315 lines
9.5 KiB
C
315 lines
9.5 KiB
C
#include "eeze_udev_private.h"
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#include <Eeze_Udev.h>
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/* opaque */
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struct Eeze_Udev_Watch
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{
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struct 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 *, const char *, void *, Eeze_Udev_Watch *);
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void *data;
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struct 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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/* private function to simulate udevadm info -a
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* walks up the device tree checking each node for sysattr
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* with value value
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*/
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static Eina_Bool
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_walk_parents_for_attr(struct udev_device *device, const char *sysattr, const char* value)
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{
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struct udev_device *parent, *child = device;
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const char *test;
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while ((parent = udev_device_get_parent(child)))
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{
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if (!(test = udev_device_get_sysattr_value(parent, sysattr)))
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continue;
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if (!value)
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return 1;
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else if (!strcmp(test, value))
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return 1;
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}
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return 0;
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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
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*/
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static int
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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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struct udev_device *device;
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const char *ret, *test;
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void(*func)(const char *, const char *, 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;
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if (!ecore_main_fd_handler_active_get(fd_handler, ECORE_FD_READ))
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return 1;
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device = udev_monitor_receive_device(store->mon);
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if (!device) return 1;
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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))) || (strcmp(test, "input")))
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goto error;
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if (_walk_parents_for_attr(device, "bInterfaceProtocol", "01"))
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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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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))) || (strcmp(test, "input")))
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goto error;
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if (_walk_parents_for_attr(device, "bInterfaceProtocol", "02"))
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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))) || (strcmp(test, "input")))
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goto error;
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if (_walk_parents_for_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))) || (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) 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))) || (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")) || (strcmp("ata", test)) ||
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!(test = udev_device_get_sysattr_value(device, "removable")) || (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))) || (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")) || (!atoi(test))) &&
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(!(test = udev_device_get_sysattr_value(device, "capability")) || (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))) || (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))) || (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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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))) || (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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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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test = eina_stringshare_add(udev_device_get_action(device));
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if (!test)
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{
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udev_device_unref(device);
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return 1;
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}
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ret = eina_stringshare_add(udev_device_get_syspath(device));
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if (!ret)
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{
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udev_device_unref(device);
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eina_stringshare_del(test);
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return 1;
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}
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udev_device_unref(device);
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(*func)(ret, test, sdata, watch);
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eina_stringshare_del(test);
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eina_stringshare_del(ret);
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return 1;
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error:
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udev_device_unref(device);
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return 1;
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}
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/**
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* Add a watch in a subsystem for a device type
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*
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* @param subsystem The subsystem type. See @ref Subsystem_Types
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* @param device_type The device type. See @ref Device_Types
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* @param func The function to call when the watch receives data;
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* must take (const char *device, const char *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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* @ingroup udev
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*/
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EAPI Eeze_Udev_Watch *
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eeze_udev_watch_add(Eeze_Udev_Type type, void(*func)(const char *, const char *, void *, Eeze_Udev_Watch *), void *user_data)
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{
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struct udev *udev;
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struct udev_monitor *mon;
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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 = malloc(sizeof(struct _store_data)))) return NULL;
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if (!(watch = malloc(sizeof(Eeze_Udev_Watch))))
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goto error;
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if (!(udev = udev_new()))
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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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udev_monitor_filter_add_match_subsystem_devtype(mon, "power_supply", NULL);
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break;
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case EEZE_UDEV_TYPE_POWER_BAT:
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udev_monitor_filter_add_match_subsystem_devtype(mon, "power_supply", 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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if (!(handler = ecore_main_fd_handler_add(fd, ECORE_FD_READ, _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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udev_unref(udev);
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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 udev
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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 udev *udev;
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struct udev_monitor *mon = watch->mon;
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Ecore_Fd_Handler *handler = watch->handler;
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struct _store_data *sdata;
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void *ret;
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if ((!watch) || (!mon) || (!handler)) return NULL;
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udev = udev_monitor_get_udev(mon);
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udev_monitor_unref(mon);
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udev_unref(udev);
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sdata = ecore_main_fd_handler_del(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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