1  /*
       2   * Check decoding of getcpu syscall.
       3   *
       4   * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
       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  #include <stdio.h>
      15  #include <unistd.h>
      16  
      17  int
      18  main(void)
      19  {
      20  	unsigned *bogus_cpu =
      21  		(unsigned *) tail_alloc(sizeof(*bogus_cpu)) + 1;
      22  	unsigned *bogus_node =
      23  		(unsigned *) tail_alloc(sizeof(*bogus_node)) + 1;
      24  	unsigned *bogus_tcache =
      25  		(unsigned *) tail_alloc(sizeof(*bogus_tcache)) + 1;
      26  
      27  	long res;
      28  	TAIL_ALLOC_OBJECT_CONST_PTR(unsigned, cpu);
      29  	TAIL_ALLOC_OBJECT_CONST_PTR(unsigned, node);
      30  	long *tcache = tail_alloc(128);
      31  
      32  	res = syscall(__NR_getcpu, NULL, NULL, NULL);
      33  	printf("getcpu(NULL, NULL, NULL) = %s\n", sprintrc(res));
      34  
      35  	res = syscall(__NR_getcpu, bogus_cpu, bogus_node, bogus_tcache);
      36  	printf("getcpu(%p, %p, %p) = %s\n",
      37  	       bogus_cpu, bogus_node, bogus_tcache, sprintrc(res));
      38  
      39  	res = syscall(__NR_getcpu, cpu, node, tcache);
      40  	if (res != 0)
      41  		perror_msg_and_skip("getcpu");
      42  
      43  	printf("getcpu([%u], [%u], %p) = 0\n", *cpu, *node, tcache);
      44  
      45  	puts("+++ exited with 0 +++");
      46  
      47  	return 0;
      48  }