xref: /freebsd/sys/ddb/db_ps.c (revision 7f3dea244c40159a41ab22da77a434d7c5b5e85a)
1 /*-
2  * Copyright (c) 1993 The Regents of the University of California.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *	This product includes software developed by the University of
16  *	California, Berkeley and its contributors.
17  * 4. Neither the name of the University nor the names of its contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  *
33  *	$Id: db_ps.c,v 1.18 1999/05/13 13:01:46 bde Exp $
34  */
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/proc.h>
38 #include <sys/cons.h>
39 
40 #include <ddb/ddb.h>
41 
42 void
43 db_ps(dummy1, dummy2, dummy3, dummy4)
44 	db_expr_t	dummy1;
45 	boolean_t	dummy2;
46 	db_expr_t	dummy3;
47 	char *		dummy4;
48 {
49 	int np;
50 	int nl = 0;
51 	volatile struct proc *p, *pp;
52 
53 	np = nprocs;
54 
55 	if (allproc.lh_first != NULL)
56 		p = allproc.lh_first;
57 	else
58 		p = &proc0;
59 
60 	db_printf("  pid   proc     addr    uid  ppid  pgrp  flag stat wmesg   wchan   cmd\n");
61 	while (--np >= 0) {
62 		/*
63 		 * XXX just take 20 for now...
64 		 */
65 		if (nl++ == 20) {
66 			int c;
67 
68 			db_printf("--More--");
69 			c = cngetc();
70 			db_printf("\r");
71 			/*
72 			 * A whole screenfull or just one line?
73 			 */
74 			switch (c) {
75 			case '\n':		/* just one line */
76 				nl = 20;
77 				break;
78 			case ' ':
79 				nl = 0;		/* another screenfull */
80 				break;
81 			default:		/* exit */
82 				db_printf("\n");
83 				return;
84 			}
85 		}
86 		if (p == NULL) {
87 			printf("oops, ran out of processes early!\n");
88 			break;
89 		}
90 		pp = p->p_pptr;
91 		if (pp == NULL)
92 			pp = p;
93 
94 		db_printf("%5d %8p %8p %4d %5d %5d %06x  %d",
95 		    p->p_pid, (volatile void *)p, (void *)p->p_addr,
96 		    p->p_cred ? p->p_cred->p_ruid : 0, pp->p_pid,
97 		    p->p_pgrp ? p->p_pgrp->pg_id : 0, p->p_flag, p->p_stat);
98 		if (p->p_wchan) {
99 			db_printf("  %6s %8p", p->p_wmesg, (void *)p->p_wchan);
100 		} else {
101 			db_printf("                 ");
102 		}
103 		db_printf(" %s\n", p->p_comm ? p->p_comm : "");
104 
105 		p = p->p_list.le_next;
106 		if (p == NULL && np > 0)
107 			p = zombproc.lh_first;
108     	}
109 }
110