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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <sys/types.h>
#include <sys/rwlock.h>
#include <mdb/mdb_modapi.h>
#include <sys/queue.h>
#include <inet/ip.h>
#include <sys/hook.h>
#include <sys/hook_impl.h>
#define MAX_LENGTH 64
/*
* List pfhooks hook list information.
*/
/*ARGSUSED*/
int
hooklist(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
hook_event_int_t hr;
hook_int_t hl, *hlp;
char hrstr[MAX_LENGTH];
GElf_Sym sym;
char buf[MDB_SYM_NAMLEN + 1];
char *hintname;
hook_t *h;
if (argc)
return (DCMD_USAGE);
if (mdb_vread((void *)&hr, sizeof (hr), (uintptr_t)addr) == -1) {
mdb_warn("couldn't read hook register at %p", addr);
return (DCMD_ERR);
}
mdb_printf("%<u>%?s %8s %20s %4s %24s %24s%</u>\n",
"ADDR", "FLAG", "FUNC", "HINT", "NAME", "HINTVALUE");
h = &hl.hi_hook;
hlp = TAILQ_FIRST(&hr.hei_head);
while (hlp) {
if (mdb_vread((void *)&hl, sizeof (hl),
(uintptr_t)hlp) == -1) {
mdb_warn("couldn't read hook list at %p",
hlp);
return (DCMD_ERR);
}
if (!h->h_name) {
mdb_warn("hook list at %p has null role", h);
return (DCMD_ERR);
}
if (mdb_readstr((char *)hrstr, sizeof (hrstr),
(uintptr_t)h->h_name) == -1) {
mdb_warn("couldn't read list role at %p", h->h_name);
return (DCMD_ERR);
}
switch (h->h_hint) {
case HH_BEFORE :
case HH_AFTER :
hintname = h->h_hintvalue ?
(char *)h->h_hintvalue : "";
break;
default :
hintname = "";
break;
}
if (mdb_lookup_by_addr((uintptr_t)h->h_func,
MDB_SYM_EXACT, buf, sizeof (buf), &sym) == -1)
mdb_printf("%0?p %8x %0?p %4d %24s %24s\n",
hlp, h->h_flags, h->h_func,
h->h_hint, hrstr, hintname);
else
mdb_printf("%0?p %8x %20s %4d %24s %24s\n",
hlp, h->h_flags, buf,
h->h_hint, hrstr, hintname);
hlp = TAILQ_NEXT(&hl, hi_entry);
}
return (DCMD_OK);
}
/*
* List pfhooks event information.
* List the hooks information in verbose mode as well.
*/
/*ARGSUSED*/
int
hookeventlist(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
hook_family_int_t hf;
hook_event_int_t hr, *hrp;
hook_event_t hp;
char hprstr[MAX_LENGTH];
if (argc)
return (DCMD_USAGE);
if (mdb_vread((void *)&hf, sizeof (hf), (uintptr_t)addr) == -1) {
mdb_warn("couldn't read hook family at %p", addr);
return (DCMD_ERR);
}
mdb_printf("%<u>%?s %10s %20s%</u>\n", "ADDR", "FLAG", "NAME");
hrp = SLIST_FIRST(&hf.hfi_head);
while (hrp) {
if (mdb_vread((void *)&hr, sizeof (hr), (uintptr_t)hrp) == -1) {
mdb_warn("couldn't read hook register at %p", hrp);
return (DCMD_ERR);
}
if (!hr.hei_event) {
mdb_warn("hook register at %p has no hook provider",
hrp);
return (DCMD_ERR);
}
if (mdb_vread((void *)&hp, sizeof (hp),
(uintptr_t)hr.hei_event) == -1) {
mdb_warn("hook provider at %p has null role",
hr.hei_event);
return (DCMD_ERR);
}
if (!hp.he_name) {
mdb_warn("hook provider at %p has null role",
hr.hei_event);
return (DCMD_ERR);
}
if (mdb_readstr((char *)hprstr, sizeof (hprstr),
(uintptr_t)hp.he_name) == -1) {
mdb_warn("couldn't read provider role at %p",
hp.he_name);
return (DCMD_ERR);
}
mdb_printf("%0?p %10x %20s\n", hrp, hp.he_flags, hprstr);
hrp = SLIST_NEXT(&hr, hei_entry);
}
return (DCMD_OK);
}
/*
* List pfhooks family information.
