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-rw-r--r--src/vconsole/vconsole-setup.c279
1 files changed, 179 insertions, 100 deletions
diff --git a/src/vconsole/vconsole-setup.c b/src/vconsole/vconsole-setup.c
index 1118118450..a0ab5990fc 100644
--- a/src/vconsole/vconsole-setup.c
+++ b/src/vconsole/vconsole-setup.c
@@ -2,6 +2,7 @@
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
@@ -27,6 +28,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
+#include <termios.h>
#include <unistd.h>
#include "alloc-util.h"
@@ -50,67 +52,85 @@ static bool is_vconsole(int fd) {
return ioctl(fd, TIOCLINUX, data) >= 0;
}
-static int disable_utf8(int fd) {
- int r = 0, k;
+static bool is_allocated(unsigned int idx) {
+ char vcname[strlen("/dev/vcs") + DECIMAL_STR_MAX(int)];
- if (ioctl(fd, KDSKBMODE, K_XLATE) < 0)
- r = -errno;
-
- k = loop_write(fd, "\033%@", 3, false);
- if (k < 0)
- r = k;
+ xsprintf(vcname, "/dev/vcs%i", idx);
+ return access(vcname, F_OK) == 0;
+}
- k = write_string_file("/sys/module/vt/parameters/default_utf8", "0", 0);
- if (k < 0)
- r = k;
+static bool is_allocated_byfd(int fd) {
+ struct vt_stat vcs = {};
- if (r < 0)
- log_warning_errno(r, "Failed to disable UTF-8: %m");
+ if (ioctl(fd, VT_GETSTATE, &vcs) < 0) {
+ log_warning_errno(errno, "VT_GETSTATE failed: %m");
+ return false;
+ }
+ return is_allocated(vcs.v_active);
+}
- return r;
+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 enable_utf8(int fd) {
- int r = 0, k;
- long current = 0;
-
- if (ioctl(fd, KDGKBMODE, &current) < 0 || current == K_XLATE) {
- /*
- * Change the current keyboard to unicode, unless it
- * is currently in raw or off mode anyway. We
- * shouldn't interfere with X11's processing of the
- * key events.
- *
- * http://lists.freedesktop.org/archives/systemd-devel/2013-February/008573.html
- *
- */
-
- if (ioctl(fd, KDSKBMODE, K_UNICODE) < 0)
- r = -errno;
+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);
- k = loop_write(fd, "\033%G", 3, false);
- if (k < 0)
- r = k;
+ log_debug("UTF-8 kbdmode %sd on %s", enable_disable(utf8), name);
+ return 0;
+}
- k = write_string_file("/sys/module/vt/parameters/default_utf8", "1", 0);
- if (k < 0)
- r = k;
+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)
- log_warning_errno(r, "Failed to enable UTF-8: %m");
+ return log_warning_errno(r, "Failed to %s sysfs UTF-8 flag: %m", enable_disable(utf8));
- return r;
+ 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, r;
+ int i = 0;
pid_t pid;
/* An empty map means kernel map */
if (isempty(map))
- return 1;
+ return 0;
args[i++] = KBD_LOADKEYS;
args[i++] = "-q";
@@ -135,34 +155,31 @@ static int keyboard_load_and_wait(const char *vc, const char *map, const char *m
_exit(EXIT_FAILURE);
}
- r = wait_for_terminate_and_warn(KBD_LOADKEYS, pid, true);
- if (r < 0)
- return r;
-
- return r == 0;
+ 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, r;
+ int i = 0;
pid_t pid;
- /* An empty font means kernel font */
- if (isempty(font))
- return 1;
+ /* 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;
- args[i++] = font;
- if (map) {
+ if (!isempty(map)) {
args[i++] = "-m";
args[i++] = map;
}
- if (unimap) {
+ if (!isempty(unimap)) {
args[i++] = "-u";
args[i++] = unimap;
}
+ if (!isempty(font))
+ args[i++] = font;
args[i++] = NULL;
pid = fork();
@@ -177,11 +194,7 @@ static int font_load_and_wait(const char *vc, const char *font, const char *map,
