misc/tst-preadvwritev2-common.c

   1 /* Common function for preadv2 and pwritev2 tests.
   2    Copyright (C) 2017 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <support/check.h>
  20
  21 static void
  22 do_test_with_invalid_flags (void)
  23 {
  24   int invalid_flag = 0x1;
  25 #ifdef RWF_HIPRI
  26   invalid_flag <<= 1;
  27 #endif
  28 #ifdef RWF_DSYNC
  29   invalid_flag <<= 1;
  30 #endif
  31 #ifdef RWF_SYNC
  32   invalid_flag <<= 1;
  33 #endif
  34
  35   char buf[32];
  36   const struct iovec vec = { .iov_base = buf, .iov_len = sizeof (buf) };
  37   if (preadv2 (temp_fd, &vec, 1, 0, invalid_flag) != -1)
  38     FAIL_EXIT1 ("preadv2 did not fail with an invalid flag");
  39   if (errno != ENOTSUP)
  40     FAIL_EXIT1 ("preadv2 failure did not set errno to ENOTSUP (%d)", errno);
  41
  42   /* This might fail for compat syscall (32 bits running on 64 bits kernel)
  43      due a kernel issue.  */
  44   if (pwritev2 (temp_fd, &vec, 1, 0, invalid_flag) != -1)
  45     FAIL_EXIT1 ("pwritev2 did not fail with an invalid flag");
  46   if (errno != ENOTSUP)
  47     FAIL_EXIT1 ("pwritev2 failure did not set errno to ENOTSUP (%d)", errno);
  48 }