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39 lines
1.1 KiB
Go
39 lines
1.1 KiB
Go
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// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package ipv4
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import (
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"syscall"
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"unsafe"
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)
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//go:cgo_import_dynamic libc___xnet_getsockopt __xnet_getsockopt "libsocket.so"
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//go:cgo_import_dynamic libc_setsockopt setsockopt "libsocket.so"
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//go:linkname procGetsockopt libc___xnet_getsockopt
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//go:linkname procSetsockopt libc_setsockopt
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var (
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procGetsockopt uintptr
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procSetsockopt uintptr
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)
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func sysvicall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (uintptr, uintptr, syscall.Errno)
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func getsockopt(s uintptr, level, name int, v unsafe.Pointer, l *uint32) error {
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_, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procGetsockopt)), 5, s, uintptr(level), uintptr(name), uintptr(v), uintptr(unsafe.Pointer(l)), 0)
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if errno != 0 {
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return error(errno)
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}
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return nil
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}
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func setsockopt(s uintptr, level, name int, v unsafe.Pointer, l uint32) error {
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if _, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procSetsockopt)), 5, s, uintptr(level), uintptr(name), uintptr(v), uintptr(l), 0); errno != 0 {
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return error(errno)
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}
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return nil
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}
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