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Merge pull request #480 from dnephin/remove-unnecessary-deps 

Remove 5k lines of unnecessary dependencies
This commit is contained in:
Tibor Vass 2017-08-29 10:37:43 -07:00 committed by GitHub
parent 6780c29d6e 8edd2dd3df
commit e6006219ab
60 changed files with 1 additions and 5321 deletions
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160
cli/command/container/opts_test.go
View File

@ -1,8 +1,6 @@
package container package container
import ( import (
"bytes"
"encoding/json"
"fmt" "fmt"
"io/ioutil" "io/ioutil"
"os" "os"
@ -14,7 +12,6 @@ import (
"github.com/docker/cli/internal/test/testutil" "github.com/docker/cli/internal/test/testutil"
"github.com/docker/docker/api/types/container" "github.com/docker/docker/api/types/container"
networktypes "github.com/docker/docker/api/types/network" networktypes "github.com/docker/docker/api/types/network"
"github.com/docker/docker/runconfig"
"github.com/docker/go-connections/nat" "github.com/docker/go-connections/nat"
"github.com/pkg/errors" "github.com/pkg/errors"
"github.com/spf13/pflag" "github.com/spf13/pflag"
@ -115,7 +112,7 @@ func TestParseRunWithInvalidArgs(t *testing.T) {
} }
// nolint: gocyclo // nolint: gocyclo
func TestParseRunVolumes(t *testing.T) { func TestParseWithVolumes(t *testing.T) {
// A single volume // A single volume
arr, tryit := setupPlatformVolume([]string{`/tmp`}, []string{`c:\tmp`}) arr, tryit := setupPlatformVolume([]string{`/tmp`}, []string{`c:\tmp`})
@ -584,161 +581,6 @@ func TestParseEntryPoint(t *testing.T) {
} }
} }
// This tests the cases for binds which are generated through
// DecodeContainerConfig rather than Parse()
// nolint: gocyclo
func TestDecodeContainerConfigVolumes(t *testing.T) {
// Root to root
bindsOrVols, _ := setupPlatformVolume([]string{`/:/`}, []string{os.Getenv("SystemDrive") + `\:c:\`})
if _, _, err := callDecodeContainerConfig(nil, bindsOrVols); err == nil {
t.Fatalf("binds %v should have failed", bindsOrVols)
}
if _, _, err := callDecodeContainerConfig(bindsOrVols, nil); err == nil {
t.Fatalf("volume %v should have failed", bindsOrVols)
}
// No destination path
bindsOrVols, _ = setupPlatformVolume([]string{`/tmp:`}, []string{os.Getenv("TEMP") + `\:`})
if _, _, err := callDecodeContainerConfig(nil, bindsOrVols); err == nil {
t.Fatalf("binds %v should have failed", bindsOrVols)
}
if _, _, err := callDecodeContainerConfig(bindsOrVols, nil); err == nil {
t.Fatalf("volume %v should have failed", bindsOrVols)
}
// // No destination path or mode
bindsOrVols, _ = setupPlatformVolume([]string{`/tmp::`}, []string{os.Getenv("TEMP") + `\::`})
if _, _, err := callDecodeContainerConfig(nil, bindsOrVols); err == nil {
t.Fatalf("binds %v should have failed", bindsOrVols)
}
if _, _, err := callDecodeContainerConfig(bindsOrVols, nil); err == nil {
t.Fatalf("volume %v should have failed", bindsOrVols)
}
// A whole lot of nothing
bindsOrVols = []string{`:`}
if _, _, err := callDecodeContainerConfig(nil, bindsOrVols); err == nil {
t.Fatalf("binds %v should have failed", bindsOrVols)
}
if _, _, err := callDecodeContainerConfig(bindsOrVols, nil); err == nil {
t.Fatalf("volume %v should have failed", bindsOrVols)
}
// A whole lot of nothing with no mode
bindsOrVols = []string{`::`}
if _, _, err := callDecodeContainerConfig(nil, bindsOrVols); err == nil {
t.Fatalf("binds %v should have failed", bindsOrVols)
}
if _, _, err := callDecodeContainerConfig(bindsOrVols, nil); err == nil {
t.Fatalf("volume %v should have failed", bindsOrVols)
}
// Too much including an invalid mode
wTmp := os.Getenv("TEMP")
bindsOrVols, _ = setupPlatformVolume([]string{`/tmp:/tmp:/tmp:/tmp`}, []string{wTmp + ":" + wTmp + ":" + wTmp + ":" + wTmp})
if _, _, err := callDecodeContainerConfig(nil, bindsOrVols); err == nil {
t.Fatalf("binds %v should have failed", bindsOrVols)
}
if _, _, err := callDecodeContainerConfig(bindsOrVols, nil); err == nil {
t.Fatalf("volume %v should have failed", bindsOrVols)
}
// Windows specific error tests
if runtime.GOOS == "windows" {
// Volume which does not include a drive letter
bindsOrVols = []string{`\tmp`}
if _, _, err := callDecodeContainerConfig(nil, bindsOrVols); err == nil {
t.Fatalf("binds %v should have failed", bindsOrVols)
}
if _, _, err := callDecodeContainerConfig(bindsOrVols, nil); err == nil {
t.Fatalf("volume %v should have failed", bindsOrVols)
}
// Root to C-Drive
bindsOrVols = []string{os.Getenv("SystemDrive") + `\:c:`}
if _, _, err := callDecodeContainerConfig(nil, bindsOrVols); err == nil {
t.Fatalf("binds %v should have failed", bindsOrVols)
}
if _, _, err := callDecodeContainerConfig(bindsOrVols, nil); err == nil {
t.Fatalf("volume %v should have failed", bindsOrVols)
}
// Container path that does not include a drive letter
bindsOrVols = []string{`c:\windows:\somewhere`}
if _, _, err := callDecodeContainerConfig(nil, bindsOrVols); err == nil {
t.Fatalf("binds %v should have failed", bindsOrVols)
}
if _, _, err := callDecodeContainerConfig(bindsOrVols, nil); err == nil {
t.Fatalf("volume %v should have failed", bindsOrVols)
}
}
// Linux-specific error tests
if runtime.GOOS != "windows" {
// Just root
bindsOrVols = []string{`/`}
if _, _, err := callDecodeContainerConfig(nil, bindsOrVols); err == nil {
t.Fatalf("binds %v should have failed", bindsOrVols)
}
if _, _, err := callDecodeContainerConfig(bindsOrVols, nil); err == nil {
t.Fatalf("volume %v should have failed", bindsOrVols)
}
// A single volume that looks like a bind mount passed in Volumes.
// This should be handled as a bind mount, not a volume.
vols := []string{`/foo:/bar`}
if config, hostConfig, err := callDecodeContainerConfig(vols, nil); err != nil {
t.Fatal("Volume /foo:/bar should have succeeded as a volume name")
} else if hostConfig.Binds != nil {
t.Fatalf("Error parsing volume flags, /foo:/bar should not mount-bind anything. Received %v", hostConfig.Binds)
} else if _, exists := config.Volumes[vols[0]]; !exists {
t.Fatalf("Error parsing volume flags, /foo:/bar is missing from volumes. Received %v", config.Volumes)
}
}
}
// callDecodeContainerConfig is a utility function used by TestDecodeContainerConfigVolumes
// to call DecodeContainerConfig. It effectively does what a client would
// do when calling the daemon by constructing a JSON stream of a
// ContainerConfigWrapper which is populated by the set of volume specs
// passed into it. It returns a config and a hostconfig which can be
// validated to ensure DecodeContainerConfig has manipulated the structures
// correctly.
func callDecodeContainerConfig(volumes []string, binds []string) (*container.Config, *container.HostConfig, error) {
var (
b []byte
err error
c *container.Config
h *container.HostConfig
)
w := runconfig.ContainerConfigWrapper{
Config: &container.Config{
Volumes: map[string]struct{}{},
},
HostConfig: &container.HostConfig{
NetworkMode: "none",
Binds: binds,
},
}
for _, v := range volumes {
w.Config.Volumes[v] = struct{}{}
}
if b, err = json.Marshal(w); err != nil {
return nil, nil, errors.Errorf("Error on marshal %s", err.Error())
}
c, h, _, err = runconfig.DecodeContainerConfig(bytes.NewReader(b))
if err != nil {
return nil, nil, errors.Errorf("Error parsing %s: %v", string(b), err)
}
if c == nil || h == nil {
return nil, nil, errors.Errorf("Empty config or hostconfig")
}
return c, h, err
}
func TestValidateDevice(t *testing.T) { func TestValidateDevice(t *testing.T) {
valid := []string{ valid := []string{
"/home", "/home",

1
vendor.conf
View File

@ -32,7 +32,6 @@ github.com/mitchellh/mapstructure f3009df150dadf309fdee4a54ed65c124afad715
github.com/opencontainers/go-digest a6d0ee40d4207ea02364bd3b9e8e77b9159ba1eb github.com/opencontainers/go-digest a6d0ee40d4207ea02364bd3b9e8e77b9159ba1eb
github.com/opencontainers/image-spec f03dbe35d449c54915d235f1a3cf8f585a24babe github.com/opencontainers/image-spec f03dbe35d449c54915d235f1a3cf8f585a24babe
github.com/opencontainers/runc 9c2d8d184e5da67c95d601382adf14862e4f2228 https://github.com/docker/runc.git github.com/opencontainers/runc 9c2d8d184e5da67c95d601382adf14862e4f2228 https://github.com/docker/runc.git
github.com/opencontainers/selinux v1.0.0-rc1
github.com/pkg/errors 839d9e913e063e28dfd0e6c7b7512793e0a48be9 github.com/pkg/errors 839d9e913e063e28dfd0e6c7b7512793e0a48be9
github.com/pmezard/go-difflib v1.0.0 github.com/pmezard/go-difflib v1.0.0
github.com/russross/blackfriday 1d6b8e9301e720b08a8938b8c25c018285885438 github.com/russross/blackfriday 1d6b8e9301e720b08a8938b8c25c018285885438

69
vendor/github.com/docker/docker/pkg/parsers/parsers.go generated vendored
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@ -1,69 +0,0 @@
// Package parsers provides helper functions to parse and validate different type
// of string. It can be hosts, unix addresses, tcp addresses, filters, kernel
// operating system versions.
package parsers
import (
"fmt"
"strconv"
"strings"
)
// ParseKeyValueOpt parses and validates the specified string as a key/value pair (key=value)
func ParseKeyValueOpt(opt string) (string, string, error) {
parts := strings.SplitN(opt, "=", 2)
if len(parts) != 2 {
return "", "", fmt.Errorf("Unable to parse key/value option: %s", opt)
}
return strings.TrimSpace(parts[0]), strings.TrimSpace(parts[1]), nil
}
// ParseUintList parses and validates the specified string as the value
// found in some cgroup file (e.g. `cpuset.cpus`, `cpuset.mems`), which could be
// one of the formats below. Note that duplicates are actually allowed in the
// input string. It returns a `map[int]bool` with available elements from `val`
// set to `true`.
// Supported formats:
// 7
// 1-6
// 0,3-4,7,8-10
// 0-0,0,1-7
// 03,1-3 <- this is gonna get parsed as [1,2,3]
// 3,2,1
// 0-2,3,1
func ParseUintList(val string) (map[int]bool, error) {
if val == "" {
return map[int]bool{}, nil
}
availableInts := make(map[int]bool)
split := strings.Split(val, ",")
errInvalidFormat := fmt.Errorf("invalid format: %s", val)
for _, r := range split {
if !strings.Contains(r, "-") {
v, err := strconv.Atoi(r)
if err != nil {
return nil, errInvalidFormat
}
availableInts[v] = true
} else {
split := strings.SplitN(r, "-", 2)
min, err := strconv.Atoi(split[0])
if err != nil {
return nil, errInvalidFormat
}
max, err := strconv.Atoi(split[1])
if err != nil {
return nil, errInvalidFormat
}
if max < min {
return nil, errInvalidFormat
}
for i := min; i <= max; i++ {
availableInts[i] = true
}
}
}
return availableInts, nil
}

1
vendor/github.com/docker/docker/pkg/sysinfo/README.md generated vendored
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@ -1 +0,0 @@
SysInfo stores information about which features a kernel supports.

12
vendor/github.com/docker/docker/pkg/sysinfo/numcpu.go generated vendored
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@ -1,12 +0,0 @@
// +build !linux,!windows
package sysinfo
import (
"runtime"
)
// NumCPU returns the number of CPUs
func NumCPU() int {
return runtime.NumCPU()
}

43
vendor/github.com/docker/docker/pkg/sysinfo/numcpu_linux.go generated vendored
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@ -1,43 +0,0 @@
// +build linux
package sysinfo
import (
"runtime"
"syscall"
"unsafe"
)
// numCPU queries the system for the count of threads available
// for use to this process.
//
// Issues two syscalls.
// Returns 0 on errors. Use |runtime.NumCPU| in that case.
func numCPU() int {
// Gets the affinity mask for a process: The very one invoking this function.
pid, _, _ := syscall.RawSyscall(syscall.SYS_GETPID, 0, 0, 0)
var mask [1024 / 64]uintptr
_, _, err := syscall.RawSyscall(syscall.SYS_SCHED_GETAFFINITY, pid, uintptr(len(mask)*8), uintptr(unsafe.Pointer(&mask[0])))
if err != 0 {
return 0
}
// For every available thread a bit is set in the mask.
ncpu := 0
for _, e := range mask {
if e == 0 {
continue
}
ncpu += int(popcnt(uint64(e)))
}
return ncpu
}
// NumCPU returns the number of CPUs which are currently online
func NumCPU() int {
if ncpu := numCPU(); ncpu > 0 {
return ncpu
}
return runtime.NumCPU()
}

37
vendor/github.com/docker/docker/pkg/sysinfo/numcpu_windows.go generated vendored
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@ -1,37 +0,0 @@
// +build windows
package sysinfo
import (
"runtime"
"unsafe"
"golang.org/x/sys/windows"
)
var (
kernel32 = windows.NewLazySystemDLL("kernel32.dll")
getCurrentProcess = kernel32.NewProc("GetCurrentProcess")
getProcessAffinityMask = kernel32.NewProc("GetProcessAffinityMask")
)
func numCPU() int {
// Gets the affinity mask for a process
var mask, sysmask uintptr
currentProcess, _, _ := getCurrentProcess.Call()
ret, _, _ := getProcessAffinityMask.Call(currentProcess, uintptr(unsafe.Pointer(&mask)), uintptr(unsafe.Pointer(&sysmask)))
if ret == 0 {
return 0
}
// For every available thread a bit is set in the mask.
ncpu := int(popcnt(uint64(mask)))
return ncpu
}
// NumCPU returns the number of CPUs which are currently online
func NumCPU() int {
if ncpu := numCPU(); ncpu > 0 {
return ncpu
}
return runtime.NumCPU()
}

144
vendor/github.com/docker/docker/pkg/sysinfo/sysinfo.go generated vendored
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@ -1,144 +0,0 @@
package sysinfo
import "github.com/docker/docker/pkg/parsers"
// SysInfo stores information about which features a kernel supports.
// TODO Windows: Factor out platform specific capabilities.
type SysInfo struct {
// Whether the kernel supports AppArmor or not
AppArmor bool
// Whether the kernel supports Seccomp or not
Seccomp bool
cgroupMemInfo
cgroupCPUInfo
cgroupBlkioInfo
cgroupCpusetInfo
cgroupPids
// Whether IPv4 forwarding is supported or not, if this was disabled, networking will not work
IPv4ForwardingDisabled bool
// Whether bridge-nf-call-iptables is supported or not
BridgeNFCallIPTablesDisabled bool
// Whether bridge-nf-call-ip6tables is supported or not
BridgeNFCallIP6TablesDisabled bool
// Whether the cgroup has the mountpoint of "devices" or not
CgroupDevicesEnabled bool
}
type cgroupMemInfo struct {
// Whether memory limit is supported or not
MemoryLimit bool
// Whether swap limit is supported or not
SwapLimit bool
// Whether soft limit is supported or not
MemoryReservation bool
// Whether OOM killer disable is supported or not
OomKillDisable bool
// Whether memory swappiness is supported or not
MemorySwappiness bool
// Whether kernel memory limit is supported or not
KernelMemory bool
}
type cgroupCPUInfo struct {
// Whether CPU shares is supported or not
CPUShares bool
// Whether CPU CFS(Completely Fair Scheduler) period is supported or not
CPUCfsPeriod bool
// Whether CPU CFS(Completely Fair Scheduler) quota is supported or not
CPUCfsQuota bool
// Whether CPU real-time period is supported or not
CPURealtimePeriod bool
// Whether CPU real-time runtime is supported or not
CPURealtimeRuntime bool
}
type cgroupBlkioInfo struct {
// Whether Block IO weight is supported or not
BlkioWeight bool
// Whether Block IO weight_device is supported or not
BlkioWeightDevice bool
// Whether Block IO read limit in bytes per second is supported or not
BlkioReadBpsDevice bool
// Whether Block IO write limit in bytes per second is supported or not
BlkioWriteBpsDevice bool
// Whether Block IO read limit in IO per second is supported or not
BlkioReadIOpsDevice bool
// Whether Block IO write limit in IO per second is supported or not
BlkioWriteIOpsDevice bool
}
type cgroupCpusetInfo struct {
// Whether Cpuset is supported or not
Cpuset bool
// Available Cpuset's cpus
Cpus string
// Available Cpuset's memory nodes
Mems string
}
type cgroupPids struct {
// Whether Pids Limit is supported or not
PidsLimit bool
}
// IsCpusetCpusAvailable returns `true` if the provided string set is contained
// in cgroup's cpuset.cpus set, `false` otherwise.
// If error is not nil a parsing error occurred.
func (c cgroupCpusetInfo) IsCpusetCpusAvailable(provided string) (bool, error) {
return isCpusetListAvailable(provided, c.Cpus)
}
// IsCpusetMemsAvailable returns `true` if the provided string set is contained
// in cgroup's cpuset.mems set, `false` otherwise.
// If error is not nil a parsing error occurred.
func (c cgroupCpusetInfo) IsCpusetMemsAvailable(provided string) (bool, error) {
return isCpusetListAvailable(provided, c.Mems)
}
func isCpusetListAvailable(provided, available string) (bool, error) {
parsedProvided, err := parsers.ParseUintList(provided)
if err != nil {
return false, err
}
parsedAvailable, err := parsers.ParseUintList(available)
if err != nil {
return false, err
}
for k := range parsedProvided {
if !parsedAvailable[k] {
return false, nil
}
}
return true, nil
}
// Returns bit count of 1, used by NumCPU
func popcnt(x uint64) (n byte) {
x -= (x >> 1) & 0x5555555555555555
x = (x>>2)&0x3333333333333333 + x&0x3333333333333333
x += x >> 4
x &= 0x0f0f0f0f0f0f0f0f
x *= 0x0101010101010101
return byte(x >> 56)
}

259
vendor/github.com/docker/docker/pkg/sysinfo/sysinfo_linux.go generated vendored
View File

