416 lines
12 KiB
C
416 lines
12 KiB
C
#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <Eeze.h>
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#include "eeze_private.h"
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#include "eeze_udev_private.h"
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extern _udev *udev;
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/* opaque */
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struct Eeze_Udev_Watch
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{
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_udev_monitor *mon;
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Ecore_Fd_Handler *handler;
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Eeze_Udev_Type type;
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};
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/* private */
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struct _store_data
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{
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void (*func)(const char *, int, void *, Eeze_Udev_Watch *);
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void *data;
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int event;
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_udev_monitor *mon;
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Eeze_Udev_Type type;
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Eeze_Udev_Watch *watch;
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};
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/**
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* @defgroup watch Watch
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*
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* @brief These are functions which monitor udev for events.
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*
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* Eeze watches are simple: you specify a type of device to watch (or all devices), some events (or all) to watch for, a callback,
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* and some data, and then udev watches those device types for events of the type you specified. Your callback is called with a
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* syspath of the triggering device and the event that happened to the device, along with the data you associated with the watch and
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* the watch object itself in case you want to stop the watch easily in a callback.
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*
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* @ingroup udev
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*/
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/* private function to further filter watch results based on Eeze_Udev_Type
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* specified; helpful for new udev versions, but absolutely required for
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* old udev, which does not implement filtering in device monitors.
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*/
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static Eina_Bool
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_get_syspath_from_watch(void *data, Ecore_Fd_Handler * fd_handler)
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{
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struct _store_data *store = data;
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_udev_device *device, *parent, *tmpdev;
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const char *ret, *test;
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void (*func)(const char *, int, void *, Eeze_Udev_Watch *) = store->func;
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void *sdata = store->data;
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Eeze_Udev_Watch *watch = store->watch;
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int cap = 0, event = 0;
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if (!ecore_main_fd_handler_active_get(fd_handler, ECORE_FD_READ))
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return EINA_TRUE;
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device = udev_monitor_receive_device(store->mon);
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if (!device)
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return EINA_TRUE;
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switch (store->type)
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{
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case EEZE_UDEV_TYPE_KEYBOARD:
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#ifdef OLD_UDEV_RRRRRRRRRRRRRR
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if ((!(test = udev_device_get_subsystem(device)))
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|| (strcmp(test, "input")))
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goto error;
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test = udev_device_get_property_value(device, "ID_CLASS");
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if ((_walk_parents_test_attr(device, "bInterfaceProtocol", "01"))
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|| ((test) && (!strcmp(test, "kbd"))))
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break;
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goto error;
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#endif
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if ((!udev_device_get_property_value(device, "ID_INPUT_KEYBOARD")) &&
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(!udev_device_get_property_value(device, "ID_INPUT_KEY")))
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goto error;
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break;
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case EEZE_UDEV_TYPE_MOUSE:
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#ifdef OLD_UDEV_RRRRRRRRRRRRRR
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if ((!(test = udev_device_get_subsystem(device)))
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|| (strcmp(test, "input")))
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goto error;
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test = udev_device_get_property_value(device, "ID_CLASS");
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if ((_walk_parents_test_attr(device, "bInterfaceProtocol", "02"))
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|| ((test) && (!strcmp(test, "mouse"))))
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break;
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goto error;
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#endif
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if (!udev_device_get_property_value(device, "ID_INPUT_MOUSE"))
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goto error;
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break;
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case EEZE_UDEV_TYPE_TOUCHPAD:
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#ifdef OLD_UDEV_RRRRRRRRRRRRRR
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if ((!(test = udev_device_get_subsystem(device)))
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|| (strcmp(test, "input")))
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goto error;
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if (_walk_parents_test_attr(device, "resolution", NULL))
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break;
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goto error;
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#endif
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if (!udev_device_get_property_value(device, "ID_INPUT_TOUCHPAD"))
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goto error;
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break;
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case EEZE_UDEV_TYPE_DRIVE_MOUNTABLE:
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#ifdef OLD_UDEV_RRRRRRRRRRRRRR
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if ((!(test = udev_device_get_subsystem(device)))
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|| (strcmp(test, "block")))
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goto error;
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#endif
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test = udev_device_get_sysattr_value(device, "capability");
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if (test)
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cap = atoi(test);
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if (!(test = (udev_device_get_property_value(device, "ID_FS_USAGE"))) ||
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(strcmp("filesystem", test)) || (cap == 52))
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goto error;
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break;
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case EEZE_UDEV_TYPE_DRIVE_INTERNAL:
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#ifdef OLD_UDEV_RRRRRRRRRRRRRR
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if ((!(test = udev_device_get_subsystem(device)))
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|| (strcmp(test, "block")))
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goto error;
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#endif
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if (!(test = udev_device_get_property_value(device, "ID_BUS"))
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|| (strcmp("ata", test))
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|| !(test = udev_device_get_sysattr_value(device, "removable"))
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|| (atoi(test)))
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goto error;
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break;
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case EEZE_UDEV_TYPE_DRIVE_REMOVABLE:
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#ifdef OLD_UDEV_RRRRRRRRRRRRRR
