c0029de509
Duplicate the cleanups from commit2618d530dd("net/scm: cleanup scm_detach_fds") into the compat code. Replace open-coded __receive_sock() with a call to the helper. Move the check added in commit1f466e1f15("net: cleanly handle kernel vs user buffers for ->msg_control") to before the compat call, even though it should be impossible for an in-kernel call to also be compat. Correct the int "flags" argument to unsigned int to match fd_install() and similar APIs. Regularize any remaining differences, including a whitespace issue, a checkpatch warning, and add the check from commit6900317f5e("net, scm: fix PaX detected msg_controllen overflow in scm_detach_fds") which fixed an overflow unique to 64-bit. To avoid confusion when comparing the compat handler to the native handler, just include the same check in the compat handler. Cc: Christoph Hellwig <hch@lst.de> Cc: Sargun Dhillon <sargun@sargun.me> Cc: Jakub Kicinski <kuba@kernel.org> Cc: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Acked-by: Christian Brauner <christian.brauner@ubuntu.com> Signed-off-by: Kees Cook <keescook@chromium.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.