--- /dev/null
+/* Copyright 2000-2005 The Apache Software Foundation or its licensors, as
+ * applicable.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "apr_strings.h"
+#define APR_WANT_MEMFUNC
+#define APR_WANT_STRFUNC
+#include "apr_want.h"
+
+#include "apu.h"
+
+#if APU_HAVE_SDBM
+
+#include "apr_dbm_private.h"
+
+#include "apr_sdbm.h"
+#if APR_HAVE_STDLIB_H
+#include <stdlib.h> /* For abort() */
+#endif
+
+/* this is used in a few places to define a noop "function". it is needed
+ to stop "no effect" warnings from GCC. */
+#define NOOP_FUNCTION if (0) ; else
+
+/* ### define defaults for now; these will go away in a while */
+#define REGISTER_CLEANUP(dbm, pdatum) NOOP_FUNCTION
+#define SET_FILE(pdb, f) ((pdb)->file = (f))
+
+typedef apr_sdbm_t *real_file_t;
+
+typedef apr_sdbm_datum_t cvt_datum_t;
+#define CONVERT_DATUM(cvt, pinput) ((cvt).dptr = (pinput)->dptr, (cvt).dsize = (pinput)->dsize)
+
+typedef apr_sdbm_datum_t result_datum_t;
+#define RETURN_DATUM(poutput, rd) ((poutput)->dptr = (rd).dptr, (poutput)->dsize = (rd).dsize)
+
+#define APR_DBM_CLOSE(f) apr_sdbm_close(f)
+#define APR_DBM_FETCH(f, k, v) apr_sdbm_fetch(f, &(v), (k))
+#define APR_DBM_STORE(f, k, v) apr_sdbm_store(f, (k), (v), APR_SDBM_REPLACE)
+#define APR_DBM_DELETE(f, k) apr_sdbm_delete(f, (k))
+#define APR_DBM_FIRSTKEY(f, k) apr_sdbm_firstkey(f, &(k))
+#define APR_DBM_NEXTKEY(f, k, nk) apr_sdbm_nextkey(f, &(nk))
+#define APR_DBM_FREEDPTR(dptr) NOOP_FUNCTION
+
+#define APR_DBM_DBMODE_RO APR_READ
+#define APR_DBM_DBMODE_RW (APR_READ | APR_WRITE)
+#define APR_DBM_DBMODE_RWCREATE (APR_READ | APR_WRITE | APR_CREATE)
+#define APR_DBM_DBMODE_RWTRUNC (APR_READ | APR_WRITE | APR_CREATE | \
+ APR_TRUNCATE)
+
+static apr_status_t set_error(apr_dbm_t *dbm, apr_status_t dbm_said)
+{
+ apr_status_t rv = APR_SUCCESS;
+
+ /* ### ignore whatever the DBM said (dbm_said); ask it explicitly */
+
+ if ((dbm->errcode = dbm_said) == APR_SUCCESS) {
+ dbm->errmsg = NULL;
+ }
+ else {
+ dbm->errmsg = "I/O error occurred.";
+ rv = APR_EGENERAL; /* ### need something better */
+ }
+
+ return rv;
+}
+
+/* --------------------------------------------------------------------------
+**
+** DEFINE THE VTABLE FUNCTIONS FOR SDBM
+*/
+
+static apr_status_t vt_sdbm_open(apr_dbm_t **pdb, const char *pathname,
+ apr_int32_t mode, apr_fileperms_t perm,
+ apr_pool_t *pool)
+{
+ real_file_t file;
+ int dbmode;
+
+ *pdb = NULL;
+
+ switch (mode) {
+ case APR_DBM_READONLY:
+ dbmode = APR_DBM_DBMODE_RO;
+ break;
+ case APR_DBM_READWRITE:
+ dbmode = APR_DBM_DBMODE_RW;
+ break;
+ case APR_DBM_RWCREATE:
+ dbmode = APR_DBM_DBMODE_RWCREATE;
+ break;
+ case APR_DBM_RWTRUNC:
+ dbmode = APR_DBM_DBMODE_RWTRUNC;
+ break;
+ default:
+ return APR_EINVAL;
+ }
+
+ {
+ apr_status_t rv;
+
+ rv = apr_sdbm_open(&file, pathname, dbmode, perm, pool);
+ if (rv != APR_SUCCESS)
+ return rv;
+ }
+
+ /* we have an open database... return it */
+ *pdb = apr_pcalloc(pool, sizeof(**pdb));
+ (*pdb)->pool = pool;
+ (*pdb)->type = &apr_dbm_type_sdbm;
+ SET_FILE(*pdb, file);
+
+ /* ### register a cleanup to close the DBM? */
+
+ return APR_SUCCESS;
