1 /* 2 * Copyright (c) 2014-2016 Dmitry V. Levin <ldv (at) altlinux.org> 3 * Copyright (c) 2014-2017 The strace developers. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include "tests.h" 30 31 #if defined(HAVE_PREADV) && defined(HAVE_PWRITEV) 32 33 # include <fcntl.h> 34 # include <unistd.h> 35 # include <sys/uio.h> 36 # include <assert.h> 37 38 int 39 main(void) 40 { 41 const off_t offset = 0xdefaceddeadbeefLL; 42 char buf[4]; 43 struct iovec iov = { buf, sizeof(buf) }; 44 45 (void) close(0); 46 assert(open("/dev/zero", O_RDONLY) == 0); 47 assert(pread(0, buf, sizeof(buf), offset) == 4); 48 assert(preadv(0, &iov, 1, offset) == 4); 49 assert(!close(0)); 50 51 assert(open("/dev/null", O_WRONLY) == 0); 52 assert(pwrite(0, buf, sizeof(buf), offset) == 4); 53 assert(pwritev(0, &iov, 1, offset) == 4); 54 assert(!close(0)); 55 56 return 0; 57 } 58 59 #else 60 61 SKIP_MAIN_UNDEFINED("HAVE_PREADV && HAVE_PWRITEV") 62 63 #endif 64
