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