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Diffstat (limited to 'source3/lib/dbwrap/dbwrap_tdb.c')
-rw-r--r--source3/lib/dbwrap/dbwrap_tdb.c447
1 files changed, 0 insertions, 447 deletions
diff --git a/source3/lib/dbwrap/dbwrap_tdb.c b/source3/lib/dbwrap/dbwrap_tdb.c
deleted file mode 100644
index 798d391b1f..0000000000
--- a/source3/lib/dbwrap/dbwrap_tdb.c
+++ /dev/null
@@ -1,447 +0,0 @@
-/*
- Unix SMB/CIFS implementation.
- Database interface wrapper around tdb
- Copyright (C) Volker Lendecke 2005-2007
-
- 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 "dbwrap/dbwrap.h"
-#include "dbwrap/dbwrap_private.h"
-#include "dbwrap/dbwrap_tdb.h"
-#include "lib/tdb_wrap/tdb_wrap.h"
-#include "util_tdb.h"
-#include "system/filesys.h"
-
-struct db_tdb_ctx {
- struct tdb_wrap *wtdb;
-
- struct {
- dev_t dev;
- ino_t ino;
- } id;
-};
-
-static NTSTATUS db_tdb_store(struct db_record *rec, TDB_DATA data, int flag);
-static NTSTATUS db_tdb_delete(struct db_record *rec);
-
-static void db_tdb_log_key(const char *prefix, TDB_DATA key)
-{
- size_t len;
- char *keystr;
-
- if (DEBUGLEVEL < 10) {
- return;
- }
- len = key.dsize;
- if (DEBUGLEVEL == 10) {
- /*
- * Only fully spam at debuglevel > 10
- */
- len = MIN(10, key.dsize);
- }
- keystr = hex_encode_talloc(talloc_tos(), (unsigned char *)(key.dptr),
- len);
- DEBUG(10, ("%s key %s\n", prefix, keystr));
- TALLOC_FREE(keystr);
-}
-
-static int db_tdb_record_destr(struct db_record* data)
-{
- struct db_tdb_ctx *ctx =
- talloc_get_type_abort(data->private_data, struct db_tdb_ctx);
-
- db_tdb_log_key("Unlocking", data->key);
- tdb_chainunlock(ctx->wtdb->tdb, data->key);
- return 0;
-}
-
-struct tdb_fetch_locked_state {
- TALLOC_CTX *mem_ctx;
- struct db_record *result;
-};
-
-static int db_tdb_fetchlock_parse(TDB_DATA key, TDB_DATA data,
- void *private_data)
-{
- struct tdb_fetch_locked_state *state =
- (struct tdb_fetch_locked_state *)private_data;
- struct db_record *result;
-
- result = (struct db_record *)talloc_size(
- state->mem_ctx,
- sizeof(struct db_record) + key.dsize + data.dsize);
-
- if (result == NULL) {
- return 0;
- }
- state->result = result;
-
- result->key.dsize = key.dsize;
- result->key.dptr = ((uint8_t *)result) + sizeof(struct db_record);
- memcpy(result->key.dptr, key.dptr, key.dsize);
-
- result->value.dsize = data.dsize;
-
- if (data.dsize > 0) {
- result->value.dptr = result->key.dptr+key.dsize;
- memcpy(result->value.dptr, data.dptr, data.dsize);
- }
- else {
- result->value.dptr = NULL;
- }
-
- return 0;
-}
-
-static struct db_record *db_tdb_fetch_locked_internal(
- struct db_context *db, TALLOC_CTX *mem_ctx, TDB_DATA key)
-{
- struct db_tdb_ctx *ctx = talloc_get_type_abort(db->private_data,
- struct db_tdb_ctx);
- struct tdb_fetch_locked_state state;
-
- state.mem_ctx = mem_ctx;
- state.result = NULL;
-
- if ((tdb_parse_record(ctx->wtdb->tdb, key, db_tdb_fetchlock_parse,
- &state) < 0) &&
- (tdb_error(ctx->wtdb->tdb) != TDB_ERR_NOEXIST)) {
- tdb_chainunlock(ctx->wtdb->tdb, key);
- return NULL;
- }
-
- if (state.result == NULL) {
- db_tdb_fetchlock_parse(key, tdb_null, &state);
