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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 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Display group information and walk all elements of a group
*/
#include "group.h"
#include <mdb/mdb_modapi.h>
#include <sys/group.h>
/*
* Display group information
*/
/* ARGSUSED */
int
group(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
{
group_t group;
int opt_q = 0; /* display only address. */
/* Should provide an address */
if (!(flags & DCMD_ADDRSPEC))
return (DCMD_USAGE);
if (mdb_getopts(argc, argv,
'q', MDB_OPT_SETBITS, TRUE, &opt_q,
NULL) != argc)
return (DCMD_USAGE);
if (flags & DCMD_PIPE_OUT)
opt_q = B_TRUE;
if (DCMD_HDRSPEC(flags) && !opt_q) {
mdb_printf("%?s %6s %9s %?s\n",
"ADDR",
"SIZE",
"CAPACITY",
"SET");
}
if (mdb_vread(&group, sizeof (struct group), addr) == -1) {
mdb_warn("unable to read 'group' at %p", addr);
return (DCMD_ERR);
}
if (opt_q) {
mdb_printf("%0?p\n", addr);
return (DCMD_OK);
}
mdb_printf("%?p %6d %9d %?p\n",
addr, group.grp_size, group.grp_capacity, group.grp_set);
return (DCMD_OK);
}
/*
* Walk all elements in the group set.
*/
typedef struct group_walk {
uintptr_t *gw_set;
int gw_size;
int gw_pos;
int gw_initialized;
} group_walk_t;
/*
* Initialize the walk structure with the copy of a group set, its size and the
* initial pointer position.
*/
int
group_walk_init(mdb_walk_state_t *wsp)
{
group_walk_t *gw;
group_t group;
gw = mdb_alloc(sizeof (group_walk_t), UM_SLEEP | UM_GC);
if (mdb_vread(&group, sizeof (struct group), wsp->walk_addr) == -1) {
mdb_warn("couldn't read 'group' at %p", wsp->walk_addr);
return (WALK_ERR);
}
gw->gw_size = group.grp_size;
gw->gw_initialized = 0;
gw->gw_pos = 0;
if (gw->gw_size < 0) {
mdb_warn("invalid group at %p", wsp->walk_addr);
return (WALK_ERR);
}
if (gw->gw_size == 0)
return (WALK_DONE);
/*
* Allocate space for the set and copy all set entries.
*/
gw->gw_set = mdb_alloc(group.grp_size * sizeof (uintptr_t),
UM_SLEEP | UM_GC);
if (mdb_vread(gw->gw_set, group.grp_size * sizeof (uintptr_t),
(uintptr_t)group.grp_set) == -1) {
mdb_warn("couldn't read 'group set' at %p", group.grp_set);
return (WALK_ERR);
}
wsp->walk_data = gw;
wsp->walk_addr = gw->gw_set[0];
gw->gw_pos = 0;
return (WALK_NEXT);
}
/*
* Print element of the set and advance the pointer.
*/
int
group_walk_step(mdb_walk_state_t *wsp)
{
group_walk_t *gw = (group_walk_t *)wsp->walk_data;
int status;
/*
* Already visited all valid elements, nothing else to do.
*/
if (gw->gw_size < 0)
return (WALK_DONE);
/*
* Print non-NULL elements
*/
status = wsp->walk_addr == NULL ?
WALK_NEXT :
wsp->walk_callback(wsp->walk_addr, wsp->walk_data,
wsp->walk_cbdata);
/*
* Adjust walk_addr to point to the next element
*/
gw->gw_size--;
if (gw->gw_size > 0)
wsp->walk_addr = gw->gw_set[++gw->gw_pos];
else
status = WALK_DONE;
return (status);
}
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