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document the rdatasetheader next and down pointers

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This commit is contained in:
Andreas Gustafsson
2001-10-27 00:27:54 +00:00
parent f2b515e117
commit 6b07de6abf
1 changed files with 14 additions and 1 deletions
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15
lib/dns/rbtdb.c
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@@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: rbtdb.c,v 1.170 2001/10/25 21:39:48 bwelling Exp $ */
/* $Id: rbtdb.c,v 1.171 2001/10/27 00:27:54 gson Exp $ */
/*
* Principal Author: Bob Halley
@@ -107,8 +107,21 @@ typedef struct rdatasetheader {
* We don't use the LIST macros, because the LIST structure has
* both head and tail pointers, and is doubly linked.
*/
struct rdatasetheader *next;
/*
* If this is the top header for an rdataset, 'next' points
* to the top header for the next rdataset (i.e., the next type).
* Otherwise, it points up to the header whose down pointer points
* at this header.
*/
struct rdatasetheader *down;
/*
* Points to the header for the next older version of
* this rdataset.
*/
} rdatasetheader_t;
#define RDATASET_ATTR_NONEXISTENT 0x0001