mirror of
https://git.proxmox.com/git/fwupd
synced 2025-05-02 00:37:35 +00:00
117 lines
2.7 KiB
C
117 lines
2.7 KiB
C
/*
|
|
* Copyright (C) 2021 Richard Hughes <richard@hughsie.com>
|
|
*
|
|
* SPDX-License-Identifier: LGPL-2.1+
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <fwupdplugin.h>
|
|
|
|
#include "fu-efi-firmware-file.h"
|
|
#include "fu-efi-firmware-filesystem.h"
|
|
|
|
/**
|
|
* FuEfiFirmwareFilesystem:
|
|
*
|
|
* A UEFI filesystem.
|
|
*
|
|
* See also: [class@FuFirmware]
|
|
*/
|
|
|
|
G_DEFINE_TYPE(FuEfiFirmwareFilesystem, fu_efi_firmware_filesystem, FU_TYPE_FIRMWARE)
|
|
|
|
static gboolean
|
|
fu_efi_firmware_filesystem_parse(FuFirmware *firmware,
|
|
GBytes *fw,
|
|
guint64 addr_start,
|
|
guint64 addr_end,
|
|
FwupdInstallFlags flags,
|
|
GError **error)
|
|
{
|
|
gsize offset = 0;
|
|
gsize bufsz = 0x0;
|
|
const guint8 *buf = g_bytes_get_data(fw, &bufsz);
|
|
|
|
while (offset + 0x18 < bufsz) {
|
|
g_autoptr(FuFirmware) img = fu_efi_firmware_file_new();
|
|
g_autoptr(GBytes) fw_tmp = NULL;
|
|
gboolean is_freespace = TRUE;
|
|
|
|
/* ignore free space */
|
|
for (guint i = 0; i < 0x18; i++) {
|
|
if (buf[offset + i] != 0xff) {
|
|
is_freespace = FALSE;
|
|
break;
|
|
}
|
|
}
|
|
if (is_freespace)
|
|
break;
|
|
|
|
fw_tmp = fu_common_bytes_new_offset(fw, offset, bufsz - offset, error);
|
|
if (fw_tmp == NULL)
|
|
return FALSE;
|
|
if (!fu_firmware_parse(img, fw_tmp, flags, error)) {
|
|
g_prefix_error(error, "failed to parse EFI file at 0x%x: ", (guint)offset);
|
|
return FALSE;
|
|
}
|
|
fu_firmware_set_offset(firmware, offset);
|
|
fu_firmware_add_image(firmware, img);
|
|
|
|
/* next! */
|
|
offset += fu_firmware_get_size(img);
|
|
}
|
|
|
|
/* success */
|
|
return TRUE;
|
|
}
|
|
|
|
static GBytes *
|
|
fu_efi_firmware_filesystem_write(FuFirmware *firmware, GError **error)
|
|
{
|
|
g_autoptr(GByteArray) buf = g_byte_array_new();
|
|
g_autoptr(GPtrArray) images = fu_firmware_get_images(firmware);
|
|
|
|
/* add each file */
|
|
for (guint i = 0; i < images->len; i++) {
|
|
FuFirmware *img = g_ptr_array_index(images, i);
|
|
g_autoptr(GBytes) blob = NULL;
|
|
fu_firmware_set_offset(img, buf->len);
|
|
blob = fu_firmware_write(img, error);
|
|
if (blob == NULL)
|
|
return NULL;
|
|
fu_byte_array_append_bytes(buf, blob);
|
|
fu_byte_array_align_up(buf, fu_firmware_get_alignment(firmware), 0xFF);
|
|
}
|
|
|
|
/* success */
|
|
return g_byte_array_free_to_bytes(g_steal_pointer(&buf));
|
|
}
|
|
|
|
static void
|
|
fu_efi_firmware_filesystem_init(FuEfiFirmwareFilesystem *self)
|
|
{
|
|
fu_firmware_set_alignment(FU_FIRMWARE(self), FU_FIRMWARE_ALIGNMENT_8);
|
|
}
|
|
|
|
static void
|
|
fu_efi_firmware_filesystem_class_init(FuEfiFirmwareFilesystemClass *klass)
|
|
{
|
|
FuFirmwareClass *klass_firmware = FU_FIRMWARE_CLASS(klass);
|
|
klass_firmware->parse = fu_efi_firmware_filesystem_parse;
|
|
klass_firmware->write = fu_efi_firmware_filesystem_write;
|
|
}
|
|
|
|
/**
|
|
* fu_efi_firmware_filesystem_new:
|
|
*
|
|
* Creates a new #FuFirmware
|
|
*
|
|
* Since: 1.6.2
|
|
**/
|
|
FuFirmware *
|
|
fu_efi_firmware_filesystem_new(void)
|
|
{
|
|
return FU_FIRMWARE(g_object_new(FU_TYPE_EFI_FIRMWARE_FILESYSTEM, NULL));
|
|
}
|