f350b53241
ref: https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
90 lines
2.5 KiB
Go
90 lines
2.5 KiB
Go
package runconfig // import "github.com/docker/docker/runconfig"
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import (
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"encoding/json"
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"io"
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"github.com/docker/docker/api/types/container"
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networktypes "github.com/docker/docker/api/types/network"
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"github.com/docker/docker/pkg/sysinfo"
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)
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// ContainerDecoder implements httputils.ContainerDecoder
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// calling DecodeContainerConfig.
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type ContainerDecoder struct {
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GetSysInfo func() *sysinfo.SysInfo
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}
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// DecodeConfig makes ContainerDecoder to implement httputils.ContainerDecoder
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func (r ContainerDecoder) DecodeConfig(src io.Reader) (*container.Config, *container.HostConfig, *networktypes.NetworkingConfig, error) {
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var si *sysinfo.SysInfo
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if r.GetSysInfo != nil {
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si = r.GetSysInfo()
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} else {
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si = sysinfo.New(true)
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}
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return decodeContainerConfig(src, si)
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}
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// DecodeHostConfig makes ContainerDecoder to implement httputils.ContainerDecoder
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func (r ContainerDecoder) DecodeHostConfig(src io.Reader) (*container.HostConfig, error) {
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return decodeHostConfig(src)
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}
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// decodeContainerConfig decodes a json encoded config into a ContainerConfigWrapper
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// struct and returns both a Config and a HostConfig struct
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// Be aware this function is not checking whether the resulted structs are nil,
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// it's your business to do so
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func decodeContainerConfig(src io.Reader, si *sysinfo.SysInfo) (*container.Config, *container.HostConfig, *networktypes.NetworkingConfig, error) {
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var w ContainerConfigWrapper
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decoder := json.NewDecoder(src)
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if err := decoder.Decode(&w); err != nil {
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return nil, nil, nil, err
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}
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hc := w.getHostConfig()
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// Perform platform-specific processing of Volumes and Binds.
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if w.Config != nil && hc != nil {
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// Initialize the volumes map if currently nil
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if w.Config.Volumes == nil {
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w.Config.Volumes = make(map[string]struct{})
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}
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}
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// Certain parameters need daemon-side validation that cannot be done
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// on the client, as only the daemon knows what is valid for the platform.
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if err := validateNetMode(w.Config, hc); err != nil {
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return nil, nil, nil, err
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}
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// Validate isolation
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if err := validateIsolation(hc); err != nil {
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return nil, nil, nil, err
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}
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// Validate QoS
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if err := validateQoS(hc); err != nil {
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return nil, nil, nil, err
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}
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// Validate Resources
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if err := validateResources(hc, si); err != nil {
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return nil, nil, nil, err
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}
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// Validate Privileged
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if err := validatePrivileged(hc); err != nil {
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return nil, nil, nil, err
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}
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// Validate ReadonlyRootfs
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if err := validateReadonlyRootfs(hc); err != nil {
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return nil, nil, nil, err
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}
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return w.Config, hc, w.NetworkingConfig, nil
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}
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