makedev(8) [minix man page]

MAKEDEV(8)						      System Manager's Manual							MAKEDEV(8)

NAME

       MAKEDEV, DESCRIBE - make/describe device files

SYNOPSIS

       MAKEDEV [-n] key ...
       DESCRIBE [device] ...

DESCRIPTION

       MAKEDEV may be used to create the device files normally found in the /dev directory.  The key arguments are simply the names of the devices
       you want.  MAKEDEV knows about all supported devices and will create them in the current directory with the proper  owner  and  mode.   For
       many  devices MAKEDEV will not only create the device you want, but also the devices related to it that you will probably want too.  Naming
       one floppy device will create all floppy devices for the same drive for instance.

       Call MAKEDEV without arguments to see a list of keys that it understands.  Then use the -n flag to make the script  echo  the  commands	it
       will execute the next time when you call it without that flag.

       The special key std must be given alone to MAKEDEV.  This key will create all standard devices.

       The command DESCRIBE will give you a one-line description of a given device.  It will by default list all devices in /dev.

SEE ALSO

       mknod(8).

BUGS

       MAKEDEV's eagerness to create devices may cause many "File exists" errors from mknod.

AUTHOR

       Kees J. Bot (kjb@cs.vu.nl)

																	MAKEDEV(8)

MAKEDEV(3)						     Linux Programmer's Manual							MAKEDEV(3)

NAME

       makedev, major, minor - manage a device number

SYNOPSIS

       #define _BSD_SOURCE
       #include <sys/types.h>

       dev_t makedev(int maj, int min);

       int major(dev_t dev);
       int minor(dev_t dev);

DESCRIPTION

       A  device  ID  consists of two parts: a major ID, identifying the class of the device, and a minor ID, identifying a specific instance of a
       device in that class.  A device ID is represented using the type dev_t.

       Given major and minor device IDs, makedev() combines these to produce a device ID, returned as the function result.  This device ID can	be
       given to mknod(2), for example.

       The  major() and minor() functions perform the converse task: given a device ID, they return, respectively, the major and minor components.
       These macros can be useful to, for example, decompose the device IDs in the structure returned by stat(2).

CONFORMING TO

       The makedev() major() and minor() functions are not specified in POSIX.1, but are present on many other systems.

NOTES

       These interfaces are defined as macros.	Since glibc 2.3.3, they have been aliases for three  GNU-specific  functions:  gnu_dev_makedev(3),
       gnu_dev_major(3), and gnu_dev_minor(3).	The latter names are exported, but the traditional names are more portable.

SEE ALSO

       mknod(2), stat(2)

COLOPHON

       This  page is part of release 3.25 of the Linux man-pages project.  A description of the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

Linux								    2008-12-01								MAKEDEV(3)