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    Subject[PATCH v6 01/43] fix compat handling of FICLONERANGE, FIDEDUPERANGE and FS_IOC_FIEMAP
    Date
    From: Al Viro <viro@zeniv.linux.org.uk>

    Unlike FICLONE, all of those take a pointer argument; they do need
    compat_ptr() applied to arg.

    Fixes: d79bdd52d8be ("vfs: wire up compat ioctl for CLONE/CLONE_RANGE")
    Fixes: 54dbc1517237 ("vfs: hoist the btrfs deduplication ioctl to the vfs")
    Fixes: ceac204e1da9 ("fs: make fiemap work from compat_ioctl")
    Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
    Signed-off-by: Arnd Bergmann <arnd@arndb.de>
    ---
    fs/compat_ioctl.c | 3 ++-
    1 file changed, 2 insertions(+), 1 deletion(-)

    diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
    index a7ec2d3dff92..e0226b2138d6 100644
    --- a/fs/compat_ioctl.c
    +++ b/fs/compat_ioctl.c
    @@ -1032,10 +1032,11 @@ COMPAT_SYSCALL_DEFINE3(ioctl, unsigned int, fd, unsigned int, cmd,
    #endif

    case FICLONE:
    + goto do_ioctl;
    case FICLONERANGE:
    case FIDEDUPERANGE:
    case FS_IOC_FIEMAP:
    - goto do_ioctl;
    + goto found_handler;

    case FIBMAP:
    case FIGETBSZ:
    --
    2.20.0
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