1  /*
       2   * Check decoding of set_mempolicy_home_node syscall.
       3   *
       4   * Copyright (c) 2022 Eugene Syromyatnikov <evgsyr@gmail.com>
       5   * All rights reserved.
       6   *
       7   * SPDX-License-Identifier: GPL-2.0-or-later
       8   */
       9  
      10  #include "tests.h"
      11  #include "scno.h"
      12  
      13  #include <inttypes.h>
      14  #include <stdio.h>
      15  #include <stdint.h>
      16  #include <unistd.h>
      17  
      18  static const char *errstr;
      19  
      20  static long
      21  sys_set_mempolicy_home_node(kernel_ulong_t start, kernel_ulong_t len,
      22  			    kernel_ulong_t home_node, kernel_ulong_t flags)
      23  {
      24  	static const kernel_ulong_t fill =
      25  		(kernel_ulong_t) 0xbadc0ded00000000ULL;
      26  	kernel_ulong_t arg1 = start;
      27  	kernel_ulong_t arg2 = len;
      28  	kernel_ulong_t arg3 = home_node;
      29  	kernel_ulong_t arg4 = flags;
      30  	kernel_ulong_t arg5 = fill | 0xdecaffed;
      31  	kernel_ulong_t arg6 = fill | 0xdeefaced;
      32  
      33  	long rc = syscall(__NR_set_mempolicy_home_node,
      34  			  arg1, arg2, arg3, arg4, arg5, arg6);
      35  	errstr = sprintrc(rc);
      36  	return rc;
      37  }
      38  
      39  #define KUL_1 ((unsigned long long) (kernel_ulong_t) -1ULL)
      40  
      41  int
      42  main(void)
      43  {
      44  	void *dummy;
      45  
      46  	sys_set_mempolicy_home_node(0, 0, 0, 0);
      47  	printf("set_mempolicy_home_node(NULL, 0, 0, 0) = %s\n", errstr);
      48  
      49  	sys_set_mempolicy_home_node((uintptr_t) &dummy, 1, 2, 3);
      50  	printf("set_mempolicy_home_node(%p, 1, 2, 0x3) = %s\n", &dummy, errstr);
      51  
      52  	sys_set_mempolicy_home_node(-1, -2, -3, -4);
      53  	printf("set_mempolicy_home_node(%#llx, %llu, %llu, %#llx) = %s\n",
      54  	       KUL_1, KUL_1 - 1, KUL_1 - 2, KUL_1 - 3, errstr);
      55  
      56  	puts("+++ exited with 0 +++");
      57  	return 0;
      58  }