1  /*
       2   * Check decoding of inotify_add_watch and inotify_rm_watch syscalls.
       3   *
       4   * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
       5   * Copyright (c) 2016-2019 The strace developers.
       6   * All rights reserved.
       7   *
       8   * SPDX-License-Identifier: GPL-2.0-or-later
       9   */
      10  
      11  #include "tests.h"
      12  
      13  #include "scno.h"
      14  
      15  #if defined(__NR_inotify_add_watch) && defined(__NR_inotify_rm_watch)
      16  
      17  # include <stdio.h>
      18  # include <string.h>
      19  # include <unistd.h>
      20  
      21  int
      22  main(void)
      23  {
      24  	static const struct {
      25  		const char *path;
      26  		const char *str;
      27  	} bogus_path_str = {
      28  		ARG_STR("/abc\1/def\2/ghi\3/jkl\4/mno\5/pqr\6/stu\7/vwx\10") };
      29  	static const kernel_ulong_t bogus_fd =
      30  		(kernel_ulong_t) 0xfffffeedfffffaceULL;
      31  	static const kernel_ulong_t bogus_mask =
      32  		(kernel_ulong_t) 0xffffda7affffdeadULL;
      33  	static const char *bogus_mask_str = "IN_ACCESS|IN_ATTRIB|"
      34  		"IN_CLOSE_WRITE|IN_OPEN|IN_MOVED_TO|IN_DELETE|IN_DELETE_SELF|"
      35  		"IN_MOVE_SELF|IN_Q_OVERFLOW|IN_IGNORED|IN_ONLYDIR|"
      36  		"IN_DONT_FOLLOW|IN_EXCL_UNLINK|IN_MASK_CREATE|IN_MASK_ADD|"
      37  		"IN_ISDIR|IN_ONESHOT|0x8ff1000";
      38  
      39  	long rc;
      40  	char *bogus_path = tail_memdup(bogus_path_str.path,
      41  		strlen(bogus_path_str.path) + 1);
      42  
      43  	rc = syscall(__NR_inotify_add_watch, 0, NULL, 0);
      44  	printf("inotify_add_watch(0, NULL, 0) = %s\n", sprintrc(rc));
      45  
      46  	rc = syscall(__NR_inotify_add_watch, bogus_fd, bogus_path + 4096, 0);
      47  	printf("inotify_add_watch(%d, %p, %u) = %s\n",
      48  	       (int) bogus_fd, bogus_path + 4096, 0, sprintrc(rc));
      49  
      50  	rc = syscall(__NR_inotify_add_watch, bogus_fd, bogus_path, bogus_mask);
      51  	printf("inotify_add_watch(%d, %s, %s) = %s\n",
      52  	       (int) bogus_fd, bogus_path_str.str, bogus_mask_str,
      53  	       sprintrc(rc));
      54  
      55  	rc = syscall(__NR_inotify_rm_watch, 0, 0);
      56  	printf("inotify_rm_watch(0, 0) = %s\n", sprintrc(rc));
      57  
      58  	rc = syscall(__NR_inotify_rm_watch, bogus_fd, bogus_fd);
      59  	printf("inotify_rm_watch(%d, %d) = %s\n",
      60  	       (int) bogus_fd, (int) bogus_fd, sprintrc(rc));
      61  
      62  	puts("+++ exited with 0 +++");
      63  
      64  	return 0;
      65  }
      66  
      67  #else
      68  
      69  SKIP_MAIN_UNDEFINED("__NR_inotify_add_watch && __NR_inotify_rm_watch");
      70  
      71  #endif