2 EFI Shell protocol as defined in the UEFI Shell 2.0 specification including errata.
4 (C) Copyright 2014 Hewlett-Packard Development Company, L.P.<BR>
5 Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
6 SPDX-License-Identifier: BSD-2-Clause-Patent
10 #ifndef __EFI_SHELL_PROTOCOL_H__
11 #define __EFI_SHELL_PROTOCOL_H__
13 #include <Guid/FileInfo.h>
15 #define EFI_SHELL_PROTOCOL_GUID \
17 0x6302d008, 0x7f9b, 0x4f30, { 0x87, 0xac, 0x60, 0xc9, 0xfe, 0xf5, 0xda, 0x4e } \
19 typedef VOID
*SHELL_FILE_HANDLE
;
23 /// The operation completed successfully.
28 /// The image failed to load.
33 /// The parameter was incorrect.
35 SHELL_INVALID_PARAMETER
= 2,
38 /// The operation is not supported.
40 SHELL_UNSUPPORTED
= 3,
43 /// The buffer was not the proper size for the request.
45 SHELL_BAD_BUFFER_SIZE
= 4,
48 /// The buffer was not large enough to hold the requested data.
49 /// The required buffer size is returned in the appropriate
50 /// parameter when this error occurs.
52 SHELL_BUFFER_TOO_SMALL
= 5,
55 /// There is no data pending upon return.
60 /// The physical device reported an error while attempting the
63 SHELL_DEVICE_ERROR
= 7,
66 /// The device cannot be written to.
68 SHELL_WRITE_PROTECTED
= 8,
71 /// The resource has run out.
73 SHELL_OUT_OF_RESOURCES
= 9,
76 /// An inconsistency was detected on the file system causing the
77 /// operation to fail.
79 SHELL_VOLUME_CORRUPTED
= 10,
82 /// There is no more space on the file system.
84 SHELL_VOLUME_FULL
= 11,
87 /// The device does not contain any medium to perform the
93 /// The medium in the device has changed since the last
96 SHELL_MEDIA_CHANGED
= 13,
99 /// The item was not found.
101 SHELL_NOT_FOUND
= 14,
104 /// Access was denied.
106 SHELL_ACCESS_DENIED
= 15,
108 // note the skipping of 16 and 17
111 /// A timeout time expired.
116 /// The protocol has not been started.
118 SHELL_NOT_STARTED
= 19,
121 /// The protocol has already been started.
123 SHELL_ALREADY_STARTED
= 20,
126 /// The operation was aborted.
130 // note the skipping of 22, 23, and 24
133 /// A function encountered an internal version that was
134 /// incompatible with a version requested by the caller.
136 SHELL_INCOMPATIBLE_VERSION
= 25,
139 /// The function was not performed due to a security violation.
141 SHELL_SECURITY_VIOLATION
= 26,
144 /// The function was performed and resulted in an unequal
150 // replaced EFI_LIST_ENTRY with LIST_ENTRY for simplicity.
151 // they are identical outside of the name.
153 LIST_ENTRY Link
; ///< Linked list members.
154 EFI_STATUS Status
; ///< Status of opening the file. Valid only if Handle != NULL.
155 CONST CHAR16
*FullName
; ///< Fully qualified filename.
156 CONST CHAR16
*FileName
; ///< name of this file.
157 SHELL_FILE_HANDLE Handle
; ///< Handle for interacting with the opened file or NULL if closed.
158 EFI_FILE_INFO
*Info
; ///< Pointer to the FileInfo struct for this file or NULL.
159 } EFI_SHELL_FILE_INFO
;
162 Returns whether any script files are currently being processed.
164 @retval TRUE There is at least one script file active.
165 @retval FALSE No script files are active now.
170 (EFIAPI
*EFI_SHELL_BATCH_IS_ACTIVE
)(
175 Closes the file handle.
177 This function closes a specified file handle. All 'dirty' cached file data is
178 flushed to the device, and the file is closed. In all cases, the handle is
181 @param[in] FileHandle The file handle to be closed.
183 @retval EFI_SUCCESS The file closed sucessfully.
187 (EFIAPI
*EFI_SHELL_CLOSE_FILE
)(
188 IN SHELL_FILE_HANDLE FileHandle
192 Creates a file or directory by name.
194 This function creates an empty new file or directory with the specified attributes and
195 returns the new file's handle. If the file already exists and is read-only, then
196 EFI_INVALID_PARAMETER will be returned.
198 If the file already existed, it is truncated and its attributes updated. If the file is
199 created successfully, the FileHandle is the file's handle, else, the FileHandle is NULL.
201 If the file name begins with >v, then the file handle which is returned refers to the
202 shell environment variable with the specified name. If the shell environment variable
203 already exists and is non-volatile then EFI_INVALID_PARAMETER is returned.
205 @param[in] FileName Pointer to NULL-terminated file path.
206 @param[in] FileAttribs The new file's attrbiutes. The different attributes are
207 described in EFI_FILE_PROTOCOL.Open().
208 @param[out] FileHandle On return, points to the created file handle or directory's handle.
210 @retval EFI_SUCCESS The file was opened. FileHandle points to the new file's handle.
211 @retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.
212 @retval EFI_UNSUPPORTED The file path could not be opened.
213 @retval EFI_NOT_FOUND The specified file could not be found on the device, or could not
214 file the file system on the device.
215 @retval EFI_NO_MEDIA The device has no medium.
216 @retval EFI_MEDIA_CHANGED The device has a different medium in it or the medium is no
218 @retval EFI_DEVICE_ERROR The device reported an error or can't get the file path according
220 @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
221 @retval EFI_WRITE_PROTECTED An attempt was made to create a file, or open a file for write
222 when the media is write-protected.
