407 lines
9.7 KiB
C
407 lines
9.7 KiB
C
/* $NetBSD: ps.c,v 1.40 2021/04/17 08:34:27 maya Exp $ */
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/*-
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* Copyright (c) 1999
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* The NetBSD Foundation, Inc. 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 NetBSD Foundation.
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* 4. Neither the name of the Foundation 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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/*
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* XXX Notes XXX
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* showps -- print data needed at each refresh
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* fetchps -- get data used by mode (done at each refresh)
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* labelps -- print labels (ie info not needing refreshing)
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* initps -- prepare once-only data structures for mode
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* openps -- prepare per-run information for mode, return window
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* closeps -- close mode to prepare to switch modes
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* cmdps -- optional, handle commands
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: ps.c,v 1.40 2021/04/17 08:34:27 maya Exp $");
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/sched.h>
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#include <sys/sysctl.h>
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#include <sys/stat.h>
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#include <curses.h>
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#include <math.h>
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#include <pwd.h>
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#include <stdlib.h>
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#include <string.h>
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#include <tzfile.h>
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#include <unistd.h>
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#include "systat.h"
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#include "extern.h"
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#include "ps.h"
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int compare_pctcpu_noidle(const void *, const void *);
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char *state2str(struct kinfo_proc2 *);
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char *tty2str(struct kinfo_proc2 *);
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int rss2int(struct kinfo_proc2 *);
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int vsz2int(struct kinfo_proc2 *);
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char *comm2str(struct kinfo_proc2 *);
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double pmem2float(struct kinfo_proc2 *);
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char *start2str(struct kinfo_proc2 *);
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char *time2str(struct kinfo_proc2 *);
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static time_t now;
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#define SHOWUSER_ANY (uid_t)-1
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static uid_t showuser = SHOWUSER_ANY;
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#ifndef P_ZOMBIE
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#define P_ZOMBIE(p) ((p)->p_stat == SZOMB)
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#endif
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void
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labelps(void)
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{
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mvwaddstr(wnd, 0, 0, "USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND");
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}
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void
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showps(void)
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{
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int i, k, y, vsz, rss;
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const char *user, *comm, *state, *tty, *start, *time_str;
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pid_t pid;
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double pctcpu, pctmem;
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struct kinfo_proc2 *kp;
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now = 0; /* force start2str to reget current time */
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qsort(pt, nproc + 1, sizeof (struct p_times), compare_pctcpu_noidle);
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y = 1;
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i = nproc + 1;
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if (i > getmaxy(wnd)-2)
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i = getmaxy(wnd)-1;
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for (k = 0; i > 0 ; k++) {
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if (pt[k].pt_kp == NULL) /* We're all the way down to the imaginary idle proc */
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break;
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kp = pt[k].pt_kp;
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if (showuser != SHOWUSER_ANY && kp->p_uid != showuser)
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continue;
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user = user_from_uid(kp->p_uid, 0);
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pid = kp->p_pid;
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pctcpu = 100.0 * pt[k].pt_pctcpu;
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pctmem = pmem2float(pt[k].pt_kp);
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vsz = vsz2int(pt[k].pt_kp);
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rss = rss2int(pt[k].pt_kp);
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tty = tty2str(pt[k].pt_kp);
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state = state2str(pt[k].pt_kp);
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start = start2str(pt[k].pt_kp);
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time_str = time2str(pt[k].pt_kp);
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comm = comm2str(pt[k].pt_kp);
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/*comm = pt[k].pt_kp->kp_proc.p_comm; */
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wmove(wnd, y, 0);
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wclrtoeol(wnd);
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mvwprintw(wnd, y++, 0,
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"%-8.8s%5d %4.1f %4.1f %6d %5d %-3s %-4s %7s %10.10s %s",
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user, pid, pctcpu, pctmem, vsz, rss, tty, state, start,
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time_str, comm);
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i--;
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}
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wmove(wnd, y, 0);
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wclrtobot(wnd);
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}
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int
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compare_pctcpu_noidle(const void *a, const void *b)
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{
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if (((const struct p_times *) a)->pt_kp == NULL)
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return 1;
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if (((const struct p_times *) b)->pt_kp == NULL)
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return -1;
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return (((const struct p_times *) a)->pt_pctcpu >
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((const struct p_times *) b)->pt_pctcpu)? -1: 1;
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}
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/* from here down adapted from .../src/usr.bin/ps/print.c . Any mistakes are my own, however. */
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char *
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state2str(struct kinfo_proc2 *kp)
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{
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int flag;
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char *cp;
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char buf[5];
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static char statestr[4];
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flag = kp->p_flag;
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cp = buf;
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switch (kp->p_stat) {
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case LSSTOP:
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*cp = 'T';
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break;
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case LSSLEEP:
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if (flag & L_SINTR) /* interruptable (long) */
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*cp = kp->p_slptime >= (uint32_t)maxslp ? 'I' : 'S';
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else
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*cp = 'D';
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break;
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case LSRUN:
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case LSIDL:
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case LSONPROC:
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*cp = 'R';
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break;
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case LSZOMB:
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#ifdef LSDEAD
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case LSDEAD:
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#endif
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*cp = 'Z';
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break;
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default:
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*cp = '?';
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}
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cp++;
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if (kp->p_nice < NZERO)
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*cp++ = '<';
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else if (kp->p_nice > NZERO)
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*cp++ = 'N';
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if (flag & P_TRACED)
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*cp++ = 'X';
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if (flag & P_WEXIT &&
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/* XXX - I don't like this */
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(kp->p_stat != LSZOMB))
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*cp++ = 'E';
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if (flag & P_PPWAIT)
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*cp++ = 'V';
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if (kp->p_eflag & EPROC_SLEADER)
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*cp++ = 's';
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if ((flag & P_CONTROLT) && kp->p__pgid == kp->p_tpgid)
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*cp++ = '+';
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*cp = '\0';
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snprintf(statestr, sizeof(statestr), "%-s", buf);
