diff options
Diffstat (limited to 'gpxe/src/arch/i386/interface/pxe/pxe_file.c')
-rw-r--r-- | gpxe/src/arch/i386/interface/pxe/pxe_file.c | 306 |
1 files changed, 0 insertions, 306 deletions
diff --git a/gpxe/src/arch/i386/interface/pxe/pxe_file.c b/gpxe/src/arch/i386/interface/pxe/pxe_file.c deleted file mode 100644 index 8d832123..00000000 --- a/gpxe/src/arch/i386/interface/pxe/pxe_file.c +++ /dev/null @@ -1,306 +0,0 @@ -/** @file - * - * PXE FILE API - * - */ - -#include <stdlib.h> -#include <stdio.h> -#include <errno.h> -#include <byteswap.h> -#include <gpxe/uaccess.h> -#include <gpxe/posix_io.h> -#include <gpxe/features.h> -#include <pxe.h> -#include <realmode.h> - -/* - * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>. - * Portions (C) 2010 Shao Miller <shao.miller@yrdsb.edu.on.ca>. - * [PXE exit hook logic] - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -FILE_LICENCE ( GPL2_OR_LATER ); - -FEATURE ( FEATURE_MISC, "PXEXT", DHCP_EB_FEATURE_PXE_EXT, 2 ); - -/** - * FILE OPEN - * - * @v file_open Pointer to a struct s_PXENV_FILE_OPEN - * @v s_PXENV_FILE_OPEN::FileName URL of file to open - * @ret #PXENV_EXIT_SUCCESS File was opened - * @ret #PXENV_EXIT_FAILURE File was not opened - * @ret s_PXENV_FILE_OPEN::Status PXE status code - * @ret s_PXENV_FILE_OPEN::FileHandle Handle of opened file - * - */ -PXENV_EXIT_t pxenv_file_open ( struct s_PXENV_FILE_OPEN *file_open ) { - userptr_t filename; - size_t filename_len; - int fd; - - DBG ( "PXENV_FILE_OPEN" ); - - /* Copy name from external program, and open it */ - filename = real_to_user ( file_open->FileName.segment, - file_open->FileName.offset ); - filename_len = strlen_user ( filename, 0 ); - { - char uri_string[ filename_len + 1 ]; - - copy_from_user ( uri_string, filename, 0, - sizeof ( uri_string ) ); - DBG ( " %s", uri_string ); - fd = open ( uri_string ); - } - - if ( fd < 0 ) { - file_open->Status = PXENV_STATUS ( fd ); - return PXENV_EXIT_FAILURE; - } - - DBG ( " as file %d", fd ); - - file_open->FileHandle = fd; - file_open->Status = PXENV_STATUS_SUCCESS; - return PXENV_EXIT_SUCCESS; -} - -/** - * FILE CLOSE - * - * @v file_close Pointer to a struct s_PXENV_FILE_CLOSE - * @v s_PXENV_FILE_CLOSE::FileHandle File handle - * @ret #PXENV_EXIT_SUCCESS File was closed - * @ret #PXENV_EXIT_FAILURE File was not closed - * @ret s_PXENV_FILE_CLOSE::Status PXE status code - * - */ -PXENV_EXIT_t pxenv_file_close ( struct s_PXENV_FILE_CLOSE *file_close ) { - - DBG ( "PXENV_FILE_CLOSE %d", file_close->FileHandle ); - - close ( file_close->FileHandle ); - file_close->Status = PXENV_STATUS_SUCCESS; - return PXENV_EXIT_SUCCESS; -} - -/** - * FILE SELECT - * - * @v file_select Pointer to a struct s_PXENV_FILE_SELECT - * @v s_PXENV_FILE_SELECT::FileHandle File handle - * @ret #PXENV_EXIT_SUCCESS File has been checked for readiness - * @ret #PXENV_EXIT_FAILURE File has not been checked for readiness - * @ret s_PXENV_FILE_SELECT::Status PXE status code - * @ret s_PXENV_FILE_SELECT::Ready Indication of readiness - * - */ -PXENV_EXIT_t pxenv_file_select ( struct