223 @retval EFI_ACCESS_DENIED The service denied access to the file.
224 @retval EFI_OUT_OF_RESOURCES Not enough resources were available to open the file.
225 @retval EFI_VOLUME_FULL The volume is full.
229 (EFIAPI
*EFI_SHELL_CREATE_FILE
)(
230 IN CONST CHAR16
*FileName
,
231 IN UINT64 FileAttribs
,
232 OUT SHELL_FILE_HANDLE
*FileHandle
236 Deletes the file specified by the file handle.
238 This function closes and deletes a file. In all cases, the file handle is closed. If the file
239 cannot be deleted, the warning code EFI_WARN_DELETE_FAILURE is returned, but the
240 handle is still closed.
242 @param[in] FileHandle The file handle to delete.
244 @retval EFI_SUCCESS The file was closed and deleted and the handle was closed.
245 @retval EFI_WARN_DELETE_FAILURE The handle was closed but the file was not deleted.
249 (EFIAPI
*EFI_SHELL_DELETE_FILE
)(
250 IN SHELL_FILE_HANDLE FileHandle
254 Deletes the file specified by the file name.
256 This function deletes a file.
258 @param[in] FileName Points to the NULL-terminated file name.
260 @retval EFI_SUCCESS The file was deleted.
261 @retval EFI_WARN_DELETE_FAILURE The handle was closed but the file was not deleted.
265 (EFIAPI
*EFI_SHELL_DELETE_FILE_BY_NAME
)(
266 IN CONST CHAR16
*FileName
270 Disables the page break output mode.
274 (EFIAPI
*EFI_SHELL_DISABLE_PAGE_BREAK
)(
279 Enables the page break output mode.
283 (EFIAPI
*EFI_SHELL_ENABLE_PAGE_BREAK
)(
288 Execute the command line.
290 This function creates a nested instance of the shell and executes the specified
291 command (CommandLine) with the specified environment (Environment). Upon return,
292 the status code returned by the specified command is placed in StatusCode.
294 If Environment is NULL, then the current environment is used and all changes made
295 by the commands executed will be reflected in the current environment. If the
296 Environment is non-NULL, then the changes made will be discarded.
298 The CommandLine is executed from the current working directory on the current
301 @param[in] ParentImageHandle A handle of the image that is executing the specified
303 @param[in] CommandLine Points to the NULL-terminated UCS-2 encoded string
304 containing the command line. If NULL then the command-
306 @param[in] Environment Points to a NULL-terminated array of environment
307 variables with the format 'x=y', where x is the
308 environment variable name and y is the value. If this
309 is NULL, then the current shell environment is used.
310 @param[out] ErrorCode Points to the status code returned by the command.
312 @retval EFI_SUCCESS The command executed successfully. The status code
313 returned by the command is pointed to by StatusCode.
314 @retval EFI_INVALID_PARAMETER The parameters are invalid.
315 @retval EFI_OUT_OF_RESOURCES Out of resources.
316 @retval EFI_UNSUPPORTED Nested shell invocations are not allowed.
320 (EFIAPI
*EFI_SHELL_EXECUTE
)(
321 IN EFI_HANDLE
*ParentImageHandle
,
322 IN CHAR16
*CommandLine OPTIONAL
,
323 IN CHAR16
**Environment OPTIONAL
,
324 OUT EFI_STATUS
*StatusCode OPTIONAL
328 Find files that match a specified pattern.
330 This function searches for all files and directories that match the specified
331 FilePattern. The FilePattern can contain wild-card characters. The resulting file
332 information is placed in the file list FileList.
334 The files in the file list are not opened. The OpenMode field is set to 0 and the FileInfo
335 field is set to NULL.
337 @param[in] FilePattern Points to a NULL-terminated shell file path, including wildcards.
338 @param[out] FileList On return, points to the start of a file list containing the names
339 of all matching files or else points to NULL if no matching files
342 @retval EFI_SUCCESS Files found.
343 @retval EFI_NOT_FOUND No files found.
344 @retval EFI_NO_MEDIA The device has no media.
345 @retval EFI_DEVICE_ERROR The device reported an error.
346 @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
350 (EFIAPI
*EFI_SHELL_FIND_FILES
)(
351 IN CONST CHAR16
*FilePattern
,
352 OUT EFI_SHELL_FILE_INFO
**FileList
356 Find all files in a specified directory.
358 @param[in] FileDirHandle Handle of the directory to search.
359 @param[out] FileList On return, points to the list of files in the directory
360 or NULL if there are no files in the directory.
362 @retval EFI_SUCCESS File information was returned successfully.
363 @retval EFI_VOLUME_CORRUPTED The file system structures have been corrupted.
364 @retval EFI_DEVICE_ERROR The device reported an error.
365 @retval EFI_NO_MEDIA The device media is not present.
369 (EFIAPI
*EFI_SHELL_FIND_FILES_IN_DIR
)(
370 IN SHELL_FILE_HANDLE FileDirHandle
,
371 OUT EFI_SHELL_FILE_INFO
**FileList
375 Flushes data back to a device.
377 This function flushes all modified data associated with a file to a device.
379 @param[in] FileHandle The handle of the file to flush.
381 @retval EFI_SUCCESS The data was flushed.
382 @retval EFI_NO_MEDIA The device has no medium.
383 @retval EFI_DEVICE_ERROR The device reported an error.
384 @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
385 @retval EFI_WRITE_PROTECTED The file or medium is write-protected.
386 @retval EFI_ACCESS_DENIED The file was opened read-only.
