1 /*-
2 * SPDX-License-Identifier: MIT
3 *
4 * Copyright (c) 2005-2020 Rich Felker, et al.
5 * Copyright (c) 2020 Greg V
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
eventfd(unsigned int initval,int flags)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
eventfd_read(int fd,eventfd_t * value)44 int eventfd_read(int fd, eventfd_t *value)
45 {
46 return (sizeof(*value) == _read(fd, value, sizeof(*value)) ? 0 : -1);
47 }
48
eventfd_write(int fd,eventfd_t value)49 int eventfd_write(int fd, eventfd_t value)
50 {
51 return (sizeof(value) == _write(fd, &value, sizeof(value)) ? 0 : -1);
52 }
53