lib/libfdt/fdt_strerror.c

   1 /*
   2  * libfdt - Flat Device Tree manipulation
   3  * Copyright (C) 2006 David Gibson, IBM Corporation.
   4  * SPDX-License-Identifier:     GPL-2.0+ BSD-2-Clause
   5  */
   6 #include "libfdt_env.h"
   7
   8 #ifndef USE_HOSTCC
   9 #include <fdt.h>
  10 #include <libfdt.h>
  11 #else
  12 #include "fdt_host.h"
  13 #endif
  14
  15 #include "libfdt_internal.h"
  16
  17 struct fdt_errtabent {
  18         const char *str;
  19 };
  20
  21 #define FDT_ERRTABENT(val) \
  22         [(val)] = { .str = #val, }
  23
  24 static struct fdt_errtabent fdt_errtable[] = {
  25         FDT_ERRTABENT(FDT_ERR_NOTFOUND),
  26         FDT_ERRTABENT(FDT_ERR_EXISTS),
  27         FDT_ERRTABENT(FDT_ERR_NOSPACE),
  28
  29         FDT_ERRTABENT(FDT_ERR_BADOFFSET),
  30         FDT_ERRTABENT(FDT_ERR_BADPATH),
  31         FDT_ERRTABENT(FDT_ERR_BADSTATE),
  32
  33         FDT_ERRTABENT(FDT_ERR_TRUNCATED),
  34         FDT_ERRTABENT(FDT_ERR_BADMAGIC),
  35         FDT_ERRTABENT(FDT_ERR_BADVERSION),
  36         FDT_ERRTABENT(FDT_ERR_BADSTRUCTURE),
  37         FDT_ERRTABENT(FDT_ERR_BADLAYOUT),
  38 };
  39 #define FDT_ERRTABSIZE  (sizeof(fdt_errtable) / sizeof(fdt_errtable[0]))
  40
  41 const char *fdt_strerror(int errval)
  42 {
  43         if (errval > 0)
  44                 return "<valid offset/length>";
  45         else if (errval == 0)
  46                 return "<no error>";
  47         else if (errval > -FDT_ERRTABSIZE) {
  48                 const char *s = fdt_errtable[-errval].str;
  49
  50                 if (s)
  51                         return s;
  52         }
  53
  54         return "<unknown error>";
  55 }