1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 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 #if defined(LIBC_SCCS) && !defined(lint) 33 /*static char sccsid[] = "From: @(#)uname.c 8.1 (Berkeley) 1/4/94";*/ 34 #endif /* LIBC_SCCS and not lint */ 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #include <sys/param.h> 39 #include <sys/sysctl.h> 40 #include <sys/utsname.h> 41 #include <errno.h> 42 #include <stdlib.h> 43 #include <string.h> 44 45 int 46 __xuname(int namesize, void *namebuf) 47 { 48 int mib[2], rval; 49 size_t len; 50 char *p, *q; 51 int oerrno; 52 53 rval = 0; 54 q = (char *)namebuf; 55 56 mib[0] = CTL_KERN; 57 58 if ((p = getenv("UNAME_s"))) 59 strlcpy(q, p, namesize); 60 else { 61 mib[1] = KERN_OSTYPE; 62 len = namesize; 63 oerrno = errno; 64 if (sysctl(mib, 2, q, &len, NULL, 0) == -1) { 65 if (errno == ENOMEM) 66 errno = oerrno; 67 else 68 rval = -1; 69 } 70 q[namesize - 1] = '\0'; 71 } 72 q += namesize; 73 74 mib[1] = KERN_HOSTNAME; 75 len = namesize; 76 oerrno = errno; 77 if (sysctl(mib, 2, q, &len, NULL, 0) == -1) { 78 if (errno == ENOMEM) 79 errno = oerrno; 80 else 81 rval = -1; 82 } 83 q[namesize - 1] = '\0'; 84 q += namesize; 85 86 if ((p = getenv("UNAME_r"))) 87 strlcpy(q, p, namesize); 88 else { 89 mib[1] = KERN_OSRELEASE; 90 len = namesize; 91 oerrno = errno; 92 if (sysctl(mib, 2, q, &len, NULL, 0) == -1) { 93 if (errno == ENOMEM) 94 errno = oerrno; 95 else 96 rval = -1; 97 } 98 q[namesize - 1] = '\0'; 99 } 100 q += namesize; 101 102 if ((p = getenv("UNAME_v"))) 103 strlcpy(q, p, namesize); 104 else { 105 106 /* 107 * The version may have newlines in it, turn them into 108 * spaces. 109 */ 110 mib[1] = KERN_VERSION; 111 len = namesize; 112 oerrno = errno; 113 if (sysctl(mib, 2, q, &len, NULL, 0) == -1) { 114 if (errno == ENOMEM) 115 errno = oerrno; 116 else 117 rval = -1; 118 } 119 q[namesize - 1] = '\0'; 120 for (p = q; len--; ++p) { 121 if (*p == '\n' || *p == '\t') { 122 if (len > 1) 123 *p = ' '; 124 else 125 *p = '\0'; 126 } 127 } 128 } 129 q += namesize; 130 131 if ((p = getenv("UNAME_m"))) 132 strlcpy(q, p, namesize); 133 else { 134 mib[0] = CTL_HW; 135 mib[1] = HW_MACHINE; 136 len = namesize; 137 oerrno = errno; 138 if (sysctl(mib, 2, q, &len, NULL, 0) == -1) { 139 if (errno == ENOMEM) 140 errno = oerrno; 141 else 142 rval = -1; 143 } 144 q[namesize - 1] = '\0'; 145 } 146 147 return (rval); 148 } 149