305 lines
7.4 KiB
C
305 lines
7.4 KiB
C
/* $NetBSD: db_xxx.c,v 1.30 2005/02/26 23:04:17 perry Exp $ */
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/*
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* Copyright (c) 1982, 1986, 1989, 1991, 1993
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* The Regents of the University of California. 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. Neither the name of the University 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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* from: kern_proc.c 8.4 (Berkeley) 1/4/94
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*/
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/*
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* Miscellaneous DDB functions that are intimate (xxx) with various
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* data structures and functions used by the kernel (proc, callout).
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*/
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#include "opt_kgdb.h"
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: db_xxx.c,v 1.30 2005/02/26 23:04:17 perry Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/msgbuf.h>
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#include <sys/callout.h>
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#include <sys/signalvar.h>
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#include <sys/resourcevar.h>
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#include <machine/db_machdep.h>
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#include <ddb/db_access.h>
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#include <ddb/db_command.h>
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#include <ddb/db_interface.h>
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#include <ddb/db_lex.h>
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#include <ddb/db_output.h>
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#include <ddb/db_sym.h>
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#include <ddb/db_extern.h>
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#ifdef KGDB
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#include <sys/kgdb.h>
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#endif
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void
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db_kill_proc(db_expr_t addr, int haddr, db_expr_t count, char *modif)
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{
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struct proc *p;
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db_expr_t pid, sig;
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int t;
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/* What pid? */
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if (!db_expression(&pid)) {
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db_error("pid?\n");
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/*NOTREACHED*/
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}
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/* What sig? */
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t = db_read_token();
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if (t == tCOMMA) {
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if (!db_expression(&sig)) {
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db_error("sig?\n");
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/*NOTREACHED*/
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}
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} else {
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db_unread_token(t);
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sig = 15;
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}
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if (db_read_token() != tEOL) {
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db_error("?\n");
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/*NOTREACHED*/
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}
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p = pfind((pid_t)pid);
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if (p == NULL) {
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db_error("no such proc\n");
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/*NOTREACHED*/
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}
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psignal(p, (int)sig);
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}
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#ifdef KGDB
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void
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db_kgdb_cmd(db_expr_t addr, int haddr, db_expr_t count, char *modif)
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{
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kgdb_active++;
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kgdb_trap(db_trap_type, DDB_REGS);
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kgdb_active--;
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}
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#endif
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void
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db_show_all_procs(db_expr_t addr, int haddr, db_expr_t count, char *modif)
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{
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int i;
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char *mode;
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struct proc *p, *pp, *cp;
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struct lwp *l, *cl;
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struct timeval tv[2];
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const struct proclist_desc *pd;
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if (modif[0] == 0)
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modif[0] = 'n'; /* default == normal mode */
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mode = strchr("mawln", modif[0]);
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if (mode == NULL || *mode == 'm') {
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db_printf("usage: show all procs [/a] [/n] [/w]\n");
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db_printf("\t/a == show process address info\n");
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db_printf("\t/l == show LWP info\n");
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db_printf("\t/n == show normal process info [default]\n");
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db_printf("\t/w == show process wait/emul info\n");
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return;
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}
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switch (*mode) {
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case 'a':
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db_printf(" PID %10s %18s %18s %18s\n",
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"COMMAND", "STRUCT PROC *", "UAREA *", "VMSPACE/VM_MAP");
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break;
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case 'l':
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db_printf(" PID %4s S %9s %18s %18s %-12s\n",
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"LID", "FLAGS", "STRUCT LWP *", "UAREA *", "WAIT");
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break;
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case 'n':
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db_printf(" PID %8s %8s %10s S %7s %4s %16s %7s\n",
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"PPID", "PGRP", "UID", "FLAGS", "LWPS", "COMMAND", "WAIT");
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break;
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case 'w':
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db_printf(" PID %10s %8s %4s %5s %5s %-12s%s\n",
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"COMMAND", "EMUL", "PRI", "UTIME", "STIME",
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"WAIT-MSG", "WAIT-CHANNEL");
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break;
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}
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/* XXX LOCKING XXX */
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pd = proclists;
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cp = curproc;
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cl = curlwp;
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for (pd = proclists; pd->pd_list != NULL; pd++) {
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LIST_FOREACH(p, pd->pd_list, p_list) {
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pp = p->p_pptr;
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if (p->p_stat == 0) {
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continue;
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}
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l = LIST_FIRST(&p->p_lwps);
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db_printf("%c%-10d", " >"[cp == p], p->p_pid);
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switch (*mode) {
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case 'a':
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db_printf("%10.10s %18p %18p %18p\n",
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p->p_comm, p,
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l != NULL ? l->l_addr : 0,
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p->p_vmspace);
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break;
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case 'l':
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while (l != NULL) {
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db_printf("%c%4d %d %#9x %18p %18p %s\n",
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" >"[cl == l], l->l_lid,
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l->l_stat, l->l_flag, l,
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l->l_addr,
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(l->l_wchan && l->l_wmesg) ?
