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97c4a07d LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Kay Sievers | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
97c4a07d LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
97c4a07d | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
97c4a07d LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
97c4a07d | 22 | #include <errno.h> |
97c4a07d | 23 | #include <fcntl.h> |
97c4a07d | 24 | #include <limits.h> |
97c4a07d | 25 | #include <linux/kd.h> |
07630cea | 26 | #include <linux/tiocl.h> |
dd04aac9 | 27 | #include <linux/vt.h> |
07630cea LP |
28 | #include <stdbool.h> |
29 | #include <stdio.h> | |
30 | #include <stdlib.h> | |
31 | #include <sys/ioctl.h> | |
32 | #include <unistd.h> | |
97c4a07d | 33 | |
3ffd4af2 | 34 | #include "fd-util.h" |
a5c32cff | 35 | #include "fileio.h" |
c004493c | 36 | #include "io-util.h" |
07630cea | 37 | #include "log.h" |
0b452006 | 38 | #include "process-util.h" |
ce30c8dc | 39 | #include "signal-util.h" |
07630cea LP |
40 | #include "string-util.h" |
41 | #include "terminal-util.h" | |
42 | #include "util.h" | |
43 | #include "virt.h" | |
97c4a07d | 44 | |
653ab83b | 45 | static bool is_vconsole(int fd) { |
97c4a07d LP |
46 | unsigned char data[1]; |
47 | ||
48 | data[0] = TIOCL_GETFGCONSOLE; | |
49 | return ioctl(fd, TIOCLINUX, data) >= 0; | |
97c4a07d LP |
50 | } |
51 | ||
52 | static int disable_utf8(int fd) { | |
53 | int r = 0, k; | |
54 | ||
55 | if (ioctl(fd, KDSKBMODE, K_XLATE) < 0) | |
56 | r = -errno; | |
57 | ||
553acb7b ZJS |
58 | k = loop_write(fd, "\033%@", 3, false); |
59 | if (k < 0) | |
60 | r = k; | |
97c4a07d | 61 | |
ad118bda | 62 | k = write_string_file("/sys/module/vt/parameters/default_utf8", "0", 0); |
741f8cf6 | 63 | if (k < 0) |
97c4a07d LP |
64 | r = k; |
65 | ||
66 | if (r < 0) | |
da927ba9 | 67 | log_warning_errno(r, "Failed to disable UTF-8: %m"); |
97c4a07d LP |
68 | |
69 | return r; | |
70 | } | |
71 | ||
d305a67b TG |
72 | static int enable_utf8(int fd) { |
73 | int r = 0, k; | |
a25d4d0e LP |
74 | long current = 0; |
75 | ||
76 | if (ioctl(fd, KDGKBMODE, ¤t) < 0 || current == K_XLATE) { | |
77 | /* | |
78 | * Change the current keyboard to unicode, unless it | |
79 | * is currently in raw or off mode anyway. We | |
80 | * shouldn't interfere with X11's processing of the | |
81 | * key events. | |
82 | * | |
83 | * http://lists.freedesktop.org/archives/systemd-devel/2013-February/008573.html | |
84 | * | |
85 | */ | |
86 | ||
87 | if (ioctl(fd, KDSKBMODE, K_UNICODE) < 0) | |
88 | r = -errno; | |
89 | } | |
d305a67b | 90 | |
553acb7b ZJS |
91 | k = loop_write(fd, "\033%G", 3, false); |
92 | if (k < 0) | |
93 | r = k; | |
d305a67b | 94 | |
ad118bda | 95 | k = write_string_file("/sys/module/vt/parameters/default_utf8", "1", 0); |
d305a67b TG |
96 | if (k < 0) |
97 | r = k; | |
