1  /*
       2   * This file is part of ioctl_inotify strace test.
       3   *
       4   * Copyright (c) 2018-2019 The strace developers.
       5   * All rights reserved.
       6   *
       7   * SPDX-License-Identifier: GPL-2.0-or-later
       8   */
       9  
      10  #include "tests.h"
      11  
      12  #include <inttypes.h>
      13  #include <stdio.h>
      14  #include <string.h>
      15  #include <unistd.h>
      16  #include "scno.h"
      17  #include <linux/ioctl.h>
      18  
      19  #ifndef INOTIFY_IOC_SETNEXTWD
      20  # define INOTIFY_IOC_SETNEXTWD  _IOW('I', 0, int32_t)
      21  #endif
      22  
      23  static long
      24  sys_ioctl(kernel_long_t fd, kernel_ulong_t cmd, kernel_ulong_t arg)
      25  {
      26  	return syscall(__NR_ioctl, fd, cmd, arg);
      27  }
      28  
      29  int
      30  main(void)
      31  {
      32  	static const kernel_ulong_t unknown_inotify_cmd =
      33  		(kernel_ulong_t) 0xbadc0dedfeed49edULL;
      34  	static const kernel_ulong_t magic =
      35  		(kernel_ulong_t) 0xdeadbeefbadc0dedULL;
      36  
      37  	/* Unknown inotify commands */
      38  	sys_ioctl(-1, unknown_inotify_cmd, magic);
      39  	printf("ioctl(-1, _IOC(%s_IOC_READ|_IOC_WRITE, 0x49, %#x, %#x), "
      40  	       "%#lx) = -1 EBADF (%m)\n",
      41  	       _IOC_DIR((unsigned int) unknown_inotify_cmd) & _IOC_NONE ?
      42  	       "_IOC_NONE|" : "",
      43  	       _IOC_NR((unsigned int) unknown_inotify_cmd),
      44  	       _IOC_SIZE((unsigned int) unknown_inotify_cmd),
      45  	       (unsigned long) magic);
      46  
      47  	sys_ioctl(-1, INOTIFY_IOC_SETNEXTWD + 1, magic);
      48  	printf("ioctl(-1, _IOC(_IOC_WRITE, 0x49, %#x, %#x), %#lx)"
      49  	       " = -1 EBADF (%m)\n",
      50  	       (unsigned int) _IOC_NR(INOTIFY_IOC_SETNEXTWD + 1),
      51  	       (unsigned int) _IOC_SIZE(INOTIFY_IOC_SETNEXTWD + 1),
      52  	       (unsigned long) magic);
      53  
      54  	/* INOTIFY_IOC_SETNEXTWD */
      55  	sys_ioctl(-1, INOTIFY_IOC_SETNEXTWD, magic);
      56  	printf("ioctl(-1, INOTIFY_IOC_SETNEXTWD, %d) = -1 EBADF (%m)\n",
      57  	       (int) magic);
      58  
      59  	puts("+++ exited with 0 +++");
      60  	return 0;
      61  }