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NetBSD/sys/ddb/db_xxx.c

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/* $NetBSD: db_xxx.c,v 1.52 2008/10/03 14:52:11 rmind Exp $ */
/*
* Copyright (c) 1982, 1986, 1989, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: kern_proc.c 8.4 (Berkeley) 1/4/94
*/
/*
* Miscellaneous DDB functions that are intimate (xxx) with various
* data structures and functions used by the kernel (proc, callout).
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: db_xxx.c,v 1.52 2008/10/03 14:52:11 rmind Exp $");
#include "opt_kgdb.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/msgbuf.h>
#include <sys/callout.h>
#include <sys/file.h>
#include <sys/filedesc.h>
#include <sys/lockdebug.h>
#include <sys/signalvar.h>
#include <sys/resourcevar.h>
#include <sys/pool.h>
#include <sys/kauth.h>
#include <sys/mqueue.h>
#include <sys/vnode.h>
#include <machine/db_machdep.h>
#include <ddb/db_access.h>
#include <ddb/db_command.h>
#include <ddb/db_interface.h>
#include <ddb/db_lex.h>
#include <ddb/db_output.h>
#include <ddb/db_sym.h>
#include <ddb/db_extern.h>
#ifdef KGDB
#include <sys/kgdb.h>
#endif
void
db_kill_proc(db_expr_t addr, bool haddr,
db_expr_t count, const char *modif)
{
struct proc *p;
db_expr_t pid, sig;
int t;
/* What pid? */
if (!db_expression(&pid)) {
db_error("pid?\n");
/*NOTREACHED*/
}
/* What sig? */
t = db_read_token();
if (t == tCOMMA) {
if (!db_expression(&sig)) {
db_error("sig?\n");
/*NOTREACHED*/
}
} else {
db_unread_token(t);
sig = 15;
}
if (db_read_token() != tEOL) {
db_error("?\n");
/*NOTREACHED*/
}
p = pfind((pid_t)pid);
if (p == NULL) {
db_error("no such proc\n");
/*NOTREACHED*/
}
psignal(p, (int)sig);
}
#ifdef KGDB
void
db_kgdb_cmd(db_expr_t addr, bool haddr,
db_expr_t count, const char *modif)
{
kgdb_active++;
kgdb_trap(db_trap_type, DDB_REGS);
kgdb_active--;
}
#endif
void
db_show_files_cmd(db_expr_t addr, bool haddr,
db_expr_t count, const char *modif)
{
struct proc *p;
int i;
filedesc_t *fdp;
fdfile_t *ff;
file_t *fp;
struct vnode *vn;
bool full = false;
if (modif[0] == 'f')
full = true;
p = (struct proc *) (uintptr_t) addr;
fdp = p->p_fd;
for (i = 0; i < fdp->fd_nfiles; i++) {
if ((ff = fdp->fd_ofiles[i]) == NULL)
continue;
fp = ff->ff_file;
/* Only look at vnodes... */
if ((fp != NULL) && (fp->f_type == DTYPE_VNODE)) {
if (fp->f_data != NULL) {
vn = (struct vnode *) fp->f_data;
vfs_vnode_print(vn, full, db_printf);
#ifdef LOCKDEBUG
db_printf("\nv_uobj.vmobjlock lock details:\n");
lockdebug_lock_print(&(vn->v_uobj.vmobjlock),
db_printf);
db_printf("\n");
#endif
}
}
}
}
void
db_show_aio_jobs(db_expr_t addr, bool haddr,
db_expr_t count, const char *modif)
{
aio_print_jobs(db_printf);
}
void
db_show_mqueue_cmd(db_expr_t addr, bool haddr,
db_expr_t count, const char *modif)
{
mqueue_print_list(db_printf);
}
void
db_show_all_procs(db_expr_t addr, bool haddr,
db_expr_t count, const char *modif)
{
const char *mode;
struct proc *p, *pp, *cp;
struct lwp *l, *cl;
const struct proclist_desc *pd;
char db_nbuf[MAXCOMLEN + 1];
if (modif[0] == 0)
mode = "n"; /* default == normal mode */
else
mode = strchr("mawln", modif[0]);
if (mode == NULL || *mode == 'm') {
db_printf("usage: show all procs [/a] [/l] [/n] [/w]\n");
