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/* Common function for preadv2 and pwritev2 tests.
Copyright (C) 2017-2018 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
<http://www.gnu.org/licenses/>. */
#include <limits.h>
#include <support/check.h>
static void
do_test_with_invalid_flags (void)
{
#ifndef RWF_HIPRI
# define RWF_HIPRI 0
#endif
#ifndef RWF_DSYNC
# define RWF_DSYNC 0
#endif
#ifndef RWF_SYNC
# define RWF_SYNC 0
#endif
#ifndef RWF_NOWAIT
# define RWF_NOWAIT 0
#endif
#define RWF_SUPPORTED (RWF_HIPRI | RWF_DSYNC | RWF_SYNC | RWF_NOWAIT)
/* Set the next bit from the mask of all supported flags. */
int invalid_flag = RWF_SUPPORTED != 0 ? __builtin_clz (RWF_SUPPORTED) : 2;
invalid_flag = 0x1 << ((sizeof (int) * CHAR_BIT) - invalid_flag);
char buf[32];
const struct iovec vec = { .iov_base = buf, .iov_len = sizeof (buf) };
if (preadv2 (temp_fd, &vec, 1, 0, invalid_flag) != -1)
FAIL_EXIT1 ("preadv2 did not fail with an invalid flag");
if (errno != ENOTSUP)
FAIL_EXIT1 ("preadv2 failure did not set errno to ENOTSUP (%d)", errno);
/* This might fail for compat syscall (32 bits running on 64 bits kernel)
due a kernel issue. */
if (pwritev2 (temp_fd, &vec, 1, 0, invalid_flag) != -1)
FAIL_EXIT1 ("pwritev2 did not fail with an invalid flag");
if (errno != ENOTSUP)
FAIL_EXIT1 ("pwritev2 failure did not set errno to ENOTSUP (%d)", errno);
}
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