On Fri, Aug 19, 2005 at 05:09:06PM +0530, Mukund JB`. wrote:
> To handle it in a similarly in Linux we need to support this driver with
> partitions. There looks a loop hole in the driver.
> I will verify and fix it today.
I suggest having a look at how other drivers use the add_disk call,
since it calls the partition checking code already in the kernel
automatically as far as I can tell. You really shouldn't have to write
any of the partition parsing code at all. You should just have to setup
a structure describing the disk and which major/minor numbers it uses,
and passing that to add_disk and it should deal with the rest.
> Just out of inquisitive ness.
>
> What r u the minor numbers of those zip devices.
> ll /dev/zip
> ll /dev/zip4
They are symlinks:
/dev/zip -> /dev/sda
/dev/zip4 -> /dev/sda4
sda uses major,minor: 8,0
sda1: 8.1
sda2: 8,2
...
sda15: 8,15
sdb: 8,16
sdb1: 8.17
...
sdb15: 8,31
That is how scsi does it.
If your driver supports multiple slots at once, decide how many to
support, or decide to only allow a few partitions, and space them by 8
or 16 (allowing 7 and 15 partitions respectively), and it should be easy
to deal with. sda of course accesses the whole device, while sda1 and
up are for those partitions. I am pretty sure there is standard
partition handling code in the kernel you should be accessing.
> Thanks for ur support.
> I will check with partition support in the driver & update it.
> Let me fix it there and come back.
Len Sorensen
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
| |
 |