2 * Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 /* This must be the first #include file */
11 #include "async_local.h"
13 #include <openssl/err.h>
15 ASYNC_WAIT_CTX *ASYNC_WAIT_CTX_new(void)
17 return OPENSSL_zalloc(sizeof(ASYNC_WAIT_CTX));
20 void ASYNC_WAIT_CTX_free(ASYNC_WAIT_CTX *ctx)
22 struct fd_lookup_st *curr;
23 struct fd_lookup_st *next;
29 while (curr != NULL) {
31 /* Only try and cleanup if it hasn't been marked deleted */
32 if (curr->cleanup != NULL)
33 curr->cleanup(ctx, curr->key, curr->fd, curr->custom_data);
35 /* Always free the fd_lookup_st */
43 int ASYNC_WAIT_CTX_set_wait_fd(ASYNC_WAIT_CTX *ctx, const void *key,
44 OSSL_ASYNC_FD fd, void *custom_data,
45 void (*cleanup)(ASYNC_WAIT_CTX *, const void *,
46 OSSL_ASYNC_FD, void *))
48 struct fd_lookup_st *fdlookup;
50 if ((fdlookup = OPENSSL_zalloc(sizeof(*fdlookup))) == NULL)
55 fdlookup->custom_data = custom_data;
56 fdlookup->cleanup = cleanup;
58 fdlookup->next = ctx->fds;
64 int ASYNC_WAIT_CTX_get_fd(ASYNC_WAIT_CTX *ctx, const void *key,
65 OSSL_ASYNC_FD *fd, void **custom_data)
67 struct fd_lookup_st *curr;
70 while (curr != NULL) {
72 /* This one has been marked deleted so do nothing */
76 if (curr->key == key) {
78 *custom_data = curr->custom_data;
86 int ASYNC_WAIT_CTX_get_all_fds(ASYNC_WAIT_CTX *ctx, OSSL_ASYNC_FD *fd,
89 struct fd_lookup_st *curr;
93 while (curr != NULL) {
95 /* This one has been marked deleted so do nothing */
109 int ASYNC_WAIT_CTX_get_changed_fds(ASYNC_WAIT_CTX *ctx, OSSL_ASYNC_FD *addfd,
110 size_t *numaddfds, OSSL_ASYNC_FD *delfd,
113 struct fd_lookup_st *curr;
115 *numaddfds = ctx->numadd;
116 *numdelfds = ctx->numdel;
117 if (addfd == NULL && delfd == NULL)
122 while (curr != NULL) {
123 /* We ignore fds that have been marked as both added and deleted */
124 if (curr->del && !curr->add && (delfd != NULL)) {
128 if (curr->add && !curr->del && (addfd != NULL)) {
138 int ASYNC_WAIT_CTX_clear_fd(ASYNC_WAIT_CTX *ctx, const void *key)
140 struct fd_lookup_st *curr, *prev;
144 while (curr != NULL) {
145 if (curr->del == 1) {
146 /* This one has been marked deleted already so do nothing */
151 if (curr->key == key) {
152 /* If fd has just been added, remove it from the list */
153 if (curr->add == 1) {
154 if (ctx->fds == curr) {
155 ctx->fds = curr->next;
157 prev->next = curr->next;
160 /* It is responsibility of the caller to cleanup before calling
161 * ASYNC_WAIT_CTX_clear_fd
169 * Mark it as deleted. We don't call cleanup if explicitly asked
170 * to clear an fd. We assume the caller is going to do that (if
183 int ASYNC_WAIT_CTX_set_callback(ASYNC_WAIT_CTX *ctx,
184 ASYNC_callback_fn callback,
190 ctx->callback = callback;
191 ctx->callback_arg = callback_arg;
195 int ASYNC_WAIT_CTX_get_callback(ASYNC_WAIT_CTX *ctx,
196 ASYNC_callback_fn *callback,
199 if (ctx->callback == NULL)
202 *callback = ctx->callback;
203 *callback_arg = ctx->callback_arg;
207 int ASYNC_WAIT_CTX_set_status(ASYNC_WAIT_CTX *ctx, int status)
209 ctx->status = status;
213 int ASYNC_WAIT_CTX_get_status(ASYNC_WAIT_CTX *ctx)
218 void async_wait_ctx_reset_counts(ASYNC_WAIT_CTX *ctx)
220 struct fd_lookup_st *curr, *prev = NULL;
227 while (curr != NULL) {
230 ctx->fds = curr->next;
232 prev->next = curr->next;