/tty0";
- font_copy = true;
- }
-
- fd = open_terminal(vc, O_RDWR|O_CLOEXEC);
- if (fd < 0) {
- log_error_errno(fd, "Failed to open %s: %m", vc);
- return EXIT_FAILURE;
- }
-
- if (!is_vconsole(fd)) {
- log_error("Device %s is not a virtual console.", vc);
- return EXIT_FAILURE;
- }
-
- if (!is_allocated_byfd(fd)) {
- log_error("Virtual console %s is not allocated.", vc);
- return EXIT_FAILURE;
- }
-
- if (!is_settable(fd)) {
- log_error("Virtual console %s is not in K_XLATE or K_UNICODE.", vc);
- return EXIT_FAILURE;
- }
-
- utf8 = is_locale_utf8();
-
- r = parse_env_file("/etc/vconsole.conf", NEWLINE,
- "KEYMAP", &vc_keymap,
- "KEYMAP_TOGGLE", &vc_keymap_toggle,
- "FONT", &vc_font,
- "FONT_MAP", &vc_font_map,
- "FONT_UNIMAP", &vc_font_unimap,
- NULL);
-
- if (r < 0 && r != -ENOENT)
- log_warning_errno(r, "Failed to read /etc/vconsole.conf: %m");
-
- /* Let the kernel command line override /etc/vconsole.conf */
- if (detect_container() <= 0) {
- r = parse_env_file("/proc/cmdline", WHITESPACE,
- "vconsole.keymap", &vc_keymap,
- "vconsole.keymap_toggle", &vc_keymap_toggle,
- "vconsole.font", &vc_font,
- "vconsole.font_map", &vc_font_map,
- "vconsole.font_unimap", &vc_font_unimap,
- /* compatibility with obsolete multiple-dot scheme */
- "vconsole.keymap.toggle", &vc_keymap_toggle,
- "vconsole.font.map", &vc_font_map,
- "vconsole.font.unimap", &vc_font_unimap,
- NULL);
-
- if (r < 0 && r != -ENOENT)
- log_warning_errno(r, "Failed to read /proc/cmdline: %m");
- }
-
- toggle_utf8_sysfs(utf8);
- toggle_utf8(vc, fd, utf8);
- font_ok = font_load_and_wait(vc, vc_font, vc_font_map, vc_font_unimap) == 0;
- keyboard_ok = keyboard_load_and_wait(vc, vc_keymap, vc_keymap_toggle, utf8) == 0;
-
- if (font_copy) {
- if (font_ok)
- setup_remaining_vcs(fd, utf8);
- else
- log_warning("Setting source virtual console failed, ignoring remaining ones");
- }
-
- return font_ok && keyboard_ok ? EXIT_SUCCESS : EXIT_FAILURE;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-01 14:23:50 +0000