Is Kernel module is the same as a device driver? Post: 302519629

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Operating Systems Linux Fedora Is Kernel module is the same as a device driver? Post 302519629 by Perderabo on Wednesday 4th of May 2011 12:26:27 PM

05-04-2011

Administrator Emeritus

I've known for a long time that device files are in /dev. However, I forget how I came to know that. So remember this thread!! Then when someone asks you 30 years from now how you knew that device files are in /dev you can refer him to this forum. We always appreciate referrals from our members.

So I list the files in /dev. Then, with awk I select only those with field 5 equal to "1," which is the major number. And I sort the output by 1st character (which is driver type -- actually file type but same difference) and field 6 (which is the minor number).

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mknod

mknod(5)							File Formats Manual							  mknod(5)

NAME

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

SYNOPSIS

DESCRIPTION

       The header file defines macros to create and interpret device identification numbers for use with the 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.

       contains the macro

       which packs the major and minor components into a device identification number suitable for the dev argument of and the two macros:

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

       The macro is a 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 command (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 for hexadecimal.

SEE ALSO

       ls(1), mknod(1M), mknod(2), printf(3S).

																	  mknod(5)