This adds the new APIs for UEFI Shell 2.1 and makes a new structure for shell impleme...

[mirror_edk2.git] / ShellPkg / Include / Protocol / EfiShell.h

/** @file\r
  EFI Shell protocol as defined in the UEFI Shell 2.0 specification including errata.\r
\r
  Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>\r
  This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
#ifndef __EFI_SHELL_PROTOCOL__\r
#define __EFI_SHELL_PROTOCOL__\r
\r
#include <ShellBase.h>\r
#include <Guid/FileInfo.h>\r
\r
#define EFI_SHELL_PROTOCOL_GUID \\r
  { \\r
  0x6302d008, 0x7f9b, 0x4f30, { 0x87, 0xac, 0x60, 0xc9, 0xfe, 0xf5, 0xda, 0x4e } \\r
  }\r
\r
// replaced EFI_LIST_ENTRY with LIST_ENTRY for simplicity.\r
// they are identical outside of the name.\r
typedef struct {\r
  LIST_ENTRY        Link;       ///< Linked list members.\r
  EFI_STATUS        Status;     ///< Status of opening the file.  Valid only if Handle != NULL.\r
  CONST CHAR16      *FullName;  ///< Fully qualified filename.\r
  CONST CHAR16      *FileName;  ///< name of this file.\r
  SHELL_FILE_HANDLE Handle;     ///< Handle for interacting with the opened file or NULL if closed.\r
  EFI_FILE_INFO     *Info;      ///< Pointer to the FileInfo struct for this file or NULL.\r
} EFI_SHELL_FILE_INFO;\r
\r
/**\r
  Returns whether any script files are currently being processed.\r
\r
  @retval TRUE                 There is at least one script file active.\r
  @retval FALSE                No script files are active now.\r
\r
**/\r
typedef\r
BOOLEAN\r
(EFIAPI *EFI_SHELL_BATCH_IS_ACTIVE) (\r
  VOID\r
  );\r
\r
/**\r
  Closes the file handle.\r
\r
  This function closes a specified file handle. All 'dirty' cached file data is\r
  flushed to the device, and the file is closed. In all cases, the handle is\r
  closed.\r
\r
  @param[in] FileHandle         The file handle to be closed.\r
\r
  @retval EFI_SUCCESS           The file closed sucessfully.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SHELL_CLOSE_FILE)(\r
  IN SHELL_FILE_HANDLE FileHandle\r
  );\r
\r
/**\r
  Creates a file or directory by name.\r
\r
  This function creates an empty new file or directory with the specified attributes and\r
  returns the new file's handle. If the file already exists and is read-only, then\r
  EFI_INVALID_PARAMETER will be returned.\r
\r
  If the file already existed, it is truncated and its attributes updated. If the file is\r
  created successfully, the FileHandle is the file's handle, else, the FileHandle is NULL.\r
\r
  If the file name begins with >v, then the file handle which is returned refers to the\r
  shell environment variable with the specified name. If the shell environment variable\r
  already exists and is non-volatile then EFI_INVALID_PARAMETER is returned.\r
\r
  @param[in] FileName           Pointer to NULL-terminated file path.\r
  @param[in] FileAttribs        The new file's attrbiutes.  The different attributes are\r
                                described in EFI_FILE_PROTOCOL.Open().\r
  @param[out] FileHandle        On return, points to the created file handle or directory's handle.\r
\r
  @retval EFI_SUCCESS           The file was opened.  FileHandle points to the new file's handle.\r
  @retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.\r
  @retval EFI_UNSUPPORTED       The file path could not be opened.\r
  @retval EFI_NOT_FOUND         The specified file could not be found on the device, or could not\r
                                file the file system on the device.\r
  @retval EFI_NO_MEDIA          The device has no medium.\r
  @retval EFI_MEDIA_CHANGED     The device has a different medium in it or the medium is no\r
                                longer supported.\r
  @retval EFI_DEVICE_ERROR      The device reported an error or can't get the file path according\r
                                the DirName.\r
  @retval EFI_VOLUME_CORRUPTED  The file system structures are corrupted.\r
  @retval EFI_WRITE_PROTECTED   An attempt was made to create a file, or open a file for write\r
                                when the media is write-protected.\r
  @retval EFI_ACCESS_DENIED     The service denied access to the file.\r
  @retval EFI_OUT_OF_RESOURCES  Not enough resources were available to open the file.\r
  @retval EFI_VOLUME_FULL       The volume is full.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SHELL_CREATE_FILE)(\r
  IN CONST CHAR16               *FileName,\r
