mirror of
https://github.com/containers/podman.git
synced 2025-08-06 19:44:14 +08:00
1ae410d19e
Docker has, for unclear reasons, three separate fields in their Create Container struct in which volumes can be placed. Right now we support two of those - Binds and Mounts, which (roughly) correspond to `-v` and `--mount` respectively. Unfortunately, we did not support the third, `Volumes`, which is used for anonymous named volumes created by `-v` (e.g. `-v /test`). It seems that volumes listed here are *not* included in the remaining two from my investigation, so it should be safe to just append them into our handling of the `Binds` (`-v`) field. Fixes #8649 Signed-off-by: Matthew Heon <mheon@redhat.com>
549 lines
15 KiB
Go
549 lines
15 KiB
Go
package common
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import (
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"fmt"
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"net"
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"path/filepath"
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"strconv"
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"strings"
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"github.com/containers/podman/v2/cmd/podman/registry"
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"github.com/containers/podman/v2/pkg/api/handlers"
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"github.com/containers/podman/v2/pkg/cgroups"
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"github.com/containers/podman/v2/pkg/domain/entities"
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"github.com/containers/podman/v2/pkg/rootless"
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"github.com/containers/podman/v2/pkg/specgen"
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)
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type ContainerCLIOpts struct {
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Annotation []string
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Attach []string
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Authfile string
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BlkIOWeight string
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BlkIOWeightDevice []string
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CapAdd []string
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CapDrop []string
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CgroupNS string
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CGroupsMode string
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CGroupParent string
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CIDFile string
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ConmonPIDFile string
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CPUPeriod uint64
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CPUQuota int64
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CPURTPeriod uint64
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CPURTRuntime int64
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CPUShares uint64
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CPUS float64
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CPUSetCPUs string
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CPUSetMems string
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Devices []string
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DeviceCGroupRule []string
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DeviceReadBPs []string
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DeviceReadIOPs []string
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DeviceWriteBPs []string
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DeviceWriteIOPs []string
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Entrypoint *string
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Env []string
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EnvHost bool
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EnvFile []string
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Expose []string
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GIDMap []string
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GroupAdd []string
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HealthCmd string
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HealthInterval string
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HealthRetries uint
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HealthStartPeriod string
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HealthTimeout string
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Hostname string
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HTTPProxy bool
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ImageVolume string
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Init bool
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InitPath string
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Interactive bool
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IPC string
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KernelMemory string
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Label []string
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LabelFile []string
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LogDriver string
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LogOptions []string
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Memory string
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MemoryReservation string
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MemorySwap string
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MemorySwappiness int64
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Name string
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NoHealthCheck bool
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OOMKillDisable bool
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OOMScoreAdj int
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Arch string
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OS string
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Variant string
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PID string
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PIDsLimit *int64
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Platform string
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Pod string
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PodIDFile string
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PreserveFDs uint
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Privileged bool
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PublishAll bool
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Pull string
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Quiet bool
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ReadOnly bool
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ReadOnlyTmpFS bool
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Restart string
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Replace bool
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Rm bool
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RootFS bool
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SecurityOpt []string
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SdNotifyMode string
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ShmSize string
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SignaturePolicy string
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StopSignal string
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StopTimeout uint
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StorageOpt []string
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SubUIDName string
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SubGIDName string
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Sysctl []string
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Systemd string
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TmpFS []string
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TTY bool
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Timezone string
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Umask string
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UIDMap []string
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Ulimit []string
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User string
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UserNS string
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UTS string
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Mount []string
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Volume []string
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VolumesFrom []string
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Workdir string
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SeccompPolicy string
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Net *entities.NetOptions
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CgroupConf []string
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}
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func stringMaptoArray(m map[string]string) []string {
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a := make([]string, 0, len(m))
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for k, v := range m {
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a = append(a, fmt.Sprintf("%s=%s", k, v))
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}
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return a
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}
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// ContainerCreateToContainerCLIOpts converts a compat input struct to cliopts so it can be converted to
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// a specgen spec.
