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-rw-r--r--libpod/container.go12
-rw-r--r--libpod/container_internal.go47
-rw-r--r--libpod/container_internal_linux.go25
-rw-r--r--libpod/oci_linux.go91
-rw-r--r--libpod/runtime_ctr.go6
5 files changed, 43 insertions, 138 deletions
diff --git a/libpod/container.go b/libpod/container.go
index 6d80a9bf4..739406e42 100644
--- a/libpod/container.go
+++ b/libpod/container.go
@@ -146,18 +146,12 @@ type ContainerState struct {
ConfigPath string `json:"configPath,omitempty"`
// RunDir is a per-boot directory for container content
RunDir string `json:"runDir,omitempty"`
- // DestinationRunDir is where the files in RunDir will be accessible for the container.
- // It is different than RunDir when using userNS
- DestinationRunDir string `json:"destinationRunDir,omitempty"`
// Mounted indicates whether the container's storage has been mounted
// for use
Mounted bool `json:"mounted,omitempty"`
// Mountpoint contains the path to the container's mounted storage as given
- // by containers/storage. It can be different than RealMountpoint when
- // usernamespaces are used
+ // by containers/storage.
Mountpoint string `json:"mountPoint,omitempty"`
- // RealMountpoint contains the path to the container's mounted storage
- RealMountpoint string `json:"realMountPoint,omitempty"`
// StartedTime is the time the container was started
StartedTime time.Time `json:"startedTime,omitempty"`
// FinishedTime is the time the container finished executing
@@ -186,10 +180,6 @@ type ContainerState struct {
// the path of the file on disk outside the container
BindMounts map[string]string `json:"bindMounts,omitempty"`
- // UserNSRoot is the directory used as root for the container when using
- // user namespaces.
- UserNSRoot string `json:"userNSRoot,omitempty"`
-
// ExtensionStageHooks holds hooks which will be executed by libpod
// and not delegated to the OCI runtime.
ExtensionStageHooks map[string][]spec.Hook `json:"extensionStageHooks,omitempty"`
diff --git a/libpod/container_internal.go b/libpod/container_internal.go
index 7a90bc7d4..daa32007a 100644
--- a/libpod/container_internal.go
+++ b/libpod/container_internal.go
@@ -310,23 +310,12 @@ func (c *Container) setupStorage(ctx context.Context) error {
}
if !rootless.IsRootless() && (len(c.config.IDMappings.UIDMap) != 0 || len(c.config.IDMappings.GIDMap) != 0) {
- info, err := os.Stat(c.runtime.config.TmpDir)
- if err != nil {
- return errors.Wrapf(err, "cannot stat `%s`", c.runtime.config.TmpDir)
- }
- if err := os.Chmod(c.runtime.config.TmpDir, info.Mode()|0111); err != nil {
- return errors.Wrapf(err, "cannot chmod `%s`", c.runtime.config.TmpDir)
- }
- root := filepath.Join(c.runtime.config.TmpDir, "containers-root", c.ID())
- if err := os.MkdirAll(root, 0755); err != nil {
- return errors.Wrapf(err, "error creating userNS tmpdir for container %s", c.ID())
- }
- if err := os.Chown(root, c.RootUID(), c.RootGID()); err != nil {
+ if err := os.Chown(containerInfo.RunDir, c.RootUID(), c.RootGID()); err != nil {
return err
}
- c.state.UserNSRoot, err = filepath.EvalSymlinks(root)
- if err != nil {
- return errors.Wrapf(err, "failed to eval symlinks for %s", root)
+
+ if err := os.Chown(containerInfo.Dir, c.RootUID(), c.RootGID()); err != nil {
+ return err
}
}
@@ -334,10 +323,6 @@ func (c *Container) setupStorage(ctx context.Context) error {
c.config.MountLabel = containerInfo.MountLabel
c.config.StaticDir = containerInfo.Dir
c.state.RunDir = containerInfo.RunDir
- c.state.DestinationRunDir = c.state.RunDir
- if c.state.UserNSRoot != "" {
- c.state.DestinationRunDir = filepath.Join(c.state.UserNSRoot, "rundir")
- }
// Set the default Entrypoint and Command
if containerInfo.Config != nil {
@@ -372,12 +357,6 @@ func (c *Container) teardownStorage() error {
return errors.Wrapf(err, "failed to cleanup container %s storage", c.ID())
}
- if c.state.UserNSRoot != "" {
- if err := os.RemoveAll(c.state.UserNSRoot); err != nil {
- return errors.Wrapf(err, "error removing userns root %q", c.state.UserNSRoot)
- }
- }
-
if err := c.runtime.storageService.DeleteContainer(c.ID()); err != nil {
// If the container has already been removed, warn but do not
// error - we wanted it gone, it is already gone.
