/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 1983, 1989, 1992, 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. 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.
 */



/*
 * Cursed vmstat -- from Robert Elz.
 */

#include <sys/param.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/proc.h>
#include <sys/uio.h>
#include <sys/namei.h>
#include <sys/resource.h>
#include <sys/sysctl.h>
#include <sys/vmmeter.h>

#include <vm/vm_param.h>

#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <langinfo.h>
#include <libutil.h>
#include <nlist.h>
#include <paths.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <utmpx.h>
#include "systat.h"
#include "extern.h"
#include "devs.h"

static struct Info {
        long    time[CPUSTATES];
        uint64_t v_swtch;       /* context switches */
        uint64_t v_trap;        /* calls to trap */
        uint64_t v_syscall;     /* calls to syscall() */
        uint64_t v_intr;        /* device interrupts */
        uint64_t v_soft;        /* software interrupts */
        /*
         * Virtual memory activity.
         */
        uint64_t v_vm_faults;   /* number of address memory faults */
        uint64_t v_io_faults;   /* page faults requiring I/O */
        uint64_t v_cow_faults;  /* number of copy-on-writes */
        uint64_t v_zfod;        /* pages zero filled on demand */
        uint64_t v_ozfod;       /* optimized zero fill pages */
        uint64_t v_swapin;      /* swap pager pageins */
        uint64_t v_swapout;     /* swap pager pageouts */
        uint64_t v_swappgsin;   /* swap pager pages paged in */
        uint64_t v_swappgsout;  /* swap pager pages paged out */
        uint64_t v_vnodein;     /* vnode pager pageins */
        uint64_t v_vnodeout;    /* vnode pager pageouts */
        uint64_t v_vnodepgsin;  /* vnode_pager pages paged in */
        uint64_t v_vnodepgsout; /* vnode pager pages paged out */
        uint64_t v_intrans;     /* intransit blocking page faults */
        uint64_t v_reactivated; /* number of pages reactivated by pagedaemon */
        uint64_t v_pdwakeups;   /* number of times daemon has awaken from sleep */
        uint64_t v_pdpages;     /* number of pages analyzed by daemon */

        uint64_t v_dfree;       /* pages freed by daemon */
        uint64_t v_pfree;       /* pages freed by exiting processes */
        uint64_t v_tfree;       /* total pages freed */
        /*
         * Distribution of page usages.
         */
        u_int v_free_count;     /* number of pages free */
        u_int v_wire_count;     /* number of pages wired down */
        u_int v_active_count;   /* number of pages active */
        u_int v_inactive_count; /* number of pages inactive */
        u_int v_laundry_count;  /* number of pages in laundry queue */
        u_long v_kmem_map_size; /* Current kmem allocation size */
        struct  vmtotal Total;
        struct  nchstats nchstats;
        long    nchcount;
        long    *intrcnt;
        long    bufspace;
        u_long  maxvnodes;
        long    numvnodes;
        long    freevnodes;
        int     numdirtybuffers;
} s, s1, s2, z;
static u_long kmem_size;
static u_int v_page_count;


#define total s.Total
#define nchtotal s.nchstats
#define oldnchtotal s1.nchstats

static  enum state { BOOT, TIME, RUN } state = TIME;
enum divisor { IEC = 0, SI = HN_DIVISOR_1000 };

static void allocinfo(struct Info *);
static void copyinfo(struct Info *, struct Info *);
static float cputime(int);
static void do_putuint64(uint64_t, int, int, int, int);
static void getinfo(struct Info *);
static int ucount(void);

static  int ncpu;
static  char buf[26];
static  time_t t;
static  double etime;
static  int nintr;
static  long *intrloc;
static  char **intrname;
static  int nextintsrow;

