fs: Move __scm_install_fd() to __receive_fd()
authorKees Cook <keescook@chromium.org>
Wed, 10 Jun 2020 15:20:05 +0000 (08:20 -0700)
committerKees Cook <keescook@chromium.org>
Mon, 13 Jul 2020 18:03:44 +0000 (11:03 -0700)
commit6659061045cc93f609e100b128f30581e5f012e9
tree2624a04d064594b211d8a800521eaa93558c1138
parentc0029de50982c1fb215330a5f9d433cec0cfd8cc
fs: Move __scm_install_fd() to __receive_fd()

In preparation for users of the "install a received file" logic outside
of net/ (pidfd and seccomp), relocate and rename __scm_install_fd() from
net/core/scm.c to __receive_fd() in fs/file.c, and provide a wrapper
named receive_fd_user(), as future patches will change the interface
to __receive_fd().

Additionally add a comment to fd_install() as a counterpoint to how
__receive_fd() interacts with fput().

Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Dmitry Kadashev <dkadashev@gmail.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Sargun Dhillon <sargun@sargun.me>
Cc: Ido Schimmel <idosch@idosch.org>
Cc: Ioana Ciornei <ioana.ciornei@nxp.com>
Cc: linux-fsdevel@vger.kernel.org
Cc: netdev@vger.kernel.org
Reviewed-by: Sargun Dhillon <sargun@sargun.me>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
fs/file.c
include/linux/file.h
include/net/scm.h
net/compat.c
net/core/scm.c