1 /* $NetBSD: uname.c,v 1.12 2014/06/14 13:09:37 apb 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 1.12 2014/06/14 13:09:37 apb 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(struct utsname *name) 55 { 56 int mib[2]; 57 size_t len; 58 char *p; 59 60 _DIAGASSERT(name != NULL); 61 62 mib[0] = CTL_KERN; 63 mib[1] = KERN_OSTYPE; 64 len = sizeof(name->sysname); 65 if (sysctl(mib, 2, &name->sysname, &len, NULL, 0) == -1) 66 goto error; 67 68 mib[0] = CTL_KERN; 69 mib[1] = KERN_HOSTNAME; 70 len = sizeof(name->nodename); 71 if (sysctl(mib, 2, &name->nodename, &len, NULL, 0) == -1) 72 goto error; 73 74 mib[0] = CTL_KERN; 75 mib[1] = KERN_OSRELEASE; 76 len = sizeof(name->release); 77 if (sysctl(mib, 2, &name->release, &len, NULL, 0) == -1) 78 goto error; 79 80 mib[0] = CTL_KERN; 81 mib[1] = KERN_VERSION; 82 len = sizeof(name->version); 83 if (sysctl(mib, 2, &name->version, &len, NULL, 0) == -1) { 84 if (errno == ENOMEM) { 85 /* 86 * string is too long for {struct utsname}.version. 87 * Just use the truncated string. 88 * XXX: We could mark the truncation with "..." 89 */ 90 name->version[sizeof(name->version) - 1] = '\0'; 91 } 92 else goto error; 93 } 94 95 /* The version may have newlines in it, turn them into spaces. */ 96 for (p = name->version; len--; ++p) { 97 if (*p == '\n' || *p == '\t') { 98 if (len > 1) 99 *p = ' '; 100 else 101 *p = '\0'; 102 } 103 } 104 105 mib[0] = CTL_HW; 106 mib[1] = HW_MACHINE; 107 len = sizeof(name->machine); 108 if (sysctl(mib, 2, &name->machine, &len, NULL, 0) == -1) 109 goto error; 110 return (0); 111 112 error: 113 return (-1); 114 } 115