diff options
author | Viktor Dukhovni <openssl-users@dukhovni.org> | 2015-11-21 20:14:43 -0500 |
---|---|---|
committer | Viktor Dukhovni <openssl-users@dukhovni.org> | 2015-11-22 16:54:43 -0500 |
commit | 6e8ac5087061350a5a98ddc24dad6ceef9baf991 (patch) | |
tree | 35d5c7c7d42f03ccf97e67066b70a58e209667db /crypto/async/arch | |
parent | 3d32218812e87221344f2985512e42e4aaa88745 (diff) |
Async error handling and MacOS/X fixes
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>
Diffstat (limited to 'crypto/async/arch')
-rw-r--r-- | crypto/async/arch/async_null.c | 2 | ||||
-rw-r--r-- | crypto/async/arch/async_posix.c | 36 | ||||
-rw-r--r-- | crypto/async/arch/async_posix.h | 17 | ||||
-rw-r--r-- | crypto/async/arch/async_win.c | 1 | ||||
-rw-r--r-- | crypto/async/arch/async_win.h | 3 |
5 files changed, 24 insertions, 35 deletions
diff --git a/crypto/async/arch/async_null.c b/crypto/async/arch/async_null.c index b2dbfee7ec..baed884020 100644 --- a/crypto/async/arch/async_null.c +++ b/crypto/async/arch/async_null.c @@ -51,8 +51,8 @@ * ==================================================================== */ +/* This must be the first #include file */ #include "../async_locl.h" -#include <openssl/async.h> #ifdef ASYNC_NULL diff --git a/crypto/async/arch/async_posix.c b/crypto/async/arch/async_posix.c index 77a2c33de6..30075810ba 100644 --- a/crypto/async/arch/async_posix.c +++ b/crypto/async/arch/async_posix.c @@ -51,15 +51,13 @@ * ==================================================================== */ +/* This must be the first #include file */ #include "../async_locl.h" -#include <openssl/async.h> #ifdef ASYNC_POSIX + # include <stddef.h> -# include <ucontext.h> # include <unistd.h> -# include <openssl/crypto.h> -# include <openssl/async.h> pthread_key_t posixctx; pthread_key_t posixpool; @@ -91,27 +89,27 @@ void async_global_cleanup(void) { } -int async_fibre_init(async_fibre *fibre) +int async_fibre_makecontext(async_fibre *fibre) { - void *stack = NULL; - - stack = OPENSSL_malloc(STACKSIZE); - if (stack == NULL) { - return 0; - } - - fibre->fibre.uc_stack.ss_sp = stack; - fibre->fibre.uc_stack.ss_size = STACKSIZE; - fibre->fibre.uc_link = NULL; fibre->env_init = 0; - - return 1; + if (getcontext(&fibre->fibre) == 0) { + fibre->fibre.uc_stack.ss_sp = OPENSSL_malloc(STACKSIZE); + if (fibre->fibre.uc_stack.ss_sp != NULL) { + fibre->fibre.uc_stack.ss_size = STACKSIZE; + fibre->fibre.uc_link = NULL; + makecontext(&fibre->fibre, async_start_func, 0); + return 1; + } + } else { + fibre->fibre.uc_stack.ss_sp = NULL; + } + return 0; } void async_fibre_free(async_fibre *fibre) { - if (fibre->fibre.uc_stack.ss_sp) - OPENSSL_free(fibre->fibre.uc_stack.ss_sp); + OPENSSL_free(fibre->fibre.uc_stack.ss_sp); + fibre->fibre.uc_stack.ss_sp = NULL; } int async_pipe(OSSL_ASYNC_FD *pipefds) diff --git a/crypto/async/arch/async_posix.h b/crypto/async/arch/async_posix.h index 36fae24788..c247888b67 100644 --- a/crypto/async/arch/async_posix.h +++ b/crypto/async/arch/async_posix.h @@ -50,6 +50,8 @@ * OF THE POSSIBILITY OF SUCH DAMAGE. * ==================================================================== */ +#ifndef OPENSSL_ASYNC_ARCH_ASYNC_POSIX_H +#define OPENSSL_ASYNC_ARCH_ASYNC_POSIX_H #include <openssl/e_os2.h> #if defined(OPENSSL_SYS_UNIX) && defined(OPENSSL_THREADS) @@ -63,14 +65,6 @@ # define ASYNC_POSIX # define ASYNC_ARCH -/* - * Some platforms complain (e.g. OS-X) that setcontext/getcontext/makecontext - * are deprecated without the following defined. We know its deprecated but - * there is no alternative. - */ -# define _XOPEN_SOURCE -# pragma GCC diagnostic ignored "-Wdeprecated-declarations" - # include <ucontext.h> # include <setjmp.h> # include "e_os.h" @@ -103,14 +97,11 @@ static inline int async_fibre_swapcontext(async_fibre *o, async_fibre *n, int r) return 1; } -# define async_fibre_makecontext(c) \ - (!getcontext(&(c)->fibre) \ - && async_fibre_init(c) \ - && (makecontext(&(c)->fibre, async_start_func, 0), 1)) # define async_fibre_init_dispatcher(d) -int async_fibre_init(async_fibre *fibre); +int async_fibre_makecontext(async_fibre *fibre); void async_fibre_free(async_fibre *fibre); # endif #endif +#endif /* OPENSSL_ASYNC_ARCH_ASYNC_POSIX_H */ diff --git a/crypto/async/arch/async_win.c b/crypto/async/arch/async_win.c index 20c8a09bc4..519476c397 100644 --- a/crypto/async/arch/async_win.c +++ b/crypto/async/arch/async_win.c @@ -51,6 +51,7 @@ * ==================================================================== */ +/* This must be the first #include file */ #include "../async_locl.h" #ifdef ASYNC_WIN diff --git a/crypto/async/arch/async_win.h b/crypto/async/arch/async_win.h index 77e41e405b..b247f59e48 100644 --- a/crypto/async/arch/async_win.h +++ b/crypto/async/arch/async_win.h @@ -51,13 +51,12 @@ * ==================================================================== */ -#include <openssl/async.h> - /* * This is the same detection used in cryptlib to set up the thread local * storage that we depend on, so just copy that */ #if defined(_WIN32) || defined(__CYGWIN__) +#include <openssl/async.h> # define ASYNC_WIN # define ASYNC_ARCH |