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97c4a07d LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2010 Kay Sievers | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
7 | under the terms of the GNU Lesser General Public License as published by |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
97c4a07d LP |
9 | (at your option) any later version. |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 14 | Lesser General Public License for more details. |
97c4a07d | 15 | |
5430f7f2 | 16 | You should have received a copy of the GNU Lesser General Public License |
97c4a07d LP |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
18 | ***/ | |
19 | ||
97c4a07d | 20 | #include <errno.h> |
97c4a07d | 21 | #include <fcntl.h> |
97c4a07d | 22 | #include <limits.h> |
97c4a07d | 23 | #include <linux/kd.h> |
07630cea | 24 | #include <linux/tiocl.h> |
dd04aac9 | 25 | #include <linux/vt.h> |
07630cea LP |
26 | #include <stdbool.h> |
27 | #include <stdio.h> | |
28 | #include <stdlib.h> | |
29 | #include <sys/ioctl.h> | |
042d7f50 | 30 | #include <termios.h> |
07630cea | 31 | #include <unistd.h> |
97c4a07d | 32 | |
b5efdb8a | 33 | #include "alloc-util.h" |
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" |
d054f0a4 | 41 | #include "stdio-util.h" |
07630cea LP |
42 | #include "string-util.h" |
43 | #include "terminal-util.h" | |
44 | #include "util.h" | |
45 | #include "virt.h" | |
97c4a07d | 46 | |
653ab83b | 47 | static bool is_vconsole(int fd) { |
97c4a07d LP |
48 | unsigned char data[1]; |
49 | ||
50 | data[0] = TIOCL_GETFGCONSOLE; | |
51 | return ioctl(fd, TIOCLINUX, data) >= 0; | |
97c4a07d LP |
52 | } |
53 | ||
03044059 MS |
54 | static bool is_allocated(unsigned int idx) { |
55 | char vcname[strlen("/dev/vcs") + DECIMAL_STR_MAX(int)]; | |
56 | ||
57 | xsprintf(vcname, "/dev/vcs%i", idx); | |
58 | return access(vcname, F_OK) == 0; | |
59 | } | |
60 | ||
61 | static bool is_allocated_byfd(int fd) { | |
62 | struct vt_stat vcs = {}; | |
63 | ||
64 | if (ioctl(fd, VT_GETSTATE, &vcs) < 0) { | |
65 | log_warning_errno(errno, "VT_GETSTATE failed: %m"); | |
66 | return false; | |
67 | } | |
68 | return is_allocated(vcs.v_active); | |
69 | } | |
70 | ||
71 | static bool is_settable(int fd) { | |
72 | int r, curr_mode; | |
73 | ||
74 | r = ioctl(fd, KDGKBMODE, &curr_mode); | |
75 | /* | |
76 | * Make sure we only adjust consoles in K_XLATE or K_UNICODE mode. | |
77 | * Oterwise we would (likely) interfere with X11's processing of the | |
78 | * key events. | |
79 | * | |
80 | * http://lists.freedesktop.org/archives/systemd-devel/2013-February/008573.html | |
81 | */ | |
82 | return r == 0 && IN_SET(curr_mode, K_XLATE, K_UNICODE); | |
83 | } | |
84 | ||
042d7f50 MS |
85 | static int toggle_utf8(int fd, bool utf8) { |
86 | int r; | |
87 | struct termios tc = {}; | |
97c4a07d | 88 | |
042d7f50 | 89 | r = ioctl(fd, KDSKBMODE, utf8 ? K_UNICODE : K_XLATE); |
97c4a07d | 90 | if (r < 0) |
042d7f50 | 91 | return log_warning_errno(errno, "Failed to %s UTF-8 kbdmode: %m", utf8 ? "enable" : "disable"); |
97c4a07d | 92 | |
042d7f50 MS |
93 | r = loop_write(fd, utf8 ? "\033%G" : "\033%@", 3, false); |
94 | if (r < 0) | |
95 | return log_warning_errno(r, "Failed to %s UTF-8 term processing: %m", utf8 ? "enable" : "disable"); | |
96 | ||
97 | r = tcgetattr(fd, &tc); | |
98 | if (r >= 0) { | |
99 | if (utf8) | |
100 | tc.c_iflag |= IUTF8; | |
101 | else | |
102 | tc.c_iflag &= ~IUTF8; | |
103 | r = tcsetattr(fd, TCSANOW, &tc); | |
a25d4d0e | 104 | } |
042d7f50 MS |
105 | if (r < 0) |
106 | return log_warning_errno(errno, "Failed to %s iutf8 flag: %m", utf8 ? "enable" : "disable"); | |
d305a67b | 107 | |
042d7f50 MS |
108 | return 0; |
109 | } | |
d305a67b | 110 | |
042d7f50 MS |
111 | static int toggle_utf8_sysfs(bool utf8) { |
112 | int r; | |
d305a67b | 113 | |
042d7f50 | 114 | r = write_string_file("/sys/module/vt/parameters/default_utf8", one_zero(utf8), 0); |
d305a67b | 115 | if (r < 0) |
042d7f50 | 116 | log_warning_errno(r, "Failed to %s sysfs UTF-8 flag: %m", utf8 ? "enable" : "disable"); |
d305a67b TG |
117 | return r; |
118 | } | |
119 | ||
aecb6fcb | 120 | static int keyboard_load_and_wait(const char *vc, const char *map, const char *map_toggle, bool utf8) { |
5b396b06 | 121 | const char *args[8]; |
aecb6fcb | 122 | int i = 0, r; |
97c4a07d LP |
123 | pid_t pid; |
124 | ||
8931278c LDM |
125 | /* An empty map means kernel map */ |
126 | if (isempty(map)) | |
aecb6fcb | 127 | return 1; |
944d4c91 | 128 | |
9841e8e3 | 129 | args[i++] = KBD_LOADKEYS; |
97c4a07d LP |
130 | args[i++] = "-q"; |
131 | args[i++] = "-C"; | |
132 | args[i++] = vc; | |
133 | if (utf8) | |
134 | args[i++] = "-u"; | |
135 | args[i++] = map; | |
5b396b06 AB |
136 | if (map_toggle) |
137 | args[i++] = map_toggle; | |
97c4a07d LP |
138 | args[i++] = NULL; |
139 | ||
741f8cf6 | 140 | pid = fork(); |
aecb6fcb LP |
141 | if (pid < 0) |
142 | return log_error_errno(errno, "Failed to fork: %m"); | |
143 | else if (pid == 0) { | |
ce30c8dc LP |
144 | |
145 | (void) reset_all_signal_handlers(); | |
146 | (void) reset_signal_mask(); | |
147 | ||
97c4a07d LP |
148 | execv(args[0], (char **) args); |
149 | _exit(EXIT_FAILURE); | |
150 | } | |
151 | ||
aecb6fcb LP |
152 | r = wait_for_terminate_and_warn(KBD_LOADKEYS, pid, true); |
153 | if (r < 0) | |
154 | return r; | |
155 | ||
156 | return r == 0; | |
97c4a07d LP |
157 | } |
158 | ||
aecb6fcb | 159 | static int font_load_and_wait(const char *vc, const char *font, const char *map, const char *unimap) { |
97c4a07d | 160 | const char *args[9]; |
aecb6fcb | 161 | int i = 0, r; |
97c4a07d LP |
162 | pid_t pid; |
163 | ||
8931278c LDM |
164 | /* An empty font means kernel font */ |
165 | if (isempty(font)) | |
aecb6fcb | 166 | return 1; |
944d4c91 | 167 | |
9841e8e3 | 168 | args[i++] = KBD_SETFONT; |
97c4a07d LP |
169 | args[i++] = "-C"; |
170 | args[i++] = vc; | |
171 | args[i++] = font; | |
dd36de4d | 172 | if (map) { |
97c4a07d LP |
173 | args[i++] = "-m"; |
174 | args[i++] = map; | |
175 | } | |
dd36de4d | 176 | if (unimap) { |
97c4a07d LP |
177 | args[i++] = "-u"; |
178 | args[i++] = unimap; | |
179 | } | |
180 | args[i++] = NULL; | |
181 | ||
741f8cf6 | 182 | pid = fork(); |
aecb6fcb LP |
183 | if (pid < 0) |
