Include st_dev to make the result of getUniqueID actually unique.

This will let us use getUniqueID instead of st_dev directly on clang.

llvm-svn: 187378

1 files changed, 4 insertions, 12 deletions

diff --git a/llvm/lib/Support/Unix/Path.inc b/llvm/lib/Support/Unix/Path.inc
index 5386366b542..0c4518c7493 100644
--- a/llvm/lib/Support/Unix/Path.inc
+++ b/llvm/lib/Support/Unix/Path.inc
@@ -293,6 +293,10 @@ TimeValue file_status::getLastModificationTime() const {
   return Ret;
 }
 
+UniqueID file_status::getUniqueID() {
+  return UniqueID(fs_st_dev, fs_st_ino);
+}
+
 error_code current_path(SmallVectorImpl<char> &result) {
 #ifdef MAXPATHLEN
   result.reserve(MAXPATHLEN);
@@ -457,18 +461,6 @@ error_code equivalent(const Twine &A, const Twine &B, bool &result) {
   return error_code::success();
 }
 
-error_code getUniqueID(const Twine Path, uint64_t &Result) {
-  SmallString<128> Storage;
-  StringRef P = Path.toNullTerminatedStringRef(Storage);
-
-  struct stat Status;
-  if (::stat(P.begin(), &Status) != 0)
-    return error_code(errno, system_category());
-
-  Result = Status.st_ino;
-  return error_code::success();
-}
-
 static error_code fillStatus(int StatRet, const struct stat &Status,
                              file_status &Result) {
   if (StatRet != 0) {