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package config
import (
"os"
"path/filepath"
"github.com/containers/libpod/libpod/define"
"github.com/containers/libpod/libpod/events"
"github.com/containers/libpod/pkg/cgroups"
"github.com/containers/libpod/pkg/rootless"
"github.com/containers/libpod/pkg/util"
"github.com/containers/storage"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)
const (
// _defaultGraphRoot points to the default path of the graph root.
_defaultGraphRoot = "/var/lib/containers/storage"
// _defaultRootlessSignaturePolicyPath points to the default path of the
// rootless policy.json file.
_defaultRootlessSignaturePolicyPath = ".config/containers/policy.json"
)
// defaultConfigFromMemory returns a default libpod configuration. Note that the
// config is different for root and rootless. It also parses the storage.conf.
func defaultConfigFromMemory() (*Config, error) {
c := new(Config)
tmp, err := defaultTmpDir()
if err != nil {
return nil, err
}
c.TmpDir = tmp
c.EventsLogFilePath = filepath.Join(c.TmpDir, "events", "events.log")
storeOpts, err := storage.DefaultStoreOptions(rootless.IsRootless(), rootless.GetRootlessUID())
if err != nil {
return nil, err
}
if storeOpts.GraphRoot == "" {
logrus.Warnf("Storage configuration is unset - using hardcoded default graph root %q", _defaultGraphRoot)
storeOpts.GraphRoot = _defaultGraphRoot
}
c.StaticDir = filepath.Join(storeOpts.GraphRoot, "libpod")
c.VolumePath = filepath.Join(storeOpts.GraphRoot, "volumes")
c.StorageConfig = storeOpts
c.ImageDefaultTransport = _defaultTransport
c.StateType = define.BoltDBStateStore
c.OCIRuntime = "runc"
// If we're running on cgroups v2, default to using crun.
if onCgroupsv2, _ := cgroups.IsCgroup2UnifiedMode(); onCgroupsv2 {
c.OCIRuntime = "crun"
}
c.OCIRuntimes = map[string][]string{
"runc": {
"/usr/bin/runc",
"/usr/sbin/runc",
"/usr/local/bin/runc",
"/usr/local/sbin/runc",
"/sbin/runc",
"/bin/runc",
"/usr/lib/cri-o-runc/sbin/runc",
"/run/current-system/sw/bin/runc",
},
"crun": {
"/usr/bin/crun",
"/usr/sbin/crun",
"/usr/local/bin/crun",
"/usr/local/sbin/crun",
"/sbin/crun",
"/bin/crun",
"/run/current-system/sw/bin/crun",
},
}
c.ConmonPath = []string{
"/usr/libexec/podman/conmon",
"/usr/local/libexec/podman/conmon",
"/usr/local/lib/podman/conmon",
"/usr/bin/conmon",
"/usr/sbin/conmon",
"/usr/local/bin/conmon",
"/usr/local/sbin/conmon",
"/run/current-system/sw/bin/conmon",
}
c.ConmonEnvVars = []string{
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
}
c.RuntimeSupportsJSON = []string{
"crun",
"runc",
}
c.RuntimeSupportsNoCgroups = []string{"crun"}
c.InitPath = define.DefaultInitPath
c.CgroupManager = define.SystemdCgroupsManager
c.MaxLogSize = -1
c.NoPivotRoot = false
c.CNIConfigDir = _etcDir + "/cni/net.d/"
c.CNIPluginDir = []string{
"/usr/libexec/cni",
"/usr/lib/cni",
"/usr/local/lib/cni",
"/opt/cni/bin",
}
c.CNIDefaultNetwork = "podman"
c.InfraCommand = define.DefaultInfraCommand
c.InfraImage = define.DefaultInfraImage
c.EnablePortReservation = true
c.EnableLabeling = true
c.NumLocks = 2048
c.EventsLogger = events.DefaultEventerType.String()
c.DetachKeys = define.DefaultDetachKeys
// TODO - ideally we should expose a `type LockType string` along with
// constants.
c.LockType = "shm"
if rootless.IsRootless() {
home, err := util.HomeDir()
if err != nil {
return nil, err
}
sigPath := filepath.Join(home, _defaultRootlessSignaturePolicyPath)
if _, err := os.Stat(sigPath); err == nil {
c.SignaturePolicyPath = sigPath
}
}
return c, nil
}
func defaultTmpDir() (string, error) {
if !rootless.IsRootless() {
return "/var/run/libpod", nil
}
runtimeDir, err := util.GetRuntimeDir()
if err != nil {
return "", err
}
libpodRuntimeDir := filepath.Join(runtimeDir, "libpod")
if err := os.Mkdir(libpodRuntimeDir, 0700|os.ModeSticky); err != nil {
if !os.IsExist(err) {
return "", errors.Wrapf(err, "cannot mkdir %s", libpodRuntimeDir)
} else if err := os.Chmod(libpodRuntimeDir, 0700|os.ModeSticky); err != nil {
// The directory already exist, just set the sticky bit
return "", errors.Wrapf(err, "could not set sticky bit on %s", libpodRuntimeDir)
}
}
return filepath.Join(libpodRuntimeDir, "tmp"), nil
}
|
