mirror of
https://github.com/containers/podman.git
synced 2025-05-21 00:56:36 +08:00
364 lines
10 KiB
Go
364 lines
10 KiB
Go
package main
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import (
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"encoding/json"
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"io/ioutil"
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"strings"
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"github.com/docker/docker/daemon/caps"
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"github.com/docker/docker/pkg/mount"
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spec "github.com/opencontainers/runtime-spec/specs-go"
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"github.com/opencontainers/runtime-tools/generate"
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"github.com/pkg/errors"
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"github.com/projectatomic/libpod/libpod"
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ann "github.com/projectatomic/libpod/pkg/annotations"
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"github.com/sirupsen/logrus"
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"golang.org/x/sys/unix"
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)
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func setupCapabilities(config *createConfig, configSpec *spec.Spec) error {
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var err error
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var caplist []string
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if config.privileged {
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caplist = caps.GetAllCapabilities()
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} else {
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caplist, err = caps.TweakCapabilities(configSpec.Process.Capabilities.Bounding, config.capAdd, config.capDrop)
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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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configSpec.Process.Capabilities.Bounding = caplist
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configSpec.Process.Capabilities.Permitted = caplist
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configSpec.Process.Capabilities.Inheritable = caplist
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configSpec.Process.Capabilities.Effective = caplist
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return nil
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}
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// Parses information needed to create a container into an OCI runtime spec
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func createConfigToOCISpec(config *createConfig) (*spec.Spec, error) {
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g := generate.New()
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g.SetProcessCwd(config.workDir)
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g.SetProcessArgs(config.command)
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g.SetProcessTerminal(config.tty)
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// User and Group must go together
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g.SetProcessUID(config.user)
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g.SetProcessGID(config.group)
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for _, gid := range config.groupAdd {
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g.AddProcessAdditionalGid(gid)
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}
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for key, val := range config.GetAnnotations() {
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g.AddAnnotation(key, val)
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}
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g.SetRootReadonly(config.readOnlyRootfs)
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g.SetHostname(config.hostname)
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for _, sysctl := range config.sysctl {
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s := strings.SplitN(sysctl, "=", 2)
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g.AddLinuxSysctl(s[0], s[1])
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}
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// RESOURCES - MEMORY
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if config.resources.memory != 0 {
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g.SetLinuxResourcesMemoryLimit(config.resources.memory)
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}
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if config.resources.memoryReservation != 0 {
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g.SetLinuxResourcesMemoryReservation(config.resources.memoryReservation)
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}
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if config.resources.memorySwap != 0 {
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g.SetLinuxResourcesMemorySwap(config.resources.memorySwap)
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}
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if config.resources.kernelMemory != 0 {
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g.SetLinuxResourcesMemoryKernel(config.resources.kernelMemory)
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}
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if config.resources.memorySwapiness != 0 {
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g.SetLinuxResourcesMemorySwappiness(config.resources.memorySwapiness)
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}
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g.SetLinuxResourcesMemoryDisableOOMKiller(config.resources.disableOomKiller)
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// RESOURCES - CPU
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if config.resources.cpuShares != 0 {
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g.SetLinuxResourcesCPUShares(config.resources.cpuShares)
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}
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if config.resources.cpuQuota != 0 {
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g.SetLinuxResourcesCPUQuota(config.resources.cpuQuota)
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}
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if config.resources.cpuPeriod != 0 {
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g.SetLinuxResourcesCPUPeriod(config.resources.cpuPeriod)
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}
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if config.resources.cpuRtRuntime != 0 {
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g.SetLinuxResourcesCPURealtimeRuntime(config.resources.cpuRtRuntime)
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}
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if config.resources.cpuRtPeriod != 0 {
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g.SetLinuxResourcesCPURealtimePeriod(config.resources.cpuRtPeriod)
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}
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if config.resources.cpus != "" {
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g.SetLinuxResourcesCPUCpus(config.resources.cpus)
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}
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if config.resources.cpusetMems != "" {
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g.SetLinuxResourcesCPUMems(config.resources.cpusetMems)
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}
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// SECURITY OPTS
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g.SetProcessNoNewPrivileges(config.noNewPrivileges)
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g.SetProcessApparmorProfile(config.apparmorProfile)
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g.SetProcessSelinuxLabel(config.processLabel)
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g.SetLinuxMountLabel(config.mountLabel)
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// RESOURCES - PIDS
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if config.resources.pidsLimit != 0 {
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g.SetLinuxResourcesPidsLimit(config.resources.pidsLimit)
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}
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for _, i := range config.tmpfs {
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options := []string{"rw", "noexec", "nosuid", "nodev", "size=65536k"}
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spliti := strings.SplitN(i, ":", 2)
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if len(spliti) > 1 {
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if _, _, err := mount.ParseTmpfsOptions(spliti[1]); err != nil {
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return nil, err
