From 54551655d08c15220bfd3ddcbb3110d658ecd3b5 Mon Sep 17 00:00:00 2001
From: Olga Kornievskaia <aglo@citi.umich.edu>
Date: Tue, 15 May 2012 18:01:09 -0400
Subject: [PATCH] [symlink] fixing getea for symlinktargetname on regular file

cygwin does geteas for regular files and asks for nfssymlinktargetname for
which we were doing an upcall and failing nfs41_readlink() with err_invalid.

instead check that it's not a symlink in the driver and reply as we used to
with 0 eavaluelenth
---
 sys/nfs41_driver.c | 24 ++++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/sys/nfs41_driver.c b/sys/nfs41_driver.c
index c4bb943..fcb90c9 100644
--- a/sys/nfs41_driver.c
+++ b/sys/nfs41_driver.c
@@ -4746,8 +4746,28 @@ static NTSTATUS QueryCygwinEA(
         goto out;
 
     if (AnsiStrEq(&NfsSymlinkTargetName, query->EaName, query->EaNameLength)) {
-        status = QueryCygwinSymlink(RxContext, query, info);
-        goto out;
+        __notnull PNFS41_FCB nfs41_fcb = NFS41GetFcbExtension(RxContext->pFcb);
+        if (nfs41_fcb->BasicInfo.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
+            status = QueryCygwinSymlink(RxContext, query, info);
+            goto out;
+        } else {
+            const LONG LengthRequired = sizeof(FILE_FULL_EA_INFORMATION) +
+                NfsSymlinkTargetName.Length - sizeof(CHAR);
+            if (LengthRequired > RxContext->Info.LengthRemaining) {
+                status = STATUS_BUFFER_TOO_SMALL;
+                RxContext->InformationToReturn = LengthRequired;
+                goto out;
+            }
+            info->NextEntryOffset = 0;
+            info->Flags = 0;
+            info->EaValueLength = 0;
+            info->EaNameLength = (UCHAR)NfsActOnLink.Length;
+            RtlCopyMemory(info->EaName, NfsSymlinkTargetName.Buffer, 
+                NfsSymlinkTargetName.Length);
+            RxContext->Info.LengthRemaining = LengthRequired;
+            status = STATUS_SUCCESS;
+            goto out;
+        }
     }
 
     if (AnsiStrEq(&NfsV3Attributes, query->EaName, query->EaNameLength)) {