diff options
Diffstat (limited to 'bits/sysmacros.h')
-rw-r--r-- | bits/sysmacros.h | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/bits/sysmacros.h b/bits/sysmacros.h deleted file mode 100644 index 0f0b1aa30a..0000000000 --- a/bits/sysmacros.h +++ /dev/null @@ -1,74 +0,0 @@ -/* Definitions of macros to access `dev_t' values. - Copyright (C) 1996-2017 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 Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#ifndef _BITS_SYSMACROS_H -#define _BITS_SYSMACROS_H 1 - -#ifndef _SYS_SYSMACROS_H -# error "Never include <bits/sysmacros.h> directly; use <sys/sysmacros.h> instead." -#endif - -/* dev_t in glibc is a 64-bit quantity, with 32-bit major and minor numbers. - Our default encoding is MMMM Mmmm mmmM MMmm, where M is a hex digit of - the major number and m is a hex digit of the minor number. This is - downward compatible with legacy systems where dev_t is 16 bits wide, - encoded as MMmm. It is also downward compatible with the Linux kernel, - which (as of 2016) uses 32-bit dev_t, encoded as mmmM MMmm. - - Systems that use an incompatible encoding for dev_t should override this - file in the appropriate sysdeps subdirectory. */ - -#define __SYSMACROS_DECLARE_MAJOR(DECL_TEMPL) \ - DECL_TEMPL(unsigned int, major, (__dev_t __dev)) - -#define __SYSMACROS_DEFINE_MAJOR(DECL_TEMPL) \ - __SYSMACROS_DECLARE_MAJOR (DECL_TEMPL) \ - { \ - unsigned int __major; \ - __major = ((__dev & (__dev_t) 0x00000000000fff00u) >> 8); \ - __major |= ((__dev & (__dev_t) 0xfffff00000000000u) >> 32); \ - return __major; \ - } - -#define __SYSMACROS_DECLARE_MINOR(DECL_TEMPL) \ - DECL_TEMPL(unsigned int, minor, (__dev_t __dev)) - -#define __SYSMACROS_DEFINE_MINOR(DECL_TEMPL) \ - __SYSMACROS_DECLARE_MINOR (DECL_TEMPL) \ - { \ - unsigned int __minor; \ - __minor = ((__dev & (__dev_t) 0x00000000000000ffu) >> 0); \ - __minor |= ((__dev & (__dev_t) 0x00000ffffff00000u) >> 12); \ - return __minor; \ - } - -#define __SYSMACROS_DECLARE_MAKEDEV(DECL_TEMPL) \ - DECL_TEMPL(__dev_t, makedev, (unsigned int __major, unsigned int __minor)) - -#define __SYSMACROS_DEFINE_MAKEDEV(DECL_TEMPL) \ - __SYSMACROS_DECLARE_MAKEDEV (DECL_TEMPL) \ - { \ - __dev_t __dev; \ - __dev = (((__dev_t) (__major & 0x00000fffu)) << 8); \ - __dev |= (((__dev_t) (__major & 0xfffff000u)) << 32); \ - __dev |= (((__dev_t) (__minor & 0x000000ffu)) << 0); \ - __dev |= (((__dev_t) (__minor & 0xffffff00u)) << 12); \ - return __dev; \ - } - -#endif /* bits/sysmacros.h */ |