@ -1,259 +0,0 @@
package sysinfo
import (
"fmt"
"io/ioutil"
"os"
"path"
"strings"
"syscall"
"github.com/Sirupsen/logrus"
"github.com/opencontainers/runc/libcontainer/cgroups"
)
const (
// SeccompModeFilter refers to the syscall argument SECCOMP_MODE_FILTER.
SeccompModeFilter = uintptr(2)
)
func findCgroupMountpoints() (map[string]string, error) {
cgMounts, err := cgroups.GetCgroupMounts(false)
if err != nil {
return nil, fmt.Errorf("Failed to parse cgroup information: %v", err)
}
mps := make(map[string]string)
for _, m := range cgMounts {
for _, ss := range m.Subsystems {
mps[ss] = m.Mountpoint
}
}
return mps, nil
}
// New returns a new SysInfo, using the filesystem to detect which features
// the kernel supports. If `quiet` is `false` warnings are printed in logs
// whenever an error occurs or misconfigurations are present.
func New(quiet bool) *SysInfo {
sysInfo := &SysInfo{}
cgMounts, err := findCgroupMountpoints()
if err != nil {
logrus.Warnf("Failed to parse cgroup information: %v", err)
} else {
sysInfo.cgroupMemInfo = checkCgroupMem(cgMounts, quiet)
sysInfo.cgroupCPUInfo = checkCgroupCPU(cgMounts, quiet)
sysInfo.cgroupBlkioInfo = checkCgroupBlkioInfo(cgMounts, quiet)
sysInfo.cgroupCpusetInfo = checkCgroupCpusetInfo(cgMounts, quiet)
sysInfo.cgroupPids = checkCgroupPids(quiet)
}
_, ok := cgMounts["devices"]
sysInfo.CgroupDevicesEnabled = ok
sysInfo.IPv4ForwardingDisabled = !readProcBool("/proc/sys/net/ipv4/ip_forward")
sysInfo.BridgeNFCallIPTablesDisabled = !readProcBool("/proc/sys/net/bridge/bridge-nf-call-iptables")
sysInfo.BridgeNFCallIP6TablesDisabled = !readProcBool("/proc/sys/net/bridge/bridge-nf-call-ip6tables")
// Check if AppArmor is supported.
if _, err := os.Stat("/sys/kernel/security/apparmor"); !os.IsNotExist(err) {
sysInfo.AppArmor = true
}
// Check if Seccomp is supported, via CONFIG_SECCOMP.
if _, _, err := syscall.RawSyscall(syscall.SYS_PRCTL, syscall.PR_GET_SECCOMP, 0, 0); err != syscall.EINVAL {
// Make sure the kernel has CONFIG_SECCOMP_FILTER.
if _, _, err := syscall.RawSyscall(syscall.SYS_PRCTL, syscall.PR_SET_SECCOMP, SeccompModeFilter, 0); err != syscall.EINVAL {
sysInfo.Seccomp = true
}
}
return sysInfo
}
// checkCgroupMem reads the memory information from the memory cgroup mount point.
func checkCgroupMem(cgMounts map[string]string, quiet bool) cgroupMemInfo {
mountPoint, ok := cgMounts["memory"]
if !ok {
if !quiet {
logrus.Warn("Your kernel does not support cgroup memory limit")
}
return cgroupMemInfo{}
}
swapLimit := cgroupEnabled(mountPoint, "memory.memsw.limit_in_bytes")
if !quiet && !swapLimit {
logrus.Warn("Your kernel does not support swap memory limit")
}
memoryReservation := cgroupEnabled(mountPoint, "memory.soft_limit_in_bytes")
if !quiet && !memoryReservation {
logrus.Warn("Your kernel does not support memory reservation")
}
oomKillDisable := cgroupEnabled(mountPoint, "memory.oom_control")
if !quiet && !oomKillDisable {
logrus.Warn("Your kernel does not support oom control")
}
memorySwappiness := cgroupEnabled(mountPoint, "memory.swappiness")
if !quiet && !memorySwappiness {
logrus.Warn("Your kernel does not support memory swappiness")
}
kernelMemory := cgroupEnabled(mountPoint, "memory.kmem.limit_in_bytes")
if !quiet && !kernelMemory {
logrus.Warn("Your kernel does not support kernel memory limit")
}
return cgroupMemInfo{
MemoryLimit: true,
SwapLimit: swapLimit,
MemoryReservation: memoryReservation,
OomKillDisable: oomKillDisable,
MemorySwappiness: memorySwappiness,
KernelMemory: kernelMemory,
}
}
// checkCgroupCPU reads the cpu information from the cpu cgroup mount point.
func checkCgroupCPU(cgMounts map[string]string, quiet bool) cgroupCPUInfo {
mountPoint, ok := cgMounts["cpu"]
if !ok {
if !quiet {
logrus.Warn("Unable to find cpu cgroup in mounts")
}
return cgroupCPUInfo{}
}
cpuShares := cgroupEnabled(mountPoint, "cpu.shares")
if !quiet && !cpuShares {
logrus.Warn("Your kernel does not support cgroup cpu shares")
}
cpuCfsPeriod := cgroupEnabled(mountPoint, "cpu.cfs_period_us")
if !quiet && !cpuCfsPeriod {
logrus.Warn("Your kernel does not support cgroup cfs period")
}
cpuCfsQuota := cgroupEnabled(mountPoint, "cpu.cfs_quota_us")
if !quiet && !cpuCfsQuota {
logrus.Warn("Your kernel does not support cgroup cfs quotas")
}
cpuRealtimePeriod := cgroupEnabled(mountPoint, "cpu.rt_period_us")
if !quiet && !cpuRealtimePeriod {
logrus.Warn("Your kernel does not support cgroup rt period")
}
cpuRealtimeRuntime := cgroupEnabled(mountPoint, "cpu.rt_runtime_us")
if !quiet && !cpuRealtimeRuntime {
logrus.Warn("Your kernel does not support cgroup rt runtime")
}
return cgroupCPUInfo{
CPUShares: cpuShares,
CPUCfsPeriod: cpuCfsPeriod,
CPUCfsQuota: cpuCfsQuota,
CPURealtimePeriod: cpuRealtimePeriod,
CPURealtimeRuntime: cpuRealtimeRuntime,
}
}
// checkCgroupBlkioInfo reads the blkio information from the blkio cgroup mount point.
func checkCgroupBlkioInfo(cgMounts map[string]string, quiet bool) cgroupBlkioInfo {
mountPoint, ok := cgMounts["blkio"]
if !ok {
if !quiet {
logrus.Warn("Unable to find blkio cgroup in mounts")
}
return cgroupBlkioInfo{}
}
weight := cgroupEnabled(mountPoint, "blkio.weight")
if !quiet && !weight {
logrus.Warn("Your kernel does not support cgroup blkio weight")
}
weightDevice := cgroupEnabled(mountPoint, "blkio.weight_device")
if !quiet && !weightDevice {
logrus.Warn("Your kernel does not support cgroup blkio weight_device")
}
readBpsDevice := cgroupEnabled(mountPoint, "blkio.throttle.read_bps_device")
if !quiet && !readBpsDevice {
logrus.Warn("Your kernel does not support cgroup blkio throttle.read_bps_device")
}
writeBpsDevice := cgroupEnabled(mountPoint, "blkio.throttle.write_bps_device")
if !quiet && !writeBpsDevice {
logrus.Warn("Your kernel does not support cgroup blkio throttle.write_bps_device")
}
readIOpsDevice := cgroupEnabled(mountPoint, "blkio.throttle.read_iops_device")
if !quiet && !readIOpsDevice {
logrus.Warn("Your kernel does not support cgroup blkio throttle.read_iops_device")
}
writeIOpsDevice := cgroupEnabled(mountPoint, "blkio.throttle.write_iops_device")
if !quiet && !writeIOpsDevice {
logrus.Warn("Your kernel does not support cgroup blkio throttle.write_iops_device")
}
return cgroupBlkioInfo{
BlkioWeight: weight,
BlkioWeightDevice: weightDevice,
BlkioReadBpsDevice: readBpsDevice,
BlkioWriteBpsDevice: writeBpsDevice,
BlkioReadIOpsDevice: readIOpsDevice,
BlkioWriteIOpsDevice: writeIOpsDevice,
}
}
// checkCgroupCpusetInfo reads the cpuset information from the cpuset cgroup mount point.
func checkCgroupCpusetInfo(cgMounts map[string]string, quiet bool) cgroupCpusetInfo {
mountPoint, ok := cgMounts["cpuset"]
if !ok {
if !quiet {
logrus.Warn("Unable to find cpuset cgroup in mounts")
}
return cgroupCpusetInfo{}
}
cpus, err := ioutil.ReadFile(path.Join(mountPoint, "cpuset.cpus"))
if err != nil {
return cgroupCpusetInfo{}
}
mems, err := ioutil.ReadFile(path.Join(mountPoint, "cpuset.mems"))
if err != nil {
return cgroupCpusetInfo{}
}
return cgroupCpusetInfo{
Cpuset: true,
Cpus: strings.TrimSpace(string(cpus)),
Mems: strings.TrimSpace(string(mems)),
}
}
// checkCgroupPids reads the pids information from the pids cgroup mount point.
func checkCgroupPids(quiet bool) cgroupPids {
_, err := cgroups.FindCgroupMountpoint("pids")
if err != nil {
if !quiet {
logrus.Warn(err)
}
return cgroupPids{}
}
return cgroupPids{
PidsLimit: true,
}
}
func cgroupEnabled(mountPoint, name string) bool {
_, err := os.Stat(path.Join(mountPoint, name))
return err == nil
}
func readProcBool(path string) bool {
val, err := ioutil.ReadFile(path)
if err != nil {
return false
}
return strings.TrimSpace(string(val)) == "1"
}

121
vendor/github.com/docker/docker/pkg/sysinfo/sysinfo_solaris.go generated vendored
View File

@ -1,121 +0,0 @@
// +build solaris,cgo
package sysinfo
import (
"bytes"
"os/exec"
"strconv"
"strings"
)
/*
#cgo LDFLAGS: -llgrp
#include <unistd.h>
#include <stdlib.h>
#include <sys/lgrp_user.h>
int getLgrpCount() {
lgrp_cookie_t lgrpcookie = LGRP_COOKIE_NONE;
uint_t nlgrps;
if ((lgrpcookie = lgrp_init(LGRP_VIEW_OS)) == LGRP_COOKIE_NONE) {
return -1;
}
nlgrps = lgrp_nlgrps(lgrpcookie);
return nlgrps;
}
*/
import "C"
// IsCPUSharesAvailable returns whether CPUShares setting is supported.
// We need FSS to be set as default scheduling class to support CPU Shares
func IsCPUSharesAvailable() bool {
cmd := exec.Command("/usr/sbin/dispadmin", "-d")
outBuf := new(bytes.Buffer)
errBuf := new(bytes.Buffer)
cmd.Stderr = errBuf
cmd.Stdout = outBuf
if err := cmd.Run(); err != nil {
return false
}
return (strings.Contains(outBuf.String(), "FSS"))
}
// New returns a new SysInfo, using the filesystem to detect which features
// the kernel supports.
//NOTE Solaris: If we change the below capabilities be sure
// to update verifyPlatformContainerSettings() in daemon_solaris.go
func New(quiet bool) *SysInfo {
sysInfo := &SysInfo{}
sysInfo.cgroupMemInfo = setCgroupMem(quiet)
sysInfo.cgroupCPUInfo = setCgroupCPU(quiet)
sysInfo.cgroupBlkioInfo = setCgroupBlkioInfo(quiet)
sysInfo.cgroupCpusetInfo = setCgroupCPUsetInfo(quiet)
sysInfo.IPv4ForwardingDisabled = false
sysInfo.AppArmor = false
return sysInfo
}
// setCgroupMem reads the memory information for Solaris.
func setCgroupMem(quiet bool) cgroupMemInfo {
return cgroupMemInfo{
MemoryLimit: true,
SwapLimit: true,
MemoryReservation: false,
OomKillDisable: false,
MemorySwappiness: false,
KernelMemory: false,
}
}
// setCgroupCPU reads the cpu information for Solaris.
func setCgroupCPU(quiet bool) cgroupCPUInfo {
return cgroupCPUInfo{
CPUShares: true,
CPUCfsPeriod: false,
CPUCfsQuota: true,
CPURealtimePeriod: false,
CPURealtimeRuntime: false,
}
}
// blkio switches are not supported in Solaris.
func setCgroupBlkioInfo(quiet bool) cgroupBlkioInfo {
return cgroupBlkioInfo{
BlkioWeight: false,
BlkioWeightDevice: false,
}
}
// setCgroupCPUsetInfo reads the cpuset information for Solaris.
func setCgroupCPUsetInfo(quiet bool) cgroupCpusetInfo {
return cgroupCpusetInfo{
Cpuset: true,
Cpus: getCPUCount(),
Mems: getLgrpCount(),
}
}
func getCPUCount() string {
ncpus := C.sysconf(C._SC_NPROCESSORS_ONLN)
if ncpus <= 0 {
return ""
}
return strconv.FormatInt(int64(ncpus), 16)
}
func getLgrpCount() string {
nlgrps := C.getLgrpCount()
if nlgrps <= 0 {
return ""
}
return strconv.FormatInt(int64(nlgrps), 16)
}

9
vendor/github.com/docker/docker/pkg/sysinfo/sysinfo_unix.go generated vendored
View File

@ -1,9 +0,0 @@
// +build !linux,!solaris,!windows
package sysinfo
// New returns an empty SysInfo for non linux nor solaris for now.
func New(quiet bool) *SysInfo {
sysInfo := &SysInfo{}
return sysInfo
}

9
vendor/github.com/docker/docker/pkg/sysinfo/sysinfo_windows.go generated vendored
View File

@ -1,9 +0,0 @@
// +build windows
package sysinfo
// New returns an empty SysInfo for windows for now.
func New(quiet bool) *SysInfo {
sysInfo := &SysInfo{}
return sysInfo
}

108
vendor/github.com/docker/docker/runconfig/config.go generated vendored
View File

@ -1,108 +0,0 @@
package runconfig
import (
"encoding/json"
"fmt"
"io"
"github.com/docker/docker/api/types/container"
networktypes "github.com/docker/docker/api/types/network"
"github.com/docker/docker/pkg/sysinfo"
"github.com/docker/docker/volume"
)
// ContainerDecoder implements httputils.ContainerDecoder
// calling DecodeContainerConfig.
type ContainerDecoder struct{}
// DecodeConfig makes ContainerDecoder to implement httputils.ContainerDecoder
func (r ContainerDecoder) DecodeConfig(src io.Reader) (*container.Config, *container.HostConfig, *networktypes.NetworkingConfig, error) {
return DecodeContainerConfig(src)
}
// DecodeHostConfig makes ContainerDecoder to implement httputils.ContainerDecoder
func (r ContainerDecoder) DecodeHostConfig(src io.Reader) (*container.HostConfig, error) {
return DecodeHostConfig(src)
}
// DecodeContainerConfig decodes a json encoded config into a ContainerConfigWrapper
// struct and returns both a Config and a HostConfig struct
// Be aware this function is not checking whether the resulted structs are nil,
// it's your business to do so
func DecodeContainerConfig(src io.Reader) (*container.Config, *container.HostConfig, *networktypes.NetworkingConfig, error) {
var w ContainerConfigWrapper
decoder := json.NewDecoder(src)
if err := decoder.Decode(&w); err != nil {
return nil, nil, nil, err
}
hc := w.getHostConfig()
// Perform platform-specific processing of Volumes and Binds.
if w.Config != nil && hc != nil {
// Initialize the volumes map if currently nil
if w.Config.Volumes == nil {
w.Config.Volumes = make(map[string]struct{})
}
// Now validate all the volumes and binds
if err := validateMountSettings(w.Config, hc); err != nil {
return nil, nil, nil, err
}
}
// Certain parameters need daemon-side validation that cannot be done
// on the client, as only the daemon knows what is valid for the platform.
if err := validateNetMode(w.Config, hc); err != nil {
return nil, nil, nil, err
}
// Validate isolation
if err := validateIsolation(hc); err != nil {
return nil, nil, nil, err
}
// Validate QoS
if err := validateQoS(hc); err != nil {
return nil, nil, nil, err
}
// Validate Resources
if err := validateResources(hc, sysinfo.New(true)); err != nil {
return nil, nil, nil, err
}
// Validate Privileged
if err := validatePrivileged(hc); err != nil {
return nil, nil, nil, err
}
// Validate ReadonlyRootfs
if err := validateReadonlyRootfs(hc); err != nil {
return nil, nil, nil, err
}
return w.Config, hc, w.NetworkingConfig, nil
}
// validateMountSettings validates each of the volumes and bind settings
// passed by the caller to ensure they are valid.
func validateMountSettings(c *container.Config, hc *container.HostConfig) error {
// it is ok to have len(hc.Mounts) > 0 && (len(hc.Binds) > 0 || len (c.Volumes) > 0 || len (hc.Tmpfs) > 0 )
// Ensure all volumes and binds are valid.
for spec := range c.Volumes {
if _, err := volume.ParseMountRaw(spec, hc.VolumeDriver); err != nil {
return fmt.Errorf("invalid volume spec %q: %v", spec, err)
}
}
for _, spec := range hc.Binds {
if _, err := volume.ParseMountRaw(spec, hc.VolumeDriver); err != nil {
return fmt.Errorf("invalid bind mount spec %q: %v", spec, err)
}
}
return nil
}

59
vendor/github.com/docker/docker/runconfig/config_unix.go generated vendored
View File

@ -1,59 +0,0 @@
// +build !windows
package runconfig
import (
"github.com/docker/docker/api/types/container"
networktypes "github.com/docker/docker/api/types/network"
)
// ContainerConfigWrapper is a Config wrapper that holds the container Config (portable)
// and the corresponding HostConfig (non-portable).
type ContainerConfigWrapper struct {
*container.Config
InnerHostConfig *container.HostConfig `json:"HostConfig,omitempty"`
Cpuset string `json:",omitempty"` // Deprecated. Exported for backwards compatibility.
NetworkingConfig *networktypes.NetworkingConfig `json:"NetworkingConfig,omitempty"`
*container.HostConfig // Deprecated. Exported to read attributes from json that are not in the inner host config structure.
}
// getHostConfig gets the HostConfig of the Config.
// It's mostly there to handle Deprecated fields of the ContainerConfigWrapper
func (w *ContainerConfigWrapper) getHostConfig() *container.HostConfig {
hc := w.HostConfig
if hc == nil && w.InnerHostConfig != nil {
hc = w.InnerHostConfig
} else if w.InnerHostConfig != nil {
if hc.Memory != 0 && w.InnerHostConfig.Memory == 0 {
w.InnerHostConfig.Memory = hc.Memory
}
if hc.MemorySwap != 0 && w.InnerHostConfig.MemorySwap == 0 {
w.InnerHostConfig.MemorySwap = hc.MemorySwap
}
if hc.CPUShares != 0 && w.InnerHostConfig.CPUShares == 0 {
w.InnerHostConfig.CPUShares = hc.CPUShares
}
if hc.CpusetCpus != "" && w.InnerHostConfig.CpusetCpus == "" {
w.InnerHostConfig.CpusetCpus = hc.CpusetCpus
}
if hc.VolumeDriver != "" && w.InnerHostConfig.VolumeDriver == "" {
w.InnerHostConfig.VolumeDriver = hc.VolumeDriver
}
hc = w.InnerHostConfig
}
if hc != nil {
if w.Cpuset != "" && hc.CpusetCpus == "" {
hc.CpusetCpus = w.Cpuset
}
}
// Make sure NetworkMode has an acceptable value. We do this to ensure
// backwards compatible API behavior.
SetDefaultNetModeIfBlank(hc)
return hc
}

19
vendor/github.com/docker/docker/runconfig/config_windows.go generated vendored
View File

@ -1,19 +0,0 @@
package runconfig
import (
"github.com/docker/docker/api/types/container"
networktypes "github.com/docker/docker/api/types/network"
)
// ContainerConfigWrapper is a Config wrapper that holds the container Config (portable)
// and the corresponding HostConfig (non-portable).
type ContainerConfigWrapper struct {
*container.Config
HostConfig *container.HostConfig `json:"HostConfig,omitempty"`
NetworkingConfig *networktypes.NetworkingConfig `json:"NetworkingConfig,omitempty"`
}
// getHostConfig gets the HostConfig of the Config.
func (w *ContainerConfigWrapper) getHostConfig() *container.HostConfig {
return w.HostConfig
}

38
vendor/github.com/docker/docker/runconfig/errors.go generated vendored
View File