s_PXENV_FILE_SELECT *file_select ) { - fd_set fdset; - int ready; - - DBG ( "PXENV_FILE_SELECT %d", file_select->FileHandle ); - - FD_ZERO ( &fdset ); - FD_SET ( file_select->FileHandle, &fdset ); - if ( ( ready = select ( &fdset, 0 ) ) < 0 ) { - file_select->Status = PXENV_STATUS ( ready ); - return PXENV_EXIT_FAILURE; - } - - file_select->Ready = ( ready ? RDY_READ : 0 ); - file_select->Status = PXENV_STATUS_SUCCESS; - return PXENV_EXIT_SUCCESS; -} - -/** - * FILE READ - * - * @v file_read Pointer to a struct s_PXENV_FILE_READ - * @v s_PXENV_FILE_READ::FileHandle File handle - * @v s_PXENV_FILE_READ::BufferSize Size of data buffer - * @v s_PXENV_FILE_READ::Buffer Data buffer - * @ret #PXENV_EXIT_SUCCESS Data has been read from file - * @ret #PXENV_EXIT_FAILURE Data has not been read from file - * @ret s_PXENV_FILE_READ::Status PXE status code - * @ret s_PXENV_FILE_READ::Ready Indication of readiness - * @ret s_PXENV_FILE_READ::BufferSize Length of data read - * - */ -PXENV_EXIT_t pxenv_file_read ( struct s_PXENV_FILE_READ *file_read ) { - userptr_t buffer; - ssize_t len; - - DBG ( "PXENV_FILE_READ %d to %04x:%04x+%04x", file_read->FileHandle, - file_read->Buffer.segment, file_read->Buffer.offset, - file_read->BufferSize ); - - buffer = real_to_user ( file_read->Buffer.segment, - file_read->Buffer.offset ); - if ( ( len = read_user ( file_read->FileHandle, buffer, 0, - file_read->BufferSize ) ) < 0 ) { - file_read->Status = PXENV_STATUS ( len ); - return PXENV_EXIT_FAILURE; - } - - DBG ( " read %04zx", ( ( size_t ) len ) ); - - file_read->BufferSize = len; - file_read->Status = PXENV_STATUS_SUCCESS; - return PXENV_EXIT_SUCCESS; -} - -/** - * GET FILE SIZE - * - * @v get_file_size Pointer to a struct s_PXENV_GET_FILE_SIZE - * @v s_PXENV_GET_FILE_SIZE::FileHandle File handle - * @ret #PXENV_EXIT_SUCCESS File size has been determined - * @ret #PXENV_EXIT_FAILURE File size has not been determined - * @ret s_PXENV_GET_FILE_SIZE::Status PXE status code - * @ret s_PXENV_GET_FILE_SIZE::FileSize Size of file - */ -PXENV_EXIT_t pxenv_get_file_size ( struct s_PXENV_GET_FILE_SIZE - *get_file_size ) { - ssize_t filesize; - - DBG ( "PXENV_GET_FILE_SIZE %d", get_file_size->FileHandle ); - - filesize = fsize ( get_file_size->FileHandle ); - if ( filesize < 0 ) { - get_file_size->Status = PXENV_STATUS ( filesize ); - return PXENV_EXIT_FAILURE; - } - - DBG ( " is %zd", ( ( size_t ) filesize ) ); - - get_file_size->FileSize = filesize; - get_file_size->Status = PXENV_STATUS_SUCCESS; - return PXENV_EXIT_SUCCESS; -} - -/** - * FILE EXEC - * - * @v file_exec Pointer to a struct s_PXENV_FILE_EXEC - * @v s_PXENV_FILE_EXEC::Command Command to execute - * @ret #PXENV_EXIT_SUCCESS Command was executed successfully - * @ret #PXENV_EXIT_FAILURE Command was not executed successfully - * @ret s_PXENV_FILE_EXEC::Status PXE status code - * - */ -PXENV_EXIT_t pxenv_file_exec ( struct s_PXENV_FILE_EXEC *file_exec ) { - userptr_t command; - size_t command_len; - int rc; - - DBG ( "PXENV_FILE_EXEC" ); - - /* Copy name from external program, and exec it */ - command = real_to_user ( file_exec->Command.segment, - file_exec->Command.offset ); - command_len = strlen_user ( command, 0 ); - { - char command_string[ command_len + 1 ]; - - copy_from_user ( command_string, command, 0, - sizeof ( command_string ) ); - DBG ( " %s", command_string ); - - if ( ( rc = system ( command_string ) ) != 0 ) { - file_exec->Status = PXENV_STATUS ( rc ); - return PXENV_EXIT_FAILURE; - } - } - - file_exec->Status = PXENV_STATUS_SUCCESS; - return PXENV_EXIT_SUCCESS; -} - -segoff_t __data16 ( pxe_exit_hook ) = { 0, 0 }; -#define pxe_exit_hook __use_data16 ( pxe_exit_hook ) - -/** - * FILE API CHECK - * - * @v file_exec Pointer to a struct s_PXENV_FILE_API_CHECK - * @v s_PXENV_FILE_API_CHECK::Magic Inbound magic number (0x91d447b2) - * @ret #PXENV_EXIT_SUCCESS Command was executed successfully - * @ret #PXENV_EXIT_FAILURE Command was not executed successfully - * @ret s_PXENV_FILE_API_CHECK::Status PXE status code - * @ret s_PXENV_FILE_API_CHECK::Magic Outbound magic number (0xe9c17b20) - * @ret s_PXENV_FILE_API_CHECK::Provider "gPXE" (0x45585067) - * @ret s_PXENV_FILE_API_CHECK::APIMask API function bitmask - * @ret s_PXENV_FILE_API_CHECK::Flags Reserved - * - */ -PXENV_EXIT_t pxenv_file_api_check ( struct s_PXENV_FILE_API_CHECK *file_api_check ) { - DBG ( "PXENV_FILE_API_CHECK" ); - - if ( file_api_check->Magic != 0x91d447b2 ) { - file_api_check->Status = PXENV_STATUS_BAD_FUNC; - return PXENV_EXIT_FAILURE; - } else if ( file_api_check->Size < - sizeof(struct s_PXENV_FILE_API_CHECK) ) { - file_api_check->Status = PXENV_STATUS_OUT_OF_RESOURCES; - return PXENV_EXIT_FAILURE; - } else { - file_api_check->Status = PXENV_STATUS_SUCCESS; - file_api_check->Size = sizeof(struct s_PXENV_FILE_API_CHECK); - file_api_check->Magic = 0xe9c17b20; - file_api_check->Provider = 0x45585067; /* "gPXE" */ - file_api_check->APIMask = 0x0000007f; /* Functions e0-e6 */ - /* Check to see if we have a PXE exit hook */ - if ( pxe_exit_hook.segment | pxe_exit_hook.offset ) - /* Function e7, also */ - file_api_check->APIMask |= 0x00000080; - file_api_check->Flags = 0; /* None defined */ - return PXENV_EXIT_SUCCESS; - } -} - -/** - * FILE EXIT HOOK - * - * @v file_exit_hook Pointer to a struct - * s_PXENV_FILE_EXIT_HOOK - * @v s_PXENV_FILE_EXIT_HOOK::Hook SEG16:OFF16 to jump to - * @ret #PXENV_EXIT_SUCCESS Successfully set hook - * @ret #PXENV_EXIT_FAILURE We're not an NBP build - * @ret s_PXENV_FILE_EXIT_HOOK::Status PXE status code - * - */ -PXENV_EXIT_t pxenv_file_exit_hook ( struct s_PXENV_FILE_EXIT_HOOK - *file_exit_hook ) { - DBG ( "PXENV_FILE_EXIT_HOOK" ); - - /* Check to see if we have a PXE exit hook */ - if ( pxe_exit_hook.segment | pxe_exit_hook.offset ) { - /* We'll jump to the specified SEG16:OFF16 during exit */ - pxe_exit_hook.segment = file_exit_hook->Hook.segment; - pxe_exit_hook.offset = file_exit_hook->Hook.offset; - file_exit_hook->Status = PXENV_STATUS_SUCCESS; - return PXENV_EXIT_SUCCESS; - } - - DBG ( " not NBP" ); - file_exit_hook->Status = PXENV_STATUS_UNSUPPORTED; - return PXENV_EXIT_FAILURE; -} - |