db_printf("\t/a == show process address info\n");
db_printf("\t/l == show LWP info\n");
db_printf("\t/n == show normal process info [default]\n");
db_printf("\t/w == show process wait/emul info\n");
return;
}
switch (*mode) {
case 'a':
db_printf(" PID %10s %18s %18s %18s\n",
"COMMAND", "STRUCT PROC *", "UAREA *", "VMSPACE/VM_MAP");
break;
case 'l':
db_printf(" PID %4s S %9s %18s %18s %-8s\n",
"LID", "FLAGS", "STRUCT LWP *", "NAME", "WAIT");
break;
case 'n':
db_printf(" PID %8s %8s %10s S %7s %4s %16s %7s\n",
"PPID", "PGRP", "UID", "FLAGS", "LWPS", "COMMAND", "WAIT");
break;
case 'w':
db_printf(" PID %4s %16s %8s %4s %-12s%s\n",
"LID", "COMMAND", "EMUL", "PRI", "WAIT-MSG",
"WAIT-CHANNEL");
break;
}
/* XXX LOCKING XXX */
pd = proclists;
cp = curproc;
cl = curlwp;
for (pd = proclists; pd->pd_list != NULL; pd++) {
LIST_FOREACH(p, pd->pd_list, p_list) {
pp = p->p_pptr;
if (p->p_stat == 0) {
continue;
}
l = LIST_FIRST(&p->p_lwps);
db_printf("%c%-10d", (cp == p ? '>' : ' '), p->p_pid);
switch (*mode) {
case 'a':
db_printf("%10.10s %18lx %18lx %18lx\n",
p->p_comm, (long)p,
(long)(l != NULL ? l->l_addr : 0),
(long)p->p_vmspace);
break;
case 'l':
while (l != NULL) {
if (l->l_name != NULL) {
snprintf(db_nbuf,
sizeof(db_nbuf),
"%s", l->l_name);
} else
snprintf(db_nbuf,
sizeof(db_nbuf),
"%s", p->p_comm);
db_printf("%c%4d %d %9x %18lx %18s %-8s\n",
(cl == l ? '>' : ' '), l->l_lid,
l->l_stat, l->l_flag, (long)l,
db_nbuf,
(l->l_wchan && l->l_wmesg) ?
l->l_wmesg : "");
l = LIST_NEXT(l, l_sibling);
if (l)
db_printf("%11s","");
}
break;
case 'n':
db_printf("%8d %8d %10d %d %#7x %4d %16s %7.7s\n",
pp ? pp->p_pid : -1, p->p_pgrp->pg_id,
kauth_cred_getuid(p->p_cred), p->p_stat, p->p_flag,
p->p_nlwps, p->p_comm,
(p->p_nlwps != 1) ? "*" : (
(l->l_wchan && l->l_wmesg) ?
l->l_wmesg : ""));
break;
case 'w':
while (l != NULL) {
db_printf(
"%4d %16s %8s %4d %-12s %-18lx\n",
l->l_lid, p->p_comm,
p->p_emul->e_name, l->l_priority,
(l->l_wchan && l->l_wmesg) ?
l->l_wmesg : "", (long)l->l_wchan);
l = LIST_NEXT(l, l_sibling);
if (l != NULL) {
db_printf("%c%-10d", (cp == p ?
'>' : ' '), p->p_pid);
}
}
break;
}
}
}
}
void
db_show_all_pools(db_expr_t addr, bool haddr,
db_expr_t count, const char *modif)
{
pool_printall(modif, db_printf);
}
void
db_dmesg(db_expr_t addr, bool haddr, db_expr_t count,
const char *modif)
{
struct kern_msgbuf *mbp;
db_expr_t print;
int ch, newl, skip, i;
char *p, *bufdata;
if (!msgbufenabled || msgbufp->msg_magic != MSG_MAGIC) {
db_printf("message buffer not available\n");
return;
}
mbp = msgbufp;
bufdata = &mbp->msg_bufc[0];
if (haddr && addr < mbp->msg_bufs)
print = addr;
else
print = mbp->msg_bufs;
for (newl = skip = i = 0, p = bufdata + mbp->msg_bufx;
i < mbp->msg_bufs; i++, p++) {
if (p == bufdata + mbp->msg_bufs)
p = bufdata;
if (i < mbp->msg_bufs - print)
continue;
ch = *p;
/* Skip "\n<.*>" syslog sequences. */
if (skip) {
if (ch == '>')
newl = skip = 0;
continue;
}
if (newl && ch == '<') {
skip = 1;
continue;
}
if (ch == '\0')
continue;
newl = ch == '\n';
db_printf("%c", ch);
}
if (!newl)
db_printf("\n");
}
void
db_show_sched_qs(db_expr_t addr, bool haddr,
db_expr_t count, const char *modif)
{
sched_print_runqueue(db_printf);
}
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