Data Structures
struct	SHELL_FILE_ARG

struct	HANDLE_ENUMERATOR

struct	PROTOCOL_INFO

struct	PROTOCOL_INFO_ENUMERATOR

struct	EFI_SHELL_ENVIRONMENT2
	EFI_SHELL_ENVIRONMENT2 protocol structure. More...

Macros
#define	DEFAULT_INIT_ROW 1

#define	DEFAULT_AUTO_LF FALSE

#define	SHELL_FILE_ARG_SIGNATURE SIGNATURE_32 ('g', 'r', 'a', 'f')
	Signature for SHELL_FILE_ARG. More...

#define	SHELL_ENVIRONMENT_PROTOCOL_GUID

#define	EFI_SE_EXT_SIGNATURE_GUID

#define	EFI_SHELL_MAJOR_VER 0x00000001
	Major version of the EFI_SHELL_ENVIRONMENT2. More...

#define	EFI_SHELL_MINOR_VER 0x00000000
	Minor version of the EFI_SHELL_ENVIRONMENT2. More...

#define	PROTOCOL_INFO_SIGNATURE SIGNATURE_32 ('s', 'p', 'i', 'n')

#define	EFI_SHELL_COMPATIBLE_MODE_VER L"1.1.1"
	The string for lowest version this shell supports. More...

#define	EFI_SHELL_ENHANCED_MODE_VER L"1.1.2"
	The string for highest version this shell supports. More...

Typedefs
typedef IN VOID *	Interface

typedef IN EFI_SYSTEM_TABLE *	SystemTable

typedef IN CHAR16 *	CommandLine

typedef IN CHAR16 IN BOOLEAN	DebugOutput

typedef CHAR16 EFIAPI	SHELLENV_GET_ENV (IN CHAR16 *Name)

typedef CHAR16 EFIAPI	SHELLENV_GET_MAP (IN CHAR16 *Name)

typedef IN CHAR16 *	Cmd

typedef IN CHAR16 IN SHELLCMD_GET_LINE_HELP	GetLineHelp

typedef IN SHELLENV_DUMP_PROTOCOL_INFO	DumpToken

typedef IN SHELLENV_DUMP_PROTOCOL_INFO IN SHELLENV_DUMP_PROTOCOL_INFO	DumpInfo

typedef IN SHELLENV_DUMP_PROTOCOL_INFO IN SHELLENV_DUMP_PROTOCOL_INFO IN CHAR16 *	IdString

typedef CHAR16 EFIAPI	SHELLENV_GET_PROT (IN EFI_GUID *Protocol, IN BOOLEAN GenId)

typedef CHAR16 EFIAPI	SHELLENV_CUR_DIR (IN CHAR16 *DeviceName)

typedef IN OUT LIST_ENTRY *	ListHead

typedef EFI_SHELL_INTERFACE EFIAPI	SHELLENV_NEW_SHELL (IN EFI_HANDLE ImageHandle)

typedef IN BOOLEAN	AutoWrap

typedef IN OUT EFI_SIMPLE_TEXT_INPUT_PROTOCOL **	ConIn

typedef IN OUT EFI_SIMPLE_TEXT_INPUT_PROTOCOL IN EFI_HANDLE	ConOutHandle

typedef IN OUT EFI_SIMPLE_TEXT_INPUT_PROTOCOL IN EFI_HANDLE IN OUT EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL **	ConOut

typedef IN BOOLEAN	UseComponentName

typedef IN BOOLEAN IN BOOLEAN	UseDevicePath

typedef IN BOOLEAN IN BOOLEAN IN CHAR8 *	Language

typedef IN BOOLEAN IN BOOLEAN IN CHAR8 IN OUT CHAR16 **	BestDeviceName

typedef IN BOOLEAN IN BOOLEAN IN CHAR8 IN OUT CHAR16 OUT EFI_STATUS *	ConfigurationStatus

typedef IN BOOLEAN IN BOOLEAN IN CHAR8 IN OUT CHAR16 OUT EFI_STATUS OUT EFI_STATUS *	DiagnosticsStatus

