Loading...
1#!/usr/bin/perl -w
2#
3# Copyright 2010 - Steven Rostedt <srostedt@redhat.com>, Red Hat Inc.
4# Licensed under the terms of the GNU GPL License version 2
5#
6
7use strict;
8use IPC::Open2;
9use Fcntl qw(F_GETFL F_SETFL O_NONBLOCK);
10use File::Path qw(mkpath);
11use File::Copy qw(cp);
12use FileHandle;
13
14my $VERSION = "0.2";
15
16$| = 1;
17
18my %opt;
19my %repeat_tests;
20my %repeats;
21my %evals;
22
23#default opts
24my %default = (
25 "NUM_TESTS" => 1,
26 "TEST_TYPE" => "build",
27 "BUILD_TYPE" => "randconfig",
28 "MAKE_CMD" => "make",
29 "CLOSE_CONSOLE_SIGNAL" => "INT",
30 "TIMEOUT" => 120,
31 "TMP_DIR" => "/tmp/ktest/\${MACHINE}",
32 "SLEEP_TIME" => 60, # sleep time between tests
33 "BUILD_NOCLEAN" => 0,
34 "REBOOT_ON_ERROR" => 0,
35 "POWEROFF_ON_ERROR" => 0,
36 "REBOOT_ON_SUCCESS" => 1,
37 "POWEROFF_ON_SUCCESS" => 0,
38 "BUILD_OPTIONS" => "",
39 "BISECT_SLEEP_TIME" => 60, # sleep time between bisects
40 "PATCHCHECK_SLEEP_TIME" => 60, # sleep time between patch checks
41 "CLEAR_LOG" => 0,
42 "BISECT_MANUAL" => 0,
43 "BISECT_SKIP" => 1,
44 "BISECT_TRIES" => 1,
45 "MIN_CONFIG_TYPE" => "boot",
46 "SUCCESS_LINE" => "login:",
47 "DETECT_TRIPLE_FAULT" => 1,
48 "NO_INSTALL" => 0,
49 "BOOTED_TIMEOUT" => 1,
50 "DIE_ON_FAILURE" => 1,
51 "SSH_EXEC" => "ssh \$SSH_USER\@\$MACHINE \$SSH_COMMAND",
52 "SCP_TO_TARGET" => "scp \$SRC_FILE \$SSH_USER\@\$MACHINE:\$DST_FILE",
53 "SCP_TO_TARGET_INSTALL" => "\${SCP_TO_TARGET}",
54 "REBOOT" => "ssh \$SSH_USER\@\$MACHINE reboot",
55 "STOP_AFTER_SUCCESS" => 10,
56 "STOP_AFTER_FAILURE" => 60,
57 "STOP_TEST_AFTER" => 600,
58 "MAX_MONITOR_WAIT" => 1800,
59 "GRUB_REBOOT" => "grub2-reboot",
60 "SYSLINUX" => "extlinux",
61 "SYSLINUX_PATH" => "/boot/extlinux",
62
63# required, and we will ask users if they don't have them but we keep the default
64# value something that is common.
65 "REBOOT_TYPE" => "grub",
66 "LOCALVERSION" => "-test",
67 "SSH_USER" => "root",
68 "BUILD_TARGET" => "arch/x86/boot/bzImage",
69 "TARGET_IMAGE" => "/boot/vmlinuz-test",
70
71 "LOG_FILE" => undef,
72 "IGNORE_UNUSED" => 0,
73);
74
75my $ktest_config = "ktest.conf";
76my $version;
77my $have_version = 0;
78my $machine;
79my $last_machine;
80my $ssh_user;
81my $tmpdir;
82my $builddir;
83my $outputdir;
84my $output_config;
85my $test_type;
86my $build_type;
87my $build_options;
88my $final_post_ktest;
89my $pre_ktest;
90my $post_ktest;
91my $pre_test;
92my $post_test;
93my $pre_build;
94my $post_build;
95my $pre_build_die;
96my $post_build_die;
97my $reboot_type;
98my $reboot_script;
99my $power_cycle;
100my $reboot;
101my $reboot_on_error;
102my $switch_to_good;
103my $switch_to_test;
104my $poweroff_on_error;
105my $reboot_on_success;
106my $die_on_failure;
107my $powercycle_after_reboot;
108my $poweroff_after_halt;
109my $max_monitor_wait;
110my $ssh_exec;
111my $scp_to_target;
112my $scp_to_target_install;
113my $power_off;
114my $grub_menu;
115my $last_grub_menu;
116my $grub_file;
117my $grub_number;
118my $grub_reboot;
119my $syslinux;
120my $syslinux_path;
121my $syslinux_label;
122my $target;
123my $make;
124my $pre_install;
125my $post_install;
126my $no_install;
127my $noclean;
128my $minconfig;
129my $start_minconfig;
130my $start_minconfig_defined;
131my $output_minconfig;
132my $minconfig_type;
133my $use_output_minconfig;
134my $warnings_file;
135my $ignore_config;
136my $ignore_errors;
137my $addconfig;
138my $in_bisect = 0;
139my $bisect_bad_commit = "";
140my $reverse_bisect;
141my $bisect_manual;
142my $bisect_skip;
143my $bisect_tries;
144my $config_bisect_good;
145my $bisect_ret_good;
146my $bisect_ret_bad;
147my $bisect_ret_skip;
148my $bisect_ret_abort;
149my $bisect_ret_default;
150my $in_patchcheck = 0;
151my $run_test;
152my $buildlog;
153my $testlog;
154my $dmesg;
155my $monitor_fp;
156my $monitor_pid;
157my $monitor_cnt = 0;
158my $sleep_time;
159my $bisect_sleep_time;
160my $patchcheck_sleep_time;
161my $ignore_warnings;
162my $store_failures;
163my $store_successes;
164my $test_name;
165my $timeout;
166my $booted_timeout;
167my $detect_triplefault;
168my $console;
169my $close_console_signal;
170my $reboot_success_line;
171my $success_line;
172my $stop_after_success;
173my $stop_after_failure;
174my $stop_test_after;
175my $build_target;
176my $target_image;
177my $checkout;
178my $localversion;
179my $iteration = 0;
180my $successes = 0;
181my $stty_orig;
182
183my $bisect_good;
184my $bisect_bad;
185my $bisect_type;
186my $bisect_start;
187my $bisect_replay;
188my $bisect_files;
189my $bisect_reverse;
190my $bisect_check;
191
192my $config_bisect;
193my $config_bisect_type;
194my $config_bisect_check;
195
196my $patchcheck_type;
197my $patchcheck_start;
198my $patchcheck_cherry;
199my $patchcheck_end;
200
201my $build_time;
202my $install_time;
203my $reboot_time;
204my $test_time;
205
206# set when a test is something other that just building or install
207# which would require more options.
208my $buildonly = 1;
209
210# tell build not to worry about warnings, even when WARNINGS_FILE is set
211my $warnings_ok = 0;
212
213# set when creating a new config
214my $newconfig = 0;
215
216my %entered_configs;
217my %config_help;
218my %variable;
219
220# force_config is the list of configs that we force enabled (or disabled)
221# in a .config file. The MIN_CONFIG and ADD_CONFIG configs.
222my %force_config;
223
224# do not force reboots on config problems
225my $no_reboot = 1;
226
227# reboot on success
228my $reboot_success = 0;
229
230my %option_map = (
231 "MACHINE" => \$machine,
232 "SSH_USER" => \$ssh_user,
233 "TMP_DIR" => \$tmpdir,
234 "OUTPUT_DIR" => \$outputdir,
235 "BUILD_DIR" => \$builddir,
236 "TEST_TYPE" => \$test_type,
237 "PRE_KTEST" => \$pre_ktest,
238 "POST_KTEST" => \$post_ktest,
239 "PRE_TEST" => \$pre_test,
240 "POST_TEST" => \$post_test,
241 "BUILD_TYPE" => \$build_type,
242 "BUILD_OPTIONS" => \$build_options,
243 "PRE_BUILD" => \$pre_build,
244 "POST_BUILD" => \$post_build,
245 "PRE_BUILD_DIE" => \$pre_build_die,
246 "POST_BUILD_DIE" => \$post_build_die,
247 "POWER_CYCLE" => \$power_cycle,
248 "REBOOT" => \$reboot,
249 "BUILD_NOCLEAN" => \$noclean,
250 "MIN_CONFIG" => \$minconfig,
251 "OUTPUT_MIN_CONFIG" => \$output_minconfig,
252 "START_MIN_CONFIG" => \$start_minconfig,
253 "MIN_CONFIG_TYPE" => \$minconfig_type,
254 "USE_OUTPUT_MIN_CONFIG" => \$use_output_minconfig,
255 "WARNINGS_FILE" => \$warnings_file,
256 "IGNORE_CONFIG" => \$ignore_config,
257 "TEST" => \$run_test,
258 "ADD_CONFIG" => \$addconfig,
259 "REBOOT_TYPE" => \$reboot_type,
260 "GRUB_MENU" => \$grub_menu,
261 "GRUB_FILE" => \$grub_file,
262 "GRUB_REBOOT" => \$grub_reboot,
263 "SYSLINUX" => \$syslinux,
264 "SYSLINUX_PATH" => \$syslinux_path,
265 "SYSLINUX_LABEL" => \$syslinux_label,
266 "PRE_INSTALL" => \$pre_install,
267 "POST_INSTALL" => \$post_install,
268 "NO_INSTALL" => \$no_install,
269 "REBOOT_SCRIPT" => \$reboot_script,
270 "REBOOT_ON_ERROR" => \$reboot_on_error,
271 "SWITCH_TO_GOOD" => \$switch_to_good,
272 "SWITCH_TO_TEST" => \$switch_to_test,
273 "POWEROFF_ON_ERROR" => \$poweroff_on_error,
274 "REBOOT_ON_SUCCESS" => \$reboot_on_success,
275 "DIE_ON_FAILURE" => \$die_on_failure,
276 "POWER_OFF" => \$power_off,
277 "POWERCYCLE_AFTER_REBOOT" => \$powercycle_after_reboot,
278 "POWEROFF_AFTER_HALT" => \$poweroff_after_halt,
279 "MAX_MONITOR_WAIT" => \$max_monitor_wait,
280 "SLEEP_TIME" => \$sleep_time,
281 "BISECT_SLEEP_TIME" => \$bisect_sleep_time,
282 "PATCHCHECK_SLEEP_TIME" => \$patchcheck_sleep_time,
283 "IGNORE_WARNINGS" => \$ignore_warnings,
284 "IGNORE_ERRORS" => \$ignore_errors,
285 "BISECT_MANUAL" => \$bisect_manual,
286 "BISECT_SKIP" => \$bisect_skip,
287 "BISECT_TRIES" => \$bisect_tries,
288 "CONFIG_BISECT_GOOD" => \$config_bisect_good,
289 "BISECT_RET_GOOD" => \$bisect_ret_good,
290 "BISECT_RET_BAD" => \$bisect_ret_bad,
291 "BISECT_RET_SKIP" => \$bisect_ret_skip,
292 "BISECT_RET_ABORT" => \$bisect_ret_abort,
293 "BISECT_RET_DEFAULT" => \$bisect_ret_default,
294 "STORE_FAILURES" => \$store_failures,
295 "STORE_SUCCESSES" => \$store_successes,
296 "TEST_NAME" => \$test_name,
297 "TIMEOUT" => \$timeout,
298 "BOOTED_TIMEOUT" => \$booted_timeout,
299 "CONSOLE" => \$console,
300 "CLOSE_CONSOLE_SIGNAL" => \$close_console_signal,
301 "DETECT_TRIPLE_FAULT" => \$detect_triplefault,
302 "SUCCESS_LINE" => \$success_line,
303 "REBOOT_SUCCESS_LINE" => \$reboot_success_line,
304 "STOP_AFTER_SUCCESS" => \$stop_after_success,
305 "STOP_AFTER_FAILURE" => \$stop_after_failure,
306 "STOP_TEST_AFTER" => \$stop_test_after,
307 "BUILD_TARGET" => \$build_target,
308 "SSH_EXEC" => \$ssh_exec,
309 "SCP_TO_TARGET" => \$scp_to_target,
310 "SCP_TO_TARGET_INSTALL" => \$scp_to_target_install,
311 "CHECKOUT" => \$checkout,
312 "TARGET_IMAGE" => \$target_image,
313 "LOCALVERSION" => \$localversion,
314
315 "BISECT_GOOD" => \$bisect_good,
316 "BISECT_BAD" => \$bisect_bad,
317 "BISECT_TYPE" => \$bisect_type,
318 "BISECT_START" => \$bisect_start,
319 "BISECT_REPLAY" => \$bisect_replay,
320 "BISECT_FILES" => \$bisect_files,
321 "BISECT_REVERSE" => \$bisect_reverse,
322 "BISECT_CHECK" => \$bisect_check,
323
324 "CONFIG_BISECT" => \$config_bisect,
325 "CONFIG_BISECT_TYPE" => \$config_bisect_type,
326 "CONFIG_BISECT_CHECK" => \$config_bisect_check,
327
328 "PATCHCHECK_TYPE" => \$patchcheck_type,
329 "PATCHCHECK_START" => \$patchcheck_start,
330 "PATCHCHECK_CHERRY" => \$patchcheck_cherry,
331 "PATCHCHECK_END" => \$patchcheck_end,
332);
333
334# Options may be used by other options, record them.
335my %used_options;
336
337# default variables that can be used
338chomp ($variable{"PWD"} = `pwd`);
339
340$config_help{"MACHINE"} = << "EOF"
341 The machine hostname that you will test.
342 For build only tests, it is still needed to differentiate log files.
343EOF
344 ;
345$config_help{"SSH_USER"} = << "EOF"
346 The box is expected to have ssh on normal bootup, provide the user
347 (most likely root, since you need privileged operations)
348EOF
349 ;
350$config_help{"BUILD_DIR"} = << "EOF"
351 The directory that contains the Linux source code (full path).
352 You can use \${PWD} that will be the path where ktest.pl is run, or use
353 \${THIS_DIR} which is assigned \${PWD} but may be changed later.
354EOF
355 ;
356$config_help{"OUTPUT_DIR"} = << "EOF"
357 The directory that the objects will be built (full path).
358 (can not be same as BUILD_DIR)
359 You can use \${PWD} that will be the path where ktest.pl is run, or use
360 \${THIS_DIR} which is assigned \${PWD} but may be changed later.
361EOF
362 ;
363$config_help{"BUILD_TARGET"} = << "EOF"
364 The location of the compiled file to copy to the target.
365 (relative to OUTPUT_DIR)
366EOF
367 ;
368$config_help{"BUILD_OPTIONS"} = << "EOF"
369 Options to add to \"make\" when building.
370 i.e. -j20
371EOF
372 ;
373$config_help{"TARGET_IMAGE"} = << "EOF"
374 The place to put your image on the test machine.
375EOF
376 ;
377$config_help{"POWER_CYCLE"} = << "EOF"
378 A script or command to reboot the box.
379
380 Here is a digital loggers power switch example
381 POWER_CYCLE = wget --no-proxy -O /dev/null -q --auth-no-challenge 'http://admin:admin\@power/outlet?5=CCL'
382
383 Here is an example to reboot a virtual box on the current host
384 with the name "Guest".
385 POWER_CYCLE = virsh destroy Guest; sleep 5; virsh start Guest
386EOF
387 ;
388$config_help{"CONSOLE"} = << "EOF"
389 The script or command that reads the console
390
391 If you use ttywatch server, something like the following would work.
392CONSOLE = nc -d localhost 3001
393
394 For a virtual machine with guest name "Guest".
395CONSOLE = virsh console Guest
396EOF
397 ;
398$config_help{"LOCALVERSION"} = << "EOF"
399 Required version ending to differentiate the test
400 from other linux builds on the system.
401EOF
402 ;
403$config_help{"REBOOT_TYPE"} = << "EOF"
404 Way to reboot the box to the test kernel.
405 Only valid options so far are "grub", "grub2", "syslinux", and "script".
406
407 If you specify grub, it will assume grub version 1
408 and will search in /boot/grub/menu.lst for the title \$GRUB_MENU
409 and select that target to reboot to the kernel. If this is not
410 your setup, then specify "script" and have a command or script
411 specified in REBOOT_SCRIPT to boot to the target.
412
413 The entry in /boot/grub/menu.lst must be entered in manually.
414 The test will not modify that file.
415
416 If you specify grub2, then you also need to specify both \$GRUB_MENU
417 and \$GRUB_FILE.
418
419 If you specify syslinux, then you may use SYSLINUX to define the syslinux
420 command (defaults to extlinux), and SYSLINUX_PATH to specify the path to
421 the syslinux install (defaults to /boot/extlinux). But you have to specify
422 SYSLINUX_LABEL to define the label to boot to for the test kernel.
423EOF
424 ;
425$config_help{"GRUB_MENU"} = << "EOF"
426 The grub title name for the test kernel to boot
427 (Only mandatory if REBOOT_TYPE = grub or grub2)
428
429 Note, ktest.pl will not update the grub menu.lst, you need to
430 manually add an option for the test. ktest.pl will search
431 the grub menu.lst for this option to find what kernel to
432 reboot into.
433
434 For example, if in the /boot/grub/menu.lst the test kernel title has:
435 title Test Kernel
436 kernel vmlinuz-test
437 GRUB_MENU = Test Kernel
438
439 For grub2, a search of \$GRUB_FILE is performed for the lines
440 that begin with "menuentry". It will not detect submenus. The
441 menu must be a non-nested menu. Add the quotes used in the menu
442 to guarantee your selection, as the first menuentry with the content
443 of \$GRUB_MENU that is found will be used.
444EOF
445 ;
446$config_help{"GRUB_FILE"} = << "EOF"
447 If grub2 is used, the full path for the grub.cfg file is placed
448 here. Use something like /boot/grub2/grub.cfg to search.
449EOF
450 ;
451$config_help{"SYSLINUX_LABEL"} = << "EOF"
452 If syslinux is used, the label that boots the target kernel must
453 be specified with SYSLINUX_LABEL.
454EOF
455 ;
456$config_help{"REBOOT_SCRIPT"} = << "EOF"
457 A script to reboot the target into the test kernel
458 (Only mandatory if REBOOT_TYPE = script)
459EOF
460 ;
461
462sub _logit {
463 if (defined($opt{"LOG_FILE"})) {
464 open(OUT, ">> $opt{LOG_FILE}") or die "Can't write to $opt{LOG_FILE}";
465 print OUT @_;
466 close(OUT);
467 }
468}
469
470sub logit {
471 if (defined($opt{"LOG_FILE"})) {
472 _logit @_;
473 } else {
474 print @_;
475 }
476}
477
478sub doprint {
479 print @_;
480 _logit @_;
481}
482
483sub read_prompt {
484 my ($cancel, $prompt) = @_;
485
486 my $ans;
487
488 for (;;) {
489 if ($cancel) {
490 print "$prompt [y/n/C] ";
491 } else {
492 print "$prompt [Y/n] ";
493 }
494 $ans = <STDIN>;
495 chomp $ans;
496 if ($ans =~ /^\s*$/) {
497 if ($cancel) {
498 $ans = "c";
499 } else {
500 $ans = "y";
501 }
502 }
503 last if ($ans =~ /^y$/i || $ans =~ /^n$/i);
504 if ($cancel) {
505 last if ($ans =~ /^c$/i);
506 print "Please answer either 'y', 'n' or 'c'.\n";
507 } else {
508 print "Please answer either 'y' or 'n'.\n";
509 }
510 }
511 if ($ans =~ /^c/i) {
512 exit;
513 }
514 if ($ans !~ /^y$/i) {
515 return 0;
516 }
517 return 1;
518}
519
520sub read_yn {
521 my ($prompt) = @_;
522
523 return read_prompt 0, $prompt;
524}
525
526sub read_ync {
527 my ($prompt) = @_;
528
529 return read_prompt 1, $prompt;
530}
531
532sub get_mandatory_config {
533 my ($config) = @_;
534 my $ans;
535
536 return if (defined($opt{$config}));
537
538 if (defined($config_help{$config})) {
539 print "\n";
540 print $config_help{$config};
541 }
542
543 for (;;) {
544 print "$config = ";
545 if (defined($default{$config}) && length($default{$config})) {
546 print "\[$default{$config}\] ";
547 }
548 $ans = <STDIN>;
549 $ans =~ s/^\s*(.*\S)\s*$/$1/;
550 if ($ans =~ /^\s*$/) {
551 if ($default{$config}) {
552 $ans = $default{$config};
553 } else {
554 print "Your answer can not be blank\n";
555 next;
556 }
557 }
558 $entered_configs{$config} = ${ans};
559 last;
560 }
561}
562
563sub show_time {
564 my ($time) = @_;
565
566 my $hours = 0;
567 my $minutes = 0;
568
569 if ($time > 3600) {
570 $hours = int($time / 3600);
571 $time -= $hours * 3600;
572 }
573 if ($time > 60) {
574 $minutes = int($time / 60);
575 $time -= $minutes * 60;
576 }
577
578 if ($hours > 0) {
579 doprint "$hours hour";
580 doprint "s" if ($hours > 1);
581 doprint " ";
582 }
583
584 if ($minutes > 0) {
585 doprint "$minutes minute";
586 doprint "s" if ($minutes > 1);
587 doprint " ";
588 }
589
590 doprint "$time second";
591 doprint "s" if ($time != 1);
592}
593
594sub print_times {
595 doprint "\n";
596 if ($build_time) {
597 doprint "Build time: ";
598 show_time($build_time);
599 doprint "\n";
600 }
601 if ($install_time) {
602 doprint "Install time: ";
603 show_time($install_time);
604 doprint "\n";
605 }
606 if ($reboot_time) {
607 doprint "Reboot time: ";
608 show_time($reboot_time);
609 doprint "\n";
610 }
611 if ($test_time) {
612 doprint "Test time: ";
613 show_time($test_time);
614 doprint "\n";
615 }
616 # reset for iterations like bisect
617 $build_time = 0;
618 $install_time = 0;
619 $reboot_time = 0;
620 $test_time = 0;
621}
622
623sub get_mandatory_configs {
624 get_mandatory_config("MACHINE");
625 get_mandatory_config("BUILD_DIR");
626 get_mandatory_config("OUTPUT_DIR");
627
628 if ($newconfig) {
629 get_mandatory_config("BUILD_OPTIONS");
630 }
631
632 # options required for other than just building a kernel
633 if (!$buildonly) {
634 get_mandatory_config("POWER_CYCLE");
635 get_mandatory_config("CONSOLE");
636 }
637
638 # options required for install and more
639 if ($buildonly != 1) {
640 get_mandatory_config("SSH_USER");
641 get_mandatory_config("BUILD_TARGET");
642 get_mandatory_config("TARGET_IMAGE");
643 }
644
645 get_mandatory_config("LOCALVERSION");
646
647 return if ($buildonly);
648
649 my $rtype = $opt{"REBOOT_TYPE"};
650
651 if (!defined($rtype)) {
652 if (!defined($opt{"GRUB_MENU"})) {
653 get_mandatory_config("REBOOT_TYPE");
654 $rtype = $entered_configs{"REBOOT_TYPE"};
655 } else {
656 $rtype = "grub";
657 }
658 }
659
660 if ($rtype eq "grub") {
661 get_mandatory_config("GRUB_MENU");
662 }
663
664 if ($rtype eq "grub2") {
665 get_mandatory_config("GRUB_MENU");
666 get_mandatory_config("GRUB_FILE");
667 }
668
669 if ($rtype eq "syslinux") {
670 get_mandatory_config("SYSLINUX_LABEL");
671 }
672}
673
674sub process_variables {
675 my ($value, $remove_undef) = @_;
676 my $retval = "";
677
678 # We want to check for '\', and it is just easier
679 # to check the previous characet of '$' and not need
680 # to worry if '$' is the first character. By adding
681 # a space to $value, we can just check [^\\]\$ and
682 # it will still work.
683 $value = " $value";
684
685 while ($value =~ /(.*?[^\\])\$\{(.*?)\}(.*)/) {
686 my $begin = $1;
687 my $var = $2;
688 my $end = $3;
689 # append beginning of value to retval
690 $retval = "$retval$begin";
691 if (defined($variable{$var})) {
692 $retval = "$retval$variable{$var}";
693 } elsif (defined($remove_undef) && $remove_undef) {
694 # for if statements, any variable that is not defined,
695 # we simple convert to 0
696 $retval = "${retval}0";
697 } else {
698 # put back the origin piece.
699 $retval = "$retval\$\{$var\}";
700 # This could be an option that is used later, save
701 # it so we don't warn if this option is not one of
702 # ktests options.
703 $used_options{$var} = 1;
704 }
705 $value = $end;
706 }
707 $retval = "$retval$value";
708
709 # remove the space added in the beginning
710 $retval =~ s/ //;
711
712 return "$retval"
713}
714
715sub set_value {
716 my ($lvalue, $rvalue, $override, $overrides, $name) = @_;
717
718 my $prvalue = process_variables($rvalue);
719
720 if ($buildonly && $lvalue =~ /^TEST_TYPE(\[.*\])?$/ && $prvalue ne "build") {
721 # Note if a test is something other than build, then we
722 # will need other mandatory options.
723 if ($prvalue ne "install") {
724 # for bisect, we need to check BISECT_TYPE
725 if ($prvalue ne "bisect") {
726 $buildonly = 0;
727 }
728 } else {
729 # install still limits some mandatory options.
730 $buildonly = 2;
731 }
732 }
733
734 if ($buildonly && $lvalue =~ /^BISECT_TYPE(\[.*\])?$/ && $prvalue ne "build") {
735 if ($prvalue ne "install") {
736 $buildonly = 0;
737 } else {
738 # install still limits some mandatory options.
739 $buildonly = 2;
740 }
741 }
742
743 if (defined($opt{$lvalue})) {
744 if (!$override || defined(${$overrides}{$lvalue})) {
745 my $extra = "";
746 if ($override) {
747 $extra = "In the same override section!\n";
748 }
749 die "$name: $.: Option $lvalue defined more than once!\n$extra";
750 }
751 ${$overrides}{$lvalue} = $prvalue;
752 }
753
754 $opt{$lvalue} = $prvalue;
755}
756
757sub set_eval {
758 my ($lvalue, $rvalue, $name) = @_;
759
760 my $prvalue = process_variables($rvalue);
761 my $arr;
762
763 if (defined($evals{$lvalue})) {
764 $arr = $evals{$lvalue};
765 } else {
766 $arr = [];
767 $evals{$lvalue} = $arr;
768 }
769
770 push @{$arr}, $rvalue;
771}
772
773sub set_variable {
774 my ($lvalue, $rvalue) = @_;
775
776 if ($rvalue =~ /^\s*$/) {
777 delete $variable{$lvalue};
778 } else {
779 $rvalue = process_variables($rvalue);
780 $variable{$lvalue} = $rvalue;
781 }
782}
783
784sub process_compare {
785 my ($lval, $cmp, $rval) = @_;
786
787 # remove whitespace
788
789 $lval =~ s/^\s*//;
790 $lval =~ s/\s*$//;
791
792 $rval =~ s/^\s*//;
793 $rval =~ s/\s*$//;
794
795 if ($cmp eq "==") {
796 return $lval eq $rval;
797 } elsif ($cmp eq "!=") {
798 return $lval ne $rval;
799 } elsif ($cmp eq "=~") {
800 return $lval =~ m/$rval/;
801 } elsif ($cmp eq "!~") {
802 return $lval !~ m/$rval/;
803 }
804
805 my $statement = "$lval $cmp $rval";
806 my $ret = eval $statement;
807
808 # $@ stores error of eval
809 if ($@) {
810 return -1;
811 }
812
813 return $ret;
814}
815
816sub value_defined {
817 my ($val) = @_;
818
819 return defined($variable{$2}) ||
820 defined($opt{$2});
821}
822
823my $d = 0;
824sub process_expression {
825 my ($name, $val) = @_;
826
827 my $c = $d++;
828
829 while ($val =~ s/\(([^\(]*?)\)/\&\&\&\&VAL\&\&\&\&/) {
830 my $express = $1;
831
832 if (process_expression($name, $express)) {
833 $val =~ s/\&\&\&\&VAL\&\&\&\&/ 1 /;
834 } else {
835 $val =~ s/\&\&\&\&VAL\&\&\&\&/ 0 /;
836 }
837 }
838
839 $d--;
840 my $OR = "\\|\\|";
841 my $AND = "\\&\\&";
842
843 while ($val =~ s/^(.*?)($OR|$AND)//) {
844 my $express = $1;
845 my $op = $2;
846
847 if (process_expression($name, $express)) {
848 if ($op eq "||") {
849 return 1;
850 }
851 } else {
852 if ($op eq "&&") {
853 return 0;
854 }
855 }
856 }
857
858 if ($val =~ /(.*)(==|\!=|>=|<=|>|<|=~|\!~)(.*)/) {
859 my $ret = process_compare($1, $2, $3);
860 if ($ret < 0) {
861 die "$name: $.: Unable to process comparison\n";
862 }
863 return $ret;
864 }
865
866 if ($val =~ /^\s*(NOT\s*)?DEFINED\s+(\S+)\s*$/) {
867 if (defined $1) {
868 return !value_defined($2);
869 } else {
870 return value_defined($2);
871 }
872 }
873
874 if ($val =~ /^\s*0\s*$/) {
875 return 0;
876 } elsif ($val =~ /^\s*\d+\s*$/) {
877 return 1;
878 }
879
880 die ("$name: $.: Undefined content $val in if statement\n");
881}
882
883sub process_if {
884 my ($name, $value) = @_;
885
886 # Convert variables and replace undefined ones with 0
887 my $val = process_variables($value, 1);
888 my $ret = process_expression $name, $val;
889
890 return $ret;
891}
892
893sub __read_config {
894 my ($config, $current_test_num) = @_;
895
896 my $in;
897 open($in, $config) || die "can't read file $config";
898
899 my $name = $config;
900 $name =~ s,.*/(.*),$1,;
901
902 my $test_num = $$current_test_num;
903 my $default = 1;
904 my $repeat = 1;
905 my $num_tests_set = 0;
906 my $skip = 0;
907 my $rest;
908 my $line;
909 my $test_case = 0;
910 my $if = 0;
911 my $if_set = 0;
912 my $override = 0;
913
914 my %overrides;
915
916 while (<$in>) {
917
918 # ignore blank lines and comments
919 next if (/^\s*$/ || /\s*\#/);
920
921 if (/^\s*(TEST_START|DEFAULTS)\b(.*)/) {
922
923 my $type = $1;
924 $rest = $2;
925 $line = $2;
926
927 my $old_test_num;
928 my $old_repeat;
929 $override = 0;
930
931 if ($type eq "TEST_START") {
932
933 if ($num_tests_set) {
934 die "$name: $.: Can not specify both NUM_TESTS and TEST_START\n";
935 }
936
937 $old_test_num = $test_num;
938 $old_repeat = $repeat;
939
940 $test_num += $repeat;
941 $default = 0;
942 $repeat = 1;
943 } else {
944 $default = 1;
945 }
946
947 # If SKIP is anywhere in the line, the command will be skipped
948 if ($rest =~ s/\s+SKIP\b//) {
949 $skip = 1;
950 } else {
951 $test_case = 1;
952 $skip = 0;
953 }
954
955 if ($rest =~ s/\sELSE\b//) {
956 if (!$if) {
957 die "$name: $.: ELSE found with out matching IF section\n$_";
958 }
959 $if = 0;
960
961 if ($if_set) {
962 $skip = 1;
963 } else {
964 $skip = 0;
965 }
966 }
967
968 if ($rest =~ s/\sIF\s+(.*)//) {
969 if (process_if($name, $1)) {
970 $if_set = 1;
971 } else {
972 $skip = 1;
973 }
974 $if = 1;
975 } else {
976 $if = 0;
977 $if_set = 0;
978 }
979
980 if (!$skip) {
981 if ($type eq "TEST_START") {
982 if ($rest =~ s/\s+ITERATE\s+(\d+)//) {
983 $repeat = $1;
984 $repeat_tests{"$test_num"} = $repeat;
985 }
986 } elsif ($rest =~ s/\sOVERRIDE\b//) {
987 # DEFAULT only
988 $override = 1;
989 # Clear previous overrides
990 %overrides = ();
991 }
992 }
993
994 if (!$skip && $rest !~ /^\s*$/) {
995 die "$name: $.: Gargbage found after $type\n$_";
996 }
997
998 if ($skip && $type eq "TEST_START") {
999 $test_num = $old_test_num;
1000 $repeat = $old_repeat;
1001 }
1002
1003 } elsif (/^\s*ELSE\b(.*)$/) {
1004 if (!$if) {
1005 die "$name: $.: ELSE found with out matching IF section\n$_";
1006 }
1007 $rest = $1;
1008 if ($if_set) {
1009 $skip = 1;
1010 $rest = "";
1011 } else {
1012 $skip = 0;
1013
1014 if ($rest =~ /\sIF\s+(.*)/) {
1015 # May be a ELSE IF section.