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func ContainerCreateToContainerCLIOpts(cc handlers.CreateContainerConfig, cgroupsManager string) (*ContainerCLIOpts, []string, error) {
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var (
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capAdd []string
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cappDrop []string
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entrypoint *string
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init bool
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specPorts []specgen.PortMapping
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)
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if cc.HostConfig.Init != nil {
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init = *cc.HostConfig.Init
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}
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// Iterate devices and convert back to string
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devices := make([]string, 0, len(cc.HostConfig.Devices))
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for _, dev := range cc.HostConfig.Devices {
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devices = append(devices, fmt.Sprintf("%s:%s:%s", dev.PathOnHost, dev.PathInContainer, dev.CgroupPermissions))
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}
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// iterate blkreaddevicebps
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readBps := make([]string, 0, len(cc.HostConfig.BlkioDeviceReadBps))
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for _, dev := range cc.HostConfig.BlkioDeviceReadBps {
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readBps = append(readBps, dev.String())
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}
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// iterate blkreaddeviceiops
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readIops := make([]string, 0, len(cc.HostConfig.BlkioDeviceReadIOps))
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for _, dev := range cc.HostConfig.BlkioDeviceReadIOps {
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readIops = append(readIops, dev.String())
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}
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// iterate blkwritedevicebps
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writeBps := make([]string, 0, len(cc.HostConfig.BlkioDeviceWriteBps))
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for _, dev := range cc.HostConfig.BlkioDeviceWriteBps {
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writeBps = append(writeBps, dev.String())
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}
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// iterate blkwritedeviceiops
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writeIops := make([]string, 0, len(cc.HostConfig.BlkioDeviceWriteIOps))
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for _, dev := range cc.HostConfig.BlkioDeviceWriteIOps {
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writeIops = append(writeIops, dev.String())
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}
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// entrypoint
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// can be a string or slice. if it is a slice, we need to
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// marshall it to json; otherwise it should just be the string
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// value
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if len(cc.Config.Entrypoint) > 0 {
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entrypoint = &cc.Config.Entrypoint[0]
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if len(cc.Config.Entrypoint) > 1 {
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b, err := json.Marshal(cc.Config.Entrypoint)
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if err != nil {
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return nil, nil, err
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}
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var jsonString = string(b)
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entrypoint = &jsonString
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}
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}
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// expose ports
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expose := make([]string, 0, len(cc.Config.ExposedPorts))
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for p := range cc.Config.ExposedPorts {
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expose = append(expose, fmt.Sprintf("%s/%s", p.Port(), p.Proto()))
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}
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// mounts type=tmpfs/bind,source=,dest=,opt=val
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// TODO options
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mounts := make([]string, 0, len(cc.HostConfig.Mounts))
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for _, m := range cc.HostConfig.Mounts {
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mount := fmt.Sprintf("type=%s", m.Type)
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if len(m.Source) > 0 {
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mount += fmt.Sprintf(",source=%s", m.Source)
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}
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if len(m.Target) > 0 {
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mount += fmt.Sprintf(",dst=%s", m.Target)
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}
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mounts = append(mounts, mount)
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}
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// dns
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dns := make([]net.IP, 0, len(cc.HostConfig.DNS))
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for _, d := range cc.HostConfig.DNS {
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dns = append(dns, net.ParseIP(d))
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}
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// publish
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for port, pbs := range cc.HostConfig.PortBindings {
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for _, pb := range pbs {
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hostport, err := strconv.Atoi(pb.HostPort)
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if err != nil {
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return nil, nil, err
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}
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tmpPort := specgen.PortMapping{
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HostIP: pb.HostIP,
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ContainerPort: uint16(port.Int()),
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HostPort: uint16(hostport),
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Range: 0,
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Protocol: port.Proto(),
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}
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specPorts = append(specPorts, tmpPort)
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}
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}
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// netMode
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nsmode, _, err := specgen.ParseNetworkNamespace(string(cc.HostConfig.NetworkMode))
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if err != nil {
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return nil, nil, err
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}
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netNS := specgen.Namespace{
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NSMode: nsmode.NSMode,
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Value: nsmode.Value,
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}
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// network
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// Note: we cannot emulate compat exactly here. we only allow specifics of networks to be
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// defined when there is only one network.
