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[NTOSKRNL]

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Fix returned symbolic links in IoGetDeviceInterfaces.

svn path=/trunk/; revision=62249
This commit is contained in:
Timo Kreuzer 2014-02-18 19:53:48 +00:00
parent 9339f52e68
commit 7792a6513b
1 changed files with 7 additions and 4 deletions
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11
reactos/ntoskrnl/io/iomgr/deviface.c
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@ -466,7 +466,7 @@ IoGetDeviceInterfaces(IN CONST GUID *InterfaceClassGuid,
goto cleanup;
}
/* Enumerate subkeys (ie the different device objets) */
/* Enumerate subkeys (i.e. the different device objects) */
while (TRUE)
{
Status = ZwEnumerateKey(
@ -729,14 +729,17 @@ IoGetDeviceInterfaces(IN CONST GUID *InterfaceClassGuid,
Status = STATUS_UNSUCCESSFUL;
goto cleanup;
}
KeyName.Length = KeyName.MaximumLength = (USHORT)bip->DataLength - 4 * sizeof(WCHAR);
KeyName.Buffer = &((PWSTR)bip->Data)[4];
KeyName.Length = KeyName.MaximumLength = (USHORT)bip->DataLength;
KeyName.Buffer = (PWSTR)bip->Data;
/* Fixup the prefix (from "\\?\") */
RtlCopyMemory(KeyName.Buffer, L"\\??\\", 4 * sizeof(WCHAR));
/* Add new symbolic link to symbolic link list */
if (ReturnBuffer.Length + KeyName.Length + sizeof(WCHAR) > ReturnBuffer.MaximumLength)
{
PWSTR NewBuffer;
ReturnBuffer.MaximumLength = (USHORT)max(ReturnBuffer.MaximumLength * 2,
ReturnBuffer.MaximumLength = (USHORT)max(ReturnBuffer.MaximumLength * sizeof(WCHAR),
(USHORT)(ReturnBuffer.Length +
KeyName.Length +
2 * sizeof(WCHAR)));