tests/lib/libc/sys/t_sigaction.c

   1 /* $NetBSD: t_sigaction.c,v 1.2 2012/11/07 16:51:16 pgoyette Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2010 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 CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 __COPYRIGHT("@(#) Copyright (c) 2010\
  31  The NetBSD Foundation, inc. All rights reserved.");
  32 __RCSID("$NetBSD: t_sigaction.c,v 1.2 2012/11/07 16:51:16 pgoyette Exp $");
  33
  34 #include <sys/wait.h>
  35
  36 #include <signal.h>
  37 #include <stdbool.h>
  38 #include <stdlib.h>
  39 #include <string.h>
  40 #include <unistd.h>
  41
  42 #include <atf-c.h>
  43 #include <atf-c/config.h>
  44
  45 #include "../../../h_macros.h"
  46
  47 static bool handler_called = false;
  48
  49 static void
  50 handler(int signo)
  51 {
  52     handler_called = true;
  53 }
  54
  55 static void
  56 sa_resethand_child(const int flags)
  57 {
  58     struct sigaction sa;
  59
  60     sa.sa_flags = flags;
  61     sa.sa_handler = &handler;
  62     sigemptyset(&sa.sa_mask);
  63
  64     sigaction(SIGUSR1, &sa, NULL);
  65     kill(getpid(), SIGUSR1);
  66     exit(handler_called ? EXIT_SUCCESS : EXIT_FAILURE);
  67 }
  68
  69 static void
  70 wait_and_check_child(const pid_t pid, const char *fail_message)
  71 {
  72         int status;
  73
  74         (void)waitpid(pid, &status, 0);
  75
  76         if (WIFEXITED(status))
  77                 ATF_CHECK_EQ(EXIT_SUCCESS, WEXITSTATUS(status));
  78         else
  79                 atf_tc_fail("%s; raw exit status was %d", fail_message, status);
  80 }
  81
  82 static void
  83 catch(int sig)
  84 {
  85         return;
  86 }
  87
  88 ATF_TC(sigaction_basic);
  89 ATF_TC_HEAD(sigaction_basic, tc)
  90 {
  91
  92         atf_tc_set_md_var(tc, "descr", "Checks for correct I&D cache"
  93             "synchronization after copying out the trampoline code.");
  94 }
  95
  96 ATF_TC_BODY(sigaction_basic, tc)
  97 {
  98         static struct sigaction sa;
  99
 100         sa.sa_handler = catch;
 101
 102         sigaction(SIGUSR1, &sa, 0);
 103         kill(getpid(), SIGUSR1);
 104         atf_tc_pass();
 105 }
 106
 107 ATF_TC(sigaction_noflags);
 108 ATF_TC_HEAD(sigaction_noflags, tc)
 109 {
 110         atf_tc_set_md_var(tc, "descr", "Checks programming a signal with "
 111             "sigaction(2) but without any flags");
 112 }
 113
 114 ATF_TC_BODY(sigaction_noflags, tc)
 115 {
 116         const pid_t pid = fork();
 117         if (pid == -1)
 118                 atf_tc_fail_errno("fork(2) failed");
 119         else if (pid == 0)
 120                 sa_resethand_child(0);
 121         else
 122                 wait_and_check_child(pid, "Child process did not exit cleanly;"
 123                     " it failed to process the signal");
 124 }
 125
 126 ATF_TC(sigaction_resethand);
 127 ATF_TC_HEAD(sigaction_resethand, tc)
 128 {
 129         atf_tc_set_md_var(tc, "descr", "Checks that SA_RESETHAND works");
 130 }
 131
 132 ATF_TC_BODY(sigaction_resethand, tc)
 133 {
 134         const pid_t pid = fork();
 135         if (pid == -1)
 136                 atf_tc_fail_errno("fork(2) failed");
 137         else if (pid == 0)
 138                 sa_resethand_child(SA_RESETHAND);
 139         else {
 140                 wait_and_check_child(pid, "Child process did not exit cleanly;"
 141                     " it either failed to process the signal or SA_RESETHAND"
 142                     " is broken");
 143         }
 144 }
 145
 146 ATF_TP_ADD_TCS(tp)
 147 {
 148
 149         ATF_TP_ADD_TC(tp, sigaction_basic);
 150         ATF_TP_ADD_TC(tp, sigaction_noflags);
 151         ATF_TP_ADD_TC(tp, sigaction_resethand);
 152
 153         return atf_no_error();
 154 }