Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: compat ioctl32 for /dev/snapshot? | Date | Mon, 4 May 2009 23:58:56 +0200 |
| |
On Monday 04 May 2009, Michael Tokarev wrote: > Is there any reason why 32-bit uswsusp &Friends does not work > on 64bits kernel? > > For one, 32bits s2disk produces the following when trying to > suspend: > > ioctl32(s2disk:4134): Unknown cmd fd(4) cmd(400c330d){t:'3';sz:12} arg(ff853554) on /dev/snapshot > ioctl32(s2disk:4134): Unknown cmd fd(4) cmd(4004330a){t:'3';sz:4} arg(00000805) on /dev/snapshot > > this is coming from: > > error = ioctl(dev, SNAPSHOT_SET_SWAP_AREA, &swap); > if (error && !offset) > error = ioctl(dev, SNAPSHOT_SET_SWAP_FILE, blkdev); > > but I guess (just guess!) that other SNAPSHOT_* operations will > also fail the same way. > > Is there a reason why those are not in compat_ioctl?
The user land hasn't been designed with that in mind. You'd most likely have to modify it too.
Thanks, Rafael
| |