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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 | ||
22 | #include <stdio.h> | |
23 | #include <unistd.h> | |
24 | #include <stdlib.h> | |
25 | #include <errno.h> | |
26 | #include <string.h> | |
27 | #include <fcntl.h> | |
28 | #include <ctype.h> | |
29 | #include <stdbool.h> | |
30 | #include <stdarg.h> | |
31 | #include <limits.h> | |
97c4a07d LP |
32 | #include <sys/ioctl.h> |
33 | #include <sys/wait.h> | |
34 | #include <linux/tiocl.h> | |
35 | #include <linux/kd.h> | |
dd04aac9 | 36 | #include <linux/vt.h> |
97c4a07d LP |
37 | |
38 | #include "util.h" | |
39 | #include "log.h" | |
40 | #include "macro.h" | |
b52aae1d | 41 | #include "virt.h" |
97c4a07d | 42 | |
653ab83b | 43 | static bool is_vconsole(int fd) { |
97c4a07d LP |
44 | unsigned char data[1]; |
45 | ||
46 | data[0] = TIOCL_GETFGCONSOLE; | |
47 | return ioctl(fd, TIOCLINUX, data) >= 0; | |
97c4a07d LP |
48 | } |
49 | ||
50 | static int disable_utf8(int fd) { | |
51 | int r = 0, k; | |
52 | ||
53 | if (ioctl(fd, KDSKBMODE, K_XLATE) < 0) | |
54 | r = -errno; | |
55 | ||
56 | if (loop_write(fd, "\033%@", 3, false) < 0) | |
57 | r = -errno; | |
58 | ||
741f8cf6 LP |
59 | k = write_one_line_file("/sys/module/vt/parameters/default_utf8", "0"); |
60 | if (k < 0) | |
97c4a07d LP |
61 | r = k; |
62 | ||
63 | if (r < 0) | |
741f8cf6 | 64 | log_warning("Failed to disable UTF-8: %s", strerror(-r)); |
97c4a07d LP |
65 | |
66 | return r; | |
67 | } | |
68 | ||
d305a67b TG |
69 | static int enable_utf8(int fd) { |
70 | int r = 0, k; | |
71 | ||
72 | if (ioctl(fd, KDSKBMODE, K_UNICODE) < 0) | |
73 | r = -errno; | |
74 | ||
75 | if (loop_write(fd, "\033%G", 3, false) < 0) | |
76 | r = -errno; | |
77 | ||
78 | k = write_one_line_file("/sys/module/vt/parameters/default_utf8", "1"); | |
79 | if (k < 0) | |
80 | r = k; | |
81 | ||
82 | if (r < 0) | |
83 | log_warning("Failed to enable UTF-8: %s", strerror(-r)); | |
84 | ||
85 | return r; | |
86 | } | |
87 | ||
dd04aac9 | 88 | static int keymap_load(const char *vc, const char *map, const char *map_toggle, bool utf8, pid_t *_pid) { |
5b396b06 | 89 | const char *args[8]; |
97c4a07d LP |
90 | int i = 0; |
91 | pid_t pid; | |
92 | ||
944d4c91 LP |
93 | if (isempty(map)) { |
94 | /* An empty map means kernel map */ | |
95 | *_pid = 0; | |
96 | return 0; | |
97 | } | |
98 | ||
9841e8e3 | 99 | args[i++] = KBD_LOADKEYS; |
97c4a07d LP |
100 | args[i++] = "-q"; |
101 | args[i++] = "-C"; | |
102 | args[i++] = vc; | |
103 | if (utf8) | |
104 | args[i++] = "-u"; | |
105 | args[i++] = map; | |
5b396b06 AB |
106 | if (map_toggle) |
107 | args[i++] = map_toggle; | |
97c4a07d LP |
108 | args[i++] = NULL; |
109 | ||
741f8cf6 LP |
110 | pid = fork(); |
111 | if (pid < 0) { | |
97c4a07d LP |
112 | log_error("Failed to fork: %m"); |
113 | return -errno; | |
114 | } else if (pid == 0) { | |
115 | execv(args[0], (char **) args); | |