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if ((!(test = udev_device_get_subsystem(device)))
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|| (strcmp(test, "block")))
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goto error;
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#endif
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if ((!(test = udev_device_get_sysattr_value(device, "removable"))
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|| (!atoi(test)))
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&& (!(test = udev_device_get_sysattr_value(device, "capability"))
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|| (atoi(test) != 10)))
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goto error;
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break;
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case EEZE_UDEV_TYPE_DRIVE_CDROM:
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#ifdef OLD_UDEV_RRRRRRRRRRRRRR
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if ((!(test = udev_device_get_subsystem(device)))
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|| (strcmp(test, "block")))
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goto error;
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#endif
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if (!udev_device_get_property_value(device, "ID_CDROM"))
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goto error;
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break;
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case EEZE_UDEV_TYPE_POWER_AC:
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#ifdef OLD_UDEV_RRRRRRRRRRRRRR
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if ((!(test = udev_device_get_subsystem(device)))
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|| (strcmp(test, "power_supply")))
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goto error;
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#endif
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if (!(test = udev_device_get_property_value(device, "POWER_SUPPLY_TYPE"))
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|| (strcmp("Mains", test)))
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goto error;
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break;
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case EEZE_UDEV_TYPE_POWER_BAT:
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#ifdef OLD_UDEV_RRRRRRRRRRRRRR
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if ((!(test = udev_device_get_subsystem(device)))
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|| (strcmp(test, "power_supply")))
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goto error;
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#endif
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if (!(test = udev_device_get_property_value(device, "POWER_SUPPLY_TYPE"))
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|| (strcmp("Battery", test)))
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goto error;
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break;
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case EEZE_UDEV_TYPE_IS_IT_HOT_OR_IS_IT_COLD_SENSOR:
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#ifdef OLD_UDEV_RRRRRRRRRRRRRR
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if ((!(test = udev_device_get_subsystem(device)))
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|| (strcmp(test, "hwmon")))
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goto error;
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#endif /* have to do stuff up here since we need info from the parent */
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if (!_walk_parents_test_attr(device, "temp1_input", NULL))
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goto error;
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/* if device is not the one which has the temp input, we must go up the chain */
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if (!(test = udev_device_get_sysattr_value(device, "temp1_input")))
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{
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for (parent = udev_device_get_parent(device); parent; parent = udev_device_get_parent(parent)) /*check for parent */
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if (((test =
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udev_device_get_sysattr_value(parent, "temp1_input"))))
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{
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tmpdev = device;
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if (!(device = _copy_device(parent)))
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goto error;
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udev_device_unref(tmpdev);
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break;
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}
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}
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break;
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default:
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break;
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}
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if ((!(test = udev_device_get_action(device)))
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|| (!(ret = udev_device_get_syspath(device))))
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goto error;
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if (store->event)
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{
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if (!strcmp(test, "add"))
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{
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if ((store->event & EEZE_UDEV_EVENT_ADD) != EEZE_UDEV_EVENT_ADD)
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goto error;
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event |= EEZE_UDEV_EVENT_ADD;
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}
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else
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if (!strcmp(test, "remove"))
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{
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if ((store->event & EEZE_UDEV_EVENT_REMOVE) !=
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EEZE_UDEV_EVENT_REMOVE)
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goto error;
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event |= EEZE_UDEV_EVENT_REMOVE;
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}
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else
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if (!strcmp(test, "change"))
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{
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if ((store->event & EEZE_UDEV_EVENT_CHANGE) !=
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EEZE_UDEV_EVENT_CHANGE)
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goto error;
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event |= EEZE_UDEV_EVENT_CHANGE;
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}
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else
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if (!strcmp(test, "online"))
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{
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if ((store->event & EEZE_UDEV_EVENT_ONLINE) !=
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EEZE_UDEV_EVENT_ONLINE)
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goto error;
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event |= EEZE_UDEV_EVENT_ONLINE;
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}
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else
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{
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if ((store->event & EEZE_UDEV_EVENT_OFFLINE) !=
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EEZE_UDEV_EVENT_OFFLINE)
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goto error;
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event |= EEZE_UDEV_EVENT_OFFLINE;
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}
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}
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(*func)(eina_stringshare_add(ret), event, sdata, watch);
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error:
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udev_device_unref(device);
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return EINA_TRUE;
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}
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/**
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* Add a watch for a device type
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*
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* @param type The @ref Eeze_Udev_Type to watch
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* @param event The events to watch; an OR list of @ref event (ie (EEZE_UDEV_EVENT_ADD | EEZE_UDEV_EVENT_REMOVE)), or 0 for all events
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* @param func The function to call when the watch receives data;
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* must take (const char *device, int event_type, void *data, Eeze_Udev_Watch *watch)
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* @param user_data Data to pass to the callback function
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*
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* @return A watch struct for the watch type specified, or NULL on failure
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*
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* Eeze watches will monitor udev for changes of type(s) @p event to devices of type @p type. When these changes occur, the stringshared
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* syspath of the device will be sent to function @p func, along with the bitmask of the event type which can be detected through
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* binary &.
