libelf/common/rawfile.c

	rawfile.c revision 7257d1b4d25bfac0c802847390e98a464fd787ac
/*
 * 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 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*  Copyright (c) 1988 AT&T */
/*    All Rights Reserved   */

#pragma ident   "%Z%%M% %I% %E% SMI"

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


char *
elf_rawfile(Elf *elf, size_t *ptr)
{
    register size_t sz;
    char        *p = 0;

    if (elf == 0) {
        if (ptr != 0)
            *ptr = 0;
        return (0);
    }

    ELFWLOCK(elf)
    if ((sz = elf->ed_fsz) == 0) {
        if (ptr != 0)
            *ptr = 0;
        ELFUNLOCK(elf)
        return (0);
    }

    if (elf->ed_raw != 0)
        p = elf->ed_raw;
    else if (elf->ed_status == ES_COOKED) {
        if ((p = _elf_read(elf->ed_fd, elf->ed_baseoff, sz)) != 0) {
            elf->ed_raw = p;
            elf->ed_myflags |= EDF_RAWALLOC;
        } else
            sz = 0;
    } else {
        p = elf->ed_raw = elf->ed_ident;
        elf->ed_status = ES_FROZEN;
        if (_elf_vm(elf, (size_t)0, elf->ed_fsz) != OK_YES) {
            p = 0;
            sz = 0;
        }
    }
    if (ptr != 0)
        *ptr = sz;
    ELFUNLOCK(elf)
    return (p);
}