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authorMilan Broz <mbroz@redhat.com>2006-10-03 01:15:15 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-03 08:04:13 -0700
commitaa129a2247b164173d45da8ad43cca5de9211403 (patch)
tree8adecb4d15d49b0a1fd4b459a24dff22a961d71c /Documentation/sparse.txt
parent70abac6e4f4bfb05a8198e22225f9e066239c7a2 (diff)
[PATCH] dm: support ioctls on mapped devices
Extend the core device-mapper infrastructure to accept arbitrary ioctls on a mapped device provided that it has exactly one target and it is capable of supporting ioctls. [We can't use unlocked_ioctl because we need 'inode': 'file' might be NULL. Is it worth changing this?] Signed-off-by: Milan Broz <mbroz@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com> Arnd Bergmann <arnd@arndb.de> wrote: > Am Wednesday 21 June 2006 21:31 schrieb Alasdair G Kergon: > > static struct block_device_operations dm_blk_dops = { > > .open = dm_blk_open, > > .release = dm_blk_close, > > +.ioctl = dm_blk_ioctl, > > .getgeo = dm_blk_getgeo, > > .owner = THIS_MODULE > > I guess this also needs a ->compat_ioctl method, otherwise it won't > work for ioctl numbers that have a compat_ioctl implementation in the > low-level device driver. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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