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return statestr;
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}
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char *
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tty2str(struct kinfo_proc2 *kp)
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{
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static char ttystr[4];
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char *tty_name;
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if (kp->p_tdev == (uint32_t)NODEV ||
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(tty_name = devname(kp->p_tdev, S_IFCHR)) == NULL)
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strlcpy(ttystr, "??", sizeof(ttystr));
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else {
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if (strncmp(tty_name, "tty", 3) == 0 ||
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strncmp(tty_name, "dty", 3) == 0)
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tty_name += 3;
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snprintf(ttystr, sizeof(ttystr), "%s%c", tty_name,
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kp->p_eflag & EPROC_CTTY ? ' ' : '-');
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}
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return ttystr;
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}
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#define pgtok(a) (((a)*getpagesize())/1024)
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int
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vsz2int(struct kinfo_proc2 *kp)
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{
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int i;
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i = pgtok(kp->p_vm_msize);
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return ((i < 0) ? 0 : i);
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}
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int
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rss2int(struct kinfo_proc2 *kp)
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{
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int i;
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i = pgtok(kp->p_vm_rssize);
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/* XXX don't have info about shared */
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return ((i < 0) ? 0 : i);
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}
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char *
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comm2str(struct kinfo_proc2 *kp)
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{
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char **argv;
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static char commstr[41];
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commstr[0]='\0';
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argv = kvm_getargv2(kd, kp, 40);
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if (argv != NULL) {
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while (*argv) {
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strlcat(commstr, *argv, sizeof(commstr));
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argv++;
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strlcat(commstr, " ", sizeof(commstr));
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}
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} else {
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const char *fmt;
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/*
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* Commands that don't set an argv vector are printed with
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* square brackets if they are system commands. Otherwise
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* they are printed within parentheses.
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*/
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if (kp->p_flag & P_SYSTEM)
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fmt = "[]";
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else
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fmt = "()";
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snprintf(commstr, sizeof(commstr), "%c%s%c", fmt[0],
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kp->p_comm, fmt[1]);
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}
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return commstr;
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}
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double
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pmem2float(struct kinfo_proc2 *kp)
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{
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double fracmem;
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static int szptudot = -1;
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/*
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* XXX want pmap ptpages, segtab, etc. (per architecture),
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* not just the uarea.
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*/
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if (szptudot < 0) {
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int mib[2];
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size_t size;
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int uspace;
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mib[0] = CTL_VM;
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mib[1] = VM_USPACE;
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size = sizeof(uspace);
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if (sysctl(mib, 2, &uspace, &size, NULL, 0) == 0) {
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szptudot = uspace / getpagesize();
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} else {
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/* pick a vaguely useful default */
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szptudot = getpagesize();
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}
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}
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/* XXX don't have info about shared */
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fracmem = ((double)kp->p_vm_rssize + szptudot) / mempages;
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return (fracmem >= 0) ? 100.0 * fracmem : 0;
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}
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char *
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start2str(struct kinfo_proc2 *kp)
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{
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struct timeval u_start;
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struct tm *tp;
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time_t startt;
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static char startstr[10];
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u_start.tv_sec = kp->p_ustart_sec;
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u_start.tv_usec = kp->p_ustart_usec;
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startt = u_start.tv_sec;
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tp = localtime(&startt);
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if (now == 0)
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time(&now);
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if (now - u_start.tv_sec < 24 * SECSPERHOUR) {
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strftime(startstr, sizeof(startstr) - 1, "%l:%M%p", tp);
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} else if (now - u_start.tv_sec < 7 * SECSPERDAY) {
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strftime(startstr, sizeof(startstr) - 1, "%a%I%p", tp);
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} else
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strftime(startstr, sizeof(startstr) - 1, "%e%b%y", tp);
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return startstr;
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}
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char *
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time2str(struct kinfo_proc2 *kp)
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{
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long secs;
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long psecs; /* "parts" of a second. first micro, then centi */
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static char timestr[18];
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/* XXX - I don't like this. */
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if (kp->p_stat == SZOMB) {
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secs = 0;
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psecs = 0;
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} else {
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/*
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* This counts time spent handling interrupts. We could
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* fix this, but it is not 100% trivial (and interrupt
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* time fractions only work on the sparc anyway). XXX
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*/
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secs = kp->p_rtime_sec;
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psecs = kp->p_rtime_usec;
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#if 0
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if (sumrusage) {
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secs += k->ki_u.u_cru.ru_utime.tv_sec +
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k->ki_u.u_cru.ru_stime.tv_sec;
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psecs += k->ki_u.u_cru.ru_utime.tv_usec +
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k->ki_u.u_cru.ru_stime.tv_usec;
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}
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#endif
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/*
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* round and scale to 100's
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*/
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psecs = (psecs + 5000) / 10000;
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secs += psecs / 100;
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psecs = psecs % 100;
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}
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snprintf(timestr, sizeof(timestr), "%3ld:%02ld.%02ld", secs/60,
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secs%60, psecs);
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return timestr;
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}
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void
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ps_user(char *args)
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{
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uid_t uid;
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if (args == NULL || *args == 0 || strcmp(args, "+") == 0) {
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uid = SHOWUSER_ANY;
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} else if (uid_from_user(args, &uid) != 0) {
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error("%s: unknown user", args);
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return;
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}
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showuser = uid;
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display(0);
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}
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