Re: [PATCH] memfd_secret: use unsigned int rather than long as syscall flags type

On Wed, Mar 31, 2021 at 05:23:45PM +0300, Mike Rapoport wrote:

From: Mike Rapoport rppt@linux.ibm.com

Yuri Norov says:

If parameter size is the same for native and compat ABIs, we may wire a syscall made by compat client to native handler. This is true for unsigned int, but not true for unsigned long or pointer.

That's why I suggest using unsigned int and so avoid creating compat entry point.

Use unsigned int as the type of the flags parameter in memfd_secret() system call.

Signed-off-by: Mike Rapoport rppt@linux.ibm.com

Acked-by: Yury Norov yury.norov@gmail.com