@ -1,38 +0,0 @@
package runconfig
import (
"fmt"
)
var (
// ErrConflictContainerNetworkAndLinks conflict between --net=container and links
ErrConflictContainerNetworkAndLinks = fmt.Errorf("conflicting options: container type network can't be used with links. This would result in undefined behavior")
// ErrConflictSharedNetwork conflict between private and other networks
ErrConflictSharedNetwork = fmt.Errorf("container sharing network namespace with another container or host cannot be connected to any other network")
// ErrConflictHostNetwork conflict from being disconnected from host network or connected to host network.
ErrConflictHostNetwork = fmt.Errorf("container cannot be disconnected from host network or connected to host network")
// ErrConflictNoNetwork conflict between private and other networks
ErrConflictNoNetwork = fmt.Errorf("container cannot be connected to multiple networks with one of the networks in private (none) mode")
// ErrConflictNetworkAndDNS conflict between --dns and the network mode
ErrConflictNetworkAndDNS = fmt.Errorf("conflicting options: dns and the network mode")
// ErrConflictNetworkHostname conflict between the hostname and the network mode
ErrConflictNetworkHostname = fmt.Errorf("conflicting options: hostname and the network mode")
// ErrConflictHostNetworkAndLinks conflict between --net=host and links
ErrConflictHostNetworkAndLinks = fmt.Errorf("conflicting options: host type networking can't be used with links. This would result in undefined behavior")
// ErrConflictContainerNetworkAndMac conflict between the mac address and the network mode
ErrConflictContainerNetworkAndMac = fmt.Errorf("conflicting options: mac-address and the network mode")
// ErrConflictNetworkHosts conflict between add-host and the network mode
ErrConflictNetworkHosts = fmt.Errorf("conflicting options: custom host-to-IP mapping and the network mode")
// ErrConflictNetworkPublishPorts conflict between the publish options and the network mode
ErrConflictNetworkPublishPorts = fmt.Errorf("conflicting options: port publishing and the container type network mode")
// ErrConflictNetworkExposePorts conflict between the expose option and the network mode
ErrConflictNetworkExposePorts = fmt.Errorf("conflicting options: port exposing and the container type network mode")
// ErrUnsupportedNetworkAndIP conflict between network mode and requested ip address
ErrUnsupportedNetworkAndIP = fmt.Errorf("user specified IP address is supported on user defined networks only")
// ErrUnsupportedNetworkNoSubnetAndIP conflict between network with no configured subnet and requested ip address
ErrUnsupportedNetworkNoSubnetAndIP = fmt.Errorf("user specified IP address is supported only when connecting to networks with user configured subnets")
// ErrUnsupportedNetworkAndAlias conflict between network mode and alias
ErrUnsupportedNetworkAndAlias = fmt.Errorf("network-scoped alias is supported only for containers in user defined networks")
// ErrConflictUTSHostname conflict between the hostname and the UTS mode
ErrConflictUTSHostname = fmt.Errorf("conflicting options: hostname and the UTS mode")
)

80
vendor/github.com/docker/docker/runconfig/hostconfig.go generated vendored
View File

@ -1,80 +0,0 @@
package runconfig
import (
"encoding/json"
"fmt"
"io"
"strings"
"github.com/docker/docker/api/types/container"
)
// DecodeHostConfig creates a HostConfig based on the specified Reader.
// It assumes the content of the reader will be JSON, and decodes it.
func DecodeHostConfig(src io.Reader) (*container.HostConfig, error) {
decoder := json.NewDecoder(src)
var w ContainerConfigWrapper
if err := decoder.Decode(&w); err != nil {
return nil, err
}
hc := w.getHostConfig()
return hc, nil
}
// SetDefaultNetModeIfBlank changes the NetworkMode in a HostConfig structure
// to default if it is not populated. This ensures backwards compatibility after
// the validation of the network mode was moved from the docker CLI to the
// docker daemon.
func SetDefaultNetModeIfBlank(hc *container.HostConfig) {
if hc != nil {
if hc.NetworkMode == container.NetworkMode("") {
hc.NetworkMode = container.NetworkMode("default")
}
}
}
// validateNetContainerMode ensures that the various combinations of requested
// network settings wrt container mode are valid.
func validateNetContainerMode(c *container.Config, hc *container.HostConfig) error {
// We may not be passed a host config, such as in the case of docker commit
if hc == nil {
return nil
}
parts := strings.Split(string(hc.NetworkMode), ":")
if parts[0] == "container" {
if len(parts) < 2 || parts[1] == "" {
return fmt.Errorf("Invalid network mode: invalid container format container:<name|id>")
}
}
if hc.NetworkMode.IsContainer() && c.Hostname != "" {
return ErrConflictNetworkHostname
}
if hc.NetworkMode.IsContainer() && len(hc.Links) > 0 {
return ErrConflictContainerNetworkAndLinks
}
if hc.NetworkMode.IsContainer() && len(hc.DNS) > 0 {
return ErrConflictNetworkAndDNS
}
if hc.NetworkMode.IsContainer() && len(hc.ExtraHosts) > 0 {
return ErrConflictNetworkHosts
}
if (hc.NetworkMode.IsContainer() || hc.NetworkMode.IsHost()) && c.MacAddress != "" {
return ErrConflictContainerNetworkAndMac
}
if hc.NetworkMode.IsContainer() && (len(hc.PortBindings) > 0 || hc.PublishAllPorts == true) {
return ErrConflictNetworkPublishPorts
}
if hc.NetworkMode.IsContainer() && len(c.ExposedPorts) > 0 {
return ErrConflictNetworkExposePorts
}
return nil
}

46
vendor/github.com/docker/docker/runconfig/hostconfig_solaris.go generated vendored
View File

@ -1,46 +0,0 @@
package runconfig
import (
"github.com/docker/docker/api/types/container"
"github.com/docker/docker/pkg/sysinfo"
)
// DefaultDaemonNetworkMode returns the default network stack the daemon should
// use.
func DefaultDaemonNetworkMode() container.NetworkMode {
return container.NetworkMode("bridge")
}
// IsPreDefinedNetwork indicates if a network is predefined by the daemon
func IsPreDefinedNetwork(network string) bool {
return false
}
// validateNetMode ensures that the various combinations of requested
// network settings are valid.
func validateNetMode(c *container.Config, hc *container.HostConfig) error {
// We may not be passed a host config, such as in the case of docker commit
return nil
}
// validateIsolation performs platform specific validation of the
// isolation level in the hostconfig structure.
// This setting is currently discarded for Solaris so this is a no-op.
func validateIsolation(hc *container.HostConfig) error {
return nil
}
// validateQoS performs platform specific validation of the QoS settings
func validateQoS(hc *container.HostConfig) error {
return nil
}
// validateResources performs platform specific validation of the resource settings
func validateResources(hc *container.HostConfig, si *sysinfo.SysInfo) error {
return nil
}
// validatePrivileged performs platform specific validation of the Privileged setting
func validatePrivileged(hc *container.HostConfig) error {
return nil
}

110
vendor/github.com/docker/docker/runconfig/hostconfig_unix.go generated vendored
View File

@ -1,110 +0,0 @@
// +build !windows,!solaris
package runconfig
import (
"fmt"
"runtime"
"github.com/docker/docker/api/types/container"
"github.com/docker/docker/pkg/sysinfo"
)
// DefaultDaemonNetworkMode returns the default network stack the daemon should
// use.
func DefaultDaemonNetworkMode() container.NetworkMode {
return container.NetworkMode("bridge")
}
// IsPreDefinedNetwork indicates if a network is predefined by the daemon
func IsPreDefinedNetwork(network string) bool {
n := container.NetworkMode(network)
return n.IsBridge() || n.IsHost() || n.IsNone() || n.IsDefault()
}
// validateNetMode ensures that the various combinations of requested
// network settings are valid.
func validateNetMode(c *container.Config, hc *container.HostConfig) error {
// We may not be passed a host config, such as in the case of docker commit
if hc == nil {
return nil
}
err := validateNetContainerMode(c, hc)
if err != nil {
return err
}
if hc.UTSMode.IsHost() && c.Hostname != "" {
return ErrConflictUTSHostname
}
if hc.NetworkMode.IsHost() && len(hc.Links) > 0 {
return ErrConflictHostNetworkAndLinks
}
return nil
}
// validateIsolation performs platform specific validation of
// isolation in the hostconfig structure. Linux only supports "default"
// which is LXC container isolation
func validateIsolation(hc *container.HostConfig) error {
// We may not be passed a host config, such as in the case of docker commit
if hc == nil {
return nil
}
if !hc.Isolation.IsValid() {
return fmt.Errorf("Invalid isolation: %q - %s only supports 'default'", hc.Isolation, runtime.GOOS)
}
return nil
}
// validateQoS performs platform specific validation of the QoS settings
func validateQoS(hc *container.HostConfig) error {
// We may not be passed a host config, such as in the case of docker commit
if hc == nil {
return nil
}
if hc.IOMaximumBandwidth != 0 {
return fmt.Errorf("Invalid QoS settings: %s does not support configuration of maximum bandwidth", runtime.GOOS)
}
if hc.IOMaximumIOps != 0 {
return fmt.Errorf("Invalid QoS settings: %s does not support configuration of maximum IOPs", runtime.GOOS)
}
return nil
}
// validateResources performs platform specific validation of the resource settings
// cpu-rt-runtime and cpu-rt-period can not be greater than their parent, cpu-rt-runtime requires sys_nice
func validateResources(hc *container.HostConfig, si *sysinfo.SysInfo) error {
// We may not be passed a host config, such as in the case of docker commit
if hc == nil {
return nil
}
if hc.Resources.CPURealtimePeriod > 0 && !si.CPURealtimePeriod {
return fmt.Errorf("Your kernel does not support cgroup cpu real-time period")
}
if hc.Resources.CPURealtimeRuntime > 0 && !si.CPURealtimeRuntime {
return fmt.Errorf("Your kernel does not support cgroup cpu real-time runtime")
}
if hc.Resources.CPURealtimePeriod != 0 && hc.Resources.CPURealtimeRuntime != 0 && hc.Resources.CPURealtimeRuntime > hc.Resources.CPURealtimePeriod {
return fmt.Errorf("cpu real-time runtime cannot be higher than cpu real-time period")
}
return nil
}
// validatePrivileged performs platform specific validation of the Privileged setting
func validatePrivileged(hc *container.HostConfig) error {
return nil
}
// validateReadonlyRootfs performs platform specific validation of the ReadonlyRootfs setting
func validateReadonlyRootfs(hc *container.HostConfig) error {
return nil
}

96
vendor/github.com/docker/docker/runconfig/hostconfig_windows.go generated vendored
View File

@ -1,96 +0,0 @@
package runconfig
import (
"fmt"
"github.com/docker/docker/api/types/container"
"github.com/docker/docker/pkg/sysinfo"
)
// DefaultDaemonNetworkMode returns the default network stack the daemon should
// use.
func DefaultDaemonNetworkMode() container.NetworkMode {
return container.NetworkMode("nat")
}
// IsPreDefinedNetwork indicates if a network is predefined by the daemon
func IsPreDefinedNetwork(network string) bool {
return !container.NetworkMode(network).IsUserDefined()
}
// validateNetMode ensures that the various combinations of requested
// network settings are valid.
func validateNetMode(c *container.Config, hc *container.HostConfig) error {
if hc == nil {
return nil
}
err := validateNetContainerMode(c, hc)
if err != nil {
return err
}
if hc.NetworkMode.IsContainer() && hc.Isolation.IsHyperV() {
return fmt.Errorf("Using the network stack of another container is not supported while using Hyper-V Containers")
}
return nil
}
// validateIsolation performs platform specific validation of the
// isolation in the hostconfig structure. Windows supports 'default' (or
// blank), 'process', or 'hyperv'.
func validateIsolation(hc *container.HostConfig) error {
// We may not be passed a host config, such as in the case of docker commit
if hc == nil {
return nil
}
if !hc.Isolation.IsValid() {
return fmt.Errorf("Invalid isolation: %q. Windows supports 'default', 'process', or 'hyperv'", hc.Isolation)
}
return nil
}
// validateQoS performs platform specific validation of the Qos settings
func validateQoS(hc *container.HostConfig) error {
return nil
}
// validateResources performs platform specific validation of the resource settings
func validateResources(hc *container.HostConfig, si *sysinfo.SysInfo) error {
// We may not be passed a host config, such as in the case of docker commit
if hc == nil {
return nil
}
if hc.Resources.CPURealtimePeriod != 0 {
return fmt.Errorf("Windows does not support CPU real-time period")
}
if hc.Resources.CPURealtimeRuntime != 0 {
return fmt.Errorf("Windows does not support CPU real-time runtime")
}
return nil
}
// validatePrivileged performs platform specific validation of the Privileged setting
func validatePrivileged(hc *container.HostConfig) error {
// We may not be passed a host config, such as in the case of docker commit
if hc == nil {
return nil
}
if hc.Privileged {
return fmt.Errorf("Windows does not support privileged mode")
}
return nil
}
// validateReadonlyRootfs performs platform specific validation of the ReadonlyRootfs setting
func validateReadonlyRootfs(hc *container.HostConfig) error {
// We may not be passed a host config, such as in the case of docker commit
if hc == nil {
return nil
}
if hc.ReadonlyRootfs {
return fmt.Errorf("Windows does not support root filesystem in read-only mode")
}
return nil
}

140
vendor/github.com/docker/docker/volume/validate.go generated vendored
View File

@ -1,140 +0,0 @@
package volume
import (
"errors"
"fmt"
"os"
"path/filepath"
"github.com/docker/docker/api/types/mount"
)
var errBindNotExist = errors.New("bind source path does not exist")
type validateOpts struct {
skipBindSourceCheck bool
skipAbsolutePathCheck bool
}
func validateMountConfig(mnt *mount.Mount, options ...func(*validateOpts)) error {
opts := validateOpts{}
for _, o := range options {
o(&opts)
}
if len(mnt.Target) == 0 {
return &errMountConfig{mnt, errMissingField("Target")}
}
if err := validateNotRoot(mnt.Target); err != nil {
return &errMountConfig{mnt, err}
}
if !opts.skipAbsolutePathCheck {
if err := validateAbsolute(mnt.Target); err != nil {
return &errMountConfig{mnt, err}
}
}
switch mnt.Type {
case mount.TypeBind:
if len(mnt.Source) == 0 {
return &errMountConfig{mnt, errMissingField("Source")}
}
// Don't error out just because the propagation mode is not supported on the platform
if opts := mnt.BindOptions; opts != nil {
if len(opts.Propagation) > 0 && len(propagationModes) > 0 {
if _, ok := propagationModes[opts.Propagation]; !ok {
return &errMountConfig{mnt, fmt.Errorf("invalid propagation mode: %s", opts.Propagation)}
}
}
}
if mnt.VolumeOptions != nil {
return &errMountConfig{mnt, errExtraField("VolumeOptions")}
}
if err := validateAbsolute(mnt.Source); err != nil {
return &errMountConfig{mnt, err}
}
// Do not allow binding to non-existent path
if !opts.skipBindSourceCheck {
fi, err := os.Stat(mnt.Source)
if err != nil {
if !os.IsNotExist(err) {
return &errMountConfig{mnt, err}
}
return &errMountConfig{mnt, errBindNotExist}
}
if err := validateStat(fi); err != nil {
return &errMountConfig{mnt, err}
}
}
case mount.TypeVolume:
if mnt.BindOptions != nil {
return &errMountConfig{mnt, errExtraField("BindOptions")}
}
if len(mnt.Source) == 0 && mnt.ReadOnly {
return &errMountConfig{mnt, fmt.Errorf("must not set ReadOnly mode when using anonymous volumes")}
}
if len(mnt.Source) != 0 {
if valid, err := IsVolumeNameValid(mnt.Source); !valid {
if err == nil {
err = errors.New("invalid volume name")
}
return &errMountConfig{mnt, err}
}
}
case mount.TypeTmpfs:
if len(mnt.Source) != 0 {
return &errMountConfig{mnt, errExtraField("Source")}
}
if err := ValidateTmpfsMountDestination(mnt.Target); err != nil {
return &errMountConfig{mnt, err}
}
if _, err := ConvertTmpfsOptions(mnt.TmpfsOptions, mnt.ReadOnly); err != nil {
return &errMountConfig{mnt, err}
}
default:
return &errMountConfig{mnt, errors.New("mount type unknown")}
}
return nil
}
type errMountConfig struct {
mount *mount.Mount
err error
}
func (e *errMountConfig) Error() string {
return fmt.Sprintf("invalid mount config for type %q: %v", e.mount.Type, e.err.Error())
}
func errExtraField(name string) error {
return fmt.Errorf("field %s must not be specified", name)
}
func errMissingField(name string) error {
return fmt.Errorf("field %s must not be empty", name)
}
func validateAbsolute(p string) error {
p = convertSlash(p)
if filepath.IsAbs(p) {
return nil
}
return fmt.Errorf("invalid mount path: '%s' mount path must be absolute", p)
}
// ValidateTmpfsMountDestination validates the destination of tmpfs mount.
// Currently, we have only two obvious rule for validation:
// - path must not be "/"
// - path must be absolute
// We should add more rules carefully (#30166)
func ValidateTmpfsMountDestination(dest string) error {
if err := validateNotRoot(dest); err != nil {
return err
}
return validateAbsolute(dest)
}

8
vendor/github.com/docker/docker/volume/validate_test_unix.go generated vendored
View File

@ -1,8 +0,0 @@
// +build !windows
package volume
var (
testDestinationPath = "/foo"
testSourcePath = "/foo"
)

6
vendor/github.com/docker/docker/volume/validate_test_windows.go generated vendored
View File

@ -1,6 +0,0 @@
package volume
var (
testDestinationPath = `c:\foo`
testSourcePath = `c:\foo`
)

374
vendor/github.com/docker/docker/volume/volume.go generated vendored
View File

