GH-111293: Fix DirEntry.inode dropping higher bits on Windows (GH-111294)

miss-islington · zcxsythenew · web-flow · commit e25d8b40cd70 · 2023-10-26T17:08:41.000Z
(cherry picked from commit b468538) Co-authored-by: zcxsythenew <30565051+zcxsythenew@users.noreply.github.com>
diff --git a/Misc/NEWS.d/next/Windows/2023-10-25-05-01-28.gh-issue-111293.FSsLT6.rst b/Misc/NEWS.d/next/Windows/2023-10-25-05-01-28.gh-issue-111293.FSsLT6.rst
@@ -0,0 +1 @@
+Fix :data:`os.DirEntry.inode` dropping higher 64 bits of a file id on some filesystems on Windows.
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
@@ -14528,6 +14528,7 @@ typedef struct {
 #ifdef MS_WINDOWS
     struct _Py_stat_struct win32_lstat;
     uint64_t win32_file_index;
+    uint64_t win32_file_index_high;
     int got_file_index;
 #else /* POSIX */
 #ifdef HAVE_DIRENT_D_TYPE
@@ -14859,11 +14860,10 @@ os_DirEntry_inode_impl(DirEntry *self)
         }
 
         self->win32_file_index = stat.st_ino;
+        self->win32_file_index_high = stat.st_ino_high;
         self->got_file_index = 1;
     }
-    static_assert(sizeof(unsigned long long) >= sizeof(self->win32_file_index),
-                  "DirEntry.win32_file_index is larger than unsigned long long");
-    return PyLong_FromUnsignedLongLong(self->win32_file_index);
+    return _pystat_l128_from_l64_l64(self->win32_file_index, self->win32_file_index_high);
 #else /* POSIX */
     static_assert(sizeof(unsigned long long) >= sizeof(self->d_ino),
                   "DirEntry.d_ino is larger than unsigned long long");
