Codebase list cinnamon-settings-daemon / 619ed93
wacom: Drop LED helper (#337) GNOME has already gotten rid of it, for a simple reason - the kernel supports it. "LED switching on Wacom devices is implemented by the kernel driver since v4.9. It is already about 4 years old, it's late enough that we may drop this code." Better to not have any LED switching from csd fighting the kernel. GNOME commit: https://github.com/GNOME/gnome-settings-daemon/commit/2ff2edeb169646fe2d6bb3bc358fbf38b0b62f5d Joshua Peisach authored 2 years ago GitHub committed 2 years ago
3 changed file(s) with 0 addition(s) and 249 deletion(s). Raw diff Collapse all Expand all
+0
-181
plugins/wacom/csd-wacom-led-helper.c less more
0 /*
1 * Copyright (C) 2010-2011 Richard Hughes <richard@hughsie.com>
2 * Copyright (C) 2012 Bastien Nocera <hadess@hadess.net>
3 *
4 * Licensed under the GNU General Public License Version 2
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 */
20
21 #include "config.h"
22
23 #include <glib.h>
24 #include <locale.h>
25 #include <unistd.h>
26 #include <sys/types.h>
27 #include <sys/stat.h>
28 #include <fcntl.h>
29 #include <string.h>
30 #include <gudev/gudev.h>
31
32 static gboolean
33 csd_wacom_led_helper_write (const gchar *filename, gint value, GError **error)
34 {
35 gchar *text = NULL;
36 gint retval;
37 gint length;
38 gint fd = -1;
39 gboolean ret = TRUE;
40
41 fd = open (filename, O_WRONLY);
42 if (fd < 0) {
43 ret = FALSE;
44 g_set_error (error, 1, 0, "failed to open filename: %s", filename);
45 goto out;
46 }
47
48 /* convert to text */
49 text = g_strdup_printf ("%i", value);
50 length = strlen (text);
51
52 /* write to device file */
53 retval = write (fd, text, length);
54 if (retval != length) {
55 ret = FALSE;
56 g_set_error (error, 1, 0, "writing '%s' to %s failed", text, filename);
57 goto out;
58 }
59 out:
60 if (fd >= 0)
61 close (fd);
62 g_free (text);
63 return ret;
64 }
65
66 static char *
67 get_led_sysfs_path (GUdevDevice *device,
68 int group_num)
69 {
70 char *status;
71 char *filename;
72
73 status = g_strdup_printf ("status_led%d_select", group_num);
74 filename = g_build_filename (g_udev_device_get_sysfs_path (device), "wacom_led", status, NULL);
75 g_free (status);
76
77 return filename;
78 }
79
80 static char *path = NULL;
81 static int group_num = -1;
82 static int led_num = -1;
83
84 const GOptionEntry options[] = {
85 { "path", '\0', 0, G_OPTION_ARG_FILENAME, &path, "Device path for the Wacom device", NULL },
86 { "group", '\0', 0, G_OPTION_ARG_INT, &group_num, "Which LED group to set", NULL },
87 { "led", '\0', 0, G_OPTION_ARG_INT, &led_num, "Which LED to set", NULL },
88 { NULL}
89 };
90
91
92 int main (int argc, char **argv)
93 {
94 GOptionContext *context;
95 GUdevClient *client;
96 GUdevDevice *device, *parent;
97 int uid, euid;
98 char *filename;
99 GError *error = NULL;
100 const char * const subsystems[] = { "input", NULL };
101
102 /* get calling process */
103 uid = getuid ();
104 euid = geteuid ();
105 if (uid != 0 || euid != 0) {
106 g_print ("This program can only be used by the root user\n");
107 return 1;
108 }
109
110 context = g_option_context_new (NULL);
111 g_option_context_set_summary (context, "Cinnamon Settings Daemon Digitizer LED Helper");
112 g_option_context_add_main_entries (context, options, NULL);
113 g_option_context_parse (context, &argc, &argv, NULL);
114
115 if (path == NULL ||
116 group_num < 0 ||
117 led_num < 0) {
118 char *txt;
119
120 txt = g_option_context_get_help (context, FALSE, NULL);
121 g_print ("%s", txt);
122 g_free (txt);
123
124 g_option_context_free (context);
125
126 return 1;
127 }
128 g_option_context_free (context);
129
130 client = g_udev_client_new (subsystems);
131 device = g_udev_client_query_by_device_file (client, path);
132 if (device == NULL) {
133 g_debug ("Could not find device '%s' in udev database", path);
134 goto bail;
135 }
136
137 if (g_udev_device_get_property_as_boolean (device, "ID_INPUT_TABLET") == FALSE &&
138 g_udev_device_get_property_as_boolean (device, "ID_INPUT_TOUCHPAD") == FALSE) {