@ -1,374 +0,0 @@
package volume
import (
"fmt"
"os"
"path/filepath"
"strings"
"syscall"
"time"
mounttypes "github.com/docker/docker/api/types/mount"
"github.com/docker/docker/pkg/idtools"
"github.com/docker/docker/pkg/stringid"
"github.com/opencontainers/selinux/go-selinux/label"
"github.com/pkg/errors"
)
// DefaultDriverName is the driver name used for the driver
// implemented in the local package.
const DefaultDriverName = "local"
// Scopes define if a volume has is cluster-wide (global) or local only.
// Scopes are returned by the volume driver when it is queried for capabilities and then set on a volume
const (
LocalScope = "local"
GlobalScope = "global"
)
// Driver is for creating and removing volumes.
type Driver interface {
// Name returns the name of the volume driver.
Name() string
// Create makes a new volume with the given name.
Create(name string, opts map[string]string) (Volume, error)
// Remove deletes the volume.
Remove(vol Volume) (err error)
// List lists all the volumes the driver has
List() ([]Volume, error)
// Get retrieves the volume with the requested name
Get(name string) (Volume, error)
// Scope returns the scope of the driver (e.g. `global` or `local`).
// Scope determines how the driver is handled at a cluster level
Scope() string
}
// Capability defines a set of capabilities that a driver is able to handle.
type Capability struct {
// Scope is the scope of the driver, `global` or `local`
// A `global` scope indicates that the driver manages volumes across the cluster
// A `local` scope indicates that the driver only manages volumes resources local to the host
// Scope is declared by the driver
Scope string
}
// Volume is a place to store data. It is backed by a specific driver, and can be mounted.
type Volume interface {
// Name returns the name of the volume
Name() string
// DriverName returns the name of the driver which owns this volume.
DriverName() string
// Path returns the absolute path to the volume.
Path() string
// Mount mounts the volume and returns the absolute path to
// where it can be consumed.
Mount(id string) (string, error)
// Unmount unmounts the volume when it is no longer in use.
Unmount(id string) error
// CreatedAt returns Volume Creation time
CreatedAt() (time.Time, error)
// Status returns low-level status information about a volume
Status() map[string]interface{}
}
// DetailedVolume wraps a Volume with user-defined labels, options, and cluster scope (e.g., `local` or `global`)
type DetailedVolume interface {
Labels() map[string]string
Options() map[string]string
Scope() string
Volume
}
// MountPoint is the intersection point between a volume and a container. It
// specifies which volume is to be used and where inside a container it should
// be mounted.
type MountPoint struct {
// Source is the source path of the mount.
// E.g. `mount --bind /foo /bar`, `/foo` is the `Source`.
Source string
// Destination is the path relative to the container root (`/`) to the mount point
// It is where the `Source` is mounted to
Destination string
// RW is set to true when the mountpoint should be mounted as read-write
RW bool
// Name is the name reference to the underlying data defined by `Source`
// e.g., the volume name
Name string
// Driver is the volume driver used to create the volume (if it is a volume)
Driver string
// Type of mount to use, see `Type<foo>` definitions in github.com/docker/docker/api/types/mount
Type mounttypes.Type `json:",omitempty"`
// Volume is the volume providing data to this mountpoint.
// This is nil unless `Type` is set to `TypeVolume`
Volume Volume `json:"-"`
// Mode is the comma separated list of options supplied by the user when creating
// the bind/volume mount.
// Note Mode is not used on Windows
Mode string `json:"Relabel,omitempty"` // Originally field was `Relabel`"
// Propagation describes how the mounts are propagated from the host into the
// mount point, and vice-versa.
// See https://www.kernel.org/doc/Documentation/filesystems/sharedsubtree.txt
// Note Propagation is not used on Windows
Propagation mounttypes.Propagation `json:",omitempty"` // Mount propagation string
// Specifies if data should be copied from the container before the first mount
// Use a pointer here so we can tell if the user set this value explicitly
// This allows us to error out when the user explicitly enabled copy but we can't copy due to the volume being populated
CopyData bool `json:"-"`
// ID is the opaque ID used to pass to the volume driver.
// This should be set by calls to `Mount` and unset by calls to `Unmount`
ID string `json:",omitempty"`
// Sepc is a copy of the API request that created this mount.
Spec mounttypes.Mount
// Track usage of this mountpoint
// Specifically needed for containers which are running and calls to `docker cp`
// because both these actions require mounting the volumes.
active int
}
// Cleanup frees resources used by the mountpoint
func (m *MountPoint) Cleanup() error {
if m.Volume == nil || m.ID == "" {
return nil
}
if err := m.Volume.Unmount(m.ID); err != nil {
return errors.Wrapf(err, "error unmounting volume %s", m.Volume.Name())
}
m.active--
if m.active == 0 {
m.ID = ""
}
return nil
}
// Setup sets up a mount point by either mounting the volume if it is
// configured, or creating the source directory if supplied.
// The, optional, checkFun parameter allows doing additional checking
// before creating the source directory on the host.
func (m *MountPoint) Setup(mountLabel string, rootIDs idtools.IDPair, checkFun func(m *MountPoint) error) (path string, err error) {
defer func() {
if err != nil || !label.RelabelNeeded(m.Mode) {
return
}
err = label.Relabel(m.Source, mountLabel, label.IsShared(m.Mode))
if err == syscall.ENOTSUP {
err = nil
}
if err != nil {
path = ""
err = errors.Wrapf(err, "error setting label on mount source '%s'", m.Source)
}
}()
if m.Volume != nil {
id := m.ID
if id == "" {
id = stringid.GenerateNonCryptoID()
}
path, err := m.Volume.Mount(id)
if err != nil {
return "", errors.Wrapf(err, "error while mounting volume '%s'", m.Source)
}
m.ID = id
m.active++
return path, nil
}
if len(m.Source) == 0 {
return "", fmt.Errorf("Unable to setup mount point, neither source nor volume defined")
}
// system.MkdirAll() produces an error if m.Source exists and is a file (not a directory),
if m.Type == mounttypes.TypeBind {
// Before creating the source directory on the host, invoke checkFun if it's not nil. One of
// the use case is to forbid creating the daemon socket as a directory if the daemon is in
// the process of shutting down.
if checkFun != nil {
if err := checkFun(m); err != nil {
return "", err
}
}
// idtools.MkdirAllNewAs() produces an error if m.Source exists and is a file (not a directory)
// also, makes sure that if the directory is created, the correct remapped rootUID/rootGID will own it
if err := idtools.MkdirAllAndChownNew(m.Source, 0755, rootIDs); err != nil {
if perr, ok := err.(*os.PathError); ok {
if perr.Err != syscall.ENOTDIR {
return "", errors.Wrapf(err, "error while creating mount source path '%s'", m.Source)
}
}
}
}
return m.Source, nil
}
// Path returns the path of a volume in a mount point.
func (m *MountPoint) Path() string {
if m.Volume != nil {
return m.Volume.Path()
}
return m.Source
}
// ParseVolumesFrom ensures that the supplied volumes-from is valid.
func ParseVolumesFrom(spec string) (string, string, error) {
if len(spec) == 0 {
return "", "", fmt.Errorf("volumes-from specification cannot be an empty string")
}
specParts := strings.SplitN(spec, ":", 2)
id := specParts[0]
mode := "rw"
if len(specParts) == 2 {
mode = specParts[1]
if !ValidMountMode(mode) {
return "", "", errInvalidMode(mode)
}
// For now don't allow propagation properties while importing
// volumes from data container. These volumes will inherit
// the same propagation property as of the original volume
// in data container. This probably can be relaxed in future.
if HasPropagation(mode) {
return "", "", errInvalidMode(mode)
}
// Do not allow copy modes on volumes-from
if _, isSet := getCopyMode(mode); isSet {
return "", "", errInvalidMode(mode)
}
}
return id, mode, nil
}
// ParseMountRaw parses a raw volume spec (e.g. `-v /foo:/bar:shared`) into a
// structured spec. Once the raw spec is parsed it relies on `ParseMountSpec` to
// validate the spec and create a MountPoint
func ParseMountRaw(raw, volumeDriver string) (*MountPoint, error) {
arr, err := splitRawSpec(convertSlash(raw))
if err != nil {
return nil, err
}
var spec mounttypes.Mount
var mode string
switch len(arr) {
case 1:
// Just a destination path in the container
spec.Target = arr[0]
case 2:
if ValidMountMode(arr[1]) {
// Destination + Mode is not a valid volume - volumes
// cannot include a mode. e.g. /foo:rw
return nil, errInvalidSpec(raw)
}
// Host Source Path or Name + Destination
spec.Source = arr[0]
spec.Target = arr[1]
case 3:
// HostSourcePath+DestinationPath+Mode
spec.Source = arr[0]
spec.Target = arr[1]
mode = arr[2]
default:
return nil, errInvalidSpec(raw)
}
if !ValidMountMode(mode) {
return nil, errInvalidMode(mode)
}
if filepath.IsAbs(spec.Source) {
spec.Type = mounttypes.TypeBind
} else {
spec.Type = mounttypes.TypeVolume
}
spec.ReadOnly = !ReadWrite(mode)
// cannot assume that if a volume driver is passed in that we should set it
if volumeDriver != "" && spec.Type == mounttypes.TypeVolume {
spec.VolumeOptions = &mounttypes.VolumeOptions{
DriverConfig: &mounttypes.Driver{Name: volumeDriver},
}
}
if copyData, isSet := getCopyMode(mode); isSet {
if spec.VolumeOptions == nil {
spec.VolumeOptions = &mounttypes.VolumeOptions{}
}
spec.VolumeOptions.NoCopy = !copyData
}
if HasPropagation(mode) {
spec.BindOptions = &mounttypes.BindOptions{
Propagation: GetPropagation(mode),
}
}
mp, err := ParseMountSpec(spec, platformRawValidationOpts...)
if mp != nil {
mp.Mode = mode
}
if err != nil {
err = fmt.Errorf("%v: %v", errInvalidSpec(raw), err)
}
return mp, err
}
// ParseMountSpec reads a mount config, validates it, and configures a mountpoint from it.
func ParseMountSpec(cfg mounttypes.Mount, options ...func(*validateOpts)) (*MountPoint, error) {
if err := validateMountConfig(&cfg, options...); err != nil {
return nil, err
}
mp := &MountPoint{
RW: !cfg.ReadOnly,
Destination: clean(convertSlash(cfg.Target)),
Type: cfg.Type,
Spec: cfg,
}
switch cfg.Type {
case mounttypes.TypeVolume:
if cfg.Source == "" {
mp.Name = stringid.GenerateNonCryptoID()
} else {
mp.Name = cfg.Source
}
mp.CopyData = DefaultCopyMode
if cfg.VolumeOptions != nil {
if cfg.VolumeOptions.DriverConfig != nil {
mp.Driver = cfg.VolumeOptions.DriverConfig.Name
}
if cfg.VolumeOptions.NoCopy {
mp.CopyData = false
}
}
case mounttypes.TypeBind:
mp.Source = clean(convertSlash(cfg.Source))
if cfg.BindOptions != nil && len(cfg.BindOptions.Propagation) > 0 {
mp.Propagation = cfg.BindOptions.Propagation
} else {
// If user did not specify a propagation mode, get
// default propagation mode.
mp.Propagation = DefaultPropagationMode
}
case mounttypes.TypeTmpfs:
// NOP
}
return mp, nil
}
func errInvalidMode(mode string) error {
return fmt.Errorf("invalid mode: %v", mode)
}
func errInvalidSpec(spec string) error {
return fmt.Errorf("invalid volume specification: '%s'", spec)
}

23
vendor/github.com/docker/docker/volume/volume_copy.go generated vendored
View File

@ -1,23 +0,0 @@
package volume
import "strings"
// {<copy mode>=isEnabled}
var copyModes = map[string]bool{
"nocopy": false,
}
func copyModeExists(mode string) bool {
_, exists := copyModes[mode]
return exists
}
// GetCopyMode gets the copy mode from the mode string for mounts
func getCopyMode(mode string) (bool, bool) {
for _, o := range strings.Split(mode, ",") {
if isEnabled, exists := copyModes[o]; exists {
return isEnabled, true
}
}
return DefaultCopyMode, false
}

8
vendor/github.com/docker/docker/volume/volume_copy_unix.go generated vendored
View File

@ -1,8 +0,0 @@
// +build !windows
package volume
const (
// DefaultCopyMode is the copy mode used by default for normal/named volumes
DefaultCopyMode = true
)

6
vendor/github.com/docker/docker/volume/volume_copy_windows.go generated vendored
View File

@ -1,6 +0,0 @@
package volume
const (
// DefaultCopyMode is the copy mode used by default for normal/named volumes
DefaultCopyMode = false
)

56
vendor/github.com/docker/docker/volume/volume_linux.go generated vendored
View File

@ -1,56 +0,0 @@
// +build linux
package volume
import (
"fmt"
"strings"
mounttypes "github.com/docker/docker/api/types/mount"
)
// ConvertTmpfsOptions converts *mounttypes.TmpfsOptions to the raw option string
// for mount(2).
func ConvertTmpfsOptions(opt *mounttypes.TmpfsOptions, readOnly bool) (string, error) {
var rawOpts []string
if readOnly {
rawOpts = append(rawOpts, "ro")
}
if opt != nil && opt.Mode != 0 {
rawOpts = append(rawOpts, fmt.Sprintf("mode=%o", opt.Mode))
}
if opt != nil && opt.SizeBytes != 0 {
// calculate suffix here, making this linux specific, but that is
// okay, since API is that way anyways.
// we do this by finding the suffix that divides evenly into the
// value, returning the value itself, with no suffix, if it fails.
//
// For the most part, we don't enforce any semantic to this values.
// The operating system will usually align this and enforce minimum
// and maximums.
var (
size = opt.SizeBytes
suffix string
)
for _, r := range []struct {
suffix string
divisor int64
}{
{"g", 1 << 30},
{"m", 1 << 20},
{"k", 1 << 10},
} {
if size%r.divisor == 0 {
size = size / r.divisor
suffix = r.suffix
break
}
}
rawOpts = append(rawOpts, fmt.Sprintf("size=%d%s", size, suffix))
}
return strings.Join(rawOpts, ","), nil
}

47
vendor/github.com/docker/docker/volume/volume_propagation_linux.go generated vendored
View File

@ -1,47 +0,0 @@
// +build linux
package volume
import (
"strings"
mounttypes "github.com/docker/docker/api/types/mount"
)
// DefaultPropagationMode defines what propagation mode should be used by
// default if user has not specified one explicitly.
// propagation modes
const DefaultPropagationMode = mounttypes.PropagationRPrivate
var propagationModes = map[mounttypes.Propagation]bool{
mounttypes.PropagationPrivate: true,
mounttypes.PropagationRPrivate: true,
mounttypes.PropagationSlave: true,
mounttypes.PropagationRSlave: true,
mounttypes.PropagationShared: true,
mounttypes.PropagationRShared: true,
}
// GetPropagation extracts and returns the mount propagation mode. If there
// are no specifications, then by default it is "private".
func GetPropagation(mode string) mounttypes.Propagation {
for _, o := range strings.Split(mode, ",") {
prop := mounttypes.Propagation(o)
if propagationModes[prop] {
return prop
}
}
return DefaultPropagationMode
}
// HasPropagation checks if there is a valid propagation mode present in
// passed string. Returns true if a valid propagation mode specifier is
// present, false otherwise.
func HasPropagation(mode string) bool {
for _, o := range strings.Split(mode, ",") {
if propagationModes[mounttypes.Propagation(o)] {
return true
}
}
return false
}

24
vendor/github.com/docker/docker/volume/volume_propagation_unsupported.go generated vendored
View File

@ -1,24 +0,0 @@
// +build !linux
package volume
import mounttypes "github.com/docker/docker/api/types/mount"
// DefaultPropagationMode is used only in linux. In other cases it returns
// empty string.
const DefaultPropagationMode mounttypes.Propagation = ""
// propagation modes not supported on this platform.
var propagationModes = map[mounttypes.Propagation]bool{}
// GetPropagation is not supported. Return empty string.
func GetPropagation(mode string) mounttypes.Propagation {
return DefaultPropagationMode
}
// HasPropagation checks if there is a valid propagation mode present in
// passed string. Returns true if a valid propagation mode specifier is
// present, false otherwise.
func HasPropagation(mode string) bool {
return false
}

148
vendor/github.com/docker/docker/volume/volume_unix.go generated vendored
View File

@ -1,148 +0,0 @@
// +build linux freebsd darwin solaris
package volume
import (
"fmt"
"os"
"path/filepath"
"strings"
mounttypes "github.com/docker/docker/api/types/mount"
)
var platformRawValidationOpts = []func(o *validateOpts){
// need to make sure to not error out if the bind source does not exist on unix
// this is supported for historical reasons, the path will be automatically
// created later.
func(o *validateOpts) { o.skipBindSourceCheck = true },
}
// read-write modes
var rwModes = map[string]bool{
"rw": true,
"ro": true,
}
// label modes
var labelModes = map[string]bool{
"Z": true,
"z": true,
}
// consistency modes
var consistencyModes = map[mounttypes.Consistency]bool{
mounttypes.ConsistencyFull: true,
mounttypes.ConsistencyCached: true,
mounttypes.ConsistencyDelegated: true,
}
// BackwardsCompatible decides whether this mount point can be
// used in old versions of Docker or not.
// Only bind mounts and local volumes can be used in old versions of Docker.
func (m *MountPoint) BackwardsCompatible() bool {
return len(m.Source) > 0 || m.Driver == DefaultDriverName
}
// HasResource checks whether the given absolute path for a container is in
// this mount point. If the relative path starts with `../` then the resource
// is outside of this mount point, but we can't simply check for this prefix
// because it misses `..` which is also outside of the mount, so check both.
func (m *MountPoint) HasResource(absolutePath string) bool {
relPath, err := filepath.Rel(m.Destination, absolutePath)
return err == nil && relPath != ".." && !strings.HasPrefix(relPath, fmt.Sprintf("..%c", filepath.Separator))
}
// IsVolumeNameValid checks a volume name in a platform specific manner.
func IsVolumeNameValid(name string) (bool, error) {
return true, nil
}
// ValidMountMode will make sure the mount mode is valid.
// returns if it's a valid mount mode or not.
func ValidMountMode(mode string) bool {
if mode == "" {
return true
}
rwModeCount := 0
labelModeCount := 0
propagationModeCount := 0
copyModeCount := 0
consistencyModeCount := 0
for _, o := range strings.Split(mode, ",") {
switch {
case rwModes[o]:
rwModeCount++
case labelModes[o]:
labelModeCount++
case propagationModes[mounttypes.Propagation(o)]:
propagationModeCount++
case copyModeExists(o):
copyModeCount++
case consistencyModes[mounttypes.Consistency(o)]:
consistencyModeCount++
default:
return false
}
}
// Only one string for each mode is allowed.
if rwModeCount > 1 || labelModeCount > 1 || propagationModeCount > 1 || copyModeCount > 1 || consistencyModeCount > 1 {
return false
}
return true
}
// ReadWrite tells you if a mode string is a valid read-write mode or not.
// If there are no specifications w.r.t read write mode, then by default
// it returns true.
func ReadWrite(mode string) bool {
if !ValidMountMode(mode) {
return false
}
for _, o := range strings.Split(mode, ",") {
if o == "ro" {
return false
}
}
return true
}
func validateNotRoot(p string) error {
p = filepath.Clean(convertSlash(p))
if p == "/" {
return fmt.Errorf("invalid specification: destination can't be '/'")
}
return nil
}
func validateCopyMode(mode bool) error {
return nil
}
func convertSlash(p string) string {
return filepath.ToSlash(p)
}
func splitRawSpec(raw string) ([]string, error) {
if strings.Count(raw, ":") > 2 {
return nil, errInvalidSpec(raw)
}
arr := strings.SplitN(raw, ":", 3)
if arr[0] == "" {
return nil, errInvalidSpec(raw)
}
return arr, nil
}
func clean(p string) string {
return filepath.Clean(p)
}
func validateStat(fi os.FileInfo) error {
return nil
}

16
vendor/github.com/docker/docker/volume/volume_unsupported.go generated vendored
View File

@ -1,16 +0,0 @@
// +build !linux
package volume
import (
"fmt"
"runtime"
mounttypes "github.com/docker/docker/api/types/mount"
)
// ConvertTmpfsOptions converts *mounttypes.TmpfsOptions to the raw option string
// for mount(2).
func ConvertTmpfsOptions(opt *mounttypes.TmpfsOptions, readOnly bool) (string, error) {
return "", fmt.Errorf("%s does not support tmpfs", runtime.GOOS)
}

201
vendor/github.com/docker/docker/volume/volume_windows.go generated vendored
View File

