src/boot/efi/util.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 #include <efi.h>
   5 #include <efilib.h>
   6
   7 #define ELEMENTSOF(x) (sizeof(x)/sizeof((x)[0]))
   8 #define OFFSETOF(x,y) __builtin_offsetof(x,y)
   9
  10 static inline const CHAR16 *yes_no(BOOLEAN b) {
  11         return b ? L"yes" : L"no";
  12 }
  13
  14 EFI_STATUS parse_boolean(const CHAR8 *v, BOOLEAN *b);
  15
  16 UINT64 ticks_read(void);
  17 UINT64 ticks_freq(void);
  18 UINT64 time_usec(void);
  19
  20 EFI_STATUS efivar_set(const CHAR16 *name, const CHAR16 *value, BOOLEAN persistent);
  21 EFI_STATUS efivar_set_raw(const EFI_GUID *vendor, const CHAR16 *name, const VOID *buf, UINTN size, BOOLEAN persistent);
  22 EFI_STATUS efivar_set_int(CHAR16 *name, UINTN i, BOOLEAN persistent);
  23 VOID efivar_set_time_usec(CHAR16 *name, UINT64 usec);
  24
  25 EFI_STATUS efivar_get(const CHAR16 *name, CHAR16 **value);
  26 EFI_STATUS efivar_get_raw(const EFI_GUID *vendor, const CHAR16 *name, CHAR8 **buffer, UINTN *size);
  27 EFI_STATUS efivar_get_int(const CHAR16 *name, UINTN *i);
  28
  29 CHAR8 *strchra(CHAR8 *s, CHAR8 c);
  30 CHAR16 *stra_to_path(CHAR8 *stra);
  31 CHAR16 *stra_to_str(CHAR8 *stra);
  32
  33 EFI_STATUS file_read(EFI_FILE_HANDLE dir, const CHAR16 *name, UINTN off, UINTN size, CHAR8 **content, UINTN *content_size);
  34
  35 static inline void FreePoolp(void *p) {
  36         void *q = *(void**) p;
  37
  38         if (!q)
  39                 return;
  40
  41         FreePool(q);
  42 }
  43
  44 #define _cleanup_(x) __attribute__((__cleanup__(x)))
  45 #define _cleanup_freepool_ _cleanup_(FreePoolp)
  46
  47 static inline void FileHandleClosep(EFI_FILE_HANDLE *handle) {
  48         if (!*handle)
  49                 return;
  50
  51         uefi_call_wrapper((*handle)->Close, 1, *handle);
  52 }
  53
  54 const EFI_GUID loader_guid;
  55
  56 #define UINTN_MAX (~(UINTN)0)
  57 #define INTN_MAX ((INTN)(UINTN_MAX>>1))