* Fix a display buglet: if the process list is exhausted before the window's

bottom is reached, clear the remaining lines, lest there be stale process
  entries if the process list shrinks.
* Implement a top(1)-like `user' command in the ps display.

usr.bin/systat/cmdtab.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: cmdtab.c,v 1.11 1999/12/20 03:45:02 jwise Exp $	*/
+/*	$NetBSD: cmdtab.c,v 1.12 1999/12/22 14:46:14 kleink Exp $	*/
 
 /*-
  * Copyright (c) 1980, 1992, 1993
@@ -38,7 +38,7 @@
 #if 0
 static char sccsid[] = "@(#)cmdtab.c	8.1 (Berkeley) 6/6/93";
 #endif
-__RCSID("$NetBSD: cmdtab.c,v 1.11 1999/12/20 03:45:02 jwise Exp $");
+__RCSID("$NetBSD: cmdtab.c,v 1.12 1999/12/22 14:46:14 kleink Exp $");
 #endif /* not lint */
 
 #include "systat.h"
@@ -82,6 +82,11 @@ struct command netstat_commands[] = {
 	{ 0 }
 };
 
+struct command ps_commands[] = {
+	{ "user",	ps_user,	"limit displayed processes to a user"},
+	{ 0 }
+};
+
 struct command	vmstat_commands[] = {
 	{ "boot",	vmstat_boot,	"show total vm stats since boot"},
 	{ "run",	vmstat_run,	"show running total vm stats"},
@@ -126,7 +131,7 @@ struct mode modes[] = {
 	  initnetstat,	opennetstat,	closenetstat,	netstat_commands,
 	  CF_LOADAV },
 	{ "ps",		showps,		fetchpigs,	labelps,
-	  initpigs,	openpigs,	closepigs,	0,
+	  initpigs,	openpigs,	closepigs,	ps_commands,
 	  CF_LOADAV },
 	{ "swap",	showswap,	fetchswap,	labelswap,
 	  initswap,	openswap,	closeswap,	0,

usr.bin/systat/extern.h

@@ -1,4 +1,4 @@
-/*	$NetBSD: extern.h,v 1.16 1999/12/20 04:06:25 jwise Exp $	*/
+/*	$NetBSD: extern.h,v 1.17 1999/12/22 14:46:15 kleink Exp $	*/
 
 /*-
  * Copyright (c) 1991, 1993
@@ -145,6 +145,7 @@ WINDOW	*opennetstat __P((void));
 WINDOW	*openpigs __P((void));
 WINDOW	*openswap __P((void));
 WINDOW	*opentcp __P((void));
+void	 ps_user __P((char *));
 void	 redraw __P((int));
 void	 showbufcache __P((void));
 void	 showicmp __P((void));

usr.bin/systat/ps.c

@@ -1,4 +1,4 @@
-/*      $NetBSD: ps.c,v 1.11 1999/12/20 19:31:47 jwise Exp $  */
+/*      $NetBSD: ps.c,v 1.12 1999/12/22 14:46:15 kleink Exp $  */
 
 /*-
  * Copyright (c) 1999
@@ -45,7 +45,7 @@
 
 #include <sys/cdefs.h>
 #ifndef lint
-__RCSID("$NetBSD: ps.c,v 1.11 1999/12/20 19:31:47 jwise Exp $");
+__RCSID("$NetBSD: ps.c,v 1.12 1999/12/22 14:46:15 kleink Exp $");
 #endif /* not lint */
 
 #include <sys/param.h>
@@ -80,6 +80,9 @@ char *time2str __P((struct kinfo_proc *));
 
 static time_t now;
 
+#define SHOWUSER_ANY	(uid_t)-1
+static uid_t showuser = SHOWUSER_ANY;
+
 void
 labelps ()
 {
@@ -103,11 +106,13 @@ showps ()
 	i = nproc + 1;
 	if (i > getmaxy(wnd)-2)
 		i = getmaxy(wnd)-1;
-	for (k = 0; i > 0 ; i--, y++, k++) {
+	for (k = 0; i > 0 ; k++) {
 		if (pt[k].pt_kp == NULL) /* We're all the way down to the imaginary idle proc */
-			return;
+			break;
 
 		ep = &pt[k].pt_kp->kp_eproc;
+		if (showuser != SHOWUSER_ANY && ep->e_ucred.cr_uid != showuser)
+			continue;
 		user = user_from_uid(ep->e_ucred.cr_uid, 0);
 		pid = pt[k].pt_kp->kp_proc.p_pid;
 		pctcpu = 100.0 * pt[k].pt_pctcpu;
@@ -123,9 +128,13 @@ showps ()
 
 		wmove(wnd, y, 0);
 		wclrtoeol(wnd);
-		mvwprintw(wnd, y, 0, "%-8.8s%5d %4.1f %4.1f %6d %5d %-3s %-4s %7s %10.10s %s",
+		mvwprintw(wnd, y++, 0,
-			user, pid, pctcpu, pctmem, vsz, rss, tty, state, start, time, comm);
+		    "%-8.8s%5d %4.1f %4.1f %6d %5d %-3s %-4s %7s %10.10s %s",
+		    user, pid, pctcpu, pctmem, vsz, rss, tty, state, start, time, comm);
+		i--;
 	}
+	wmove(wnd, y, 0);
+	wclrtobot(wnd);
 }
 
 int
@@ -384,3 +393,22 @@ time2str(kp)
 
 	return timestr;
 }
+
+void
+ps_user(args)
+	char *args;
+{
+	uid_t uid;
+
+	if (args == NULL)
+		args = "";
+	if (strcmp(args, "+") == 0) {
+		uid = SHOWUSER_ANY;
+	} else if (uid_from_user(args, &uid) != 0) {
+		error("%s: unknown user", args);
+		return;
+	}
+
+	showuser = uid;
+	display(0);
+}

usr.bin/systat/systat.1

@@ -1,4 +1,4 @@
-.\"	$NetBSD: systat.1,v 1.16 1999/11/15 06:16:57 simonb Exp $
+.\"	$NetBSD: systat.1,v 1.17 1999/12/22 14:46:15 kleink Exp $
 .\"
 .\" Copyright (c) 1985, 1990, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -281,6 +281,19 @@ by the command
 .Xr ps 1
 with the flags
 .Fl aux .
+.Pp
+The following command is specific to the
+.Ic ps
+display; the minimum unambiguous prefix may be supplied.
+.Pp
+.Bl -tag -width Fl -compact
+.It Cm user Ar name
+Limit the list of processes displayed to those owned by user
+.Ar name .
+If
+.Ar name
+is specified as `+', processes owned by any user are displayed (default).
+.El
 .It Ic swap
 Show information about swap space usage on all the 
 swap areas configured with