@ -1,201 +0,0 @@
package volume
import (
"fmt"
"os"
"path/filepath"
"regexp"
"strings"
)
// read-write modes
var rwModes = map[string]bool{
"rw": true,
}
// read-only modes
var roModes = map[string]bool{
"ro": true,
}
var platformRawValidationOpts = []func(*validateOpts){
// filepath.IsAbs is weird on Windows:
// `c:` is not considered an absolute path
// `c:\` is considered an absolute path
// In any case, the regex matching below ensures absolute paths
// TODO: consider this a bug with filepath.IsAbs (?)
func(o *validateOpts) { o.skipAbsolutePathCheck = true },
}
const (
// Spec should be in the format [source:]destination[:mode]
//
// Examples: c:\foo bar:d:rw
// c:\foo:d:\bar
// myname:d:
// d:\
//
// Explanation of this regex! Thanks @thaJeztah on IRC and gist for help. See
// https://gist.github.com/thaJeztah/6185659e4978789fb2b2. A good place to
// test is https://regex-golang.appspot.com/assets/html/index.html
//
// Useful link for referencing named capturing groups:
// http://stackoverflow.com/questions/20750843/using-named-matches-from-go-regex
//
// There are three match groups: source, destination and mode.
//
// RXHostDir is the first option of a source
RXHostDir = `[a-z]:\\(?:[^\\/:*?"<>|\r\n]+\\?)*`
// RXName is the second option of a source
RXName = `[^\\/:*?"<>|\r\n]+`
// RXReservedNames are reserved names not possible on Windows
RXReservedNames = `(con)|(prn)|(nul)|(aux)|(com[1-9])|(lpt[1-9])`
// RXSource is the combined possibilities for a source
RXSource = `((?P<source>((` + RXHostDir + `)|(` + RXName + `))):)?`
// Source. Can be either a host directory, a name, or omitted:
// HostDir:
// - Essentially using the folder solution from
// https://www.safaribooksonline.com/library/view/regular-expressions-cookbook/9781449327453/ch08s18.html
// but adding case insensitivity.
// - Must be an absolute path such as c:\path
// - Can include spaces such as `c:\program files`
// - And then followed by a colon which is not in the capture group
// - And can be optional
// Name:
// - Must not contain invalid NTFS filename characters (https://msdn.microsoft.com/en-us/library/windows/desktop/aa365247(v=vs.85).aspx)
// - And then followed by a colon which is not in the capture group
// - And can be optional
// RXDestination is the regex expression for the mount destination
RXDestination = `(?P<destination>([a-z]):((?:\\[^\\/:*?"<>\r\n]+)*\\?))`
// Destination (aka container path):
// - Variation on hostdir but can be a drive followed by colon as well
// - If a path, must be absolute. Can include spaces
// - Drive cannot be c: (explicitly checked in code, not RegEx)
// RXMode is the regex expression for the mode of the mount
// Mode (optional):
// - Hopefully self explanatory in comparison to above regex's.
// - Colon is not in the capture group
RXMode = `(:(?P<mode>(?i)ro|rw))?`
)
// BackwardsCompatible decides whether this mount point can be
// used in old versions of Docker or not.
// Windows volumes are never backwards compatible.
func (m *MountPoint) BackwardsCompatible() bool {
return false
}
func splitRawSpec(raw string) ([]string, error) {
specExp := regexp.MustCompile(`^` + RXSource + RXDestination + RXMode + `$`)
match := specExp.FindStringSubmatch(strings.ToLower(raw))
// Must have something back
if len(match) == 0 {
return nil, errInvalidSpec(raw)
}
var split []string
matchgroups := make(map[string]string)
// Pull out the sub expressions from the named capture groups
for i, name := range specExp.SubexpNames() {
matchgroups[name] = strings.ToLower(match[i])
}
if source, exists := matchgroups["source"]; exists {
if source != "" {
split = append(split, source)
}
}
if destination, exists := matchgroups["destination"]; exists {
if destination != "" {
split = append(split, destination)
}
}
if mode, exists := matchgroups["mode"]; exists {
if mode != "" {
split = append(split, mode)
}
}
// Fix #26329. If the destination appears to be a file, and the source is null,
// it may be because we've fallen through the possible naming regex and hit a
// situation where the user intention was to map a file into a container through
// a local volume, but this is not supported by the platform.
if matchgroups["source"] == "" && matchgroups["destination"] != "" {
validName, err := IsVolumeNameValid(matchgroups["destination"])
if err != nil {
return nil, err
}
if !validName {
if fi, err := os.Stat(matchgroups["destination"]); err == nil {
if !fi.IsDir() {
return nil, fmt.Errorf("file '%s' cannot be mapped. Only directories can be mapped on this platform", matchgroups["destination"])
}
}
}
}
return split, nil
}
// IsVolumeNameValid checks a volume name in a platform specific manner.
func IsVolumeNameValid(name string) (bool, error) {
nameExp := regexp.MustCompile(`^` + RXName + `$`)
if !nameExp.MatchString(name) {
return false, nil
}
nameExp = regexp.MustCompile(`^` + RXReservedNames + `$`)
if nameExp.MatchString(name) {
return false, fmt.Errorf("volume name %q cannot be a reserved word for Windows filenames", name)
}
return true, nil
}
// ValidMountMode will make sure the mount mode is valid.
// returns if it's a valid mount mode or not.
func ValidMountMode(mode string) bool {
if mode == "" {
return true
}
return roModes[strings.ToLower(mode)] || rwModes[strings.ToLower(mode)]
}
// ReadWrite tells you if a mode string is a valid read-write mode or not.
func ReadWrite(mode string) bool {
return rwModes[strings.ToLower(mode)] || mode == ""
}
func validateNotRoot(p string) error {
p = strings.ToLower(convertSlash(p))
if p == "c:" || p == `c:\` {
return fmt.Errorf("destination path cannot be `c:` or `c:\\`: %v", p)
}
return nil
}
func validateCopyMode(mode bool) error {
if mode {
return fmt.Errorf("Windows does not support copying image path content")
}
return nil
}
func convertSlash(p string) string {
return filepath.FromSlash(p)
}
func clean(p string) string {
if match, _ := regexp.MatchString("^[a-z]:$", p); match {
return p
}
return filepath.Clean(p)
}
func validateStat(fi os.FileInfo) error {
if !fi.IsDir() {
return fmt.Errorf("source path must be a directory")
}
return nil
}

64
vendor/github.com/opencontainers/runc/libcontainer/cgroups/cgroups.go generated vendored
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@ -1,64 +0,0 @@
// +build linux
package cgroups
import (
"fmt"
"github.com/opencontainers/runc/libcontainer/configs"
)
type Manager interface {
// Applies cgroup configuration to the process with the specified pid
Apply(pid int) error
// Returns the PIDs inside the cgroup set
GetPids() ([]int, error)
// Returns the PIDs inside the cgroup set & all sub-cgroups
GetAllPids() ([]int, error)
// Returns statistics for the cgroup set
GetStats() (*Stats, error)
// Toggles the freezer cgroup according with specified state
Freeze(state configs.FreezerState) error
// Destroys the cgroup set
Destroy() error
// NewCgroupManager() and LoadCgroupManager() require following attributes:
// Paths map[string]string
// Cgroups *cgroups.Cgroup
// Paths maps cgroup subsystem to path at which it is mounted.
// Cgroups specifies specific cgroup settings for the various subsystems
// Returns cgroup paths to save in a state file and to be able to
// restore the object later.
GetPaths() map[string]string
// Sets the cgroup as configured.
Set(container *configs.Config) error
}
type NotFoundError struct {
Subsystem string
}
func (e *NotFoundError) Error() string {
return fmt.Sprintf("mountpoint for %s not found", e.Subsystem)
}
func NewNotFoundError(sub string) error {
return &NotFoundError{
Subsystem: sub,
}
}
func IsNotFound(err error) bool {
if err == nil {
return false
}
_, ok := err.(*NotFoundError)
return ok
}

3
vendor/github.com/opencontainers/runc/libcontainer/cgroups/cgroups_unsupported.go generated vendored
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@ -1,3 +0,0 @@
// +build !linux
package cgroups

106
vendor/github.com/opencontainers/runc/libcontainer/cgroups/stats.go generated vendored
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@ -1,106 +0,0 @@
// +build linux
package cgroups
type ThrottlingData struct {
// Number of periods with throttling active
Periods uint64 `json:"periods,omitempty"`
// Number of periods when the container hit its throttling limit.
ThrottledPeriods uint64 `json:"throttled_periods,omitempty"`
// Aggregate time the container was throttled for in nanoseconds.
ThrottledTime uint64 `json:"throttled_time,omitempty"`
}
// CpuUsage denotes the usage of a CPU.
// All CPU stats are aggregate since container inception.
type CpuUsage struct {
// Total CPU time consumed.
// Units: nanoseconds.
TotalUsage uint64 `json:"total_usage,omitempty"`
// Total CPU time consumed per core.
// Units: nanoseconds.
PercpuUsage []uint64 `json:"percpu_usage,omitempty"`
// Time spent by tasks of the cgroup in kernel mode.
// Units: nanoseconds.
UsageInKernelmode uint64 `json:"usage_in_kernelmode"`
// Time spent by tasks of the cgroup in user mode.
// Units: nanoseconds.
UsageInUsermode uint64 `json:"usage_in_usermode"`
}
type CpuStats struct {
CpuUsage CpuUsage `json:"cpu_usage,omitempty"`
ThrottlingData ThrottlingData `json:"throttling_data,omitempty"`
}
type MemoryData struct {
Usage uint64 `json:"usage,omitempty"`
MaxUsage uint64 `json:"max_usage,omitempty"`
Failcnt uint64 `json:"failcnt"`
Limit uint64 `json:"limit"`
}
type MemoryStats struct {
// memory used for cache
Cache uint64 `json:"cache,omitempty"`
// usage of memory
Usage MemoryData `json:"usage,omitempty"`
// usage of memory + swap
SwapUsage MemoryData `json:"swap_usage,omitempty"`
// usage of kernel memory
KernelUsage MemoryData `json:"kernel_usage,omitempty"`
// usage of kernel TCP memory
KernelTCPUsage MemoryData `json:"kernel_tcp_usage,omitempty"`
Stats map[string]uint64 `json:"stats,omitempty"`
}
type PidsStats struct {
// number of pids in the cgroup
Current uint64 `json:"current,omitempty"`
// active pids hard limit
Limit uint64 `json:"limit,omitempty"`
}
type BlkioStatEntry struct {
Major uint64 `json:"major,omitempty"`
Minor uint64 `json:"minor,omitempty"`
Op string `json:"op,omitempty"`
Value uint64 `json:"value,omitempty"`
}
type BlkioStats struct {
// number of bytes tranferred to and from the block device
IoServiceBytesRecursive []BlkioStatEntry `json:"io_service_bytes_recursive,omitempty"`
IoServicedRecursive []BlkioStatEntry `json:"io_serviced_recursive,omitempty"`
IoQueuedRecursive []BlkioStatEntry `json:"io_queue_recursive,omitempty"`
IoServiceTimeRecursive []BlkioStatEntry `json:"io_service_time_recursive,omitempty"`
IoWaitTimeRecursive []BlkioStatEntry `json:"io_wait_time_recursive,omitempty"`
IoMergedRecursive []BlkioStatEntry `json:"io_merged_recursive,omitempty"`
IoTimeRecursive []BlkioStatEntry `json:"io_time_recursive,omitempty"`
SectorsRecursive []BlkioStatEntry `json:"sectors_recursive,omitempty"`
}
type HugetlbStats struct {
// current res_counter usage for hugetlb
Usage uint64 `json:"usage,omitempty"`
// maximum usage ever recorded.
MaxUsage uint64 `json:"max_usage,omitempty"`
// number of times hugetlb usage allocation failure.
Failcnt uint64 `json:"failcnt"`
}
type Stats struct {
CpuStats CpuStats `json:"cpu_stats,omitempty"`
MemoryStats MemoryStats `json:"memory_stats,omitempty"`
PidsStats PidsStats `json:"pids_stats,omitempty"`
BlkioStats BlkioStats `json:"blkio_stats,omitempty"`
// the map is in the format "size of hugepage: stats of the hugepage"
HugetlbStats map[string]HugetlbStats `json:"hugetlb_stats,omitempty"`
}
func NewStats() *Stats {
memoryStats := MemoryStats{Stats: make(map[string]uint64)}
hugetlbStats := make(map[string]HugetlbStats)
return &Stats{MemoryStats: memoryStats, HugetlbStats: hugetlbStats}
}

436
vendor/github.com/opencontainers/runc/libcontainer/cgroups/utils.go generated vendored
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@ -1,436 +0,0 @@
// +build linux
package cgroups
import (
"bufio"
"fmt"
"io"
"io/ioutil"
"os"
"path/filepath"
"strconv"
"strings"
"time"
"github.com/docker/go-units"
)
const (
cgroupNamePrefix = "name="
CgroupProcesses = "cgroup.procs"
)
// https://www.kernel.org/doc/Documentation/cgroup-v1/cgroups.txt
func FindCgroupMountpoint(subsystem string) (string, error) {
// We are not using mount.GetMounts() because it's super-inefficient,
// parsing it directly sped up x10 times because of not using Sscanf.
// It was one of two major performance drawbacks in container start.
if !isSubsystemAvailable(subsystem) {
return "", NewNotFoundError(subsystem)
}
f, err := os.Open("/proc/self/mountinfo")
if err != nil {
return "", err
}
defer f.Close()
scanner := bufio.NewScanner(f)
for scanner.Scan() {
txt := scanner.Text()
fields := strings.Split(txt, " ")
for _, opt := range strings.Split(fields[len(fields)-1], ",") {
if opt == subsystem {
return fields[4], nil
}
}
}
if err := scanner.Err(); err != nil {
return "", err
}
return "", NewNotFoundError(subsystem)
}
func FindCgroupMountpointAndRoot(subsystem string) (string, string, error) {
if !isSubsystemAvailable(subsystem) {
return "", "", NewNotFoundError(subsystem)
}
f, err := os.Open("/proc/self/mountinfo")
if err != nil {
return "", "", err
}
defer f.Close()
scanner := bufio.NewScanner(f)
for scanner.Scan() {
txt := scanner.Text()
fields := strings.Split(txt, " ")
for _, opt := range strings.Split(fields[len(fields)-1], ",") {
if opt == subsystem {
return fields[4], fields[3], nil
}
}
}
if err := scanner.Err(); err != nil {
return "", "", err
}
return "", "", NewNotFoundError(subsystem)
}
func isSubsystemAvailable(subsystem string) bool {
cgroups, err := ParseCgroupFile("/proc/self/cgroup")
if err != nil {
return false
}
_, avail := cgroups[subsystem]
return avail
}
func FindCgroupMountpointDir() (string, error) {
f, err := os.Open("/proc/self/mountinfo")
if err != nil {
return "", err
}
defer f.Close()
scanner := bufio.NewScanner(f)
for scanner.Scan() {
text := scanner.Text()
fields := strings.Split(text, " ")
// Safe as mountinfo encodes mountpoints with spaces as \040.
index := strings.Index(text, " - ")
postSeparatorFields := strings.Fields(text[index+3:])
numPostFields := len(postSeparatorFields)
// This is an error as we can't detect if the mount is for "cgroup"
if numPostFields == 0 {
return "", fmt.Errorf("Found no fields post '-' in %q", text)
}
if postSeparatorFields[0] == "cgroup" {
// Check that the mount is properly formated.
if numPostFields < 3 {
return "", fmt.Errorf("Error found less than 3 fields post '-' in %q", text)
}
return filepath.Dir(fields[4]), nil
}
}
if err := scanner.Err(); err != nil {
return "", err
}
return "", NewNotFoundError("cgroup")
}
type Mount struct {
Mountpoint string
Root string
Subsystems []string
}
func (m Mount) GetThisCgroupDir(cgroups map[string]string) (string, error) {
if len(m.Subsystems) == 0 {
return "", fmt.Errorf("no subsystem for mount")
}
return getControllerPath(m.Subsystems[0], cgroups)
}
func getCgroupMountsHelper(ss map[string]bool, mi io.Reader, all bool) ([]Mount, error) {
res := make([]Mount, 0, len(ss))
scanner := bufio.NewScanner(mi)
numFound := 0
for scanner.Scan() && numFound < len(ss) {
txt := scanner.Text()
sepIdx := strings.Index(txt, " - ")
if sepIdx == -1 {
return nil, fmt.Errorf("invalid mountinfo format")
}
if txt[sepIdx+3:sepIdx+10] == "cgroup2" || txt[sepIdx+3:sepIdx+9] != "cgroup" {
continue
}
fields := strings.Split(txt, " ")
m := Mount{
Mountpoint: fields[4],
Root: fields[3],
}
for _, opt := range strings.Split(fields[len(fields)-1], ",") {
if !ss[opt] {
continue
}
if strings.HasPrefix(opt, cgroupNamePrefix) {
m.Subsystems = append(m.Subsystems, opt[len(cgroupNamePrefix):])
} else {
m.Subsystems = append(m.Subsystems, opt)
}
if !all {
numFound++
}
}
res = append(res, m)
}
if err := scanner.Err(); err != nil {
return nil, err
}
return res, nil
}
// GetCgroupMounts returns the mounts for the cgroup subsystems.
// all indicates whether to return just the first instance or all the mounts.
func GetCgroupMounts(all bool) ([]Mount, error) {
f, err := os.Open("/proc/self/mountinfo")
if err != nil {
return nil, err
}
defer f.Close()
allSubsystems, err := ParseCgroupFile("/proc/self/cgroup")
if err != nil {
return nil, err
}
allMap := make(map[string]bool)
for s := range allSubsystems {
allMap[s] = true
}
return getCgroupMountsHelper(allMap, f, all)
}
// GetAllSubsystems returns all the cgroup subsystems supported by the kernel
func GetAllSubsystems() ([]string, error) {
f, err := os.Open("/proc/cgroups")
if err != nil {
return nil, err
}
defer f.Close()
subsystems := []string{}
s := bufio.NewScanner(f)
for s.Scan() {
if err := s.Err(); err != nil {
return nil, err
}
text := s.Text()
if text[0] != '#' {
parts := strings.Fields(text)
if len(parts) >= 4 && parts[3] != "0" {
subsystems = append(subsystems, parts[0])
}
}
}
return subsystems, nil
}
// GetThisCgroupDir returns the relative path to the cgroup docker is running in.
func GetThisCgroupDir(subsystem string) (string, error) {
cgroups, err := ParseCgroupFile("/proc/self/cgroup")
if err != nil {
return "", err
}
return getControllerPath(subsystem, cgroups)
}
func GetInitCgroupDir(subsystem string) (string, error) {
cgroups, err := ParseCgroupFile("/proc/1/cgroup")
if err != nil {
return "", err
}
return getControllerPath(subsystem, cgroups)
}
func readProcsFile(dir string) ([]int, error) {
f, err := os.Open(filepath.Join(dir, CgroupProcesses))
if err != nil {
return nil, err
}
defer f.Close()
var (
s = bufio.NewScanner(f)
out = []int{}
)
for s.Scan() {
if t := s.Text(); t != "" {
pid, err := strconv.Atoi(t)
if err != nil {
return nil, err
}
out = append(out, pid)
}
}
return out, nil
}
// ParseCgroupFile parses the given cgroup file, typically from
// /proc/<pid>/cgroup, into a map of subgroups to cgroup names.
func ParseCgroupFile(path string) (map[string]string, error) {
f, err := os.Open(path)
if err != nil {
return nil, err
}
defer f.Close()
return parseCgroupFromReader(f)
}
// helper function for ParseCgroupFile to make testing easier
func parseCgroupFromReader(r io.Reader) (map[string]string, error) {
s := bufio.NewScanner(r)
cgroups := make(map[string]string)
for s.Scan() {
if err := s.Err(); err != nil {
return nil, err
}
text := s.Text()
// from cgroups(7):
// /proc/[pid]/cgroup
// ...
// For each cgroup hierarchy ... there is one entry
// containing three colon-separated fields of the form:
// hierarchy-ID:subsystem-list:cgroup-path
parts := strings.SplitN(text, ":", 3)
if len(parts) < 3 {
return nil, fmt.Errorf("invalid cgroup entry: must contain at least two colons: %v", text)
}
for _, subs := range strings.Split(parts[1], ",") {
cgroups[subs] = parts[2]
}
}
return cgroups, nil
}
func getControllerPath(subsystem string, cgroups map[string]string) (string, error) {
if p, ok := cgroups[subsystem]; ok {
return p, nil
}
if p, ok := cgroups[cgroupNamePrefix+subsystem]; ok {
return p, nil
}
return "", NewNotFoundError(subsystem)
}
func PathExists(path string) bool {
if _, err := os.Stat(path); err != nil {
return false
}
return true
}
func EnterPid(cgroupPaths map[string]string, pid int) error {
for _, path := range cgroupPaths {
if PathExists(path) {
if err := WriteCgroupProc(path, pid); err != nil {
return err
}
}
}
return nil
}
// RemovePaths iterates over the provided paths removing them.
// We trying to remove all paths five times with increasing delay between tries.
// If after all there are not removed cgroups - appropriate error will be
// returned.
func RemovePaths(paths map[string]string) (err error) {
delay := 10 * time.Millisecond
for i := 0; i < 5; i++ {
if i != 0 {
time.Sleep(delay)
delay *= 2
}
for s, p := range paths {
os.RemoveAll(p)
// TODO: here probably should be logging
_, err := os.Stat(p)
// We need this strange way of checking cgroups existence because
// RemoveAll almost always returns error, even on already removed
// cgroups
if os.IsNotExist(err) {
delete(paths, s)
}
}
if len(paths) == 0 {
return nil
}
}
return fmt.Errorf("Failed to remove paths: %v", paths)
}
func GetHugePageSize() ([]string, error) {
var pageSizes []string
sizeList := []string{"B", "kB", "MB", "GB", "TB", "PB"}
files, err := ioutil.ReadDir("/sys/kernel/mm/hugepages")
if err != nil {
return pageSizes, err
}
for _, st := range files {
nameArray := strings.Split(st.Name(), "-")
pageSize, err := units.RAMInBytes(nameArray[1])
if err != nil {
return []string{}, err
}
sizeString := units.CustomSize("%g%s", float64(pageSize), 1024.0, sizeList)
pageSizes = append(pageSizes, sizeString)
}
return pageSizes, nil
}
// GetPids returns all pids, that were added to cgroup at path.
func GetPids(path string) ([]int, error) {
return readProcsFile(path)
}
// GetAllPids returns all pids, that were added to cgroup at path and to all its
// subcgroups.
func GetAllPids(path string) ([]int, error) {
var pids []int
// collect pids from all sub-cgroups
err := filepath.Walk(path, func(p string, info os.FileInfo, iErr error) error {
dir, file := filepath.Split(p)
if file != CgroupProcesses {
return nil
}
if iErr != nil {
return iErr
}
cPids, err := readProcsFile(dir)
if err != nil {
return err
}
pids = append(pids, cPids...)
return nil
})
return pids, err
}
// WriteCgroupProc writes the specified pid into the cgroup's cgroup.procs file
func WriteCgroupProc(dir string, pid int) error {
// Normally dir should not be empty, one case is that cgroup subsystem
// is not mounted, we will get empty dir, and we want it fail here.
if dir == "" {
return fmt.Errorf("no such directory for %s", CgroupProcesses)
}
// Dont attach any pid to the cgroup if -1 is specified as a pid
if pid != -1 {
if err := ioutil.WriteFile(filepath.Join(dir, CgroupProcesses), []byte(strconv.Itoa(pid)), 0700); err != nil {
return fmt.Errorf("failed to write %v to %v: %v", pid, CgroupProcesses, err)
}
}
return nil
}