- }
-
- if (state.result == NULL) {
- tdb_chainunlock(ctx->wtdb->tdb, key);
- return NULL;
- }
-
- talloc_set_destructor(state.result, db_tdb_record_destr);
-
- state.result->private_data = talloc_reference(state.result, ctx);
- state.result->store = db_tdb_store;
- state.result->delete_rec = db_tdb_delete;
-
- DEBUG(10, ("Allocated locked data 0x%p\n", state.result));
-
- return state.result;
-}
-
-static struct db_record *db_tdb_fetch_locked(
- struct db_context *db, TALLOC_CTX *mem_ctx, TDB_DATA key)
-{
- struct db_tdb_ctx *ctx = talloc_get_type_abort(db->private_data,
- struct db_tdb_ctx);
-
- db_tdb_log_key("Locking", key);
- if (tdb_chainlock(ctx->wtdb->tdb, key) != 0) {
- DEBUG(3, ("tdb_chainlock failed\n"));
- return NULL;
- }
- return db_tdb_fetch_locked_internal(db, mem_ctx, key);
-}
-
-static struct db_record *db_tdb_try_fetch_locked(
- struct db_context *db, TALLOC_CTX *mem_ctx, TDB_DATA key)
-{
- struct db_tdb_ctx *ctx = talloc_get_type_abort(db->private_data,
- struct db_tdb_ctx);
-
- db_tdb_log_key("Trying to lock", key);
- if (tdb_chainlock_nonblock(ctx->wtdb->tdb, key) != 0) {
- DEBUG(3, ("tdb_chainlock_nonblock failed\n"));
- return NULL;
- }
- return db_tdb_fetch_locked_internal(db, mem_ctx, key);
-}
-
-
-static int db_tdb_exists(struct db_context *db, TDB_DATA key)
-{
- struct db_tdb_ctx *ctx = talloc_get_type_abort(
- db->private_data, struct db_tdb_ctx);
- return tdb_exists(ctx->wtdb->tdb, key);
-}
-
-static int db_tdb_wipe(struct db_context *db)
-{
- struct db_tdb_ctx *ctx = talloc_get_type_abort(
- db->private_data, struct db_tdb_ctx);
- return tdb_wipe_all(ctx->wtdb->tdb);
-}
-
-struct db_tdb_parse_state {
- void (*parser)(TDB_DATA key, TDB_DATA data,
- void *private_data);
- void *private_data;
-};
-
-/*
- * tdb_parse_record expects a parser returning int, mixing up tdb and
- * parser errors. Wrap around that by always returning 0 and have
- * dbwrap_parse_record expect a parser returning void.
- */
-
-static int db_tdb_parser(TDB_DATA key, TDB_DATA data, void *private_data)
-{
- struct db_tdb_parse_state *state =
- (struct db_tdb_parse_state *)private_data;
- state->parser(key, data, state->private_data);
- return 0;
-}
-
-static NTSTATUS db_tdb_parse(struct db_context *db, TDB_DATA key,
- void (*parser)(TDB_DATA key, TDB_DATA data,
- void *private_data),
- void *private_data)
-{
- struct db_tdb_ctx *ctx = talloc_get_type_abort(
- db->private_data, struct db_tdb_ctx);
- struct db_tdb_parse_state state;
- int ret;
-
- state.parser = parser;
- state.private_data = private_data;
-
- ret = tdb_parse_record(ctx->wtdb->tdb, key, db_tdb_parser, &state);
-
- if (ret != 0) {
- return map_nt_error_from_tdb(tdb_error(ctx->wtdb->tdb));
- }
- return NT_STATUS_OK;
-}
-
-static NTSTATUS db_tdb_store(struct db_record *rec, TDB_DATA data, int flag)
-{
- struct db_tdb_ctx *ctx = talloc_get_type_abort(rec->private_data,
- struct db_tdb_ctx);
-
- /*
- * This has a bug: We need to replace rec->value for correct
- * operation, but right now brlock and locking don't use the value
- * anymore after it was stored.
