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/*-
* Copyright (c) 2002 Juli Mallett.
* Copyright (c) 1993
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif
#ifndef lint
static const char sccsid[] = "@(#)uname.c 8.2 (Berkeley) 5/4/95";
#endif
#include <sys/param.h>
#include <sys/sysctl.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#define MFLAG 0x01
#define NFLAG 0x02
#define PFLAG 0x04
#define RFLAG 0x08
#define SFLAG 0x10
#define VFLAG 0x20
#define IFLAG 0x40
typedef void (*get_t)(void);
static get_t get_ident, get_platform, get_hostname, get_arch,
get_release, get_sysname, get_version;
static void native_ident(void);
static void native_platform(void);
static void native_hostname(void);
static void native_arch(void);
static void native_release(void);
static void native_sysname(void);
static void native_version(void);
static void print_uname(u_int);
static void setup_get(void);
static void usage(void);
static char *ident, *platform, *hostname, *arch, *release, *sysname, *version;
static int space;
int
main(int argc, char *argv[])
{
u_int flags;
int ch;
setup_get();
flags = 0;
while ((ch = getopt(argc, argv, "aimnoprsv")) != -1)
switch(ch) {
case 'a':
flags |= (MFLAG | NFLAG | RFLAG | SFLAG | VFLAG);
break;
case 'i':
flags |= IFLAG;
break;
case 'm':
flags |= MFLAG;
break;
case 'n':
flags |= NFLAG;
break;
case 'p':
flags |= PFLAG;
break;
case 'r':
flags |= RFLAG;
break;
case 's':
case 'o':
flags |= SFLAG;
break;
case 'v':
flags |= VFLAG;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (argc)
usage();
if (!flags)
flags |= SFLAG;
print_uname(flags);
exit(0);
}
#define CHECK_ENV(opt,var) \
do { \
if ((var = getenv("UNAME_" opt)) == NULL) { \
get_##var = native_##var; \
} else { \
get_##var = (get_t)NULL; \
} \
} while (0)
static void
setup_get(void)
{
CHECK_ENV("s", sysname);
CHECK_ENV("n", hostname);
CHECK_ENV("r", release);
CHECK_ENV("v", version);
CHECK_ENV("m", platform);
CHECK_ENV("p", arch);
CHECK_ENV("i", ident);
}
#define PRINT_FLAG(flags,flag,var) \
if ((flags & flag) == flag) { \
if (space) \
printf(" "); \
else \
space++; \
if (get_##var != NULL) \
(*get_##var)(); \
printf("%s", var); \
}
static void
print_uname(u_int flags)
{
PRINT_FLAG(flags, SFLAG, sysname);
PRINT_FLAG(flags, NFLAG, hostname);
PRINT_FLAG(flags, RFLAG, release);
PRINT_FLAG(flags, VFLAG, version);
PRINT_FLAG(flags, MFLAG, platform);
PRINT_FLAG(flags, PFLAG, arch);
PRINT_FLAG(flags, IFLAG, ident);
printf("\n");
}
#define NATIVE_SYSCTL2_GET(var,mib0,mib1) \
static void \
native_##var(void) \
{ \
int mib[] = { (mib0), (mib1) }; \
size_t len; \
static char buf[1024]; \
char **varp = &(var); \
\
len = sizeof buf; \
if (sysctl(mib, sizeof mib / sizeof mib[0], \
&buf, &len, NULL, 0) == -1) \
err(1, "sysctl");
#define NATIVE_SYSCTLNAME_GET(var,name) \
static void \
native_##var(void) \
{ \
size_t len; \
static char buf[1024]; \
char **varp = &(var); \
\
len = sizeof buf; \
if (sysctlbyname(name, &buf, &len, NULL,\
0) == -1) \
err(1, "sysctlbyname");
#define NATIVE_SET \
*varp = buf; \
return; \
} struct __hack
#define NATIVE_BUFFER (buf)
#define NATIVE_LENGTH (len)
NATIVE_SYSCTL2_GET(sysname, CTL_KERN, KERN_OSTYPE) {
} NATIVE_SET;
NATIVE_SYSCTL2_GET(hostname, CTL_KERN, KERN_HOSTNAME) {
} NATIVE_SET;
NATIVE_SYSCTL2_GET(release, CTL_KERN, KERN_OSRELEASE) {
} NATIVE_SET;
NATIVE_SYSCTL2_GET(version, CTL_KERN, KERN_VERSION) {
size_t n;
char *p;
p = NATIVE_BUFFER;
n = NATIVE_LENGTH;
for (; n--; ++p)
if (*p == '\n' || *p == '\t')
*p = ' ';
} NATIVE_SET;
NATIVE_SYSCTL2_GET(platform, CTL_HW, HW_MACHINE) {
} NATIVE_SET;
NATIVE_SYSCTL2_GET(arch, CTL_HW, HW_MACHINE_ARCH) {
} NATIVE_SET;
NATIVE_SYSCTLNAME_GET(ident, "kern.ident") {
} NATIVE_SET;
static void
usage(void)
{
fprintf(stderr, "usage: uname [-aimnoprsv]\n");
exit(1);
}
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