*/
/*ARGSUSED*/
int
hookrootlist(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
struct hook_stack *hks;
hook_family_int_head_t hfh;
hook_family_int_t hf, *hfp;
char hrrstr[MAX_LENGTH];
if (argc)
return (DCMD_USAGE);
if (mdb_vread((void *)&hks, sizeof (hks),
(uintptr_t)(addr + OFFSETOF(netstack_t, netstack_hook))) == -1) {
mdb_warn("couldn't read netstack_hook");
return (DCMD_ERR);
}
if (mdb_vread((void *)&hfh, sizeof (hfh), (uintptr_t)((uintptr_t)hks +
OFFSETOF(hook_stack_t, hks_familylist))) == -1) {
mdb_warn("couldn't read hook family head");
return (DCMD_ERR);
}
mdb_printf("%<u>%?s %10s%</u>\n", "ADDR", "FAMILY");
hfp = SLIST_FIRST(&hfh);
while (hfp) {
if (mdb_vread((void *)&hf, sizeof (hf), (uintptr_t)hfp) == -1) {
mdb_warn("couldn't read hook family at %p", hfp);
return (DCMD_ERR);
}
if (!hf.hfi_family.hf_name) {
mdb_warn("hook root at %p has null role",
hf.hfi_family);
return (DCMD_ERR);
}
if (mdb_readstr((char *)hrrstr, sizeof (hrrstr),
(uintptr_t)hf.hfi_family.hf_name) == -1) {
mdb_warn("couldn't read root role at %p",
hf.hfi_family.hf_name);
return (DCMD_ERR);
}
mdb_printf("%0?p %10s\n", hfp, hrrstr);
hfp = SLIST_NEXT(&hf, hfi_entry);
}
return (DCMD_OK);
}
static int
hookevent_stack_walk_init(mdb_walk_state_t *wsp)
{
hook_family_int_t hf;
if (wsp->walk_addr == 0) {
mdb_warn("global walk not supported\n");
return (WALK_ERR);
}
if (mdb_vread((void *)&hf, sizeof (hf),
(uintptr_t)wsp->walk_addr) == -1) {
mdb_warn("couldn't read hook family at %p", wsp->walk_addr);
return (DCMD_ERR);
}
wsp->walk_addr = (uintptr_t)SLIST_FIRST(&hf.hfi_head);
return (wsp->walk_callback(wsp->walk_addr, wsp->walk_data,
wsp->walk_cbdata));
}
static int
hookevent_stack_walk_step(mdb_walk_state_t *wsp)
{
hook_event_int_t hr;
if (mdb_vread((void *)&hr, sizeof (hr),
(uintptr_t)wsp->walk_addr) == -1) {
mdb_warn("couldn't read hook event at %p", wsp->walk_addr);
return (DCMD_ERR);
}
wsp->walk_addr = (uintptr_t)SLIST_NEXT(&hr, hei_entry);
if (wsp->walk_addr == 0)
return (WALK_DONE);
return (wsp->walk_callback(wsp->walk_addr, wsp->walk_data,
wsp->walk_cbdata));
}
static const mdb_dcmd_t dcmds[] = {
{ "hookrootlist", "", "display hook family information", hookrootlist },
{ "hookeventlist", "", "display hook event information",
hookeventlist, NULL },
{ "hooklist", "", "display hooks", hooklist },
{ NULL }
};
static const mdb_walker_t walkers[] = {
{ "hookevent_stack", "walk list of hooks",
hookevent_stack_walk_init, hookevent_stack_walk_step, NULL },
{ NULL }
};
static const mdb_modinfo_t modinfo = { MDB_API_VERSION, dcmds, walkers };
const mdb_modinfo_t *
_mdb_init(void)
{
return (&modinfo);
}
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