  IN UINT64                     FileAttribs,\r
  OUT SHELL_FILE_HANDLE         *FileHandle\r
  );\r
\r
/**\r
  Deletes the file specified by the file handle.\r
\r
  This function closes and deletes a file. In all cases, the file handle is closed. If the file\r
  cannot be deleted, the warning code EFI_WARN_DELETE_FAILURE is returned, but the\r
  handle is still closed.\r
\r
  @param[in] FileHandle           The file handle to delete.\r
\r
  @retval EFI_SUCCESS             The file was closed and deleted and the handle was closed.\r
  @retval EFI_WARN_DELETE_FAILURE The handle was closed but the file was not deleted.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SHELL_DELETE_FILE)(\r
  IN SHELL_FILE_HANDLE FileHandle\r
  );\r
\r
/**\r
  Deletes the file specified by the file name.\r
\r
  This function deletes a file.\r
\r
  @param[in] FileName             Points to the NULL-terminated file name.\r
\r
  @retval EFI_SUCCESS             The file was deleted.\r
  @retval EFI_WARN_DELETE_FAILURE The handle was closed but the file was not deleted.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SHELL_DELETE_FILE_BY_NAME)(\r
  IN CONST CHAR16 *FileName\r
  );\r
\r
/**\r
  Disables the page break output mode.\r
**/\r
typedef\r
VOID\r
(EFIAPI *EFI_SHELL_DISABLE_PAGE_BREAK) (\r
  VOID\r
  );\r
\r
/**\r
  Enables the page break output mode.\r
**/\r
typedef\r
VOID\r
(EFIAPI *EFI_SHELL_ENABLE_PAGE_BREAK) (\r
  VOID\r
  );\r
\r
/**\r
  Execute the command line.\r
\r
  This function creates a nested instance of the shell and executes the specified\r
  command (CommandLine) with the specified environment (Environment). Upon return,\r
  the status code returned by the specified command is placed in StatusCode.\r
\r
  If Environment is NULL, then the current environment is used and all changes made\r
  by the commands executed will be reflected in the current environment. If the\r
  Environment is non-NULL, then the changes made will be discarded.\r
\r
  The CommandLine is executed from the current working directory on the current\r
  device.\r
\r
  @param[in] ParentImageHandle  A handle of the image that is executing the specified\r
                                command line.\r
  @param[in] CommandLine        Points to the NULL-terminated UCS-2 encoded string\r
                                containing the command line. If NULL then the command-\r
                                line will be empty.\r
  @param[in] Environment        Points to a NULL-terminated array of environment\r
                                variables with the format 'x=y', where x is the\r
                                environment variable name and y is the value. If this\r
                                is NULL, then the current shell environment is used.\r
  @param[out] ErrorCode         Points to the status code returned by the command.\r
\r
  @retval EFI_SUCCESS           The command executed successfully. The  status code\r
                                returned by the command is pointed to by StatusCode.\r
  @retval EFI_INVALID_PARAMETER The parameters are invalid.\r
  @retval EFI_OUT_OF_RESOURCES  Out of resources.\r
  @retval EFI_UNSUPPORTED       Nested shell invocations are not allowed.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SHELL_EXECUTE) (\r
  IN EFI_HANDLE                 *ParentImageHandle,\r
  IN CHAR16                     *CommandLine OPTIONAL,\r
  IN CHAR16                     **Environment OPTIONAL,\r
  OUT EFI_STATUS                *StatusCode OPTIONAL\r
  );\r
\r
/**\r
  Find files that match a specified pattern.\r
\r
  This function searches for all files and directories that match the specified\r
  FilePattern. The FilePattern can contain wild-card characters. The resulting file\r
  information is placed in the file list FileList.\r
\r
  The files in the file list are not opened. The OpenMode field is set to 0 and the FileInfo\r
  field is set to NULL.\r
\r
  @param[in] FilePattern        Points to a NULL-terminated shell file path, including wildcards.\r
  @param[out] FileList          On return, points to the start of a file list containing the names\r
                                of all matching files or else points to NULL if no matching files\r
                                were found.\r
\r
  @retval EFI_SUCCESS           Files found.\r
  @retval EFI_NOT_FOUND         No files found.\r
  @retval EFI_NO_MEDIA          The device has no media.\r
