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74 lines
2.5 KiB
74 lines
2.5 KiB
/*
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* Check decoding of non-NUL-terminated strings when len == -1.
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*
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* Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
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* Copyright (c) 2016-2017 The strace developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "tests.h"
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/uio.h>
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int
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main(void)
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{
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char *const buf = tail_alloc(DEFAULT_STRLEN + 1);
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struct iovec io = {
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.iov_base = buf,
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.iov_len = -1
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};
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int rc;
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buf[0] = 0;
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tprintf("%s", "");
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memset(buf + 1, 'X', DEFAULT_STRLEN);
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buf[DEFAULT_STRLEN - 1] = 0;
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rc = writev(-1, &io, 1);
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tprintf("writev(-1, [{iov_base=\"\\0%*s\\0\"..., iov_len=%lu}], 1)"
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" = %s\n", DEFAULT_STRLEN - 2, buf + 1, -1UL, sprintrc(rc));
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buf[DEFAULT_STRLEN - 1] = 'X';
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buf[DEFAULT_STRLEN] = 0;
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rc = writev(-1, &io, 1);
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tprintf("writev(-1, [{iov_base=\"\\0%*s\"..., iov_len=%lu}], 1)"
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" = %s\n", DEFAULT_STRLEN - 1, buf + 1, -1UL, sprintrc(rc));
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++io.iov_base;
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rc = writev(-1, &io, 1);
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tprintf("writev(-1, [{iov_base=%p, iov_len=%lu}], 1) = %s\n",
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io.iov_base, -1UL, sprintrc(rc));
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tprintf("+++ exited with 0 +++\n");
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return 0;
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}
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