_exit(EXIT_FAILURE);
}
- r = wait_for_terminate_and_warn(KBD_SETFONT, pid, true);
- if (r < 0)
- return r;
-
- return r == 0;
+ return wait_for_terminate_and_warn(KBD_SETFONT, pid, true);
}
/*
@@ -189,13 +202,21 @@ static int font_load_and_wait(const char *vc, const char *font, const char *map,
* 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 font_copy_to_all_vcs(int fd) {
+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 = {};
- unsigned char map8[E_TABSZ];
- unsigned short map16[E_TABSZ];
+ 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);
@@ -207,52 +228,96 @@ static void font_copy_to_all_vcs(int fd) {
/* get active, and 16 bit mask of used VT numbers */
r = ioctl(fd, VT_GETSTATE, &vcs);
if (r < 0) {
- log_debug_errno(errno, "VT_GETSTATE failed, ignoring: %m");
+ log_warning_errno(errno, "VT_GETSTATE failed, ignoring remaining consoles: %m");
return;
}
- for (i = 1; i <= 15; i++) {
- char vcname[strlen("/dev/vcs") + DECIMAL_STR_MAX(int)];
- _cleanup_close_ int vcfd = -1;
- struct console_font_op cfo = {};
+ /* 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)
+ if (i == vcs.v_active || !is_allocated(i))
continue;
- /* skip non-allocated ttys */
- xsprintf(vcname, "/dev/vcs%i", i);
- if (access(vcname, F_OK) < 0)
+ /* 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;
+ }
- xsprintf(vcname, "/dev/tty%i", i);
- vcfd = open_terminal(vcname, O_RDWR|O_CLOEXEC);
- if (vcfd < 0)
+ if (!is_settable(fd_d))
continue;
- /* copy font from active VT, where the font was uploaded to */
- cfo.op = KD_FONT_OP_COPY;
- cfo.height = vcs.v_active-1; /* tty1 == index 0 */
- (void) ioctl(vcfd, KDFONTOP, &cfo);
+ toggle_utf8(ttyname, fd_d, utf8);
- /* copy map of 8bit chars */
- if (ioctl(fd, GIO_SCRNMAP, map8) >= 0)
- (void) ioctl(vcfd, PIO_SCRNMAP, map8);
+ if (cfo.op != KD_FONT_OP_SET)
+ continue;
- /* copy map of 8bit chars -> 16bit Unicode values */
- if (ioctl(fd, GIO_UNISCRNMAP, map16) >= 0)
- (void) ioctl(vcfd, PIO_UNISCRNMAP, map16);
+ 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 } */
- unimapd.entries = unipairs;
- unimapd.entry_ct = USHRT_MAX;
- if (ioctl(fd, GIO_UNIMAP, &unimapd) >= 0) {
- struct unimapinit adv = { 0, 0, 0 };
+ 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;
+ }
- (void) ioctl(vcfd, PIO_UNIMAPCLR, &adv);
- (void) ioctl(vcfd, PIO_UNIMAP, &unimapd);
+ 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);
}
}
@@ -289,6 +354,16 @@ int main(int argc, char **argv) {
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,
@@ -306,8 +381,12 @@ int main(int argc, char **argv) {
if (detect_container() <= 0) {
r = parse_env_file("/proc/cmdline", WHITESPACE,
"vconsole.keymap", &vc_keymap,
- "vconsole.keymap.toggle", &vc_keymap_toggle,
+ "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);
@@ -316,17 +395,17 @@ int main(int argc, char **argv) {
log_warning_errno(r, "Failed to read /proc/cmdline: %m");
}
- if (utf8)
- (void) enable_utf8(fd);
- else
- (void) disable_utf8(fd);
+ 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;
- 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;
-
- /* Only copy the font when we executed setfont successfully */
- if (font_copy && font_ok)
- (void) font_copy_to_all_vcs(fd);
+ 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;
}
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