+++ /dev/null
-/*
- Unix SMB/CIFS implementation.
- Utility functions for the dbwrap API
- Copyright (C) Volker Lendecke 2007
- Copyright (C) Michael Adam 2009
-
- 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 2 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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-#include "includes.h"
-#include "dbwrap.h"
-#include "util_tdb.h"
-
-int32_t dbwrap_fetch_int32(struct db_context *db, const char *keystr)
-{
- TDB_DATA dbuf;
- int32 ret;
-
- if (db->fetch(db, NULL, string_term_tdb_data(keystr), &dbuf) != 0) {
- return -1;
- }
-
- if ((dbuf.dptr == NULL) || (dbuf.dsize != sizeof(int32_t))) {
- TALLOC_FREE(dbuf.dptr);
- return -1;
- }
-
- ret = IVAL(dbuf.dptr, 0);
- TALLOC_FREE(dbuf.dptr);
- return ret;
-}
-
-int dbwrap_store_int32(struct db_context *db, const char *keystr, int32_t v)
-{
- struct db_record *rec;
- int32 v_store;
- NTSTATUS status;
-
- rec = db->fetch_locked(db, NULL, string_term_tdb_data(keystr));
- if (rec == NULL) {
- return -1;
- }
-
- SIVAL(&v_store, 0, v);
-
- status = rec->store(rec, make_tdb_data((const uint8 *)&v_store,
- sizeof(v_store)),
- TDB_REPLACE);
- TALLOC_FREE(rec);
- return NT_STATUS_IS_OK(status) ? 0 : -1;
-}
-
-bool dbwrap_fetch_uint32(struct db_context *db, const char *keystr,
- uint32_t *val)
-{
- TDB_DATA dbuf;
-
- if (db->fetch(db, NULL, string_term_tdb_data(keystr), &dbuf) != 0) {
- return false;
- }
-
- if ((dbuf.dptr == NULL) || (dbuf.dsize != sizeof(uint32_t))) {
- TALLOC_FREE(dbuf.dptr);
- return false;
- }
-
- *val = IVAL(dbuf.dptr, 0);
- TALLOC_FREE(dbuf.dptr);
- return true;
-}
-
-int dbwrap_store_uint32(struct db_context *db, const char *keystr, uint32_t v)
-{
- struct db_record *rec;
- uint32 v_store;
- NTSTATUS status;
-
- rec = db->fetch_locked(db, NULL, string_term_tdb_data(keystr));
- if (rec == NULL) {
- return -1;
- }
-
- SIVAL(&v_store, 0, v);
-
- status = rec->store(rec, make_tdb_data((const uint8 *)&v_store,
- sizeof(v_store)),
- TDB_REPLACE);
- TALLOC_FREE(rec);
- return NT_STATUS_IS_OK(status) ? 0 : -1;
-}
-
-/**
- * Atomic unsigned integer change (addition):
- *
- * if value does not exist yet in the db, use *oldval as initial old value.
- * return old value in *oldval.
- * store *oldval + change_val to db.
- */
-
-struct dbwrap_change_uint32_atomic_context {
- const char *keystr;
- uint32_t *oldval;
- uint32_t change_val;
-};
-
-static NTSTATUS dbwrap_change_uint32_atomic_action(struct db_context *db,
- void *private_data)
-{
- struct db_record *rec;
- uint32_t val = (uint32_t)-1;
- uint32_t v_store;
- NTSTATUS ret;
- struct dbwrap_change_uint32_atomic_context *state;
-
- state = (struct dbwrap_change_uint32_atomic_context *)private_data;
-
- rec = db->fetch_locked(db, NULL, string_term_tdb_data(state->keystr));
- if (!rec) {
- return NT_STATUS_UNSUCCESSFUL;
- }
-
- if (rec->value.dptr == NULL) {
- val = *(state->oldval);
- } else if (rec->value.dsize == sizeof(val)) {
- val = IVAL(rec->value.dptr, 0);
- *(state->oldval) = val;
- } else {
- ret = NT_STATUS_UNSUCCESSFUL;
- goto done;
- }
-
- val += state->change_val;
-
- SIVAL(&v_store, 0, val);
-
- ret = rec->store(rec,
- make_tdb_data((const uint8 *)&v_store,
- sizeof(v_store)),
- TDB_REPLACE);
-
-done:
- TALLOC_FREE(rec);
- return ret;
-}
-
-NTSTATUS dbwrap_change_uint32_atomic(struct db_context *db, const char *keystr,
- uint32_t *oldval, uint32_t change_val)
-{
- NTSTATUS ret;
- struct dbwrap_change_uint32_atomic_context state;
-
- state.keystr = keystr;
- state.oldval = oldval;
- state.change_val = change_val;
-
- ret = dbwrap_change_uint32_atomic_action(db, &state);
-
- return ret;
-}
-
-NTSTATUS dbwrap_trans_change_uint32_atomic(struct db_context *db,
- const char *keystr,
- uint32_t *oldval,
- uint32_t change_val)
-{
- NTSTATUS ret;
- struct dbwrap_change_uint32_atomic_context state;
-
- state.keystr = keystr;
- state.oldval = oldval;
- state.change_val = change_val;
-
- ret = dbwrap_trans_do(db, dbwrap_change_uint32_atomic_action, &state);
-
- return ret;
-}
-
-/**
- * Atomic integer change (addition):
- *
- * if value does not exist yet in the db, use *oldval as initial old value.
