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boot: Add device_path_to_str

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This commit is contained in:
Jan Janssen 2022-06-05 15:31:01 +02:00
parent 6c65a9e1d6
commit 3b3eb196a2
2 changed files with 20 additions and 0 deletions
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19
src/boot/efi/util.c
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@ -769,6 +769,25 @@ EFI_STATUS make_file_device_path(EFI_HANDLE device, const char16_t *file, EFI_DE
return EFI_SUCCESS;
}
EFI_STATUS device_path_to_str(const EFI_DEVICE_PATH *dp, char16_t **ret) {
EFI_DEVICE_PATH_TO_TEXT_PROTOCOL *dp_to_text;
EFI_STATUS err;
assert(dp);
assert(ret);
err = BS->LocateProtocol(&(EFI_GUID) EFI_DEVICE_PATH_TO_TEXT_PROTOCOL_GUID, NULL, (void **) &dp_to_text);
if (err != EFI_SUCCESS)
return err;
char16_t *str = dp_to_text->ConvertDevicePathToText(dp, false, false);
if (!str)
return EFI_OUT_OF_RESOURCES;
*ret = str;
return EFI_SUCCESS;
}
#if defined(__i386__) || defined(__x86_64__)
bool in_hypervisor(void) {
uint32_t eax, ebx, ecx, edx;

1
src/boot/efi/util.h
View File

@ -207,6 +207,7 @@ static inline void beep(UINTN beep_count) {}
EFI_STATUS open_volume(EFI_HANDLE device, EFI_FILE **ret_file);
EFI_STATUS make_file_device_path(EFI_HANDLE device, const char16_t *file, EFI_DEVICE_PATH **ret_dp);
EFI_STATUS device_path_to_str(const EFI_DEVICE_PATH *dp, char16_t **ret);
#if defined(__i386__) || defined(__x86_64__)
bool in_hypervisor(void);