61
vendor/github.com/opencontainers/runc/libcontainer/configs/blkio_device.go generated vendored
View File

@ -1,61 +0,0 @@
package configs
import "fmt"
// blockIODevice holds major:minor format supported in blkio cgroup
type blockIODevice struct {
// Major is the device's major number
Major int64 `json:"major"`
// Minor is the device's minor number
Minor int64 `json:"minor"`
}
// WeightDevice struct holds a `major:minor weight`|`major:minor leaf_weight` pair
type WeightDevice struct {
blockIODevice
// Weight is the bandwidth rate for the device, range is from 10 to 1000
Weight uint16 `json:"weight"`
// LeafWeight is the bandwidth rate for the device while competing with the cgroup's child cgroups, range is from 10 to 1000, cfq scheduler only
LeafWeight uint16 `json:"leafWeight"`
}
// NewWeightDevice returns a configured WeightDevice pointer
func NewWeightDevice(major, minor int64, weight, leafWeight uint16) *WeightDevice {
wd := &WeightDevice{}
wd.Major = major
wd.Minor = minor
wd.Weight = weight
wd.LeafWeight = leafWeight
return wd
}
// WeightString formats the struct to be writable to the cgroup specific file
func (wd *WeightDevice) WeightString() string {
return fmt.Sprintf("%d:%d %d", wd.Major, wd.Minor, wd.Weight)
}
// LeafWeightString formats the struct to be writable to the cgroup specific file
func (wd *WeightDevice) LeafWeightString() string {
return fmt.Sprintf("%d:%d %d", wd.Major, wd.Minor, wd.LeafWeight)
}
// ThrottleDevice struct holds a `major:minor rate_per_second` pair
type ThrottleDevice struct {
blockIODevice
// Rate is the IO rate limit per cgroup per device
Rate uint64 `json:"rate"`
}
// NewThrottleDevice returns a configured ThrottleDevice pointer
func NewThrottleDevice(major, minor int64, rate uint64) *ThrottleDevice {
td := &ThrottleDevice{}
td.Major = major
td.Minor = minor
td.Rate = rate
return td
}
// String formats the struct to be writable to the cgroup specific file
func (td *ThrottleDevice) String() string {
return fmt.Sprintf("%d:%d %d", td.Major, td.Minor, td.Rate)
}

124
vendor/github.com/opencontainers/runc/libcontainer/configs/cgroup_unix.go generated vendored
View File

@ -1,124 +0,0 @@
// +build linux freebsd
package configs
type FreezerState string
const (
Undefined FreezerState = ""
Frozen FreezerState = "FROZEN"
Thawed FreezerState = "THAWED"
)
type Cgroup struct {
// Deprecated, use Path instead
Name string `json:"name,omitempty"`
// name of parent of cgroup or slice
// Deprecated, use Path instead
Parent string `json:"parent,omitempty"`
// Path specifies the path to cgroups that are created and/or joined by the container.
// The path is assumed to be relative to the host system cgroup mountpoint.
Path string `json:"path"`
// ScopePrefix describes prefix for the scope name
ScopePrefix string `json:"scope_prefix"`
// Paths represent the absolute cgroups paths to join.
// This takes precedence over Path.
Paths map[string]string
// Resources contains various cgroups settings to apply
*Resources
}
type Resources struct {
// If this is true allow access to any kind of device within the container. If false, allow access only to devices explicitly listed in the allowed_devices list.
// Deprecated
AllowAllDevices *bool `json:"allow_all_devices,omitempty"`
// Deprecated
AllowedDevices []*Device `json:"allowed_devices,omitempty"`
// Deprecated
DeniedDevices []*Device `json:"denied_devices,omitempty"`
Devices []*Device `json:"devices"`
// Memory limit (in bytes)
Memory int64 `json:"memory"`
// Memory reservation or soft_limit (in bytes)
MemoryReservation int64 `json:"memory_reservation"`
// Total memory usage (memory + swap); set `-1` to enable unlimited swap
MemorySwap int64 `json:"memory_swap"`
// Kernel memory limit (in bytes)
KernelMemory int64 `json:"kernel_memory"`
// Kernel memory limit for TCP use (in bytes)
KernelMemoryTCP int64 `json:"kernel_memory_tcp"`
// CPU shares (relative weight vs. other containers)
CpuShares int64 `json:"cpu_shares"`
// CPU hardcap limit (in usecs). Allowed cpu time in a given period.
CpuQuota int64 `json:"cpu_quota"`
// CPU period to be used for hardcapping (in usecs). 0 to use system default.
CpuPeriod int64 `json:"cpu_period"`
// How many time CPU will use in realtime scheduling (in usecs).
CpuRtRuntime int64 `json:"cpu_rt_quota"`
// CPU period to be used for realtime scheduling (in usecs).
CpuRtPeriod int64 `json:"cpu_rt_period"`
// CPU to use
CpusetCpus string `json:"cpuset_cpus"`
// MEM to use
CpusetMems string `json:"cpuset_mems"`
// Process limit; set <= `0' to disable limit.
PidsLimit int64 `json:"pids_limit"`
// Specifies per cgroup weight, range is from 10 to 1000.
BlkioWeight uint16 `json:"blkio_weight"`
// Specifies tasks' weight in the given cgroup while competing with the cgroup's child cgroups, range is from 10 to 1000, cfq scheduler only
BlkioLeafWeight uint16 `json:"blkio_leaf_weight"`
// Weight per cgroup per device, can override BlkioWeight.
BlkioWeightDevice []*WeightDevice `json:"blkio_weight_device"`
// IO read rate limit per cgroup per device, bytes per second.
BlkioThrottleReadBpsDevice []*ThrottleDevice `json:"blkio_throttle_read_bps_device"`
// IO write rate limit per cgroup per device, bytes per second.
BlkioThrottleWriteBpsDevice []*ThrottleDevice `json:"blkio_throttle_write_bps_device"`
// IO read rate limit per cgroup per device, IO per second.
BlkioThrottleReadIOPSDevice []*ThrottleDevice `json:"blkio_throttle_read_iops_device"`
// IO write rate limit per cgroup per device, IO per second.
BlkioThrottleWriteIOPSDevice []*ThrottleDevice `json:"blkio_throttle_write_iops_device"`
// set the freeze value for the process
Freezer FreezerState `json:"freezer"`
// Hugetlb limit (in bytes)
HugetlbLimit []*HugepageLimit `json:"hugetlb_limit"`
// Whether to disable OOM Killer
OomKillDisable bool `json:"oom_kill_disable"`
// Tuning swappiness behaviour per cgroup
MemorySwappiness *int64 `json:"memory_swappiness"`
// Set priority of network traffic for container
NetPrioIfpriomap []*IfPrioMap `json:"net_prio_ifpriomap"`
// Set class identifier for container's network packets
NetClsClassid uint32 `json:"net_cls_classid_u"`
}

6
vendor/github.com/opencontainers/runc/libcontainer/configs/cgroup_unsupported.go generated vendored
View File

@ -1,6 +0,0 @@
// +build !windows,!linux,!freebsd
package configs
type Cgroup struct {
}

6
vendor/github.com/opencontainers/runc/libcontainer/configs/cgroup_windows.go generated vendored
View File

@ -1,6 +0,0 @@
package configs
// TODO Windows: This can ultimately be entirely factored out on Windows as
// cgroups are a Unix-specific construct.
type Cgroup struct {
}

332
vendor/github.com/opencontainers/runc/libcontainer/configs/config.go generated vendored
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@ -1,332 +0,0 @@
package configs
import (
"bytes"
"encoding/json"
"fmt"
"os/exec"
"time"
"github.com/Sirupsen/logrus"
)
type Rlimit struct {
Type int `json:"type"`
Hard uint64 `json:"hard"`
Soft uint64 `json:"soft"`
}
// IDMap represents UID/GID Mappings for User Namespaces.
type IDMap struct {
ContainerID int `json:"container_id"`
HostID int `json:"host_id"`
Size int `json:"size"`
}
// Seccomp represents syscall restrictions
// By default, only the native architecture of the kernel is allowed to be used
// for syscalls. Additional architectures can be added by specifying them in
// Architectures.
type Seccomp struct {
DefaultAction Action `json:"default_action"`
Architectures []string `json:"architectures"`
Syscalls []*Syscall `json:"syscalls"`
}
// Action is taken upon rule match in Seccomp
type Action int
const (
Kill Action = iota + 1
Errno
Trap
Allow
Trace
)
// Operator is a comparison operator to be used when matching syscall arguments in Seccomp
type Operator int
const (
EqualTo Operator = iota + 1
NotEqualTo
GreaterThan
GreaterThanOrEqualTo
LessThan
LessThanOrEqualTo
MaskEqualTo
)
// Arg is a rule to match a specific syscall argument in Seccomp
type Arg struct {
Index uint `json:"index"`
Value uint64 `json:"value"`
ValueTwo uint64 `json:"value_two"`
Op Operator `json:"op"`
}
// Syscall is a rule to match a syscall in Seccomp
type Syscall struct {
Name string `json:"name"`
Action Action `json:"action"`
Args []*Arg `json:"args"`
}
// TODO Windows. Many of these fields should be factored out into those parts
// which are common across platforms, and those which are platform specific.
// Config defines configuration options for executing a process inside a contained environment.
type Config struct {
// NoPivotRoot will use MS_MOVE and a chroot to jail the process into the container's rootfs
// This is a common option when the container is running in ramdisk
NoPivotRoot bool `json:"no_pivot_root"`
// ParentDeathSignal specifies the signal that is sent to the container's process in the case
// that the parent process dies.
ParentDeathSignal int `json:"parent_death_signal"`
// Path to a directory containing the container's root filesystem.
Rootfs string `json:"rootfs"`
// Readonlyfs will remount the container's rootfs as readonly where only externally mounted
// bind mounts are writtable.
Readonlyfs bool `json:"readonlyfs"`
// Specifies the mount propagation flags to be applied to /.
RootPropagation int `json:"rootPropagation"`
// Mounts specify additional source and destination paths that will be mounted inside the container's
// rootfs and mount namespace if specified
Mounts []*Mount `json:"mounts"`
// The device nodes that should be automatically created within the container upon container start. Note, make sure that the node is marked as allowed in the cgroup as well!
Devices []*Device `json:"devices"`
MountLabel string `json:"mount_label"`
// Hostname optionally sets the container's hostname if provided
Hostname string `json:"hostname"`
// Namespaces specifies the container's namespaces that it should setup when cloning the init process
// If a namespace is not provided that namespace is shared from the container's parent process
Namespaces Namespaces `json:"namespaces"`
// Capabilities specify the capabilities to keep when executing the process inside the container
// All capbilities not specified will be dropped from the processes capability mask
Capabilities []string `json:"capabilities"`
// Networks specifies the container's network setup to be created
Networks []*Network `json:"networks"`
// Routes can be specified to create entries in the route table as the container is started
Routes []*Route `json:"routes"`
// Cgroups specifies specific cgroup settings for the various subsystems that the container is
// placed into to limit the resources the container has available
Cgroups *Cgroup `json:"cgroups"`
// AppArmorProfile specifies the profile to apply to the process running in the container and is
// change at the time the process is execed
AppArmorProfile string `json:"apparmor_profile,omitempty"`
// ProcessLabel specifies the label to apply to the process running in the container. It is
// commonly used by selinux
ProcessLabel string `json:"process_label,omitempty"`
// Rlimits specifies the resource limits, such as max open files, to set in the container
// If Rlimits are not set, the container will inherit rlimits from the parent process
Rlimits []Rlimit `json:"rlimits,omitempty"`
// OomScoreAdj specifies the adjustment to be made by the kernel when calculating oom scores
// for a process. Valid values are between the range [-1000, '1000'], where processes with
// higher scores are preferred for being killed.
// More information about kernel oom score calculation here: https://lwn.net/Articles/317814/
OomScoreAdj int `json:"oom_score_adj"`
// UidMappings is an array of User ID mappings for User Namespaces
UidMappings []IDMap `json:"uid_mappings"`
// GidMappings is an array of Group ID mappings for User Namespaces
GidMappings []IDMap `json:"gid_mappings"`
// MaskPaths specifies paths within the container's rootfs to mask over with a bind
// mount pointing to /dev/null as to prevent reads of the file.
MaskPaths []string `json:"mask_paths"`
// ReadonlyPaths specifies paths within the container's rootfs to remount as read-only
// so that these files prevent any writes.
ReadonlyPaths []string `json:"readonly_paths"`
// Sysctl is a map of properties and their values. It is the equivalent of using
// sysctl -w my.property.name value in Linux.
Sysctl map[string]string `json:"sysctl"`
// Seccomp allows actions to be taken whenever a syscall is made within the container.
// A number of rules are given, each having an action to be taken if a syscall matches it.
// A default action to be taken if no rules match is also given.
Seccomp *Seccomp `json:"seccomp"`
// NoNewPrivileges controls whether processes in the container can gain additional privileges.
NoNewPrivileges bool `json:"no_new_privileges,omitempty"`
// Hooks are a collection of actions to perform at various container lifecycle events.
// CommandHooks are serialized to JSON, but other hooks are not.
Hooks *Hooks
// Version is the version of opencontainer specification that is supported.
Version string `json:"version"`
// Labels are user defined metadata that is stored in the config and populated on the state
Labels []string `json:"labels"`
// NoNewKeyring will not allocated a new session keyring for the container. It will use the
// callers keyring in this case.
NoNewKeyring bool `json:"no_new_keyring"`
}
type Hooks struct {
// Prestart commands are executed after the container namespaces are created,
// but before the user supplied command is executed from init.
Prestart []Hook
// Poststart commands are executed after the container init process starts.
Poststart []Hook
// Poststop commands are executed after the container init process exits.
Poststop []Hook
}
func (hooks *Hooks) UnmarshalJSON(b []byte) error {
var state struct {
Prestart []CommandHook
Poststart []CommandHook
Poststop []CommandHook
}
if err := json.Unmarshal(b, &state); err != nil {
return err
}
deserialize := func(shooks []CommandHook) (hooks []Hook) {
for _, shook := range shooks {
hooks = append(hooks, shook)
}
return hooks
}
hooks.Prestart = deserialize(state.Prestart)
hooks.Poststart = deserialize(state.Poststart)
hooks.Poststop = deserialize(state.Poststop)
return nil
}
func (hooks Hooks) MarshalJSON() ([]byte, error) {
serialize := func(hooks []Hook) (serializableHooks []CommandHook) {
for _, hook := range hooks {
switch chook := hook.(type) {
case CommandHook:
serializableHooks = append(serializableHooks, chook)
default:
logrus.Warnf("cannot serialize hook of type %T, skipping", hook)
}
}
return serializableHooks
}
return json.Marshal(map[string]interface{}{
"prestart": serialize(hooks.Prestart),
"poststart": serialize(hooks.Poststart),
"poststop": serialize(hooks.Poststop),
})
}
// HookState is the payload provided to a hook on execution.
type HookState struct {
Version string `json:"ociVersion"`
ID string `json:"id"`
Pid int `json:"pid"`
Root string `json:"root"`
BundlePath string `json:"bundlePath"`
}
type Hook interface {
// Run executes the hook with the provided state.
Run(HookState) error
}
// NewFunctionHook will call the provided function when the hook is run.
func NewFunctionHook(f func(HookState) error) FuncHook {
return FuncHook{
run: f,
}
}
type FuncHook struct {
run func(HookState) error
}
func (f FuncHook) Run(s HookState) error {
return f.run(s)
}
type Command struct {
Path string `json:"path"`
Args []string `json:"args"`
Env []string `json:"env"`
Dir string `json:"dir"`
Timeout *time.Duration `json:"timeout"`
}
// NewCommandHook will execute the provided command when the hook is run.
func NewCommandHook(cmd Command) CommandHook {
return CommandHook{
Command: cmd,
}
}
type CommandHook struct {
Command
}
func (c Command) Run(s HookState) error {
b, err := json.Marshal(s)
if err != nil {
return err
}
var stdout, stderr bytes.Buffer
cmd := exec.Cmd{
Path: c.Path,
Args: c.Args,
Env: c.Env,
Stdin: bytes.NewReader(b),
Stdout: &stdout,
Stderr: &stderr,
}
if err := cmd.Start(); err != nil {
return err
}
errC := make(chan error, 1)
go func() {
err := cmd.Wait()
if err != nil {
err = fmt.Errorf("error running hook: %v, stdout: %s, stderr: %s", err, stdout.String(), stderr.String())
}
errC <- err
}()
var timerCh <-chan time.Time
if c.Timeout != nil {
timer := time.NewTimer(*c.Timeout)
defer timer.Stop()
timerCh = timer.C
}
select {
case err := <-errC:
return err
case <-timerCh:
cmd.Process.Kill()
cmd.Wait()
return fmt.Errorf("hook ran past specified timeout of %.1fs", c.Timeout.Seconds())
}
}

