mirror of
https://github.com/rancher/os.git
synced 2025-04-28 19:34:45 +00:00
105 lines
2.3 KiB
Go
105 lines
2.3 KiB
Go
package control
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import (
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"os"
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"os/exec"
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"syscall"
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"github.com/rancher/os/cmd/cloudinitexecute"
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"github.com/rancher/os/config"
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"github.com/rancher/os/pkg/docker"
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"github.com/rancher/os/pkg/log"
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"github.com/rancher/os/pkg/util"
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"github.com/codegangsta/cli"
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"golang.org/x/net/context"
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)
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const (
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ca = "/etc/ssl/certs/ca-certificates.crt"
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caBase = "/etc/ssl/certs/ca-certificates.crt.rancher"
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)
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func entrypointAction(c *cli.Context) error {
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if _, err := os.Stat("/host/dev"); err == nil {
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cmd := exec.Command("mount", "--rbind", "/host/dev", "/dev")
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if err := cmd.Run(); err != nil {
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log.Errorf("Failed to mount /dev: %v", err)
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}
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}
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if err := util.FileCopy(caBase, ca); err != nil && !os.IsNotExist(err) {
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log.Error(err)
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}
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cfg := config.LoadConfig()
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shouldWriteFiles := false
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for _, file := range cfg.WriteFiles {
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if file.Container != "" {
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shouldWriteFiles = true
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}
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}
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if shouldWriteFiles {
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writeFiles(cfg)
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}
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setupCommandSymlinks()
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if len(os.Args) < 3 {
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return nil
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}
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binary, err := exec.LookPath(os.Args[2])
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if err != nil {
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return err
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}
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return syscall.Exec(binary, os.Args[2:], os.Environ())
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}
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func writeFiles(cfg *config.CloudConfig) error {
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id, err := util.GetCurrentContainerID()
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if err != nil {
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return err
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}
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client, err := docker.NewSystemClient()
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if err != nil {
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return err
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}
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info, err := client.ContainerInspect(context.Background(), id)
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if err != nil {
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return err
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}
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cloudinitexecute.WriteFiles(cfg, info.Name[1:])
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return nil
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}
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func setupCommandSymlinks() {
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for _, link := range []symlink{
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{config.RosBin, "/usr/bin/autologin"},
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{config.RosBin, "/usr/bin/recovery"},
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{config.RosBin, "/usr/bin/cloud-init-execute"},
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{config.RosBin, "/usr/bin/cloud-init-save"},
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{config.RosBin, "/usr/bin/dockerlaunch"},
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{config.RosBin, "/usr/bin/respawn"},
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{config.RosBin, "/usr/sbin/netconf"},
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{config.RosBin, "/usr/sbin/wait-for-docker"},
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{config.RosBin, "/usr/sbin/poweroff"},
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{config.RosBin, "/usr/sbin/reboot"},
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{config.RosBin, "/usr/sbin/halt"},
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{config.RosBin, "/usr/sbin/shutdown"},
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{config.RosBin, "/sbin/poweroff"},
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{config.RosBin, "/sbin/reboot"},
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{config.RosBin, "/sbin/halt"},
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{config.RosBin, "/sbin/shutdown"},
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} {
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os.Remove(link.newname)
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if err := os.Symlink(link.oldname, link.newname); err != nil {
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log.Error(err)
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}
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}
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}
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