+}
+
+static void vt_sdbm_close(apr_dbm_t *dbm)
+{
+ APR_DBM_CLOSE(dbm->file);
+}
+
+static apr_status_t vt_sdbm_fetch(apr_dbm_t *dbm, apr_datum_t key,
+ apr_datum_t * pvalue)
+{
+ apr_status_t rv;
+ cvt_datum_t ckey;
+ result_datum_t rd;
+
+ CONVERT_DATUM(ckey, &key);
+ rv = APR_DBM_FETCH(dbm->file, ckey, rd);
+ RETURN_DATUM(pvalue, rd);
+
+ REGISTER_CLEANUP(dbm, pvalue);
+
+ /* store the error info into DBM, and return a status code. Also, note
+ that *pvalue should have been cleared on error. */
+ return set_error(dbm, rv);
+}
+
+static apr_status_t vt_sdbm_store(apr_dbm_t *dbm, apr_datum_t key,
+ apr_datum_t value)
+{
+ apr_status_t rv;
+ cvt_datum_t ckey;
+ cvt_datum_t cvalue;
+
+ CONVERT_DATUM(ckey, &key);
+ CONVERT_DATUM(cvalue, &value);
+ rv = APR_DBM_STORE(dbm->file, ckey, cvalue);
+
+ /* store any error info into DBM, and return a status code. */
+ return set_error(dbm, rv);
+}
+
+static apr_status_t vt_sdbm_del(apr_dbm_t *dbm, apr_datum_t key)
+{
+ apr_status_t rv;
+ cvt_datum_t ckey;
+
+ CONVERT_DATUM(ckey, &key);
+ rv = APR_DBM_DELETE(dbm->file, ckey);
+
+ /* store any error info into DBM, and return a status code. */
+ return set_error(dbm, rv);
+}
+
+static int vt_sdbm_exists(apr_dbm_t *dbm, apr_datum_t key)
+{
+ int exists;
+ apr_sdbm_datum_t ckey;
+
+ CONVERT_DATUM(ckey, &key);
+
+ {
+ apr_sdbm_datum_t value;
+ if (apr_sdbm_fetch(dbm->file, &value, ckey) != APR_SUCCESS) {
+ exists = 0;
+ }
+ else
+ exists = value.dptr != NULL;
+ }
+
+ return exists;
+}
+
+static apr_status_t vt_sdbm_firstkey(apr_dbm_t *dbm, apr_datum_t * pkey)
+{
+ apr_status_t rv;
+ result_datum_t rd;
+
+ rv = APR_DBM_FIRSTKEY(dbm->file, rd);
+ RETURN_DATUM(pkey, rd);
+
+ REGISTER_CLEANUP(dbm, pkey);
+
+ /* store any error info into DBM, and return a status code. */
+ return set_error(dbm, rv);
+}
+
+static apr_status_t vt_sdbm_nextkey(apr_dbm_t *dbm, apr_datum_t * pkey)
+{
+ apr_status_t rv;
+ cvt_datum_t ckey;
+ result_datum_t rd;
+
+ CONVERT_DATUM(ckey, pkey);
+ rv = APR_DBM_NEXTKEY(dbm->file, ckey, rd);
+ RETURN_DATUM(pkey, rd);
+
+ REGISTER_CLEANUP(dbm, pkey);
+
+ /* store any error info into DBM, and return a status code. */
+ return set_error(dbm, APR_SUCCESS);
+}
+
+static void vt_sdbm_freedatum(apr_dbm_t *dbm, apr_datum_t data)
+{
+ APR_DBM_FREEDPTR(data.dptr);
+}
+
+static void vt_sdbm_usednames(apr_pool_t *pool, const char *pathname,
+ const char **used1, const char **used2)
+{
+ char *work;
+
+ /* ### this could be optimized by computing strlen() once and using
+ ### memcpy and pmemdup instead. but why bother? */
+
+ *used1 = apr_pstrcat(pool, pathname, APR_SDBM_DIRFEXT, NULL);
+ *used2 = work = apr_pstrdup(pool, *used1);
+
+ /* we know the extension is 4 characters */
+ memcpy(&work[strlen(work) - 4], APR_SDBM_PAGFEXT, 4);
+}
+
+
+APU_DECLARE_DATA const apr_dbm_type_t apr_dbm_type_sdbm = {
+ "sdbm",
+
+ vt_sdbm_open,
+ vt_sdbm_close,
+ vt_sdbm_fetch,
+ vt_sdbm_store,
+ vt_sdbm_del,
+ vt_sdbm_exists,
+ vt_sdbm_firstkey,
+ vt_sdbm_nextkey,
+ vt_sdbm_freedatum,
+ vt_sdbm_usednames
+};
+
+#endif /* APU_HAVE_SDBM */
Code Review / bottlenecks.git / blobdiff