include/linux/fanotify.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _LINUX_FANOTIFY_H
   3 #define _LINUX_FANOTIFY_H
   4
   5 #include <uapi/linux/fanotify.h>
   6
   7 #define FAN_GROUP_FLAG(group, flag) \
   8         ((group)->fanotify_data.flags & (flag))
   9
  10 /*
  11  * Flags allowed to be passed from/to userspace.
  12  *
  13  * We intentionally do not add new bits to the old FAN_ALL_* constants, because
  14  * they are uapi exposed constants. If there are programs out there using
  15  * these constant, the programs may break if re-compiled with new uapi headers
  16  * and then run on an old kernel.
  17  */
  18 #define FANOTIFY_CLASS_BITS     (FAN_CLASS_NOTIF | FAN_CLASS_CONTENT | \
  19                                  FAN_CLASS_PRE_CONTENT)
  20
  21 #define FANOTIFY_FID_BITS       (FAN_REPORT_FID | FAN_REPORT_DFID_NAME)
  22
  23 #define FANOTIFY_INIT_FLAGS     (FANOTIFY_CLASS_BITS | FANOTIFY_FID_BITS | \
  24                                  FAN_REPORT_TID | \
  25                                  FAN_CLOEXEC | FAN_NONBLOCK | \
  26                                  FAN_UNLIMITED_QUEUE | FAN_UNLIMITED_MARKS)
  27
  28 #define FANOTIFY_MARK_TYPE_BITS (FAN_MARK_INODE | FAN_MARK_MOUNT | \
  29                                  FAN_MARK_FILESYSTEM)
  30
  31 #define FANOTIFY_MARK_FLAGS     (FANOTIFY_MARK_TYPE_BITS | \
  32                                  FAN_MARK_ADD | \
  33                                  FAN_MARK_REMOVE | \
  34                                  FAN_MARK_DONT_FOLLOW | \
  35                                  FAN_MARK_ONLYDIR | \
  36                                  FAN_MARK_IGNORED_MASK | \
  37                                  FAN_MARK_IGNORED_SURV_MODIFY | \
  38                                  FAN_MARK_FLUSH)
  39
  40 /*
  41  * Events that can be reported with data type FSNOTIFY_EVENT_PATH.
  42  * Note that FAN_MODIFY can also be reported with data type
  43  * FSNOTIFY_EVENT_INODE.
  44  */
  45 #define FANOTIFY_PATH_EVENTS    (FAN_ACCESS | FAN_MODIFY | \
  46                                  FAN_CLOSE | FAN_OPEN | FAN_OPEN_EXEC)
  47
  48 /*
  49  * Directory entry modification events - reported only to directory
  50  * where entry is modified and not to a watching parent.
  51  */
  52 #define FANOTIFY_DIRENT_EVENTS  (FAN_MOVE | FAN_CREATE | FAN_DELETE)
  53
  54 /* Events that can only be reported with data type FSNOTIFY_EVENT_INODE */
  55 #define FANOTIFY_INODE_EVENTS   (FANOTIFY_DIRENT_EVENTS | \
  56                                  FAN_ATTRIB | FAN_MOVE_SELF | FAN_DELETE_SELF)
  57
  58 /* Events that user can request to be notified on */
  59 #define FANOTIFY_EVENTS         (FANOTIFY_PATH_EVENTS | \
  60                                  FANOTIFY_INODE_EVENTS)
  61
  62 /* Events that require a permission response from user */
  63 #define FANOTIFY_PERM_EVENTS    (FAN_OPEN_PERM | FAN_ACCESS_PERM | \
  64                                  FAN_OPEN_EXEC_PERM)
  65
  66 /* Extra flags that may be reported with event or control handling of events */
  67 #define FANOTIFY_EVENT_FLAGS    (FAN_EVENT_ON_CHILD | FAN_ONDIR)
  68
  69 /* Events that may be reported to user */
  70 #define FANOTIFY_OUTGOING_EVENTS        (FANOTIFY_EVENTS | \
  71                                          FANOTIFY_PERM_EVENTS | \
  72                                          FAN_Q_OVERFLOW | FAN_ONDIR)
  73
  74 #define ALL_FANOTIFY_EVENT_BITS         (FANOTIFY_OUTGOING_EVENTS | \
  75                                          FANOTIFY_EVENT_FLAGS)
  76
  77 /* Do not use these old uapi constants internally */
  78 #undef FAN_ALL_CLASS_BITS
  79 #undef FAN_ALL_INIT_FLAGS
  80 #undef FAN_ALL_MARK_FLAGS
  81 #undef FAN_ALL_EVENTS
  82 #undef FAN_ALL_PERM_EVENTS
  83 #undef FAN_ALL_OUTGOING_EVENTS
  84
  85 #endif /* _LINUX_FANOTIFY_H */