update dependencies

Ran a `go get -u` and bumped K8s deps to 1.15.0.

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

6 files changed, 142 insertions, 89 deletions

diff --git a/vendor/github.com/coreos/go-iptables/iptables/iptables.go b/vendor/github.com/coreos/go-iptables/iptables/iptables.go
index 8db2597a4..9601bc78a 100644
--- a/vendor/github.com/coreos/go-iptables/iptables/iptables.go
+++ b/vendor/github.com/coreos/go-iptables/iptables/iptables.go
@@ -31,6 +31,7 @@ type Error struct {
 	exec.ExitError
 	cmd        exec.Cmd
 	msg        string
+	proto      Protocol
 	exitStatus *int //for overriding
 }
 
@@ -48,8 +49,8 @@ func (e *Error) Error() string {
 // IsNotExist returns true if the error is due to the chain or rule not existing
 func (e *Error) IsNotExist() bool {
 	return e.ExitStatus() == 1 &&
-		(e.msg == "iptables: Bad rule (does a matching rule exist in that chain?).\n" ||
-			e.msg == "iptables: No chain/target/match by that name.\n")
+		(e.msg == fmt.Sprintf("%s: Bad rule (does a matching rule exist in that chain?).\n", getIptablesCommand(e.proto)) ||
+			e.msg == fmt.Sprintf("%s: No chain/target/match by that name.\n", getIptablesCommand(e.proto)))
 }
 
 // Protocol to differentiate between IPv4 and IPv6
@@ -282,7 +283,8 @@ func (ipt *IPTables) executeList(args []string) ([]string, error) {
 		v := 1
 		return nil, &Error{
 			cmd:        exec.Cmd{Args: args},
-			msg:        "iptables: No chain/target/match by that name.",
+			msg:        fmt.Sprintf("%s: No chain/target/match by that name.\n", getIptablesCommand(ipt.proto)),
+			proto:      ipt.proto,
 			exitStatus: &v,
 		}
 	}
@@ -385,7 +387,7 @@ func (ipt *IPTables) runWithOutput(args []string, stdout io.Writer) error {
 	if err := cmd.Run(); err != nil {
 		switch e := err.(type) {
 		case *exec.ExitError:
-			return &Error{*e, cmd, stderr.String(), nil}
+			return &Error{*e, cmd, stderr.String(), ipt.proto, nil}
 		default:
 			return err
 		}
diff --git a/vendor/github.com/coreos/go-systemd/dbus/dbus.go b/vendor/github.com/coreos/go-systemd/dbus/dbus.go
index 1d54810af..f652582e6 100644
--- a/vendor/github.com/coreos/go-systemd/dbus/dbus.go
+++ b/vendor/github.com/coreos/go-systemd/dbus/dbus.go
@@ -143,7 +143,7 @@ func NewUserConnection() (*Conn, error) {
 func NewSystemdConnection() (*Conn, error) {
 	return NewConnection(func() (*dbus.Conn, error) {
 		// We skip Hello when talking directly to systemd.
-		return dbusAuthConnection(func() (*dbus.Conn, error) {
+		return dbusAuthConnection(func(opts ...dbus.ConnOption) (*dbus.Conn, error) {
 			return dbus.Dial("unix:path=/run/systemd/private")
 		})
 	})
@@ -201,7 +201,7 @@ func (c *Conn) GetManagerProperty(prop string) (string, error) {
 	return variant.String(), nil
 }
 
-func dbusAuthConnection(createBus func() (*dbus.Conn, error)) (*dbus.Conn, error) {
+func dbusAuthConnection(createBus func(opts ...dbus.ConnOption) (*dbus.Conn, error)) (*dbus.Conn, error) {
 	conn, err := createBus()
 	if err != nil {
 		return nil, err
@@ -221,7 +221,7 @@ func dbusAuthConnection(createBus func() (*dbus.Conn, error)) (*dbus.Conn, error
 	return conn, nil
 }
 
