349 lines
12 KiB
C
349 lines
12 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2010 Kay Sievers
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include <stdbool.h>
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#include <stdarg.h>
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#include <limits.h>
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#include <locale.h>
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#include <langinfo.h>
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#include <sys/ioctl.h>
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#include <sys/wait.h>
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#include <linux/tiocl.h>
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#include <linux/kd.h>
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#include "util.h"
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#include "log.h"
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#include "macro.h"
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static bool is_vconsole(int fd) {
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unsigned char data[1];
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data[0] = TIOCL_GETFGCONSOLE;
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return ioctl(fd, TIOCLINUX, data) >= 0;
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}
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static bool is_locale_utf8(void) {
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const char *set;
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if (!setlocale(LC_ALL, ""))
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return true;
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set = nl_langinfo(CODESET);
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if (!set)
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return true;
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return streq(set, "UTF-8");
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}
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static int disable_utf8(int fd) {
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int r = 0, k;
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if (ioctl(fd, KDSKBMODE, K_XLATE) < 0)
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r = -errno;
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if (loop_write(fd, "\033%@", 3, false) < 0)
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r = -errno;
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if ((k = write_one_line_file("/sys/module/vt/parameters/default_utf8", "0")) < 0)
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r = k;
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if (r < 0)
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log_warning("Failed to disable UTF-8: %s", strerror(errno));
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return r;
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}
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static int load_keymap(const char *vc, const char *map, bool utf8, pid_t *_pid) {
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const char *args[7];
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int i = 0;
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pid_t pid;
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args[i++] = KBD_LOADKEYS;
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args[i++] = "-q";
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args[i++] = "-C";
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args[i++] = vc;
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if (utf8)
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args[i++] = "-u";
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args[i++] = map;
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args[i++] = NULL;
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if ((pid = fork()) < 0) {
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log_error("Failed to fork: %m");
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return -errno;
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} else if (pid == 0) {
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execv(args[0], (char **) args);
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_exit(EXIT_FAILURE);
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}
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*_pid = pid;
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return 0;
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}
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static int load_font(const char *vc, const char *font, const char *map, const char *unimap, pid_t *_pid) {
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const char *args[9];
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int i = 0;
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pid_t pid;
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args[i++] = KBD_SETFONT;
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args[i++] = "-C";
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args[i++] = vc;
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args[i++] = font;
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if (map && map[0] != '\0') {
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args[i++] = "-m";
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args[i++] = map;
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}
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if (unimap && unimap[0] != '\0') {
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args[i++] = "-u";
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args[i++] = unimap;
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}
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args[i++] = NULL;
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if ((pid = fork()) < 0) {
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log_error("Failed to fork: %m");
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return -errno;
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} else if (pid == 0) {
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execv(args[0], (char **) args);
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_exit(EXIT_FAILURE);
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}
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*_pid = pid;
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return 0;
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}
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int main(int argc, char **argv) {
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const char *vc;
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char *vc_keymap = NULL;
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char *vc_font = NULL;
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char *vc_font_map = NULL;
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char *vc_font_unimap = NULL;
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#ifdef TARGET_GENTOO
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char *vc_unicode = NULL;
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#endif
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int fd = -1;
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bool utf8;
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int r = EXIT_FAILURE;
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pid_t font_pid = 0, keymap_pid = 0;
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log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
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log_parse_environment();
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log_open();
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if (argv[1])
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vc = argv[1];
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else
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vc = "/dev/tty0";
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if ((fd = open(vc, O_RDWR|O_CLOEXEC)) < 0) {
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log_error("Failed to open %s: %m", vc);
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goto finish;
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}
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if (!is_vconsole(fd)) {
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log_error("Device %s is not a virtual console.", vc);
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goto finish;
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}
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utf8 = is_locale_utf8();
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if ((r = parse_env_file("/proc/cmdline", WHITESPACE,
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#ifdef TARGET_FEDORA
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"SYSFONT", &vc_font,
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"KEYTABLE", &vc_keymap,
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#endif
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"vconsole.keymap", &vc_keymap,
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"vconsole.font", &vc_font,
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"vconsole.font.map", &vc_font_map,
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"vconsole.font.unimap", &vc_font_unimap,
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NULL)) < 0) {
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if (r != -ENOENT)
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log_warning("Failed to read /proc/cmdline: %s", strerror(-r));
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}
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/* Hmm, nothing set on the kernel cmd line? Then let's
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* try /etc/vconsole.conf */
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if (r <= 0 &&
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(r = parse_env_file("/etc/vconsole.conf", NEWLINE,
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"KEYMAP", &vc_keymap,
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"FONT", &vc_font,
