xref: /linux/Documentation/ABI/testing/sysfs-dev (revision ae22a94997b8a03dcb3c922857c203246711f9d4)
1What:		/sys/dev
2Date:		April 2008
3KernelVersion:	2.6.26
4Contact:	Dan Williams <dan.j.williams@intel.com>
5Description:	The /sys/dev tree provides a method to look up the sysfs
6		path for a device using the information returned from
7		stat(2).  There are two directories, 'block' and 'char',
8		beneath /sys/dev containing symbolic links with names of
9		the form "<major>:<minor>".  These links point to the
10		corresponding sysfs path for the given device.
11
12		Example::
13
14		  $ readlink /sys/dev/block/8:32
15		  ../../block/sdc
16
17		Entries in /sys/dev/char and /sys/dev/block will be
18		dynamically created and destroyed as devices enter and
19		leave the system.
20
21Users:		mdadm <linux-raid@vger.kernel.org>
22