func (sb *sandbox) buildHostsFile() error {
if sb.config.hostsPath == "" {
sb.config.hostsPath = defaultPrefix + "/" + sb.id + "/hosts"
}
dir, _ := filepath.Split(sb.config.hostsPath)
if err := createBasePath(dir); err != nil {
return err
}
// This is for the host mode networking
if sb.config.originHostsPath != "" {
if err := copyFile(sb.config.originHostsPath, sb.config.hostsPath); err != nil && !os.IsNotExist(err) {
return types.InternalErrorf("could not copy source hosts file %s to %s: %v", sb.config.originHostsPath, sb.config.hostsPath, err)
}
return nil
}
extraContent := make([]etchosts.Record, 0, len(sb.config.extraHosts))
for _, extraHost := range sb.config.extraHosts {
extraContent = append(extraContent, etchosts.Record{Hosts: extraHost.name, IP: extraHost.IP})
}
return etchosts.Build(sb.config.hostsPath, "", sb.config.hostName, sb.config.domainName, extraContent)
}
func (ep *endpoint) buildHostsFiles() error {
var extraContent []etchosts.Record
ep.Lock()
container := ep.container
joinInfo := ep.joinInfo
ifaces := ep.iFaces
ep.Unlock()
if container == nil {
return ErrNoContainer{}
}
if container.config.hostsPath == "" {
container.config.hostsPath = defaultPrefix + "/" + container.id + "/hosts"
}
dir, _ := filepath.Split(container.config.hostsPath)
err := createBasePath(dir)
if err != nil {
return err
}
if joinInfo != nil && joinInfo.hostsPath != "" {
content, err := ioutil.ReadFile(joinInfo.hostsPath)
if err != nil && !os.IsNotExist(err) {
return err
}
if err == nil {
return ioutil.WriteFile(container.config.hostsPath, content, 0644)
}
}
name := container.config.hostName
if container.config.domainName != "" {
name = name + "." + container.config.domainName
}
for _, extraHost := range container.config.extraHosts {
extraContent = append(extraContent,
etchosts.Record{Hosts: extraHost.name, IP: extraHost.IP})
}
IP := ""
if len(ifaces) != 0 && ifaces[0] != nil {
IP = ifaces[0].addr.IP.String()
}
return etchosts.Build(container.config.hostsPath, IP, container.config.hostName,
container.config.domainName, extraContent)
}
func (sb *sandbox) updateHostsFile(ifaceIP string, svcRecords []etchosts.Record) error {
// Rebuild the hosts file accounting for the passed interface IP and service records
extraContent := make([]etchosts.Record, 0, len(sb.config.extraHosts)+len(svcRecords))
for _, extraHost := range sb.config.extraHosts {
extraContent = append(extraContent, etchosts.Record{Hosts: extraHost.name, IP: extraHost.IP})
}
for _, svc := range svcRecords {
extraContent = append(extraContent, svc)
}
return etchosts.Build(sb.config.hostsPath, ifaceIP, sb.config.hostName, sb.config.domainName, extraContent)
}
func (sb *sandbox) updateHostsFile(ifaceIP string, svcRecords []etchosts.Record) error {
var err error
if sb.config.originHostsPath != "" {
return nil
}
max := func(a, b int) int {
if a < b {
return b
}
return a
}
extraContent := make([]etchosts.Record, 0,
max(len(sb.config.extraHosts), len(svcRecords)))
sb.hostsOnce.Do(func() {
// Rebuild the hosts file accounting for the passed
// interface IP and service records
for _, extraHost := range sb.config.extraHosts {
extraContent = append(extraContent,
etchosts.Record{Hosts: extraHost.name, IP: extraHost.IP})
}
err = etchosts.Build(sb.config.hostsPath, ifaceIP,
sb.config.hostName, sb.config.domainName, extraContent)
})
if err != nil {
return err
}
extraContent = extraContent[:0]
for _, svc := range svcRecords {
extraContent = append(extraContent, svc)
}
sb.addHostsEntries(extraContent)
return nil
}