granicus.if.org Git - strace/blob - tests/epoll_ctl.c

   1 #include "tests.h"
   2 #include <sys/syscall.h>
   3
   4 #if defined __NR_epoll_ctl && defined HAVE_SYS_EPOLL_H
   5
   6 # include <errno.h>
   7 # include <inttypes.h>
   8 # include <stdio.h>
   9 # include <sys/epoll.h>
  10 # include <unistd.h>
  11
  12 int
  13 main(void)
  14 {
  15         struct epoll_event *const ev = tail_alloc(sizeof(*ev));
  16         ev->events = EPOLLIN;
  17
  18         int rc = syscall(__NR_epoll_ctl, -1, EPOLL_CTL_ADD, -2, ev);
  19         printf("epoll_ctl(-1, EPOLL_CTL_ADD, -2, {EPOLLIN,"
  20                " {u32=%u, u64=%" PRIu64 "}}) = %d %s (%m)\n",
  21                ev->data.u32, ev->data.u64, rc,
  22                errno == ENOSYS ? "ENOSYS" : "EBADF");
  23
  24         puts("+++ exited with 0 +++");
  25         return 0;
  26 }
  27
  28 #else
  29
  30 SKIP_MAIN_UNDEFINED("__NR_epoll_ctl && HAVE_SYS_EPOLL_H")
  31
  32 #endif