/*
fetch a record from the ltdb, separating out the header information
and returning the body of the record. A valid (initial) header is
returned if the record is not present
*/
int ctdb_ltdb_fetch(struct ctdb_db_context *ctdb_db,
TDB_DATA key, struct ctdb_ltdb_header *header,
TALLOC_CTX *mem_ctx, TDB_DATA *data)
{
TDB_DATA rec;
struct ctdb_context *ctdb = ctdb_db->ctdb;
rec = tdb_fetch(ctdb_db->ltdb->tdb, key);
if (rec.dsize < sizeof(*header)) {
/* return an initial header */
if (rec.dptr) free(rec.dptr);
if (ctdb->vnn_map == NULL) {
/* called from the client */
ZERO_STRUCTP(data);
header->dmaster = (uint32_t)-1;
return -1;
}
ltdb_initial_header(ctdb_db, key, header);
if (data) {
*data = tdb_null;
}
if (ctdb_db->persistent || header->dmaster == ctdb_db->ctdb->pnn) {
if (ctdb_ltdb_store(ctdb_db, key, header, tdb_null) != 0) {
DEBUG(DEBUG_NOTICE,
(__location__ "failed to store initial header\n"));
}
}
return 0;
}
*header = *(struct ctdb_ltdb_header *)rec.dptr;
if (data) {
data->dsize = rec.dsize - sizeof(struct ctdb_ltdb_header);
data->dptr = talloc_memdup(mem_ctx,
sizeof(struct ctdb_ltdb_header)+rec.dptr,
data->dsize);
}
free(rec.dptr);
if (data) {
CTDB_NO_MEMORY(ctdb, data->dptr);
}
return 0;
}
/*
fetch a record from the ltdb, separating out the header information
and returning the body of the record. A valid (initial) header is
returned if the record is not present
*/
int ctdb_ltdb_fetch(struct ctdb_db_context *ctdb_db,
TDB_DATA key, struct ctdb_ltdb_header *header,
TALLOC_CTX *mem_ctx, TDB_DATA *data)
{
TDB_DATA rec;
struct ctdb_context *ctdb = ctdb_db->ctdb;
rec = tdb_fetch(ctdb_db->ltdb->tdb, key);
if (rec.dsize < sizeof(*header)) {
TDB_DATA d2;
/* return an initial header */
if (rec.dptr) free(rec.dptr);
if (ctdb->vnn_map == NULL) {
/* called from the client */
ZERO_STRUCTP(data);
header->dmaster = (uint32_t)-1;
return -1;
}
ltdb_initial_header(ctdb_db, key, header);
ZERO_STRUCT(d2);
if (data) {
*data = d2;
}
ctdb_ltdb_store(ctdb_db, key, header, d2);
return 0;
}
*header = *(struct ctdb_ltdb_header *)rec.dptr;
if (data) {
data->dsize = rec.dsize - sizeof(struct ctdb_ltdb_header);
data->dptr = talloc_memdup(mem_ctx,
sizeof(struct ctdb_ltdb_header)+rec.dptr,
data->dsize);
}
free(rec.dptr);
if (data) {
CTDB_NO_MEMORY(ctdb, data->dptr);
}
return 0;
}
