1*c54f35caSApple OSS Distributions /*
2*c54f35caSApple OSS Distributions * Copyright (c) 2010 Apple Inc. All rights reserved.
3*c54f35caSApple OSS Distributions *
4*c54f35caSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*c54f35caSApple OSS Distributions *
6*c54f35caSApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code
7*c54f35caSApple OSS Distributions * as defined in and that are subject to the Apple Public Source License
8*c54f35caSApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in
9*c54f35caSApple OSS Distributions * compliance with the License. The rights granted to you under the License
10*c54f35caSApple OSS Distributions * may not be used to create, or enable the creation or redistribution of,
11*c54f35caSApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to
12*c54f35caSApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any
13*c54f35caSApple OSS Distributions * terms of an Apple operating system software license agreement.
14*c54f35caSApple OSS Distributions *
15*c54f35caSApple OSS Distributions * Please obtain a copy of the License at
16*c54f35caSApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*c54f35caSApple OSS Distributions *
18*c54f35caSApple OSS Distributions * The Original Code and all software distributed under the License are
19*c54f35caSApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*c54f35caSApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*c54f35caSApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*c54f35caSApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*c54f35caSApple OSS Distributions * Please see the License for the specific language governing rights and
24*c54f35caSApple OSS Distributions * limitations under the License.
25*c54f35caSApple OSS Distributions *
26*c54f35caSApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*c54f35caSApple OSS Distributions */
28*c54f35caSApple OSS Distributions
29*c54f35caSApple OSS Distributions #include <TargetConditionals.h>
30*c54f35caSApple OSS Distributions #include <stddef.h>
31*c54f35caSApple OSS Distributions #include <stdint.h>
32*c54f35caSApple OSS Distributions #include "tsd.h"
33*c54f35caSApple OSS Distributions
34*c54f35caSApple OSS Distributions /*
35*c54f35caSApple OSS Distributions * cerror takes the return value of the syscall, being non-zero, and
36*c54f35caSApple OSS Distributions * stores it in errno. It needs to return -1 to indicate failure but
37*c54f35caSApple OSS Distributions * 64-bit platforms need to ensure that possible 128-bit wide return
38*c54f35caSApple OSS Distributions * values are also properly set.
39*c54f35caSApple OSS Distributions */
40*c54f35caSApple OSS Distributions #ifdef __LP64__
41*c54f35caSApple OSS Distributions typedef unsigned __int128 cerror_return_t;
42*c54f35caSApple OSS Distributions #else
43*c54f35caSApple OSS Distributions typedef uint64_t cerror_return_t;
44*c54f35caSApple OSS Distributions #endif
45*c54f35caSApple OSS Distributions
46*c54f35caSApple OSS Distributions extern void _pthread_exit_if_canceled(int error);
47*c54f35caSApple OSS Distributions
48*c54f35caSApple OSS Distributions #undef errno
49*c54f35caSApple OSS Distributions int errno;
50*c54f35caSApple OSS Distributions
51*c54f35caSApple OSS Distributions int *
__error(void)52*c54f35caSApple OSS Distributions __error(void)
53*c54f35caSApple OSS Distributions {
54*c54f35caSApple OSS Distributions void *ptr = _os_tsd_get_direct(__TSD_ERRNO);
55*c54f35caSApple OSS Distributions if (ptr != NULL) {
56*c54f35caSApple OSS Distributions return (int*)ptr;
57*c54f35caSApple OSS Distributions }
58*c54f35caSApple OSS Distributions return &errno;
59*c54f35caSApple OSS Distributions }
60*c54f35caSApple OSS Distributions
61*c54f35caSApple OSS Distributions __attribute__((noinline))
62*c54f35caSApple OSS Distributions cerror_return_t
cerror_nocancel(int err)63*c54f35caSApple OSS Distributions cerror_nocancel(int err)
64*c54f35caSApple OSS Distributions {
65*c54f35caSApple OSS Distributions errno = err;
66*c54f35caSApple OSS Distributions int *tsderrno = (int*)_os_tsd_get_direct(__TSD_ERRNO);
67*c54f35caSApple OSS Distributions if (tsderrno) {
68*c54f35caSApple OSS Distributions *tsderrno = err;
69*c54f35caSApple OSS Distributions }
70*c54f35caSApple OSS Distributions return -1;
71*c54f35caSApple OSS Distributions }
72*c54f35caSApple OSS Distributions
73*c54f35caSApple OSS Distributions __attribute__((noinline))
74*c54f35caSApple OSS Distributions cerror_return_t
cerror(int err)75*c54f35caSApple OSS Distributions cerror(int err)
76*c54f35caSApple OSS Distributions {
77*c54f35caSApple OSS Distributions _pthread_exit_if_canceled(err);
78*c54f35caSApple OSS Distributions return cerror_nocancel(err);
79*c54f35caSApple OSS Distributions }
80