98 | ||
99 | if (r < 0) | |
da927ba9 | 100 | log_warning_errno(r, "Failed to enable UTF-8: %m"); |
d305a67b TG |
101 | |
102 | return r; | |
103 | } | |
104 | ||
aecb6fcb | 105 | static int keyboard_load_and_wait(const char *vc, const char *map, const char *map_toggle, bool utf8) { |
5b396b06 | 106 | const char *args[8]; |
aecb6fcb | 107 | int i = 0, r; |
97c4a07d LP |
108 | pid_t pid; |
109 | ||
8931278c LDM |
110 | /* An empty map means kernel map */ |
111 | if (isempty(map)) | |
aecb6fcb | 112 | return 1; |
944d4c91 | 113 | |
9841e8e3 | 114 | args[i++] = KBD_LOADKEYS; |
97c4a07d LP |
115 | args[i++] = "-q"; |
116 | args[i++] = "-C"; | |
117 | args[i++] = vc; | |
118 | if (utf8) | |
119 | args[i++] = "-u"; | |
120 | args[i++] = map; | |
5b396b06 AB |
121 | if (map_toggle) |
122 | args[i++] = map_toggle; | |
97c4a07d LP |
123 | args[i++] = NULL; |
124 | ||
741f8cf6 | 125 | pid = fork(); |
aecb6fcb LP |
126 | if (pid < 0) |
127 | return log_error_errno(errno, "Failed to fork: %m"); | |
128 | else if (pid == 0) { | |
ce30c8dc LP |
129 | |
130 | (void) reset_all_signal_handlers(); | |
131 | (void) reset_signal_mask(); | |
132 | ||
97c4a07d LP |
133 | execv(args[0], (char **) args); |
134 | _exit(EXIT_FAILURE); | |
135 | } | |
136 | ||
aecb6fcb LP |
137 | r = wait_for_terminate_and_warn(KBD_LOADKEYS, pid, true); |
138 | if (r < 0) | |
139 | return r; | |
140 | ||
141 | return r == 0; | |
97c4a07d LP |
142 | } |
143 | ||
aecb6fcb | 144 | static int font_load_and_wait(const char *vc, const char *font, const char *map, const char *unimap) { |
97c4a07d | 145 | const char *args[9]; |
aecb6fcb | 146 | int i = 0, r; |
97c4a07d LP |
147 | pid_t pid; |
148 | ||
8931278c LDM |
149 | /* An empty font means kernel font */ |
150 | if (isempty(font)) | |
aecb6fcb | 151 | return 1; |
944d4c91 | 152 | |
9841e8e3 | 153 | args[i++] = KBD_SETFONT; |
97c4a07d LP |
154 | args[i++] = "-C"; |
155 | args[i++] = vc; | |
156 | args[i++] = font; | |
dd36de4d | 157 | if (map) { |
97c4a07d LP |
158 | args[i++] = "-m"; |
159 | args[i++] = map; | |
160 | } | |
dd36de4d | 161 | if (unimap) { |
97c4a07d LP |
162 | args[i++] = "-u"; |
163 | args[i++] = unimap; | |
164 | } | |
165 | args[i++] = NULL; | |
166 | ||
741f8cf6 | 167 | pid = fork(); |
aecb6fcb LP |
168 | if (pid < 0) |
169 | return log_error_errno(errno, "Failed to fork: %m"); | |
170 | else if (pid == 0) { | |
ce30c8dc LP |
171 | |
172 | (void) reset_all_signal_handlers(); | |
173 | (void) reset_signal_mask(); | |
174 | ||
97c4a07d LP |
175 | execv(args[0], (char **) args); |
176 | _exit(EXIT_FAILURE); | |
177 | } | |
178 | ||
aecb6fcb LP |
179 | r = wait_for_terminate_and_warn(KBD_SETFONT, pid, true); |
180 | if (r < 0) | |
181 | return r; | |
182 | ||
183 | return r == 0; | |
97c4a07d LP |
184 | } |
185 | ||
d3b37e84 KS |
186 | /* |
187 | * A newly allocated VT uses the font from the active VT. Here | |
