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