/* INCLUDES *****************************************************************/
-#include <limits.h>
#include <ddk/ntddk.h>
-#include <internal/pool.h>
+#include <internal/se.h>
#define NDEBUG
#include <internal/debug.h>
-/* GLOBALS ******************************************************************/
-
-typedef struct
-{
- CSHORT Type;
- CSHORT Size;
- UNICODE_STRING TargetName;
- OBJECT_ATTRIBUTES Target;
-} SYMLNK_OBJECT, *PSYMLNK_OBJECT;
-
-POBJECT_TYPE IoSymbolicLinkType = NULL;
-
-static GENERIC_MAPPING IopSymbolicLinkMapping = {
- STANDARD_RIGHTS_READ|SYMBOLIC_LINK_QUERY,
- STANDARD_RIGHTS_WRITE,
- STANDARD_RIGHTS_EXECUTE|SYMBOLIC_LINK_QUERY,
- SYMBOLIC_LINK_ALL_ACCESS};
-
-#define TAG_SYMLINK_TTARGET TAG('S', 'Y', 'T', 'T')
-#define TAG_SYMLINK_TARGET TAG('S', 'Y', 'M', 'T')
-
-/* FUNCTIONS *****************************************************************/
-
-
-/**********************************************************************
- * NAME INTERNAL
- * IopCreateSymbolicLink
- *
- * DESCRIPTION
- *
- * ARGUMENTS
- *
- * RETURNN VALUE
- * Status.
- *
- * REVISIONS
- */
-NTSTATUS STDCALL
-IopCreateSymbolicLink(PVOID Object,
- PVOID Parent,
- PWSTR RemainingPath,
- POBJECT_ATTRIBUTES ObjectAttributes)
-{
- return(STATUS_SUCCESS);
-}
+/* FUNCTIONS ****************************************************************/
/**********************************************************************
- * NAME INTERNAL
- * IopParseSymbolicLink
+ * NAME EXPORTED
+ * IoCreateSymbolicLink
*
* DESCRIPTION
*
* RETURN VALUE
*
* REVISIONS
+ *
*/
NTSTATUS STDCALL
-IopParseSymbolicLink(PVOID Object,
- PVOID * NextObject,
- PUNICODE_STRING FullPath,
- PWSTR * RemainingPath,
- ULONG Attributes)
+IoCreateSymbolicLink(PUNICODE_STRING SymbolicLinkName,
+ PUNICODE_STRING DeviceName)
{
- PSYMLNK_OBJECT SymlinkObject = (PSYMLNK_OBJECT) Object;
- UNICODE_STRING TargetPath;
+ OBJECT_ATTRIBUTES ObjectAttributes;
+ HANDLE Handle;
+ NTSTATUS Status;
- DPRINT("IopParseSymbolicLink (RemainingPath %S)\n", *RemainingPath);
- /*
- * Stop parsing if the entire path has been parsed and
- * the desired object is a symbolic link object.