387 @retval EFI_VOLUME_FULL The volume is full.
391 (EFIAPI
*EFI_SHELL_FLUSH_FILE
)(
392 IN SHELL_FILE_HANDLE FileHandle
398 This function cleans up the file list and any related data structures. It has no
399 impact on the files themselves.
401 @param[in] FileList The file list to free. Type EFI_SHELL_FILE_INFO is
402 defined in OpenFileList().
404 @retval EFI_SUCCESS Free the file list successfully.
408 (EFIAPI
*EFI_SHELL_FREE_FILE_LIST
)(
409 IN EFI_SHELL_FILE_INFO
**FileList
413 Returns the current directory on the specified device.
415 If FileSystemMapping is NULL, it returns the current working directory. If the
416 FileSystemMapping is not NULL, it returns the current directory associated with the
417 FileSystemMapping. In both cases, the returned name includes the file system
418 mapping (i.e. fs0:\current-dir).
420 Note that the current directory string should exclude the tailing backslash character.
422 @param[in] FileSystemMapping A pointer to the file system mapping. If NULL,
423 then the current working directory is returned.
425 @retval !=NULL The current directory.
426 @retval NULL Current directory does not exist.
430 (EFIAPI
*EFI_SHELL_GET_CUR_DIR
)(
431 IN CONST CHAR16
*FileSystemMapping OPTIONAL
434 typedef UINT32 EFI_SHELL_DEVICE_NAME_FLAGS
;
435 #define EFI_DEVICE_NAME_USE_COMPONENT_NAME 0x00000001
436 #define EFI_DEVICE_NAME_USE_DEVICE_PATH 0x00000002
439 Gets the name of the device specified by the device handle.
441 This function gets the user-readable name of the device specified by the device
442 handle. If no user-readable name could be generated, then *BestDeviceName will be
443 NULL and EFI_NOT_FOUND will be returned.
445 If EFI_DEVICE_NAME_USE_COMPONENT_NAME is set, then the function will return the
446 device's name using the EFI_COMPONENT_NAME2_PROTOCOL, if present on
449 If EFI_DEVICE_NAME_USE_DEVICE_PATH is set, then the function will return the
450 device's name using the EFI_DEVICE_PATH_PROTOCOL, if present on DeviceHandle.
451 If both EFI_DEVICE_NAME_USE_COMPONENT_NAME and
452 EFI_DEVICE_NAME_USE_DEVICE_PATH are set, then
453 EFI_DEVICE_NAME_USE_COMPONENT_NAME will have higher priority.
455 @param[in] DeviceHandle The handle of the device.
456 @param[in] Flags Determines the possible sources of component names.
457 @param[in] Language A pointer to the language specified for the device
458 name, in the same format as described in the UEFI
459 specification, Appendix M.
460 @param[out] BestDeviceName On return, points to the callee-allocated NULL-
461 terminated name of the device. If no device name
462 could be found, points to NULL. The name must be
463 freed by the caller...
465 @retval EFI_SUCCESS Get the name successfully.
466 @retval EFI_NOT_FOUND Fail to get the device name.
470 (EFIAPI
*EFI_SHELL_GET_DEVICE_NAME
)(
471 IN EFI_HANDLE DeviceHandle
,
472 IN EFI_SHELL_DEVICE_NAME_FLAGS Flags
,
474 OUT CHAR16
**BestDeviceName
478 Gets the device path from the mapping.
480 This function gets the device path associated with a mapping.
482 @param[in] Mapping A pointer to the mapping
484 @retval !=NULL Pointer to the device path that corresponds to the
485 device mapping. The returned pointer does not need
487 @retval NULL There is no device path associated with the
491 CONST EFI_DEVICE_PATH_PROTOCOL
*
492 (EFIAPI
*EFI_SHELL_GET_DEVICE_PATH_FROM_MAP
)(
493 IN CONST CHAR16
*Mapping
497 Converts a file system style name to a device path.
499 This function converts a file system style name to a device path, by replacing any
500 mapping references to the associated device path.
502 @param[in] Path The pointer to the path.
504 @return The pointer of the file path. The file path is callee
505 allocated and should be freed by the caller.
508 EFI_DEVICE_PATH_PROTOCOL
*
509 (EFIAPI
*EFI_SHELL_GET_DEVICE_PATH_FROM_FILE_PATH
)(
510 IN CONST CHAR16
*Path
514 Gets either a single or list of environment variables.
516 If name is not NULL then this function returns the current value of the specified
517 environment variable.
519 If Name is NULL than a list of all environment variable names is returned. Each a
520 NULL terminated string with a double NULL terminating the list.
522 @param[in] Name A pointer to the environment variable name. If
523 Name is NULL, then the function will return all
524 of the defined shell environment variables. In
525 the case where multiple environment variables are
526 being returned, each variable will be terminated by
527 a NULL, and the list will be terminated by a double
530 @return A pointer to the returned string.
531 The returned pointer does not need to be freed by the caller.
533 @retval NULL The environment variable doesn't exist or there are
534 no environment variables.
538 (EFIAPI
*EFI_SHELL_GET_ENV
)(
539 IN CONST CHAR16
*Name OPTIONAL
543 Gets the environment variable and Attributes, or list of environment variables. Can be
544 used instead of GetEnv().
546 This function returns the current value of the specified environment variable and
547 the Attributes. If no variable name was specified, then all of the known
548 variables will be returned.
550 @param[in] Name A pointer to the environment variable name. If Name is NULL,
551 then the function will return all of the defined shell
552 environment variables. In the case where multiple environment
553 variables are being returned, each variable will be terminated
554 by a NULL, and the list will be terminated by a double NULL.
