From 8db41da676ac8368ef7c2549d56239a5ff5eedde Mon Sep 17 00:00:00 2001 From: Rutger Broekhoff Date: Tue, 2 Jan 2024 18:56:31 +0100 Subject: Delete vendor directory --- vendor/golang.org/x/sys/unix/ifreq_linux.go | 141 ---------------------------- 1 file changed, 141 deletions(-) delete mode 100644 vendor/golang.org/x/sys/unix/ifreq_linux.go (limited to 'vendor/golang.org/x/sys/unix/ifreq_linux.go') diff --git a/vendor/golang.org/x/sys/unix/ifreq_linux.go b/vendor/golang.org/x/sys/unix/ifreq_linux.go deleted file mode 100644 index 848840a..0000000 --- a/vendor/golang.org/x/sys/unix/ifreq_linux.go +++ /dev/null @@ -1,141 +0,0 @@ -// Copyright 2021 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 linux - -package unix - -import ( - "unsafe" -) - -// Helpers for dealing with ifreq since it contains a union and thus requires a -// lot of unsafe.Pointer casts to use properly. - -// An Ifreq is a type-safe wrapper around the raw ifreq struct. An Ifreq -// contains an interface name and a union of arbitrary data which can be -// accessed using the Ifreq's methods. To create an Ifreq, use the NewIfreq -// function. -// -// Use the Name method to access the stored interface name. The union data -// fields can be get and set using the following methods: -// - Uint16/SetUint16: flags -// - Uint32/SetUint32: ifindex, metric, mtu -type Ifreq struct{ raw ifreq } - -// NewIfreq creates an Ifreq with the input network interface name after -// validating the name does not exceed IFNAMSIZ-1 (trailing NULL required) -// bytes. -func NewIfreq(name string) (*Ifreq, error) { - // Leave room for terminating NULL byte. - if len(name) >= IFNAMSIZ { - return nil, EINVAL - } - - var ifr ifreq - copy(ifr.Ifrn[:], name) - - return &Ifreq{raw: ifr}, nil -} - -// TODO(mdlayher): get/set methods for hardware address sockaddr, char array, etc. - -// Name returns the interface name associated with the Ifreq. -func (ifr *Ifreq) Name() string { - return ByteSliceToString(ifr.raw.Ifrn[:]) -} - -// According to netdevice(7), only AF_INET addresses are returned for numerous -// sockaddr ioctls. For convenience, we expose these as Inet4Addr since the Port -// field and other data is always empty. - -// Inet4Addr returns the Ifreq union data from an embedded sockaddr as a C -// in_addr/Go []byte (4-byte IPv4 address) value. If the sockaddr family is not -// AF_INET, an error is returned. -func (ifr *Ifreq) Inet4Addr() ([]byte, error) { - raw := *(*RawSockaddrInet4)(unsafe.Pointer(&ifr.raw.Ifru[:SizeofSockaddrInet4][0])) - if raw.Family != AF_INET { - // Cannot safely interpret raw.Addr bytes as an IPv4 address. - return nil, EINVAL - } - - return raw.Addr[:], nil -} - -// SetInet4Addr sets a C in_addr/Go []byte (4-byte IPv4 address) value in an -// embedded sockaddr within the Ifreq's union data. v must be 4 bytes in length -// or an error will be returned. -func (ifr *Ifreq) SetInet4Addr(v []byte) error { - if len(v) != 4 { - return EINVAL - } - - var addr [4]byte - copy(addr[:], v) - - ifr.clear() - *(*RawSockaddrInet4)( - unsafe.Pointer(&ifr.raw.Ifru[:SizeofSockaddrInet4][0]), - ) = RawSockaddrInet4{ - // Always set IP family as ioctls would require it anyway. - Family: AF_INET, - Addr: addr, - } - - return nil -} - -// Uint16 returns the Ifreq union data as a C short/Go uint16 value. -func (ifr *Ifreq) Uint16() uint16 { - return *(*uint16)(unsafe.Pointer(&ifr.raw.Ifru[:2][0])) -} - -// SetUint16 sets a C short/Go uint16 value as the Ifreq's union data. -func (ifr *Ifreq) SetUint16(v uint16) { - ifr.clear() - *(*uint16)(unsafe.Pointer(&ifr.raw.Ifru[:2][0])) = v -} - -// Uint32 returns the Ifreq union data as a C int/Go uint32 value. -func (ifr *Ifreq) Uint32() uint32 { - return *(*uint32)(unsafe.Pointer(&ifr.raw.Ifru[:4][0])) -} - -// SetUint32 sets a C int/Go uint32 value as the Ifreq's union data. -func (ifr *Ifreq) SetUint32(v uint32) { - ifr.clear() - *(*uint32)(unsafe.Pointer(&ifr.raw.Ifru[:4][0])) = v -} - -// clear zeroes the ifreq's union field to prevent trailing garbage data from -// being sent to the kernel if an ifreq is reused. -func (ifr *Ifreq) clear() { - for i := range ifr.raw.Ifru { - ifr.raw.Ifru[i] = 0 - } -} - -// TODO(mdlayher): export as IfreqData? For now we can provide helpers such as -// IoctlGetEthtoolDrvinfo which use these APIs under the hood. - -// An ifreqData is an Ifreq which carries pointer data. To produce an ifreqData, -// use the Ifreq.withData method. -type ifreqData struct { - name [IFNAMSIZ]byte - // A type separate from ifreq is required in order to comply with the - // unsafe.Pointer rules since the "pointer-ness" of data would not be - // preserved if it were cast into the byte array of a raw ifreq. - data unsafe.Pointer - // Pad to the same size as ifreq. - _ [len(ifreq{}.Ifru) - SizeofPtr]byte -} - -// withData produces an ifreqData with the pointer p set for ioctls which require -// arbitrary pointer data. -func (ifr Ifreq) withData(p unsafe.Pointer) ifreqData { - return ifreqData{ - name: ifr.raw.Ifrn, - data: p, - } -} -- cgit v1.2.3