Files
lightning/common/gossip_store.h
Rusty Russell 6115ed02e8 subdaemons: don't stream gossip_store at all.
We now let gossipd do it.

This also means there's nothing left in 'struct per_peer_state' to
send across the wire (the fds are sent separately), so that gets
removed from wire messages too.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2022-01-20 15:24:06 +10:30

58 lines
1.5 KiB
C

#ifndef LIGHTNING_COMMON_GOSSIP_STORE_H
#define LIGHTNING_COMMON_GOSSIP_STORE_H
#include "config.h"
#include <ccan/endian/endian.h>
#include <ccan/short_types/short_types.h>
#include <ccan/tal/tal.h>
struct gossip_state;
struct gossip_rcvd_filter;
/**
* gossip_store -- On-disk storage related information
*/
#define GOSSIP_STORE_VERSION 9
/**
* Bit of length we use to mark a deleted record.
*/
#define GOSSIP_STORE_LEN_DELETED_BIT 0x80000000U
/**
* Bit of length we use to mark an important record.
*/
#define GOSSIP_STORE_LEN_PUSH_BIT 0x40000000U
/* Mask for extracting just the length part of len field */
#define GOSSIP_STORE_LEN_MASK \
(~(GOSSIP_STORE_LEN_PUSH_BIT | GOSSIP_STORE_LEN_DELETED_BIT))
/**
* gossip_hdr -- On-disk format header.
*/
struct gossip_hdr {
beint32_t len; /* Length of message after header. */
beint32_t crc; /* crc of message of timestamp, after header. */
beint32_t timestamp; /* timestamp of msg. */
};
/**
* Direct store accessor: loads gossip msg from store.
*
* Returns NULL if there are no more gossip msgs.
*/
u8 *gossip_store_iter(const tal_t *ctx,
int *gossip_store_fd,
struct gossip_state *gs,
struct gossip_rcvd_filter *grf,
size_t *off);
/**
* Gossipd will be writing to this, and it's not atomic! Safest
* way to find the "end" is to walk through.
* @old_end: 1 if no previous end.
*/
size_t find_gossip_store_end(int gossip_store_fd, size_t old_end);
#endif /* LIGHTNING_COMMON_GOSSIP_STORE_H */