notify.idl

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#include "idl_types.h"

/*
   IDL structures for notify change code

   this defines the structures used in the notify database code, and
   the change notify buffers
*/

import "misc.idl";

[
  pointer_default(unique)
]
interface notify
{

	/* structure used in the notify database */
	typedef [public] struct {
		server_id server;
		uint32 filter; /* filter to apply in this directory */
		uint32 subdir_filter; /* filter to apply in child directories */
		utf8string path;
		uint32 path_len; /* saves some computation on search */
		pointer private_data;
	} notify_entry;

	/*
	  to allow for efficient search for matching entries, we
	  divide them by the directory depth, with a separate array
	  per depth. The entries within each depth are sorted by path,
	  allowing for a bisection search.

	  The max_mask and max_mask_subdir at each depth is the
	  bitwise or of the filters and subdir filters for all entries
	  at that depth. This allows a depth to be quickly skipped if
	  no entries will match the target filter	  
	*/
	typedef struct {
		uint32 max_mask;
		uint32 max_mask_subdir;
		uint32 num_entries;
		notify_entry entries[num_entries];
	} notify_depth;

	typedef [public] struct {
		uint32 num_depths;
		notify_depth depth[num_depths];
	} notify_array;

	/* structure sent between servers in notify messages */
	typedef [public] struct {
		uint32 action;
		utf8string path;
		pointer private_data;
	} notify_event;

}