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/*
* Check decoding of non-NUL-terminated strings when len == -1.
*
* Copyright (c) 2016 Dmitry V. Levin <ldv@strace.io>
* Copyright (c) 2016-2021 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/uio.h>
int
main(void)
{
char *const buf = tail_alloc(DEFAULT_STRLEN + 1);
struct iovec io = {
.iov_base = buf,
.iov_len = -1
};
int rc;
buf[0] = 0;
tprintf("%s", "");
memset(buf + 1, 'X', DEFAULT_STRLEN);
buf[DEFAULT_STRLEN - 1] = 0;
rc = writev(-1, &io, 1);
tprintf("writev(-1, [{iov_base=\"\\0%*s\\0\"..., iov_len=%lu}], 1)"
" = %s\n", DEFAULT_STRLEN - 2, buf + 1, -1UL, sprintrc(rc));
buf[DEFAULT_STRLEN - 1] = 'X';
buf[DEFAULT_STRLEN] = 0;
rc = writev(-1, &io, 1);
tprintf("writev(-1, [{iov_base=\"\\0%*s\"..., iov_len=%lu}], 1)"
" = %s\n", DEFAULT_STRLEN - 1, buf + 1, -1UL, sprintrc(rc));
++io.iov_base;
rc = writev(-1, &io, 1);
tprintf("writev(-1, [{iov_base=%p, iov_len=%lu}], 1) = %s\n",
io.iov_base, -1UL, sprintrc(rc));
tprintf("+++ exited with 0 +++\n");
return 0;
}
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