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authorUlrich Drepper <drepper@redhat.com>2003-09-24 05:05:38 +0000
committerUlrich Drepper <drepper@redhat.com>2003-09-24 05:05:38 +0000
commit9a276f8e1e25b558e893e34f9ae6d64130f87cf6 (patch)
tree87eb9a27092bf6e7cd5bd520cbca5bca66a6f358 /sysdeps/unix/sysv/linux/makedev.c
parent54ee14b3882bc7f2fcace383ee12da765e86e2ee (diff)
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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  <drepper@redhat.com>
Diffstat (limited to 'sysdeps/unix/sysv/linux/makedev.c')
-rw-r--r--sysdeps/unix/sysv/linux/makedev.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/makedev.c b/sysdeps/unix/sysv/linux/makedev.c
new file mode 100644
index 0000000000..4708e6d419
--- /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 <endian.h>
+#include <sys/sysmacros.h>
+
+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));
+}