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Add a manual page for the makedev(), major(), and minor() macros.

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Taken from FreeBSD. Written by Ed Schouten.
This commit is contained in:
jruoho 2010-12-14 17:09:27 +00:00
parent 4d6cf788fb
commit 9c53985f97
3 changed files with 89 additions and 3 deletions
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11
distrib/sets/lists/comp/mi
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@ -1,4 +1,4 @@
# $NetBSD: mi,v 1.1541 2010/12/13 21:15:30 pooka Exp $
# $NetBSD: mi,v 1.1542 2010/12/14 17:09:27 jruoho Exp $
#
# Note: don't delete entries from here - mark them as "obsolete" instead.
#
@ -7235,7 +7235,9 @@
./usr/share/man/cat3/magic_load.0 comp-c-catman .cat
./usr/share/man/cat3/magic_open.0 comp-c-catman .cat
./usr/share/man/cat3/magic_setflags.0 comp-c-catman .cat
./usr/share/man/cat3/major.0 comp-c-catman .cat
./usr/share/man/cat3/makecontext.0 comp-c-catman .cat
./usr/share/man/cat3/makedev.0 comp-c-catman .cat
./usr/share/man/cat3/malloc.0 comp-c-catman .cat
./usr/share/man/cat3/man.0 comp-mdocml-catman .cat
./usr/share/man/cat3/math.0 comp-c-catman .cat
@ -7290,6 +7292,7 @@
./usr/share/man/cat3/mergesort.0 comp-c-catman .cat
./usr/share/man/cat3/meta.0 comp-c-catman .cat
./usr/share/man/cat3/mi_vector_hash.0 comp-c-catman .cat
./usr/share/man/cat3/minor.0 comp-c-catman .cat
./usr/share/man/cat3/mkdtemp.0 comp-c-catman .cat
./usr/share/man/cat3/mkstemp.0 comp-c-catman .cat
./usr/share/man/cat3/mktemp.0 comp-c-catman .cat
@ -13199,7 +13202,9 @@
./usr/share/man/html3/magic_load.html comp-c-htmlman html
./usr/share/man/html3/magic_open.html comp-c-htmlman html
./usr/share/man/html3/magic_setflags.html comp-c-htmlman html
./usr/share/man/html3/major.html comp-c-htmlman html
./usr/share/man/html3/makecontext.html comp-c-htmlman html
./usr/share/man/html3/makedev.html comp-c-htmlman html
./usr/share/man/html3/malloc.html comp-c-htmlman html
./usr/share/man/html3/man.html comp-mdocml-htmlman html
./usr/share/man/html3/math.html comp-c-htmlman html
@ -13253,6 +13258,7 @@
./usr/share/man/html3/mergesort.html comp-c-htmlman html
./usr/share/man/html3/meta.html comp-c-htmlman html
./usr/share/man/html3/mi_vector_hash.html comp-c-htmlman html
./usr/share/man/html3/minor.html comp-c-htmlman html
./usr/share/man/html3/mkdtemp.html comp-c-htmlman html
./usr/share/man/html3/mkstemp.html comp-c-htmlman html
./usr/share/man/html3/mktemp.html comp-c-htmlman html
@ -19149,7 +19155,9 @@
./usr/share/man/man3/magic_load.3 comp-c-man .man
./usr/share/man/man3/magic_open.3 comp-c-man .man
./usr/share/man/man3/magic_setflags.3 comp-c-man .man
./usr/share/man/man3/major.3 comp-c-man .man
./usr/share/man/man3/makecontext.3 comp-c-man .man
./usr/share/man/man3/makedev.3 comp-c-man .man
./usr/share/man/man3/malloc.3 comp-c-man .man
./usr/share/man/man3/man.3 comp-mdocml-man .man
./usr/share/man/man3/math.3 comp-c-man .man
@ -19204,6 +19212,7 @@
./usr/share/man/man3/mergesort.3 comp-c-man .man
./usr/share/man/man3/meta.3 comp-c-man .man
./usr/share/man/man3/mi_vector_hash.3 comp-c-man .man
./usr/share/man/man3/minor.3 comp-c-man .man
./usr/share/man/man3/mkdtemp.3 comp-c-man .man
./usr/share/man/man3/mkstemp.3 comp-c-man .man
./usr/share/man/man3/mktemp.3 comp-c-man .man

6
share/man/man3/Makefile
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@ -1,4 +1,4 @@
# $NetBSD: Makefile,v 1.57 2010/10/24 06:57:04 jruoho Exp $
# $NetBSD: Makefile,v 1.58 2010/12/14 17:09:27 jruoho Exp $
# @(#)Makefile 8.2 (Berkeley) 12/13/93
MAN= _DIAGASSERT.3 __CONCAT.3 __UNCONST.3 CMSG_DATA.3 \
@ -6,7 +6,7 @@ MAN= _DIAGASSERT.3 __CONCAT.3 __UNCONST.3 CMSG_DATA.3 \
dlfcn.3 dl_iterate_phdr.3 end.3 \
fast_divide32.3 ffs32.3 gcq.3 \
ilog2.3 intro.3 inttypes.3 iso646.3 \
offsetof.3 queue.3 rbtree.3 sigevent.3 \
makedev.3 offsetof.3 queue.3 rbtree.3 sigevent.3 \
stdarg.3 stdbool.3 stddef.3 stdint.3 stdlib.3 sysexits.3 \
tgmath.3 timeradd.3 timeval.3 tree.3 types.3 varargs.3
@ -35,6 +35,8 @@ MLINKS+=fast_divide32.3 fast_divide32_prepare.3 \
MLINKS+=ffs32.3 ffs64.3 \
ffs32.3 fls32.3 \
ffs32.3 fls64.3
MLINKS+=makedev.3 major.3 \
makedev.3 minor.3
MLINKS+=gcq.3 GCQ_INIT.3 \
gcq.3 GCQ_INIT_HEAD.3 \
gcq.3 gcq_init.3 \

75
share/man/man3/makedev.3 Normal file
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@ -0,0 +1,75 @@
.\" $NetBSD: makedev.3,v 1.1 2010/12/14 17:09:27 jruoho Exp $
.\"
.\" Copyright (c) 2008 Ed Schouten <ed@FreeBSD.org>
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $FreeBSD: src/share/man/man3/makedev.3,v 1.2 2008/09/28 20:26:16 ed Exp $
.\"
.Dd December 14, 2010
.Dt MAKEDEV 3
.Os
.Sh NAME
.Nm makedev ,
.Nm major ,
.Nm minor
.Nd device number conversion
.Sh SYNOPSIS
.In sys/types.h
.Ft dev_t
.Fn makedev "int major" "int minor"
.Ft int
.Fn major "dev_t dev"
.Ft int
.Fn minor "dev_t dev"
.Sh DESCRIPTION
The
.Fn makedev
macro allows a unique device number to be generated based on its
.Fa major
and
.Fa minor
number.
The
.Fn major
and
.Fn minor
macros can be used to obtain the original numbers from the device number
.Fa dev .
.Pp
All block and character devices are uniquely
identified by a pair of major and minor numbers.
The major number refers to a certain device class (e.g. disks, TTYs)
while the minor number identifies an instance within the device class.
.Sh RETURN VALUES
The
.Fn major
macro returns a device major number that has a value between 0 and 255.
The
.Fn minor
macro returns a device minor number whose value can span the complete
range of an
.Vt int .
.Sh SEE ALSO
.Xr mknod 2 ,
.Xr devname 3