[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, 3 deletions

diff --git a/pkg/sentry/kernel/seccomp.go b/pkg/sentry/kernel/seccomp.go
index 60917e7d3..8163a6132 100644
--- a/pkg/sentry/kernel/seccomp.go
+++ b/pkg/sentry/kernel/seccomp.go
@@ -15,8 +15,7 @@
 package kernel
 
 import (
-	"syscall"
-
+	"golang.org/x/sys/unix"
 	"gvisor.dev/gvisor/pkg/abi/linux"
 	"gvisor.dev/gvisor/pkg/bpf"
 	"gvisor.dev/gvisor/pkg/sentry/arch"
@@ -83,7 +82,7 @@ func (t *Task) checkSeccompSyscall(sysno int32, args arch.SyscallArguments, ip u
 		// the system call is not executed."
 		if !t.ptraceSeccomp(result.Data()) {
 			// This useless-looking temporary is needed because Go.
-			tmp := uintptr(syscall.ENOSYS)
+			tmp := uintptr(unix.ENOSYS)
 			t.Arch().SetReturn(-tmp)
 			return linux.SECCOMP_RET_ERRNO
 		}