1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1988 AT&T */
28 /* All Rights Reserved */
29
30 #include "libelf.h"
31 #include "decl.h"
32 #include "msg.h"
33
34 int
elf_cntl(Elf * elf,Elf_Cmd cmd)35 elf_cntl(Elf * elf, Elf_Cmd cmd)
36 {
37
38 if (elf == 0)
39 return (0);
40 ELFWLOCK(elf);
41 switch (cmd) {
42 case ELF_C_FDREAD:
43 {
44 int j = 0;
45
46 if ((elf->ed_myflags & EDF_READ) == 0) {
47 _elf_seterr(EREQ_CNTLWRT, 0);
48 ELFUNLOCK(elf);
49 return (-1);
50 }
51 if ((elf->ed_status != ES_FROZEN) &&
52 ((_elf_cook(elf) != OK_YES) ||
53 (_elf_vm(elf, (size_t)0, elf->ed_fsz) != OK_YES)))
54 j = -1;
55 elf->ed_fd = -1;
56 ELFUNLOCK(elf);
57 return (j);
58 }
59
60 case ELF_C_FDDONE:
61 if ((elf->ed_myflags & EDF_READ) == 0) {
62 _elf_seterr(EREQ_CNTLWRT, 0);
63 ELFUNLOCK(elf);
64 return (-1);
65 }
66 elf->ed_fd = -1;
67 ELFUNLOCK(elf);
68 return (0);
69
70 default:
71 _elf_seterr(EREQ_CNTLCMD, 0);
72 break;
73 }
74 ELFUNLOCK(elf);
75 return (-1);
76 }
77