[dm-devel] Getting mapped device namw

[Nikolay Borisov]

On 07/06/2015 12:20 PM, Gili B wrote:
> hi
> when a user run :
> dmsetup create [device name] ....
> Can a device mapper target find out the device name that the user entered ?

Apparently the name is being associated with a hash_cell object, which
in turn is associated with struct mapped_device in dm_hash_insert
(called from dev_create, which is invoked as part of the create IOCTL).
So presumably if you get an instance of struct mapped_device and then
invoke dm_get_mdptr(md). What you'd get is a pointer to struct hash_cell

> I need it for creating entries in proc for example.
>  
> Thanks
> -gili
>  		 	   		  
> 
> 
> 
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