876a7cf40c
Things like Makefile.inc1 resort to parsing /usr/include/osreldate.h with awk because this isn't easily available by other means. The separation of user and kernel versions is important for jail/chroot environments.
286 lines
6.5 KiB
C
286 lines
6.5 KiB
C
/*-
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* Copyright (c) 2002 Juli Mallett.
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* Copyright (c) 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif
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#ifndef lint
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static const char sccsid[] = "@(#)uname.c 8.2 (Berkeley) 5/4/95";
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#endif
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#include <sys/param.h>
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#include <sys/sysctl.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <osreldate.h>
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#define MFLAG 0x01
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#define NFLAG 0x02
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#define PFLAG 0x04
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#define RFLAG 0x08
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#define SFLAG 0x10
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#define VFLAG 0x20
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#define IFLAG 0x40
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#define UFLAG 0x80
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#define KFLAG 0x100
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typedef void (*get_t)(void);
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static get_t get_ident, get_platform, get_hostname, get_arch,
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get_release, get_sysname, get_kernvers, get_uservers, get_version;
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static void native_ident(void);
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static void native_platform(void);
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static void native_hostname(void);
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static void native_arch(void);
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static void native_release(void);
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static void native_sysname(void);
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static void native_version(void);
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static void native_kernvers(void);
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static void native_uservers(void);
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static void print_uname(u_int);
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static void setup_get(void);
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static void usage(void);
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static char *ident, *platform, *hostname, *arch, *release, *sysname, *version, *kernvers, *uservers;
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static int space;
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int
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main(int argc, char *argv[])
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{
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u_int flags;
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int ch;
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setup_get();
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flags = 0;
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while ((ch = getopt(argc, argv, "aiKmnoprsUv")) != -1)
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switch(ch) {
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case 'a':
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flags |= (MFLAG | NFLAG | RFLAG | SFLAG | VFLAG);
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break;
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case 'i':
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flags |= IFLAG;
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break;
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case 'K':
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flags |= KFLAG;
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break;
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case 'm':
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flags |= MFLAG;
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break;
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case 'n':
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flags |= NFLAG;
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break;
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case 'p':
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flags |= PFLAG;
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break;
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case 'r':
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flags |= RFLAG;
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break;
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case 's':
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case 'o':
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flags |= SFLAG;
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break;
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case 'U':
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flags |= UFLAG;
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break;
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case 'v':
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flags |= VFLAG;
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break;
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case '?':
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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if (argc)
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usage();
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if (!flags)
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flags |= SFLAG;
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print_uname(flags);
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exit(0);
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}
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#define CHECK_ENV(opt,var) \
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do { \
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if ((var = getenv("UNAME_" opt)) == NULL) { \
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get_##var = native_##var; \
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} else { \
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get_##var = (get_t)NULL; \
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} \
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} while (0)
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static void
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setup_get(void)
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{
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CHECK_ENV("s", sysname);
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CHECK_ENV("n", hostname);
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CHECK_ENV("r", release);
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CHECK_ENV("v", version);
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CHECK_ENV("m", platform);
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CHECK_ENV("p", arch);
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CHECK_ENV("i", ident);
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CHECK_ENV("K", kernvers);
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CHECK_ENV("U", uservers);
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}
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#define PRINT_FLAG(flags,flag,var) \
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if ((flags & flag) == flag) { \
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if (space) \
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printf(" "); \
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else \
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space++; \
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if (get_##var != NULL) \
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(*get_##var)(); \
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printf("%s", var); \
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}
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static void
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print_uname(u_int flags)
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{
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PRINT_FLAG(flags, SFLAG, sysname);
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PRINT_FLAG(flags, NFLAG, hostname);
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PRINT_FLAG(flags, RFLAG, release);
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PRINT_FLAG(flags, VFLAG, version);
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PRINT_FLAG(flags, MFLAG, platform);
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PRINT_FLAG(flags, PFLAG, arch);
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PRINT_FLAG(flags, IFLAG, ident);
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PRINT_FLAG(flags, KFLAG, kernvers);
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PRINT_FLAG(flags, UFLAG, uservers);
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printf("\n");
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}
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#define NATIVE_SYSCTL2_GET(var,mib0,mib1) \
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static void \
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native_##var(void) \
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{ \
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int mib[] = { (mib0), (mib1) }; \
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size_t len; \
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static char buf[1024]; \
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char **varp = &(var); \
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\
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len = sizeof buf; \
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if (sysctl(mib, sizeof mib / sizeof mib[0], \
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&buf, &len, NULL, 0) == -1) \
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err(1, "sysctl");
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#define NATIVE_SYSCTLNAME_GET(var,name) \
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static void \
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native_##var(void) \
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{ \
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size_t len; \
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static char buf[1024]; \
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char **varp = &(var); \
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\
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len = sizeof buf; \
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if (sysctlbyname(name, &buf, &len, NULL,\
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0) == -1) \
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err(1, "sysctlbyname");
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#define NATIVE_SET \
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*varp = buf; \
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return; \
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} struct __hack
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#define NATIVE_BUFFER (buf)
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#define NATIVE_LENGTH (len)
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NATIVE_SYSCTL2_GET(sysname, CTL_KERN, KERN_OSTYPE) {
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} NATIVE_SET;
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NATIVE_SYSCTL2_GET(hostname, CTL_KERN, KERN_HOSTNAME) {
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} NATIVE_SET;
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NATIVE_SYSCTL2_GET(release, CTL_KERN, KERN_OSRELEASE) {
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} NATIVE_SET;
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NATIVE_SYSCTL2_GET(version, CTL_KERN, KERN_VERSION) {
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size_t n;
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char *p;
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p = NATIVE_BUFFER;
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n = NATIVE_LENGTH;
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for (; n--; ++p)
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if (*p == '\n' || *p == '\t')
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*p = ' ';
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} NATIVE_SET;
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NATIVE_SYSCTL2_GET(platform, CTL_HW, HW_MACHINE) {
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} NATIVE_SET;
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NATIVE_SYSCTL2_GET(arch, CTL_HW, HW_MACHINE_ARCH) {
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} NATIVE_SET;
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NATIVE_SYSCTLNAME_GET(ident, "kern.ident") {
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} NATIVE_SET;
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static void
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native_uservers(void)
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{
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static char buf[128];
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snprintf(buf, sizeof(buf), "%d", __FreeBSD_version);
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uservers = buf;
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}
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static void
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native_kernvers(void)
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{
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static char buf[128];
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snprintf(buf, sizeof(buf), "%d", getosreldate());
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kernvers = buf;
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}
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static void
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usage(void)
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{
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fprintf(stderr, "usage: uname [-aiKmnoprsUv]\n");
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exit(1);
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}
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