src/boot/efi/util.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   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 UINTN ALIGN_TO(UINTN l, UINTN ali) {
  11         return ((l + ali - 1) & ~(ali - 1));
  12 }
  13
  14 static inline const CHAR16 *yes_no(BOOLEAN b) {
  15         return b ? L"yes" : L"no";
  16 }
  17
  18 EFI_STATUS parse_boolean(const CHAR8 *v, BOOLEAN *b);
  19
  20 UINT64 ticks_read(void);
  21 UINT64 ticks_freq(void);
  22 UINT64 time_usec(void);
  23
  24 EFI_STATUS efivar_set(const CHAR16 *name, const CHAR16 *value, BOOLEAN persistent);
  25 EFI_STATUS efivar_set_raw(const EFI_GUID *vendor, const CHAR16 *name, const VOID *buf, UINTN size, BOOLEAN persistent);
  26 EFI_STATUS efivar_set_int(CHAR16 *name, UINTN i, BOOLEAN persistent);
  27 VOID efivar_set_time_usec(CHAR16 *name, UINT64 usec);
  28
  29 EFI_STATUS efivar_get(const CHAR16 *name, CHAR16 **value);
  30 EFI_STATUS efivar_get_raw(const EFI_GUID *vendor, const CHAR16 *name, CHAR8 **buffer, UINTN *size);
  31 EFI_STATUS efivar_get_int(const CHAR16 *name, UINTN *i);
  32
  33 CHAR8 *strchra(CHAR8 *s, CHAR8 c);
  34 CHAR16 *stra_to_path(CHAR8 *stra);
  35 CHAR16 *stra_to_str(CHAR8 *stra);
  36
  37 EFI_STATUS file_read(EFI_FILE_HANDLE dir, const CHAR16 *name, UINTN off, UINTN size, CHAR8 **content, UINTN *content_size);
  38
  39 static inline void FreePoolp(void *p) {
  40         void *q = *(void**) p;
  41
  42         if (!q)
  43                 return;
  44
  45         FreePool(q);
  46 }
  47
  48 #define _cleanup_(x) __attribute__((__cleanup__(x)))
  49 #define _cleanup_freepool_ _cleanup_(FreePoolp)
  50
  51 static inline void FileHandleClosep(EFI_FILE_HANDLE *handle) {
  52         if (!*handle)
  53                 return;
  54
  55         uefi_call_wrapper((*handle)->Close, 1, *handle);
  56 }
  57
  58 extern const EFI_GUID loader_guid;
  59
  60 #define UINTN_MAX (~(UINTN)0)
  61 #define INTN_MAX ((INTN)(UINTN_MAX>>1))
  62
  63 #define TAKE_PTR(ptr)                           \
  64         ({                                      \
  65                 typeof(ptr) _ptr_ = (ptr);      \
  66                 (ptr) = NULL;                   \
  67                 _ptr_;                          \
  68         })
  69
  70 EFI_STATUS log_oom(void);