typedef IN BOOLEAN IN BOOLEAN IN CHAR8 IN OUT CHAR16 OUT EFI_STATUS OUT EFI_STATUS IN BOOLEAN	Display

typedef IN BOOLEAN IN BOOLEAN IN CHAR8 IN OUT CHAR16 OUT EFI_STATUS OUT EFI_STATUS IN BOOLEAN IN UINTN	Indent

typedef EFI_DEVICE_PATH_PROTOCOL EFIAPI	SHELLENV_NAME_TO_PATH (IN CHAR16 *Path)

typedef IN BOOLEAN	ConsistMapping

typedef IN BOOLEAN OUT CHAR16 **	Name

typedef OUT EFI_DEVICE_PATH_PROTOCOL **	DevPath

Functions
typedef	VOID (EFIAPI *SHELLENV_DUMP_PROTOCOL_INFO)(IN EFI_HANDLE Handle

typedef	EFI_STATUS (EFIAPI *SHELLENV_INTERNAL_COMMAND)(IN EFI_HANDLE ImageHandle

typedef	BOOLEAN (EFIAPI *SHELLENV_BATCH_IS_ACTIVE)(VOID)

typedef	UINT32 (EFIAPI *SHELLENV_GET_KEY_FILTER)(VOID)

typedef	UINTN (EFIAPI *RESET_HANDLE_ENUMERATOR)(IN UINTN EnumIndex)

Variables
EFI_GUID	gEfiShellEnvironment2Guid

EFI_GUID	gEfiShellEnvironment2ExtGuid

Detailed Description

Defines for EFI shell environment 2 ported to EDK II build environment. (no spec)

Copyright (c) 2005 - 2010, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Macro Definition Documentation

#define DEFAULT_AUTO_LF FALSE

#define DEFAULT_INIT_ROW 1

#define EFI_SE_EXT_SIGNATURE_GUID

Value:

{ \
    0xd2c18636, 0x40e5, 0x4eb5, {0xa3, 0x1b, 0x36, 0x69, 0x5f, 0xd4, 0x2c, 0x87} \
  }

GUID for the shell environment2 extension (main GUID above).

#define EFI_SHELL_COMPATIBLE_MODE_VER L"1.1.1"

The string for lowest version this shell supports.

#define EFI_SHELL_ENHANCED_MODE_VER L"1.1.2"

The string for highest version this shell supports.

#define EFI_SHELL_MAJOR_VER 0x00000001

Major version of the EFI_SHELL_ENVIRONMENT2.

#define EFI_SHELL_MINOR_VER 0x00000000

Minor version of the EFI_SHELL_ENVIRONMENT2.

#define PROTOCOL_INFO_SIGNATURE SIGNATURE_32 ('s', 'p', 'i', 'n')

Signature for the PROTOCOL_INFO structure.

#define SHELL_ENVIRONMENT_PROTOCOL_GUID

Value:

{ \
    0x47c7b221, 0xc42a, 0x11d2, {0x8e, 0x57, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b} \
  }

GUID for the shell environment2 and shell environment.

#define SHELL_FILE_ARG_SIGNATURE SIGNATURE_32 ('g', 'r', 'a', 'f')

Signature for SHELL_FILE_ARG.

Typedef Documentation

typedef IN BOOLEAN AutoWrap

typedef IN BOOLEAN IN BOOLEAN IN CHAR8 IN OUT CHAR16** BestDeviceName

typedef IN CHAR16* Cmd

typedef IN CHAR16* CommandLine

typedef IN BOOLEAN IN BOOLEAN IN CHAR8 IN OUT CHAR16 OUT EFI_STATUS* ConfigurationStatus

typedef IN OUT EFI_SIMPLE_TEXT_INPUT_PROTOCOL** ConIn

typedef IN OUT EFI_SIMPLE_TEXT_INPUT_PROTOCOL IN EFI_HANDLE IN OUT EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL** ConOut

