[op] Replace syscall package usage with golang.org/x/sys/unix in pkg/.

The syscall package has been deprecated in favor of golang.org/x/sys.

Note that syscall is still used in the following places:
- pkg/sentry/socket/hostinet/stack.go: some netlink related functionalities
  are not yet available in golang.org/x/sys.
- syscall.Stat_t is still used in some places because os.FileInfo.Sys() still
  returns it and not unix.Stat_t.

Updates #214

PiperOrigin-RevId: 360701387

1 files changed, 9 insertions, 8 deletions

diff --git a/pkg/fd/fd_test.go b/pkg/fd/fd_test.go
index 5fb0ad47d..da71364d4 100644
--- a/pkg/fd/fd_test.go
+++ b/pkg/fd/fd_test.go
@@ -17,8 +17,9 @@ package fd
 import (
 	"math"
 	"os"
-	"syscall"
 	"testing"
+
+	"golang.org/x/sys/unix"
 )
 
 func TestSetNegOne(t *testing.T) {
@@ -29,22 +30,22 @@ func TestSetNegOne(t *testing.T) {
 	}
 	var tests []entry
 
-	fd, err := syscall.Socket(syscall.AF_UNIX, syscall.SOCK_STREAM|syscall.SOCK_CLOEXEC, 0)
+	fd, err := unix.Socket(unix.AF_UNIX, unix.SOCK_STREAM|unix.SOCK_CLOEXEC, 0)
 	if err != nil {
-		t.Fatal("syscall.Socket:", err)
+		t.Fatal("unix.Socket:", err)
 	}
 	f1 := New(fd)
 	tests = append(tests, entry{
 		"Release",
 		f1,
 		func() error {
-			return syscall.Close(f1.Release())
+			return unix.Close(f1.Release())
 		},
 	})
 
-	fd, err = syscall.Socket(syscall.AF_UNIX, syscall.SOCK_STREAM|syscall.SOCK_CLOEXEC, 0)
+	fd, err = unix.Socket(unix.AF_UNIX, unix.SOCK_STREAM|unix.SOCK_CLOEXEC, 0)
 	if err != nil {
-		t.Fatal("syscall.Socket:", err)
+		t.Fatal("unix.Socket:", err)
 	}
 	f2 := New(fd)
 	tests = append(tests, entry{
@@ -85,9 +86,9 @@ func TestStartsNegOne(t *testing.T) {
 }
 
 func TestFileDotFile(t *testing.T) {
-	fd, err := syscall.Socket(syscall.AF_UNIX, syscall.SOCK_STREAM|syscall.SOCK_CLOEXEC, 0)
+	fd, err := unix.Socket(unix.AF_UNIX, unix.SOCK_STREAM|unix.SOCK_CLOEXEC, 0)
 	if err != nil {
-		t.Fatal("syscall.Socket:", err)
+		t.Fatal("unix.Socket:", err)
 	}
 
 	f := New(fd)