- */
- if (((*RemainingPath == NULL) || (**RemainingPath == 0)) &&
- (Attributes & OBJ_OPENLINK))
- {
- DPRINT("Parsing stopped!\n");
- *NextObject = NULL;
- return STATUS_SUCCESS;
- }
+ assert_irql(PASSIVE_LEVEL);
- /* build the expanded path */
- TargetPath.MaximumLength = SymlinkObject->TargetName.Length + sizeof(WCHAR);
- if (RemainingPath && *RemainingPath)
- {
- TargetPath.MaximumLength += (wcslen(*RemainingPath) * sizeof(WCHAR));
- }
- TargetPath.Length = TargetPath.MaximumLength - sizeof(WCHAR);
- TargetPath.Buffer = ExAllocatePoolWithTag(NonPagedPool,
- TargetPath.MaximumLength,
- TAG_SYMLINK_TTARGET);
- wcscpy(TargetPath.Buffer, SymlinkObject->TargetName.Buffer);
- if (RemainingPath && *RemainingPath)
- {
- wcscat(TargetPath.Buffer, *RemainingPath);
- }
+ DPRINT("IoCreateSymbolicLink(SymbolicLinkName %wZ, DeviceName %wZ)\n",
+ SymbolicLinkName,
+ DeviceName);
- /* transfer target path buffer into FullPath */
- RtlFreeUnicodeString(FullPath);
- FullPath->Length = TargetPath.Length;
- FullPath->MaximumLength = TargetPath.MaximumLength;
- FullPath->Buffer = TargetPath.Buffer;
+ InitializeObjectAttributes(&ObjectAttributes,
+ SymbolicLinkName,
+ OBJ_PERMANENT,
+ NULL,
+ SePublicDefaultSd);
- /* reinitialize RemainingPath for reparsing */
- *RemainingPath = FullPath->Buffer;
+ Status = NtCreateSymbolicLinkObject(&Handle,
+ SYMBOLIC_LINK_ALL_ACCESS,
+ &ObjectAttributes,
+ DeviceName);
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT1("NtCreateSymbolicLinkObject() failed (Status %lx)\n", Status);
+ return(Status);
+ }
- *NextObject = NULL;
- return STATUS_REPARSE;
-}
+ NtClose(Handle);
-/**********************************************************************
- * NAME INTERNAL
- * IoInitSymbolicLinkImplementation
- *
- * DESCRIPTION
- *
- * ARGUMENTS
- * None.
- *
- * RETURNN VALUE
- * None.
- *
- * REVISIONS
- */
-VOID IoInitSymbolicLinkImplementation (VOID)
-{
- IoSymbolicLinkType = ExAllocatePool(NonPagedPool, sizeof(OBJECT_TYPE));
-
- IoSymbolicLinkType->Tag = TAG('S', 'Y', 'M', 'T');
- IoSymbolicLinkType->TotalObjects = 0;
- IoSymbolicLinkType->TotalHandles = 0;
- IoSymbolicLinkType->MaxObjects = ULONG_MAX;
- IoSymbolicLinkType->MaxHandles = ULONG_MAX;
- IoSymbolicLinkType->PagedPoolCharge = 0;
- IoSymbolicLinkType->NonpagedPoolCharge = sizeof (SYMLNK_OBJECT);
- IoSymbolicLinkType->Mapping = &IopSymbolicLinkMapping;
- IoSymbolicLinkType->Dump = NULL;
- IoSymbolicLinkType->Open = NULL;
- IoSymbolicLinkType->Close = NULL;
- IoSymbolicLinkType->Delete = NULL;
- IoSymbolicLinkType->Parse = IopParseSymbolicLink;
- IoSymbolicLinkType->Security = NULL;
- IoSymbolicLinkType->QueryName = NULL;
- IoSymbolicLinkType->OkayToClose = NULL;
- IoSymbolicLinkType->Create = IopCreateSymbolicLink;
- IoSymbolicLinkType->DuplicationNotify = NULL;
-
- RtlInitUnicodeStringFromLiteral(&IoSymbolicLinkType->TypeName,
- L"SymbolicLink");
+ return(STATUS_SUCCESS);
}
/**********************************************************************
