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-rw-r--r--pkg/spec/createconfig.go508
1 files changed, 508 insertions, 0 deletions
diff --git a/pkg/spec/createconfig.go b/pkg/spec/createconfig.go
new file mode 100644
index 000000000..de6e0f593
--- /dev/null
+++ b/pkg/spec/createconfig.go
@@ -0,0 +1,508 @@
+package createconfig
+
+import (
+ "os"
+ "strconv"
+ "strings"
+ "syscall"
+
+ "github.com/containers/storage"
+ "github.com/cri-o/ocicni/pkg/ocicni"
+ "github.com/docker/docker/api/types/container"
+ "github.com/docker/go-connections/nat"
+ "github.com/opencontainers/runc/libcontainer/devices"
+ spec "github.com/opencontainers/runtime-spec/specs-go"
+ "github.com/opencontainers/runtime-tools/generate"
+ "github.com/opencontainers/selinux/go-selinux/label"
+ "github.com/pkg/errors"
+ "github.com/projectatomic/libpod/libpod"
+ ann "github.com/projectatomic/libpod/pkg/annotations"
+ "github.com/sirupsen/logrus"
+ "golang.org/x/sys/unix"
+)
+
+type mountType string
+
+// Type constants
+const (
+ bps = iota
+ iops
+ // TypeBind is the type for mounting host dir
+ TypeBind mountType = "bind"
+ // TypeVolume is the type for remote storage volumes
+ // TypeVolume mountType = "volume" // re-enable upon use
+ // TypeTmpfs is the type for mounting tmpfs
+ TypeTmpfs mountType = "tmpfs"
+)
+
+// CreateResourceConfig represents resource elements in CreateConfig
+// structures
+type CreateResourceConfig struct {
+ BlkioWeight uint16 // blkio-weight
+ BlkioWeightDevice []string // blkio-weight-device
+ CPUPeriod uint64 // cpu-period
+ CPUQuota int64 // cpu-quota
+ CPURtPeriod uint64 // cpu-rt-period
+ CPURtRuntime int64 // cpu-rt-runtime
+ CPUShares uint64 // cpu-shares
+ CPUs float64 // cpus
+ CPUsetCPUs string
+ CPUsetMems string // cpuset-mems
+ DeviceReadBps []string // device-read-bps
+ DeviceReadIOps []string // device-read-iops
+ DeviceWriteBps []string // device-write-bps
+ DeviceWriteIOps []string // device-write-iops
+ DisableOomKiller bool // oom-kill-disable
+ KernelMemory int64 // kernel-memory
+ Memory int64 //memory
+ MemoryReservation int64 // memory-reservation
+ MemorySwap int64 //memory-swap
+ MemorySwappiness int // memory-swappiness
+ OomScoreAdj int //oom-score-adj
+ PidsLimit int64 // pids-limit
+ ShmSize int64
+ Ulimit []string //ulimit
+}
+
+// CreateConfig is a pre OCI spec structure. It represents user input from varlink or the CLI
+type CreateConfig struct {
+ Runtime *libpod.Runtime
+ Args []string
+ CapAdd []string // cap-add
+ CapDrop []string // cap-drop
+ CidFile string
+ ConmonPidFile string
+ CgroupParent string // cgroup-parent
+ Command []string
+ Detach bool // detach
+ Devices []string // device
+ DNSOpt []string //dns-opt
+ DNSSearch []string //dns-search
+ DNSServers []string //dns
+ Entrypoint []string //entrypoint
+ Env map[string]string //env
+ ExposedPorts map[nat.Port]struct{}
+ GroupAdd []string // group-add
+ HostAdd []string //add-host
+ Hostname string //hostname
+ Image string
+ ImageID string
+ BuiltinImgVolumes map[string]struct{} // volumes defined in the image config
+ IDMappings *storage.IDMappingOptions
