1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3# description: Test creation and deletion of trace instances
4
5if [ ! -d instances ] ; then
6    echo "no instance directory with this kernel"
7    exit_unsupported;
8fi
9
10fail() { # mesg
11    rmdir x y z 2>/dev/null
12    echo $1
13    set -e
14    exit_fail
15}
16
17cd instances
18
19# we don't want to fail on error
20set +e
21
22mkdir x
23rmdir x
24result=$?
25
26if [ $result -ne 0 ]; then
27    echo "instance rmdir not supported"
28    exit_unsupported
29fi
30
31instance_slam() {
32    while :; do
33	mkdir x
34	mkdir y
35	mkdir z
36	rmdir x
37	rmdir y
38	rmdir z
39    done 2>/dev/null
40}
41
42instance_slam &
43p1=$!
44echo $p1
45
46instance_slam &
47p2=$!
48echo $p2
49
50instance_slam &
51p3=$!
52echo $p3
53
54instance_slam &
55p4=$!
56echo $p4
57
58instance_slam &
59p5=$!
60echo $p5
61
62ls -lR >/dev/null
63sleep 1
64
65kill -1 $p1
66kill -1 $p2
67kill -1 $p3
68kill -1 $p4
69kill -1 $p5
70
71echo "Wait for processes to finish"
72wait $p1 $p2 $p3 $p4 $p5
73echo "all processes finished, wait for cleanup"
74
75mkdir x y z
76ls x y z
77rmdir x y z
78for d in x y z; do
79        if [ -d $d ]; then
80                fail "instance $d still exists"
81        fi
82done
83
84set -e
85
86exit 0
87