1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3
4# Kselftest frmework requirement - SKIP code is 4.
5ksft_skip=4
6
7ensure_write_succ()
8{
9	file=$1
10	content=$2
11	reason=$3
12
13	if ! echo "$content" > "$file"
14	then
15		echo "writing $content to $file failed"
16		echo "expected success because $reason"
17		exit 1
18	fi
19}
20
21ensure_write_fail()
22{
23	file=$1
24	content=$2
25	reason=$3
26
27	if (echo "$content" > "$file") 2> /dev/null
28	then
29		echo "writing $content to $file succeed ($fail_reason)"
30		echo "expected failure because $reason"
31		exit 1
32	fi
33}
34
35ensure_dir()
36{
37	dir=$1
38	to_ensure=$2
39	if [ "$to_ensure" = "exist" ] && [ ! -d "$dir" ]
40	then
41		echo "$dir dir is expected but not found"
42		exit 1
43	elif [ "$to_ensure" = "not_exist" ] && [ -d "$dir" ]
44	then
45		echo "$dir dir is not expected but found"
46		exit 1
47	fi
48}
49
50ensure_file()
51{
52	file=$1
53	to_ensure=$2
54	permission=$3
55	if [ "$to_ensure" = "exist" ]
56	then
57		if [ ! -f "$file" ]
58		then
59			echo "$file is expected but not found"
60			exit 1
61		fi
62		perm=$(stat -c "%a" "$file")
63		if [ ! "$perm" = "$permission" ]
64		then
65			echo "$file permission: expected $permission but $perm"
66			exit 1
67		fi
68	elif [ "$to_ensure" = "not_exist" ] && [ -f "$dir" ]
69	then
70		echo "$file is not expected but found"
71		exit 1
72	fi
73}
74
75test_range()
76{
77	range_dir=$1
78	ensure_dir "$range_dir" "exist"
79	ensure_file "$range_dir/min" "exist" 600
80	ensure_file "$range_dir/max" "exist" 600
81}
82
83test_tried_regions()
84{
85	tried_regions_dir=$1
86	ensure_dir "$tried_regions_dir" "exist"
87	ensure_file "$tried_regions_dir/total_bytes" "exist" "400"
88}
89
90test_stats()
91{
92	stats_dir=$1
93	ensure_dir "$stats_dir" "exist"
94	for f in nr_tried sz_tried nr_applied sz_applied qt_exceeds
95	do
96		ensure_file "$stats_dir/$f" "exist" "400"
97	done
98}
99
100test_filter()
101{
102	filter_dir=$1
103	ensure_file "$filter_dir/type" "exist" "600"
104	ensure_write_succ "$filter_dir/type" "anon" "valid input"
105	ensure_write_succ "$filter_dir/type" "memcg" "valid input"
106	ensure_write_succ "$filter_dir/type" "addr" "valid input"
107	ensure_write_fail "$filter_dir/type" "foo" "invalid input"
108	ensure_file "$filter_dir/matching" "exist" "600"
109	ensure_file "$filter_dir/memcg_path" "exist" "600"
110	ensure_file "$filter_dir/addr_start" "exist" "600"
111	ensure_file "$filter_dir/addr_end" "exist" "600"
112}
113
114test_filters()
115{
116	filters_dir=$1
117	ensure_dir "$filters_dir" "exist"
118	ensure_file "$filters_dir/nr_filters" "exist" "600"
119	ensure_write_succ  "$filters_dir/nr_filters" "1" "valid input"
120	test_filter "$filters_dir/0"
121
122	ensure_write_succ  "$filters_dir/nr_filters" "2" "valid input"
123	test_filter "$filters_dir/0"
124	test_filter "$filters_dir/1"
125
126	ensure_write_succ "$filters_dir/nr_filters" "0" "valid input"
127	ensure_dir "$filters_dir/0" "not_exist"
128	ensure_dir "$filters_dir/1" "not_exist"
129}
130