WINDOW *
openkre(void)
{

        return (stdscr);
}

void
closekre(WINDOW *w)
{

        if (w == NULL)
                return;
        wclear(w);
        wrefresh(w);
}

/*
 * These constants define where the major pieces are laid out
 */
#define STATROW          0      /* uses 1 row and 67 cols */
#define STATCOL          0
#define MEMROW           2      /* uses 4 rows and 45 cols */
#define MEMCOL           0
#define PAGEROW          1      /* uses 4 rows and 30 cols */
#define PAGECOL         47
#define INTSROW          5      /* uses all rows to bottom and 16 cols */
#define INTSCOL         64
#define PROCSROW         6      /* uses 3 rows and 20 cols */
#define PROCSCOL         0
#define GENSTATROW       7      /* uses 2 rows and 29 cols */
#define GENSTATCOL      22
#define VMSTATROW        5      /* uses 17 rows and 12-14 cols */
#define VMSTATCOL       52
#define GRAPHROW        10      /* uses 3 rows and 49-51 cols */
#define GRAPHCOL         0
#define VNSTATROW       13      /* uses 4 rows and 13 columns */
#define VNSTATCOL       35
#define NAMEIROW        14      /* uses 3 rows and 32 cols */
#define NAMEICOL         0
#define DISKROW         18      /* uses 5 rows and 47 cols (for 7 drives) */
#define DISKCOL          0

#define DRIVESPACE       7      /* max # for space */

#define MAXDRIVES       DRIVESPACE       /* max # to display */

int
initkre(void)
{
        char *cp, *cp1, *cp2, *intrnamebuf, *nextcp;
        int i;
        size_t sz;

        if (dsinit(MAXDRIVES) != 1)
                return(0);

        if (nintr == 0) {
                if (sysctlbyname("hw.intrcnt", NULL, &sz, NULL, 0) == -1) {
                        error("sysctl(hw.intrcnt...) failed: %s",
                              strerror(errno));
                        return (0);
                }
                nintr = sz / sizeof(u_long);
                intrloc = calloc(nintr, sizeof (long));
                intrname = calloc(nintr, sizeof (char *));
                intrnamebuf = sysctl_dynread("hw.intrnames", NULL);
                if (intrnamebuf == NULL || intrname == NULL ||
                    intrloc == NULL) {
                        error("Out of memory");
                        if (intrnamebuf)
                                free(intrnamebuf);
                        if (intrname)
                                free(intrname);
                        if (intrloc)
                                free(intrloc);
                        nintr = 0;
                        return(0);
                }
                for (cp = intrnamebuf, i = 0; i < nintr; i++) {
                        nextcp = cp + strlen(cp) + 1;

                        /* Discard trailing spaces. */
                        for (cp1 = nextcp - 1; cp1 > cp && *(cp1 - 1) == ' '; )
                                *--cp1 = '\0';

                        /* Convert "irqN: name" to "name irqN". */
                        if (strncmp(cp, "irq", 3) == 0) {
                                cp1 = cp + 3;
                                while (isdigit((u_char)*cp1))
                                        cp1++;
                                if (cp1 != cp && *cp1 == ':' &&
                                    *(cp1 + 1) == ' ') {
                                        sz = strlen(cp);
                                        *cp1 = '\0';
                                        cp1 = cp1 + 2;
                                        cp2 = strdup(cp);
                                        bcopy(cp1, cp, sz - (cp1 - cp) + 1);
                                        if (sz <= 10 + 4) {
                                                strcat(cp, " ");
                                                strcat(cp, cp2 + 3);
                                        }
                                        free(cp2);
                                }
                        }

                        /*
                         * Convert "name irqN" to "name N" if the former is
                         * longer than the field width.
                         */
                        if ((cp1 = strstr(cp, "irq")) != NULL &&
                            strlen(cp) > 10)
                                bcopy(cp1 + 3, cp1, strlen(cp1 + 3) + 1);

                        intrname[i] = cp;
                        cp = nextcp;
                }
                nextintsrow = INTSROW + 2;
                allocinfo(&s);
                allocinfo(&s1);
                allocinfo(&s2);
                allocinfo(&z);
        }
        GETSYSCTL("vm.kmem_size", kmem_size);
        GETSYSCTL("vm.stats.vm.v_page_count", v_page_count);
        getinfo(&s2);
        copyinfo(&s2, &s1);
        return(1);
}

void
fetchkre(void)
{
        time_t now;
        struct tm *tp;
        static int d_first = -1;

        if (d_first < 0)
                d_first = (*nl_langinfo(D_MD_ORDER) == 'd');

