man/man8/MAKEDEV.8

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.\" $NetBSD: MAKEDEV.8,v 1.57 2020/04/01 15:33:50 gson Exp $
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.\" This code is derived from software contributed to The NetBSD Foundation
.\" by Thomas Klausner.
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.Dd April  1, 2020
.Dt MAKEDEV 8
.Os
.Sh NAME
.Nm MAKEDEV
.Nd create system and device special files
.Sh SYNOPSIS
.\" Please keep this in sync with MAKEDEV.local.8
.Nm
.Op Fl fMsu
.Op Fl m Ar mknod
.Op Fl p Ar pax
.Op Fl t Ar mtree
.Bro Ar special | device Brc Op Ar ...
.Sh DESCRIPTION
.Nm
is used to create system and device special files.
As arguments it takes the names of known devices, like
.Ar sd0 ,
or of special targets, like
.Pa all
or
.Pa std ,
which create a collection of device special files,
or
.Pa local ,
which invokes
.Xr MAKEDEV.local 8
with the
.Pa all
argument.
.Pp
The script is in
.Pa /dev/MAKEDEV .
Devices are created in the current working directory;
in normal use,
.Nm
should be invoked with
.Pa /dev
as the current working directory.
.Pp
Supported options are:
.Bl -tag -width XmXmknodXX
.It Fl f
Force permissions to be updated on existing devices.
This works only if
.Nm
invokes
.Xr mknod 8 ;
it is not compatible with the
.Fl p ,
.Fl s ,
or
.Fl t
options.
.It Fl M
Create a memory file system, union mounted over the current directory,
to contain the device special files.
The memory file system is created using
.Xr mount_tmpfs 8
or
.Xr mount_mfs 8 ,
in that order of preference.
.Pp
If the
.Fl M
flag is specified more than once, then
.Nm
assumes that it is being invoked from
.Xr init 8
to populate a memory file system for
.Pa /dev .
In this case,
.Nm
will also redirect its output to the system console.
.It Fl m Ar mknod
Force the use of
.Xr mknod 8 ,
and specify the name or path to the
.Xr mknod 8
program.
[Usually, $TOOL_MKNOD or mknod.]
.It Fl p Ar pax
Force the use of
.Xr pax 1 ,
and specify the name or path to the
.Xr pax 1
program.
[Usually, $TOOL_PAX or pax.]
.It Fl s
Generate an
.Xr mtree 8
specfile instead of creating devices.
.It Fl t Ar mtree
Force the use of
.Xr mtree 8 ,
and specify the name or path to the
.Xr mtree 8
program.
[Usually, $TOOL_MTREE or mtree.]
.It Fl u
Don't re-create devices that already exist.
.El
.Pp
.Nm
has several possible methods of creating device nodes:
.Bl -bullet
.It
By invoking the
.Xr mknod 8
command once for each device node.
This is the traditional method, but it is slow because each device node
is created using a new process.
.Pp
The
.Fl m
option forces
.Nm
to use the
.Xr mknod 8
method.
.It
By internally creating a specfile in a format usable by
.Xr mtree 8 ,
and providing the specfile on standard input to a
.Xr pax 1
or
.Xr mtree 8
command, invoked with options that request it to create the device nodes
as well as any necessary subdirectories.
This is much faster than creating device nodes with
.Xr mknod 8 ,
because it requires much fewer processes;
however, it's not compatible with the
.Fl f
option.
.Pp
The
.Fl p
or
.Fl t
options force
.Nm
to use the
.Xr pax 1
or
.Xr mtree 8
methods.
.It
If the
.Fl s
option is specified, then
.Nm
will not create device nodes at all, but will output
a specfile in a format usable by
.Xr mtree 8 .
.El
.Pp
The
.Fl m , Fl p , Fl s ,
and
.Fl t
flags are mutually exclusive.
If none of these flags is specified, then
.Nm
will use
.Xr mtree 8 ,
.Xr pax 1 ,
or
.Xr mknod 8 ,
in that order of preference, depending on which commands
appear to be available and usable.
In normal use, it's expected that
.Xr mtree 8
will be available, so it will be chosen.
