cntl.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"
#include "msg.h"
int
elf_cntl(Elf * elf, Elf_Cmd cmd)
{
if (elf == 0)
return (0);
ELFWLOCK(elf);
switch (cmd) {
case ELF_C_FDREAD:
{
int j = 0;
if ((elf->ed_myflags & EDF_READ) == 0) {
_elf_seterr(EREQ_CNTLWRT, 0);
ELFUNLOCK(elf);
return (-1);
}
if ((elf->ed_status != ES_FROZEN) &&
((_elf_cook(elf) != OK_YES) ||
(_elf_vm(elf, (size_t)0, elf->ed_fsz) != OK_YES)))
j = -1;
elf->ed_fd = -1;
ELFUNLOCK(elf);
return (j);
}
case ELF_C_FDDONE:
if ((elf->ed_myflags & EDF_READ) == 0) {
_elf_seterr(EREQ_CNTLWRT, 0);
ELFUNLOCK(elf);
return (-1);
}
elf->ed_fd = -1;
ELFUNLOCK(elf);
return (0);
default:
_elf_seterr(EREQ_CNTLCMD, 0);
break;
}
ELFUNLOCK(elf);
return (-1);
}