1  /*
       2   * Copyright (c) 2016-2023 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  #ifdef __NR_symlink
      12  
      13  # include <stdio.h>
      14  # include <string.h>
      15  # include <unistd.h>
      16  
      17  int
      18  main(int ac, char **av)
      19  {
      20  	static const char sample_str[] = "symlink.sample";
      21  	static const char target_str[] = "symlink.target";
      22  
      23  	TAIL_ALLOC_OBJECT_CONST_ARR(char, sample, sizeof(sample_str));
      24  	TAIL_ALLOC_OBJECT_CONST_ARR(char, target, sizeof(target_str));
      25  	TAIL_ALLOC_OBJECT_CONST_ARR(char, short_sample, sizeof(sample_str) - 1);
      26  	TAIL_ALLOC_OBJECT_CONST_ARR(char, short_target, sizeof(target_str) - 1);
      27  
      28  	long rc;
      29  
      30  	memcpy(sample, sample_str, sizeof(sample_str));
      31  	memcpy(target, target_str, sizeof(target_str));
      32  	memcpy(short_sample, sample_str, sizeof(sample_str) - 1);
      33  	memcpy(short_target, target_str, sizeof(target_str) - 1);
      34  
      35  	rc = syscall(__NR_symlink, NULL, NULL);
      36  # ifndef PATH_TRACING
      37  	printf("symlink(NULL, NULL) = %s\n", sprintrc(rc));
      38  # endif
      39  
      40  	rc = syscall(__NR_symlink, NULL, sample);
      41  	printf("symlink(NULL, \"%s\") = %s\n", sample, sprintrc(rc));
      42  
      43  	rc = syscall(__NR_symlink, short_target, sample);
      44  	printf("symlink(%p, \"%s\") = %s\n",
      45  	       short_target, sample, sprintrc(rc));
      46  
      47  	rc = syscall(__NR_symlink, target, short_sample);
      48  # ifndef PATH_TRACING
      49  	printf("symlink(\"%s\", %p) = %s\n",
      50  	       target, short_sample, sprintrc(rc));
      51  # endif
      52  
      53  	rc = syscall(__NR_symlink, sample, av[0]);
      54  # ifndef PATH_TRACING
      55  	printf("symlink(\"%s\", \"%s\") = %s\n", sample, av[0], sprintrc(rc));
      56  # endif
      57  
      58  	rc = syscall(__NR_symlink, target, sample);
      59  	printf("symlink(\"%s\", \"%s\") = %s\n", target, sample, sprintrc(rc));
      60  
      61  	puts("+++ exited with 0 +++");
      62  	return 0;
      63  }
      64  
      65  #else
      66  
      67  SKIP_MAIN_UNDEFINED("__NR_symlink")
      68  
      69  #endif