        time(&now);
        tp = localtime(&now);
        (void) strftime(buf, sizeof(buf),
                        d_first ? "%e %b %T" : "%b %e %T", tp);
        getinfo(&s);
}

void
labelkre(void)
{
        int i;

        clear();
        mvprintw(STATROW, STATCOL + 6, "users    Load");
        mvprintw(STATROW + 1, STATCOL + 3, "Mem usage:    %%Phy   %%Kmem");
        mvprintw(MEMROW, MEMCOL, "Mem:      REAL           VIRTUAL");
        mvprintw(MEMROW + 1, MEMCOL, "       Tot   Share     Tot    Share");
        mvprintw(MEMROW + 2, MEMCOL, "Act");
        mvprintw(MEMROW + 3, MEMCOL, "All");

        mvprintw(MEMROW + 1, MEMCOL + 40, "Free");

        mvprintw(PAGEROW, PAGECOL,     "         VN PAGER   SWAP PAGER");
        mvprintw(PAGEROW + 1, PAGECOL, "         in   out     in   out");
        mvprintw(PAGEROW + 2, PAGECOL, "count");
        mvprintw(PAGEROW + 3, PAGECOL, "pages");

        mvprintw(INTSROW, INTSCOL + 1, "Interrupts");
        mvprintw(INTSROW + 1, INTSCOL + 6, "total");

        mvprintw(VMSTATROW, VMSTATCOL + 6, "ioflt");
        mvprintw(VMSTATROW + 1, VMSTATCOL + 6, "cow");
        mvprintw(VMSTATROW + 2, VMSTATCOL + 6, "zfod");
        mvprintw(VMSTATROW + 3, VMSTATCOL + 6, "ozfod");
        mvprintw(VMSTATROW + 4, VMSTATCOL + 6 - 1, "%%ozfod");
        mvprintw(VMSTATROW + 5, VMSTATCOL + 6, "daefr");
        mvprintw(VMSTATROW + 6, VMSTATCOL + 6, "prcfr");
        mvprintw(VMSTATROW + 7, VMSTATCOL + 6, "totfr");
        mvprintw(VMSTATROW + 8, VMSTATCOL + 6, "react");
        mvprintw(VMSTATROW + 9, VMSTATCOL + 6, "pdwak");
        mvprintw(VMSTATROW + 10, VMSTATCOL + 6, "pdpgs");
        mvprintw(VMSTATROW + 11, VMSTATCOL + 6, "intrn");
        mvprintw(VMSTATROW + 12, VMSTATCOL + 6, "wire");
        mvprintw(VMSTATROW + 13, VMSTATCOL + 6, "act");
        mvprintw(VMSTATROW + 14, VMSTATCOL + 6, "inact");
        mvprintw(VMSTATROW + 15, VMSTATCOL + 6, "laund");
        mvprintw(VMSTATROW + 16, VMSTATCOL + 6, "free");
        if (LINES - 1 > VMSTATROW + 17)
                mvprintw(VMSTATROW + 17, VMSTATCOL + 6, "buf");

        mvprintw(GENSTATROW, GENSTATCOL, " Csw  Trp  Sys  Int  Sof  Flt");

        mvprintw(GRAPHROW, GRAPHCOL,
                "  . %%Sys    . %%Intr   . %%User   . %%Nice   . %%Idle");
        mvprintw(PROCSROW, PROCSCOL, "Proc:");
        mvprintw(PROCSROW + 1, PROCSCOL, "  r   p   d    s   w");
        mvprintw(GRAPHROW + 1, GRAPHCOL,
                "|    |    |    |    |    |    |    |    |    |    |");

        mvprintw(VNSTATROW, VNSTATCOL + 8, "dtbuf");
        mvprintw(VNSTATROW + 1, VNSTATCOL + 8, "maxvn");
        mvprintw(VNSTATROW + 2, VNSTATCOL + 8, "numvn");
        mvprintw(VNSTATROW + 3, VNSTATCOL + 8, "frevn");

        mvprintw(NAMEIROW, NAMEICOL, "Namei     Name-cache   Dir-cache");
        mvprintw(NAMEIROW + 1, NAMEICOL,
                "   Calls    hits   %%    hits   %%");
        dslabel(MAXDRIVES, DISKCOL, DISKROW);

        for (i = 0; i < nintr; i++) {
                if (intrloc[i] == 0)
                        continue;
                mvprintw(intrloc[i], INTSCOL + 6, "%-10.10s", intrname[i]);
        }
}

