/*
* Copyright (c) 2010 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#include <TargetConditionals.h>
#include <stddef.h>
#include <stdint.h>
#include "tsd.h"
/*
* cerror takes the return value of the syscall, being non-zero, and
* stores it in errno. It needs to return -1 to indicate failure but
* 64-bit platforms need to ensure that possible 128-bit wide return
* values are also properly set.
*/
#ifdef __LP64__
typedef unsigned __int128 cerror_return_t;
#else
typedef uint64_t cerror_return_t;
#endif
extern void _pthread_exit_if_canceled(int error);
#undef errno
int errno;
int *
__error(void)
{
void *ptr = _os_tsd_get_direct(__TSD_ERRNO);
if (ptr != NULL) {
return (int*)ptr;
}
return &errno;
}
__attribute__((noinline))
cerror_return_t
cerror_nocancel(int err)
{
errno = err;
int *tsderrno = (int*)_os_tsd_get_direct(__TSD_ERRNO);
if (tsderrno) {
*tsderrno = err;
}
return -1;
}
__attribute__((noinline))
cerror_return_t
cerror(int err)
{
_pthread_exit_if_canceled(err);
return cerror_nocancel(err);
}