184 | return log_error_errno(errno, "Failed to fork: %m"); | |
185 | else if (pid == 0) { | |
ce30c8dc LP |
186 | |
187 | (void) reset_all_signal_handlers(); | |
188 | (void) reset_signal_mask(); | |
189 | ||
97c4a07d LP |
190 | execv(args[0], (char **) args); |
191 | _exit(EXIT_FAILURE); | |
192 | } | |
193 | ||
aecb6fcb LP |
194 | r = wait_for_terminate_and_warn(KBD_SETFONT, pid, true); |
195 | if (r < 0) | |
196 | return r; | |
197 | ||
198 | return r == 0; | |
97c4a07d LP |
199 | } |
200 | ||
d3b37e84 KS |
201 | /* |
202 | * A newly allocated VT uses the font from the active VT. Here | |
203 | * we update all possibly already allocated VTs with the configured | |
204 | * font. It also allows to restart systemd-vconsole-setup.service, | |
205 | * to apply a new font to all VTs. | |
206 | */ | |
207 | static void font_copy_to_all_vcs(int fd) { | |
b92bea5d | 208 | struct vt_stat vcs = {}; |
ff452e76 | 209 | struct unimapdesc unimapd; |
6a08e1b0 | 210 | _cleanup_free_ struct unipair* unipairs = NULL; |
b92bea5d | 211 | int i, r; |
dd04aac9 | 212 | |
6a08e1b0 | 213 | unipairs = new(struct unipair, USHRT_MAX); |
e2c9192a LP |
214 | if (!unipairs) { |
215 | log_oom(); | |
6a08e1b0 KR |
216 | return; |
217 | } | |
218 | ||
d3b37e84 | 219 | /* get active, and 16 bit mask of used VT numbers */ |
d3b37e84 | 220 | r = ioctl(fd, VT_GETSTATE, &vcs); |
ab51b943 LP |
221 | if (r < 0) { |
222 | log_debug_errno(errno, "VT_GETSTATE failed, ignoring: %m"); | |
dd04aac9 | 223 | return; |
ab51b943 | 224 | } |
dd04aac9 | 225 | |
9fa71843 | 226 | for (i = 1; i <= 63; i++) { |
ab51b943 | 227 | char vcname[strlen("/dev/vcs") + DECIMAL_STR_MAX(int)]; |
7fd1b19b | 228 | _cleanup_close_ int vcfd = -1; |
b92bea5d | 229 | struct console_font_op cfo = {}; |
dd04aac9 | 230 | |
d3b37e84 | 231 | if (i == vcs.v_active) |
dd04aac9 KS |
232 | continue; |
233 | ||
10ffbc99 | 234 | /* skip non-allocated ttys */ |
d054f0a4 | 235 | xsprintf(vcname, "/dev/vcs%i", i); |
10ffbc99 | 236 | if (access(vcname, F_OK) < 0) |
dd04aac9 KS |
237 | continue; |
238 | ||
d054f0a4 | 239 | xsprintf(vcname, "/dev/tty%i", i); |
d3b37e84 KS |
240 | vcfd = open_terminal(vcname, O_RDWR|O_CLOEXEC); |
241 | if (vcfd < 0) | |
dd04aac9 KS |
242 | continue; |
243 | ||
d3b37e84 | 244 | /* copy font from active VT, where the font was uploaded to */ |
dd04aac9 | 245 | cfo.op = KD_FONT_OP_COPY; |
d3b37e84 | 246 | cfo.height = vcs.v_active-1; /* tty1 == index 0 */ |
791a4fd8 | 247 | (void) ioctl(vcfd, KDFONTOP, &cfo); |
ff452e76 | 248 | |
ff452e76 CS |
249 | /* copy unicode translation table */ |
250 | /* unimapd is a ushort count and a pointer to an | |
251 | array of struct unipair { ushort, ushort } */ | |
252 | unimapd.entries = unipairs; | |
253 | unimapd.entry_ct = USHRT_MAX; | |
254 | if (ioctl(fd, GIO_UNIMAP, &unimapd) >= 0) { | |
255 | struct unimapinit adv = { 0, 0, 0 }; | |
256 | ||
791a4fd8 TA |
257 | (void) ioctl(vcfd, PIO_UNIMAPCLR, &adv); |
258 | (void) ioctl(vcfd, PIO_UNIMAP, &unimapd); | |
ff452e76 | 259 | } |
dd04aac9 KS |
260 | } |
261 | } | |
262 | ||
97c4a07d LP |
263 | int main(int argc, char **argv) { |
264 | const char *vc; | |
abee28c5 ZJS |
