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677a6b3506
Read configuration after flags making this the priority: 1- Apply configuration from file. 2- Apply configuration from flags. Reload configuration when a signal is received, USR2 in Linux: - Reload router if the debug configuration changes. - Reload daemon labels. - Reload cluster discovery. Signed-off-by: David Calavera <david.calavera@gmail.com>
65 lines
1.6 KiB
Go
65 lines
1.6 KiB
Go
// +build daemon,!windows
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package main
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import (
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"fmt"
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"os"
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"os/signal"
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"syscall"
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apiserver "github.com/docker/docker/api/server"
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"github.com/docker/docker/daemon"
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"github.com/docker/docker/pkg/mflag"
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"github.com/docker/docker/pkg/system"
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_ "github.com/docker/docker/daemon/execdriver/native"
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)
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const defaultDaemonConfigFile = "/etc/docker/daemon.json"
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func setPlatformServerConfig(serverConfig *apiserver.Config, daemonCfg *daemon.Config) *apiserver.Config {
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serverConfig.SocketGroup = daemonCfg.SocketGroup
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serverConfig.EnableCors = daemonCfg.EnableCors
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serverConfig.CorsHeaders = daemonCfg.CorsHeaders
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return serverConfig
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}
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// currentUserIsOwner checks whether the current user is the owner of the given
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// file.
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func currentUserIsOwner(f string) bool {
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if fileInfo, err := system.Stat(f); err == nil && fileInfo != nil {
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if int(fileInfo.UID()) == os.Getuid() {
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return true
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}
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}
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return false
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}
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// setDefaultUmask sets the umask to 0022 to avoid problems
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// caused by custom umask
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func setDefaultUmask() error {
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desiredUmask := 0022
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syscall.Umask(desiredUmask)
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if umask := syscall.Umask(desiredUmask); umask != desiredUmask {
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return fmt.Errorf("failed to set umask: expected %#o, got %#o", desiredUmask, umask)
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}
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return nil
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}
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func getDaemonConfDir() string {
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return "/etc/docker"
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}
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// setupConfigReloadTrap configures the USR2 signal to reload the configuration.
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func setupConfigReloadTrap(configFile string, flags *mflag.FlagSet, reload func(*daemon.Config)) {
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c := make(chan os.Signal, 1)
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signal.Notify(c, syscall.SIGHUP)
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go func() {
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for range c {
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daemon.ReloadConfiguration(configFile, flags, reload)
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}
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}()
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}
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