#define X(fld)  {t=s.fld[i]; s.fld[i]-=s1.fld[i]; if(state==TIME) s1.fld[i]=t;}
#define Q(fld)  {t=cur_dev.fld[i]; cur_dev.fld[i]-=last_dev.fld[i]; if(state==TIME) last_dev.fld[i]=t;}
#define Y(fld)  {t = s.fld; s.fld -= s1.fld; if(state == TIME) s1.fld = t;}
#define Z(fld)  {t = s.nchstats.fld; s.nchstats.fld -= s1.nchstats.fld; \
        if(state == TIME) s1.nchstats.fld = t;}
#define PUTRATE(fld, l, c, w) \
do { \
        Y(fld); \
        sysputwuint64(wnd, l, c, w, (s.fld/etime + 0.5), 0); \
} while (0)
#define MAXFAIL 5

static  char cpuchar[CPUSTATES] = { '=' , '+', '>', '-', ' ' };
static  char cpuorder[CPUSTATES] = { CP_SYS, CP_INTR, CP_USER, CP_NICE,
                                     CP_IDLE };

void
showkre(void)
{
        float f1, f2;
        int psiz, inttotal;
        int i, l, lc;
        static int failcnt = 0;

        etime = 0;
        for(i = 0; i < CPUSTATES; i++) {
                X(time);
                Q(cp_time);
                etime += s.time[i];
        }
        if (etime < 5.0) {      /* < 5 ticks - ignore this trash */
                if (failcnt++ >= MAXFAIL) {
                        clear();
                        mvprintw(2, 10, "The alternate system clock has died!");
                        mvprintw(3, 10, "Reverting to ``pigs'' display.");
                        move(CMDLINE, 0);
                        refresh();
                        failcnt = 0;
                        sleep(5);
                        command("pigs");
                }
                return;
        }
        failcnt = 0;
        etime /= hertz;
        etime /= ncpu;
        inttotal = 0;
        for (i = 0; i < nintr; i++) {
                if (s.intrcnt[i] == 0)
                        continue;
                X(intrcnt);
                l = (int)((float)s.intrcnt[i]/etime + 0.5);
                inttotal += l;
                if (intrloc[i] == 0) {
                        if (nextintsrow == LINES)
                                continue;
                        intrloc[i] = nextintsrow++;
                        mvprintw(intrloc[i], INTSCOL + 6, "%-10.10s",
                                intrname[i]);
                }
                putint(l, intrloc[i], INTSCOL, 5);
        }
        putint(inttotal, INTSROW + 1, INTSCOL, 5);
        Z(ncs_goodhits); Z(ncs_badhits); Z(ncs_miss);
        Z(ncs_long); Z(ncs_pass2); Z(ncs_2passes); Z(ncs_neghits);
        s.nchcount = nchtotal.ncs_goodhits + nchtotal.ncs_badhits +
            nchtotal.ncs_miss + nchtotal.ncs_long + nchtotal.ncs_neghits;
        if (state == TIME)
                s1.nchcount = s.nchcount;

        psiz = 0;
        f2 = 0.0;
        for (lc = 0; lc < CPUSTATES; lc++) {
                i = cpuorder[lc];
                f1 = cputime(i);
                f2 += f1;
                l = (int) ((f2 + 1.0) / 2.0) - psiz;
                putfloat(f1, GRAPHROW, GRAPHCOL + 10 * lc, 4, 1, 0);
                move(GRAPHROW + 2, psiz);
                psiz += l;
                while (l-- > 0)
                        addch(cpuchar[lc]);
        }

        putint(ucount(), STATROW, STATCOL, 5);
        putfloat(avenrun[0], STATROW, STATCOL + 20, 5, 2, 0);
        putfloat(avenrun[1], STATROW, STATCOL + 26, 5, 2, 0);
        putfloat(avenrun[2], STATROW, STATCOL + 32, 5, 2, 0);
        mvaddstr(STATROW, STATCOL + 55, buf);
        putfloat(100.0 * (v_page_count - total.t_free) / v_page_count,
           STATROW + 1, STATCOL + 15, 2, 0, 1);
        putfloat(100.0 * s.v_kmem_map_size / kmem_size,
           STATROW + 1, STATCOL + 22, 2, 0, 1);

