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 */ 32 33 #include <sys/param.h> 34 #include <sys/sysctl.h> 35 #include <sys/utsname.h> 36 #include <stdlib.h> 37 #include <string.h> 38 #include <errno.h> 39 40 int 41 uname(struct utsname *name) 42 { 43 int mib[2], rval; 44 size_t len; 45 char *p; 46 int oerrno; 47 48 rval = 0; 49 50 if ((p = getenv("UNAME_s"))) { 51 strlcpy(name->sysname, p, sizeof(name->sysname)); 52 } else { 53 mib[0] = CTL_KERN; 54 mib[1] = KERN_OSTYPE; 55 len = sizeof(name->sysname); 56 oerrno = errno; 57 if (sysctl(mib, 2, &name->sysname, &len, NULL, 0) == -1) { 58 if(errno == ENOMEM) 59 errno = oerrno; 60 else 61 rval = -1; 62 } 63 name->sysname[sizeof(name->sysname) - 1] = '\0'; 64 } 65 66 mib[0] = CTL_KERN; 67 mib[1] = KERN_HOSTNAME; 68 len = sizeof(name->nodename); 69 oerrno = errno; 70 if (sysctl(mib, 2, &name->nodename, &len, NULL, 0) == -1) { 71 if(errno == ENOMEM) 72 errno = oerrno; 73 else 74 rval = -1; 75 } 76 name->nodename[sizeof(name->nodename) - 1] = '\0'; 77 78 if ((p = getenv("UNAME_r"))) { 79 strlcpy(name->release, p, sizeof(name->release)); 80 } else { 81 mib[0] = CTL_KERN; 82 mib[1] = KERN_OSRELEASE; 83 len = sizeof(name->release); 84 oerrno = errno; 85 if (sysctl(mib, 2, &name->release, &len, NULL, 0) == -1) { 86 if(errno == ENOMEM) 87 errno = oerrno; 88 else 89 rval = -1; 90 } 91 name->release[sizeof(name->release) - 1] = '\0'; 92 } 93 94 if ((p = getenv("UNAME_v"))) { 95 strlcpy(name->version, p, sizeof(name->version)); 96 } else { 97 /* The version may contain newlines, turn them into spaces. */ 98 mib[0] = CTL_KERN; 99 mib[1] = KERN_VERSION; 100 len = sizeof(name->version); 101 oerrno = errno; 102 if (sysctl(mib, 2, &name->version, &len, NULL, 0) == -1) { 103 if (errno == ENOMEM) 104 errno = oerrno; 105 else 106 rval = -1; 107 } 108 name->version[sizeof(name->version) - 1] = '\0'; 109 for (p = name->version; len--; ++p) { 110 if (*p == '\n' || *p == '\t') { 111 if (len > 1) 112 *p = ' '; 113 else 114 *p = '\0'; 115 } 116 } 117 } 118 119 if ((p = getenv("UNAME_m"))) { 120 strlcpy(name->machine, p, sizeof(name->machine)); 121 } 122 else { 123 oerrno = errno; 124 mib[1] = HW_MACHINE; 125 mib[0] = CTL_HW; 126 len = sizeof(name->machine); 127 if (sysctl(mib, 2, &name->machine, &len, NULL, 0) == -1) { 128 if (errno == ENOMEM) { 129 errno = oerrno; 130 } else { 131 rval = -1; 132 } 133 } 134 name->machine[sizeof(name->machine) - 1] = '\0'; 135 } 136 return (rval); 137 } 138