1 /*- 2 * Copyright (c) 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)uname.c 8.1 (Berkeley) 1/4/94 30 * $FreeBSD: src/lib/libc/gen/uname.c,v 1.7 1999/08/27 23:59:06 peter Exp $ 31 * $DragonFly: src/lib/libc/gen/uname.c,v 1.5 2007/01/19 07:23:40 dillon Exp $ 32 */ 33 34 #include <sys/param.h> 35 #include <sys/sysctl.h> 36 #include <sys/utsname.h> 37 #include <errno.h> 38 39 int 40 uname(struct utsname *name) 41 { 42 int mib[2], rval; 43 size_t len; 44 char *p; 45 int oerrno; 46 47 rval = 0; 48 49 mib[0] = CTL_KERN; 50 mib[1] = KERN_OSTYPE; 51 len = sizeof(name->sysname); 52 oerrno = errno; 53 if (sysctl(mib, 2, &name->sysname, &len, NULL, 0) == -1) { 54 if(errno == ENOMEM) 55 errno = oerrno; 56 else 57 rval = -1; 58 } 59 name->sysname[sizeof(name->sysname) - 1] = '\0'; 60 61 mib[0] = CTL_KERN; 62 mib[1] = KERN_HOSTNAME; 63 len = sizeof(name->nodename); 64 oerrno = errno; 65 if (sysctl(mib, 2, &name->nodename, &len, NULL, 0) == -1) { 66 if(errno == ENOMEM) 67 errno = oerrno; 68 else 69 rval = -1; 70 } 71 name->nodename[sizeof(name->nodename) - 1] = '\0'; 72 73 mib[0] = CTL_KERN; 74 mib[1] = KERN_OSRELEASE; 75 len = sizeof(name->release); 76 oerrno = errno; 77 if (sysctl(mib, 2, &name->release, &len, NULL, 0) == -1) { 78 if(errno == ENOMEM) 79 errno = oerrno; 80 else 81 rval = -1; 82 } 83 name->release[sizeof(name->release) - 1] = '\0'; 84 85 /* The version may have newlines in it, turn them into spaces. */ 86 mib[0] = CTL_KERN; 87 mib[1] = KERN_VERSION; 88 len = sizeof(name->version); 89 oerrno = errno; 90 if (sysctl(mib, 2, &name->version, &len, NULL, 0) == -1) { 91 if (errno == ENOMEM) 92 errno = oerrno; 93 else 94 rval = -1; 95 } 96 name->version[sizeof(name->version) - 1] = '\0'; 97 for (p = name->version; len--; ++p) { 98 if (*p == '\n' || *p == '\t') { 99 if (len > 1) 100 *p = ' '; 101 else 102 *p = '\0'; 103 } 104 } 105 106 oerrno = errno; 107 mib[1] = HW_MACHINE; 108 mib[0] = CTL_HW; 109 len = sizeof(name->machine); 110 if (sysctl(mib, 2, &name->machine, &len, NULL, 0) == -1) { 111 if (errno == ENOMEM) { 112 errno = oerrno; 113 } else { 114 rval = -1; 115 } 116 } 117 name->machine[sizeof(name->machine) - 1] = '\0'; 118 return (rval); 119 } 120