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*
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* @ingroup watch
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*/
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EAPI Eeze_Udev_Watch *
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eeze_udev_watch_add(Eeze_Udev_Type type, int event,
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void (*func)(const char *syspath, int event, void *data,
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Eeze_Udev_Watch * watch), void *user_data)
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{
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_udev_monitor *mon = NULL;
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int fd;
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Ecore_Fd_Handler *handler;
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Eeze_Udev_Watch *watch;
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struct _store_data *store;
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if (!(store = calloc(sizeof(struct _store_data), 1)))
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return NULL;
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if (!(watch = malloc(sizeof(Eeze_Udev_Watch))))
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goto error;
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if (!(mon = udev_monitor_new_from_netlink(udev, "udev")))
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goto error;
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#ifndef OLD_UDEV_RRRRRRRRRRRRRR
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switch (type)
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{
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case EEZE_UDEV_TYPE_KEYBOARD:
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udev_monitor_filter_add_match_subsystem_devtype(mon, "input", NULL);
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break;
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case EEZE_UDEV_TYPE_MOUSE:
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udev_monitor_filter_add_match_subsystem_devtype(mon, "input", NULL);
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break;
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case EEZE_UDEV_TYPE_TOUCHPAD:
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udev_monitor_filter_add_match_subsystem_devtype(mon, "input", NULL);
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break;
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case EEZE_UDEV_TYPE_DRIVE_MOUNTABLE:
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udev_monitor_filter_add_match_subsystem_devtype(mon, "block", NULL);
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break;
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case EEZE_UDEV_TYPE_DRIVE_INTERNAL:
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udev_monitor_filter_add_match_subsystem_devtype(mon, "block", NULL);
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break;
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case EEZE_UDEV_TYPE_DRIVE_REMOVABLE:
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udev_monitor_filter_add_match_subsystem_devtype(mon, "block", NULL);
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break;
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case EEZE_UDEV_TYPE_DRIVE_CDROM:
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udev_monitor_filter_add_match_subsystem_devtype(mon, "block", NULL);
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break;
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case EEZE_UDEV_TYPE_POWER_AC:
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case EEZE_UDEV_TYPE_POWER_BAT:
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udev_monitor_filter_add_match_subsystem_devtype(mon, "power_supply",
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NULL);
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break;
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case EEZE_UDEV_TYPE_IS_IT_HOT_OR_IS_IT_COLD_SENSOR:
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udev_monitor_filter_add_match_subsystem_devtype(mon, "hwmon", NULL);
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break;
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/*
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case EEZE_UDEV_TYPE_ANDROID:
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udev_monitor_filter_add_match_subsystem_devtype(mon, "input", "usb_interface");
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break;
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*/
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default:
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break;
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}
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#endif
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if (udev_monitor_enable_receiving(mon))
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goto error;
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fd = udev_monitor_get_fd(mon);
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store->func = func;
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store->data = user_data;
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store->mon = mon;
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store->type = type;
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store->watch = watch;
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store->event = event;
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if (!(handler = ecore_main_fd_handler_add(fd, ECORE_FD_READ,
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_get_syspath_from_watch, store, NULL, NULL)))
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goto error;
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watch->mon = mon;
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watch->handler = handler;
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return watch;
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error:
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free(store);
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free(watch);
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udev_monitor_unref(mon);
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return NULL;
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}
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/**
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* Deletes a watch.
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*
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* @param watch An Eeze_Udev_Watch object
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* @return The data originally associated with the watch, or NULL
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*
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* Deletes a watch, closing file descriptors and freeing related udev memory.
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*
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* @ingroup watch
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*/
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EAPI void *
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eeze_udev_watch_del(Eeze_Udev_Watch * watch)
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{
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struct _store_data *sdata;
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void *ret = NULL;
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if ((!watch) || (!watch->mon) || (!watch->handler))
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return NULL;
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udev_monitor_unref(watch->mon);
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sdata = ecore_main_fd_handler_del(watch->handler);
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if (sdata)
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{
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ret = sdata->data;
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free(sdata);
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}
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free(watch);
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return ret;
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}
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