typedef IN OUT EFI_SIMPLE_TEXT_INPUT_PROTOCOL IN EFI_HANDLE ConOutHandle

typedef IN BOOLEAN ConsistMapping

typedef IN CHAR16 IN BOOLEAN DebugOutput

typedef OUT EFI_DEVICE_PATH_PROTOCOL** DevPath

typedef IN BOOLEAN IN BOOLEAN IN CHAR8 IN OUT CHAR16 OUT EFI_STATUS OUT EFI_STATUS* DiagnosticsStatus

typedef IN BOOLEAN IN BOOLEAN IN CHAR8 IN OUT CHAR16 OUT EFI_STATUS OUT EFI_STATUS IN BOOLEAN Display

typedef IN SHELLENV_DUMP_PROTOCOL_INFO IN SHELLENV_DUMP_PROTOCOL_INFO DumpInfo

typedef IN SHELLENV_DUMP_PROTOCOL_INFO DumpToken

typedef IN CHAR16 IN SHELLCMD_GET_LINE_HELP GetLineHelp

typedef IN SHELLENV_DUMP_PROTOCOL_INFO IN SHELLENV_DUMP_PROTOCOL_INFO IN CHAR16* IdString

typedef IN BOOLEAN IN BOOLEAN IN CHAR8 IN OUT CHAR16 OUT EFI_STATUS OUT EFI_STATUS IN BOOLEAN IN UINTN Indent

typedef IN VOID* Interface

typedef IN BOOLEAN IN BOOLEAN IN CHAR8* Language

typedef IN OUT LIST_ENTRY * ListHead

typedef IN BOOLEAN OUT CHAR16** Name

typedef CHAR16* EFIAPI* SHELLENV_CUR_DIR(IN CHAR16 *DeviceName)

This function returns a string array containing the current directory on a given device.

If DeviceName is specified, then return the current shell directory on that device. If DeviceName is NULL, then return the current directory on the current device. The caller us responsible to free the returned string when no longer required.

Parameters

[in] DeviceName The name of the device to get the current directory on, or NULL for current device.

Returns: String array with the current directory on the current or specified device.

typedef CHAR16* EFIAPI* SHELLENV_GET_ENV(IN CHAR16 *Name)

This function returns a shell environment variable value.

Parameters

[in] Name The pointer to the string with the shell environment variable name.

Return values

NULL	The shell environment variable's value could not be found.
!=NULL	The value of the shell environment variable Name.

typedef CHAR16* EFIAPI* SHELLENV_GET_MAP(IN CHAR16 *Name)

This function returns a shell environment map value.

Parameters

[in] Name The pointer to the string with the shell environment map name.

Return values

NULL	The shell environment map's value could not be found.
!=NULL	The value of the shell environment map Name.

typedef CHAR16* EFIAPI* SHELLENV_GET_PROT(IN EFI_GUID *Protocol, IN BOOLEAN GenId)

This function finds a protocol handle by a GUID.

This function will check for already known protocols by GUID and if one is found it will return the name of that protocol. If no name is found and GenId is TRUE it will generate ths string.

Parameters

[in]	Protocol	The GUID of the protocol to look for.
[in]	GenId	Whether to generate a name string if it is not found.

Returns: !NULL The Name of the protocol.

Return values

NULL	The Name was not found, and GenId was not TRUE.

typedef EFI_DEVICE_PATH_PROTOCOL* EFIAPI* SHELLENV_NAME_TO_PATH(IN CHAR16 *Path)

Convert a file system style name to a device path.

This function will convert a shell path name to a Device Path Protocol path. This function will allocate any required memory for this operation and it is the responsibility of the caller to free that memory when no longer required.

If anything prevents the complete conversion free any allocated memory and return NULL.

Parameters

[in] Path The path to convert.

Return values

!NULL	A pointer to the callee allocated Device Path.
NULL	The operation could not be completed.

typedef EFI_SHELL_INTERFACE* EFIAPI* SHELLENV_NEW_SHELL(IN EFI_HANDLE ImageHandle)

This function creates a new instance of the ShellInterface protocol for use on the ImageHandle.

