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-#!/usr/bin/perl -w
-#
-# udevd-test
-#
-# Copyright (C) Intel Corp, 2004
-#
-# Author: Yin Hu <hu.yin@intel.com>
-#
-# Provides automated testing of the udevd binary.This test script is self-contained.
-# Before you run this script please modify $sysfs to locate your sysfs filesystem,
-# modify $udevsend_bin to locate your udevsend binary,
-# modify $udev_bin to locate dummy udev script,
-# modify $udev_bin2 to locate another dummy udev script ( amplify the execution time for test),
-# modify $log_file to locate where udev script have placed the log file,
-# modify $time_out to decide the time out for events,
-# modify $udev_exe_time to decide the execution time for dummy udev script.
-#
-# Detail information of each test case please refer to the header of corresponding
-# test case function.
-#
-#
-# This program is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License as published by the
-# Free Software Foundation version 2 of the License.
-#
-# This program is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-# General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License along
-# with this program; if not, write to the Free Software Foundation, Inc.,
-# 675 Mass Ave, Cambridge, MA 02139, USA.
-#
-
-use warnings;
-use strict;
-
-# modifiable settings
-my $sysfs = "../sys";
-my $udevd_bin = "../../udevd";
-my $udevsend_bin = "../../udevsend";
-my $udev_bin = "$ENV{'PWD'}/udev-log-script.pl";
-my $udev_bin2 = "$ENV{'PWD'}/udev-log-amplify.pl";
-my $log_file = "/tmp/udev_log.txt";
-my $time_out = 10;
-my $udev_exe_time = 5;
-
-# global variables
-my $test_case = 0;
-
-# common functions
-
-sub restart_daemon {
- my ($udev_binary) = @_;
-
- system("killall udevd");
- system("rm -f $log_file");
- sleep 1;
-
- if (!defined($udev_binary)) {
- $udev_binary = $udev_bin;
- }
-
- $ENV{'UDEV_BIN'} = $udev_binary;
- system("/bin/sh -c $udevd_bin&");
- sleep(1);
-}
-
-sub udevsend {
- # This function prepares corresponding environment variables
- # and then call $udevsend_bin to send event.
-
- my ($seqnum, $devpath, $action, $subsystem, $script) = @_;
-
- %ENV = ();
- $ENV{'DEVPATH'} = $devpath;
- $ENV{'ACTION'} = $action;
- $ENV{'SUBSYSTEM'} = $subsystem;
-
- if ( $seqnum != -1) {
- $ENV{SEQNUM} = $seqnum;
- }
-
- return system("$udevsend_bin $subsystem");
-}
-
-sub check_count_and_time {
- my $event_recv_time;
- my $udev_fork_time;
- my $log_ln_count = 0;
- my $line;
- my @content;
- my @line_items;
- my $diff;
-
- ($event_recv_time) = @_;
-
- print " event receiving time: $event_recv_time\n\n";
-
- open(LOGF, $log_file) || die "Opening file $log_file: $!";
- @content = <LOGF>;
- foreach $line ( @content ) {
- @line_items = split(/,/,$line);
- print " device: $line_items[0], action: $line_items[1] \n";
- print " forking udev time: $line_items[-1]";
- $diff = $line_items[-1] - $event_recv_time;
- print " the delay time is: $diff s \n\n";
- if ( $diff > $time_out+10 ) {
- print " the delay time is: $diff \n";
- print " udevd doesn't act properly. \n";
- exit 1;
- }
- $log_ln_count++;
- }
- close(LOGF);
-
- return $log_ln_count;
-}
-
-sub check_sysfs_device_exist {
- # check if the designated devices exist
- my @dev_list = @_;
- my $dev;
-
- foreach $dev (@dev_list) {
- if (! -e $dev) {
- print "the designated device $dev doesn't exist. please change a device!\n";
- exit 1;
- }
- }
-}
-
-sub show_result {
- my $event_recv_time;
- my $udev_fork_time;
- my $line;
- my @content;
- my @line_items;
- my $diff;
-
- ($event_recv_time) = @_;
-
- print " event receiving time: $event_recv_time\n\n";
-
- open(LOGF, $log_file) || die "Opening file $log_file: $!";
- @content = <LOGF>;
- foreach $line ( @content ) {
- @line_items = split(/,/,$line);
- print " device: $line_items[0], action: $line_items[1] \n";
- print " forking udev time: $line_items[-1]";
- $diff = $line_items[-1] - $event_recv_time;
- print " the delay time is: $diff s \n\n";
- }
- close(LOGF);
-}
-
-sub show_result_tm_out {
- my $event_recv_time;
- my $udev_fork_time;
- my $line;
- my @content;
- my @line_items;
- my $diff;
-
- ($event_recv_time) = @_;
-
- print " event receiving time: $event_recv_time\n\n";
-
- open(LOGF, $log_file) || die "Opening file $log_file: $!";
- @content = <LOGF>;
- foreach $line ( @content ) {
- @line_items = split(/,/,$line);
- print " device: $line_items[0], action: $line_items[1] \n";
