Enable runsc/fsgofer support on arm64.

newfstatat() syscall is not supported on arm64, so we resort
to use the fstatat() syscall.

Signed-off-by: Haibo Xu <haibo.xu@arm.com>
Change-Id: I9e89d46c5ec9ae07db201c9da5b6dda9bfd2eaf0

1 files changed, 0 insertions, 25 deletions

diff --git a/runsc/fsgofer/fsgofer_unsafe.go b/runsc/fsgofer/fsgofer_unsafe.go
index ff2556aee..542b54365 100644
--- a/runsc/fsgofer/fsgofer_unsafe.go
+++ b/runsc/fsgofer/fsgofer_unsafe.go
@@ -18,34 +18,9 @@ import (
 	"syscall"
 	"unsafe"
 
-	"gvisor.dev/gvisor/pkg/abi/linux"
 	"gvisor.dev/gvisor/pkg/syserr"
 )
 
-func statAt(dirFd int, name string) (syscall.Stat_t, error) {
-	nameBytes, err := syscall.BytePtrFromString(name)
-	if err != nil {
-		return syscall.Stat_t{}, err
-	}
-	namePtr := unsafe.Pointer(nameBytes)
-
-	var stat syscall.Stat_t
-	statPtr := unsafe.Pointer(&stat)
-
-	if _, _, errno := syscall.Syscall6(
-		syscall.SYS_NEWFSTATAT,
-		uintptr(dirFd),
-		uintptr(namePtr),
-		uintptr(statPtr),
-		linux.AT_SYMLINK_NOFOLLOW,
-		0,
-		0); errno != 0 {
-
-		return syscall.Stat_t{}, syserr.FromHost(errno).ToError()
-	}
-	return stat, nil
-}
-
 func utimensat(dirFd int, name string, times [2]syscall.Timespec, flags int) error {
 	// utimensat(2) doesn't accept empty name, instead name must be nil to make it
 	// operate directly on 'dirFd' unlike other *at syscalls.