This file is indexed.

/usr/lib/gcc/x86_64-linux-gnu/6/include/d/core/sys/posix/arpa/inet.d is in libgphobos-6-dev 6.4.0-17ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
/**
 * D header file for POSIX.
 *
 * Copyright: Copyright Sean Kelly 2005 - 2009.
 * License:   $(WEB www.boost.org/LICENSE_1_0.txt, Boost License 1.0).
 * Authors:   Sean Kelly
 * Standards: The Open Group Base Specifications Issue 6, IEEE Std 1003.1, 2004 Edition
 */

/*          Copyright Sean Kelly 2005 - 2009.
 * Distributed under the Boost Software License, Version 1.0.
 *    (See accompanying file LICENSE or copy at
 *          http://www.boost.org/LICENSE_1_0.txt)
 */
module core.sys.posix.arpa.inet;

private import core.sys.posix.config;
public import core.stdc.inttypes; // for uint32_t, uint16_t
public import core.sys.posix.sys.socket; // for socklen_t

version (Posix):
extern (C) nothrow @nogc:

//
// Required
//
/*
NOTE: The following must must be defined in core.sys.posix.arpa.inet to break
      a circular import: in_port_t, in_addr_t, struct in_addr, INET_ADDRSTRLEN.

in_port_t // from core.sys.posix.netinet.in_
in_addr_t // from core.sys.posix.netinet.in_

struct in_addr  // from core.sys.posix.netinet.in_
INET_ADDRSTRLEN // from core.sys.posix.netinet.in_

uint32_t // from core.stdc.inttypes
uint16_t // from core.stdc.inttypes

uint32_t htonl(uint32_t);
uint16_t htons(uint16_t);
uint32_t ntohl(uint32_t);
uint16_t ntohs(uint16_t);

in_addr_t inet_addr(in char*);
char*     inet_ntoa(in_addr);
// per spec: const char* inet_ntop(int, const void*, char*, socklen_t);
char*     inet_ntop(int, in void*, char*, socklen_t);
int       inet_pton(int, in char*, void*);
*/

version( CRuntime_Glibc )
{
    alias uint16_t in_port_t;
    alias uint32_t in_addr_t;

    struct in_addr
    {
        in_addr_t s_addr;
    }

    enum INET_ADDRSTRLEN = 16;

    @trusted pure
    {
    uint32_t htonl(uint32_t);
    uint16_t htons(uint16_t);
    uint32_t ntohl(uint32_t);
    uint16_t ntohs(uint16_t);
    }

    in_addr_t       inet_addr(in char*);
    char*           inet_ntoa(in_addr);
    const(char)*    inet_ntop(int, in void*, char*, socklen_t);
    int             inet_pton(int, in char*, void*);
}
else version( OSX )
{
    alias uint16_t in_port_t;
    alias uint32_t in_addr_t;

    struct in_addr
    {
        in_addr_t s_addr;
    }

    enum INET_ADDRSTRLEN = 16;

    @trusted pure
    {
    uint32_t htonl(uint32_t);
    uint16_t htons(uint16_t);
    uint32_t ntohl(uint32_t);
    uint16_t ntohs(uint16_t);
    }

    in_addr_t       inet_addr(in char*);
    char*           inet_ntoa(in_addr);
    const(char)*    inet_ntop(int, in void*, char*, socklen_t);
    int             inet_pton(int, in char*, void*);
}
else version( FreeBSD )
{
    alias uint16_t in_port_t;
    alias uint32_t in_addr_t;

    struct in_addr
    {
        in_addr_t s_addr;
    }

    enum INET_ADDRSTRLEN = 16;

    @trusted pure
    {
    uint32_t htonl(uint32_t);
    uint16_t htons(uint16_t);
    uint32_t ntohl(uint32_t);
    uint16_t ntohs(uint16_t);
    }

    in_addr_t       inet_addr(in char*);
    char*           inet_ntoa(in_addr);
    const(char)*    inet_ntop(int, in void*, char*, socklen_t);
    int             inet_pton(int, in char*, void*);
}
else version( Solaris )
{
    alias uint16_t in_port_t;
    alias uint32_t in_addr_t;

    struct in_addr
    {
        in_addr_t s_addr;
    }
    enum INET_ADDRSTRLEN = 16;

    @trusted pure
    {
    uint32_t htonl(uint32_t);
    uint16_t htons(uint16_t);
    uint32_t ntohl(uint32_t);
    uint16_t ntohs(uint16_t);
    }

    in_addr_t       inet_addr(in char*);
    char*           inet_ntoa(in_addr);
    const(char)*    inet_ntop(int, in void*, char*, socklen_t);
    int             inet_pton(int, in char*, void*);
}
else version( CRuntime_Bionic )
{
    alias uint32_t in_addr_t;

    struct in_addr
    {
        in_addr_t s_addr;
    }

    enum INET_ADDRSTRLEN = 16;

    @safe pure extern (D)
    {
        private
        {
            uint32_t __swap32( uint32_t x )
            {
                uint32_t byte32_swap = (x & 0xff) << 24 | (x &0xff00) << 8 |
                                     (x & 0xff0000) >> 8 | (x & 0xff000000) >> 24;
                return byte32_swap;
            }

            uint16_t __swap16( uint16_t x )
            {
                uint16_t byte16_swap = (x & 0xff) << 8 | (x & 0xff00) >> 8;
                return byte16_swap;
            }
        }

        uint32_t htonl(uint32_t x) { return __swap32(x); }
        uint16_t htons(uint16_t x) { return __swap16(x); }
        uint32_t ntohl(uint32_t x) { return __swap32(x); }
        uint16_t ntohs(uint16_t x) { return __swap16(x); }
    }

    in_addr_t       inet_addr(in char*);
    char*           inet_ntoa(in_addr);
    const(char)*    inet_ntop(int, in void*, char*, size_t);
    int             inet_pton(int, in char*, void*);
}

//
// IPV6 (IP6)
//
/*
NOTE: The following must must be defined in core.sys.posix.arpa.inet to break
      a circular import: INET6_ADDRSTRLEN.

INET6_ADDRSTRLEN // from core.sys.posix.netinet.in_
*/

version( linux )
{
    enum INET6_ADDRSTRLEN = 46;
}
else version( OSX )
{
    enum INET6_ADDRSTRLEN = 46;
}
else version( FreeBSD )
{
    enum INET6_ADDRSTRLEN = 46;
}
else version( Solaris )
{
    enum INET6_ADDRSTRLEN = 46;
}
else version( Android )
{
    enum INET6_ADDRSTRLEN = 46;
}