--- /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"
+
+#if APR_HAVE_STDLIB_H
+#include <stdlib.h> /* for free() */
+#endif
+
+#include "apu.h"
+
+#if APU_HAVE_GDBM
+#include "apr_dbm_private.h"
+
+#include <gdbm.h>
+
+/* 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 GDBM_FILE real_file_t;
+
+typedef datum *cvt_datum_t;
+#define CONVERT_DATUM(cvt, pinput) ((cvt) = (datum *)(pinput))
+
+typedef datum result_datum_t;
+#define RETURN_DATUM(poutput, rd) (*(poutput) = *(apr_datum_t *)&(rd))
+
+#define APR_DBM_CLOSE(f) gdbm_close(f)
+#define APR_DBM_FETCH(f, k, v) ((v) = gdbm_fetch(f, *(k)), APR_SUCCESS)
+#define APR_DBM_STORE(f, k, v) g2s(gdbm_store(f, *(k), *(v), GDBM_REPLACE))
+#define APR_DBM_DELETE(f, k) g2s(gdbm_delete(f, *(k)))
+#define APR_DBM_FIRSTKEY(f, k) ((k) = gdbm_firstkey(f), APR_SUCCESS)
+#define APR_DBM_NEXTKEY(f, k, nk) ((nk) = gdbm_nextkey(f, *(k)), APR_SUCCESS)
+#define APR_DBM_FREEDPTR(dptr) ((dptr) ? free(dptr) : 0)
+
+#undef REGISTER_CLEANUP
+#define REGISTER_CLEANUP(dbm, pdatum) \
+ if ((pdatum)->dptr) \
+ apr_pool_cleanup_register((dbm)->pool, (pdatum)->dptr, \
+ datum_cleanup, apr_pool_cleanup_null); \
+ else
+
+#define APR_DBM_DBMODE_RO GDBM_READER
+#define APR_DBM_DBMODE_RW GDBM_WRITER
+#define APR_DBM_DBMODE_RWCREATE GDBM_WRCREAT
+#define APR_DBM_DBMODE_RWTRUNC GDBM_NEWDB
+
+/* map a GDBM error to an apr_status_t */
+static apr_status_t g2s(int gerr)
+{
+ if (gerr == -1) {
+ /* ### need to fix this */
+ return APR_EGENERAL;
+ }
+
+ return APR_SUCCESS;
+}
+
+static apr_status_t datum_cleanup(void *dptr)
+{
+ if (dptr)
+ free(dptr);
+
+ return APR_SUCCESS;
+}
+
+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 = gdbm_errno) == GDBM_NO_ERROR) {
+ dbm->errmsg = NULL;
+ }
+ else {
+ dbm->errmsg = gdbm_strerror(gdbm_errno);
+ rv = APR_EGENERAL; /* ### need something better */
+ }
+
+ /* captured it. clear it now. */
+ gdbm_errno = GDBM_NO_ERROR;
+
+ return rv;
+}
+
+/* --------------------------------------------------------------------------
+**
+** DEFINE THE VTABLE FUNCTIONS FOR GDBM
+*/
+
+static apr_status_t vt_gdbm_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;
+ }
+
+ {
+ /* Note: stupid cast to get rid of "const" on the pathname */
+ file = gdbm_open((char *) pathname, 0, dbmode,
+ apr_posix_perms2mode(perm), NULL);
+ if (file == NULL)
+ return APR_EGENERAL; /* ### need a better error */
+ }
+
+ /* we have an open database... return it */
+ *pdb = apr_pcalloc(pool, sizeof(**pdb));
+ (*pdb)->pool = pool;
+ (*pdb)->type = &apr_dbm_type_gdbm;
+ SET_FILE(*pdb, file);
+
+ /* ### register a cleanup to close the DBM? */
+
+ return APR_SUCCESS;
+}
+
+static void vt_gdbm_close(apr_dbm_t *dbm)
+{
+ APR_DBM_CLOSE(dbm->file);
+}
+
+static apr_status_t vt_gdbm_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_gdbm_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_gdbm_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_gdbm_exists(apr_dbm_t *dbm, apr_datum_t key)
+{
+ datum *ckey = (datum *)&key;
+
+ return gdbm_exists(dbm->file, *ckey) != 0;
+}
+
+static apr_status_t vt_gdbm_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_gdbm_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_gdbm_freedatum(apr_dbm_t *dbm, apr_datum_t data)
+{
+ (void) apr_pool_cleanup_run(dbm->pool, data.dptr, datum_cleanup);
+}
+
+static void vt_gdbm_usednames(apr_pool_t *pool, const char *pathname,
+ const char **used1, const char **used2)
+{
+ *used1 = apr_pstrdup(pool, pathname);
+ *used2 = NULL;
+}
+
+
+APU_DECLARE_DATA const apr_dbm_type_t apr_dbm_type_gdbm = {
+ "gdbm",
+
+ vt_gdbm_open,
+ vt_gdbm_close,
+ vt_gdbm_fetch,
+ vt_gdbm_store,
+ vt_gdbm_del,
+ vt_gdbm_exists,
+ vt_gdbm_firstkey,
+ vt_gdbm_nextkey,
+ vt_gdbm_freedatum,
+ vt_gdbm_usednames
+};
+
+#endif /* APU_HAVE_GDBM */
Code Review / bottlenecks.git / blobdiff