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2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b 
 kernel/include/linux/fanotify.h
....@@ -4,6 +4,82 @@
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55 #include <uapi/linux/fanotify.h>
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-/* not valid from userspace, only kernel internal */
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-#define FAN_MARK_ONDIR		0x00000100
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+#define FAN_GROUP_FLAG(group, flag) \
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+	((group)->fanotify_data.flags & (flag))
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+
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+/*
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+ * Flags allowed to be passed from/to userspace.
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+ *
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+ * We intentionally do not add new bits to the old FAN_ALL_* constants, because
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+ * they are uapi exposed constants. If there are programs out there using
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+ * these constant, the programs may break if re-compiled with new uapi headers
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+ * and then run on an old kernel.
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+ */
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+#define FANOTIFY_CLASS_BITS	(FAN_CLASS_NOTIF | FAN_CLASS_CONTENT | \
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+				 FAN_CLASS_PRE_CONTENT)
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+
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+#define FANOTIFY_FID_BITS	(FAN_REPORT_FID | FAN_REPORT_DFID_NAME)
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+
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+#define FANOTIFY_INIT_FLAGS	(FANOTIFY_CLASS_BITS | FANOTIFY_FID_BITS | \
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+				 FAN_REPORT_TID | \
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+				 FAN_CLOEXEC | FAN_NONBLOCK | \
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+				 FAN_UNLIMITED_QUEUE | FAN_UNLIMITED_MARKS)
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+
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+#define FANOTIFY_MARK_TYPE_BITS	(FAN_MARK_INODE | FAN_MARK_MOUNT | \
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+				 FAN_MARK_FILESYSTEM)
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+
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+#define FANOTIFY_MARK_FLAGS	(FANOTIFY_MARK_TYPE_BITS | \
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+				 FAN_MARK_ADD | \
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+				 FAN_MARK_REMOVE | \
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+				 FAN_MARK_DONT_FOLLOW | \
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+				 FAN_MARK_ONLYDIR | \
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+				 FAN_MARK_IGNORED_MASK | \
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+				 FAN_MARK_IGNORED_SURV_MODIFY | \
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+				 FAN_MARK_FLUSH)
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+
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+/*
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+ * Events that can be reported with data type FSNOTIFY_EVENT_PATH.
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+ * Note that FAN_MODIFY can also be reported with data type
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+ * FSNOTIFY_EVENT_INODE.
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+ */
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+#define FANOTIFY_PATH_EVENTS	(FAN_ACCESS | FAN_MODIFY | \
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+				 FAN_CLOSE | FAN_OPEN | FAN_OPEN_EXEC)
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+
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+/*
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+ * Directory entry modification events - reported only to directory
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+ * where entry is modified and not to a watching parent.
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+ */
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+#define FANOTIFY_DIRENT_EVENTS	(FAN_MOVE | FAN_CREATE | FAN_DELETE)
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+
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+/* Events that can only be reported with data type FSNOTIFY_EVENT_INODE */
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+#define FANOTIFY_INODE_EVENTS	(FANOTIFY_DIRENT_EVENTS | \
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+				 FAN_ATTRIB | FAN_MOVE_SELF | FAN_DELETE_SELF)
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+
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+/* Events that user can request to be notified on */
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+#define FANOTIFY_EVENTS		(FANOTIFY_PATH_EVENTS | \
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+				 FANOTIFY_INODE_EVENTS)
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+
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+/* Events that require a permission response from user */
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+#define FANOTIFY_PERM_EVENTS	(FAN_OPEN_PERM | FAN_ACCESS_PERM | \
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+				 FAN_OPEN_EXEC_PERM)
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+
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+/* Extra flags that may be reported with event or control handling of events */
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+#define FANOTIFY_EVENT_FLAGS	(FAN_EVENT_ON_CHILD | FAN_ONDIR)
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+
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+/* Events that may be reported to user */
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+#define FANOTIFY_OUTGOING_EVENTS	(FANOTIFY_EVENTS | \
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+					 FANOTIFY_PERM_EVENTS | \
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+					 FAN_Q_OVERFLOW | FAN_ONDIR)
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+
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+#define ALL_FANOTIFY_EVENT_BITS		(FANOTIFY_OUTGOING_EVENTS | \
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+					 FANOTIFY_EVENT_FLAGS)
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+
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+/* Do not use these old uapi constants internally */
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+#undef FAN_ALL_CLASS_BITS
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+#undef FAN_ALL_INIT_FLAGS
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+#undef FAN_ALL_MARK_FLAGS
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+#undef FAN_ALL_EVENTS
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+#undef FAN_ALL_PERM_EVENTS
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+#undef FAN_ALL_OUTGOING_EVENTS
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+
985 #endif /* _LINUX_FANOTIFY_H */