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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /bits/sysmacros.h | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
download | glibc-zack/build-layout-experiment.tar glibc-zack/build-layout-experiment.tar.gz glibc-zack/build-layout-experiment.tar.bz2 glibc-zack/build-layout-experiment.zip |
Prepare for radical source tree reorganization.zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).
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 */ |