2 files changed, 12 insertions, 0 deletions
diff --git a/test/util/fs_util.cc b/test/util/fs_util.cc
index ae49725a0..f7d231b14 100644
--- a/test/util/fs_util.cc
+++ b/test/util/fs_util.cc
@@ -105,6 +105,15 @@ PosixErrorOr<struct stat> Stat(absl::string_view path) {
   return stat_buf;
 }
 
+PosixErrorOr<struct stat> Fstat(int fd) {
+  struct stat stat_buf;
+  int res = fstat(fd, &stat_buf);
+  if (res < 0) {
+    return PosixError(errno, absl::StrCat("fstat ", fd));
+  }
+  return stat_buf;
+}
+
 PosixErrorOr<bool> Exists(absl::string_view path) {
   struct stat stat_buf;
   int res = stat(std::string(path).c_str(), &stat_buf);
diff --git a/test/util/fs_util.h b/test/util/fs_util.h
index 3969f8309..e5b555891 100644
--- a/test/util/fs_util.h
+++ b/test/util/fs_util.h
@@ -35,6 +35,9 @@ PosixErrorOr<bool> Exists(absl::string_view path);
 // Returns a stat structure for the given path or an error.
 PosixErrorOr<struct stat> Stat(absl::string_view path);
 
+// Returns a stat struct for the given fd.
+PosixErrorOr<struct stat> Fstat(int fd);
+
 // Deletes the file or directory at path or returns an error.
 PosixError Delete(absl::string_view path);