efi_autoexec.h File Reference

EFI autoexec script. More...

Go to the source code of this file.

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
int	efi_autoexec_load (void)
	Load autoexec script. More...

Detailed Description

EFI autoexec script.

Definition in file efi_autoexec.h.

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

efi_autoexec_load()

int efi_autoexec_load

(

void

)

Load autoexec script.

Return values

rc	Return status code

Definition at line 165 of file efi_autoexec.c.

                               {
        EFI_HANDLE device = efi_loaded_image->DeviceHandle;
        EFI_HANDLE handle;
        struct efi_autoexec_loader *loader;
        struct image *image;
        unsigned int i;
        int rc;

        /* Use first applicable loader */
        for ( i = 0 ; i < ( sizeof ( efi_autoexec_loaders ) /
                            sizeof ( efi_autoexec_loaders[0] ) ) ; i ++ ) {

                /* Locate required protocol for this loader */
                loader = &efi_autoexec_loaders[i];
                if ( ( rc = efi_locate_device ( device, loader->protocol,
                                                &handle, 0 ) ) != 0 ) {
                        DBGC ( device, "EFI %s found no %s: %s\n",
                               efi_handle_name ( device ),
                               efi_guid_ntoa ( loader->protocol ),
                               strerror ( rc ) );
                        continue;
                }
                DBGC ( device, "EFI %s found %s on ",
                       efi_handle_name ( device ),
                       efi_guid_ntoa ( loader->protocol ) );
                DBGC ( device, "%s\n", efi_handle_name ( handle ) );

                /* Try loading */
                if ( ( rc = loader->load ( handle, &image ) ) != 0 )
                        return rc;

                /* Discard zero-length images */
                if ( ! image->len ) {
                        DBGC ( device, "EFI %s discarding zero-length %s\n",
                               efi_handle_name ( device ), image->name );
                        unregister_image ( image );
                        return -ENOENT;
                }

                DBGC ( device, "EFI %s loaded %s (%zd bytes)\n",
                       efi_handle_name ( device ), image->name, image->len );
                return 0;
        }

        return -ENOENT;
}

References DBGC, EFI_LOADED_IMAGE_PROTOCOL::DeviceHandle, efi_autoexec_loaders, efi_guid_ntoa(), efi_handle_name(), efi_loaded_image, efi_locate_device(), ENOENT, handle, image::len, efi_autoexec_loader::load, image::name, efi_autoexec_loader::protocol, rc, strerror(), and unregister_image().

Referenced by efi_probe().