From e5e83e8362e946890ac991fc86a2c5869f9befdf Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Sat, 31 Dec 2011 19:35:52 +0100 Subject: build-sys: make readahead and vconsole optional --- src/vconsole/vconsole-setup.c | 459 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 459 insertions(+) create mode 100644 src/vconsole/vconsole-setup.c (limited to 'src/vconsole') diff --git a/src/vconsole/vconsole-setup.c b/src/vconsole/vconsole-setup.c new file mode 100644 index 0000000000..91967891f1 --- /dev/null +++ b/src/vconsole/vconsole-setup.c @@ -0,0 +1,459 @@ +/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ + +/*** + This file is part of systemd. + + Copyright 2010 Kay Sievers + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 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 + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with systemd; If not, see . +***/ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "util.h" +#include "log.h" +#include "macro.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_locale_utf8(void) { + const char *set; + + if (!setlocale(LC_ALL, "")) + return true; + + set = nl_langinfo(CODESET); + if (!set) + return true; + + return streq(set, "UTF-8"); +} + +static int disable_utf8(int fd) { + int r = 0, k; + + if (ioctl(fd, KDSKBMODE, K_XLATE) < 0) + r = -errno; + + if (loop_write(fd, "\033%@", 3, false) < 0) + r = -errno; + + if ((k = write_one_line_file("/sys/module/vt/parameters/default_utf8", "0")) < 0) + r = k; + + if (r < 0) + log_warning("Failed to disable UTF-8: %s", strerror(errno)); + + return r; +} + +static int load_keymap(const char *vc, const char *map, const char *map_toggle, bool utf8, pid_t *_pid) { + const char *args[8]; + int i = 0; + pid_t pid; + + if (isempty(map)) { + /* An empty map means kernel map */ + *_pid = 0; + 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; + + if ((pid = fork()) < 0) { + log_error("Failed to fork: %m"); + return -errno; + } else if (pid == 0) { + execv(args[0], (char **) args); + _exit(EXIT_FAILURE); + } + + *_pid = pid; + return 0; +} + +static int load_font(const char *vc, const char *font, const char *map, const char *unimap, pid_t *_pid) { + const char *args[9]; + int i = 0; + pid_t pid; + + if (isempty(font)) { + /* An empty font means kernel font */ + *_pid = 0; + return 0; + } + + args[i++] = KBD_SETFONT; + args[i++] = "-C"; + args[i++] = vc; + args[i++] = font; + if (map) { + args[i++] = "-m"; + args[i++] = map; + } + if (unimap) { + args[i++] = "-u"; + args[i++] = unimap; + } + args[i++] = NULL; + + if ((pid = fork()) < 0) { + log_error("Failed to fork: %m"); + return -errno; + } else if (pid == 0) { + execv(args[0], (char **) args); + _exit(EXIT_FAILURE); + } + + *_pid = pid; + return 0; +} + +int main(int argc, char **argv) { + const char *vc; + char *vc_keymap = NULL; + char *vc_keymap_toggle = NULL; + char *vc_font = NULL; + char *vc_font_map = NULL; + char *vc_font_unimap = NULL; +#ifdef TARGET_GENTOO + char *vc_unicode = NULL; +#endif +#if defined(TARGET_MANDRIVA) || defined(TARGET_MAGEIA) + char *vc_keytable = NULL; +#endif + int fd = -1; + bool utf8; + int r = EXIT_FAILURE; + pid_t font_pid = 0, keymap_pid = 0; + + log_set_target(LOG_TARGET_AUTO); + log_parse_environment(); + log_open(); + + umask(0022); + + if (argv[1]) + vc = argv[1]; + else + vc = "/dev/tty0"; + + if ((fd = open_terminal(vc, O_RDWR|O_CLOEXEC)) < 0) { + log_error("Failed to open %s: %m", vc); + goto finish; + } + + if (!is_vconsole(fd)) { + log_error("Device %s is not a virtual console.", vc); + goto finish; + } + + utf8 = is_locale_utf8(); + + vc_keymap = strdup("us"); + vc_font = strdup(DEFAULT_FONT); + + if (!vc_keymap || !vc_font) { + log_error("Failed to allocate strings."); + goto finish; + } + + r = 0; + + if (detect_container(NULL) <= 0) + if ((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, + NULL)) < 0) { + + if (r != -ENOENT) + log_warning("Failed to read /proc/cmdline: %s", strerror(-r)); + } + + /* Hmm, nothing set on the kernel cmd line? Then let's + * try /etc/vconsole.conf */ + if (r <= 0 && + (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)) < 0) { + + if (r != -ENOENT) + log_warning("Failed to read /etc/vconsole.conf: %s", strerror(-r)); + } + + if (r <= 0) { +#if defined(TARGET_FEDORA) || defined(TARGET_MEEGO) + if ((r = parse_env_file("/etc/sysconfig/i18n", NEWLINE, + "SYSFONT", &vc_font, + "SYSFONTACM", &vc_font_map, + "UNIMAP", &vc_font_unimap, + NULL)) < 0) { + + if (r != -ENOENT) + log_warning("Failed to read /etc/sysconfig/i18n: %s", strerror(-r)); + } + + if ((r = parse_env_file("/etc/sysconfig/keyboard", NEWLINE, + "KEYTABLE", &vc_keymap, + "KEYMAP", &vc_keymap, + NULL)) < 0) { + + if (r != -ENOENT) + log_warning("Failed to read /etc/sysconfig/i18n: %s", strerror(-r)); + } + + if (access("/etc/sysconfig/console/default.kmap", F_OK) >= 0) { + char *t; + + if (!(t = strdup("/etc/sysconfig/console/default.kmap"))) { + log_error("Out of memory."); + goto finish; + } + + free(vc_keymap); + vc_keymap = t; + } + +#elif defined(TARGET_SUSE) + if ((r = parse_env_file("/etc/sysconfig/keyboard", NEWLINE, + "KEYTABLE", &vc_keymap, + NULL)) < 0) { + + if (r != -ENOENT) + log_warning("Failed to read /etc/sysconfig/keyboard: %s", strerror(-r)); + } + + if ((r = parse_env_file("/etc/sysconfig/console", NEWLINE, + "CONSOLE_FONT", &vc_font, + "CONSOLE_SCREENMAP", &vc_font_map, + "CONSOLE_UNICODEMAP", &vc_font_unimap, + NULL)) < 0) { + + if (r != -ENOENT) + log_warning("Failed to read /etc/sysconfig/console: %s", strerror(-r)); + } + +#elif defined(TARGET_ARCH) + if ((r = parse_env_file("/etc/rc.conf", NEWLINE, + "KEYMAP", &vc_keymap, + "CONSOLEFONT", &vc_font, + "CONSOLEMAP", &vc_font_map, + NULL)) < 0) { + + if (r != -ENOENT) + log_warning("Failed to read /etc/rc.conf: %s", strerror(-r)); + } + +#elif defined(TARGET_FRUGALWARE) + if ((r = parse_env_file("/etc/sysconfig/keymap", NEWLINE, + "keymap", &vc_keymap, + NULL)) < 0) { + if (r != -ENOENT) + log_warning("Failed to read /etc/sysconfig/keymap: %s", strerror(-r)); + } + if ((r = parse_env_file("/etc/sysconfig/font", NEWLINE, + "font", &vc_font, + NULL)) < 0) { + if (r != -ENOENT) + log_warning("Failed to read /etc/sysconfig/font: %s", strerror(-r)); + } + +#elif defined(TARGET_ALTLINUX) + if ((r = parse_env_file("/etc/sysconfig/keyboard", NEWLINE, + "KEYTABLE", &vc_keymap, + NULL)) < 0) { + + if (r != -ENOENT) + log_warning("Failed to read /etc/sysconfig/keyboard: %s", strerror(-r)); + } + + if ((r = parse_env_file("/etc/sysconfig/consolefont", NEWLINE, + "SYSFONT", &vc_font, + NULL)) < 0) { + + if (r != -ENOENT) + log_warning("Failed to read /etc/sysconfig/console: %s", strerror(-r)); + } + +#elif