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/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
#include "apr_strings.h"
#include "dso.h"
#include <errno.h>
#include <string.h>
#if APR_HAS_DSO
static apr_status_t dso_cleanup(void *thedso)
{
apr_dso_handle_t *dso = thedso;
int rc;
if (dso->handle == 0)
return APR_SUCCESS;
rc = dllfree(dso->handle);
if (rc == 0) {
dso->handle = 0;
return APR_SUCCESS;
}
dso->failing_errno = errno;
return errno;
}
APR_DECLARE(apr_status_t) apr_dso_load(apr_dso_handle_t **res_handle,
const char *path, apr_pool_t *ctx)
{
dllhandle *handle;
int rc;
*res_handle = apr_pcalloc(ctx, sizeof(*res_handle));
if ((handle = dllload(path)) != NULL) {
(*res_handle)->handle = handle;
apr_pool_cleanup_register(ctx, *res_handle, dso_cleanup, apr_pool_cleanup_null);
return APR_SUCCESS;
}
(*res_handle)->failing_errno = errno;
return errno;
}
APR_DECLARE(apr_status_t) apr_dso_unload(apr_dso_handle_t *handle)
{
return apr_pool_cleanup_run(handle->pool, handle, dso_cleanup);
}
APR_DECLARE(apr_status_t) apr_dso_sym(apr_dso_handle_sym_t *ressym,
apr_dso_handle_t *handle,
const char *symname)
{
void *func_ptr;
void *var_ptr;
if ((var_ptr = dllqueryvar(handle->handle, symname)) != NULL) {
*ressym = var_ptr;
return APR_SUCCESS;
}
if ((func_ptr = (void *)dllqueryfn(handle->handle, symname)) != NULL) {
*ressym = func_ptr;
return APR_SUCCESS;
}
handle->failing_errno = errno;
return errno;
}
APR_DECLARE(const char *) apr_dso_error(apr_dso_handle_t *handle, char *buffer,
apr_size_t buflen)
{
apr_cpystrn(buffer, strerror(handle->failing_errno), buflen);
return buffer;
}
#endif
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