  @retval EFI_DEVICE_ERROR      The device reported an error.\r
  @retval EFI_VOLUME_CORRUPTED  The file system structures are corrupted.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SHELL_FIND_FILES)(\r
  IN CONST CHAR16               *FilePattern,\r
  OUT EFI_SHELL_FILE_INFO       **FileList\r
  );\r
\r
/**\r
  Find all files in a specified directory.\r
\r
  @param[in] FileDirHandle      Handle of the directory to search.\r
  @param[out] FileList          On return, points to the list of files in the directory\r
                                or NULL if there are no files in the directory.\r
\r
  @retval EFI_SUCCESS           File information was returned successfully.\r
  @retval EFI_VOLUME_CORRUPTED  The file system structures have been corrupted.\r
  @retval EFI_DEVICE_ERROR      The device reported an error.\r
  @retval EFI_NO_MEDIA          The device media is not present.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SHELL_FIND_FILES_IN_DIR)(\r
IN SHELL_FILE_HANDLE            FileDirHandle,\r
OUT EFI_SHELL_FILE_INFO         **FileList\r
);\r
\r
/**\r
  Flushes data back to a device.\r
\r
  This function flushes all modified data associated with a file to a device.\r
\r
  @param[in] FileHandle         The handle of the file to flush.\r
\r
  @retval EFI_SUCCESS           The data was flushed.\r
  @retval EFI_NO_MEDIA          The device has no medium.\r
  @retval EFI_DEVICE_ERROR      The device reported an error.\r
  @retval EFI_VOLUME_CORRUPTED  The file system structures are corrupted.\r
  @retval EFI_WRITE_PROTECTED   The file or medium is write-protected.\r
  @retval EFI_ACCESS_DENIED     The file was opened read-only.\r
  @retval EFI_VOLUME_FULL       The volume is full.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SHELL_FLUSH_FILE)(\r
  IN SHELL_FILE_HANDLE FileHandle\r
  );\r
\r
/**\r
  Frees the file list.\r
\r
  This function cleans up the file list and any related data structures. It has no\r
  impact on the files themselves.\r
\r
  @param[in] FileList           The file list to free. Type EFI_SHELL_FILE_INFO is\r
                                defined in OpenFileList().\r
\r
  @retval EFI_SUCCESS           Free the file list successfully.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SHELL_FREE_FILE_LIST) (\r
  IN EFI_SHELL_FILE_INFO **FileList\r
  );\r
\r
/**\r
  Returns the current directory on the specified device.\r
\r
  If FileSystemMapping is NULL, it returns the current working directory. If the\r
  FileSystemMapping is not NULL, it returns the current directory associated with the\r
  FileSystemMapping. In both cases, the returned name includes the file system\r
  mapping (i.e. fs0:\current-dir).\r
\r
  @param[in] FileSystemMapping  A pointer to the file system mapping. If NULL,\r
                                then the current working directory is returned.\r
\r
  @retval !=NULL                The current directory.\r
  @retval NULL                  Current directory does not exist.\r
**/\r
typedef\r
CONST CHAR16 *\r
(EFIAPI *EFI_SHELL_GET_CUR_DIR) (\r
  IN CONST CHAR16 *FileSystemMapping OPTIONAL\r
  );\r
\r
typedef UINT32 EFI_SHELL_DEVICE_NAME_FLAGS;\r
#define EFI_DEVICE_NAME_USE_COMPONENT_NAME  0x00000001\r
#define EFI_DEVICE_NAME_USE_DEVICE_PATH     0x00000002\r
\r
/**\r
  Gets the name of the device specified by the device handle.\r
\r
  This function gets the user-readable name of the device specified by the device\r
  handle. If no user-readable name could be generated, then *BestDeviceName will be\r
  NULL and EFI_NOT_FOUND will be returned.\r
\r
  If EFI_DEVICE_NAME_USE_COMPONENT_NAME is set, then the function will return the\r
  device's name using the EFI_COMPONENT_NAME2_PROTOCOL, if present on\r
  DeviceHandle.\r
\r
  If EFI_DEVICE_NAME_USE_DEVICE_PATH is set, then the function will return the\r
  device's name using the EFI_DEVICE_PATH_PROTOCOL, if present on DeviceHandle.\r
  If both EFI_DEVICE_NAME_USE_COMPONENT_NAME and\r
  EFI_DEVICE_NAME_USE_DEVICE_PATH are set, then\r
  EFI_DEVICE_NAME_USE_COMPONENT_NAME will have higher priority.\r
\r
  @param[in] DeviceHandle       The handle of the device.\r
  @param[in] Flags              Determines the possible sources of component names.\r
  @param[in] Language           A pointer to the language specified for the device\r
                                name, in the same format as described in the UEFI\r