* NAME EXPORTED
- * NtOpenSymbolicLinkObject
+ * IoCreateUnprotectedSymbolicLink
*
* DESCRIPTION
*
*
*/
NTSTATUS STDCALL
-NtOpenSymbolicLinkObject(OUT PHANDLE LinkHandle,
- IN ACCESS_MASK DesiredAccess,
- IN POBJECT_ATTRIBUTES ObjectAttributes)
+IoCreateUnprotectedSymbolicLink(PUNICODE_STRING SymbolicLinkName,
+ PUNICODE_STRING DeviceName)
{
- DPRINT("NtOpenSymbolicLinkObject (Name %wZ)\n",
- ObjectAttributes->ObjectName);
+ SECURITY_DESCRIPTOR SecurityDescriptor;
+ OBJECT_ATTRIBUTES ObjectAttributes;
+ HANDLE Handle;
+ NTSTATUS Status;
- return(ObOpenObjectByName(ObjectAttributes,
- IoSymbolicLinkType,
- NULL,
- UserMode,
- DesiredAccess,
- NULL,
- LinkHandle));
-}
+ assert_irql(PASSIVE_LEVEL);
+ DPRINT("IoCreateUnprotectedSymbolicLink(SymbolicLinkName %wZ, DeviceName %wZ)\n",
+ SymbolicLinkName,
+ DeviceName);
-/**********************************************************************
- * NAME EXPORTED
- * NtQuerySymbolicLinkObject
- *
- * DESCRIPTION
- *
- * ARGUMENTS
- *
- * RETURN VALUE
- *
- * REVISIONS
- *
- */
-NTSTATUS STDCALL
-NtQuerySymbolicLinkObject(IN HANDLE LinkHandle,
- IN OUT PUNICODE_STRING LinkTarget,
- OUT PULONG ReturnedLength OPTIONAL)
-{
- PSYMLNK_OBJECT SymlinkObject;
- NTSTATUS Status;
-
- Status = ObReferenceObjectByHandle(LinkHandle,
- SYMBOLIC_LINK_QUERY,
- IoSymbolicLinkType,
- UserMode,
- (PVOID *)&SymlinkObject,
- NULL);
+ Status = RtlCreateSecurityDescriptor(&SecurityDescriptor,
+ SECURITY_DESCRIPTOR_REVISION);
if (!NT_SUCCESS(Status))
{
+ DPRINT1("RtlCreateSecurityDescriptor() failed (Status %lx)\n", Status);
return(Status);
}
-
- RtlCopyUnicodeString(LinkTarget,
- SymlinkObject->Target.ObjectName);
- if (ReturnedLength != NULL)
+
+ Status = RtlSetDaclSecurityDescriptor(&SecurityDescriptor,
+ TRUE,
+ NULL,
+ TRUE);
+ if (!NT_SUCCESS(Status))
{
- *ReturnedLength = SymlinkObject->Target.Length;
+ DPRINT1("RtlSetDaclSecurityDescriptor() failed (Status %lx)\n", Status);
+ return(Status);
}
- ObDereferenceObject(SymlinkObject);
-
- return(STATUS_SUCCESS);
-}
-
-
-/**********************************************************************
- * NAME EXPORTED
- * IoCreateUnprotectedSymbolicLink
- *
- * DESCRIPTION
- *
- * ARGUMENTS
- *
- * RETURN VALUE
- *
- * REVISIONS
- *
- */
-NTSTATUS STDCALL
-IoCreateUnprotectedSymbolicLink(PUNICODE_STRING SymbolicLinkName,
- PUNICODE_STRING DeviceName)
-{
- return(IoCreateSymbolicLink(SymbolicLinkName,
- DeviceName));
-}
+ InitializeObjectAttributes(&ObjectAttributes,
+ SymbolicLinkName,
+ OBJ_PERMANENT,
+ NULL,
+ &SecurityDescriptor);
-/**********************************************************************
- * NAME EXPORTED
- * IoCreateSymbolicLink
- *
- * DESCRIPTION
- *
- * ARGUMENTS
- *
- * RETURN VALUE
- *
- * REVISIONS
- *
- */
-NTSTATUS STDCALL
-IoCreateSymbolicLink(PUNICODE_STRING SymbolicLinkName,
- PUNICODE_STRING DeviceName)
-{
- OBJECT_ATTRIBUTES ObjectAttributes;
- PSYMLNK_OBJECT SymbolicLink;
- NTSTATUS Status;
-
- assert_irql(PASSIVE_LEVEL);