If
.Nm
is invoked by
.Xr init 8 ,
it's expected that
.Xr mtree 8
will not be available, but
.Xr pax 1
may be available.
.Pp
The special targets supported on
.Nx
are:
.Pp
.\" @@@SPECIAL@@@
.Bl -tag -width 01234567 -compact
.It Ar all
Makes all known devices, including local devices. Tries to make the 'standard' number of each type.
.It Ar init
A set of devices that is used for MFS /dev by init. May be equal to ``all''.
.It Ar floppy
Devices to be put on install floppies
.It Ar ramdisk
Devices to be put into INSTALL kernel ramdisks.
.It Ar std
Standard devices
.It Ar local
Configuration specific devices
.It Ar lua
Lua device
.It Ar wscons
Make wscons devices
.It Ar usbs
Make USB devices
.El
.Pp
Please note that any hash marks
.Pq Dq #
in the following list of supported device targets must be replaced by
digits when calling
.Nm :
.Pp
.\" @@@DEVICES@@@
.Bl -tag -width 01
.It Tapes :
. Bl -tag -width 0123456789 -compact
. It Ar st#
SCSI tapes, see
.Xr \&st 4
. It Ar wt#
QIC-interfaced (e.g. not SCSI) 3M cartridge tape, see
.Xr \&wt 4
. It Ar ht#
MASSBUS TM03 and TU??, see
.Xr \&vax/ht 4
. It Ar mt#
MSCP tapes (e.g. TU81, TK50), see
.Xr \&vax/mt 4
. It Ar tm#
UNIBUS TM11 and TE10 emulations (e.g. Emulex TC-11), see
.Xr \&vax/tm 4
. It Ar ts#
UNIBUS TS11, see
.Xr \&vax/ts 4
. It Ar ut#
UNIBUS TU45 emulations (e.g. si 9700), see
.Xr \&vax/ut 4
. It Ar uu#
TU58 cassettes on DL11 controller, see
.Xr \&vax/uu 4
. El
.It Disks :
. Bl -tag -width 0123456789 -compact
. It Ar dk#
Wedge disk slices, see
.Xr \&dk 4
. It Ar ccd#
Concatenated disk devices, see
.Xr \&ccd 4
. It Ar cd#
SCSI or ATAPI CD-ROM, see
.Xr \&cd 4
. It Ar cgd#
Cryptographic disk devices, see
.Xr \&cgd 4
. It Ar raid#
RAIDframe disk devices, see
.Xr \&raid 4
. It Ar sd#
SCSI disks, see
.Xr \&sd 4
. It Ar wd#
``winchester'' disk drives (ST506,IDE,ESDI,RLL,...), see
.Xr \&wd 4
. It Ar bmd#
Nereid bank memory disks, see
.Xr \&x68k/bmd 4
. It Ar ed#
IBM PS/2 ESDI disk devices, see
.Xr \&edc 4
. It Ar fd#
``floppy'' disk drives (3 1/2", 5 1/4"), see
.Xr \&amiga/fdc 4 ,
.Xr \&sparc64/fdc 4 ,
.Xr \&x86/fdc 4
. It Ar fss#
Files system snapshot devices, see
.Xr \&fss 4
. It Ar gdrom#
Dreamcast ``gigadisc'' CD-ROM drive, see
.Xr \&dreamcast/gdrom 4
. It Ar hk#
UNIBUS RK06 and RK07, see
.Xr \&vax/hk 4
. It Ar hp#
MASSBUS RM??, see
.Xr \&vax/hp 4
. It Ar ld#
Logical disk devices (e.g., hardware RAID), see
.Xr \&ld 4
. It Ar mcd#
Mitsumi CD-ROM, see
.Xr \&mcd 4
. It Ar md#
Memory pseudo-disk devices, see
.Xr \&md 4
. It Ar ofdisk#
OpenFirmware disk devices
. It Ar ra#
MSCP disks (RA??, RD??)
. It Ar rb#
730 IDC w/ RB80 and/or RB02
. It Ar rd#
HDC9224 RD disks on VS2000, see
.Xr \&hp300/rd 4
. It Ar rl#
UNIBUS RL02, see
.Xr \&vax/rl 4
. It Ar rx#
MSCP floppy disk (RX33/50/...)