555 @param[out] Attributes If not NULL, a pointer to the returned attributes bitmask for
556 the environment variable. In the case where Name is NULL, and
557 multiple environment variables are being returned, Attributes
560 @retval NULL The environment variable doesn't exist.
561 @return The environment variable's value. The returned pointer does not
562 need to be freed by the caller.
566 (EFIAPI
*EFI_SHELL_GET_ENV_EX
)(
567 IN CONST CHAR16
*Name
,
568 OUT UINT32
*Attributes OPTIONAL
572 Gets the file information from an open file handle.
574 This function allocates a buffer to store the file's information. It's the caller's
575 responsibility to free the buffer.
577 @param[in] FileHandle A File Handle.
579 @retval NULL Cannot get the file info.
580 @return A pointer to a buffer with file information.
584 (EFIAPI
*EFI_SHELL_GET_FILE_INFO
)(
585 IN SHELL_FILE_HANDLE FileHandle
589 Converts a device path to a file system-style path.
591 This function converts a device path to a file system path by replacing part, or all, of
592 the device path with the file-system mapping. If there are more than one application
593 file system mappings, the one that most closely matches Path will be used.
595 @param[in] Path The pointer to the device path.
597 @return The pointer of the NULL-terminated file path. The path
598 is callee-allocated and should be freed by the caller.
602 (EFIAPI
*EFI_SHELL_GET_FILE_PATH_FROM_DEVICE_PATH
)(
603 IN CONST EFI_DEVICE_PATH_PROTOCOL
*Path
607 Gets a file's current position.
609 This function returns the current file position for the file handle. For directories, the
610 current file position has no meaning outside of the file system driver and as such, the
611 operation is not supported.
613 @param[in] FileHandle The file handle on which to get the current position.
614 @param[out] Position Byte position from the start of the file.
616 @retval EFI_SUCCESS Data was accessed.
617 @retval EFI_UNSUPPORTED The request is not valid on open directories.
621 (EFIAPI
*EFI_SHELL_GET_FILE_POSITION
)(
622 IN SHELL_FILE_HANDLE FileHandle
,
627 Gets the size of a file.
629 This function returns the size of the file specified by FileHandle.
631 @param[in] FileHandle The handle of the file.
632 @param[out] Size The size of this file.
634 @retval EFI_SUCCESS Get the file's size.
635 @retval EFI_DEVICE_ERROR Can't access the file.
639 (EFIAPI
*EFI_SHELL_GET_FILE_SIZE
)(
640 IN SHELL_FILE_HANDLE FileHandle
,
645 Get the GUID value from a human readable name.
647 If GuidName is a known GUID name, then update Guid to have the correct value for
650 This function is only available when the major and minor versions in the
651 EfiShellProtocol are greater than or equal to 2 and 1, respectively.
653 @param[in] GuidName A pointer to the localized name for the GUID being queried.
654 @param[out] Guid A pointer to the GUID structure to be filled in.
656 @retval EFI_SUCCESS The operation was successful.
657 @retval EFI_INVALID_PARAMETER Guid was NULL.
658 @retval EFI_INVALID_PARAMETER GuidName was NULL.
659 @retval EFI_NOT_FOUND GuidName is not a known GUID Name.
663 (EFIAPI
*EFI_SHELL_GET_GUID_FROM_NAME
)(
664 IN CONST CHAR16
*GuidName
,
669 Get the human readable name for a GUID from the value.
671 If Guid is assigned a name, then update *GuidName to point to the name. The callee
672 should not modify the value.
674 This function is only available when the major and minor versions in the
675 EfiShellProtocol are greater than or equal to 2 and 1, respectively.
677 @param[in] Guid A pointer to the GUID being queried.
678 @param[out] GuidName A pointer to a pointer the localized to name for the GUID being requested
680 @retval EFI_SUCCESS The operation was successful.
681 @retval EFI_INVALID_PARAMETER Guid was NULL.
682 @retval EFI_INVALID_PARAMETER GuidName was NULL.
683 @retval EFI_NOT_FOUND Guid is not assigned a name.
687 (EFIAPI
*EFI_SHELL_GET_GUID_NAME
)(
688 IN CONST EFI_GUID
*Guid
,
689 OUT CONST CHAR16
**GuidName
693 Return help information about a specific command.
695 This function returns the help information for the specified command. The help text
696 can be internal to the shell or can be from a UEFI Shell manual page.
698 If Sections is specified, then each section name listed will be compared in a casesensitive
699 manner, to the section names described in Appendix B. If the section exists,
700 it will be appended to the returned help text. If the section does not exist, no
701 information will be returned. If Sections is NULL, then all help text information
702 available will be returned.
704 @param[in] Command Points to the NULL-terminated UEFI Shell command name.
705 @param[in] Sections Points to the NULL-terminated comma-delimited
706 section names to return. If NULL, then all
707 sections will be returned.
708 @param[out] HelpText On return, points to a callee-allocated buffer
709 containing all specified help text.
711 @retval EFI_SUCCESS The help text was returned.
712 @retval EFI_OUT_OF_RESOURCES The necessary buffer could not be allocated to hold the
714 @retval EFI_INVALID_PARAMETER HelpText is NULL.
715 @retval EFI_NOT_FOUND There is no help text available for Command.
