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package libpodruntime
import (
"fmt"
"os"
"path/filepath"
"github.com/containers/libpod/libpod"
"github.com/containers/libpod/pkg/rootless"
"github.com/containers/libpod/pkg/util"
"github.com/containers/storage"
"github.com/pkg/errors"
"github.com/urfave/cli"
)
// GetRuntime generates a new libpod runtime configured by command line options
func GetRuntime(c *cli.Context) (*libpod.Runtime, error) {
storageOpts, err := GetDefaultStoreOptions()
if err != nil {
return nil, err
}
return GetRuntimeWithStorageOpts(c, &storageOpts)
}
// GetContainerRuntime generates a new libpod runtime configured by command line options for containers
func GetContainerRuntime(c *cli.Context) (*libpod.Runtime, error) {
mappings, err := util.ParseIDMapping(c.StringSlice("uidmap"), c.StringSlice("gidmap"), c.String("subuidmap"), c.String("subgidmap"))
if err != nil {
return nil, err
}
storageOpts, err := GetDefaultStoreOptions()
if err != nil {
return nil, err
}
storageOpts.UIDMap = mappings.UIDMap
storageOpts.GIDMap = mappings.GIDMap
return GetRuntimeWithStorageOpts(c, &storageOpts)
}
func GetRootlessStorageOpts() (storage.StoreOptions, error) {
var opts storage.StoreOptions
rootlessRuntime, err := libpod.GetRootlessRuntimeDir()
if err != nil {
return opts, err
}
opts.RunRoot = filepath.Join(rootlessRuntime, "run")
dataDir := os.Getenv("XDG_DATA_HOME")
if dataDir == "" {
home := os.Getenv("HOME")
if home == "" {
return opts, fmt.Errorf("neither XDG_DATA_HOME nor HOME was set non-empty")
}
// runc doesn't like symlinks in the rootfs path, and at least
// on CoreOS /home is a symlink to /var/home, so resolve any symlink.
resolvedHome, err := filepath.EvalSymlinks(home)
if err != nil {
return opts, errors.Wrapf(err, "cannot resolve %s", home)
}
dataDir = filepath.Join(resolvedHome, ".local", "share")
}
opts.GraphRoot = filepath.Join(dataDir, "containers", "storage")
opts.GraphDriverName = "vfs"
return opts, nil
}
func GetDefaultStoreOptions() (storage.StoreOptions, error) {
storageOpts := storage.DefaultStoreOptions
if rootless.IsRootless() {
var err error
storageOpts, err = GetRootlessStorageOpts()
if err != nil {
return storageOpts, err
}
storageConf := filepath.Join(os.Getenv("HOME"), ".config/containers/storage.conf")
if _, err := os.Stat(storageConf); err == nil {
storage.ReloadConfigurationFile(storageConf, &storageOpts)
}
}
return storageOpts, nil
}
// GetRuntime generates a new libpod runtime configured by command line options
func GetRuntimeWithStorageOpts(c *cli.Context, storageOpts *storage.StoreOptions) (*libpod.Runtime, error) {
options := []libpod.RuntimeOption{}
if c.GlobalIsSet("root") {
storageOpts.GraphRoot = c.GlobalString("root")
}
if c.GlobalIsSet("runroot") {
storageOpts.RunRoot = c.GlobalString("runroot")
}
if c.GlobalIsSet("storage-driver") {
storageOpts.GraphDriverName = c.GlobalString("storage-driver")
}
if c.GlobalIsSet("storage-opt") {
storageOpts.GraphDriverOptions = c.GlobalStringSlice("storage-opt")
}
options = append(options, libpod.WithStorageConfig(*storageOpts))
// TODO CLI flags for image config?
// TODO CLI flag for signature policy?
if c.GlobalIsSet("namespace") {
options = append(options, libpod.WithNamespace(c.GlobalString("namespace")))
}
if c.GlobalIsSet("runtime") {
options = append(options, libpod.WithOCIRuntime(c.GlobalString("runtime")))
}
if c.GlobalIsSet("conmon") {
options = append(options, libpod.WithConmonPath(c.GlobalString("conmon")))
}
if c.GlobalIsSet("tmpdir") {
options = append(options, libpod.WithTmpDir(c.GlobalString("tmpdir")))
}
if c.GlobalIsSet("cgroup-manager") {
options = append(options, libpod.WithCgroupManager(c.GlobalString("cgroup-manager")))
} else {
if rootless.IsRootless() {
options = append(options, libpod.WithCgroupManager("cgroupfs"))
}
}
// TODO flag to set libpod static dir?
// TODO flag to set libpod tmp dir?
if c.GlobalIsSet("cni-config-dir") {
options = append(options, libpod.WithCNIConfigDir(c.GlobalString("cni-config-dir")))
}
if c.GlobalIsSet("default-mounts-file") {
options = append(options, libpod.WithDefaultMountsFile(c.GlobalString("default-mounts-file")))
}
options = append(options, libpod.WithHooksDir(c.GlobalString("hooks-dir-path"), c.GlobalIsSet("hooks-dir-path")))
// TODO flag to set CNI plugins dir?
// Pod create options
if c.IsSet("infra-image") {
options = append(options, libpod.WithDefaultInfraImage(c.String("infra-image")))
}
if c.IsSet("infra-command") {
options = append(options, libpod.WithDefaultInfraCommand(c.String("infra-command")))
}
if c.IsSet("config") {
return libpod.NewRuntimeFromConfig(c.String("config"), options...)
}
return libpod.NewRuntime(options...)
}
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