. It Ar up#
Other UNIBUS devices (e.g. on Emulex SC-21V controller), see
.Xr \&vax/up 4
. It Ar vnd#
``file'' pseudo-disks, see
.Xr \&vnd 4
. It Ar xbd#
Xen virtual disks, see
.Xr \&xbd 4
. It Ar xd#
Xylogic 753/7053 disks, see
.Xr \&sparc/xd 4
. It Ar xy#
Xylogic 450/451 disks, see
.Xr \&sparc/xy 4
. El
.It Pointing devices :
. Bl -tag -width 0123456789 -compact
. It Ar wsmouse#
wscons mouse events, see
.Xr \&wsmouse 4
. It Ar lms#
Logitech bus mouse, see
.Xr \&i386/lms 4
. It Ar mms#
Microsoft bus mouse, see
.Xr \&dreamcast/mms 4 ,
.Xr \&i386/mms 4
. It Ar qms#
``quadrature mouse'', see
.Xr \&acorn32/qms 4
. It Ar pms#
PS/2 mouse
. It Ar mouse
Mouse (provides events, for X11)
. El
.It Keyboard devices :
. Bl -tag -width 0123456789 -compact
. It Ar wskbd#
wscons keyboard events, see
.Xr \&wskbd 4
. It Ar kbd
Raw keyboard (provides events, for X11), see
.Xr \&sparc/kbd 4 ,
.Xr \&sun2/kbd 4 ,
.Xr \&sun3/kbd 4
. It Ar kbdctl
Keyboard control
. El
.It Terminals/Console ports :
. Bl -tag -width 0123456789 -compact
. It Ar tty[01]#
Standard serial ports, see
.Xr \&tty 4
. It Ar tty0#
SB1250 (``sbscn'') serial ports (sbmips), see
.Xr \&tty 4
. It Ar ttyE#
wscons - Workstation console (``wscons'') glass-tty emulators
. It Ar ttyCZ?
Cyclades-Z multiport serial boards. Each ``unit'' makes 64 ports., see
.Xr \&cz 4
. It Ar ttyCY?
Cyclom-Y multiport serial boards. Each ``unit'' makes 32 ports., see
.Xr \&cy 4
. It Ar ttye#
ITE bitmapped consoles, see
.Xr \&amiga/ite 4
. It Ar ttyv0
pccons
. It Ar ttyC?
NS16550 (``com'') serial ports
. It Ar ttyS#
SA1110 serial port (hpcarm)
. It Ar ttyTX?
TX39 internal serial ports (hpcmips)
. It Ar ttyB?
DEC 3000 ZS8530 (``scc'') serial ports (alpha)
. It Ar ttyA#
Mfc serial ports (amiga)
. It Ar ttyB#
Msc serial ports (amiga)
. It Ar ttyC#
Com style serial ports (DraCo, HyperCom) (amiga) On the DraCo, units 0 and 1 are the built-in ``modem'' and ``mouse'' ports, if configured.
. It Ar ttyA0
8530 Channel A (formerly ser02) (atari)
. It Ar ttyA1
8530 Channel B (formerly mdm02) (atari)
. It Ar ttyB0
UART on first 68901 (formerly mdm01) (atari)
. It Ar ixpcom
IXP12x0 COM ports
. It Ar epcom
EP93xx COM ports
. It Ar plcom
ARM PL01[01] serial ports
. It Ar wmcom
EPOC Windermere COM ports
. It Ar ttyM?