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}
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options = strings.Split(spliti[1], ",")
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}
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// Default options if nothing passed
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g.AddTmpfsMount(spliti[0], options)
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}
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configSpec := g.Spec()
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if config.seccompProfilePath != "" && config.seccompProfilePath != "unconfined" {
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seccompProfile, err := ioutil.ReadFile(config.seccompProfilePath)
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if err != nil {
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return nil, errors.Wrapf(err, "opening seccomp profile (%s) failed", config.seccompProfilePath)
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}
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var seccompConfig spec.LinuxSeccomp
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if err := json.Unmarshal(seccompProfile, &seccompConfig); err != nil {
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return nil, errors.Wrapf(err, "decoding seccomp profile (%s) failed", config.seccompProfilePath)
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}
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configSpec.Linux.Seccomp = &seccompConfig
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}
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configSpec.Process.Env = config.env
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// BIND MOUNTS
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configSpec.Mounts = append(configSpec.Mounts, config.GetVolumeMounts()...)
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// HANDLE CAPABILITIES
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if err := setupCapabilities(config, configSpec); err != nil {
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return nil, err
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}
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/*
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// Rlimits []PosixRlimit // Where does this come from
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// Type string
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// Hard uint64
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// Limit uint64
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OOMScoreAdj: &config.resources.oomScoreAdj,
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},
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Hooks: &configSpec.Hooks{},
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//Annotations
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Resources: &configSpec.LinuxResources{
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Devices: config.GetDefaultDevices(),
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BlockIO: &blkio,
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//HugepageLimits:
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Network: &configSpec.LinuxNetwork{
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// ClassID *uint32
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// Priorites []LinuxInterfacePriority
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},
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},
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//CgroupsPath:
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//Namespaces: []LinuxNamespace
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//Devices
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// DefaultAction:
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// Architectures
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// Syscalls:
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},
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// RootfsPropagation
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// MaskedPaths
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// ReadonlyPaths:
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// IntelRdt
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},
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}
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*/
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return configSpec, nil
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}
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func (c *createConfig) CreateBlockIO() (spec.LinuxBlockIO, error) {
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bio := spec.LinuxBlockIO{}
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bio.Weight = &c.resources.blkioWeight
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if len(c.resources.blkioDevice) > 0 {
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var lwds []spec.LinuxWeightDevice
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for _, i := range c.resources.blkioDevice {
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wd, err := validateweightDevice(i)
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if err != nil {
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return bio, errors.Wrapf(err, "invalid values for blkio-weight-device")
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}
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wdStat := getStatFromPath(wd.path)
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lwd := spec.LinuxWeightDevice{
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Weight: &wd.weight,
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}
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lwd.Major = int64(unix.Major(wdStat.Rdev))
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lwd.Minor = int64(unix.Minor(wdStat.Rdev))
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lwds = append(lwds, lwd)
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}
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}
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if len(c.resources.deviceReadBps) > 0 {
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readBps, err := makeThrottleArray(c.resources.deviceReadBps)
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if err != nil {
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return bio, err
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}
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bio.ThrottleReadBpsDevice = readBps
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}
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if len(c.resources.deviceWriteBps) > 0 {
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writeBpds, err := makeThrottleArray(c.resources.deviceWriteBps)
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if err != nil {
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return bio, err
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}
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bio.ThrottleWriteBpsDevice = writeBpds
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}
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if len(c.resources.deviceReadIops) > 0 {
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readIops, err := makeThrottleArray(c.resources.deviceReadIops)
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if err != nil {
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return bio, err
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}
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bio.ThrottleReadIOPSDevice = readIops
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}
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if len(c.resources.deviceWriteIops) > 0 {
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writeIops, err := makeThrottleArray(c.resources.deviceWriteIops)
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if err != nil {
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return bio, err
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}
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bio.ThrottleWriteIOPSDevice = writeIops
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}
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return bio, nil
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}
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// GetAnnotations returns the all the annotations for the container
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func (c *createConfig) GetAnnotations() map[string]string {
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a := getDefaultAnnotations()
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// TODO
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// Which annotations do we want added by default
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if c.tty {
