tests/lib/libc/gen/isqemu.h

   1 /*      $NetBSD: isqemu.h,v 1.3 2013/04/14 12:46:29 martin Exp $        */
   2
   3 /*-
   4  * Copyright (c) 2013 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Christos Zoulas.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. Neither the name of The NetBSD Foundation nor the names of its
  19  *    contributors may be used to endorse or promote products derived
  20  *    from this software without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  23  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  24  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  25  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  26  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  32  * POSSIBILITY OF SUCH DAMAGE.
  33  */
  34 #include <sys/param.h>
  35 #include <sys/sysctl.h>
  36 #include <stdbool.h>
  37 #include <string.h>
  38 #include <errno.h>
  39 #include <err.h>
  40
  41 static __inline bool
  42 isQEMU(void) {
  43 #if defined(__i386__) || defined(__x86_64__)
  44         char name[1024];
  45         size_t len = sizeof(name);
  46
  47         if (sysctlbyname("machdep.cpu_brand", name, &len, NULL, 0) == -1) {
  48                 if (errno == ENOENT)
  49                         return false;
  50                 err(EXIT_FAILURE, "sysctl");
  51         }
  52         return strstr(name, "QEMU") != NULL;
  53 #else
  54         return false;
  55 #endif
  56 }
  57
  58 #ifdef TEST
  59 int
  60 main(void) {
  61         return isQEMU();
  62 }
  63 #endif