HP200/300 4 port serial mux interface (hp300)
. It Ar ttya
``ttya'' system console (luna68k)
. It Ar ttyb
Second system serial port (luna68k)
. It Ar tty#
Onboard serial ports (mvme68k) On the mvme147 these are: ttyZ1, ttyZ2 and ttyZ3. On the mvme167, and '177: ttyC1, ttyC2 and ttyC3. Note that tty[CZ]0 is grabbed by the console device so is not created by default, see
.Xr \&tty 4
. It Ar dc#
PMAX 4 channel serial interface (kbd, mouse, modem, printer)
. It Ar scc#
82530 serial interface (pmax)
. It Ar ttyZ#
Zilog 8530 (``zstty'') serial ports, see
.Xr \&zstty 4
. It Ar tty[abcd]
Built-in serial ports (sparc)
. It Ar tty#
Z88530 serial controllers (sparc64), see
.Xr \&tty 4
. It Ar ttyh#
SAB82532 serial controllers (sparc64), see
.Xr \&sparc64/sab 4
. It Ar tty[a-j]
Built-in serial ports (sun2, sun3)
. It Ar ttyC?
pccons (arc)
. It Ar dz#
UNIBUS DZ11 and DZ32 (vax), see
.Xr \&emips/dz 4 ,
.Xr \&vax/dz 4
. It Ar dh#
UNIBUS DH11 and emulations (e.g. Able DMAX, Emulex CS-11) (vax), see
.Xr \&vax/dh 4
. It Ar dmf#
UNIBUS DMF32 (vax), see
.Xr \&vax/dmf 4
. It Ar dhu#
UNIBUS DHU11 (vax), see
.Xr \&vax/dhu 4
. It Ar dmz#
UNIBUS DMZ32 (vax), see
.Xr \&vax/dmz 4
. It Ar dl#
UNIBUS DL11 (vax), see
.Xr \&vax/dl 4
. It Ar xencons
Xen virtual console
. El
.It Terminal multiplexors :
. Bl -tag -width 0123456789 -compact
. It Ar dc#
4 channel serial interface (keyboard, mouse, modem, printer)
. It Ar dh#
UNIBUS DH11 and emulations (e.g. Able DMAX, Emulex CS-11), see
.Xr \&vax/dh 4
. It Ar dhu#
UNIBUS DHU11, see
.Xr \&vax/dhu 4
. It Ar dl#
UNIBUS DL11, see
.Xr \&vax/dl 4
. It Ar dmf#
UNIBUS DMF32, see
.Xr \&vax/dmf 4
. It Ar dmz#
UNIBUS DMZ32, see
.Xr \&vax/dmz 4
. It Ar dz#
UNIBUS DZ11 and DZ32, see
.Xr \&emips/dz 4 ,
.Xr \&vax/dz 4
. It Ar scc#
82530 serial interface
. El
.It Call units :
. Bl -tag -width 0123456789 -compact
. It Ar dn#
UNIBUS DN11 and emulations (e.g. Able Quadracall), see
.Xr \&vax/dn 4
. El
.It Pseudo terminals :
. Bl -tag -width 0123456789 -compact
. It Ar ptm
Pty multiplexor device, and pts directory, see
.Xr \&ptm 4
. It Ar pty#
Set of 16 master and slave pseudo terminals, see
.Xr \&pty 4
. It Ar opty
First 16 ptys, to save inodes on install media
. It Ar ipty
First 2 ptys, for install media use only
. El
.It Printers :
. Bl -tag -width 0123456789 -compact
. It Ar arcpp#
Archimedes parallel port
. It Ar lpt#
Stock lp, see
.Xr \&lpt 4 ,
.Xr \&acorn32/lpt 4 ,
.Xr \&mvme68k/lpt 4 ,
.Xr \&x86/lpt 4
. It Ar lpa#
Interruptless lp
. It Ar par#
Amiga motherboard parallel port
. It Ar cpi#
Macintosh Nubus CSI parallel printer card, see
.Xr \&mac68k/cpi 4
. El
.It USB devices :
. Bl -tag -width 0123456789 -compact
. It Ar usb#
USB control devices, see
.Xr \&usb 4
. It Ar uhid#
USB generic HID devices, see
.Xr \&uhid 4
. It Ar ulpt#
USB printer devices, see
.Xr \&ulpt 4
. It Ar ugen#
USB generic devices, see
.Xr \&ugen 4
. It Ar uscanner#
USB scanners, see
.Xr \&uscanner 4
. It Ar ttyHS#
USB Option N.V. modems
. It Ar ttyU#
USB modems, see
.Xr \&ucom 4
. It Ar ttyY#
USB serial adapters
