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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" |
8752c575 | 37 | #include "locale-util.h" |
07630cea | 38 | #include "log.h" |
0b452006 | 39 | #include "process-util.h" |
ce30c8dc | 40 | #include "signal-util.h" |
07630cea LP |
41 | #include "string-util.h" |
42 | #include "terminal-util.h" | |
43 | #include "util.h" | |
44 | #include "virt.h" | |
97c4a07d | 45 | |
653ab83b | 46 | static bool is_vconsole(int fd) { |
97c4a07d LP |
47 | unsigned char data[1]; |
48 | ||
49 | data[0] = TIOCL_GETFGCONSOLE; | |
50 | return ioctl(fd, TIOCLINUX, data) >= 0; | |
97c4a07d LP |
51 | } |
52 | ||
53 | static int disable_utf8(int fd) { | |
54 | int r = 0, k; | |
55 | ||
56 | if (ioctl(fd, KDSKBMODE, K_XLATE) < 0) | |
57 | r = -errno; | |
58 | ||
553acb7b ZJS |
59 | k = loop_write(fd, "\033%@", 3, false); |
60 | if (k < 0) | |
61 | r = k; | |
97c4a07d | 62 | |
ad118bda | 63 | k = write_string_file("/sys/module/vt/parameters/default_utf8", "0", 0); |
741f8cf6 | 64 | if (k < 0) |
97c4a07d LP |
65 | r = k; |
66 | ||
67 | if (r < 0) | |
da927ba9 | 68 | log_warning_errno(r, "Failed to disable UTF-8: %m"); |
97c4a07d LP |
69 | |
70 | return r; | |
71 | } | |
72 | ||
d305a67b TG |
73 | static int enable_utf8(int fd) { |
74 | int r = 0, k; | |
a25d4d0e LP |
75 | long current = 0; |
76 | ||
77 | if (ioctl(fd, KDGKBMODE, ¤t) < 0 || current == K_XLATE) { | |
78 | /* | |
79 | * Change the current keyboard to unicode, unless it | |
80 | * is currently in raw or off mode anyway. We | |
81 | * shouldn't interfere with X11's processing of the | |
82 | * key events. | |
83 | * | |
84 | * http://lists.freedesktop.org/archives/systemd-devel/2013-February/008573.html | |
85 | * | |
86 | */ | |
87 | ||
88 | if (ioctl(fd, KDSKBMODE, K_UNICODE) < 0) | |
89 | r = -errno; | |
90 | } | |
d305a67b | 91 | |
553acb7b ZJS |
92 | k = loop_write(fd, "\033%G", 3, false); |
93 | if (k < 0) | |
94 | r = k; | |
d305a67b | 95 | |
ad118bda | 96 | k = write_string_file("/sys/module/vt/parameters/default_utf8", "1", 0); |
d305a67b TG |
97 | if (k < 0) |
98 | r = k; | |
99 | ||
100 | if (r < 0) | |
da927ba9 | 101 | log_warning_errno(r, "Failed to enable UTF-8: %m"); |
d305a67b TG |
102 | |
103 | return r; | |
104 | } | |
105 | ||
aecb6fcb | 106 | static int keyboard_load_and_wait(const char *vc, const char *map, const char *map_toggle, bool utf8) { |
5b396b06 | 107 | const char *args[8]; |
aecb6fcb | 108 | int i = 0, r; |
97c4a07d LP |
109 | pid_t pid; |
110 | ||
8931278c LDM |
111 | /* An empty map means kernel map */ |
112 | if (isempty(map)) | |
aecb6fcb | 113 | return 1; |
944d4c91 | 114 | |
9841e8e3 | 115 | args[i++] = KBD_LOADKEYS; |
97c4a07d LP |
116 | args[i++] = "-q"; |
117 | args[i++] = "-C"; | |
118 | args[i++] = vc; | |
119 | if (utf8) | |
120 | args[i++] = "-u"; | |
121 | args[i++] = map; | |
5b396b06 AB |
122 | if (map_toggle) |
123 | args[i++] = map_toggle; | |
97c4a07d LP |
124 | args[i++] = NULL; |
125 | ||
741f8cf6 | 126 | pid = fork(); |
aecb6fcb LP |
127 | if (pid < 0) |
128 | return log_error_errno(errno, "Failed to fork: %m"); | |
129 | else if (pid == 0) { | |
ce30c8dc LP |
130 | |
131 | (void) reset_all_signal_handlers(); | |
132 | (void) reset_signal_mask(); | |
133 | ||
97c4a07d LP |
134 | execv(args[0], (char **) args); |
135 | _exit(EXIT_FAILURE); | |
136 | } | |
137 | ||
aecb6fcb LP |
138 | r = wait_for_terminate_and_warn(KBD_LOADKEYS, pid, true); |
139 | if (r < 0) | |
140 | return r; | |
141 | ||
142 | return r == 0; | |
97c4a07d LP |
143 | } |
144 | ||