188 | * we update all possibly already allocated VTs with the configured | |
189 | * font. It also allows to restart systemd-vconsole-setup.service, | |
190 | * to apply a new font to all VTs. | |
191 | */ | |
192 | static void font_copy_to_all_vcs(int fd) { | |
b92bea5d | 193 | struct vt_stat vcs = {}; |
ff452e76 CS |
194 | unsigned char map8[E_TABSZ]; |
195 | unsigned short map16[E_TABSZ]; | |
196 | struct unimapdesc unimapd; | |
197 | struct unipair unipairs[USHRT_MAX]; | |
b92bea5d | 198 | int i, r; |
dd04aac9 | 199 | |
d3b37e84 | 200 | /* get active, and 16 bit mask of used VT numbers */ |
d3b37e84 | 201 | r = ioctl(fd, VT_GETSTATE, &vcs); |
ab51b943 LP |
202 | if (r < 0) { |
203 | log_debug_errno(errno, "VT_GETSTATE failed, ignoring: %m"); | |
dd04aac9 | 204 | return; |
ab51b943 | 205 | } |
dd04aac9 | 206 | |
d3b37e84 | 207 | for (i = 1; i <= 15; i++) { |
ab51b943 | 208 | char vcname[strlen("/dev/vcs") + DECIMAL_STR_MAX(int)]; |
7fd1b19b | 209 | _cleanup_close_ int vcfd = -1; |
b92bea5d | 210 | struct console_font_op cfo = {}; |
dd04aac9 | 211 | |
d3b37e84 | 212 | if (i == vcs.v_active) |
dd04aac9 KS |
213 | continue; |
214 | ||
10ffbc99 KS |
215 | /* skip non-allocated ttys */ |
216 | snprintf(vcname, sizeof(vcname), "/dev/vcs%i", i); | |
217 | if (access(vcname, F_OK) < 0) | |
dd04aac9 KS |
218 | continue; |
219 | ||
10ffbc99 | 220 | snprintf(vcname, sizeof(vcname), "/dev/tty%i", i); |
d3b37e84 KS |
221 | vcfd = open_terminal(vcname, O_RDWR|O_CLOEXEC); |
222 | if (vcfd < 0) | |
dd04aac9 KS |
223 | continue; |
224 | ||
d3b37e84 | 225 | /* copy font from active VT, where the font was uploaded to */ |
dd04aac9 | 226 | cfo.op = KD_FONT_OP_COPY; |
d3b37e84 | 227 | cfo.height = vcs.v_active-1; /* tty1 == index 0 */ |
791a4fd8 | 228 | (void) ioctl(vcfd, KDFONTOP, &cfo); |
ff452e76 CS |
229 | |
230 | /* copy map of 8bit chars */ | |
231 | if (ioctl(fd, GIO_SCRNMAP, map8) >= 0) | |
ab51b943 | 232 | (void) ioctl(vcfd, PIO_SCRNMAP, map8); |
ff452e76 CS |
233 | |
234 | /* copy map of 8bit chars -> 16bit Unicode values */ | |
235 | if (ioctl(fd, GIO_UNISCRNMAP, map16) >= 0) | |
ab51b943 | 236 | (void) ioctl(vcfd, PIO_UNISCRNMAP, map16); |
ff452e76 CS |
237 | |
238 | /* copy unicode translation table */ | |
239 | /* unimapd is a ushort count and a pointer to an | |
240 | array of struct unipair { ushort, ushort } */ | |
241 | unimapd.entries = unipairs; | |
242 | unimapd.entry_ct = USHRT_MAX; | |
243 | if (ioctl(fd, GIO_UNIMAP, &unimapd) >= 0) { | |
244 | struct unimapinit adv = { 0, 0, 0 }; | |
245 | ||
791a4fd8 TA |
246 | (void) ioctl(vcfd, PIO_UNIMAPCLR, &adv); |
247 | (void) ioctl(vcfd, PIO_UNIMAP, &unimapd); | |
ff452e76 | 248 | } |
dd04aac9 KS |
249 | } |
250 | } | |
251 | ||
97c4a07d LP |
252 | int main(int argc, char **argv) { |
253 | const char *vc; | |
abee28c5 ZJS |
