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Re: [kernel-hardening] Re: [PATCH 1/2] sysctl: expand use of proc_dointvec_minmax_sysadmin

From Al Viro <viro@ZenIV.linux.org.uk>
Newsgroups linux.kernel
Subject Re: [kernel-hardening] Re: [PATCH 1/2] sysctl: expand use of proc_dointvec_minmax_sysadmin
Date 2016-01-24 02:50 +0100
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References <qTSx5-20U-27@gated-at.bofh.it> <qTSx6-20U-41@gated-at.bofh.it> <qTX3I-5bz-21@gated-at.bofh.it> <qUeQV-3GP-1@gated-at.bofh.it> <qUhON-5Q5-9@gated-at.bofh.it>
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On Sat, Jan 23, 2016 at 07:20:17PM -0600, Eric W. Biederman wrote:

> Yep.  That is about the size of it.  file * used to be passed to the
> sysctl methods but it was removed several years ago because no one was
> using it.

Generally cred would be better...  Alternatively we could eat one more
pointer in task_struct and stash a reference to that sucker there, rather
than adding an explicit argument (again, with cred instead of file).
Not sure...

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[PATCH 0/2] sysctl: allow CLONE_NEWUSER to be disabled  Kees Cook <keescook@chromium.org> - 2016-01-22 23:40 +0100
  [PATCH 1/2] sysctl: expand use of proc_dointvec_minmax_sysadmin Kees Cook <keescook@chromium.org> - 2016-01-22 23:40 +0100
    Re: [PATCH 1/2] sysctl: expand use of proc_dointvec_minmax_sysadmin ebiederm@xmission.com (Eric W. Biederman) - 2016-01-23 04:30 +0100
      Re: [kernel-hardening] Re: [PATCH 1/2] sysctl: expand use of  proc_dointvec_minmax_sysadmin Jann Horn <jann@thejh.net> - 2016-01-23 23:30 +0100
        Re: [kernel-hardening] Re: [PATCH 1/2] sysctl: expand use of proc_dointvec_minmax_sysadmin ebiederm@xmission.com (Eric W. Biederman) - 2016-01-24 02:40 +0100
          Re: [kernel-hardening] Re: [PATCH 1/2] sysctl: expand use of  proc_dointvec_minmax_sysadmin Al Viro <viro@ZenIV.linux.org.uk> - 2016-01-24 02:50 +0100
            Re: [kernel-hardening] Re: [PATCH 1/2] sysctl: expand use of  proc_dointvec_minmax_sysadmin Jann Horn <jann@thejh.net> - 2016-01-24 03:00 +0100
              Re: [kernel-hardening] Re: [PATCH 1/2] sysctl: expand use of proc_dointvec_minmax_sysadmin ebiederm@xmission.com (Eric W. Biederman) - 2016-01-24 07:20 +0100
                Re: [kernel-hardening] Re: [PATCH 1/2] sysctl: expand use of  proc_dointvec_minmax_sysadmin Jann Horn <jann@thejh.net> - 2016-01-24 07:40 +0100
                Re: [kernel-hardening] Re: [PATCH 1/2] sysctl: expand use of proc_dointvec_minmax_sysadmin ebiederm@xmission.com (Eric W. Biederman) - 2016-01-24 08:00 +0100
  Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to be disabled Richard Weinberger <richard@nod.at> - 2016-01-22 23:50 +0100
  Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to be disabled ebiederm@xmission.com (Eric W. Biederman) - 2016-01-23 04:20 +0100
    Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to be disabled Kees Cook <keescook@chromium.org> - 2016-01-24 22:00 +0100
      Re: [kernel-hardening] Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER  to be disabled Serge Hallyn <serge.hallyn@ubuntu.com> - 2016-01-26 08:40 +0100
    Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to be disabled Andy Lutomirski <luto@amacapital.net> - 2016-01-24 23:30 +0100
      Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to be disabled Kees Cook <keescook@chromium.org> - 2016-01-25 20:00 +0100
        Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to be disabled ebiederm@xmission.com (Eric W. Biederman) - 2016-01-25 21:00 +0100
          Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to be disabled Kees Cook <keescook@chromium.org> - 2016-01-25 23:40 +0100
            Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to be disabled Andy Lutomirski <luto@amacapital.net> - 2016-01-26 00:40 +0100
            Re: [kernel-hardening] Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER  to be disabled Daniel Micay <danielmicay@gmail.com> - 2016-01-26 03:30 +0100
            Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to be disabled ebiederm@xmission.com (Eric W. Biederman) - 2016-01-26 06:10 +0100
              Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to be disabled Josh Boyer <jwboyer@fedoraproject.org> - 2016-01-26 15:40 +0100
                Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to be disabled "Austin S. Hemmelgarn" <ahferroin7@gmail.com> - 2016-01-26 15:50 +0100
                Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to be disabled Josh Boyer <jwboyer@fedoraproject.org> - 2016-01-26 16:00 +0100
                Re: [kernel-hardening] Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER  to be disabled Serge Hallyn <serge.hallyn@ubuntu.com> - 2016-01-26 18:30 +0100
                Re: [kernel-hardening] Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to  be disabled Josh Boyer <jwboyer@fedoraproject.org> - 2016-01-26 21:00 +0100
                Re: [kernel-hardening] Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to  be disabled "Austin S. Hemmelgarn" <ahferroin7@gmail.com> - 2016-01-26 21:20 +0100
                Re: [kernel-hardening] Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER  to be disabled Serge Hallyn <serge.hallyn@ubuntu.com> - 2016-01-26 18:20 +0100
                Re: [kernel-hardening] Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to  be disabled "Austin S. Hemmelgarn" <ahferroin7@gmail.com> - 2016-01-26 19:20 +0100
                Re: [kernel-hardening] Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to  be disabled Andy Lutomirski <luto@amacapital.net> - 2016-01-26 19:30 +0100
                Re: [kernel-hardening] Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to  be disabled "Austin S. Hemmelgarn" <ahferroin7@gmail.com> - 2016-01-26 19:50 +0100
                Re: [kernel-hardening] Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to  be disabled Kees Cook <keescook@chromium.org> - 2016-01-27 00:20 +0100
                Re: [kernel-hardening] Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to  be disabled Kees Cook <keescook@chromium.org> - 2016-01-27 00:20 +0100
                Re: [kernel-hardening] Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to be disabled ebiederm@xmission.com (Eric W. Biederman) - 2016-01-27 11:50 +0100
                Re: [kernel-hardening] Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to  be disabled "Austin S. Hemmelgarn" <ahferroin7@gmail.com> - 2016-01-27 13:40 +0100
              Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to be disabled Kees Cook <keescook@chromium.org> - 2016-01-26 17:40 +0100
      Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to be disabled Kees Cook <keescook@chromium.org> - 2016-01-25 20:00 +0100
        Re: [PATCH 0/2] sysctl: allow CLONE_NEWUSER to be disabled Andy Lutomirski <luto@amacapital.net> - 2016-01-25 20:00 +0100

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