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https://github.com/CTCaer/RetroArch.git
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95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2016 - Daniel De Matteis
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <sys/poll.h>
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#include "udev_common.h"
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static bool udev_mon_inited;
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static bool udev_mon_first_inited_is_joypad;
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static struct udev_monitor *g_udev_mon;
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static struct udev *g_udev;
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bool udev_mon_new(bool is_joypad)
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{
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if (udev_mon_inited)
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return true;
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udev_mon_first_inited_is_joypad = is_joypad;
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g_udev = udev_new();
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if (!g_udev)
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return false;
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g_udev_mon = udev_monitor_new_from_netlink(g_udev, "udev");
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if (g_udev_mon)
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{
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udev_monitor_filter_add_match_subsystem_devtype(g_udev_mon, "input", NULL);
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udev_monitor_enable_receiving(g_udev_mon);
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}
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udev_mon_inited = true;
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return true;
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}
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void udev_mon_free(bool is_joypad)
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{
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if (!udev_mon_inited || (is_joypad && !udev_mon_first_inited_is_joypad))
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return;
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if (g_udev_mon)
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udev_monitor_unref(g_udev_mon);
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if (g_udev)
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udev_unref(g_udev);
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g_udev_mon = NULL;
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g_udev = NULL;
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udev_mon_inited = false;
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udev_mon_first_inited_is_joypad = false;
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}
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bool udev_mon_hotplug_available(void)
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{
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struct pollfd fds = {0};
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if (!g_udev_mon)
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return false;
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fds.fd = udev_monitor_get_fd(g_udev_mon);
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fds.events = POLLIN;
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return (poll(&fds, 1, 0) == 1) && (fds.revents & POLLIN);
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}
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struct udev_device *udev_mon_receive_device(void)
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{
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return udev_monitor_receive_device(g_udev_mon);
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}
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struct udev_enumerate *udev_mon_enumerate(void)
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{
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return udev_enumerate_new(g_udev);
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}
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/* Get the filename of the /sys entry for the device
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* and create a udev_device object (dev) representing it. */
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struct udev_device *udev_mon_device_new(const char *name)
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{
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return udev_device_new_from_syspath(g_udev, name);
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}
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