@@ -432,6 +411,7 @@ func (c *Container) refresh() error {
if err != nil {
return errors.Wrapf(err, "error retrieving temporary directory for container %s", c.ID())
}
+ c.state.RunDir = dir
if len(c.config.IDMappings.UIDMap) != 0 || len(c.config.IDMappings.GIDMap) != 0 {
info, err := os.Stat(c.runtime.config.TmpDir)
@@ -448,16 +428,6 @@ func (c *Container) refresh() error {
if err := os.Chown(root, c.RootUID(), c.RootGID()); err != nil {
return err
}
- c.state.UserNSRoot, err = filepath.EvalSymlinks(root)
- if err != nil {
- return errors.Wrapf(err, "failed to eval symlinks for %s", root)
- }
- }
-
- c.state.RunDir = dir
- c.state.DestinationRunDir = c.state.RunDir
- if c.state.UserNSRoot != "" {
- c.state.DestinationRunDir = filepath.Join(c.state.UserNSRoot, "rundir")
}
// We need to pick up a new lock
@@ -1260,7 +1230,7 @@ func (c *Container) writeStringToRundir(destFile, output string) (string, error)
return "", err
}
- return filepath.Join(c.state.DestinationRunDir, destFile), nil
+ return filepath.Join(c.state.RunDir, destFile), nil
}
// appendStringToRundir appends the provided string to the runtimedir file
@@ -1277,7 +1247,7 @@ func (c *Container) appendStringToRundir(destFile, output string) (string, error
return "", errors.Wrapf(err, "unable to write %s", destFileName)
}
- return filepath.Join(c.state.DestinationRunDir, destFile), nil
+ return filepath.Join(c.state.RunDir, destFile), nil
}
// Save OCI spec to disk, replacing any existing specs for the container
@@ -1410,6 +1380,9 @@ func (c *Container) mount() (string, error) {
if err != nil {
return "", errors.Wrapf(err, "error resolving storage path for container %s", c.ID())
}
+ if err := os.Chown(mountPoint, c.RootUID(), c.RootGID()); err != nil {
+ return "", errors.Wrapf(err, "cannot chown %s to %d:%d", mountPoint, c.RootUID(), c.RootGID())
+ }
return mountPoint, nil
}
diff --git a/libpod/container_internal_linux.go b/libpod/container_internal_linux.go
index 23de1aa01..504d6c135 100644
--- a/libpod/container_internal_linux.go
+++ b/libpod/container_internal_linux.go
@@ -25,7 +25,6 @@ import (
"github.com/containers/libpod/pkg/lookup"
"github.com/containers/libpod/pkg/resolvconf"
"github.com/containers/libpod/pkg/rootless"
- "github.com/containers/storage/pkg/idtools"
"github.com/cyphar/filepath-securejoin"
"github.com/opencontainers/runc/libcontainer/user"
spec "github.com/opencontainers/runtime-spec/specs-go"
@@ -99,11 +98,6 @@ func (c *Container) prepare() (err error) {
// Finish up mountStorage
c.state.Mounted = true
c.state.Mountpoint = mountPoint
- if c.state.UserNSRoot == "" {
- c.state.RealMountpoint = c.state.Mountpoint
- } else {
- c.state.RealMountpoint = filepath.Join(c.state.UserNSRoot, "mountpoint")
- }
logrus.Debugf("Created root filesystem for container %s at %s", c.ID(), c.state.Mountpoint)
}()
@@ -220,13 +214,6 @@ func (c *Container) generateSpec(ctx context.Context) (*spec.Spec, error) {
}
}
m.Options = options
-
- // If we are using a user namespace, we will use an intermediate
- // directory to bind mount volumes
- if c.state.UserNSRoot != "" && strings.HasPrefix(m.Source, c.runtime.config.VolumePath) {