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a["io.kubernetes.cri-o.TTY"] = "true"
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}
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return a
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}
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func getDefaultAnnotations() map[string]string {
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var annotations map[string]string
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annotations = make(map[string]string)
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annotations[ann.Annotations] = ""
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annotations[ann.ContainerID] = ""
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annotations[ann.ContainerName] = ""
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annotations[ann.ContainerType] = ""
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annotations[ann.Created] = ""
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annotations[ann.HostName] = ""
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annotations[ann.IP] = ""
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annotations[ann.Image] = ""
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annotations[ann.ImageName] = ""
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annotations[ann.ImageRef] = ""
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annotations[ann.KubeName] = ""
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annotations[ann.Labels] = ""
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annotations[ann.LogPath] = ""
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annotations[ann.Metadata] = ""
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annotations[ann.Name] = ""
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annotations[ann.PrivilegedRuntime] = ""
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annotations[ann.ResolvPath] = ""
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annotations[ann.HostnamePath] = ""
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annotations[ann.SandboxID] = ""
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annotations[ann.SandboxName] = ""
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annotations[ann.ShmPath] = ""
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annotations[ann.MountPoint] = ""
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annotations[ann.TrustedSandbox] = ""
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annotations[ann.TTY] = "false"
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annotations[ann.Stdin] = ""
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annotations[ann.StdinOnce] = ""
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annotations[ann.Volumes] = ""
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return annotations
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}
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//GetVolumeMounts takes user provided input for bind mounts and creates Mount structs
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func (c *createConfig) GetVolumeMounts() []spec.Mount {
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var m []spec.Mount
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var options []string
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for _, i := range c.volumes {
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// We need to handle SELinux options better here, specifically :Z
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spliti := strings.Split(i, ":")
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if len(spliti) > 2 {
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options = strings.Split(spliti[2], ",")
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}
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// always add rbind bc mount ignores the bind filesystem when mounting
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options = append(options, "rbind")
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m = append(m, spec.Mount{
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Destination: spliti[1],
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Type: string(TypeBind),
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Source: spliti[0],
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Options: options,
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})
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}
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return m
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}
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//GetTmpfsMounts takes user provided input for tmpfs mounts and creates Mount structs
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func (c *createConfig) GetTmpfsMounts() []spec.Mount {
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var m []spec.Mount
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for _, i := range c.tmpfs {
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// Default options if nothing passed
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options := []string{"rw", "noexec", "nosuid", "nodev", "size=65536k"}
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spliti := strings.Split(i, ":")
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destPath := spliti[0]
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if len(spliti) > 1 {
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options = strings.Split(spliti[1], ",")
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}
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m = append(m, spec.Mount{
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Destination: destPath,
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Type: string(TypeTmpfs),
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Options: options,
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Source: string(TypeTmpfs),
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})
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}
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return m
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}
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func (c *createConfig) GetContainerCreateOptions() ([]libpod.CtrCreateOption, error) {
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var options []libpod.CtrCreateOption
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// Uncomment after talking to mheon about unimplemented funcs
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// options = append(options, libpod.WithLabels(c.labels))
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if c.interactive {
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options = append(options, libpod.WithStdin())
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}
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if c.name != "" {
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logrus.Debug("appending name %s", c.name)
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options = append(options, libpod.WithName(c.name))
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}
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return options, nil
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}
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func getStatFromPath(path string) unix.Stat_t {
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s := unix.Stat_t{}
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_ = unix.Stat(path, &s)
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return s
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}
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func makeThrottleArray(throttleInput []string) ([]spec.LinuxThrottleDevice, error) {
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var ltds []spec.LinuxThrottleDevice
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for _, i := range throttleInput {
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t, err := validateBpsDevice(i)
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if err != nil {
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return []spec.LinuxThrottleDevice{}, err
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}
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ltd := spec.LinuxThrottleDevice{}
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ltd.Rate = t.rate
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ltdStat := getStatFromPath(t.path)
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ltd.Major = int64(unix.Major(ltdStat.Rdev))
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ltd.Minor = int64(unix.Major(ltdStat.Rdev))
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ltds = append(ltds, ltd)
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}
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return ltds, nil
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}
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