This function is for internal shell usage. This will allocate and then populate EFI_SHELL_INTERFACE protocol. It is the caller's responsibility to free the memory.

Parameters

[in] ImageHandle The handle which will use the new ShellInterface protocol.

Returns: The newly allocated shell interface protocol.

typedef IN EFI_SYSTEM_TABLE* SystemTable

typedef IN BOOLEAN UseComponentName

typedef IN BOOLEAN IN BOOLEAN UseDevicePath

Function Documentation

typedef BOOLEAN ( EFIAPI * SHELLENV_BATCH_IS_ACTIVE )

This function determines whether a script file is currently being processed.

A script file (.nsh file) can contain a series of commands and this is useful to know for some shell commands whether they are being run manually or as part of a script.

Return values

TRUE	A script file is being processed.
FALSE	A script file is not being processed.

Get the status of the page break output mode.

Return values

FALSE	Page break output mode is not enabled.
TRUE	Page break output mode is enabled.

This function determines if the shell application should break.

This is used to inform a shell application that a break condition has been initiated. Long loops should check this to prevent delays to the break.

Return values

TRUE	A break has been signaled. The application should exit with EFI_ABORTED as soon as possible.
FALSE	Continue as normal.

This function determines if the caller is running under the root shell.

Return values

TRUE	The caller is running under the root shell.
FALSE	The caller is not running under the root shell.

typedef EFI_STATUS ( EFIAPI * SHELLENV_GET_FS_DEVICE_PATH )

This function is a prototype for each command internal to the EFI shell implementation. The specific command depends on the implementation. This is used when programatically adding shell commands.

Parameters

[in]	ImageHandle	The handle to the binary shell.
[in]	SystemTable	The pointer to the system table.

Return values

EFI_SUCCESS	The command completed.
other	An error occurred. Any error is possible depending on the implementation of the shell command.

This function is a prototype for one that gets a help string for a given command. This is used when programatically adding shell commands. Upon successful return the memory allocated is up to the caller to free.

Parameters

[in,out] Str Pointer to pointer to string to display for help.

Return values

EFI_SUCCESS The help string is in the parameter Str.

Execute a command line.

This function will run the CommandLine. This includes loading any required images, parsing any requires scripts, and if DebugOutput is TRUE printing errors encountered directly to the screen.

Parameters

[in]	ParentImageHandle	Handle of the image executing this operation.
[in]	CommandLine	The string command line to execute.
[in]	DebugOutput	TRUE indicates that errors should be printed directly. FALSE suppresses error messages.

Return values

EFI_SUCCESS	The command line executed and completed.
EFI_ABORTED	The operation aborted.
EFI_INVALID_PARAMETER	A parameter did not have a valid value.
EFI_OUT_OF_RESOURCES	A required memory allocation failed.

See Also: HandleProtocol

This function will add an internal command to the shell interface.

This will allocate all required memory, put the new command on the command list in the correct location.

Parameters

[in]	Handler	The handler function to call when the command gets called.
[in]	Cmd	The command name.
[in]	GetLineHelp	The function to call of type "get help" for this command.

Return values

EFI_SUCCESS	The command is now part of the command list.
EFI_OUT_OF_RESOURCES	A memory allocation failed.

See Also: SHELLENV_INTERNAL_COMMAND; SHELLCMD_GET_LINE_HELP

This function will open a group of files that match the Arg path, including support for wildcard characters ('?' and '*') in the Arg path. If there are any wildcard characters in the path this function will find any and all files that match the wildcards. It returns a double linked list based on the LIST_ENTRY linked list structure. Use this in conjunction with the SHELL_FILE_ARG_SIGNATURE to get the SHELL_FILE_ARG structures that are returned. The memory allocated by the callee for this list is freed by making a call to SHELLENV_FREE_FILE_LIST.

