1  /*
       2   * Check decoding of socketcall syscall.
       3   *
       4   * Copyright (c) 2016-2018 Dmitry V. Levin <ldv@strace.io>
       5   * Copyright (c) 2016-2021 The strace developers.
       6   * All rights reserved.
       7   *
       8   * SPDX-License-Identifier: GPL-2.0-or-later
       9   */
      10  
      11  #include "tests.h"
      12  #include "scno.h"
      13  
      14  #if defined __NR_socketcall && !defined __ARM_EABI__
      15  
      16  # include <assert.h>
      17  # include <stdio.h>
      18  # include <unistd.h>
      19  
      20  # include "xlat.h"
      21  # include "xlat/socketcalls.h"
      22  
      23  static const char *
      24  xlookup_uint(const struct xlat *xlat, const unsigned int val)
      25  {
      26  	for (size_t i = 0; i < xlat->size; i++)
      27  		if (xlat->data[i].val == val)
      28  			return xlat->data[i].str;
      29  	return NULL;
      30  }
      31  
      32  static const int sc_min = 1, sc_max = 20;
      33  static void *efault;
      34  
      35  static void
      36  test_socketcall(const int i, const void *const addr)
      37  {
      38  	const unsigned long call =
      39  		(unsigned long) 0xfacefeed00000000ULL | (unsigned int) i;
      40  
      41  	long rc = syscall(__NR_socketcall, call, addr);
      42  
      43  	if (i < sc_min || i > sc_max) {
      44  		printf("socketcall(%d, %p) = %ld %s (%m)\n",
      45  		       (int) call, addr, rc, errno2name());
      46  	} else if (addr == efault) {
      47  		const char *const str = xlookup_uint(socketcalls, i);
      48  		assert(str);
      49  		printf("socketcall(%s, %p) = %ld %s (%m)\n",
      50  		       str, addr, rc, errno2name());
      51  	}
      52  }
      53  int
      54  main(void)
      55  {
      56  	assert(0 == socketcalls->data[0].val);
      57  	assert((unsigned) sc_max == socketcalls->data[socketcalls->size - 1].val);
      58  
      59  	const unsigned long *const args = tail_alloc(sizeof(*args) * 6);
      60  	efault = tail_alloc(1) + 1;
      61  
      62  	for (int i = sc_min - 3; i <= sc_max + 3; ++i) {
      63  		test_socketcall(i, efault);
      64  		test_socketcall(i, args);
      65  	}
      66  
      67  	puts("+++ exited with 0 +++");
      68  	return 0;
      69  }
      70  
      71  #else
      72  
      73  SKIP_MAIN_UNDEFINED("__NR_socketcall && !__ARM_EABI__")
      74  
      75  #endif