-func dbusAuthHelloConnection(createBus func() (*dbus.Conn, error)) (*dbus.Conn, error) {
+func dbusAuthHelloConnection(createBus func(opts ...dbus.ConnOption) (*dbus.Conn, error)) (*dbus.Conn, error) {
 	conn, err := dbusAuthConnection(createBus)
 	if err != nil {
 		return nil, err
diff --git a/vendor/github.com/coreos/go-systemd/dbus/methods.go b/vendor/github.com/coreos/go-systemd/dbus/methods.go
index 0b4207229..5859583eb 100644
--- a/vendor/github.com/coreos/go-systemd/dbus/methods.go
+++ b/vendor/github.com/coreos/go-systemd/dbus/methods.go
@@ -117,13 +117,13 @@ func (c *Conn) TryRestartUnit(name string, mode string, ch chan<- string) (int,
 	return c.startJob(ch, "org.freedesktop.systemd1.Manager.TryRestartUnit", name, mode)
 }
 
-// ReloadOrRestart attempts a reload if the unit supports it and use a restart
+// ReloadOrRestartUnit attempts a reload if the unit supports it and use a restart
 // otherwise.
 func (c *Conn) ReloadOrRestartUnit(name string, mode string, ch chan<- string) (int, error) {
 	return c.startJob(ch, "org.freedesktop.systemd1.Manager.ReloadOrRestartUnit", name, mode)
 }
 
-// ReloadOrTryRestart attempts a reload if the unit supports it and use a "Try"
+// ReloadOrTryRestartUnit attempts a reload if the unit supports it and use a "Try"
 // flavored restart otherwise.
 func (c *Conn) ReloadOrTryRestartUnit(name string, mode string, ch chan<- string) (int, error) {
 	return c.startJob(ch, "org.freedesktop.systemd1.Manager.ReloadOrTryRestartUnit", name, mode)
@@ -192,11 +192,17 @@ func (c *Conn) GetUnitProperties(unit string) (map[string]interface{}, error) {
 	return c.getProperties(path, "org.freedesktop.systemd1.Unit")
 }
 
-// GetUnitProperties takes the (escaped) unit path and returns all of its dbus object properties.
+// GetUnitPathProperties takes the (escaped) unit path and returns all of its dbus object properties.
 func (c *Conn) GetUnitPathProperties(path dbus.ObjectPath) (map[string]interface{}, error) {
 	return c.getProperties(path, "org.freedesktop.systemd1.Unit")
 }
 
+// GetAllProperties takes the (unescaped) unit name and returns all of its dbus object properties.
+func (c *Conn) GetAllProperties(unit string) (map[string]interface{}, error) {
+	path := unitPath(unit)
+	return c.getProperties(path, "")
+}
+
 func (c *Conn) getProperty(unit string, dbusInterface string, propertyName string) (*Property, error) {
 	var err error
 	var prop dbus.Variant
@@ -291,6 +297,8 @@ func (c *Conn) listUnitsInternal(f storeFunc) ([]UnitStatus, error) {
 // ListUnits returns an array with all currently loaded units. Note that
 // units may be known by multiple names at the same time, and hence there might
 // be more unit names loaded than actual units behind them.
+// Also note that a unit is only loaded if it is active and/or enabled.
+// Units that are both disabled and inactive will thus not be returned.
 func (c *Conn) ListUnits() ([]UnitStatus, error) {
 	return c.listUnitsInternal(c.sysobj.Call("org.freedesktop.systemd1.Manager.ListUnits", 0).Store)
 }
diff --git a/vendor/github.com/coreos/go-systemd/dbus/subscription.go b/vendor/github.com/coreos/go-systemd/dbus/subscription.go
index 70e63a6f1..f6d7a08a1 100644
--- a/vendor/github.com/coreos/go-systemd/dbus/subscription.go
+++ b/vendor/github.com/coreos/go-systemd/dbus/subscription.go
@@ -94,7 +94,7 @@ func (c *Conn) dispatch() {
 	}()
 }
 