+ ImageVolumeType string // how to handle the image volume, either bind, tmpfs, or ignore
+ Interactive bool //interactive
+ IpcMode container.IpcMode //ipc
+ IP6Address string //ipv6
+ IPAddress string //ip
+ Labels map[string]string //label
+ LinkLocalIP []string // link-local-ip
+ LogDriver string // log-driver
+ LogDriverOpt []string // log-opt
+ MacAddress string //mac-address
+ Name string //name
+ NetMode container.NetworkMode //net
+ Network string //network
+ NetworkAlias []string //network-alias
+ PidMode container.PidMode //pid
+ Pod string //pod
+ PortBindings nat.PortMap
+ Privileged bool //privileged
+ Publish []string //publish
+ PublishAll bool //publish-all
+ Quiet bool //quiet
+ ReadOnlyRootfs bool //read-only
+ Resources CreateResourceConfig
+ Rm bool //rm
+ ShmDir string
+ StopSignal syscall.Signal // stop-signal
+ StopTimeout uint // stop-timeout
+ Sysctl map[string]string //sysctl
+ Tmpfs []string // tmpfs
+ Tty bool //tty
+ UsernsMode container.UsernsMode //userns
+ User string //user
+ UtsMode container.UTSMode //uts
+ Volumes []string //volume
+ WorkDir string //workdir
+ MountLabel string //SecurityOpts
+ ProcessLabel string //SecurityOpts
+ NoNewPrivs bool //SecurityOpts
+ ApparmorProfile string //SecurityOpts
+ SeccompProfilePath string //SecurityOpts
+ SecurityOpts []string
+}
+
+func u32Ptr(i int64) *uint32 { u := uint32(i); return &u }
+func fmPtr(i int64) *os.FileMode { fm := os.FileMode(i); return &fm }
+
+// CreateBlockIO returns a LinuxBlockIO struct from a CreateConfig
+func (c *CreateConfig) CreateBlockIO() (*spec.LinuxBlockIO, error) {
+ bio := &spec.LinuxBlockIO{}
+ bio.Weight = &c.Resources.BlkioWeight
+ if len(c.Resources.BlkioWeightDevice) > 0 {
+ var lwds []spec.LinuxWeightDevice
+ for _, i := range c.Resources.BlkioWeightDevice {
+ wd, err := validateweightDevice(i)
+ if err != nil {
+ return bio, errors.Wrapf(err, "invalid values for blkio-weight-device")
+ }
+ wdStat, err := getStatFromPath(wd.path)
+ if err != nil {
+ return bio, errors.Wrapf(err, "error getting stat from path %q", wd.path)
+ }
+ lwd := spec.LinuxWeightDevice{
+ Weight: &wd.weight,
+ }
+ lwd.Major = int64(unix.Major(wdStat.Rdev))
+ lwd.Minor = int64(unix.Minor(wdStat.Rdev))
+ lwds = append(lwds, lwd)
+ }
+ bio.WeightDevice = lwds
+ }
+ if len(c.Resources.DeviceReadBps) > 0 {
+ readBps, err := makeThrottleArray(c.Resources.DeviceReadBps, bps)
+ if err != nil {
+ return bio, err
+ }
+ bio.ThrottleReadBpsDevice = readBps
+ }
+ if len(c.Resources.DeviceWriteBps) > 0 {
+ writeBpds, err := makeThrottleArray(c.Resources.DeviceWriteBps, bps)
+ if err != nil {
+ return bio, err
+ }
+ bio.ThrottleWriteBpsDevice = writeBpds
+ }
+ if len(c.Resources.DeviceReadIOps) > 0 {
+ readIOps, err := makeThrottleArray(c.Resources.DeviceReadIOps, iops)
+ if err != nil {
+ return bio, err
+ }
+ bio.ThrottleReadIOPSDevice = readIOps
+ }
+ if len(c.Resources.DeviceWriteIOps) > 0 {
+ writeIOps, err := makeThrottleArray(c.Resources.DeviceWriteIOps, iops)
+ if err != nil {
+ return bio, err
+ }
+ bio.ThrottleWriteIOPSDevice = writeIOps
+ }
+ return bio, nil
+}
+
