tests/rump/rumpkern/t_kern.c

   1 /*      $NetBSD: t_kern.c,v 1.3 2012/01/30 13:05:52 njoly Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2011 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
  17  * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
  18  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  19  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
  21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  23  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  25  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  26  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  27  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #include <sys/types.h>
  31 #include <sys/signal.h>
  32 #include <sys/wait.h>
  33
  34 #include <rump/rump.h>
  35
  36 #include <atf-c.h>
  37 #include <stdio.h>
  38 #include <stdlib.h>
  39 #include <unistd.h>
  40
  41 #include "../../h_macros.h"
  42 #include "../kernspace/kernspace.h"
  43
  44 #define LOCKFUN(_name_, _descr_,_needld_, _expect_)                     \
  45         ATF_TC(lockme_##_name_);                                        \
  46         ATF_TC_HEAD(lockme_##_name_, tc) {                              \
  47                 atf_tc_set_md_var(tc, "descr", _descr_);                \
  48         }                                                               \
  49         ATF_TC_BODY(lockme_##_name_, tc) {                              \
  50                 locktest(tc, LOCKME_##_name_, _needld_, _expect_);      \
  51         }
  52
  53 static void
  54 locktest(const atf_tc_t *tc, enum locktest lt, int needld, const char *expect)
  55 {
  56         extern const int rump_lockdebug;
  57         int pipetti[2];
  58         int status;
  59
  60         if (needld && !rump_lockdebug)
  61                 atf_tc_skip("test requires LOCKDEBUG kernel");
  62         RL(pipe(pipetti));
  63
  64         switch (fork()) {
  65         case 0:
  66                 RL(dup2(pipetti[1], STDOUT_FILENO));
  67                 RL(dup2(pipetti[1], STDOUT_FILENO));
  68                 rump_init();
  69                 rump_schedule();
  70                 rumptest_lockme(lt);
  71                 rump_unschedule();
  72                 break;
  73         default:
  74                 RL(wait(&status));
  75                 ATF_REQUIRE(WIFSIGNALED(status) && WTERMSIG(status) == SIGABRT);
  76                 if (rump_lockdebug) {
  77                         char buf[8192];
  78
  79                         ATF_REQUIRE(read(pipetti[0], buf, sizeof(buf)) > 0);
  80                         if (strncmp(buf, expect, strlen(expect)) != 0)
  81                                 atf_tc_fail("unexpected output");
  82                 }
  83                 break;
  84         case -1:
  85                 atf_tc_fail("fork");
  86         }
  87 }
  88
  89 LOCKFUN(DESTROYHELD, "destroy lock while held", 0,
  90     "mutex error: lockdebug_free: is locked or in use");
  91 LOCKFUN(DOUBLEFREE, "free lock twice", 0,
  92     "panic: lockdebug_lookup: uninitialized lock");
  93 LOCKFUN(DOUBLEINIT, "init lock twice", 1,
  94     "mutex error: lockdebug_alloc: already initialized");
  95 LOCKFUN(MEMFREE, "free memory active lock is in", 1,
  96     "mutex error: kmem_intr_free: allocation contains active lock");
  97 LOCKFUN(MTX, "locking-against-self mutex", 0,
  98     "mutex error: lockdebug_wantlock: locking against myself");
  99 LOCKFUN(RWDOUBLEX, "locking-against-self exclusive rwlock", 0,
 100     "rwlock error: lockdebug_wantlock: locking against myself");
 101 LOCKFUN(RWRX, "rw: first shared, then exclusive", 1,
 102     "rwlock error: lockdebug_wantlock: locking against myself");
 103 LOCKFUN(RWXR, "rw: first execusive, then shared", 0,
 104     "rwlock error: lockdebug_wantlock: locking against myself");
 105
 106 ATF_TP_ADD_TCS(tp)
 107 {
 108
 109         ATF_TP_ADD_TC(tp, lockme_MTX);
 110         ATF_TP_ADD_TC(tp, lockme_RWDOUBLEX);
 111         ATF_TP_ADD_TC(tp, lockme_RWRX);
 112         ATF_TP_ADD_TC(tp, lockme_RWXR);
 113         ATF_TP_ADD_TC(tp, lockme_DOUBLEINIT);
 114         ATF_TP_ADD_TC(tp, lockme_DOUBLEFREE);
 115         ATF_TP_ADD_TC(tp, lockme_DESTROYHELD);
 116         ATF_TP_ADD_TC(tp, lockme_MEMFREE);
 117
 118         return atf_no_error();
 119 }