daemon_unix.go 1.6 KB

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  1. // +build daemon,!windows
  2. package main
  3. import (
  4. "fmt"
  5. "os"
  6. "os/signal"
  7. "syscall"
  8. apiserver "github.com/docker/docker/api/server"
  9. "github.com/docker/docker/daemon"
  10. "github.com/docker/docker/pkg/mflag"
  11. "github.com/docker/docker/pkg/system"
  12. _ "github.com/docker/docker/daemon/execdriver/native"
  13. )
  14. const defaultDaemonConfigFile = "/etc/docker/daemon.json"
  15. func setPlatformServerConfig(serverConfig *apiserver.Config, daemonCfg *daemon.Config) *apiserver.Config {
  16. serverConfig.EnableCors = daemonCfg.EnableCors
  17. serverConfig.CorsHeaders = daemonCfg.CorsHeaders
  18. return serverConfig
  19. }
  20. // currentUserIsOwner checks whether the current user is the owner of the given
  21. // file.
  22. func currentUserIsOwner(f string) bool {
  23. if fileInfo, err := system.Stat(f); err == nil && fileInfo != nil {
  24. if int(fileInfo.UID()) == os.Getuid() {
  25. return true
  26. }
  27. }
  28. return false
  29. }
  30. // setDefaultUmask sets the umask to 0022 to avoid problems
  31. // caused by custom umask
  32. func setDefaultUmask() error {
  33. desiredUmask := 0022
  34. syscall.Umask(desiredUmask)
  35. if umask := syscall.Umask(desiredUmask); umask != desiredUmask {
  36. return fmt.Errorf("failed to set umask: expected %#o, got %#o", desiredUmask, umask)
  37. }
  38. return nil
  39. }
  40. func getDaemonConfDir() string {
  41. return "/etc/docker"
  42. }
  43. // setupConfigReloadTrap configures the USR2 signal to reload the configuration.
  44. func setupConfigReloadTrap(configFile string, flags *mflag.FlagSet, reload func(*daemon.Config)) {
  45. c := make(chan os.Signal, 1)
  46. signal.Notify(c, syscall.SIGHUP)
  47. go func() {
  48. for range c {
  49. daemon.ReloadConfiguration(configFile, flags, reload)
  50. }
  51. }()
  52. }