diff options
Diffstat (limited to 'src/interface/efi/efi_blacklist.c')
| -rw-r--r-- | src/interface/efi/efi_blacklist.c | 237 |
1 files changed, 0 insertions, 237 deletions
diff --git a/src/interface/efi/efi_blacklist.c b/src/interface/efi/efi_blacklist.c deleted file mode 100644 index 292b28e8c..000000000 --- a/src/interface/efi/efi_blacklist.c +++ /dev/null @@ -1,237 +0,0 @@ -/* - * Copyright (C) 2019 Michael Brown <mbrown@fensystems.co.uk>. - * - * 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., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - */ - -FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); - -#include <stddef.h> -#include <string.h> -#include <errno.h> -#include <ipxe/settings.h> -#include <ipxe/efi/efi.h> -#include <ipxe/efi/Protocol/DriverBinding.h> -#include <ipxe/efi/Protocol/LoadedImage.h> -#include <ipxe/efi/Protocol/ComponentName.h> -#include <ipxe/efi/efi_blacklist.h> - -/** @file - * - * EFI driver blacklist - * - */ - -/** A blacklisted driver */ -struct efi_blacklist { - /** Name */ - const char *name; - /** - * Check if driver is blacklisted - * - * @v binding Driver binding protocol - * @v loaded Loaded image protocol - * @v wtf Component name protocol, if present - * @ret blacklisted Driver is the blacklisted driver - */ - int ( * blacklist ) ( EFI_DRIVER_BINDING_PROTOCOL *binding, - EFI_LOADED_IMAGE_PROTOCOL *loaded, - EFI_COMPONENT_NAME_PROTOCOL *wtf ); -}; - -/** - * Blacklist Dell Ip4ConfigDxe driver - * - * @v binding Driver binding protocol - * @v loaded Loaded image protocol - * @v wtf Component name protocol, if present - * @ret blacklisted Driver is the blacklisted driver - */ -static int -efi_blacklist_dell_ip4config ( EFI_DRIVER_BINDING_PROTOCOL *binding __unused, - EFI_LOADED_IMAGE_PROTOCOL *loaded __unused, - EFI_COMPONENT_NAME_PROTOCOL *wtf ) { - static const CHAR16 ip4cfg[] = L"IP4 CONFIG Network Service Driver"; - static const char dell[] = "Dell Inc."; - char manufacturer[ sizeof ( dell ) ]; - CHAR16 *name; - - /* Check driver name */ - if ( ! wtf ) - return 0; - if ( wtf->GetDriverName ( wtf, "eng", &name ) != 0 ) - return 0; - if ( memcmp ( name, ip4cfg, sizeof ( ip4cfg ) ) != 0 ) - return 0; - - /* Check manufacturer */ - fetch_string_setting ( NULL, &manufacturer_setting, manufacturer, - sizeof ( manufacturer ) ); - if ( strcmp ( manufacturer, dell ) != 0 ) - return 0; - - return 1; -} - -/** Blacklisted drivers */ -static struct efi_blacklist efi_blacklists[] = { - { - .name = "Dell Ip4Config", - .blacklist = efi_blacklist_dell_ip4config, - }, -}; - -/** - * Find driver blacklisting, if any - * - * @v driver Driver binding handle - * @ret blacklist Driver blacklisting, or NULL - * @ret rc Return status code - */ -static int efi_blacklist ( EFI_HANDLE driver, - struct efi_blacklist **blacklist ) { - EFI_BOOT_SERVICES *bs = efi_systab->BootServices; - union { - EFI_DRIVER_BINDING_PROTOCOL *binding; - void *interface; - } binding; - union { - EFI_LOADED_IMAGE_PROTOCOL *loaded; - void *interface; - } loaded; - union { - EFI_COMPONENT_NAME_PROTOCOL *wtf; - void *interface; - } wtf; - unsigned int i; - EFI_HANDLE image; - EFI_STATUS efirc; - int rc; - - DBGC2 ( &efi_blacklists, "EFIBL