tests/kernel/t_sysctl.c

   1 /* $NetBSD: t_sysctl.c,v 1.1 2014/08/09 07:04:03 gson Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2014 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) 2014\
  31  The NetBSD Foundation, inc. All rights reserved.");
  32 __RCSID("$NetBSD: t_sysctl.c,v 1.1 2014/08/09 07:04:03 gson Exp $");
  33
  34 #include <sys/sysctl.h>
  35 #include <errno.h>
  36 #include <memory.h>
  37
  38 #include <atf-c.h>
  39
  40 ATF_TC(bufsize);
  41 ATF_TC_HEAD(bufsize, tc)
  42 {
  43         atf_tc_set_md_var(tc, "descr",
  44                 "Test sysctl integer reads with different buffer sizes");
  45 }
  46 ATF_TC_BODY(bufsize, tc)
  47 {
  48         union {
  49                 int int_val;
  50                 unsigned char space[256];
  51         } buf;
  52         size_t len;
  53         for (len = 0; len < sizeof(buf); len++) {
  54                 size_t oldlen = len;
  55                 int r;
  56                 memset(&buf, 0xFF, sizeof(buf));
  57                 r = sysctlbyname("kern.job_control", &buf, &oldlen, 0, (size_t) 0);
  58                 if (len < sizeof(int)) {
  59                         ATF_REQUIRE_EQ(r, -1);
  60                         ATF_REQUIRE_EQ(errno, ENOMEM);
  61                 } else {
  62                         ATF_REQUIRE_EQ(r, 0);
  63                         ATF_REQUIRE_EQ(buf.int_val, 1);
  64                         ATF_REQUIRE_EQ(oldlen, sizeof(int));
  65                 }
  66         }
  67 }
  68
  69 ATF_TP_ADD_TCS(tp)
  70 {
  71         ATF_TP_ADD_TC(tp, bufsize);
  72
  73         return atf_no_error();
  74 }