+func makeThrottleArray(throttleInput []string, rateType int) ([]spec.LinuxThrottleDevice, error) {
+ var (
+ ltds []spec.LinuxThrottleDevice
+ t *throttleDevice
+ err error
+ )
+ for _, i := range throttleInput {
+ if rateType == bps {
+ t, err = validateBpsDevice(i)
+ } else {
+ t, err = validateIOpsDevice(i)
+ }
+ if err != nil {
+ return []spec.LinuxThrottleDevice{}, err
+ }
+ ltdStat, err := getStatFromPath(t.path)
+ if err != nil {
+ return ltds, errors.Wrapf(err, "error getting stat from path %q", t.path)
+ }
+ ltd := spec.LinuxThrottleDevice{
+ Rate: t.rate,
+ }
+ ltd.Major = int64(unix.Major(ltdStat.Rdev))
+ ltd.Minor = int64(unix.Minor(ltdStat.Rdev))
+ ltds = append(ltds, ltd)
+ }
+ return ltds, nil
+}
+
+// GetAnnotations returns the all the annotations for the container
+func (c *CreateConfig) GetAnnotations() map[string]string {
+ a := getDefaultAnnotations()
+ // TODO - Which annotations do we want added by default
+ // TODO - This should be added to the DB long term
+ if c.Tty {
+ a["io.kubernetes.cri-o.TTY"] = "true"
+ }
+ return a
+}
+
+func getDefaultAnnotations() map[string]string {
+ var annotations map[string]string
+ annotations = make(map[string]string)
+ annotations[ann.Annotations] = ""
+ annotations[ann.ContainerID] = ""
+ annotations[ann.ContainerName] = ""
+ annotations[ann.ContainerType] = "sandbox"
+ annotations[ann.Created] = ""
+ annotations[ann.HostName] = ""
+ annotations[ann.IP] = ""
+ annotations[ann.Image] = ""
+ annotations[ann.ImageName] = ""
+ annotations[ann.ImageRef] = ""
+ annotations[ann.KubeName] = ""
+ annotations[ann.Labels] = ""
+ annotations[ann.LogPath] = ""
+ annotations[ann.Metadata] = ""
+ annotations[ann.Name] = ""
+ annotations[ann.PrivilegedRuntime] = ""
+ annotations[ann.ResolvPath] = ""
+ annotations[ann.HostnamePath] = ""
+ annotations[ann.SandboxID] = ""
+ annotations[ann.SandboxName] = ""
+ annotations[ann.ShmPath] = ""
+ annotations[ann.MountPoint] = ""
+ annotations[ann.TrustedSandbox] = ""
+ annotations[ann.TTY] = "false"
+ annotations[ann.Stdin] = ""
+ annotations[ann.StdinOnce] = ""
+ annotations[ann.Volumes] = ""
+
+ return annotations
+}
+
+//GetVolumeMounts takes user provided input for bind mounts and creates Mount structs
+func (c *CreateConfig) GetVolumeMounts(specMounts []spec.Mount) ([]spec.Mount, error) {
+ var m []spec.Mount
+ var options []string
+ for _, i := range c.Volumes {
+ // We need to handle SELinux options better here, specifically :Z
+ spliti := strings.Split(i, ":")
+ if len(spliti) > 2 {
+ options = strings.Split(spliti[2], ",")
+ }
+ if libpod.MountExists(specMounts, spliti[1]) {
+ continue
+ }
+ options = append(options, "rbind")
+ var foundrw, foundro, foundz, foundZ bool
+ var rootProp string
+ for _, opt := range options {
+ switch opt {
+ case "rw":
+ foundrw = true
+ case "ro":
+ foundro = true
+ case "z":
+ foundz = true
+ case "Z":
+ foundZ = true
+ case "private", "rprivate", "slave", "rslave", "shared", "rshared":
+ rootProp = opt
+ }
+ }
+ if !foundrw && !foundro {
+ options = append(options, "rw")
+ }
+ if foundz {
+ if err := label.Relabel(spliti[0], c.MountLabel, true); err != nil {
