From 0e25b018afe1d358f8734205c2b42e1eb045ccb6 Mon Sep 17 00:00:00 2001
From: midipix <writeonce@midipix.org>
Date: May 07 2018 05:24:23 +0000
Subject: fs interfaces: ntapi_tt_open_volume_by_guid(): initial integration.


---

diff --git a/include/ntapi/nt_file.h b/include/ntapi/nt_file.h
index 177612b..885a7d8 100644
--- a/include/ntapi/nt_file.h
+++ b/include/ntapi/nt_file.h
@@ -1214,4 +1214,13 @@ typedef int32_t __stdcall ntapi_tt_open_physical_parent_directory(
 	__in	uint32_t	open_options,
 	__out	int *		reserved);
 
+typedef int32_t	__stdcall ntapi_tt_open_volume_by_guid(
+	__out	void **			hfile,
+	__in	const nt_guid *		guid,
+	__in	uint32_t		desired_access,
+	__in	nt_object_attributes *	obj_attr,
+	__out	nt_io_status_block *	io_status_block,
+	__in	uint32_t		share_access,
+	__in	uint32_t		open_options);
+
 #endif
diff --git a/include/ntapi/ntapi.h b/include/ntapi/ntapi.h
index 79efeb9..3c2cfd6 100644
--- a/include/ntapi/ntapi.h
+++ b/include/ntapi/ntapi.h
@@ -392,6 +392,7 @@ typedef struct _ntapi_vtbl {
 	ntapi_tt_get_file_handle_type *			tt_get_file_handle_type;
 	ntapi_tt_open_logical_parent_directory *	tt_open_logical_parent_directory;
 	ntapi_tt_open_physical_parent_directory	*	tt_open_physical_parent_directory;
+	ntapi_tt_open_volume_by_guid *			tt_open_volume_by_guid;
 
 	/* nt_ipc.h */
 	ntapi_ipc_connect_by_attr *			ipc_connect_by_attr;
diff --git a/project/common.mk b/project/common.mk
index adafe4b..54c5629 100644
--- a/project/common.mk
+++ b/project/common.mk
@@ -14,6 +14,7 @@ COMMON_SRCS = \
 	src/fs/ntapi_tt_mount.c \
 	src/fs/ntapi_tt_open_logical_parent_directory.c \
 	src/fs/ntapi_tt_open_physical_parent_directory.c \
+	src/fs/ntapi_tt_open_volume_by_guid.c \
 	src/fs/ntapi_tt_stat.c \
 	src/fs/ntapi_tt_statfs.c \
 	src/guid/ntapi_tt_guid.c \
diff --git a/src/fs/ntapi_tt_open_volume_by_guid.c b/src/fs/ntapi_tt_open_volume_by_guid.c
new file mode 100644
index 0000000..4f6236c
--- /dev/null
+++ b/src/fs/ntapi_tt_open_volume_by_guid.c
@@ -0,0 +1,65 @@
+/********************************************************/
+/*  ntapi: Native API core library                      */
+/*  Copyright (C) 2013--2018  Z. Gilboa                 */
+/*  Released under GPLv2 and GPLv3; see COPYING.NTAPI.  */
+/********************************************************/
+
+#include <ntapi/ntapi.h>
+#include <ntapi/nt_file.h>
+#include "ntapi_impl.h"
+
+struct __ntapi_volume_name {
+	wchar16_t		global[4];
+	wchar16_t		volume[6];
+	nt_guid_str_utf16	guid;
+};
+
+int32_t	__stdcall __ntapi_tt_open_volume_by_guid(
+	__out	void **			hfile,
+	__in	const nt_guid *		guid,
+	__in	uint32_t		access,
+	__in	nt_object_attributes *	oaarg,
+	__out	nt_io_status_block *	iosb,
+	__in	uint32_t		share,
+	__in	uint32_t		options)
+{
+	struct __ntapi_volume_name	name;
+	nt_unicode_string		path;
+	nt_object_attributes		oa;
+
+	if (!oaarg)
+		oaarg = &(nt_object_attributes){sizeof(*oaarg),0,0,0,0,0};
+
+	else if (oaarg->obj_name)
+		return NT_STATUS_INVALID_PARAMETER;
+
+	name.global[0] = '\\';
+	name.global[1] = '?';
+	name.global[2] = '?';
+	name.global[3] = '\\';
+
+	name.volume[0] = 'V';
+	name.volume[1] = 'o';
+	name.volume[2] = 'l';
+	name.volume[3] = 'u';
+	name.volume[4] = 'm';
+	name.volume[5] = 'e';
+
+	__ntapi->tt_guid_to_string_utf16(
+		guid,&name.guid);
+
+	path.strlen = sizeof(name);
+	path.maxlen = 0;
+	path.buffer = &name.global[0];
+
+	oa.len      = oaarg->len;
+	oa.root_dir = oaarg->root_dir;
+	oa.obj_name = &path;
+	oa.obj_attr = oaarg->obj_attr;
+	oa.sec_desc = oaarg->sec_desc;
+	oa.sec_qos  = oaarg->sec_qos;
+
+	return __ntapi->zw_open_file(
+		hfile,access,&oa,iosb,
+		share,options);
+}
diff --git a/src/internal/ntapi.c b/src/internal/ntapi.c
index f22f2c4..d1540dd 100644
--- a/src/internal/ntapi.c
+++ b/src/internal/ntapi.c
@@ -187,6 +187,7 @@ static int32_t __fastcall __ntapi_init_once(ntapi_vtbl ** pvtbl)
 	__ntapi->tt_get_file_handle_type			= __ntapi_tt_get_file_handle_type;
 	__ntapi->tt_open_logical_parent_directory		= __ntapi_tt_open_logical_parent_directory;
 	__ntapi->tt_open_physical_parent_directory		= __ntapi_tt_open_physical_parent_directory;
+	__ntapi->tt_open_volume_by_guid				= __ntapi_tt_open_volume_by_guid;
 
 	/* nt_ipc.h */
 	__ntapi->ipc_connect_by_attr				= __ntapi_ipc_connect_by_attr;
diff --git a/src/internal/ntapi_fnapi.h b/src/internal/ntapi_fnapi.h
index 3e309bd..5630fb7 100644
--- a/src/internal/ntapi_fnapi.h
+++ b/src/internal/ntapi_fnapi.h
@@ -47,6 +47,7 @@ ntapi_tt_crc64_table				__ntapi_tt_crc64_table;
 ntapi_tt_get_file_handle_type			__ntapi_tt_get_file_handle_type;
 ntapi_tt_open_logical_parent_directory		__ntapi_tt_open_logical_parent_directory;
 ntapi_tt_open_physical_parent_directory		__ntapi_tt_open_physical_parent_directory;
+ntapi_tt_open_volume_by_guid			__ntapi_tt_open_volume_by_guid;
 
 
 /* nt_ipc.h */