1e105b8bfSDan WilliamsWhat: /sys/dev 2e105b8bfSDan WilliamsDate: April 2008 3e105b8bfSDan WilliamsKernelVersion: 2.6.26 4e105b8bfSDan WilliamsContact: Dan Williams <dan.j.williams@intel.com> 5e105b8bfSDan WilliamsDescription: The /sys/dev tree provides a method to look up the sysfs 6e105b8bfSDan Williams path for a device using the information returned from 7e105b8bfSDan Williams stat(2). There are two directories, 'block' and 'char', 8e105b8bfSDan Williams beneath /sys/dev containing symbolic links with names of 9e105b8bfSDan Williams the form "<major>:<minor>". These links point to the 10e105b8bfSDan Williams corresponding sysfs path for the given device. 11e105b8bfSDan Williams 12*54a19b4dSMauro Carvalho Chehab Example:: 13*54a19b4dSMauro Carvalho Chehab 14e105b8bfSDan Williams $ readlink /sys/dev/block/8:32 15e105b8bfSDan Williams ../../block/sdc 16e105b8bfSDan Williams 17e105b8bfSDan Williams Entries in /sys/dev/char and /sys/dev/block will be 18e105b8bfSDan Williams dynamically created and destroyed as devices enter and 19e105b8bfSDan Williams leave the system. 20e105b8bfSDan Williams 21e105b8bfSDan WilliamsUsers: mdadm <linux-raid@vger.kernel.org> 22