. El
.It Video devices :
. Bl -tag -width 0123456789 -compact
. It Ar bwtwo#
Monochromatic frame buffer, see
.Xr \&sparc/bwtwo 4 ,
.Xr \&sun2/bwtwo 4 ,
.Xr \&sun3/bwtwo 4
. It Ar cgtwo#
8-bit color frame buffer, see
.Xr \&sparc/cgtwo 4 ,
.Xr \&sun3/cgtwo 4
. It Ar cgthree#
8-bit color frame buffer, see
.Xr \&sparc/cgthree 4
. It Ar cgfour#
8-bit color frame buffer, see
.Xr \&sparc/cgfour 4 ,
.Xr \&sun3/cgfour 4
. It Ar cgsix#
Accelerated 8-bit color frame buffer, see
.Xr \&sparc/cgsix 4
. It Ar cgeight#
24-bit color frame buffer, see
.Xr \&sparc/cgeight 4
. It Ar etvme
Tseng et-compatible cards on VME (atari)
. It Ar ik#
UNIBUS interface to Ikonas frame buffer, see
.Xr \&vax/ik 4
. It Ar leo
Circad Leonardo VME-bus true color (atari)
. It Ar ps#
UNIBUS interface to Picture System 2, see
.Xr \&vax/ps 4
. It Ar qv#
QVSS (MicroVAX) display
. It Ar tcx#
Accelerated 8/24-bit color frame buffer, see
.Xr \&sparc/tcx 4
. El
.It Maple bus devices :
. Bl -tag -width 0123456789 -compact
. It Ar maple
Maple bus control devices, see
.Xr \&dreamcast/maple 4
. It Ar mlcd#
Maple bus LCD devices, see
.Xr \&dreamcast/mlcd 4
. It Ar mmem#
Maple bus storage devices, see
.Xr \&dreamcast/mmem 4
. El
.It IEEE1394 bus devices :
. Bl -tag -width 0123456789 -compact
. It Ar fw#
IEEE1394 bus generic node access devices
. It Ar fwmem#
IEEE1394 bus physical memory of the remote node access devices
. El
.It Special purpose devices :
. Bl -tag -width 0123456789 -compact
. It Ar ad#
UNIBUS interface to Data Translation A/D converter, see
.Xr \&vax/ad 4
. It Ar agp#
AGP GART devices, see
.Xr \&agp 4
. It Ar altq
ALTQ control interface, see
.Xr \&altq 4
. It Ar amr#
AMI MegaRaid control device, see
.Xr \&amr 4
. It Ar apm
Power management device, see
.Xr \&i386/apm 4
. It Ar audio#
Audio devices, see
.Xr \&audio 4
. It Ar bell#
OPM bell device (x68k)
. It Ar bktr
Brooktree 848/849/878/879 based TV cards, see
.Xr \&bktr 4
. It Ar bpf
Packet filter, see
.Xr \&bpf 4
. It Ar bthub
Bluetooth Device Hub control interface, see
.Xr \&bthub 4
. It Ar cfs#
Coda file system device
. It Ar ch#
SCSI media changer, see
.Xr \&ch 4
. It Ar cir#
Consumer IR, see
.Xr \&cir 4
. It Ar clockctl
Clock control for non root users, see
.Xr \&clockctl 4
. It Ar cpuctl
CPU control
. It Ar crypto
Hardware crypto access driver, see
.Xr \&crypto 4
. It Ar dmoverio
Hardware-assisted data movers, see
.Xr \&dmoverio 4
. It Ar dpt#
DPT/Adaptec EATA RAID management interface, see
.Xr \&dpt 4
. It Ar dpti#
DPT/Adaptec I2O RAID management interface, see
.Xr \&dpti 4
. It Ar drm#
Direct Rendering Manager interface, see
.Xr \&drm 4
. It Ar dtv#
Digital TV interface, see
.Xr \&dtv 4
. It Ar fb#
PMAX generic framebuffer pseudo-device
. It Ar fd
File descriptors
. It Ar gpiopps#
1PPS signals on GPIO pins, see
.Xr \&gpiopps 4
. It Ar grf#
Graphics frame buffer device, see
.Xr \&amiga/grf 4
. It Ar hdaudio#
High Definition audio control device, see
.Xr \&hdaudio 4
. It Ar hdmicec#
HDMI CEC devices
. It Ar hil
HP300 HIL input devices, see
.Xr \&hil 4
. It Ar icp
