build(deps): bump github.com/containers/storage from 1.15.8 to 1.16.0

Bumps [github.com/containers/storage](https://github.com/containers/storage) from 1.15.8 to 1.16.0.
- [Release notes](https://github.com/containers/storage/releases)
- [Changelog](https://github.com/containers/storage/blob/master/docs/containers-storage-changes.md)
- [Commits](https://github.com/containers/storage/compare/v1.15.8...v1.16.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

vendor/github.com/containers/storage/pkg/homedir/homedir_linux.go

@@ -1,23 +1,96 @@
-// +build linux
-
 package homedir
 
-import (
-	"os"
+// Copyright 2013-2018 Docker, Inc.
+// NOTE: this package has originally been copied from github.com/docker/docker.
 
-	"github.com/containers/storage/pkg/idtools"
+import (
+	"errors"
+	"os"
+	"path/filepath"
+	"strings"
 )
 
-// GetStatic returns the home directory for the current user without calling
-// os/user.Current(). This is useful for static-linked binary on glibc-based
-// system, because a call to os/user.Current() in a static binary leads to
-// segfault due to a glibc issue that won't be fixed in a short term.
-// (#29344, golang/go#13470, https://sourceware.org/bugzilla/show_bug.cgi?id=19341)
-func GetStatic() (string, error) {
-	uid := os.Getuid()
-	usr, err := idtools.LookupUID(uid)
-	if err != nil {
-		return "", err
+// GetRuntimeDir returns XDG_RUNTIME_DIR.
+// XDG_RUNTIME_DIR is typically configured via pam_systemd.
+// GetRuntimeDir returns non-nil error if XDG_RUNTIME_DIR is not set.
+//
+// See also https://standards.freedesktop.org/basedir-spec/latest/ar01s03.html
+func GetRuntimeDir() (string, error) {
+	if xdgRuntimeDir := os.Getenv("XDG_RUNTIME_DIR"); xdgRuntimeDir != "" {
+		return xdgRuntimeDir, nil
 	}
-	return usr.Home, nil
+	return "", errors.New("could not get XDG_RUNTIME_DIR")
+}
+
+// StickRuntimeDirContents sets the sticky bit on files that are under
+// XDG_RUNTIME_DIR, so that the files won't be periodically removed by the system.
+//
+// StickyRuntimeDir returns slice of sticked files.
+// StickyRuntimeDir returns nil error if XDG_RUNTIME_DIR is not set.
+//
+// See also https://standards.freedesktop.org/basedir-spec/latest/ar01s03.html
+func StickRuntimeDirContents(files []string) ([]string, error) {
+	runtimeDir, err := GetRuntimeDir()
+	if err != nil {
+		// ignore error if runtimeDir is empty
+		return nil, nil
+	}
+	runtimeDir, err = filepath.Abs(runtimeDir)
+	if err != nil {
+		return nil, err
+	}
+	var sticked []string
+	for _, f := range files {
+		f, err = filepath.Abs(f)
+		if err != nil {
+			return sticked, err
+		}
+		if strings.HasPrefix(f, runtimeDir+"/") {
+			if err = stick(f); err != nil {
+				return sticked, err
+			}
+			sticked = append(sticked, f)
+		}
+	}
+	return sticked, nil
+}
+
+func stick(f string) error {
+	st, err := os.Stat(f)
+	if err != nil {
+		return err
+	}
+	m := st.Mode()
+	m |= os.ModeSticky
+	return os.Chmod(f, m)
+}
+
+// GetDataHome returns XDG_DATA_HOME.
+// GetDataHome returns $HOME/.local/share and nil error if XDG_DATA_HOME is not set.
+//
+// See also https://standards.freedesktop.org/basedir-spec/latest/ar01s03.html
+func GetDataHome() (string, error) {
+	if xdgDataHome := os.Getenv("XDG_DATA_HOME"); xdgDataHome != "" {
+		return xdgDataHome, nil
+	}
+	home := os.Getenv("HOME")
+	if home == "" {
+		return "", errors.New("could not get either XDG_DATA_HOME or HOME")
+	}
+	return filepath.Join(home, ".local", "share"), nil
+}
+
+// GetConfigHome returns XDG_CONFIG_HOME.
+// GetConfigHome returns $HOME/.config and nil error if XDG_CONFIG_HOME is not set.
+//
+// See also https://standards.freedesktop.org/basedir-spec/latest/ar01s03.html
+func GetConfigHome() (string, error) {
+	if xdgConfigHome := os.Getenv("XDG_CONFIG_HOME"); xdgConfigHome != "" {
+		return xdgConfigHome, nil
+	}
+	home := os.Getenv("HOME")
+	if home == "" {
+		return "", errors.New("could not get either XDG_CONFIG_HOME or HOME")
+	}
+	return filepath.Join(home, ".config"), nil
 }

vendor/github.com/containers/storage/pkg/homedir/homedir_others.go

@@ -2,12 +2,29 @@
 
 package homedir
 
+// Copyright 2013-2018 Docker, Inc.
+// NOTE: this package has originally been copied from github.com/docker/docker.
+
 import (
 	"errors"
 )
 