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netInfo := entities.NetOptions{
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AddHosts: cc.HostConfig.ExtraHosts,
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DNSOptions: cc.HostConfig.DNSOptions,
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DNSSearch: cc.HostConfig.DNSSearch,
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DNSServers: dns,
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Network: netNS,
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PublishPorts: specPorts,
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}
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// network names
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switch {
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case len(cc.NetworkingConfig.EndpointsConfig) > 0:
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var aliases []string
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endpointsConfig := cc.NetworkingConfig.EndpointsConfig
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cniNetworks := make([]string, 0, len(endpointsConfig))
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for netName, endpoint := range endpointsConfig {
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cniNetworks = append(cniNetworks, netName)
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if endpoint == nil {
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continue
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}
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if len(endpoint.Aliases) > 0 {
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aliases = append(aliases, endpoint.Aliases...)
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}
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}
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// static IP and MAC
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if len(endpointsConfig) == 1 {
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for _, ep := range endpointsConfig {
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if ep == nil {
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continue
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}
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// if IP address is provided
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if len(ep.IPAddress) > 0 {
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staticIP := net.ParseIP(ep.IPAddress)
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netInfo.StaticIP = &staticIP
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}
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// If MAC address is provided
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if len(ep.MacAddress) > 0 {
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staticMac, err := net.ParseMAC(ep.MacAddress)
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if err != nil {
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return nil, nil, err
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}
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netInfo.StaticMAC = &staticMac
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}
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break
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}
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}
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netInfo.Aliases = aliases
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netInfo.CNINetworks = cniNetworks
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case len(cc.HostConfig.NetworkMode) > 0:
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netInfo.CNINetworks = []string{string(cc.HostConfig.NetworkMode)}
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}
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// Note: several options here are marked as "don't need". this is based
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// on speculation by Matt and I. We think that these come into play later
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// like with start. We believe this is just a difference in podman/compat
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cliOpts := ContainerCLIOpts{
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// Attach: nil, // don't need?
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Authfile: "",
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CapAdd: append(capAdd, cc.HostConfig.CapAdd...),
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CapDrop: append(cappDrop, cc.HostConfig.CapDrop...),
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CGroupParent: cc.HostConfig.CgroupParent,
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CIDFile: cc.HostConfig.ContainerIDFile,
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CPUPeriod: uint64(cc.HostConfig.CPUPeriod),
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CPUQuota: cc.HostConfig.CPUQuota,
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CPURTPeriod: uint64(cc.HostConfig.CPURealtimePeriod),
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CPURTRuntime: cc.HostConfig.CPURealtimeRuntime,
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CPUShares: uint64(cc.HostConfig.CPUShares),
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// CPUS: 0, // don't need?