-// Returns two unbuffered channels which will receive all changed units every
+// SubscribeUnits returns two unbuffered channels which will receive all changed units every
 // interval.  Deleted units are sent as nil.
 func (c *Conn) SubscribeUnits(interval time.Duration) (<-chan map[string]*UnitStatus, <-chan error) {
 	return c.SubscribeUnitsCustom(interval, 0, func(u1, u2 *UnitStatus) bool { return *u1 != *u2 }, nil)
diff --git a/vendor/github.com/coreos/go-systemd/journal/journal.go b/vendor/github.com/coreos/go-systemd/journal/journal.go
index ef85a3ba2..a0f4837a0 100644
--- a/vendor/github.com/coreos/go-systemd/journal/journal.go
+++ b/vendor/github.com/coreos/go-systemd/journal/journal.go
@@ -33,7 +33,10 @@ import (
 	"os"
 	"strconv"
 	"strings"
+	"sync"
+	"sync/atomic"
 	"syscall"
+	"unsafe"
 )
 
 // Priority of a journal message
@@ -50,19 +53,35 @@ const (
 	PriDebug
 )
 
-var conn net.Conn
+var (
+	// This can be overridden at build-time:
+	// https://github.com/golang/go/wiki/GcToolchainTricks#including-build-information-in-the-executable
+	journalSocket = "/run/systemd/journal/socket"
+
+	// unixConnPtr atomically holds the local unconnected Unix-domain socket.
+	// Concrete safe pointer type: *net.UnixConn
+	unixConnPtr unsafe.Pointer
+	// onceConn ensures that unixConnPtr is initialized exactly once.
+	onceConn sync.Once
+)
 
 func init() {
-	var err error
-	conn, err = net.Dial("unixgram", "/run/systemd/journal/socket")
-	if err != nil {
-		conn = nil
-	}
+	onceConn.Do(initConn)
 }
 
-// Enabled returns true if the local systemd journal is available for logging
+// Enabled checks whether the local systemd journal is available for logging.
 func Enabled() bool {
-	return conn != nil
+	onceConn.Do(initConn)
+
+	if (*net.UnixConn)(atomic.LoadPointer(&unixConnPtr)) == nil {
+		return false
+	}
+
+	if _, err := net.Dial("unixgram", journalSocket); err != nil {
+		return false
+	}
+
+	return true
 }
 
 // Send a message to the local systemd journal. vars is a map of journald
@@ -73,8 +92,14 @@ func Enabled() bool {
 // (http://www.freedesktop.org/software/systemd/man/systemd.journal-fields.html)
 // for more details.  vars may be nil.
 func Send(message string, priority Priority, vars map[string]string) error {
+	conn := (*net.UnixConn)(atomic.LoadPointer(&unixConnPtr))
 	if conn == nil {
-		return journalError("could not connect to journald socket")
+		return errors.New("could not initialize socket to journald")
+	}
+
+	socketAddr := &net.UnixAddr{
+		Name: journalSocket,
+		Net:  "unixgram",
 	}
 
 	data := new(bytes.Buffer)
@@ -84,32 +109,30 @@ func Send(message string, priority Priority, vars map[string]string) error {
 		appendVariable(data, k, v)
 	}
 
-	_, err := io.Copy(conn, data)
-	if err != nil && isSocketSpaceError(err) {
-		file, err := tempFd()
-		if err != nil {
-			return journalError(err.Error())
-		}
-		defer file.Close()
-		_, err = io.Copy(file, data)
-		if err != nil {
-			return journalError(err.Error())
-		}
-
-		rights := syscall.UnixRights(int(file.Fd()))
+	_, _, err := conn.WriteMsgUnix(data.Bytes(), nil, socketAddr)
+	if err == nil {
+		return nil
+	}
+	if !isSocketSpaceError(err) {
+		return err
+	}
 
-		/* this connection should always be a UnixConn, but better safe than sorry */
-		unixConn, ok := conn.(*net.UnixConn)
-		if !ok {
-			return journalError("can't send file through non-Unix connection")
-		}
-		_, _, err = unixConn.WriteMsgUnix([]byte{}, rights, nil)
-		if err != nil {
-			return journalError(err.Error())
-		}
-	} else if err != nil {
-		return journalError(err.Error())
+	// Large log entry, send it via tempfile and ancillary-fd.
+	file, err := tempFd()
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+	_, err = io.Copy(file, data)
+	if err != nil {
+		return err
 	}
+	rights := syscall.UnixRights(int(file.Fd()))
+	_, _, err = conn.WriteMsgUnix([]byte{}, rights, socketAddr)
+	if err != nil {
+		return err
+	}
+
 	return nil
 }
 
