# apparmor.d - Full set of apparmor profiles
# Copyright (C) 2019-2021 Mikhail Morfikov
# Copyright (C) 2022-2024 Alexandre Pujol <alexandre@pujol.io>
# SPDX-License-Identifier: GPL-2.0-only

abi <abi/4.0>,

include <tunables/global>

@{exec_path} = @{bin}/ps
@{att} = /att/ps/
profile ps /{,usr/}bin/ps  flags=(attach_disconnected,attach_disconnected.path=@{att},complain) {
  include <abstractions/attached/base>
  include <abstractions/attached/consoles>
  include <abstractions/nameservice-strict>

  capability dac_read_search,

  @{exec_path} mr,

  @{run}/systemd/sessions/* r,

  @{sys}/devices/system/node/ r,
  @{sys}/devices/system/node/node@{int}/cpumap r,
  @{sys}/devices/system/node/node@{int}/meminfo r,

  @{PROC}/ r,
  @{PROC}/@{pids}/ r,
  @{PROC}/@{pids}/attr/current r,
  @{PROC}/@{pids}/cgroup r,
  @{PROC}/@{pids}/cmdline r,
  @{PROC}/@{pids}/environ r,
  @{PROC}/@{pids}/loginuid r,
  @{PROC}/@{pids}/stat r,
  @{PROC}/@{pids}/statm r,
  @{PROC}/@{pids}/status r,
  @{PROC}/@{pids}/task/ r,
  @{PROC}/@{pids}/task/@{tid}/cmdline r,
  @{PROC}/@{pids}/task/@{tid}/stat r,
  @{PROC}/@{pids}/task/@{tid}/status r,
  @{PROC}/@{pids}/wchan r,
  @{PROC}/sys/kernel/osrelease r,
  @{PROC}/sys/kernel/pid_max r,
  @{PROC}/sys/vm/min_free_kbytes r,
  @{PROC}/tty/drivers r,
  @{PROC}/uptime r,

  # file_inherit
  owner @{HOME}/.xsession-errors w,
  owner /dev/tty@{int} rw,

  deny @{user_share_dirs}/gvfs-metadata/* r,

  # While commands like 'ps', 'ip netns identify <pid>', 'ip netns pids foo', etc
  # trigger a 'ptrace trace' denial, they aren't actually tracing other
  # processes. Unfortunately, the kernel overloads trace such that the LSMs are
  # unable to distinguish between tracing other processes and other accesses.
  deny capability perfmon,
  deny capability sys_admin,
  deny capability sys_ptrace,
  deny ptrace trace,
  deny ptrace read,

  include if exists <local/ps>
}

# vim:syntax=apparmor
