introduce os.EOF and io.ErrUnexpectedEOF.

remove io.ErrEOF.
rename io.FullRead to io.ReadFull, to match
   ReadAtLeast and ReadAll.
remove io.FullReader, because it is now unused.

R=r
DELTA=295  (88 added, 105 deleted, 102 changed)
OCL=30544
CL=30588

1 files changed, 14 insertions, 16 deletions

diff --git a/src/pkg/exec/exec_test.go b/src/pkg/exec/exec_test.go
index a1bb1f50e2..9a9fca2e7b 100644
--- a/src/pkg/exec/exec_test.go
+++ b/src/pkg/exec/exec_test.go
@@ -18,16 +18,15 @@ func TestRunCat(t *testing.T) {
 	}
 	io.WriteString(cmd.Stdin, "hello, world\n");
 	cmd.Stdin.Close();
-	var buf [64]byte;
-	n, err1 := io.FullRead(cmd.Stdout, &buf);
-	if err1 != nil && err1 != io.ErrEOF {
-		t.Fatalf("reading from /bin/cat: %v", err1);
+	buf, err := io.ReadAll(cmd.Stdout);
+	if err != nil {
+		t.Fatalf("reading from /bin/cat: %v", err);
 	}
-	if string(buf[0:n]) != "hello, world\n" {
-		t.Fatalf("reading from /bin/cat: got %q", buf[0:n]);
+	if string(buf) != "hello, world\n" {
+		t.Fatalf("reading from /bin/cat: got %q", buf);
 	}
-	if err1 = cmd.Close(); err1 != nil {
-		t.Fatalf("closing /bin/cat: %v", err1);
+	if err = cmd.Close(); err != nil {
+		t.Fatalf("closing /bin/cat: %v", err);
 	}
 }
 
@@ -37,15 +36,14 @@ func TestRunEcho(t *testing.T) {
 	if err != nil {
 		t.Fatalf("opencmd /bin/echo: %v", err);
 	}
-	var buf [64]byte;
-	n, err1 := io.FullRead(cmd.Stdout, &buf);
-	if err1 != nil && err1 != io.ErrEOF {
-		t.Fatalf("reading from /bin/echo: %v", err1);
+	buf, err := io.ReadAll(cmd.Stdout);
+	if err != nil {
+		t.Fatalf("reading from /bin/echo: %v", err);
 	}
-	if string(buf[0:n]) != "hello world\n" {
-		t.Fatalf("reading from /bin/echo: got %q", buf[0:n]);
+	if string(buf) != "hello world\n" {
+		t.Fatalf("reading from /bin/echo: got %q", buf);
 	}
-	if err1 = cmd.Close(); err1 != nil {
-		t.Fatalf("closing /bin/echo: %v", err1);
+	if err = cmd.Close(); err != nil {
+		t.Fatalf("closing /bin/echo: %v", err);
 	}
 }