Daan De Meyer
6196e414a5
Let's ensure all of our source file names are unique without having to take the directory into account. This allows us to create meson targets or unit tests identified by the the name of the source file they operate on without having to include the full path of the source file in the target or test name to avoid conflicts.
55 lines
3.0 KiB
C
55 lines
3.0 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include "device-path-util.h"
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#include "efi-efivars.h"
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#include "export-vars.h"
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#include "part-discovery.h"
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#include "url-discovery.h"
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#include "util.h"
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void export_common_variables(EFI_LOADED_IMAGE_PROTOCOL *loaded_image) {
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assert(loaded_image);
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/* Export the device path this image is started from, if it's not set yet */
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if (loaded_image->DeviceHandle) {
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if (efivar_get_raw(MAKE_GUID_PTR(LOADER), u"LoaderDevicePartUUID", /* ret_data= */ NULL, /* ret_size= */ NULL) != EFI_SUCCESS) {
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_cleanup_free_ char16_t *uuid = disk_get_part_uuid(loaded_image->DeviceHandle);
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if (uuid)
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efivar_set_str16(MAKE_GUID_PTR(LOADER), u"LoaderDevicePartUUID", uuid, 0);
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}
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if (efivar_get_raw(MAKE_GUID_PTR(LOADER), u"LoaderDeviceURL", /* ret_data= */ NULL, /* ret_size= */ NULL) != EFI_SUCCESS) {
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_cleanup_free_ char16_t *url = disk_get_url(loaded_image->DeviceHandle);
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if (url)
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efivar_set_str16(MAKE_GUID_PTR(LOADER), u"LoaderDeviceURL", url, 0);
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}
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}
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/* If LoaderImageIdentifier is not set, assume the image with this stub was loaded directly from the
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* UEFI firmware without any boot loader, and hence set the LoaderImageIdentifier ourselves. Note
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* that some boot chain loaders neither set LoaderImageIdentifier nor make FilePath available to us,
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* in which case there's simple nothing to set for us. (The UEFI spec doesn't really say who's wrong
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* here, i.e. whether FilePath may be NULL or not, hence handle this gracefully and check if FilePath
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* is non-NULL explicitly.) */
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if (loaded_image->FilePath &&
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efivar_get_raw(MAKE_GUID_PTR(LOADER), u"LoaderImageIdentifier", NULL, NULL) != EFI_SUCCESS) {
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_cleanup_free_ char16_t *s = NULL;
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if (device_path_to_str(loaded_image->FilePath, &s) == EFI_SUCCESS)
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efivar_set_str16(MAKE_GUID_PTR(LOADER), u"LoaderImageIdentifier", s, 0);
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}
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/* if LoaderFirmwareInfo is not set, let's set it */
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if (efivar_get_raw(MAKE_GUID_PTR(LOADER), u"LoaderFirmwareInfo", NULL, NULL) != EFI_SUCCESS) {
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_cleanup_free_ char16_t *s = NULL;
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s = xasprintf("%ls %u.%02u", ST->FirmwareVendor, ST->FirmwareRevision >> 16, ST->FirmwareRevision & 0xffff);
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efivar_set_str16(MAKE_GUID_PTR(LOADER), u"LoaderFirmwareInfo", s, 0);
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}
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/* ditto for LoaderFirmwareType */
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if (efivar_get_raw(MAKE_GUID_PTR(LOADER), u"LoaderFirmwareType", NULL, NULL) != EFI_SUCCESS) {
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_cleanup_free_ char16_t *s = NULL;
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s = xasprintf("UEFI %u.%02u", ST->Hdr.Revision >> 16, ST->Hdr.Revision & 0xffff);
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efivar_set_str16(MAKE_GUID_PTR(LOADER), u"LoaderFirmwareType", s, 0);
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}
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}
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