1 /* Check IOV_MAX definition for consistency (bug 22321). 2 Copyright (C) 2017-2022 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 <https://www.gnu.org/licenses/>. */ 18 19 /* Defined in tst-sysconf-iov_max-uapi.c. */ 20 long uio_maxiov_value (void); 21 22 23 #include <limits.h> 24 #include <support/check.h> 25 #include <sys/uio.h> 26 #include <unistd.h> 27 28 static int do_test(void)29do_test (void) 30 { 31 TEST_VERIFY (_XOPEN_IOV_MAX == 16); /* Value required by POSIX. */ 32 TEST_VERIFY (uio_maxiov_value () >= _XOPEN_IOV_MAX); 33 TEST_VERIFY (IOV_MAX == uio_maxiov_value ()); 34 TEST_VERIFY (UIO_MAXIOV == uio_maxiov_value ()); 35 TEST_VERIFY (sysconf (_SC_UIO_MAXIOV) == uio_maxiov_value ()); 36 TEST_VERIFY (sysconf (_SC_IOV_MAX) == uio_maxiov_value ()); 37 return 0; 38 } 39 40 #include <support/test-driver.c> 41