errlog.c

   1 /*
   2  * errlog.c
   3  * Copyright 2017 Peter Jones <pjones@redhat.com>
   4  *
   5  * Distributed under terms of the GPLv3 license.
   6  */
   7
   8 #include "shim.h"
   9
  10 static CHAR16 **errs = NULL;
  11 static UINTN nerrs = 0;
  12
  13 EFI_STATUS
  14 VLogError(const char *file, int line, const char *func, CHAR16 *fmt, va_list args)
  15 {
  16         va_list args2;
  17         CHAR16 **newerrs;
  18
  19         newerrs = ReallocatePool(errs, (nerrs + 1) * sizeof(*errs),
  20                                        (nerrs + 3) * sizeof(*errs));
  21         if (!newerrs)
  22                 return EFI_OUT_OF_RESOURCES;
  23
  24         newerrs[nerrs] = PoolPrint(L"%a:%d %a() ", file, line, func);
  25         if (!newerrs[nerrs])
  26                 return EFI_OUT_OF_RESOURCES;
  27         va_copy(args2, args);
  28         newerrs[nerrs+1] = VPoolPrint(fmt, args2);
  29         if (!newerrs[nerrs+1])
  30                 return EFI_OUT_OF_RESOURCES;
  31         va_end(args2);
  32
  33         nerrs += 2;
  34         newerrs[nerrs] = NULL;
  35         errs = newerrs;
  36
  37         return EFI_SUCCESS;
  38 }
  39
  40 EFI_STATUS
  41 LogError_(const char *file, int line, const char *func, CHAR16 *fmt, ...)
  42 {
  43         va_list args;
  44         EFI_STATUS efi_status;
  45
  46         va_start(args, fmt);
  47         efi_status = VLogError(file, line, func, fmt, args);
  48         va_end(args);
  49
  50         return efi_status;
  51 }
  52
  53 VOID
  54 PrintErrors(VOID)
  55 {
  56         UINTN i;
  57
  58         if (!verbose)
  59                 return;
  60
  61         for (i = 0; i < nerrs; i++)
  62                 console_print(L"%s", errs[i]);
  63 }
  64
  65 VOID
  66 ClearErrors(VOID)
  67 {
  68         UINTN i;
  69
  70         for (i = 0; i < nerrs; i++)
  71                 FreePool(errs[i]);
  72         FreePool(errs);
  73         nerrs = 0;
  74         errs = NULL;
  75 }
  76
  77 // vim:fenc=utf-8:tw=75