btrfs: fix send ioctl on 32bit with 64bit kernel

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We pass in a pointer in our send arg struct, this means the struct size
doesn't match with 32bit user space and 64bit kernel space.  Fix this by
adding a compat mode and doing the appropriate conversion.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ move structure to the beginning, next to receive 32bit compat ]
Signed-off-by: David Sterba <dsterba@suse.com>

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Josef Bacik 2017-09-27 10:43:13 -04:00 • committed by David Sterba

parent 2b902dfc89

commit 2351f431f7

3 changed files with 56 additions and 12 deletions

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54

fs/btrfs/ioctl.c

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12

fs/btrfs/send.c

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2

fs/btrfs/send.h

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