github.com/kaisenlinux/docker.io@v0.0.0-20230510090727-ea55db55fac7/engine/runconfig/config_unix.go (about)

     1  //go:build !windows
     2  // +build !windows
     3  
     4  package runconfig // import "github.com/docker/docker/runconfig"
     5  
     6  import (
     7  	"github.com/docker/docker/api/types/container"
     8  	networktypes "github.com/docker/docker/api/types/network"
     9  )
    10  
    11  // ContainerConfigWrapper is a Config wrapper that holds the container Config (portable)
    12  // and the corresponding HostConfig (non-portable).
    13  type ContainerConfigWrapper struct {
    14  	*container.Config
    15  	InnerHostConfig       *container.HostConfig          `json:"HostConfig,omitempty"`
    16  	Cpuset                string                         `json:",omitempty"` // Deprecated. Exported for backwards compatibility.
    17  	NetworkingConfig      *networktypes.NetworkingConfig `json:"NetworkingConfig,omitempty"`
    18  	*container.HostConfig                                // Deprecated. Exported to read attributes from json that are not in the inner host config structure.
    19  }
    20  
    21  // getHostConfig gets the HostConfig of the Config.
    22  // It's mostly there to handle Deprecated fields of the ContainerConfigWrapper
    23  func (w *ContainerConfigWrapper) getHostConfig() *container.HostConfig {
    24  	hc := w.HostConfig
    25  
    26  	if hc == nil && w.InnerHostConfig != nil {
    27  		hc = w.InnerHostConfig
    28  	} else if w.InnerHostConfig != nil {
    29  		if hc.Memory != 0 && w.InnerHostConfig.Memory == 0 {
    30  			w.InnerHostConfig.Memory = hc.Memory
    31  		}
    32  		if hc.MemorySwap != 0 && w.InnerHostConfig.MemorySwap == 0 {
    33  			w.InnerHostConfig.MemorySwap = hc.MemorySwap
    34  		}
    35  		if hc.CPUShares != 0 && w.InnerHostConfig.CPUShares == 0 {
    36  			w.InnerHostConfig.CPUShares = hc.CPUShares
    37  		}
    38  		if hc.CpusetCpus != "" && w.InnerHostConfig.CpusetCpus == "" {
    39  			w.InnerHostConfig.CpusetCpus = hc.CpusetCpus
    40  		}
    41  
    42  		if hc.VolumeDriver != "" && w.InnerHostConfig.VolumeDriver == "" {
    43  			w.InnerHostConfig.VolumeDriver = hc.VolumeDriver
    44  		}
    45  
    46  		hc = w.InnerHostConfig
    47  	}
    48  
    49  	if hc != nil {
    50  		if w.Cpuset != "" && hc.CpusetCpus == "" {
    51  			hc.CpusetCpus = w.Cpuset
    52  		}
    53  	}
    54  
    55  	// Make sure NetworkMode has an acceptable value. We do this to ensure
    56  	// backwards compatible API behavior.
    57  	SetDefaultNetModeIfBlank(hc)
    58  
    59  	return hc
    60  }