Parameters

[in]	Arg	The pointer Path to files to open.
[in,out]	ListHead	The pointer to the allocated and initialized list head upon which to append all opened file structures.

Return values

EFI_SUCCESS	One or more files was opened and a struct of each file's information was appended to ListHead.
EFI_OUT_OF_RESOURCES	A memory allocation failed.
EFI_NOT_FOUND	No matching files could be found.

See Also: SHELLENV_FREE_FILE_LIST

This frees all of the nodes under the ListHead, but not ListHead itself.

Parameters

[in,out] ListHead Pointer to list to free all nodes of.

Return values

EFI_SUCCESS This function always returns EFI_SUCCESS.

This is an internal shell function to enumerate the handle database.

This function gets the next handle in the handle database. If no handles are found, EFI_NOT_FOUND is returned. If the previous Handle was the last handle, it is set to NULL before returning.

This must be called after INIT_HANDLE_ENUMERATOR and before CLOSE_HANDLE_ENUMERATOR.

Parameters

[in,out] Handle The pointer to pointer to Handle. It is set on a sucessful return.

Return values

EFI_SUCCESS	The next handle in the handle database is *Handle.
EFI_NOT_FOUND	There is not another handle.

This is an internal shell function to enumerate the handle database.

This function skips the next SkipNum handles in the handle database. If there are not enough handles left to skip that many EFI_ACCESS_DENIED is returned and no skip is performed.

This must be called after INIT_HANDLE_ENUMERATOR and before CLOSE_HANDLE_ENUMERATOR.

Parameters

[in] SkipNum How many handles to skip

Return values

EFI_SUCCESS	The next handle in the handle database is *Handle
EFI_ACCESS_DENIED	There are not SkipNum handles left in the database

This function is an internal shell function for enumeration of protocols.

This function returns the next protocol on the list. If this is called immediately after initialization, it will return the first protocol on the list. If this is called immediately after reset, it will return the first protocol again.

This cannot be called after CLOSE_PROTOCOL_INFO_ENUMERATOR, but it must be called after INIT_PROTOCOL_INFO_ENUMERATOR.

Parameters

[in,out] ProtocolInfo The pointer to pointer to protocol information structure.

Return values

EFI_SUCCESS	The next protocol's information was sucessfully returned.
NULL	There are no more protocols.

This function is an internal shell function for enumeration of protocols.

This cannot be called after CLOSE_PROTOCOL_INFO_ENUMERATOR, but it must be called after INIT_PROTOCOL_INFO_ENUMERATOR.

This function does nothing and always returns EFI_SUCCESS.

Return values

EFI_SUCCESS Always returned (see above).

This function is used to retrieve a user-friendly display name for a handle.

If UseComponentName is TRUE then the component name protocol for this device or it's parent device (if required) will be used to obtain the name of the device. If UseDevicePath is TRUE it will get the human readable device path and return that. If both are TRUE it will try to use component name first and device path if that fails.

It will use either ComponentName or ComponentName2 protocol, depending on what is present.

This function will furthur verify whether the handle in question produced either EFI_DRIVER_CONFIGRATION_PROTOCOL or EFI_DRIVER_CONFIGURATION2_PROTOCOL and also whether the handle in question produced either EFI_DRIVER_DIAGNOSTICS_PROTOCOL or EFI_DRIVER_DIAGNOSTICS2_PROTOCOL.

Upon successful return, the memory for *BestDeviceName is up to the caller to free.

Parameters

[in]	DeviceHandle	The device handle whose name is desired.
[in]	UseComponentName	Whether to use the ComponentName protocol at all.
[in]	UseDevicePath	Whether to use the DevicePath protocol at all.
[in]	Language	The pointer to the language string to use.
[in,out]	BestDeviceName	The pointer to pointer to string allocated with the name.
[out]	ConfigurationStatus	The pointer to status for opening a Configuration protocol.
[out]	DiagnosticsStatus	The pointer to status for opening a Diagnostics protocol.
[in]	Display	Whether to Print this out to default Print location.
[in]	Indent	How many characters to indent the printing.

