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// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build !netgo && darwin
package net
import (
"internal/syscall/unix"
"runtime"
"syscall"
"unsafe"
)
const (
_C_AF_INET = syscall.AF_INET
_C_AF_INET6 = syscall.AF_INET6
_C_AF_UNSPEC = syscall.AF_UNSPEC
_C_EAI_AGAIN = unix.EAI_AGAIN
_C_EAI_NONAME = unix.EAI_NONAME
_C_EAI_OVERFLOW = unix.EAI_OVERFLOW
_C_EAI_SYSTEM = unix.EAI_SYSTEM
_C_IPPROTO_TCP = syscall.IPPROTO_TCP
_C_IPPROTO_UDP = syscall.IPPROTO_UDP
_C_SOCK_DGRAM = syscall.SOCK_DGRAM
_C_SOCK_STREAM = syscall.SOCK_STREAM
)
type (
_C_char = byte
_C_int = int32
_C_uchar = byte
_C_uint = uint32
_C_socklen_t = int
_C_struct___res_state = unix.ResState
_C_struct_addrinfo = unix.Addrinfo
_C_struct_sockaddr = syscall.RawSockaddr
)
func _C_GoString(p *_C_char) string {
return unix.GoString(p)
}
func _C_CString(s string) *_C_char {
p := make([]byte, len(s)+1)
copy(p, s)
return &p[0]
}
func _C_FreeCString(p *_C_char) { _C_free(unsafe.Pointer(p)) }
func _C_free(p unsafe.Pointer) { runtime.KeepAlive(p) }
func _C_malloc(n uintptr) unsafe.Pointer {
if n <= 0 {
n = 1
}
return unsafe.Pointer(&make([]byte, n)[0])
}
func _C_ai_addr(ai *_C_struct_addrinfo) **_C_struct_sockaddr { return &ai.Addr }
func _C_ai_canonname(ai *_C_struct_addrinfo) **_C_char { return &ai.Canonname }
func _C_ai_family(ai *_C_struct_addrinfo) *_C_int { return &ai.Family }
func _C_ai_flags(ai *_C_struct_addrinfo) *_C_int { return &ai.Flags }
func _C_ai_next(ai *_C_struct_addrinfo) **_C_struct_addrinfo { return &ai.Next }
func _C_ai_protocol(ai *_C_struct_addrinfo) *_C_int { return &ai.Protocol }
func _C_ai_socktype(ai *_C_struct_addrinfo) *_C_int { return &ai.Socktype }
func _C_freeaddrinfo(ai *_C_struct_addrinfo) {
unix.Freeaddrinfo(ai)
}
func _C_gai_strerror(eai _C_int) string {
return unix.GaiStrerror(int(eai))
}
func _C_getaddrinfo(hostname, servname *byte, hints *_C_struct_addrinfo, res **_C_struct_addrinfo) (int, error) {
return unix.Getaddrinfo(hostname, servname, hints, res)
}
func _C_res_ninit(state *_C_struct___res_state) error {
unix.ResNinit(state)
return nil
}
func _C_res_nsearch(state *_C_struct___res_state, dname *_C_char, class, typ int, ans *_C_char, anslen int) (int, error) {
return unix.ResNsearch(state, dname, class, typ, ans, anslen)
}
func _C_res_nclose(state *_C_struct___res_state) {
unix.ResNclose(state)
}
func cgoNameinfoPTR(b []byte, sa *syscall.RawSockaddr, salen int) (int, error) {
gerrno, err := unix.Getnameinfo(sa, salen, &b[0], len(b), nil, 0, unix.NI_NAMEREQD)
return int(gerrno), err
}
func cgoSockaddrInet4(ip IP) *syscall.RawSockaddr {
sa := syscall.RawSockaddrInet4{Len: syscall.SizeofSockaddrInet4, Family: syscall.AF_INET}
copy(sa.Addr[:], ip)
return (*syscall.RawSockaddr)(unsafe.Pointer(&sa))
}
func cgoSockaddrInet6(ip IP, zone int) *syscall.RawSockaddr {
sa := syscall.RawSockaddrInet6{Len: syscall.SizeofSockaddrInet6, Family: syscall.AF_INET6, Scope_id: uint32(zone)}
copy(sa.Addr[:], ip)
return (*syscall.RawSockaddr)(unsafe.Pointer(&sa))
}
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