aecb6fcb | 145 | static int font_load_and_wait(const char *vc, const char *font, const char *map, const char *unimap) { |
97c4a07d | 146 | const char *args[9]; |
aecb6fcb | 147 | int i = 0, r; |
97c4a07d LP |
148 | pid_t pid; |
149 | ||
8931278c LDM |
150 | /* An empty font means kernel font */ |
151 | if (isempty(font)) | |
aecb6fcb | 152 | return 1; |
944d4c91 | 153 | |
9841e8e3 | 154 | args[i++] = KBD_SETFONT; |
97c4a07d LP |
155 | args[i++] = "-C"; |
156 | args[i++] = vc; | |
157 | args[i++] = font; | |
dd36de4d | 158 | if (map) { |
97c4a07d LP |
159 | args[i++] = "-m"; |
160 | args[i++] = map; | |
161 | } | |
dd36de4d | 162 | if (unimap) { |
97c4a07d LP |
163 | args[i++] = "-u"; |
164 | args[i++] = unimap; | |
165 | } | |
166 | args[i++] = NULL; | |
167 | ||
741f8cf6 | 168 | pid = fork(); |
aecb6fcb LP |
169 | if (pid < 0) |
170 | return log_error_errno(errno, "Failed to fork: %m"); | |
171 | else if (pid == 0) { | |
ce30c8dc LP |
172 | |
173 | (void) reset_all_signal_handlers(); | |
174 | (void) reset_signal_mask(); | |
175 | ||
97c4a07d LP |
176 | execv(args[0], (char **) args); |
177 | _exit(EXIT_FAILURE); | |
178 | } | |
179 | ||
aecb6fcb LP |
180 | r = wait_for_terminate_and_warn(KBD_SETFONT, pid, true); |
181 | if (r < 0) | |
182 | return r; | |
183 | ||
184 | return r == 0; | |
97c4a07d LP |
185 | } |
186 | ||
d3b37e84 KS |
187 | /* |
188 | * A newly allocated VT uses the font from the active VT. Here | |
189 | * we update all possibly already allocated VTs with the configured | |
190 | * font. It also allows to restart systemd-vconsole-setup.service, | |
191 | * to apply a new font to all VTs. | |
192 | */ | |
193 | static void font_copy_to_all_vcs(int fd) { | |
b92bea5d | 194 | struct vt_stat vcs = {}; |
ff452e76 CS |
195 | unsigned char map8[E_TABSZ]; |
196 | unsigned short map16[E_TABSZ]; | |
197 | struct unimapdesc unimapd; | |
198 | struct unipair unipairs[USHRT_MAX]; | |
b92bea5d | 199 | int i, r; |
dd04aac9 | 200 | |
d3b37e84 | 201 | /* get active, and 16 bit mask of used VT numbers */ |
d3b37e84 | 202 | r = ioctl(fd, VT_GETSTATE, &vcs); |
ab51b943 LP |
203 | if (r < 0) { |
204 | log_debug_errno(errno, "VT_GETSTATE failed, ignoring: %m"); | |
dd04aac9 | 205 | return; |
ab51b943 | 206 | } |
dd04aac9 | 207 | |
d3b37e84 | 208 | for (i = 1; i <= 15; i++) { |
ab51b943 | 209 | char vcname[strlen("/dev/vcs") + DECIMAL_STR_MAX(int)]; |
7fd1b19b | 210 | _cleanup_close_ int vcfd = -1; |
b92bea5d | 211 | struct console_font_op cfo = {}; |
dd04aac9 | 212 | |
d3b37e84 | 213 | if (i == vcs.v_active) |
dd04aac9 KS |
214 | continue; |
215 | ||
10ffbc99 KS |
216 | /* skip non-allocated ttys */ |
217 | snprintf(vcname, sizeof(vcname), "/dev/vcs%i", i); | |
218 | if (access(vcname, F_OK) < 0) | |
dd04aac9 KS |
219 | continue; |
220 | ||
10ffbc99 | 221 | snprintf(vcname, sizeof(vcname), "/dev/tty%i", i); |
d3b37e84 KS |
222 | vcfd = open_terminal(vcname, O_RDWR|O_CLOEXEC); |
223 | if (vcfd < 0) | |
dd04aac9 KS |
224 | continue; |
225 | ||
d3b37e84 | 226 | /* copy font from active VT, where the font was uploaded to */ |
dd04aac9 | 227 | cfo.op = KD_FONT_OP_COPY; |
d3b37e84 | 228 | cfo.height = vcs.v_active-1; /* tty1 == index 0 */ |
791a4fd8 | 229 | (void) ioctl(vcfd, KDFONTOP, &cfo); |
ff452e76 CS |
230 | |
231 | /* copy map of 8bit chars */ | |
232 | if (ioctl(fd, GIO_SCRNMAP, map8) >= 0) | |
ab51b943 | 233 | (void) ioctl(vcfd, PIO_SCRNMAP, map8); |
ff452e76 CS |
234 | |
235 | /* copy map of 8bit chars -> 16bit Unicode values */ | |
236 | if (ioctl(fd, GIO_UNISCRNMAP, map16) >= 0) | |
