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 #pragma ident "%Z%%M% %I% %E% SMI"
31
32 #include "libelf.h"
33 #include "decl.h"
34 #include "msg.h"
35
36 int
elf_cntl(Elf * elf,Elf_Cmd cmd)37 elf_cntl(Elf * elf, Elf_Cmd cmd)
38 {
39
40 if (elf == 0)
41 return (0);
42 ELFWLOCK(elf);
43 switch (cmd) {
44 case ELF_C_FDREAD:
45 {
46 int j = 0;
47
48 if ((elf->ed_myflags & EDF_READ) == 0) {
49 _elf_seterr(EREQ_CNTLWRT, 0);
50 ELFUNLOCK(elf);
51 return (-1);
52 }
53 if ((elf->ed_status != ES_FROZEN) &&
54 ((_elf_cook(elf) != OK_YES) ||
55 (_elf_vm(elf, (size_t)0, elf->ed_fsz) != OK_YES)))
56 j = -1;
57 elf->ed_fd = -1;
58 ELFUNLOCK(elf);
59 return (j);
60 }
61
62 case ELF_C_FDDONE:
63 if ((elf->ed_myflags & EDF_READ) == 0) {
64 _elf_seterr(EREQ_CNTLWRT, 0);
65 ELFUNLOCK(elf);
66 return (-1);
67 }
68 elf->ed_fd = -1;
69 ELFUNLOCK(elf);
70 return (0);
71
72 default:
73 _elf_seterr(EREQ_CNTLCMD, 0);
74 break;
75 }
76 ELFUNLOCK(elf);
77 return (-1);
78 }
79