1016 if (process_if($name, $1)) {
1017 $if_set = 1;
1018 } else {
1019 $skip = 1;
1020 }
1021 $rest = "";
1022 } else {
1023 $if = 0;
1024 }
1025 }
1026
1027 if ($rest !~ /^\s*$/) {
1028 die "$name: $.: Gargbage found after DEFAULTS\n$_";
1029 }
1030
1031 } elsif (/^\s*INCLUDE\s+(\S+)/) {
1032
1033 next if ($skip);
1034
1035 if (!$default) {
1036 die "$name: $.: INCLUDE can only be done in default sections\n$_";
1037 }
1038
1039 my $file = process_variables($1);
1040
1041 if ($file !~ m,^/,) {
1042 # check the path of the config file first
1043 if ($config =~ m,(.*)/,) {
1044 if (-f "$1/$file") {
1045 $file = "$1/$file";
1046 }
1047 }
1048 }
1049
1050 if ( ! -r $file ) {
1051 die "$name: $.: Can't read file $file\n$_";
1052 }
1053
1054 if (__read_config($file, \$test_num)) {
1055 $test_case = 1;
1056 }
1057
1058 } elsif (/^\s*([A-Z_\[\]\d]+)\s*=~\s*(.*?)\s*$/) {
1059
1060 next if ($skip);
1061
1062 my $lvalue = $1;
1063 my $rvalue = $2;
1064
1065 if ($default || $lvalue =~ /\[\d+\]$/) {
1066 set_eval($lvalue, $rvalue, $name);
1067 } else {
1068 my $val = "$lvalue\[$test_num\]";
1069 set_eval($val, $rvalue, $name);
1070 }
1071
1072 } elsif (/^\s*([A-Z_\[\]\d]+)\s*=\s*(.*?)\s*$/) {
1073
1074 next if ($skip);
1075
1076 my $lvalue = $1;
1077 my $rvalue = $2;
1078
1079 if (!$default &&
1080 ($lvalue eq "NUM_TESTS" ||
1081 $lvalue eq "LOG_FILE" ||
1082 $lvalue eq "CLEAR_LOG")) {
1083 die "$name: $.: $lvalue must be set in DEFAULTS section\n";
1084 }
1085
1086 if ($lvalue eq "NUM_TESTS") {
1087 if ($test_num) {
1088 die "$name: $.: Can not specify both NUM_TESTS and TEST_START\n";
1089 }
1090 if (!$default) {
1091 die "$name: $.: NUM_TESTS must be set in default section\n";
1092 }
1093 $num_tests_set = 1;
1094 }
1095
1096 if ($default || $lvalue =~ /\[\d+\]$/) {
1097 set_value($lvalue, $rvalue, $override, \%overrides, $name);
1098 } else {
1099 my $val = "$lvalue\[$test_num\]";
1100 set_value($val, $rvalue, $override, \%overrides, $name);
1101
1102 if ($repeat > 1) {
1103 $repeats{$val} = $repeat;
1104 }
1105 }
1106 } elsif (/^\s*([A-Z_\[\]\d]+)\s*:=\s*(.*?)\s*$/) {
1107 next if ($skip);
1108
1109 my $lvalue = $1;
1110 my $rvalue = $2;
1111
1112 # process config variables.
1113 # Config variables are only active while reading the
1114 # config and can be defined anywhere. They also ignore
1115 # TEST_START and DEFAULTS, but are skipped if they are in
1116 # on of these sections that have SKIP defined.
1117 # The save variable can be
1118 # defined multiple times and the new one simply overrides
1119 # the prevous one.
1120 set_variable($lvalue, $rvalue);
1121
1122 } else {
1123 die "$name: $.: Garbage found in config\n$_";
1124 }
1125 }
1126
1127 if ($test_num) {
1128 $test_num += $repeat - 1;
1129 $opt{"NUM_TESTS"} = $test_num;
1130 }
1131
1132 close($in);
1133
1134 $$current_test_num = $test_num;
1135
1136 return $test_case;
1137}
1138
1139sub get_test_case {
1140 print "What test case would you like to run?\n";
1141 print " (build, install or boot)\n";
1142 print " Other tests are available but require editing the config file\n";
1143 my $ans = <STDIN>;
1144 chomp $ans;
1145 $default{"TEST_TYPE"} = $ans;
1146}
1147
1148sub read_config {
1149 my ($config) = @_;
1150
1151 my $test_case;
1152 my $test_num = 0;
1153
1154 $test_case = __read_config $config, \$test_num;
1155
1156 # make sure we have all mandatory configs
1157 get_mandatory_configs;
1158
1159 # was a test specified?
1160 if (!$test_case) {
1161 print "No test case specified.\n";
1162 get_test_case;
1163 }
1164
1165 # set any defaults
1166
1167 foreach my $default (keys %default) {
1168 if (!defined($opt{$default})) {
1169 $opt{$default} = $default{$default};
1170 }
1171 }
1172
1173 if ($opt{"IGNORE_UNUSED"} == 1) {
1174 return;
1175 }
1176
1177 my %not_used;
1178
1179 # check if there are any stragglers (typos?)
1180 foreach my $option (keys %opt) {
1181 my $op = $option;
1182 # remove per test labels.
1183 $op =~ s/\[.*\]//;
1184 if (!exists($option_map{$op}) &&
1185 !exists($default{$op}) &&
1186 !exists($used_options{$op})) {
1187 $not_used{$op} = 1;
1188 }
1189 }
1190
1191 if (%not_used) {
1192 my $s = "s are";
1193 $s = " is" if (keys %not_used == 1);
1194 print "The following option$s not used; could be a typo:\n";
1195 foreach my $option (keys %not_used) {
1196 print "$option\n";
1197 }
1198 print "Set IGRNORE_UNUSED = 1 to have ktest ignore unused variables\n";
1199 if (!read_yn "Do you want to continue?") {
1200 exit -1;
1201 }
1202 }
1203}
1204
1205sub __eval_option {
1206 my ($name, $option, $i) = @_;
1207
1208 # Add space to evaluate the character before $
1209 $option = " $option";
1210 my $retval = "";
1211 my $repeated = 0;
1212 my $parent = 0;
1213
1214 foreach my $test (keys %repeat_tests) {
1215 if ($i >= $test &&
1216 $i < $test + $repeat_tests{$test}) {
1217
1218 $repeated = 1;
1219 $parent = $test;
1220 last;
1221 }
1222 }
1223
1224 while ($option =~ /(.*?[^\\])\$\{(.*?)\}(.*)/) {
1225 my $start = $1;
1226 my $var = $2;
1227 my $end = $3;
1228
1229 # Append beginning of line
1230 $retval = "$retval$start";
1231
1232 # If the iteration option OPT[$i] exists, then use that.
1233 # otherwise see if the default OPT (without [$i]) exists.
1234
1235 my $o = "$var\[$i\]";
1236 my $parento = "$var\[$parent\]";
1237
1238 # If a variable contains itself, use the default var
1239 if (($var eq $name) && defined($opt{$var})) {
1240 $o = $opt{$var};
1241 $retval = "$retval$o";
1242 } elsif (defined($opt{$o})) {
1243 $o = $opt{$o};
1244 $retval = "$retval$o";
1245 } elsif ($repeated && defined($opt{$parento})) {
1246 $o = $opt{$parento};
1247 $retval = "$retval$o";
1248 } elsif (defined($opt{$var})) {
1249 $o = $opt{$var};
1250 $retval = "$retval$o";
1251 } elsif ($var eq "KERNEL_VERSION" && defined($make)) {
1252 # special option KERNEL_VERSION uses kernel version
1253 get_version();
1254 $retval = "$retval$version";
1255 } else {
1256 $retval = "$retval\$\{$var\}";
1257 }
1258
1259 $option = $end;
1260 }
1261
1262 $retval = "$retval$option";
1263
1264 $retval =~ s/^ //;
1265
1266 return $retval;
1267}
1268
1269sub process_evals {
1270 my ($name, $option, $i) = @_;
1271
1272 my $option_name = "$name\[$i\]";
1273 my $ev;
1274
1275 my $old_option = $option;
1276
1277 if (defined($evals{$option_name})) {
1278 $ev = $evals{$option_name};
1279 } elsif (defined($evals{$name})) {
1280 $ev = $evals{$name};
1281 } else {
1282 return $option;
1283 }
1284
1285 for my $e (@{$ev}) {
1286 eval "\$option =~ $e";
1287 }
1288
1289 if ($option ne $old_option) {
1290 doprint("$name changed from '$old_option' to '$option'\n");
1291 }
1292
1293 return $option;
1294}
1295
1296sub eval_option {
1297 my ($name, $option, $i) = @_;
1298
1299 my $prev = "";
1300
1301 # Since an option can evaluate to another option,
1302 # keep iterating until we do not evaluate any more
1303 # options.
1304 my $r = 0;
1305 while ($prev ne $option) {
1306 # Check for recursive evaluations.
1307 # 100 deep should be more than enough.
1308 if ($r++ > 100) {
1309 die "Over 100 evaluations accurred with $option\n" .
1310 "Check for recursive variables\n";
1311 }
1312 $prev = $option;
1313 $option = __eval_option($name, $option, $i);
1314 }
1315
1316 $option = process_evals($name, $option, $i);
1317
1318 return $option;
1319}
1320
1321sub run_command;
1322sub start_monitor;
1323sub end_monitor;
1324sub wait_for_monitor;
1325
1326sub reboot {
1327 my ($time) = @_;
1328
1329 # Make sure everything has been written to disk
1330 run_ssh("sync");
1331
1332 if (defined($time)) {
1333 start_monitor;
1334 # flush out current monitor
1335 # May contain the reboot success line
1336 wait_for_monitor 1;
1337 }
1338
1339 # try to reboot normally
1340 if (run_command $reboot) {
1341 if (defined($powercycle_after_reboot)) {
1342 sleep $powercycle_after_reboot;
1343 run_command "$power_cycle";
1344 }
1345 } else {
1346 # nope? power cycle it.
1347 run_command "$power_cycle";
1348 }
1349
1350 if (defined($time)) {
1351
1352 # We only want to get to the new kernel, don't fail
1353 # if we stumble over a call trace.
1354 my $save_ignore_errors = $ignore_errors;
1355 $ignore_errors = 1;
1356
1357 # Look for the good kernel to boot
1358 if (wait_for_monitor($time, "Linux version")) {
1359 # reboot got stuck?
1360 doprint "Reboot did not finish. Forcing power cycle\n";
1361 run_command "$power_cycle";
1362 }
1363
1364 $ignore_errors = $save_ignore_errors;
1365
1366 # Still need to wait for the reboot to finish
1367 wait_for_monitor($time, $reboot_success_line);
1368
1369 end_monitor;
1370 }
1371}
1372
1373sub reboot_to_good {
1374 my ($time) = @_;
1375
1376 if (defined($switch_to_good)) {
1377 run_command $switch_to_good;
1378 }
1379
1380 reboot $time;
1381}
1382
1383sub do_not_reboot {
1384 my $i = $iteration;
1385
1386 return $test_type eq "build" || $no_reboot ||
1387 ($test_type eq "patchcheck" && $opt{"PATCHCHECK_TYPE[$i]"} eq "build") ||
1388 ($test_type eq "bisect" && $opt{"BISECT_TYPE[$i]"} eq "build");
1389}
1390
1391sub dodie {
1392 doprint "CRITICAL FAILURE... ", @_, "\n";
1393
1394 my $i = $iteration;
1395
1396 if ($reboot_on_error && !do_not_reboot) {
1397
1398 doprint "REBOOTING\n";
1399 reboot_to_good;
1400
1401 } elsif ($poweroff_on_error && defined($power_off)) {
1402 doprint "POWERING OFF\n";
1403 `$power_off`;
1404 }
1405
1406 if (defined($opt{"LOG_FILE"})) {
1407 print " See $opt{LOG_FILE} for more info.\n";
1408 }
1409
1410 if ($monitor_cnt) {
1411 # restore terminal settings
1412 system("stty $stty_orig");
1413 }
1414
1415 die @_, "\n";
1416}
1417
1418sub create_pty {
1419 my ($ptm, $pts) = @_;
1420 my $tmp;
1421 my $TIOCSPTLCK = 0x40045431;
1422 my $TIOCGPTN = 0x80045430;
1423
1424 sysopen($ptm, "/dev/ptmx", O_RDWR | O_NONBLOCK) or
1425 dodie "Cant open /dev/ptmx";
1426
1427 # unlockpt()
1428 $tmp = pack("i", 0);
1429 ioctl($ptm, $TIOCSPTLCK, $tmp) or
1430 dodie "ioctl TIOCSPTLCK for /dev/ptmx failed";
1431
1432 # ptsname()
1433 ioctl($ptm, $TIOCGPTN, $tmp) or
1434 dodie "ioctl TIOCGPTN for /dev/ptmx failed";
1435 $tmp = unpack("i", $tmp);
1436
1437 sysopen($pts, "/dev/pts/$tmp", O_RDWR | O_NONBLOCK) or
1438 dodie "Can't open /dev/pts/$tmp";
1439}
1440
1441sub exec_console {
1442 my ($ptm, $pts) = @_;
1443
1444 close($ptm);
1445
1446 close(\*STDIN);
1447 close(\*STDOUT);
1448 close(\*STDERR);
1449
1450 open(\*STDIN, '<&', $pts);
1451 open(\*STDOUT, '>&', $pts);
1452 open(\*STDERR, '>&', $pts);
1453
1454 close($pts);
1455
1456 exec $console or
1457 die "Can't open console $console";
1458}
1459
1460sub open_console {
1461 my ($ptm) = @_;
1462 my $pts = \*PTSFD;
1463 my $pid;
1464
1465 # save terminal settings
1466 $stty_orig = `stty -g`;
1467
1468 # place terminal in cbreak mode so that stdin can be read one character at
1469 # a time without having to wait for a newline
1470 system("stty -icanon -echo -icrnl");
1471
1472 create_pty($ptm, $pts);
1473
1474 $pid = fork;
1475
1476 if (!$pid) {
1477 # child
1478 exec_console($ptm, $pts)
1479 }
1480
1481 # parent
1482 close($pts);
1483
1484 return $pid;
1485
1486 open(PTSFD, "Stop perl from warning about single use of PTSFD");
1487}
1488
1489sub close_console {
1490 my ($fp, $pid) = @_;
1491
1492 doprint "kill child process $pid\n";
1493 kill $close_console_signal, $pid;
1494
1495 print "closing!\n";
1496 close($fp);
1497
1498 # restore terminal settings
1499 system("stty $stty_orig");
1500}
1501
1502sub start_monitor {
1503 if ($monitor_cnt++) {
1504 return;
1505 }
1506 $monitor_fp = \*MONFD;
1507 $monitor_pid = open_console $monitor_fp;
1508
1509 return;
1510
1511 open(MONFD, "Stop perl from warning about single use of MONFD");
1512}
1513
1514sub end_monitor {
1515 return if (!defined $console);
1516 if (--$monitor_cnt) {
1517 return;
1518 }
1519 close_console($monitor_fp, $monitor_pid);
1520}
1521
1522sub wait_for_monitor {
1523 my ($time, $stop) = @_;
1524 my $full_line = "";
1525 my $line;
1526 my $booted = 0;
1527 my $start_time = time;
1528 my $skip_call_trace = 0;
1529 my $bug = 0;
1530 my $bug_ignored = 0;
1531 my $now;
1532
1533 doprint "** Wait for monitor to settle down **\n";
1534
1535 # read the monitor and wait for the system to calm down
1536 while (!$booted) {
1537 $line = wait_for_input($monitor_fp, $time);
1538 last if (!defined($line));
1539 print "$line";
1540 $full_line .= $line;
1541
1542 if (defined($stop) && $full_line =~ /$stop/) {
1543 doprint "wait for monitor detected $stop\n";
1544 $booted = 1;
1545 }
1546
1547 if ($full_line =~ /\[ backtrace testing \]/) {
1548 $skip_call_trace = 1;
1549 }
1550
1551 if ($full_line =~ /call trace:/i) {
1552 if (!$bug && !$skip_call_trace) {
1553 if ($ignore_errors) {
1554 $bug_ignored = 1;
1555 } else {
1556 $bug = 1;
1557 }
1558 }
1559 }
1560
1561 if ($full_line =~ /\[ end of backtrace testing \]/) {
1562 $skip_call_trace = 0;
1563 }
1564
1565 if ($full_line =~ /Kernel panic -/) {
1566 $bug = 1;
1567 }
1568
1569 if ($line =~ /\n/) {
1570 $full_line = "";
1571 }
1572 $now = time;
1573 if ($now - $start_time >= $max_monitor_wait) {
1574 doprint "Exiting monitor flush due to hitting MAX_MONITOR_WAIT\n";
1575 return 1;
1576 }
1577 }
1578 print "** Monitor flushed **\n";
1579
1580 # if stop is defined but wasn't hit, return error
1581 # used by reboot (which wants to see a reboot)
1582 if (defined($stop) && !$booted) {
1583 $bug = 1;
1584 }
1585 return $bug;
1586}
1587
1588sub save_logs {
1589 my ($result, $basedir) = @_;
1590 my @t = localtime;
1591 my $date = sprintf "%04d%02d%02d%02d%02d%02d",
1592 1900+$t[5],$t[4],$t[3],$t[2],$t[1],$t[0];
1593
1594 my $type = $build_type;
1595 if ($type =~ /useconfig/) {
1596 $type = "useconfig";
1597 }
1598
1599 my $dir = "$machine-$test_type-$type-$result-$date";
1600
1601 $dir = "$basedir/$dir";
1602
1603 if (!-d $dir) {
1604 mkpath($dir) or
1605 die "can't create $dir";
1606 }
1607
1608 my %files = (
1609 "config" => $output_config,
1610 "buildlog" => $buildlog,
1611 "dmesg" => $dmesg,
1612 "testlog" => $testlog,
1613 );
1614
1615 while (my ($name, $source) = each(%files)) {
1616 if (-f "$source") {
1617 cp "$source", "$dir/$name" or
1618 die "failed to copy $source";
1619 }
1620 }
1621
1622 doprint "*** Saved info to $dir ***\n";
1623}
1624
1625sub fail {
1626
1627 if (defined($post_test)) {
1628 run_command $post_test;
1629 }
1630
1631 if ($die_on_failure) {
1632 dodie @_;
1633 }
1634
1635 doprint "FAILED\n";
1636
1637 my $i = $iteration;
1638
1639 # no need to reboot for just building.
1640 if (!do_not_reboot) {
1641 doprint "REBOOTING\n";
1642 reboot_to_good $sleep_time;
1643 }
1644
1645 my $name = "";
1646
1647 if (defined($test_name)) {
1648 $name = " ($test_name)";
1649 }
1650
1651 print_times;
1652
1653 doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
1654 doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
1655 doprint "KTEST RESULT: TEST $i$name Failed: ", @_, "\n";
1656 doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
1657 doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
1658
1659 if (defined($store_failures)) {
1660 save_logs "fail", $store_failures;
1661 }
1662
1663 return 1;
1664}
1665
1666sub run_command {
1667 my ($command, $redirect) = @_;
1668 my $start_time;
1669 my $end_time;
1670 my $dolog = 0;
1671 my $dord = 0;
1672 my $pid;
1673
1674 $start_time = time;
1675
1676 $command =~ s/\$SSH_USER/$ssh_user/g;
1677 $command =~ s/\$MACHINE/$machine/g;
1678
1679 doprint("$command ... ");
1680
1681 $pid = open(CMD, "$command 2>&1 |") or
1682 (fail "unable to exec $command" and return 0);
1683
1684 if (defined($opt{"LOG_FILE"})) {
1685 open(LOG, ">>$opt{LOG_FILE}") or
1686 dodie "failed to write to log";
1687 $dolog = 1;
1688 }
1689
1690 if (defined($redirect)) {
1691 open (RD, ">$redirect") or
1692 dodie "failed to write to redirect $redirect";
1693 $dord = 1;
1694 }
1695
1696 while (<CMD>) {
1697 print LOG if ($dolog);
1698 print RD if ($dord);
1699 }
1700
1701 waitpid($pid, 0);
1702 my $failed = $?;
1703
1704 close(CMD);
1705 close(LOG) if ($dolog);
1706 close(RD) if ($dord);
1707
1708 $end_time = time;
1709 my $delta = $end_time - $start_time;
1710
1711 if ($delta == 1) {
1712 doprint "[1 second] ";
1713 } else {
1714 doprint "[$delta seconds] ";
1715 }
1716
1717 if ($failed) {
1718 doprint "FAILED!\n";
1719 } else {
1720 doprint "SUCCESS\n";
1721 }
1722
1723 return !$failed;
1724}
1725
1726sub run_ssh {
1727 my ($cmd) = @_;
1728 my $cp_exec = $ssh_exec;
1729
1730 $cp_exec =~ s/\$SSH_COMMAND/$cmd/g;
1731 return run_command "$cp_exec";
1732}
1733
1734sub run_scp {
1735 my ($src, $dst, $cp_scp) = @_;
1736
1737 $cp_scp =~ s/\$SRC_FILE/$src/g;
1738 $cp_scp =~ s/\$DST_FILE/$dst/g;
1739
1740 return run_command "$cp_scp";
1741}
1742
1743sub run_scp_install {
1744 my ($src, $dst) = @_;
1745
1746 my $cp_scp = $scp_to_target_install;
1747
1748 return run_scp($src, $dst, $cp_scp);
1749}
1750
1751sub run_scp_mod {
1752 my ($src, $dst) = @_;
1753
1754 my $cp_scp = $scp_to_target;
1755
1756 return run_scp($src, $dst, $cp_scp);
1757}
1758
1759sub get_grub2_index {
1760
1761 return if (defined($grub_number) && defined($last_grub_menu) &&
1762 $last_grub_menu eq $grub_menu && defined($last_machine) &&
1763 $last_machine eq $machine);
1764
1765 doprint "Find grub2 menu ... ";
1766 $grub_number = -1;
1767
1768 my $ssh_grub = $ssh_exec;
1769 $ssh_grub =~ s,\$SSH_COMMAND,cat $grub_file,g;
1770
1771 open(IN, "$ssh_grub |")
1772 or die "unable to get $grub_file";
1773
1774 my $found = 0;
1775
1776 while (<IN>) {
1777 if (/^menuentry.*$grub_menu/) {
1778 $grub_number++;
1779 $found = 1;
1780 last;
1781 } elsif (/^menuentry\s/) {
1782 $grub_number++;
1783 }
1784 }
1785 close(IN);
1786
1787 die "Could not find '$grub_menu' in $grub_file on $machine"
1788 if (!$found);
1789 doprint "$grub_number\n";
1790 $last_grub_menu = $grub_menu;
1791 $last_machine = $machine;
1792}
1793
1794sub get_grub_index {
1795
1796 if ($reboot_type eq "grub2") {
1797 get_grub2_index;
1798 return;
1799 }
1800
1801 if ($reboot_type ne "grub") {
1802 return;
1803 }
1804 return if (defined($grub_number) && defined($last_grub_menu) &&
1805 $last_grub_menu eq $grub_menu && defined($last_machine) &&
1806 $last_machine eq $machine);
1807
1808 doprint "Find grub menu ... ";
1809 $grub_number = -1;
1810
1811 my $ssh_grub = $ssh_exec;
1812 $ssh_grub =~ s,\$SSH_COMMAND,cat /boot/grub/menu.lst,g;
1813
1814 open(IN, "$ssh_grub |")
1815 or die "unable to get menu.lst";
1816
1817 my $found = 0;
1818
1819 while (<IN>) {
1820 if (/^\s*title\s+$grub_menu\s*$/) {
1821 $grub_number++;
1822 $found = 1;
1823 last;
1824 } elsif (/^\s*title\s/) {
1825 $grub_number++;
1826 }
1827 }
1828 close(IN);
1829
1830 die "Could not find '$grub_menu' in /boot/grub/menu on $machine"
1831 if (!$found);
1832 doprint "$grub_number\n";
1833 $last_grub_menu = $grub_menu;
1834 $last_machine = $machine;
1835}
1836
1837sub wait_for_input
1838{
1839 my ($fp, $time) = @_;
1840 my $rin;
1841 my $rout;
1842 my $nr;
1843 my $buf;
1844 my $line;
1845 my $ch;
1846
1847 if (!defined($time)) {
1848 $time = $timeout;
1849 }
1850
1851 $rin = '';
1852 vec($rin, fileno($fp), 1) = 1;
1853 vec($rin, fileno(\*STDIN), 1) = 1;
1854
1855 while (1) {
1856 $nr = select($rout=$rin, undef, undef, $time);
1857
1858 if ($nr <= 0) {
1859 return undef;
1860 }
1861
1862 # copy data from stdin to the console
1863 if (vec($rout, fileno(\*STDIN), 1) == 1) {
1864 sysread(\*STDIN, $buf, 1000);
1865 syswrite($fp, $buf, 1000);
1866 next;
1867 }
1868
1869 $line = "";
1870
1871 # try to read one char at a time
1872 while (sysread $fp, $ch, 1) {
1873 $line .= $ch;
1874 last if ($ch eq "\n");
1875 }
1876
1877 if (!length($line)) {
1878 return undef;
1879 }
1880
1881 return $line;
1882 }
1883}
1884
1885sub reboot_to {
1886 if (defined($switch_to_test)) {
1887 run_command $switch_to_test;
1888 }
1889
1890 if ($reboot_type eq "grub") {
1891 run_ssh "'(echo \"savedefault --default=$grub_number --once\" | grub --batch)'";
1892 } elsif ($reboot_type eq "grub2") {
1893 run_ssh "$grub_reboot $grub_number";
1894 } elsif ($reboot_type eq "syslinux") {
1895 run_ssh "$syslinux --once \\\"$syslinux_label\\\" $syslinux_path";
1896 } elsif (defined $reboot_script) {
1897 run_command "$reboot_script";
1898 }
1899 reboot;
1900}
1901
1902sub get_sha1 {
1903 my ($commit) = @_;
1904
1905 doprint "git rev-list --max-count=1 $commit ... ";
1906 my $sha1 = `git rev-list --max-count=1 $commit`;
1907 my $ret = $?;
1908
1909 logit $sha1;
1910
1911 if ($ret) {
1912 doprint "FAILED\n";
1913 dodie "Failed to get git $commit";
1914 }
1915
1916 print "SUCCESS\n";
1917
1918 chomp $sha1;
1919
1920 return $sha1;
1921}
1922
1923sub monitor {
1924 my $booted = 0;
1925 my $bug = 0;
1926 my $bug_ignored = 0;
1927 my $skip_call_trace = 0;
1928 my $loops;
1929
1930 my $start_time = time;
1931
1932 wait_for_monitor 5;
1933
1934 my $line;
1935 my $full_line = "";
1936
1937 open(DMESG, "> $dmesg") or
1938 die "unable to write to $dmesg";
1939
1940 reboot_to;
1941
1942 my $success_start;
1943 my $failure_start;
1944 my $monitor_start = time;
1945 my $done = 0;
1946 my $version_found = 0;
1947
1948 while (!$done) {
1949
1950 if ($bug && defined($stop_after_failure) &&
1951 $stop_after_failure >= 0) {
1952 my $time = $stop_after_failure - (time - $failure_start);
1953 $line = wait_for_input($monitor_fp, $time);
1954 if (!defined($line)) {
1955 doprint "bug timed out after $booted_timeout seconds\n";
1956 doprint "Test forced to stop after $stop_after_failure seconds after failure\n";
1957 last;
1958 }
1959 } elsif ($booted) {
1960 $line = wait_for_input($monitor_fp, $booted_timeout);
1961 if (!defined($line)) {
1962 my $s = $booted_timeout == 1 ? "" : "s";
1963 doprint "Successful boot found: break after $booted_timeout second$s\n";
1964 last;
1965 }
1966 } else {
1967 $line = wait_for_input($monitor_fp);
1968 if (!defined($line)) {
1969 my $s = $timeout == 1 ? "" : "s";
1970 doprint "Timed out after $timeout second$s\n";
1971 last;
1972 }
1973 }
1974
1975 doprint $line;
1976 print DMESG $line;
1977
1978 # we are not guaranteed to get a full line
1979 $full_line .= $line;
1980
1981 if ($full_line =~ /$success_line/) {
1982 $booted = 1;
1983 $success_start = time;
1984 }
1985
1986 if ($booted && defined($stop_after_success) &&
1987 $stop_after_success >= 0) {
1988 my $now = time;
1989 if ($now - $success_start >= $stop_after_success) {
1990 doprint "Test forced to stop after $stop_after_success seconds after success\n";
1991 last;
1992 }
1993 }
1994
1995 if ($full_line =~ /\[ backtrace testing \]/) {
1996 $skip_call_trace = 1;
1997 }
1998
1999 if ($full_line =~ /call trace:/i) {
2000 if (!$bug && !$skip_call_trace) {
2001 if ($ignore_errors) {
2002 $bug_ignored = 1;
2003 } else {
2004 $bug = 1;
2005 $failure_start = time;
2006 }
2007 }
2008 }
2009
2010 if ($bug && defined($stop_after_failure) &&
2011 $stop_after_failure >= 0) {
2012 my $now = time;
2013 if ($now - $failure_start >= $stop_after_failure) {
2014 doprint "Test forced to stop after $stop_after_failure seconds after failure\n";
2015 last;
2016 }
2017 }
2018
2019 if ($full_line =~ /\[ end of backtrace testing \]/) {
2020 $skip_call_trace = 0;
2021 }
2022
2023 if ($full_line =~ /Kernel panic -/) {
2024 $failure_start = time;
2025 $bug = 1;
2026 }
2027
2028 # Detect triple faults by testing the banner
2029 if ($full_line =~ /\bLinux version (\S+).*\n/) {
2030 if ($1 eq $version) {
2031 $version_found = 1;
2032 } elsif ($version_found && $detect_triplefault) {
2033 # We already booted into the kernel we are testing,
2034 # but now we booted into another kernel?
2035 # Consider this a triple fault.
2036 doprint "Already booted in Linux kernel $version, but now\n";
2037 doprint "we booted into Linux kernel $1.\n";
2038 doprint "Assuming that this is a triple fault.\n";
2039 doprint "To disable this: set DETECT_TRIPLE_FAULT to 0\n";
2040 last;
2041 }
2042 }
2043
2044 if ($line =~ /\n/) {
2045 $full_line = "";
2046 }
2047
2048 if ($stop_test_after > 0 && !$booted && !$bug) {
2049 if (time - $monitor_start > $stop_test_after) {
2050 doprint "STOP_TEST_AFTER ($stop_test_after seconds) timed out\n";
2051 $done = 1;
2052 }
2053 }
2054 }
2055
2056 my $end_time = time;
2057 $reboot_time = $end_time - $start_time;
2058
2059 close(DMESG);
2060
2061 if ($bug) {
2062 return 0 if ($in_bisect);
2063 fail "failed - got a bug report" and return 0;
2064 }
2065
2066 if (!$booted) {
2067 return 0 if ($in_bisect);
2068 fail "failed - never got a boot prompt." and return 0;
2069 }
2070
2071 if ($bug_ignored) {
2072 doprint "WARNING: Call Trace detected but ignored due to IGNORE_ERRORS=1\n";
2073 }
2074
2075 return 1;
2076}
2077
2078sub eval_kernel_version {
2079 my ($option) = @_;
2080
2081 $option =~ s/\$KERNEL_VERSION/$version/g;
2082
2083 return $option;
2084}
2085
2086sub do_post_install {
2087
2088 return if (!defined($post_install));
2089
2090 my $cp_post_install = eval_kernel_version $post_install;
2091 run_command "$cp_post_install" or
2092 dodie "Failed to run post install";
2093}
2094
2095# Sometimes the reboot fails, and will hang. We try to ssh to the box
2096# and if we fail, we force another reboot, that should powercycle it.
2097sub test_booted {
2098 if (!run_ssh "echo testing connection") {
2099 reboot $sleep_time;
2100 }
2101}
2102
2103sub install {
2104
2105 return if ($no_install);
2106
2107 my $start_time = time;
2108
2109 if (defined($pre_install)) {
2110 my $cp_pre_install = eval_kernel_version $pre_install;
2111 run_command "$cp_pre_install" or
2112 dodie "Failed to run pre install";
2113 }
2114
2115 my $cp_target = eval_kernel_version $target_image;
2116
2117 test_booted;
2118
2119 run_scp_install "$outputdir/$build_target", "$cp_target" or
2120 dodie "failed to copy image";
2121
2122 my $install_mods = 0;
2123
2124 # should we process modules?
2125 $install_mods = 0;
2126 open(IN, "$output_config") or dodie("Can't read config file");
2127 while (<IN>) {
2128 if (/CONFIG_MODULES(=y)?/) {
2129 if (defined($1)) {
2130 $install_mods = 1;
2131 last;
2132 }
2133 }
2134 }
2135 close(IN);
2136
2137 if (!$install_mods) {
2138 do_post_install;
2139 doprint "No modules needed\n";
2140 my $end_time = time;
2141 $install_time = $end_time - $start_time;
2142 return;
2143 }
2144
2145 run_command "$make INSTALL_MOD_STRIP=1 INSTALL_MOD_PATH=$tmpdir modules_install" or
2146 dodie "Failed to install modules";
2147
2148 my $modlib = "/lib/modules/$version";
2149 my $modtar = "ktest-mods.tar.bz2";
2150
2151 run_ssh "rm -rf $modlib" or
2152 dodie "failed to remove old mods: $modlib";
2153
2154 # would be nice if scp -r did not follow symbolic links
2155 run_command "cd $tmpdir && tar -cjf $modtar lib/modules/$version" or
2156 dodie "making tarball";
2157
2158 run_scp_mod "$tmpdir/$modtar", "/tmp" or
2159 dodie "failed to copy modules";
2160
2161 unlink "$tmpdir/$modtar";
2162
2163 run_ssh "'(cd / && tar xjf /tmp/$modtar)'" or
2164 dodie "failed to tar modules";
2165
2166 run_ssh "rm -f /tmp/$modtar";
2167
2168 do_post_install;
2169
2170 my $end_time = time;
2171 $install_time = $end_time - $start_time;
2172}
2173
2174sub get_version {
2175 # get the release name
2176 return if ($have_version);
2177 doprint "$make kernelrelease ... ";
2178 $version = `$make -s kernelrelease | tail -1`;
2179 chomp($version);
2180 doprint "$version\n";
2181 $have_version = 1;
2182}
2183
2184sub start_monitor_and_install {
2185 # Make sure the stable kernel has finished booting
2186
2187 # Install bisects, don't need console
2188 if (defined $console) {
2189 start_monitor;
2190 wait_for_monitor 5;
2191 end_monitor;
2192 }
2193
2194 get_grub_index;
2195 get_version;
2196 install;
2197
2198 start_monitor if (defined $console);
2199 return monitor;
2200}
2201
2202my $check_build_re = ".*:.*(warning|error|Error):.*";
2203my $utf8_quote = "\\x{e2}\\x{80}(\\x{98}|\\x{99})";
2204
2205sub process_warning_line {
2206 my ($line) = @_;
2207
2208 chomp $line;
2209
2210 # for distcc heterogeneous systems, some compilers
2211 # do things differently causing warning lines
2212 # to be slightly different. This makes an attempt
2213 # to fixe those issues.
2214
2215 # chop off the index into the line
2216 # using distcc, some compilers give different indexes
2217 # depending on white space
2218 $line =~ s/^(\s*\S+:\d+:)\d+/$1/;
2219
2220 # Some compilers use UTF-8 extended for quotes and some don't.
2221 $line =~ s/$utf8_quote/'/g;
2222
2223 return $line;
2224}
2225
2226# Read buildlog and check against warnings file for any
2227# new warnings.
2228#
2229# Returns 1 if OK
2230# 0 otherwise
2231sub check_buildlog {
2232 return 1 if (!defined $warnings_file);
2233
2234 my %warnings_list;
2235
2236 # Failed builds should not reboot the target
2237 my $save_no_reboot = $no_reboot;
2238 $no_reboot = 1;
2239
2240 if (-f $warnings_file) {
2241 open(IN, $warnings_file) or
2242 dodie "Error opening $warnings_file";
2243
2244 while (<IN>) {
2245 if (/$check_build_re/) {
2246 my $warning = process_warning_line $_;
2247
2248 $warnings_list{$warning} = 1;
2249 }
2250 }
2251 close(IN);
2252 }
2253
2254 # If warnings file didn't exist, and WARNINGS_FILE exist,
2255 # then we fail on any warning!
2256
2257 open(IN, $buildlog) or dodie "Can't open $buildlog";
2258 while (<IN>) {
2259 if (/$check_build_re/) {
2260 my $warning = process_warning_line $_;
2261
2262 if (!defined $warnings_list{$warning}) {
2263 fail "New warning found (not in $warnings_file)\n$_\n";
2264 $no_reboot = $save_no_reboot;
2265 return 0;
2266 }
2267 }
2268 }
2269 $no_reboot = $save_no_reboot;
2270 close(IN);
2271}
2272
2273sub check_patch_buildlog {
2274 my ($patch) = @_;
2275
2276 my @files = `git show $patch | diffstat -l`;
2277
2278 foreach my $file (@files) {
2279 chomp $file;
2280 }
2281
2282 open(IN, "git show $patch |") or
2283 dodie "failed to show $patch";
2284 while (<IN>) {
2285 if (m,^--- a/(.*),) {
2286 chomp $1;
2287 $files[$#files] = $1;
2288 }
2289 }
2290 close(IN);
2291
2292 open(IN, $buildlog) or dodie "Can't open $buildlog";
2293 while (<IN>) {
2294 if (/^\s*(.*?):.*(warning|error)/) {
2295 my $err = $1;
2296 foreach my $file (@files) {
2297 my $fullpath = "$builddir/$file";
2298 if ($file eq $err || $fullpath eq $err) {
2299 fail "$file built with warnings" and return 0;
2300 }
2301 }
2302 }
2303 }
2304 close(IN);
2305
2306 return 1;
2307}
2308
2309sub apply_min_config {
2310 my $outconfig = "$output_config.new";
2311
2312 # Read the config file and remove anything that
2313 # is in the force_config hash (from minconfig and others)
2314 # then add the force config back.
2315
2316 doprint "Applying minimum configurations into $output_config.new\n";
2317
2318 open (OUT, ">$outconfig") or
2319 dodie "Can't create $outconfig";
2320
2321 if (-f $output_config) {
2322 open (IN, $output_config) or
2323 dodie "Failed to open $output_config";
2324 while (<IN>) {
2325 if (/^(# )?(CONFIG_[^\s=]*)/) {
2326 next if (defined($force_config{$2}));
2327 }
2328 print OUT;
2329 }
2330 close IN;
2331 }
2332 foreach my $config (keys %force_config) {
2333 print OUT "$force_config{$config}\n";
2334 }
2335 close OUT;
2336
2337 run_command "mv $outconfig $output_config";
2338}
2339
2340sub make_oldconfig {
2341
2342 my @force_list = keys %force_config;
2343
2344 if ($#force_list >= 0) {
2345 apply_min_config;
2346 }
2347
2348 if (!run_command "$make olddefconfig") {
2349 # Perhaps olddefconfig doesn't exist in this version of the kernel
2350 # try oldnoconfig
2351 doprint "olddefconfig failed, trying make oldnoconfig\n";
2352 if (!run_command "$make oldnoconfig") {
2353 doprint "oldnoconfig failed, trying yes '' | make oldconfig\n";
2354 # try a yes '' | oldconfig
2355 run_command "yes '' | $make oldconfig" or
2356 dodie "failed make config oldconfig";
2357 }
2358 }
2359}
2360
2361# read a config file and use this to force new configs.
2362sub load_force_config {
2363 my ($config) = @_;
2364
2365 doprint "Loading force configs from $config\n";
2366 open(IN, $config) or
2367 dodie "failed to read $config";
2368 while (<IN>) {
2369 chomp;
2370 if (/^(CONFIG[^\s=]*)(\s*=.*)/) {
2371 $force_config{$1} = $_;
2372 } elsif (/^# (CONFIG_\S*) is not set/) {
2373 $force_config{$1} = $_;
2374 }
2375 }
2376 close IN;
2377}
2378
2379sub build {
2380 my ($type) = @_;
2381
2382 unlink $buildlog;
2383
2384 my $start_time = time;
2385
2386 # Failed builds should not reboot the target
2387 my $save_no_reboot = $no_reboot;
2388 $no_reboot = 1;
2389
2390 # Calculate a new version from here.
2391 $have_version = 0;
2392
2393 if (defined($pre_build)) {
2394 my $ret = run_command $pre_build;
2395 if (!$ret && defined($pre_build_die) &&
2396 $pre_build_die) {
2397 dodie "failed to pre_build\n";
2398 }
2399 }
2400
2401 if ($type =~ /^useconfig:(.*)/) {
2402 run_command "cp $1 $output_config" or
2403 dodie "could not copy $1 to .config";
2404
2405 $type = "oldconfig";
2406 }
2407
2408 # old config can ask questions
2409 if ($type eq "oldconfig") {
2410 $type = "olddefconfig";
2411
2412 # allow for empty configs
2413 run_command "touch $output_config";
2414
2415 if (!$noclean) {
2416 run_command "mv $output_config $outputdir/config_temp" or
2417 dodie "moving .config";
2418
2419 run_command "$make mrproper" or dodie "make mrproper";
2420
2421 run_command "mv $outputdir/config_temp $output_config" or
2422 dodie "moving config_temp";
2423 }
2424
2425 } elsif (!$noclean) {
2426 unlink "$output_config";
2427 run_command "$make mrproper" or
2428 dodie "make mrproper";
2429 }
2430
2431 # add something to distinguish this build
2432 open(OUT, "> $outputdir/localversion") or dodie("Can't make localversion file");
2433 print OUT "$localversion\n";
2434 close(OUT);
2435
2436 if (defined($minconfig)) {
2437 load_force_config($minconfig);
2438 }
2439
2440 if ($type ne "olddefconfig") {
2441 run_command "$make $type" or
2442 dodie "failed make config";
2443 }
2444 # Run old config regardless, to enforce min configurations
2445 make_oldconfig;
2446
2447 my $build_ret = run_command "$make $build_options", $buildlog;
2448
2449 if (defined($post_build)) {
2450 # Because a post build may change the kernel version
2451 # do it now.
2452 get_version;
2453 my $ret = run_command $post_build;
2454 if (!$ret && defined($post_build_die) &&
2455 $post_build_die) {
2456 dodie "failed to post_build\n";
2457 }
2458 }
2459
2460 if (!$build_ret) {
2461 # bisect may need this to pass
2462 if ($in_bisect) {
2463 $no_reboot = $save_no_reboot;
2464 return 0;
2465 }
2466 fail "failed build" and return 0;
2467 }
2468
2469 $no_reboot = $save_no_reboot;
2470
2471 my $end_time = time;
2472 $build_time = $end_time - $start_time;
2473
2474 return 1;
2475}
2476
2477sub halt {
2478 if (!run_ssh "halt" or defined($power_off)) {
2479 if (defined($poweroff_after_halt)) {
2480 sleep $poweroff_after_halt;
2481 run_command "$power_off";
2482 }
2483 } else {
2484 # nope? the zap it!
2485 run_command "$power_off";
2486 }
2487}
2488
2489sub success {
2490 my ($i) = @_;
2491
2492 if (defined($post_test)) {
2493 run_command $post_test;
2494 }
2495
2496 $successes++;
2497
2498 my $name = "";
2499
2500 if (defined($test_name)) {
2501 $name = " ($test_name)";
2502 }
2503
2504 print_times;
2505
2506 doprint "\n\n*******************************************\n";
2507 doprint "*******************************************\n";
2508 doprint "KTEST RESULT: TEST $i$name SUCCESS!!!! **\n";
2509 doprint "*******************************************\n";
2510 doprint "*******************************************\n";
2511
2512 if (defined($store_successes)) {
2513 save_logs "success", $store_successes;
2514 }
2515
2516 if ($i != $opt{"NUM_TESTS"} && !do_not_reboot) {
2517 doprint "Reboot and wait $sleep_time seconds\n";
2518 reboot_to_good $sleep_time;
2519 }
2520}
2521
2522sub answer_bisect {
2523 for (;;) {
2524 doprint "Pass, fail, or skip? [p/f/s]";
2525 my $ans = <STDIN>;
2526 chomp $ans;
2527 if ($ans eq "p" || $ans eq "P") {
2528 return 1;
2529 } elsif ($ans eq "f" || $ans eq "F") {
2530 return 0;
2531 } elsif ($ans eq "s" || $ans eq "S") {
2532 return -1;
2533 } else {
2534 print "Please answer 'p', 'f', or 's'\n";
2535 }
2536 }
2537}
2538
2539sub child_run_test {
2540 my $failed = 0;
2541
2542 # child should have no power
2543 $reboot_on_error = 0;
2544 $poweroff_on_error = 0;
2545 $die_on_failure = 1;
2546
2547 run_command $run_test, $testlog or $failed = 1;
2548
2549 exit $failed;
2550}
2551
2552my $child_done;
2553
2554sub child_finished {
2555 $child_done = 1;
2556}
2557
2558sub do_run_test {
2559 my $child_pid;
2560 my $child_exit;
2561 my $line;
2562 my $full_line;
2563 my $bug = 0;
2564 my $bug_ignored = 0;
2565
2566 my $start_time = time;
2567
2568 wait_for_monitor 1;
2569
2570 doprint "run test $run_test\n";
2571
2572 $child_done = 0;
2573
2574 $SIG{CHLD} = qw(child_finished);
2575
2576 $child_pid = fork;
2577
2578 child_run_test if (!$child_pid);
2579
2580 $full_line = "";
2581
2582 do {
2583 $line = wait_for_input($monitor_fp, 1);
2584 if (defined($line)) {
2585
2586 # we are not guaranteed to get a full line
2587 $full_line .= $line;
2588 doprint $line;
2589
2590 if ($full_line =~ /call trace:/i) {
2591 if ($ignore_errors) {
2592 $bug_ignored = 1;
2593 } else {
2594 $bug = 1;
2595 }
2596 }
2597
2598 if ($full_line =~ /Kernel panic -/) {
2599 $bug = 1;
2600 }
2601
2602 if ($line =~ /\n/) {
2603 $full_line = "";
2604 }
2605 }
2606 } while (!$child_done && !$bug);
2607
2608 if (!$bug && $bug_ignored) {
2609 doprint "WARNING: Call Trace detected but ignored due to IGNORE_ERRORS=1\n";
2610 }
2611
2612 if ($bug) {
2613 my $failure_start = time;
2614 my $now;
2615 do {
2616 $line = wait_for_input($monitor_fp, 1);
2617 if (defined($line)) {
2618 doprint $line;
2619 }
2620 $now = time;
2621 if ($now - $failure_start >= $stop_after_failure) {
2622 last;
2623 }
2624 } while (defined($line));
2625
2626 doprint "Detected kernel crash!\n";
2627 # kill the child with extreme prejudice
2628 kill 9, $child_pid;
2629 }
2630
2631 waitpid $child_pid, 0;
2632 $child_exit = $? >> 8;
2633
2634 my $end_time = time;
2635 $test_time = $end_time - $start_time;
2636
2637 if (!$bug && $in_bisect) {
2638 if (defined($bisect_ret_good)) {
2639 if ($child_exit == $bisect_ret_good) {
2640 return 1;
2641 }
2642 }
2643 if (defined($bisect_ret_skip)) {
2644 if ($child_exit == $bisect_ret_skip) {
2645 return -1;
2646 }
2647 }
2648 if (defined($bisect_ret_abort)) {
2649 if ($child_exit == $bisect_ret_abort) {
2650 fail "test abort" and return -2;
2651 }
2652 }
2653 if (defined($bisect_ret_bad)) {
2654 if ($child_exit == $bisect_ret_skip) {
2655 return 0;
2656 }
2657 }
2658 if (defined($bisect_ret_default)) {
2659 if ($bisect_ret_default eq "good") {
2660 return 1;
2661 } elsif ($bisect_ret_default eq "bad") {
2662 return 0;
2663 } elsif ($bisect_ret_default eq "skip") {
2664 return -1;
2665 } elsif ($bisect_ret_default eq "abort") {
2666 return -2;
2667 } else {
2668 fail "unknown default action: $bisect_ret_default"
2669 and return -2;
2670 }
2671 }
2672 }
2673
2674 if ($bug || $child_exit) {
2675 return 0 if $in_bisect;
2676 fail "test failed" and return 0;
2677 }
2678 return 1;
2679}
2680
2681sub run_git_bisect {
2682 my ($command) = @_;
2683
2684 doprint "$command ... ";
2685
2686 my $output = `$command 2>&1`;
2687 my $ret = $?;
2688
2689 logit $output;
2690
2691 if ($ret) {
2692 doprint "FAILED\n";
2693 dodie "Failed to git bisect";
2694 }
2695
2696 doprint "SUCCESS\n";
2697 if ($output =~ m/^(Bisecting: .*\(roughly \d+ steps?\))\s+\[([[:xdigit:]]+)\]/) {
2698 doprint "$1 [$2]\n";
2699 } elsif ($output =~ m/^([[:xdigit:]]+) is the first bad commit/) {
2700 $bisect_bad_commit = $1;
2701 doprint "Found bad commit... $1\n";
2702 return 0;
2703 } else {
2704 # we already logged it, just print it now.
2705 print $output;
2706 }
2707
2708 return 1;
2709}
2710
2711sub bisect_reboot {
2712 doprint "Reboot and sleep $bisect_sleep_time seconds\n";
2713 reboot_to_good $bisect_sleep_time;
2714}
2715
2716# returns 1 on success, 0 on failure, -1 on skip
2717sub run_bisect_test {
2718 my ($type, $buildtype) = @_;
2719
2720 my $failed = 0;
2721 my $result;
2722 my $output;
2723 my $ret;
2724
2725 $in_bisect = 1;
2726
2727 build $buildtype or $failed = 1;
2728
2729 if ($type ne "build") {
2730 if ($failed && $bisect_skip) {
2731 $in_bisect = 0;
2732 return -1;
2733 }
2734 dodie "Failed on build" if $failed;
2735
2736 # Now boot the box
2737 start_monitor_and_install or $failed = 1;
2738
2739 if ($type ne "boot") {
2740 if ($failed && $bisect_skip) {
2741 end_monitor;
2742 bisect_reboot;
2743 $in_bisect = 0;
2744 return -1;
2745 }
2746 dodie "Failed on boot" if $failed;
2747
2748 do_run_test or $failed = 1;
2749 }
2750 end_monitor;
2751 }
2752
2753 if ($failed) {
2754 $result = 0;
2755 } else {
2756 $result = 1;
2757 }
2758
2759 # reboot the box to a kernel we can ssh to
2760 if ($type ne "build") {
2761 bisect_reboot;
2762 }
2763 $in_bisect = 0;
2764
2765 return $result;
2766}
2767
2768sub run_bisect {
2769 my ($type) = @_;
2770 my $buildtype = "oldconfig";
2771
2772 # We should have a minconfig to use?
2773 if (defined($minconfig)) {
2774 $buildtype = "useconfig:$minconfig";
2775 }
2776
2777 # If the user sets bisect_tries to less than 1, then no tries
2778 # is a success.
2779 my $ret = 1;
2780
2781 # Still let the user manually decide that though.
2782 if ($bisect_tries < 1 && $bisect_manual) {
2783 $ret = answer_bisect;
2784 }
2785
2786 for (my $i = 0; $i < $bisect_tries; $i++) {
2787 if ($bisect_tries > 1) {
2788 my $t = $i + 1;
2789 doprint("Running bisect trial $t of $bisect_tries:\n");
2790 }
2791 $ret = run_bisect_test $type, $buildtype;
2792
2793 if ($bisect_manual) {
2794 $ret = answer_bisect;
2795 }
2796
2797 last if (!$ret);
2798 }
2799
2800 # Are we looking for where it worked, not failed?
2801 if ($reverse_bisect && $ret >= 0) {
2802 $ret = !$ret;
2803 }
2804
2805 if ($ret > 0) {
2806 return "good";
2807 } elsif ($ret == 0) {
2808 return "bad";
2809 } elsif ($bisect_skip) {
2810 doprint "HIT A BAD COMMIT ... SKIPPING\n";
2811 return "skip";
2812 }
2813}
2814
2815sub update_bisect_replay {
2816 my $tmp_log = "$tmpdir/ktest_bisect_log";
2817 run_command "git bisect log > $tmp_log" or
2818 die "can't create bisect log";
2819 return $tmp_log;
2820}
2821
2822sub bisect {
2823 my ($i) = @_;
2824
2825 my $result;
2826
2827 die "BISECT_GOOD[$i] not defined\n" if (!defined($bisect_good));
2828 die "BISECT_BAD[$i] not defined\n" if (!defined($bisect_bad));
2829 die "BISECT_TYPE[$i] not defined\n" if (!defined($bisect_type));
2830
2831 my $good = $bisect_good;
2832 my $bad = $bisect_bad;
2833 my $type = $bisect_type;
2834 my $start = $bisect_start;
2835 my $replay = $bisect_replay;
2836 my $start_files = $bisect_files;
2837
2838 if (defined($start_files)) {
2839 $start_files = " -- " . $start_files;
2840 } else {
2841 $start_files = "";
2842 }
2843
2844 # convert to true sha1's
2845 $good = get_sha1($good);
2846 $bad = get_sha1($bad);
2847
2848 if (defined($bisect_reverse) && $bisect_reverse == 1) {
2849 doprint "Performing a reverse bisect (bad is good, good is bad!)\n";
2850 $reverse_bisect = 1;
2851 } else {
2852 $reverse_bisect = 0;
2853 }
2854
2855 # Can't have a test without having a test to run
2856 if ($type eq "test" && !defined($run_test)) {
2857 $type = "boot";
2858 }
2859
2860 # Check if a bisect was running
2861 my $bisect_start_file = "$builddir/.git/BISECT_START";
2862
2863 my $check = $bisect_check;
2864 my $do_check = defined($check) && $check ne "0";
2865
2866 if ( -f $bisect_start_file ) {
2867 print "Bisect in progress found\n";
2868 if ($do_check) {
2869 print " If you say yes, then no checks of good or bad will be done\n";
2870 }
2871 if (defined($replay)) {
2872 print "** BISECT_REPLAY is defined in config file **";
2873 print " Ignore config option and perform new git bisect log?\n";
2874 if (read_ync " (yes, no, or cancel) ") {
2875 $replay = update_bisect_replay;
2876 $do_check = 0;
2877 }
2878 } elsif (read_yn "read git log and continue?") {
2879 $replay = update_bisect_replay;
2880 $do_check = 0;
2881 }
2882 }
2883
2884 if ($do_check) {
2885
2886 # get current HEAD
2887 my $head = get_sha1("HEAD");
2888
2889 if ($check ne "good") {
2890 doprint "TESTING BISECT BAD [$bad]\n";
2891 run_command "git checkout $bad" or
2892 die "Failed to checkout $bad";
2893
2894 $result = run_bisect $type;
2895
2896 if ($result ne "bad") {
2897 fail "Tested BISECT_BAD [$bad] and it succeeded" and return 0;
2898 }
2899 }
2900
2901 if ($check ne "bad") {
2902 doprint "TESTING BISECT GOOD [$good]\n";
2903 run_command "git checkout $good" or
2904 die "Failed to checkout $good";
2905
2906 $result = run_bisect $type;
2907
2908 if ($result ne "good") {
2909 fail "Tested BISECT_GOOD [$good] and it failed" and return 0;
2910 }
2911 }
2912
2913 # checkout where we started
2914 run_command "git checkout $head" or
2915 die "Failed to checkout $head";
2916 }
2917
2918 run_command "git bisect start$start_files" or
2919 dodie "could not start bisect";
2920
2921 if (defined($replay)) {
2922 run_command "git bisect replay $replay" or
2923 dodie "failed to run replay";
2924 } else {
2925
2926 run_command "git bisect good $good" or
2927 dodie "could not set bisect good to $good";
2928
2929 run_git_bisect "git bisect bad $bad" or
2930 dodie "could not set bisect bad to $bad";
2931
2932 }
2933
2934 if (defined($start)) {
2935 run_command "git checkout $start" or
2936 dodie "failed to checkout $start";
2937 }
2938
2939 my $test;
2940 do {
2941 $result = run_bisect $type;
2942 $test = run_git_bisect "git bisect $result";
2943 print_times;
2944 } while ($test);
2945
2946 run_command "git bisect log" or
2947 dodie "could not capture git bisect log";
2948
2949 run_command "git bisect reset" or
2950 dodie "could not reset git bisect";
2951
2952 doprint "Bad commit was [$bisect_bad_commit]\n";
2953
2954 success $i;
2955}
2956
2957# config_ignore holds the configs that were set (or unset) for
2958# a good config and we will ignore these configs for the rest
2959# of a config bisect. These configs stay as they were.
2960my %config_ignore;
2961
2962# config_set holds what all configs were set as.
2963my %config_set;
2964
2965# config_off holds the set of configs that the bad config had disabled.
2966# We need to record them and set them in the .config when running
2967# olddefconfig, because olddefconfig keeps the defaults.
2968my %config_off;
2969
2970# config_off_tmp holds a set of configs to turn off for now
2971my @config_off_tmp;
2972
2973# config_list is the set of configs that are being tested
2974my %config_list;
2975my %null_config;
2976
2977my %dependency;
2978
2979sub assign_configs {
2980 my ($hash, $config) = @_;
2981
2982 doprint "Reading configs from $config\n";
2983
2984 open (IN, $config)
2985 or dodie "Failed to read $config";
2986
2987 while (<IN>) {
2988 chomp;
2989 if (/^((CONFIG\S*)=.*)/) {
2990 ${$hash}{$2} = $1;
2991 } elsif (/^(# (CONFIG\S*) is not set)/) {
2992 ${$hash}{$2} = $1;
2993 }
2994 }
2995
2996 close(IN);
2997}
2998
2999sub process_config_ignore {
3000 my ($config) = @_;
3001
3002 assign_configs \%config_ignore, $config;
3003}
3004
3005sub get_dependencies {
3006 my ($config) = @_;
3007
3008 my $arr = $dependency{$config};
3009 if (!defined($arr)) {
3010 return ();
3011 }
3012
3013 my @deps = @{$arr};
3014
3015 foreach my $dep (@{$arr}) {
3016 print "ADD DEP $dep\n";
3017 @deps = (@deps, get_dependencies $dep);
3018 }
3019
3020 return @deps;
3021}
3022
3023sub save_config {
3024 my ($pc, $file) = @_;
3025
3026 my %configs = %{$pc};
3027
3028 doprint "Saving configs into $file\n";
3029
3030 open(OUT, ">$file") or dodie "Can not write to $file";
3031
3032 foreach my $config (keys %configs) {
3033 print OUT "$configs{$config}\n";
3034 }
3035 close(OUT);
3036}
3037
3038sub create_config {
3039 my ($name, $pc) = @_;
3040
3041 doprint "Creating old config from $name configs\n";
3042
3043 save_config $pc, $output_config;
3044
3045 make_oldconfig;
3046}
3047
3048# compare two config hashes, and return configs with different vals.
3049# It returns B's config values, but you can use A to see what A was.
3050sub diff_config_vals {
3051 my ($pa, $pb) = @_;
3052
3053 # crappy Perl way to pass in hashes.
3054 my %a = %{$pa};
3055 my %b = %{$pb};
3056
3057 my %ret;
3058
3059 foreach my $item (keys %a) {
3060 if (defined($b{$item}) && $b{$item} ne $a{$item}) {
3061 $ret{$item} = $b{$item};
3062 }
3063 }
3064
3065 return %ret;
3066}
3067
3068# compare two config hashes and return the configs in B but not A
3069sub diff_configs {
3070 my ($pa, $pb) = @_;
3071
3072 my %ret;
3073
3074 # crappy Perl way to pass in hashes.
3075 my %a = %{$pa};
3076 my %b = %{$pb};
3077
3078 foreach my $item (keys %b) {
3079 if (!defined($a{$item})) {
3080 $ret{$item} = $b{$item};
3081 }
3082 }
3083
3084 return %ret;
3085}
3086
3087# return if two configs are equal or not
3088# 0 is equal +1 b has something a does not
3089# +1 if a and b have a different item.
3090# -1 if a has something b does not
3091sub compare_configs {
3092 my ($pa, $pb) = @_;
3093
3094 my %ret;
3095
3096 # crappy Perl way to pass in hashes.
3097 my %a = %{$pa};
3098 my %b = %{$pb};
3099
3100 foreach my $item (keys %b) {
3101 if (!defined($a{$item})) {
3102 return 1;
3103 }
3104 if ($a{$item} ne $b{$item}) {
3105 return 1;
3106 }
3107 }
3108
3109 foreach my $item (keys %a) {
3110 if (!defined($b{$item})) {
3111 return -1;
3112 }
3113 }
3114
3115 return 0;
3116}
3117
3118sub run_config_bisect_test {
3119 my ($type) = @_;
3120
3121 my $ret = run_bisect_test $type, "oldconfig";
3122
3123 if ($bisect_manual) {
3124 $ret = answer_bisect;
3125 }
3126
3127 return $ret;
3128}
3129
3130sub process_failed {
3131 my ($config) = @_;
3132
3133 doprint "\n\n***************************************\n";
3134 doprint "Found bad config: $config\n";
3135 doprint "***************************************\n\n";
3136}
3137
3138# used for config bisecting
3139my $good_config;
3140my $bad_config;
3141
3142sub process_new_config {
3143 my ($tc, $nc, $gc, $bc) = @_;
3144
3145 my %tmp_config = %{$tc};
3146 my %good_configs = %{$gc};
3147 my %bad_configs = %{$bc};
3148
3149 my %new_configs;
3150
3151 my $runtest = 1;
3152 my $ret;
3153
3154 create_config "tmp_configs", \%tmp_config;
3155 assign_configs \%new_configs, $output_config;
3156
3157 $ret = compare_configs \%new_configs, \%bad_configs;
3158 if (!$ret) {
3159 doprint "New config equals bad config, try next test\n";
3160 $runtest = 0;
3161 }
3162
3163 if ($runtest) {
3164 $ret = compare_configs \%new_configs, \%good_configs;
3165 if (!$ret) {
3166 doprint "New config equals good config, try next test\n";
3167 $runtest = 0;
3168 }
3169 }
3170
3171 %{$nc} = %new_configs;
3172
3173 return $runtest;
3174}
3175
3176sub run_config_bisect {
3177 my ($pgood, $pbad) = @_;
3178
3179 my $type = $config_bisect_type;
3180
3181 my %good_configs = %{$pgood};
3182 my %bad_configs = %{$pbad};
3183
3184 my %diff_configs = diff_config_vals \%good_configs, \%bad_configs;
3185 my %b_configs = diff_configs \%good_configs, \%bad_configs;
3186 my %g_configs = diff_configs \%bad_configs, \%good_configs;
3187
3188 my @diff_arr = keys %diff_configs;
3189 my $len_diff = $#diff_arr + 1;
3190
3191 my @b_arr = keys %b_configs;
3192 my $len_b = $#b_arr + 1;
3193
3194 my @g_arr = keys %g_configs;
3195 my $len_g = $#g_arr + 1;
3196
3197 my $runtest = 1;
3198 my %new_configs;
3199 my $ret;
3200
3201 # First, lets get it down to a single subset.
3202 # Is the problem with a difference in values?
3203 # Is the problem with a missing config?
3204 # Is the problem with a config that breaks things?
3205
3206 # Enable all of one set and see if we get a new bad
3207 # or good config.
3208
3209 # first set the good config to the bad values.
3210
3211 doprint "d=$len_diff g=$len_g b=$len_b\n";
3212
3213 # first lets enable things in bad config that are enabled in good config
3214
3215 if ($len_diff > 0) {
3216 if ($len_b > 0 || $len_g > 0) {
3217 my %tmp_config = %bad_configs;
3218
3219 doprint "Set tmp config to be bad config with good config values\n";
3220 foreach my $item (@diff_arr) {
3221 $tmp_config{$item} = $good_configs{$item};
3222 }
3223
3224 $runtest = process_new_config \%tmp_config, \%new_configs,
3225 \%good_configs, \%bad_configs;
3226 }
3227 }
3228
3229 if (!$runtest && $len_diff > 0) {
3230
3231 if ($len_diff == 1) {
3232 process_failed $diff_arr[0];
3233 return 1;
3234 }
3235 my %tmp_config = %bad_configs;
3236
3237 my $half = int($#diff_arr / 2);
3238 my @tophalf = @diff_arr[0 .. $half];
3239
3240 doprint "Settings bisect with top half:\n";
3241 doprint "Set tmp config to be bad config with some good config values\n";
3242 foreach my $item (@tophalf) {
3243 $tmp_config{$item} = $good_configs{$item};
3244 }
3245
3246 $runtest = process_new_config \%tmp_config, \%new_configs,
3247 \%good_configs, \%bad_configs;
3248
3249 if (!$runtest) {
3250 my %tmp_config = %bad_configs;
3251
3252 doprint "Try bottom half\n";
3253
3254 my @bottomhalf = @diff_arr[$half+1 .. $#diff_arr];
3255
3256 foreach my $item (@bottomhalf) {
3257 $tmp_config{$item} = $good_configs{$item};
3258 }
3259
3260 $runtest = process_new_config \%tmp_config, \%new_configs,
3261 \%good_configs, \%bad_configs;
3262 }
3263 }
3264
3265 if ($runtest) {
3266 $ret = run_config_bisect_test $type;
3267 if ($ret) {
3268 doprint "NEW GOOD CONFIG\n";
3269 %good_configs = %new_configs;
3270 run_command "mv $good_config ${good_config}.last";
3271 save_config \%good_configs, $good_config;
3272 %{$pgood} = %good_configs;
3273 } else {
3274 doprint "NEW BAD CONFIG\n";
3275 %bad_configs = %new_configs;
3276 run_command "mv $bad_config ${bad_config}.last";
3277 save_config \%bad_configs, $bad_config;
3278 %{$pbad} = %bad_configs;
3279 }
3280 return 0;
3281 }
3282
3283 fail "Hmm, need to do a mix match?\n";
3284 return -1;
3285}
3286
3287sub config_bisect {
3288 my ($i) = @_;
3289
3290 my $type = $config_bisect_type;
3291 my $ret;
3292
3293 $bad_config = $config_bisect;
3294
3295 if (defined($config_bisect_good)) {
3296 $good_config = $config_bisect_good;
3297 } elsif (defined($minconfig)) {
3298 $good_config = $minconfig;
3299 } else {
3300 doprint "No config specified, checking if defconfig works";
3301 $ret = run_bisect_test $type, "defconfig";
3302 if (!$ret) {
3303 fail "Have no good config to compare with, please set CONFIG_BISECT_GOOD";
3304 return 1;
3305 }
3306 $good_config = $output_config;
3307 }
3308
3309 # we don't want min configs to cause issues here.
3310 doprint "Disabling 'MIN_CONFIG' for this test\n";
3311 undef $minconfig;
3312
3313 my %good_configs;
3314 my %bad_configs;
3315 my %tmp_configs;
3316
3317 doprint "Run good configs through make oldconfig\n";
3318 assign_configs \%tmp_configs, $good_config;
3319 create_config "$good_config", \%tmp_configs;
3320 assign_configs \%good_configs, $output_config;
3321
3322 doprint "Run bad configs through make oldconfig\n";
3323 assign_configs \%tmp_configs, $bad_config;
3324 create_config "$bad_config", \%tmp_configs;
3325 assign_configs \%bad_configs, $output_config;
3326
3327 $good_config = "$tmpdir/good_config";
3328 $bad_config = "$tmpdir/bad_config";
3329
3330 save_config \%good_configs, $good_config;
3331 save_config \%bad_configs, $bad_config;
3332
3333
3334 if (defined($config_bisect_check) && $config_bisect_check ne "0") {
3335 if ($config_bisect_check ne "good") {
3336 doprint "Testing bad config\n";
3337
3338 $ret = run_bisect_test $type, "useconfig:$bad_config";
3339 if ($ret) {
3340 fail "Bad config succeeded when expected to fail!";
3341 return 0;
3342 }
3343 }
3344 if ($config_bisect_check ne "bad") {
3345 doprint "Testing good config\n";
3346
3347 $ret = run_bisect_test $type, "useconfig:$good_config";
3348 if (!$ret) {
3349 fail "Good config failed when expected to succeed!";
3350 return 0;
3351 }
3352 }
3353 }
3354
3355 do {
3356 $ret = run_config_bisect \%good_configs, \%bad_configs;
3357 print_times;
3358 } while (!$ret);
3359
3360 return $ret if ($ret < 0);
3361
3362 success $i;
3363}
3364
3365sub patchcheck_reboot {
3366 doprint "Reboot and sleep $patchcheck_sleep_time seconds\n";
3367 reboot_to_good $patchcheck_sleep_time;
3368}
3369
3370sub patchcheck {
3371 my ($i) = @_;
3372
3373 die "PATCHCHECK_START[$i] not defined\n"
3374 if (!defined($patchcheck_start));
3375 die "PATCHCHECK_TYPE[$i] not defined\n"
3376 if (!defined($patchcheck_type));
3377
3378 my $start = $patchcheck_start;
3379
3380 my $cherry = $patchcheck_cherry;
3381 if (!defined($cherry)) {
3382 $cherry = 0;
3383 }
3384
3385 my $end = "HEAD";
3386 if (defined($patchcheck_end)) {
3387 $end = $patchcheck_end;
3388 } elsif ($cherry) {
3389 die "PATCHCHECK_END must be defined with PATCHCHECK_CHERRY\n";
3390 }
3391
3392 # Get the true sha1's since we can use things like HEAD~3
3393 $start = get_sha1($start);
3394 $end = get_sha1($end);
3395
3396 my $type = $patchcheck_type;
3397
3398 # Can't have a test without having a test to run
3399 if ($type eq "test" && !defined($run_test)) {
3400 $type = "boot";
3401 }
3402
3403 if ($cherry) {
3404 open (IN, "git cherry -v $start $end|") or
3405 dodie "could not get git list";
3406 } else {
3407 open (IN, "git log --pretty=oneline $end|") or
3408 dodie "could not get git list";
3409 }
3410
3411 my @list;
3412
3413 while (<IN>) {
3414 chomp;
3415 # git cherry adds a '+' we want to remove
3416 s/^\+ //;
3417 $list[$#list+1] = $_;
3418 last if (/^$start/);
3419 }
3420 close(IN);
3421
3422 if (!$cherry) {
3423 if ($list[$#list] !~ /^$start/) {
3424 fail "SHA1 $start not found";
3425 }
3426
3427 # go backwards in the list
3428 @list = reverse @list;
3429 }
3430
3431 doprint("Going to test the following commits:\n");
3432 foreach my $l (@list) {
3433 doprint "$l\n";
3434 }
3435
3436 my $save_clean = $noclean;
3437 my %ignored_warnings;
3438
3439 if (defined($ignore_warnings)) {
3440 foreach my $sha1 (split /\s+/, $ignore_warnings) {
3441 $ignored_warnings{$sha1} = 1;
3442 }
3443 }
3444
3445 $in_patchcheck = 1;
3446 foreach my $item (@list) {
3447 my $sha1 = $item;
3448 $sha1 =~ s/^([[:xdigit:]]+).*/$1/;
3449
3450 doprint "\nProcessing commit \"$item\"\n\n";
3451
3452 run_command "git checkout $sha1" or
3453 die "Failed to checkout $sha1";
3454
3455 # only clean on the first and last patch
3456 if ($item eq $list[0] ||
3457 $item eq $list[$#list]) {
3458 $noclean = $save_clean;
3459 } else {
3460 $noclean = 1;
3461 }
3462
3463 if (defined($minconfig)) {
3464 build "useconfig:$minconfig" or return 0;
3465 } else {
3466 # ?? no config to use?
3467 build "oldconfig" or return 0;
3468 }
3469
3470 # No need to do per patch checking if warnings file exists
3471 if (!defined($warnings_file) && !defined($ignored_warnings{$sha1})) {
3472 check_patch_buildlog $sha1 or return 0;
3473 }
3474
3475 check_buildlog or return 0;
3476
3477 next if ($type eq "build");
3478
3479 my $failed = 0;
3480
3481 start_monitor_and_install or $failed = 1;
3482
3483 if (!$failed && $type ne "boot"){
3484 do_run_test or $failed = 1;
3485 }
3486 end_monitor;
3487 if ($failed) {
3488 print_times;
3489 return 0;
3490 }
3491 patchcheck_reboot;
3492 print_times;
3493 }
3494 $in_patchcheck = 0;
3495 success $i;
3496
3497 return 1;
3498}
3499
3500my %depends;
3501my %depcount;
3502my $iflevel = 0;
3503my @ifdeps;
3504
3505# prevent recursion
3506my %read_kconfigs;
3507
3508sub add_dep {
3509 # $config depends on $dep
3510 my ($config, $dep) = @_;
3511
3512 if (defined($depends{$config})) {
3513 $depends{$config} .= " " . $dep;
3514 } else {
3515 $depends{$config} = $dep;
3516 }
3517
3518 # record the number of configs depending on $dep
3519 if (defined $depcount{$dep}) {
3520 $depcount{$dep}++;
3521 } else {
3522 $depcount{$dep} = 1;
3523 }
3524}
3525
3526# taken from streamline_config.pl
3527sub read_kconfig {
3528 my ($kconfig) = @_;
3529
3530 my $state = "NONE";
3531 my $config;
3532 my @kconfigs;
3533
3534 my $cont = 0;
3535 my $line;
3536
3537
3538 if (! -f $kconfig) {
3539 doprint "file $kconfig does not exist, skipping\n";
3540 return;
3541 }
3542
3543 open(KIN, "$kconfig")
3544 or die "Can't open $kconfig";
3545 while (<KIN>) {
3546 chomp;
3547
3548 # Make sure that lines ending with \ continue
3549 if ($cont) {
3550 $_ = $line . " " . $_;
3551 }
3552
3553 if (s/\\$//) {
3554 $cont = 1;
3555 $line = $_;
3556 next;
3557 }
3558
3559 $cont = 0;
3560
3561 # collect any Kconfig sources
3562 if (/^source\s*"(.*)"/) {
3563 $kconfigs[$#kconfigs+1] = $1;
3564 }
3565
3566 # configs found
3567 if (/^\s*(menu)?config\s+(\S+)\s*$/) {
3568 $state = "NEW";
3569 $config = $2;
3570
3571 for (my $i = 0; $i < $iflevel; $i++) {
3572 add_dep $config, $ifdeps[$i];
3573 }
3574
3575 # collect the depends for the config
3576 } elsif ($state eq "NEW" && /^\s*depends\s+on\s+(.*)$/) {
3577
3578 add_dep $config, $1;
3579
3580 # Get the configs that select this config
3581 } elsif ($state eq "NEW" && /^\s*select\s+(\S+)/) {
3582
3583 # selected by depends on config
3584 add_dep $1, $config;
3585
3586 # Check for if statements
3587 } elsif (/^if\s+(.*\S)\s*$/) {
3588 my $deps = $1;
3589 # remove beginning and ending non text
3590 $deps =~ s/^[^a-zA-Z0-9_]*//;
3591 $deps =~ s/[^a-zA-Z0-9_]*$//;
3592
3593 my @deps = split /[^a-zA-Z0-9_]+/, $deps;
3594
3595 $ifdeps[$iflevel++] = join ':', @deps;
3596
3597 } elsif (/^endif/) {
3598
3599 $iflevel-- if ($iflevel);
3600
3601 # stop on "help"
3602 } elsif (/^\s*help\s*$/) {
3603 $state = "NONE";
3604 }
3605 }
3606 close(KIN);
3607
3608 # read in any configs that were found.
3609 foreach $kconfig (@kconfigs) {
3610 if (!defined($read_kconfigs{$kconfig})) {
3611 $read_kconfigs{$kconfig} = 1;
3612 read_kconfig("$builddir/$kconfig");
3613 }
3614 }
3615}
3616
3617sub read_depends {
3618 # find out which arch this is by the kconfig file
3619 open (IN, $output_config)
3620 or dodie "Failed to read $output_config";
3621 my $arch;
3622 while (<IN>) {
3623 if (m,Linux/(\S+)\s+\S+\s+Kernel Configuration,) {
3624 $arch = $1;
3625 last;
3626 }
3627 }
3628 close IN;
3629
3630 if (!defined($arch)) {
3631 doprint "Could not find arch from config file\n";
3632 doprint "no dependencies used\n";
3633 return;
3634 }
3635
3636 # arch is really the subarch, we need to know
3637 # what directory to look at.
3638 if ($arch eq "i386" || $arch eq "x86_64") {
3639 $arch = "x86";
3640 } elsif ($arch =~ /^tile/) {
3641 $arch = "tile";
3642 }
3643
3644 my $kconfig = "$builddir/arch/$arch/Kconfig";
3645
3646 if (! -f $kconfig && $arch =~ /\d$/) {
3647 my $orig = $arch;
3648 # some subarchs have numbers, truncate them
3649 $arch =~ s/\d*$//;
3650 $kconfig = "$builddir/arch/$arch/Kconfig";
3651 if (! -f $kconfig) {
3652 doprint "No idea what arch dir $orig is for\n";
3653 doprint "no dependencies used\n";
3654 return;
3655 }
3656 }
3657
3658 read_kconfig($kconfig);
3659}
3660
3661sub make_new_config {
3662 my @configs = @_;
3663
3664 open (OUT, ">$output_config")
3665 or dodie "Failed to write $output_config";
3666
3667 foreach my $config (@configs) {
3668 print OUT "$config\n";
3669 }
3670 close OUT;
3671}
3672
3673sub chomp_config {
3674 my ($config) = @_;
3675
3676 $config =~ s/CONFIG_//;
3677
3678 return $config;
3679}
3680
3681sub get_depends {
3682 my ($dep) = @_;
3683
3684 my $kconfig = chomp_config $dep;
3685
3686 $dep = $depends{"$kconfig"};
3687
3688 # the dep string we have saves the dependencies as they
3689 # were found, including expressions like ! && ||. We
3690 # want to split this out into just an array of configs.
3691
3692 my $valid = "A-Za-z_0-9";
3693
3694 my @configs;
3695
3696 while ($dep =~ /[$valid]/) {
3697
3698 if ($dep =~ /^[^$valid]*([$valid]+)/) {
3699 my $conf = "CONFIG_" . $1;
3700
3701 $configs[$#configs + 1] = $conf;
3702
3703 $dep =~ s/^[^$valid]*[$valid]+//;
3704 } else {
3705 die "this should never happen";
3706 }
3707 }
3708
3709 return @configs;
3710}
3711
3712my %min_configs;
3713my %keep_configs;
3714my %save_configs;
3715my %processed_configs;
3716my %nochange_config;
3717
3718sub test_this_config {
3719 my ($config) = @_;
3720
3721 my $found;
3722
3723 # if we already processed this config, skip it
3724 if (defined($processed_configs{$config})) {
3725 return undef;
3726 }
3727 $processed_configs{$config} = 1;
3728
3729 # if this config failed during this round, skip it
3730 if (defined($nochange_config{$config})) {
3731 return undef;
3732 }
3733
3734 my $kconfig = chomp_config $config;
3735
3736 # Test dependencies first
3737 if (defined($depends{"$kconfig"})) {
3738 my @parents = get_depends $config;
3739 foreach my $parent (@parents) {
3740 # if the parent is in the min config, check it first
3741 next if (!defined($min_configs{$parent}));
3742 $found = test_this_config($parent);
3743 if (defined($found)) {
3744 return $found;
3745 }
3746 }
3747 }
3748
3749 # Remove this config from the list of configs
3750 # do a make olddefconfig and then read the resulting
3751 # .config to make sure it is missing the config that
3752 # we had before
3753 my %configs = %min_configs;
3754 delete $configs{$config};
3755 make_new_config ((values %configs), (values %keep_configs));
3756 make_oldconfig;
3757 undef %configs;
3758 assign_configs \%configs, $output_config;
3759
3760 if (!defined($configs{$config}) || $configs{$config} =~ /^#/) {
3761 return $config;
3762 }
3763
3764 doprint "disabling config $config did not change .config\n";
3765
3766 $nochange_config{$config} = 1;
3767
3768 return undef;
3769}
3770
3771sub make_min_config {
3772 my ($i) = @_;
3773
3774 my $type = $minconfig_type;
3775 if ($type ne "boot" && $type ne "test") {
3776 fail "Invalid MIN_CONFIG_TYPE '$minconfig_type'\n" .
3777 " make_min_config works only with 'boot' and 'test'\n" and return;
3778 }
3779
3780 if (!defined($output_minconfig)) {
3781 fail "OUTPUT_MIN_CONFIG not defined" and return;
3782 }
3783
3784 # If output_minconfig exists, and the start_minconfig
3785 # came from min_config, than ask if we should use
3786 # that instead.
3787 if (-f $output_minconfig && !$start_minconfig_defined) {
3788 print "$output_minconfig exists\n";
3789 if (!defined($use_output_minconfig)) {
3790 if (read_yn " Use it as minconfig?") {
3791 $start_minconfig = $output_minconfig;
3792 }
3793 } elsif ($use_output_minconfig > 0) {
3794 doprint "Using $output_minconfig as MIN_CONFIG\n";
3795 $start_minconfig = $output_minconfig;
3796 } else {
3797 doprint "Set to still use MIN_CONFIG as starting point\n";
3798 }
3799 }
3800
3801 if (!defined($start_minconfig)) {
3802 fail "START_MIN_CONFIG or MIN_CONFIG not defined" and return;
3803 }
3804
3805 my $temp_config = "$tmpdir/temp_config";
3806
3807 # First things first. We build an allnoconfig to find
3808 # out what the defaults are that we can't touch.
3809 # Some are selections, but we really can't handle selections.
3810
3811 my $save_minconfig = $minconfig;
3812 undef $minconfig;
3813
3814 run_command "$make allnoconfig" or return 0;
3815
3816 read_depends;
3817
3818 process_config_ignore $output_config;
3819
3820 undef %save_configs;
3821 undef %min_configs;
3822
3823 if (defined($ignore_config)) {
3824 # make sure the file exists
3825 `touch $ignore_config`;
3826 assign_configs \%save_configs, $ignore_config;
3827 }
3828
3829 %keep_configs = %save_configs;
3830
3831 doprint "Load initial configs from $start_minconfig\n";
3832
3833 # Look at the current min configs, and save off all the
3834 # ones that were set via the allnoconfig
3835 assign_configs \%min_configs, $start_minconfig;
3836
3837 my @config_keys = keys %min_configs;
3838
3839 # All configs need a depcount
3840 foreach my $config (@config_keys) {
3841 my $kconfig = chomp_config $config;
3842 if (!defined $depcount{$kconfig}) {
3843 $depcount{$kconfig} = 0;
3844 }
3845 }
3846
3847 # Remove anything that was set by the make allnoconfig
3848 # we shouldn't need them as they get set for us anyway.
3849 foreach my $config (@config_keys) {
3850 # Remove anything in the ignore_config
3851 if (defined($keep_configs{$config})) {
3852 my $file = $ignore_config;
3853 $file =~ s,.*/(.*?)$,$1,;
3854 doprint "$config set by $file ... ignored\n";
3855 delete $min_configs{$config};
3856 next;
3857 }
3858 # But make sure the settings are the same. If a min config
3859 # sets a selection, we do not want to get rid of it if
3860 # it is not the same as what we have. Just move it into
3861 # the keep configs.
3862 if (defined($config_ignore{$config})) {
3863 if ($config_ignore{$config} ne $min_configs{$config}) {
3864 doprint "$config is in allnoconfig as '$config_ignore{$config}'";
3865 doprint " but it is '$min_configs{$config}' in minconfig .. keeping\n";
3866 $keep_configs{$config} = $min_configs{$config};
3867 } else {
3868 doprint "$config set by allnoconfig ... ignored\n";
3869 }
3870 delete $min_configs{$config};
3871 }
3872 }
3873
3874 my $done = 0;
3875 my $take_two = 0;
3876
3877 while (!$done) {
3878
3879 my $config;
3880 my $found;
3881
3882 # Now disable each config one by one and do a make oldconfig
3883 # till we find a config that changes our list.
3884
3885 my @test_configs = keys %min_configs;
3886
3887 # Sort keys by who is most dependent on
3888 @test_configs = sort { $depcount{chomp_config($b)} <=> $depcount{chomp_config($a)} }
3889 @test_configs ;
3890
3891 # Put configs that did not modify the config at the end.
3892 my $reset = 1;
3893 for (my $i = 0; $i < $#test_configs; $i++) {
3894 if (!defined($nochange_config{$test_configs[0]})) {
3895 $reset = 0;
3896 last;
3897 }
3898 # This config didn't change the .config last time.
3899 # Place it at the end
3900 my $config = shift @test_configs;
3901 push @test_configs, $config;
3902 }
3903
3904 # if every test config has failed to modify the .config file
3905 # in the past, then reset and start over.
3906 if ($reset) {
3907 undef %nochange_config;
3908 }
3909
3910 undef %processed_configs;
3911
3912 foreach my $config (@test_configs) {
3913
3914 $found = test_this_config $config;
3915
3916 last if (defined($found));
3917
3918 # oh well, try another config
3919 }
3920
3921 if (!defined($found)) {
3922 # we could have failed due to the nochange_config hash
3923 # reset and try again
3924 if (!$take_two) {
3925 undef %nochange_config;
3926 $take_two = 1;
3927 next;
3928 }
3929 doprint "No more configs found that we can disable\n";
3930 $done = 1;
3931 last;
3932 }
3933 $take_two = 0;
3934
3935 $config = $found;
3936
3937 doprint "Test with $config disabled\n";
3938
3939 # set in_bisect to keep build and monitor from dieing
3940 $in_bisect = 1;
3941
3942 my $failed = 0;
3943 build "oldconfig" or $failed = 1;
3944 if (!$failed) {
3945 start_monitor_and_install or $failed = 1;
3946
3947 if ($type eq "test" && !$failed) {
3948 do_run_test or $failed = 1;
3949 }
3950
3951 end_monitor;
3952 }
3953
3954 $in_bisect = 0;
3955
3956 if ($failed) {
3957 doprint "$min_configs{$config} is needed to boot the box... keeping\n";
3958 # this config is needed, add it to the ignore list.
3959 $keep_configs{$config} = $min_configs{$config};
3960 $save_configs{$config} = $min_configs{$config};
3961 delete $min_configs{$config};
3962
3963 # update new ignore configs
3964 if (defined($ignore_config)) {
3965 open (OUT, ">$temp_config")
3966 or die "Can't write to $temp_config";
3967 foreach my $config (keys %save_configs) {
3968 print OUT "$save_configs{$config}\n";
3969 }
3970 close OUT;
3971 run_command "mv $temp_config $ignore_config" or
3972 dodie "failed to copy update to $ignore_config";
3973 }
3974
3975 } else {
3976 # We booted without this config, remove it from the minconfigs.
3977 doprint "$config is not needed, disabling\n";
3978
3979 delete $min_configs{$config};
3980
3981 # Also disable anything that is not enabled in this config
3982 my %configs;
3983 assign_configs \%configs, $output_config;
3984 my @config_keys = keys %min_configs;
3985 foreach my $config (@config_keys) {
3986 if (!defined($configs{$config})) {
3987 doprint "$config is not set, disabling\n";
3988 delete $min_configs{$config};
3989 }
3990 }
3991
3992 # Save off all the current mandatory configs
3993 open (OUT, ">$temp_config")
3994 or die "Can't write to $temp_config";
3995 foreach my $config (keys %keep_configs) {
3996 print OUT "$keep_configs{$config}\n";
3997 }
3998 foreach my $config (keys %min_configs) {
3999 print OUT "$min_configs{$config}\n";
4000 }
4001 close OUT;
4002
4003 run_command "mv $temp_config $output_minconfig" or
4004 dodie "failed to copy update to $output_minconfig";
4005 }
4006
4007 doprint "Reboot and wait $sleep_time seconds\n";
4008 reboot_to_good $sleep_time;
4009 }
4010
4011 success $i;
4012 return 1;
4013}
4014
4015sub make_warnings_file {
4016 my ($i) = @_;
4017
4018 if (!defined($warnings_file)) {
4019 dodie "Must define WARNINGS_FILE for make_warnings_file test";
4020 }
4021
4022 if ($build_type eq "nobuild") {
4023 dodie "BUILD_TYPE can not be 'nobuild' for make_warnings_file test";
4024 }
4025
4026 build $build_type or dodie "Failed to build";
4027
4028 open(OUT, ">$warnings_file") or dodie "Can't create $warnings_file";
4029
4030 open(IN, $buildlog) or dodie "Can't open $buildlog";
4031 while (<IN>) {
4032
4033 # Some compilers use UTF-8 extended for quotes
4034 # for distcc heterogeneous systems, this causes issues
4035 s/$utf8_quote/'/g;
4036
4037 if (/$check_build_re/) {
4038 print OUT;
4039 }
4040 }
4041 close(IN);
4042
4043 close(OUT);
4044
4045 success $i;
4046}
4047
4048$#ARGV < 1 or die "ktest.pl version: $VERSION\n usage: ktest.pl [config-file]\n";
4049
4050if ($#ARGV == 0) {
4051 $ktest_config = $ARGV[0];
4052 if (! -f $ktest_config) {
4053 print "$ktest_config does not exist.\n";
4054 if (!read_yn "Create it?") {
4055 exit 0;
4056 }
4057 }
4058}
4059
4060if (! -f $ktest_config) {
4061 $newconfig = 1;
4062 get_test_case;
4063 open(OUT, ">$ktest_config") or die "Can not create $ktest_config";
4064 print OUT << "EOF"
4065# Generated by ktest.pl
4066#
4067
4068# PWD is a ktest.pl variable that will result in the process working
4069# directory that ktest.pl is executed in.
4070
4071# THIS_DIR is automatically assigned the PWD of the path that generated
4072# the config file. It is best to use this variable when assigning other
4073# directory paths within this directory. This allows you to easily
4074# move the test cases to other locations or to other machines.
4075#
4076THIS_DIR := $variable{"PWD"}
4077
4078# Define each test with TEST_START
4079# The config options below it will override the defaults
4080TEST_START
4081TEST_TYPE = $default{"TEST_TYPE"}
4082
4083DEFAULTS
4084EOF
4085;
4086 close(OUT);
4087}
4088read_config $ktest_config;
4089
4090if (defined($opt{"LOG_FILE"})) {
4091 $opt{"LOG_FILE"} = eval_option("LOG_FILE", $opt{"LOG_FILE"}, -1);
4092}
4093
4094# Append any configs entered in manually to the config file.
4095my @new_configs = keys %entered_configs;
4096if ($#new_configs >= 0) {
4097 print "\nAppending entered in configs to $ktest_config\n";
4098 open(OUT, ">>$ktest_config") or die "Can not append to $ktest_config";
4099 foreach my $config (@new_configs) {
4100 print OUT "$config = $entered_configs{$config}\n";
4101 $opt{$config} = process_variables($entered_configs{$config});
4102 }
4103}
4104
4105if ($opt{"CLEAR_LOG"} && defined($opt{"LOG_FILE"})) {
4106 unlink $opt{"LOG_FILE"};
4107}
4108
4109doprint "\n\nSTARTING AUTOMATED TESTS\n\n";
4110
4111for (my $i = 0, my $repeat = 1; $i <= $opt{"NUM_TESTS"}; $i += $repeat) {
4112
4113 if (!$i) {
4114 doprint "DEFAULT OPTIONS:\n";
4115 } else {
4116 doprint "\nTEST $i OPTIONS";
4117 if (defined($repeat_tests{$i})) {
4118 $repeat = $repeat_tests{$i};
4119 doprint " ITERATE $repeat";
4120 }
4121 doprint "\n";
4122 }
4123
4124 foreach my $option (sort keys %opt) {
4125
4126 if ($option =~ /\[(\d+)\]$/) {
4127 next if ($i != $1);
4128 } else {
4129 next if ($i);
4130 }
4131
4132 doprint "$option = $opt{$option}\n";
4133 }
4134}
4135
4136sub option_defined {
4137 my ($option) = @_;
4138
4139 if (defined($opt{$option}) && $opt{$option} !~ /^\s*$/) {
4140 return 1;
4141 }
4142
4143 return 0;
4144}
4145
4146sub __set_test_option {
4147 my ($name, $i) = @_;
4148
4149 my $option = "$name\[$i\]";
4150
4151 if (option_defined($option)) {
4152 return $opt{$option};
4153 }
4154
4155 foreach my $test (keys %repeat_tests) {
4156 if ($i >= $test &&
4157 $i < $test + $repeat_tests{$test}) {
4158 $option = "$name\[$test\]";
4159 if (option_defined($option)) {
4160 return $opt{$option};
4161 }
4162 }
4163 }
4164
4165 if (option_defined($name)) {
4166 return $opt{$name};
4167 }
4168
4169 return undef;
4170}
4171
4172sub set_test_option {
4173 my ($name, $i) = @_;
4174
4175 my $option = __set_test_option($name, $i);
4176 return $option if (!defined($option));
4177
4178 return eval_option($name, $option, $i);
4179}
4180
4181# First we need to do is the builds
4182for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) {
4183
4184 # Do not reboot on failing test options
4185 $no_reboot = 1;
4186 $reboot_success = 0;
4187
4188 $have_version = 0;
4189
4190 $iteration = $i;
4191
4192 $build_time = 0;
4193 $install_time = 0;
4194 $reboot_time = 0;
4195 $test_time = 0;
4196
4197 undef %force_config;
4198
4199 my $makecmd = set_test_option("MAKE_CMD", $i);
4200
4201 $outputdir = set_test_option("OUTPUT_DIR", $i);
4202 $builddir = set_test_option("BUILD_DIR", $i);
4203
4204 chdir $builddir || die "can't change directory to $builddir";
4205
4206 if (!-d $outputdir) {
4207 mkpath($outputdir) or
4208 die "can't create $outputdir";
4209 }
4210
4211 $make = "$makecmd O=$outputdir";
4212
4213 # Load all the options into their mapped variable names
4214 foreach my $opt (keys %option_map) {
4215 ${$option_map{$opt}} = set_test_option($opt, $i);
4216 }
4217
4218 $start_minconfig_defined = 1;
4219
4220 # The first test may override the PRE_KTEST option
4221 if (defined($pre_ktest) && $i == 1) {
4222 doprint "\n";
4223 run_command $pre_ktest;
4224 }
4225
4226 # Any test can override the POST_KTEST option
4227 # The last test takes precedence.
4228 if (defined($post_ktest)) {
4229 $final_post_ktest = $post_ktest;
4230 }
4231
4232 if (!defined($start_minconfig)) {
4233 $start_minconfig_defined = 0;
4234 $start_minconfig = $minconfig;
4235 }
4236
4237 if (!-d $tmpdir) {
4238 mkpath($tmpdir) or
4239 die "can't create $tmpdir";
4240 }
4241
4242 $ENV{"SSH_USER"} = $ssh_user;
4243 $ENV{"MACHINE"} = $machine;
4244
4245 $buildlog = "$tmpdir/buildlog-$machine";
4246 $testlog = "$tmpdir/testlog-$machine";
4247 $dmesg = "$tmpdir/dmesg-$machine";
4248 $output_config = "$outputdir/.config";
4249
4250 if (!$buildonly) {
4251 $target = "$ssh_user\@$machine";
4252 if ($reboot_type eq "grub") {
4253 dodie "GRUB_MENU not defined" if (!defined($grub_menu));
4254 } elsif ($reboot_type eq "grub2") {
4255 dodie "GRUB_MENU not defined" if (!defined($grub_menu));
4256 dodie "GRUB_FILE not defined" if (!defined($grub_file));
4257 } elsif ($reboot_type eq "syslinux") {
4258 dodie "SYSLINUX_LABEL not defined" if (!defined($syslinux_label));
4259 }
4260 }
4261
4262 my $run_type = $build_type;
4263 if ($test_type eq "patchcheck") {
4264 $run_type = $patchcheck_type;
4265 } elsif ($test_type eq "bisect") {
4266 $run_type = $bisect_type;
4267 } elsif ($test_type eq "config_bisect") {
4268 $run_type = $config_bisect_type;
4269 } elsif ($test_type eq "make_min_config") {
4270 $run_type = "";
4271 } elsif ($test_type eq "make_warnings_file") {
4272 $run_type = "";
4273 }
4274
4275 # mistake in config file?
4276 if (!defined($run_type)) {
4277 $run_type = "ERROR";
4278 }
4279
4280 my $installme = "";
4281 $installme = " no_install" if ($no_install);
4282
4283 my $name = "";
4284
4285 if (defined($test_name)) {
4286 $name = " ($test_name)";
4287 }
4288
4289 doprint "\n\n";
4290 doprint "RUNNING TEST $i of $opt{NUM_TESTS}$name with option $test_type $run_type$installme\n\n";
4291
4292 if (defined($pre_test)) {
4293 run_command $pre_test;
4294 }
4295
4296 unlink $dmesg;
4297 unlink $buildlog;
4298 unlink $testlog;
4299
4300 if (defined($addconfig)) {
4301 my $min = $minconfig;
4302 if (!defined($minconfig)) {
4303 $min = "";
4304 }
4305 run_command "cat $addconfig $min > $tmpdir/add_config" or
4306 dodie "Failed to create temp config";
4307 $minconfig = "$tmpdir/add_config";
4308 }
4309
4310 if (defined($checkout)) {
4311 run_command "git checkout $checkout" or
4312 die "failed to checkout $checkout";
4313 }
4314
4315 $no_reboot = 0;
4316
4317 # A test may opt to not reboot the box
4318 if ($reboot_on_success) {
4319 $reboot_success = 1;
4320 }
4321
4322 if ($test_type eq "bisect") {
4323 bisect $i;
4324 next;
4325 } elsif ($test_type eq "config_bisect") {
4326 config_bisect $i;
4327 next;
4328 } elsif ($test_type eq "patchcheck") {
4329 patchcheck $i;
4330 next;
4331 } elsif ($test_type eq "make_min_config") {
4332 make_min_config $i;
4333 next;
4334 } elsif ($test_type eq "make_warnings_file") {
4335 $no_reboot = 1;
4336 make_warnings_file $i;
4337 next;
4338 }
4339
4340 if ($build_type ne "nobuild") {
4341 build $build_type or next;
4342 check_buildlog or next;
4343 }
4344
4345 if ($test_type eq "install") {
4346 get_version;
4347 install;
4348 success $i;
4349 next;
4350 }
4351
4352 if ($test_type ne "build") {
4353 my $failed = 0;
4354 start_monitor_and_install or $failed = 1;
4355
4356 if (!$failed && $test_type ne "boot" && defined($run_test)) {
4357 do_run_test or $failed = 1;
4358 }
4359 end_monitor;
4360 if ($failed) {
4361 print_times;
4362 next;
4363 }
4364 }
4365
4366 print_times;
4367
4368 success $i;
4369}
4370
4371if (defined($final_post_ktest)) {
4372 run_command $final_post_ktest;
4373}
4374
4375if ($opt{"POWEROFF_ON_SUCCESS"}) {
4376 halt;
4377} elsif ($opt{"REBOOT_ON_SUCCESS"} && !do_not_reboot && $reboot_success) {
4378 reboot_to_good;
4379} elsif (defined($switch_to_good)) {
4380 # still need to get to the good kernel
4381 run_command $switch_to_good;
4382}
4383
4384
4385doprint "\n $successes of $opt{NUM_TESTS} tests were successful\n\n";
4386
4387exit 0;
1#!/usr/bin/perl -w
2#
3# Copyright 2010 - Steven Rostedt <srostedt@redhat.com>, Red Hat Inc.
4# Licensed under the terms of the GNU GPL License version 2
5#
6
7use strict;
8use IPC::Open2;
9use Fcntl qw(F_GETFL F_SETFL O_NONBLOCK);
10use File::Path qw(mkpath);
11use File::Copy qw(cp);
12use FileHandle;
13use FindBin;
14
15my $VERSION = "0.2";
16
17$| = 1;
18
19my %opt;
20my %repeat_tests;
21my %repeats;
22my %evals;
23
24#default opts
25my %default = (
26 "MAILER" => "sendmail", # default mailer
27 "EMAIL_ON_ERROR" => 1,
28 "EMAIL_WHEN_FINISHED" => 1,
29 "EMAIL_WHEN_CANCELED" => 0,
30 "EMAIL_WHEN_STARTED" => 0,
31 "NUM_TESTS" => 1,
32 "TEST_TYPE" => "build",
33 "BUILD_TYPE" => "randconfig",
34 "MAKE_CMD" => "make",
35 "CLOSE_CONSOLE_SIGNAL" => "INT",
36 "TIMEOUT" => 120,
37 "TMP_DIR" => "/tmp/ktest/\${MACHINE}",
38 "SLEEP_TIME" => 60, # sleep time between tests
39 "BUILD_NOCLEAN" => 0,
40 "REBOOT_ON_ERROR" => 0,
41 "POWEROFF_ON_ERROR" => 0,
42 "REBOOT_ON_SUCCESS" => 1,
43 "POWEROFF_ON_SUCCESS" => 0,
44 "BUILD_OPTIONS" => "",
45 "BISECT_SLEEP_TIME" => 60, # sleep time between bisects
46 "PATCHCHECK_SLEEP_TIME" => 60, # sleep time between patch checks
47 "CLEAR_LOG" => 0,
48 "BISECT_MANUAL" => 0,
49 "BISECT_SKIP" => 1,
50 "BISECT_TRIES" => 1,
51 "MIN_CONFIG_TYPE" => "boot",
52 "SUCCESS_LINE" => "login:",
53 "DETECT_TRIPLE_FAULT" => 1,
54 "NO_INSTALL" => 0,
55 "BOOTED_TIMEOUT" => 1,
56 "DIE_ON_FAILURE" => 1,
57 "SSH_EXEC" => "ssh \$SSH_USER\@\$MACHINE \$SSH_COMMAND",
58 "SCP_TO_TARGET" => "scp \$SRC_FILE \$SSH_USER\@\$MACHINE:\$DST_FILE",
59 "SCP_TO_TARGET_INSTALL" => "\${SCP_TO_TARGET}",
60 "REBOOT" => "ssh \$SSH_USER\@\$MACHINE reboot",
61 "STOP_AFTER_SUCCESS" => 10,
62 "STOP_AFTER_FAILURE" => 60,
63 "STOP_TEST_AFTER" => 600,
64 "MAX_MONITOR_WAIT" => 1800,
65 "GRUB_REBOOT" => "grub2-reboot",
66 "SYSLINUX" => "extlinux",
67 "SYSLINUX_PATH" => "/boot/extlinux",
68 "CONNECT_TIMEOUT" => 25,
69
70# required, and we will ask users if they don't have them but we keep the default
71# value something that is common.
72 "REBOOT_TYPE" => "grub",
73 "LOCALVERSION" => "-test",
74 "SSH_USER" => "root",
75 "BUILD_TARGET" => "arch/x86/boot/bzImage",
76 "TARGET_IMAGE" => "/boot/vmlinuz-test",
77
78 "LOG_FILE" => undef,
79 "IGNORE_UNUSED" => 0,
80);
81
82my $ktest_config = "ktest.conf";
83my $version;
84my $have_version = 0;
85my $machine;
86my $last_machine;
87my $ssh_user;
88my $tmpdir;
89my $builddir;
90my $outputdir;
91my $output_config;
92my $test_type;
93my $build_type;
94my $build_options;
95my $final_post_ktest;
96my $pre_ktest;
97my $post_ktest;
98my $pre_test;
99my $post_test;
100my $pre_build;
101my $post_build;
102my $pre_build_die;
103my $post_build_die;
104my $reboot_type;
105my $reboot_script;
106my $power_cycle;
107my $reboot;
108my $reboot_on_error;
109my $switch_to_good;
110my $switch_to_test;
111my $poweroff_on_error;
112my $reboot_on_success;
113my $die_on_failure;
114my $powercycle_after_reboot;
115my $poweroff_after_halt;
116my $max_monitor_wait;
117my $ssh_exec;
118my $scp_to_target;
119my $scp_to_target_install;
120my $power_off;
121my $grub_menu;
122my $last_grub_menu;
123my $grub_file;
124my $grub_number;
125my $grub_reboot;
126my $syslinux;
127my $syslinux_path;
128my $syslinux_label;
129my $target;
130my $make;
131my $pre_install;
132my $post_install;
133my $no_install;
134my $noclean;
135my $minconfig;
136my $start_minconfig;
137my $start_minconfig_defined;
138my $output_minconfig;
139my $minconfig_type;
140my $use_output_minconfig;
141my $warnings_file;
142my $ignore_config;
143my $ignore_errors;
144my $addconfig;
145my $in_bisect = 0;
146my $bisect_bad_commit = "";
147my $reverse_bisect;
148my $bisect_manual;
149my $bisect_skip;
150my $bisect_tries;
151my $config_bisect_good;
152my $bisect_ret_good;
153my $bisect_ret_bad;
154my $bisect_ret_skip;
155my $bisect_ret_abort;
156my $bisect_ret_default;
157my $in_patchcheck = 0;
158my $run_test;
159my $buildlog;
160my $testlog;
161my $dmesg;
162my $monitor_fp;
163my $monitor_pid;
164my $monitor_cnt = 0;
165my $sleep_time;
166my $bisect_sleep_time;
167my $patchcheck_sleep_time;
168my $ignore_warnings;
169my $store_failures;
170my $store_successes;
171my $test_name;
172my $timeout;
173my $connect_timeout;
174my $config_bisect_exec;
175my $booted_timeout;
176my $detect_triplefault;
177my $console;
178my $close_console_signal;
179my $reboot_success_line;
180my $success_line;
181my $stop_after_success;
182my $stop_after_failure;
183my $stop_test_after;
184my $build_target;
185my $target_image;
186my $checkout;
187my $localversion;
188my $iteration = 0;
189my $successes = 0;
190my $stty_orig;
191my $run_command_status = 0;
192
193my $bisect_good;
194my $bisect_bad;
195my $bisect_type;
196my $bisect_start;
197my $bisect_replay;
198my $bisect_files;
199my $bisect_reverse;
200my $bisect_check;
201
202my $config_bisect;
203my $config_bisect_type;
204my $config_bisect_check;
205
206my $patchcheck_type;
207my $patchcheck_start;
208my $patchcheck_cherry;
209my $patchcheck_end;
210
211my $build_time;
212my $install_time;
213my $reboot_time;
214my $test_time;
215
216my $pwd;
217my $dirname = $FindBin::Bin;
218
219my $mailto;
220my $mailer;
221my $mail_path;
222my $mail_command;
223my $email_on_error;
224my $email_when_finished;
225my $email_when_started;
226my $email_when_canceled;
227
228my $script_start_time = localtime();
229
230# set when a test is something other that just building or install
231# which would require more options.
232my $buildonly = 1;
233
234# tell build not to worry about warnings, even when WARNINGS_FILE is set
235my $warnings_ok = 0;
236
237# set when creating a new config
238my $newconfig = 0;
239
240my %entered_configs;
241my %config_help;
242my %variable;
243
244# force_config is the list of configs that we force enabled (or disabled)
245# in a .config file. The MIN_CONFIG and ADD_CONFIG configs.
246my %force_config;
247
248# do not force reboots on config problems
249my $no_reboot = 1;
250
251# reboot on success
252my $reboot_success = 0;
253
254my %option_map = (
255 "MAILTO" => \$mailto,
256 "MAILER" => \$mailer,
257 "MAIL_PATH" => \$mail_path,
258 "MAIL_COMMAND" => \$mail_command,
259 "EMAIL_ON_ERROR" => \$email_on_error,
260 "EMAIL_WHEN_FINISHED" => \$email_when_finished,
261 "EMAIL_WHEN_STARTED" => \$email_when_started,
262 "EMAIL_WHEN_CANCELED" => \$email_when_canceled,
263 "MACHINE" => \$machine,
264 "SSH_USER" => \$ssh_user,
265 "TMP_DIR" => \$tmpdir,
266 "OUTPUT_DIR" => \$outputdir,
267 "BUILD_DIR" => \$builddir,
268 "TEST_TYPE" => \$test_type,
269 "PRE_KTEST" => \$pre_ktest,
270 "POST_KTEST" => \$post_ktest,
271 "PRE_TEST" => \$pre_test,
272 "POST_TEST" => \$post_test,
273 "BUILD_TYPE" => \$build_type,
274 "BUILD_OPTIONS" => \$build_options,
275 "PRE_BUILD" => \$pre_build,
276 "POST_BUILD" => \$post_build,
277 "PRE_BUILD_DIE" => \$pre_build_die,
278 "POST_BUILD_DIE" => \$post_build_die,
279 "POWER_CYCLE" => \$power_cycle,
280 "REBOOT" => \$reboot,
281 "BUILD_NOCLEAN" => \$noclean,
282 "MIN_CONFIG" => \$minconfig,
283 "OUTPUT_MIN_CONFIG" => \$output_minconfig,
284 "START_MIN_CONFIG" => \$start_minconfig,
285 "MIN_CONFIG_TYPE" => \$minconfig_type,
286 "USE_OUTPUT_MIN_CONFIG" => \$use_output_minconfig,
287 "WARNINGS_FILE" => \$warnings_file,
288 "IGNORE_CONFIG" => \$ignore_config,
289 "TEST" => \$run_test,
290 "ADD_CONFIG" => \$addconfig,
291 "REBOOT_TYPE" => \$reboot_type,
292 "GRUB_MENU" => \$grub_menu,
293 "GRUB_FILE" => \$grub_file,
294 "GRUB_REBOOT" => \$grub_reboot,
295 "SYSLINUX" => \$syslinux,
296 "SYSLINUX_PATH" => \$syslinux_path,
297 "SYSLINUX_LABEL" => \$syslinux_label,
298 "PRE_INSTALL" => \$pre_install,
299 "POST_INSTALL" => \$post_install,
300 "NO_INSTALL" => \$no_install,
301 "REBOOT_SCRIPT" => \$reboot_script,
302 "REBOOT_ON_ERROR" => \$reboot_on_error,
303 "SWITCH_TO_GOOD" => \$switch_to_good,
304 "SWITCH_TO_TEST" => \$switch_to_test,
305 "POWEROFF_ON_ERROR" => \$poweroff_on_error,
306 "REBOOT_ON_SUCCESS" => \$reboot_on_success,
307 "DIE_ON_FAILURE" => \$die_on_failure,
308 "POWER_OFF" => \$power_off,
309 "POWERCYCLE_AFTER_REBOOT" => \$powercycle_after_reboot,
310 "POWEROFF_AFTER_HALT" => \$poweroff_after_halt,
311 "MAX_MONITOR_WAIT" => \$max_monitor_wait,
312 "SLEEP_TIME" => \$sleep_time,
313 "BISECT_SLEEP_TIME" => \$bisect_sleep_time,
314 "PATCHCHECK_SLEEP_TIME" => \$patchcheck_sleep_time,
315 "IGNORE_WARNINGS" => \$ignore_warnings,
316 "IGNORE_ERRORS" => \$ignore_errors,
317 "BISECT_MANUAL" => \$bisect_manual,
318 "BISECT_SKIP" => \$bisect_skip,
319 "BISECT_TRIES" => \$bisect_tries,
320 "CONFIG_BISECT_GOOD" => \$config_bisect_good,
321 "BISECT_RET_GOOD" => \$bisect_ret_good,
322 "BISECT_RET_BAD" => \$bisect_ret_bad,
323 "BISECT_RET_SKIP" => \$bisect_ret_skip,
324 "BISECT_RET_ABORT" => \$bisect_ret_abort,
325 "BISECT_RET_DEFAULT" => \$bisect_ret_default,
326 "STORE_FAILURES" => \$store_failures,
327 "STORE_SUCCESSES" => \$store_successes,
328 "TEST_NAME" => \$test_name,
329 "TIMEOUT" => \$timeout,
330 "CONNECT_TIMEOUT" => \$connect_timeout,
331 "CONFIG_BISECT_EXEC" => \$config_bisect_exec,
332 "BOOTED_TIMEOUT" => \$booted_timeout,
333 "CONSOLE" => \$console,
334 "CLOSE_CONSOLE_SIGNAL" => \$close_console_signal,
335 "DETECT_TRIPLE_FAULT" => \$detect_triplefault,
336 "SUCCESS_LINE" => \$success_line,
337 "REBOOT_SUCCESS_LINE" => \$reboot_success_line,
338 "STOP_AFTER_SUCCESS" => \$stop_after_success,
339 "STOP_AFTER_FAILURE" => \$stop_after_failure,
340 "STOP_TEST_AFTER" => \$stop_test_after,
341 "BUILD_TARGET" => \$build_target,
342 "SSH_EXEC" => \$ssh_exec,
343 "SCP_TO_TARGET" => \$scp_to_target,
344 "SCP_TO_TARGET_INSTALL" => \$scp_to_target_install,
345 "CHECKOUT" => \$checkout,
346 "TARGET_IMAGE" => \$target_image,
347 "LOCALVERSION" => \$localversion,
348
349 "BISECT_GOOD" => \$bisect_good,
350 "BISECT_BAD" => \$bisect_bad,
351 "BISECT_TYPE" => \$bisect_type,
352 "BISECT_START" => \$bisect_start,
353 "BISECT_REPLAY" => \$bisect_replay,
354 "BISECT_FILES" => \$bisect_files,
355 "BISECT_REVERSE" => \$bisect_reverse,
356 "BISECT_CHECK" => \$bisect_check,
357
358 "CONFIG_BISECT" => \$config_bisect,
359 "CONFIG_BISECT_TYPE" => \$config_bisect_type,
360 "CONFIG_BISECT_CHECK" => \$config_bisect_check,
361
362 "PATCHCHECK_TYPE" => \$patchcheck_type,
363 "PATCHCHECK_START" => \$patchcheck_start,
364 "PATCHCHECK_CHERRY" => \$patchcheck_cherry,
365 "PATCHCHECK_END" => \$patchcheck_end,
366);
367
368# Options may be used by other options, record them.
369my %used_options;
370
371# default variables that can be used
372chomp ($variable{"PWD"} = `pwd`);
373$pwd = $variable{"PWD"};
374
375$config_help{"MACHINE"} = << "EOF"
376 The machine hostname that you will test.
377 For build only tests, it is still needed to differentiate log files.
378EOF
379 ;
380$config_help{"SSH_USER"} = << "EOF"
381 The box is expected to have ssh on normal bootup, provide the user
382 (most likely root, since you need privileged operations)
383EOF
384 ;
385$config_help{"BUILD_DIR"} = << "EOF"
386 The directory that contains the Linux source code (full path).
387 You can use \${PWD} that will be the path where ktest.pl is run, or use
388 \${THIS_DIR} which is assigned \${PWD} but may be changed later.
389EOF
390 ;
391$config_help{"OUTPUT_DIR"} = << "EOF"
392 The directory that the objects will be built (full path).
393 (can not be same as BUILD_DIR)
394 You can use \${PWD} that will be the path where ktest.pl is run, or use
395 \${THIS_DIR} which is assigned \${PWD} but may be changed later.
396EOF
397 ;
398$config_help{"BUILD_TARGET"} = << "EOF"
399 The location of the compiled file to copy to the target.
400 (relative to OUTPUT_DIR)
401EOF
402 ;
403$config_help{"BUILD_OPTIONS"} = << "EOF"
404 Options to add to \"make\" when building.
405 i.e. -j20
406EOF
407 ;
408$config_help{"TARGET_IMAGE"} = << "EOF"
409 The place to put your image on the test machine.
410EOF
411 ;
412$config_help{"POWER_CYCLE"} = << "EOF"
413 A script or command to reboot the box.
414
415 Here is a digital loggers power switch example
416 POWER_CYCLE = wget --no-proxy -O /dev/null -q --auth-no-challenge 'http://admin:admin\@power/outlet?5=CCL'
417
418 Here is an example to reboot a virtual box on the current host
419 with the name "Guest".
420 POWER_CYCLE = virsh destroy Guest; sleep 5; virsh start Guest
421EOF
422 ;
423$config_help{"CONSOLE"} = << "EOF"
424 The script or command that reads the console
425
426 If you use ttywatch server, something like the following would work.
427CONSOLE = nc -d localhost 3001
428
429 For a virtual machine with guest name "Guest".
430CONSOLE = virsh console Guest
431EOF
432 ;
433$config_help{"LOCALVERSION"} = << "EOF"
434 Required version ending to differentiate the test
435 from other linux builds on the system.
436EOF
437 ;
438$config_help{"REBOOT_TYPE"} = << "EOF"
439 Way to reboot the box to the test kernel.
440 Only valid options so far are "grub", "grub2", "syslinux", and "script".
441
442 If you specify grub, it will assume grub version 1
443 and will search in /boot/grub/menu.lst for the title \$GRUB_MENU
444 and select that target to reboot to the kernel. If this is not
445 your setup, then specify "script" and have a command or script
446 specified in REBOOT_SCRIPT to boot to the target.
447
448 The entry in /boot/grub/menu.lst must be entered in manually.
449 The test will not modify that file.
450
451 If you specify grub2, then you also need to specify both \$GRUB_MENU
452 and \$GRUB_FILE.
453
454 If you specify syslinux, then you may use SYSLINUX to define the syslinux
455 command (defaults to extlinux), and SYSLINUX_PATH to specify the path to
456 the syslinux install (defaults to /boot/extlinux). But you have to specify
457 SYSLINUX_LABEL to define the label to boot to for the test kernel.
458EOF
459 ;
460$config_help{"GRUB_MENU"} = << "EOF"
461 The grub title name for the test kernel to boot
462 (Only mandatory if REBOOT_TYPE = grub or grub2)
463
464 Note, ktest.pl will not update the grub menu.lst, you need to
465 manually add an option for the test. ktest.pl will search
466 the grub menu.lst for this option to find what kernel to
467 reboot into.
468
469 For example, if in the /boot/grub/menu.lst the test kernel title has:
470 title Test Kernel
471 kernel vmlinuz-test
472 GRUB_MENU = Test Kernel
473
474 For grub2, a search of \$GRUB_FILE is performed for the lines
475 that begin with "menuentry". It will not detect submenus. The
476 menu must be a non-nested menu. Add the quotes used in the menu
477 to guarantee your selection, as the first menuentry with the content
478 of \$GRUB_MENU that is found will be used.
479EOF
480 ;
481$config_help{"GRUB_FILE"} = << "EOF"
482 If grub2 is used, the full path for the grub.cfg file is placed
483 here. Use something like /boot/grub2/grub.cfg to search.
484EOF
485 ;
486$config_help{"SYSLINUX_LABEL"} = << "EOF"
487 If syslinux is used, the label that boots the target kernel must
488 be specified with SYSLINUX_LABEL.
489EOF
490 ;
491$config_help{"REBOOT_SCRIPT"} = << "EOF"
492 A script to reboot the target into the test kernel
493 (Only mandatory if REBOOT_TYPE = script)
494EOF
495 ;
496
497sub _logit {
498 if (defined($opt{"LOG_FILE"})) {
499 open(OUT, ">> $opt{LOG_FILE}") or die "Can't write to $opt{LOG_FILE}";
500 print OUT @_;
501 close(OUT);
502 }
503}
504
505sub logit {
506 if (defined($opt{"LOG_FILE"})) {
507 _logit @_;
508 } else {
509 print @_;
510 }
511}
512
513sub doprint {
514 print @_;
515 _logit @_;
516}
517
518sub read_prompt {
519 my ($cancel, $prompt) = @_;
520
521 my $ans;
522
523 for (;;) {
524 if ($cancel) {
525 print "$prompt [y/n/C] ";
526 } else {
527 print "$prompt [Y/n] ";
528 }
529 $ans = <STDIN>;
530 chomp $ans;
531 if ($ans =~ /^\s*$/) {
532 if ($cancel) {
533 $ans = "c";
534 } else {
535 $ans = "y";
536 }
537 }
538 last if ($ans =~ /^y$/i || $ans =~ /^n$/i);
539 if ($cancel) {
540 last if ($ans =~ /^c$/i);
541 print "Please answer either 'y', 'n' or 'c'.\n";
542 } else {
543 print "Please answer either 'y' or 'n'.\n";
544 }
545 }
546 if ($ans =~ /^c/i) {
547 exit;
548 }
549 if ($ans !~ /^y$/i) {
550 return 0;
551 }
552 return 1;
553}
554
555sub read_yn {
556 my ($prompt) = @_;
557
558 return read_prompt 0, $prompt;
559}
560
561sub read_ync {
562 my ($prompt) = @_;
563
564 return read_prompt 1, $prompt;
565}
566
567sub get_mandatory_config {
568 my ($config) = @_;
569 my $ans;
570
571 return if (defined($opt{$config}));
572
573 if (defined($config_help{$config})) {
574 print "\n";
575 print $config_help{$config};
576 }
577
578 for (;;) {
579 print "$config = ";
580 if (defined($default{$config}) && length($default{$config})) {
581 print "\[$default{$config}\] ";
582 }
583 $ans = <STDIN>;
584 $ans =~ s/^\s*(.*\S)\s*$/$1/;
585 if ($ans =~ /^\s*$/) {
586 if ($default{$config}) {
587 $ans = $default{$config};
588 } else {
589 print "Your answer can not be blank\n";
590 next;
591 }
592 }
593 $entered_configs{$config} = ${ans};
594 last;
595 }
596}
597
598sub show_time {
599 my ($time) = @_;
600
601 my $hours = 0;
602 my $minutes = 0;
603
604 if ($time > 3600) {
605 $hours = int($time / 3600);
606 $time -= $hours * 3600;
607 }
608 if ($time > 60) {
609 $minutes = int($time / 60);
610 $time -= $minutes * 60;
611 }
612
613 if ($hours > 0) {
614 doprint "$hours hour";
615 doprint "s" if ($hours > 1);
616 doprint " ";
617 }
618
619 if ($minutes > 0) {
620 doprint "$minutes minute";
621 doprint "s" if ($minutes > 1);
622 doprint " ";
623 }
624
625 doprint "$time second";
626 doprint "s" if ($time != 1);
627}
628
629sub print_times {
630 doprint "\n";
631 if ($build_time) {
632 doprint "Build time: ";
633 show_time($build_time);
634 doprint "\n";
635 }
636 if ($install_time) {
637 doprint "Install time: ";
638 show_time($install_time);
639 doprint "\n";
640 }
641 if ($reboot_time) {
642 doprint "Reboot time: ";
643 show_time($reboot_time);
644 doprint "\n";
645 }
646 if ($test_time) {
647 doprint "Test time: ";
648 show_time($test_time);
649 doprint "\n";
650 }
651 # reset for iterations like bisect
652 $build_time = 0;
653 $install_time = 0;
654 $reboot_time = 0;
655 $test_time = 0;
656}
657
658sub get_mandatory_configs {
659 get_mandatory_config("MACHINE");
660 get_mandatory_config("BUILD_DIR");
661 get_mandatory_config("OUTPUT_DIR");
662
663 if ($newconfig) {
664 get_mandatory_config("BUILD_OPTIONS");
665 }
666
667 # options required for other than just building a kernel
668 if (!$buildonly) {
669 get_mandatory_config("POWER_CYCLE");
670 get_mandatory_config("CONSOLE");
671 }
672
673 # options required for install and more
674 if ($buildonly != 1) {
675 get_mandatory_config("SSH_USER");
676 get_mandatory_config("BUILD_TARGET");
677 get_mandatory_config("TARGET_IMAGE");
678 }
679
680 get_mandatory_config("LOCALVERSION");
681
682 return if ($buildonly);
683
684 my $rtype = $opt{"REBOOT_TYPE"};
685
686 if (!defined($rtype)) {
687 if (!defined($opt{"GRUB_MENU"})) {
688 get_mandatory_config("REBOOT_TYPE");
689 $rtype = $entered_configs{"REBOOT_TYPE"};
690 } else {
691 $rtype = "grub";
692 }
693 }
694
695 if ($rtype eq "grub") {
696 get_mandatory_config("GRUB_MENU");
697 }
698
699 if ($rtype eq "grub2") {
700 get_mandatory_config("GRUB_MENU");
701 get_mandatory_config("GRUB_FILE");
702 }
703
704 if ($rtype eq "syslinux") {
705 get_mandatory_config("SYSLINUX_LABEL");
706 }
707}
708
709sub process_variables {
710 my ($value, $remove_undef) = @_;
711 my $retval = "";
712
713 # We want to check for '\', and it is just easier
714 # to check the previous characet of '$' and not need
715 # to worry if '$' is the first character. By adding
716 # a space to $value, we can just check [^\\]\$ and
717 # it will still work.
718 $value = " $value";
719
720 while ($value =~ /(.*?[^\\])\$\{(.*?)\}(.*)/) {
721 my $begin = $1;
722 my $var = $2;
723 my $end = $3;
724 # append beginning of value to retval
725 $retval = "$retval$begin";
726 if (defined($variable{$var})) {
727 $retval = "$retval$variable{$var}";
728 } elsif (defined($remove_undef) && $remove_undef) {
729 # for if statements, any variable that is not defined,
730 # we simple convert to 0
731 $retval = "${retval}0";
732 } else {
733 # put back the origin piece.
734 $retval = "$retval\$\{$var\}";
735 # This could be an option that is used later, save
736 # it so we don't warn if this option is not one of
737 # ktests options.
738 $used_options{$var} = 1;
739 }
740 $value = $end;
741 }
742 $retval = "$retval$value";
743
744 # remove the space added in the beginning
745 $retval =~ s/ //;
746
747 return "$retval"
748}
749
750sub set_value {
751 my ($lvalue, $rvalue, $override, $overrides, $name) = @_;
752
753 my $prvalue = process_variables($rvalue);
754
755 if ($lvalue =~ /^(TEST|BISECT|CONFIG_BISECT)_TYPE(\[.*\])?$/ &&
756 $prvalue !~ /^(config_|)bisect$/ &&
757 $prvalue !~ /^build$/ &&
758 $buildonly) {
759
760 # Note if a test is something other than build, then we
761 # will need other mandatory options.
762 if ($prvalue ne "install") {
763 $buildonly = 0;
764 } else {
765 # install still limits some mandatory options.
766 $buildonly = 2;
767 }
768 }
769
770 if (defined($opt{$lvalue})) {
771 if (!$override || defined(${$overrides}{$lvalue})) {
772 my $extra = "";
773 if ($override) {
774 $extra = "In the same override section!\n";
775 }
776 die "$name: $.: Option $lvalue defined more than once!\n$extra";
777 }
778 ${$overrides}{$lvalue} = $prvalue;
779 }
780
781 $opt{$lvalue} = $prvalue;
782}
783
784sub set_eval {
785 my ($lvalue, $rvalue, $name) = @_;
786
787 my $prvalue = process_variables($rvalue);
788 my $arr;
789
790 if (defined($evals{$lvalue})) {
791 $arr = $evals{$lvalue};
792 } else {
793 $arr = [];
794 $evals{$lvalue} = $arr;
795 }
796
797 push @{$arr}, $rvalue;
798}
799
800sub set_variable {
801 my ($lvalue, $rvalue) = @_;
802
803 if ($rvalue =~ /^\s*$/) {
804 delete $variable{$lvalue};
805 } else {
806 $rvalue = process_variables($rvalue);
807 $variable{$lvalue} = $rvalue;
808 }
809}
810
811sub process_compare {
812 my ($lval, $cmp, $rval) = @_;
813
814 # remove whitespace
815
816 $lval =~ s/^\s*//;
817 $lval =~ s/\s*$//;
818
819 $rval =~ s/^\s*//;
820 $rval =~ s/\s*$//;
821
822 if ($cmp eq "==") {
823 return $lval eq $rval;
824 } elsif ($cmp eq "!=") {
825 return $lval ne $rval;
826 } elsif ($cmp eq "=~") {
827 return $lval =~ m/$rval/;
828 } elsif ($cmp eq "!~") {
829 return $lval !~ m/$rval/;
830 }
831
832 my $statement = "$lval $cmp $rval";
833 my $ret = eval $statement;
834
835 # $@ stores error of eval
836 if ($@) {
837 return -1;
838 }
839
840 return $ret;
841}
842
843sub value_defined {
844 my ($val) = @_;
845
846 return defined($variable{$2}) ||
847 defined($opt{$2});
848}
849
850my $d = 0;
851sub process_expression {
852 my ($name, $val) = @_;
853
854 my $c = $d++;
855
856 while ($val =~ s/\(([^\(]*?)\)/\&\&\&\&VAL\&\&\&\&/) {
857 my $express = $1;
858
859 if (process_expression($name, $express)) {
860 $val =~ s/\&\&\&\&VAL\&\&\&\&/ 1 /;
861 } else {
862 $val =~ s/\&\&\&\&VAL\&\&\&\&/ 0 /;
863 }
864 }
865
866 $d--;
867 my $OR = "\\|\\|";
868 my $AND = "\\&\\&";
869
870 while ($val =~ s/^(.*?)($OR|$AND)//) {
871 my $express = $1;
872 my $op = $2;
873
874 if (process_expression($name, $express)) {
875 if ($op eq "||") {
876 return 1;
877 }
878 } else {
879 if ($op eq "&&") {
880 return 0;
881 }
882 }
883 }
884
885 if ($val =~ /(.*)(==|\!=|>=|<=|>|<|=~|\!~)(.*)/) {
886 my $ret = process_compare($1, $2, $3);
887 if ($ret < 0) {
888 die "$name: $.: Unable to process comparison\n";
889 }
890 return $ret;
891 }
892
893 if ($val =~ /^\s*(NOT\s*)?DEFINED\s+(\S+)\s*$/) {
894 if (defined $1) {
895 return !value_defined($2);
896 } else {
897 return value_defined($2);
898 }
899 }
900
901 if ($val =~ /^\s*0\s*$/) {
902 return 0;
903 } elsif ($val =~ /^\s*\d+\s*$/) {
904 return 1;
905 }
906
907 die ("$name: $.: Undefined content $val in if statement\n");
908}
909
910sub process_if {
911 my ($name, $value) = @_;
912
913 # Convert variables and replace undefined ones with 0
914 my $val = process_variables($value, 1);
915 my $ret = process_expression $name, $val;
916
917 return $ret;
918}
919
920sub __read_config {
921 my ($config, $current_test_num) = @_;
922
923 my $in;
924 open($in, $config) || die "can't read file $config";
925
926 my $name = $config;
927 $name =~ s,.*/(.*),$1,;
928
929 my $test_num = $$current_test_num;
930 my $default = 1;
931 my $repeat = 1;
932 my $num_tests_set = 0;
933 my $skip = 0;
934 my $rest;
935 my $line;
936 my $test_case = 0;
937 my $if = 0;
938 my $if_set = 0;
939 my $override = 0;
940
941 my %overrides;
942
943 while (<$in>) {
944
945 # ignore blank lines and comments
946 next if (/^\s*$/ || /\s*\#/);
947
948 if (/^\s*(TEST_START|DEFAULTS)\b(.*)/) {
949
950 my $type = $1;
951 $rest = $2;
952 $line = $2;
953
954 my $old_test_num;
955 my $old_repeat;
956 $override = 0;
957
958 if ($type eq "TEST_START") {
959
960 if ($num_tests_set) {
961 die "$name: $.: Can not specify both NUM_TESTS and TEST_START\n";
962 }
963
964 $old_test_num = $test_num;
965 $old_repeat = $repeat;
966
967 $test_num += $repeat;
968 $default = 0;
969 $repeat = 1;
970 } else {
971 $default = 1;
972 }
973
974 # If SKIP is anywhere in the line, the command will be skipped
975 if ($rest =~ s/\s+SKIP\b//) {
976 $skip = 1;
977 } else {
978 $test_case = 1;
979 $skip = 0;
980 }
981
982 if ($rest =~ s/\sELSE\b//) {
983 if (!$if) {
984 die "$name: $.: ELSE found with out matching IF section\n$_";
985 }
986 $if = 0;
987
988 if ($if_set) {
989 $skip = 1;
990 } else {
991 $skip = 0;
992 }
993 }
994
995 if ($rest =~ s/\sIF\s+(.*)//) {
996 if (process_if($name, $1)) {
997 $if_set = 1;
998 } else {
999 $skip = 1;
1000 }
1001 $if = 1;
1002 } else {
1003 $if = 0;
1004 $if_set = 0;
1005 }
1006
1007 if (!$skip) {
1008 if ($type eq "TEST_START") {
1009 if ($rest =~ s/\s+ITERATE\s+(\d+)//) {
1010 $repeat = $1;
1011 $repeat_tests{"$test_num"} = $repeat;
1012 }
1013 } elsif ($rest =~ s/\sOVERRIDE\b//) {
1014 # DEFAULT only
1015 $override = 1;
1016 # Clear previous overrides
1017 %overrides = ();
1018 }
1019 }
1020
1021 if (!$skip && $rest !~ /^\s*$/) {
1022 die "$name: $.: Gargbage found after $type\n$_";
1023 }
1024
1025 if ($skip && $type eq "TEST_START") {
1026 $test_num = $old_test_num;
1027 $repeat = $old_repeat;
1028 }
1029
1030 } elsif (/^\s*ELSE\b(.*)$/) {
1031 if (!$if) {
1032 die "$name: $.: ELSE found with out matching IF section\n$_";
1033 }
1034 $rest = $1;
1035 if ($if_set) {
1036 $skip = 1;
1037 $rest = "";
1038 } else {
1039 $skip = 0;
1040
1041 if ($rest =~ /\sIF\s+(.*)/) {
1042 # May be a ELSE IF section.
1043 if (process_if($name, $1)) {
1044 $if_set = 1;
1045 } else {
1046 $skip = 1;
1047 }
1048 $rest = "";
1049 } else {
1050 $if = 0;
1051 }
1052 }
1053
1054 if ($rest !~ /^\s*$/) {
1055 die "$name: $.: Gargbage found after DEFAULTS\n$_";
1056 }
1057
1058 } elsif (/^\s*INCLUDE\s+(\S+)/) {
1059
1060 next if ($skip);
1061
1062 if (!$default) {
1063 die "$name: $.: INCLUDE can only be done in default sections\n$_";
1064 }
1065
1066 my $file = process_variables($1);
1067
1068 if ($file !~ m,^/,) {
1069 # check the path of the config file first
1070 if ($config =~ m,(.*)/,) {
1071 if (-f "$1/$file") {
1072 $file = "$1/$file";
1073 }
1074 }
1075 }
1076
1077 if ( ! -r $file ) {
1078 die "$name: $.: Can't read file $file\n$_";
1079 }
1080
1081 if (__read_config($file, \$test_num)) {
1082 $test_case = 1;
1083 }
1084
1085 } elsif (/^\s*([A-Z_\[\]\d]+)\s*=~\s*(.*?)\s*$/) {
1086
1087 next if ($skip);
1088
1089 my $lvalue = $1;
1090 my $rvalue = $2;
1091
1092 if ($default || $lvalue =~ /\[\d+\]$/) {
1093 set_eval($lvalue, $rvalue, $name);
1094 } else {
1095 my $val = "$lvalue\[$test_num\]";
1096 set_eval($val, $rvalue, $name);
1097 }
1098
1099 } elsif (/^\s*([A-Z_\[\]\d]+)\s*=\s*(.*?)\s*$/) {
1100
1101 next if ($skip);
1102
1103 my $lvalue = $1;
1104 my $rvalue = $2;
1105
1106 if (!$default &&
1107 ($lvalue eq "NUM_TESTS" ||
1108 $lvalue eq "LOG_FILE" ||
1109 $lvalue eq "CLEAR_LOG")) {
1110 die "$name: $.: $lvalue must be set in DEFAULTS section\n";
1111 }
1112
1113 if ($lvalue eq "NUM_TESTS") {
1114 if ($test_num) {
1115 die "$name: $.: Can not specify both NUM_TESTS and TEST_START\n";
1116 }
1117 if (!$default) {
1118 die "$name: $.: NUM_TESTS must be set in default section\n";
1119 }
1120 $num_tests_set = 1;
1121 }
1122
1123 if ($default || $lvalue =~ /\[\d+\]$/) {
1124 set_value($lvalue, $rvalue, $override, \%overrides, $name);
1125 } else {
1126 my $val = "$lvalue\[$test_num\]";
1127 set_value($val, $rvalue, $override, \%overrides, $name);
1128
1129 if ($repeat > 1) {
1130 $repeats{$val} = $repeat;
1131 }
1132 }
1133 } elsif (/^\s*([A-Z_\[\]\d]+)\s*:=\s*(.*?)\s*$/) {
1134 next if ($skip);
1135
1136 my $lvalue = $1;
1137 my $rvalue = $2;
1138
1139 # process config variables.
1140 # Config variables are only active while reading the
1141 # config and can be defined anywhere. They also ignore
1142 # TEST_START and DEFAULTS, but are skipped if they are in
1143 # on of these sections that have SKIP defined.
1144 # The save variable can be
1145 # defined multiple times and the new one simply overrides
1146 # the prevous one.
1147 set_variable($lvalue, $rvalue);
1148
1149 } else {
1150 die "$name: $.: Garbage found in config\n$_";
1151 }
1152 }
1153
1154 if ($test_num) {
1155 $test_num += $repeat - 1;
1156 $opt{"NUM_TESTS"} = $test_num;
1157 }
1158
1159 close($in);
1160
1161 $$current_test_num = $test_num;
1162
1163 return $test_case;
1164}
1165
1166sub get_test_case {
1167 print "What test case would you like to run?\n";
1168 print " (build, install or boot)\n";
1169 print " Other tests are available but require editing ktest.conf\n";
1170 print " (see tools/testing/ktest/sample.conf)\n";
1171 my $ans = <STDIN>;
1172 chomp $ans;
1173 $default{"TEST_TYPE"} = $ans;
1174}
1175
1176sub read_config {
1177 my ($config) = @_;
1178
1179 my $test_case;
1180 my $test_num = 0;
1181
1182 $test_case = __read_config $config, \$test_num;
1183
1184 # make sure we have all mandatory configs
1185 get_mandatory_configs;
1186
1187 # was a test specified?
1188 if (!$test_case) {
1189 print "No test case specified.\n";
1190 get_test_case;
1191 }
1192
1193 # set any defaults
1194
1195 foreach my $default (keys %default) {
1196 if (!defined($opt{$default})) {
1197 $opt{$default} = $default{$default};
1198 }
1199 }
1200
1201 if ($opt{"IGNORE_UNUSED"} == 1) {
1202 return;
1203 }
1204
1205 my %not_used;
1206
1207 # check if there are any stragglers (typos?)
1208 foreach my $option (keys %opt) {
1209 my $op = $option;
1210 # remove per test labels.
1211 $op =~ s/\[.*\]//;
1212 if (!exists($option_map{$op}) &&
1213 !exists($default{$op}) &&
1214 !exists($used_options{$op})) {
1215 $not_used{$op} = 1;
1216 }
1217 }
1218
1219 if (%not_used) {
1220 my $s = "s are";
1221 $s = " is" if (keys %not_used == 1);
1222 print "The following option$s not used; could be a typo:\n";
1223 foreach my $option (keys %not_used) {
1224 print "$option\n";
1225 }
1226 print "Set IGRNORE_UNUSED = 1 to have ktest ignore unused variables\n";
1227 if (!read_yn "Do you want to continue?") {
1228 exit -1;
1229 }
1230 }
1231}
1232
1233sub __eval_option {
1234 my ($name, $option, $i) = @_;
1235
1236 # Add space to evaluate the character before $
1237 $option = " $option";
1238 my $retval = "";
1239 my $repeated = 0;
1240 my $parent = 0;
1241
1242 foreach my $test (keys %repeat_tests) {
1243 if ($i >= $test &&
1244 $i < $test + $repeat_tests{$test}) {
1245
1246 $repeated = 1;
1247 $parent = $test;
1248 last;
1249 }
1250 }
1251
1252 while ($option =~ /(.*?[^\\])\$\{(.*?)\}(.*)/) {
1253 my $start = $1;
1254 my $var = $2;
1255 my $end = $3;
1256
1257 # Append beginning of line
1258 $retval = "$retval$start";
1259
1260 # If the iteration option OPT[$i] exists, then use that.
1261 # otherwise see if the default OPT (without [$i]) exists.
1262
1263 my $o = "$var\[$i\]";
1264 my $parento = "$var\[$parent\]";
1265
1266 # If a variable contains itself, use the default var
1267 if (($var eq $name) && defined($opt{$var})) {
1268 $o = $opt{$var};
1269 $retval = "$retval$o";
1270 } elsif (defined($opt{$o})) {
1271 $o = $opt{$o};
1272 $retval = "$retval$o";
1273 } elsif ($repeated && defined($opt{$parento})) {
1274 $o = $opt{$parento};
1275 $retval = "$retval$o";
1276 } elsif (defined($opt{$var})) {
1277 $o = $opt{$var};
1278 $retval = "$retval$o";
1279 } elsif ($var eq "KERNEL_VERSION" && defined($make)) {
1280 # special option KERNEL_VERSION uses kernel version
1281 get_version();
1282 $retval = "$retval$version";
1283 } else {
1284 $retval = "$retval\$\{$var\}";
1285 }
1286
1287 $option = $end;
1288 }
1289
1290 $retval = "$retval$option";
1291
1292 $retval =~ s/^ //;
1293
1294 return $retval;
1295}
1296
1297sub process_evals {
1298 my ($name, $option, $i) = @_;
1299
1300 my $option_name = "$name\[$i\]";
1301 my $ev;
1302
1303 my $old_option = $option;
1304
1305 if (defined($evals{$option_name})) {
1306 $ev = $evals{$option_name};
1307 } elsif (defined($evals{$name})) {
1308 $ev = $evals{$name};
1309 } else {
1310 return $option;
1311 }
1312
1313 for my $e (@{$ev}) {
1314 eval "\$option =~ $e";
1315 }
1316
1317 if ($option ne $old_option) {
1318 doprint("$name changed from '$old_option' to '$option'\n");
1319 }
1320
1321 return $option;
1322}
1323
1324sub eval_option {
1325 my ($name, $option, $i) = @_;
1326
1327 my $prev = "";
1328
1329 # Since an option can evaluate to another option,
1330 # keep iterating until we do not evaluate any more
1331 # options.
1332 my $r = 0;
1333 while ($prev ne $option) {
1334 # Check for recursive evaluations.
1335 # 100 deep should be more than enough.
1336 if ($r++ > 100) {
1337 die "Over 100 evaluations accurred with $option\n" .
1338 "Check for recursive variables\n";
1339 }
1340 $prev = $option;
1341 $option = __eval_option($name, $option, $i);
1342 }
1343
1344 $option = process_evals($name, $option, $i);
1345
1346 return $option;
1347}
1348
1349sub run_command;
1350sub start_monitor;
1351sub end_monitor;
1352sub wait_for_monitor;
1353
1354sub reboot {
1355 my ($time) = @_;
1356 my $powercycle = 0;
1357
1358 # test if the machine can be connected to within a few seconds
1359 my $stat = run_ssh("echo check machine status", $connect_timeout);
1360 if (!$stat) {
1361 doprint("power cycle\n");
1362 $powercycle = 1;
1363 }
1364
1365 if ($powercycle) {
1366 run_command "$power_cycle";
1367
1368 start_monitor;
1369 # flush out current monitor
1370 # May contain the reboot success line
1371 wait_for_monitor 1;
1372
1373 } else {
1374 # Make sure everything has been written to disk
1375 run_ssh("sync");
1376
1377 if (defined($time)) {
1378 start_monitor;
1379 # flush out current monitor
1380 # May contain the reboot success line
1381 wait_for_monitor 1;
1382 }
1383
1384 # try to reboot normally
1385 if (run_command $reboot) {
1386 if (defined($powercycle_after_reboot)) {
1387 sleep $powercycle_after_reboot;
1388 run_command "$power_cycle";
1389 }
1390 } else {
1391 # nope? power cycle it.
1392 run_command "$power_cycle";
1393 }
1394 }
1395
1396 if (defined($time)) {
1397
1398 # We only want to get to the new kernel, don't fail
1399 # if we stumble over a call trace.
1400 my $save_ignore_errors = $ignore_errors;
1401 $ignore_errors = 1;
1402
1403 # Look for the good kernel to boot
1404 if (wait_for_monitor($time, "Linux version")) {
1405 # reboot got stuck?
1406 doprint "Reboot did not finish. Forcing power cycle\n";
1407 run_command "$power_cycle";
1408 }
1409
1410 $ignore_errors = $save_ignore_errors;
1411
1412 # Still need to wait for the reboot to finish
1413 wait_for_monitor($time, $reboot_success_line);
1414
1415 end_monitor;
1416 }
1417}
1418
1419sub reboot_to_good {
1420 my ($time) = @_;
1421
1422 if (defined($switch_to_good)) {
1423 run_command $switch_to_good;
1424 }
1425
1426 reboot $time;
1427}
1428
1429sub do_not_reboot {
1430 my $i = $iteration;
1431
1432 return $test_type eq "build" || $no_reboot ||
1433 ($test_type eq "patchcheck" && $opt{"PATCHCHECK_TYPE[$i]"} eq "build") ||
1434 ($test_type eq "bisect" && $opt{"BISECT_TYPE[$i]"} eq "build") ||
1435 ($test_type eq "config_bisect" && $opt{"CONFIG_BISECT_TYPE[$i]"} eq "build");
1436}
1437
1438my $in_die = 0;
1439
1440sub dodie {
1441
1442 # avoid recusion
1443 return if ($in_die);
1444 $in_die = 1;
1445
1446 doprint "CRITICAL FAILURE... ", @_, "\n";
1447
1448 my $i = $iteration;
1449
1450 if ($reboot_on_error && !do_not_reboot) {
1451
1452 doprint "REBOOTING\n";
1453 reboot_to_good;
1454
1455 } elsif ($poweroff_on_error && defined($power_off)) {
1456 doprint "POWERING OFF\n";
1457 `$power_off`;
1458 }
1459
1460 if (defined($opt{"LOG_FILE"})) {
1461 print " See $opt{LOG_FILE} for more info.\n";
1462 }
1463
1464 if ($email_on_error) {
1465 send_email("KTEST: critical failure for your [$test_type] test",
1466 "Your test started at $script_start_time has failed with:\n@_\n");
1467 }
1468
1469 if ($monitor_cnt) {
1470 # restore terminal settings
1471 system("stty $stty_orig");
1472 }
1473
1474 if (defined($post_test)) {
1475 run_command $post_test;
1476 }
1477
1478 die @_, "\n";
1479}
1480
1481sub create_pty {
1482 my ($ptm, $pts) = @_;
1483 my $tmp;
1484 my $TIOCSPTLCK = 0x40045431;
1485 my $TIOCGPTN = 0x80045430;
1486
1487 sysopen($ptm, "/dev/ptmx", O_RDWR | O_NONBLOCK) or
1488 dodie "Cant open /dev/ptmx";
1489
1490 # unlockpt()
1491 $tmp = pack("i", 0);
1492 ioctl($ptm, $TIOCSPTLCK, $tmp) or
1493 dodie "ioctl TIOCSPTLCK for /dev/ptmx failed";
1494
1495 # ptsname()
1496 ioctl($ptm, $TIOCGPTN, $tmp) or
1497 dodie "ioctl TIOCGPTN for /dev/ptmx failed";
1498 $tmp = unpack("i", $tmp);
1499
1500 sysopen($pts, "/dev/pts/$tmp", O_RDWR | O_NONBLOCK) or
1501 dodie "Can't open /dev/pts/$tmp";
1502}
1503
1504sub exec_console {
1505 my ($ptm, $pts) = @_;
1506
1507 close($ptm);
1508
1509 close(\*STDIN);
1510 close(\*STDOUT);
1511 close(\*STDERR);
1512
1513 open(\*STDIN, '<&', $pts);
1514 open(\*STDOUT, '>&', $pts);
1515 open(\*STDERR, '>&', $pts);
1516
1517 close($pts);
1518
1519 exec $console or
1520 dodie "Can't open console $console";
1521}
1522
1523sub open_console {
1524 my ($ptm) = @_;
1525 my $pts = \*PTSFD;
1526 my $pid;
1527
1528 # save terminal settings
1529 $stty_orig = `stty -g`;
1530
1531 # place terminal in cbreak mode so that stdin can be read one character at
1532 # a time without having to wait for a newline
1533 system("stty -icanon -echo -icrnl");
1534
1535 create_pty($ptm, $pts);
1536
1537 $pid = fork;
1538
1539 if (!$pid) {
1540 # child
1541 exec_console($ptm, $pts)
1542 }
1543
1544 # parent
1545 close($pts);
1546
1547 return $pid;
1548
1549 open(PTSFD, "Stop perl from warning about single use of PTSFD");
1550}
1551
1552sub close_console {
1553 my ($fp, $pid) = @_;
1554
1555 doprint "kill child process $pid\n";
1556 kill $close_console_signal, $pid;
1557
1558 doprint "wait for child process $pid to exit\n";
1559 waitpid($pid, 0);
1560
1561 print "closing!\n";
1562 close($fp);
1563
1564 # restore terminal settings
1565 system("stty $stty_orig");
1566}
1567
1568sub start_monitor {
1569 if ($monitor_cnt++) {
1570 return;
1571 }
1572 $monitor_fp = \*MONFD;
1573 $monitor_pid = open_console $monitor_fp;
1574
1575 return;
1576
1577 open(MONFD, "Stop perl from warning about single use of MONFD");
1578}
1579
1580sub end_monitor {
1581 return if (!defined $console);
1582 if (--$monitor_cnt) {
1583 return;
1584 }
1585 close_console($monitor_fp, $monitor_pid);
1586}
1587
1588sub wait_for_monitor {
1589 my ($time, $stop) = @_;
1590 my $full_line = "";
1591 my $line;
1592 my $booted = 0;
1593 my $start_time = time;
1594 my $skip_call_trace = 0;
1595 my $bug = 0;
1596 my $bug_ignored = 0;
1597 my $now;
1598
1599 doprint "** Wait for monitor to settle down **\n";
1600
1601 # read the monitor and wait for the system to calm down
1602 while (!$booted) {
1603 $line = wait_for_input($monitor_fp, $time);
1604 last if (!defined($line));
1605 print "$line";
1606 $full_line .= $line;
1607
1608 if (defined($stop) && $full_line =~ /$stop/) {
1609 doprint "wait for monitor detected $stop\n";
1610 $booted = 1;
1611 }
1612
1613 if ($full_line =~ /\[ backtrace testing \]/) {
1614 $skip_call_trace = 1;
1615 }
1616
1617 if ($full_line =~ /call trace:/i) {
1618 if (!$bug && !$skip_call_trace) {
1619 if ($ignore_errors) {
1620 $bug_ignored = 1;
1621 } else {
1622 $bug = 1;
1623 }
1624 }
1625 }
1626
1627 if ($full_line =~ /\[ end of backtrace testing \]/) {
1628 $skip_call_trace = 0;
1629 }
1630
1631 if ($full_line =~ /Kernel panic -/) {
1632 $bug = 1;
1633 }
1634
1635 if ($line =~ /\n/) {
1636 $full_line = "";
1637 }
1638 $now = time;
1639 if ($now - $start_time >= $max_monitor_wait) {
1640 doprint "Exiting monitor flush due to hitting MAX_MONITOR_WAIT\n";
1641 return 1;
1642 }
1643 }
1644 print "** Monitor flushed **\n";
1645
1646 # if stop is defined but wasn't hit, return error
1647 # used by reboot (which wants to see a reboot)
1648 if (defined($stop) && !$booted) {
1649 $bug = 1;
1650 }
1651 return $bug;
1652}
1653
1654sub save_logs {
1655 my ($result, $basedir) = @_;
1656 my @t = localtime;
1657 my $date = sprintf "%04d%02d%02d%02d%02d%02d",
1658 1900+$t[5],$t[4],$t[3],$t[2],$t[1],$t[0];
1659
1660 my $type = $build_type;
1661 if ($type =~ /useconfig/) {
1662 $type = "useconfig";
1663 }
1664
1665 my $dir = "$machine-$test_type-$type-$result-$date";
1666
1667 $dir = "$basedir/$dir";
1668
1669 if (!-d $dir) {
1670 mkpath($dir) or
1671 dodie "can't create $dir";
1672 }
1673
1674 my %files = (
1675 "config" => $output_config,
1676 "buildlog" => $buildlog,
1677 "dmesg" => $dmesg,
1678 "testlog" => $testlog,
1679 );
1680
1681 while (my ($name, $source) = each(%files)) {
1682 if (-f "$source") {
1683 cp "$source", "$dir/$name" or
1684 dodie "failed to copy $source";
1685 }
1686 }
1687
1688 doprint "*** Saved info to $dir ***\n";
1689}
1690
1691sub fail {
1692
1693 if ($die_on_failure) {
1694 dodie @_;
1695 }
1696
1697 doprint "FAILED\n";
1698
1699 my $i = $iteration;
1700
1701 # no need to reboot for just building.
1702 if (!do_not_reboot) {
1703 doprint "REBOOTING\n";
1704 reboot_to_good $sleep_time;
1705 }
1706
1707 my $name = "";
1708
1709 if (defined($test_name)) {
1710 $name = " ($test_name)";
1711 }
1712
1713 print_times;
1714
1715 doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
1716 doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
1717 doprint "KTEST RESULT: TEST $i$name Failed: ", @_, "\n";
1718 doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
1719 doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
1720
1721 if (defined($store_failures)) {
1722 save_logs "fail", $store_failures;
1723 }
1724
1725 if (defined($post_test)) {
1726 run_command $post_test;
1727 }
1728
1729 return 1;
1730}
1731
1732sub run_command {
1733 my ($command, $redirect, $timeout) = @_;
1734 my $start_time;
1735 my $end_time;
1736 my $dolog = 0;
1737 my $dord = 0;
1738 my $dostdout = 0;
1739 my $pid;
1740
1741 $command =~ s/\$SSH_USER/$ssh_user/g;
1742 $command =~ s/\$MACHINE/$machine/g;
1743
1744 doprint("$command ... ");
1745 $start_time = time;
1746
1747 $pid = open(CMD, "$command 2>&1 |") or
1748 (fail "unable to exec $command" and return 0);
1749
1750 if (defined($opt{"LOG_FILE"})) {
1751 open(LOG, ">>$opt{LOG_FILE}") or
1752 dodie "failed to write to log";
1753 $dolog = 1;
1754 }
1755
1756 if (defined($redirect)) {
1757 if ($redirect eq 1) {
1758 $dostdout = 1;
1759 # Have the output of the command on its own line
1760 doprint "\n";
1761 } else {
1762 open (RD, ">$redirect") or
1763 dodie "failed to write to redirect $redirect";
1764 $dord = 1;
1765 }
1766 }
1767
1768 my $hit_timeout = 0;
1769
1770 while (1) {
1771 my $fp = \*CMD;
1772 if (defined($timeout)) {
1773 doprint "timeout = $timeout\n";
1774 }
1775 my $line = wait_for_input($fp, $timeout);
1776 if (!defined($line)) {
1777 my $now = time;
1778 if (defined($timeout) && (($now - $start_time) >= $timeout)) {
1779 doprint "Hit timeout of $timeout, killing process\n";
1780 $hit_timeout = 1;
1781 kill 9, $pid;
1782 }
1783 last;
1784 }
1785 print LOG $line if ($dolog);
1786 print RD $line if ($dord);
1787 print $line if ($dostdout);
1788 }
1789
1790 waitpid($pid, 0);
1791 # shift 8 for real exit status
1792 $run_command_status = $? >> 8;
1793
1794 close(CMD);
1795 close(LOG) if ($dolog);
1796 close(RD) if ($dord);
1797
1798 $end_time = time;
1799 my $delta = $end_time - $start_time;
1800
1801 if ($delta == 1) {
1802 doprint "[1 second] ";
1803 } else {
1804 doprint "[$delta seconds] ";
1805 }
1806
1807 if ($hit_timeout) {
1808 $run_command_status = 1;
1809 }
1810
1811 if ($run_command_status) {
1812 doprint "FAILED!\n";
1813 } else {
1814 doprint "SUCCESS\n";
1815 }
1816
1817 return !$run_command_status;
1818}
1819
1820sub run_ssh {
1821 my ($cmd, $timeout) = @_;
1822 my $cp_exec = $ssh_exec;
1823
1824 $cp_exec =~ s/\$SSH_COMMAND/$cmd/g;
1825 return run_command "$cp_exec", undef , $timeout;
1826}
1827
1828sub run_scp {
1829 my ($src, $dst, $cp_scp) = @_;
1830
1831 $cp_scp =~ s/\$SRC_FILE/$src/g;
1832 $cp_scp =~ s/\$DST_FILE/$dst/g;
1833
1834 return run_command "$cp_scp";
1835}
1836
1837sub run_scp_install {
1838 my ($src, $dst) = @_;
1839
1840 my $cp_scp = $scp_to_target_install;
1841
1842 return run_scp($src, $dst, $cp_scp);
1843}
1844
1845sub run_scp_mod {
1846 my ($src, $dst) = @_;
1847
1848 my $cp_scp = $scp_to_target;
1849
1850 return run_scp($src, $dst, $cp_scp);
1851}
1852
1853sub get_grub2_index {
1854
1855 return if (defined($grub_number) && defined($last_grub_menu) &&
1856 $last_grub_menu eq $grub_menu && defined($last_machine) &&
1857 $last_machine eq $machine);
1858
1859 doprint "Find grub2 menu ... ";
1860 $grub_number = -1;
1861
1862 my $ssh_grub = $ssh_exec;
1863 $ssh_grub =~ s,\$SSH_COMMAND,cat $grub_file,g;
1864
1865 open(IN, "$ssh_grub |")
1866 or dodie "unable to get $grub_file";
1867
1868 my $found = 0;
1869
1870 while (<IN>) {
1871 if (/^menuentry.*$grub_menu/) {
1872 $grub_number++;
1873 $found = 1;
1874 last;
1875 } elsif (/^menuentry\s|^submenu\s/) {
1876 $grub_number++;
1877 }
1878 }
1879 close(IN);
1880
1881 dodie "Could not find '$grub_menu' in $grub_file on $machine"
1882 if (!$found);
1883 doprint "$grub_number\n";
1884 $last_grub_menu = $grub_menu;
1885 $last_machine = $machine;
1886}
1887
1888sub get_grub_index {
1889
1890 if ($reboot_type eq "grub2") {
1891 get_grub2_index;
1892 return;
1893 }
1894
1895 if ($reboot_type ne "grub") {
1896 return;
1897 }
1898 return if (defined($grub_number) && defined($last_grub_menu) &&
1899 $last_grub_menu eq $grub_menu && defined($last_machine) &&
1900 $last_machine eq $machine);
1901
1902 doprint "Find grub menu ... ";
1903 $grub_number = -1;
1904
1905 my $ssh_grub = $ssh_exec;
1906 $ssh_grub =~ s,\$SSH_COMMAND,cat /boot/grub/menu.lst,g;
1907
1908 open(IN, "$ssh_grub |")
1909 or dodie "unable to get menu.lst";
1910
1911 my $found = 0;
1912
1913 while (<IN>) {
1914 if (/^\s*title\s+$grub_menu\s*$/) {
1915 $grub_number++;
1916 $found = 1;
1917 last;
1918 } elsif (/^\s*title\s/) {
1919 $grub_number++;
1920 }
1921 }
1922 close(IN);
1923
1924 dodie "Could not find '$grub_menu' in /boot/grub/menu on $machine"
1925 if (!$found);
1926 doprint "$grub_number\n";
1927 $last_grub_menu = $grub_menu;
1928 $last_machine = $machine;
1929}
1930
1931sub wait_for_input
1932{
1933 my ($fp, $time) = @_;
1934 my $start_time;
1935 my $rin;
1936 my $rout;
1937 my $nr;
1938 my $buf;
1939 my $line;
1940 my $ch;
1941
1942 if (!defined($time)) {
1943 $time = $timeout;
1944 }
1945
1946 $rin = '';
1947 vec($rin, fileno($fp), 1) = 1;
1948 vec($rin, fileno(\*STDIN), 1) = 1;
1949
1950 $start_time = time;
1951
1952 while (1) {
1953 $nr = select($rout=$rin, undef, undef, $time);
1954
1955 last if ($nr <= 0);
1956
1957 # copy data from stdin to the console
1958 if (vec($rout, fileno(\*STDIN), 1) == 1) {
1959 $nr = sysread(\*STDIN, $buf, 1000);
1960 syswrite($fp, $buf, $nr) if ($nr > 0);
1961 }
1962
1963 # The timeout is based on time waiting for the fp data
1964 if (vec($rout, fileno($fp), 1) != 1) {
1965 last if (defined($time) && (time - $start_time > $time));
1966 next;
1967 }
1968
1969 $line = "";
1970
1971 # try to read one char at a time
1972 while (sysread $fp, $ch, 1) {
1973 $line .= $ch;
1974 last if ($ch eq "\n");
1975 }
1976
1977 last if (!length($line));
1978
1979 return $line;
1980 }
1981 return undef;
1982}
1983
1984sub reboot_to {
1985 if (defined($switch_to_test)) {
1986 run_command $switch_to_test;
1987 }
1988
1989 if ($reboot_type eq "grub") {
1990 run_ssh "'(echo \"savedefault --default=$grub_number --once\" | grub --batch)'";
1991 } elsif ($reboot_type eq "grub2") {
1992 run_ssh "$grub_reboot $grub_number";
1993 } elsif ($reboot_type eq "syslinux") {
1994 run_ssh "$syslinux --once \\\"$syslinux_label\\\" $syslinux_path";
1995 } elsif (defined $reboot_script) {
1996 run_command "$reboot_script";
1997 }
1998 reboot;
1999}
2000
2001sub get_sha1 {
2002 my ($commit) = @_;
2003
2004 doprint "git rev-list --max-count=1 $commit ... ";
2005 my $sha1 = `git rev-list --max-count=1 $commit`;
2006 my $ret = $?;
2007
2008 logit $sha1;
2009
2010 if ($ret) {
2011 doprint "FAILED\n";
2012 dodie "Failed to get git $commit";
2013 }
2014
2015 print "SUCCESS\n";
2016
2017 chomp $sha1;
2018
2019 return $sha1;
2020}
2021
2022sub monitor {
2023 my $booted = 0;
2024 my $bug = 0;
2025 my $bug_ignored = 0;
2026 my $skip_call_trace = 0;
2027 my $loops;
2028
2029 my $start_time = time;
2030
2031 wait_for_monitor 5;
2032
2033 my $line;
2034 my $full_line = "";
2035
2036 open(DMESG, "> $dmesg") or
2037 dodie "unable to write to $dmesg";
2038
2039 reboot_to;
2040
2041 my $success_start;
2042 my $failure_start;
2043 my $monitor_start = time;
2044 my $done = 0;
2045 my $version_found = 0;
2046
2047 while (!$done) {
2048
2049 if ($bug && defined($stop_after_failure) &&
2050 $stop_after_failure >= 0) {
2051 my $time = $stop_after_failure - (time - $failure_start);
2052 $line = wait_for_input($monitor_fp, $time);
2053 if (!defined($line)) {
2054 doprint "bug timed out after $booted_timeout seconds\n";
2055 doprint "Test forced to stop after $stop_after_failure seconds after failure\n";
2056 last;
2057 }
2058 } elsif ($booted) {
2059 $line = wait_for_input($monitor_fp, $booted_timeout);
2060 if (!defined($line)) {
2061 my $s = $booted_timeout == 1 ? "" : "s";
2062 doprint "Successful boot found: break after $booted_timeout second$s\n";
2063 last;
2064 }
2065 } else {
2066 $line = wait_for_input($monitor_fp);
2067 if (!defined($line)) {
2068 my $s = $timeout == 1 ? "" : "s";
2069 doprint "Timed out after $timeout second$s\n";
2070 last;
2071 }
2072 }
2073
2074 doprint $line;
2075 print DMESG $line;
2076
2077 # we are not guaranteed to get a full line
2078 $full_line .= $line;
2079
2080 if ($full_line =~ /$success_line/) {
2081 $booted = 1;
2082 $success_start = time;
2083 }
2084
2085 if ($booted && defined($stop_after_success) &&
2086 $stop_after_success >= 0) {
2087 my $now = time;
2088 if ($now - $success_start >= $stop_after_success) {
2089 doprint "Test forced to stop after $stop_after_success seconds after success\n";
2090 last;
2091 }
2092 }
2093
2094 if ($full_line =~ /\[ backtrace testing \]/) {
2095 $skip_call_trace = 1;
2096 }
2097
2098 if ($full_line =~ /call trace:/i) {
2099 if (!$bug && !$skip_call_trace) {
2100 if ($ignore_errors) {
2101 $bug_ignored = 1;
2102 } else {
2103 $bug = 1;
2104 $failure_start = time;
2105 }
2106 }
2107 }
2108
2109 if ($bug && defined($stop_after_failure) &&
2110 $stop_after_failure >= 0) {
2111 my $now = time;
2112 if ($now - $failure_start >= $stop_after_failure) {
2113 doprint "Test forced to stop after $stop_after_failure seconds after failure\n";
2114 last;
2115 }
2116 }
2117
2118 if ($full_line =~ /\[ end of backtrace testing \]/) {
2119 $skip_call_trace = 0;
2120 }
2121
2122 if ($full_line =~ /Kernel panic -/) {
2123 $failure_start = time;
2124 $bug = 1;
2125 }
2126
2127 # Detect triple faults by testing the banner
2128 if ($full_line =~ /\bLinux version (\S+).*\n/) {
2129 if ($1 eq $version) {
2130 $version_found = 1;
2131 } elsif ($version_found && $detect_triplefault) {
2132 # We already booted into the kernel we are testing,
2133 # but now we booted into another kernel?
2134 # Consider this a triple fault.
2135 doprint "Already booted in Linux kernel $version, but now\n";
2136 doprint "we booted into Linux kernel $1.\n";
2137 doprint "Assuming that this is a triple fault.\n";
2138 doprint "To disable this: set DETECT_TRIPLE_FAULT to 0\n";
2139 last;
2140 }
2141 }
2142
2143 if ($line =~ /\n/) {
2144 $full_line = "";
2145 }
2146
2147 if ($stop_test_after > 0 && !$booted && !$bug) {
2148 if (time - $monitor_start > $stop_test_after) {
2149 doprint "STOP_TEST_AFTER ($stop_test_after seconds) timed out\n";
2150 $done = 1;
2151 }
2152 }
2153 }
2154
2155 my $end_time = time;
2156 $reboot_time = $end_time - $start_time;
2157
2158 close(DMESG);
2159
2160 if ($bug) {
2161 return 0 if ($in_bisect);
2162 fail "failed - got a bug report" and return 0;
2163 }
2164
2165 if (!$booted) {
2166 return 0 if ($in_bisect);
2167 fail "failed - never got a boot prompt." and return 0;
2168 }
2169
2170 if ($bug_ignored) {
2171 doprint "WARNING: Call Trace detected but ignored due to IGNORE_ERRORS=1\n";
2172 }
2173
2174 return 1;
2175}
2176
2177sub eval_kernel_version {
2178 my ($option) = @_;
2179
2180 $option =~ s/\$KERNEL_VERSION/$version/g;
2181
2182 return $option;
2183}
2184
2185sub do_post_install {
2186
2187 return if (!defined($post_install));
2188
2189 my $cp_post_install = eval_kernel_version $post_install;
2190 run_command "$cp_post_install" or
2191 dodie "Failed to run post install";
2192}
2193
2194# Sometimes the reboot fails, and will hang. We try to ssh to the box
2195# and if we fail, we force another reboot, that should powercycle it.
2196sub test_booted {
2197 if (!run_ssh "echo testing connection") {
2198 reboot $sleep_time;
2199 }
2200}
2201
2202sub install {
2203
2204 return if ($no_install);
2205
2206 my $start_time = time;
2207
2208 if (defined($pre_install)) {
2209 my $cp_pre_install = eval_kernel_version $pre_install;
2210 run_command "$cp_pre_install" or
2211 dodie "Failed to run pre install";
2212 }
2213
2214 my $cp_target = eval_kernel_version $target_image;
2215
2216 test_booted;
2217
2218 run_scp_install "$outputdir/$build_target", "$cp_target" or
2219 dodie "failed to copy image";
2220
2221 my $install_mods = 0;
2222
2223 # should we process modules?
2224 $install_mods = 0;
2225 open(IN, "$output_config") or dodie("Can't read config file");
2226 while (<IN>) {
2227 if (/CONFIG_MODULES(=y)?/) {
2228 if (defined($1)) {
2229 $install_mods = 1;
2230 last;
2231 }
2232 }
2233 }
2234 close(IN);
2235
2236 if (!$install_mods) {
2237 do_post_install;
2238 doprint "No modules needed\n";
2239 my $end_time = time;
2240 $install_time = $end_time - $start_time;
2241 return;
2242 }
2243
2244 run_command "$make INSTALL_MOD_STRIP=1 INSTALL_MOD_PATH=$tmpdir modules_install" or
2245 dodie "Failed to install modules";
2246
2247 my $modlib = "/lib/modules/$version";
2248 my $modtar = "ktest-mods.tar.bz2";
2249
2250 run_ssh "rm -rf $modlib" or
2251 dodie "failed to remove old mods: $modlib";
2252
2253 # would be nice if scp -r did not follow symbolic links
2254 run_command "cd $tmpdir && tar -cjf $modtar lib/modules/$version" or
2255 dodie "making tarball";
2256
2257 run_scp_mod "$tmpdir/$modtar", "/tmp" or
2258 dodie "failed to copy modules";
2259
2260 unlink "$tmpdir/$modtar";
2261
2262 run_ssh "'(cd / && tar xjf /tmp/$modtar)'" or
2263 dodie "failed to tar modules";
2264
2265 run_ssh "rm -f /tmp/$modtar";
2266
2267 do_post_install;
2268
2269 my $end_time = time;
2270 $install_time = $end_time - $start_time;
2271}
2272
2273sub get_version {
2274 # get the release name
2275 return if ($have_version);
2276 doprint "$make kernelrelease ... ";
2277 $version = `$make -s kernelrelease | tail -1`;
2278 chomp($version);
2279 doprint "$version\n";
2280 $have_version = 1;
2281}
2282
2283sub start_monitor_and_install {
2284 # Make sure the stable kernel has finished booting
2285
2286 # Install bisects, don't need console
2287 if (defined $console) {
2288 start_monitor;
2289 wait_for_monitor 5;
2290 end_monitor;
2291 }
2292
2293 get_grub_index;
2294 get_version;
2295 install;
2296
2297 start_monitor if (defined $console);
2298 return monitor;
2299}
2300
2301my $check_build_re = ".*:.*(warning|error|Error):.*";
2302my $utf8_quote = "\\x{e2}\\x{80}(\\x{98}|\\x{99})";
2303
2304sub process_warning_line {
2305 my ($line) = @_;
2306
2307 chomp $line;
2308
2309 # for distcc heterogeneous systems, some compilers
2310 # do things differently causing warning lines
2311 # to be slightly different. This makes an attempt
2312 # to fixe those issues.
2313
2314 # chop off the index into the line
2315 # using distcc, some compilers give different indexes
2316 # depending on white space
2317 $line =~ s/^(\s*\S+:\d+:)\d+/$1/;
2318
2319 # Some compilers use UTF-8 extended for quotes and some don't.
2320 $line =~ s/$utf8_quote/'/g;
2321
2322 return $line;
2323}
2324
2325# Read buildlog and check against warnings file for any
2326# new warnings.
2327#
2328# Returns 1 if OK
2329# 0 otherwise
2330sub check_buildlog {
2331 return 1 if (!defined $warnings_file);
2332
2333 my %warnings_list;
2334
2335 # Failed builds should not reboot the target
2336 my $save_no_reboot = $no_reboot;
2337 $no_reboot = 1;
2338
2339 if (-f $warnings_file) {
2340 open(IN, $warnings_file) or
2341 dodie "Error opening $warnings_file";
2342
2343 while (<IN>) {
2344 if (/$check_build_re/) {
2345 my $warning = process_warning_line $_;
2346
2347 $warnings_list{$warning} = 1;
2348 }
2349 }
2350 close(IN);
2351 }
2352
2353 # If warnings file didn't exist, and WARNINGS_FILE exist,
2354 # then we fail on any warning!
2355
2356 open(IN, $buildlog) or dodie "Can't open $buildlog";
2357 while (<IN>) {
2358 if (/$check_build_re/) {
2359 my $warning = process_warning_line $_;
2360
2361 if (!defined $warnings_list{$warning}) {
2362 fail "New warning found (not in $warnings_file)\n$_\n";
2363 $no_reboot = $save_no_reboot;
2364 return 0;
2365 }
2366 }
2367 }
2368 $no_reboot = $save_no_reboot;
2369 close(IN);
2370}
2371
2372sub check_patch_buildlog {
2373 my ($patch) = @_;
2374
2375 my @files = `git show $patch | diffstat -l`;
2376
2377 foreach my $file (@files) {
2378 chomp $file;
2379 }
2380
2381 open(IN, "git show $patch |") or
2382 dodie "failed to show $patch";
2383 while (<IN>) {
2384 if (m,^--- a/(.*),) {
2385 chomp $1;
2386 $files[$#files] = $1;
2387 }
2388 }
2389 close(IN);
2390
2391 open(IN, $buildlog) or dodie "Can't open $buildlog";
2392 while (<IN>) {
2393 if (/^\s*(.*?):.*(warning|error)/) {
2394 my $err = $1;
2395 foreach my $file (@files) {
2396 my $fullpath = "$builddir/$file";
2397 if ($file eq $err || $fullpath eq $err) {
2398 fail "$file built with warnings" and return 0;
2399 }
2400 }
2401 }
2402 }
2403 close(IN);
2404
2405 return 1;
2406}
2407
2408sub apply_min_config {
2409 my $outconfig = "$output_config.new";
2410
2411 # Read the config file and remove anything that
2412 # is in the force_config hash (from minconfig and others)
2413 # then add the force config back.
2414
2415 doprint "Applying minimum configurations into $output_config.new\n";
2416
2417 open (OUT, ">$outconfig") or
2418 dodie "Can't create $outconfig";
2419
2420 if (-f $output_config) {
2421 open (IN, $output_config) or
2422 dodie "Failed to open $output_config";
2423 while (<IN>) {
2424 if (/^(# )?(CONFIG_[^\s=]*)/) {
2425 next if (defined($force_config{$2}));
2426 }
2427 print OUT;
2428 }
2429 close IN;
2430 }
2431 foreach my $config (keys %force_config) {
2432 print OUT "$force_config{$config}\n";
2433 }
2434 close OUT;
2435
2436 run_command "mv $outconfig $output_config";
2437}
2438
2439sub make_oldconfig {
2440
2441 my @force_list = keys %force_config;
2442
2443 if ($#force_list >= 0) {
2444 apply_min_config;
2445 }
2446
2447 if (!run_command "$make olddefconfig") {
2448 # Perhaps olddefconfig doesn't exist in this version of the kernel
2449 # try oldnoconfig
2450 doprint "olddefconfig failed, trying make oldnoconfig\n";
2451 if (!run_command "$make oldnoconfig") {
2452 doprint "oldnoconfig failed, trying yes '' | make oldconfig\n";
2453 # try a yes '' | oldconfig
2454 run_command "yes '' | $make oldconfig" or
2455 dodie "failed make config oldconfig";
2456 }
2457 }
2458}
2459
2460# read a config file and use this to force new configs.
2461sub load_force_config {
2462 my ($config) = @_;
2463
2464 doprint "Loading force configs from $config\n";
2465 open(IN, $config) or
2466 dodie "failed to read $config";
2467 while (<IN>) {
2468 chomp;
2469 if (/^(CONFIG[^\s=]*)(\s*=.*)/) {
2470 $force_config{$1} = $_;
2471 } elsif (/^# (CONFIG_\S*) is not set/) {
2472 $force_config{$1} = $_;
2473 }
2474 }
2475 close IN;
2476}
2477
2478sub build {
2479 my ($type) = @_;
2480
2481 unlink $buildlog;
2482
2483 my $start_time = time;
2484
2485 # Failed builds should not reboot the target
2486 my $save_no_reboot = $no_reboot;
2487 $no_reboot = 1;
2488
2489 # Calculate a new version from here.
2490 $have_version = 0;
2491
2492 if (defined($pre_build)) {
2493 my $ret = run_command $pre_build;
2494 if (!$ret && defined($pre_build_die) &&
2495 $pre_build_die) {
2496 dodie "failed to pre_build\n";
2497 }
2498 }
2499
2500 if ($type =~ /^useconfig:(.*)/) {
2501 run_command "cp $1 $output_config" or
2502 dodie "could not copy $1 to .config";
2503
2504 $type = "oldconfig";
2505 }
2506
2507 # old config can ask questions
2508 if ($type eq "oldconfig") {
2509 $type = "olddefconfig";
2510
2511 # allow for empty configs
2512 run_command "touch $output_config";
2513
2514 if (!$noclean) {
2515 run_command "mv $output_config $outputdir/config_temp" or
2516 dodie "moving .config";
2517
2518 run_command "$make mrproper" or dodie "make mrproper";
2519
2520 run_command "mv $outputdir/config_temp $output_config" or
2521 dodie "moving config_temp";
2522 }
2523
2524 } elsif (!$noclean) {
2525 unlink "$output_config";
2526 run_command "$make mrproper" or
2527 dodie "make mrproper";
2528 }
2529
2530 # add something to distinguish this build
2531 open(OUT, "> $outputdir/localversion") or dodie("Can't make localversion file");
2532 print OUT "$localversion\n";
2533 close(OUT);
2534
2535 if (defined($minconfig)) {
2536 load_force_config($minconfig);
2537 }
2538
2539 if ($type ne "olddefconfig") {
2540 run_command "$make $type" or
2541 dodie "failed make config";
2542 }
2543 # Run old config regardless, to enforce min configurations
2544 make_oldconfig;
2545
2546 my $build_ret = run_command "$make $build_options", $buildlog;
2547
2548 if (defined($post_build)) {
2549 # Because a post build may change the kernel version
2550 # do it now.
2551 get_version;
2552 my $ret = run_command $post_build;
2553 if (!$ret && defined($post_build_die) &&
2554 $post_build_die) {
2555 dodie "failed to post_build\n";
2556 }
2557 }
2558
2559 if (!$build_ret) {
2560 # bisect may need this to pass
2561 if ($in_bisect) {
2562 $no_reboot = $save_no_reboot;
2563 return 0;
2564 }
2565 fail "failed build" and return 0;
2566 }
2567
2568 $no_reboot = $save_no_reboot;
2569
2570 my $end_time = time;
2571 $build_time = $end_time - $start_time;
2572
2573 return 1;
2574}
2575
2576sub halt {
2577 if (!run_ssh "halt" or defined($power_off)) {
2578 if (defined($poweroff_after_halt)) {
2579 sleep $poweroff_after_halt;
2580 run_command "$power_off";
2581 }
2582 } else {
2583 # nope? the zap it!
2584 run_command "$power_off";
2585 }
2586}
2587
2588sub success {
2589 my ($i) = @_;
2590
2591 $successes++;
2592
2593 my $name = "";
2594
2595 if (defined($test_name)) {
2596 $name = " ($test_name)";
2597 }
2598
2599 print_times;
2600
2601 doprint "\n\n*******************************************\n";
2602 doprint "*******************************************\n";
2603 doprint "KTEST RESULT: TEST $i$name SUCCESS!!!! **\n";
2604 doprint "*******************************************\n";
2605 doprint "*******************************************\n";
2606
2607 if (defined($store_successes)) {
2608 save_logs "success", $store_successes;
2609 }
2610
2611 if ($i != $opt{"NUM_TESTS"} && !do_not_reboot) {
2612 doprint "Reboot and wait $sleep_time seconds\n";
2613 reboot_to_good $sleep_time;
2614 }
2615
2616 if (defined($post_test)) {
2617 run_command $post_test;
2618 }
2619}
2620
2621sub answer_bisect {
2622 for (;;) {
2623 doprint "Pass, fail, or skip? [p/f/s]";
2624 my $ans = <STDIN>;
2625 chomp $ans;
2626 if ($ans eq "p" || $ans eq "P") {
2627 return 1;
2628 } elsif ($ans eq "f" || $ans eq "F") {
2629 return 0;
2630 } elsif ($ans eq "s" || $ans eq "S") {
2631 return -1;
2632 } else {
2633 print "Please answer 'p', 'f', or 's'\n";
2634 }
2635 }
2636}
2637
2638sub child_run_test {
2639
2640 # child should have no power
2641 $reboot_on_error = 0;
2642 $poweroff_on_error = 0;
2643 $die_on_failure = 1;
2644
2645 run_command $run_test, $testlog;
2646
2647 exit $run_command_status;
2648}
2649
2650my $child_done;
2651
2652sub child_finished {
2653 $child_done = 1;
2654}
2655
2656sub do_run_test {
2657 my $child_pid;
2658 my $child_exit;
2659 my $line;
2660 my $full_line;
2661 my $bug = 0;
2662 my $bug_ignored = 0;
2663
2664 my $start_time = time;
2665
2666 wait_for_monitor 1;
2667
2668 doprint "run test $run_test\n";
2669
2670 $child_done = 0;
2671
2672 $SIG{CHLD} = qw(child_finished);
2673
2674 $child_pid = fork;
2675
2676 child_run_test if (!$child_pid);
2677
2678 $full_line = "";
2679
2680 do {
2681 $line = wait_for_input($monitor_fp, 1);
2682 if (defined($line)) {
2683
2684 # we are not guaranteed to get a full line
2685 $full_line .= $line;
2686 doprint $line;
2687
2688 if ($full_line =~ /call trace:/i) {
2689 if ($ignore_errors) {
2690 $bug_ignored = 1;
2691 } else {
2692 $bug = 1;
2693 }
2694 }
2695
2696 if ($full_line =~ /Kernel panic -/) {
2697 $bug = 1;
2698 }
2699
2700 if ($line =~ /\n/) {
2701 $full_line = "";
2702 }
2703 }
2704 } while (!$child_done && !$bug);
2705
2706 if (!$bug && $bug_ignored) {
2707 doprint "WARNING: Call Trace detected but ignored due to IGNORE_ERRORS=1\n";
2708 }
2709
2710 if ($bug) {
2711 my $failure_start = time;
2712 my $now;
2713 do {
2714 $line = wait_for_input($monitor_fp, 1);
2715 if (defined($line)) {
2716 doprint $line;
2717 }
2718 $now = time;
2719 if ($now - $failure_start >= $stop_after_failure) {
2720 last;
2721 }
2722 } while (defined($line));
2723
2724 doprint "Detected kernel crash!\n";
2725 # kill the child with extreme prejudice
2726 kill 9, $child_pid;
2727 }
2728
2729 waitpid $child_pid, 0;
2730 $child_exit = $? >> 8;
2731
2732 my $end_time = time;
2733 $test_time = $end_time - $start_time;
2734
2735 if (!$bug && $in_bisect) {
2736 if (defined($bisect_ret_good)) {
2737 if ($child_exit == $bisect_ret_good) {
2738 return 1;
2739 }
2740 }
2741 if (defined($bisect_ret_skip)) {
2742 if ($child_exit == $bisect_ret_skip) {
2743 return -1;
2744 }
2745 }
2746 if (defined($bisect_ret_abort)) {
2747 if ($child_exit == $bisect_ret_abort) {
2748 fail "test abort" and return -2;
2749 }
2750 }
2751 if (defined($bisect_ret_bad)) {
2752 if ($child_exit == $bisect_ret_skip) {
2753 return 0;
2754 }
2755 }
2756 if (defined($bisect_ret_default)) {
2757 if ($bisect_ret_default eq "good") {
2758 return 1;
2759 } elsif ($bisect_ret_default eq "bad") {
2760 return 0;
2761 } elsif ($bisect_ret_default eq "skip") {
2762 return -1;
2763 } elsif ($bisect_ret_default eq "abort") {
2764 return -2;
2765 } else {
2766 fail "unknown default action: $bisect_ret_default"
2767 and return -2;
2768 }
2769 }
2770 }
2771
2772 if ($bug || $child_exit) {
2773 return 0 if $in_bisect;
2774 fail "test failed" and return 0;
2775 }
2776 return 1;
2777}
2778
2779sub run_git_bisect {
2780 my ($command) = @_;
2781
2782 doprint "$command ... ";
2783
2784 my $output = `$command 2>&1`;
2785 my $ret = $?;
2786
2787 logit $output;
2788
2789 if ($ret) {
2790 doprint "FAILED\n";
2791 dodie "Failed to git bisect";
2792 }
2793
2794 doprint "SUCCESS\n";
2795 if ($output =~ m/^(Bisecting: .*\(roughly \d+ steps?\))\s+\[([[:xdigit:]]+)\]/) {
2796 doprint "$1 [$2]\n";
2797 } elsif ($output =~ m/^([[:xdigit:]]+) is the first bad commit/) {
2798 $bisect_bad_commit = $1;
2799 doprint "Found bad commit... $1\n";
2800 return 0;
2801 } else {
2802 # we already logged it, just print it now.
2803 print $output;
2804 }
2805
2806 return 1;
2807}
2808
2809sub bisect_reboot {
2810 doprint "Reboot and sleep $bisect_sleep_time seconds\n";
2811 reboot_to_good $bisect_sleep_time;
2812}
2813
2814# returns 1 on success, 0 on failure, -1 on skip
2815sub run_bisect_test {
2816 my ($type, $buildtype) = @_;
2817
2818 my $failed = 0;
2819 my $result;
2820 my $output;
2821 my $ret;
2822
2823 $in_bisect = 1;
2824
2825 build $buildtype or $failed = 1;
2826
2827 if ($type ne "build") {
2828 if ($failed && $bisect_skip) {
2829 $in_bisect = 0;
2830 return -1;
2831 }
2832 dodie "Failed on build" if $failed;
2833
2834 # Now boot the box
2835 start_monitor_and_install or $failed = 1;
2836
2837 if ($type ne "boot") {
2838 if ($failed && $bisect_skip) {
2839 end_monitor;
2840 bisect_reboot;
2841 $in_bisect = 0;
2842 return -1;
2843 }
2844 dodie "Failed on boot" if $failed;
2845
2846 do_run_test or $failed = 1;
2847 }
2848 end_monitor;
2849 }
2850
2851 if ($failed) {
2852 $result = 0;
2853 } else {
2854 $result = 1;
2855 }
2856
2857 # reboot the box to a kernel we can ssh to
2858 if ($type ne "build") {
2859 bisect_reboot;
2860 }
2861 $in_bisect = 0;
2862
2863 return $result;
2864}
2865
2866sub run_bisect {
2867 my ($type) = @_;
2868 my $buildtype = "oldconfig";
2869
2870 # We should have a minconfig to use?
2871 if (defined($minconfig)) {
2872 $buildtype = "useconfig:$minconfig";
2873 }
2874
2875 # If the user sets bisect_tries to less than 1, then no tries
2876 # is a success.
2877 my $ret = 1;
2878
2879 # Still let the user manually decide that though.
2880 if ($bisect_tries < 1 && $bisect_manual) {
2881 $ret = answer_bisect;
2882 }
2883
2884 for (my $i = 0; $i < $bisect_tries; $i++) {
2885 if ($bisect_tries > 1) {
2886 my $t = $i + 1;
2887 doprint("Running bisect trial $t of $bisect_tries:\n");
2888 }
2889 $ret = run_bisect_test $type, $buildtype;
2890
2891 if ($bisect_manual) {
2892 $ret = answer_bisect;
2893 }
2894
2895 last if (!$ret);
2896 }
2897
2898 # Are we looking for where it worked, not failed?
2899 if ($reverse_bisect && $ret >= 0) {
2900 $ret = !$ret;
2901 }
2902
2903 if ($ret > 0) {
2904 return "good";
2905 } elsif ($ret == 0) {
2906 return "bad";
2907 } elsif ($bisect_skip) {
2908 doprint "HIT A BAD COMMIT ... SKIPPING\n";
2909 return "skip";
2910 }
2911}
2912
2913sub update_bisect_replay {
2914 my $tmp_log = "$tmpdir/ktest_bisect_log";
2915 run_command "git bisect log > $tmp_log" or
2916 dodie "can't create bisect log";
2917 return $tmp_log;
2918}
2919
2920sub bisect {
2921 my ($i) = @_;
2922
2923 my $result;
2924
2925 dodie "BISECT_GOOD[$i] not defined\n" if (!defined($bisect_good));
2926 dodie "BISECT_BAD[$i] not defined\n" if (!defined($bisect_bad));
2927 dodie "BISECT_TYPE[$i] not defined\n" if (!defined($bisect_type));
2928
2929 my $good = $bisect_good;
2930 my $bad = $bisect_bad;
2931 my $type = $bisect_type;
2932 my $start = $bisect_start;
2933 my $replay = $bisect_replay;
2934 my $start_files = $bisect_files;
2935
2936 if (defined($start_files)) {
2937 $start_files = " -- " . $start_files;
2938 } else {
2939 $start_files = "";
2940 }
2941
2942 # convert to true sha1's
2943 $good = get_sha1($good);
2944 $bad = get_sha1($bad);
2945
2946 if (defined($bisect_reverse) && $bisect_reverse == 1) {
2947 doprint "Performing a reverse bisect (bad is good, good is bad!)\n";
2948 $reverse_bisect = 1;
2949 } else {
2950 $reverse_bisect = 0;
2951 }
2952
2953 # Can't have a test without having a test to run
2954 if ($type eq "test" && !defined($run_test)) {
2955 $type = "boot";
2956 }
2957
2958 # Check if a bisect was running
2959 my $bisect_start_file = "$builddir/.git/BISECT_START";
2960
2961 my $check = $bisect_check;
2962 my $do_check = defined($check) && $check ne "0";
2963
2964 if ( -f $bisect_start_file ) {
2965 print "Bisect in progress found\n";
2966 if ($do_check) {
2967 print " If you say yes, then no checks of good or bad will be done\n";
2968 }
2969 if (defined($replay)) {
2970 print "** BISECT_REPLAY is defined in config file **";
2971 print " Ignore config option and perform new git bisect log?\n";
2972 if (read_ync " (yes, no, or cancel) ") {
2973 $replay = update_bisect_replay;
2974 $do_check = 0;
2975 }
2976 } elsif (read_yn "read git log and continue?") {
2977 $replay = update_bisect_replay;
2978 $do_check = 0;
2979 }
2980 }
2981
2982 if ($do_check) {
2983
2984 # get current HEAD
2985 my $head = get_sha1("HEAD");
2986
2987 if ($check ne "good") {
2988 doprint "TESTING BISECT BAD [$bad]\n";
2989 run_command "git checkout $bad" or
2990 dodie "Failed to checkout $bad";
2991
2992 $result = run_bisect $type;
2993
2994 if ($result ne "bad") {
2995 fail "Tested BISECT_BAD [$bad] and it succeeded" and return 0;
2996 }
2997 }
2998
2999 if ($check ne "bad") {
3000 doprint "TESTING BISECT GOOD [$good]\n";
3001 run_command "git checkout $good" or
3002 dodie "Failed to checkout $good";
3003
3004 $result = run_bisect $type;
3005
3006 if ($result ne "good") {
3007 fail "Tested BISECT_GOOD [$good] and it failed" and return 0;
3008 }
3009 }
3010
3011 # checkout where we started
3012 run_command "git checkout $head" or
3013 dodie "Failed to checkout $head";
3014 }
3015
3016 run_command "git bisect start$start_files" or
3017 dodie "could not start bisect";
3018
3019 if (defined($replay)) {
3020 run_command "git bisect replay $replay" or
3021 dodie "failed to run replay";
3022 } else {
3023
3024 run_command "git bisect good $good" or
3025 dodie "could not set bisect good to $good";
3026
3027 run_git_bisect "git bisect bad $bad" or
3028 dodie "could not set bisect bad to $bad";
3029
3030 }
3031
3032 if (defined($start)) {
3033 run_command "git checkout $start" or
3034 dodie "failed to checkout $start";
3035 }
3036
3037 my $test;
3038 do {
3039 $result = run_bisect $type;
3040 $test = run_git_bisect "git bisect $result";
3041 print_times;
3042 } while ($test);
3043
3044 run_command "git bisect log" or
3045 dodie "could not capture git bisect log";
3046
3047 run_command "git bisect reset" or
3048 dodie "could not reset git bisect";
3049
3050 doprint "Bad commit was [$bisect_bad_commit]\n";
3051
3052 success $i;
3053}
3054
3055# config_ignore holds the configs that were set (or unset) for
3056# a good config and we will ignore these configs for the rest
3057# of a config bisect. These configs stay as they were.
3058my %config_ignore;
3059
3060# config_set holds what all configs were set as.
3061my %config_set;
3062
3063# config_off holds the set of configs that the bad config had disabled.
3064# We need to record them and set them in the .config when running
3065# olddefconfig, because olddefconfig keeps the defaults.
3066my %config_off;
3067
3068# config_off_tmp holds a set of configs to turn off for now
3069my @config_off_tmp;
3070
3071# config_list is the set of configs that are being tested
3072my %config_list;
3073my %null_config;
3074
3075my %dependency;
3076
3077sub assign_configs {
3078 my ($hash, $config) = @_;
3079
3080 doprint "Reading configs from $config\n";
3081
3082 open (IN, $config)
3083 or dodie "Failed to read $config";
3084
3085 while (<IN>) {
3086 chomp;
3087 if (/^((CONFIG\S*)=.*)/) {
3088 ${$hash}{$2} = $1;
3089 } elsif (/^(# (CONFIG\S*) is not set)/) {
3090 ${$hash}{$2} = $1;
3091 }
3092 }
3093
3094 close(IN);
3095}
3096
3097sub process_config_ignore {
3098 my ($config) = @_;
3099
3100 assign_configs \%config_ignore, $config;
3101}
3102
3103sub get_dependencies {
3104 my ($config) = @_;
3105
3106 my $arr = $dependency{$config};
3107 if (!defined($arr)) {
3108 return ();
3109 }
3110
3111 my @deps = @{$arr};
3112
3113 foreach my $dep (@{$arr}) {
3114 print "ADD DEP $dep\n";
3115 @deps = (@deps, get_dependencies $dep);
3116 }
3117
3118 return @deps;
3119}
3120
3121sub save_config {
3122 my ($pc, $file) = @_;
3123
3124 my %configs = %{$pc};
3125
3126 doprint "Saving configs into $file\n";
3127
3128 open(OUT, ">$file") or dodie "Can not write to $file";
3129
3130 foreach my $config (keys %configs) {
3131 print OUT "$configs{$config}\n";
3132 }
3133 close(OUT);
3134}
3135
3136sub create_config {
3137 my ($name, $pc) = @_;
3138
3139 doprint "Creating old config from $name configs\n";
3140
3141 save_config $pc, $output_config;
3142
3143 make_oldconfig;
3144}
3145
3146sub run_config_bisect_test {
3147 my ($type) = @_;
3148
3149 my $ret = run_bisect_test $type, "oldconfig";
3150
3151 if ($bisect_manual) {
3152 $ret = answer_bisect;
3153 }
3154
3155 return $ret;
3156}
3157
3158sub config_bisect_end {
3159 my ($good, $bad) = @_;
3160 my $diffexec = "diff -u";
3161
3162 if (-f "$builddir/scripts/diffconfig") {
3163 $diffexec = "$builddir/scripts/diffconfig";
3164 }
3165 doprint "\n\n***************************************\n";
3166 doprint "No more config bisecting possible.\n";
3167 run_command "$diffexec $good $bad", 1;
3168 doprint "***************************************\n\n";
3169}
3170
3171sub run_config_bisect {
3172 my ($good, $bad, $last_result) = @_;
3173 my $reset = "";
3174 my $cmd;
3175 my $ret;
3176
3177 if (!length($last_result)) {
3178 $reset = "-r";
3179 }
3180 run_command "$config_bisect_exec $reset -b $outputdir $good $bad $last_result", 1;
3181
3182 # config-bisect returns:
3183 # 0 if there is more to bisect
3184 # 1 for finding a good config
3185 # 2 if it can not find any more configs
3186 # -1 (255) on error
3187 if ($run_command_status) {
3188 return $run_command_status;
3189 }
3190
3191 $ret = run_config_bisect_test $config_bisect_type;
3192 if ($ret) {
3193 doprint "NEW GOOD CONFIG\n";
3194 # Return 3 for good config
3195 return 3;
3196 } else {
3197 doprint "NEW BAD CONFIG\n";
3198 # Return 4 for bad config
3199 return 4;
3200 }
3201}
3202
3203sub config_bisect {
3204 my ($i) = @_;
3205
3206 my $good_config;
3207 my $bad_config;
3208
3209 my $type = $config_bisect_type;
3210 my $ret;
3211
3212 $bad_config = $config_bisect;
3213
3214 if (defined($config_bisect_good)) {
3215 $good_config = $config_bisect_good;
3216 } elsif (defined($minconfig)) {
3217 $good_config = $minconfig;
3218 } else {
3219 doprint "No config specified, checking if defconfig works";
3220 $ret = run_bisect_test $type, "defconfig";
3221 if (!$ret) {
3222 fail "Have no good config to compare with, please set CONFIG_BISECT_GOOD";
3223 return 1;
3224 }
3225 $good_config = $output_config;
3226 }
3227
3228 if (!defined($config_bisect_exec)) {
3229 # First check the location that ktest.pl ran
3230 my @locations = ( "$pwd/config-bisect.pl",
3231 "$dirname/config-bisect.pl",
3232 "$builddir/tools/testing/ktest/config-bisect.pl",
3233 undef );
3234 foreach my $loc (@locations) {
3235 doprint "loc = $loc\n";
3236 $config_bisect_exec = $loc;
3237 last if (defined($config_bisect_exec && -x $config_bisect_exec));
3238 }
3239 if (!defined($config_bisect_exec)) {
3240 fail "Could not find an executable config-bisect.pl\n",
3241 " Set CONFIG_BISECT_EXEC to point to config-bisect.pl";
3242 return 1;
3243 }
3244 }
3245
3246 # we don't want min configs to cause issues here.
3247 doprint "Disabling 'MIN_CONFIG' for this test\n";
3248 undef $minconfig;
3249
3250 my %good_configs;
3251 my %bad_configs;
3252 my %tmp_configs;
3253
3254 if (-f "$tmpdir/good_config.tmp" || -f "$tmpdir/bad_config.tmp") {
3255 if (read_yn "Interrupted config-bisect. Continue (n - will start new)?") {
3256 if (-f "$tmpdir/good_config.tmp") {
3257 $good_config = "$tmpdir/good_config.tmp";
3258 } else {
3259 $good_config = "$tmpdir/good_config";
3260 }
3261 if (-f "$tmpdir/bad_config.tmp") {
3262 $bad_config = "$tmpdir/bad_config.tmp";
3263 } else {
3264 $bad_config = "$tmpdir/bad_config";
3265 }
3266 }
3267 }
3268 doprint "Run good configs through make oldconfig\n";
3269 assign_configs \%tmp_configs, $good_config;
3270 create_config "$good_config", \%tmp_configs;
3271 $good_config = "$tmpdir/good_config";
3272 system("cp $output_config $good_config") == 0 or dodie "cp good config";
3273
3274 doprint "Run bad configs through make oldconfig\n";
3275 assign_configs \%tmp_configs, $bad_config;
3276 create_config "$bad_config", \%tmp_configs;
3277 $bad_config = "$tmpdir/bad_config";
3278 system("cp $output_config $bad_config") == 0 or dodie "cp bad config";
3279
3280 if (defined($config_bisect_check) && $config_bisect_check ne "0") {
3281 if ($config_bisect_check ne "good") {
3282 doprint "Testing bad config\n";
3283
3284 $ret = run_bisect_test $type, "useconfig:$bad_config";
3285 if ($ret) {
3286 fail "Bad config succeeded when expected to fail!";
3287 return 0;
3288 }
3289 }
3290 if ($config_bisect_check ne "bad") {
3291 doprint "Testing good config\n";
3292
3293 $ret = run_bisect_test $type, "useconfig:$good_config";
3294 if (!$ret) {
3295 fail "Good config failed when expected to succeed!";
3296 return 0;
3297 }
3298 }
3299 }
3300
3301 my $last_run = "";
3302
3303 do {
3304 $ret = run_config_bisect $good_config, $bad_config, $last_run;
3305 if ($ret == 3) {
3306 $last_run = "good";
3307 } elsif ($ret == 4) {
3308 $last_run = "bad";
3309 }
3310 print_times;
3311 } while ($ret == 3 || $ret == 4);
3312
3313 if ($ret == 2) {
3314 config_bisect_end "$good_config.tmp", "$bad_config.tmp";
3315 }
3316
3317 return $ret if ($ret < 0);
3318
3319 success $i;
3320}
3321
3322sub patchcheck_reboot {
3323 doprint "Reboot and sleep $patchcheck_sleep_time seconds\n";
3324 reboot_to_good $patchcheck_sleep_time;
3325}
3326
3327sub patchcheck {
3328 my ($i) = @_;
3329
3330 dodie "PATCHCHECK_START[$i] not defined\n"
3331 if (!defined($patchcheck_start));
3332 dodie "PATCHCHECK_TYPE[$i] not defined\n"
3333 if (!defined($patchcheck_type));
3334
3335 my $start = $patchcheck_start;
3336
3337 my $cherry = $patchcheck_cherry;
3338 if (!defined($cherry)) {
3339 $cherry = 0;
3340 }
3341
3342 my $end = "HEAD";
3343 if (defined($patchcheck_end)) {
3344 $end = $patchcheck_end;
3345 } elsif ($cherry) {
3346 dodie "PATCHCHECK_END must be defined with PATCHCHECK_CHERRY\n";
3347 }
3348
3349 # Get the true sha1's since we can use things like HEAD~3
3350 $start = get_sha1($start);
3351 $end = get_sha1($end);
3352
3353 my $type = $patchcheck_type;
3354
3355 # Can't have a test without having a test to run
3356 if ($type eq "test" && !defined($run_test)) {
3357 $type = "boot";
3358 }
3359
3360 if ($cherry) {
3361 open (IN, "git cherry -v $start $end|") or
3362 dodie "could not get git list";
3363 } else {
3364 open (IN, "git log --pretty=oneline $end|") or
3365 dodie "could not get git list";
3366 }
3367
3368 my @list;
3369
3370 while (<IN>) {
3371 chomp;
3372 # git cherry adds a '+' we want to remove
3373 s/^\+ //;
3374 $list[$#list+1] = $_;
3375 last if (/^$start/);
3376 }
3377 close(IN);
3378
3379 if (!$cherry) {
3380 if ($list[$#list] !~ /^$start/) {
3381 fail "SHA1 $start not found";
3382 }
3383
3384 # go backwards in the list
3385 @list = reverse @list;
3386 }
3387
3388 doprint("Going to test the following commits:\n");
3389 foreach my $l (@list) {
3390 doprint "$l\n";
3391 }
3392
3393 my $save_clean = $noclean;
3394 my %ignored_warnings;
3395
3396 if (defined($ignore_warnings)) {
3397 foreach my $sha1 (split /\s+/, $ignore_warnings) {
3398 $ignored_warnings{$sha1} = 1;
3399 }
3400 }
3401
3402 $in_patchcheck = 1;
3403 foreach my $item (@list) {
3404 my $sha1 = $item;
3405 $sha1 =~ s/^([[:xdigit:]]+).*/$1/;
3406
3407 doprint "\nProcessing commit \"$item\"\n\n";
3408
3409 run_command "git checkout $sha1" or
3410 dodie "Failed to checkout $sha1";
3411
3412 # only clean on the first and last patch
3413 if ($item eq $list[0] ||
3414 $item eq $list[$#list]) {
3415 $noclean = $save_clean;
3416 } else {
3417 $noclean = 1;
3418 }
3419
3420 if (defined($minconfig)) {
3421 build "useconfig:$minconfig" or return 0;
3422 } else {
3423 # ?? no config to use?
3424 build "oldconfig" or return 0;
3425 }
3426
3427 # No need to do per patch checking if warnings file exists
3428 if (!defined($warnings_file) && !defined($ignored_warnings{$sha1})) {
3429 check_patch_buildlog $sha1 or return 0;
3430 }
3431
3432 check_buildlog or return 0;
3433
3434 next if ($type eq "build");
3435
3436 my $failed = 0;
3437
3438 start_monitor_and_install or $failed = 1;
3439
3440 if (!$failed && $type ne "boot"){
3441 do_run_test or $failed = 1;
3442 }
3443 end_monitor;
3444 if ($failed) {
3445 print_times;
3446 return 0;
3447 }
3448 patchcheck_reboot;
3449 print_times;
3450 }
3451 $in_patchcheck = 0;
3452 success $i;
3453
3454 return 1;
3455}
3456
3457my %depends;
3458my %depcount;
3459my $iflevel = 0;
3460my @ifdeps;
3461
3462# prevent recursion
3463my %read_kconfigs;
3464
3465sub add_dep {
3466 # $config depends on $dep
3467 my ($config, $dep) = @_;
3468
3469 if (defined($depends{$config})) {
3470 $depends{$config} .= " " . $dep;
3471 } else {
3472 $depends{$config} = $dep;
3473 }
3474
3475 # record the number of configs depending on $dep
3476 if (defined $depcount{$dep}) {
3477 $depcount{$dep}++;
3478 } else {
3479 $depcount{$dep} = 1;
3480 }
3481}
3482
3483# taken from streamline_config.pl
3484sub read_kconfig {
3485 my ($kconfig) = @_;
3486
3487 my $state = "NONE";
3488 my $config;
3489 my @kconfigs;
3490
3491 my $cont = 0;
3492 my $line;
3493
3494
3495 if (! -f $kconfig) {
3496 doprint "file $kconfig does not exist, skipping\n";
3497 return;
3498 }
3499
3500 open(KIN, "$kconfig")
3501 or dodie "Can't open $kconfig";
3502 while (<KIN>) {
3503 chomp;
3504
3505 # Make sure that lines ending with \ continue
3506 if ($cont) {
3507 $_ = $line . " " . $_;
3508 }
3509
3510 if (s/\\$//) {
3511 $cont = 1;
3512 $line = $_;
3513 next;
3514 }
3515
3516 $cont = 0;
3517
3518 # collect any Kconfig sources
3519 if (/^source\s*"(.*)"/) {
3520 $kconfigs[$#kconfigs+1] = $1;
3521 }
3522
3523 # configs found
3524 if (/^\s*(menu)?config\s+(\S+)\s*$/) {
3525 $state = "NEW";
3526 $config = $2;
3527
3528 for (my $i = 0; $i < $iflevel; $i++) {
3529 add_dep $config, $ifdeps[$i];
3530 }
3531
3532 # collect the depends for the config
3533 } elsif ($state eq "NEW" && /^\s*depends\s+on\s+(.*)$/) {
3534
3535 add_dep $config, $1;
3536
3537 # Get the configs that select this config
3538 } elsif ($state eq "NEW" && /^\s*select\s+(\S+)/) {
3539
3540 # selected by depends on config
3541 add_dep $1, $config;
3542
3543 # Check for if statements
3544 } elsif (/^if\s+(.*\S)\s*$/) {
3545 my $deps = $1;
3546 # remove beginning and ending non text
3547 $deps =~ s/^[^a-zA-Z0-9_]*//;
3548 $deps =~ s/[^a-zA-Z0-9_]*$//;
3549
3550 my @deps = split /[^a-zA-Z0-9_]+/, $deps;
3551
3552 $ifdeps[$iflevel++] = join ':', @deps;
3553
3554 } elsif (/^endif/) {
3555
3556 $iflevel-- if ($iflevel);
3557
3558 # stop on "help"
3559 } elsif (/^\s*help\s*$/) {
3560 $state = "NONE";
3561 }
3562 }
3563 close(KIN);
3564
3565 # read in any configs that were found.
3566 foreach $kconfig (@kconfigs) {
3567 if (!defined($read_kconfigs{$kconfig})) {
3568 $read_kconfigs{$kconfig} = 1;
3569 read_kconfig("$builddir/$kconfig");
3570 }
3571 }
3572}
3573
3574sub read_depends {
3575 # find out which arch this is by the kconfig file
3576 open (IN, $output_config)
3577 or dodie "Failed to read $output_config";
3578 my $arch;
3579 while (<IN>) {
3580 if (m,Linux/(\S+)\s+\S+\s+Kernel Configuration,) {
3581 $arch = $1;
3582 last;
3583 }
3584 }
3585 close IN;
3586
3587 if (!defined($arch)) {
3588 doprint "Could not find arch from config file\n";
3589 doprint "no dependencies used\n";
3590 return;
3591 }
3592
3593 # arch is really the subarch, we need to know
3594 # what directory to look at.
3595 if ($arch eq "i386" || $arch eq "x86_64") {
3596 $arch = "x86";
3597 }
3598
3599 my $kconfig = "$builddir/arch/$arch/Kconfig";
3600
3601 if (! -f $kconfig && $arch =~ /\d$/) {
3602 my $orig = $arch;
3603 # some subarchs have numbers, truncate them
3604 $arch =~ s/\d*$//;
3605 $kconfig = "$builddir/arch/$arch/Kconfig";
3606 if (! -f $kconfig) {
3607 doprint "No idea what arch dir $orig is for\n";
3608 doprint "no dependencies used\n";
3609 return;
3610 }
3611 }
3612
3613 read_kconfig($kconfig);
3614}
3615
3616sub make_new_config {
3617 my @configs = @_;
3618
3619 open (OUT, ">$output_config")
3620 or dodie "Failed to write $output_config";
3621
3622 foreach my $config (@configs) {
3623 print OUT "$config\n";
3624 }
3625 close OUT;
3626}
3627
3628sub chomp_config {
3629 my ($config) = @_;
3630
3631 $config =~ s/CONFIG_//;
3632
3633 return $config;
3634}
3635
3636sub get_depends {
3637 my ($dep) = @_;
3638
3639 my $kconfig = chomp_config $dep;
3640
3641 $dep = $depends{"$kconfig"};
3642
3643 # the dep string we have saves the dependencies as they
3644 # were found, including expressions like ! && ||. We
3645 # want to split this out into just an array of configs.
3646
3647 my $valid = "A-Za-z_0-9";
3648
3649 my @configs;
3650
3651 while ($dep =~ /[$valid]/) {
3652
3653 if ($dep =~ /^[^$valid]*([$valid]+)/) {
3654 my $conf = "CONFIG_" . $1;
3655
3656 $configs[$#configs + 1] = $conf;
3657
3658 $dep =~ s/^[^$valid]*[$valid]+//;
3659 } else {
3660 dodie "this should never happen";
3661 }
3662 }
3663
3664 return @configs;
3665}
3666
3667my %min_configs;
3668my %keep_configs;
3669my %save_configs;
3670my %processed_configs;
3671my %nochange_config;
3672
3673sub test_this_config {
3674 my ($config) = @_;
3675
3676 my $found;
3677
3678 # if we already processed this config, skip it
3679 if (defined($processed_configs{$config})) {
3680 return undef;
3681 }
3682 $processed_configs{$config} = 1;
3683
3684 # if this config failed during this round, skip it
3685 if (defined($nochange_config{$config})) {
3686 return undef;
3687 }
3688
3689 my $kconfig = chomp_config $config;
3690
3691 # Test dependencies first
3692 if (defined($depends{"$kconfig"})) {
3693 my @parents = get_depends $config;
3694 foreach my $parent (@parents) {
3695 # if the parent is in the min config, check it first
3696 next if (!defined($min_configs{$parent}));
3697 $found = test_this_config($parent);
3698 if (defined($found)) {
3699 return $found;
3700 }
3701 }
3702 }
3703
3704 # Remove this config from the list of configs
3705 # do a make olddefconfig and then read the resulting
3706 # .config to make sure it is missing the config that
3707 # we had before
3708 my %configs = %min_configs;
3709 delete $configs{$config};
3710 make_new_config ((values %configs), (values %keep_configs));
3711 make_oldconfig;
3712 undef %configs;
3713 assign_configs \%configs, $output_config;
3714
3715 if (!defined($configs{$config}) || $configs{$config} =~ /^#/) {
3716 return $config;
3717 }
3718
3719 doprint "disabling config $config did not change .config\n";
3720
3721 $nochange_config{$config} = 1;
3722
3723 return undef;
3724}
3725
3726sub make_min_config {
3727 my ($i) = @_;
3728
3729 my $type = $minconfig_type;
3730 if ($type ne "boot" && $type ne "test") {
3731 fail "Invalid MIN_CONFIG_TYPE '$minconfig_type'\n" .
3732 " make_min_config works only with 'boot' and 'test'\n" and return;
3733 }
3734
3735 if (!defined($output_minconfig)) {
3736 fail "OUTPUT_MIN_CONFIG not defined" and return;
3737 }
3738
3739 # If output_minconfig exists, and the start_minconfig
3740 # came from min_config, than ask if we should use
3741 # that instead.
3742 if (-f $output_minconfig && !$start_minconfig_defined) {
3743 print "$output_minconfig exists\n";
3744 if (!defined($use_output_minconfig)) {
3745 if (read_yn " Use it as minconfig?") {
3746 $start_minconfig = $output_minconfig;
3747 }
3748 } elsif ($use_output_minconfig > 0) {
3749 doprint "Using $output_minconfig as MIN_CONFIG\n";
3750 $start_minconfig = $output_minconfig;
3751 } else {
3752 doprint "Set to still use MIN_CONFIG as starting point\n";
3753 }
3754 }
3755
3756 if (!defined($start_minconfig)) {
3757 fail "START_MIN_CONFIG or MIN_CONFIG not defined" and return;
3758 }
3759
3760 my $temp_config = "$tmpdir/temp_config";
3761
3762 # First things first. We build an allnoconfig to find
3763 # out what the defaults are that we can't touch.
3764 # Some are selections, but we really can't handle selections.
3765
3766 my $save_minconfig = $minconfig;
3767 undef $minconfig;
3768
3769 run_command "$make allnoconfig" or return 0;
3770
3771 read_depends;
3772
3773 process_config_ignore $output_config;
3774
3775 undef %save_configs;
3776 undef %min_configs;
3777
3778 if (defined($ignore_config)) {
3779 # make sure the file exists
3780 `touch $ignore_config`;
3781 assign_configs \%save_configs, $ignore_config;
3782 }
3783
3784 %keep_configs = %save_configs;
3785
3786 doprint "Load initial configs from $start_minconfig\n";
3787
3788 # Look at the current min configs, and save off all the
3789 # ones that were set via the allnoconfig
3790 assign_configs \%min_configs, $start_minconfig;
3791
3792 my @config_keys = keys %min_configs;
3793
3794 # All configs need a depcount
3795 foreach my $config (@config_keys) {
3796 my $kconfig = chomp_config $config;
3797 if (!defined $depcount{$kconfig}) {
3798 $depcount{$kconfig} = 0;
3799 }
3800 }
3801
3802 # Remove anything that was set by the make allnoconfig
3803 # we shouldn't need them as they get set for us anyway.
3804 foreach my $config (@config_keys) {
3805 # Remove anything in the ignore_config
3806 if (defined($keep_configs{$config})) {
3807 my $file = $ignore_config;
3808 $file =~ s,.*/(.*?)$,$1,;
3809 doprint "$config set by $file ... ignored\n";
3810 delete $min_configs{$config};
3811 next;
3812 }
3813 # But make sure the settings are the same. If a min config
3814 # sets a selection, we do not want to get rid of it if
3815 # it is not the same as what we have. Just move it into
3816 # the keep configs.
3817 if (defined($config_ignore{$config})) {
3818 if ($config_ignore{$config} ne $min_configs{$config}) {
3819 doprint "$config is in allnoconfig as '$config_ignore{$config}'";
3820 doprint " but it is '$min_configs{$config}' in minconfig .. keeping\n";
3821 $keep_configs{$config} = $min_configs{$config};
3822 } else {
3823 doprint "$config set by allnoconfig ... ignored\n";
3824 }
3825 delete $min_configs{$config};
3826 }
3827 }
3828
3829 my $done = 0;
3830 my $take_two = 0;
3831
3832 while (!$done) {
3833
3834 my $config;
3835 my $found;
3836
3837 # Now disable each config one by one and do a make oldconfig
3838 # till we find a config that changes our list.
3839
3840 my @test_configs = keys %min_configs;
3841
3842 # Sort keys by who is most dependent on
3843 @test_configs = sort { $depcount{chomp_config($b)} <=> $depcount{chomp_config($a)} }
3844 @test_configs ;
3845
3846 # Put configs that did not modify the config at the end.
3847 my $reset = 1;
3848 for (my $i = 0; $i < $#test_configs; $i++) {
3849 if (!defined($nochange_config{$test_configs[0]})) {
3850 $reset = 0;
3851 last;
3852 }
3853 # This config didn't change the .config last time.
3854 # Place it at the end
3855 my $config = shift @test_configs;
3856 push @test_configs, $config;
3857 }
3858
3859 # if every test config has failed to modify the .config file
3860 # in the past, then reset and start over.
3861 if ($reset) {
3862 undef %nochange_config;
3863 }
3864
3865 undef %processed_configs;
3866
3867 foreach my $config (@test_configs) {
3868
3869 $found = test_this_config $config;
3870
3871 last if (defined($found));
3872
3873 # oh well, try another config
3874 }
3875
3876 if (!defined($found)) {
3877 # we could have failed due to the nochange_config hash
3878 # reset and try again
3879 if (!$take_two) {
3880 undef %nochange_config;
3881 $take_two = 1;
3882 next;
3883 }
3884 doprint "No more configs found that we can disable\n";
3885 $done = 1;
3886 last;
3887 }
3888 $take_two = 0;
3889
3890 $config = $found;
3891
3892 doprint "Test with $config disabled\n";
3893
3894 # set in_bisect to keep build and monitor from dieing
3895 $in_bisect = 1;
3896
3897 my $failed = 0;
3898 build "oldconfig" or $failed = 1;
3899 if (!$failed) {
3900 start_monitor_and_install or $failed = 1;
3901
3902 if ($type eq "test" && !$failed) {
3903 do_run_test or $failed = 1;
3904 }
3905
3906 end_monitor;
3907 }
3908
3909 $in_bisect = 0;
3910
3911 if ($failed) {
3912 doprint "$min_configs{$config} is needed to boot the box... keeping\n";
3913 # this config is needed, add it to the ignore list.
3914 $keep_configs{$config} = $min_configs{$config};
3915 $save_configs{$config} = $min_configs{$config};
3916 delete $min_configs{$config};
3917
3918 # update new ignore configs
3919 if (defined($ignore_config)) {
3920 open (OUT, ">$temp_config")
3921 or dodie "Can't write to $temp_config";
3922 foreach my $config (keys %save_configs) {
3923 print OUT "$save_configs{$config}\n";
3924 }
3925 close OUT;
3926 run_command "mv $temp_config $ignore_config" or
3927 dodie "failed to copy update to $ignore_config";
3928 }
3929
3930 } else {
3931 # We booted without this config, remove it from the minconfigs.
3932 doprint "$config is not needed, disabling\n";
3933
3934 delete $min_configs{$config};
3935
3936 # Also disable anything that is not enabled in this config
3937 my %configs;
3938 assign_configs \%configs, $output_config;
3939 my @config_keys = keys %min_configs;
3940 foreach my $config (@config_keys) {
3941 if (!defined($configs{$config})) {
3942 doprint "$config is not set, disabling\n";
3943 delete $min_configs{$config};
3944 }
3945 }
3946
3947 # Save off all the current mandatory configs
3948 open (OUT, ">$temp_config")
3949 or dodie "Can't write to $temp_config";
3950 foreach my $config (keys %keep_configs) {
3951 print OUT "$keep_configs{$config}\n";
3952 }
3953 foreach my $config (keys %min_configs) {
3954 print OUT "$min_configs{$config}\n";
3955 }
3956 close OUT;
3957
3958 run_command "mv $temp_config $output_minconfig" or
3959 dodie "failed to copy update to $output_minconfig";
3960 }
3961
3962 doprint "Reboot and wait $sleep_time seconds\n";
3963 reboot_to_good $sleep_time;
3964 }
3965
3966 success $i;
3967 return 1;
3968}
3969
3970sub make_warnings_file {
3971 my ($i) = @_;
3972
3973 if (!defined($warnings_file)) {
3974 dodie "Must define WARNINGS_FILE for make_warnings_file test";
3975 }
3976
3977 if ($build_type eq "nobuild") {
3978 dodie "BUILD_TYPE can not be 'nobuild' for make_warnings_file test";
3979 }
3980
3981 build $build_type or dodie "Failed to build";
3982
3983 open(OUT, ">$warnings_file") or dodie "Can't create $warnings_file";
3984
3985 open(IN, $buildlog) or dodie "Can't open $buildlog";
3986 while (<IN>) {
3987
3988 # Some compilers use UTF-8 extended for quotes
3989 # for distcc heterogeneous systems, this causes issues
3990 s/$utf8_quote/'/g;
3991
3992 if (/$check_build_re/) {
3993 print OUT;
3994 }
3995 }
3996 close(IN);
3997
3998 close(OUT);
3999
4000 success $i;
4001}
4002
4003$#ARGV < 1 or die "ktest.pl version: $VERSION\n usage: ktest.pl [config-file]\n";
4004
4005if ($#ARGV == 0) {
4006 $ktest_config = $ARGV[0];
4007 if (! -f $ktest_config) {
4008 print "$ktest_config does not exist.\n";
4009 if (!read_yn "Create it?") {
4010 exit 0;
4011 }
4012 }
4013}
4014
4015if (! -f $ktest_config) {
4016 $newconfig = 1;
4017 get_test_case;
4018 open(OUT, ">$ktest_config") or die "Can not create $ktest_config";
4019 print OUT << "EOF"
4020# Generated by ktest.pl
4021#
4022
4023# PWD is a ktest.pl variable that will result in the process working
4024# directory that ktest.pl is executed in.
4025
4026# THIS_DIR is automatically assigned the PWD of the path that generated
4027# the config file. It is best to use this variable when assigning other
4028# directory paths within this directory. This allows you to easily
4029# move the test cases to other locations or to other machines.
4030#
4031THIS_DIR := $variable{"PWD"}
4032
4033# Define each test with TEST_START
4034# The config options below it will override the defaults
4035TEST_START
4036TEST_TYPE = $default{"TEST_TYPE"}
4037
4038DEFAULTS
4039EOF
4040;
4041 close(OUT);
4042}
4043read_config $ktest_config;
4044
4045if (defined($opt{"LOG_FILE"})) {
4046 $opt{"LOG_FILE"} = eval_option("LOG_FILE", $opt{"LOG_FILE"}, -1);
4047}
4048
4049# Append any configs entered in manually to the config file.
4050my @new_configs = keys %entered_configs;
4051if ($#new_configs >= 0) {
4052 print "\nAppending entered in configs to $ktest_config\n";
4053 open(OUT, ">>$ktest_config") or die "Can not append to $ktest_config";
4054 foreach my $config (@new_configs) {
4055 print OUT "$config = $entered_configs{$config}\n";
4056 $opt{$config} = process_variables($entered_configs{$config});
4057 }
4058}
4059
4060if ($opt{"CLEAR_LOG"} && defined($opt{"LOG_FILE"})) {
4061 unlink $opt{"LOG_FILE"};
4062}
4063
4064doprint "\n\nSTARTING AUTOMATED TESTS\n\n";
4065
4066for (my $i = 0, my $repeat = 1; $i <= $opt{"NUM_TESTS"}; $i += $repeat) {
4067
4068 if (!$i) {
4069 doprint "DEFAULT OPTIONS:\n";
4070 } else {
4071 doprint "\nTEST $i OPTIONS";
4072 if (defined($repeat_tests{$i})) {
4073 $repeat = $repeat_tests{$i};
4074 doprint " ITERATE $repeat";
4075 }
4076 doprint "\n";
4077 }
4078
4079 foreach my $option (sort keys %opt) {
4080
4081 if ($option =~ /\[(\d+)\]$/) {
4082 next if ($i != $1);
4083 } else {
4084 next if ($i);
4085 }
4086
4087 doprint "$option = $opt{$option}\n";
4088 }
4089}
4090
4091sub option_defined {
4092 my ($option) = @_;
4093
4094 if (defined($opt{$option}) && $opt{$option} !~ /^\s*$/) {
4095 return 1;
4096 }
4097
4098 return 0;
4099}
4100
4101sub __set_test_option {
4102 my ($name, $i) = @_;
4103
4104 my $option = "$name\[$i\]";
4105
4106 if (option_defined($option)) {
4107 return $opt{$option};
4108 }
4109
4110 foreach my $test (keys %repeat_tests) {
4111 if ($i >= $test &&
4112 $i < $test + $repeat_tests{$test}) {
4113 $option = "$name\[$test\]";
4114 if (option_defined($option)) {
4115 return $opt{$option};
4116 }
4117 }
4118 }
4119
4120 if (option_defined($name)) {
4121 return $opt{$name};
4122 }
4123
4124 return undef;
4125}
4126
4127sub set_test_option {
4128 my ($name, $i) = @_;
4129
4130 my $option = __set_test_option($name, $i);
4131 return $option if (!defined($option));
4132
4133 return eval_option($name, $option, $i);
4134}
4135
4136sub find_mailer {
4137 my ($mailer) = @_;
4138
4139 my @paths = split /:/, $ENV{PATH};
4140
4141 # sendmail is usually in /usr/sbin
4142 $paths[$#paths + 1] = "/usr/sbin";
4143
4144 foreach my $path (@paths) {
4145 if (-x "$path/$mailer") {
4146 return $path;
4147 }
4148 }
4149
4150 return undef;
4151}
4152
4153sub do_send_mail {
4154 my ($subject, $message) = @_;
4155
4156 if (!defined($mail_path)) {
4157 # find the mailer
4158 $mail_path = find_mailer $mailer;
4159 if (!defined($mail_path)) {
4160 die "\nCan not find $mailer in PATH\n";
4161 }
4162 }
4163
4164 if (!defined($mail_command)) {
4165 if ($mailer eq "mail" || $mailer eq "mailx") {
4166 $mail_command = "\$MAIL_PATH/\$MAILER -s \'\$SUBJECT\' \$MAILTO <<< \'\$MESSAGE\'";
4167 } elsif ($mailer eq "sendmail" ) {
4168 $mail_command = "echo \'Subject: \$SUBJECT\n\n\$MESSAGE\' | \$MAIL_PATH/\$MAILER -t \$MAILTO";
4169 } else {
4170 die "\nYour mailer: $mailer is not supported.\n";
4171 }
4172 }
4173
4174 $mail_command =~ s/\$MAILER/$mailer/g;
4175 $mail_command =~ s/\$MAIL_PATH/$mail_path/g;
4176 $mail_command =~ s/\$MAILTO/$mailto/g;
4177 $mail_command =~ s/\$SUBJECT/$subject/g;
4178 $mail_command =~ s/\$MESSAGE/$message/g;
4179
4180 run_command $mail_command;
4181}
4182
4183sub send_email {
4184
4185 if (defined($mailto)) {
4186 if (!defined($mailer)) {
4187 doprint "No email sent: email or mailer not specified in config.\n";
4188 return;
4189 }
4190 do_send_mail @_;
4191 }
4192}
4193
4194sub cancel_test {
4195 if ($email_when_canceled) {
4196 send_email("KTEST: Your [$test_type] test was cancelled",
4197 "Your test started at $script_start_time was cancelled: sig int");
4198 }
4199 die "\nCaught Sig Int, test interrupted: $!\n"
4200}
4201
4202$SIG{INT} = qw(cancel_test);
4203
4204# First we need to do is the builds
4205for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) {
4206
4207 # Do not reboot on failing test options
4208 $no_reboot = 1;
4209 $reboot_success = 0;
4210
4211 $have_version = 0;
4212
4213 $iteration = $i;
4214
4215 $build_time = 0;
4216 $install_time = 0;
4217 $reboot_time = 0;
4218 $test_time = 0;
4219
4220 undef %force_config;
4221
4222 my $makecmd = set_test_option("MAKE_CMD", $i);
4223
4224 $outputdir = set_test_option("OUTPUT_DIR", $i);
4225 $builddir = set_test_option("BUILD_DIR", $i);
4226
4227 chdir $builddir || dodie "can't change directory to $builddir";
4228
4229 if (!-d $outputdir) {
4230 mkpath($outputdir) or
4231 dodie "can't create $outputdir";
4232 }
4233
4234 $make = "$makecmd O=$outputdir";
4235
4236 # Load all the options into their mapped variable names
4237 foreach my $opt (keys %option_map) {
4238 ${$option_map{$opt}} = set_test_option($opt, $i);
4239 }
4240
4241 $start_minconfig_defined = 1;
4242
4243 # The first test may override the PRE_KTEST option
4244 if ($i == 1) {
4245 if (defined($pre_ktest)) {
4246 doprint "\n";
4247 run_command $pre_ktest;
4248 }
4249 if ($email_when_started) {
4250 send_email("KTEST: Your [$test_type] test was started",
4251 "Your test was started on $script_start_time");
4252 }
4253 }
4254
4255 # Any test can override the POST_KTEST option
4256 # The last test takes precedence.
4257 if (defined($post_ktest)) {
4258 $final_post_ktest = $post_ktest;
4259 }
4260
4261 if (!defined($start_minconfig)) {
4262 $start_minconfig_defined = 0;
4263 $start_minconfig = $minconfig;
4264 }
4265
4266 if (!-d $tmpdir) {
4267 mkpath($tmpdir) or
4268 dodie "can't create $tmpdir";
4269 }
4270
4271 $ENV{"SSH_USER"} = $ssh_user;
4272 $ENV{"MACHINE"} = $machine;
4273
4274 $buildlog = "$tmpdir/buildlog-$machine";
4275 $testlog = "$tmpdir/testlog-$machine";
4276 $dmesg = "$tmpdir/dmesg-$machine";
4277 $output_config = "$outputdir/.config";
4278
4279 if (!$buildonly) {
4280 $target = "$ssh_user\@$machine";
4281 if ($reboot_type eq "grub") {
4282 dodie "GRUB_MENU not defined" if (!defined($grub_menu));
4283 } elsif ($reboot_type eq "grub2") {
4284 dodie "GRUB_MENU not defined" if (!defined($grub_menu));
4285 dodie "GRUB_FILE not defined" if (!defined($grub_file));
4286 } elsif ($reboot_type eq "syslinux") {
4287 dodie "SYSLINUX_LABEL not defined" if (!defined($syslinux_label));
4288 }
4289 }
4290
4291 my $run_type = $build_type;
4292 if ($test_type eq "patchcheck") {
4293 $run_type = $patchcheck_type;
4294 } elsif ($test_type eq "bisect") {
4295 $run_type = $bisect_type;
4296 } elsif ($test_type eq "config_bisect") {
4297 $run_type = $config_bisect_type;
4298 } elsif ($test_type eq "make_min_config") {
4299 $run_type = "";
4300 } elsif ($test_type eq "make_warnings_file") {
4301 $run_type = "";
4302 }
4303
4304 # mistake in config file?
4305 if (!defined($run_type)) {
4306 $run_type = "ERROR";
4307 }
4308
4309 my $installme = "";
4310 $installme = " no_install" if ($no_install);
4311
4312 my $name = "";
4313
4314 if (defined($test_name)) {
4315 $name = " ($test_name)";
4316 }
4317
4318 doprint "\n\n";
4319 doprint "RUNNING TEST $i of $opt{NUM_TESTS}$name with option $test_type $run_type$installme\n\n";
4320
4321 if (defined($pre_test)) {
4322 run_command $pre_test;
4323 }
4324
4325 unlink $dmesg;
4326 unlink $buildlog;
4327 unlink $testlog;
4328
4329 if (defined($addconfig)) {
4330 my $min = $minconfig;
4331 if (!defined($minconfig)) {
4332 $min = "";
4333 }
4334 run_command "cat $addconfig $min > $tmpdir/add_config" or
4335 dodie "Failed to create temp config";
4336 $minconfig = "$tmpdir/add_config";
4337 }
4338
4339 if (defined($checkout)) {
4340 run_command "git checkout $checkout" or
4341 dodie "failed to checkout $checkout";
4342 }
4343
4344 $no_reboot = 0;
4345
4346 # A test may opt to not reboot the box
4347 if ($reboot_on_success) {
4348 $reboot_success = 1;
4349 }
4350
4351 if ($test_type eq "bisect") {
4352 bisect $i;
4353 next;
4354 } elsif ($test_type eq "config_bisect") {
4355 config_bisect $i;
4356 next;
4357 } elsif ($test_type eq "patchcheck") {
4358 patchcheck $i;
4359 next;
4360 } elsif ($test_type eq "make_min_config") {
4361 make_min_config $i;
4362 next;
4363 } elsif ($test_type eq "make_warnings_file") {
4364 $no_reboot = 1;
4365 make_warnings_file $i;
4366 next;
4367 }
4368
4369 if ($build_type ne "nobuild") {
4370 build $build_type or next;
4371 check_buildlog or next;
4372 }
4373
4374 if ($test_type eq "install") {
4375 get_version;
4376 install;
4377 success $i;
4378 next;
4379 }
4380
4381 if ($test_type ne "build") {
4382 my $failed = 0;
4383 start_monitor_and_install or $failed = 1;
4384
4385 if (!$failed && $test_type ne "boot" && defined($run_test)) {
4386 do_run_test or $failed = 1;
4387 }
4388 end_monitor;
4389 if ($failed) {
4390 print_times;
4391 next;
4392 }
4393 }
4394
4395 print_times;
4396
4397 success $i;
4398}
4399
4400if (defined($final_post_ktest)) {
4401 run_command $final_post_ktest;
4402}
4403
4404if ($opt{"POWEROFF_ON_SUCCESS"}) {
4405 halt;
4406} elsif ($opt{"REBOOT_ON_SUCCESS"} && !do_not_reboot && $reboot_success) {
4407 reboot_to_good;
4408} elsif (defined($switch_to_good)) {
4409 # still need to get to the good kernel
4410 run_command $switch_to_good;
4411}
4412
4413
4414doprint "\n $successes of $opt{NUM_TESTS} tests were successful\n\n";
4415
4416if ($email_when_finished) {
4417 send_email("KTEST: Your [$test_type] test has finished!",
4418 "$successes of $opt{NUM_TESTS} tests started at $script_start_time were successful!");
4419}
4420exit 0;