Query about creating sysfs directory under device driver

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device driver, linux, sysfs, sysfs directory, unresolved, unresolved for weeks

Operating Systems Linux Query about creating sysfs directory under device driver

02-18-2009

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Query about creating sysfs directory under device driver

Hi all,

Currently i am involved in developing a device driver for a custom hardware.

My linux stack already has the sysfs directory structure

/sys/class/hwmon/

My need is that, while loading my device driver i need to create a "xyz" sysfs directory inside hwmon sysfs directory as shown below

/sys/class/hwmon/xyz/

I came across a function called class_create_file call using which we can able to create a sysfs file. But, I don't know about a way to create sysfs directory.

cbalu

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LEARN ABOUT FREEBSD

linsysfs

LINSYSFS(5)						      BSD File Formats Manual						       LINSYSFS(5)

NAME

     linsysfs -- Linux system file system

SYNOPSIS

     linsys	     /compat/linux/sys	     linsysfs	     rw 0 0

DESCRIPTION

     The Linux system file system, or linsysfs, emulates a subset of the Linux sys file system and is required for the complete operation of some
     Linux binaries.

     The linsysfs provides a two-level view of devices.  At the highest level, PCI devices themselves are named, according to their bus, slot and
     function in the system hierarchy.	PCI storage devices are listed in the scsi_host class with a device symlink to the PCI directories of the
     devices.

     Each device node is a directory containing some files and directories:

     host    A place holder for storage host information.

     pci_id  A directory for the pci_id that contains either the device information or another directory structure for a PCI bridge.

     Each host node of scsi_host is a directory containing some files and directories:

     proc_name	The Linux registered driver name for these devices.

     device	A symlink to the PCI device directory.

FILES

     /compat/linux/sys			   The normal mount point for linsysfs.
     /compat/linux/sys/class/scsi_host	   The storage host node.
     /compat/linux/sys/devices/pci0000:00  The PCI device hierarchy node.

EXAMPLES

     The most common usage follows:

	   mount -t linsysfs linsys /compat/linux/sys

     where /compat/linux/sys is a mount point.

SEE ALSO

     nmount(2), unmount(2), linprocfs(5), pseudofs(9)

HISTORY

     The linsysfs driver first appeared in FreeBSD 6.2.

AUTHORS

     The linsysfs driver was derived from linprocfs by Doug Ambrisko.  This manual page was edited by Doug Ambrisko, based on the linprocfs(5)
     manual page by Garrett Wollman.

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								 February 5, 2007							       BSD

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