nulib.c.errno source code

1 /**
2     D header file for C99.
3 
4     $(C_HEADER_DESCRIPTION pubs.opengroup.org/onlinepubs/009695399/basedefs/_errno.h.html, _errno.h)
5 
6     Copyright: Copyright Sean Kelly 2005 - 2009.
7     License: Distributed under the
8        $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost Software License 1.0).
9        (See accompanying file LICENSE)
10     Authors:   Sean Kelly, Alex Rønne Petersen
11     Standards: ISO/IEC 9899:1999 (E)
12 */
13 module nulib.c.errno;
14 
15 version (OSX)
16     version = Darwin;
17 else version (iOS)
18     version = Darwin;
19 else version (TVOS)
20     version = Darwin;
21 else version (WatchOS)
22     version = Darwin;
23 
24 version (ARM)     version = ARM_Any;
25 version (AArch64) version = ARM_Any;
26 version (HPPA)    version = HPPA_Any;
27 version (MIPS32)  version = MIPS_Any;
28 version (MIPS64)  version = MIPS_Any;
29 version (PPC)     version = PPC_Any;
30 version (PPC64)   version = PPC_Any;
31 version (RISCV32) version = RISCV_Any;
32 version (RISCV64) version = RISCV_Any;
33 version (S390)    version = IBMZ_Any;
34 version (SPARC)   version = SPARC_Any;
35 version (SPARC64) version = SPARC_Any;
36 version (SystemZ) version = IBMZ_Any;
37 version (X86)     version = X86_Any;
38 version (X86_64)  version = X86_Any;
39 
40 @trusted: // Only manipulates errno.
41 nothrow:
42 @nogc:
43 
44 version (CRuntime_Microsoft) {
45     extern (C) {
46         ref int _errno();
47         alias errno = _errno;
48     }
49 } else version (CRuntime_Glibc) {
50     extern (C) {
51         ref int __errno_location();
52         alias errno = __errno_location;
53     }
54 } else version (CRuntime_Musl) {
55     extern (C) {
56         ref int __errno_location();
57         alias errno = __errno_location;
58     }
59 } else version (CRuntime_Newlib) {
60     extern (C) {
61         ref int __errno();
62         alias errno = __errno;
63     }
64 } else version (OpenBSD) {
65     // https://github.com/openbsd/src/blob/master/include/errno.h
66     extern (C) {
67         ref int __errno();
68         alias errno = __errno;
69     }
70 } else version (NetBSD) {
71     // https://github.com/NetBSD/src/blob/trunk/include/errno.h
72     extern (C) {
73         ref int __errno();
74         alias errno = __errno;
75     }
76 } else version (FreeBSD) {
77     extern (C) {
78         ref int __error();
79         alias errno = __error;
80     }
81 } else version (DragonFlyBSD) {
82     extern (C) {
83         pragma(mangle, "errno") int __errno;
84         ref int __error() {
85             return __errno;
86         }
87 
88         alias errno = __error;
89     }
90 } else version (CRuntime_Bionic) {
91     extern (C) {
92         ref int __errno();
93         alias errno = __errno;
94     }
95 } else version (CRuntime_UClibc) {
96     extern (C) {
97         ref int __errno_location();
98         alias errno = __errno_location;
99     }
100 } else version (Darwin) {
101     extern (C) {
102         ref int __error();
103         alias errno = __error;
104     }
105 } else version (Solaris) {
106     extern (C) {
107         ref int ___errno();
108         alias errno = ___errno;
109     }
110 } else version (Haiku) {
111     // https://github.com/haiku/haiku/blob/master/headers/posix/errno.h
112     extern (C) {
113         ref int _errnop();
114         alias errno = _errnop;
115     }
116 }