                                specification, Appendix M.\r
  @param[out] BestDeviceName    On return, points to the callee-allocated NULL-\r
                                terminated name of the device. If no device name\r
                                could be found, points to NULL. The name must be\r
                                freed by the caller...\r
\r
  @retval EFI_SUCCESS           Get the name successfully.\r
  @retval EFI_NOT_FOUND         Fail to get the device name.\r
**/\r
typedef\r
EFI_STATUS\r
(EFIAPI *EFI_SHELL_GET_DEVICE_NAME) (\r
  IN EFI_HANDLE                   DeviceHandle,\r
  IN EFI_SHELL_DEVICE_NAME_FLAGS  Flags,\r
  IN CHAR8                        *Language,\r
  OUT CHAR16                      **BestDeviceName\r
  );\r
\r
/**\r
  Gets the device path from the mapping.\r
\r
  This function gets the device path associated with a mapping.\r
\r
  @param[in] Mapping                A pointer to the mapping\r
\r
  @retval !=NULL                Pointer to the device path that corresponds to the\r
                                device mapping. The returned pointer does not need\r
                                to be freed.\r
  @retval NULL                  There is no device path associated with the\r
                                specified mapping.\r
**/\r
typedef\r
CONST EFI_DEVICE_PATH_PROTOCOL *\r
(EFIAPI *EFI_SHELL_GET_DEVICE_PATH_FROM_MAP) (\r
  IN CONST CHAR16 *Mapping\r
  );\r
\r
/**\r
  Converts a file system style name to a device path.\r
\r
  This function converts a file system style name to a device path, by replacing any\r
  mapping references to the associated device path.\r
\r
  @param[in] Path               The pointer to the path.\r
\r
  @return                       The pointer of the file path. The file path is callee\r
                                allocated and should be freed by the caller.\r
**/\r
typedef\r
EFI_DEVICE_PATH_PROTOCOL *\r
(EFIAPI *EFI_SHELL_GET_DEVICE_PATH_FROM_FILE_PATH) (\r
  IN CONST CHAR16 *Path\r
  );\r
\r
/**\r
  Gets either a single or list of environment variables.\r
\r
  If name is not NULL then this function returns the current value of the specified\r
  environment variable.\r
\r
  If Name is NULL than a list of all environment variable names is returned.  Each a\r
  NULL terminated string with a double NULL terminating the list.\r
\r
  @param[in] Name               A pointer to the environment variable name.  If\r
                                Name is NULL, then the function will return all\r
                                of the defined shell environment variables.  In\r
                                the case where multiple environment variables are\r
                                being returned, each variable will be terminated by\r
                                a NULL, and the list will be terminated by a double\r
                                NULL.\r
\r
  @return                       A pointer to the returned string.\r
                                The returned pointer does not need to be freed by the caller.\r
\r
  @retval NULL                  The environment variable doesn't exist or there are\r
                                no environment variables.\r
**/\r
typedef\r
CONST CHAR16 *\r
(EFIAPI *EFI_SHELL_GET_ENV) (\r
  IN CONST CHAR16 *Name OPTIONAL\r
  );\r
\r
/**\r
  Gets the environment variable and Attributes, or list of environment variables.  Can be \r
  used instead of GetEnv().\r
\r
  This function returns the current value of the specified environment variable and\r
  the Attributes. If no variable name was specified, then all of the known\r
  variables will be returned.\r
\r
  @param[in] Name               A pointer to the environment variable name. If Name is NULL,\r
                                then the function will return all of the defined shell \r
                                environment variables. In the case where multiple environment\r
                                variables are being returned, each variable will be terminated \r
                                by a NULL, and the list will be terminated by a double NULL.\r
  @param[out] Attributes        If not NULL, a pointer to the returned attributes bitmask for\r
                                the environment variable. In the case where Name is NULL, and\r
                                multiple environment variables are being returned, Attributes\r
                                is undefined.\r
\r