- print " forking udev time: $line_items[-1]";
- $diff = $line_items[-1] - $event_recv_time;
- print " the delay time is: $diff s \n\n";
- if ( $diff < $time_out ) {
- print " the delay time is: $diff \n";
- print " udevd doesn't act properly. \n";
- exit 1;
- }
- }
- close(LOGF);
-}
-
-sub show_result_immediate {
- my $event_recv_time;
- my $udev_fork_time;
- my $line;
- my @content;
- my @line_items;
- my $diff;
-
- ($event_recv_time) = @_;
-
- print " event receiving time: $event_recv_time\n\n";
-
- open(LOGF, $log_file) || die "Opening file $log_file: $!";
- @content = <LOGF>;
- foreach $line ( @content ) {
- @line_items = split(/,/,$line);
- print " device: $line_items[0], action: $line_items[1] \n";
- print " forking udev time: $line_items[-1]";
- $diff = $line_items[-1] - $event_recv_time;
- print " the delay time is: $diff s \n\n";
- if ( $diff > $time_out ) {
- print " the delay time is: $diff \n";
- print " udevd doesn't act properly. \n";
- exit 1;
- }
- }
- close(LOGF);
-}
-
-sub check_exe_time {
- my @exe_time;
- my $i = 0;
- my $line;
- my @content;
- my @line_items;
- my $diff;
-
- open(LOGF, $log_file) || die "Opening file $log_file: $!";
- @content = <LOGF>;
- close(LOGF);
- foreach $line ( @content ) {
- @line_items = split(/,/,$line);
- $exe_time[$i] = $line_items[-1];
- $i++;
- }
- $diff = $exe_time[1] - $exe_time[0];
- if ( $diff < $udev_exe_time ) {
- print " there are more than one udev instance for a single device at the same time. \n";
- exit 1;
- } else {
- print " there is just one udev instance for a single device at the same time. \n";
- }
-}
-
-# test case functions
-sub run_no_seq_test {
- print "Test case name: no sequence number test\n";
- print "Test case purpose: check whether udevd forks udev immediately when environment variable SEQNUM is null.\n";
- print "Test expected visible results: \n";
- print " the delay time between event receiving and forking udev for udevd should be negligible, \n";
- print " that is, udev should be forked at once. please notice the following time...\n\n";
-
- my $time;
-
- #
- # add devices event test
- #
- restart_daemon();
-
- # check if devices /block/sda exist
- check_sysfs_device_exist("$sysfs/block/sda");
-
- # log current system date/time
- $time = time();
-
- udevsend(-1, "/block/sda", "add", "block");
-
- # check if execution is successful in time
- sleep 1;
- show_result_immediate($time);
- print " fork udev (add device) at once successfully.\n\n";
-
- #
- # remove devices event test
- #
- system("rm -f $log_file");
-
- # log current system date/time
- $time = time();
-
- udevsend(-1, "/block/sda", "remove", "block");
-
- # check if execution is successful in time
- sleep 1;
- show_result_immediate($time);
- print " fork udev (remove device) at once successfully.\n\n";
- print "this case is ok\n\n";
-}
-
-sub run_normal_seq_test {
- print "Test case name: normal sequence number stress test\n";
- print "Test case purpose: check whether udevd can fork massive udev instances for \n";
- print " massive sequential events successfully. \n";
- print "Test expected visible results: \n";
- print " Populate all the devices in directory $sysfs/class/tty, fork udved to send add/remove \n";
- print " event to udev for each device. \n";
- print " We can see the delay time for each device should be negligible. \n\n";
-
- my @file_list;
- my $file;
- my $seq = 0;
- my $time;
- my $ret_seq;
-
- restart_daemon();
- @file_list = glob "$sysfs/class/tty/*";
-
- # log current system date/time for device add events
- $time = time();
-
- #
- # add devices event test
- #
- print "add device events test: \n";
- foreach $file (@file_list) {
- udevsend($seq, substr($file, length($sysfs), length($file)-length($sysfs)), "add", "tty");
- # check if execution is successful
- if ($? == 0) {
- $seq++;
- } else {
- print "add event: error\n\n";
- exit 1;
- }
- }
-
- # we'd better wait the udev to create all the device for a few seconds
- print " wait for udevd processing about $time_out s... \n\n";
- sleep $time_out + 5;
-
- $ret_seq = check_count_and_time($time);
- if ( $ret_seq != $seq ) {
- print " add event: failed. some device-adding events fail to execute.\n\n";
- exit 1;
- } else {
- print " $seq pieces of device-adding events have executed successfully.\n\n";
- }
-
- # log current system date/time for device remove events
- $time = time();
-
- #
- # remove devices event test
- #
- print "remove device events test: \n";
- restart_daemon();
- @file_list = glob "$sysfs/class/tty/*";
- $seq = 0;
- foreach $file (@file_list) {
- udevsend($seq, substr($file, length($sysfs), length($file)-length($sysfs)), "remove", "tty");
- # check if execution is successful
- if ($? == 0) {
- $seq++;
- } else {
- print "remove event: error\n\n";
- exit 1;
- }
- }
-
- # we'd better wait the udev to create all the device for a few seconds
- print " waiting for udev removing devices (about $time_out s)...\n";
- sleep $time_out + 5;
-
- # show results
- $ret_seq = check_count_and_time($time);
- if ( $ret_seq != $seq ) {
- print " remove event: failed. some device-removing events fail to execute.\n\n";
- exit 1;
- } else {
- print " $seq pieces of device-removing events have executed successfully.\n\n";
- print "this case is ok.\n\n";
- }
-}
-
-sub run_random_seq_test {
- print "Test case name: random sequence number test case,\n";
- print "Test case purpose: check whether udevd can order the events with random sequence number \n";
- print " and fork udev correctly. \n";
- print "Test expected visible results: \n";
- print " We have disordered the events sent to udevd, if udevd can order them correctly, the devices' \n";
- print " add/remove sequence should be tty0, tty1, tty2. \n\n";
-
- my $time;
-
- # check if devices /class/tty/tty0, tty1, tty2 exist
- check_sysfs_device_exist("$sysfs/class/tty/tty0", "$sysfs/class/tty/tty1", "$sysfs/class/tty/tty2");
-
- #
- # add device events test
- #
- print "add device events test: \n";
- restart_daemon();
-
- # log current system date/time for device remove events
- $time = time();
-
- # parameters: 1 sequence number, 2 device, 3 action, 4 subsystem
- udevsend(3, "/class/tty/tty2", "add", "tty");
- udevsend(1, "/class/tty/tty0", "add", "tty");
- udevsend(2, "/class/tty/tty1", "add", "tty");
- print " wait for udevd processing about $time_out s... \n\n";
- sleep $time_out+1;
- show_result_tm_out($time);
-
- #
- # remove device events test
- #
- print "\nremove device events test: \n";
- restart_daemon();
-
- # log current system date/time for device remove events
- $time = time();
-
- udevsend(3, "/class/tty/tty2", "remove", "tty");
- udevsend(2, "/class/tty/tty1", "remove", "tty");
- udevsend(1, "/class/tty/tty0", "remove", "tty");
-
- # show results
- print " wait for udevd processing about $time_out s... \n\n";
- sleep $time_out+1;
- show_result_tm_out($time);
- print "this case is ok.\n\n";
-}
-
-sub run_expected_seq_test {
- print "Test case name: expected sequence number test \n";
- print "Test case purpose: check whether udevd fork udev immediately when the incoming event\n";
- print " is exactly the expected event sequence number.\n";
- print "Test expected visible results:\n";
- print " first, udevd disposes disorder events(sequence number is 3,1,2,5,4,6),\n";
- print " thus after disposed the expected event number for udevd is 7, when incoming event is 7, udevd\n";
- print " should fork udev immediately, the delay time should be negligible. \n";
- print " where: event 7 is (add device /class/tty/tty2) \n\n";
-
- my $time;
-
- # check if devices /class/tty0, tty1, tty2 exist
- check_sysfs_device_exist("$sysfs/class/tty/tty0", "$sysfs/class/tty/tty1", "$sysfs/class/tty/tty2");
-
- restart_daemon();
-
- # parameters: 1 sequence number, 2 device, 3 action, 4 subsystem
- udevsend(3, "/class/tty/tty2", "add", "tty");
- udevsend(1, "/class/tty/tty0", "add", "tty");
- udevsend(2, "/class/tty/tty1", "add", "tty");
- udevsend(5, "/class/tty/tty1", "remove", "tty");
- udevsend(4, "/class/tty/tty0", "remove", "tty");
- udevsend(6, "/class/tty/tty2", "remove", "tty");
-
- print " wait for udevd timing out for disorder events (about $time_out s) \n\n";
- sleep $udev_exe_time + $time_out+1;
- system("rm -f $log_file");
-
- # log current system date/time for device remove events
- $time = time();
-
- # show results
- udevsend(7, "/class/tty/tty2", "add", "tty");
- sleep 1;
- print " event sequence number: 7 \n";
- show_result_immediate($time);
-
- print "this case is ok.\n\n";
-}
-
-sub run_single_instance_test {
- print "Test case name: single instance running for a single device test \n";
- print "Test case purpose: check whether udevd only fork one udev instance for a single\n";
- print " device at the same time. For each event a udev instance is \n";
- print " executed in the background. All further events for the same \n";
- print " device are delayed until the execution is finished. This way \n";
- print " there will never be more than one instance running for a single \n";
- print " device at the same time.\n";
- print "Test expected visible results:\n";
- print " In this test we amplify the execution time of udev (about 5 seconds), first, \n";
- print " we send a add event for device /block/sda, and then we send a remove event, so the \n";
- print " execution of remove event should be delayed until add is finished. \n\n";
-
- my $time;
-
- restart_daemon($udev_bin2);
-
- # check if device exists
- check_sysfs_device_exist("$sysfs/block/sda");
-
- # log current system date/time
- $time = time();
-
- udevsend(-1, "/block/sda", "add", "block");
- udevsend(-1, "/block/sda", "remove", "block");
-
- # show results
- print " wait for udevd processing about $udev_exe_time s... \n\n";
- sleep $udev_exe_time+1;
- show_result_immediate($time);
- check_exe_time();
- print "this case is ok\n\n";
-}
-
-sub run_same_events_test {
- print "Test case name: event sequence number overlap test \n";
- print "Test case purpose: check whether udevd doesn't fork udev untill time out\n";
- print " when encountering a event with sequence number same as the pevious event. \n";
- print "Test expected visible results:\n";
- print " event ( remove device /block/sda ) should be no delay, \n";
- print " event ( add device /class/tty/tty1 ) should be delayed for $time_out s than its previous \n";
- print " event ( remove device /block/sda ) \n\n";
-
- my $time;
-
- restart_daemon();
-
- # check if device exist
- check_sysfs_device_exist("$sysfs/block/sda", "$sysfs/class/tty/tty1");
-
- udevsend(0, "/block/sda", "add", "block");
-
- # log current system date/time
- sleep 1;
- $time = time();
- system("rm -f $log_file");
-
- udevsend(1, "/block/sda", "remove", "block");
- udevsend(1, "/class/tty/tty1", "add", "tty");
-
- # show results
- print " wait for udevd processing about $time_out s... \n\n";
- sleep $time_out+1;
- show_result($time);
- print "this case is ok\n\n";
-}
-
-sub run_missing_seq_test {
- print "Test case name: missing sequence number test \n";
- print "Test case purpose: check whether udevd doesn't fork udev untill time out\n";
- print " when certain event sequence number is missing.\n";
- print "Test expected visible results:\n";
- print " the delay time for event(add device /block/sda) should be about $time_out s.\n\n";
-
- my $time;
-
- restart_daemon();
-
- # check if device exist
- check_sysfs_device_exist("$sysfs/block/sda", "$sysfs/class/tty/tty1");
-
- udevsend(0, "/class/tty/tty1", "add", "tty");
- udevsend(1, "/class/tty/tty1", "remove", "tty");
- sleep 1;
-
- # log current system date/time
- $time = time();
- system("rm -f $log_file");
-
- udevsend(3, "/block/sda", "add", "block");
-
- # show results
- print " wait for udevd processing about $time_out s... \n\n";
- sleep $time_out+1;
- show_result($time);
- print "this case is ok\n\n";
-}
-
-sub run_all_cases_test {
- run_no_seq_test();
- run_normal_seq_test();
- run_random_seq_test();
- run_missing_seq_test();
- run_expected_seq_test();
- run_same_events_test();
- run_single_instance_test();
-}
-
-# main program
-if ($ARGV[0]) {
- $test_case = $ARGV[0];
-
- if ($test_case == 1) {
- run_no_seq_test();
- } elsif ($test_case == 2) {
- run_normal_seq_test();
- } elsif ($test_case == 3) {
- run_random_seq_test();
- } elsif ($test_case == 4) {
- run_missing_seq_test();
- } elsif ($test_case == 5) {
- run_expected_seq_test();
- } elsif ($test_case == 6) {
- run_single_instance_test();
- } elsif ($test_case == 7) {
- run_same_events_test();
- } else {
- run_all_cases_test();
- }
-} else {
- # echo usage
- print "command format: perl udevd-test.pl <case number>\n";
- print " test case:\n";
- print " 1: no event sequence number\n";
- print " 2: sequential event sequence number\n";
- print " 3: random event sequence number\n";
- print " 4: missing event sequence number\n";
- print " 5: the incoming event sequence number is right the expected sequence number\n";
- print " 6: single udev instance on a single device at the same time\n";
- print " 7: test event sequence number overlap\n";
- print " 9: all the cases\n\n";
-}
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