- */
-
- return (tdb_store(ctx->wtdb->tdb, rec->key, data, flag) == 0) ?
- NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
-}
-
-static NTSTATUS db_tdb_delete(struct db_record *rec)
-{
- struct db_tdb_ctx *ctx = talloc_get_type_abort(rec->private_data,
- struct db_tdb_ctx);
-
- if (tdb_delete(ctx->wtdb->tdb, rec->key) == 0) {
- return NT_STATUS_OK;
- }
-
- if (tdb_error(ctx->wtdb->tdb) == TDB_ERR_NOEXIST) {
- return NT_STATUS_NOT_FOUND;
- }
-
- return NT_STATUS_UNSUCCESSFUL;
-}
-
-struct db_tdb_traverse_ctx {
- struct db_context *db;
- int (*f)(struct db_record *rec, void *private_data);
- void *private_data;
-};
-
-static int db_tdb_traverse_func(TDB_CONTEXT *tdb, TDB_DATA kbuf, TDB_DATA dbuf,
- void *private_data)
-{
- struct db_tdb_traverse_ctx *ctx =
- (struct db_tdb_traverse_ctx *)private_data;
- struct db_record rec;
-
- rec.key = kbuf;
- rec.value = dbuf;
- rec.store = db_tdb_store;
- rec.delete_rec = db_tdb_delete;
- rec.private_data = ctx->db->private_data;
- rec.db = ctx->db;
-
- return ctx->f(&rec, ctx->private_data);
-}
-
-static int db_tdb_traverse(struct db_context *db,
- int (*f)(struct db_record *rec, void *private_data),
- void *private_data)
-{
- struct db_tdb_ctx *db_ctx =
- talloc_get_type_abort(db->private_data, struct db_tdb_ctx);
- struct db_tdb_traverse_ctx ctx;
-
- ctx.db = db;
- ctx.f = f;
- ctx.private_data = private_data;
- return tdb_traverse(db_ctx->wtdb->tdb, db_tdb_traverse_func, &ctx);
-}
-
-static NTSTATUS db_tdb_store_deny(struct db_record *rec, TDB_DATA data, int flag)
-{
- return NT_STATUS_MEDIA_WRITE_PROTECTED;
-}
-
-static NTSTATUS db_tdb_delete_deny(struct db_record *rec)
-{
- return NT_STATUS_MEDIA_WRITE_PROTECTED;
-}
-
-static int db_tdb_traverse_read_func(TDB_CONTEXT *tdb, TDB_DATA kbuf, TDB_DATA dbuf,
- void *private_data)
-{
- struct db_tdb_traverse_ctx *ctx =
- (struct db_tdb_traverse_ctx *)private_data;
- struct db_record rec;
-
- rec.key = kbuf;
- rec.value = dbuf;
- rec.store = db_tdb_store_deny;
- rec.delete_rec = db_tdb_delete_deny;
- rec.private_data = ctx->db->private_data;
- rec.db = ctx->db;
-
- return ctx->f(&rec, ctx->private_data);
-}
-
-static int db_tdb_traverse_read(struct db_context *db,
- int (*f)(struct db_record *rec, void *private_data),
- void *private_data)
-{
- struct db_tdb_ctx *db_ctx =
- talloc_get_type_abort(db->private_data, struct db_tdb_ctx);
- struct db_tdb_traverse_ctx ctx;
-
- ctx.db = db;
- ctx.f = f;
- ctx.private_data = private_data;
- return tdb_traverse_read(db_ctx->wtdb->tdb, db_tdb_traverse_read_func, &ctx);
-}
-
-static int db_tdb_get_seqnum(struct db_context *db)
-
-{
- struct db_tdb_ctx *db_ctx =
- talloc_get_type_abort(db->private_data, struct db_tdb_ctx);
- return tdb_get_seqnum(db_ctx->wtdb->tdb);
-}
-
-static int db_tdb_get_flags(struct db_context *db)
-
-{
