17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*7257d1b4Sraf * Common Development and Distribution License (the "License").
6*7257d1b4Sraf * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate *
87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate * and limitations under the License.
127c478bd9Sstevel@tonic-gate *
137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate *
197c478bd9Sstevel@tonic-gate * CDDL HEADER END
207c478bd9Sstevel@tonic-gate */
217c478bd9Sstevel@tonic-gate
227c478bd9Sstevel@tonic-gate /*
23*7257d1b4Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24*7257d1b4Sraf * Use is subject to license terms.
257c478bd9Sstevel@tonic-gate */
267c478bd9Sstevel@tonic-gate
27*7257d1b4Sraf /* Copyright (c) 1988 AT&T */
28*7257d1b4Sraf /* All Rights Reserved */
297c478bd9Sstevel@tonic-gate
307c478bd9Sstevel@tonic-gate #include "libelf.h"
317c478bd9Sstevel@tonic-gate #include "decl.h"
327c478bd9Sstevel@tonic-gate #include "msg.h"
337c478bd9Sstevel@tonic-gate
347c478bd9Sstevel@tonic-gate
357c478bd9Sstevel@tonic-gate Elf_Data *
elf_newdata(Elf_Scn * s)367c478bd9Sstevel@tonic-gate elf_newdata(Elf_Scn * s)
377c478bd9Sstevel@tonic-gate {
387c478bd9Sstevel@tonic-gate Dnode * d;
397c478bd9Sstevel@tonic-gate Elf_Data * rc;
407c478bd9Sstevel@tonic-gate Elf * elf;
417c478bd9Sstevel@tonic-gate unsigned work;
427c478bd9Sstevel@tonic-gate
437c478bd9Sstevel@tonic-gate if (s == 0)
447c478bd9Sstevel@tonic-gate return (0);
457c478bd9Sstevel@tonic-gate elf = s->s_elf;
467c478bd9Sstevel@tonic-gate READLOCKS(elf, s)
477c478bd9Sstevel@tonic-gate if (s->s_index == SHN_UNDEF) {
487c478bd9Sstevel@tonic-gate _elf_seterr(EREQ_SCNNULL, 0);
497c478bd9Sstevel@tonic-gate READUNLOCKS(elf, s)
507c478bd9Sstevel@tonic-gate return (0);
517c478bd9Sstevel@tonic-gate }
527c478bd9Sstevel@tonic-gate
537c478bd9Sstevel@tonic-gate if ((s->s_myflags & SF_READY) == 0) {
547c478bd9Sstevel@tonic-gate UPGRADELOCKS(elf, s)
557c478bd9Sstevel@tonic-gate /*
567c478bd9Sstevel@tonic-gate * re-confirm that another 'thread' hasn't come along
577c478bd9Sstevel@tonic-gate * and cooked this section while the locks were
587c478bd9Sstevel@tonic-gate * obtained.
597c478bd9Sstevel@tonic-gate */
607c478bd9Sstevel@tonic-gate if ((s->s_myflags & SF_READY) == 0)
617c478bd9Sstevel@tonic-gate (void) _elf_cookscn(s);
627c478bd9Sstevel@tonic-gate DOWNGRADELOCKS(elf, s)
637c478bd9Sstevel@tonic-gate }
647c478bd9Sstevel@tonic-gate
657c478bd9Sstevel@tonic-gate /*
667c478bd9Sstevel@tonic-gate * If this is the first new node, use the one allocated
677c478bd9Sstevel@tonic-gate * in the scn itself. Update data buffer in both cases.
687c478bd9Sstevel@tonic-gate */
697c478bd9Sstevel@tonic-gate ELFACCESSDATA(work, _elf_work)
707c478bd9Sstevel@tonic-gate if (s->s_hdnode == 0) {
717c478bd9Sstevel@tonic-gate s->s_dnode.db_uflags |= ELF_F_DIRTY;
727c478bd9Sstevel@tonic-gate s->s_dnode.db_myflags |= DBF_READY;
737c478bd9Sstevel@tonic-gate s->s_hdnode = &s->s_dnode;
747c478bd9Sstevel@tonic-gate s->s_tlnode = &s->s_dnode;
757c478bd9Sstevel@tonic-gate s->s_dnode.db_scn = s;
767c478bd9Sstevel@tonic-gate s->s_dnode.db_data.d_version = work;
777c478bd9Sstevel@tonic-gate rc = &s->s_dnode.db_data;
787c478bd9Sstevel@tonic-gate READUNLOCKS(elf, s)
797c478bd9Sstevel@tonic-gate return (rc);
807c478bd9Sstevel@tonic-gate }
817c478bd9Sstevel@tonic-gate if ((d = _elf_dnode()) == 0) {
827c478bd9Sstevel@tonic-gate READUNLOCKS(elf, s)
837c478bd9Sstevel@tonic-gate return (0);
847c478bd9Sstevel@tonic-gate }
857c478bd9Sstevel@tonic-gate d->db_data.d_version = work;
867c478bd9Sstevel@tonic-gate d->db_scn = s;
877c478bd9Sstevel@tonic-gate d->db_uflags |= ELF_F_DIRTY;
887c478bd9Sstevel@tonic-gate d->db_myflags |= DBF_READY;
897c478bd9Sstevel@tonic-gate s->s_tlnode->db_next = d;
907c478bd9Sstevel@tonic-gate s->s_tlnode = d;
917c478bd9Sstevel@tonic-gate rc = &d->db_data;
927c478bd9Sstevel@tonic-gate READUNLOCKS(elf, s)
937c478bd9Sstevel@tonic-gate return (rc);
947c478bd9Sstevel@tonic-gate }
95