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https://github.com/fastfetch-cli/fastfetch.git
synced 2026-10-28 07:44:06 +01:00
Carter Li
37 lines
1.2 KiB
C
37 lines
1.2 KiB
C
#include "bootmgr.h"
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#include "common/debug.h"
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#include "common/io.h"
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#include "efi_helper.h"
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#include <stdalign.h>
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#define FF_EFIVARS_PATH_PREFIX "/sys/firmware/efi/efivars/"
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#define FF_EFI_GLOBAL_GUID "8be4df61-93ca-11d2-aa0d-00e098032b8c"
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const char* ffDetectBootmgr(FFBootmgrResult* result) {
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alignas(uint16_t) uint8_t buffer[2048];
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if (ffReadFileData(FF_EFIVARS_PATH_PREFIX "BootCurrent-" FF_EFI_GLOBAL_GUID, sizeof(buffer), buffer) != 6) {
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FF_DEBUG("Failed to read efivar: BootCurrent");
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return "Failed to read efivar: BootCurrent";
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}
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result->order = *(uint16_t*) &buffer[4];
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snprintf((char*) buffer, sizeof(buffer), FF_EFIVARS_PATH_PREFIX "Boot%04X-" FF_EFI_GLOBAL_GUID, result->order);
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ssize_t size = ffReadFileData((const char*) buffer, sizeof(buffer), buffer);
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if (size < 5 + (int) sizeof(FFEfiLoadOption) || size == (ssize_t) sizeof(buffer)) {
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FF_DEBUG("Failed to read efivar: Boot####");
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return "Failed to read efivar: Boot####";
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}
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ffEfiFillLoadOption((FFEfiLoadOption*) &buffer[4], result);
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if (ffReadFileData(FF_EFIVARS_PATH_PREFIX "SecureBoot-" FF_EFI_GLOBAL_GUID, sizeof(buffer), buffer) >= 5) {
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result->secureBoot = buffer[4] == 1;
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}
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return nullptr;
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}
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