- struct db_tdb_ctx *db_ctx =
- talloc_get_type_abort(db->private_data, struct db_tdb_ctx);
- return tdb_get_flags(db_ctx->wtdb->tdb);
-}
-
-static int db_tdb_transaction_start(struct db_context *db)
-{
- struct db_tdb_ctx *db_ctx =
- talloc_get_type_abort(db->private_data, struct db_tdb_ctx);
- return tdb_transaction_start(db_ctx->wtdb->tdb) ? -1 : 0;
-}
-
-static int db_tdb_transaction_commit(struct db_context *db)
-{
- struct db_tdb_ctx *db_ctx =
- talloc_get_type_abort(db->private_data, struct db_tdb_ctx);
- return tdb_transaction_commit(db_ctx->wtdb->tdb) ? -1 : 0;
-}
-
-static int db_tdb_transaction_cancel(struct db_context *db)
-{
- struct db_tdb_ctx *db_ctx =
- talloc_get_type_abort(db->private_data, struct db_tdb_ctx);
- tdb_transaction_cancel(db_ctx->wtdb->tdb);
- return 0;
-}
-
-static void db_tdb_id(struct db_context *db, const uint8_t **id, size_t *idlen)
-{
- struct db_tdb_ctx *db_ctx =
- talloc_get_type_abort(db->private_data, struct db_tdb_ctx);
- *id = (uint8_t *)&db_ctx->id;
- *idlen = sizeof(db_ctx->id);
-}
-
-struct db_context *db_open_tdb(TALLOC_CTX *mem_ctx,
- struct loadparm_context *lp_ctx,
- const char *name,
- int hash_size, int tdb_flags,
- int open_flags, mode_t mode,
- enum dbwrap_lock_order lock_order)
-{
- struct db_context *result = NULL;
- struct db_tdb_ctx *db_tdb;
- struct stat st;
-
- result = talloc_zero(mem_ctx, struct db_context);
- if (result == NULL) {
- DEBUG(0, ("talloc failed\n"));
- goto fail;
- }
-
- result->private_data = db_tdb = talloc(result, struct db_tdb_ctx);
- if (db_tdb == NULL) {
- DEBUG(0, ("talloc failed\n"));
- goto fail;
- }
- result->lock_order = lock_order;
-
- db_tdb->wtdb = tdb_wrap_open(db_tdb, name, hash_size, tdb_flags,
- open_flags, mode, lp_ctx);
- if (db_tdb->wtdb == NULL) {
- DEBUG(3, ("Could not open tdb: %s\n", strerror(errno)));
- goto fail;
- }
-
- ZERO_STRUCT(db_tdb->id);
-
- if (fstat(tdb_fd(db_tdb->wtdb->tdb), &st) == -1) {
- DEBUG(3, ("fstat failed: %s\n", strerror(errno)));
- goto fail;
- }
- db_tdb->id.dev = st.st_dev;
- db_tdb->id.ino = st.st_ino;
-
- result->fetch_locked = db_tdb_fetch_locked;
- result->try_fetch_locked = db_tdb_try_fetch_locked;
- result->traverse = db_tdb_traverse;
- result->traverse_read = db_tdb_traverse_read;
- result->parse_record = db_tdb_parse;
- result->get_seqnum = db_tdb_get_seqnum;
- result->get_flags = db_tdb_get_flags;
- result->persistent = ((tdb_flags & TDB_CLEAR_IF_FIRST) == 0);
- result->transaction_start = db_tdb_transaction_start;
- result->transaction_commit = db_tdb_transaction_commit;
- result->transaction_cancel = db_tdb_transaction_cancel;
- result->exists = db_tdb_exists;
- result->wipe = db_tdb_wipe;
- result->id = db_tdb_id;
- result->stored_callback = NULL;
- return result;
-
- fail:
- if (result != NULL) {
- TALLOC_FREE(result);
- }
- return NULL;
-}