[reactos] 01/03: [FASTFAT] When not able to lock a volume due to open handles, print open handles

[Pierre Schweitzer]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=27773dbb3f1ab3f93a24a…

commit 27773dbb3f1ab3f93a24a742bec91676bf3a70a4
Author: Pierre Schweitzer <pierre(a)reactos.org>
AuthorDate: Sun Dec 17 18:19:03 2017 +0100

    [FASTFAT] When not able to lock a volume due to open handles, print open handles
---
 drivers/filesystems/fastfat/fsctl.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/filesystems/fastfat/fsctl.c b/drivers/filesystems/fastfat/fsctl.c
index a406276ee6..f059410044 100644
--- a/drivers/filesystems/fastfat/fsctl.c
+++ b/drivers/filesystems/fastfat/fsctl.c
@@ -1115,6 +1115,22 @@ VfatLockOrUnlockVolume(
     /* Deny locking if we're not alone */
     if (Lock && DeviceExt->OpenHandleCount != 1)
     {
+        PLIST_ENTRY ListEntry;
+
+        DPRINT1("Can't lock: %u opened\n", DeviceExt->OpenHandleCount);
+
+        ListEntry = DeviceExt->FcbListHead.Flink;
+        while (ListEntry != &DeviceExt->FcbListHead)
+        {
+            Fcb = CONTAINING_RECORD(ListEntry, VFATFCB, FcbListEntry);
+            ListEntry = ListEntry->Flink;
+
+            if (Fcb->OpenHandleCount  > 0)
+            {
+                DPRINT1("Opened (%u - %u): %wZ\n", Fcb->OpenHandleCount,
Fcb->RefCount, &Fcb->PathNameU);
+            }
+        }
+
         return STATUS_ACCESS_DENIED;
     }