4 files changed, 41 insertions, 6 deletions
diff --git a/pkg/sentry/fsimpl/host/BUILD b/pkg/sentry/fsimpl/host/BUILD
index 0bb4a5c3e..82e1fb74b 100644
--- a/pkg/sentry/fsimpl/host/BUILD
+++ b/pkg/sentry/fsimpl/host/BUILD
@@ -9,6 +9,7 @@ go_library(
         "ioctl_unsafe.go",
         "tty.go",
         "util.go",
+        "util_unsafe.go",
     ],
     visibility = ["//pkg/sentry:internal"],
     deps = [
diff --git a/pkg/sentry/fsimpl/host/host.go b/pkg/sentry/fsimpl/host/host.go
index 3afb41395..1f735628f 100644
--- a/pkg/sentry/fsimpl/host/host.go
+++ b/pkg/sentry/fsimpl/host/host.go
@@ -322,11 +322,11 @@ func (i *inode) SetStat(ctx context.Context, fs *vfs.Filesystem, creds *auth.Cre
 		}
 	}
 	if m&(linux.STATX_ATIME|linux.STATX_MTIME) != 0 {
-		timestamps := []unix.Timespec{
+		ts := [2]syscall.Timespec{
 			toTimespec(s.Atime, m&linux.STATX_ATIME == 0),
 			toTimespec(s.Mtime, m&linux.STATX_MTIME == 0),
 		}
-		if err := unix.UtimesNanoAt(i.hostFD, "", timestamps, unix.AT_EMPTY_PATH); err != nil {
+		if err := setTimestamps(i.hostFD, &ts); err != nil {
 			return err
 		}
 	}
diff --git a/pkg/sentry/fsimpl/host/util.go b/pkg/sentry/fsimpl/host/util.go
index d519feef5..2bc757b1a 100644
--- a/pkg/sentry/fsimpl/host/util.go
+++ b/pkg/sentry/fsimpl/host/util.go
@@ -22,15 +22,15 @@ import (
 	"gvisor.dev/gvisor/pkg/syserror"
 )
 
-func toTimespec(ts linux.StatxTimestamp, omit bool) unix.Timespec {
+func toTimespec(ts linux.StatxTimestamp, omit bool) syscall.Timespec {
 	if omit {
-		return unix.Timespec{
+		return syscall.Timespec{
 			Sec:  0,
 			Nsec: unix.UTIME_OMIT,
 		}
 	}
-	return unix.Timespec{
-		Sec:  int64(ts.Sec),
+	return syscall.Timespec{
+		Sec:  ts.Sec,
 		Nsec: int64(ts.Nsec),
 	}
 }
diff --git a/pkg/sentry/fsimpl/host/util_unsafe.go b/pkg/sentry/fsimpl/host/util_unsafe.go
new file mode 100644
index 000000000..5136ac844
--- /dev/null
+++ b/pkg/sentry/fsimpl/host/util_unsafe.go
@@ -0,0 +1,34 @@
+// Copyright 2020 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package host
+
+import (
+	"syscall"
+	"unsafe"
+)
+
+func setTimestamps(fd int, ts *[2]syscall.Timespec) error {
+	_, _, errno := syscall.Syscall6(
+		syscall.SYS_UTIMENSAT,
+		uintptr(fd),
+		0, /* path */
+		uintptr(unsafe.Pointer(ts)),
+		0, /* flags */
+		0, 0)
+	if errno != 0 {
+		return errno
+	}
+	return nil
+}