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CPUSetCPUs: cc.HostConfig.CpusetCpus,
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CPUSetMems: cc.HostConfig.CpusetMems,
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// Detach: false, // don't need
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// DetachKeys: "", // don't need
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Devices: devices,
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DeviceCGroupRule: nil,
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DeviceReadBPs: readBps,
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DeviceReadIOPs: readIops,
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DeviceWriteBPs: writeBps,
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DeviceWriteIOPs: writeIops,
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Entrypoint: entrypoint,
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Env: cc.Config.Env,
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Expose: expose,
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GroupAdd: cc.HostConfig.GroupAdd,
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Hostname: cc.Config.Hostname,
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ImageVolume: "bind",
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Init: init,
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Interactive: cc.Config.OpenStdin,
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IPC: string(cc.HostConfig.IpcMode),
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Label: stringMaptoArray(cc.Config.Labels),
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LogDriver: cc.HostConfig.LogConfig.Type,
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LogOptions: stringMaptoArray(cc.HostConfig.LogConfig.Config),
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Name: cc.Name,
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OOMScoreAdj: cc.HostConfig.OomScoreAdj,
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Arch: "",
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OS: "",
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Variant: "",
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PID: string(cc.HostConfig.PidMode),
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PIDsLimit: cc.HostConfig.PidsLimit,
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Privileged: cc.HostConfig.Privileged,
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PublishAll: cc.HostConfig.PublishAllPorts,
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Quiet: false,
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ReadOnly: cc.HostConfig.ReadonlyRootfs,
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ReadOnlyTmpFS: true, // podman default
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Rm: cc.HostConfig.AutoRemove,
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SecurityOpt: cc.HostConfig.SecurityOpt,
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StopSignal: cc.Config.StopSignal,
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StorageOpt: stringMaptoArray(cc.HostConfig.StorageOpt),
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Sysctl: stringMaptoArray(cc.HostConfig.Sysctls),
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Systemd: "true", // podman default
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TmpFS: stringMaptoArray(cc.HostConfig.Tmpfs),
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TTY: cc.Config.Tty,
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User: cc.Config.User,
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UserNS: string(cc.HostConfig.UsernsMode),
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UTS: string(cc.HostConfig.UTSMode),
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Mount: mounts,
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VolumesFrom: cc.HostConfig.VolumesFrom,
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Workdir: cc.Config.WorkingDir,
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Net: &netInfo,
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}
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if !rootless.IsRootless() {
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var ulimits []string
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if len(cc.HostConfig.Ulimits) > 0 {
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for _, ul := range cc.HostConfig.Ulimits {
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ulimits = append(ulimits, ul.String())
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}
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cliOpts.Ulimit = ulimits
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}
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}
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// volumes
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volDestinations := make(map[string]bool)
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for _, vol := range cc.HostConfig.Binds {
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cliOpts.Volume = append(cliOpts.Volume, vol)
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// Extract the destination so we don't add duplicate mounts in
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// the volumes phase.
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splitVol := strings.SplitN(vol, ":", 3)
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switch len(splitVol) {
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case 1:
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volDestinations[vol] = true
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default:
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volDestinations[splitVol[1]] = true
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}
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}
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// Anonymous volumes are added differently from other volumes, in their
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// own special field, for reasons known only to Docker. Still use the
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// format of `-v` so we can just append them in there.
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// Unfortunately, these may be duplicates of existing mounts in Binds.
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// So... We need to catch that.
