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Operating Systems Linux Fedora Is Kernel module is the same as a device driver? Post 302519639 by Perderabo on Wednesday 4th of May 2011 01:22:56 PM
Old 05-04-2011
Well I didn't really "need" any particular major number. Somehow "1" just came quickly to mind as something to use as an example. Then I was just showing the link betwen the driver and the device file (which is major number). As I said, the drivers are listed in that /usr/include/linux/major.h file so I guess you could say that "maps it out". I really don't know what info you're looking for... Smilie
 

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mknod(1M)						  System Administration Commands						 mknod(1M)

NAME
mknod - make a special file SYNOPSIS
mknod name b major minor mknod name c major minor mknod name p DESCRIPTION
mknod makes a directory entry for a special file. OPTIONS
The following options are supported: b Create a block-type special file. c Create a character-type special file. p Create a FIFO (named pipe). OPERANDS
The following operands are supported: major The major device number. minor The minor device number; can be either decimal or octal. The assignment of major device numbers is specific to each system. You must be the super-user to use this form of the command. name A special file to be created. USAGE
See largefile(5) for the description of the behavior of mknod when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes). ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
ftp(1), in.ftpd(1M), mknod(2), symlink(2), attributes(5), largefile(5) NOTES
If mknod(2) is used to create a device, the major and minor device numbers are always interpreted by the kernel running on that machine. With the advent of physical device naming, it would be preferable to create a symbolic link to the physical name of the device (in the /devices subtree) rather than using mknod. SunOS 5.10 16 Sep 1996 mknod(1M)
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