fileutil: new package

Move some file utilities into a separate package.

2 files changed, 2 insertions, 16 deletions

diff --git a/csource/csource.go b/csource/csource.go
index 03ce4b84c..5caa74af5 100644
--- a/csource/csource.go
+++ b/csource/csource.go
@@ -199,21 +199,6 @@ loop:
 	return calls, n
 }
 
-// WriteTempFile writes data to a temp file and returns its name.
-func WriteTempFile(data []byte) (string, error) {
-	f, err := ioutil.TempFile("", "syz-prog")
-	if err != nil {
-		return "", fmt.Errorf("failed to create a temp file: %v", err)
-	}
-	if _, err := f.Write(data); err != nil {
-		f.Close()
-		os.Remove(f.Name())
-		return "", fmt.Errorf("failed to write temp file: %v", err)
-	}
-	f.Close()
-	return f.Name(), nil
-}
-
 // Build builds a C/C++ program from source file src
 // and returns name of the resulting binary.
 func Build(src string) (string, error) {
diff --git a/csource/csource_test.go b/csource/csource_test.go
index b2fbda6dc..388ab0e1a 100644
--- a/csource/csource_test.go
+++ b/csource/csource_test.go
@@ -9,6 +9,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/google/syzkaller/fileutil"
 	"github.com/google/syzkaller/prog"
 )
 
@@ -40,7 +41,7 @@ func Test(t *testing.T) {
 
 func testOne(t *testing.T, p *prog.Prog, opts Options) {
 	src := Write(p, opts)
-	srcf, err := WriteTempFile(src)
+	srcf, err := fileutil.WriteTempFile(src)
 	if err != nil {
 		t.Fatalf("%v", err)
 	}