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"FONT_MAP", &vc_font_map,
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"FONT_UNIMAP", &vc_font_unimap,
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NULL)) < 0) {
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if (r != -ENOENT)
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log_warning("Failed to read /etc/vconsole.conf: %s", strerror(-r));
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}
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if (r <= 0) {
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#ifdef TARGET_FEDORA
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if ((r = parse_env_file("/etc/sysconfig/i18n", NEWLINE,
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"SYSFONT", &vc_font,
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"SYSFONTACM", &vc_font_map,
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"UNIMAP", &vc_font_unimap,
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NULL)) < 0) {
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if (r != -ENOENT)
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log_warning("Failed to read /etc/sysconfig/i18n: %s", strerror(-r));
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}
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if ((r = parse_env_file("/etc/sysconfig/keyboard", NEWLINE,
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"KEYTABLE", &vc_keymap,
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"KEYMAP", &vc_keymap,
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NULL)) < 0) {
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if (r != -ENOENT)
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log_warning("Failed to read /etc/sysconfig/i18n: %s", strerror(-r));
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}
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if (access("/etc/sysconfig/console/default.kmap", F_OK) >= 0) {
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char *t;
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if (!(t = strdup("/etc/sysconfig/console/default.kmap"))) {
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log_error("Out of memory.");
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goto finish;
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}
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free(vc_keymap);
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vc_keymap = t;
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}
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#elif defined(TARGET_SUSE)
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if ((r = parse_env_file("/etc/sysconfig/keyboard", NEWLINE,
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"KEYTABLE", &vc_keymap,
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NULL)) < 0) {
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if (r != -ENOENT)
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log_warning("Failed to read /etc/sysconfig/keyboard: %s", strerror(-r));
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}
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if ((r = parse_env_file("/etc/sysconfig/console", NEWLINE,
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"CONSOLE_FONT", &vc_font,
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"CONSOLE_SCREENMAP", &vc_font_map,
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"CONSOLE_UNICODEMAP", &vc_font_unimap,
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NULL)) < 0) {
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if (r != -ENOENT)
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log_warning("Failed to read /etc/sysconfig/console: %s", strerror(-r));
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}
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#elif defined(TARGET_ARCH)
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if ((r = parse_env_file("/etc/rc.conf", NEWLINE,
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"KEYMAP", &vc_keymap,
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"CONSOLEFONT", &vc_font,
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"CONSOLEMAP", &vc_font_map,
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NULL)) < 0) {
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if (r != -ENOENT)
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log_warning("Failed to read /etc/rc.conf: %s", strerror(-r));
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}
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#elif defined(TARGET_GENTOO)
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if ((r = parse_env_file("/etc/rc.conf", NEWLINE,
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"unicode", &vc_unicode,
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NULL)) < 0) {
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if (r != -ENOENT)
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log_warning("Failed to read /etc/rc.conf: %s", strerror(-r));
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}
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if (vc_unicode) {
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int rc_unicode;
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if ((rc_unicode = parse_boolean(vc_unicode)) < 0)
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log_error("Unknown value for /etc/rc.conf unicode=%s", vc_unicode);
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else {
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if (rc_unicode && !utf8)
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log_warning("/etc/rc.conf wants unicode, but current locale is not UTF-8 capable!");
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else if (!rc_unicode && utf8) {
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log_debug("/etc/rc.conf does not want unicode, leave it on in kernel but does not apply to vconsole.");
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utf8 = false;
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}
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}
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}
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/* /etc/conf.d/consolefont comments and gentoo
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* documentation mention uppercase, but the actual
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* contents are lowercase. the existing
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* /etc/init.d/consolefont tries both
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*/
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if ((r = parse_env_file("/etc/conf.d/consolefont", NEWLINE,
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"CONSOLEFONT", &vc_font,
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"consolefont", &vc_font,
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"consoletranslation", &vc_font_map,
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"CONSOLETRANSLATION", &vc_font_map,
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"unicodemap", &vc_font_unimap,
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"UNICODEMAP", &vc_font_unimap,
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NULL)) < 0) {
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if (r != -ENOENT)
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log_warning("Failed to read /etc/conf.d/consolefont: %s", strerror(-r));
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}
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if ((r = parse_env_file("/etc/conf.d/keymaps", NEWLINE,
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"keymap", &vc_keymap,
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"KEYMAP", &vc_keymap,
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NULL)) < 0) {
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if (r != -ENOENT)
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log_warning("Failed to read /etc/conf.d/keymaps: %s", strerror(-r));
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}
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#endif
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}
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if (!vc_keymap)
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vc_keymap = strdup("us");
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if (!vc_font)
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vc_font = strdup(DEFAULT_FONT);
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if (!vc_keymap || !vc_font) {
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log_error("Failed to allocate strings.");
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goto finish;
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}
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if (!utf8)
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disable_utf8(fd);
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if (load_keymap(vc, vc_keymap, utf8, &keymap_pid) >= 0 &&
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load_font(vc, vc_font, vc_font_map, vc_font_unimap, &font_pid) >= 0)
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r = EXIT_SUCCESS;
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finish:
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if (keymap_pid > 0)
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wait_for_terminate_and_warn(KBD_LOADKEYS, keymap_pid);
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if (font_pid > 0)
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wait_for_terminate_and_warn(KBD_SETFONT, font_pid);
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free(vc_keymap);
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free(vc_font);
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free(vc_font_map);
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free(vc_font_unimap);
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if (fd >= 0)
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close_nointr_nofail(fd);
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return r;
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}
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