- * return old value in *oldval.
- * store *oldval + change_val to db.
- */
-
-struct dbwrap_change_int32_atomic_context {
- const char *keystr;
- int32_t *oldval;
- int32_t change_val;
-};
-
-static NTSTATUS dbwrap_change_int32_atomic_action(struct db_context *db,
- void *private_data)
-{
- struct db_record *rec;
- int32_t val = -1;
- int32_t v_store;
- NTSTATUS ret;
- struct dbwrap_change_int32_atomic_context *state;
-
- state = (struct dbwrap_change_int32_atomic_context *)private_data;
-
- rec = db->fetch_locked(db, NULL, string_term_tdb_data(state->keystr));
- if (!rec) {
- return NT_STATUS_UNSUCCESSFUL;
- }
-
- if (rec->value.dptr == NULL) {
- val = *(state->oldval);
- } else if (rec->value.dsize == sizeof(val)) {
- val = IVAL(rec->value.dptr, 0);
- *(state->oldval) = val;
- } else {
- ret = NT_STATUS_UNSUCCESSFUL;
- goto done;
- }
-
- val += state->change_val;
-
- SIVAL(&v_store, 0, val);
-
- ret = rec->store(rec,
- make_tdb_data((const uint8_t *)&v_store,
- sizeof(v_store)),
- TDB_REPLACE);
-
-done:
- TALLOC_FREE(rec);
- return ret;
-}
-
-NTSTATUS dbwrap_change_int32_atomic(struct db_context *db, const char *keystr,
- int32_t *oldval, int32_t change_val)
-{
- NTSTATUS ret;
- struct dbwrap_change_int32_atomic_context state;
-
- state.keystr = keystr;
- state.oldval = oldval;
- state.change_val = change_val;
-
- ret = dbwrap_change_int32_atomic_action(db, &state);
-
- return ret;
-}
-
-NTSTATUS dbwrap_trans_change_int32_atomic(struct db_context *db,
- const char *keystr,
- int32_t *oldval,
- int32_t change_val)
-{
- NTSTATUS ret;
- struct dbwrap_change_int32_atomic_context state;
-
- state.keystr = keystr;
- state.oldval = oldval;
- state.change_val = change_val;
-
- ret = dbwrap_trans_do(db, dbwrap_change_int32_atomic_action, &state);
-
- return ret;
-}
-
-struct dbwrap_store_context {
- TDB_DATA *key;
- TDB_DATA *dbuf;
- int flag;
-};
-
-static NTSTATUS dbwrap_store_action(struct db_context *db, void *private_data)
-{
- struct db_record *rec = NULL;
- NTSTATUS status;
- struct dbwrap_store_context *store_ctx;
-
- store_ctx = (struct dbwrap_store_context *)private_data;
-
- rec = db->fetch_locked(db, talloc_tos(), *(store_ctx->key));
- if (rec == NULL) {
- DEBUG(5, ("fetch_locked failed\n"));
- return NT_STATUS_NO_MEMORY;
- }
-
- status = rec->store(rec, *(store_ctx->dbuf), store_ctx->flag);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(5, ("store returned %s\n", nt_errstr(status)));
- }
-
- TALLOC_FREE(rec);
- return status;
-}
-
-NTSTATUS dbwrap_trans_store(struct db_context *db, TDB_DATA key, TDB_DATA dbuf,
- int flag)
-{
- NTSTATUS status;
- struct dbwrap_store_context store_ctx;
-
- store_ctx.key = &key;
- store_ctx.dbuf = &dbuf;
- store_ctx.flag = flag;
-
- status = dbwrap_trans_do(db, dbwrap_store_action, &store_ctx);
-
- return status;
-}
-
-static NTSTATUS dbwrap_delete_action(struct db_context * db, void *private_data)
-{
- NTSTATUS status;
- struct db_record *rec;
- TDB_DATA *key = (TDB_DATA *)private_data;
-
- rec = db->fetch_locked(db, talloc_tos(), *key);
- if (rec == NULL) {
- DEBUG(5, ("fetch_locked failed\n"));
- return NT_STATUS_NO_MEMORY;
- }
-
- status = rec->delete_rec(rec);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(5, ("delete_rec returned %s\n", nt_errstr(status)));
- }
-
- talloc_free(rec);
- return status;
-}
-
-NTSTATUS dbwrap_trans_delete(struct db_context *db, TDB_DATA key)
-{
- NTSTATUS status;
-
- status = dbwrap_trans_do(db, dbwrap_delete_action, &key);
-
- return status;
-}
-
-NTSTATUS dbwrap_trans_store_int32(struct db_context *db, const char *keystr,
- int32_t v)
-{
- int32 v_store;
-
- SIVAL(&v_store, 0, v);
-
- return dbwrap_trans_store(db, string_term_tdb_data(keystr),
- make_tdb_data((const uint8 *)&v_store,
- sizeof(v_store)),
- TDB_REPLACE);
-}
-
-NTSTATUS dbwrap_trans_store_uint32(struct db_context *db, const char *keystr,
- uint32_t v)
-{
- uint32 v_store;
-
- SIVAL(&v_store, 0, v);
-
- return dbwrap_trans_store(db, string_term_tdb_data(keystr),
- make_tdb_data((const uint8 *)&v_store,
- sizeof(v_store)),
- TDB_REPLACE);
-}
-
-NTSTATUS dbwrap_trans_store_bystring(struct db_context *db, const char *key,
- TDB_DATA data, int flags)
-{
- return dbwrap_trans_store(db, string_term_tdb_data(key), data, flags);
-}
-
-NTSTATUS dbwrap_trans_delete_bystring(struct db_context *db, const char *key)
-{
- return dbwrap_trans_delete(db, string_term_tdb_data(key));
-}
-
-/**
- * Wrap db action(s) into a transaction.
