.\" Automatically generated by Pod::Man 2.28 (Pod::Simple 3.28)
.\"
.\" Standard preamble:
.\" ========================================================================
.de Sp \" Vertical space (when we can't use .PP)
.if t .sp .5v
.if n .sp
..
.de Vb \" Begin verbatim text
.ft CW
.nf
.ne \\$1
..
.de Ve \" End verbatim text
.ft R
.fi
..
.\" Set up some character translations and predefined strings.  \*(-- will
.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
.\" double quote, and \*(R" will give a right double quote.  \*(C+ will
.\" give a nicer C++.  Capital omega is used to do unbreakable dashes and
.\" therefore won't be available.  \*(C` and \*(C' expand to `' in nroff,
.\" nothing in troff, for use with C<>.
.tr \(*W-
.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
.ie n \{\
.    ds -- \(*W-
.    ds PI pi
.    if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
.    if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\"  diablo 12 pitch
.    ds L" ""
.    ds R" ""
.    ds C` ""
.    ds C' ""
'br\}
.el\{\
.    ds -- \|\(em\|
.    ds PI \(*p
.    ds L" ``
.    ds R" ''
.    ds C`
.    ds C'
'br\}
.\"
.\" Escape single quotes in literal strings from groff's Unicode transform.
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\"
.\" If the F register is turned on, we'll generate index entries on stderr for
.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
.\" entries marked with X<> in POD.  Of course, you'll have to process the
.\" output yourself in some meaningful fashion.
.\"
.\" Avoid warning from groff about undefined register 'F'.
.de IX
..
.nr rF 0
.if \n(.g .if rF .nr rF 1
.if (\n(rF:(\n(.g==0)) \{
.    if \nF \{
.        de IX
.        tm Index:\\$1\t\\n%\t"\\$2"
..
.        if !\nF==2 \{
.            nr % 0
.            nr F 2
.        \}
.    \}
.\}
.rr rF
.\"
.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
.\" Fear.  Run.  Save yourself.  No user-serviceable parts.
.    \" fudge factors for nroff and troff
.if n \{\
.    ds #H 0
.    ds #V .8m
.    ds #F .3m
.    ds #[ \f1
.    ds #] \fP
.\}
.if t \{\
.    ds #H ((1u-(\\\\n(.fu%2u))*.13m)
.    ds #V .6m
.    ds #F 0
.    ds #[ \&
.    ds #] \&
.\}
.    \" simple accents for nroff and troff
.if n \{\
.    ds ' \&
.    ds ` \&
.    ds ^ \&
.    ds , \&
.    ds ~ ~
.    ds /
.\}
.if t \{\
.    ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
.    ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
.    ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
.    ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
.    ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
.    ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
.\}
.    \" troff and (daisy-wheel) nroff accents
.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
.ds ae a\h'-(\w'a'u*4/10)'e
.ds Ae A\h'-(\w'A'u*4/10)'E
.    \" corrections for vroff
.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
.    \" for low resolution devices (crt and lpr)
.if \n(.H>23 .if \n(.V>19 \
\{\
.    ds : e
.    ds 8 ss
.    ds o a
.    ds d- d\h'-1'\(ga
.    ds D- D\h'-1'\(hy
.    ds th \o'bp'
.    ds Th \o'LP'
.    ds ae ae
.    ds Ae AE
.\}
.rm #[ #] #H #V #F C
.\" ========================================================================
.\"
.IX Title "Unix::Mknod 3pm"
.TH Unix::Mknod 3pm "2007-12-23" "perl v5.20.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
Unix::Mknod \- Perl extension for mknod, major, minor, and makedev
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 3
\& use Unix::Mknod qw(:all);
\& use File::stat;
\& use Fcntl qw(:mode);
\&
\& $st=stat(\*(Aq/dev/null\*(Aq);
\& $major=major($st\->rdev);
\& $minor=minor($st\->rdev);
\&
\& mknod(\*(Aq/tmp/special\*(Aq, S_IFCHR|0600, makedev($major,$minor+1));
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This module allows access to the device routines \fImajor()\fR/\fIminor()\fR/\fImakedev()\fR
that may or may not be macros in .h files.
.PP
It also allows access to the \f(CWmknod(2)\fR system call.
.SH "FUNCTIONS"
.IX Header "FUNCTIONS"
.ie n .IP "\fImknod($filename, \fI$mode\fI, \f(CI$rdev\fI)\fR" 4
.el .IP "\fImknod($filename, \f(CI$mode\fI, \f(CI$rdev\fI)\fR" 4
.IX Item "mknod($filename, $mode, $rdev)"
Creates a block or character device special file named \fI\f(CI$filename\fI\fR. 
