[src/trunk]: src/bin/ps Use tty "?" to select processes with no controlling t...

[simonb <simonb%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/1a9203cbaf62
branches:  trunk
changeset: 484933:1a9203cbaf62
user:      simonb <simonb%NetBSD.org@localhost>
date:      Sat Apr 15 04:40:46 2000 +0000

description:
Use tty "?" to select processes with no controlling tty and tty "-" to
select processes with a revoked controlling tty.

Idea from SunOS/Solaris, suggested by Alexis Rosen.

diffstat:

 bin/ps/ps.1 |   6 ++++--
 bin/ps/ps.c |  23 +++++++++++++++--------
 2 files changed, 19 insertions(+), 10 deletions(-)

diffs (71 lines):

diff -r a45e5eefa03c -r 1a9203cbaf62 bin/ps/ps.1
--- a/bin/ps/ps.1       Sat Apr 15 04:38:47 2000 +0000
+++ b/bin/ps/ps.1       Sat Apr 15 04:40:46 2000 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: ps.1,v 1.35 2000/04/10 06:37:37 chs Exp $
+.\"    $NetBSD: ps.1,v 1.36 2000/04/15 04:40:46 simonb Exp $
 .\"
 .\" Copyright (c) 1980, 1990, 1991, 1993, 1994
 .\"    The Regents of the University of California.  All rights reserved.
@@ -165,7 +165,9 @@
 with the standard input.
 .It Fl t
 Display information about processes attached to the specified terminal
-device.
+device.  Use an question mark (``?'') for processes not attached to a
+terminal device and a minus sign (``-'') for processes that have
+been revoked from their terminal device.
 .It Fl U
 Displays processes belonging to the user whose username or uid has 
 been given to the
diff -r a45e5eefa03c -r 1a9203cbaf62 bin/ps/ps.c
--- a/bin/ps/ps.c       Sat Apr 15 04:38:47 2000 +0000
+++ b/bin/ps/ps.c       Sat Apr 15 04:40:46 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: ps.c,v 1.35 2000/04/10 06:37:37 chs Exp $      */
+/*     $NetBSD: ps.c,v 1.36 2000/04/15 04:40:46 simonb Exp $   */
 
 /*-
  * Copyright (c) 1990, 1993, 1994
@@ -43,7 +43,7 @@
 #if 0
 static char sccsid[] = "@(#)ps.c       8.4 (Berkeley) 4/2/94";
 #else
-__RCSID("$NetBSD: ps.c,v 1.35 2000/04/10 06:37:37 chs Exp $");
+__RCSID("$NetBSD: ps.c,v 1.36 2000/04/15 04:40:46 simonb Exp $");
 #endif
 #endif /* not lint */
 
@@ -218,19 +218,26 @@
                        struct stat sb;
                        char *ttypath, pathbuf[MAXPATHLEN];
 
-                       if (strcmp(ttname, "co") == 0)
+                       flag = 0;
+                       if (strcmp(ttname, "?") == 0)
+                               flag = KERN_PROC_TTY_NODEV;
+                       else if (strcmp(ttname, "-") == 0)
+                               flag = KERN_PROC_TTY_REVOKE;
+                       else if (strcmp(ttname, "co") == 0)
                                ttypath = _PATH_CONSOLE;
                        else if (*ttname != '/')
                                (void)snprintf(ttypath = pathbuf,
                                    sizeof(pathbuf), "%s%s", _PATH_TTY, ttname);
                        else
                                ttypath = ttname;
-                       if (stat(ttypath, &sb) == -1)
-                               err(1, "%s", ttypath);
-                       if (!S_ISCHR(sb.st_mode))
-                               errx(1, "%s: not a terminal", ttypath);
                        what = KERN_PROC_TTY;
-                       flag = sb.st_rdev;
+                       if (flag == 0) {
+                               if (stat(ttypath, &sb) == -1)
+                                       err(1, "%s", ttypath);
+                               if (!S_ISCHR(sb.st_mode))
+                                       errx(1, "%s: not a terminal", ttypath);
+                               flag = sb.st_rdev;
+                       }
                        break;
                }
                case 'U':