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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.
package unix
import (
"internal/abi"
"syscall"
"unsafe"
)
const (
AI_CANONNAME = 0x2
AI_ALL = 0x100
AI_V4MAPPED = 0x800
AI_MASK = 0x1407
EAI_AGAIN = 2
EAI_NODATA = 7
EAI_NONAME = 8
EAI_SERVICE = 9
EAI_SYSTEM = 11
EAI_OVERFLOW = 14
NI_NAMEREQD = 4
)
type Addrinfo struct {
Flags int32
Family int32
Socktype int32
Protocol int32
Addrlen uint32
Canonname *byte
Addr *syscall.RawSockaddr
Next *Addrinfo
}
//go:cgo_ldflag "-lresolv"
//go:cgo_import_dynamic libc_getaddrinfo getaddrinfo "/usr/lib/libSystem.B.dylib"
func libc_getaddrinfo_trampoline()
func Getaddrinfo(hostname, servname *byte, hints *Addrinfo, res **Addrinfo) (int, error) {
gerrno, _, errno := syscall_syscall6(abi.FuncPCABI0(libc_getaddrinfo_trampoline),
uintptr(unsafe.Pointer(hostname)),
uintptr(unsafe.Pointer(servname)),
uintptr(unsafe.Pointer(hints)),
uintptr(unsafe.Pointer(res)),
0,
0)
var err error
if errno != 0 {
err = errno
}
return int(gerrno), err
}
//go:cgo_import_dynamic libc_freeaddrinfo freeaddrinfo "/usr/lib/libSystem.B.dylib"
func libc_freeaddrinfo_trampoline()
func Freeaddrinfo(ai *Addrinfo) {
syscall_syscall6(abi.FuncPCABI0(libc_freeaddrinfo_trampoline),
uintptr(unsafe.Pointer(ai)),
0, 0, 0, 0, 0)
}
//go:cgo_import_dynamic libc_getnameinfo getnameinfo "/usr/lib/libSystem.B.dylib"
func libc_getnameinfo_trampoline()
func Getnameinfo(sa *syscall.RawSockaddr, salen int, host *byte, hostlen int, serv *byte, servlen int, flags int) (int, error) {
gerrno, _, errno := syscall_syscall9(abi.FuncPCABI0(libc_getnameinfo_trampoline),
uintptr(unsafe.Pointer(sa)),
uintptr(salen),
uintptr(unsafe.Pointer(host)),
uintptr(hostlen),
uintptr(unsafe.Pointer(serv)),
uintptr(servlen),
uintptr(flags),
0,
0)
var err error
if errno != 0 {
err = errno
}
return int(gerrno), err
}
//go:cgo_import_dynamic libc_gai_strerror gai_strerror "/usr/lib/libSystem.B.dylib"
func libc_gai_strerror_trampoline()
func GaiStrerror(ecode int) string {
r1, _, _ := syscall_syscall(abi.FuncPCABI0(libc_gai_strerror_trampoline),
uintptr(ecode),
0, 0)
return GoString((*byte)(unsafe.Pointer(r1)))
}
// Implemented in the runtime package.
func gostring(*byte) string
func GoString(p *byte) string {
return gostring(p)
}
//go:linkname syscall_syscall syscall.syscall
func syscall_syscall(fn, a1, a2, a3 uintptr) (r1, r2 uintptr, err syscall.Errno)
//go:linkname syscall_syscallPtr syscall.syscallPtr
func syscall_syscallPtr(fn, a1, a2, a3 uintptr) (r1, r2 uintptr, err syscall.Errno)
//go:linkname syscall_syscall6 syscall.syscall6
func syscall_syscall6(fn, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err syscall.Errno)
//go:linkname syscall_syscall6X syscall.syscall6X
func syscall_syscall6X(fn, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err syscall.Errno)
//go:linkname syscall_syscall9 syscall.syscall9
func syscall_syscall9(fn, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)
type ResState struct {
unexported [69]uintptr
}
//go:cgo_import_dynamic libresolv_res_9_ninit res_9_ninit "/usr/lib/libresolv.9.dylib"
func libresolv_res_9_ninit_trampoline()
func ResNinit(state *ResState) error {
_, _, errno := syscall_syscall(abi.FuncPCABI0(libresolv_res_9_ninit_trampoline),
uintptr(unsafe.Pointer(state)),
0, 0)
if errno != 0 {
return errno
}
return nil
}
//go:cgo_import_dynamic libresolv_res_9_nclose res_9_nclose "/usr/lib/libresolv.9.dylib"
func libresolv_res_9_nclose_trampoline()
func ResNclose(state *ResState) {
syscall_syscall(abi.FuncPCABI0(libresolv_res_9_nclose_trampoline),
uintptr(unsafe.Pointer(state)),
0, 0)
}
//go:cgo_import_dynamic libresolv_res_9_nsearch res_9_nsearch "/usr/lib/libresolv.9.dylib"
func libresolv_res_9_nsearch_trampoline()
func ResNsearch(state *ResState, dname *byte, class, typ int, ans *byte, anslen int) (int, error) {
r1, _, errno := syscall_syscall6(abi.FuncPCABI0(libresolv_res_9_nsearch_trampoline),
uintptr(unsafe.Pointer(state)),
uintptr(unsafe.Pointer(dname)),
uintptr(class),
uintptr(typ),
uintptr(unsafe.Pointer(ans)),
uintptr(anslen))
if errno != 0 {
return 0, errno
}
return int(int32(r1)), nil
}