diff --git a/headers/os/drivers/Drivers.h b/headers/os/drivers/Drivers.h
index 3484dbfdf7..ff4e1e0071 100644
--- a/headers/os/drivers/Drivers.h
+++ b/headers/os/drivers/Drivers.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2011, Haiku Inc. All Rights Reserved.
+ * Copyright 2002-2013, Haiku Inc. All Rights Reserved.
  * Distributed under the terms of the MIT License.
  */
 #ifndef _DRIVERS_DRIVERS_H
@@ -106,6 +106,7 @@ enum {
 	B_GET_ICON_NAME,				/* get an icon name identifier */
 	B_GET_VECTOR_ICON,				/* retrieves the device's vector icon */
 	B_GET_DEVICE_NAME,				/* get name, string buffer */
+	B_TRIM_DEVICE,					/* trims blocks, see fs_trim_data */
 
 	B_GET_NEXT_OPEN_DEVICE = 1000,	/* obsolete, will be removed */
 	B_ADD_FIXED_DRIVER,				/* obsolete, will be removed */
@@ -169,6 +170,14 @@ typedef struct {
 } device_icon;
 
 
+/* B_TRIM_DEVICE data structure */
+typedef struct {
+	off_t	offset;					/* offset (in bytes) */
+	off_t	size;
+	off_t	trimmed_size;			/* filled on return */
+} fs_trim_data;
+
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/headers/private/fs_shell/fssh_api_wrapper.h b/headers/private/fs_shell/fssh_api_wrapper.h
index edb40a9458..b0d9a3dcd4 100644
--- a/headers/private/fs_shell/fssh_api_wrapper.h
+++ b/headers/private/fs_shell/fssh_api_wrapper.h
@@ -435,6 +435,10 @@
 #define B_SET_INTERRUPTABLE_IO		FSSH_B_SET_INTERRUPTABLE_IO
 #define B_FLUSH_DRIVE_CACHE			FSSH_B_FLUSH_DRIVE_CACHE
 #define B_GET_PATH_FOR_DEVICE		FSSH_B_GET_PATH_FOR_DEVICE
+#define B_GET_ICON_NAME				FSSH_B_GET_ICON_NAME
+#define B_GET_VECTOR_ICON			FSSH_B_GET_VECTOR_ICON
+#define B_GET_DEVICE_NAME			FSSH_B_GET_DEVICE_NAME
+#define B_TRIM_DEVICE				FSSH_B_TRIM_DEVICE
 #define B_GET_NEXT_OPEN_DEVICE		FSSH_B_GET_NEXT_OPEN_DEVICE
 #define B_ADD_FIXED_DRIVER			FSSH_B_ADD_FIXED_DRIVER
 #define B_REMOVE_FIXED_DRIVER		FSSH_B_REMOVE_FIXED_DRIVER
@@ -462,6 +466,7 @@
 #define driver_path				fssh_driver_path
 #define open_device_iterator	fssh_open_device_iterator
 #define device_icon				fssh_device_icon
+#define fs_trim_data			fssh_fs_trim_data
 
 
 ////////////////////////////////////////////////////////////////////////////////
diff --git a/headers/private/fs_shell/fssh_drivers.h b/headers/private/fs_shell/fssh_drivers.h
index a4d25bbd08..aa63da35d7 100644
--- a/headers/private/fs_shell/fssh_drivers.h
+++ b/headers/private/fs_shell/fssh_drivers.h
@@ -60,7 +60,7 @@ fssh_status_t		fssh_init_hardware(void);
 const char		  **fssh_publish_devices(void);
 fssh_device_hooks	*fssh_find_device(const char *name);
 fssh_status_t		fssh_init_driver(void);
-void				fssh_uninit_driver(void);	
+void				fssh_uninit_driver(void);
 
 extern int32_t	fssh_api_version;
 
@@ -111,17 +111,20 @@ enum {
 										/* B_DEV_MEDIA_CHANGE_REQUESTED: user */
 										/*  pressed button on drive */
 										/* B_DEV_DOOR_OPEN: door open */
-	
+
 	FSSH_B_LOAD_MEDIA,					/* load the media if supported */
-	
+
 	FSSH_B_GET_BIOS_DRIVE_ID,			/* get bios id for this device */
 
 	FSSH_B_SET_UNINTERRUPTABLE_IO,		/* prevent cntl-C from interrupting i/o */
 	FSSH_B_SET_INTERRUPTABLE_IO,		/* allow cntl-C to interrupt i/o */
 
 	FSSH_B_FLUSH_DRIVE_CACHE,			/* flush drive cache */
-
 	FSSH_B_GET_PATH_FOR_DEVICE,			/* get the absolute path of the device */
+	FSSH_B_GET_ICON_NAME,				/* get an icon name identifier */
+	FSSH_B_GET_VECTOR_ICON,				/* retrieves the device's vector icon */
+	FSSH_B_GET_DEVICE_NAME,				/* get name, string buffer */
+	FSSH_B_TRIM_DEVICE,					/* trims blocks, see fs_trim_data */
 
 	FSSH_B_GET_NEXT_OPEN_DEVICE = 1000,	/* iterate through open devices */
 	FSSH_B_ADD_FIXED_DRIVER,			/* private */
@@ -196,7 +199,7 @@ typedef char	fssh_driver_path[256];
 
 typedef struct {
 	uint32_t	cookie;			/* must be set to 0 before iterating */
-	char		device[256];	/* device path */	
+	char		device[256];	/* device path */
 } fssh_open_device_iterator;
 
 
@@ -210,6 +213,14 @@ typedef struct {
 } fssh_device_icon;
 
 
+/* B_TRIM_DEVICE data structure */
+typedef struct {
+	fssh_off_t	offset;					/* offset (in bytes) */
+	fssh_off_t	size;
+	fssh_off_t	trimmed_size;			/* filled on return */
+} fssh_fs_trim_data;
+
+
 #ifdef __cplusplus
 }
 #endif