diff options
Diffstat (limited to 'source4/lib/dbwrap/dbwrap_ctdb.c')
| -rw-r--r-- | source4/lib/dbwrap/dbwrap_ctdb.c | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/source4/lib/dbwrap/dbwrap_ctdb.c b/source4/lib/dbwrap/dbwrap_ctdb.c deleted file mode 100644 index b079658a00..0000000000 --- a/source4/lib/dbwrap/dbwrap_ctdb.c +++ /dev/null @@ -1,192 +0,0 @@ -/* - Unix SMB/CIFS implementation. - - Database interface wrapper around ctdbd - - Copyright (C) Andrew Tridgell 2007 - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see <http://www.gnu.org/licenses/>. -*/ - -#include "includes.h" -#include "../tdb/include/tdb.h" -#include "lib/dbwrap/dbwrap.h" -#include "cluster/cluster.h" -#include "cluster/ctdb/include/ctdb.h" - -static NTSTATUS db_ctdb_store(struct db_record *rec, TDB_DATA data, int flag) -{ - struct ctdb_record_handle *h = talloc_get_type(rec->private_data, struct ctdb_record_handle); - int ret; - - ret = ctdb_record_store(h, data); - if (ret != 0) { - return NT_STATUS_INTERNAL_DB_CORRUPTION; - } - return NT_STATUS_OK; -} - -static NTSTATUS db_ctdb_delete(struct db_record *rec) -{ - return rec->store(rec, tdb_null, TDB_REPLACE); -} - - -static struct db_record *db_ctdb_fetch_locked(struct db_context *db, - TALLOC_CTX *mem_ctx, - TDB_DATA key) -{ - struct db_record *rec; - struct ctdb_record_handle *h; - struct ctdb_db_context *cdb = talloc_get_type(db->private_data, struct ctdb_db_context); - - rec = talloc(mem_ctx, struct db_record); - if (!rec) return NULL; - - h = ctdb_fetch_lock(cdb, rec, key, &rec->value); - if (h == NULL) { - talloc_free(rec); - return NULL; - } - - rec->private_data = h; - rec->store = db_ctdb_store; - rec->delete_rec = db_ctdb_delete; - - return rec; -} - -/* - fetch (unlocked, no migration) operation on ctdb - */ -static int db_ctdb_fetch(struct db_context *db, TALLOC_CTX *mem_ctx, - TDB_DATA key, TDB_DATA *data) -{ - struct ctdb_db_context *cdb = talloc_get_type(db->private_data, struct ctdb_db_context); - - return ctdb_fetch(cdb, mem_ctx, key, data); -} - -struct traverse_state { - struct db_context *db; - int (*fn)(struct db_record *rec, void *private_data); - void *private_data; -}; - -static int traverse_callback(struct ctdb_context *ctdb, TDB_DATA key, TDB_DATA data, void *private_data) -{ - struct traverse_state *state = (struct traverse_state *)private_data; - struct db_record *rec; - TALLOC_CTX *tmp_ctx = talloc_new(state->db); - /* we have to give them a locked record to prevent races */ - rec = db_ctdb_fetch_locked(state->db, tmp_ctx, key); - if (rec && rec->value.dsize > 0) { - state->fn(rec, state->private_data); - } - talloc_free(tmp_ctx); - return 0; -} - -static int db_ctdb_traverse(struct db_context *db, - int (*fn)(struct db_record *rec, void *private_data), - void *private_data) -{ - struct ctdb_db_context *cdb = talloc_get_type(db->private_data, struct ctdb_db_context); - struct traverse_state state; - - state.db = db; - state.fn = fn; - state.private_data = private_data; - - ctdb_traverse(cdb, traverse_callback, &state); - return 0; -} - -static NTSTATUS db_ctdb_store_deny(struct db_record *rec, TDB_DATA data, int flag) -{ - return NT_STATUS_MEDIA_WRITE_PROTECTED; -} - -static NTSTATUS db_ctdb_delete_deny(struct db_record *rec) -{ - return NT_STATUS_MEDIA_WRITE_PROTECTED; -} - -static int traverse_read_callback(struct ctdb_context *ctdb, - TDB_DATA key, TDB_DATA data, void *private_data) -{ - struct traverse_state *state = (struct traverse_state *)private_data; - struct db_record rec; - rec.key = key; - rec.value = data; - rec.store = db_ctdb_store_deny; - rec.delete_rec = db_ctdb_delete_deny; - rec.private_data = state->db; - state->fn(&rec, state->private_data); - return 0; -} - -static int db_ctdb_traverse_read(struct db_context *db, - int (*fn)(struct db_record *rec, - void *private_data), - void *private_data) -{ - struct traverse_state state; - struct ctdb_db_context *cdb = talloc_get_type(db->private_data, struct ctdb_db_context); - - state.db = db; - state.fn = fn; - state.private_data = private_data; - - ctdb_traverse(cdb, traverse_read_callback, &state); - return 0; -} - -static int db_ctdb_get_seqnum(struct db_context *db) -{ - DEBUG(0,("ctdb_get_seqnum not implemented\n")); - return -1; -} - -struct db_context *db_tmp_open_ctdb(TALLOC_CTX *mem_ctx, struct loadparm_context *lp_ctx, - const char *name, int tdb_flags) -{ - struct db_context *db; - struct ctdb_context *ctdb = talloc_get_type(cluster_backend_handle(), - struct ctdb_context); - struct ctdb_db_context *cdb; - - db = talloc_zero(mem_ctx, struct db_context); - if (db == NULL) { - return NULL; - } - - cdb = ctdb_attach(ctdb, name); - if (!cdb) { - DEBUG(0,("Failed to attach to ctdb database '%s'\n", name)); - talloc_free(db); - return NULL; - } - - db->private_data = cdb; - db->fetch_locked = db_ctdb_fetch_locked; - db->fetch = db_ctdb_fetch; - db->traverse = db_ctdb_traverse; - db->traverse_read = db_ctdb_traverse_read; - db->get_seqnum = db_ctdb_get_seqnum; - - DEBUG(3,("db_tmp_open_ctdb: opened database '%s'\n", name)); - - return db; -} |