131test_watermarks()
132{
133	watermarks_dir=$1
134	ensure_dir "$watermarks_dir" "exist"
135	ensure_file "$watermarks_dir/metric" "exist" "600"
136	ensure_file "$watermarks_dir/interval_us" "exist" "600"
137	ensure_file "$watermarks_dir/high" "exist" "600"
138	ensure_file "$watermarks_dir/mid" "exist" "600"
139	ensure_file "$watermarks_dir/low" "exist" "600"
140}
141
142test_weights()
143{
144	weights_dir=$1
145	ensure_dir "$weights_dir" "exist"
146	ensure_file "$weights_dir/sz_permil" "exist" "600"
147	ensure_file "$weights_dir/nr_accesses_permil" "exist" "600"
148	ensure_file "$weights_dir/age_permil" "exist" "600"
149}
150
151test_quotas()
152{
153	quotas_dir=$1
154	ensure_dir "$quotas_dir" "exist"
155	ensure_file "$quotas_dir/ms" "exist" 600
156	ensure_file "$quotas_dir/bytes" "exist" 600
157	ensure_file "$quotas_dir/reset_interval_ms" "exist" 600
158	test_weights "$quotas_dir/weights"
159}
160
161test_access_pattern()
162{
163	access_pattern_dir=$1
164	ensure_dir "$access_pattern_dir" "exist"
165	test_range "$access_pattern_dir/age"
166	test_range "$access_pattern_dir/nr_accesses"
167	test_range "$access_pattern_dir/sz"
168}
169
170test_scheme()
171{
172	scheme_dir=$1
173	ensure_dir "$scheme_dir" "exist"
174	ensure_file "$scheme_dir/action" "exist" "600"
175	test_access_pattern "$scheme_dir/access_pattern"
176	test_quotas "$scheme_dir/quotas"
177	test_watermarks "$scheme_dir/watermarks"
178	test_filters "$scheme_dir/filters"
179	test_stats "$scheme_dir/stats"
180	test_tried_regions "$scheme_dir/tried_regions"
181}
182
183test_schemes()
184{
185	schemes_dir=$1
186	ensure_dir "$schemes_dir" "exist"
187	ensure_file "$schemes_dir/nr_schemes" "exist" 600
188
189	ensure_write_succ  "$schemes_dir/nr_schemes" "1" "valid input"
190	test_scheme "$schemes_dir/0"
191
192	ensure_write_succ  "$schemes_dir/nr_schemes" "2" "valid input"
193	test_scheme "$schemes_dir/0"
194	test_scheme "$schemes_dir/1"
195
196	ensure_write_succ "$schemes_dir/nr_schemes" "0" "valid input"
197	ensure_dir "$schemes_dir/0" "not_exist"
198	ensure_dir "$schemes_dir/1" "not_exist"
199}
200
201test_region()
202{
203	region_dir=$1
204	ensure_dir "$region_dir" "exist"
205	ensure_file "$region_dir/start" "exist" 600
206	ensure_file "$region_dir/end" "exist" 600
207}
208
209test_regions()
210{
211	regions_dir=$1
212	ensure_dir "$regions_dir" "exist"
213	ensure_file "$regions_dir/nr_regions" "exist" 600
214
215	ensure_write_succ  "$regions_dir/nr_regions" "1" "valid input"
216	test_region "$regions_dir/0"
217
218	ensure_write_succ  "$regions_dir/nr_regions" "2" "valid input"
219	test_region "$regions_dir/0"
220	test_region "$regions_dir/1"
221
222	ensure_write_succ "$regions_dir/nr_regions" "0" "valid input"
223	ensure_dir "$regions_dir/0" "not_exist"
224	ensure_dir "$regions_dir/1" "not_exist"
225}
226
227test_target()
228{
229	target_dir=$1
230	ensure_dir "$target_dir" "exist"
231	ensure_file "$target_dir/pid_target" "exist" "600"
232	test_regions "$target_dir/regions"
233}
234
235test_targets()
236{
237	targets_dir=$1