- */
-NTSTATUS dbwrap_trans_do(struct db_context *db,
- NTSTATUS (*action)(struct db_context *, void *),
- void *private_data)
-{
- int res;
- NTSTATUS status;
-
- res = db->transaction_start(db);
- if (res != 0) {
- DEBUG(5, ("transaction_start failed\n"));
- return NT_STATUS_INTERNAL_DB_CORRUPTION;
- }
-
- status = action(db, private_data);
- if (!NT_STATUS_IS_OK(status)) {
- if (db->transaction_cancel(db) != 0) {
- smb_panic("Cancelling transaction failed");
- }
- return status;
- }
-
- res = db->transaction_commit(db);
- if (res == 0) {
- return NT_STATUS_OK;
- }
-
- DEBUG(2, ("transaction_commit failed\n"));
- return NT_STATUS_INTERNAL_DB_CORRUPTION;
-}
-
-struct dbwrap_trans_traverse_action_ctx {
- int (*f)(struct db_record* rec, void* private_data);
- void* private_data;
-};
-
-
-static NTSTATUS dbwrap_trans_traverse_action(struct db_context* db, void* private_data)
-{
- struct dbwrap_trans_traverse_action_ctx* ctx =
- (struct dbwrap_trans_traverse_action_ctx*)private_data;
-
- int ret = db->traverse(db, ctx->f, ctx->private_data);
-
- return (ret == -1) ? NT_STATUS_INTERNAL_DB_CORRUPTION : NT_STATUS_OK;
-}
-
-NTSTATUS dbwrap_trans_traverse(struct db_context *db,
- int (*f)(struct db_record*, void*),
- void *private_data)
-{
- struct dbwrap_trans_traverse_action_ctx ctx = {
- .f = f,
- .private_data = private_data,
- };
- return dbwrap_trans_do(db, dbwrap_trans_traverse_action, &ctx);
-}
-
-NTSTATUS dbwrap_traverse(struct db_context *db,
- int (*f)(struct db_record*, void*),
- void *private_data,
- int *count)
-{
- int ret = db->traverse(db, f, private_data);
-
- if (ret < 0) {
- return NT_STATUS_INTERNAL_DB_CORRUPTION;
- }
-
- if (count != NULL) {
- *count = ret;
- }
-
- return NT_STATUS_OK;
-}
-
-NTSTATUS dbwrap_delete_bystring_upper(struct db_context *db, const char *key)
-{
- char *key_upper;
- NTSTATUS status;
-
- key_upper = talloc_strdup_upper(talloc_tos(), key);
- if (key_upper == NULL) {
- return NT_STATUS_NO_MEMORY;
- }
-
- status = dbwrap_delete_bystring(db, key_upper);
-
- talloc_free(key_upper);
- return status;
-}
-
-NTSTATUS dbwrap_store_bystring_upper(struct db_context *db, const char *key,
- TDB_DATA data, int flags)
-{
- char *key_upper;
- NTSTATUS status;
-
- key_upper = talloc_strdup_upper(talloc_tos(), key);
- if (key_upper == NULL) {
- return NT_STATUS_NO_MEMORY;
- }
-
- status = dbwrap_store_bystring(db, key_upper, data, flags);
-
- talloc_free(key_upper);
- return status;
-}
-
-TDB_DATA dbwrap_fetch_bystring_upper(struct db_context *db, TALLOC_CTX *mem_ctx,
- const char *key)
-{
- char *key_upper;
- TDB_DATA result;
-
- key_upper = talloc_strdup_upper(talloc_tos(), key);
- if (key_upper == NULL) {
- return make_tdb_data(NULL, 0);
- }
-
- result = dbwrap_fetch_bystring(db, mem_ctx, key_upper);
-
- talloc_free(key_upper);
- return result;
-}
git.samba.org / abartlet / samba-debian.git / blobdiff