[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, 3 insertions, 5 deletions

diff --git a/pkg/flipcall/packet_window_mmap_arm64.go b/pkg/flipcall/packet_window_mmap_arm64.go
index b9c9c44f6..87ad1a4a1 100644
--- a/pkg/flipcall/packet_window_mmap_arm64.go
+++ b/pkg/flipcall/packet_window_mmap_arm64.go
@@ -16,12 +16,10 @@
 
 package flipcall
 
-import (
-	"syscall"
-)
+import "golang.org/x/sys/unix"
 
 // Return a memory mapping of the pwd in memory that can be shared outside the sandbox.
-func packetWindowMmap(pwd PacketWindowDescriptor) (uintptr, syscall.Errno) {
-	m, _, err := syscall.RawSyscall6(syscall.SYS_MMAP, 0, uintptr(pwd.Length), syscall.PROT_READ|syscall.PROT_WRITE, syscall.MAP_SHARED, uintptr(pwd.FD), uintptr(pwd.Offset))
+func packetWindowMmap(pwd PacketWindowDescriptor) (uintptr, unix.Errno) {
+	m, _, err := unix.RawSyscall6(unix.SYS_MMAP, 0, uintptr(pwd.Length), unix.PROT_READ|unix.PROT_WRITE, unix.MAP_SHARED, uintptr(pwd.FD), uintptr(pwd.Offset))
 	return m, err
 }