checking %s\n", - efi_handle_name ( driver ) ); - - /* Mark as not blacklisted */ - *blacklist = NULL; - - /* Open driver binding protocol */ - if ( ( efirc = bs->OpenProtocol ( - driver, &efi_driver_binding_protocol_guid, - &binding.interface, efi_image_handle, driver, - EFI_OPEN_PROTOCOL_GET_PROTOCOL ) ) != 0 ) { - rc = -EEFI ( efirc ); - DBGC ( driver, "EFIBL %s could not open driver binding " - "protocol: %s\n", efi_handle_name ( driver ), - strerror ( rc ) ); - goto err_binding; - } - image = binding.binding->ImageHandle; - - /* Open loaded image protocol */ - if ( ( efirc = bs->OpenProtocol ( - image, &efi_loaded_image_protocol_guid, - &loaded.interface, efi_image_handle, image, - EFI_OPEN_PROTOCOL_GET_PROTOCOL ) ) != 0 ) { - rc = -EEFI ( efirc ); - DBGC ( driver, "EFIBL %s could not open", - efi_handle_name ( driver ) ); - DBGC ( driver, " %s loaded image protocol: %s\n", - efi_handle_name ( image ), strerror ( rc ) ); - goto err_loaded; - } - - /* Open component name protocol, if present*/ - if ( ( efirc = bs->OpenProtocol ( - driver, &efi_component_name_protocol_guid, - &wtf.interface, efi_image_handle, driver, - EFI_OPEN_PROTOCOL_GET_PROTOCOL ) ) != 0 ) { - /* Ignore failure; is not required to be present */ - wtf.interface = NULL; - } - - /* Check blacklistings */ - for ( i = 0 ; i < ( sizeof ( efi_blacklists ) / - sizeof ( efi_blacklists[0] ) ) ; i++ ) { - if ( efi_blacklists[i].blacklist ( binding.binding, - loaded.loaded, wtf.wtf ) ) { - *blacklist = &efi_blacklists[i]; - break; - } - } - - /* Success */ - rc = 0; - - /* Close protocols */ - if ( wtf.wtf ) { - bs->CloseProtocol ( driver, &efi_component_name_protocol_guid, - efi_image_handle, driver ); - } - bs->CloseProtocol ( image, &efi_loaded_image_protocol_guid, - efi_image_handle, image ); - err_loaded: - bs->CloseProtocol ( driver, &efi_driver_binding_protocol_guid, - efi_image_handle, driver ); - err_binding: - return rc; -} - -/** - * Unload any blacklisted drivers - * - */ -void efi_unload_blacklist ( void ) { - EFI_BOOT_SERVICES *bs = efi_systab->BootServices; - struct efi_blacklist *blacklist; - EFI_HANDLE *drivers; - EFI_HANDLE driver; - UINTN num_drivers; - unsigned int i; - EFI_STATUS efirc; - int rc; - - /* Locate all driver binding protocol handles */ - if ( ( efirc = bs->LocateHandleBuffer ( - ByProtocol, &efi_driver_binding_protocol_guid, - NULL, &num_drivers, &drivers ) ) != 0 ) { - rc = -EEFI ( efirc ); - DBGC ( &efi_blacklists, "EFIBL could not list all drivers: " - "%s\n", strerror ( rc ) ); - return; - } - - /* Unload any blacklisted drivers */ - for ( i = 0 ; i < num_drivers ; i++ ) { - driver = drivers[i]; - if ( ( rc = efi_blacklist ( driver, &blacklist ) ) != 0 ) { - DBGC ( driver, "EFIBL could not determine " - "blacklisting for %s: %s\n", - efi_handle_name ( driver ), strerror ( rc ) ); - continue; - } - if ( ! blacklist ) - continue; - DBGC ( driver, "EFIBL unloading %s (%s)\n", - efi_handle_name ( driver ), blacklist->name ); - if ( ( efirc = bs->UnloadImage ( driver ) ) != 0 ) { - DBGC ( driver, "EFIBL could not unload %s: %s\n", - efi_handle_name ( driver ), strerror ( rc ) ); - } - } - - /* Free handle list */ - bs->FreePool ( drivers ); -} |