719 (EFIAPI
*EFI_SHELL_GET_HELP_TEXT
)(
720 IN CONST CHAR16
*Command
,
721 IN CONST CHAR16
*Sections OPTIONAL
,
722 OUT CHAR16
**HelpText
726 Gets the mapping(s) that most closely matches the device path.
728 This function gets the mapping which corresponds to the device path *DevicePath. If
729 there is no exact match, then the mapping which most closely matches *DevicePath
730 is returned, and *DevicePath is updated to point to the remaining portion of the
731 device path. If there is an exact match, the mapping is returned and *DevicePath
732 points to the end-of-device-path node.
734 If there are multiple map names they will be semi-colon seperated in the
735 NULL-terminated string.
737 @param[in, out] DevicePath On entry, points to a device path pointer. On
738 exit, updates the pointer to point to the
739 portion of the device path after the mapping.
741 @retval NULL No mapping was found.
742 @retval !=NULL Pointer to NULL-terminated mapping. The buffer
743 is callee allocated and should be freed by the caller.
747 (EFIAPI
*EFI_SHELL_GET_MAP_FROM_DEVICE_PATH
)(
748 IN OUT EFI_DEVICE_PATH_PROTOCOL
**DevicePath
752 Gets the enable status of the page break output mode.
754 User can use this function to determine current page break mode.
756 @retval TRUE The page break output mode is enabled.
757 @retval FALSE The page break output mode is disabled.
761 (EFIAPI
*EFI_SHELL_GET_PAGE_BREAK
)(
766 Judges whether the active shell is the root shell.
768 This function makes the user to know that whether the active Shell is the root shell.
770 @retval TRUE The active Shell is the root Shell.
771 @retval FALSE The active Shell is NOT the root Shell.
775 (EFIAPI
*EFI_SHELL_IS_ROOT_SHELL
)(
780 Opens a file or a directory by file name.
782 This function opens the specified file in the specified OpenMode and returns a file
784 If the file name begins with '>v', then the file handle which is returned refers to the
785 shell environment variable with the specified name. If the shell environment variable
786 exists, is non-volatile and the OpenMode indicates EFI_FILE_MODE_WRITE, then
787 EFI_INVALID_PARAMETER is returned.
789 If the file name is '>i', then the file handle which is returned refers to the standard
790 input. If the OpenMode indicates EFI_FILE_MODE_WRITE, then EFI_INVALID_PARAMETER
793 If the file name is '>o', then the file handle which is returned refers to the standard
794 output. If the OpenMode indicates EFI_FILE_MODE_READ, then EFI_INVALID_PARAMETER
797 If the file name is '>e', then the file handle which is returned refers to the standard
798 error. If the OpenMode indicates EFI_FILE_MODE_READ, then EFI_INVALID_PARAMETER
801 If the file name is 'NUL', then the file handle that is returned refers to the standard NUL
802 file. If the OpenMode indicates EFI_FILE_MODE_READ, then EFI_INVALID_PARAMETER is
805 If return EFI_SUCCESS, the FileHandle is the opened file's handle, else, the
808 @param[in] FileName Points to the NULL-terminated UCS-2 encoded file name.
809 @param[out] FileHandle On return, points to the file handle.
810 @param[in] OpenMode File open mode. Either EFI_FILE_MODE_READ or
811 EFI_FILE_MODE_WRITE from section 12.4 of the UEFI
813 @retval EFI_SUCCESS The file was opened. FileHandle has the opened file's handle.
814 @retval EFI_INVALID_PARAMETER One of the parameters has an invalid value. FileHandle is NULL.
815 @retval EFI_UNSUPPORTED Could not open the file path. FileHandle is NULL.
816 @retval EFI_NOT_FOUND The specified file could not be found on the device or the file
817 system could not be found on the device. FileHandle is NULL.
818 @retval EFI_NO_MEDIA The device has no medium. FileHandle is NULL.
819 @retval EFI_MEDIA_CHANGED The device has a different medium in it or the medium is no
820 longer supported. FileHandle is NULL.
821 @retval EFI_DEVICE_ERROR The device reported an error or can't get the file path according
822 the FileName. FileHandle is NULL.
823 @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted. FileHandle is NULL.
824 @retval EFI_WRITE_PROTECTED An attempt was made to create a file, or open a file for write
825 when the media is write-protected. FileHandle is NULL.
826 @retval EFI_ACCESS_DENIED The service denied access to the file. FileHandle is NULL.
827 @retval EFI_OUT_OF_RESOURCES Not enough resources were available to open the file. FileHandle
829 @retval EFI_VOLUME_FULL The volume is full. FileHandle is NULL.
833 (EFIAPI
*EFI_SHELL_OPEN_FILE_BY_NAME
)(
834 IN CONST CHAR16
*FileName
,
835 OUT SHELL_FILE_HANDLE
*FileHandle
,
840 Opens the files that match the path specified.
842 This function opens all of the files specified by Path. Wildcards are processed
843 according to the rules specified in UEFI Shell 2.0 spec section 3.7.1. Each
844 matching file has an EFI_SHELL_FILE_INFO structure created in a linked list.
846 @param[in] Path A pointer to the path string.
847 @param[in] OpenMode Specifies the mode used to open each file, EFI_FILE_MODE_READ or
849 @param[in, out] FileList Points to the start of a list of files opened.
851 @retval EFI_SUCCESS Create the file list successfully.
852 @return Can't create the file list.
856 (EFIAPI
*EFI_SHELL_OPEN_FILE_LIST
)(
859 IN OUT EFI_SHELL_FILE_INFO
**FileList
863 Opens the root directory of a device.
865 This function opens the root directory of a device and returns a file handle to it.
867 @param[in] DevicePath Points to the device path corresponding to the device where the
868 EFI_SIMPLE_FILE_SYSTEM_PROTOCOL is installed.
869 @param[out] FileHandle On exit, points to the file handle corresponding to the root directory on the
872 @retval EFI_SUCCESS Root opened successfully.
873 @retval EFI_NOT_FOUND EFI_SIMPLE_FILE_SYSTEM could not be found or the root directory
875 @retval EFI_VOLUME_CORRUPTED The data structures in the volume were corrupted.
876 @retval EFI_DEVICE_ERROR The device had an error.
880 (EFIAPI
*EFI_SHELL_OPEN_ROOT
)(
881 IN EFI_DEVICE_PATH_PROTOCOL
*DevicePath
,
882 OUT SHELL_FILE_HANDLE
*FileHandle
886 Opens the root directory of a device on a handle.
888 This function opens the root directory of a device and returns a file handle to it.
890 @param[in] DeviceHandle The handle of the device that contains the volume.
891 @param[out] FileHandle On exit, points to the file handle corresponding to the root directory on the
894 @retval EFI_SUCCESS Root opened successfully.
895 @retval EFI_NOT_FOUND EFI_SIMPLE_FILE_SYSTEM could not be found or the root directory
897 @retval EFI_VOLUME_CORRUPTED The data structures in the volume were corrupted.
898 @retval EFI_DEVICE_ERROR The device had an error.
902 (EFIAPI
*EFI_SHELL_OPEN_ROOT_BY_HANDLE
)(
903 IN EFI_HANDLE DeviceHandle
,
904 OUT SHELL_FILE_HANDLE
*FileHandle
908 Reads data from the file.
910 If FileHandle is not a directory, the function reads the requested number of bytes
911 from the file at the file's current position and returns them in Buffer. If the read goes
912 beyond the end of the file, the read length is truncated to the end of the file. The file's
913 current position is increased by the number of bytes returned.
914 If FileHandle is a directory, then an error is returned.
916 @param[in] FileHandle The opened file handle for read.
917 @param[in] ReadSize On input, the size of Buffer, in bytes. On output, the amount of data read.
918 @param[in, out] Buffer The buffer in which data is read.
920 @retval EFI_SUCCESS Data was read.
921 @retval EFI_NO_MEDIA The device has no media.
922 @retval EFI_DEVICE_ERROR The device reported an error.
923 @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
924 @retval EFI_BUFFER_TO_SMALL Buffer is too small. ReadSize contains required size.
928 (EFIAPI
*EFI_SHELL_READ_FILE
)(
929 IN SHELL_FILE_HANDLE FileHandle
,
930 IN OUT UINTN
*ReadSize
,
935 Register a GUID and a localized human readable name for it.
937 If Guid is not assigned a name, then assign GuidName to Guid. This list of GUID
938 names must be used whenever a shell command outputs GUID information.
940 This function is only available when the major and minor versions in the
941 EfiShellProtocol are greater than or equal to 2 and 1, respectively.
943 @param[in] Guid A pointer to the GUID being registered.
944 @param[in] GuidName A pointer to the localized name for the GUID being registered.
946 @retval EFI_SUCCESS The operation was successful.
947 @retval EFI_INVALID_PARAMETER Guid was NULL.
948 @retval EFI_INVALID_PARAMETER GuidName was NULL.
949 @retval EFI_ACCESS_DENIED Guid already is assigned a name.
953 (EFIAPI
*EFI_SHELL_REGISTER_GUID_NAME
)(
954 IN CONST EFI_GUID
*Guid
,
955 IN CONST CHAR16
*GuidName
959 Deletes the duplicate file names files in the given file list.
961 @param[in] FileList A pointer to the first entry in the file list.
963 @retval EFI_SUCCESS Always success.
967 (EFIAPI
*EFI_SHELL_REMOVE_DUP_IN_FILE_LIST
)(
968 IN EFI_SHELL_FILE_INFO
**FileList
972 Changes a shell command alias.
974 This function creates an alias for a shell command.
976 @param[in] Command Points to the NULL-terminated shell command or existing alias.
977 @param[in] Alias Points to the NULL-terminated alias for the shell command. If this is NULL, and
978 Command refers to an alias, that alias will be deleted.
979 @param[in] Replace If TRUE and the alias already exists, then the existing alias will be replaced. If
980 FALSE and the alias already exists, then the existing alias is unchanged and
981 EFI_ACCESS_DENIED is returned.
982 @param[in] Volatile if TRUE the Alias being set will be stored in a volatile fashion. if FALSE the
983 Alias being set will be stored in a non-volatile fashion.
985 @retval EFI_SUCCESS Alias created or deleted successfully.
986 @retval EFI_ACCESS_DENIED The alias is a built-in alias or already existed and Replace was set to
991 (EFIAPI
*EFI_SHELL_SET_ALIAS
)(
992 IN CONST CHAR16
*Command
,
993 IN CONST CHAR16
*Alias
,
999 This function returns the command associated with a alias or a list of all
1002 @param[in] Alias Points to the NULL-terminated shell alias.
1003 If this parameter is NULL, then all
1004 aliases will be returned in ReturnedData.
1005 @param[out] Volatile Upon return of a single command if TRUE indicates
1006 this is stored in a volatile fashion. FALSE otherwise.
1007 @return If Alias is not NULL, it will return a pointer to
1008 the NULL-terminated command for that alias.
1009 If Alias is NULL, ReturnedData points to a ';'
1010 delimited list of alias (e.g.
1011 ReturnedData = "dir;del;copy;mfp") that is NULL-terminated.
1012 @retval NULL An error ocurred.
1013 @retval NULL Alias was not a valid Alias.
