1#include <sys/eventfd.h>
2#include <unistd.h>
3#include <errno.h>
4#include "syscall.h"
5
6int eventfd(unsigned int count, int flags)
7{
8 int r = __syscall(SYS_eventfd2, count, flags);
9#ifdef SYS_eventfd
10 if (r==-ENOSYS && !flags) r = __syscall(SYS_eventfd, count);
11#endif
12 return __syscall_ret(r);
13}
14
15int eventfd_read(int fd, eventfd_t *value)
16{
17 return (sizeof(*value) == read(fd, value, sizeof(*value))) ? 0 : -1;
18}
19
20int eventfd_write(int fd, eventfd_t value)
21{
22 return (sizeof(value) == write(fd, &value, sizeof(value))) ? 0 : -1;
23}