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package oci // import "github.com/docker/docker/oci"
import (
"runtime"
"github.com/docker/docker/oci/caps"
specs "github.com/opencontainers/runtime-spec/specs-go"
)
func iPtr(i int64) *int64 { return &i }
const defaultUnixPathEnv = "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
// DefaultPathEnv is unix style list of directories to search for
// executables. Each directory is separated from the next by a colon
// ':' character .
// For Windows containers, an empty string is returned as the default
// path will be set by the container, and Docker has no context of what the
// default path should be.
//
// TODO(thaJeztah) align Windows default with BuildKit; see https://github.com/moby/buildkit/pull/1747
// TODO(thaJeztah) use defaults from containerd (but align it with BuildKit; see https://github.com/moby/buildkit/pull/1747)
func DefaultPathEnv(os string) string {
if os == "windows" {
return ""
}
return defaultUnixPathEnv
}
// DefaultSpec returns the default spec used by docker for the current Platform
func DefaultSpec() specs.Spec {
if runtime.GOOS == "windows" {
return DefaultWindowsSpec()
}
return DefaultLinuxSpec()
}
// DefaultWindowsSpec create a default spec for running Windows containers
func DefaultWindowsSpec() specs.Spec {
return specs.Spec{
Version: specs.Version,
Windows: &specs.Windows{},
Process: &specs.Process{},
Root: &specs.Root{},
}
}
// DefaultLinuxSpec create a default spec for running Linux containers
func DefaultLinuxSpec() specs.Spec {
return specs.Spec{
Version: specs.Version,
Process: &specs.Process{
Capabilities: &specs.LinuxCapabilities{
Bounding: caps.DefaultCapabilities(),
Permitted: caps.DefaultCapabilities(),
Effective: caps.DefaultCapabilities(),
},
},
Root: &specs.Root{},
Mounts: []specs.Mount{
{
Destination: "/proc",
Type: "proc",
Source: "proc",
Options: []string{"nosuid", "noexec", "nodev"},
},
{
Destination: "/dev",
Type: "tmpfs",
Source: "tmpfs",
Options: []string{"nosuid", "strictatime", "mode=755", "size=65536k"},
},
{
Destination: "/dev/pts",
Type: "devpts",
Source: "devpts",
Options: []string{"nosuid", "noexec", "newinstance", "ptmxmode=0666", "mode=0620", "gid=5"},
},
{
Destination: "/sys",
Type: "sysfs",
Source: "sysfs",
Options: []string{"nosuid", "noexec", "nodev", "ro"},
},
{
Destination: "/sys/fs/cgroup",
Type: "cgroup",
Source: "cgroup",
Options: []string{"ro", "nosuid", "noexec", "nodev"},
},
{
Destination: "/dev/mqueue",
Type: "mqueue",
Source: "mqueue",
Options: []string{"nosuid", "noexec", "nodev"},
},
{
Destination: "/dev/shm",
Type: "tmpfs",
Source: "shm",
Options: []string{"nosuid", "noexec", "nodev", "mode=1777"},
},
},
Linux: &specs.Linux{
MaskedPaths: []string{
"/proc/asound",
"/proc/acpi",
"/proc/kcore",
"/proc/keys",
"/proc/latency_stats",
"/proc/timer_list",
"/proc/timer_stats",
"/proc/sched_debug",
"/proc/scsi",
"/sys/firmware",
"/sys/devices/virtual/powercap",
},
ReadonlyPaths: []string{
"/proc/bus",
"/proc/fs",
"/proc/irq",
"/proc/sys",
"/proc/sysrq-trigger",
},
Namespaces: []specs.LinuxNamespace{
{Type: specs.MountNamespace},
{Type: specs.NetworkNamespace},
{Type: specs.UTSNamespace},
{Type: specs.PIDNamespace},
{Type: specs.IPCNamespace},
},
// Devices implicitly contains the following devices:
// null, zero, full, random, urandom, tty, console, and ptmx.
// ptmx is a bind mount or symlink of the container's ptmx.
// See also: https://github.com/opencontainers/runtime-spec/blob/master/config-linux.md#default-devices
Devices: []specs.LinuxDevice{},
Resources: &specs.LinuxResources{
Devices: []specs.LinuxDeviceCgroup{
{
Allow: false,
Access: "rwm",
},
{
Allow: true,
Type: "c",
Major: iPtr(1),
Minor: iPtr(5),
Access: "rwm",
},
{
Allow: true,
Type: "c",
Major: iPtr(1),
Minor: iPtr(3),
Access: "rwm",
},
{
Allow: true,
Type: "c",
Major: iPtr(1),
Minor: iPtr(9),
Access: "rwm",
},
{
Allow: true,
Type: "c",
Major: iPtr(1),
Minor: iPtr(8),
Access: "rwm",
},
{
Allow: true,
Type: "c",
Major: iPtr(5),
Minor: iPtr(0),
Access: "rwm",
},
{
Allow: true,
Type: "c",
Major: iPtr(5),
Minor: iPtr(1),
Access: "rwm",
},
{
Allow: false,
Type: "c",
Major: iPtr(10),
Minor: iPtr(229),
Access: "rwm",
},
},
},
},
}
}
|
