/usr/share/gocode/src/github.com/lxc/lxd/shared/devices.go is in golang-github-lxc-lxd-dev 2.0.2-0ubuntu1~16.04.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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type Device map[string]string
type Devices map[string]Device
func (list Devices) ContainsName(k string) bool {
if list[k] != nil {
return true
}
return false
}
func (d Device) get(key string) string {
return d[key]
}
func (list Devices) Contains(k string, d Device) bool {
// If it didn't exist, it's different
if list[k] == nil {
return false
}
old := list[k]
return deviceEquals(old, d)
}
func deviceEquals(old Device, d Device) bool {
// Check for any difference and addition/removal of properties
for k, _ := range d {
if d[k] != old[k] {
return false
}
}
for k, _ := range old {
if d[k] != old[k] {
return false
}
}
return true
}
func (old Devices) Update(newlist Devices) (map[string]Device, map[string]Device, map[string]Device) {
rmlist := map[string]Device{}
addlist := map[string]Device{}
updatelist := map[string]Device{}
for key, d := range old {
if !newlist.Contains(key, d) {
rmlist[key] = d
}
}
for key, d := range newlist {
if !old.Contains(key, d) {
addlist[key] = d
}
}
for key, d := range addlist {
srcOldDevice := rmlist[key]
var oldDevice Device
err := DeepCopy(&srcOldDevice, &oldDevice)
if err != nil {
continue
}
srcNewDevice := newlist[key]
var newDevice Device
err = DeepCopy(&srcNewDevice, &newDevice)
if err != nil {
continue
}
for _, k := range []string{"limits.max", "limits.read", "limits.write", "limits.egress", "limits.ingress"} {
delete(oldDevice, k)
delete(newDevice, k)
}
if deviceEquals(oldDevice, newDevice) {
delete(rmlist, key)
delete(addlist, key)
updatelist[key] = d
}
}
return rmlist, addlist, updatelist
}
func (newBaseDevices Devices) ExtendFromProfile(currentFullDevices Devices, newDevicesFromProfile Devices) error {
// For any entry which exists in a profile and doesn't in the container config, add it
for name, newDev := range newDevicesFromProfile {
if curDev, ok := currentFullDevices[name]; ok {
newBaseDevices[name] = curDev
} else {
newBaseDevices[name] = newDev
}
}
return nil
}
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