mirror of
https://github.com/ceph/ceph-csi.git
synced 2025-03-10 01:19:29 +00:00
f87d06ed85
Several packages are only used while running the e2e suite. These packages are less important to update, as the they can not influence the final executable that is part of the Ceph-CSI container-image. By moving these dependencies out of the main Ceph-CSI go.mod, it is easier to identify if a reported CVE affects Ceph-CSI, or only the testing (like most of the Kubernetes CVEs). Signed-off-by: Niels de Vos <ndevos@ibm.com>
91 lines
2.3 KiB
Go
91 lines
2.3 KiB
Go
// Copyright 2016 Google Inc. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package uuid
|
|
|
|
import (
|
|
"sync"
|
|
)
|
|
|
|
var (
|
|
nodeMu sync.Mutex
|
|
ifname string // name of interface being used
|
|
nodeID [6]byte // hardware for version 1 UUIDs
|
|
zeroID [6]byte // nodeID with only 0's
|
|
)
|
|
|
|
// NodeInterface returns the name of the interface from which the NodeID was
|
|
// derived. The interface "user" is returned if the NodeID was set by
|
|
// SetNodeID.
|
|
func NodeInterface() string {
|
|
defer nodeMu.Unlock()
|
|
nodeMu.Lock()
|
|
return ifname
|
|
}
|
|
|
|
// SetNodeInterface selects the hardware address to be used for Version 1 UUIDs.
|
|
// If name is "" then the first usable interface found will be used or a random
|
|
// Node ID will be generated. If a named interface cannot be found then false
|
|
// is returned.
|
|
//
|
|
// SetNodeInterface never fails when name is "".
|
|
func SetNodeInterface(name string) bool {
|
|
defer nodeMu.Unlock()
|
|
nodeMu.Lock()
|
|
return setNodeInterface(name)
|
|
}
|
|
|
|
func setNodeInterface(name string) bool {
|
|
iname, addr := getHardwareInterface(name) // null implementation for js
|
|
if iname != "" && addr != nil {
|
|
ifname = iname
|
|
copy(nodeID[:], addr)
|
|
return true
|
|
}
|
|
|
|
// We found no interfaces with a valid hardware address. If name
|
|
// does not specify a specific interface generate a random Node ID
|
|
// (section 4.1.6)
|
|
if name == "" {
|
|
ifname = "random"
|
|
randomBits(nodeID[:])
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
// NodeID returns a slice of a copy of the current Node ID, setting the Node ID
|
|
// if not already set.
|
|
func NodeID() []byte {
|
|
defer nodeMu.Unlock()
|
|
nodeMu.Lock()
|
|
if nodeID == zeroID {
|
|
setNodeInterface("")
|
|
}
|
|
nid := nodeID
|
|
return nid[:]
|
|
}
|
|
|
|
// SetNodeID sets the Node ID to be used for Version 1 UUIDs. The first 6 bytes
|
|
// of id are used. If id is less than 6 bytes then false is returned and the
|
|
// Node ID is not set.
|
|
func SetNodeID(id []byte) bool {
|
|
if len(id) < 6 {
|
|
return false
|
|
}
|
|
defer nodeMu.Unlock()
|
|
nodeMu.Lock()
|
|
copy(nodeID[:], id)
|
|
ifname = "user"
|
|
return true
|
|
}
|
|
|
|
// NodeID returns the 6 byte node id encoded in uuid. It returns nil if uuid is
|
|
// not valid. The NodeID is only well defined for version 1 and 2 UUIDs.
|
|
func (uuid UUID) NodeID() []byte {
|
|
var node [6]byte
|
|
copy(node[:], uuid[10:])
|
|
return node[:]
|
|
}
|