ICP-Vortex/Intel RAID control interface, see
.Xr \&icp 4
. It Ar iic#
IIC bus device, see
.Xr \&iic 4
. It Ar io
X86 IOPL access for COMPAT_10, COMPAT_FREEBSD, see
.Xr \&hppa/io 4 ,
.Xr \&i386/io 4
. It Ar iop#
I2O IOP control interface, see
.Xr \&iop 4
. It Ar ipmi#
OpenIPMI compatible interface, see
.Xr \&ipmi 4
. It Ar ipl
IP Filter
. It Ar irframe#
IrDA physical frame, see
.Xr \&irframe 4
. It Ar ite#
Terminal emulator interface to HP300 graphics devices, see
.Xr \&amiga/ite 4
. It Ar joy#
Joystick device, see
.Xr \&joy 4
. It Ar kttcp
Kernel ttcp helper device, see
.Xr \&kttcp 4
. It Ar lockstat
Kernel locking statistics
. It Ar magma#
Magma multiport serial/parallel cards, see
.Xr \&sparc/magma 4
. It Ar midi#
MIDI, see
.Xr \&midi 4
. It Ar mfi#
LSI MegaRAID/MegaSAS control interface, see
.Xr \&mfi 4
. It Ar mlx#
Mylex DAC960 control interface, see
.Xr \&mlx 4
. It Ar mly#
Mylex AcceleRAID/eXtremeRAID control interface, see
.Xr \&mly 4
. It Ar np#
UNIBUS Ethernet co-processor interface, for downloading., see
.Xr \&vax/np 4
. It Ar npf
NPF packet filter
. It Ar nsmb#
SMB requester, see
.Xr \&nsmb 4
. It Ar nvme#
Non-Volatile Memory Host Controller Interface device driver, see
.Xr \&nvme 4
. It Ar nvme#ns*
Non-Volatile Memory namespace
. It Ar nvmm
NetBSD Virtual Machine Monitor, see
.Xr \&nvmm 4
. It Ar openfirm
OpenFirmware accessor
. It Ar pad#
Pseudo-audio device driver, see
.Xr \&pad 4
. It Ar pci#
PCI bus access devices, see
.Xr \&pci 4
. It Ar pf
PF packet filter
. It Ar putter
Pass-to-Userspace Transporter
. It Ar px#
PixelStamp Xserver access, see
.Xr \&px 4
. It Ar qemufwcfg#
QEMU Firmware Configuration, see
.Xr \&qemufwcfg 4
. It Ar radio#
Radio devices, see
.Xr \&radio 4
. It Ar random
Random number generator, see
.Xr \&rnd 4
. It Ar rtc#
RealTimeClock, see
.Xr \&atari/rtc 4 ,
.Xr \&evbppc/rtc 4 ,
.Xr \&hp300/rtc 4
. It Ar scsibus#
SCSI busses, see
.Xr \&scsi 4
. It Ar se#
SCSI Ethernet, see
.Xr \&se 4
. It Ar ses#
SES/SAF-TE SCSI Devices, see
.Xr \&ses 4
. It Ar speaker
PC speaker, see
.Xr \&speaker 4
. It Ar spi#
SPI bus device, see
.Xr \&spi 4
. It Ar sram
Battery backuped memory (x68k)
. It Ar srt#
Source-address based routing, see
.Xr \&srt 4
. It Ar ss#
SCSI scanner, see
.Xr \&ss 4
. It Ar stic#
PixelStamp interface chip
. It Ar sysmon
System Monitoring hardware, see
.Xr \&envsys 4
. It Ar tap#
Virtual Ethernet device, see
.Xr \&tap 4
. It Ar tprof
Task profiler, see
.Xr \&tprof 4
. It Ar tun#
Network tunnel driver, see
.Xr \&tun 4
. It Ar twa
3ware Apache control interface, see
.Xr \&twa 4
. It Ar twe
3ware Escalade control interface, see
.Xr \&twe 4
. It Ar uk#
Unknown SCSI device, see
.Xr \&uk 4
. It Ar veriexec
Veriexec fingerprint loader, see
.Xr \&veriexec 4
. It Ar vhci
Virtual host controller interface
. It Ar video#
Video capture devices, see
.Xr \&video 4
. It Ar view#
Generic interface to graphic displays (Amiga)
. It Ar wsfont#
Console font control, see
.Xr \&wsfont 4
. It Ar wsmux#
wscons event multiplexor, see
.Xr \&wsmux 4
. It Ar xenevt
