#include <sys/epoll.h>
#include <signal.h>
#include <errno.h>
#include "syscall.h"

int epoll_create(int size) {
  return epoll_create1(0);
}

int epoll_create1(int flags) {
  int r = __syscall(SYS_epoll_create1, flags);
#ifdef SYS_epoll_create
  if (r == -ENOSYS && !flags)
    r = __syscall(SYS_epoll_create, 1);
#endif
  return __syscall_ret(r);
}

int epoll_ctl(int fd, int op, int fd2, struct epoll_event* ev) {
  return syscall(SYS_epoll_ctl, fd, op, fd2, ev);
}

int epoll_pwait(int fd,
                struct epoll_event* ev,
                int cnt,
                int to,
                const sigset_t* sigs) {
  int r = __syscall(SYS_epoll_pwait, fd, ev, cnt, to, sigs, _NSIG / 8);
#ifdef SYS_epoll_wait
  if (r == -ENOSYS && !sigs)
    r = __syscall(SYS_epoll_wait, fd, ev, cnt, to);
#endif
  return __syscall_ret(r);
}

int epoll_wait(int fd, struct epoll_event* ev, int cnt, int to) {
  return epoll_pwait(fd, ev, cnt, to, 0);
}