        sysputpage(wnd, MEMROW + 2, MEMCOL + 4, 6, total.t_arm, 0);
        sysputpage(wnd, MEMROW + 2, MEMCOL + 12, 6, total.t_armshr, 0);
        sysputpage(wnd, MEMROW + 2, MEMCOL + 20, 6, total.t_avm, 0);
        sysputpage(wnd, MEMROW + 2, MEMCOL + 29, 6, total.t_avmshr, 0);
        sysputpage(wnd, MEMROW + 3, MEMCOL + 4, 6, total.t_rm, 0);
        sysputpage(wnd, MEMROW + 3, MEMCOL + 12, 6, total.t_rmshr, 0);
        sysputpage(wnd, MEMROW + 3, MEMCOL + 20, 6, total.t_vm, 0);
        sysputpage(wnd, MEMROW + 3, MEMCOL + 29, 6, total.t_vmshr, 0);
        sysputpage(wnd, MEMROW + 2, MEMCOL + 38, 6, total.t_free, 0);
        putint(total.t_rq - 1, PROCSROW + 2, PROCSCOL, 3);
        putint(total.t_pw, PROCSROW + 2, PROCSCOL + 4, 3);
        putint(total.t_dw, PROCSROW + 2, PROCSCOL + 8, 3);
        putint(total.t_sl, PROCSROW + 2, PROCSCOL + 12, 4);
        putint(total.t_sw, PROCSROW + 2, PROCSCOL + 17, 3);
        PUTRATE(v_io_faults, VMSTATROW, VMSTATCOL, 5);
        PUTRATE(v_cow_faults, VMSTATROW + 1, VMSTATCOL, 5);
        PUTRATE(v_zfod, VMSTATROW + 2, VMSTATCOL, 5);
        PUTRATE(v_ozfod, VMSTATROW + 3, VMSTATCOL, 5);
        putint(s.v_zfod != 0 ? (int)(s.v_ozfod * 100.0 / s.v_zfod) : 0,
            VMSTATROW + 4, VMSTATCOL, 5);
        PUTRATE(v_dfree, VMSTATROW + 5, VMSTATCOL, 5);
        PUTRATE(v_pfree, VMSTATROW + 6, VMSTATCOL, 5);
        PUTRATE(v_tfree, VMSTATROW + 7, VMSTATCOL, 5);
        PUTRATE(v_reactivated, VMSTATROW + 8, VMSTATCOL, 5);
        PUTRATE(v_pdwakeups, VMSTATROW + 9, VMSTATCOL, 5);
        PUTRATE(v_pdpages, VMSTATROW + 10, VMSTATCOL, 5);
        PUTRATE(v_intrans, VMSTATROW + 11, VMSTATCOL, 5);
        sysputpage(wnd, VMSTATROW + 12, VMSTATCOL, 5, s.v_wire_count, 0);
        sysputpage(wnd, VMSTATROW + 13, VMSTATCOL, 5, s.v_active_count, 0);
        sysputpage(wnd, VMSTATROW + 14, VMSTATCOL, 5, s.v_inactive_count, 0);
        sysputpage(wnd, VMSTATROW + 15, VMSTATCOL, 5, s.v_laundry_count, 0);
        sysputpage(wnd, VMSTATROW + 16, VMSTATCOL, 5, s.v_free_count, 0);
        if (LINES - 1 > VMSTATROW + 17)
                sysputuint64(wnd, VMSTATROW + 17, VMSTATCOL, 5, s.bufspace, 0);
        PUTRATE(v_vnodein, PAGEROW + 2, PAGECOL + 6, 5);
        PUTRATE(v_vnodeout, PAGEROW + 2, PAGECOL + 12, 5);
        PUTRATE(v_swapin, PAGEROW + 2, PAGECOL + 19, 5);
        PUTRATE(v_swapout, PAGEROW + 2, PAGECOL + 25, 5);
        PUTRATE(v_vnodepgsin, PAGEROW + 3, PAGECOL + 6, 5);
        PUTRATE(v_vnodepgsout, PAGEROW + 3, PAGECOL + 12, 5);
        PUTRATE(v_swappgsin, PAGEROW + 3, PAGECOL + 19, 5);
        PUTRATE(v_swappgsout, PAGEROW + 3, PAGECOL + 25, 5);
        PUTRATE(v_swtch, GENSTATROW + 1, GENSTATCOL, 4);
        PUTRATE(v_trap, GENSTATROW + 1, GENSTATCOL + 5, 4);
        PUTRATE(v_syscall, GENSTATROW + 1, GENSTATCOL + 10, 4);
        PUTRATE(v_intr, GENSTATROW + 1, GENSTATCOL + 15, 4);
        PUTRATE(v_soft, GENSTATROW + 1, GENSTATCOL + 20, 4);
        PUTRATE(v_vm_faults, GENSTATROW + 1, GENSTATCOL + 25, 4);
        switch(state) {
        case TIME:
                dsshow(MAXDRIVES, DISKCOL, DISKROW, &cur_dev, &last_dev);
                break;
        case RUN:
                dsshow(MAXDRIVES, DISKCOL, DISKROW, &cur_dev, &run_dev);
                break;
        case BOOT:
                dsshow(MAXDRIVES, DISKCOL, DISKROW, &cur_dev, NULL);
                break;
        }
        putint(s.numdirtybuffers, VNSTATROW, VNSTATCOL, 7);
        putint(s.maxvnodes, VNSTATROW + 1, VNSTATCOL, 7);
        putint(s.numvnodes, VNSTATROW + 2, VNSTATCOL, 7);
        putint(s.freevnodes, VNSTATROW + 3, VNSTATCOL, 7);
        putint(s.nchcount, NAMEIROW + 2, NAMEICOL, 8);
        putint((nchtotal.ncs_goodhits + nchtotal.ncs_neghits),
           NAMEIROW + 2, NAMEICOL + 9, 7);
#define nz(x)   ((x) ? (x) : 1)
        putfloat((nchtotal.ncs_goodhits+nchtotal.ncs_neghits) *
           100.0 / nz(s.nchcount),
           NAMEIROW + 2, NAMEICOL + 17, 3, 0, 1);
        putint(nchtotal.ncs_pass2, NAMEIROW + 2, NAMEICOL + 21, 7);
        putfloat(nchtotal.ncs_pass2 * 100.0 / nz(s.nchcount),
           NAMEIROW + 2, NAMEICOL + 29, 3, 0, 1);
#undef nz
}

