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Rootless fs driver inherits from FS and may overwrite its methods. All files and directories created by this driver are under a path accessible for the current user, typically this path is defined by the environment variable `XDG_RUNTIME_DIR`, if this variable is not defined, the default path `/run/user/$UID` is used instead, where $UID is the current user ID. fixes #2416 Signed-off-by: Julio Montes <julio.montes@intel.com>
49 lines
1.2 KiB
Go
49 lines
1.2 KiB
Go
// Copyright (c) 2020 Intel Corporation
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//
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// SPDX-License-Identifier: Apache-2.0
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//
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package fs
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import (
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"fmt"
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"os"
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"path/filepath"
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persistapi "github.com/kata-containers/runtime/virtcontainers/persist/api"
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)
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// default xdg runtime directory just in case XDG_RUNTIME_DIR is not set
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var defaultXdgRuntimeDir = fmt.Sprintf("/run/user/%d", os.Getuid())
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type RootlessFS struct {
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// inherit from FS. Overwrite if needed.
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*FS
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}
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func RootlessInit() (persistapi.PersistDriver, error) {
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driver, err := Init()
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if err != nil {
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return nil, fmt.Errorf("Could not create Rootless FS driver: %v", err)
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}
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fsDriver, ok := driver.(*FS)
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if !ok {
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return nil, fmt.Errorf("Could not create Rootless FS driver")
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}
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// XDG_RUNTIME_DIR defines the base directory relative to
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// which user-specific non-essential runtime files are stored.
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rootlessDir := os.Getenv("XDG_RUNTIME_DIR")
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if rootlessDir == "" {
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rootlessDir = defaultXdgRuntimeDir
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fsLog.WithField("default-runtime-dir", defaultXdgRuntimeDir).
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Warnf("XDG_RUNTIME_DIR variable is not set. Using default runtime directory")
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}
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fsDriver.storageRootPath = filepath.Join(rootlessDir, fsDriver.storageRootPath)
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fsDriver.driverName = "rootlessfs"
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return &RootlessFS{fsDriver}, nil
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}
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