From 9a276f8e1e25b558e893e34f9ae6d64130f87cf6 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 24 Sep 2003 05:05:38 +0000 Subject: Update. * sysdeps/unix/sysv/linux/sys/sysmacros.h: Adjust for larger kernel dev_t size. * sysdeps/unix/sysv/linux/makedev.c: New file. * sysdeps/unix/sysv/linux/Dist: Add makedev.c. * sysdeps/unix/sysv/linux/Makefile [subdir=misc] (sysdep_routines): Add makedev. * sysdeps/unix/sysv/linux/Versions [libc] (GLIBC_2.3.3): Add major, minor, makedev. 2003-09-23 Ulrich Drepper --- sysdeps/unix/sysv/linux/makedev.c | 41 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 sysdeps/unix/sysv/linux/makedev.c (limited to 'sysdeps/unix/sysv/linux/makedev.c') diff --git a/sysdeps/unix/sysv/linux/makedev.c b/sysdeps/unix/sysv/linux/makedev.c new file mode 100644 index 0000000..4708e6d --- /dev/null +++ b/sysdeps/unix/sysv/linux/makedev.c @@ -0,0 +1,41 @@ +/* Definitions of functions to access `dev_t' values. + Copyright (C) 2003 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#include + +unsigned int +major (unsigned long long int dev) +{ + return ((dev >> 8) & 0xfff) | ((unsigned int) (dev >> 32) & ~0xfff); +} + +unsigned int +minor (unsigned long long int dev) +{ + return (dev & 0xff) | ((unsigned int) (dev >> 12) & ~0xff); +} + +unsigned long long int +makedev (unsigned int major, unsigned int minor) +{ + return ((minor & 0xff) | ((major & 0xfff) << 8) + | (((unsigned long long int) (minor & ~0xff)) << 12) + | (((unsigned long long int) (major & ~0xfff)) << 32)); +} -- cgit v1.1