diff options
Diffstat (limited to 'rubbos/app/httpd-2.0.64/srclib/apr-util/dbm/apr_dbm_sdbm.c')
| -rw-r--r-- | rubbos/app/httpd-2.0.64/srclib/apr-util/dbm/apr_dbm_sdbm.c | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/rubbos/app/httpd-2.0.64/srclib/apr-util/dbm/apr_dbm_sdbm.c b/rubbos/app/httpd-2.0.64/srclib/apr-util/dbm/apr_dbm_sdbm.c new file mode 100644 index 00000000..dadb1e26 --- /dev/null +++ b/rubbos/app/httpd-2.0.64/srclib/apr-util/dbm/apr_dbm_sdbm.c @@ -0,0 +1,265 @@ +/* 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 */ |