1*27b03b36SApple OSS Distributions /*
2*27b03b36SApple OSS Distributions * Copyright (c) 2010 Apple Inc. All rights reserved.
3*27b03b36SApple OSS Distributions *
4*27b03b36SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*27b03b36SApple OSS Distributions *
6*27b03b36SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*27b03b36SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*27b03b36SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*27b03b36SApple OSS Distributions * compliance with the License. The rights granted to you under the License
10*27b03b36SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of,
11*27b03b36SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to
12*27b03b36SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any
13*27b03b36SApple OSS Distributions * terms of an Apple operating system software license agreement.
14*27b03b36SApple OSS Distributions *
15*27b03b36SApple OSS Distributions * Please obtain a copy of the License at
16*27b03b36SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*27b03b36SApple OSS Distributions *
18*27b03b36SApple OSS Distributions * The Original Code and all software distributed under the License are
19*27b03b36SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*27b03b36SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*27b03b36SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*27b03b36SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*27b03b36SApple OSS Distributions * Please see the License for the specific language governing rights and
24*27b03b36SApple OSS Distributions * limitations under the License.
25*27b03b36SApple OSS Distributions *
26*27b03b36SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*27b03b36SApple OSS Distributions */
28*27b03b36SApple OSS Distributions
29*27b03b36SApple OSS Distributions #include <TargetConditionals.h>
30*27b03b36SApple OSS Distributions #include <stddef.h>
31*27b03b36SApple OSS Distributions #include <stdint.h>
32*27b03b36SApple OSS Distributions #include "tsd.h"
33*27b03b36SApple OSS Distributions
34*27b03b36SApple OSS Distributions /*
35*27b03b36SApple OSS Distributions * cerror takes the return value of the syscall, being non-zero, and
36*27b03b36SApple OSS Distributions * stores it in errno. It needs to return -1 to indicate failure but
37*27b03b36SApple OSS Distributions * 64-bit platforms need to ensure that possible 128-bit wide return
38*27b03b36SApple OSS Distributions * values are also properly set.
39*27b03b36SApple OSS Distributions */
40*27b03b36SApple OSS Distributions #ifdef __LP64__
41*27b03b36SApple OSS Distributions typedef unsigned __int128 cerror_return_t;
42*27b03b36SApple OSS Distributions #else
43*27b03b36SApple OSS Distributions typedef uint64_t cerror_return_t;
44*27b03b36SApple OSS Distributions #endif
45*27b03b36SApple OSS Distributions
46*27b03b36SApple OSS Distributions extern void _pthread_exit_if_canceled(int error);
47*27b03b36SApple OSS Distributions
48*27b03b36SApple OSS Distributions #undef errno
49*27b03b36SApple OSS Distributions int errno;
50*27b03b36SApple OSS Distributions
51*27b03b36SApple OSS Distributions int *
__error(void)52*27b03b36SApple OSS Distributions __error(void)
53*27b03b36SApple OSS Distributions {
54*27b03b36SApple OSS Distributions void *ptr = _os_tsd_get_direct(__TSD_ERRNO);
55*27b03b36SApple OSS Distributions if (ptr != NULL) {
56*27b03b36SApple OSS Distributions return (int*)ptr;
57*27b03b36SApple OSS Distributions }
58*27b03b36SApple OSS Distributions return &errno;
59*27b03b36SApple OSS Distributions }
60*27b03b36SApple OSS Distributions
61*27b03b36SApple OSS Distributions __attribute__((noinline))
62*27b03b36SApple OSS Distributions cerror_return_t
cerror_nocancel(int err)63*27b03b36SApple OSS Distributions cerror_nocancel(int err)
64*27b03b36SApple OSS Distributions {
65*27b03b36SApple OSS Distributions errno = err;
66*27b03b36SApple OSS Distributions int *tsderrno = (int*)_os_tsd_get_direct(__TSD_ERRNO);
67*27b03b36SApple OSS Distributions if (tsderrno) {
68*27b03b36SApple OSS Distributions *tsderrno = err;
69*27b03b36SApple OSS Distributions }
70*27b03b36SApple OSS Distributions return -1;
71*27b03b36SApple OSS Distributions }
72*27b03b36SApple OSS Distributions
73*27b03b36SApple OSS Distributions __attribute__((noinline))
74*27b03b36SApple OSS Distributions cerror_return_t
cerror(int err)75*27b03b36SApple OSS Distributions cerror(int err)
76*27b03b36SApple OSS Distributions {
77*27b03b36SApple OSS Distributions _pthread_exit_if_canceled(err);
78*27b03b36SApple OSS Distributions return cerror_nocancel(err);
79*27b03b36SApple OSS Distributions }
80