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 37 #include <errno.h> 38 #include <stdlib.h> 39 #include <string.h> 40 #include <unistd.h> 41 42 int 43 uname(struct utsname *name) 44 { 45 int mib[2], rval; 46 size_t len; 47 char *p; 48 char buf[MAXVARSYM_DATA]; 49 int oerrno; 50 51 rval = 0; 52 53 if ((p = getenv("UNAME_s"))) { 54 strlcpy(name->sysname, p, sizeof(name->sysname)); 55 } else { 56 mib[0] = CTL_KERN; 57 mib[1] = KERN_OSTYPE; 58 len = sizeof(name->sysname); 59 oerrno = errno; 60 if (sysctl(mib, 2, &name->sysname, &len, NULL, 0) == -1) { 61 if(errno == ENOMEM) 62 errno = oerrno; 63 else 64 rval = -1; 65 } 66 name->sysname[sizeof(name->sysname) - 1] = '\0'; 67 } 68 69 mib[0] = CTL_KERN; 70 mib[1] = KERN_HOSTNAME; 71 len = sizeof(name->nodename); 72 oerrno = errno; 73 if (sysctl(mib, 2, &name->nodename, &len, NULL, 0) == -1) { 74 if(errno == ENOMEM) 75 errno = oerrno; 76 else 77 rval = -1; 78 } 79 name->nodename[sizeof(name->nodename) - 1] = '\0'; 80 81 if ((p = getenv("UNAME_r"))) { 82 strlcpy(name->release, p, sizeof(name->release)); 83 } else { 84 mib[0] = CTL_KERN; 85 mib[1] = KERN_OSRELEASE; 86 len = sizeof(name->release); 87 oerrno = errno; 88 if (sysctl(mib, 2, &name->release, &len, NULL, 0) == -1) { 89 if(errno == ENOMEM) 90 errno = oerrno; 91 else 92 rval = -1; 93 } 94 name->release[sizeof(name->release) - 1] = '\0'; 95 } 96 97 if ((p = getenv("UNAME_v"))) { 98 strlcpy(name->version, p, sizeof(name->version)); 99 } else { 100 /* The version may contain newlines, turn them into spaces. */ 101 mib[0] = CTL_KERN; 102 mib[1] = KERN_VERSION; 103 len = sizeof(name->version); 104 oerrno = errno; 105 if (sysctl(mib, 2, &name->version, &len, NULL, 0) == -1) { 106 if (errno == ENOMEM) 107 errno = oerrno; 108 else 109 rval = -1; 110 } 111 name->version[sizeof(name->version) - 1] = '\0'; 112 for (p = name->version; len--; ++p) { 113 if (*p == '\n' || *p == '\t') { 114 if (len > 1) 115 *p = ' '; 116 else 117 *p = '\0'; 118 } 119 } 120 } 121 122 if ((p = getenv("UNAME_m"))) { 123 strlcpy(name->machine, p, sizeof(name->machine)); 124 } else { 125 oerrno = errno; 126 mib[1] = HW_MACHINE; 127 mib[0] = CTL_HW; 128 len = sizeof(name->machine); 129 if (sysctl(mib, 2, &name->machine, &len, NULL, 0) == -1) { 130 if (errno == ENOMEM) { 131 errno = oerrno; 132 } else { 133 rval = -1; 134 } 135 } 136 name->machine[sizeof(name->machine) - 1] = '\0'; 137 } 138 return (rval); 139 } 140