linux-kernel - [RFC][PATCH 0/3] exec_update

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Message-ID: <87wo6s3wxd.fsf_-_@x220.int.ebiederm.org>
Date:   Mon, 06 Apr 2020 20:29:50 -0500
From:   ebiederm@...ssion.com (Eric W. Biederman)
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Bernd Edlinger <bernd.edlinger@...mail.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Alexey Gladkov <gladkov.alexey@...il.com>,
        Oleg Nesterov <oleg@...hat.com>,
        Kees Cook <keescook@...omium.org>,
        Jann Horn <jannh@...gle.com>,
        Christian Brauner <christian.brauner@...ntu.com>
Subject: [RFC][PATCH 0/3] exec_update_mutex related cleanups


Linus,

Since you rightly pointed out the code in fs/exec.c is less readable
than it should be right now.  Here is where I currently sit on making
that code static where possible and as obvious as possible.

I will resend this after the merge window for a proper review when
people are less likely to be distrcacted but I figured I might as well
send this out now so I can see if anyone runs screaming from this code.

Eric W. Biederman (3):
      binfmt: Move install_exec_creds after setup_new_exec to match binfmt_elf
      exec: Make unlocking exec_update_mutex explict
      exec: Rename the flag called_exec_mmap point_of_no_return

 arch/x86/ia32/ia32_aout.c |  3 +--
 fs/binfmt_aout.c          |  2 +-
 fs/binfmt_elf_fdpic.c     |  2 +-
 fs/binfmt_flat.c          |  3 +--
 fs/exec.c                 | 18 +++++++++---------
 include/linux/binfmts.h   |  7 +++----
 6 files changed, 16 insertions(+), 19 deletions(-)


Eric