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/*
* Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
* Copyright (c) 2015-2018 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <asm/unistd.h>
#ifdef __NR_sendfile
# include <assert.h>
# include <errno.h>
# include <fcntl.h>
# include <stdio.h>
# include <stdint.h>
# include <stdlib.h>
# include <unistd.h>
# include <sys/socket.h>
int
main(void)
{
(void) close(0);
if (open("/dev/zero", O_RDONLY) != 0)
perror_msg_and_skip("open: %s", "/dev/zero");
int sv[2];
if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv))
perror_msg_and_skip("socketpair");
const unsigned int page_size = get_page_size();
assert(syscall(__NR_sendfile, 0, 1, NULL, page_size) == -1);
if (EBADF != errno)
perror_msg_and_skip("sendfile");
printf("sendfile(0, 1, NULL, %u) = -1 EBADF (%m)\n", page_size);
unsigned int file_size = 0;
socklen_t optlen = sizeof(file_size);
if (getsockopt(sv[1], SOL_SOCKET, SO_SNDBUF, &file_size, &optlen))
perror_msg_and_fail("getsockopt");
if (file_size < 1024)
error_msg_and_skip("SO_SNDBUF too small: %u", file_size);
file_size /= 4;
if (file_size / 16 > page_size)
file_size = page_size * 16;
const unsigned int blen = file_size / 3;
const unsigned int alen = file_size - blen;
static const char fname[] = "sendfile-tmpfile";
int reg_in = open(fname, O_RDWR | O_CREAT | O_TRUNC, 0600);
if (reg_in < 0)
perror_msg_and_fail("open: %s", fname);
if (unlink(fname))
perror_msg_and_fail("unlink: %s", fname);
if (ftruncate(reg_in, file_size))
perror_msg_and_fail("ftruncate: %s", fname);
TAIL_ALLOC_OBJECT_VAR_PTR(uint32_t, p_off);
void *p = p_off + 1;
*p_off = 0;
assert(syscall(__NR_sendfile, 0, 1, p, page_size) == -1);
printf("sendfile(0, 1, %p, %u) = -1 EFAULT (%m)\n", p, page_size);
assert(syscall(__NR_sendfile, sv[1], reg_in, NULL, alen)
== (long) alen);
printf("sendfile(%d, %d, NULL, %u) = %u\n",
sv[1], reg_in, alen, alen);
p = p_off;
if (syscall(__NR_sendfile, sv[1], reg_in, p_off, alen) != (long) alen) {
printf("sendfile(%d, %d, %#lx, %u) = -1 EFAULT (%m)\n",
sv[1], reg_in, (unsigned long) p_off, alen);
--p_off;
*p_off = 0;
assert(syscall(__NR_sendfile, sv[1], reg_in, p_off, alen)
== (long) alen);
}
printf("sendfile(%d, %d, [0] => [%u], %u) = %u\n",
sv[1], reg_in, alen, alen, alen);
assert(syscall(__NR_sendfile, sv[1], reg_in, p_off, file_size + 1)
== (long) blen);
printf("sendfile(%d, %d, [%u] => [%u], %u) = %u\n",
sv[1], reg_in, alen, file_size, file_size + 1, blen);
if (p_off != p) {
uint64_t *p_off64 = (uint64_t *) p_off;
*p_off64 = 0xcafef00dfacefeedULL;
assert(syscall(__NR_sendfile, sv[1], reg_in, p_off64, 1) == -1);
printf("sendfile(%d, %d, [14627392582579060461], 1)"
" = -1 EINVAL (%m)\n", sv[1], reg_in);
*p_off64 = 0xdefaced;
} else {
*p_off = 0xdefaced;
}
assert(syscall(__NR_sendfile, sv[1], reg_in, p_off, 1) == 0);
printf("sendfile(%d, %d, [233811181], 1) = 0\n",
sv[1], reg_in);
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("__NR_sendfile")
#endif
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