apparmor.d/apparmor.d/ps

# 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>

# When any of the "*ns" parameters is used, the following error will be printed:
#  "Failed name lookup - disconnected path" error=-13 profile="ps" name="".
@{exec_path} = /{usr/,}bin/ps
profile ps @{exec_path} flags=(attach_disconnected) {
  include <abstractions/base>
  include <abstractions/consoles>
  include <abstractions/nameservice-strict>

  # To be able to read the /proc/ files of all processes in the system.
  capability dac_read_search,

  capability sys_ptrace,

  ptrace (read),

  @{exec_path} mr,

  # The "/proc/" dir is needed to avoid the following error:
  #  error: can not access /proc
  # The "stat" file is needed to avoid the following error:
  #  Error, do this: mount -t proc proc /proc
  # The "uptime" file is needed to avoid the following error:
  #  Error: /proc must be mounted

       @{PROC}/ r,

       @{PROC}/@{pids}/stat r,
       @{PROC}/@{pids}/cmdline r,
       @{PROC}/@{pids}/task/ r,
       @{PROC}/@{pids}/task/@{tid}/stat r,
       @{PROC}/@{pids}/task/@{tid}/status r,
       @{PROC}/@{pids}/task/@{tid}/cmdline r,

       @{PROC}/@{pids}/wchan r,
       @{PROC}/@{pids}/attr/current r,
       @{PROC}/@{pids}/cgroup r,
       @{PROC}/@{pids}/statm r,
       @{PROC}/@{pids}/loginuid r,

       @{PROC}/sys/kernel/osrelease r,
       @{PROC}/sys/kernel/pid_max r,
       @{PROC}/tty/drivers r,
       @{PROC}/uptime r,

  @{run}/systemd/sessions/[0-9]* r,

  @{sys}/devices/system/node/ r,
  @{sys}/devices/system/node/node[0-9]*/meminfo r,
  @{sys}/devices/system/node/node[0-9]*/cpumap r,

  # file_inherit
  owner /dev/tty[0-9]* rw,
  owner @{HOME}/.xsession-errors w,

  include if exists <local/ps>
}