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output: Add ucode.cpio to the tar-kernel-initrd format

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Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
This commit is contained in:
Rolf Neugebauer 2018-01-15 15:45:16 +00:00
parent 2b1a611bab
commit 1d24454438
1 changed files with 16 additions and 4 deletions
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20
src/moby/output.go
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@ -39,12 +39,11 @@ var outFuns = map[string]func(string, io.Reader, int) error{
return nil
},
"tar-kernel-initrd": func(base string, image io.Reader, size int) error {
kernel, initrd, cmdline, _, err := tarToInitrd(image)
kernel, initrd, cmdline, ucode, err := tarToInitrd(image)
if err != nil {
return fmt.Errorf("Error converting to initrd: %v", err)
}
// TODO: Handle ucode
if err := outputKernelInitrdTarball(base, kernel, initrd, cmdline); err != nil {
if err := outputKernelInitrdTarball(base, kernel, initrd, cmdline, ucode); err != nil {
return fmt.Errorf("Error writing kernel+initrd tarball output: %v", err)
}
return nil
@ -332,7 +331,7 @@ func outputKernelInitrd(base string, kernel []byte, initrd []byte, cmdline strin
return ioutil.WriteFile(base+"-cmdline", []byte(cmdline), os.FileMode(0644))
}
func outputKernelInitrdTarball(base string, kernel []byte, initrd []byte, cmdline string) error {
func outputKernelInitrdTarball(base string, kernel []byte, initrd []byte, cmdline string, ucode []byte) error {
log.Debugf("output kernel/initrd tarball: %s %s", base, cmdline)
log.Infof(" %s", base+"-initrd.tar")
f, err := os.Create(base + "-initrd.tar")
@ -374,5 +373,18 @@ func outputKernelInitrdTarball(base string, kernel []byte, initrd []byte, cmdlin
if _, err := tw.Write([]byte(cmdline)); err != nil {
return err
}
if len(ucode) != 0 {
hdr := &tar.Header{
Name: "ucode.cpio",
Mode: 0644,
Size: int64(len(ucode)),
}
if err := tw.WriteHeader(hdr); err != nil {
return err
}
if _, err := tw.Write(ucode); err != nil {
return err
}
}
return tw.Close()
}