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for vol := range cc.Volumes {
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if _, ok := volDestinations[filepath.Clean(vol)]; ok {
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continue
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}
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cliOpts.Volume = append(cliOpts.Volume, vol)
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}
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if len(cc.HostConfig.BlkioWeightDevice) > 0 {
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devices := make([]string, 0, len(cc.HostConfig.BlkioWeightDevice))
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for _, d := range cc.HostConfig.BlkioWeightDevice {
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devices = append(devices, d.String())
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}
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cliOpts.BlkIOWeightDevice = devices
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}
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if cc.HostConfig.BlkioWeight > 0 {
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cliOpts.BlkIOWeight = strconv.Itoa(int(cc.HostConfig.BlkioWeight))
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}
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if cc.HostConfig.Memory > 0 {
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cliOpts.Memory = strconv.Itoa(int(cc.HostConfig.Memory))
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}
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if cc.HostConfig.MemoryReservation > 0 {
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cliOpts.MemoryReservation = strconv.Itoa(int(cc.HostConfig.MemoryReservation))
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}
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cgroupsv2, err := cgroups.IsCgroup2UnifiedMode()
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if err != nil {
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return nil, nil, err
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}
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if cc.HostConfig.MemorySwap > 0 && (!rootless.IsRootless() || (rootless.IsRootless() && cgroupsv2)) {
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cliOpts.MemorySwap = strconv.Itoa(int(cc.HostConfig.MemorySwap))
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}
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if cc.Config.StopTimeout != nil {
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cliOpts.StopTimeout = uint(*cc.Config.StopTimeout)
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}
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if cc.HostConfig.ShmSize > 0 {
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cliOpts.ShmSize = strconv.Itoa(int(cc.HostConfig.ShmSize))
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}
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if cc.HostConfig.KernelMemory > 0 {
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cliOpts.KernelMemory = strconv.Itoa(int(cc.HostConfig.KernelMemory))
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}
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if len(cc.HostConfig.RestartPolicy.Name) > 0 {
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policy := cc.HostConfig.RestartPolicy.Name
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// only add restart count on failure
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if cc.HostConfig.RestartPolicy.IsOnFailure() {
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policy += fmt.Sprintf(":%d", cc.HostConfig.RestartPolicy.MaximumRetryCount)
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}
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cliOpts.Restart = policy
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}
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if cc.HostConfig.MemorySwappiness != nil && (!rootless.IsRootless() || rootless.IsRootless() && cgroupsv2 && cgroupsManager == "systemd") {
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cliOpts.MemorySwappiness = *cc.HostConfig.MemorySwappiness
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} else {
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cliOpts.MemorySwappiness = -1
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}
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if cc.HostConfig.OomKillDisable != nil {
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cliOpts.OOMKillDisable = *cc.HostConfig.OomKillDisable
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}
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if cc.Config.Healthcheck != nil {
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cliOpts.HealthCmd = strings.Join(cc.Config.Healthcheck.Test, " ")
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cliOpts.HealthInterval = cc.Config.Healthcheck.Interval.String()
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cliOpts.HealthRetries = uint(cc.Config.Healthcheck.Retries)
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cliOpts.HealthStartPeriod = cc.Config.Healthcheck.StartPeriod.String()
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cliOpts.HealthTimeout = cc.Config.Healthcheck.Timeout.String()
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}
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// specgen assumes the image name is arg[0]
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cmd := []string{cc.Config.Image}
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cmd = append(cmd, cc.Config.Cmd...)
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return &cliOpts, cmd, nil
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}
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func ulimits() []string {
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if !registry.IsRemote() {
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return containerConfig.Ulimits()
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}
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return nil
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}
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func cgroupConfig() string {
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if !registry.IsRemote() {
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return containerConfig.Cgroups()
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}
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return ""
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}
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func devices() []string {
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if !registry.IsRemote() {
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return containerConfig.Devices()
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}
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return nil
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}
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func env() []string {
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if !registry.IsRemote() {
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return containerConfig.Env()
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}
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return nil
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}
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func initPath() string {
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if !registry.IsRemote() {
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return containerConfig.InitPath()
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}
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return ""
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}
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func pidsLimit() int64 {
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|
if !registry.IsRemote() {
|
|
return containerConfig.PidsLimit()
|
|
}
|
|
return -1
|
|
}
|
|
|
|
func policy() string {
|
|
if !registry.IsRemote() {
|
|
return containerConfig.Engine.PullPolicy
|
|
}
|
|
return ""
|
|
}
|
|
|
|
func shmSize() string {
|
|
if !registry.IsRemote() {
|
|
return containerConfig.ShmSize()
|
|
}
|
|
return ""
|
|
}
|
|
|
|
func volumes() []string {
|
|
if !registry.IsRemote() {
|
|
return containerConfig.Volumes()
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func logDriver() string {
|
|
if !registry.IsRemote() {
|
|
return containerConfig.Containers.LogDriver
|
|
}
|
|
return ""
|
|
}
|