+ return nil, errors.Wrapf(err, "relabel failed %q", spliti[0])
+ }
+ }
+ if foundZ {
+ if err := label.Relabel(spliti[0], c.MountLabel, false); err != nil {
+ return nil, errors.Wrapf(err, "relabel failed %q", spliti[0])
+ }
+ }
+ if rootProp == "" {
+ options = append(options, "private")
+ }
+
+ m = append(m, spec.Mount{
+ Destination: spliti[1],
+ Type: string(TypeBind),
+ Source: spliti[0],
+ Options: options,
+ })
+ }
+
+ // volumes from image config
+ if c.ImageVolumeType != "tmpfs" {
+ return m, nil
+ }
+ for vol := range c.BuiltinImgVolumes {
+ if libpod.MountExists(specMounts, vol) {
+ continue
+ }
+ mount := spec.Mount{
+ Destination: vol,
+ Type: string(TypeTmpfs),
+ Source: string(TypeTmpfs),
+ Options: []string{"rw", "noexec", "nosuid", "nodev", "tmpcopyup"},
+ }
+ m = append(m, mount)
+ }
+ return m, nil
+}
+
+//GetTmpfsMounts takes user provided input for Tmpfs mounts and creates Mount structs
+func (c *CreateConfig) GetTmpfsMounts() []spec.Mount {
+ var m []spec.Mount
+ for _, i := range c.Tmpfs {
+ // Default options if nothing passed
+ options := []string{"rw", "noexec", "nosuid", "nodev", "size=65536k"}
+ spliti := strings.Split(i, ":")
+ destPath := spliti[0]
+ if len(spliti) > 1 {
+ options = strings.Split(spliti[1], ",")
+ }
+ m = append(m, spec.Mount{
+ Destination: destPath,
+ Type: string(TypeTmpfs),
+ Options: options,
+ Source: string(TypeTmpfs),
+ })
+ }
+ return m
+}
+
+// GetContainerCreateOptions takes a CreateConfig and returns a slice of CtrCreateOptions
+func (c *CreateConfig) GetContainerCreateOptions() ([]libpod.CtrCreateOption, error) {
+ var options []libpod.CtrCreateOption
+ var portBindings []ocicni.PortMapping
+ var err error
+
+ // Uncomment after talking to mheon about unimplemented funcs
+ // options = append(options, libpod.WithLabels(c.labels))
+
+ if c.Interactive {
+ options = append(options, libpod.WithStdin())
+ }
+ if c.Name != "" {
+ logrus.Debugf("appending name %s", c.Name)
+ options = append(options, libpod.WithName(c.Name))
+ }
+
+ if len(c.PortBindings) > 0 {
+ portBindings, err = c.CreatePortBindings()
+ if err != nil {
+ return nil, errors.Wrapf(err, "unable to create port bindings")
+ }
+ }
+
+ if len(c.Volumes) != 0 {
+ // Volumes consist of multiple, comma-delineated fields
+ // The image spec only includes one part of that, so drop the
+ // others, if they are included
+ volumes := make([]string, 0, len(c.Volumes))
+ for _, vol := range c.Volumes {
+ volumes = append(volumes, strings.SplitN(vol, ":", 2)[0])
+ }
+
+ options = append(options, libpod.WithUserVolumes(volumes))
+ }
+
+ if len(c.Command) != 0 {
+ options = append(options, libpod.WithCommand(c.Command))
+ }
+
+ // Add entrypoint unconditionally
+ // If it's empty it's because it was explicitly set to "" or the image
+ // does not have one
+ options = append(options, libpod.WithEntrypoint(c.Entrypoint))
+
+ if c.NetMode.IsContainer() {
+ connectedCtr, err := c.Runtime.LookupContainer(c.NetMode.ConnectedContainer())
+ if err != nil {
+ return nil, errors.Wrapf(err, "container %q not found", c.NetMode.ConnectedContainer())
+ }
+ options = append(options, libpod.WithNetNSFrom(connectedCtr))
