apparmor.d/profiles/cppw-cpgr

# vim:syntax=apparmor
# ------------------------------------------------------------------
#
#    Copyright (C) 2019-2021 Mikhail Morfikov
#
#    This program is free software; you can redistribute it and/or
#    modify it under the terms of version 2 of the GNU General Public
#    License published by the Free Software Foundation.
#
# ------------------------------------------------------------------

abi <abi/3.0>,

include <tunables/global>

@{exec_path} = /{usr/,}sbin/cp{pw,gr}
profile cppw-cpgr @{exec_path} {
  include <abstractions/base>

  # To set the right permission to the files in the /etc/ dir.
  capability chown,
  capability fsetid,

  @{exec_path} mr,

  /etc/{passwd,shadow,gshadow,group} rw,
  /etc/{passwd,shadow,gshadow,group}.@{pid} rw,
  /etc/{passwd,shadow,gshadow,group}.new rw,
  /etc/passwd.lock  wl -> /etc/passwd.@{pid},
  /etc/shadow.lock  wl -> /etc/shadow.@{pid},
  /etc/gshadow.lock wl -> /etc/gshadow.@{pid},
  /etc/group.lock   wl -> /etc/group.@{pid},

  # A process first uses lckpwdf() to lock the lock file, thereby gaining exclusive rights to
  # modify the /etc/passwd or /etc/shadow password database.
  /etc/.pwd.lock rwk,

  # Source of the files to be replaced
  owner /root/* r,

  include if exists <local/cppw-cpgr>
}