Re: [PATCH] futex: mark get_robust_list as deprecated

[Thomas Gleixner <tglx@linutronix.de>]

On Fri, 23 Mar 2012, Kees Cook wrote:

> Notify get_robust_list users that the syscall is going away.

That want's an entry in Documentation/feature-removal-schedule.txt as
well.

That's on top of your previous one, right ?

Thanks,

	tglx
 
> Suggested-by: Thomas Gleixner <tglx@linutronix.de>
> Signed-off-by: Kees Cook <keescook@chromium.org>
> ---
>  kernel/futex.c        |    2 ++
>  kernel/futex_compat.c |    2 ++
>  2 files changed, 4 insertions(+), 0 deletions(-)
> 
> diff --git a/kernel/futex.c b/kernel/futex.c
> index 439440d..545d7a3 100644
> --- a/kernel/futex.c
> +++ b/kernel/futex.c
> @@ -2449,6 +2449,8 @@ SYSCALL_DEFINE3(get_robust_list, int, pid,
>  	if (!futex_cmpxchg_enabled)
>  		return -ENOSYS;
>  
> +	WARN_ONCE(1, "deprecated: get_robust_list will be deleted in 2013.\n");
> +
>  	rcu_read_lock();
>  
>  	ret = -ESRCH;
> diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c
> index a9642d5..83e368b 100644
> --- a/kernel/futex_compat.c
> +++ b/kernel/futex_compat.c
> @@ -142,6 +142,8 @@ compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
>  	if (!futex_cmpxchg_enabled)
>  		return -ENOSYS;
>  
> +	WARN_ONCE(1, "deprecated: get_robust_list will be deleted in 2013.\n");
> +
>  	rcu_read_lock();
>  
>  	ret = -ESRCH;
> -- 
> 1.7.0.4
> 
> -- 
> Kees Cook
> ChromeOS Security
>