139 g_debug ("Device '%s' is not a Wacom tablet", path);
140 goto bail;
141 }
142
143 if (g_strcmp0 (g_udev_device_get_property (device, "ID_BUS"), "usb") != 0) {
144 /* FIXME handle Bluetooth LEDs too */
145 g_debug ("Non-USB LEDs setting is not supported");
146 goto bail;
147 }
148
149 parent = g_udev_device_get_parent_with_subsystem (device, "usb", "usb_interface");
150 if (parent == NULL) {
151 g_debug ("Could not find parent USB device for '%s'", path);
152 goto bail;
153 }
154 g_object_unref (device);
155 device = parent;
156
157 filename = get_led_sysfs_path (device, group_num);
158 if (csd_wacom_led_helper_write (filename, led_num, &error) == FALSE) {
159 g_debug ("Could not set LED status for '%s': %s", path, error->message);
160 g_error_free (error);
161 g_free (filename);
162 goto bail;
163 }
164 g_free (filename);
165
166 g_debug ("Successfully set LED status for '%s', group %d to %d",
167 path, group_num, led_num);
168
169 g_object_unref (device);
170 g_object_unref (client);
171
172 return 0;
173
174 bail:
175 if (device != NULL)
176 g_object_unref (device);
177 if (client != NULL)
178 g_object_unref (client);
179 return 1;
180 }
+0
-48
plugins/wacom/csd-wacom-manager.c less more
544544 set_pressurethreshold (device, threshold);
545545 }
546546
547 static void
548 set_led (CsdWacomDevice *device,
549 CsdWacomTabletButton *button,
550 int index)
551 {
552 GError *error = NULL;
553 const char *path;
554 char *command;
555 gint status_led;
556 gboolean ret;
557
558 #ifndef HAVE_GUDEV
559 /* Not implemented on non-Linux systems */
560 return;
561 #endif
562 g_return_if_fail (index >= 1);
563
564 path = csd_wacom_device_get_path (device);
565 status_led = button->status_led;
566
567 if (status_led == CSD_WACOM_NO_LED) {
568 g_debug ("Ignoring unhandled group ID %d for device %s",
569 button->group_id, csd_wacom_device_get_name (device));
570 return;
571 }
572 g_debug ("Switching group ID %d to index %d for device %s", button->group_id, index, path);
573
574 command = g_strdup_printf ("pkexec " LIBEXECDIR "/csd-wacom-led-helper --path %s --group %d --led %d",
575 path, status_led, index - 1);
576 ret = g_spawn_command_line_sync (command,
577 NULL,
578 NULL,
579 NULL,
580 &error);
581
582 if (ret == FALSE) {
583 g_debug ("Failed to launch '%s': %s", command, error->message);
584 g_error_free (error);
585 }
586
587 g_free (command);
588 }
589
590547 struct DefaultButtons {
591548 const char *button;
592549 int num;
695652 buttons = csd_wacom_device_get_buttons (device);
696653 for (l = buttons; l != NULL; l = l->next) {
697654 CsdWacomTabletButton *button = l->data;
698 if (button->type == WACOM_TABLET_BUTTON_TYPE_HARDCODED &&
699 button->status_led != CSD_WACOM_NO_LED) {
700 set_led (device, button, 1);
701 }
702655 }
703656 g_list_free (buttons);
704657 }
12791232 csd_wacom_osd_window_set_mode (CSD_WACOM_OSD_WINDOW(manager->priv->osd_window), wbutton->group_id, new_mode);
12801233 osd_window_update_viewable (manager, wbutton, dir, xiev);
12811234 }
1282 set_led (device, wbutton, new_mode);
12831235 return GDK_FILTER_REMOVE;
12841236 }
12851237
+0
-20
plugins/wacom/meson.build less more
2020 'main.c',
2121 wacom_common_sources,
2222 wacom_resources,
23 ]
24
25 wacom_led_helper_sources = [
26 'csd-wacom-led-helper.c',
2723 ]
2824
2925 wacom_osd_sources = [
6359 meson.add_install_script(ln_script, libexecdir, bindir, 'csd-wacom')
6460 if libexecdir != pkglibdir
6561 meson.add_install_script(ln_script, libexecdir, pkglibdir, 'csd-wacom')
66 endif
67
68 if gudev.found()
69 executable(
70 'csd-wacom-led-helper',
71 wacom_led_helper_sources,
72 include_directories: [include_dirs, common_inc, include_enums],
73 dependencies: wacom_deps,
74 install: true,
75 install_dir: libexecdir,
76 )
77
78 meson.add_install_script(ln_script, libexecdir, bindir, 'csd-wacom-led-helper')
79 if libexecdir != pkglibdir
80 meson.add_install_script(ln_script, libexecdir, pkglibdir, 'csd-wacom-led-helper')
81 endif
8262 endif
8363
8464 executable(