1 /*- 2 * SPDX-License-Identifier: MIT 3 * 4 * Copyright (c) 2005-2020 Rich Felker, et al. 5 * Copyright (c) 2020 Val Packett 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining 8 * a copy of this software and associated documentation files (the 9 * "Software"), to deal in the Software without restriction, including 10 * without limitation the rights to use, copy, modify, merge, publish, 11 * distribute, sublicense, and/or sell copies of the Software, and to 12 * permit persons to whom the Software is furnished to do so, subject to 13 * the following conditions: 14 * 15 * The above copyright notice and this permission notice shall be 16 * included in all copies or substantial portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 21 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 22 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 25 */ 26 27 #include <sys/cdefs.h> 28 #include "namespace.h" 29 #include <sys/eventfd.h> 30 #include <sys/specialfd.h> 31 #include <unistd.h> 32 #include "un-namespace.h" 33 #include "libc_private.h" 34 35 int eventfd(unsigned int initval, int flags) 36 { 37 struct specialfd_eventfd args; 38 39 args.initval = initval; 40 args.flags = flags; 41 return (__sys___specialfd(SPECIALFD_EVENTFD, &args, sizeof(args))); 42 } 43 44 int eventfd_read(int fd, eventfd_t *value) 45 { 46 return (sizeof(*value) == _read(fd, value, sizeof(*value)) ? 0 : -1); 47 } 48 49 int eventfd_write(int fd, eventfd_t value) 50 { 51 return (sizeof(value) == _write(fd, &value, sizeof(value)) ? 0 : -1); 52 } 53