- newSourceDir := filepath.Join(c.state.UserNSRoot, "volumes")
- m.Source = strings.Replace(m.Source, c.runtime.config.VolumePath, newSourceDir, 1)
- }
}
g.SetProcessSelinuxLabel(c.ProcessLabel())
@@ -313,13 +300,7 @@ func (c *Container) generateSpec(ctx context.Context) (*spec.Spec, error) {
}
}
- if c.config.Rootfs == "" {
- if err := idtools.MkdirAllAs(c.state.RealMountpoint, 0700, c.RootUID(), c.RootGID()); err != nil {
- return nil, err
- }
- }
-
- g.SetRootPath(c.state.RealMountpoint)
+ g.SetRootPath(c.state.Mountpoint)
g.AddAnnotation(crioAnnotations.Created, c.config.CreatedTime.Format(time.RFC3339Nano))
g.AddAnnotation("org.opencontainers.image.stopSignal", fmt.Sprintf("%d", c.config.StopSignal))
@@ -820,7 +801,7 @@ func (c *Container) makeBindMounts() error {
}
// Add Secret Mounts
- secretMounts := secrets.SecretMountsWithUIDGID(c.config.MountLabel, c.state.RunDir, c.runtime.config.DefaultMountsFile, c.state.DestinationRunDir, c.RootUID(), c.RootGID(), rootless.IsRootless())
+ secretMounts := secrets.SecretMountsWithUIDGID(c.config.MountLabel, c.state.RunDir, c.runtime.config.DefaultMountsFile, c.state.RunDir, c.RootUID(), c.RootGID(), rootless.IsRootless())
for _, mount := range secretMounts {
if _, ok := c.state.BindMounts[mount.Destination]; !ok {
c.state.BindMounts[mount.Destination] = mount.Source
@@ -907,7 +888,7 @@ func (c *Container) generateResolvConf() (string, error) {
return "", err
}
- return filepath.Join(c.state.DestinationRunDir, "resolv.conf"), nil
+ return filepath.Join(c.state.RunDir, "resolv.conf"), nil
}
// generateHosts creates a containers hosts file
diff --git a/libpod/oci_linux.go b/libpod/oci_linux.go
index f85c5ee62..8c0abad80 100644
--- a/libpod/oci_linux.go
+++ b/libpod/oci_linux.go
@@ -3,17 +3,14 @@
package libpod
import (
- "fmt"
"os"
"os/exec"
"path/filepath"
- "runtime"
"strings"
- "sync"
+ "syscall"
"github.com/containerd/cgroups"
"github.com/containers/libpod/utils"
- "github.com/containers/storage/pkg/idtools"
spec "github.com/opencontainers/runtime-spec/specs-go"
"github.com/sirupsen/logrus"
"golang.org/x/sys/unix"
@@ -62,72 +59,40 @@ func newPipe() (parent *os.File, child *os.File, err error) {
return os.NewFile(uintptr(fds[1]), "parent"), os.NewFile(uintptr(fds[0]), "child"), nil
}
-// CreateContainer creates a container in the OCI runtime
-// TODO terminal support for container
-// Presently just ignoring conmon opts related to it
-func (r *OCIRuntime) createContainer(ctr *Container, cgroupParent string, restoreOptions *ContainerCheckpointOptions) (err error) {
- if ctr.state.UserNSRoot == "" {
- // no need of an intermediate mount ns
- return r.createOCIContainer(ctr, cgroupParent, restoreOptions)
- }
- var wg sync.WaitGroup
- wg.Add(1)
- go func() {
- defer wg.Done()
- runtime.LockOSThread()
-
- var fd *os.File
- fd, err = os.Open(fmt.Sprintf("/proc/%d/task/%d/ns/mnt", os.Getpid(), unix.Gettid()))
+// makeAccessible changes the path permission and each parent directory to have --x--x--x
+func makeAccessible(path string, uid, gid int) error {
+ for ; path != "/"; path = filepath.Dir(path) {