116 | _exit(EXIT_FAILURE); | |
117 | } | |
118 | ||
119 | *_pid = pid; | |
120 | return 0; | |
121 | } | |
122 | ||
dd04aac9 | 123 | static int font_load(const char *vc, const char *font, const char *map, const char *unimap, pid_t *_pid) { |
97c4a07d LP |
124 | const char *args[9]; |
125 | int i = 0; | |
126 | pid_t pid; | |
127 | ||
944d4c91 LP |
128 | if (isempty(font)) { |
129 | /* An empty font means kernel font */ | |
130 | *_pid = 0; | |
131 | return 0; | |
132 | } | |
133 | ||
9841e8e3 | 134 | args[i++] = KBD_SETFONT; |
97c4a07d LP |
135 | args[i++] = "-C"; |
136 | args[i++] = vc; | |
137 | args[i++] = font; | |
dd36de4d | 138 | if (map) { |
97c4a07d LP |
139 | args[i++] = "-m"; |
140 | args[i++] = map; | |
141 | } | |
dd36de4d | 142 | if (unimap) { |
97c4a07d LP |
143 | args[i++] = "-u"; |
144 | args[i++] = unimap; | |
145 | } | |
146 | args[i++] = NULL; | |
147 | ||
741f8cf6 LP |
148 | pid = fork(); |
149 | if (pid < 0) { | |
97c4a07d LP |
150 | log_error("Failed to fork: %m"); |
151 | return -errno; | |
152 | } else if (pid == 0) { | |
153 | execv(args[0], (char **) args); | |
154 | _exit(EXIT_FAILURE); | |
155 | } | |
156 | ||
157 | *_pid = pid; | |
158 | return 0; | |
159 | } | |
160 | ||
dd04aac9 KS |
161 | static void font_copy_to_all_vts(int fd, int from_vt) { |
162 | struct vt_stat vts; | |
163 | unsigned short bits; | |
164 | int i; | |
165 | int r; | |
166 | ||
167 | /* get 16 bit mask of used VT numbers */ | |
168 | zero(vts); | |
169 | r = ioctl(fd, VT_GETSTATE, &vts); | |
170 | if (r < 0) | |
171 | return; | |
172 | ||
173 | bits = vts.v_state; | |
174 | for (i = 1; i <= 16; i++) { | |
175 | char vtname[16]; | |
176 | int vtfd; | |
177 | struct console_font_op cfo; | |
178 | bool used; | |
179 | ||
180 | /* skip unused VTs */ | |
181 | used = bits & 1; | |
182 | bits >>= 1; | |
183 | if (!used) | |
184 | continue; | |
185 | ||
186 | if (i == from_vt) | |
187 | continue; | |
188 | ||
189 | snprintf(vtname , sizeof(vtname), "/dev/tty%i", i); | |
190 | vtfd = open_terminal(vtname, O_RDWR|O_CLOEXEC); | |
191 | if (vtfd < 0) | |
192 | continue; | |
193 | ||
194 | /* copy font from from_vt to this VT */ | |
195 | zero(cfo); | |
196 | cfo.op = KD_FONT_OP_COPY; | |
197 | /* the index numbers seem to start at 0 for tty1 */ | |
198 | cfo.height = from_vt - 1; | |
199 | ioctl(vtfd, KDFONTOP, &cfo); | |
200 | ||
201 | close_nointr_nofail(vtfd); | |
202 | } | |
203 | } | |
204 | ||
97c4a07d LP |
205 | int main(int argc, char **argv) { |
206 | const char *vc; | |
207 | char *vc_keymap = NULL; | |
5b396b06 | 208 | char *vc_keymap_toggle = NULL; |
97c4a07d LP |
209 | char *vc_font = NULL; |
210 | char *vc_font_map = NULL; | |
211 | char *vc_font_unimap = NULL; | |
212 | int fd = -1; | |
213 | bool utf8; | |
97c4a07d | 214 | pid_t font_pid = 0, keymap_pid = 0; |
dd04aac9 KS |
215 | int font_copy_from_vt = 0; |
216 | int r = EXIT_FAILURE; | |
