Source file
src/net/cgo_unix_syscall.go
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6
7 package net
8
9 import (
10 "internal/syscall/unix"
11 "runtime"
12 "syscall"
13 "unsafe"
14 )
15
16 const (
17 _C_AF_INET = syscall.AF_INET
18 _C_AF_INET6 = syscall.AF_INET6
19 _C_AF_UNSPEC = syscall.AF_UNSPEC
20 _C_EAI_AGAIN = unix.EAI_AGAIN
21 _C_EAI_NONAME = unix.EAI_NONAME
22 _C_EAI_NODATA = unix.EAI_NODATA
23 _C_EAI_OVERFLOW = unix.EAI_OVERFLOW
24 _C_EAI_SYSTEM = unix.EAI_SYSTEM
25 _C_IPPROTO_TCP = syscall.IPPROTO_TCP
26 _C_IPPROTO_UDP = syscall.IPPROTO_UDP
27 _C_SOCK_DGRAM = syscall.SOCK_DGRAM
28 _C_SOCK_STREAM = syscall.SOCK_STREAM
29 )
30
31 type (
32 _C_char = byte
33 _C_int = int32
34 _C_uchar = byte
35 _C_uint = uint32
36 _C_socklen_t = int
37 _C_struct___res_state = unix.ResState
38 _C_struct_addrinfo = unix.Addrinfo
39 _C_struct_sockaddr = syscall.RawSockaddr
40 )
41
42 func _C_GoString(p *_C_char) string {
43 return unix.GoString(p)
44 }
45
46 func _C_free(p unsafe.Pointer) { runtime.KeepAlive(p) }
47
48 func _C_malloc(n uintptr) unsafe.Pointer {
49 if n <= 0 {
50 n = 1
51 }
52 return unsafe.Pointer(&make([]byte, n)[0])
53 }
54
55 func _C_ai_addr(ai *_C_struct_addrinfo) **_C_struct_sockaddr { return &ai.Addr }
56 func _C_ai_family(ai *_C_struct_addrinfo) *_C_int { return &ai.Family }
57 func _C_ai_flags(ai *_C_struct_addrinfo) *_C_int { return &ai.Flags }
58 func _C_ai_next(ai *_C_struct_addrinfo) **_C_struct_addrinfo { return &ai.Next }
59 func _C_ai_protocol(ai *_C_struct_addrinfo) *_C_int { return &ai.Protocol }
60 func _C_ai_socktype(ai *_C_struct_addrinfo) *_C_int { return &ai.Socktype }
61
62 func _C_freeaddrinfo(ai *_C_struct_addrinfo) {
63 unix.Freeaddrinfo(ai)
64 }
65
66 func _C_gai_strerror(eai _C_int) string {
67 return unix.GaiStrerror(int(eai))
68 }
69
70 func _C_getaddrinfo(hostname, servname *byte, hints *_C_struct_addrinfo, res **_C_struct_addrinfo) (int, error) {
71 return unix.Getaddrinfo(hostname, servname, hints, res)
72 }
73
74 func _C_res_ninit(state *_C_struct___res_state) error {
75 unix.ResNinit(state)
76 return nil
77 }
78
79 func _C_res_nsearch(state *_C_struct___res_state, dname *_C_char, class, typ int, ans *_C_char, anslen int) (int, error) {
80 return unix.ResNsearch(state, dname, class, typ, ans, anslen)
81 }
82
83 func _C_res_nclose(state *_C_struct___res_state) {
84 unix.ResNclose(state)
85 }
86
87 func cgoNameinfoPTR(b []byte, sa *syscall.RawSockaddr, salen int) (int, error) {
88 gerrno, err := unix.Getnameinfo(sa, salen, &b[0], len(b), nil, 0, unix.NI_NAMEREQD)
89 return int(gerrno), err
90 }
91
92 func cgoSockaddrInet4(ip IP) *syscall.RawSockaddr {
93 sa := syscall.RawSockaddrInet4{Len: syscall.SizeofSockaddrInet4, Family: syscall.AF_INET}
94 copy(sa.Addr[:], ip)
95 return (*syscall.RawSockaddr)(unsafe.Pointer(&sa))
96 }
97
98 func cgoSockaddrInet6(ip IP, zone int) *syscall.RawSockaddr {
99 sa := syscall.RawSockaddrInet6{Len: syscall.SizeofSockaddrInet6, Family: syscall.AF_INET6, Scope_id: uint32(zone)}
100 copy(sa.Addr[:], ip)
101 return (*syscall.RawSockaddr)(unsafe.Pointer(&sa))
102 }
103
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