Must be run as a privileged user, usually \fIroot\fR.  Returns 0 on success
and \-1 on failure, like \f(CW\*(C`POSIX::mkfifo\*(C'\fR does.
.ie n .IP "\fI\fI$major\fI = major($rdev)\fR" 4
.el .IP "\fI\f(CI$major\fI = major($rdev)\fR" 4
.IX Item "$major = major($rdev)"
Returns the major number for the device special file as defined by the 
st_rdev field from the \f(CWstat(3)\fR call.
.ie n .IP "\fI\fI$minor\fI = minor($rdev)\fR" 4
.el .IP "\fI\f(CI$minor\fI = minor($rdev)\fR" 4
.IX Item "$minor = minor($rdev)"
Returns the minor number for the device special file as defined by the 
st_rdev field from the \f(CWstat(3)\fR call.
.ie n .IP "\fI\fI$rdev\fI = makedev($major, \f(CI$minor\fI)\fR" 4
.el .IP "\fI\f(CI$rdev\fI = makedev($major, \f(CI$minor\fI)\fR" 4
.IX Item "$rdev = makedev($major, $minor)"
Returns the st_rdev number for the device special file from the \fI\f(CI$major\fI\fR
and \fI\f(CI$minor\fI\fR numbers.
.SH "NOTES"
.IX Header "NOTES"
There are 2 other perl modules that implement the \f(CWmknod(2)\fR system call,
but they have problems working on some platforms.  \f(CW\*(C`Sys::Mknod\*(C'\fR does not
work on \s-1AIX\s0 because it uses the \f(CWsyscall(2)\fR generic system call which
\&\s-1AIX\s0 does not have.  \f(CW\*(C`Mknod\*(C'\fR implements S_IFIFO, which on most platforms
is not implemented in \f(CWmknod(1)\fR, but rather \f(CWmkfifo(1)\fR (which is
implemented in \s-1POSIX\s0 perl module).
.PP
The perl module \f(CW\*(C`File::Stat::Bits\*(C'\fR also implements \fImajor()\fR and \fIminor()\fR (and
a version of \fImakedev()\fR called dev_join).  They are done as a program to
get the bit masks at compile time, but if \fImajor()\fR and \fIminor()\fR are 
implemented as sub routines, the arugment could be something as simple
as an index to a lookup table (and thereby having no decernable relation
to its result).
.SH "BUGS"
.IX Header "BUGS"
Running \f(CW\*(C`make test\*(C'\fR as non root will not truly test the functions, as in
most \s-1UNIX\s0 like OSes, \f(CWmknod(2)\fR needs to be invoked by a privelaged user, 
usually \fIroot\fR.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\f(CW$ERRNO\fR or \f(CW$!\fR for the specific error message.
.PP
File::Stat::Bits, Mknod, \s-1POSIX\s0, Sys::Mknod
.PP
\&\f(CWmajor(9)\fR, \f(CWminor(9)\fR, \f(CWmkfifo(1)\fR, \f(CWmknod(8)\fR
.PP
ftp://ftp\-dev.cites.uiuc.edu/pub/Unix\-Mknod
.SH "AUTHOR"
.IX Header "AUTHOR"
Jim Pirzyk, <pirzyk@uiuc.edu>
.SH "COPYRIGHT AND LICENSE"
.IX Header "COPYRIGHT AND LICENSE"
Copyright (c) 2005\-2008 University of Illinois Board of Trustees
All rights reserved.
.PP
Developed by: Campus Information Technologies and Educational Services,
              University of Illinois at Urbana-Champaign
.PP
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
``Software''), to deal with the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
.PP
* Redistributions of source code must retain the above copyright
  notice, this list of conditions and the following disclaimers.
.PP
* Redistributions in binary form must reproduce the above copyright
  notice, this list of conditions and the following disclaimers in the
  documentation and/or other materials provided with the distribution.
.PP
* Neither the names of Campus Information Technologies and Educational
  Services, University of Illinois at Urbana-Champaign, nor the names
  of its contributors may be used to endorse or promote products derived
  from this Software without specific prior written permission.
.PP
\&\s-1THE SOFTWARE IS PROVIDED\s0 ``\s-1AS IS\s0'', \s-1WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR
ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
OR THE USE OR OTHER DEALINGS WITH THE SOFTWARE.\s0