ab51b943 | 237 | (void) ioctl(vcfd, PIO_UNISCRNMAP, map16); |
ff452e76 CS |
238 | |
239 | /* copy unicode translation table */ | |
240 | /* unimapd is a ushort count and a pointer to an | |
241 | array of struct unipair { ushort, ushort } */ | |
242 | unimapd.entries = unipairs; | |
243 | unimapd.entry_ct = USHRT_MAX; | |
244 | if (ioctl(fd, GIO_UNIMAP, &unimapd) >= 0) { | |
245 | struct unimapinit adv = { 0, 0, 0 }; | |
246 | ||
791a4fd8 TA |
247 | (void) ioctl(vcfd, PIO_UNIMAPCLR, &adv); |
248 | (void) ioctl(vcfd, PIO_UNIMAP, &unimapd); | |
ff452e76 | 249 | } |
dd04aac9 KS |
250 | } |
251 | } | |
252 | ||
97c4a07d LP |
253 | int main(int argc, char **argv) { |
254 | const char *vc; | |
abee28c5 ZJS |
255 | _cleanup_free_ char |
256 | *vc_keymap = NULL, *vc_keymap_toggle = NULL, | |
257 | *vc_font = NULL, *vc_font_map = NULL, *vc_font_unimap = NULL; | |
258 | _cleanup_close_ int fd = -1; | |
ab51b943 | 259 | bool utf8, font_copy = false, font_ok, keyboard_ok; |
dd04aac9 | 260 | int r = EXIT_FAILURE; |
97c4a07d | 261 | |
944d4c91 | 262 | log_set_target(LOG_TARGET_AUTO); |
97c4a07d LP |
263 | log_parse_environment(); |
264 | log_open(); | |
265 | ||
4c12626c LP |
266 | umask(0022); |
267 | ||
97c4a07d LP |
268 | if (argv[1]) |
269 | vc = argv[1]; | |
dd04aac9 | 270 | else { |
d3b37e84 KS |
271 | vc = "/dev/tty0"; |
272 | font_copy = true; | |
dd04aac9 | 273 | } |
97c4a07d | 274 | |
741f8cf6 LP |
275 | fd = open_terminal(vc, O_RDWR|O_CLOEXEC); |
276 | if (fd < 0) { | |
56f64d95 | 277 | log_error_errno(errno, "Failed to open %s: %m", vc); |
abee28c5 | 278 | return EXIT_FAILURE; |
97c4a07d LP |
279 | } |
280 | ||
653ab83b | 281 | if (!is_vconsole(fd)) { |
97c4a07d | 282 | log_error("Device %s is not a virtual console.", vc); |
abee28c5 | 283 | return EXIT_FAILURE; |
97c4a07d LP |
284 | } |
285 | ||
653ab83b | 286 | utf8 = is_locale_utf8(); |
97c4a07d | 287 | |
2034ec42 MS |
288 | r = parse_env_file("/etc/vconsole.conf", NEWLINE, |
289 | "KEYMAP", &vc_keymap, | |
290 | "KEYMAP_TOGGLE", &vc_keymap_toggle, | |
291 | "FONT", &vc_font, | |
292 | "FONT_MAP", &vc_font_map, | |
293 | "FONT_UNIMAP", &vc_font_unimap, | |
294 | NULL); | |
295 | ||
296 | if (r < 0 && r != -ENOENT) | |
da927ba9 | 297 | log_warning_errno(r, "Failed to read /etc/vconsole.conf: %m"); |
2034ec42 MS |
298 | |
299 | /* Let the kernel command line override /etc/vconsole.conf */ | |
75f86906 | 300 | if (detect_container() <= 0) { |
741f8cf6 LP |
301 | r = parse_env_file("/proc/cmdline", WHITESPACE, |
302 | "vconsole.keymap", &vc_keymap, | |
303 | "vconsole.keymap.toggle", &vc_keymap_toggle, | |
304 | "vconsole.font", &vc_font, | |
305 | "vconsole.font.map", &vc_font_map, | |
306 | "vconsole.font.unimap", &vc_font_unimap, | |
307 | NULL); | |
308 | ||
309 | if (r < 0 && r != -ENOENT) | |
da927ba9 | 310 | log_warning_errno(r, "Failed to read /proc/cmdline: %m"); |
741f8cf6 | 311 | } |
1ebdf5b6 | 312 | |
d305a67b | 313 | if (utf8) |
ab51b943 | 314 | (void) enable_utf8(fd); |
d305a67b | 315 | else |
ab51b943 | 316 | (void) disable_utf8(fd); |
653ab83b | 317 | |
aecb6fcb LP |
318 | font_ok = font_load_and_wait(vc, vc_font, vc_font_map, vc_font_unimap) > 0; |
319 | keyboard_ok = keyboard_load_and_wait(vc, vc_keymap, vc_keymap_toggle, utf8) > 0; | |
97c4a07d | 320 | |
8931278c LDM |
321 | /* Only copy the font when we executed setfont successfully */ |
322 | if (font_copy && font_ok) | |
ab51b943 | 323 | (void) font_copy_to_all_vcs(fd); |
97c4a07d | 324 | |
8931278c | 325 | return font_ok && keyboard_ok ? EXIT_SUCCESS : EXIT_FAILURE; |
97c4a07d | 326 | } |