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 #include <sys/varsym.h> 37 38 #include <errno.h> 39 #include <stdlib.h> 40 #include <string.h> 41 #include <unistd.h> 42 43 int 44 uname(struct utsname *name) 45 { 46 int mib[2], rval; 47 size_t len; 48 char *p; 49 char buf[MAXVARSYM_DATA]; 50 int oerrno; 51 52 rval = 0; 53 54 if ((p = getenv("UNAME_s"))) { 55 strlcpy(name->sysname, p, sizeof(name->sysname)); 56 } else if (varsym_get(VARSYM_ALL_MASK, "UNAME_s", buf, sizeof(buf)) == 0) { 57 strlcpy(name->sysname, buf, sizeof(name->sysname)); 58 } else { 59 mib[0] = CTL_KERN; 60 mib[1] = KERN_OSTYPE; 61 len = sizeof(name->sysname); 62 oerrno = errno; 63 if (sysctl(mib, 2, &name->sysname, &len, NULL, 0) == -1) { 64 if(errno == ENOMEM) 65 errno = oerrno; 66 else 67 rval = -1; 68 } 69 name->sysname[sizeof(name->sysname) - 1] = '\0'; 70 } 71 72 mib[0] = CTL_KERN; 73 mib[1] = KERN_HOSTNAME; 74 len = sizeof(name->nodename); 75 oerrno = errno; 76 if (sysctl(mib, 2, &name->nodename, &len, NULL, 0) == -1) { 77 if(errno == ENOMEM) 78 errno = oerrno; 79 else 80 rval = -1; 81 } 82 name->nodename[sizeof(name->nodename) - 1] = '\0'; 83 84 if ((p = getenv("UNAME_r"))) { 85 strlcpy(name->release, p, sizeof(name->release)); 86 } else if (varsym_get(VARSYM_ALL_MASK, "UNAME_r", buf, sizeof(buf)) == 0) { 87 strlcpy(name->release, buf, sizeof(name->sysname)); 88 } else { 89 mib[0] = CTL_KERN; 90 mib[1] = KERN_OSRELEASE; 91 len = sizeof(name->release); 92 oerrno = errno; 93 if (sysctl(mib, 2, &name->release, &len, NULL, 0) == -1) { 94 if(errno == ENOMEM) 95 errno = oerrno; 96 else 97 rval = -1; 98 } 99 name->release[sizeof(name->release) - 1] = '\0'; 100 } 101 102 if ((p = getenv("UNAME_v"))) { 103 strlcpy(name->version, p, sizeof(name->version)); 104 } else if (varsym_get(VARSYM_ALL_MASK, "UNAME_v", buf, sizeof(buf)) == 0) { 105 strlcpy(name->version, buf, sizeof(name->sysname)); 106 } else { 107 /* The version may contain newlines, turn them into spaces. */ 108 mib[0] = CTL_KERN; 109 mib[1] = KERN_VERSION; 110 len = sizeof(name->version); 111 oerrno = errno; 112 if (sysctl(mib, 2, &name->version, &len, NULL, 0) == -1) { 113 if (errno == ENOMEM) 114 errno = oerrno; 115 else 116 rval = -1; 117 } 118 name->version[sizeof(name->version) - 1] = '\0'; 119 for (p = name->version; len--; ++p) { 120 if (*p == '\n' || *p == '\t') { 121 if (len > 1) 122 *p = ' '; 123 else 124 *p = '\0'; 125 } 126 } 127 } 128 129 if ((p = getenv("UNAME_m"))) { 130 strlcpy(name->machine, p, sizeof(name->machine)); 131 } else if (varsym_get(VARSYM_ALL_MASK, "UNAME_m", buf, sizeof(buf)) == 0) { 132 strlcpy(name->machine, buf, sizeof(name->sysname)); 133 } else { 134 oerrno = errno; 135 mib[1] = HW_MACHINE; 136 mib[0] = CTL_HW; 137 len = sizeof(name->machine); 138 if (sysctl(mib, 2, &name->machine, &len, NULL, 0) == -1) { 139 if (errno == ENOMEM) { 140 errno = oerrno; 141 } else { 142 rval = -1; 143 } 144 } 145 name->machine[sizeof(name->machine) - 1] = '\0'; 146 } 147 return (rval); 148 } 149