@@ -119,8 +142,8 @@ func Print(priority Priority, format string, a ...interface{}) error {
 }
 
 func appendVariable(w io.Writer, name, value string) {
-	if !validVarName(name) {
-		journalError("variable name contains invalid character, ignoring")
+	if err := validVarName(name); err != nil {
+		fmt.Fprintf(os.Stderr, "variable name %s contains invalid character, ignoring\n", name)
 	}
 	if strings.ContainsRune(value, '\n') {
 		/* When the value contains a newline, we write:
@@ -137,32 +160,42 @@ func appendVariable(w io.Writer, name, value string) {
 	}
 }
 
-func validVarName(name string) bool {
-	/* The variable name must be in uppercase and consist only of characters,
-	 * numbers and underscores, and may not begin with an underscore. (from the docs)
-	 */
+// validVarName validates a variable name to make sure journald will accept it.
+// The variable name must be in uppercase and consist only of characters,
+// numbers and underscores, and may not begin with an underscore:
+// https://www.freedesktop.org/software/systemd/man/sd_journal_print.html
+func validVarName(name string) error {
+	if name == "" {
+		return errors.New("Empty variable name")
+	} else if name[0] == '_' {
+		return errors.New("Variable name begins with an underscore")
+	}
 
-	valid := name[0] != '_'
 	for _, c := range name {
-		valid = valid && ('A' <= c && c <= 'Z') || ('0' <= c && c <= '9') || c == '_'
+		if !(('A' <= c && c <= 'Z') || ('0' <= c && c <= '9') || c == '_') {
+			return errors.New("Variable name contains invalid characters")
+		}
 	}
-	return valid
+	return nil
 }
 
+// isSocketSpaceError checks whether the error is signaling
+// an "overlarge message" condition.
 func isSocketSpaceError(err error) bool {
 	opErr, ok := err.(*net.OpError)
-	if !ok {
+	if !ok || opErr == nil {
 		return false
 	}
 
-	sysErr, ok := opErr.Err.(syscall.Errno)
-	if !ok {
+	sysErr, ok := opErr.Err.(*os.SyscallError)
+	if !ok || sysErr == nil {
 		return false
 	}
 
-	return sysErr == syscall.EMSGSIZE || sysErr == syscall.ENOBUFS
+	return sysErr.Err == syscall.EMSGSIZE || sysErr.Err == syscall.ENOBUFS
 }
 
+// tempFd creates a temporary, unlinked file under `/dev/shm`.
 func tempFd() (*os.File, error) {
 	file, err := ioutil.TempFile("/dev/shm/", "journal.XXXXX")
 	if err != nil {
@@ -175,8 +208,18 @@ func tempFd() (*os.File, error) {
 	return file, nil
 }
 
-func journalError(s string) error {
-	s = "journal error: " + s
-	fmt.Fprintln(os.Stderr, s)
-	return errors.New(s)
+// initConn initializes the global `unixConnPtr` socket.
+// It is meant to be called exactly once, at program startup.
+func initConn() {
+	autobind, err := net.ResolveUnixAddr("unixgram", "")
+	if err != nil {
+		return
+	}
+
+	sock, err := net.ListenUnixgram("unixgram", autobind)
+	if err != nil {
+		return
+	}
+
+	atomic.StorePointer(&unixConnPtr, unsafe.Pointer(sock))
 }
diff --git a/vendor/github.com/coreos/go-systemd/sdjournal/journal.go b/vendor/github.com/coreos/go-systemd/sdjournal/journal.go
index 9f3d92342..7f840def8 100644
--- a/vendor/github.com/coreos/go-systemd/sdjournal/journal.go
+++ b/vendor/github.com/coreos/go-systemd/sdjournal/journal.go
@@ -414,7 +414,7 @@ func NewJournal() (j *Journal, err error) {
 	r := C.my_sd_journal_open(sd_journal_open, &j.cjournal, C.SD_JOURNAL_LOCAL_ONLY)
 
