lib/libc/gen/uname.c

   1 /*      $NetBSD: uname.c,v 1.9 2003/08/07 16:42:59 agc Exp $    */
   2
   3 /*-
   4  * Copyright (c) 1994
   5  *      The Regents of the University of California.  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  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #if defined(LIBC_SCCS) && !defined(lint)
  34 #if 0
  35 static char sccsid[] = "@(#)uname.c     8.1 (Berkeley) 1/4/94";
  36 #else
  37 __RCSID("$NetBSD: uname.c,v 1.9 2003/08/07 16:42:59 agc Exp $");
  38 #endif
  39 #endif /* LIBC_SCCS and not lint */
  40
  41 #include "namespace.h"
  42 #include <sys/param.h>
  43 #include <sys/sysctl.h>
  44 #include <sys/utsname.h>
  45
  46 #include <assert.h>
  47 #include <errno.h>
  48
  49 #ifdef __weak_alias
  50 __weak_alias(uname,_uname)
  51 #endif
  52
  53 int
  54 uname(name)
  55         struct utsname *name;
  56 {
  57         int mib[2];
  58         size_t len;
  59         char *p;
  60
  61         _DIAGASSERT(name != NULL);
  62
  63         mib[0] = CTL_KERN;
  64         mib[1] = KERN_OSTYPE;
  65         len = sizeof(name->sysname);
  66         if (sysctl(mib, 2, &name->sysname, &len, NULL, 0) == -1)
  67                 goto error;
  68
  69         mib[0] = CTL_KERN;
  70         mib[1] = KERN_HOSTNAME;
  71         len = sizeof(name->nodename);
  72         if (sysctl(mib, 2, &name->nodename, &len, NULL, 0) == -1)
  73                 goto error;
  74
  75         mib[0] = CTL_KERN;
  76         mib[1] = KERN_OSRELEASE;
  77         len = sizeof(name->release);
  78         if (sysctl(mib, 2, &name->release, &len, NULL, 0) == -1)
  79                 goto error;
  80
  81         mib[0] = CTL_KERN;
  82         mib[1] = KERN_VERSION;
  83         len = sizeof(name->version);
  84         if (sysctl(mib, 2, &name->version, &len, NULL, 0) == -1)
  85                 goto error;
  86
  87         /* The version may have newlines in it, turn them into spaces. */
  88         for (p = name->version; len--; ++p) {
  89                 if (*p == '\n' || *p == '\t') {
  90                         if (len > 1)
  91                                 *p = ' ';
  92                         else
  93                                 *p = '\0';
  94                 }
  95         }
  96
  97         mib[0] = CTL_HW;
  98         mib[1] = HW_MACHINE;
  99         len = sizeof(name->machine);
 100         if (sysctl(mib, 2, &name->machine, &len, NULL, 0) == -1)
 101                 goto error;
 102         return (0);
 103
 104 error:
 105         return (-1);
 106 }