reactos/ntoskrnl/io/iomgr/symlink.c

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/*
* PROJECT: ReactOS Kernel
* LICENSE: GPL - See COPYING in the top level directory
* FILE: ntoskrnl/io/iomgr/symlink.c
* PURPOSE: I/O Wrappers for Symbolic Links
* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
* Eric Kohl
*/
/* INCLUDES *****************************************************************/
#include <ntoskrnl.h>
#define NDEBUG
#include <debug.h>
/* FUNCTIONS ****************************************************************/
/*
* @implemented
*/
NTSTATUS
NTAPI
IoCreateSymbolicLink(IN PUNICODE_STRING SymbolicLinkName,
IN PUNICODE_STRING DeviceName)
{
OBJECT_ATTRIBUTES ObjectAttributes;
HANDLE Handle;
NTSTATUS Status;
PAGED_CODE();
/* Initialize the object attributes and create the link */
InitializeObjectAttributes(&ObjectAttributes,
SymbolicLinkName,
OBJ_KERNEL_HANDLE | OBJ_PERMANENT | OBJ_CASE_INSENSITIVE,
NULL,
SePublicDefaultSd);
Status = ZwCreateSymbolicLinkObject(&Handle,
SYMBOLIC_LINK_ALL_ACCESS,
&ObjectAttributes,
DeviceName);
if (NT_SUCCESS(Status)) ZwClose(Handle);
/* Return status */
return Status;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
IoCreateUnprotectedSymbolicLink(IN PUNICODE_STRING SymbolicLinkName,
IN PUNICODE_STRING DeviceName)
{
SECURITY_DESCRIPTOR SecurityDescriptor;
OBJECT_ATTRIBUTES ObjectAttributes;
HANDLE Handle;
NTSTATUS Status;
PAGED_CODE();
/* Create an SD */
Status = RtlCreateSecurityDescriptor(&SecurityDescriptor,
SECURITY_DESCRIPTOR_REVISION);
if (!NT_SUCCESS(Status)) return Status;
/* Set the DACL */
Status = RtlSetDaclSecurityDescriptor(&SecurityDescriptor,
TRUE,
NULL,
TRUE);
if (!NT_SUCCESS(Status)) return Status;
/* Initialize the object attributes and create the link */
InitializeObjectAttributes(&ObjectAttributes,
SymbolicLinkName,
OBJ_KERNEL_HANDLE | OBJ_PERMANENT | OBJ_CASE_INSENSITIVE,
NULL,
&SecurityDescriptor);
Status = ZwCreateSymbolicLinkObject(&Handle,
SYMBOLIC_LINK_ALL_ACCESS,
&ObjectAttributes,
DeviceName);
if (NT_SUCCESS(Status)) ZwClose(Handle);
/* Return status */
return Status;
}
/*
* @implemented
*/
NTSTATUS
NTAPI
IoDeleteSymbolicLink(IN PUNICODE_STRING SymbolicLinkName)
{
OBJECT_ATTRIBUTES ObjectAttributes;
HANDLE Handle;
NTSTATUS Status;
PAGED_CODE();
/* Initialize the object attributes and open the link */
InitializeObjectAttributes(&ObjectAttributes,
SymbolicLinkName,
OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE,
NULL,
NULL);
Status = ZwOpenSymbolicLinkObject(&Handle, DELETE, &ObjectAttributes);
if (!NT_SUCCESS(Status)) return Status;
/* Make the link temporary and close its handle */
Status = ZwMakeTemporaryObject(Handle);
if (NT_SUCCESS(Status)) ZwClose(Handle);
/* Return status */
return Status;
}
/* EOF */