 	if r < 0 {
-		return nil, fmt.Errorf("failed to open journal: %d", syscall.Errno(-r))
+		return nil, fmt.Errorf("failed to open journal: %s", syscall.Errno(-r).Error())
 	}
 
 	return j, nil
@@ -435,7 +435,7 @@ func NewJournalFromDir(path string) (j *Journal, err error) {
 
 	r := C.my_sd_journal_open_directory(sd_journal_open_directory, &j.cjournal, p, 0)
 	if r < 0 {
-		return nil, fmt.Errorf("failed to open journal in directory %q: %d", path, syscall.Errno(-r))
+		return nil, fmt.Errorf("failed to open journal in directory %q: %s", path, syscall.Errno(-r).Error())
 	}
 
 	return j, nil
@@ -461,7 +461,7 @@ func NewJournalFromFiles(paths ...string) (j *Journal, err error) {
 
 	r := C.my_sd_journal_open_files(sd_journal_open_files, &j.cjournal, &cPaths[0], 0)
 	if r < 0 {
-		return nil, fmt.Errorf("failed to open journals in paths %q: %d", paths, syscall.Errno(-r))
+		return nil, fmt.Errorf("failed to open journals in paths %q: %s", paths, syscall.Errno(-r).Error())
 	}
 
 	return j, nil
@@ -496,7 +496,7 @@ func (j *Journal) AddMatch(match string) error {
 	j.mu.Unlock()
 
 	if r < 0 {
-		return fmt.Errorf("failed to add match: %d", syscall.Errno(-r))
+		return fmt.Errorf("failed to add match: %s", syscall.Errno(-r).Error())
 	}
 
 	return nil
@@ -514,7 +514,7 @@ func (j *Journal) AddDisjunction() error {
 	j.mu.Unlock()
 
 	if r < 0 {
-		return fmt.Errorf("failed to add a disjunction in the match list: %d", syscall.Errno(-r))
+		return fmt.Errorf("failed to add a disjunction in the match list: %s", syscall.Errno(-r).Error())
 	}
 
 	return nil
@@ -532,7 +532,7 @@ func (j *Journal) AddConjunction() error {
 	j.mu.Unlock()
 
 	if r < 0 {
-		return fmt.Errorf("failed to add a conjunction in the match list: %d", syscall.Errno(-r))
+		return fmt.Errorf("failed to add a conjunction in the match list: %s", syscall.Errno(-r).Error())
 	}
 
 	return nil
@@ -562,7 +562,7 @@ func (j *Journal) Next() (uint64, error) {
 	j.mu.Unlock()
 
 	if r < 0 {
-		return 0, fmt.Errorf("failed to iterate journal: %d", syscall.Errno(-r))
+		return 0, fmt.Errorf("failed to iterate journal: %s", syscall.Errno(-r).Error())
 	}
 
 	return uint64(r), nil
@@ -581,7 +581,7 @@ func (j *Journal) NextSkip(skip uint64) (uint64, error) {
 	j.mu.Unlock()
 
 	if r < 0 {
-		return 0, fmt.Errorf("failed to iterate journal: %d", syscall.Errno(-r))
+		return 0, fmt.Errorf("failed to iterate journal: %s", syscall.Errno(-r).Error())
 	}
 
 	return uint64(r), nil
@@ -599,7 +599,7 @@ func (j *Journal) Previous() (uint64, error) {
 	j.mu.Unlock()
 
 	if r < 0 {
-		return 0, fmt.Errorf("failed to iterate journal: %d", syscall.Errno(-r))
+		return 0, fmt.Errorf("failed to iterate journal: %s", syscall.Errno(-r).Error())
 	}
 
 	return uint64(r), nil
@@ -618,7 +618,7 @@ func (j *Journal) PreviousSkip(skip uint64) (uint64, error) {
 	j.mu.Unlock()
 
 	if r < 0 {
-		return 0, fmt.Errorf("failed to iterate journal: %d", syscall.Errno(-r))
+		return 0, fmt.Errorf("failed to iterate journal: %s", syscall.Errno(-r).Error())
 	}
 
