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moby--moby/libcontainerd/client_daemon_linux.go
Kenfe-Mickael Laventure ddae20c032
Update libcontainerd to use containerd 1.0
Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>
2017-10-20 07:11:37 -07:00

96 lines
2.3 KiB
Go

package libcontainerd
import (
"context"
"fmt"
"os"
"path/filepath"
"strings"
"github.com/containerd/containerd"
"github.com/docker/docker/pkg/idtools"
specs "github.com/opencontainers/runtime-spec/specs-go"
)
func summaryFromInterface(i interface{}) (*Summary, error) {
return &Summary{}, nil
}
func (c *client) UpdateResources(ctx context.Context, containerID string, resources *Resources) error {
p, err := c.getProcess(containerID, InitProcessName)
if err != nil {
return err
}
// go doesn't like the alias in 1.8, this means this need to be
// platform specific
return p.(containerd.Task).Update(ctx, containerd.WithResources((*specs.LinuxResources)(resources)))
}
func hostIDFromMap(id uint32, mp []specs.LinuxIDMapping) int {
for _, m := range mp {
if id >= m.ContainerID && id <= m.ContainerID+m.Size-1 {
return int(m.HostID + id - m.ContainerID)
}
}
return 0
}
func getSpecUser(ociSpec *specs.Spec) (int, int) {
var (
uid int
gid int
)
for _, ns := range ociSpec.Linux.Namespaces {
if ns.Type == specs.UserNamespace {
uid = hostIDFromMap(0, ociSpec.Linux.UIDMappings)
gid = hostIDFromMap(0, ociSpec.Linux.GIDMappings)
break
}
}
return uid, gid
}
func prepareBundleDir(bundleDir string, ociSpec *specs.Spec) (string, error) {
uid, gid := getSpecUser(ociSpec)
if uid == 0 && gid == 0 {
return bundleDir, idtools.MkdirAllAndChownNew(bundleDir, 0755, idtools.IDPair{0, 0})
}
p := string(filepath.Separator)
components := strings.Split(bundleDir, string(filepath.Separator))
for _, d := range components[1:] {
p = filepath.Join(p, d)
fi, err := os.Stat(p)
if err != nil && !os.IsNotExist(err) {
return "", err
}
if os.IsNotExist(err) || fi.Mode()&1 == 0 {
p = fmt.Sprintf("%s.%d.%d", p, uid, gid)
if err := idtools.MkdirAndChown(p, 0700, idtools.IDPair{uid, gid}); err != nil && !os.IsExist(err) {
return "", err
}
}
}
return p, nil
}
func newFIFOSet(bundleDir, containerID, processID string, withStdin, withTerminal bool) *containerd.FIFOSet {
fifos := &containerd.FIFOSet{
Terminal: withTerminal,
Out: filepath.Join(bundleDir, processID+"-stdout"),
}
if withStdin {
fifos.In = filepath.Join(bundleDir, processID+"-stdin")
}
if !fifos.Terminal {
fifos.Err = filepath.Join(bundleDir, processID+"-stderr")
}
return fifos
}