libc/sysdeps/linux/common/bits/errno.h

   1 /* Error constants.  Linux specific version.
   2    Copyright (C) 1996, 1997, 1998, 1999, 2005 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifdef _ERRNO_H
  20
  21 # undef EDOM
  22 # undef EILSEQ
  23 # undef ERANGE
  24 # include <linux/errno.h>
  25
  26 /* Linux has no ENOTSUP error code.  */
  27 # ifndef ENOTSUP
  28 #  define ENOTSUP EOPNOTSUPP
  29 # endif
  30
  31 /* Older Linux versions also had no ECANCELED error code.  */
  32 # ifndef ECANCELED
  33 #  define ECANCELED     125
  34 # endif
  35
  36 /* Support for error codes to support robust mutexes was added later, too.  */
  37 # ifndef EOWNERDEAD
  38 #  define EOWNERDEAD            130
  39 #  define ENOTRECOVERABLE       131
  40 # endif
  41
  42 # ifndef __ASSEMBLER__
  43 /* Function to get address of global `errno' variable.  */
  44 extern int *__errno_location (void) __THROW __attribute__ ((__const__));
  45
  46 #  ifdef __UCLIBC_HAS_THREADS__
  47 /* When using threads, errno is a per-thread value.  */
  48 #   define errno (*__errno_location ())
  49 #  endif
  50 # endif /* !__ASSEMBLER__ */
  51 #endif /* _ERRNO_H */
  52
  53 #if !defined _ERRNO_H && defined __need_Emath
  54 /* This is ugly but the kernel header is not clean enough.  We must
  55    define only the values EDOM, EILSEQ and ERANGE in case __need_Emath is
  56    defined.  */
  57 # define EDOM   33      /* Math argument out of domain of function.  */
  58 # define EILSEQ 84      /* Illegal byte sequence.  */
  59 # define ERANGE 34      /* Math result not representable.  */
  60 #endif /* !_ERRNO_H && __need_Emath */