1 What: /sys/dev 1 What: /sys/dev
2 Date: April 2008 2 Date: April 2008
3 KernelVersion: 2.6.26 3 KernelVersion: 2.6.26
4 Contact: Dan Williams <dan.j.williams@in 4 Contact: Dan Williams <dan.j.williams@intel.com>
5 Description: The /sys/dev tree provides a m 5 Description: The /sys/dev tree provides a method to look up the sysfs
6 path for a device using the in 6 path for a device using the information returned from
7 stat(2). There are two direct 7 stat(2). There are two directories, 'block' and 'char',
8 beneath /sys/dev containing sy 8 beneath /sys/dev containing symbolic links with names of
9 the form "<major>:<minor>". T 9 the form "<major>:<minor>". These links point to the
10 corresponding sysfs path for t 10 corresponding sysfs path for the given device.
11 11
12 Example:: !! 12 Example:
13 !! 13 $ readlink /sys/dev/block/8:32
14 $ readlink /sys/dev/block/8: !! 14 ../../block/sdc
15 ../../block/sdc <<
16 15
17 Entries in /sys/dev/char and / 16 Entries in /sys/dev/char and /sys/dev/block will be
18 dynamically created and destro 17 dynamically created and destroyed as devices enter and
19 leave the system. 18 leave the system.
20 19
21 Users: mdadm <linux-raid@vger.kernel.o 20 Users: mdadm <linux-raid@vger.kernel.org>
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