+ st, err := os.Stat(path)
if err != nil {
- return
- }
- defer fd.Close()
-
- // create a new mountns on the current thread
- if err = unix.Unshare(unix.CLONE_NEWNS); err != nil {
- return
- }
- defer unix.Setns(int(fd.Fd()), unix.CLONE_NEWNS)
-
- // don't spread our mounts around
- err = unix.Mount("/", "/", "none", unix.MS_REC|unix.MS_SLAVE, "")
- if err != nil {
- return
- }
- err = unix.Mount(ctr.state.Mountpoint, ctr.state.RealMountpoint, "none", unix.MS_BIND, "")
- if err != nil {
- return
+ if os.IsNotExist(err) {
+ return nil
+ }
+ return err
}
- if err := idtools.MkdirAllAs(ctr.state.DestinationRunDir, 0700, ctr.RootUID(), ctr.RootGID()); err != nil {
- return
+ if int(st.Sys().(*syscall.Stat_t).Uid) == uid && int(st.Sys().(*syscall.Stat_t).Gid) == gid {
+ continue
}
-
- err = unix.Mount(ctr.state.RunDir, ctr.state.DestinationRunDir, "none", unix.MS_BIND, "")
- if err != nil {
- return
+ if st.Mode()&0111 != 0111 {
+ if err := os.Chmod(path, os.FileMode(st.Mode()|0111)); err != nil {
+ return err
+ }
}
+ }
+ return nil
+}
- if ctr.state.UserNSRoot != "" {
- _, err := os.Stat(ctr.runtime.config.VolumePath)
- if err != nil && !os.IsNotExist(err) {
- return
- }
- if err == nil {
- volumesTarget := filepath.Join(ctr.state.UserNSRoot, "volumes")
- if err := idtools.MkdirAs(volumesTarget, 0700, ctr.RootUID(), ctr.RootGID()); err != nil {
- return
- }
- if err = unix.Mount(ctr.runtime.config.VolumePath, volumesTarget, "none", unix.MS_BIND, ""); err != nil {
- return
- }
+// CreateContainer creates a container in the OCI runtime
+// TODO terminal support for container
+// Presently just ignoring conmon opts related to it
+func (r *OCIRuntime) createContainer(ctr *Container, cgroupParent string, restoreOptions *ContainerCheckpointOptions) (err error) {
+ if len(ctr.config.IDMappings.UIDMap) != 0 || len(ctr.config.IDMappings.GIDMap) != 0 {
+ for _, i := range []string{ctr.state.RunDir, ctr.runtime.config.TmpDir, ctr.config.StaticDir, ctr.state.Mountpoint, ctr.runtime.config.VolumePath} {
+ if err := makeAccessible(i, ctr.RootUID(), ctr.RootGID()); err != nil {
+ return err
}
}
-
- err = r.createOCIContainer(ctr, cgroupParent, restoreOptions)
- }()
- wg.Wait()
-
- return err
+ }
+ return r.createOCIContainer(ctr, cgroupParent, restoreOptions)
}
func rpmVersion(path string) string {
diff --git a/libpod/runtime_ctr.go b/libpod/runtime_ctr.go
index 17340f56d..506aee477 100644
--- a/libpod/runtime_ctr.go
+++ b/libpod/runtime_ctr.go
@@ -201,11 +201,7 @@ func (r *Runtime) newContainer(ctx context.Context, rSpec *spec.Spec, options ..
}
if !MountExists(ctr.config.Spec.Mounts, "/dev/shm") && ctr.config.ShmDir == "" {
- if ctr.state.UserNSRoot == "" {
- ctr.config.ShmDir = filepath.Join(ctr.bundlePath(), "shm")
- } else {
- ctr.config.ShmDir = filepath.Join(ctr.state.UserNSRoot, "shm")
- }
+ ctr.config.ShmDir = filepath.Join(ctr.bundlePath(), "shm")
if err := os.MkdirAll(ctr.config.ShmDir, 0700); err != nil {
if !os.IsExist(err) {
return nil, errors.Wrapf(err, "unable to create shm %q dir", ctr.config.ShmDir)
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-12-27 22:16:06 +0000