vendor: update opencontainers/selinux v1.3.1

full diff: https://github.com/opencontainers/selinux/compare/5215b1806f52b1fcc2070a8826c542c9d33cd3cf...v1.3.1

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

vendor.conf

@@ -6,7 +6,7 @@ github.com/opencontainers/runtime-spec  29686dbc5559d93fb1ef402eeda3e35c38d75af4
 # Core libcontainer functionality.
 github.com/checkpoint-restore/go-criu   17b0214f6c48980c45dc47ecb0cfd6d9e02df723 # v3.11
 github.com/mrunalp/fileutils            7d4729fb36185a7c1719923406c9d40e54fb93c7
-github.com/opencontainers/selinux       5215b1806f52b1fcc2070a8826c542c9d33cd3cf # v1.3.0 (+ CVE-2019-16884)
+github.com/opencontainers/selinux       4defb1c884d2f4f9c890c615380f20f7fc215cf3 # v1.3.1
 github.com/seccomp/libseccomp-golang    689e3c1541a84461afc49c1c87352a6cedf72e9c # v0.9.1
 github.com/sirupsen/logrus              8bdbc7bcc01dcbb8ec23dc8a28e332258d25251f # v1.4.1
 github.com/syndtr/gocapability          d98352740cb2c55f81556b63d4a1ec64c5a319c2

vendor/github.com/opencontainers/selinux/go-selinux/selinux_linux.go

@@ -7,7 +7,6 @@ import (
 	"bytes"
 	"crypto/rand"
 	"encoding/binary"
-	"errors"
 	"fmt"
 	"io"
 	"io/ioutil"
@@ -19,6 +18,7 @@ import (
 	"sync"
 	"syscall"
 
+	"github.com/pkg/errors"
 	"golang.org/x/sys/unix"
 )
 
@@ -289,7 +289,10 @@ func SetFileLabel(fpath string, label string) error {
 	if fpath == "" {
 		return ErrEmptyPath
 	}
-	return lsetxattr(fpath, xattrNameSelinux, []byte(label), 0)
+	if err := lsetxattr(fpath, xattrNameSelinux, []byte(label), 0); err != nil {
+		return errors.Wrapf(err, "failed to set file label on %s", fpath)
+	}
+	return nil
 }
 
 // FileLabel returns the SELinux label for this path or returns an error.
@@ -370,7 +373,10 @@ func writeCon(fpath string, val string) error {
 	} else {
 		_, err = out.Write(nil)
 	}
-	return err
+	if err != nil {
+		return errors.Wrapf(err, "failed to set %s on procfs", fpath)
+	}
+	return nil
 }
 
 /*

vendor/github.com/opencontainers/selinux/go.mod

@@ -0,0 +1,8 @@
+module github.com/opencontainers/selinux
+
+go 1.13
+
+require (
+	github.com/pkg/errors v0.8.1
+	golang.org/x/sys v0.0.0-20191115151921-52ab43148777
+)