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6e8ac50870
In the async code for MacOS/X define _XOPEN_SOURCE (if not already defined) as early as possible. We must do this before including any header files, because on MacOS/X <stlib.h> includes <signal.h> which includes <ucontext.h>. If we delay defining _XOPEN_SOURCE and include <ucontext.h> after various system headers are included, we are very likely to end up with the wrong (truncated) definition of ucontext_t. Also, better error handling and some code cleanup in POSIX fibre construction and destruction. We make sure that async_fibre_makecontext() always initializes the fibre to a state that can be freed. For all implementations, check for error returns from async_fibre_makecontext(). Reviewed-by: Matt Caswell <matt@openssl.org>
148 lines
4.1 KiB
C
148 lines
4.1 KiB
C
/* crypto/async/arch/async_posix.c */
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/*
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* Written by Matt Caswell (matt@openssl.org) for the OpenSSL project.
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*/
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/* ====================================================================
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* Copyright (c) 2015 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*/
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/* This must be the first #include file */
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#include "../async_locl.h"
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#ifdef ASYNC_POSIX
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# include <stddef.h>
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# include <unistd.h>
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pthread_key_t posixctx;
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pthread_key_t posixpool;
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#define STACKSIZE 32768
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int async_global_init(void)
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{
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if (pthread_key_create(&posixctx, NULL) != 0
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|| pthread_key_create(&posixpool, NULL) != 0)
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return 0;
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return 1;
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}
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int async_local_init(void)
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{
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if (!async_set_ctx(NULL) || ! async_set_pool(NULL))
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return 0;
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return 1;
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}
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void async_local_cleanup(void)
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{
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}
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void async_global_cleanup(void)
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{
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}
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int async_fibre_makecontext(async_fibre *fibre)
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{
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fibre->env_init = 0;
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if (getcontext(&fibre->fibre) == 0) {
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fibre->fibre.uc_stack.ss_sp = OPENSSL_malloc(STACKSIZE);
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if (fibre->fibre.uc_stack.ss_sp != NULL) {
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fibre->fibre.uc_stack.ss_size = STACKSIZE;
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fibre->fibre.uc_link = NULL;
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makecontext(&fibre->fibre, async_start_func, 0);
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return 1;
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}
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} else {
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fibre->fibre.uc_stack.ss_sp = NULL;
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}
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return 0;
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}
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void async_fibre_free(async_fibre *fibre)
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{
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OPENSSL_free(fibre->fibre.uc_stack.ss_sp);
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fibre->fibre.uc_stack.ss_sp = NULL;
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}
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int async_pipe(OSSL_ASYNC_FD *pipefds)
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{
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if (pipe(pipefds) == 0)
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return 1;
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return 0;
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}
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int async_close_fd(OSSL_ASYNC_FD fd)
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{
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if (close(fd) != 0)
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return 0;
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return 1;
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}
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int async_write1(OSSL_ASYNC_FD fd, const void *buf)
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{
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if (write(fd, buf, 1) > 0)
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return 1;
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return 0;
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}
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int async_read1(OSSL_ASYNC_FD fd, void *buf)
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{
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if (read(fd, buf, 1) > 0)
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return 1;
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return 0;
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}
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#endif
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