[Xen-devel] Blktap extended device number support bug

[Christopher Head <chead@xxxxxxxxx>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi,
In xenlinux revision 582, domid_translate_t is redefined from containing
a pair of unsigned shorts to contain an unsigned short and a u32.
Unfortunately, down on lines 772 and 773 of drivers/xen/blktap/blktap.c,
a domid_translate_t is built out of an unsigned long. This of course
doesn't work, because domid_translate_t is now 48 bits long while
unsigned long is only 32. I suggest passing a pointer into the ioctl and
doing a proper user-to-kernel copy.

Also, the userspace tools in xen-3.2-testing also need modifying as they
have their own copy of the struct declaration (and will in any case need
updating to pass a pointer instead of the struct packed into an unsigned
long).

Chris
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.9 (GNU/Linux)
Comment: GnuPT 2.7.2
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iEYEARECAAYFAkhvEq8ACgkQiD2svb/jCb7rOQCfUhWy+k+oJfGnu6tgJKVAdH4m
gccAn0AUoEE5MNJ6BLSVmytt5tHkIXHV
=VvIn
-----END PGP SIGNATURE-----

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel