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#include "project.h"
#include <db.h>
static DB *ea_map_db = NULL;
static int ea_map_init (void)
{
int ret;
ret = db_create (&ea_map_db, NULL, 0);
if (ret) {
ea_map_db = NULL;
return -1;
}
ret = ea_map_db->open (ea_map_db, NULL, NULL, NULL, DB_BTREE, DB_CREATE, 0x600);
if (ret) {
ea_map_db->err (ea_map_db, ret, "ea_map_db");
ea_map_db->close (ea_map_db, 0);
ea_map_db = NULL;
return -1;
}
return 0;
}
int ea_map_lookup (blk64_t src_blk, blk64_t *dst_blk, blk64_t *len)
{
DBT key = {0}, data = {0};
blk64_t *buf;
if (!ea_map_db)
return -1;
key.size = sizeof (src_blk);
key.data = &src_blk;
if (ea_map_db->get (ea_map_db, NULL, &key, &data, 0))
return -1;
if (data.size != (2 * sizeof (blk64_t)))
return -1;
buf = (blk64_t *) data.data;
*dst_blk = buf[0];
*len = buf[1];
return 0;
}
int ea_map_set (blk64_t src_blk, blk64_t dst_blk, blk64_t len)
{
DBT key = {0}, data = {0};
blk64_t buf[2] = {dst_blk, len};
int ret;
if (!ea_map_db)
if (ea_map_init())
return -1;
key.size = sizeof (src_blk);
key.data = &src_blk;
data.size = 2 * sizeof (dst_blk);
data.data = buf;
ret = ea_map_db->put (ea_map_db, NULL, &key, &data, 0);
if (ret)
ea_map_db->err (ea_map_db, ret, "DB->put");
return ret;
}
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