[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, 2 insertions, 1 deletions

diff --git a/pkg/fdchannel/fdchannel_test.go b/pkg/fdchannel/fdchannel_test.go
index 7a8a63a59..9616e30c5 100644
--- a/pkg/fdchannel/fdchannel_test.go
+++ b/pkg/fdchannel/fdchannel_test.go
@@ -21,6 +21,7 @@ import (
 	"testing"
 	"time"
 
+	"golang.org/x/sys/unix"
 	"gvisor.dev/gvisor/pkg/sync"
 )
 
@@ -41,7 +42,7 @@ func TestSendRecvFD(t *testing.T) {
 	defer recvEP.Destroy()
 
 	recvFD, err := recvEP.RecvFDNonblock()
-	if err != syscall.EAGAIN && err != syscall.EWOULDBLOCK {
+	if err != unix.EAGAIN && err != unix.EWOULDBLOCK {
 		t.Errorf("RecvFDNonblock before SendFD: got (%d, %v), wanted (<unspecified>, EAGAIN or EWOULDBLOCK", recvFD, err)
 	}