1017 (EFIAPI
*EFI_SHELL_GET_ALIAS
)(
1018 IN CONST CHAR16
*Alias
,
1019 OUT BOOLEAN
*Volatile OPTIONAL
1023 Changes the current directory on the specified device.
1025 If the FileSystem is NULL, and the directory Dir does not contain a file system's
1026 mapped name, this function changes the current working directory. If FileSystem is
1027 NULL and the directory Dir contains a mapped name, then the current file system and
1028 the current directory on that file system are changed.
1030 If FileSystem is not NULL, and Dir is NULL, then this changes the current working file
1033 If FileSystem is not NULL and Dir is not NULL, then this function changes the current
1034 directory on the specified file system.
1036 If the current working directory or the current working file system is changed then the
1037 %cwd% environment variable will be updated.
1039 @param[in] FileSystem A pointer to the file system's mapped name. If NULL, then the current working
1040 directory is changed.
1041 @param[in] Dir Points to the NULL-terminated directory on the device specified by FileSystem.
1043 @retval NULL Current directory does not exist.
1044 @return The current directory.
1048 (EFIAPI
*EFI_SHELL_SET_CUR_DIR
)(
1049 IN CONST CHAR16
*FileSystem OPTIONAL
,
1050 IN CONST CHAR16
*Dir
1054 Sets the environment variable.
1056 This function changes the current value of the specified environment variable. If the
1057 environment variable exists and the Value is an empty string, then the environment
1058 variable is deleted. If the environment variable exists and the Value is not an empty
1059 string, then the value of the environment variable is changed. If the environment
1060 variable does not exist and the Value is an empty string, there is no action. If the
1061 environment variable does not exist and the Value is a non-empty string, then the
1062 environment variable is created and assigned the specified value.
1064 For a description of volatile and non-volatile environment variables, see UEFI Shell
1065 2.0 specification section 3.6.1.
1067 @param[in] Name Points to the NULL-terminated environment variable name.
1068 @param[in] Value Points to the NULL-terminated environment variable value. If the value is an
1069 empty string then the environment variable is deleted.
1070 @param[in] Volatile Indicates whether the variable is non-volatile (FALSE) or volatile (TRUE).
1072 @retval EFI_SUCCESS The environment variable was successfully updated.
1076 (EFIAPI
*EFI_SHELL_SET_ENV
)(
1077 IN CONST CHAR16
*Name
,
1078 IN CONST CHAR16
*Value
,
1083 Sets the file information to an opened file handle.
1085 This function changes file information. All file information in the EFI_FILE_INFO
1086 struct will be updated to the passed in data.
1088 @param[in] FileHandle A file handle.
1089 @param[in] FileInfo Points to new file information.
1091 @retval EFI_SUCCESS The information was set.
1092 @retval EFI_NO_MEDIA The device has no medium.
1093 @retval EFI_DEVICE_ERROR The device reported an error.
1094 @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
1095 @retval EFI_WRITE_PROTECTED The file or medium is write-protected.
1096 @retval EFI_ACCESS_DENIED The file was opened read-only.
1097 @retval EFI_VOLUME_FULL The volume is full.
1098 @retval EFI_BAD_BUFFER_SIZE BufferSize is smaller than the size of EFI_FILE_INFO.
1102 (EFIAPI
*EFI_SHELL_SET_FILE_INFO
)(
1103 IN SHELL_FILE_HANDLE FileHandle
,
1104 IN CONST EFI_FILE_INFO
*FileInfo
1108 Sets a file's current position.
1110 This function sets the current file position for the handle to the position supplied. With
1111 the exception of seeking to position 0xFFFFFFFFFFFFFFFF, only absolute positioning is
1112 supported, and seeking past the end of the file is allowed (a subsequent write would
1113 grow the file). Seeking to position 0xFFFFFFFFFFFFFFFF causes the current position
1114 to be set to the end of the file.
1116 @param[in] FileHandle The file handle on which requested position will be set.
1117 @param[in] Position Byte position from the start of the file.
1119 @retval EFI_SUCCESS Data was written.
1120 @retval EFI_UNSUPPORTED The seek request for nonzero is not valid on open directories.
1124 (EFIAPI
*EFI_SHELL_SET_FILE_POSITION
)(
1125 IN SHELL_FILE_HANDLE FileHandle
,
1130 This function creates a mapping for a device path.
1132 @param[in] DevicePath Points to the device path. If this is NULL and Mapping points to a valid mapping,
1133 then the mapping will be deleted.
1134 @param[in] Mapping Points to the NULL-terminated mapping for the device path.
1136 @retval EFI_SUCCESS Mapping created or deleted successfully.
1137 @retval EFI_NO_MAPPING There is no handle that corresponds exactly to DevicePath. See the
1138 boot service function LocateDevicePath().
1139 @retval EFI_ACCESS_DENIED The mapping is a built-in alias.
1143 (EFIAPI
*EFI_SHELL_SET_MAP
)(
1144 IN CONST EFI_DEVICE_PATH_PROTOCOL
*DevicePath
,
1145 IN CONST CHAR16
*Mapping
1149 Writes data to the file.
1151 This function writes the specified number of bytes to the file at the current file position.
1152 The current file position is advanced the actual number of bytes written, which is
1153 returned in BufferSize. Partial writes only occur when there has been a data error
1154 during the write attempt (such as "volume space full"). The file automatically grows to
1155 hold the data, if required.
1157 Direct writes to opened directories are not supported.
1159 @param[in] FileHandle The opened file handle for writing.
1160 @param[in, out] BufferSize On input, size of Buffer.
1161 @param[in] Buffer The buffer in which data to write.
1163 @retval EFI_SUCCESS Data was written.
