mknod.5 (2010 09)

mknod(5) mknod(5)

NAME

mknod.h - header ﬁle of macros for handling device numbers

SYNOPSIS

#include <sys/mknod.h>

DESCRIPTION

The header ﬁle <sys/mknod.h>

deﬁnes macros to create and interpret device identiﬁcation numbers

for use with the

mknod() system call (see mknod(2)).

The use of these macros is architecture-dependent. See the System Administration Manual for your sys-

tem for information on how to select major and minor device numbers.

mknod.h contains the macro

dev_t makedev(int major, int minor)

which packs the major and minor components into a device identiﬁcation number suitable for the dev

argument of

mknod(), and the two macros:

int major(dev_t dev)

int minor(dev_t dev)

which extract the major and minor number components, respectively, from a device identiﬁcation

number, dev .

The macro

MINOR_FORMAT is a printf() speciﬁcation (see printf (3S)) that prints the minor number

in the format best suited to the particular implementation; it is used by the long format of the

ls com-

mand (see ls(1)) to show the minor numbers for device ﬁles.

The base of the number is indicated in the same way as in the C programming language: no leading zero

for decimal, leading zero for octal, and leading

0x for hexadecimal.

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mknod(5) mknod(5) NAME mknod.h - header file of macros for handling device numbers SYNOPSIS #include DESCRIPTION The header file defines macros to create and interpret device identification numbers for use with the mknod() system call (see mknod(2)). The use of these macros is architecture-dependent. See the System Administration Manual for your system for information on how to select major and minor device numbers. mknod.
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(Notes) A (Notes) mA 2 Hewlett-Packard Company −1− HP-UX 11i Version 3: September 2010