modules/md/walk_nm.c

	walk_nm.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (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 2003 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */
#pragma ident   "%Z%%M% %I% %E% SMI"

#include "mdinclude.h"

/*
 * walk the namespace
 */
/* ARGSUSED */
int
namespace_walk_init(mdb_walk_state_t *wsp)
{
    uintptr_t   addr;

    snarf_sets();
    wsp->walk_data = mdb_alloc(sizeof (int), UM_SLEEP);
    /* cycle through sets, start with set 0 */
    *((int *)wsp->walk_data) = 0;
    addr = (uintptr_t)mdset[0].s_nm;

    wsp->walk_addr = addr;
    return (WALK_NEXT);
}

int
namespace_walk_step(mdb_walk_state_t *wsp)
{
    int status;
    struct nm_header_hdr     hdr;

    if (wsp->walk_addr == NULL) {
        if (*((int *)wsp->walk_data) < md_nsets) {
            *((int *)wsp->walk_data) += 1;
            wsp->walk_addr =
                (uintptr_t)mdset[*((int *)wsp->walk_data)].s_nm;
            if (wsp->walk_addr == NULL)
                return (WALK_NEXT);
        } else {
            return (WALK_DONE);
        }
    }

    mdb_printf("Namespace for set number %d\n", *((int *)wsp->walk_data));
    if (mdb_vread(&hdr, sizeof (struct nm_header_hdr), wsp->walk_addr) !=
        sizeof (struct nm_header_hdr)) {
        mdb_warn("failed to read nm_header_hdr at %p",
            wsp->walk_addr);
        return (WALK_DONE);
    }


    status = wsp->walk_callback(wsp->walk_addr, (&hdr)->hh_header,
        wsp->walk_cbdata);

    *((int *)wsp->walk_data) += 1;
    wsp->walk_addr = (uintptr_t)mdset[*((int *)wsp->walk_data)].s_nm;
    return (status);
}

void
namespace_walk_fini(mdb_walk_state_t *wsp)
{
    mdb_free(wsp->walk_data, sizeof (int));
}