getident.c   [plain text]

/*
 * 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) 1988 AT&T	*/
/*	  All Rights Reserved  	*/

/*
 * Copyright (c) 1998 by Sun Microsystems, Inc.
 * All rights reserved.
 */

#pragma ident	"@(#)getident.c	1.9	05/06/08 SMI" 	/* SVr4.0 1.8	*/

// XXX_PRAGMA_WEAK #pragma weak	elf_getident = _elf_getident


#include "syn.h"
#include "libelf.h"
#include "decl.h"


char *
elf_getident(Elf * elf, size_t * ptr)
{
	size_t	sz = 0;
	char *	id = 0;

	if (elf != 0) {
		ELFRLOCK(elf)
		if (elf->ed_identsz != 0) {
			if ((elf->ed_vm == 0) || (elf->ed_status !=
			    ES_COOKED)) {
				/*
				 * We need to upgrade to a Writers
				 * lock
				 */
				ELFUNLOCK(elf)
				ELFWLOCK(elf)
				if ((_elf_cook(elf) == OK_YES) &&
				    (_elf_vm(elf, (size_t)0,
				    elf->ed_identsz) == OK_YES)) {
					id = elf->ed_ident;
					sz = elf->ed_identsz;
				}
			} else {
				id = elf->ed_ident;
				sz = elf->ed_identsz;
			}
		}
		ELFUNLOCK(elf)
	}
	if (ptr != 0)
		*ptr = sz;
	return (id);
}