makedev.local(8) [netbsd man page]

MAKEDEV.LOCAL(8)					    BSD System Manager's Manual 					  MAKEDEV.LOCAL(8)

NAME

     MAKEDEV.local -- create site-specific device special files

SYNOPSIS

     MAKEDEV.local [-fMsu] [-m mknod] [-p pax] [-t mtree] {all | site-specific-argument} [...]

DESCRIPTION

     MAKEDEV.local is used to create site-specific device special files.  Each argument may be the word all or a site-specific argument.  By
     default, there are no valid site-specific arguments, and the all argument has no effect; This may be changed by editing the script.

     The script is in /dev/MAKEDEV.local.  Devices are created in the current working directory; in normal use, MAKEDEV.local should be invoked
     with /dev as the current working directory.

     Supported options for MAKEDEV.local are the same as for MAKEDEV(8).

FILES

     /dev		 special device files directory
     /dev/MAKEDEV	 script that invokes MAKEDEV.local with the all argument.
     /dev/MAKEDEV.local  script described in this man page

SEE ALSO

     config(1), intro(4), MAKEDEV(8), mknod(8)

HISTORY

     The MAKEDEV.local command appeared in 4.2BSD.  Handling of the same command line options as MAKEDEV(8), and the use of MAKEDEV(8) as a func-
     tion library, was added in NetBSD 5.0.

NOTES

     The relationship between MAKEDEV.local and MAKEDEV(8) is complex:

     o	 If MAKEDEV(8) is invoked with the all or local argument, then it will invoke MAKEDEV.local as a child process, with options similar to
	 those that were originally passed to MAKEDEV(8), and with the all argument.

     o	 MAKEDEV.local uses shell functions defined in MAKEDEV(8).  This is done by loading MAKEDEV(8) using the shell ``.'' command, with the
	 MAKEDEV_AS_LIBRARY variable set (to inform MAKEDEV(8) that it should behave as a function library, not as an independent program).

BSD
								  August 6, 2011							       BSD

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

NAME

       makedev, major, minor - manage a device number

SYNOPSIS

       #include <sys/sysmacros.h>

       dev_t makedev(unsigned int maj, unsigned int min);

       unsigned int major(dev_t dev);
       unsigned 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).

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).

       +----------------------------+---------------+---------+
       |Interface                   | Attribute     | Value   |
       +----------------------------+---------------+---------+
       |makedev(), major(), minor() | Thread safety | MT-Safe |
       +----------------------------+---------------+---------+
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(),
       gnu_dev_major(), and gnu_dev_minor().  The latter names are exported, but the traditional names are more portable.

       The  BSDs expose the definitions for these macros via <sys/types.h>.  glibc also exposes definitions for these macros from that header file
       if suitable feature test macros are defined, but this is deprecated since glibc 2.25 and will be removed in the future.

SEE ALSO

       mknod(2), stat(2)

COLOPHON

       This page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and  the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

Linux                                                               2017-09-15                                                          MAKEDEV(3)