int
cmdkre(const char *cmd, const char *args)
{
        int retval;

        if (prefix(cmd, "run")) {
                retval = 1;
                copyinfo(&s2, &s1);
                switch (devstat_getdevs(NULL, &run_dev)) {
                case -1:
                        errx(1, "%s", devstat_errbuf);
                        break;
                case 1:
                        num_devices = run_dev.dinfo->numdevs;
                        generation = run_dev.dinfo->generation;
                        retval = dscmd("refresh", NULL, MAXDRIVES, &cur_dev);
                        if (retval == 2)
                                labelkre();
                        break;
                default:
                        break;
                }
                state = RUN;
                return (retval);
        }
        if (prefix(cmd, "boot")) {
                state = BOOT;
                copyinfo(&z, &s1);
                return (1);
        }
        if (prefix(cmd, "time")) {
                state = TIME;
                return (1);
        }
        if (prefix(cmd, "zero")) {
                retval = 1;
                if (state == RUN) {
                        getinfo(&s1);
                        switch (devstat_getdevs(NULL, &run_dev)) {
                        case -1:
                                errx(1, "%s", devstat_errbuf);
                                break;
                        case 1:
                                num_devices = run_dev.dinfo->numdevs;
                                generation = run_dev.dinfo->generation;
                                retval = dscmd("refresh",NULL, MAXDRIVES, &cur_dev);
                                if (retval == 2)
                                        labelkre();
                                break;
                        default:
                                break;
                        }
                }
                return (retval);
        }
        retval = dscmd(cmd, args, MAXDRIVES, &cur_dev);

        if (retval == 2)
                labelkre();

