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97 lines
2.7 KiB
Go
97 lines
2.7 KiB
Go
package daemon
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import (
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"context"
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containerd "github.com/containerd/containerd/v2/client"
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"github.com/containerd/containerd/v2/pkg/apparmor"
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coci "github.com/containerd/containerd/v2/pkg/oci"
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"github.com/docker/docker/container"
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"github.com/docker/docker/daemon/config"
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"github.com/docker/docker/oci/caps"
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"github.com/opencontainers/runtime-spec/specs-go"
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)
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func getUserFromContainerd(ctx context.Context, containerdCli *containerd.Client, ec *container.ExecConfig) (specs.User, error) {
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ctr, err := containerdCli.LoadContainer(ctx, ec.Container.ID)
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if err != nil {
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return specs.User{}, err
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}
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cinfo, err := ctr.Info(ctx)
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if err != nil {
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return specs.User{}, err
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}
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spec, err := ctr.Spec(ctx)
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if err != nil {
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return specs.User{}, err
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}
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opts := []coci.SpecOpts{
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coci.WithUser(ec.User),
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coci.WithAdditionalGIDs(ec.User),
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coci.WithAppendAdditionalGroups(ec.Container.HostConfig.GroupAdd...),
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}
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for _, opt := range opts {
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if err := opt(ctx, containerdCli, &cinfo, spec); err != nil {
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return specs.User{}, err
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}
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}
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return spec.Process.User, nil
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}
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func (daemon *Daemon) execSetPlatformOpt(ctx context.Context, daemonCfg *config.Config, ec *container.ExecConfig, p *specs.Process) error {
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if ec.User != "" {
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var err error
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if daemon.UsesSnapshotter() {
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p.User, err = getUserFromContainerd(ctx, daemon.containerdClient, ec)
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if err != nil {
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return err
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}
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} else {
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p.User, err = getUser(ec.Container, ec.User)
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if err != nil {
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return err
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}
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}
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}
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if ec.Privileged {
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p.Capabilities = &specs.LinuxCapabilities{
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Bounding: caps.GetAllCapabilities(),
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Permitted: caps.GetAllCapabilities(),
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Effective: caps.GetAllCapabilities(),
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}
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}
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if apparmor.HostSupports() {
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var appArmorProfile string
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if ec.Container.AppArmorProfile != "" {
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appArmorProfile = ec.Container.AppArmorProfile
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} else if ec.Container.HostConfig.Privileged {
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// `docker exec --privileged` does not currently disable AppArmor
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// profiles. Privileged configuration of the container is inherited
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appArmorProfile = unconfinedAppArmorProfile
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} else {
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appArmorProfile = defaultAppArmorProfile
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}
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if appArmorProfile == defaultAppArmorProfile {
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// Unattended upgrades and other fun services can unload AppArmor
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// profiles inadvertently. Since we cannot store our profile in
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// /etc/apparmor.d, nor can we practically add other ways of
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// telling the system to keep our profile loaded, in order to make
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// sure that we keep the default profile enabled we dynamically
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// reload it if necessary.
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if err := ensureDefaultAppArmorProfile(); err != nil {
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return err
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}
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}
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p.ApparmorProfile = appArmorProfile
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}
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s := &specs.Spec{Process: p}
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return withRlimits(daemon, daemonCfg, ec.Container)(ctx, nil, nil, s)
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}
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