1  /*
       2   * Check success injection.
       3   *
       4   * Copyright (c) 2017 Elvira Khabirova <lineprinter0@gmail.com>
       5   * Copyright (c) 2017-2021 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 <assert.h>
      15  #include <stdio.h>
      16  #include <stdlib.h>
      17  #include <unistd.h>
      18  #include <sys/stat.h>
      19  
      20  int
      21  main(int argc, char *argv[])
      22  {
      23  	assert(argc == 2);
      24  
      25  	static const char dir[] = "..";
      26  	struct stat before, after;
      27  
      28  	if (stat(".", &before))
      29  		perror_msg_and_fail("stat");
      30  
      31  	long rval = syscall(__NR_chdir, dir);
      32  
      33  	if (stat(".", &after))
      34  		perror_msg_and_fail("stat");
      35  
      36  	if (before.st_dev != after.st_dev || before.st_ino != after.st_ino)
      37  		error_msg_and_fail("syscall succeeded");
      38  	if (atol(argv[1]) != rval)
      39  		error_msg_and_fail("expected retval %s, got retval %ld",
      40  				   argv[1], rval);
      41  
      42  	printf("chdir(\"%s\") = %ld (INJECTED)\n", dir, rval);
      43  
      44  	puts("+++ exited with 0 +++");
      45  	return 0;
      46  }