238	ensure_dir "$targets_dir" "exist"
239	ensure_file "$targets_dir/nr_targets" "exist" 600
240
241	ensure_write_succ  "$targets_dir/nr_targets" "1" "valid input"
242	test_target "$targets_dir/0"
243
244	ensure_write_succ  "$targets_dir/nr_targets" "2" "valid input"
245	test_target "$targets_dir/0"
246	test_target "$targets_dir/1"
247
248	ensure_write_succ "$targets_dir/nr_targets" "0" "valid input"
249	ensure_dir "$targets_dir/0" "not_exist"
250	ensure_dir "$targets_dir/1" "not_exist"
251}
252
253test_intervals()
254{
255	intervals_dir=$1
256	ensure_dir "$intervals_dir" "exist"
257	ensure_file "$intervals_dir/aggr_us" "exist" "600"
258	ensure_file "$intervals_dir/sample_us" "exist" "600"
259	ensure_file "$intervals_dir/update_us" "exist" "600"
260}
261
262test_monitoring_attrs()
263{
264	monitoring_attrs_dir=$1
265	ensure_dir "$monitoring_attrs_dir" "exist"
266	test_intervals "$monitoring_attrs_dir/intervals"
267	test_range "$monitoring_attrs_dir/nr_regions"
268}
269
270test_context()
271{
272	context_dir=$1
273	ensure_dir "$context_dir" "exist"
274	ensure_file "$context_dir/avail_operations" "exit" 400
275	ensure_file "$context_dir/operations" "exist" 600
276	test_monitoring_attrs "$context_dir/monitoring_attrs"
277	test_targets "$context_dir/targets"
278	test_schemes "$context_dir/schemes"
279}
280
281test_contexts()
282{
283	contexts_dir=$1
284	ensure_dir "$contexts_dir" "exist"
285	ensure_file "$contexts_dir/nr_contexts" "exist" 600
286
287	ensure_write_succ  "$contexts_dir/nr_contexts" "1" "valid input"
288	test_context "$contexts_dir/0"
289
290	ensure_write_fail "$contexts_dir/nr_contexts" "2" "only 0/1 are supported"
291	test_context "$contexts_dir/0"
292
293	ensure_write_succ "$contexts_dir/nr_contexts" "0" "valid input"
294	ensure_dir "$contexts_dir/0" "not_exist"
295}
296
297test_kdamond()
298{
299	kdamond_dir=$1
300	ensure_dir "$kdamond_dir" "exist"
301	ensure_file "$kdamond_dir/state" "exist" "600"
302	ensure_file "$kdamond_dir/pid" "exist" 400
303	test_contexts "$kdamond_dir/contexts"
304}
305
306test_kdamonds()
307{
308	kdamonds_dir=$1
309	ensure_dir "$kdamonds_dir" "exist"
310
311	ensure_file "$kdamonds_dir/nr_kdamonds" "exist" "600"
312
313	ensure_write_succ  "$kdamonds_dir/nr_kdamonds" "1" "valid input"
314	test_kdamond "$kdamonds_dir/0"
315
316	ensure_write_succ  "$kdamonds_dir/nr_kdamonds" "2" "valid input"
317	test_kdamond "$kdamonds_dir/0"
318	test_kdamond "$kdamonds_dir/1"
319
320	ensure_write_succ "$kdamonds_dir/nr_kdamonds" "0" "valid input"
321	ensure_dir "$kdamonds_dir/0" "not_exist"
322	ensure_dir "$kdamonds_dir/1" "not_exist"
323}
324
325test_damon_sysfs()
326{
327	damon_sysfs=$1
328	if [ ! -d "$damon_sysfs" ]
329	then
330		echo "$damon_sysfs not found"
331		exit $ksft_skip
332	fi
333
334	test_kdamonds "$damon_sysfs/kdamonds"
335}
336
337check_dependencies()
338{
339	if [ $EUID -ne 0 ]
340	then
341		echo "Run as root"
342		exit $ksft_skip
343	fi
344}
345
346check_dependencies
347test_damon_sysfs "/sys/kernel/mm/damon/admin"
348