 	return uint64(r), nil
@@ -641,7 +641,7 @@ func (j *Journal) getData(field string) (unsafe.Pointer, C.int, error) {
 	j.mu.Unlock()
 
 	if r < 0 {
-		return nil, 0, fmt.Errorf("failed to read message: %d", syscall.Errno(-r))
+		return nil, 0, fmt.Errorf("failed to read message: %s", syscall.Errno(-r).Error())
 	}
 
 	return d, C.int(l), nil
@@ -736,7 +736,7 @@ func (j *Journal) GetEntry() (*JournalEntry, error) {
 	var realtimeUsec C.uint64_t
 	r = C.my_sd_journal_get_realtime_usec(sd_journal_get_realtime_usec, j.cjournal, &realtimeUsec)
 	if r < 0 {
-		return nil, fmt.Errorf("failed to get realtime timestamp: %d", syscall.Errno(-r))
+		return nil, fmt.Errorf("failed to get realtime timestamp: %s", syscall.Errno(-r).Error())
 	}
 
 	entry.RealtimeTimestamp = uint64(realtimeUsec)
@@ -746,7 +746,7 @@ func (j *Journal) GetEntry() (*JournalEntry, error) {
 
 	r = C.my_sd_journal_get_monotonic_usec(sd_journal_get_monotonic_usec, j.cjournal, &monotonicUsec, &boot_id)
 	if r < 0 {
-		return nil, fmt.Errorf("failed to get monotonic timestamp: %d", syscall.Errno(-r))
+		return nil, fmt.Errorf("failed to get monotonic timestamp: %s", syscall.Errno(-r).Error())
 	}
 
 	entry.MonotonicTimestamp = uint64(monotonicUsec)
@@ -757,7 +757,7 @@ func (j *Journal) GetEntry() (*JournalEntry, error) {
 	r = C.my_sd_journal_get_cursor(sd_journal_get_cursor, j.cjournal, &c)
 	defer C.free(unsafe.Pointer(c))
 	if r < 0 {
-		return nil, fmt.Errorf("failed to get cursor: %d", syscall.Errno(-r))
+		return nil, fmt.Errorf("failed to get cursor: %s", syscall.Errno(-r).Error())
 	}
 
 	entry.Cursor = C.GoString(c)
@@ -773,7 +773,7 @@ func (j *Journal) GetEntry() (*JournalEntry, error) {
 		}
 
 		if r < 0 {
-			return nil, fmt.Errorf("failed to read message field: %d", syscall.Errno(-r))
+			return nil, fmt.Errorf("failed to read message field: %s", syscall.Errno(-r).Error())
 		}
 
 		msg := C.GoStringN((*C.char)(d), C.int(l))
@@ -803,7 +803,7 @@ func (j *Journal) SetDataThreshold(threshold uint64) error {
 	j.mu.Unlock()
 
 	if r < 0 {
-		return fmt.Errorf("failed to set data threshold: %d", syscall.Errno(-r))
+		return fmt.Errorf("failed to set data threshold: %s", syscall.Errno(-r).Error())
 	}
 
 	return nil
@@ -826,7 +826,7 @@ func (j *Journal) GetRealtimeUsec() (uint64, error) {
 	j.mu.Unlock()
 
 	if r < 0 {
-		return 0, fmt.Errorf("failed to get realtime timestamp: %d", syscall.Errno(-r))
+		return 0, fmt.Errorf("failed to get realtime timestamp: %s", syscall.Errno(-r).Error())
 	}
 
 	return uint64(usec), nil
@@ -850,7 +850,7 @@ func (j *Journal) GetMonotonicUsec() (uint64, error) {
 	j.mu.Unlock()
 
 	if r < 0 {
-		return 0, fmt.Errorf("failed to get monotonic timestamp: %d", syscall.Errno(-r))
+		return 0, fmt.Errorf("failed to get monotonic timestamp: %s", syscall.Errno(-r).Error())
 	}
 
 	return uint64(usec), nil
@@ -875,7 +875,7 @@ func (j *Journal) GetCursor() (string, error) {
 	defer C.free(unsafe.Pointer(d))
 