        return(retval);
}

/* calculate number of users on the system */
static int
ucount(void)
{
        int nusers = 0;
        struct utmpx *ut;

        setutxent();
        while ((ut = getutxent()) != NULL)
                if (ut->ut_type == USER_PROCESS)
                        nusers++;
        endutxent();

        return (nusers);
}

static float
cputime(int indx)
{
        double lt;
        int i;

        lt = 0;
        for (i = 0; i < CPUSTATES; i++)
                lt += s.time[i];
        if (lt == 0.0)
                lt = 1.0;
        return (s.time[indx] * 100.0 / lt);
}

void
putint(int n, int l, int lc, int w)
{

        do_putuint64(n, l, lc, w, SI);
}

static void
do_putuint64(uint64_t n, int l, int lc, int w, int div)
{
        int snr;
        char b[128];
        char lbuf[128];

        move(l, lc);
#ifdef DEBUG
                while (w-- > 0)
                        addch('*');
                return;
#endif
        if (n == 0) {
                while (w-- > 0)
                        addch(' ');
                return;
        }
        snr = snprintf(b, sizeof(b), "%*ju", w, (uintmax_t)n);
        if (snr != w) {
                humanize_number(lbuf, w, n, "", HN_AUTOSCALE,
                    HN_NOSPACE | HN_DECIMAL | div);
                snr = snprintf(b, sizeof(b), "%*s", w, lbuf);
        }
        if (snr != w) {
                while (w-- > 0)
                        addch('*');
                return;
        }
        addstr(b);
}

void
putfloat(double f, int l, int lc, int w, int d, int nz)
{
        int snr;
        char b[128];

        move(l, lc);
#ifdef DEBUG
                while (--w >= 0)
                        addch('*');
                return;
#endif
        if (nz && f == 0.0) {
                while (--w >= 0)
                        addch(' ');
                return;
        }
        snr = snprintf(b, sizeof(b), "%*.*f", w, d, f);
        if (snr != w)
                snr = snprintf(b, sizeof(b), "%*.0f", w, f);
        if (snr != w)
                snr = snprintf(b, sizeof(b), "%*.0fk", w - 1, f / 1000);
        if (snr != w)
                snr = snprintf(b, sizeof(b), "%*.0fM", w - 1, f / 1000000);
        if (snr != w) {
                while (--w >= 0)
                        addch('*');
                return;
        }
        addstr(b);
}

void
putlongdouble(long double f, int l, int lc, int w, int d, int nz)
{
        int snr;
        char b[128];

        move(l, lc);
#ifdef DEBUG
                while (--w >= 0)
                        addch('*');
                return;
#endif
        if (nz && f == 0.0) {
                while (--w >= 0)
                        addch(' ');
                return;
        }
        snr = snprintf(b, sizeof(b), "%*.*Lf", w, d, f);
        if (snr != w)
                snr = snprintf(b, sizeof(b), "%*.0Lf", w, f);
        if (snr != w)
                snr = snprintf(b, sizeof(b), "%*.0Lfk", w - 1, f / 1000);
        if (snr != w)
                snr = snprintf(b, sizeof(b), "%*.0LfM", w - 1, f / 1000000);
        if (snr != w) {
                while (--w >= 0)
                        addch('*');
                return;
        }
        addstr(b);
}

static void
getinfo(struct Info *ls)
{
        struct devinfo *tmp_dinfo;
        size_t size;
        int mib[2];

        GETSYSCTL("kern.cp_time", ls->time);
        GETSYSCTL("kern.cp_time", cur_dev.cp_time);
        GETSYSCTL("vm.stats.sys.v_swtch", ls->v_swtch);
        GETSYSCTL("vm.stats.sys.v_trap", ls->v_trap);
        GETSYSCTL("vm.stats.sys.v_syscall", ls->v_syscall);
        GETSYSCTL("vm.stats.sys.v_intr", ls->v_intr);
        GETSYSCTL("vm.stats.sys.v_soft", ls->v_soft);
        GETSYSCTL("vm.stats.vm.v_vm_faults", ls->v_vm_faults);
        GETSYSCTL("vm.stats.vm.v_io_faults", ls->v_io_faults);
        GETSYSCTL("vm.stats.vm.v_cow_faults", ls->v_cow_faults);
        GETSYSCTL("vm.stats.vm.v_zfod", ls->v_zfod);
        GETSYSCTL("vm.stats.vm.v_ozfod", ls->v_ozfod);
        GETSYSCTL("vm.stats.vm.v_swapin", ls->v_swapin);
        GETSYSCTL("vm.stats.vm.v_swapout", ls->v_swapout);
        GETSYSCTL("vm.stats.vm.v_swappgsin", ls->v_swappgsin);
        GETSYSCTL("vm.stats.vm.v_swappgsout", ls->v_swappgsout);
        GETSYSCTL("vm.stats.vm.v_vnodein", ls->v_vnodein);
        GETSYSCTL("vm.stats.vm.v_vnodeout", ls->v_vnodeout);
        GETSYSCTL("vm.stats.vm.v_vnodepgsin", ls->v_vnodepgsin);
        GETSYSCTL("vm.stats.vm.v_vnodepgsout", ls->v_vnodepgsout);
        GETSYSCTL("vm.stats.vm.v_intrans", ls->v_intrans);
        GETSYSCTL("vm.stats.vm.v_reactivated", ls->v_reactivated);
        GETSYSCTL("vm.stats.vm.v_pdwakeups", ls->v_pdwakeups);
        GETSYSCTL("vm.stats.vm.v_pdpages", ls->v_pdpages);
        GETSYSCTL("vm.stats.vm.v_dfree", ls->v_dfree);
        GETSYSCTL("vm.stats.vm.v_pfree", ls->v_pfree);
        GETSYSCTL("vm.stats.vm.v_tfree", ls->v_tfree);
        GETSYSCTL("vm.stats.vm.v_free_count", ls->v_free_count);
        GETSYSCTL("vm.stats.vm.v_wire_count", ls->v_wire_count);
        GETSYSCTL("vm.stats.vm.v_active_count", ls->v_active_count);
        GETSYSCTL("vm.stats.vm.v_inactive_count", ls->v_inactive_count);
        GETSYSCTL("vm.stats.vm.v_laundry_count", ls->v_laundry_count);
        GETSYSCTL("vfs.bufspace", ls->bufspace);
        GETSYSCTL("kern.maxvnodes", ls->maxvnodes);
        GETSYSCTL("vfs.numvnodes", ls->numvnodes);
        GETSYSCTL("vfs.freevnodes", ls->freevnodes);
        GETSYSCTL("vfs.cache.nchstats", ls->nchstats);
        GETSYSCTL("vfs.numdirtybuffers", ls->numdirtybuffers);
        GETSYSCTL("vm.kmem_map_size", ls->v_kmem_map_size);
        getsysctl("hw.intrcnt", ls->intrcnt, nintr * sizeof(u_long));

        size = sizeof(ls->Total);
        mib[0] = CTL_VM;
        mib[1] = VM_TOTAL;
        if (sysctl(mib, 2, &ls->Total, &size, NULL, 0) < 0) {
                error("Can't get kernel info: %s\n", strerror(errno));
                bzero(&ls->Total, sizeof(ls->Total));
        }
        size = sizeof(ncpu);
        if (sysctlbyname("hw.ncpu", &ncpu, &size, NULL, 0) < 0 ||
            size != sizeof(ncpu))
                ncpu = 1;

        tmp_dinfo = last_dev.dinfo;
        last_dev.dinfo = cur_dev.dinfo;
        cur_dev.dinfo = tmp_dinfo;

        last_dev.snap_time = cur_dev.snap_time;
        dsgetinfo(&cur_dev);
}

static void
allocinfo(struct Info *ls)
{

        ls->intrcnt = (long *) calloc(nintr, sizeof(long));
        if (ls->intrcnt == NULL)
                errx(2, "out of memory");
}

static void
copyinfo(struct Info *from, struct Info *to)
{
        long *intrcnt;

        /*
         * time, wds, seek, and xfer are malloc'd so we have to
         * save the pointers before the structure copy and then
         * copy by hand.
         */
        intrcnt = to->intrcnt;
        *to = *from;

        bcopy(from->intrcnt, to->intrcnt = intrcnt, nintr * sizeof (int));
}