97c4a07d | 217 | |
944d4c91 | 218 | log_set_target(LOG_TARGET_AUTO); |
97c4a07d LP |
219 | log_parse_environment(); |
220 | log_open(); | |
221 | ||
4c12626c LP |
222 | umask(0022); |
223 | ||
97c4a07d LP |
224 | if (argv[1]) |
225 | vc = argv[1]; | |
dd04aac9 KS |
226 | else { |
227 | vc = "/dev/tty1"; | |
228 | font_copy_from_vt = 1; | |
229 | } | |
97c4a07d | 230 | |
741f8cf6 LP |
231 | fd = open_terminal(vc, O_RDWR|O_CLOEXEC); |
232 | if (fd < 0) { | |
97c4a07d LP |
233 | log_error("Failed to open %s: %m", vc); |
234 | goto finish; | |
235 | } | |
236 | ||
653ab83b | 237 | if (!is_vconsole(fd)) { |
97c4a07d LP |
238 | log_error("Device %s is not a virtual console.", vc); |
239 | goto finish; | |
240 | } | |
241 | ||
653ab83b | 242 | utf8 = is_locale_utf8(); |
97c4a07d | 243 | |
944d4c91 LP |
244 | r = 0; |
245 | ||
741f8cf6 LP |
246 | if (detect_container(NULL) <= 0) { |
247 | r = parse_env_file("/proc/cmdline", WHITESPACE, | |
248 | "vconsole.keymap", &vc_keymap, | |
249 | "vconsole.keymap.toggle", &vc_keymap_toggle, | |
250 | "vconsole.font", &vc_font, | |
251 | "vconsole.font.map", &vc_font_map, | |
252 | "vconsole.font.unimap", &vc_font_unimap, | |
253 | NULL); | |
254 | ||
255 | if (r < 0 && r != -ENOENT) | |
256 | log_warning("Failed to read /proc/cmdline: %s", strerror(-r)); | |
257 | } | |
1ebdf5b6 | 258 | |
653ab83b | 259 | /* Hmm, nothing set on the kernel cmd line? Then let's |
fd5bf055 | 260 | * try /etc/vconsole.conf */ |
741f8cf6 LP |
261 | if (r <= 0) { |
262 | r = parse_env_file("/etc/vconsole.conf", NEWLINE, | |
263 | "KEYMAP", &vc_keymap, | |
264 | "KEYMAP_TOGGLE", &vc_keymap_toggle, | |
265 | "FONT", &vc_font, | |
266 | "FONT_MAP", &vc_font_map, | |
267 | "FONT_UNIMAP", &vc_font_unimap, | |
268 | NULL); | |
269 | ||
270 | if (r < 0 && r != -ENOENT) | |
fd5bf055 | 271 | log_warning("Failed to read /etc/vconsole.conf: %s", strerror(-r)); |
1ebdf5b6 | 272 | } |
ae509abc | 273 | |
d305a67b TG |
274 | if (utf8) |
275 | enable_utf8(fd); | |
276 | else | |
653ab83b LP |
277 | disable_utf8(fd); |
278 | ||
dd04aac9 KS |
279 | r = EXIT_FAILURE; |
280 | if (keymap_load(vc, vc_keymap, vc_keymap_toggle, utf8, &keymap_pid) >= 0 && | |
281 | font_load(vc, vc_font, vc_font_map, vc_font_unimap, &font_pid) >= 0) | |
97c4a07d LP |
282 | r = EXIT_SUCCESS; |
283 | ||
284 | finish: | |
285 | if (keymap_pid > 0) | |
9841e8e3 | 286 | wait_for_terminate_and_warn(KBD_LOADKEYS, keymap_pid); |
97c4a07d | 287 | |
dd04aac9 | 288 | if (font_pid > 0) { |
9841e8e3 | 289 | wait_for_terminate_and_warn(KBD_SETFONT, font_pid); |
dd04aac9 KS |
290 | if (font_copy_from_vt > 0) |
291 | font_copy_to_all_vts(fd, font_copy_from_vt); | |
292 | } | |
97c4a07d LP |
293 | |
294 | free(vc_keymap); | |
295 | free(vc_font); | |
296 | free(vc_font_map); | |
297 | free(vc_font_unimap); | |
298 | ||
299 | if (fd >= 0) | |
300 | close_nointr_nofail(fd); | |
301 | ||
302 | return r; | |
303 | } |