/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 *
 * Copyright (c) 2012 Nexenta Systems, Inc. All rights reserved.
 * Copyright (c) 1988, 2010, Oracle and/or its affiliates. All rights reserved.
 */

/*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*        All Rights Reserved   */

/*
 * University Copyright- Copyright (c) 1982, 1986, 1988
 * The Regents of the University of California
 * All Rights Reserved
 *
 * University Acknowledgment- Portions of this document are derived from
 * software developed by the University of California, Berkeley, and its
 * contributors.
 */

#define __EXTENSIONS__
#include <sys/types.h>
#include <stdio.h>
#include <stdio.h>
#include <string.h>
#include <locale.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/fcntl.h>
#include <sys/stat.h>
#include <sys/utsname.h>
#include <sys/systeminfo.h>

#define OS_NAME "illumos"

static void usage(void);

/* ARGSUSED */
int
main(int argc, char *argv[], char *envp[])
{
        char *nodename;
        char *optstring = "asnrpvmioS:X";
        int sflg = 0, nflg = 0, rflg = 0, vflg = 0, mflg = 0;
        int pflg = 0, iflg = 0, oflg = 0, Sflg = 0;
        int errflg = 0, optlet;
        int Xflg = 0;
        struct utsname  unstr, *un;
        char fmt_string[] = " %.*s";
        char *fs = &fmt_string[1];
        char procbuf[SYS_NMLN];

        (void) umask(~(S_IRWXU|S_IRGRP|S_IROTH) & S_IAMB);
        un = &unstr;
        (void) uname(un);

        (void) setlocale(LC_ALL, "");
#if !defined(TEXT_DOMAIN)
#define TEXT_DOMAIN "SYS_TEST"
#endif
        (void) textdomain(TEXT_DOMAIN);

        while ((optlet = getopt(argc, argv, optstring)) != EOF)
                switch (optlet) {
                case 'a':
                        sflg++; nflg++; rflg++; vflg++; mflg++;
                        pflg++;
                        iflg++;
                        break;
                case 's':
                        sflg++;
                        break;
                case 'n':
                        nflg++;
                        break;
                case 'r':
                        rflg++;
                        break;
                case 'v':
                        vflg++;
                        break;
                case 'm':
                        mflg++;
                        break;
                case 'p':
                        pflg++;
                        break;
                case 'i':
                        iflg++;
                        break;
                case 'o':
                        oflg++;
                        break;
                case 'S':
                        Sflg++;
                        nodename = optarg;
                        break;
                case 'X':
                        Xflg++;
                        break;

                case '?':
                        errflg++;
                }

        if (errflg || (optind != argc))
                usage();

        if ((Sflg > 1) ||
            (Sflg && (sflg || nflg || rflg || vflg || mflg || pflg || iflg ||
            oflg || Xflg))) {
                usage();
        }

        /* If we're changing the system name */
        if (Sflg) {
                int len = strlen(nodename);

                if (len > SYS_NMLN - 1) {
                        (void) fprintf(stderr, gettext(
                            "uname: name must be <= %d letters\n"),
                            SYS_NMLN-1);
                        exit(1);
                }
                if (sysinfo(SI_SET_HOSTNAME, nodename, len) < 0) {
                        int err = errno;
                        (void) fprintf(stderr, gettext(
                            "uname: error in setting name: %s\n"),
                            strerror(err));
                        exit(1);
                }
                return (0);
        }

        /*
         * "uname -s" is the default
         */
        if (!(sflg || nflg || rflg || vflg || mflg || pflg || iflg ||
            oflg || Xflg))
                sflg++;
        if (sflg) {
                (void) fprintf(stdout, fs, sizeof (un->sysname),
                    un->sysname);
                fs = fmt_string;
        }
        if (nflg) {
                (void) fprintf(stdout, fs, sizeof (un->nodename), un->nodename);
                fs = fmt_string;
        }
        if (rflg) {
                (void) fprintf(stdout, fs, sizeof (un->release), un->release);
                fs = fmt_string;
        }
        if (vflg) {
                (void) fprintf(stdout, fs, sizeof (un->version), un->version);
                fs = fmt_string;
        }
        if (mflg) {
                (void) fprintf(stdout, fs, sizeof (un->machine), un->machine);
                fs = fmt_string;
        }
        if (pflg) {
                if (sysinfo(SI_ARCHITECTURE, procbuf, sizeof (procbuf)) == -1) {
                        (void) fprintf(stderr, gettext(
                            "uname: sysinfo failed\n"));
                        exit(1);
                }
                (void) fprintf(stdout, fs, strlen(procbuf), procbuf);
                fs = fmt_string;
        }
        if (iflg) {
                if (sysinfo(SI_PLATFORM, procbuf, sizeof (procbuf)) == -1) {
                        (void) fprintf(stderr, gettext(
                            "uname: sysinfo failed\n"));
                        exit(1);
                }
                (void) fprintf(stdout, fs, strlen(procbuf), procbuf);
                fs = fmt_string;
        }
        if (oflg) {
                (void) fprintf(stdout, fs, strlen(OS_NAME), OS_NAME);
                fs = fmt_string;
        }
        if (Xflg) {
                int     val;

                (void) fprintf(stdout, "System = %.*s\n", sizeof (un->sysname),
                    un->sysname);
                (void) fprintf(stdout, "Node = %.*s\n", sizeof (un->nodename),
                    un->nodename);
                (void) fprintf(stdout, "Release = %.*s\n", sizeof (un->release),
                    un->release);
                (void) fprintf(stdout, "KernelID = %.*s\n",
                    sizeof (un->version), un->version);
                (void) fprintf(stdout, "Machine = %.*s\n", sizeof (un->machine),
                    un->machine);

                /* Not availible on Solaris so hardcode the output */
                (void) fprintf(stdout, "BusType = <unknown>\n");

                /* Serialization is not supported in 2.6, so hard code output */
                (void) fprintf(stdout, "Serial = <unknown>\n");
                (void) fprintf(stdout, "Users = <unknown>\n");
                (void) fprintf(stdout, "OEM# = 0\n");
                (void) fprintf(stdout, "Origin# = 1\n");

                val = sysconf(_SC_NPROCESSORS_CONF);
                (void) fprintf(stdout, "NumCPU = %d\n", val);
        }
        (void) putchar('\n');
        return (0);
}

static void
usage(void)
{
        {
                (void) fprintf(stderr, gettext(
                    "usage:     uname [-snrvmapioX]\n"
                    "   uname [-S system_name]\n"));
        }
        exit(1);
}