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| author |   Arnd Bergmann <arnd@arndb.de> | 2018-09-07 16:49:43 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2019-10-23 17:23:44 +0200 |
| commit | 1207045da5a7c94344e0ea9a9e7495985eef499a (patch) | |
| tree | a7f6028469b50532252bbdd7b71b0f06e293a90e /drivers/video/fbdev/aty/atyfb_base.c | |
| parent | compat_ioctl: use correct compat_ptr() translation in drivers (diff) | |
| download | linux-dev-1207045da5a7c94344e0ea9a9e7495985eef499a.tar.xz linux-dev-1207045da5a7c94344e0ea9a9e7495985eef499a.zip | |
compat_ioctl: move tape handling into drivers
MTIOCPOS and MTIOCGET are incompatible between 32-bit and 64-bit user
space, and traditionally have been translated in fs/compat_ioctl.c.
To get rid of that translation handler, move a corresponding
implementation into each of the four drivers implementing those commands.
The interesting part of that is now in a new linux/mtio.h header that
wraps the existing uapi/linux/mtio.h header and provides an abstraction
to let drivers handle both cases easily. Using an in_compat_syscall()
check, the caller does not have to keep track of whether this was
called through .unlocked_ioctl() or .compat_ioctl().
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: "Kai Mäkisara" <Kai.Makisara@kolumbus.fi>
Cc: linux-scsi@vger.kernel.org
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions