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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;
13
14my $VERSION = "0.2";
15
16$| = 1;
17
18my %opt;
19my %repeat_tests;
20my %repeats;
21
22#default opts
23my %default = (
24 "NUM_TESTS" => 1,
25 "TEST_TYPE" => "build",
26 "BUILD_TYPE" => "randconfig",
27 "MAKE_CMD" => "make",
28 "TIMEOUT" => 120,
29 "TMP_DIR" => "/tmp/ktest/\${MACHINE}",
30 "SLEEP_TIME" => 60, # sleep time between tests
31 "BUILD_NOCLEAN" => 0,
32 "REBOOT_ON_ERROR" => 0,
33 "POWEROFF_ON_ERROR" => 0,
34 "REBOOT_ON_SUCCESS" => 1,
35 "POWEROFF_ON_SUCCESS" => 0,
36 "BUILD_OPTIONS" => "",
37 "BISECT_SLEEP_TIME" => 60, # sleep time between bisects
38 "PATCHCHECK_SLEEP_TIME" => 60, # sleep time between patch checks
39 "CLEAR_LOG" => 0,
40 "BISECT_MANUAL" => 0,
41 "BISECT_SKIP" => 1,
42 "MIN_CONFIG_TYPE" => "boot",
43 "SUCCESS_LINE" => "login:",
44 "DETECT_TRIPLE_FAULT" => 1,
45 "NO_INSTALL" => 0,
46 "BOOTED_TIMEOUT" => 1,
47 "DIE_ON_FAILURE" => 1,
48 "SSH_EXEC" => "ssh \$SSH_USER\@\$MACHINE \$SSH_COMMAND",
49 "SCP_TO_TARGET" => "scp \$SRC_FILE \$SSH_USER\@\$MACHINE:\$DST_FILE",
50 "SCP_TO_TARGET_INSTALL" => "\${SCP_TO_TARGET}",
51 "REBOOT" => "ssh \$SSH_USER\@\$MACHINE reboot",
52 "STOP_AFTER_SUCCESS" => 10,
53 "STOP_AFTER_FAILURE" => 60,
54 "STOP_TEST_AFTER" => 600,
55
56# required, and we will ask users if they don't have them but we keep the default
57# value something that is common.
58 "REBOOT_TYPE" => "grub",
59 "LOCALVERSION" => "-test",
60 "SSH_USER" => "root",
61 "BUILD_TARGET" => "arch/x86/boot/bzImage",
62 "TARGET_IMAGE" => "/boot/vmlinuz-test",
63
64 "LOG_FILE" => undef,
65 "IGNORE_UNUSED" => 0,
66);
67
68my $ktest_config;
69my $version;
70my $have_version = 0;
71my $machine;
72my $ssh_user;
73my $tmpdir;
74my $builddir;
75my $outputdir;
76my $output_config;
77my $test_type;
78my $build_type;
79my $build_options;
80my $pre_build;
81my $post_build;
82my $pre_build_die;
83my $post_build_die;
84my $reboot_type;
85my $reboot_script;
86my $power_cycle;
87my $reboot;
88my $reboot_on_error;
89my $switch_to_good;
90my $switch_to_test;
91my $poweroff_on_error;
92my $reboot_on_success;
93my $die_on_failure;
94my $powercycle_after_reboot;
95my $poweroff_after_halt;
96my $ssh_exec;
97my $scp_to_target;
98my $scp_to_target_install;
99my $power_off;
100my $grub_menu;
101my $grub_number;
102my $target;
103my $make;
104my $post_install;
105my $no_install;
106my $noclean;
107my $minconfig;
108my $start_minconfig;
109my $start_minconfig_defined;
110my $output_minconfig;
111my $minconfig_type;
112my $use_output_minconfig;
113my $ignore_config;
114my $ignore_errors;
115my $addconfig;
116my $in_bisect = 0;
117my $bisect_bad_commit = "";
118my $reverse_bisect;
119my $bisect_manual;
120my $bisect_skip;
121my $config_bisect_good;
122my $bisect_ret_good;
123my $bisect_ret_bad;
124my $bisect_ret_skip;
125my $bisect_ret_abort;
126my $bisect_ret_default;
127my $in_patchcheck = 0;
128my $run_test;
129my $redirect;
130my $buildlog;
131my $testlog;
132my $dmesg;
133my $monitor_fp;
134my $monitor_pid;
135my $monitor_cnt = 0;
136my $sleep_time;
137my $bisect_sleep_time;
138my $patchcheck_sleep_time;
139my $ignore_warnings;
140my $store_failures;
141my $store_successes;
142my $test_name;
143my $timeout;
144my $booted_timeout;
145my $detect_triplefault;
146my $console;
147my $reboot_success_line;
148my $success_line;
149my $stop_after_success;
150my $stop_after_failure;
151my $stop_test_after;
152my $build_target;
153my $target_image;
154my $checkout;
155my $localversion;
156my $iteration = 0;
157my $successes = 0;
158
159my $bisect_good;
160my $bisect_bad;
161my $bisect_type;
162my $bisect_start;
163my $bisect_replay;
164my $bisect_files;
165my $bisect_reverse;
166my $bisect_check;
167
168my $config_bisect;
169my $config_bisect_type;
170
171my $patchcheck_type;
172my $patchcheck_start;
173my $patchcheck_end;
174
175# set when a test is something other that just building or install
176# which would require more options.
177my $buildonly = 1;
178
179# set when creating a new config
180my $newconfig = 0;
181
182my %entered_configs;
183my %config_help;
184my %variable;
185my %force_config;
186
187# do not force reboots on config problems
188my $no_reboot = 1;
189
190# reboot on success
191my $reboot_success = 0;
192
193my %option_map = (
194 "MACHINE" => \$machine,
195 "SSH_USER" => \$ssh_user,
196 "TMP_DIR" => \$tmpdir,
197 "OUTPUT_DIR" => \$outputdir,
198 "BUILD_DIR" => \$builddir,
199 "TEST_TYPE" => \$test_type,
200 "BUILD_TYPE" => \$build_type,
201 "BUILD_OPTIONS" => \$build_options,
202 "PRE_BUILD" => \$pre_build,
203 "POST_BUILD" => \$post_build,
204 "PRE_BUILD_DIE" => \$pre_build_die,
205 "POST_BUILD_DIE" => \$post_build_die,
206 "POWER_CYCLE" => \$power_cycle,
207 "REBOOT" => \$reboot,
208 "BUILD_NOCLEAN" => \$noclean,
209 "MIN_CONFIG" => \$minconfig,
210 "OUTPUT_MIN_CONFIG" => \$output_minconfig,
211 "START_MIN_CONFIG" => \$start_minconfig,
212 "MIN_CONFIG_TYPE" => \$minconfig_type,
213 "USE_OUTPUT_MIN_CONFIG" => \$use_output_minconfig,
214 "IGNORE_CONFIG" => \$ignore_config,
215 "TEST" => \$run_test,
216 "ADD_CONFIG" => \$addconfig,
217 "REBOOT_TYPE" => \$reboot_type,
218 "GRUB_MENU" => \$grub_menu,
219 "POST_INSTALL" => \$post_install,
220 "NO_INSTALL" => \$no_install,
221 "REBOOT_SCRIPT" => \$reboot_script,
222 "REBOOT_ON_ERROR" => \$reboot_on_error,
223 "SWITCH_TO_GOOD" => \$switch_to_good,
224 "SWITCH_TO_TEST" => \$switch_to_test,
225 "POWEROFF_ON_ERROR" => \$poweroff_on_error,
226 "REBOOT_ON_SUCCESS" => \$reboot_on_success,
227 "DIE_ON_FAILURE" => \$die_on_failure,
228 "POWER_OFF" => \$power_off,
229 "POWERCYCLE_AFTER_REBOOT" => \$powercycle_after_reboot,
230 "POWEROFF_AFTER_HALT" => \$poweroff_after_halt,
231 "SLEEP_TIME" => \$sleep_time,
232 "BISECT_SLEEP_TIME" => \$bisect_sleep_time,
233 "PATCHCHECK_SLEEP_TIME" => \$patchcheck_sleep_time,
234 "IGNORE_WARNINGS" => \$ignore_warnings,
235 "IGNORE_ERRORS" => \$ignore_errors,
236 "BISECT_MANUAL" => \$bisect_manual,
237 "BISECT_SKIP" => \$bisect_skip,
238 "CONFIG_BISECT_GOOD" => \$config_bisect_good,
239 "BISECT_RET_GOOD" => \$bisect_ret_good,
240 "BISECT_RET_BAD" => \$bisect_ret_bad,
241 "BISECT_RET_SKIP" => \$bisect_ret_skip,
242 "BISECT_RET_ABORT" => \$bisect_ret_abort,
243 "BISECT_RET_DEFAULT" => \$bisect_ret_default,
244 "STORE_FAILURES" => \$store_failures,
245 "STORE_SUCCESSES" => \$store_successes,
246 "TEST_NAME" => \$test_name,
247 "TIMEOUT" => \$timeout,
248 "BOOTED_TIMEOUT" => \$booted_timeout,
249 "CONSOLE" => \$console,
250 "DETECT_TRIPLE_FAULT" => \$detect_triplefault,
251 "SUCCESS_LINE" => \$success_line,
252 "REBOOT_SUCCESS_LINE" => \$reboot_success_line,
253 "STOP_AFTER_SUCCESS" => \$stop_after_success,
254 "STOP_AFTER_FAILURE" => \$stop_after_failure,
255 "STOP_TEST_AFTER" => \$stop_test_after,
256 "BUILD_TARGET" => \$build_target,
257 "SSH_EXEC" => \$ssh_exec,
258 "SCP_TO_TARGET" => \$scp_to_target,
259 "SCP_TO_TARGET_INSTALL" => \$scp_to_target_install,
260 "CHECKOUT" => \$checkout,
261 "TARGET_IMAGE" => \$target_image,
262 "LOCALVERSION" => \$localversion,
263
264 "BISECT_GOOD" => \$bisect_good,
265 "BISECT_BAD" => \$bisect_bad,
266 "BISECT_TYPE" => \$bisect_type,
267 "BISECT_START" => \$bisect_start,
268 "BISECT_REPLAY" => \$bisect_replay,
269 "BISECT_FILES" => \$bisect_files,
270 "BISECT_REVERSE" => \$bisect_reverse,
271 "BISECT_CHECK" => \$bisect_check,
272
273 "CONFIG_BISECT" => \$config_bisect,
274 "CONFIG_BISECT_TYPE" => \$config_bisect_type,
275
276 "PATCHCHECK_TYPE" => \$patchcheck_type,
277 "PATCHCHECK_START" => \$patchcheck_start,
278 "PATCHCHECK_END" => \$patchcheck_end,
279);
280
281# Options may be used by other options, record them.
282my %used_options;
283
284# default variables that can be used
285chomp ($variable{"PWD"} = `pwd`);
286
287$config_help{"MACHINE"} = << "EOF"
288 The machine hostname that you will test.
289 For build only tests, it is still needed to differentiate log files.
290EOF
291 ;
292$config_help{"SSH_USER"} = << "EOF"
293 The box is expected to have ssh on normal bootup, provide the user
294 (most likely root, since you need privileged operations)
295EOF
296 ;
297$config_help{"BUILD_DIR"} = << "EOF"
298 The directory that contains the Linux source code (full path).
299 You can use \${PWD} that will be the path where ktest.pl is run, or use
300 \${THIS_DIR} which is assigned \${PWD} but may be changed later.
301EOF
302 ;
303$config_help{"OUTPUT_DIR"} = << "EOF"
304 The directory that the objects will be built (full path).
305 (can not be same as BUILD_DIR)
306 You can use \${PWD} that will be the path where ktest.pl is run, or use
307 \${THIS_DIR} which is assigned \${PWD} but may be changed later.
308EOF
309 ;
310$config_help{"BUILD_TARGET"} = << "EOF"
311 The location of the compiled file to copy to the target.
312 (relative to OUTPUT_DIR)
313EOF
314 ;
315$config_help{"BUILD_OPTIONS"} = << "EOF"
316 Options to add to \"make\" when building.
317 i.e. -j20
318EOF
319 ;
320$config_help{"TARGET_IMAGE"} = << "EOF"
321 The place to put your image on the test machine.
322EOF
323 ;
324$config_help{"POWER_CYCLE"} = << "EOF"
325 A script or command to reboot the box.
326
327 Here is a digital loggers power switch example
328 POWER_CYCLE = wget --no-proxy -O /dev/null -q --auth-no-challenge 'http://admin:admin\@power/outlet?5=CCL'
329
330 Here is an example to reboot a virtual box on the current host
331 with the name "Guest".
332 POWER_CYCLE = virsh destroy Guest; sleep 5; virsh start Guest
333EOF
334 ;
335$config_help{"CONSOLE"} = << "EOF"
336 The script or command that reads the console
337
338 If you use ttywatch server, something like the following would work.
339CONSOLE = nc -d localhost 3001
340
341 For a virtual machine with guest name "Guest".
342CONSOLE = virsh console Guest
343EOF
344 ;
345$config_help{"LOCALVERSION"} = << "EOF"
346 Required version ending to differentiate the test
347 from other linux builds on the system.
348EOF
349 ;
350$config_help{"REBOOT_TYPE"} = << "EOF"
351 Way to reboot the box to the test kernel.
352 Only valid options so far are "grub" and "script".
353
354 If you specify grub, it will assume grub version 1
355 and will search in /boot/grub/menu.lst for the title \$GRUB_MENU
356 and select that target to reboot to the kernel. If this is not
357 your setup, then specify "script" and have a command or script
358 specified in REBOOT_SCRIPT to boot to the target.
359
360 The entry in /boot/grub/menu.lst must be entered in manually.
361 The test will not modify that file.
362EOF
363 ;
364$config_help{"GRUB_MENU"} = << "EOF"
365 The grub title name for the test kernel to boot
366 (Only mandatory if REBOOT_TYPE = grub)
367
368 Note, ktest.pl will not update the grub menu.lst, you need to
369 manually add an option for the test. ktest.pl will search
370 the grub menu.lst for this option to find what kernel to
371 reboot into.
372
373 For example, if in the /boot/grub/menu.lst the test kernel title has:
374 title Test Kernel
375 kernel vmlinuz-test
376 GRUB_MENU = Test Kernel
377EOF
378 ;
379$config_help{"REBOOT_SCRIPT"} = << "EOF"
380 A script to reboot the target into the test kernel
381 (Only mandatory if REBOOT_TYPE = script)
382EOF
383 ;
384
385sub read_prompt {
386 my ($cancel, $prompt) = @_;
387
388 my $ans;
389
390 for (;;) {
391 if ($cancel) {
392 print "$prompt [y/n/C] ";
393 } else {
394 print "$prompt [Y/n] ";
395 }
396 $ans = <STDIN>;
397 chomp $ans;
398 if ($ans =~ /^\s*$/) {
399 if ($cancel) {
400 $ans = "c";
401 } else {
402 $ans = "y";
403 }
404 }
405 last if ($ans =~ /^y$/i || $ans =~ /^n$/i);
406 if ($cancel) {
407 last if ($ans =~ /^c$/i);
408 print "Please answer either 'y', 'n' or 'c'.\n";
409 } else {
410 print "Please answer either 'y' or 'n'.\n";
411 }
412 }
413 if ($ans =~ /^c/i) {
414 exit;
415 }
416 if ($ans !~ /^y$/i) {
417 return 0;
418 }
419 return 1;
420}
421
422sub read_yn {
423 my ($prompt) = @_;
424
425 return read_prompt 0, $prompt;
426}
427
428sub read_ync {
429 my ($prompt) = @_;
430
431 return read_prompt 1, $prompt;
432}
433
434sub get_ktest_config {
435 my ($config) = @_;
436 my $ans;
437
438 return if (defined($opt{$config}));
439
440 if (defined($config_help{$config})) {
441 print "\n";
442 print $config_help{$config};
443 }
444
445 for (;;) {
446 print "$config = ";
447 if (defined($default{$config}) && length($default{$config})) {
448 print "\[$default{$config}\] ";
449 }
450 $ans = <STDIN>;
451 $ans =~ s/^\s*(.*\S)\s*$/$1/;
452 if ($ans =~ /^\s*$/) {
453 if ($default{$config}) {
454 $ans = $default{$config};
455 } else {
456 print "Your answer can not be blank\n";
457 next;
458 }
459 }
460 $entered_configs{$config} = ${ans};
461 last;
462 }
463}
464
465sub get_ktest_configs {
466 get_ktest_config("MACHINE");
467 get_ktest_config("BUILD_DIR");
468 get_ktest_config("OUTPUT_DIR");
469
470 if ($newconfig) {
471 get_ktest_config("BUILD_OPTIONS");
472 }
473
474 # options required for other than just building a kernel
475 if (!$buildonly) {
476 get_ktest_config("POWER_CYCLE");
477 get_ktest_config("CONSOLE");
478 }
479
480 # options required for install and more
481 if ($buildonly != 1) {
482 get_ktest_config("SSH_USER");
483 get_ktest_config("BUILD_TARGET");
484 get_ktest_config("TARGET_IMAGE");
485 }
486
487 get_ktest_config("LOCALVERSION");
488
489 return if ($buildonly);
490
491 my $rtype = $opt{"REBOOT_TYPE"};
492
493 if (!defined($rtype)) {
494 if (!defined($opt{"GRUB_MENU"})) {
495 get_ktest_config("REBOOT_TYPE");
496 $rtype = $entered_configs{"REBOOT_TYPE"};
497 } else {
498 $rtype = "grub";
499 }
500 }
501
502 if ($rtype eq "grub") {
503 get_ktest_config("GRUB_MENU");
504 }
505}
506
507sub process_variables {
508 my ($value, $remove_undef) = @_;
509 my $retval = "";
510
511 # We want to check for '\', and it is just easier
512 # to check the previous characet of '$' and not need
513 # to worry if '$' is the first character. By adding
514 # a space to $value, we can just check [^\\]\$ and
515 # it will still work.
516 $value = " $value";
517
518 while ($value =~ /(.*?[^\\])\$\{(.*?)\}(.*)/) {
519 my $begin = $1;
520 my $var = $2;
521 my $end = $3;
522 # append beginning of value to retval
523 $retval = "$retval$begin";
524 if (defined($variable{$var})) {
525 $retval = "$retval$variable{$var}";
526 } elsif (defined($remove_undef) && $remove_undef) {
527 # for if statements, any variable that is not defined,
528 # we simple convert to 0
529 $retval = "${retval}0";
530 } else {
531 # put back the origin piece.
532 $retval = "$retval\$\{$var\}";
533 # This could be an option that is used later, save
534 # it so we don't warn if this option is not one of
535 # ktests options.
536 $used_options{$var} = 1;
537 }
538 $value = $end;
539 }
540 $retval = "$retval$value";
541
542 # remove the space added in the beginning
543 $retval =~ s/ //;
544
545 return "$retval"
546}
547
548sub set_value {
549 my ($lvalue, $rvalue, $override, $overrides, $name) = @_;
550
551 my $prvalue = process_variables($rvalue);
552
553 if ($buildonly && $lvalue =~ /^TEST_TYPE(\[.*\])?$/ && $prvalue ne "build") {
554 # Note if a test is something other than build, then we
555 # will need other manditory options.
556 if ($prvalue ne "install") {
557 $buildonly = 0;
558 } else {
559 # install still limits some manditory options.
560 $buildonly = 2;
561 }
562 }
563
564 if (defined($opt{$lvalue})) {
565 if (!$override || defined(${$overrides}{$lvalue})) {
566 my $extra = "";
567 if ($override) {
568 $extra = "In the same override section!\n";
569 }
570 die "$name: $.: Option $lvalue defined more than once!\n$extra";
571 }
572 ${$overrides}{$lvalue} = $prvalue;
573 }
574 if ($rvalue =~ /^\s*$/) {
575 delete $opt{$lvalue};
576 } else {
577 $opt{$lvalue} = $prvalue;
578 }
579}
580
581sub set_variable {
582 my ($lvalue, $rvalue) = @_;
583
584 if ($rvalue =~ /^\s*$/) {
585 delete $variable{$lvalue};
586 } else {
587 $rvalue = process_variables($rvalue);
588 $variable{$lvalue} = $rvalue;
589 }
590}
591
592sub process_compare {
593 my ($lval, $cmp, $rval) = @_;
594
595 # remove whitespace
596
597 $lval =~ s/^\s*//;
598 $lval =~ s/\s*$//;
599
600 $rval =~ s/^\s*//;
601 $rval =~ s/\s*$//;
602
603 if ($cmp eq "==") {
604 return $lval eq $rval;
605 } elsif ($cmp eq "!=") {
606 return $lval ne $rval;
607 }
608
609 my $statement = "$lval $cmp $rval";
610 my $ret = eval $statement;
611
612 # $@ stores error of eval
613 if ($@) {
614 return -1;
615 }
616
617 return $ret;
618}
619
620sub value_defined {
621 my ($val) = @_;
622
623 return defined($variable{$2}) ||
624 defined($opt{$2});
625}
626
627my $d = 0;
628sub process_expression {
629 my ($name, $val) = @_;
630
631 my $c = $d++;
632
633 while ($val =~ s/\(([^\(]*?)\)/\&\&\&\&VAL\&\&\&\&/) {
634 my $express = $1;
635
636 if (process_expression($name, $express)) {
637 $val =~ s/\&\&\&\&VAL\&\&\&\&/ 1 /;
638 } else {
639 $val =~ s/\&\&\&\&VAL\&\&\&\&/ 0 /;
640 }
641 }
642
643 $d--;
644 my $OR = "\\|\\|";
645 my $AND = "\\&\\&";
646
647 while ($val =~ s/^(.*?)($OR|$AND)//) {
648 my $express = $1;
649 my $op = $2;
650
651 if (process_expression($name, $express)) {
652 if ($op eq "||") {
653 return 1;
654 }
655 } else {
656 if ($op eq "&&") {
657 return 0;
658 }
659 }
660 }
661
662 if ($val =~ /(.*)(==|\!=|>=|<=|>|<)(.*)/) {
663 my $ret = process_compare($1, $2, $3);
664 if ($ret < 0) {
665 die "$name: $.: Unable to process comparison\n";
666 }
667 return $ret;
668 }
669
670 if ($val =~ /^\s*(NOT\s*)?DEFINED\s+(\S+)\s*$/) {
671 if (defined $1) {
672 return !value_defined($2);
673 } else {
674 return value_defined($2);
675 }
676 }
677
678 if ($val =~ /^\s*0\s*$/) {
679 return 0;
680 } elsif ($val =~ /^\s*\d+\s*$/) {
681 return 1;
682 }
683
684 die ("$name: $.: Undefined content $val in if statement\n");
685}
686
687sub process_if {
688 my ($name, $value) = @_;
689
690 # Convert variables and replace undefined ones with 0
691 my $val = process_variables($value, 1);
692 my $ret = process_expression $name, $val;
693
694 return $ret;
695}
696
697sub __read_config {
698 my ($config, $current_test_num) = @_;
699
700 my $in;
701 open($in, $config) || die "can't read file $config";
702
703 my $name = $config;
704 $name =~ s,.*/(.*),$1,;
705
706 my $test_num = $$current_test_num;
707 my $default = 1;
708 my $repeat = 1;
709 my $num_tests_set = 0;
710 my $skip = 0;
711 my $rest;
712 my $line;
713 my $test_case = 0;
714 my $if = 0;
715 my $if_set = 0;
716 my $override = 0;
717
718 my %overrides;
719
720 while (<$in>) {
721
722 # ignore blank lines and comments
723 next if (/^\s*$/ || /\s*\#/);
724
725 if (/^\s*(TEST_START|DEFAULTS)\b(.*)/) {
726
727 my $type = $1;
728 $rest = $2;
729 $line = $2;
730
731 my $old_test_num;
732 my $old_repeat;
733 $override = 0;
734
735 if ($type eq "TEST_START") {
736
737 if ($num_tests_set) {
738 die "$name: $.: Can not specify both NUM_TESTS and TEST_START\n";
739 }
740
741 $old_test_num = $test_num;
742 $old_repeat = $repeat;
743
744 $test_num += $repeat;
745 $default = 0;
746 $repeat = 1;
747 } else {
748 $default = 1;
749 }
750
751 # If SKIP is anywhere in the line, the command will be skipped
752 if ($rest =~ s/\s+SKIP\b//) {
753 $skip = 1;
754 } else {
755 $test_case = 1;
756 $skip = 0;
757 }
758
759 if ($rest =~ s/\sELSE\b//) {
760 if (!$if) {
761 die "$name: $.: ELSE found with out matching IF section\n$_";
762 }
763 $if = 0;
764
765 if ($if_set) {
766 $skip = 1;
767 } else {
768 $skip = 0;
769 }
770 }
771
772 if ($rest =~ s/\sIF\s+(.*)//) {
773 if (process_if($name, $1)) {
774 $if_set = 1;
775 } else {
776 $skip = 1;
777 }
778 $if = 1;
779 } else {
780 $if = 0;
781 $if_set = 0;
782 }
783
784 if (!$skip) {
785 if ($type eq "TEST_START") {
786 if ($rest =~ s/\s+ITERATE\s+(\d+)//) {
787 $repeat = $1;
788 $repeat_tests{"$test_num"} = $repeat;
789 }
790 } elsif ($rest =~ s/\sOVERRIDE\b//) {
791 # DEFAULT only
792 $override = 1;
793 # Clear previous overrides
794 %overrides = ();
795 }
796 }
797
798 if (!$skip && $rest !~ /^\s*$/) {
799 die "$name: $.: Gargbage found after $type\n$_";
800 }
801
802 if ($skip && $type eq "TEST_START") {
803 $test_num = $old_test_num;
804 $repeat = $old_repeat;
805 }
806
807 } elsif (/^\s*ELSE\b(.*)$/) {
808 if (!$if) {
809 die "$name: $.: ELSE found with out matching IF section\n$_";
810 }
811 $rest = $1;
812 if ($if_set) {
813 $skip = 1;
814 $rest = "";
815 } else {
816 $skip = 0;
817
818 if ($rest =~ /\sIF\s+(.*)/) {
819 # May be a ELSE IF section.
820 if (!process_if($name, $1)) {
821 $skip = 1;
822 }
823 $rest = "";
824 } else {
825 $if = 0;
826 }
827 }
828
829 if ($rest !~ /^\s*$/) {
830 die "$name: $.: Gargbage found after DEFAULTS\n$_";
831 }
832
833 } elsif (/^\s*INCLUDE\s+(\S+)/) {
834
835 next if ($skip);
836
837 if (!$default) {
838 die "$name: $.: INCLUDE can only be done in default sections\n$_";
839 }
840
841 my $file = process_variables($1);
842
843 if ($file !~ m,^/,) {
844 # check the path of the config file first
845 if ($config =~ m,(.*)/,) {
846 if (-f "$1/$file") {
847 $file = "$1/$file";
848 }
849 }
850 }
851
852 if ( ! -r $file ) {
853 die "$name: $.: Can't read file $file\n$_";
854 }
855
856 if (__read_config($file, \$test_num)) {
857 $test_case = 1;
858 }
859
860 } elsif (/^\s*([A-Z_\[\]\d]+)\s*=\s*(.*?)\s*$/) {
861
862 next if ($skip);
863
864 my $lvalue = $1;
865 my $rvalue = $2;
866
867 if (!$default &&
868 ($lvalue eq "NUM_TESTS" ||
869 $lvalue eq "LOG_FILE" ||
870 $lvalue eq "CLEAR_LOG")) {
871 die "$name: $.: $lvalue must be set in DEFAULTS section\n";
872 }
873
874 if ($lvalue eq "NUM_TESTS") {
875 if ($test_num) {
876 die "$name: $.: Can not specify both NUM_TESTS and TEST_START\n";
877 }
878 if (!$default) {
879 die "$name: $.: NUM_TESTS must be set in default section\n";
880 }
881 $num_tests_set = 1;
882 }
883
884 if ($default || $lvalue =~ /\[\d+\]$/) {
885 set_value($lvalue, $rvalue, $override, \%overrides, $name);
886 } else {
887 my $val = "$lvalue\[$test_num\]";
888 set_value($val, $rvalue, $override, \%overrides, $name);
889
890 if ($repeat > 1) {
891 $repeats{$val} = $repeat;
892 }
893 }
894 } elsif (/^\s*([A-Z_\[\]\d]+)\s*:=\s*(.*?)\s*$/) {
895 next if ($skip);
896
897 my $lvalue = $1;
898 my $rvalue = $2;
899
900 # process config variables.
901 # Config variables are only active while reading the
902 # config and can be defined anywhere. They also ignore
903 # TEST_START and DEFAULTS, but are skipped if they are in
904 # on of these sections that have SKIP defined.
905 # The save variable can be
906 # defined multiple times and the new one simply overrides
907 # the prevous one.
908 set_variable($lvalue, $rvalue);
909
910 } else {
911 die "$name: $.: Garbage found in config\n$_";
912 }
913 }
914
915 if ($test_num) {
916 $test_num += $repeat - 1;
917 $opt{"NUM_TESTS"} = $test_num;
918 }
919
920 close($in);
921
922 $$current_test_num = $test_num;
923
924 return $test_case;
925}
926
927sub get_test_case {
928 print "What test case would you like to run?\n";
929 print " (build, install or boot)\n";
930 print " Other tests are available but require editing the config file\n";
931 my $ans = <STDIN>;
932 chomp $ans;
933 $default{"TEST_TYPE"} = $ans;
934}
935
936sub read_config {
937 my ($config) = @_;
938
939 my $test_case;
940 my $test_num = 0;
941
942 $test_case = __read_config $config, \$test_num;
943
944 # make sure we have all mandatory configs
945 get_ktest_configs;
946
947 # was a test specified?
948 if (!$test_case) {
949 print "No test case specified.\n";
950 get_test_case;
951 }
952
953 # set any defaults
954
955 foreach my $default (keys %default) {
956 if (!defined($opt{$default})) {
957 $opt{$default} = $default{$default};
958 }
959 }
960
961 if ($opt{"IGNORE_UNUSED"} == 1) {
962 return;
963 }
964
965 my %not_used;
966
967 # check if there are any stragglers (typos?)
968 foreach my $option (keys %opt) {
969 my $op = $option;
970 # remove per test labels.
971 $op =~ s/\[.*\]//;
972 if (!exists($option_map{$op}) &&
973 !exists($default{$op}) &&
974 !exists($used_options{$op})) {
975 $not_used{$op} = 1;
976 }
977 }
978
979 if (%not_used) {
980 my $s = "s are";
981 $s = " is" if (keys %not_used == 1);
982 print "The following option$s not used; could be a typo:\n";
983 foreach my $option (keys %not_used) {
984 print "$option\n";
985 }
986 print "Set IGRNORE_UNUSED = 1 to have ktest ignore unused variables\n";
987 if (!read_yn "Do you want to continue?") {
988 exit -1;
989 }
990 }
991}
992
993sub __eval_option {
994 my ($option, $i) = @_;
995
996 # Add space to evaluate the character before $
997 $option = " $option";
998 my $retval = "";
999 my $repeated = 0;
1000 my $parent = 0;
1001
1002 foreach my $test (keys %repeat_tests) {
1003 if ($i >= $test &&
1004 $i < $test + $repeat_tests{$test}) {
1005
1006 $repeated = 1;
1007 $parent = $test;
1008 last;
1009 }
1010 }
1011
1012 while ($option =~ /(.*?[^\\])\$\{(.*?)\}(.*)/) {
1013 my $start = $1;
1014 my $var = $2;
1015 my $end = $3;
1016
1017 # Append beginning of line
1018 $retval = "$retval$start";
1019
1020 # If the iteration option OPT[$i] exists, then use that.
1021 # otherwise see if the default OPT (without [$i]) exists.
1022
1023 my $o = "$var\[$i\]";
1024 my $parento = "$var\[$parent\]";
1025
1026 if (defined($opt{$o})) {
1027 $o = $opt{$o};
1028 $retval = "$retval$o";
1029 } elsif ($repeated && defined($opt{$parento})) {
1030 $o = $opt{$parento};
1031 $retval = "$retval$o";
1032 } elsif (defined($opt{$var})) {
1033 $o = $opt{$var};
1034 $retval = "$retval$o";
1035 } else {
1036 $retval = "$retval\$\{$var\}";
1037 }
1038
1039 $option = $end;
1040 }
1041
1042 $retval = "$retval$option";
1043
1044 $retval =~ s/^ //;
1045
1046 return $retval;
1047}
1048
1049sub eval_option {
1050 my ($option, $i) = @_;
1051
1052 my $prev = "";
1053
1054 # Since an option can evaluate to another option,
1055 # keep iterating until we do not evaluate any more
1056 # options.
1057 my $r = 0;
1058 while ($prev ne $option) {
1059 # Check for recursive evaluations.
1060 # 100 deep should be more than enough.
1061 if ($r++ > 100) {
1062 die "Over 100 evaluations accurred with $option\n" .
1063 "Check for recursive variables\n";
1064 }
1065 $prev = $option;
1066 $option = __eval_option($option, $i);
1067 }
1068
1069 return $option;
1070}
1071
1072sub _logit {
1073 if (defined($opt{"LOG_FILE"})) {
1074 open(OUT, ">> $opt{LOG_FILE}") or die "Can't write to $opt{LOG_FILE}";
1075 print OUT @_;
1076 close(OUT);
1077 }
1078}
1079
1080sub logit {
1081 if (defined($opt{"LOG_FILE"})) {
1082 _logit @_;
1083 } else {
1084 print @_;
1085 }
1086}
1087
1088sub doprint {
1089 print @_;
1090 _logit @_;
1091}
1092
1093sub run_command;
1094sub start_monitor;
1095sub end_monitor;
1096sub wait_for_monitor;
1097
1098sub reboot {
1099 my ($time) = @_;
1100
1101 if (defined($time)) {
1102 start_monitor;
1103 # flush out current monitor
1104 # May contain the reboot success line
1105 wait_for_monitor 1;
1106 }
1107
1108 # try to reboot normally
1109 if (run_command $reboot) {
1110 if (defined($powercycle_after_reboot)) {
1111 sleep $powercycle_after_reboot;
1112 run_command "$power_cycle";
1113 }
1114 } else {
1115 # nope? power cycle it.
1116 run_command "$power_cycle";
1117 }
1118
1119 if (defined($time)) {
1120 wait_for_monitor($time, $reboot_success_line);
1121 end_monitor;
1122 }
1123}
1124
1125sub reboot_to_good {
1126 my ($time) = @_;
1127
1128 if (defined($switch_to_good)) {
1129 run_command $switch_to_good;
1130 }
1131
1132 reboot $time;
1133}
1134
1135sub do_not_reboot {
1136 my $i = $iteration;
1137
1138 return $test_type eq "build" || $no_reboot ||
1139 ($test_type eq "patchcheck" && $opt{"PATCHCHECK_TYPE[$i]"} eq "build") ||
1140 ($test_type eq "bisect" && $opt{"BISECT_TYPE[$i]"} eq "build");
1141}
1142
1143sub dodie {
1144 doprint "CRITICAL FAILURE... ", @_, "\n";
1145
1146 my $i = $iteration;
1147
1148 if ($reboot_on_error && !do_not_reboot) {
1149
1150 doprint "REBOOTING\n";
1151 reboot_to_good;
1152
1153 } elsif ($poweroff_on_error && defined($power_off)) {
1154 doprint "POWERING OFF\n";
1155 `$power_off`;
1156 }
1157
1158 if (defined($opt{"LOG_FILE"})) {
1159 print " See $opt{LOG_FILE} for more info.\n";
1160 }
1161
1162 die @_, "\n";
1163}
1164
1165sub open_console {
1166 my ($fp) = @_;
1167
1168 my $flags;
1169
1170 my $pid = open($fp, "$console|") or
1171 dodie "Can't open console $console";
1172
1173 $flags = fcntl($fp, F_GETFL, 0) or
1174 dodie "Can't get flags for the socket: $!";
1175 $flags = fcntl($fp, F_SETFL, $flags | O_NONBLOCK) or
1176 dodie "Can't set flags for the socket: $!";
1177
1178 return $pid;
1179}
1180
1181sub close_console {
1182 my ($fp, $pid) = @_;
1183
1184 doprint "kill child process $pid\n";
1185 kill 2, $pid;
1186
1187 print "closing!\n";
1188 close($fp);
1189}
1190
1191sub start_monitor {
1192 if ($monitor_cnt++) {
1193 return;
1194 }
1195 $monitor_fp = \*MONFD;
1196 $monitor_pid = open_console $monitor_fp;
1197
1198 return;
1199
1200 open(MONFD, "Stop perl from warning about single use of MONFD");
1201}
1202
1203sub end_monitor {
1204 if (--$monitor_cnt) {
1205 return;
1206 }
1207 close_console($monitor_fp, $monitor_pid);
1208}
1209
1210sub wait_for_monitor {
1211 my ($time, $stop) = @_;
1212 my $full_line = "";
1213 my $line;
1214 my $booted = 0;
1215
1216 doprint "** Wait for monitor to settle down **\n";
1217
1218 # read the monitor and wait for the system to calm down
1219 while (!$booted) {
1220 $line = wait_for_input($monitor_fp, $time);
1221 last if (!defined($line));
1222 print "$line";
1223 $full_line .= $line;
1224
1225 if (defined($stop) && $full_line =~ /$stop/) {
1226 doprint "wait for monitor detected $stop\n";
1227 $booted = 1;
1228 }
1229
1230 if ($line =~ /\n/) {
1231 $full_line = "";
1232 }
1233 }
1234 print "** Monitor flushed **\n";
1235}
1236
1237sub save_logs {
1238 my ($result, $basedir) = @_;
1239 my @t = localtime;
1240 my $date = sprintf "%04d%02d%02d%02d%02d%02d",
1241 1900+$t[5],$t[4],$t[3],$t[2],$t[1],$t[0];
1242
1243 my $type = $build_type;
1244 if ($type =~ /useconfig/) {
1245 $type = "useconfig";
1246 }
1247
1248 my $dir = "$machine-$test_type-$type-$result-$date";
1249
1250 $dir = "$basedir/$dir";
1251
1252 if (!-d $dir) {
1253 mkpath($dir) or
1254 die "can't create $dir";
1255 }
1256
1257 my %files = (
1258 "config" => $output_config,
1259 "buildlog" => $buildlog,
1260 "dmesg" => $dmesg,
1261 "testlog" => $testlog,
1262 );
1263
1264 while (my ($name, $source) = each(%files)) {
1265 if (-f "$source") {
1266 cp "$source", "$dir/$name" or
1267 die "failed to copy $source";
1268 }
1269 }
1270
1271 doprint "*** Saved info to $dir ***\n";
1272}
1273
1274sub fail {
1275
1276 if ($die_on_failure) {
1277 dodie @_;
1278 }
1279
1280 doprint "FAILED\n";
1281
1282 my $i = $iteration;
1283
1284 # no need to reboot for just building.
1285 if (!do_not_reboot) {
1286 doprint "REBOOTING\n";
1287 reboot_to_good $sleep_time;
1288 }
1289
1290 my $name = "";
1291
1292 if (defined($test_name)) {
1293 $name = " ($test_name)";
1294 }
1295
1296 doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
1297 doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
1298 doprint "KTEST RESULT: TEST $i$name Failed: ", @_, "\n";
1299 doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
1300 doprint "%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%\n";
1301
1302 if (defined($store_failures)) {
1303 save_logs "fail", $store_failures;
1304 }
1305
1306 return 1;
1307}
1308
1309sub run_command {
1310 my ($command) = @_;
1311 my $dolog = 0;
1312 my $dord = 0;
1313 my $pid;
1314
1315 $command =~ s/\$SSH_USER/$ssh_user/g;
1316 $command =~ s/\$MACHINE/$machine/g;
1317
1318 doprint("$command ... ");
1319
1320 $pid = open(CMD, "$command 2>&1 |") or
1321 (fail "unable to exec $command" and return 0);
1322
1323 if (defined($opt{"LOG_FILE"})) {
1324 open(LOG, ">>$opt{LOG_FILE}") or
1325 dodie "failed to write to log";
1326 $dolog = 1;
1327 }
1328
1329 if (defined($redirect)) {
1330 open (RD, ">$redirect") or
1331 dodie "failed to write to redirect $redirect";
1332 $dord = 1;
1333 }
1334
1335 while (<CMD>) {
1336 print LOG if ($dolog);
1337 print RD if ($dord);
1338 }
1339
1340 waitpid($pid, 0);
1341 my $failed = $?;
1342
1343 close(CMD);
1344 close(LOG) if ($dolog);
1345 close(RD) if ($dord);
1346
1347 if ($failed) {
1348 doprint "FAILED!\n";
1349 } else {
1350 doprint "SUCCESS\n";
1351 }
1352
1353 return !$failed;
1354}
1355
1356sub run_ssh {
1357 my ($cmd) = @_;
1358 my $cp_exec = $ssh_exec;
1359
1360 $cp_exec =~ s/\$SSH_COMMAND/$cmd/g;
1361 return run_command "$cp_exec";
1362}
1363
1364sub run_scp {
1365 my ($src, $dst, $cp_scp) = @_;
1366
1367 $cp_scp =~ s/\$SRC_FILE/$src/g;
1368 $cp_scp =~ s/\$DST_FILE/$dst/g;
1369
1370 return run_command "$cp_scp";
1371}
1372
1373sub run_scp_install {
1374 my ($src, $dst) = @_;
1375
1376 my $cp_scp = $scp_to_target_install;
1377
1378 return run_scp($src, $dst, $cp_scp);
1379}
1380
1381sub run_scp_mod {
1382 my ($src, $dst) = @_;
1383
1384 my $cp_scp = $scp_to_target;
1385
1386 return run_scp($src, $dst, $cp_scp);
1387}
1388
1389sub get_grub_index {
1390
1391 if ($reboot_type ne "grub") {
1392 return;
1393 }
1394 return if (defined($grub_number));
1395
1396 doprint "Find grub menu ... ";
1397 $grub_number = -1;
1398
1399 my $ssh_grub = $ssh_exec;
1400 $ssh_grub =~ s,\$SSH_COMMAND,cat /boot/grub/menu.lst,g;
1401
1402 open(IN, "$ssh_grub |")
1403 or die "unable to get menu.lst";
1404
1405 my $found = 0;
1406
1407 while (<IN>) {
1408 if (/^\s*title\s+$grub_menu\s*$/) {
1409 $grub_number++;
1410 $found = 1;
1411 last;
1412 } elsif (/^\s*title\s/) {
1413 $grub_number++;
1414 }
1415 }
1416 close(IN);
1417
1418 die "Could not find '$grub_menu' in /boot/grub/menu on $machine"
1419 if (!$found);
1420 doprint "$grub_number\n";
1421}
1422
1423sub wait_for_input
1424{
1425 my ($fp, $time) = @_;
1426 my $rin;
1427 my $ready;
1428 my $line;
1429 my $ch;
1430
1431 if (!defined($time)) {
1432 $time = $timeout;
1433 }
1434
1435 $rin = '';
1436 vec($rin, fileno($fp), 1) = 1;
1437 $ready = select($rin, undef, undef, $time);
1438
1439 $line = "";
1440
1441 # try to read one char at a time
1442 while (sysread $fp, $ch, 1) {
1443 $line .= $ch;
1444 last if ($ch eq "\n");
1445 }
1446
1447 if (!length($line)) {
1448 return undef;
1449 }
1450
1451 return $line;
1452}
1453
1454sub reboot_to {
1455 if (defined($switch_to_test)) {
1456 run_command $switch_to_test;
1457 }
1458
1459 if ($reboot_type eq "grub") {
1460 run_ssh "'(echo \"savedefault --default=$grub_number --once\" | grub --batch)'";
1461 } elsif (defined $reboot_script) {
1462 run_command "$reboot_script";
1463 }
1464 reboot;
1465}
1466
1467sub get_sha1 {
1468 my ($commit) = @_;
1469
1470 doprint "git rev-list --max-count=1 $commit ... ";
1471 my $sha1 = `git rev-list --max-count=1 $commit`;
1472 my $ret = $?;
1473
1474 logit $sha1;
1475
1476 if ($ret) {
1477 doprint "FAILED\n";
1478 dodie "Failed to get git $commit";
1479 }
1480
1481 print "SUCCESS\n";
1482
1483 chomp $sha1;
1484
1485 return $sha1;
1486}
1487
1488sub monitor {
1489 my $booted = 0;
1490 my $bug = 0;
1491 my $bug_ignored = 0;
1492 my $skip_call_trace = 0;
1493 my $loops;
1494
1495 wait_for_monitor 5;
1496
1497 my $line;
1498 my $full_line = "";
1499
1500 open(DMESG, "> $dmesg") or
1501 die "unable to write to $dmesg";
1502
1503 reboot_to;
1504
1505 my $success_start;
1506 my $failure_start;
1507 my $monitor_start = time;
1508 my $done = 0;
1509 my $version_found = 0;
1510
1511 while (!$done) {
1512
1513 if ($bug && defined($stop_after_failure) &&
1514 $stop_after_failure >= 0) {
1515 my $time = $stop_after_failure - (time - $failure_start);
1516 $line = wait_for_input($monitor_fp, $time);
1517 if (!defined($line)) {
1518 doprint "bug timed out after $booted_timeout seconds\n";
1519 doprint "Test forced to stop after $stop_after_failure seconds after failure\n";
1520 last;
1521 }
1522 } elsif ($booted) {
1523 $line = wait_for_input($monitor_fp, $booted_timeout);
1524 if (!defined($line)) {
1525 my $s = $booted_timeout == 1 ? "" : "s";
1526 doprint "Successful boot found: break after $booted_timeout second$s\n";
1527 last;
1528 }
1529 } else {
1530 $line = wait_for_input($monitor_fp);
1531 if (!defined($line)) {
1532 my $s = $timeout == 1 ? "" : "s";
1533 doprint "Timed out after $timeout second$s\n";
1534 last;
1535 }
1536 }
1537
1538 doprint $line;
1539 print DMESG $line;
1540
1541 # we are not guaranteed to get a full line
1542 $full_line .= $line;
1543
1544 if ($full_line =~ /$success_line/) {
1545 $booted = 1;
1546 $success_start = time;
1547 }
1548
1549 if ($booted && defined($stop_after_success) &&
1550 $stop_after_success >= 0) {
1551 my $now = time;
1552 if ($now - $success_start >= $stop_after_success) {
1553 doprint "Test forced to stop after $stop_after_success seconds after success\n";
1554 last;
1555 }
1556 }
1557
1558 if ($full_line =~ /\[ backtrace testing \]/) {
1559 $skip_call_trace = 1;
1560 }
1561
1562 if ($full_line =~ /call trace:/i) {
1563 if (!$bug && !$skip_call_trace) {
1564 if ($ignore_errors) {
1565 $bug_ignored = 1;
1566 } else {
1567 $bug = 1;
1568 $failure_start = time;
1569 }
1570 }
1571 }
1572
1573 if ($bug && defined($stop_after_failure) &&
1574 $stop_after_failure >= 0) {
1575 my $now = time;
1576 if ($now - $failure_start >= $stop_after_failure) {
1577 doprint "Test forced to stop after $stop_after_failure seconds after failure\n";
1578 last;
1579 }
1580 }
1581
1582 if ($full_line =~ /\[ end of backtrace testing \]/) {
1583 $skip_call_trace = 0;
1584 }
1585
1586 if ($full_line =~ /Kernel panic -/) {
1587 $failure_start = time;
1588 $bug = 1;
1589 }
1590
1591 # Detect triple faults by testing the banner
1592 if ($full_line =~ /\bLinux version (\S+).*\n/) {
1593 if ($1 eq $version) {
1594 $version_found = 1;
1595 } elsif ($version_found && $detect_triplefault) {
1596 # We already booted into the kernel we are testing,
1597 # but now we booted into another kernel?
1598 # Consider this a triple fault.
1599 doprint "Aleady booted in Linux kernel $version, but now\n";
1600 doprint "we booted into Linux kernel $1.\n";
1601 doprint "Assuming that this is a triple fault.\n";
1602 doprint "To disable this: set DETECT_TRIPLE_FAULT to 0\n";
1603 last;
1604 }
1605 }
1606
1607 if ($line =~ /\n/) {
1608 $full_line = "";
1609 }
1610
1611 if ($stop_test_after > 0 && !$booted && !$bug) {
1612 if (time - $monitor_start > $stop_test_after) {
1613 doprint "STOP_TEST_AFTER ($stop_test_after seconds) timed out\n";
1614 $done = 1;
1615 }
1616 }
1617 }
1618
1619 close(DMESG);
1620
1621 if ($bug) {
1622 return 0 if ($in_bisect);
1623 fail "failed - got a bug report" and return 0;
1624 }
1625
1626 if (!$booted) {
1627 return 0 if ($in_bisect);
1628 fail "failed - never got a boot prompt." and return 0;
1629 }
1630
1631 if ($bug_ignored) {
1632 doprint "WARNING: Call Trace detected but ignored due to IGNORE_ERRORS=1\n";
1633 }
1634
1635 return 1;
1636}
1637
1638sub eval_kernel_version {
1639 my ($option) = @_;
1640
1641 $option =~ s/\$KERNEL_VERSION/$version/g;
1642
1643 return $option;
1644}
1645
1646sub do_post_install {
1647
1648 return if (!defined($post_install));
1649
1650 my $cp_post_install = eval_kernel_version $post_install;
1651 run_command "$cp_post_install" or
1652 dodie "Failed to run post install";
1653}
1654
1655sub install {
1656
1657 return if ($no_install);
1658
1659 my $cp_target = eval_kernel_version $target_image;
1660
1661 run_scp_install "$outputdir/$build_target", "$cp_target" or
1662 dodie "failed to copy image";
1663
1664 my $install_mods = 0;
1665
1666 # should we process modules?
1667 $install_mods = 0;
1668 open(IN, "$output_config") or dodie("Can't read config file");
1669 while (<IN>) {
1670 if (/CONFIG_MODULES(=y)?/) {
1671 $install_mods = 1 if (defined($1));
1672 last;
1673 }
1674 }
1675 close(IN);
1676
1677 if (!$install_mods) {
1678 do_post_install;
1679 doprint "No modules needed\n";
1680 return;
1681 }
1682
1683 run_command "$make INSTALL_MOD_STRIP=1 INSTALL_MOD_PATH=$tmpdir modules_install" or
1684 dodie "Failed to install modules";
1685
1686 my $modlib = "/lib/modules/$version";
1687 my $modtar = "ktest-mods.tar.bz2";
1688
1689 run_ssh "rm -rf $modlib" or
1690 dodie "failed to remove old mods: $modlib";
1691
1692 # would be nice if scp -r did not follow symbolic links
1693 run_command "cd $tmpdir && tar -cjf $modtar lib/modules/$version" or
1694 dodie "making tarball";
1695
1696 run_scp_mod "$tmpdir/$modtar", "/tmp" or
1697 dodie "failed to copy modules";
1698
1699 unlink "$tmpdir/$modtar";
1700
1701 run_ssh "'(cd / && tar xjf /tmp/$modtar)'" or
1702 dodie "failed to tar modules";
1703
1704 run_ssh "rm -f /tmp/$modtar";
1705
1706 do_post_install;
1707}
1708
1709sub get_version {
1710 # get the release name
1711 return if ($have_version);
1712 doprint "$make kernelrelease ... ";
1713 $version = `$make kernelrelease | tail -1`;
1714 chomp($version);
1715 doprint "$version\n";
1716 $have_version = 1;
1717}
1718
1719sub start_monitor_and_boot {
1720 # Make sure the stable kernel has finished booting
1721 start_monitor;
1722 wait_for_monitor 5;
1723 end_monitor;
1724
1725 get_grub_index;
1726 get_version;
1727 install;
1728
1729 start_monitor;
1730 return monitor;
1731}
1732
1733sub check_buildlog {
1734 my ($patch) = @_;
1735
1736 my @files = `git show $patch | diffstat -l`;
1737
1738 open(IN, "git show $patch |") or
1739 dodie "failed to show $patch";
1740 while (<IN>) {
1741 if (m,^--- a/(.*),) {
1742 chomp $1;
1743 $files[$#files] = $1;
1744 }
1745 }
1746 close(IN);
1747
1748 open(IN, $buildlog) or dodie "Can't open $buildlog";
1749 while (<IN>) {
1750 if (/^\s*(.*?):.*(warning|error)/) {
1751 my $err = $1;
1752 foreach my $file (@files) {
1753 my $fullpath = "$builddir/$file";
1754 if ($file eq $err || $fullpath eq $err) {
1755 fail "$file built with warnings" and return 0;
1756 }
1757 }
1758 }
1759 }
1760 close(IN);
1761
1762 return 1;
1763}
1764
1765sub apply_min_config {
1766 my $outconfig = "$output_config.new";
1767
1768 # Read the config file and remove anything that
1769 # is in the force_config hash (from minconfig and others)
1770 # then add the force config back.
1771
1772 doprint "Applying minimum configurations into $output_config.new\n";
1773
1774 open (OUT, ">$outconfig") or
1775 dodie "Can't create $outconfig";
1776
1777 if (-f $output_config) {
1778 open (IN, $output_config) or
1779 dodie "Failed to open $output_config";
1780 while (<IN>) {
1781 if (/^(# )?(CONFIG_[^\s=]*)/) {
1782 next if (defined($force_config{$2}));
1783 }
1784 print OUT;
1785 }
1786 close IN;
1787 }
1788 foreach my $config (keys %force_config) {
1789 print OUT "$force_config{$config}\n";
1790 }
1791 close OUT;
1792
1793 run_command "mv $outconfig $output_config";
1794}
1795
1796sub make_oldconfig {
1797
1798 my @force_list = keys %force_config;
1799
1800 if ($#force_list >= 0) {
1801 apply_min_config;
1802 }
1803
1804 if (!run_command "$make oldnoconfig") {
1805 # Perhaps oldnoconfig doesn't exist in this version of the kernel
1806 # try a yes '' | oldconfig
1807 doprint "oldnoconfig failed, trying yes '' | make oldconfig\n";
1808 run_command "yes '' | $make oldconfig" or
1809 dodie "failed make config oldconfig";
1810 }
1811}
1812
1813# read a config file and use this to force new configs.
1814sub load_force_config {
1815 my ($config) = @_;
1816
1817 open(IN, $config) or
1818 dodie "failed to read $config";
1819 while (<IN>) {
1820 chomp;
1821 if (/^(CONFIG[^\s=]*)(\s*=.*)/) {
1822 $force_config{$1} = $_;
1823 } elsif (/^# (CONFIG_\S*) is not set/) {
1824 $force_config{$1} = $_;
1825 }
1826 }
1827 close IN;
1828}
1829
1830sub build {
1831 my ($type) = @_;
1832
1833 unlink $buildlog;
1834
1835 # Failed builds should not reboot the target
1836 my $save_no_reboot = $no_reboot;
1837 $no_reboot = 1;
1838
1839 # Calculate a new version from here.
1840 $have_version = 0;
1841
1842 if (defined($pre_build)) {
1843 my $ret = run_command $pre_build;
1844 if (!$ret && defined($pre_build_die) &&
1845 $pre_build_die) {
1846 dodie "failed to pre_build\n";
1847 }
1848 }
1849
1850 if ($type =~ /^useconfig:(.*)/) {
1851 run_command "cp $1 $output_config" or
1852 dodie "could not copy $1 to .config";
1853
1854 $type = "oldconfig";
1855 }
1856
1857 # old config can ask questions
1858 if ($type eq "oldconfig") {
1859 $type = "oldnoconfig";
1860
1861 # allow for empty configs
1862 run_command "touch $output_config";
1863
1864 if (!$noclean) {
1865 run_command "mv $output_config $outputdir/config_temp" or
1866 dodie "moving .config";
1867
1868 run_command "$make mrproper" or dodie "make mrproper";
1869
1870 run_command "mv $outputdir/config_temp $output_config" or
1871 dodie "moving config_temp";
1872 }
1873
1874 } elsif (!$noclean) {
1875 unlink "$output_config";
1876 run_command "$make mrproper" or
1877 dodie "make mrproper";
1878 }
1879
1880 # add something to distinguish this build
1881 open(OUT, "> $outputdir/localversion") or dodie("Can't make localversion file");
1882 print OUT "$localversion\n";
1883 close(OUT);
1884
1885 if (defined($minconfig)) {
1886 load_force_config($minconfig);
1887 }
1888
1889 if ($type ne "oldnoconfig") {
1890 run_command "$make $type" or
1891 dodie "failed make config";
1892 }
1893 # Run old config regardless, to enforce min configurations
1894 make_oldconfig;
1895
1896 $redirect = "$buildlog";
1897 my $build_ret = run_command "$make $build_options";
1898 undef $redirect;
1899
1900 if (defined($post_build)) {
1901 # Because a post build may change the kernel version
1902 # do it now.
1903 get_version;
1904 my $ret = run_command $post_build;
1905 if (!$ret && defined($post_build_die) &&
1906 $post_build_die) {
1907 dodie "failed to post_build\n";
1908 }
1909 }
1910
1911 if (!$build_ret) {
1912 # bisect may need this to pass
1913 if ($in_bisect) {
1914 $no_reboot = $save_no_reboot;
1915 return 0;
1916 }
1917 fail "failed build" and return 0;
1918 }
1919
1920 $no_reboot = $save_no_reboot;
1921
1922 return 1;
1923}
1924
1925sub halt {
1926 if (!run_ssh "halt" or defined($power_off)) {
1927 if (defined($poweroff_after_halt)) {
1928 sleep $poweroff_after_halt;
1929 run_command "$power_off";
1930 }
1931 } else {
1932 # nope? the zap it!
1933 run_command "$power_off";
1934 }
1935}
1936
1937sub success {
1938 my ($i) = @_;
1939
1940 $successes++;
1941
1942 my $name = "";
1943
1944 if (defined($test_name)) {
1945 $name = " ($test_name)";
1946 }
1947
1948 doprint "\n\n*******************************************\n";
1949 doprint "*******************************************\n";
1950 doprint "KTEST RESULT: TEST $i$name SUCCESS!!!! **\n";
1951 doprint "*******************************************\n";
1952 doprint "*******************************************\n";
1953
1954 if (defined($store_successes)) {
1955 save_logs "success", $store_successes;
1956 }
1957
1958 if ($i != $opt{"NUM_TESTS"} && !do_not_reboot) {
1959 doprint "Reboot and wait $sleep_time seconds\n";
1960 reboot_to_good $sleep_time;
1961 }
1962}
1963
1964sub answer_bisect {
1965 for (;;) {
1966 doprint "Pass or fail? [p/f]";
1967 my $ans = <STDIN>;
1968 chomp $ans;
1969 if ($ans eq "p" || $ans eq "P") {
1970 return 1;
1971 } elsif ($ans eq "f" || $ans eq "F") {
1972 return 0;
1973 } else {
1974 print "Please answer 'P' or 'F'\n";
1975 }
1976 }
1977}
1978
1979sub child_run_test {
1980 my $failed = 0;
1981
1982 # child should have no power
1983 $reboot_on_error = 0;
1984 $poweroff_on_error = 0;
1985 $die_on_failure = 1;
1986
1987 $redirect = "$testlog";
1988 run_command $run_test or $failed = 1;
1989 undef $redirect;
1990
1991 exit $failed;
1992}
1993
1994my $child_done;
1995
1996sub child_finished {
1997 $child_done = 1;
1998}
1999
2000sub do_run_test {
2001 my $child_pid;
2002 my $child_exit;
2003 my $line;
2004 my $full_line;
2005 my $bug = 0;
2006
2007 wait_for_monitor 1;
2008
2009 doprint "run test $run_test\n";
2010
2011 $child_done = 0;
2012
2013 $SIG{CHLD} = qw(child_finished);
2014
2015 $child_pid = fork;
2016
2017 child_run_test if (!$child_pid);
2018
2019 $full_line = "";
2020
2021 do {
2022 $line = wait_for_input($monitor_fp, 1);
2023 if (defined($line)) {
2024
2025 # we are not guaranteed to get a full line
2026 $full_line .= $line;
2027 doprint $line;
2028
2029 if ($full_line =~ /call trace:/i) {
2030 $bug = 1;
2031 }
2032
2033 if ($full_line =~ /Kernel panic -/) {
2034 $bug = 1;
2035 }
2036
2037 if ($line =~ /\n/) {
2038 $full_line = "";
2039 }
2040 }
2041 } while (!$child_done && !$bug);
2042
2043 if ($bug) {
2044 my $failure_start = time;
2045 my $now;
2046 do {
2047 $line = wait_for_input($monitor_fp, 1);
2048 if (defined($line)) {
2049 doprint $line;
2050 }
2051 $now = time;
2052 if ($now - $failure_start >= $stop_after_failure) {
2053 last;
2054 }
2055 } while (defined($line));
2056
2057 doprint "Detected kernel crash!\n";
2058 # kill the child with extreme prejudice
2059 kill 9, $child_pid;
2060 }
2061
2062 waitpid $child_pid, 0;
2063 $child_exit = $?;
2064
2065 if (!$bug && $in_bisect) {
2066 if (defined($bisect_ret_good)) {
2067 if ($child_exit == $bisect_ret_good) {
2068 return 1;
2069 }
2070 }
2071 if (defined($bisect_ret_skip)) {
2072 if ($child_exit == $bisect_ret_skip) {
2073 return -1;
2074 }
2075 }
2076 if (defined($bisect_ret_abort)) {
2077 if ($child_exit == $bisect_ret_abort) {
2078 fail "test abort" and return -2;
2079 }
2080 }
2081 if (defined($bisect_ret_bad)) {
2082 if ($child_exit == $bisect_ret_skip) {
2083 return 0;
2084 }
2085 }
2086 if (defined($bisect_ret_default)) {
2087 if ($bisect_ret_default eq "good") {
2088 return 1;
2089 } elsif ($bisect_ret_default eq "bad") {
2090 return 0;
2091 } elsif ($bisect_ret_default eq "skip") {
2092 return -1;
2093 } elsif ($bisect_ret_default eq "abort") {
2094 return -2;
2095 } else {
2096 fail "unknown default action: $bisect_ret_default"
2097 and return -2;
2098 }
2099 }
2100 }
2101
2102 if ($bug || $child_exit) {
2103 return 0 if $in_bisect;
2104 fail "test failed" and return 0;
2105 }
2106 return 1;
2107}
2108
2109sub run_git_bisect {
2110 my ($command) = @_;
2111
2112 doprint "$command ... ";
2113
2114 my $output = `$command 2>&1`;
2115 my $ret = $?;
2116
2117 logit $output;
2118
2119 if ($ret) {
2120 doprint "FAILED\n";
2121 dodie "Failed to git bisect";
2122 }
2123
2124 doprint "SUCCESS\n";
2125 if ($output =~ m/^(Bisecting: .*\(roughly \d+ steps?\))\s+\[([[:xdigit:]]+)\]/) {
2126 doprint "$1 [$2]\n";
2127 } elsif ($output =~ m/^([[:xdigit:]]+) is the first bad commit/) {
2128 $bisect_bad_commit = $1;
2129 doprint "Found bad commit... $1\n";
2130 return 0;
2131 } else {
2132 # we already logged it, just print it now.
2133 print $output;
2134 }
2135
2136 return 1;
2137}
2138
2139sub bisect_reboot {
2140 doprint "Reboot and sleep $bisect_sleep_time seconds\n";
2141 reboot_to_good $bisect_sleep_time;
2142}
2143
2144# returns 1 on success, 0 on failure, -1 on skip
2145sub run_bisect_test {
2146 my ($type, $buildtype) = @_;
2147
2148 my $failed = 0;
2149 my $result;
2150 my $output;
2151 my $ret;
2152
2153 $in_bisect = 1;
2154
2155 build $buildtype or $failed = 1;
2156
2157 if ($type ne "build") {
2158 if ($failed && $bisect_skip) {
2159 $in_bisect = 0;
2160 return -1;
2161 }
2162 dodie "Failed on build" if $failed;
2163
2164 # Now boot the box
2165 start_monitor_and_boot or $failed = 1;
2166
2167 if ($type ne "boot") {
2168 if ($failed && $bisect_skip) {
2169 end_monitor;
2170 bisect_reboot;
2171 $in_bisect = 0;
2172 return -1;
2173 }
2174 dodie "Failed on boot" if $failed;
2175
2176 do_run_test or $failed = 1;
2177 }
2178 end_monitor;
2179 }
2180
2181 if ($failed) {
2182 $result = 0;
2183 } else {
2184 $result = 1;
2185 }
2186
2187 # reboot the box to a kernel we can ssh to
2188 if ($type ne "build") {
2189 bisect_reboot;
2190 }
2191 $in_bisect = 0;
2192
2193 return $result;
2194}
2195
2196sub run_bisect {
2197 my ($type) = @_;
2198 my $buildtype = "oldconfig";
2199
2200 # We should have a minconfig to use?
2201 if (defined($minconfig)) {
2202 $buildtype = "useconfig:$minconfig";
2203 }
2204
2205 my $ret = run_bisect_test $type, $buildtype;
2206
2207 if ($bisect_manual) {
2208 $ret = answer_bisect;
2209 }
2210
2211 # Are we looking for where it worked, not failed?
2212 if ($reverse_bisect && $ret >= 0) {
2213 $ret = !$ret;
2214 }
2215
2216 if ($ret > 0) {
2217 return "good";
2218 } elsif ($ret == 0) {
2219 return "bad";
2220 } elsif ($bisect_skip) {
2221 doprint "HIT A BAD COMMIT ... SKIPPING\n";
2222 return "skip";
2223 }
2224}
2225
2226sub update_bisect_replay {
2227 my $tmp_log = "$tmpdir/ktest_bisect_log";
2228 run_command "git bisect log > $tmp_log" or
2229 die "can't create bisect log";
2230 return $tmp_log;
2231}
2232
2233sub bisect {
2234 my ($i) = @_;
2235
2236 my $result;
2237
2238 die "BISECT_GOOD[$i] not defined\n" if (!defined($bisect_good));
2239 die "BISECT_BAD[$i] not defined\n" if (!defined($bisect_bad));
2240 die "BISECT_TYPE[$i] not defined\n" if (!defined($bisect_type));
2241
2242 my $good = $bisect_good;
2243 my $bad = $bisect_bad;
2244 my $type = $bisect_type;
2245 my $start = $bisect_start;
2246 my $replay = $bisect_replay;
2247 my $start_files = $bisect_files;
2248
2249 if (defined($start_files)) {
2250 $start_files = " -- " . $start_files;
2251 } else {
2252 $start_files = "";
2253 }
2254
2255 # convert to true sha1's
2256 $good = get_sha1($good);
2257 $bad = get_sha1($bad);
2258
2259 if (defined($bisect_reverse) && $bisect_reverse == 1) {
2260 doprint "Performing a reverse bisect (bad is good, good is bad!)\n";
2261 $reverse_bisect = 1;
2262 } else {
2263 $reverse_bisect = 0;
2264 }
2265
2266 # Can't have a test without having a test to run
2267 if ($type eq "test" && !defined($run_test)) {
2268 $type = "boot";
2269 }
2270
2271 # Check if a bisect was running
2272 my $bisect_start_file = "$builddir/.git/BISECT_START";
2273
2274 my $check = $bisect_check;
2275 my $do_check = defined($check) && $check ne "0";
2276
2277 if ( -f $bisect_start_file ) {
2278 print "Bisect in progress found\n";
2279 if ($do_check) {
2280 print " If you say yes, then no checks of good or bad will be done\n";
2281 }
2282 if (defined($replay)) {
2283 print "** BISECT_REPLAY is defined in config file **";
2284 print " Ignore config option and perform new git bisect log?\n";
2285 if (read_ync " (yes, no, or cancel) ") {
2286 $replay = update_bisect_replay;
2287 $do_check = 0;
2288 }
2289 } elsif (read_yn "read git log and continue?") {
2290 $replay = update_bisect_replay;
2291 $do_check = 0;
2292 }
2293 }
2294
2295 if ($do_check) {
2296
2297 # get current HEAD
2298 my $head = get_sha1("HEAD");
2299
2300 if ($check ne "good") {
2301 doprint "TESTING BISECT BAD [$bad]\n";
2302 run_command "git checkout $bad" or
2303 die "Failed to checkout $bad";
2304
2305 $result = run_bisect $type;
2306
2307 if ($result ne "bad") {
2308 fail "Tested BISECT_BAD [$bad] and it succeeded" and return 0;
2309 }
2310 }
2311
2312 if ($check ne "bad") {
2313 doprint "TESTING BISECT GOOD [$good]\n";
2314 run_command "git checkout $good" or
2315 die "Failed to checkout $good";
2316
2317 $result = run_bisect $type;
2318
2319 if ($result ne "good") {
2320 fail "Tested BISECT_GOOD [$good] and it failed" and return 0;
2321 }
2322 }
2323
2324 # checkout where we started
2325 run_command "git checkout $head" or
2326 die "Failed to checkout $head";
2327 }
2328
2329 run_command "git bisect start$start_files" or
2330 dodie "could not start bisect";
2331
2332 run_command "git bisect good $good" or
2333 dodie "could not set bisect good to $good";
2334
2335 run_git_bisect "git bisect bad $bad" or
2336 dodie "could not set bisect bad to $bad";
2337
2338 if (defined($replay)) {
2339 run_command "git bisect replay $replay" or
2340 dodie "failed to run replay";
2341 }
2342
2343 if (defined($start)) {
2344 run_command "git checkout $start" or
2345 dodie "failed to checkout $start";
2346 }
2347
2348 my $test;
2349 do {
2350 $result = run_bisect $type;
2351 $test = run_git_bisect "git bisect $result";
2352 } while ($test);
2353
2354 run_command "git bisect log" or
2355 dodie "could not capture git bisect log";
2356
2357 run_command "git bisect reset" or
2358 dodie "could not reset git bisect";
2359
2360 doprint "Bad commit was [$bisect_bad_commit]\n";
2361
2362 success $i;
2363}
2364
2365my %config_ignore;
2366my %config_set;
2367
2368my %config_list;
2369my %null_config;
2370
2371my %dependency;
2372
2373sub assign_configs {
2374 my ($hash, $config) = @_;
2375
2376 open (IN, $config)
2377 or dodie "Failed to read $config";
2378
2379 while (<IN>) {
2380 if (/^((CONFIG\S*)=.*)/) {
2381 ${$hash}{$2} = $1;
2382 }
2383 }
2384
2385 close(IN);
2386}
2387
2388sub process_config_ignore {
2389 my ($config) = @_;
2390
2391 assign_configs \%config_ignore, $config;
2392}
2393
2394sub read_current_config {
2395 my ($config_ref) = @_;
2396
2397 %{$config_ref} = ();
2398 undef %{$config_ref};
2399
2400 my @key = keys %{$config_ref};
2401 if ($#key >= 0) {
2402 print "did not delete!\n";
2403 exit;
2404 }
2405 open (IN, "$output_config");
2406
2407 while (<IN>) {
2408 if (/^(CONFIG\S+)=(.*)/) {
2409 ${$config_ref}{$1} = $2;
2410 }
2411 }
2412 close(IN);
2413}
2414
2415sub get_dependencies {
2416 my ($config) = @_;
2417
2418 my $arr = $dependency{$config};
2419 if (!defined($arr)) {
2420 return ();
2421 }
2422
2423 my @deps = @{$arr};
2424
2425 foreach my $dep (@{$arr}) {
2426 print "ADD DEP $dep\n";
2427 @deps = (@deps, get_dependencies $dep);
2428 }
2429
2430 return @deps;
2431}
2432
2433sub create_config {
2434 my @configs = @_;
2435
2436 open(OUT, ">$output_config") or dodie "Can not write to $output_config";
2437
2438 foreach my $config (@configs) {
2439 print OUT "$config_set{$config}\n";
2440 my @deps = get_dependencies $config;
2441 foreach my $dep (@deps) {
2442 print OUT "$config_set{$dep}\n";
2443 }
2444 }
2445
2446 foreach my $config (keys %config_ignore) {
2447 print OUT "$config_ignore{$config}\n";
2448 }
2449 close(OUT);
2450
2451# exit;
2452 make_oldconfig;
2453}
2454
2455sub compare_configs {
2456 my (%a, %b) = @_;
2457
2458 foreach my $item (keys %a) {
2459 if (!defined($b{$item})) {
2460 print "diff $item\n";
2461 return 1;
2462 }
2463 delete $b{$item};
2464 }
2465
2466 my @keys = keys %b;
2467 if ($#keys) {
2468 print "diff2 $keys[0]\n";
2469 }
2470 return -1 if ($#keys >= 0);
2471
2472 return 0;
2473}
2474
2475sub run_config_bisect_test {
2476 my ($type) = @_;
2477
2478 return run_bisect_test $type, "oldconfig";
2479}
2480
2481sub process_passed {
2482 my (%configs) = @_;
2483
2484 doprint "These configs had no failure: (Enabling them for further compiles)\n";
2485 # Passed! All these configs are part of a good compile.
2486 # Add them to the min options.
2487 foreach my $config (keys %configs) {
2488 if (defined($config_list{$config})) {
2489 doprint " removing $config\n";
2490 $config_ignore{$config} = $config_list{$config};
2491 delete $config_list{$config};
2492 }
2493 }
2494 doprint "config copied to $outputdir/config_good\n";
2495 run_command "cp -f $output_config $outputdir/config_good";
2496}
2497
2498sub process_failed {
2499 my ($config) = @_;
2500
2501 doprint "\n\n***************************************\n";
2502 doprint "Found bad config: $config\n";
2503 doprint "***************************************\n\n";
2504}
2505
2506sub run_config_bisect {
2507
2508 my @start_list = keys %config_list;
2509
2510 if ($#start_list < 0) {
2511 doprint "No more configs to test!!!\n";
2512 return -1;
2513 }
2514
2515 doprint "***** RUN TEST ***\n";
2516 my $type = $config_bisect_type;
2517 my $ret;
2518 my %current_config;
2519
2520 my $count = $#start_list + 1;
2521 doprint " $count configs to test\n";
2522
2523 my $half = int($#start_list / 2);
2524
2525 do {
2526 my @tophalf = @start_list[0 .. $half];
2527
2528 create_config @tophalf;
2529 read_current_config \%current_config;
2530
2531 $count = $#tophalf + 1;
2532 doprint "Testing $count configs\n";
2533 my $found = 0;
2534 # make sure we test something
2535 foreach my $config (@tophalf) {
2536 if (defined($current_config{$config})) {
2537 logit " $config\n";
2538 $found = 1;
2539 }
2540 }
2541 if (!$found) {
2542 # try the other half
2543 doprint "Top half produced no set configs, trying bottom half\n";
2544 @tophalf = @start_list[$half + 1 .. $#start_list];
2545 create_config @tophalf;
2546 read_current_config \%current_config;
2547 foreach my $config (@tophalf) {
2548 if (defined($current_config{$config})) {
2549 logit " $config\n";
2550 $found = 1;
2551 }
2552 }
2553 if (!$found) {
2554 doprint "Failed: Can't make new config with current configs\n";
2555 foreach my $config (@start_list) {
2556 doprint " CONFIG: $config\n";
2557 }
2558 return -1;
2559 }
2560 $count = $#tophalf + 1;
2561 doprint "Testing $count configs\n";
2562 }
2563
2564 $ret = run_config_bisect_test $type;
2565 if ($bisect_manual) {
2566 $ret = answer_bisect;
2567 }
2568 if ($ret) {
2569 process_passed %current_config;
2570 return 0;
2571 }
2572
2573 doprint "This config had a failure.\n";
2574 doprint "Removing these configs that were not set in this config:\n";
2575 doprint "config copied to $outputdir/config_bad\n";
2576 run_command "cp -f $output_config $outputdir/config_bad";
2577
2578 # A config exists in this group that was bad.
2579 foreach my $config (keys %config_list) {
2580 if (!defined($current_config{$config})) {
2581 doprint " removing $config\n";
2582 delete $config_list{$config};
2583 }
2584 }
2585
2586 @start_list = @tophalf;
2587
2588 if ($#start_list == 0) {
2589 process_failed $start_list[0];
2590 return 1;
2591 }
2592
2593 # remove half the configs we are looking at and see if
2594 # they are good.
2595 $half = int($#start_list / 2);
2596 } while ($#start_list > 0);
2597
2598 # we found a single config, try it again unless we are running manually
2599
2600 if ($bisect_manual) {
2601 process_failed $start_list[0];
2602 return 1;
2603 }
2604
2605 my @tophalf = @start_list[0 .. 0];
2606
2607 $ret = run_config_bisect_test $type;
2608 if ($ret) {
2609 process_passed %current_config;
2610 return 0;
2611 }
2612
2613 process_failed $start_list[0];
2614 return 1;
2615}
2616
2617sub config_bisect {
2618 my ($i) = @_;
2619
2620 my $start_config = $config_bisect;
2621
2622 my $tmpconfig = "$tmpdir/use_config";
2623
2624 if (defined($config_bisect_good)) {
2625 process_config_ignore $config_bisect_good;
2626 }
2627
2628 # Make the file with the bad config and the min config
2629 if (defined($minconfig)) {
2630 # read the min config for things to ignore
2631 run_command "cp $minconfig $tmpconfig" or
2632 dodie "failed to copy $minconfig to $tmpconfig";
2633 } else {
2634 unlink $tmpconfig;
2635 }
2636
2637 if (-f $tmpconfig) {
2638 load_force_config($tmpconfig);
2639 process_config_ignore $tmpconfig;
2640 }
2641
2642 # now process the start config
2643 run_command "cp $start_config $output_config" or
2644 dodie "failed to copy $start_config to $output_config";
2645
2646 # read directly what we want to check
2647 my %config_check;
2648 open (IN, $output_config)
2649 or dodie "failed to open $output_config";
2650
2651 while (<IN>) {
2652 if (/^((CONFIG\S*)=.*)/) {
2653 $config_check{$2} = $1;
2654 }
2655 }
2656 close(IN);
2657
2658 # Now run oldconfig with the minconfig
2659 make_oldconfig;
2660
2661 # check to see what we lost (or gained)
2662 open (IN, $output_config)
2663 or dodie "Failed to read $start_config";
2664
2665 my %removed_configs;
2666 my %added_configs;
2667
2668 while (<IN>) {
2669 if (/^((CONFIG\S*)=.*)/) {
2670 # save off all options
2671 $config_set{$2} = $1;
2672 if (defined($config_check{$2})) {
2673 if (defined($config_ignore{$2})) {
2674 $removed_configs{$2} = $1;
2675 } else {
2676 $config_list{$2} = $1;
2677 }
2678 } elsif (!defined($config_ignore{$2})) {
2679 $added_configs{$2} = $1;
2680 $config_list{$2} = $1;
2681 }
2682 }
2683 }
2684 close(IN);
2685
2686 my @confs = keys %removed_configs;
2687 if ($#confs >= 0) {
2688 doprint "Configs overridden by default configs and removed from check:\n";
2689 foreach my $config (@confs) {
2690 doprint " $config\n";
2691 }
2692 }
2693 @confs = keys %added_configs;
2694 if ($#confs >= 0) {
2695 doprint "Configs appearing in make oldconfig and added:\n";
2696 foreach my $config (@confs) {
2697 doprint " $config\n";
2698 }
2699 }
2700
2701 my %config_test;
2702 my $once = 0;
2703
2704 # Sometimes kconfig does weird things. We must make sure
2705 # that the config we autocreate has everything we need
2706 # to test, otherwise we may miss testing configs, or
2707 # may not be able to create a new config.
2708 # Here we create a config with everything set.
2709 create_config (keys %config_list);
2710 read_current_config \%config_test;
2711 foreach my $config (keys %config_list) {
2712 if (!defined($config_test{$config})) {
2713 if (!$once) {
2714 $once = 1;
2715 doprint "Configs not produced by kconfig (will not be checked):\n";
2716 }
2717 doprint " $config\n";
2718 delete $config_list{$config};
2719 }
2720 }
2721 my $ret;
2722 do {
2723 $ret = run_config_bisect;
2724 } while (!$ret);
2725
2726 return $ret if ($ret < 0);
2727
2728 success $i;
2729}
2730
2731sub patchcheck_reboot {
2732 doprint "Reboot and sleep $patchcheck_sleep_time seconds\n";
2733 reboot_to_good $patchcheck_sleep_time;
2734}
2735
2736sub patchcheck {
2737 my ($i) = @_;
2738
2739 die "PATCHCHECK_START[$i] not defined\n"
2740 if (!defined($patchcheck_start));
2741 die "PATCHCHECK_TYPE[$i] not defined\n"
2742 if (!defined($patchcheck_type));
2743
2744 my $start = $patchcheck_start;
2745
2746 my $end = "HEAD";
2747 if (defined($patchcheck_end)) {
2748 $end = $patchcheck_end;
2749 }
2750
2751 # Get the true sha1's since we can use things like HEAD~3
2752 $start = get_sha1($start);
2753 $end = get_sha1($end);
2754
2755 my $type = $patchcheck_type;
2756
2757 # Can't have a test without having a test to run
2758 if ($type eq "test" && !defined($run_test)) {
2759 $type = "boot";
2760 }
2761
2762 open (IN, "git log --pretty=oneline $end|") or
2763 dodie "could not get git list";
2764
2765 my @list;
2766
2767 while (<IN>) {
2768 chomp;
2769 $list[$#list+1] = $_;
2770 last if (/^$start/);
2771 }
2772 close(IN);
2773
2774 if ($list[$#list] !~ /^$start/) {
2775 fail "SHA1 $start not found";
2776 }
2777
2778 # go backwards in the list
2779 @list = reverse @list;
2780
2781 my $save_clean = $noclean;
2782 my %ignored_warnings;
2783
2784 if (defined($ignore_warnings)) {
2785 foreach my $sha1 (split /\s+/, $ignore_warnings) {
2786 $ignored_warnings{$sha1} = 1;
2787 }
2788 }
2789
2790 $in_patchcheck = 1;
2791 foreach my $item (@list) {
2792 my $sha1 = $item;
2793 $sha1 =~ s/^([[:xdigit:]]+).*/$1/;
2794
2795 doprint "\nProcessing commit $item\n\n";
2796
2797 run_command "git checkout $sha1" or
2798 die "Failed to checkout $sha1";
2799
2800 # only clean on the first and last patch
2801 if ($item eq $list[0] ||
2802 $item eq $list[$#list]) {
2803 $noclean = $save_clean;
2804 } else {
2805 $noclean = 1;
2806 }
2807
2808 if (defined($minconfig)) {
2809 build "useconfig:$minconfig" or return 0;
2810 } else {
2811 # ?? no config to use?
2812 build "oldconfig" or return 0;
2813 }
2814
2815
2816 if (!defined($ignored_warnings{$sha1})) {
2817 check_buildlog $sha1 or return 0;
2818 }
2819
2820 next if ($type eq "build");
2821
2822 my $failed = 0;
2823
2824 start_monitor_and_boot or $failed = 1;
2825
2826 if (!$failed && $type ne "boot"){
2827 do_run_test or $failed = 1;
2828 }
2829 end_monitor;
2830 return 0 if ($failed);
2831
2832 patchcheck_reboot;
2833
2834 }
2835 $in_patchcheck = 0;
2836 success $i;
2837
2838 return 1;
2839}
2840
2841my %depends;
2842my %depcount;
2843my $iflevel = 0;
2844my @ifdeps;
2845
2846# prevent recursion
2847my %read_kconfigs;
2848
2849sub add_dep {
2850 # $config depends on $dep
2851 my ($config, $dep) = @_;
2852
2853 if (defined($depends{$config})) {
2854 $depends{$config} .= " " . $dep;
2855 } else {
2856 $depends{$config} = $dep;
2857 }
2858
2859 # record the number of configs depending on $dep
2860 if (defined $depcount{$dep}) {
2861 $depcount{$dep}++;
2862 } else {
2863 $depcount{$dep} = 1;
2864 }
2865}
2866
2867# taken from streamline_config.pl
2868sub read_kconfig {
2869 my ($kconfig) = @_;
2870
2871 my $state = "NONE";
2872 my $config;
2873 my @kconfigs;
2874
2875 my $cont = 0;
2876 my $line;
2877
2878
2879 if (! -f $kconfig) {
2880 doprint "file $kconfig does not exist, skipping\n";
2881 return;
2882 }
2883
2884 open(KIN, "$kconfig")
2885 or die "Can't open $kconfig";
2886 while (<KIN>) {
2887 chomp;
2888
2889 # Make sure that lines ending with \ continue
2890 if ($cont) {
2891 $_ = $line . " " . $_;
2892 }
2893
2894 if (s/\\$//) {
2895 $cont = 1;
2896 $line = $_;
2897 next;
2898 }
2899
2900 $cont = 0;
2901
2902 # collect any Kconfig sources
2903 if (/^source\s*"(.*)"/) {
2904 $kconfigs[$#kconfigs+1] = $1;
2905 }
2906
2907 # configs found
2908 if (/^\s*(menu)?config\s+(\S+)\s*$/) {
2909 $state = "NEW";
2910 $config = $2;
2911
2912 for (my $i = 0; $i < $iflevel; $i++) {
2913 add_dep $config, $ifdeps[$i];
2914 }
2915
2916 # collect the depends for the config
2917 } elsif ($state eq "NEW" && /^\s*depends\s+on\s+(.*)$/) {
2918
2919 add_dep $config, $1;
2920
2921 # Get the configs that select this config
2922 } elsif ($state eq "NEW" && /^\s*select\s+(\S+)/) {
2923
2924 # selected by depends on config
2925 add_dep $1, $config;
2926
2927 # Check for if statements
2928 } elsif (/^if\s+(.*\S)\s*$/) {
2929 my $deps = $1;
2930 # remove beginning and ending non text
2931 $deps =~ s/^[^a-zA-Z0-9_]*//;
2932 $deps =~ s/[^a-zA-Z0-9_]*$//;
2933
2934 my @deps = split /[^a-zA-Z0-9_]+/, $deps;
2935
2936 $ifdeps[$iflevel++] = join ':', @deps;
2937
2938 } elsif (/^endif/) {
2939
2940 $iflevel-- if ($iflevel);
2941
2942 # stop on "help"
2943 } elsif (/^\s*help\s*$/) {
2944 $state = "NONE";
2945 }
2946 }
2947 close(KIN);
2948
2949 # read in any configs that were found.
2950 foreach $kconfig (@kconfigs) {
2951 if (!defined($read_kconfigs{$kconfig})) {
2952 $read_kconfigs{$kconfig} = 1;
2953 read_kconfig("$builddir/$kconfig");
2954 }
2955 }
2956}
2957
2958sub read_depends {
2959 # find out which arch this is by the kconfig file
2960 open (IN, $output_config)
2961 or dodie "Failed to read $output_config";
2962 my $arch;
2963 while (<IN>) {
2964 if (m,Linux/(\S+)\s+\S+\s+Kernel Configuration,) {
2965 $arch = $1;
2966 last;
2967 }
2968 }
2969 close IN;
2970
2971 if (!defined($arch)) {
2972 doprint "Could not find arch from config file\n";
2973 doprint "no dependencies used\n";
2974 return;
2975 }
2976
2977 # arch is really the subarch, we need to know
2978 # what directory to look at.
2979 if ($arch eq "i386" || $arch eq "x86_64") {
2980 $arch = "x86";
2981 } elsif ($arch =~ /^tile/) {
2982 $arch = "tile";
2983 }
2984
2985 my $kconfig = "$builddir/arch/$arch/Kconfig";
2986
2987 if (! -f $kconfig && $arch =~ /\d$/) {
2988 my $orig = $arch;
2989 # some subarchs have numbers, truncate them
2990 $arch =~ s/\d*$//;
2991 $kconfig = "$builddir/arch/$arch/Kconfig";
2992 if (! -f $kconfig) {
2993 doprint "No idea what arch dir $orig is for\n";
2994 doprint "no dependencies used\n";
2995 return;
2996 }
2997 }
2998
2999 read_kconfig($kconfig);
3000}
3001
3002sub read_config_list {
3003 my ($config) = @_;
3004
3005 open (IN, $config)
3006 or dodie "Failed to read $config";
3007
3008 while (<IN>) {
3009 if (/^((CONFIG\S*)=.*)/) {
3010 if (!defined($config_ignore{$2})) {
3011 $config_list{$2} = $1;
3012 }
3013 }
3014 }
3015
3016 close(IN);
3017}
3018
3019sub read_output_config {
3020 my ($config) = @_;
3021
3022 assign_configs \%config_ignore, $config;
3023}
3024
3025sub make_new_config {
3026 my @configs = @_;
3027
3028 open (OUT, ">$output_config")
3029 or dodie "Failed to write $output_config";
3030
3031 foreach my $config (@configs) {
3032 print OUT "$config\n";
3033 }
3034 close OUT;
3035}
3036
3037sub chomp_config {
3038 my ($config) = @_;
3039
3040 $config =~ s/CONFIG_//;
3041
3042 return $config;
3043}
3044
3045sub get_depends {
3046 my ($dep) = @_;
3047
3048 my $kconfig = chomp_config $dep;
3049
3050 $dep = $depends{"$kconfig"};
3051
3052 # the dep string we have saves the dependencies as they
3053 # were found, including expressions like ! && ||. We
3054 # want to split this out into just an array of configs.
3055
3056 my $valid = "A-Za-z_0-9";
3057
3058 my @configs;
3059
3060 while ($dep =~ /[$valid]/) {
3061
3062 if ($dep =~ /^[^$valid]*([$valid]+)/) {
3063 my $conf = "CONFIG_" . $1;
3064
3065 $configs[$#configs + 1] = $conf;
3066
3067 $dep =~ s/^[^$valid]*[$valid]+//;
3068 } else {
3069 die "this should never happen";
3070 }
3071 }
3072
3073 return @configs;
3074}
3075
3076my %min_configs;
3077my %keep_configs;
3078my %save_configs;
3079my %processed_configs;
3080my %nochange_config;
3081
3082sub test_this_config {
3083 my ($config) = @_;
3084
3085 my $found;
3086
3087 # if we already processed this config, skip it
3088 if (defined($processed_configs{$config})) {
3089 return undef;
3090 }
3091 $processed_configs{$config} = 1;
3092
3093 # if this config failed during this round, skip it
3094 if (defined($nochange_config{$config})) {
3095 return undef;
3096 }
3097
3098 my $kconfig = chomp_config $config;
3099
3100 # Test dependencies first
3101 if (defined($depends{"$kconfig"})) {
3102 my @parents = get_depends $config;
3103 foreach my $parent (@parents) {
3104 # if the parent is in the min config, check it first
3105 next if (!defined($min_configs{$parent}));
3106 $found = test_this_config($parent);
3107 if (defined($found)) {
3108 return $found;
3109 }
3110 }
3111 }
3112
3113 # Remove this config from the list of configs
3114 # do a make oldnoconfig and then read the resulting
3115 # .config to make sure it is missing the config that
3116 # we had before
3117 my %configs = %min_configs;
3118 delete $configs{$config};
3119 make_new_config ((values %configs), (values %keep_configs));
3120 make_oldconfig;
3121 undef %configs;
3122 assign_configs \%configs, $output_config;
3123
3124 return $config if (!defined($configs{$config}));
3125
3126 doprint "disabling config $config did not change .config\n";
3127
3128 $nochange_config{$config} = 1;
3129
3130 return undef;
3131}
3132
3133sub make_min_config {
3134 my ($i) = @_;
3135
3136 my $type = $minconfig_type;
3137 if ($type ne "boot" && $type ne "test") {
3138 fail "Invalid MIN_CONFIG_TYPE '$minconfig_type'\n" .
3139 " make_min_config works only with 'boot' and 'test'\n" and return;
3140 }
3141
3142 if (!defined($output_minconfig)) {
3143 fail "OUTPUT_MIN_CONFIG not defined" and return;
3144 }
3145
3146 # If output_minconfig exists, and the start_minconfig
3147 # came from min_config, than ask if we should use
3148 # that instead.
3149 if (-f $output_minconfig && !$start_minconfig_defined) {
3150 print "$output_minconfig exists\n";
3151 if (!defined($use_output_minconfig)) {
3152 if (read_yn " Use it as minconfig?") {
3153 $start_minconfig = $output_minconfig;
3154 }
3155 } elsif ($use_output_minconfig > 0) {
3156 doprint "Using $output_minconfig as MIN_CONFIG\n";
3157 $start_minconfig = $output_minconfig;
3158 } else {
3159 doprint "Set to still use MIN_CONFIG as starting point\n";
3160 }
3161 }
3162
3163 if (!defined($start_minconfig)) {
3164 fail "START_MIN_CONFIG or MIN_CONFIG not defined" and return;
3165 }
3166
3167 my $temp_config = "$tmpdir/temp_config";
3168
3169 # First things first. We build an allnoconfig to find
3170 # out what the defaults are that we can't touch.
3171 # Some are selections, but we really can't handle selections.
3172
3173 my $save_minconfig = $minconfig;
3174 undef $minconfig;
3175
3176 run_command "$make allnoconfig" or return 0;
3177
3178 read_depends;
3179
3180 process_config_ignore $output_config;
3181
3182 undef %save_configs;
3183 undef %min_configs;
3184
3185 if (defined($ignore_config)) {
3186 # make sure the file exists
3187 `touch $ignore_config`;
3188 assign_configs \%save_configs, $ignore_config;
3189 }
3190
3191 %keep_configs = %save_configs;
3192
3193 doprint "Load initial configs from $start_minconfig\n";
3194
3195 # Look at the current min configs, and save off all the
3196 # ones that were set via the allnoconfig
3197 assign_configs \%min_configs, $start_minconfig;
3198
3199 my @config_keys = keys %min_configs;
3200
3201 # All configs need a depcount
3202 foreach my $config (@config_keys) {
3203 my $kconfig = chomp_config $config;
3204 if (!defined $depcount{$kconfig}) {
3205 $depcount{$kconfig} = 0;
3206 }
3207 }
3208
3209 # Remove anything that was set by the make allnoconfig
3210 # we shouldn't need them as they get set for us anyway.
