xref: /illumos-gate/usr/src/cmd/sgs/libelf/common/rawfile.c (revision 88f8b78a88cbdc6d8c1af5c3e54bc49d25095c98)
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, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*	Copyright (c) 1988 AT&T	*/
23 /*	  All Rights Reserved  	*/
24 
25 
26 /*
27  * Copyright (c) 1998 by Sun Microsystems, Inc.
28  * All rights reserved.
29  */
30 
31 
32 #pragma ident	"%Z%%M%	%I%	%E% SMI" 	/* SVr4.0 1.4	*/
33 
34 #pragma weak	elf_rawfile = _elf_rawfile
35 
36 
37 #include "syn.h"
38 #include "libelf.h"
39 #include "decl.h"
40 
41 
42 char *
43 elf_rawfile(Elf * elf, size_t * ptr)
44 {
45 	register size_t	sz;
46 	char		*p = 0;
47 
48 	if (elf == 0) {
49 		if (ptr != 0)
50 			*ptr = 0;
51 		return (0);
52 	}
53 
54 	ELFWLOCK(elf)
55 	if ((sz = elf->ed_fsz) == 0) {
56 		if (ptr != 0)
57 			*ptr = 0;
58 		ELFUNLOCK(elf)
59 		return (0);
60 	}
61 
62 	if (elf->ed_raw != 0)
63 		p = elf->ed_raw;
64 	else if (elf->ed_status == ES_COOKED) {
65 		if ((p = _elf_read(elf->ed_fd, elf->ed_baseoff, sz)) != 0) {
66 			elf->ed_raw = p;
67 			elf->ed_myflags |= EDF_RAWALLOC;
68 		} else
69 			sz = 0;
70 	} else {
71 		p = elf->ed_raw = elf->ed_ident;
72 		elf->ed_status = ES_FROZEN;
73 		if (_elf_vm(elf, (size_t)0, elf->ed_fsz) != OK_YES) {
74 			p = 0;
75 			sz = 0;
76 		}
77 	}
78 	if (ptr != 0)
79 		*ptr = sz;
80 	ELFUNLOCK(elf)
81 	return (p);
82 }
83