[PATCH 27/58] Hide internal __ioctl function [BZ #18822]

[H.J. Lu]

On 9/1/17, H.J. Lu <hjl.tools@gmail.com> wrote:
> Hide internal __ioctl function to allow direct access within libc.so and
> libc.a without using GOT nor PLT.
>
> __GI___ioctl is defined when sysdeps/unix/syscalls.list is used to
> generate ioctl.  Otherwise libc_hidden_def is needed explicitly.
>
> 	[BZ #18822]
> 	* include/sys/ioctl.h (__ioctl): Add libc_hidden_proto.
> 	* misc/ioctl.c (__ioctl): Add libc_hidden_def.
> 	* sysdeps/mach/hurd/ioctl.c (__ioctl): Likewise.
> 	* sysdeps/unix/sysv/linux/aarch64/ioctl.S (__ioctl): Likewise.
> 	* sysdeps/unix/sysv/linux/mips/mips64/n64/ioctl.S (__ioctl):
> 	Likewise.
> 	* sysdeps/unix/sysv/linux/powerpc/ioctl.c (__ioctl): Likewise.
> 	* sysdeps/unix/sysv/linux/tile/tilegx/ioctl.S (__ioctl): Likewise.

Tested with build-many-glibcs.py.  I am checking it in.

-- 
H.J.