2 # SPDX-License-Identifier: BSD-2-Clause
4 # Copyright (c) 2024 Igor Ostapenko <pm@igoro.pro>
6 # Redistribution and use in source and binary forms, with or without
7 # modification, are permitted provided that the following conditions
9 # 1. Redistributions of source code must retain the above copyright
10 # notice, this list of conditions and the following disclaimer.
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28 # Even being is_exclusive="true" this test does not expect a host to spawn
29 # other jails during the test execution.
31 atf_test_case "max_cur" "cleanup"
34 atf_set descr 'Test maximum and current number of child jails'
35 atf_set require.user root
39 if ! which -s jail; then
40 atf_skip "This test requires jail"
42 origin_max=$(sysctl -n security.jail.children.max)
43 origin_cur=$(sysctl -n security.jail.children.cur)
45 # Magic numbers reasoning:
47 # - the test creates three jails: childfree, maxallowed, maxallowed.family
49 # - maxallowed.family wants to set children.max=4
50 # - it means that its parent (maxallowed) should have at least children.max=5
51 # - it makes the origin (parent of maxallowed) provide children.max=6 minimum
53 test $origin_cur -le $origin_max || atf_fail "Abnormal cur=$origin_cur > max=$origin_max."
54 test $((origin_max - origin_cur)) -ge 3 || atf_skip "Not enough child jails are allowed for the test."
55 test $origin_max -ge 6 || atf_skip "Not high enough children.max limit for the test."
57 jail -c name=childfree persist
58 atf_check_equal "$((origin_cur + 1))" "$(sysctl -n security.jail.children.cur)"
59 atf_check_equal "0" "$(jexec childfree sysctl -n security.jail.children.max)"
60 atf_check_equal "0" "$(jexec childfree sysctl -n security.jail.children.cur)"
62 jail -c name=maxallowed children.max=$((origin_max - 1)) persist
63 atf_check_equal "$((origin_cur + 2))" "$(sysctl -n security.jail.children.cur)"
64 atf_check_equal "$((origin_max - 1))" "$(jexec maxallowed sysctl -n security.jail.children.max)"
65 atf_check_equal "0" "$(jexec maxallowed sysctl -n security.jail.children.cur)"
67 jexec maxallowed jail -c name=family children.max=4 persist
68 atf_check_equal "$((origin_cur + 3))" "$(sysctl -n security.jail.children.cur)"
69 atf_check_equal "1" "$(jexec maxallowed sysctl -n security.jail.children.cur)"
70 atf_check_equal "4" "$(jexec maxallowed.family sysctl -n security.jail.children.max)"
71 atf_check_equal "0" "$(jexec maxallowed.family sysctl -n security.jail.children.cur)"
82 atf_add_test_case "max_cur"