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 30 #if defined(LIBC_SCCS) && !defined(lint) 31 /*static char sccsid[] = "From: @(#)uname.c 8.1 (Berkeley) 1/4/94";*/ 32 #endif /* LIBC_SCCS and not lint */ 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #include <sys/param.h> 37 #include <sys/sysctl.h> 38 #include <sys/utsname.h> 39 #include <errno.h> 40 #include <stdlib.h> 41 #include <string.h> 42 43 int 44 __xuname(int namesize, void *namebuf) 45 { 46 int mib[2], rval; 47 size_t len; 48 char *p, *q; 49 int oerrno; 50 51 rval = 0; 52 q = (char *)namebuf; 53 54 mib[0] = CTL_KERN; 55 56 if ((p = getenv("UNAME_s"))) 57 strlcpy(q, p, namesize); 58 else { 59 mib[1] = KERN_OSTYPE; 60 len = namesize; 61 oerrno = errno; 62 if (sysctl(mib, 2, q, &len, NULL, 0) == -1) { 63 if (errno == ENOMEM) 64 errno = oerrno; 65 else 66 rval = -1; 67 } 68 q[namesize - 1] = '\0'; 69 } 70 q += namesize; 71 72 mib[1] = KERN_HOSTNAME; 73 len = namesize; 74 oerrno = errno; 75 if (sysctl(mib, 2, q, &len, NULL, 0) == -1) { 76 if (errno == ENOMEM) 77 errno = oerrno; 78 else 79 rval = -1; 80 } 81 q[namesize - 1] = '\0'; 82 q += namesize; 83 84 if ((p = getenv("UNAME_r"))) 85 strlcpy(q, p, namesize); 86 else { 87 mib[1] = KERN_OSRELEASE; 88 len = namesize; 89 oerrno = errno; 90 if (sysctl(mib, 2, q, &len, NULL, 0) == -1) { 91 if (errno == ENOMEM) 92 errno = oerrno; 93 else 94 rval = -1; 95 } 96 q[namesize - 1] = '\0'; 97 } 98 q += namesize; 99 100 if ((p = getenv("UNAME_v"))) 101 strlcpy(q, p, namesize); 102 else { 103 104 /* 105 * The version may have newlines in it, turn them into 106 * spaces. 107 */ 108 mib[1] = KERN_VERSION; 109 len = namesize; 110 oerrno = errno; 111 if (sysctl(mib, 2, q, &len, NULL, 0) == -1) { 112 if (errno == ENOMEM) 113 errno = oerrno; 114 else 115 rval = -1; 116 } 117 q[namesize - 1] = '\0'; 118 for (p = q; len--; ++p) { 119 if (*p == '\n' || *p == '\t') { 120 if (len > 1) 121 *p = ' '; 122 else 123 *p = '\0'; 124 } 125 } 126 } 127 q += namesize; 128 129 if ((p = getenv("UNAME_m"))) 130 strlcpy(q, p, namesize); 131 else { 132 mib[0] = CTL_HW; 133 mib[1] = HW_MACHINE; 134 len = namesize; 135 oerrno = errno; 136 if (sysctl(mib, 2, q, &len, NULL, 0) == -1) { 137 if (errno == ENOMEM) 138 errno = oerrno; 139 else 140 rval = -1; 141 } 142 q[namesize - 1] = '\0'; 143 } 144 145 return (rval); 146 } 147