1  /*
       2   * Check decoding of fanotify_init syscall.
       3   *
       4   * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
       5   * Copyright (c) 2016-2022 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 <limits.h>
      15  #include <stdio.h>
      16  #include <unistd.h>
      17  
      18  /* Performs fanotify_init call via the syscall interface. */
      19  static void
      20  do_call(kernel_ulong_t flags, const char *flags_str,
      21  	kernel_ulong_t event_f_flags, const char *event_f_flags_str)
      22  {
      23  	long rc;
      24  
      25  	rc = syscall(__NR_fanotify_init, flags, event_f_flags);
      26  
      27  	printf("fanotify_init(%s, %s) = %s\n",
      28  	       flags_str, event_f_flags_str, sprintrc(rc));
      29  }
      30  
      31  struct strval {
      32  	kernel_ulong_t val;
      33  	const char *str;
      34  };
      35  
      36  
      37  int
      38  main(void)
      39  {
      40  	static const struct strval flags[] = {
      41  		{ F8ILL_KULONG_MASK, "FAN_CLASS_NOTIF" },
      42  		{ (kernel_ulong_t) 0xffffffff0000000cULL,
      43  			"0xc /* FAN_CLASS_??? */" },
      44  		{ (kernel_ulong_t) 0xdec0deddeface004ULL,
      45  			"FAN_CLASS_CONTENT|0xeface000 /* FAN_??? */" },
      46  		{ (kernel_ulong_t) 0xffffffffffffffffULL,
      47  			"0xc /* FAN_CLASS_??? */|FAN_CLOEXEC|FAN_NONBLOCK|"
      48  			"FAN_UNLIMITED_QUEUE|FAN_UNLIMITED_MARKS|"
      49  			"FAN_ENABLE_AUDIT|FAN_REPORT_PIDFD|FAN_REPORT_TID|"
      50  			"FAN_REPORT_FID|FAN_REPORT_DIR_FID|FAN_REPORT_NAME|"
      51  			"FAN_REPORT_TARGET_FID|0xffffe000" },
      52  	};
      53  	static const struct strval event_f_flags[] = {
      54  		{ F8ILL_KULONG_MASK, "O_RDONLY" },
      55  		{ (kernel_ulong_t) 0xdeadbeef80000001ULL,
      56  			"O_WRONLY|0x80000000" }
      57  	};
      58  
      59  	for (unsigned int i = 0; i < ARRAY_SIZE(flags); ++i)
      60  		for (unsigned int j = 0; j < ARRAY_SIZE(event_f_flags); ++j)
      61  			do_call(flags[i].val, flags[i].str,
      62  				event_f_flags[j].val, event_f_flags[j].str);
      63  
      64  	puts("+++ exited with 0 +++");
      65  	return 0;
      66  }