summaryrefslogtreecommitdiff
path: root/gnu/packages/patches/kmscon-runtime-keymap-switch.patch
blob: 656c76fa4075b92b803bf95fcad7a49b9f03b648 (about) (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
From 360d44d67e7be46108bec982ff2e79b89f04a9a3 Mon Sep 17 00:00:00 2001
From: Mathieu Othacehe <m.othacehe@gmail.com>
Date: Thu, 15 Nov 2018 14:34:40 +0900
Subject: [PATCH] add runtime keymap switch support.

---
 src/pty.c                  | 23 ++++++++++-
 src/uterm_input.c          |  2 +
 src/uterm_input_internal.h |  5 +++
 src/uterm_input_uxkb.c     | 83 ++++++++++++++++++++++++++++++++++++++
 4 files changed, 111 insertions(+), 2 deletions(-)

diff --git a/src/pty.c b/src/pty.c
index 1443f4a..f64cb5b 100644
--- a/src/pty.c
+++ b/src/pty.c
@@ -46,6 +46,8 @@
 
 #define KMSCON_NREAD 16384
 
+#define INPUT_KEYMAP_UPDATE_FILE "/tmp/kmscon-%d-keymap-update"
+
 struct kmscon_pty {
 	unsigned long ref;
 	struct ev_eloop *eloop;
@@ -241,9 +243,22 @@ static bool pty_is_open(struct kmscon_pty *pty)
 	return pty->fd >= 0;
 }
 
+static int kmscon_keymap_update(pid_t pid)
+{
+	char *file;
+	int ret;
+
+	ret = asprintf(&file, INPUT_KEYMAP_UPDATE_FILE, pid);
+	if (ret < 0)
+		return ret;
+
+	return setenv("KEYMAP_UPDATE", file, 1);
+}
+
 static void __attribute__((noreturn))
 exec_child(const char *term, const char *colorterm, char **argv,
-	   const char *seat, const char *vtnr, bool env_reset)
+	   const char *seat, const char *vtnr, bool env_reset,
+	   pid_t kmscon_pid)
 {
 	char **env;
 	char **def_argv;
@@ -277,6 +292,8 @@ exec_child(const char *term, const char *colorterm, char **argv,
 	if (vtnr)
 		setenv("XDG_VTNR", vtnr, 1);
 
+	kmscon_keymap_update(kmscon_pid);
+
 	execve(argv[0], argv, environ);
 
 	log_err("failed to exec child %s: %m", argv[0]);
@@ -383,12 +400,14 @@ static int pty_spawn(struct kmscon_pty *pty, int master,
 			unsigned short width, unsigned short height)
 {
 	pid_t pid;
+	pid_t kmscon_pid;
 	struct winsize ws;
 
 	memset(&ws, 0, sizeof(ws));
 	ws.ws_col = width;
 	ws.ws_row = height;
 
+	kmscon_pid = getpid();
 	pid = fork();
 	switch (pid) {
 	case -1:
@@ -397,7 +416,7 @@ static int pty_spawn(struct kmscon_pty *pty, int master,
 	case 0:
 		setup_child(master, &ws);
 		exec_child(pty->term, pty->colorterm, pty->argv, pty->seat,
-			   pty->vtnr, pty->env_reset);
+			   pty->vtnr, pty->env_reset, kmscon_pid);
 		exit(EXIT_FAILURE);
 	default:
 		log_debug("forking child %d", pid);
diff --git a/src/uterm_input.c b/src/uterm_input.c
index 6fcbc4b..990a09d 100644
--- a/src/uterm_input.c
+++ b/src/uterm_input.c
@@ -178,6 +178,8 @@ static void input_new_dev(struct uterm_input *input,
 	if (ret)
 		goto err_rcodepoints;
 
+	uxkb_dev_keymap_update(dev);
+
 	if (input->awake > 0) {
 		ret = input_wake_up_dev(dev);
 		if (ret)
diff --git a/src/uterm_input_internal.h b/src/uterm_input_internal.h
index 04e6cc9..ec44459 100644
--- a/src/uterm_input_internal.h
+++ b/src/uterm_input_internal.h
@@ -39,6 +39,8 @@
 #include "shl_misc.h"
 #include "uterm_input.h"
 
