move compat handling of tty ioctls to tty_compat_ioctl()

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ioctls that are
	* callable only via tty_ioctl()
	* not driver-specific
	* not demand data structure conversions
	* either always need passing arg as is or always demand compat_ptr()
get intercepted in tty_compat_ioctl() from the very beginning and
redirecter to tty_ioctl().  As the result, their entries in fs/compat_ioctl.c
(some of those had been missing, BTW) got removed, as well as
n_tty_compat_ioctl_helper() (now it's never called with any cmd it would accept).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

...

This commit is contained in:

Al Viro 2018-09-11 19:47:09 -04:00

parent 77021f8bab

commit e21120383f

4 changed files with 76 additions and 71 deletions

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78

drivers/tty/tty_io.c

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16

drivers/tty/tty_ioctl.c

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