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|
package libpod
import (
"context"
"errors"
"fmt"
"os"
"path/filepath"
"github.com/containers/common/libimage"
"github.com/containers/common/libnetwork/types"
"github.com/containers/podman/v4/libpod/define"
"github.com/containers/podman/v4/pkg/errorhandling"
"github.com/containers/podman/v4/pkg/rootless"
"github.com/containers/podman/v4/pkg/util"
"github.com/containers/storage"
"github.com/sirupsen/logrus"
)
// removeAllDirs removes all Podman storage directories. It is intended to be
// used as a backup for reset() when that function cannot be used due to
// failures in initializing libpod.
// It does not expect that all the directories match what is in use by Podman,
// as this is a common failure point for `system reset`. As such, our ability to
// interface with containers and pods is somewhat limited.
// This function assumes that we do not have a working c/storage store.
func (r *Runtime) removeAllDirs() error {
var lastErr error
// Grab the runtime alive lock.
// This ensures that no other Podman process can run while we are doing
// a reset, so no race conditions with containers/pods/etc being created
// while we are resetting storage.
// TODO: maybe want a helper for getting the path? This is duped from
// runtime.go
runtimeAliveLock := filepath.Join(r.config.Engine.TmpDir, "alive.lck")
aliveLock, err := storage.GetLockfile(runtimeAliveLock)
if err != nil {
logrus.Errorf("Lock runtime alive lock %s: %v", runtimeAliveLock, err)
} else {
aliveLock.Lock()
defer aliveLock.Unlock()
}
// We do not have a store - so we can't really try and remove containers
// or pods or volumes...
// Try and remove the directories, in hopes that they are unmounted.
// This is likely to fail but it's the best we can do.
// Volume path
if err := os.RemoveAll(r.config.Engine.VolumePath); err != nil {
lastErr = fmt.Errorf("removing volume path: %w", err)
}
// Tmpdir
if err := os.RemoveAll(r.config.Engine.TmpDir); err != nil {
if lastErr != nil {
logrus.Errorf("Reset: %v", lastErr)
}
lastErr = fmt.Errorf("removing tmp dir: %w", err)
}
// Runroot
if err := os.RemoveAll(r.storageConfig.RunRoot); err != nil {
if lastErr != nil {
logrus.Errorf("Reset: %v", lastErr)
}
lastErr = fmt.Errorf("removing run root: %w", err)
}
// Static dir
if err := os.RemoveAll(r.config.Engine.StaticDir); err != nil {
if lastErr != nil {
logrus.Errorf("Reset: %v", lastErr)
}
lastErr = fmt.Errorf("removing static dir: %w", err)
}
// Graph root
if err := os.RemoveAll(r.storageConfig.GraphRoot); err != nil {
if lastErr != nil {
logrus.Errorf("Reset: %v", lastErr)
}
lastErr = fmt.Errorf("removing graph root: %w", err)
}
return lastErr
}
// Reset removes all storage
func (r *Runtime) reset(ctx context.Context) error {
var timeout *uint
pods, err := r.GetAllPods()
if err != nil {
return err
}
for _, p := range pods {
if err := r.RemovePod(ctx, p, true, true, timeout); err != nil {
if errors.Is(err, define.ErrNoSuchPod) {
continue
}
logrus.Errorf("Removing Pod %s: %v", p.ID(), err)
}
}
ctrs, err := r.GetAllContainers()
if err != nil {
return err
}
for _, c := range ctrs {
if err := r.RemoveContainer(ctx, c, true, true, timeout); err != nil {
if err := r.RemoveStorageContainer(c.ID(), true); err != nil {
if errors.Is(err, define.ErrNoSuchCtr) {
continue
}
logrus.Errorf("Removing container %s: %v", c.ID(), err)
}
}
}
if err := r.stopPauseProcess(); err != nil {
logrus.Errorf("Stopping pause process: %v", err)
}
rmiOptions := &libimage.RemoveImagesOptions{Filters: []string{"readonly=false"}}
if _, rmiErrors := r.LibimageRuntime().RemoveImages(ctx, nil, rmiOptions); rmiErrors != nil {
return errorhandling.JoinErrors(rmiErrors)
}
volumes, err := r.state.AllVolumes()
if err != nil {
return err
}
for _, v := range volumes {
if err := r.RemoveVolume(ctx, v, true, timeout); err != nil {
if errors.Is(err, define.ErrNoSuchVolume) {
continue
}
logrus.Errorf("Removing volume %s: %v", v.config.Name, err)
}
}
// remove all networks
nets, err := r.network.NetworkList()
if err != nil {
return err
}
for _, net := range nets {
// do not delete the default network
if net.Name == r.network.DefaultNetworkName() {
continue
}
// ignore not exists errors because of the TOCTOU problem
if err := r.network.NetworkRemove(net.Name); err != nil && !errors.Is(err, types.ErrNoSuchNetwork) {
logrus.Errorf("Removing network %s: %v", net.Name, err)
}
}
xdgRuntimeDir := filepath.Clean(os.Getenv("XDG_RUNTIME_DIR"))
_, prevError := r.store.Shutdown(true)
graphRoot := filepath.Clean(r.store.GraphRoot())
if graphRoot == xdgRuntimeDir {
if prevError != nil {
logrus.Error(prevError)
}
prevError = fmt.Errorf("failed to remove runtime graph root dir %s, since it is the same as XDG_RUNTIME_DIR", graphRoot)
} else {
if err := os.RemoveAll(graphRoot); err != nil {
if prevError != nil {
logrus.Error(prevError)
}
prevError = err
}
}
runRoot := filepath.Clean(r.store.RunRoot())
if runRoot == xdgRuntimeDir {
if prevError != nil {
logrus.Error(prevError)
}
prevError = fmt.Errorf("failed to remove runtime root dir %s, since it is the same as XDG_RUNTIME_DIR", runRoot)
} else {
if err := os.RemoveAll(runRoot); err != nil {
if prevError != nil {
logrus.Error(prevError)
}
prevError = err
}
}
runtimeDir, err := util.GetRuntimeDir()
if err != nil {
return err
}
tempDir := r.config.Engine.TmpDir
if tempDir == runtimeDir {
tempDir = filepath.Join(tempDir, "containers")
}
if filepath.Clean(tempDir) == xdgRuntimeDir {
if prevError != nil {
logrus.Error(prevError)
}
prevError = fmt.Errorf("failed to remove runtime tmpdir %s, since it is the same as XDG_RUNTIME_DIR", tempDir)
} else {
if err := os.RemoveAll(tempDir); err != nil {
if prevError != nil {
logrus.Error(prevError)
}
prevError = err
}
}
if storageConfPath, err := storage.DefaultConfigFile(rootless.IsRootless()); err == nil {
if _, err = os.Stat(storageConfPath); err == nil {
fmt.Printf("A storage.conf file exists at %s\n", storageConfPath)
fmt.Println("You should remove this file if you did not modify the configuration.")
}
} else {
if prevError != nil {
logrus.Error(prevError)
}
prevError = err
}
return prevError
}
|