51
vendor/github.com/opencontainers/runc/libcontainer/configs/config_unix.go generated vendored
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@ -1,51 +0,0 @@
// +build freebsd linux
package configs
import "fmt"
// HostUID gets the root uid for the process on host which could be non-zero
// when user namespaces are enabled.
func (c Config) HostUID() (int, error) {
if c.Namespaces.Contains(NEWUSER) {
if c.UidMappings == nil {
return -1, fmt.Errorf("User namespaces enabled, but no user mappings found.")
}
id, found := c.hostIDFromMapping(0, c.UidMappings)
if !found {
return -1, fmt.Errorf("User namespaces enabled, but no root user mapping found.")
}
return id, nil
}
// Return default root uid 0
return 0, nil
}
// HostGID gets the root gid for the process on host which could be non-zero
// when user namespaces are enabled.
func (c Config) HostGID() (int, error) {
if c.Namespaces.Contains(NEWUSER) {
if c.GidMappings == nil {
return -1, fmt.Errorf("User namespaces enabled, but no gid mappings found.")
}
id, found := c.hostIDFromMapping(0, c.GidMappings)
if !found {
return -1, fmt.Errorf("User namespaces enabled, but no root group mapping found.")
}
return id, nil
}
// Return default root gid 0
return 0, nil
}
// Utility function that gets a host ID for a container ID from user namespace map
// if that ID is present in the map.
func (c Config) hostIDFromMapping(containerID int, uMap []IDMap) (int, bool) {
for _, m := range uMap {
if (containerID >= m.ContainerID) && (containerID <= (m.ContainerID + m.Size - 1)) {
hostID := m.HostID + (containerID - m.ContainerID)
return hostID, true
}
}
return -1, false
}

57
vendor/github.com/opencontainers/runc/libcontainer/configs/device.go generated vendored
View File

@ -1,57 +0,0 @@
package configs
import (
"fmt"
"os"
)
const (
Wildcard = -1
)
// TODO Windows: This can be factored out in the future
type Device struct {
// Device type, block, char, etc.
Type rune `json:"type"`
// Path to the device.
Path string `json:"path"`
// Major is the device's major number.
Major int64 `json:"major"`
// Minor is the device's minor number.
Minor int64 `json:"minor"`
// Cgroup permissions format, rwm.
Permissions string `json:"permissions"`
// FileMode permission bits for the device.
FileMode os.FileMode `json:"file_mode"`
// Uid of the device.
Uid uint32 `json:"uid"`
// Gid of the device.
Gid uint32 `json:"gid"`
// Write the file to the allowed list
Allow bool `json:"allow"`
}
func (d *Device) CgroupString() string {
return fmt.Sprintf("%c %s:%s %s", d.Type, deviceNumberString(d.Major), deviceNumberString(d.Minor), d.Permissions)
}
func (d *Device) Mkdev() int {
return int((d.Major << 8) | (d.Minor & 0xff) | ((d.Minor & 0xfff00) << 12))
}
// deviceNumberString converts the device number to a string return result.
func deviceNumberString(number int64) string {
if number == Wildcard {
return "*"
}
return fmt.Sprint(number)
}

111
vendor/github.com/opencontainers/runc/libcontainer/configs/device_defaults.go generated vendored
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@ -1,111 +0,0 @@
// +build linux freebsd
package configs
var (
// DefaultSimpleDevices are devices that are to be both allowed and created.
DefaultSimpleDevices = []*Device{
// /dev/null and zero
{
Path: "/dev/null",
Type: 'c',
Major: 1,
Minor: 3,
Permissions: "rwm",
FileMode: 0666,
},
{
Path: "/dev/zero",
Type: 'c',
Major: 1,
Minor: 5,
Permissions: "rwm",
FileMode: 0666,
},
{
Path: "/dev/full",
Type: 'c',
Major: 1,
Minor: 7,
Permissions: "rwm",
FileMode: 0666,
},
// consoles and ttys
{
Path: "/dev/tty",
Type: 'c',
Major: 5,
Minor: 0,
Permissions: "rwm",
FileMode: 0666,
},
// /dev/urandom,/dev/random
{
Path: "/dev/urandom",
Type: 'c',
Major: 1,
Minor: 9,
Permissions: "rwm",
FileMode: 0666,
},
{
Path: "/dev/random",
Type: 'c',
Major: 1,
Minor: 8,
Permissions: "rwm",
FileMode: 0666,
},
}
DefaultAllowedDevices = append([]*Device{
// allow mknod for any device
{
Type: 'c',
Major: Wildcard,
Minor: Wildcard,
Permissions: "m",
},
{
Type: 'b',
Major: Wildcard,
Minor: Wildcard,
Permissions: "m",
},
{
Path: "/dev/console",
Type: 'c',
Major: 5,
Minor: 1,
Permissions: "rwm",
},
// /dev/pts/ - pts namespaces are "coming soon"
{
Path: "",
Type: 'c',
Major: 136,
Minor: Wildcard,
Permissions: "rwm",
},
{
Path: "",
Type: 'c',
Major: 5,
Minor: 2,
Permissions: "rwm",
},
// tuntap
{
Path: "",
Type: 'c',
Major: 10,
Minor: 200,
Permissions: "rwm",
},
}, DefaultSimpleDevices...)
DefaultAutoCreatedDevices = append([]*Device{}, DefaultSimpleDevices...)
)

9
vendor/github.com/opencontainers/runc/libcontainer/configs/hugepage_limit.go generated vendored
View File

@ -1,9 +0,0 @@
package configs
type HugepageLimit struct {
// which type of hugepage to limit.
Pagesize string `json:"page_size"`
// usage limit for hugepage.
Limit uint64 `json:"limit"`
}

14
vendor/github.com/opencontainers/runc/libcontainer/configs/interface_priority_map.go generated vendored
View File

@ -1,14 +0,0 @@
package configs
import (
"fmt"
)
type IfPrioMap struct {
Interface string `json:"interface"`
Priority int64 `json:"priority"`
}
func (i *IfPrioMap) CgroupString() string {
return fmt.Sprintf("%s %d", i.Interface, i.Priority)
}

39
vendor/github.com/opencontainers/runc/libcontainer/configs/mount.go generated vendored
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@ -1,39 +0,0 @@
package configs
const (
// EXT_COPYUP is a directive to copy up the contents of a directory when
// a tmpfs is mounted over it.
EXT_COPYUP = 1 << iota
)
type Mount struct {
// Source path for the mount.
Source string `json:"source"`
// Destination path for the mount inside the container.
Destination string `json:"destination"`
// Device the mount is for.
Device string `json:"device"`
// Mount flags.
Flags int `json:"flags"`
// Propagation Flags
PropagationFlags []int `json:"propagation_flags"`
// Mount data applied to the mount.
Data string `json:"data"`
// Relabel source if set, "z" indicates shared, "Z" indicates unshared.
Relabel string `json:"relabel"`
// Extensions are additional flags that are specific to runc.
Extensions int `json:"extensions"`
// Optional Command to be run before Source is mounted.
PremountCmds []Command `json:"premount_cmds"`
// Optional Command to be run after Source is mounted.
PostmountCmds []Command `json:"postmount_cmds"`
}

5
vendor/github.com/opencontainers/runc/libcontainer/configs/namespaces.go generated vendored
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@ -1,5 +0,0 @@
package configs
type NamespaceType string
type Namespaces []Namespace

31
vendor/github.com/opencontainers/runc/libcontainer/configs/namespaces_syscall.go generated vendored
View File

@ -1,31 +0,0 @@
// +build linux
package configs
import "syscall"
func (n *Namespace) Syscall() int {
return namespaceInfo[n.Type]
}
var namespaceInfo = map[NamespaceType]int{
NEWNET: syscall.CLONE_NEWNET,
NEWNS: syscall.CLONE_NEWNS,
NEWUSER: syscall.CLONE_NEWUSER,
NEWIPC: syscall.CLONE_NEWIPC,
NEWUTS: syscall.CLONE_NEWUTS,
NEWPID: syscall.CLONE_NEWPID,
}
// CloneFlags parses the container's Namespaces options to set the correct
// flags on clone, unshare. This function returns flags only for new namespaces.
func (n *Namespaces) CloneFlags() uintptr {
var flag int
for _, v := range *n {
if v.Path != "" {
continue
}
flag |= namespaceInfo[v.Type]
}
return uintptr(flag)
}

15
vendor/github.com/opencontainers/runc/libcontainer/configs/namespaces_syscall_unsupported.go generated vendored
View File

@ -1,15 +0,0 @@
// +build !linux,!windows
package configs
func (n *Namespace) Syscall() int {
panic("No namespace syscall support")
return 0
}
// CloneFlags parses the container's Namespaces options to set the correct
// flags on clone, unshare. This function returns flags only for new namespaces.
func (n *Namespaces) CloneFlags() uintptr {
panic("No namespace syscall support")
return uintptr(0)
}

127
vendor/github.com/opencontainers/runc/libcontainer/configs/namespaces_unix.go generated vendored
View File

@ -1,127 +0,0 @@
// +build linux freebsd
package configs
import (
"fmt"
"os"
"sync"
)
const (
NEWNET NamespaceType = "NEWNET"
NEWPID NamespaceType = "NEWPID"
NEWNS NamespaceType = "NEWNS"
NEWUTS NamespaceType = "NEWUTS"
NEWIPC NamespaceType = "NEWIPC"
NEWUSER NamespaceType = "NEWUSER"
)
var (
nsLock sync.Mutex
supportedNamespaces = make(map[NamespaceType]bool)
)
// NsName converts the namespace type to its filename
func NsName(ns NamespaceType) string {
switch ns {
case NEWNET:
return "net"
case NEWNS:
return "mnt"
case NEWPID:
return "pid"
case NEWIPC:
return "ipc"
case NEWUSER:
return "user"
case NEWUTS:
return "uts"
}
return ""
}
// IsNamespaceSupported returns whether a namespace is available or
// not
func IsNamespaceSupported(ns NamespaceType) bool {
nsLock.Lock()
defer nsLock.Unlock()
supported, ok := supportedNamespaces[ns]
if ok {
return supported
}
nsFile := NsName(ns)
// if the namespace type is unknown, just return false
if nsFile == "" {
return false
}
_, err := os.Stat(fmt.Sprintf("/proc/self/ns/%s", nsFile))
// a namespace is supported if it exists and we have permissions to read it
supported = err == nil
supportedNamespaces[ns] = supported
return supported
}
func NamespaceTypes() []NamespaceType {
return []NamespaceType{
NEWNET,
NEWPID,
NEWNS,
NEWUTS,
NEWIPC,
NEWUSER,
}
}
// Namespace defines configuration for each namespace. It specifies an
// alternate path that is able to be joined via setns.
type Namespace struct {
Type NamespaceType `json:"type"`
Path string `json:"path"`
}
func (n *Namespace) GetPath(pid int) string {
if n.Path != "" {
return n.Path
}
return fmt.Sprintf("/proc/%d/ns/%s", pid, NsName(n.Type))
}
func (n *Namespaces) Remove(t NamespaceType) bool {
i := n.index(t)
if i == -1 {
return false
}
*n = append((*n)[:i], (*n)[i+1:]...)
return true
}
func (n *Namespaces) Add(t NamespaceType, path string) {
i := n.index(t)
if i == -1 {
*n = append(*n, Namespace{Type: t, Path: path})
return
}
(*n)[i].Path = path
}
func (n *Namespaces) index(t NamespaceType) int {
for i, ns := range *n {
if ns.Type == t {
return i
}
}
return -1
}
func (n *Namespaces) Contains(t NamespaceType) bool {
return n.index(t) != -1
}
func (n *Namespaces) PathOf(t NamespaceType) string {
i := n.index(t)
if i == -1 {
return ""
}
return (*n)[i].Path
}

8
vendor/github.com/opencontainers/runc/libcontainer/configs/namespaces_unsupported.go generated vendored
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@ -1,8 +0,0 @@
// +build !linux,!freebsd
package configs
// Namespace defines configuration for each namespace. It specifies an
// alternate path that is able to be joined via setns.
type Namespace struct {
}

72
vendor/github.com/opencontainers/runc/libcontainer/configs/network.go generated vendored
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@ -1,72 +0,0 @@
package configs
// Network defines configuration for a container's networking stack
//
// The network configuration can be omitted from a container causing the
// container to be setup with the host's networking stack
type Network struct {
// Type sets the networks type, commonly veth and loopback
Type string `json:"type"`
// Name of the network interface
Name string `json:"name"`
// The bridge to use.
Bridge string `json:"bridge"`
// MacAddress contains the MAC address to set on the network interface
MacAddress string `json:"mac_address"`
// Address contains the IPv4 and mask to set on the network interface
Address string `json:"address"`
// Gateway sets the gateway address that is used as the default for the interface
Gateway string `json:"gateway"`
// IPv6Address contains the IPv6 and mask to set on the network interface
IPv6Address string `json:"ipv6_address"`
// IPv6Gateway sets the ipv6 gateway address that is used as the default for the interface
IPv6Gateway string `json:"ipv6_gateway"`
// Mtu sets the mtu value for the interface and will be mirrored on both the host and
// container's interfaces if a pair is created, specifically in the case of type veth
// Note: This does not apply to loopback interfaces.
Mtu int `json:"mtu"`
// TxQueueLen sets the tx_queuelen value for the interface and will be mirrored on both the host and
// container's interfaces if a pair is created, specifically in the case of type veth
// Note: This does not apply to loopback interfaces.
TxQueueLen int `json:"txqueuelen"`
// HostInterfaceName is a unique name of a veth pair that resides on in the host interface of the
// container.
HostInterfaceName string `json:"host_interface_name"`
// HairpinMode specifies if hairpin NAT should be enabled on the virtual interface
// bridge port in the case of type veth
// Note: This is unsupported on some systems.
// Note: This does not apply to loopback interfaces.
HairpinMode bool `json:"hairpin_mode"`
}
// Routes can be specified to create entries in the route table as the container is started
//
// All of destination, source, and gateway should be either IPv4 or IPv6.
// One of the three options must be present, and omitted entries will use their
// IP family default for the route table. For IPv4 for example, setting the
// gateway to 1.2.3.4 and the interface to eth0 will set up a standard
// destination of 0.0.0.0(or *) when viewed in the route table.
type Route struct {
// Sets the destination and mask, should be a CIDR. Accepts IPv4 and IPv6
Destination string `json:"destination"`
// Sets the source and mask, should be a CIDR. Accepts IPv4 and IPv6
Source string `json:"source"`
// Sets the gateway. Accepts IPv4 and IPv6
Gateway string `json:"gateway"`
// The device to set this route up for, for example: eth0
InterfaceName string `json:"interface_name"`
}

201
vendor/github.com/opencontainers/selinux/LICENSE generated vendored
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@ -1,201 +0,0 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
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7
vendor/github.com/opencontainers/selinux/README.md generated vendored
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@ -1,7 +0,0 @@
# selinux
[![GoDoc](https://godoc.org/github.com/opencontainers/selinux?status.svg)](https://godoc.org/github.com/opencontainers/selinux) [![Go Report Card](https://goreportcard.com/badge/github.com/opencontainers/selinux)](https://goreportcard.com/report/github.com/opencontainers/selinux) [![Build Status](https://travis-ci.org/opencontainers/selinux.svg?branch=master)](https://travis-ci.org/opencontainers/selinux)
Common SELinux package used across the container ecosystem.
Please see the [godoc](https://godoc.org/github.com/opencontainers/selinux) for more information.

84
vendor/github.com/opencontainers/selinux/go-selinux/label/label.go generated vendored
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@ -1,84 +0,0 @@
// +build !selinux !linux
package label
// InitLabels returns the process label and file labels to be used within
// the container. A list of options can be passed into this function to alter
// the labels.
func InitLabels(options []string) (string, string, error) {
return "", "", nil
}
func GetROMountLabel() string {
return ""
}
func GenLabels(options string) (string, string, error) {
return "", "", nil
}
func FormatMountLabel(src string, mountLabel string) string {
return src
}
func SetProcessLabel(processLabel string) error {
return nil
}
func GetFileLabel(path string) (string, error) {
return "", nil
}
func SetFileLabel(path string, fileLabel string) error {
return nil
}
func SetFileCreateLabel(fileLabel string) error {
return nil
}
func Relabel(path string, fileLabel string, shared bool) error {
return nil
}
func GetPidLabel(pid int) (string, error) {
return "", nil
}
func Init() {
}
func ReserveLabel(label string) error {
return nil
}
func ReleaseLabel(label string) error {
return nil
}
// DupSecOpt takes a process label and returns security options that
// can be used to set duplicate labels on future container processes
func DupSecOpt(src string) []string {
return nil
}
// DisableSecOpt returns a security opt that can disable labeling
// support for future container processes
func DisableSecOpt() []string {
return nil
}
// Validate checks that the label does not include unexpected options
func Validate(label string) error {
return nil
}
// RelabelNeeded checks whether the user requested a relabel
func RelabelNeeded(label string) bool {
return false
}
// IsShared checks that the label includes a "shared" mark
func IsShared(label string) bool {
return false
}

204
vendor/github.com/opencontainers/selinux/go-selinux/label/label_selinux.go generated vendored
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@ -1,204 +0,0 @@
// +build selinux,linux
package label
import (
"fmt"
"strings"
"github.com/opencontainers/selinux/go-selinux"
)
// Valid Label Options
var validOptions = map[string]bool{
"disable": true,
"type": true,
"user": true,
"role": true,
"level": true,
}
var ErrIncompatibleLabel = fmt.Errorf("Bad SELinux option z and Z can not be used together")
// InitLabels returns the process label and file labels to be used within
// the container. A list of options can be passed into this function to alter
// the labels. The labels returned will include a random MCS String, that is
// guaranteed to be unique.
func InitLabels(options []string) (string, string, error) {
if !selinux.GetEnabled() {
return "", "", nil
}
processLabel, mountLabel := selinux.ContainerLabels()
if processLabel != "" {
pcon := selinux.NewContext(processLabel)
mcon := selinux.NewContext(mountLabel)
for _, opt := range options {
if opt == "disable" {
return "", "", nil
}
if i := strings.Index(opt, ":"); i == -1 {
return "", "", fmt.Errorf("Bad label option %q, valid options 'disable' or \n'user, role, level, type' followed by ':' and a value", opt)
}
con := strings.SplitN(opt, ":", 2)
if !validOptions[con[0]] {
return "", "", fmt.Errorf("Bad label option %q, valid options 'disable, user, role, level, type'", con[0])
}
pcon[con[0]] = con[1]
if con[0] == "level" || con[0] == "user" {
mcon[con[0]] = con[1]
}
}
processLabel = pcon.Get()
mountLabel = mcon.Get()
}
return processLabel, mountLabel, nil
}
func ROMountLabel() string {
return selinux.ROFileLabel()
}
// DEPRECATED: The GenLabels function is only to be used during the transition to the official API.
func GenLabels(options string) (string, string, error) {
return InitLabels(strings.Fields(options))
}
// FormatMountLabel returns a string to be used by the mount command.
// The format of this string will be used to alter the labeling of the mountpoint.
// The string returned is suitable to be used as the options field of the mount command.
// If you need to have additional mount point options, you can pass them in as
// the first parameter. Second parameter is the label that you wish to apply
// to all content in the mount point.
func FormatMountLabel(src, mountLabel string) string {
if mountLabel != "" {
switch src {
case "":
src = fmt.Sprintf("context=%q", mountLabel)
default:
src = fmt.Sprintf("%s,context=%q", src, mountLabel)
}
}
return src
}
// SetProcessLabel takes a process label and tells the kernel to assign the
// label to the next program executed by the current process.
func SetProcessLabel(processLabel string) error {
if processLabel == "" {
return nil
}
return selinux.SetExecLabel(processLabel)
}
// ProcessLabel returns the process label that the kernel will assign
// to the next program executed by the current process. If "" is returned
// this indicates that the default labeling will happen for the process.
func ProcessLabel() (string, error) {
return selinux.ExecLabel()
}
// GetFileLabel returns the label for specified path
func FileLabel(path string) (string, error) {
return selinux.FileLabel(path)
}
// SetFileLabel modifies the "path" label to the specified file label
func SetFileLabel(path string, fileLabel string) error {
if selinux.GetEnabled() && fileLabel != "" {
return selinux.SetFileLabel(path, fileLabel)
}
return nil
}
// SetFileCreateLabel tells the kernel the label for all files to be created
func SetFileCreateLabel(fileLabel string) error {
if selinux.GetEnabled() {
return selinux.SetFSCreateLabel(fileLabel)
}
return nil
}
// Relabel changes the label of path to the filelabel string.
// It changes the MCS label to s0 if shared is true.
// This will allow all containers to share the content.
func Relabel(path string, fileLabel string, shared bool) error {
if !selinux.GetEnabled() {
return nil
}
if fileLabel == "" {
return nil
}
exclude_paths := map[string]bool{"/": true, "/usr": true, "/etc": true}
if exclude_paths[path] {
return fmt.Errorf("SELinux relabeling of %s is not allowed", path)
}
if shared {
c := selinux.NewContext(fileLabel)
c["level"] = "s0"
fileLabel = c.Get()
}
if err := selinux.Chcon(path, fileLabel, true); err != nil {
return err
}
return nil
}
// PidLabel will return the label of the process running with the specified pid
func PidLabel(pid int) (string, error) {
return selinux.PidLabel(pid)
}
// Init initialises the labeling system
func Init() {
selinux.GetEnabled()
}
// ReserveLabel will record the fact that the MCS label has already been used.
// This will prevent InitLabels from using the MCS label in a newly created
// container
func ReserveLabel(label string) error {
selinux.ReserveLabel(label)
return nil
}
// ReleaseLabel will remove the reservation of the MCS label.
// This will allow InitLabels to use the MCS label in a newly created
// containers
func ReleaseLabel(label string) error {
selinux.ReleaseLabel(label)
return nil
}
// DupSecOpt takes a process label and returns security options that
// can be used to set duplicate labels on future container processes
func DupSecOpt(src string) []string {
return selinux.DupSecOpt(src)
}
// DisableSecOpt returns a security opt that can disable labeling
// support for future container processes
func DisableSecOpt() []string {
return selinux.DisableSecOpt()
}
// Validate checks that the label does not include unexpected options
func Validate(label string) error {
if strings.Contains(label, "z") && strings.Contains(label, "Z") {
return ErrIncompatibleLabel
}
return nil
}
// RelabelNeeded checks whether the user requested a relabel
func RelabelNeeded(label string) bool {
return strings.Contains(label, "z") || strings.Contains(label, "Z")
}
// IsShared checks that the label includes a "shared" mark
func IsShared(label string) bool {
return strings.Contains(label, "z")
}