 	if r < 0 {
-		return "", fmt.Errorf("failed to get cursor: %d", syscall.Errno(-r))
+		return "", fmt.Errorf("failed to get cursor: %s", syscall.Errno(-r).Error())
 	}
 
 	cursor := C.GoString(d)
@@ -899,7 +899,7 @@ func (j *Journal) TestCursor(cursor string) error {
 	j.mu.Unlock()
 
 	if r < 0 {
-		return fmt.Errorf("failed to test to cursor %q: %d", cursor, syscall.Errno(-r))
+		return fmt.Errorf("failed to test to cursor %q: %s", cursor, syscall.Errno(-r).Error())
 	} else if r == 0 {
 		return ErrNoTestCursor
 	}
@@ -921,7 +921,7 @@ func (j *Journal) SeekHead() error {
 	j.mu.Unlock()
 
 	if r < 0 {
-		return fmt.Errorf("failed to seek to head of journal: %d", syscall.Errno(-r))
+		return fmt.Errorf("failed to seek to head of journal: %s", syscall.Errno(-r).Error())
 	}
 
 	return nil
@@ -941,7 +941,7 @@ func (j *Journal) SeekTail() error {
 	j.mu.Unlock()
 
 	if r < 0 {
-		return fmt.Errorf("failed to seek to tail of journal: %d", syscall.Errno(-r))
+		return fmt.Errorf("failed to seek to tail of journal: %s", syscall.Errno(-r).Error())
 	}
 
 	return nil
@@ -961,7 +961,7 @@ func (j *Journal) SeekRealtimeUsec(usec uint64) error {
 	j.mu.Unlock()
 
 	if r < 0 {
-		return fmt.Errorf("failed to seek to %d: %d", usec, syscall.Errno(-r))
+		return fmt.Errorf("failed to seek to %d: %s", usec, syscall.Errno(-r).Error())
 	}
 
 	return nil
@@ -984,7 +984,7 @@ func (j *Journal) SeekCursor(cursor string) error {
 	j.mu.Unlock()
 
 	if r < 0 {
-		return fmt.Errorf("failed to seek to cursor %q: %d", cursor, syscall.Errno(-r))
+		return fmt.Errorf("failed to seek to cursor %q: %s", cursor, syscall.Errno(-r).Error())
 	}
 
 	return nil
@@ -1031,7 +1031,7 @@ func (j *Journal) GetUsage() (uint64, error) {
 	j.mu.Unlock()
 
 	if r < 0 {
-		return 0, fmt.Errorf("failed to get journal disk space usage: %d", syscall.Errno(-r))
+		return 0, fmt.Errorf("failed to get journal disk space usage: %s", syscall.Errno(-r).Error())
 	}
 
 	return uint64(out), nil
@@ -1065,7 +1065,7 @@ func (j *Journal) GetUniqueValues(field string) ([]string, error) {
 	r := C.my_sd_journal_query_unique(sd_journal_query_unique, j.cjournal, f)
 
 	if r < 0 {
-		return nil, fmt.Errorf("failed to query journal: %d", syscall.Errno(-r))
+		return nil, fmt.Errorf("failed to query journal: %s", syscall.Errno(-r).Error())
 	}
 
 	// Implements the SD_JOURNAL_FOREACH_UNIQUE macro from sd-journal.h
@@ -1079,7 +1079,7 @@ func (j *Journal) GetUniqueValues(field string) ([]string, error) {
 		}
 
 		if r < 0 {
-			return nil, fmt.Errorf("failed to read message field: %d", syscall.Errno(-r))
+			return nil, fmt.Errorf("failed to read message field: %s", syscall.Errno(-r).Error())
 		}
 
 		msg := C.GoStringN((*C.char)(d), C.int(l))
@@ -1111,7 +1111,7 @@ func (j *Journal) GetCatalog() (string, error) {
 	defer C.free(unsafe.Pointer(c))
 
 	if r < 0 {
-		return "", fmt.Errorf("failed to retrieve catalog entry for current journal entry: %d", syscall.Errno(-r))
+		return "", fmt.Errorf("failed to retrieve catalog entry for current journal entry: %s", syscall.Errno(-r).Error())
 	}
 
 	catalog := C.GoString(c)