254 | _cleanup_free_ char |
255 | *vc_keymap = NULL, *vc_keymap_toggle = NULL, | |
256 | *vc_font = NULL, *vc_font_map = NULL, *vc_font_unimap = NULL; | |
257 | _cleanup_close_ int fd = -1; | |
ab51b943 | 258 | bool utf8, font_copy = false, font_ok, keyboard_ok; |
dd04aac9 | 259 | int r = EXIT_FAILURE; |
97c4a07d | 260 | |
944d4c91 | 261 | log_set_target(LOG_TARGET_AUTO); |
97c4a07d LP |
262 | log_parse_environment(); |
263 | log_open(); | |
264 | ||
4c12626c LP |
265 | umask(0022); |
266 | ||
97c4a07d LP |
267 | if (argv[1]) |
268 | vc = argv[1]; | |
dd04aac9 | 269 | else { |
d3b37e84 KS |
270 | vc = "/dev/tty0"; |
271 | font_copy = true; | |
dd04aac9 | 272 | } |
97c4a07d | 273 | |
741f8cf6 LP |
274 | fd = open_terminal(vc, O_RDWR|O_CLOEXEC); |
275 | if (fd < 0) { | |
56f64d95 | 276 | log_error_errno(errno, "Failed to open %s: %m", vc); |
abee28c5 | 277 | return EXIT_FAILURE; |
97c4a07d LP |
278 | } |
279 | ||
653ab83b | 280 | if (!is_vconsole(fd)) { |
97c4a07d | 281 | log_error("Device %s is not a virtual console.", vc); |
abee28c5 | 282 | return EXIT_FAILURE; |
97c4a07d LP |
283 | } |
284 | ||
653ab83b | 285 | utf8 = is_locale_utf8(); |
97c4a07d | 286 | |
2034ec42 MS |
287 | r = parse_env_file("/etc/vconsole.conf", NEWLINE, |
288 | "KEYMAP", &vc_keymap, | |
289 | "KEYMAP_TOGGLE", &vc_keymap_toggle, | |
290 | "FONT", &vc_font, | |
291 | "FONT_MAP", &vc_font_map, | |
292 | "FONT_UNIMAP", &vc_font_unimap, | |
293 | NULL); | |
294 | ||
295 | if (r < 0 && r != -ENOENT) | |
da927ba9 | 296 | log_warning_errno(r, "Failed to read /etc/vconsole.conf: %m"); |
2034ec42 MS |
297 | |
298 | /* Let the kernel command line override /etc/vconsole.conf */ | |
75f86906 | 299 | if (detect_container() <= 0) { |
741f8cf6 LP |
300 | r = parse_env_file("/proc/cmdline", WHITESPACE, |
301 | "vconsole.keymap", &vc_keymap, | |
302 | "vconsole.keymap.toggle", &vc_keymap_toggle, | |
303 | "vconsole.font", &vc_font, | |
304 | "vconsole.font.map", &vc_font_map, | |
305 | "vconsole.font.unimap", &vc_font_unimap, | |
306 | NULL); | |
307 | ||
308 | if (r < 0 && r != -ENOENT) | |
da927ba9 | 309 | log_warning_errno(r, "Failed to read /proc/cmdline: %m"); |
741f8cf6 | 310 | } |
1ebdf5b6 | 311 | |
d305a67b | 312 | if (utf8) |
ab51b943 | 313 | (void) enable_utf8(fd); |
d305a67b | 314 | else |
ab51b943 | 315 | (void) disable_utf8(fd); |
653ab83b | 316 | |
aecb6fcb LP |
317 | font_ok = font_load_and_wait(vc, vc_font, vc_font_map, vc_font_unimap) > 0; |
318 | keyboard_ok = keyboard_load_and_wait(vc, vc_keymap, vc_keymap_toggle, utf8) > 0; | |
97c4a07d | 319 | |
8931278c LDM |
320 | /* Only copy the font when we executed setfont successfully */ |
321 | if (font_copy && font_ok) | |
ab51b943 | 322 | (void) font_copy_to_all_vcs(fd); |
97c4a07d | 323 | |
8931278c | 324 | return font_ok && keyboard_ok ? EXIT_SUCCESS : EXIT_FAILURE; |
97c4a07d | 325 | } |