1d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes/* 2d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * Check decoding of non-NUL-terminated strings when len == -1. 3d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 4d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org> 577c3ff8e0644f1e120e4b2ebc7222150b0446f3bElliott Hughes * Copyright (c) 2016-2017 The strace developers. 6d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * All rights reserved. 7d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 8d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * Redistribution and use in source and binary forms, with or without 9d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * modification, are permitted provided that the following conditions 10d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * are met: 11d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 1. Redistributions of source code must retain the above copyright 12d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * notice, this list of conditions and the following disclaimer. 13d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 2. Redistributions in binary form must reproduce the above copyright 14d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * notice, this list of conditions and the following disclaimer in the 15d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * documentation and/or other materials provided with the distribution. 16d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 3. The name of the author may not be used to endorse or promote products 17d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * derived from this software without specific prior written permission. 18d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * 19d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes */ 30d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 31d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#include "tests.h" 32d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 33d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#include <stdio.h> 34d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#include <string.h> 35d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#include <unistd.h> 36d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes#include <sys/uio.h> 37d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 38d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughesint 39d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughesmain(void) 40d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes{ 41d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes char *const buf = tail_alloc(DEFAULT_STRLEN + 1); 42dc75b01004a0588c1eb3bc26d7248a6e473b2cddElliott Hughes struct iovec io = { 43d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes .iov_base = buf, 44d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes .iov_len = -1 45d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes }; 46d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes int rc; 47d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 48d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes buf[0] = 0; 49d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 50d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes tprintf("%s", ""); 51d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 52d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes memset(buf + 1, 'X', DEFAULT_STRLEN); 53d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes buf[DEFAULT_STRLEN - 1] = 0; 54d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 55d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes rc = writev(-1, &io, 1); 56d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes tprintf("writev(-1, [{iov_base=\"\\0%*s\\0\"..., iov_len=%lu}], 1)" 57d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes " = %s\n", DEFAULT_STRLEN - 2, buf + 1, -1UL, sprintrc(rc)); 58d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 59d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes buf[DEFAULT_STRLEN - 1] = 'X'; 60d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes buf[DEFAULT_STRLEN] = 0; 61d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 62d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes rc = writev(-1, &io, 1); 63d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes tprintf("writev(-1, [{iov_base=\"\\0%*s\"..., iov_len=%lu}], 1)" 64d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes " = %s\n", DEFAULT_STRLEN - 1, buf + 1, -1UL, sprintrc(rc)); 65d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes 66dc75b01004a0588c1eb3bc26d7248a6e473b2cddElliott Hughes ++io.iov_base; 67dc75b01004a0588c1eb3bc26d7248a6e473b2cddElliott Hughes rc = writev(-1, &io, 1); 68dc75b01004a0588c1eb3bc26d7248a6e473b2cddElliott Hughes tprintf("writev(-1, [{iov_base=%p, iov_len=%lu}], 1) = %s\n", 69dc75b01004a0588c1eb3bc26d7248a6e473b2cddElliott Hughes io.iov_base, -1UL, sprintrc(rc)); 70dc75b01004a0588c1eb3bc26d7248a6e473b2cddElliott Hughes 71d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes tprintf("+++ exited with 0 +++\n"); 72d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes return 0; 73d35df493b4e7684c50d2d2fa032ee3a7ac228009Elliott Hughes} 74