internal/outcome: improve doc comments

This improves readability on smaller displays.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/outcome/sppulse.go

@@ -20,6 +20,7 @@ const pulseCookieSizeMax = 1 << 8
 func init() { gob.Register(new(spPulseOp)) }
 
 // spPulseOp exports the PulseAudio server to the container.
+//
 // Runs after spRuntimeOp.
 type spPulseOp struct {
 	// PulseAudio cookie data, populated during toSystem if a cookie is present.
@@ -37,24 +38,40 @@ func (s *spPulseOp) toSystem(state *outcomeStateSys) error {
 
 	if _, err := state.k.stat(pulseRuntimeDir.String()); err != nil {
 		if !errors.Is(err, fs.ErrNotExist) {
-			return &hst.AppError{Step: fmt.Sprintf("access PulseAudio directory %q", pulseRuntimeDir), Err: err}
+			return &hst.AppError{Step: fmt.Sprintf(
+				"access PulseAudio directory %q",
+				pulseRuntimeDir,
+			), Err: err}
 		}
-		return newWithMessageError(fmt.Sprintf("PulseAudio directory %q not found", pulseRuntimeDir), err)
+		return newWithMessageError(fmt.Sprintf(
+			"PulseAudio directory %q not found",
+			pulseRuntimeDir,
+		), err)
 	}
 
 	if fi, err := state.k.stat(pulseSocket.String()); err != nil {
 		if !errors.Is(err, fs.ErrNotExist) {
-			return &hst.AppError{Step: fmt.Sprintf("access PulseAudio socket %q", pulseSocket), Err: err}
+			return &hst.AppError{Step: fmt.Sprintf(
+				"access PulseAudio socket %q",
+				pulseSocket,
+			), Err: err}
 		}
-		return newWithMessageError(fmt.Sprintf("PulseAudio directory %q found but socket does not exist", pulseRuntimeDir), err)
+		return newWithMessageError(fmt.Sprintf(
+			"PulseAudio directory %q found but socket does not exist",
+			pulseRuntimeDir,
+		), err)
 	} else {
 		if m := fi.Mode(); m&0o006 != 0o006 {
-			return newWithMessage(fmt.Sprintf("unexpected permissions on %q: %s", pulseSocket, m))
+			return newWithMessage(fmt.Sprintf(
+				"unexpected permissions on %q: %s",
+				pulseSocket, m,
+			))
 		}
 	}
 
-	// pulse socket is world writable and its parent directory DAC permissions prevents access;
-	// hard link to target-executable share directory to grant access
+	// PulseAudio socket is world writable and its parent directory DAC
+	// permissions prevents access. Hard link to target-executable share
+	// directory to grant access
 	state.sys.Link(pulseSocket, state.runtime().Append("pulse"))
 
 	// load up to pulseCookieSizeMax bytes of pulse cookie for transmission to shim
@@ -62,7 +79,13 @@ func (s *spPulseOp) toSystem(state *outcomeStateSys) error {
 		return err
 	} else if a != nil {
 		s.Cookie = new([pulseCookieSizeMax]byte)
-		if s.CookieSize, err = loadFile(state.msg, state.k, "PulseAudio cookie", a.String(), s.Cookie[:]); err != nil {
+		if s.CookieSize, err = loadFile(
+			state.msg,
+			state.k,
+			"PulseAudio cookie",
+			a.String(),
+			s.Cookie[:],
+		); err != nil {
 			return err
 		}
 	} else {
@@ -101,8 +124,9 @@ func (s *spPulseOp) commonPaths(state *outcomeState) (pulseRuntimeDir, pulseSock
 	return
 }
 
-// discoverPulseCookie attempts to discover the pathname of the PulseAudio cookie of the current user.
-// If both returned pathname and error are nil, the cookie is likely unavailable and can be silently skipped.
+// discoverPulseCookie attempts to discover the pathname of the PulseAudio
+// cookie of the current user. If both returned pathname and error are nil, the
+// cookie is likely unavailable and can be silently skipped.
 func discoverPulseCookie(k syscallDispatcher) (*check.Absolute, error) {
 	const paLocateStep = "locate PulseAudio cookie"
 
@@ -186,7 +210,10 @@ func loadFile(
 				&os.PathError{Op: "stat", Path: pathname, Err: syscall.ENOMEM},
 			)
 		} else if s < int64(n) {
-			msg.Verbosef("%s at %q is %d bytes shorter than expected", description, pathname, int64(n)-s)
+			msg.Verbosef(
+				"%s at %q is %d bytes shorter than expected",
+				description, pathname, int64(n)-s,
+			)
 		} else {
 			msg.Verbosef("loading %d bytes from %q", n, pathname)
 		}