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/*-
* Copyright (c) 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if defined(LIBC_SCCS) && !defined(lint)
/*static char sccsid[] = "From: @(#)uname.c 8.1 (Berkeley) 1/4/94";*/
#endif /* LIBC_SCCS and not lint */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/utsname.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
int
__xuname(int namesize, void *namebuf)
{
int mib[2], rval;
size_t len;
char *p, *q;
int oerrno;
rval = 0;
q = (char *)namebuf;
mib[0] = CTL_KERN;
if ((p = getenv("UNAME_s")))
strlcpy(q, p, namesize);
else {
mib[1] = KERN_OSTYPE;
len = namesize;
oerrno = errno;
if (sysctl(mib, 2, q, &len, NULL, 0) == -1) {
if (errno == ENOMEM)
errno = oerrno;
else
rval = -1;
}
q[namesize - 1] = '\0';
}
q += namesize;
mib[1] = KERN_HOSTNAME;
len = namesize;
oerrno = errno;
if (sysctl(mib, 2, q, &len, NULL, 0) == -1) {
if (errno == ENOMEM)
errno = oerrno;
else
rval = -1;
}
q[namesize - 1] = '\0';
q += namesize;
if ((p = getenv("UNAME_r")))
strlcpy(q, p, namesize);
else {
mib[1] = KERN_OSRELEASE;
len = namesize;
oerrno = errno;
if (sysctl(mib, 2, q, &len, NULL, 0) == -1) {
if (errno == ENOMEM)
errno = oerrno;
else
rval = -1;
}
q[namesize - 1] = '\0';
}
q += namesize;
if ((p = getenv("UNAME_v")))
strlcpy(q, p, namesize);
else {
/*
* The version may have newlines in it, turn them into
* spaces.
*/
mib[1] = KERN_VERSION;
len = namesize;
oerrno = errno;
if (sysctl(mib, 2, q, &len, NULL, 0) == -1) {
if (errno == ENOMEM)
errno = oerrno;
else
rval = -1;
}
q[namesize - 1] = '\0';
for (p = q; len--; ++p) {
if (*p == '\n' || *p == '\t') {
if (len > 1)
*p = ' ';
else
*p = '\0';
}
}
}
q += namesize;
if ((p = getenv("UNAME_m")))
strlcpy(q, p, namesize);
else {
mib[0] = CTL_HW;
mib[1] = HW_MACHINE;
len = namesize;
oerrno = errno;
if (sysctl(mib, 2, q, &len, NULL, 0) == -1) {
if (errno == ENOMEM)
errno = oerrno;
else
rval = -1;
}
q[namesize - 1] = '\0';
}
return (rval);
}
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