defined(TARGET_GENTOO) + if ((r = parse_env_file("/etc/rc.conf", NEWLINE, + "unicode", &vc_unicode, + NULL)) < 0) { + if (r != -ENOENT) + log_warning("Failed to read /etc/rc.conf: %s", strerror(-r)); + } + + if (vc_unicode) { + int rc_unicode; + + if ((rc_unicode = parse_boolean(vc_unicode)) < 0) + log_error("Unknown value for /etc/rc.conf unicode=%s", vc_unicode); + else { + if (rc_unicode && !utf8) + log_warning("/etc/rc.conf wants unicode, but current locale is not UTF-8 capable!"); + else if (!rc_unicode && utf8) { + log_debug("/etc/rc.conf does not want unicode, leave it on in kernel but does not apply to vconsole."); + utf8 = false; + } + } + } + + /* /etc/conf.d/consolefont comments and gentoo + * documentation mention uppercase, but the actual + * contents are lowercase. the existing + * /etc/init.d/consolefont tries both + */ + if ((r = parse_env_file("/etc/conf.d/consolefont", NEWLINE, + "CONSOLEFONT", &vc_font, + "consolefont", &vc_font, + "consoletranslation", &vc_font_map, + "CONSOLETRANSLATION", &vc_font_map, + "unicodemap", &vc_font_unimap, + "UNICODEMAP", &vc_font_unimap, + NULL)) < 0) { + if (r != -ENOENT) + log_warning("Failed to read /etc/conf.d/consolefont: %s", strerror(-r)); + } + + if ((r = parse_env_file("/etc/conf.d/keymaps", NEWLINE, + "keymap", &vc_keymap, + "KEYMAP", &vc_keymap, + NULL)) < 0) { + if (r != -ENOENT) + log_warning("Failed to read /etc/conf.d/keymaps: %s", strerror(-r)); + } + +#elif defined(TARGET_MANDRIVA) || defined (TARGET_MAGEIA) + + if ((r = parse_env_file("/etc/sysconfig/i18n", NEWLINE, + "SYSFONT", &vc_font, + "SYSFONTACM", &vc_font_map, + "UNIMAP", &vc_font_unimap, + NULL)) < 0) { + + if (r != -ENOENT) + log_warning("Failed to read /etc/sysconfig/i18n: %s", strerror(-r)); + } + + if ((r = parse_env_file("/etc/sysconfig/keyboard", NEWLINE, + "KEYTABLE", &vc_keytable, + "KEYMAP", &vc_keymap, + "UNIKEYTABLE", &vc_keymap, + "GRP_TOGGLE", &vc_keymap_toggle, + NULL)) < 0) { + + if (r != -ENOENT) + log_warning("Failed to read /etc/sysconfig/i18n: %s", strerror(-r)); + } + + if (vc_keytable) { + if (vc_keymap) + free(vc_keymap); + if (utf8) { + if (endswith(vc_keytable, ".uni") || strstr(vc_keytable, ".uni.")) + vc_keymap = strdup(vc_keytable); + else { + char *s; + if ((s = strstr(vc_keytable, ".map"))) + vc_keytable[s-vc_keytable+1] = '\0'; + vc_keymap = strappend(vc_keytable, ".uni"); + } + } else + vc_keymap = strdup(vc_keytable); + + free(vc_keytable); + + if (!vc_keymap) { + log_error("Out of memory."); + goto finish; + } + } + + if (access("/etc/sysconfig/console/default.kmap", F_OK) >= 0) { + char *t; + + if (!(t = strdup("/etc/sysconfig/console/default.kmap"))) { + log_error("Out of memory."); + goto finish; + } + + free(vc_keymap); + vc_keymap = t; + } +#endif + } + + r = EXIT_FAILURE; + + if (!utf8) + disable_utf8(fd); + + if (load_keymap(vc, vc_keymap, vc_keymap_toggle, utf8, &keymap_pid) >= 0 && + load_font(vc, vc_font, vc_font_map, vc_font_unimap, &font_pid) >= 0) + r = EXIT_SUCCESS; + +finish: + if (keymap_pid > 0) + wait_for_terminate_and_warn(KBD_LOADKEYS, keymap_pid); + + if (font_pid > 0) + wait_for_terminate_and_warn(KBD_SETFONT, font_pid); + + free(vc_keymap); + free(vc_font); + free(vc_font_map); + free(vc_font_unimap); + + if (fd >= 0) + close_nointr_nofail(fd); + + return r; +} -- cgit v1.2.3-54-g00ecf