diff options
Diffstat (limited to 'misc/tst-ioctl.c')
| -rw-r--r-- | misc/tst-ioctl.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/misc/tst-ioctl.c b/misc/tst-ioctl.c new file mode 100644 index 0000000000..a09b8ae836 --- /dev/null +++ b/misc/tst-ioctl.c @@ -0,0 +1,41 @@ +/* Smoke test for ioctl. + Copyright (C) 2021 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <support/check.h> +#include <support/xunistd.h> +#include <sys/ioctl.h> +#include <sys/socket.h> + +static int +do_test (void) +{ + int pair[2]; + TEST_COMPARE (socketpair (AF_UNIX, SOCK_STREAM, 0, pair), 0); + TEST_COMPARE (write (pair[0], "buffer", sizeof ("buffer")), + sizeof ("buffer")); + int value; + TEST_COMPARE (ioctl (pair[1], FIONREAD, &value), 0); + TEST_COMPARE (value, sizeof ("buffer")); + TEST_COMPARE (ioctl (pair[0], FIONREAD, &value), 0); + TEST_COMPARE (value, 0); + xclose (pair[0]); + xclose (pair[1]); + return 0; +} + +#include <support/test-driver.c> |