diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/bits/errno.h')
-rw-r--r-- | sysdeps/unix/sysv/linux/bits/errno.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/bits/errno.h b/sysdeps/unix/sysv/linux/bits/errno.h new file mode 100644 index 0000000000..f676d35e49 --- /dev/null +++ b/sysdeps/unix/sysv/linux/bits/errno.h @@ -0,0 +1,59 @@ +/* Error constants. Linux specific version. + Copyright (C) 1996, 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifdef _ERRNO_H + +# undef EDOM +# undef ERANGE +# include <linux/errno.h> + +# ifndef __ASSEMBLER__ +/* We now need a declaration of the `errno' variable. */ +extern int errno; + +/* Function to get address of global `errno' variable. */ +extern int *__errno_location __P ((void)) __attribute__ ((__const__)); + +# if defined _LIBC +# ifdef _LIBC_REENTRANT +static inline int +__set_errno (int __err) +{ + return *__errno_location () = errno = __err; +} +# define __set_errno __set_errno +# else /* !_LIBC_REENTRANT */ +# define __set_errno(val) errno = (val) +# endif /* _LIBC_REENTRANT */ +# endif /* _LIBC */ + +# if !defined _LIBC || defined _LIBC_REENTRANT +/* When using threads, errno is a per-thread value. */ +# define errno (*__errno_location ()) +# endif +# endif /* !__ASSEMBLER__ */ +#endif /* _ERRNO_H */ + +#if !defined (_ERRNO_H) && defined (__need_Emath) +/* This is ugly but the kernel header is not clean enough. We must + define only the values EDOM and ERANGE in case __need_Emath is + defined. The value is the same for all Linux ports. */ +# define EDOM 33 /* Math argument out of domain of function. */ +# define ERANGE 34 /* Math result not representable. */ +#endif /* !_ERRNO_H && __need_Emath */ |