1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "apr_portable.h"
18 #include "apr_strings.h"
19 #include "apr_arch_dso.h"
20 #include <errno.h>
21 #include <string.h>
22
23 #if APR_HAS_DSO
24
apr_os_dso_handle_put(apr_dso_handle_t ** aprdso,apr_os_dso_handle_t osdso,apr_pool_t * pool)25 APR_DECLARE(apr_status_t) apr_os_dso_handle_put(apr_dso_handle_t **aprdso,
26 apr_os_dso_handle_t osdso,
27 apr_pool_t *pool)
28 {
29 *aprdso = apr_pcalloc(pool, sizeof **aprdso);
30 (*aprdso)->handle = osdso;
31 (*aprdso)->pool = pool;
32 return APR_SUCCESS;
33 }
34
apr_os_dso_handle_get(apr_os_dso_handle_t * osdso,apr_dso_handle_t * aprdso)35 APR_DECLARE(apr_status_t) apr_os_dso_handle_get(apr_os_dso_handle_t *osdso,
36 apr_dso_handle_t *aprdso)
37 {
38 *osdso = aprdso->handle;
39 return APR_SUCCESS;
40 }
41
dso_cleanup(void * thedso)42 static apr_status_t dso_cleanup(void *thedso)
43 {
44 apr_dso_handle_t *dso = thedso;
45 int rc;
46
47 if (dso->handle == 0)
48 return APR_SUCCESS;
49
50 rc = dllfree(dso->handle);
51
52 if (rc == 0) {
53 dso->handle = 0;
54 return APR_SUCCESS;
55 }
56 dso->failing_errno = errno;
57 return errno;
58 }
59
apr_dso_load(apr_dso_handle_t ** res_handle,const char * path,apr_pool_t * ctx)60 APR_DECLARE(apr_status_t) apr_dso_load(apr_dso_handle_t **res_handle,
61 const char *path, apr_pool_t *ctx)
62 {
63 dllhandle *handle;
64 int rc;
65
66 *res_handle = apr_pcalloc(ctx, sizeof(**res_handle));
67 (*res_handle)->pool = ctx;
68 if ((handle = dllload(path)) != NULL) {
69 (*res_handle)->handle = handle;
70 apr_pool_cleanup_register(ctx, *res_handle, dso_cleanup, apr_pool_cleanup_null);
71 return APR_SUCCESS;
72 }
73
74 (*res_handle)->failing_errno = errno;
75 return APR_EDSOOPEN;
76 }
77
apr_dso_unload(apr_dso_handle_t * handle)78 APR_DECLARE(apr_status_t) apr_dso_unload(apr_dso_handle_t *handle)
79 {
80 return apr_pool_cleanup_run(handle->pool, handle, dso_cleanup);
81 }
82
apr_dso_sym(apr_dso_handle_sym_t * ressym,apr_dso_handle_t * handle,const char * symname)83 APR_DECLARE(apr_status_t) apr_dso_sym(apr_dso_handle_sym_t *ressym,
84 apr_dso_handle_t *handle,
85 const char *symname)
86 {
87 void *func_ptr;
88 void *var_ptr;
89
90 if ((var_ptr = dllqueryvar(handle->handle, symname)) != NULL) {
91 *ressym = var_ptr;
92 return APR_SUCCESS;
93 }
94 if ((func_ptr = (void *)dllqueryfn(handle->handle, symname)) != NULL) {
95 *ressym = func_ptr;
96 return APR_SUCCESS;
97 }
98 handle->failing_errno = errno;
99 return APR_ESYMNOTFOUND;
100 }
101
apr_dso_error(apr_dso_handle_t * handle,char * buffer,apr_size_t buflen)102 APR_DECLARE(const char *) apr_dso_error(apr_dso_handle_t *handle, char *buffer,
103 apr_size_t buflen)
104 {
105 apr_cpystrn(buffer, strerror(handle->failing_errno), buflen);
106 return buffer;
107 }
108
109 #endif
110