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/*
* This file is part of vmsplice strace test.
*
* Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
* Copyright (c) 2016-2019 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#if defined __NR_vmsplice
# include <assert.h>
# include <stdio.h>
# include <unistd.h>
# include <sys/uio.h>
int
main(void)
{
tprintf("%s", "");
int fds[2];
if (pipe(fds))
perror_msg_and_fail("pipe");
assert(0 == fds[0]);
assert(1 == fds[1]);
static const char w0_c[] = "012";
const char *w0_d = hexdump_strdup(w0_c);
void *w0 = tail_memdup(w0_c, LENGTH_OF(w0_c));
static const char w1_c[] = "34567";
const char *w1_d = hexdump_strdup(w1_c);
void *w1 = tail_memdup(w1_c, LENGTH_OF(w1_c));
static const char w2_c[] = "89abcde";
const char *w2_d = hexdump_strdup(w2_c);
void *w2 = tail_memdup(w2_c, LENGTH_OF(w2_c));
const struct iovec iov_[] = {
{
.iov_base = w0,
.iov_len = LENGTH_OF(w0_c)
}, {
.iov_base = w1,
.iov_len = LENGTH_OF(w1_c)
}, {
.iov_base = w2,
.iov_len = LENGTH_OF(w2_c)
}
};
const struct iovec *iov = tail_memdup(iov_, sizeof(iov_));
const unsigned int len =
LENGTH_OF(w0_c) + LENGTH_OF(w1_c) + LENGTH_OF(w2_c);
tprintf("vmsplice(1, [{iov_base=\"%s\", iov_len=%u}"
", {iov_base=\"%s\", iov_len=%u}"
", {iov_base=\"%s\", iov_len=%u}], %u, %s) = %u\n"
" * %u bytes in buffer 0\n"
" | 00000 %-49s %-16s |\n"
" * %u bytes in buffer 1\n"
" | 00000 %-49s %-16s |\n"
" * %u bytes in buffer 2\n"
" | 00000 %-49s %-16s |\n",
w0_c, LENGTH_OF(w0_c), w1_c, LENGTH_OF(w1_c),
w2_c, LENGTH_OF(w2_c), (unsigned int) ARRAY_SIZE(iov_),
"SPLICE_F_NONBLOCK", len,
LENGTH_OF(w0_c), w0_d, w0_c,
LENGTH_OF(w1_c), w1_d, w1_c, LENGTH_OF(w2_c), w2_d, w2_c);
const long rc = syscall(__NR_vmsplice, 1, iov, ARRAY_SIZE(iov_), 2);
if (rc < 0)
perror_msg_and_skip("vmsplice");
assert(rc == (int) len);
tprintf("+++ exited with 0 +++\n");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("__NR_vmsplice")
#endif
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