./tools/notsd-move

1 files changed, 412 insertions, 0 deletions

diff --git a/src/grp-initprogs/systemd-vconsole-setup/vconsole-setup.c b/src/grp-initprogs/systemd-vconsole-setup/vconsole-setup.c
new file mode 100644
index 0000000000..ad6a4283fc
--- /dev/null
+++ b/src/grp-initprogs/systemd-vconsole-setup/vconsole-setup.c
@@ -0,0 +1,412 @@
+/***
+  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 <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <termios.h>
+#include <unistd.h>
+
+#include <linux/kd.h>
+#include <linux/tiocl.h>
+#include <linux/vt.h>
+
+#include "systemd-basic/alloc-util.h"
+#include "systemd-basic/fd-util.h"
+#include "systemd-basic/fileio.h"
+#include "systemd-basic/io-util.h"
+#include "systemd-basic/locale-util.h"
+#include "systemd-basic/log.h"
+#include "systemd-basic/process-util.h"
+#include "systemd-basic/signal-util.h"
+#include "systemd-basic/stdio-util.h"
+#include "systemd-basic/string-util.h"
+#include "systemd-basic/terminal-util.h"
+#include "systemd-basic/util.h"
+#include "systemd-basic/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;
+}