diff options
Diffstat (limited to 'xserver/config/udev.c')
| -rw-r--r-- | xserver/config/udev.c | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/xserver/config/udev.c b/xserver/config/udev.c new file mode 100644 index 000000000..452fb5a8d --- /dev/null +++ b/xserver/config/udev.c @@ -0,0 +1,267 @@ +/* + * Copyright © 2009 Julien Cristau + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + * Author: Julien Cristau <jcristau@debian.org> + */ + +#ifdef HAVE_DIX_CONFIG_H +#include <dix-config.h> +#endif + +#include <libudev.h> + +#include "input.h" +#include "inputstr.h" +#include "hotplug.h" +#include "config-backends.h" +#include "os.h" + +#define UDEV_XKB_PROP_KEY "xkb" + +static struct udev_monitor *udev_monitor; + +static void +device_added(struct udev_device *udev_device) +{ + const char *path, *name = NULL; + char *config_info = NULL; + const char *syspath; + const char *key, *value, *tmp; + InputOption *options = NULL, *tmpo; + InputAttributes attrs = {}; + DeviceIntPtr dev = NULL; + struct udev_list_entry *set, *entry; + struct udev_device *parent; + int rc; + + path = udev_device_get_devnode(udev_device); + + syspath = udev_device_get_syspath(udev_device); + + if (!path || !syspath) + return; + + if (!udev_device_get_property_value(udev_device, "ID_INPUT")) + return; + + options = xcalloc(sizeof(*options), 1); + if (!options) + return; + + options->key = xstrdup("_source"); + options->value = xstrdup("server/udev"); + if (!options->key || !options->value) + goto unwind; + + parent = udev_device_get_parent(udev_device); + if (parent) { + name = udev_device_get_sysattr_value(parent, "name"); + if (!name) + name = udev_device_get_property_value(parent, "NAME"); + } + if (!name) + name = "(unnamed)"; + else + attrs.product = name; + add_option(&options, "name", name); + + add_option(&options, "path", path); + add_option(&options, "device", path); + attrs.device = path; + attrs.tags = xstrtokenize(udev_device_get_property_value(udev_device, "ID_INPUT.tags"), ","); + + config_info = Xprintf("udev:%s", syspath); + if (!config_info) + goto unwind; + + if (device_is_duplicate(config_info)) { + LogMessage(X_WARNING, "config/udev: device %s already added. " + "Ignoring.\n", name); + goto unwind; + } + + set = udev_device_get_properties_list_entry(udev_device); + udev_list_entry_foreach(entry, set) { + key = udev_list_entry_get_name(entry); + if (!key) + continue; + value = udev_list_entry_get_value(entry); + if (!strncasecmp(key, UDEV_XKB_PROP_KEY, + sizeof(UDEV_XKB_PROP_KEY) - 1)) { + tmp = key + sizeof(UDEV_XKB_PROP_KEY) - 1; + if (!strcasecmp(tmp, "rules")) + add_option(&options, "xkb_rules", value); + else if (!strcasecmp(tmp, "layout")) + add_option(&options, "xkb_layout", value); + else if (!strcasecmp(tmp, "variant")) + add_option(&options, "xkb_variant", value); + else if (!strcasecmp(tmp, "model")) + add_option(&options, "xkb_model", value); + else if (!strcasecmp(tmp, "options")) + add_option(&options, "xkb_options", value); + } else if (!strcmp(key, "ID_VENDOR")) { + attrs.vendor = value; + } else if (!strcmp(key, "ID_INPUT_KEY")) { + attrs.flags |= ATTR_KEYBOARD; + } else if (!strcmp(key, "ID_INPUT_MOUSE")) { + attrs.flags |= ATTR_POINTER; + } else if (!strcmp(key, "ID_INPUT_JOYSTICK")) { + attrs.flags |= ATTR_JOYSTICK; + } else if (!strcmp(key, "ID_INPUT_TABLET")) { + attrs.flags |= ATTR_TABLET; + } else if (!strcmp(key, "ID_INPUT_TOUCHPAD")) { + attrs.flags |= ATTR_TOUCHPAD; + } else if (!strcmp(key, "ID_INPUT_TOUCHSCREEN")) { + attrs.flags |= ATTR_TOUCHSCREEN; + } + } + LogMessage(X_INFO, "config/udev: Adding input device %s (%s)\n", + name, path); + rc = NewInputDeviceRequest(options, &attrs, &dev); + if (rc != Success) + goto unwind; + + for (; dev; dev = dev->next) { + xfree(dev->config_info); + dev->config_info = xstrdup(config_info); + } + + unwind: + xfree(config_info); + while (!dev && (tmpo = options)) { + options = tmpo->next; + xfree(tmpo->key); + xfree(tmpo->value); + xfree(tmpo); + } + + if (attrs.tags) { + char **tag = attrs.tags; + while (*tag) { + xfree(*tag); + tag++; + } + xfree(attrs.tags); + } + + return; +} + +static void +device_removed(struct udev_device *device) +{ + char *value; + const char *syspath = udev_device_get_syspath(device); + + value = Xprintf("udev:%s", syspath); + if (!value) + return; + + remove_devices("udev", value); + + xfree(value); +} + +static void +wakeup_handler(pointer data, int err, pointer read_mask) +{ + int udev_fd = udev_monitor_get_fd(udev_monitor); + struct udev_device *udev_device; + const char *action; + + if (err < 0) + return; + + if (FD_ISSET(udev_fd, (fd_set *)read_mask)) { + udev_device = udev_monitor_receive_device(udev_monitor); + if (!udev_device) + return; + action = udev_device_get_action(udev_device); + if (action) { + if (!strcmp(action, "add")) + device_added(udev_device); + else if (!strcmp(action, "remove")) + device_removed(udev_device); + } + udev_device_unref(udev_device); + } +} + +static void +block_handler(pointer data, struct timeval **tv, pointer read_mask) +{ +} + +int +config_udev_init(void) +{ + struct udev *udev; + struct udev_enumerate *enumerate; + struct udev_list_entry *devices, *device; + + udev = udev_new(); + if (!udev) + return 0; + udev_monitor = udev_monitor_new_from_netlink(udev, "udev"); + if (!udev_monitor) + return 0; + + if (udev_monitor_enable_receiving(udev_monitor)) { + ErrorF("config/udev: failed to bind the udev monitor\n"); + return 0; + } + + enumerate = udev_enumerate_new(udev); + if (!enumerate) + return 0; + udev_enumerate_scan_devices(enumerate); + devices = udev_enumerate_get_list_entry(enumerate); + udev_list_entry_foreach(device, devices) { + const char *syspath = udev_list_entry_get_name(device); + struct udev_device *udev_device = udev_device_new_from_syspath(udev, syspath); + device_added(udev_device); + udev_device_unref(udev_device); + } + udev_enumerate_unref(enumerate); + + RegisterBlockAndWakeupHandlers(block_handler, wakeup_handler, NULL); + AddGeneralSocket(udev_monitor_get_fd(udev_monitor)); + + return 1; +} + +void +config_udev_fini(void) +{ + struct udev *udev; + + if (!udev_monitor) + return; + + udev = udev_monitor_get_udev(udev_monitor); + + RemoveGeneralSocket(udev_monitor_get_fd(udev_monitor)); + RemoveBlockAndWakeupHandlers(block_handler, wakeup_handler, udev_monitor); + udev_monitor_unref(udev_monitor); + udev_monitor = NULL; + udev_unref(udev); +} |