-// GetStatic is not needed for non-linux systems.
-// (Precisely, it is needed only for glibc-based linux systems.)
-func GetStatic() (string, error) {
-	return "", errors.New("homedir.GetStatic() is not supported on this system")
+// GetRuntimeDir is unsupported on non-linux system.
+func GetRuntimeDir() (string, error) {
+	return "", errors.New("homedir.GetRuntimeDir() is not supported on this system")
+}
+
+// StickRuntimeDirContents is unsupported on non-linux system.
+func StickRuntimeDirContents(files []string) ([]string, error) {
+	return nil, errors.New("homedir.StickRuntimeDirContents() is not supported on this system")
+}
+
+// GetDataHome is unsupported on non-linux system.
+func GetDataHome() (string, error) {
+	return "", errors.New("homedir.GetDataHome() is not supported on this system")
+}
+
+// GetConfigHome is unsupported on non-linux system.
+func GetConfigHome() (string, error) {
+	return "", errors.New("homedir.GetConfigHome() is not supported on this system")
 }

vendor/github.com/containers/storage/pkg/homedir/homedir_unix.go

@@ -2,10 +2,12 @@
 
 package homedir
 
+// Copyright 2013-2018 Docker, Inc.
+// NOTE: this package has originally been copied from github.com/docker/docker.
+
 import (
 	"os"
-
-	"github.com/opencontainers/runc/libcontainer/user"
+	"os/user"
 )
 
 // Key returns the env var name for the user's home dir based on
@@ -17,11 +19,16 @@ func Key() string {
 // Get returns the home directory of the current user with the help of
 // environment variables depending on the target operating system.
 // Returned path should be used with "path/filepath" to form new paths.
+//
+// If linking statically with cgo enabled against glibc, ensure the
+// osusergo build tag is used.
+//
+// If needing to do nss lookups, do not disable cgo or set osusergo.
 func Get() string {
 	home := os.Getenv(Key())
 	if home == "" {
-		if u, err := user.CurrentUser(); err == nil {
-			return u.Home
+		if u, err := user.Current(); err == nil {
+			return u.HomeDir
 		}
 	}
 	return home

vendor/github.com/containers/storage/pkg/homedir/homedir_windows.go

@@ -1,5 +1,8 @@
 package homedir
 
+// Copyright 2013-2018 Docker, Inc.
+// NOTE: this package has originally been copied from github.com/docker/docker.
+
 import (
 	"os"
 )

vendor/github.com/containers/storage/pkg/reexec/command_linux.go

@@ -5,9 +5,6 @@ package reexec
 import (
 	"context"
 	"os/exec"
-	"syscall"
-
-	"golang.org/x/sys/unix"
 )
 
 // Self returns the path to the current process's binary.
@@ -16,28 +13,20 @@ func Self() string {
 	return "/proc/self/exe"
 }
 
-// Command returns *exec.Cmd which has Path as current binary. Also it setting
-// SysProcAttr.Pdeathsig to SIGTERM.
+// Command returns *exec.Cmd which has Path as current binary.
 // This will use the in-memory version (/proc/self/exe) of the current binary,
 // it is thus safe to delete or replace the on-disk binary (os.Args[0]).
 func Command(args ...string) *exec.Cmd {
 	cmd := exec.Command(Self())
 	cmd.Args = args
-	cmd.SysProcAttr = &syscall.SysProcAttr{
-		Pdeathsig: unix.SIGTERM,
-	}
 	return cmd
 }
 
-// CommandContext returns *exec.Cmd which has Path as current binary, and also
-// sets SysProcAttr.Pdeathsig to SIGTERM.
+// CommandContext returns *exec.Cmd which has Path as current binary.
 // This will use the in-memory version (/proc/self/exe) of the current binary,
 // it is thus safe to delete or replace the on-disk binary (os.Args[0]).
 func CommandContext(ctx context.Context, args ...string) *exec.Cmd {
 	cmd := exec.CommandContext(ctx, Self())
 	cmd.Args = args
-	cmd.SysProcAttr = &syscall.SysProcAttr{
-		Pdeathsig: unix.SIGTERM,
-	}
 	return cmd
 }