Changeset 79370 in vbox for trunk/src/VBox/Runtime/r3/nt

Timestamp:

Jun 27, 2019 2:43:23 AM (5 years ago)

Author:

vboxsync

Message:

IPRT/direnum-r3-nt.cpp: Fixed enumerating directories we're not allowed to traverse (e.g. c:\windows\system32\com\dmp\) bugref:9320

File:

• trunk/src/VBox/Runtime/r3/nt/direnum-r3-nt.cpp (modified) (3 diffs)

trunk/src/VBox/Runtime/r3/nt/direnum-r3-nt.cpp

@@ -127 +127 @@
             fOptions |= FILE_OPEN_REPARSE_POINT;
 
+        ACCESS_MASK fDesiredAccess = FILE_LIST_DIRECTORY | FILE_READ_ATTRIBUTES | FILE_TRAVERSE | SYNCHRONIZE;
         for (;;)
         {
             if (pvNativeRelative == NULL)
                 rc = RTNtPathOpenDir(pDir->pszPath,
-                                     FILE_LIST_DIRECTORY | FILE_READ_ATTRIBUTES | FILE_TRAVERSE | SYNCHRONIZE,
+                                     fDesiredAccess,
                                      FILE_SHARE_READ | FILE_SHARE_WRITE,
                                      fOptions,
@@ -145 +146 @@
                 rc = RTNtPathOpenDirEx((HANDLE)hRelativeDir,
                                        (struct _UNICODE_STRING *)pvNativeRelative,
-                                       FILE_LIST_DIRECTORY | FILE_READ_ATTRIBUTES | FILE_TRAVERSE | SYNCHRONIZE,
+                                       fDesiredAccess,
                                        FILE_SHARE_READ | FILE_SHARE_WRITE,
                                        fOptions,
@@ -156 +157 @@
 #endif
                                        );
+            if (   rc == VERR_ACCESS_DENIED             /* Seen with c:\windows\system32\com\dmp on w7 & w10 (admin mode). */
+                && (fDesiredAccess & FILE_TRAVERSE))
+            {
+                fDesiredAccess &= ~FILE_TRAVERSE;
+                continue;
+            }
             if (   !(fOptions & FILE_OPEN_REPARSE_POINT)
                 || (rc != VINF_SUCCESS && rc != VERR_INVALID_PARAMETER) )