+ Status = NtCreateSymbolicLinkObject(&Handle,
+ SYMBOLIC_LINK_ALL_ACCESS,
+ &ObjectAttributes,
+ DeviceName);
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT1("NtCreateSymbolicLinkObject() failed (Status %lx)\n", Status);
+ return(Status);
+ }
- DPRINT(
- "IoCreateSymbolicLink(SymbolicLinkName %S, DeviceName %S)\n",
- SymbolicLinkName->Buffer,
- DeviceName->Buffer
- );
+ NtClose(Handle);
- InitializeObjectAttributes(
- & ObjectAttributes,
- SymbolicLinkName,
- OBJ_PERMANENT,
- NULL,
- NULL
- );
- Status = ObCreateObject(
- NULL,
- SYMBOLIC_LINK_ALL_ACCESS,
- & ObjectAttributes,
- IoSymbolicLinkType,
- (PVOID*)&SymbolicLink
- );
- if (!NT_SUCCESS(Status))
- {
- return(Status);
- }
- SymbolicLink->TargetName.Length = 0;
- SymbolicLink->TargetName.MaximumLength =
- ((wcslen(DeviceName->Buffer) + 1) * sizeof(WCHAR));
- SymbolicLink->TargetName.Buffer =
- ExAllocatePoolWithTag(NonPagedPool,
- SymbolicLink->TargetName.MaximumLength,
- TAG_SYMLINK_TARGET);
- RtlCopyUnicodeString(
- & (SymbolicLink->TargetName),
- DeviceName
- );
-
- DPRINT("DeviceName %S\n", SymbolicLink->TargetName.Buffer);
-
- InitializeObjectAttributes(
- & (SymbolicLink->Target),
- & (SymbolicLink->TargetName),
- 0,
- NULL,
- NULL
- );
-
- DPRINT("%s() = STATUS_SUCCESS\n",__FUNCTION__);
- ObDereferenceObject( SymbolicLink );
- return STATUS_SUCCESS;
+ return(STATUS_SUCCESS);
}
return(Status);
}
-
-/**********************************************************************
- * NAME (EXPORTED as Zw)
- * NtCreateSymbolicLinkObject
- *
- * DESCRIPTION
- *
- * ARGUMENTS
- *
- * RETURN VALUE
- *
- * REVISIONS
- *
- */
-NTSTATUS STDCALL
-NtCreateSymbolicLinkObject(OUT PHANDLE SymbolicLinkHandle,
- IN ACCESS_MASK DesiredAccess,
- IN POBJECT_ATTRIBUTES ObjectAttributes,
- IN PUNICODE_STRING DeviceName)
-{
- PSYMLNK_OBJECT SymbolicLink;
- NTSTATUS Status;
-
- assert_irql(PASSIVE_LEVEL);
-
- DPRINT("NtCreateSymbolicLinkObject(SymbolicLinkHandle %p, DesiredAccess %ul, ObjectAttributes %p, DeviceName %S)\n",
- SymbolicLinkHandle,
- DesiredAccess,
- ObjectAttributes,
- DeviceName->Buffer);
-
- Status = ObCreateObject(SymbolicLinkHandle,
- DesiredAccess,
- ObjectAttributes,
- IoSymbolicLinkType,
- (PVOID*)&SymbolicLink);
- if (!NT_SUCCESS(Status))
- {
- return(Status);
- }
-
- SymbolicLink->TargetName.Length = 0;
- SymbolicLink->TargetName.MaximumLength =
- ((wcslen(DeviceName->Buffer) + 1) * sizeof(WCHAR));
- SymbolicLink->TargetName.Buffer =
- ExAllocatePoolWithTag(NonPagedPool,
- SymbolicLink->TargetName.MaximumLength,
- TAG_SYMLINK_TARGET);
- RtlCopyUnicodeString(&SymbolicLink->TargetName,
- DeviceName);
-
- DPRINT("DeviceName %S\n", SymbolicLink->TargetName.Buffer);
-
- InitializeObjectAttributes(&SymbolicLink->Target,
- &SymbolicLink->TargetName,
- 0,
- NULL,
- NULL);
-
- DPRINT("%s() = STATUS_SUCCESS\n",__FUNCTION__);
- ObDereferenceObject(SymbolicLink);
- return(STATUS_SUCCESS);
-}
-
/* EOF */
git://git.jankratochvil.net / reactos.git / blobdiff