+#define INPUT_KEYMAP_UPDATE_FILE "/tmp/kmscon-%d-keymap-update"
+
 enum uterm_input_device_capability {
 	UTERM_DEVICE_HAS_KEYS = (1 << 0),
 	UTERM_DEVICE_HAS_LEDS = (1 << 1),
@@ -62,6 +64,8 @@ struct uterm_input_dev {
 
 	bool repeating;
 	struct ev_timer *repeat_timer;
+	struct ev_fd *fd_update;
+	int rupdate_fd;
 };
 
 struct uterm_input {
@@ -95,6 +99,7 @@ void uxkb_desc_destroy(struct uterm_input *input);
 
 int uxkb_dev_init(struct uterm_input_dev *dev);
 void uxkb_dev_destroy(struct uterm_input_dev *dev);
+int uxkb_dev_keymap_update(struct uterm_input_dev *dev);
 int uxkb_dev_process(struct uterm_input_dev *dev,
 		     uint16_t key_state,
 		     uint16_t code);
diff --git a/src/uterm_input_uxkb.c b/src/uterm_input_uxkb.c
index 925c755..4760972 100644
--- a/src/uterm_input_uxkb.c
+++ b/src/uterm_input_uxkb.c
@@ -31,6 +31,9 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
 #include <xkbcommon/xkbcommon.h>
 #include "shl_hook.h"
 #include "shl_llog.h"
@@ -178,6 +181,86 @@ static void timer_event(struct ev_timer *timer, uint64_t num, void *data)
 	shl_hook_call(dev->input->hook, dev->input, &dev->repeat_event);
 }
 
+static void uxkb_keymap_update_handler(struct ev_fd *fd, int mask, void *data)
+{
+	struct uterm_input_dev *dev = data;
+	char in;
+	char keymap[3][255];
+	int pos = 0;
+	int curr_keymap = 0;
+	int ret;
+	char *model, *layout, *variant;
+
+	if (!(mask & EV_READABLE))
+		return;
+
+	memset(keymap, 0, sizeof(keymap));
+
+	model = keymap[0];
+	layout = keymap[1];
+	variant = keymap[2];
+
+	do {
+	  ret = read(dev->rupdate_fd, &in, sizeof(in));
+	  if (ret <= 0)
+	    break;
+
+	  keymap[curr_keymap][pos++] = in;
+
+	  if (in == '\0') {
+	    curr_keymap++;
+	    pos = 0;
+	  }
+	} while (1);
+
+	llog_info(dev->input, "HANDLER CALLED %s|%s|%s\n",
+		  model, layout, variant);
+	uxkb_desc_init(dev->input, model, layout, variant, NULL, NULL);
+
+	dev->state = xkb_state_new(dev->input->keymap);
+	if (!dev->state) {
+		llog_error(dev->input, "cannot create XKB state");
+		return;
+	}
+}
+
+int uxkb_dev_keymap_update(struct uterm_input_dev *dev)
+{
+	int ret;
+	char *file;
+	int pid = getpid();
+
+	ret = asprintf(&file, INPUT_KEYMAP_UPDATE_FILE, pid);
+	if (ret < 0)
+		return ret;
+
+	ret = mkfifo(file, S_IRWXU);
+	if (ret < 0) {
+		llog_warn(dev->input, "could not open fifo");
+		return -EFAULT;
+	}
+	dev->rupdate_fd = open(file, O_RDONLY | O_NONBLOCK);
+	if (dev->rupdate_fd < 0) {
+		llog_warn(dev->input, "cannot open file %s (%d): %m",
+			  file, errno);
+		return -EFAULT;
+	}
+
+	setenv("KEYMAP_UPDATE", file, 1);
+
+	ret = ev_eloop_new_fd(dev->input->eloop, &dev->fd_update,
+			      dev->rupdate_fd, EV_READABLE,
+			      uxkb_keymap_update_handler, dev);
+	if (ret) {
+		llog_error(dev->input, "could not init keymap update");
+		close(dev->rupdate_fd);
+		dev->rupdate_fd = -1;
+		return ret;
+	}
+
+	return 0;
+}
+
 int uxkb_dev_init(struct uterm_input_dev *dev)
 {
 	int ret;
-- 
2.17.1