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Annotation of src/lib/libc/gen/uname.c, Revision 1.12

1.12    ! apb         1: /*     $NetBSD: uname.c,v 1.11 2012/03/20 16:36:05 matt Exp $  */
1.2       cgd         2:
1.1       cgd         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.
1.9       agc        15:  * 3. Neither the name of the University nor the names of its contributors
1.1       cgd        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:
1.3       christos   32: #include <sys/cdefs.h>
1.1       cgd        33: #if defined(LIBC_SCCS) && !defined(lint)
1.2       cgd        34: #if 0
1.1       cgd        35: static char sccsid[] = "@(#)uname.c    8.1 (Berkeley) 1/4/94";
1.2       cgd        36: #else
1.12    ! apb        37: __RCSID("$NetBSD: uname.c,v 1.11 2012/03/20 16:36:05 matt Exp $");
1.2       cgd        38: #endif
1.1       cgd        39: #endif /* LIBC_SCCS and not lint */
                     40:
1.4       jtc        41: #include "namespace.h"
1.1       cgd        42: #include <sys/param.h>
                     43: #include <sys/sysctl.h>
                     44: #include <sys/utsname.h>
1.4       jtc        45:
1.6       lukem      46: #include <assert.h>
                     47: #include <errno.h>
                     48:
1.4       jtc        49: #ifdef __weak_alias
1.8       mycroft    50: __weak_alias(uname,_uname)
1.4       jtc        51: #endif
1.1       cgd        52:
                     53: int
1.11      matt       54: uname(struct utsname *name)
1.1       cgd        55: {
1.10      cbiere     56:        int mib[2];
1.1       cgd        57:        size_t len;
                     58:        char *p;
                     59:
1.6       lukem      60:        _DIAGASSERT(name != NULL);
1.1       cgd        61:
                     62:        mib[0] = CTL_KERN;
                     63:        mib[1] = KERN_OSTYPE;
                     64:        len = sizeof(name->sysname);
                     65:        if (sysctl(mib, 2, &name->sysname, &len, NULL, 0) == -1)
1.10      cbiere     66:                goto error;
1.1       cgd        67:
                     68:        mib[0] = CTL_KERN;
                     69:        mib[1] = KERN_HOSTNAME;
                     70:        len = sizeof(name->nodename);
                     71:        if (sysctl(mib, 2, &name->nodename, &len, NULL, 0) == -1)
1.10      cbiere     72:                goto error;
1.1       cgd        73:
                     74:        mib[0] = CTL_KERN;
                     75:        mib[1] = KERN_OSRELEASE;
                     76:        len = sizeof(name->release);
                     77:        if (sysctl(mib, 2, &name->release, &len, NULL, 0) == -1)
1.10      cbiere     78:                goto error;
1.1       cgd        79:
                     80:        mib[0] = CTL_KERN;
                     81:        mib[1] = KERN_VERSION;
                     82:        len = sizeof(name->version);
1.12    ! apb        83:        if (sysctl(mib, 2, &name->version, &len, NULL, 0) == -1) {
        !            84:                if (errno == ENOMEM) {
        !            85:                        /*
        !            86:                         * string is too long for {struct utsname}.version.
        !            87:                         * Just use the truncated string.
        !            88:                         * XXX: We could mark the truncation with "..."
        !            89:                         */
        !            90:                        name->version[sizeof(name->version) - 1] = '\0';
        !            91:                }
        !            92:                else goto error;
        !            93:        }
1.10      cbiere     94:
                     95:        /* The version may have newlines in it, turn them into spaces. */
                     96:        for (p = name->version; len--; ++p) {
                     97:                if (*p == '\n' || *p == '\t') {
                     98:                        if (len > 1)
                     99:                                *p = ' ';
                    100:                        else
                    101:                                *p = '\0';
1.5       thorpej   102:                }
1.10      cbiere    103:        }
1.1       cgd       104:
                    105:        mib[0] = CTL_HW;
                    106:        mib[1] = HW_MACHINE;
                    107:        len = sizeof(name->machine);
                    108:        if (sysctl(mib, 2, &name->machine, &len, NULL, 0) == -1)
1.10      cbiere    109:                goto error;
                    110:        return (0);
                    111:
                    112: error:
                    113:        return (-1);
1.1       cgd       114: }

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