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/*
* 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 (c) 1994, by Sun Microsytems, Inc.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include "libtnf.h"
/*
*
*/
static struct slotinfo *get_slotinfo(tnf_datum_t);
static struct slot * get_slot_named(struct slotinfo *, char *);
static struct slot * get_slot_indexed(struct slotinfo *, unsigned);
static tnf_datum_t get_slot(tnf_datum_t, struct slot *);
/*
*
*/
void
_tnf_check_slots(tnf_datum_t datum)
{
struct taginfo *info;
CHECK_DATUM(datum);
info = DATUM_INFO(datum);
/* Must be an aggregate */
if (!(INFO_STRUCT(info) || INFO_ARRAY(info)))
_tnf_error(DATUM_TNF(datum), TNF_ERR_TYPEMISMATCH);
}
/*
* Helpers
*/
static struct slotinfo *
get_slotinfo(tnf_datum_t datum)
{
struct taginfo *info, *base_info;
info = DATUM_INFO(datum);
base_info = INFO_DERIVED(info)? info->base: info;
/* XXX base must not be a scalar tag */
if (INFO_SCALAR(base_info))
_tnf_error(DATUM_TNF(datum), TNF_ERR_BADTNF);
return (base_info->slotinfo);
}
static struct slot *
get_slot_indexed(struct slotinfo *slotinfo, unsigned index)
{
unsigned count;
count = slotinfo->slot_count;
if (index >= count)
return (NULL);
else
return (&slotinfo->slots[index]);
}
static struct slot *
get_slot_named(struct slotinfo *slotinfo, char *name)
{
unsigned count, i;
count = slotinfo->slot_count;
for (i = 0; i < count; i++)
if (strcmp(name, slotinfo->slots[i].slot_name) == 0)
return (&slotinfo->slots[i]);
return (NULL);
}
static tnf_datum_t
get_slot(tnf_datum_t datum, struct slot *slot)
{
if (slot == NULL) {
_tnf_error(DATUM_TNF(datum), TNF_ERR_BADSLOT); /* XXX */
return (TNF_DATUM_NULL);
} else if (INFO_TAGGED(slot->slot_type)) {
TNF *tnf;
tnf_ref32_t *rec;
tnf = DATUM_TNF(datum);
/* LINTED pointer cast may result in improper alignment */
rec = _GET_REF32(tnf, (tnf_ref32_t *)
(DATUM_VAL(datum) + slot->slot_offset));
/* NULL slots are allowed */
return ((rec == TNF_NULL)? TNF_DATUM_NULL :
RECORD_DATUM(tnf, rec));
} else /* inline */
return DATUM(slot->slot_type,
DATUM_VAL(datum) + slot->slot_offset);
}
/*
*
*/
unsigned
tnf_get_slot_count(tnf_datum_t datum)
{
struct slotinfo *slotinfo;
CHECK_SLOTS(datum);
slotinfo = get_slotinfo(datum);
return (slotinfo->slot_count);
}
/*
*
*/
unsigned
tnf_get_slot_index(tnf_datum_t datum, char *name)
{
struct slotinfo *slotinfo;
struct slot *slot;
CHECK_SLOTS(datum);
slotinfo = get_slotinfo(datum);
slot = get_slot_named(slotinfo, name);
if (slot == NULL) {
_tnf_error(DATUM_TNF(datum), TNF_ERR_BADSLOT); /* XXX */
return (((unsigned)-1));
} else
return (((char *)slot - (char *)&slotinfo->slots[0])
/ sizeof (struct slot));
}
/*
*
*/
char *
tnf_get_slot_name(tnf_datum_t datum, unsigned index)
{
struct slotinfo *slotinfo;
struct slot *slot;
CHECK_SLOTS(datum);
slotinfo = get_slotinfo(datum);
slot = get_slot_indexed(slotinfo, index);
if (slot == NULL) {
_tnf_error(DATUM_TNF(datum), TNF_ERR_BADSLOT); /* XXX */
return ((char *)NULL);
} else
return (slot->slot_name);
}
/*
*
*/
tnf_datum_t
tnf_get_slot_named(tnf_datum_t datum, char *name)
{
struct slotinfo *slotinfo;
struct slot *slot;
CHECK_SLOTS(datum);
slotinfo = get_slotinfo(datum);
slot = get_slot_named(slotinfo, name);
return (get_slot(datum, slot));
}
/*
*
*/
tnf_datum_t
tnf_get_slot_indexed(tnf_datum_t datum, unsigned index)
{
struct slotinfo *slotinfo;
struct slot *slot;
CHECK_SLOTS(datum);
slotinfo = get_slotinfo(datum);
slot = get_slot_indexed(slotinfo, index);
return (get_slot(datum, slot));
}
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