Return values

EFI_SUCCESS This function always returns EFI_SUCCESS.

This function gets the shell mode as stored in the shell environment "efishellmode". It will not fail.

Parameters

[out] Mode Returns a string representing one of the 2 supported modes of the shell.

Return values

EFI_SUCCESS This function always returns success.

Converts a device path into a file system map name.

If DevPath is NULL, then ASSERT.

This function looks through the shell environment map for a map whose device path matches the DevPath parameter. If one is found the Name is returned via Name parameter. If sucessful the caller must free the memory allocated for Name.

This function will use the internal lock to prevent changes to the map during the lookup operation.

Parameters

[in]	DevPath	The device path to search for a name for.
[in]	ConsistMapping	What state to verify map flag VAR_ID_CONSIST.
[out]	Name	On sucessful return the name of that device path.

Return values

EFI_SUCCESS	The DevPath was found and the name returned in Name.
EFI_OUT_OF_RESOURCES	A required memory allocation failed.
EFI_UNSUPPORTED	The DevPath was not found in the map.

This function will open a group of files that match the Arg path, but will not support the wildcard characters ('?' and '*') in the Arg path. If there are any wildcard characters in the path this function will return EFI_INVALID_PARAMETER. The return is a double linked list based on the LIST_ENTRY linked list structure. Use this in conjunction with the SHELL_FILE_ARG_SIGNATURE to get the SHELL_FILE_ARG structures that are returned. The memory allocated by the callee for this list is freed by making a call to SHELLENV_FREE_FILE_LIST.

Parameters

[in]	Arg	The pointer to the path of the files to be opened.
[in,out]	ListHead	The pointer to allocated and initialized list head upon which to append all the opened file structures.

Return values

EFI_SUCCESS	One or more files was opened and a struct of each file's information was appended to ListHead.
EFI_OUT_OF_RESOURCES	A memory allocation failed.
EFI_NOT_FOUND	No matching files could be found.

See Also: SHELLENV_FREE_FILE_LIST

This function removes duplicate file listings from lists.

This is a function for use with SHELLENV_FILE_META_ARG_NO_WILDCARD and SHELLENV_FILE_META_ARG. This function will verify that there are no duplicate files in the list of returned files. Any file listed twice will have one of its instances removed.

Parameters

[in] ListHead The pointer to linked list head that was returned from SHELLENV_FILE_META_ARG_NO_WILDCARD or SHELLENV_FILE_META_ARG.

Return values

EFI_SUCCESS This function always returns success.

Converts a File System map name to a device path.

If DevPath is NULL, then ASSERT().

This function looks through the shell environment map for a map whose Name matches the Name parameter. If one is found, the device path pointer is updated to point to that file systems device path. The caller should not free the memory from that device path.

This function will use the internal lock to prevent changes to the map during the lookup operation.

Parameters

[in]	Name	The pointer to the NULL terminated UNICODE string of the file system name.
[out]	DevPath	The pointer to pointer to DevicePath. Only valid on successful return.

Return values

EFI_SUCCESS	The conversion was successful, and the device path was returned.
EFI_NOT_FOUND	The file system could not be found in the map.

typedef UINT32 ( EFIAPI * SHELLENV_GET_KEY_FILTER )

This function gets the keys to filter for for the console in.

The valid values to get are: #define EFI_OUTPUT_SCROLL 0x00000001 #define EFI_OUTPUT_PAUSE 0x00000002 #define EFI_EXECUTION_BREAK 0x00000004

Return values

The	current filter mask.

typedef UINTN ( EFIAPI * RESET_HANDLE_ENUMERATOR )

This is an internal shell function to enumerate the handle database.

This function resets the the handle database so that NEXT_HANDLE and SKIP_HANDLE will start from EnumIndex on the next call.

This must be called after INIT_HANDLE_ENUMERATOR and before CLOSE_HANDLE_ENUMERATOR.

Parameters

[in] EnumIndex Where to start.

