entered advanced internal development stage.

1 files changed, 69 insertions, 0 deletions

diff --git a/src/fs/ntapi_tt_open_physical_parent_directory.c b/src/fs/ntapi_tt_open_physical_parent_directory.c
new file mode 100644
index 0000000..68d282b
--- /dev/null
+++ b/src/fs/ntapi_tt_open_physical_parent_directory.c
@@ -0,0 +1,69 @@
+/********************************************************/
+/*  ntapi: Native API core library                      */
+/*  Copyright (C) 2013,2014,2015  Z. Gilboa             */
+/*  Released under GPLv2 and GPLv3; see COPYING.NTAPI.  */
+/********************************************************/
+
+#include <ntapi/ntapi.h>
+#include <ntapi/nt_file.h>
+#include "ntapi_impl.h"
+
+int32_t __stdcall __ntapi_tt_open_physical_parent_directory(
+	__out	void **		hparent,
+	__in	void *		hdir,
+	__out	uintptr_t *	buffer,
+	__in	uint32_t	buffer_size,
+	__in	uint32_t	desired_access,
+	__in	uint32_t	open_options,
+	__out	int32_t *	type)
+{
+	int32_t				status;
+	nt_oa				oa;
+	nt_iosb				iosb;
+	wchar16_t *			wch;
+	nt_unicode_string *		path;
+	uint32_t			len;
+
+	path = (nt_unicode_string *)buffer;
+
+	if ((status = __ntapi->zw_query_object(
+			hdir,
+			NT_OBJECT_NAME_INFORMATION,
+			path,
+			buffer_size,
+			&len)))
+		return status;
+	else if (len == sizeof(nt_unicode_string))
+		return NT_STATUS_BAD_FILE_TYPE;
+
+	wch = path->buffer + (path->strlen / sizeof(uint16_t));
+	while ((--wch >= path->buffer) && (*wch != '\\'));
+
+	if (wch == path->buffer )
+		return NT_STATUS_MORE_PROCESSING_REQUIRED;
+
+	path->strlen = sizeof(uint16_t) * (uint16_t)(wch-path->buffer);
+	path->maxlen = 0;
+
+	/* oa */
+	oa.len = sizeof(nt_oa);
+	oa.root_dir = 0;
+	oa.obj_name = path;
+	oa.obj_attr = 0;
+	oa.sec_desc = 0;
+	oa.sec_qos  = 0;
+
+	/* default access */
+	desired_access = desired_access
+		? desired_access
+		: NT_SEC_SYNCHRONIZE | NT_FILE_READ_ATTRIBUTES | NT_FILE_READ_ACCESS;
+
+	/* open parent directory */
+	return __ntapi->zw_open_file(
+		hparent,
+		desired_access,
+		&oa,
+		&iosb,
+		NT_FILE_SHARE_READ | NT_FILE_SHARE_WRITE,
+		open_options | NT_FILE_DIRECTORY_FILE);
+}