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[NTOSKRNL] Don't lock file object on close if we're not called by Ob

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IopCloseFile can be called by IopDeleteFile. In that situation, it
doesn't set any process as first parameter. Furthermore, we are in a
situation where it's not required to lock the file object (see the
assert before the call).
This commit is contained in:
Pierre Schweitzer 2018-09-29 16:21:44 +02:00
parent 6f138e2811
commit cf25432eed
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GPG key ID: 7545556C3D585B0B
1 changed files with 10 additions and 2 deletions
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12
ntoskrnl/io/iomgr/file.c
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@ -2033,7 +2033,11 @@ IopCloseFile(IN PEPROCESS Process OPTIONAL,
FileObject->Flags |= FO_HANDLE_CREATED;
/* Check if this is a sync FO and lock it */
if (FileObject->Flags & FO_SYNCHRONOUS_IO) IopLockFileObject(FileObject);
if (Process != NULL &&
BooleanFlagOn(FileObject->Flags, FO_SYNCHRONOUS_IO))
{
IopLockFileObject(FileObject);
}
/* Clear and set up Events */
KeClearEvent(&FileObject->Event);
@ -2078,7 +2082,11 @@ IopCloseFile(IN PEPROCESS Process OPTIONAL,
IoFreeIrp(Irp);
/* Release the lock if we were holding it */
if (FileObject->Flags & FO_SYNCHRONOUS_IO) IopUnlockFileObject(FileObject);
if (Process != NULL &&
BooleanFlagOn(FileObject->Flags, FO_SYNCHRONOUS_IO))
{
IopUnlockFileObject(FileObject);
}
}
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