Returns: The number of handles either read out or skipped before this reset.

This is an internal shell function to enumerate the handle database.

This function returns the number of handles in the handle database.

This must be called after INIT_HANDLE_ENUMERATOR and before CLOSE_HANDLE_ENUMERATOR.

Returns: The number of handles in the handle database.

typedef VOID ( EFIAPI * SHELLENV_DUMP_PROTOCOL_INFO )

This function is a prototype for a function that dumps information on a protocol to a given location. The location is dependant on the implementation. This is used when programatically adding shell commands.

Parameters

[in]	Handle	The handle the protocol is on.
[in]	Interface	The interface to the protocol.

Internal interface to add protocol handlers.

This function is for internal shell use only. This is how protocol handlers are added. This will get the current protocol info and add the new info or update existing info and then resave the info.

Parameters

[in]	Protocol	The pointer to the protocol's GUID.
[in]	DumpToken	The function pointer to dump token function or NULL.
[in]	DumpInfo	The function pointer to dump infomation function or NULL.
[in]	IdString	The English name of the protocol.

This is an internal shell function to free any and all allocated resources. This should be called immediately prior to closing the shell.

This function enables the page break mode.

This mode causes the output to pause after each complete screen to enable a user to more easily read it. If AutoWrap is TRUE, then rows with too many characters will be chopped and divided into 2 rows. If FALSE, then rows with too many characters may not be fully visible to the user on the screen.

Parameters

[in]	StartRow	The row number to start this on.
[in]	AutoWrap	Whether to auto wrap rows that are too long.

This function disables the page break mode.

Disabling this causes the output to print out exactly as coded, with no breaks for readability.

This function sets the keys to filter for for the console in. The valid values to set are:

#define EFI_OUTPUT_SCROLL 0x00000001 #define EFI_OUTPUT_PAUSE 0x00000002 #define EFI_EXECUTION_BREAK 0x00000004

Parameters

[in] KeyFilter The new key filter to use.

This is an internal shell function used to increment the shell nesting level.

This is an internal shell function used to decrement the shell nesting level.

Close the console proxy to restore the original console.

This is an internal shell function to handle shell cascading. It restores the original set of console protocols.

Parameters

[in]	ConInHandle	The handle of ConIn.
[in,out]	ConIn	The pointer to the location to return the pointer to the original console input.
[in]	ConOutHandle	The handle of ConOut
[in,out]	ConOut	The pointer to the location to return the pointer to the original console output.

For ease of use the shell maps handle #'s to short numbers. This is only done on request for various internal commands and the references are immediately freed when the internal command completes.

This is an internal shell function to enumerate the handle database.

This must be called after INIT_HANDLE_ENUMERATOR.

This function releases all memory and resources associated with the handle database. After this no other handle enumerator functions except INIT_HANDLE_ENUMERATOR will function properly.

This is an internal shell function to initialize the protocol enumerator.

This must be called before NEXT_PROTOCOL_INFO, SKIP_PROTOCOL_INFO, RESET_PROTOCOL_INFO_ENUMERATOR, and CLOSE_PROTOCOL_INFO_ENUMERATOR are called.

This function is an internal shell function for enumeration of protocols.

This cannot be called after CLOSE_PROTOCOL_INFO_ENUMERATOR, but it must be called after INIT_PROTOCOL_INFO_ENUMERATOR.

This function resets the list of protocols such that the next one in the list is the begining of the list.

This function is an internal shell function for enumeration of protocols.

This must be called after INIT_PROTOCOL_INFO_ENUMERATOR. After this call no protocol enumerator calls except INIT_PROTOCOL_INFO_ENUMERATOR may be made.

This function frees any memory or resources associated with the protocol enumerator.

Variable Documentation

EFI_GUID gEfiShellEnvironment2ExtGuid

EFI_GUID gEfiShellEnvironment2Guid

Data Structures

Macros

Typedefs

Functions

Variables

Detailed Description

Macro Definition Documentation

Typedef Documentation

Function Documentation

Variable Documentation