+ } else if !c.NetMode.IsHost() && !c.NetMode.IsNone() {
+ postConfigureNetNS := (len(c.IDMappings.UIDMap) > 0 || len(c.IDMappings.GIDMap) > 0) && !c.UsernsMode.IsHost()
+ options = append(options, libpod.WithNetNS([]ocicni.PortMapping{}, postConfigureNetNS))
+ options = append(options, libpod.WithNetNS(portBindings, postConfigureNetNS))
+ }
+
+ if c.PidMode.IsContainer() {
+ connectedCtr, err := c.Runtime.LookupContainer(c.PidMode.Container())
+ if err != nil {
+ return nil, errors.Wrapf(err, "container %q not found", c.PidMode.Container())
+ }
+
+ options = append(options, libpod.WithPIDNSFrom(connectedCtr))
+ }
+ if c.IpcMode.IsContainer() {
+ connectedCtr, err := c.Runtime.LookupContainer(c.IpcMode.Container())
+ if err != nil {
+ return nil, errors.Wrapf(err, "container %q not found", c.IpcMode.Container())
+ }
+
+ options = append(options, libpod.WithIPCNSFrom(connectedCtr))
+ }
+
+ options = append(options, libpod.WithStopSignal(c.StopSignal))
+ options = append(options, libpod.WithStopTimeout(c.StopTimeout))
+ if len(c.DNSSearch) > 0 {
+ options = append(options, libpod.WithDNSSearch(c.DNSSearch))
+ }
+ if len(c.DNSServers) > 0 {
+ options = append(options, libpod.WithDNS(c.DNSServers))
+ }
+ if len(c.DNSOpt) > 0 {
+ options = append(options, libpod.WithDNSOption(c.DNSOpt))
+ }
+ if len(c.HostAdd) > 0 {
+ options = append(options, libpod.WithHosts(c.HostAdd))
+ }
+ logPath := getLoggingPath(c.LogDriverOpt)
+ if logPath != "" {
+ options = append(options, libpod.WithLogPath(logPath))
+ }
+
+ options = append(options, libpod.WithPrivileged(c.Privileged))
+ return options, nil
+}
+
+// CreatePortBindings iterates ports mappings and exposed ports into a format CNI understands
+func (c *CreateConfig) CreatePortBindings() ([]ocicni.PortMapping, error) {
+ var portBindings []ocicni.PortMapping
+ for containerPb, hostPb := range c.PortBindings {
+ var pm ocicni.PortMapping
+ pm.ContainerPort = int32(containerPb.Int())
+ for _, i := range hostPb {
+ var hostPort int
+ var err error
+ pm.HostIP = i.HostIP
+ if i.HostPort == "" {
+ hostPort = containerPb.Int()
+ } else {
+ hostPort, err = strconv.Atoi(i.HostPort)
+ if err != nil {
+ return nil, errors.Wrapf(err, "unable to convert host port to integer")
+ }
+ }
+
+ pm.HostPort = int32(hostPort)
+ // CNI requires us to make both udp and tcp structs
+ pm.Protocol = "udp"
+ portBindings = append(portBindings, pm)
+ pm.Protocol = "tcp"
+ portBindings = append(portBindings, pm)
+ }
+ }
+ return portBindings, nil
+}
+
+// AddPrivilegedDevices iterates through host devices and adds all
+// host devices to the spec
+func (c *CreateConfig) AddPrivilegedDevices(g *generate.Generator) error {
+ hostDevices, err := devices.HostDevices()
+ if err != nil {
+ return err
+ }
+ g.ClearLinuxDevices()
+ for _, d := range hostDevices {
+ g.AddDevice(Device(d))
+ }
+ g.AddLinuxResourcesDevice(true, "", nil, nil, "rwm")
+ return nil
+}
+
+func getStatFromPath(path string) (unix.Stat_t, error) {
+ s := unix.Stat_t{}
+ err := unix.Stat(path, &s)
+ return s, err
+}
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-11-16 20:28:04 +0000