265 | _cleanup_free_ char |
266 | *vc_keymap = NULL, *vc_keymap_toggle = NULL, | |
267 | *vc_font = NULL, *vc_font_map = NULL, *vc_font_unimap = NULL; | |
268 | _cleanup_close_ int fd = -1; | |
ab51b943 | 269 | bool utf8, font_copy = false, font_ok, keyboard_ok; |
dd04aac9 | 270 | int r = EXIT_FAILURE; |
97c4a07d | 271 | |
944d4c91 | 272 | log_set_target(LOG_TARGET_AUTO); |
97c4a07d LP |
273 | log_parse_environment(); |
274 | log_open(); | |
275 | ||
4c12626c LP |
276 | umask(0022); |
277 | ||
97c4a07d LP |
278 | if (argv[1]) |
279 | vc = argv[1]; | |
dd04aac9 | 280 | else { |
d3b37e84 KS |
281 | vc = "/dev/tty0"; |
282 | font_copy = true; | |
dd04aac9 | 283 | } |
97c4a07d | 284 | |
741f8cf6 LP |
285 | fd = open_terminal(vc, O_RDWR|O_CLOEXEC); |
286 | if (fd < 0) { | |
709f6e46 | 287 | log_error_errno(fd, "Failed to open %s: %m", vc); |
abee28c5 | 288 | return EXIT_FAILURE; |
97c4a07d LP |
289 | } |
290 | ||
653ab83b | 291 | if (!is_vconsole(fd)) { |
97c4a07d | 292 | log_error("Device %s is not a virtual console.", vc); |
abee28c5 | 293 | return EXIT_FAILURE; |
97c4a07d LP |
294 | } |
295 | ||
03044059 MS |
296 | if (!is_allocated_byfd(fd)) { |
297 | log_error("Virtual console %s is not allocated.", vc); | |
298 | return EXIT_FAILURE; | |
299 | } | |
300 | ||
301 | if (!is_settable(fd)) { | |
302 | log_error("Virtual console %s is not in K_XLATE or K_UNICODE.", vc); | |
303 | return EXIT_FAILURE; | |
304 | } | |
305 | ||
653ab83b | 306 | utf8 = is_locale_utf8(); |
97c4a07d | 307 | |
2034ec42 MS |
308 | r = parse_env_file("/etc/vconsole.conf", NEWLINE, |
309 | "KEYMAP", &vc_keymap, | |
310 | "KEYMAP_TOGGLE", &vc_keymap_toggle, | |
311 | "FONT", &vc_font, | |
312 | "FONT_MAP", &vc_font_map, | |
313 | "FONT_UNIMAP", &vc_font_unimap, | |
314 | NULL); | |
315 | ||
316 | if (r < 0 && r != -ENOENT) | |
da927ba9 | 317 | log_warning_errno(r, "Failed to read /etc/vconsole.conf: %m"); |
2034ec42 MS |
318 | |
319 | /* Let the kernel command line override /etc/vconsole.conf */ | |
75f86906 | 320 | if (detect_container() <= 0) { |
741f8cf6 LP |
321 | r = parse_env_file("/proc/cmdline", WHITESPACE, |
322 | "vconsole.keymap", &vc_keymap, | |
323 | "vconsole.keymap.toggle", &vc_keymap_toggle, | |
324 | "vconsole.font", &vc_font, | |
325 | "vconsole.font.map", &vc_font_map, | |
326 | "vconsole.font.unimap", &vc_font_unimap, | |
327 | NULL); | |
328 | ||
329 | if (r < 0 && r != -ENOENT) | |
da927ba9 | 330 | log_warning_errno(r, "Failed to read /proc/cmdline: %m"); |
741f8cf6 | 331 | } |
1ebdf5b6 | 332 | |
042d7f50 MS |
333 | toggle_utf8_sysfs(utf8); |
334 | toggle_utf8(fd, utf8); | |
653ab83b | 335 | |
aecb6fcb LP |
336 | font_ok = font_load_and_wait(vc, vc_font, vc_font_map, vc_font_unimap) > 0; |
337 | keyboard_ok = keyboard_load_and_wait(vc, vc_keymap, vc_keymap_toggle, utf8) > 0; | |
97c4a07d | 338 | |
8931278c LDM |
339 | /* Only copy the font when we executed setfont successfully */ |
340 | if (font_copy && font_ok) | |
ab51b943 | 341 | (void) font_copy_to_all_vcs(fd); |
97c4a07d | 342 | |
8931278c | 343 | return font_ok && keyboard_ok ? EXIT_SUCCESS : EXIT_FAILURE; |
97c4a07d | 344 | } |