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l->l_wmesg : "");
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l = LIST_NEXT(l, l_sibling);
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if (l)
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db_printf("%11s","");
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}
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break;
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case 'n':
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db_printf("%8d %8d %10d %d %#7x %4d %16s %7.7s\n",
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pp ? pp->p_pid : -1, p->p_pgrp->pg_id,
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p->p_cred->p_ruid, p->p_stat, p->p_flag,
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p->p_nlwps, p->p_comm,
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(p->p_nlwps != 1) ? "*" : (
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(l->l_wchan && l->l_wmesg) ?
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l->l_wmesg : ""));
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break;
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case 'w':
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db_printf("%10s %8s %4d", p->p_comm,
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p->p_emul->e_name,
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(l != NULL) ? l->l_priority : -1);
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calcru(p, &tv[0], &tv[1], NULL);
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for (i = 0; i < 2; ++i) {
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db_printf("%4ld.%1ld",
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(long)tv[i].tv_sec,
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(long)tv[i].tv_usec/100000);
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}
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if (p->p_nlwps == 1) {
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if (l->l_wchan && l->l_wmesg) {
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db_printf(" %-12s", l->l_wmesg);
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db_printsym(
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(db_expr_t)(intptr_t)l->l_wchan,
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DB_STGY_XTRN, db_printf);
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} } else {
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db_printf(" * ");
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}
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db_printf("\n");
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break;
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}
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}
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}
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}
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void
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db_dmesg(db_expr_t addr, int haddr, db_expr_t count, char *modif)
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{
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struct kern_msgbuf *mbp;
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db_expr_t print;
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int ch, newl, skip, i;
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char *p, *bufdata;
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if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) {
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db_printf("message buffer not available\n");
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return;
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}
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mbp = msgbufp;
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bufdata = &mbp->msg_bufc[0];
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if (haddr && addr < mbp->msg_bufs)
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print = addr;
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else
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print = mbp->msg_bufs;
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for (newl = skip = i = 0, p = bufdata + mbp->msg_bufx;
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i < mbp->msg_bufs; i++, p++) {
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if (p == bufdata + mbp->msg_bufs)
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p = bufdata;
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if (i < mbp->msg_bufs - print)
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continue;
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ch = *p;
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/* Skip "\n<.*>" syslog sequences. */
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if (skip) {
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if (ch == '>')
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newl = skip = 0;
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continue;
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}
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if (newl && ch == '<') {
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skip = 1;
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continue;
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}
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if (ch == '\0')
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continue;
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newl = ch == '\n';
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db_printf("%c", ch);
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}
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if (!newl)
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db_printf("\n");
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}
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#ifdef __HAVE_BIGENDIAN_BITOPS
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#define RQMASK(n) (0x80000000 >> (n))
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#else
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#define RQMASK(n) (0x00000001 << (n))
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#endif
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void
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db_show_sched_qs(db_expr_t addr, int haddr, db_expr_t count, char *modif)
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{
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struct prochd *ph;
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struct lwp *l;
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int i, first;
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for (i = 0; i < RUNQUE_NQS; i++)
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{
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first = 1;
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ph = &sched_qs[i];
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for (l = ph->ph_link; l != (struct lwp *)ph; l = l->l_forw) {
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if (first) {
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db_printf("%c%d",
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(sched_whichqs & RQMASK(i))
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? ' ' : '!', i);
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first = 0;
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}
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db_printf("\t%d.%d (%s)\n", l->l_proc->p_pid,
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l->l_lid, l->l_proc->p_comm);
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}
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}
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}
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