dotcloud/docker

//go:build linux || freebsd

package daemon // import "github.com/docker/docker/daemon"

import (
    "bytes"
    "strconv"

    "github.com/docker/docker/daemon/config"
)

// reloadPlatform updates configuration with platform specific options
// and updates the passed attributes
func (daemon *Daemon) reloadPlatform(txn *reloadTxn, newCfg *configStore, conf *config.Config, attributes map[string]string) error {
    if conf.DefaultRuntime != "" {
        newCfg.DefaultRuntime = conf.DefaultRuntime
    }
    if conf.IsValueSet("runtimes") {
        newCfg.Config.Runtimes = conf.Runtimes
    }
    var err error
    newCfg.Runtimes, err = setupRuntimes(&newCfg.Config)
    if err != nil {
        return err
    }

    if conf.IsValueSet("default-shm-size") {
        newCfg.ShmSize = conf.ShmSize
    }

    if conf.CgroupNamespaceMode != "" {
        newCfg.CgroupNamespaceMode = conf.CgroupNamespaceMode
    }

    if conf.IpcMode != "" {
        newCfg.IpcMode = conf.IpcMode
    }

    // Update attributes
    var runtimeList bytes.Buffer
    for name, rt := range newCfg.Config.Runtimes {
        if runtimeList.Len() > 0 {
            runtimeList.WriteRune(' ')
        }
        runtimeList.WriteString(name + ":" + rt.Path)
    }

    attributes["runtimes"] = runtimeList.String()
    attributes["default-runtime"] = newCfg.DefaultRuntime
    attributes["default-shm-size"] = strconv.FormatInt(int64(newCfg.ShmSize), 10)
    attributes["default-ipc-mode"] = newCfg.IpcMode
    attributes["default-cgroupns-mode"] = newCfg.CgroupNamespaceMode
    return nil
}