1  /*
       2   * Copyright (c) 2021 The strace developers.
       3   * All rights reserved.
       4   *
       5   * SPDX-License-Identifier: GPL-2.0-or-later
       6   */
       7  
       8  #include "tests.h"
       9  #include "scno.h"
      10  
      11  #include <assert.h>
      12  #include <errno.h>
      13  #include <fcntl.h>
      14  #include <stdio.h>
      15  #include <stdint.h>
      16  #include <stdlib.h>
      17  #include <unistd.h>
      18  #include <sys/socket.h>
      19  
      20  int
      21  main(void)
      22  {
      23  	int sv[2];
      24  	if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv))
      25  		perror_msg_and_skip("socketpair");
      26  
      27  	unsigned int file_size = 0;
      28  	socklen_t optlen = sizeof(file_size);
      29  	if (getsockopt(sv[1], SOL_SOCKET, SO_SNDBUF, &file_size, &optlen))
      30  		perror_msg_and_fail("getsockopt");
      31  	file_size /= 4;
      32  
      33  	int reg_in = create_tmpfile(O_RDWR);
      34  	if (ftruncate(reg_in, file_size))
      35  		perror_msg_and_fail("ftruncate(%d, %u)", reg_in, file_size);
      36  
      37  	TAIL_ALLOC_OBJECT_CONST_PTR(uint64_t, p_off);
      38  	*p_off = 0xcafef00dfacefeedULL;
      39  
      40  #ifdef __NR_sendfile64
      41  	syscall(__NR_sendfile64, sv[1], reg_in, p_off, file_size);
      42  	static const char name[] = "sendfile64";
      43  	static const unsigned long long expected = -1ULL;
      44  #else
      45  	syscall(__NR_sendfile, sv[1], reg_in, p_off, file_size);
      46  	static const char name[] = "sendfile";
      47  	static const unsigned long long expected = (kernel_ulong_t) -1ULL;
      48  #endif
      49  
      50  	printf("%s(%d, %d, [0] => [%llu], %u) = %u (INJECTED: args)\n",
      51  	       name, sv[1], reg_in, expected, file_size, file_size);
      52  
      53  	puts("+++ exited with 0 +++");
      54  	return 0;
      55  }