3211 foreach my $config (@config_keys) {
3212 # Remove anything in the ignore_config
3213 if (defined($keep_configs{$config})) {
3214 my $file = $ignore_config;
3215 $file =~ s,.*/(.*?)$,$1,;
3216 doprint "$config set by $file ... ignored\n";
3217 delete $min_configs{$config};
3218 next;
3219 }
3220 # But make sure the settings are the same. If a min config
3221 # sets a selection, we do not want to get rid of it if
3222 # it is not the same as what we have. Just move it into
3223 # the keep configs.
3224 if (defined($config_ignore{$config})) {
3225 if ($config_ignore{$config} ne $min_configs{$config}) {
3226 doprint "$config is in allnoconfig as '$config_ignore{$config}'";
3227 doprint " but it is '$min_configs{$config}' in minconfig .. keeping\n";
3228 $keep_configs{$config} = $min_configs{$config};
3229 } else {
3230 doprint "$config set by allnoconfig ... ignored\n";
3231 }
3232 delete $min_configs{$config};
3233 }
3234 }
3235
3236 my $done = 0;
3237 my $take_two = 0;
3238
3239 while (!$done) {
3240
3241 my $config;
3242 my $found;
3243
3244 # Now disable each config one by one and do a make oldconfig
3245 # till we find a config that changes our list.
3246
3247 my @test_configs = keys %min_configs;
3248
3249 # Sort keys by who is most dependent on
3250 @test_configs = sort { $depcount{chomp_config($b)} <=> $depcount{chomp_config($a)} }
3251 @test_configs ;
3252
3253 # Put configs that did not modify the config at the end.
3254 my $reset = 1;
3255 for (my $i = 0; $i < $#test_configs; $i++) {
3256 if (!defined($nochange_config{$test_configs[0]})) {
3257 $reset = 0;
3258 last;
3259 }
3260 # This config didn't change the .config last time.
3261 # Place it at the end
3262 my $config = shift @test_configs;
3263 push @test_configs, $config;
3264 }
3265
3266 # if every test config has failed to modify the .config file
3267 # in the past, then reset and start over.
3268 if ($reset) {
3269 undef %nochange_config;
3270 }
3271
3272 undef %processed_configs;
3273
3274 foreach my $config (@test_configs) {
3275
3276 $found = test_this_config $config;
3277
3278 last if (defined($found));
3279
3280 # oh well, try another config
3281 }
3282
3283 if (!defined($found)) {
3284 # we could have failed due to the nochange_config hash
3285 # reset and try again
3286 if (!$take_two) {
3287 undef %nochange_config;
3288 $take_two = 1;
3289 next;
3290 }
3291 doprint "No more configs found that we can disable\n";
3292 $done = 1;
3293 last;
3294 }
3295 $take_two = 0;
3296
3297 $config = $found;
3298
3299 doprint "Test with $config disabled\n";
3300
3301 # set in_bisect to keep build and monitor from dieing
3302 $in_bisect = 1;
3303
3304 my $failed = 0;
3305 build "oldconfig" or $failed = 1;
3306 if (!$failed) {
3307 start_monitor_and_boot or $failed = 1;
3308
3309 if ($type eq "test" && !$failed) {
3310 do_run_test or $failed = 1;
3311 }
3312
3313 end_monitor;
3314 }
3315
3316 $in_bisect = 0;
3317
3318 if ($failed) {
3319 doprint "$min_configs{$config} is needed to boot the box... keeping\n";
3320 # this config is needed, add it to the ignore list.
3321 $keep_configs{$config} = $min_configs{$config};
3322 $save_configs{$config} = $min_configs{$config};
3323 delete $min_configs{$config};
3324
3325 # update new ignore configs
3326 if (defined($ignore_config)) {
3327 open (OUT, ">$temp_config")
3328 or die "Can't write to $temp_config";
3329 foreach my $config (keys %save_configs) {
3330 print OUT "$save_configs{$config}\n";
3331 }
3332 close OUT;
3333 run_command "mv $temp_config $ignore_config" or
3334 dodie "failed to copy update to $ignore_config";
3335 }
3336
3337 } else {
3338 # We booted without this config, remove it from the minconfigs.
3339 doprint "$config is not needed, disabling\n";
3340
3341 delete $min_configs{$config};
3342
3343 # Also disable anything that is not enabled in this config
3344 my %configs;
3345 assign_configs \%configs, $output_config;
3346 my @config_keys = keys %min_configs;
3347 foreach my $config (@config_keys) {
3348 if (!defined($configs{$config})) {
3349 doprint "$config is not set, disabling\n";
3350 delete $min_configs{$config};
3351 }
3352 }
3353
3354 # Save off all the current mandidory configs
3355 open (OUT, ">$temp_config")
3356 or die "Can't write to $temp_config";
3357 foreach my $config (keys %keep_configs) {
3358 print OUT "$keep_configs{$config}\n";
3359 }
3360 foreach my $config (keys %min_configs) {
3361 print OUT "$min_configs{$config}\n";
3362 }
3363 close OUT;
3364
3365 run_command "mv $temp_config $output_minconfig" or
3366 dodie "failed to copy update to $output_minconfig";
3367 }
3368
3369 doprint "Reboot and wait $sleep_time seconds\n";
3370 reboot_to_good $sleep_time;
3371 }
3372
3373 success $i;
3374 return 1;
3375}
3376
3377$#ARGV < 1 or die "ktest.pl version: $VERSION\n usage: ktest.pl config-file\n";
3378
3379if ($#ARGV == 0) {
3380 $ktest_config = $ARGV[0];
3381 if (! -f $ktest_config) {
3382 print "$ktest_config does not exist.\n";
3383 if (!read_yn "Create it?") {
3384 exit 0;
3385 }
3386 }
3387} else {
3388 $ktest_config = "ktest.conf";
3389}
3390
3391if (! -f $ktest_config) {
3392 $newconfig = 1;
3393 get_test_case;
3394 open(OUT, ">$ktest_config") or die "Can not create $ktest_config";
3395 print OUT << "EOF"
3396# Generated by ktest.pl
3397#
3398
3399# PWD is a ktest.pl variable that will result in the process working
3400# directory that ktest.pl is executed in.
3401
3402# THIS_DIR is automatically assigned the PWD of the path that generated
3403# the config file. It is best to use this variable when assigning other
3404# directory paths within this directory. This allows you to easily
3405# move the test cases to other locations or to other machines.
3406#
3407THIS_DIR := $variable{"PWD"}
3408
3409# Define each test with TEST_START
3410# The config options below it will override the defaults
3411TEST_START
3412TEST_TYPE = $default{"TEST_TYPE"}
3413
3414DEFAULTS
3415EOF
3416;
3417 close(OUT);
3418}
3419read_config $ktest_config;
3420
3421if (defined($opt{"LOG_FILE"})) {
3422 $opt{"LOG_FILE"} = eval_option($opt{"LOG_FILE"}, -1);
3423}
3424
3425# Append any configs entered in manually to the config file.
3426my @new_configs = keys %entered_configs;
3427if ($#new_configs >= 0) {
3428 print "\nAppending entered in configs to $ktest_config\n";
3429 open(OUT, ">>$ktest_config") or die "Can not append to $ktest_config";
3430 foreach my $config (@new_configs) {
3431 print OUT "$config = $entered_configs{$config}\n";
3432 $opt{$config} = process_variables($entered_configs{$config});
3433 }
3434}
3435
3436if ($opt{"CLEAR_LOG"} && defined($opt{"LOG_FILE"})) {
3437 unlink $opt{"LOG_FILE"};
3438}
3439
3440doprint "\n\nSTARTING AUTOMATED TESTS\n\n";
3441
3442for (my $i = 0, my $repeat = 1; $i <= $opt{"NUM_TESTS"}; $i += $repeat) {
3443
3444 if (!$i) {
3445 doprint "DEFAULT OPTIONS:\n";
3446 } else {
3447 doprint "\nTEST $i OPTIONS";
3448 if (defined($repeat_tests{$i})) {
3449 $repeat = $repeat_tests{$i};
3450 doprint " ITERATE $repeat";
3451 }
3452 doprint "\n";
3453 }
3454
3455 foreach my $option (sort keys %opt) {
3456
3457 if ($option =~ /\[(\d+)\]$/) {
3458 next if ($i != $1);
3459 } else {
3460 next if ($i);
3461 }
3462
3463 doprint "$option = $opt{$option}\n";
3464 }
3465}
3466
3467sub __set_test_option {
3468 my ($name, $i) = @_;
3469
3470 my $option = "$name\[$i\]";
3471
3472 if (defined($opt{$option})) {
3473 return $opt{$option};
3474 }
3475
3476 foreach my $test (keys %repeat_tests) {
3477 if ($i >= $test &&
3478 $i < $test + $repeat_tests{$test}) {
3479 $option = "$name\[$test\]";
3480 if (defined($opt{$option})) {
3481 return $opt{$option};
3482 }
3483 }
3484 }
3485
3486 if (defined($opt{$name})) {
3487 return $opt{$name};
3488 }
3489
3490 return undef;
3491}
3492
3493sub set_test_option {
3494 my ($name, $i) = @_;
3495
3496 my $option = __set_test_option($name, $i);
3497 return $option if (!defined($option));
3498
3499 return eval_option($option, $i);
3500}
3501
3502# First we need to do is the builds
3503for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) {
3504
3505 # Do not reboot on failing test options
3506 $no_reboot = 1;
3507 $reboot_success = 0;
3508
3509 $have_version = 0;
3510
3511 $iteration = $i;
3512
3513 my $makecmd = set_test_option("MAKE_CMD", $i);
3514
3515 # Load all the options into their mapped variable names
3516 foreach my $opt (keys %option_map) {
3517 ${$option_map{$opt}} = set_test_option($opt, $i);
3518 }
3519
3520 $start_minconfig_defined = 1;
3521
3522 if (!defined($start_minconfig)) {
3523 $start_minconfig_defined = 0;
3524 $start_minconfig = $minconfig;
3525 }
3526
3527 chdir $builddir || die "can't change directory to $builddir";
3528
3529 foreach my $dir ($tmpdir, $outputdir) {
3530 if (!-d $dir) {
3531 mkpath($dir) or
3532 die "can't create $dir";
3533 }
3534 }
3535
3536 $ENV{"SSH_USER"} = $ssh_user;
3537 $ENV{"MACHINE"} = $machine;
3538
3539 $buildlog = "$tmpdir/buildlog-$machine";
3540 $testlog = "$tmpdir/testlog-$machine";
3541 $dmesg = "$tmpdir/dmesg-$machine";
3542 $make = "$makecmd O=$outputdir";
3543 $output_config = "$outputdir/.config";
3544
3545 if (!$buildonly) {
3546 $target = "$ssh_user\@$machine";
3547 if ($reboot_type eq "grub") {
3548 dodie "GRUB_MENU not defined" if (!defined($grub_menu));
3549 }
3550 }
3551
3552 my $run_type = $build_type;
3553 if ($test_type eq "patchcheck") {
3554 $run_type = $patchcheck_type;
3555 } elsif ($test_type eq "bisect") {
3556 $run_type = $bisect_type;
3557 } elsif ($test_type eq "config_bisect") {
3558 $run_type = $config_bisect_type;
3559 }
3560
3561 if ($test_type eq "make_min_config") {
3562 $run_type = "";
3563 }
3564
3565 # mistake in config file?
3566 if (!defined($run_type)) {
3567 $run_type = "ERROR";
3568 }
3569
3570 my $installme = "";
3571 $installme = " no_install" if ($no_install);
3572
3573 doprint "\n\n";
3574 doprint "RUNNING TEST $i of $opt{NUM_TESTS} with option $test_type $run_type$installme\n\n";
3575
3576 unlink $dmesg;
3577 unlink $buildlog;
3578 unlink $testlog;
3579
3580 if (defined($addconfig)) {
3581 my $min = $minconfig;
3582 if (!defined($minconfig)) {
3583 $min = "";
3584 }
3585 run_command "cat $addconfig $min > $tmpdir/add_config" or
3586 dodie "Failed to create temp config";
3587 $minconfig = "$tmpdir/add_config";
3588 }
3589
3590 if (defined($checkout)) {
3591 run_command "git checkout $checkout" or
3592 die "failed to checkout $checkout";
3593 }
3594
3595 $no_reboot = 0;
3596
3597 # A test may opt to not reboot the box
3598 if ($reboot_on_success) {
3599 $reboot_success = 1;
3600 }
3601
3602 if ($test_type eq "bisect") {
3603 bisect $i;
3604 next;
3605 } elsif ($test_type eq "config_bisect") {
3606 config_bisect $i;
3607 next;
3608 } elsif ($test_type eq "patchcheck") {
3609 patchcheck $i;
3610 next;
3611 } elsif ($test_type eq "make_min_config") {
3612 make_min_config $i;
3613 next;
3614 }
3615
3616 if ($build_type ne "nobuild") {
3617 build $build_type or next;
3618 }
3619
3620 if ($test_type eq "install") {
3621 get_version;
3622 install;
3623 success $i;
3624 next;
3625 }
3626
3627 if ($test_type ne "build") {
3628 my $failed = 0;
3629 start_monitor_and_boot or $failed = 1;
3630
3631 if (!$failed && $test_type ne "boot" && defined($run_test)) {
3632 do_run_test or $failed = 1;
3633 }
3634 end_monitor;
3635 next if ($failed);
3636 }
3637
3638 success $i;
3639}
3640
3641if ($opt{"POWEROFF_ON_SUCCESS"}) {
3642 halt;
3643} elsif ($opt{"REBOOT_ON_SUCCESS"} && !do_not_reboot && $reboot_success) {
3644 reboot_to_good;
3645} elsif (defined($switch_to_good)) {
3646 # still need to get to the good kernel
3647 run_command $switch_to_good;
3648}
3649
3650
3651doprint "\n $successes of $opt{NUM_TESTS} tests were successful\n\n";
3652
3653exit 0;