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uname.c revision 1.6 
      1 /*	$NetBSD: uname.c,v 1.6 1999/09/16 11:45:06 lukem 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. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #if defined(LIBC_SCCS) && !defined(lint)
     38 #if 0
     39 static char sccsid[] = "@(#)uname.c	8.1 (Berkeley) 1/4/94";
     40 #else
     41 __RCSID("$NetBSD: uname.c,v 1.6 1999/09/16 11:45:06 lukem Exp $");
     42 #endif
     43 #endif /* LIBC_SCCS and not lint */
     44 
     45 #include "namespace.h"
     46 #include <sys/param.h>
     47 #include <sys/sysctl.h>
     48 #include <sys/utsname.h>
     49 
     50 #include <assert.h>
     51 #include <errno.h>
     52 
     53 #ifdef __weak_alias
     54 __weak_alias(uname,_uname);
     55 #endif
     56 
     57 int
     58 uname(name)
     59 	struct utsname *name;
     60 {
     61 	int mib[2], rval;
     62 	size_t len;
     63 	char *p;
     64 
     65 	rval = 0;
     66 
     67 	_DIAGASSERT(name != NULL);
     68 #ifdef _DIAGNOSTIC
     69 	if (name == NULL) {
     70 		errno = EFAULT;
     71 		return (-1);
     72 	}
     73 #endif
     74 
     75 	mib[0] = CTL_KERN;
     76 	mib[1] = KERN_OSTYPE;
     77 	len = sizeof(name->sysname);
     78 	if (sysctl(mib, 2, &name->sysname, &len, NULL, 0) == -1)
     79 		rval = -1;
     80 
     81 	mib[0] = CTL_KERN;
     82 	mib[1] = KERN_HOSTNAME;
     83 	len = sizeof(name->nodename);
     84 	if (sysctl(mib, 2, &name->nodename, &len, NULL, 0) == -1)
     85 		rval = -1;
     86 
     87 	mib[0] = CTL_KERN;
     88 	mib[1] = KERN_OSRELEASE;
     89 	len = sizeof(name->release);
     90 	if (sysctl(mib, 2, &name->release, &len, NULL, 0) == -1)
     91 		rval = -1;
     92 
     93 	/* The version may have newlines in it, turn them into spaces. */
     94 	mib[0] = CTL_KERN;
     95 	mib[1] = KERN_VERSION;
     96 	len = sizeof(name->version);
     97 	if (sysctl(mib, 2, &name->version, &len, NULL, 0) == -1)
     98 		rval = -1;
     99 	else
    100 		for (p = name->version; len--; ++p) {
    101 			if (*p == '\n' || *p == '\t') {
    102 				if (len > 1)
    103 					*p = ' ';
    104 				else
    105 					*p = '\0';
    106 			}
    107 		}
    108 
    109 	mib[0] = CTL_HW;
    110 	mib[1] = HW_MACHINE;
    111 	len = sizeof(name->machine);
    112 	if (sysctl(mib, 2, &name->machine, &len, NULL, 0) == -1)
    113 		rval = -1;
    114 	return (rval);
    115 }
    116