593
vendor/github.com/opencontainers/selinux/go-selinux/selinux.go generated vendored
View File

@ -1,593 +0,0 @@
// +build linux
package selinux
import (
"bufio"
"crypto/rand"
"encoding/binary"
"fmt"
"io"
"os"
"path/filepath"
"regexp"
"strconv"
"strings"
"sync"
"syscall"
)
const (
// Enforcing constant indicate SELinux is in enforcing mode
Enforcing = 1
// Permissive constant to indicate SELinux is in permissive mode
Permissive = 0
// Disabled constant to indicate SELinux is disabled
Disabled = -1
selinuxDir = "/etc/selinux/"
selinuxConfig = selinuxDir + "config"
selinuxTypeTag = "SELINUXTYPE"
selinuxTag = "SELINUX"
selinuxPath = "/sys/fs/selinux"
xattrNameSelinux = "security.selinux"
stRdOnly = 0x01
)
type selinuxState struct {
enabledSet bool
enabled bool
selinuxfsSet bool
selinuxfs string
mcsList map[string]bool
sync.Mutex
}
var (
assignRegex = regexp.MustCompile(`^([^=]+)=(.*)$`)
state = selinuxState{
mcsList: make(map[string]bool),
}
)
// Context is a representation of the SELinux label broken into 4 parts
type Context map[string]string
func (s *selinuxState) setEnable(enabled bool) bool {
s.Lock()
defer s.Unlock()
s.enabledSet = true
s.enabled = enabled
return s.enabled
}
func (s *selinuxState) getEnabled() bool {
s.Lock()
enabled := s.enabled
enabledSet := s.enabledSet
s.Unlock()
if enabledSet {
return enabled
}
enabled = false
if fs := getSelinuxMountPoint(); fs != "" {
if con, _ := CurrentLabel(); con != "kernel" {
enabled = true
}
}
return s.setEnable(enabled)
}
// SetDisabled disables selinux support for the package
func SetDisabled() {
state.setEnable(false)
}
func (s *selinuxState) setSELinuxfs(selinuxfs string) string {
s.Lock()
defer s.Unlock()
s.selinuxfsSet = true
s.selinuxfs = selinuxfs
return s.selinuxfs
}
func (s *selinuxState) getSELinuxfs() string {
s.Lock()
selinuxfs := s.selinuxfs
selinuxfsSet := s.selinuxfsSet
s.Unlock()
if selinuxfsSet {
return selinuxfs
}
selinuxfs = ""
f, err := os.Open("/proc/self/mountinfo")
if err != nil {
return selinuxfs
}
defer f.Close()
scanner := bufio.NewScanner(f)
for scanner.Scan() {
txt := scanner.Text()
// Safe as mountinfo encodes mountpoints with spaces as \040.
sepIdx := strings.Index(txt, " - ")
if sepIdx == -1 {
continue
}
if !strings.Contains(txt[sepIdx:], "selinuxfs") {
continue
}
fields := strings.Split(txt, " ")
if len(fields) < 5 {
continue
}
selinuxfs = fields[4]
break
}
if selinuxfs != "" {
var buf syscall.Statfs_t
syscall.Statfs(selinuxfs, &buf)
if (buf.Flags & stRdOnly) == 1 {
selinuxfs = ""
}
}
return s.setSELinuxfs(selinuxfs)
}
// getSelinuxMountPoint returns the path to the mountpoint of an selinuxfs
// filesystem or an empty string if no mountpoint is found. Selinuxfs is
// a proc-like pseudo-filesystem that exposes the selinux policy API to
// processes. The existence of an selinuxfs mount is used to determine
// whether selinux is currently enabled or not.
func getSelinuxMountPoint() string {
return state.getSELinuxfs()
}
// GetEnabled returns whether selinux is currently enabled.
func GetEnabled() bool {
return state.getEnabled()
}
func readConfig(target string) (value string) {
var (
val, key string
bufin *bufio.Reader
)
in, err := os.Open(selinuxConfig)
if err != nil {
return ""
}
defer in.Close()
bufin = bufio.NewReader(in)
for done := false; !done; {
var line string
if line, err = bufin.ReadString('\n'); err != nil {
if err != io.EOF {
return ""
}
done = true
}
line = strings.TrimSpace(line)
if len(line) == 0 {
// Skip blank lines
continue
}
if line[0] == ';' || line[0] == '#' {
// Skip comments
continue
}
if groups := assignRegex.FindStringSubmatch(line); groups != nil {
key, val = strings.TrimSpace(groups[1]), strings.TrimSpace(groups[2])
if key == target {
return strings.Trim(val, "\"")
}
}
}
return ""
}
func getSELinuxPolicyRoot() string {
return selinuxDir + readConfig(selinuxTypeTag)
}
func readCon(name string) (string, error) {
var val string
in, err := os.Open(name)
if err != nil {
return "", err
}
defer in.Close()
_, err = fmt.Fscanf(in, "%s", &val)
return val, err
}
// SetFileLabel sets the SELinux label for this path or returns an error.
func SetFileLabel(path string, label string) error {
return lsetxattr(path, xattrNameSelinux, []byte(label), 0)
}
// Filecon returns the SELinux label for this path or returns an error.
func FileLabel(path string) (string, error) {
label, err := lgetxattr(path, xattrNameSelinux)
if err != nil {
return "", err
}
// Trim the NUL byte at the end of the byte buffer, if present.
if len(label) > 0 && label[len(label)-1] == '\x00' {
label = label[:len(label)-1]
}
return string(label), nil
}
/*
SetFSCreateLabel tells kernel the label to create all file system objects
created by this task. Setting label="" to return to default.
*/
func SetFSCreateLabel(label string) error {
return writeCon(fmt.Sprintf("/proc/self/task/%d/attr/fscreate", syscall.Gettid()), label)
}
/*
FSCreateLabel returns the default label the kernel which the kernel is using
for file system objects created by this task. "" indicates default.
*/
func FSCreateLabel() (string, error) {
return readCon(fmt.Sprintf("/proc/self/task/%d/attr/fscreate", syscall.Gettid()))
}
// CurrentLabel returns the SELinux label of the current process thread, or an error.
func CurrentLabel() (string, error) {
return readCon(fmt.Sprintf("/proc/self/task/%d/attr/current", syscall.Gettid()))
}
// PidLabel returns the SELinux label of the given pid, or an error.
func PidLabel(pid int) (string, error) {
return readCon(fmt.Sprintf("/proc/%d/attr/current", pid))
}
/*
ExecLabel returns the SELinux label that the kernel will use for any programs
that are executed by the current process thread, or an error.
*/
func ExecLabel() (string, error) {
return readCon(fmt.Sprintf("/proc/self/task/%d/attr/exec", syscall.Gettid()))
}
func writeCon(name string, val string) error {
out, err := os.OpenFile(name, os.O_WRONLY, 0)
if err != nil {
return err
}
defer out.Close()
if val != "" {
_, err = out.Write([]byte(val))
} else {
_, err = out.Write(nil)
}
return err
}
/*
SetExecLabel sets the SELinux label that the kernel will use for any programs
that are executed by the current process thread, or an error.
*/
func SetExecLabel(label string) error {
return writeCon(fmt.Sprintf("/proc/self/task/%d/attr/exec", syscall.Gettid()), label)
}
// Get returns the Context as a string
func (c Context) Get() string {
return fmt.Sprintf("%s:%s:%s:%s", c["user"], c["role"], c["type"], c["level"])
}
// NewContext creates a new Context struct from the specified label
func NewContext(label string) Context {
c := make(Context)
if len(label) != 0 {
con := strings.SplitN(label, ":", 4)
c["user"] = con[0]
c["role"] = con[1]
c["type"] = con[2]
c["level"] = con[3]
}
return c
}
// ReserveLabel reserves the MLS/MCS level component of the specified label
func ReserveLabel(label string) {
if len(label) != 0 {
con := strings.SplitN(label, ":", 4)
mcsAdd(con[3])
}
}
func selinuxEnforcePath() string {
return fmt.Sprintf("%s/enforce", selinuxPath)
}
// EnforceMode returns the current SELinux mode Enforcing, Permissive, Disabled
func EnforceMode() int {
var enforce int
enforceS, err := readCon(selinuxEnforcePath())
if err != nil {
return -1
}
enforce, err = strconv.Atoi(string(enforceS))
if err != nil {
return -1
}
return enforce
}
/*
SetEnforce sets the current SELinux mode Enforcing, Permissive.
Disabled is not valid, since this needs to be set at boot time.
*/
func SetEnforceMode(mode int) error {
return writeCon(selinuxEnforcePath(), fmt.Sprintf("%d", mode))
}
/*
DefaultEnforceMode returns the systems default SELinux mode Enforcing,
Permissive or Disabled. Note this is is just the default at boot time.
EnforceMode tells you the systems current mode.
*/
func DefaultEnforceMode() int {
switch readConfig(selinuxTag) {
case "enforcing":
return Enforcing
case "permissive":
return Permissive
}
return Disabled
}
func mcsAdd(mcs string) error {
state.Lock()
defer state.Unlock()
if state.mcsList[mcs] {
return fmt.Errorf("MCS Label already exists")
}
state.mcsList[mcs] = true
return nil
}
func mcsDelete(mcs string) {
state.Lock()
defer state.Unlock()
state.mcsList[mcs] = false
}
func intToMcs(id int, catRange uint32) string {
var (
SETSIZE = int(catRange)
TIER = SETSIZE
ORD = id
)
if id < 1 || id > 523776 {
return ""
}
for ORD > TIER {
ORD = ORD - TIER
TIER--
}
TIER = SETSIZE - TIER
ORD = ORD + TIER
return fmt.Sprintf("s0:c%d,c%d", TIER, ORD)
}
func uniqMcs(catRange uint32) string {
var (
n uint32
c1, c2 uint32
mcs string
)
for {
binary.Read(rand.Reader, binary.LittleEndian, &n)
c1 = n % catRange
binary.Read(rand.Reader, binary.LittleEndian, &n)
c2 = n % catRange
if c1 == c2 {
continue
} else {
if c1 > c2 {
c1, c2 = c2, c1
}
}
mcs = fmt.Sprintf("s0:c%d,c%d", c1, c2)
if err := mcsAdd(mcs); err != nil {
continue
}
break
}
return mcs
}
/*
ReleaseLabel will unreserve the MLS/MCS Level field of the specified label.
Allowing it to be used by another process.
*/
func ReleaseLabel(label string) {
if len(label) != 0 {
con := strings.SplitN(label, ":", 4)
mcsDelete(con[3])
}
}
var roFileLabel string
// ROFileLabel returns the specified SELinux readonly file label
func ROFileLabel() (fileLabel string) {
return roFileLabel
}
/*
ContainerLabels returns an allocated processLabel and fileLabel to be used for
container labeling by the calling process.
*/
func ContainerLabels() (processLabel string, fileLabel string) {
var (
val, key string
bufin *bufio.Reader
)
if !GetEnabled() {
return "", ""
}
lxcPath := fmt.Sprintf("%s/contexts/lxc_contexts", getSELinuxPolicyRoot())
in, err := os.Open(lxcPath)
if err != nil {
return "", ""
}
defer in.Close()
bufin = bufio.NewReader(in)
for done := false; !done; {
var line string
if line, err = bufin.ReadString('\n'); err != nil {
if err == io.EOF {
done = true
} else {
goto exit
}
}
line = strings.TrimSpace(line)
if len(line) == 0 {
// Skip blank lines
continue
}
if line[0] == ';' || line[0] == '#' {
// Skip comments
continue
}
if groups := assignRegex.FindStringSubmatch(line); groups != nil {
key, val = strings.TrimSpace(groups[1]), strings.TrimSpace(groups[2])
if key == "process" {
processLabel = strings.Trim(val, "\"")
}
if key == "file" {
fileLabel = strings.Trim(val, "\"")
}
if key == "ro_file" {
roFileLabel = strings.Trim(val, "\"")
}
}
}
if processLabel == "" || fileLabel == "" {
return "", ""
}
if roFileLabel == "" {
roFileLabel = fileLabel
}
exit:
mcs := uniqMcs(1024)
scon := NewContext(processLabel)
scon["level"] = mcs
processLabel = scon.Get()
scon = NewContext(fileLabel)
scon["level"] = mcs
fileLabel = scon.Get()
return processLabel, fileLabel
}
// SecurityCheckContext validates that the SELinux label is understood by the kernel
func SecurityCheckContext(val string) error {
return writeCon(fmt.Sprintf("%s.context", selinuxPath), val)
}
/*
CopyLevel returns a label with the MLS/MCS level from src label replaces on
the dest label.
*/
func CopyLevel(src, dest string) (string, error) {
if src == "" {
return "", nil
}
if err := SecurityCheckContext(src); err != nil {
return "", err
}
if err := SecurityCheckContext(dest); err != nil {
return "", err
}
scon := NewContext(src)
tcon := NewContext(dest)
mcsDelete(tcon["level"])
mcsAdd(scon["level"])
tcon["level"] = scon["level"]
return tcon.Get(), nil
}
// Prevent users from relabing system files
func badPrefix(fpath string) error {
var badprefixes = []string{"/usr"}
for _, prefix := range badprefixes {
if fpath == prefix || strings.HasPrefix(fpath, fmt.Sprintf("%s/", prefix)) {
return fmt.Errorf("relabeling content in %s is not allowed", prefix)
}
}
return nil
}
// Chcon changes the fpath file object to the SELinux label label.
// If the fpath is a directory and recurse is true Chcon will walk the
// directory tree setting the label
func Chcon(fpath string, label string, recurse bool) error {
if label == "" {
return nil
}
if err := badPrefix(fpath); err != nil {
return err
}
callback := func(p string, info os.FileInfo, err error) error {
return SetFileLabel(p, label)
}
if recurse {
return filepath.Walk(fpath, callback)
}
return SetFileLabel(fpath, label)
}
// DupSecOpt takes an SELinux process label and returns security options that
// can will set the SELinux Type and Level for future container processes
func DupSecOpt(src string) []string {
if src == "" {
return nil
}
con := NewContext(src)
if con["user"] == "" ||
con["role"] == "" ||
con["type"] == "" ||
con["level"] == "" {
return nil
}
return []string{"user:" + con["user"],
"role:" + con["role"],
"type:" + con["type"],
"level:" + con["level"]}
}
// DisableSecOpt returns a security opt that can be used to disabling SELinux
// labeling support for future container processes
func DisableSecOpt() []string {
return []string{"disable"}
}

78
vendor/github.com/opencontainers/selinux/go-selinux/xattrs.go generated vendored
View File

@ -1,78 +0,0 @@
// +build linux
package selinux
import (
"syscall"
"unsafe"
)
var _zero uintptr
// Returns a []byte slice if the xattr is set and nil otherwise
// Requires path and its attribute as arguments
func lgetxattr(path string, attr string) ([]byte, error) {
var sz int
pathBytes, err := syscall.BytePtrFromString(path)
if err != nil {
return nil, err
}
attrBytes, err := syscall.BytePtrFromString(attr)
if err != nil {
return nil, err
}
// Start with a 128 length byte array
sz = 128
dest := make([]byte, sz)
destBytes := unsafe.Pointer(&dest[0])
_sz, _, errno := syscall.Syscall6(syscall.SYS_LGETXATTR, uintptr(unsafe.Pointer(pathBytes)), uintptr(unsafe.Pointer(attrBytes)), uintptr(destBytes), uintptr(len(dest)), 0, 0)
switch {
case errno == syscall.ENODATA:
return nil, errno
case errno == syscall.ENOTSUP:
return nil, errno
case errno == syscall.ERANGE:
// 128 byte array might just not be good enough,
// A dummy buffer is used ``uintptr(0)`` to get real size
// of the xattrs on disk
_sz, _, errno = syscall.Syscall6(syscall.SYS_LGETXATTR, uintptr(unsafe.Pointer(pathBytes)), uintptr(unsafe.Pointer(attrBytes)), uintptr(unsafe.Pointer(nil)), uintptr(0), 0, 0)
sz = int(_sz)
if sz < 0 {
return nil, errno
}
dest = make([]byte, sz)
destBytes := unsafe.Pointer(&dest[0])
_sz, _, errno = syscall.Syscall6(syscall.SYS_LGETXATTR, uintptr(unsafe.Pointer(pathBytes)), uintptr(unsafe.Pointer(attrBytes)), uintptr(destBytes), uintptr(len(dest)), 0, 0)
if errno != 0 {
return nil, errno
}
case errno != 0:
return nil, errno
}
sz = int(_sz)
return dest[:sz], nil
}
func lsetxattr(path string, attr string, data []byte, flags int) error {
pathBytes, err := syscall.BytePtrFromString(path)
if err != nil {
return err
}
attrBytes, err := syscall.BytePtrFromString(attr)
if err != nil {
return err
}
var dataBytes unsafe.Pointer
if len(data) > 0 {
dataBytes = unsafe.Pointer(&data[0])
} else {
dataBytes = unsafe.Pointer(&_zero)
}
_, _, errno := syscall.Syscall6(syscall.SYS_LSETXATTR, uintptr(unsafe.Pointer(pathBytes)), uintptr(unsafe.Pointer(attrBytes)), uintptr(dataBytes), uintptr(len(data)), uintptr(flags), 0)
if errno != 0 {
return errno
}
return nil
}