/* Test duplicating file descriptors.
- Copyright (C) 2009-2012 Free Software Foundation, Inc.
+ Copyright (C) 2009-2013 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
main ()
{
int use_cloexec;
+ int bad_fd = getdtablesize ();
#if O_CLOEXEC
for (use_cloexec = 0; use_cloexec <= 1; use_cloexec++)
errno = 0;
ASSERT (dup3 (fd, -2, o_flags) == -1);
ASSERT (errno == EBADF);
+ if (bad_fd > 256)
+ {
+ ASSERT (dup3 (fd, 255, 0) == 255);
+ ASSERT (dup3 (fd, 256, 0) == 256);
+ ASSERT (close (255) == 0);
+ ASSERT (close (256) == 0);
+ }
+ ASSERT (dup3 (fd, bad_fd - 1, 0) == bad_fd - 1);
+ ASSERT (close (bad_fd - 1) == 0);
errno = 0;
- ASSERT (dup3 (fd, 10000000, o_flags) == -1);
+ ASSERT (dup3 (fd, bad_fd, o_flags) == -1);
ASSERT (errno == EBADF);
/* Using dup3 can skip fds. */