1164 @retval EFI_UNSUPPORTED Writes to open directory are not supported.
1165 @retval EFI_NO_MEDIA The device has no media.
1166 @retval EFI_DEVICE_ERROR The device reported an error.
1167 @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.
1168 @retval EFI_WRITE_PROTECTED The device is write-protected.
1169 @retval EFI_ACCESS_DENIED The file was open for read only.
1170 @retval EFI_VOLUME_FULL The volume is full.
1174 (EFIAPI
*EFI_SHELL_WRITE_FILE
)(
1175 IN SHELL_FILE_HANDLE FileHandle
,
1176 IN OUT UINTN
*BufferSize
,
1181 // EFI_SHELL_PROTOCOL has been updated since UEFI Shell Spec 2.0
1182 // Usage of this protocol will require version checking before attempting
1183 // to use any new members. There is no need to check the version for
1184 // members that existed in UEFI Shell Spec 2.0.
1186 // Update below for any future UEFI Shell spec changes to this protocol.
1188 // Check EFI_SHELL_PROTOCOL MajorVersion and MinorVersion:
1189 // if ((2 == gEfiShellProtocol->MajorVersion) &&
1190 // (0 == gEfiShellProtocol->MinorVersion)) {
1193 // // RegisterGuidName - UEFI Shell 2.1
1194 // // GetGuidName - UEFI Shell 2.1
1195 // // GetGuidFromName - UEFI Shell 2.1
1196 // // GetEnvEx - UEFI Shell 2.1
1200 // // Can use all members
1204 typedef struct _EFI_SHELL_PROTOCOL
{
1205 EFI_SHELL_EXECUTE Execute
;
1206 EFI_SHELL_GET_ENV GetEnv
;
1207 EFI_SHELL_SET_ENV SetEnv
;
1208 EFI_SHELL_GET_ALIAS GetAlias
;
1209 EFI_SHELL_SET_ALIAS SetAlias
;
1210 EFI_SHELL_GET_HELP_TEXT GetHelpText
;
1211 EFI_SHELL_GET_DEVICE_PATH_FROM_MAP GetDevicePathFromMap
;
1212 EFI_SHELL_GET_MAP_FROM_DEVICE_PATH GetMapFromDevicePath
;
1213 EFI_SHELL_GET_DEVICE_PATH_FROM_FILE_PATH GetDevicePathFromFilePath
;
1214 EFI_SHELL_GET_FILE_PATH_FROM_DEVICE_PATH GetFilePathFromDevicePath
;
1215 EFI_SHELL_SET_MAP SetMap
;
1216 EFI_SHELL_GET_CUR_DIR GetCurDir
;
1217 EFI_SHELL_SET_CUR_DIR SetCurDir
;
1218 EFI_SHELL_OPEN_FILE_LIST OpenFileList
;
1219 EFI_SHELL_FREE_FILE_LIST FreeFileList
;
1220 EFI_SHELL_REMOVE_DUP_IN_FILE_LIST RemoveDupInFileList
;
1221 EFI_SHELL_BATCH_IS_ACTIVE BatchIsActive
;
1222 EFI_SHELL_IS_ROOT_SHELL IsRootShell
;
1223 EFI_SHELL_ENABLE_PAGE_BREAK EnablePageBreak
;
1224 EFI_SHELL_DISABLE_PAGE_BREAK DisablePageBreak
;
1225 EFI_SHELL_GET_PAGE_BREAK GetPageBreak
;
1226 EFI_SHELL_GET_DEVICE_NAME GetDeviceName
;
1227 EFI_SHELL_GET_FILE_INFO GetFileInfo
;
1228 EFI_SHELL_SET_FILE_INFO SetFileInfo
;
1229 EFI_SHELL_OPEN_FILE_BY_NAME OpenFileByName
;
1230 EFI_SHELL_CLOSE_FILE CloseFile
;
1231 EFI_SHELL_CREATE_FILE CreateFile
;
1232 EFI_SHELL_READ_FILE ReadFile
;
1233 EFI_SHELL_WRITE_FILE WriteFile
;
1234 EFI_SHELL_DELETE_FILE DeleteFile
;
1235 EFI_SHELL_DELETE_FILE_BY_NAME DeleteFileByName
;
1236 EFI_SHELL_GET_FILE_POSITION GetFilePosition
;
1237 EFI_SHELL_SET_FILE_POSITION SetFilePosition
;
1238 EFI_SHELL_FLUSH_FILE FlushFile
;
1239 EFI_SHELL_FIND_FILES FindFiles
;
1240 EFI_SHELL_FIND_FILES_IN_DIR FindFilesInDir
;
1241 EFI_SHELL_GET_FILE_SIZE GetFileSize
;
1242 EFI_SHELL_OPEN_ROOT OpenRoot
;
1243 EFI_SHELL_OPEN_ROOT_BY_HANDLE OpenRootByHandle
;
1244 EFI_EVENT ExecutionBreak
;
1245 UINT32 MajorVersion
;
1246 UINT32 MinorVersion
;
1247 // Added for Shell 2.1
1248 EFI_SHELL_REGISTER_GUID_NAME RegisterGuidName
;
1249 EFI_SHELL_GET_GUID_NAME GetGuidName
;
1250 EFI_SHELL_GET_GUID_FROM_NAME GetGuidFromName
;
1251 EFI_SHELL_GET_ENV_EX GetEnvEx
;
1252 } EFI_SHELL_PROTOCOL
;
1254 extern EFI_GUID gEfiShellProtocolGuid
;
1257 SHELL_MAJOR_VERSION
= 2,
1258 SHELL_MINOR_VERSION
= 2