Xen event interface
. El
.It iSCSI communication devices
. Bl -tag -width 0123456789 -compact
. It Ar iscsi#
ISCSI driver and /sbin/iscsid communication
. El
.It Trusted Computing devices
. Bl -tag -width 0123456789 -compact
. It Ar tpm
Trusted Platform Module, see
.Xr \&tpm 4
. El
.It Debugging and tracing
. Bl -tag -width 0123456789 -compact
. It Ar dtrace
Dynamic tracing framework
. El
.El
.Sh ENVIRONMENT
The following environment variables affect the execution of
.Nm :
.Pp
.Bl -tag -width indent
.It Ev MAKEDEV_AS_LIBRARY
If this is set, then
.Nm
will define several shell functions and then return,
ignoring all its command line options and arguments.
This is used to enable
.Xr MAKEDEV.local 8
to use the shell functions defined in
.Nm .
.El
.Sh FILES
.Bl -tag -width "/dev/MAKEDEV.local" -compact
.It Pa /dev
special device files directory
.It Pa /dev/MAKEDEV
script described in this man page
.It Pa /dev/MAKEDEV.local
script for site-specific devices
.El
.Sh DIAGNOSTICS
If the script reports an error that is difficult to understand,
you can get more debugging output by using
.Dl Ic sh Fl x Ar MAKEDEV Ar argument .
.Sh SEE ALSO
.Xr config 1 ,
.Xr pax 1 ,
.Xr intro 4 ,
.Xr diskless 8 ,
.Xr init 8 ,
.Xr MAKEDEV.local 8 ,
.Xr mknod 8 ,
.Xr mount_mfs 8 ,
.Xr mount_tmpfs 8 ,
.Xr mtree 8
.Sh HISTORY
The
.Nm
command appeared in
.Bx 4.2 .
The
.Fl f ,
.Fl m ,
and
.Fl s
options were added in
.Nx 2.0 .
The
.Fl p ,
.Fl t ,
and
.Fl M
options were added in
.Nx 5.0 .
The ability to be used as a function library was added in
.Nx 5.0 .
.Sh BUGS
The
.Fl f
option is not compatible with the use of
.Xr mtree 8
or
.Xr pax 1 .
.Sh NOTES
Not all devices listed in this manpage are supported on all platforms.
.Pp
This man page is generated automatically from the same sources
as
.Pa /dev/MAKEDEV ,
in which the device files are not always sorted, which may result
in an unusual (non-alphabetical) order.
.Pp
In order to allow a diskless
.Nx
client to obtain its
.Pa /dev
directory from a file server running a foreign operating system,
one of the following techniques may be useful to populate
a directory of device nodes on the foreign server:
.Bl -bullet
.It
If the foreign server is sufficiently similar to
.Nx ,
run
.Nm
in an appropriate directory of the foreign server,
using the
.Fl m
flag to refer to a script that converts from command line
arguments that would be usable with the
.Nx
.Xr mknod 8
command to the equivalent commands for the foreign server.
.It
Run
.Nm
with the
.Fl s
flag to generate an
.Xr mtree 8
specification file; this can be done on any host with a
POSIX-compliant shell and a few widely-available utilities.
Use the
.Xr pax 1
command with the
.Fl w Fl M
flags to convert the
.Xr mtree 8
specification file into an archive
in a format that supports device nodes
(such as
.Ar ustar
format);
this can be done on a
.Nx
host, or can be done in a cross-build environment using
.Sy TOOLDIR Ns Pa /bin/nbpax .
Finally, use appropriate tools on the foreign server
to unpack the archive and create the device nodes.
.El