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	"@(#)rawput.c	1.13	08/05/31 SMI"
31
32#include <stdlib.h>
33#include <unistd.h>
34#include <errno.h>
35#include "libelf.h"
36#include "decl.h"
37#include "msg.h"
38
39
40/*
41 * Raw file input/output
42 * Read pieces of input files.
43 */
44
45
46char *
47_elf_read(int fd, off_t off, size_t fsz)
48{
49	char		*p;
50
51	if (fsz == 0)
52		return (0);
53
54	if (fd == -1) {
55		_elf_seterr(EREQ_NOFD, 0);
56		return (0);
57	}
58
59	if (lseek(fd, off, 0) != off) {
60		_elf_seterr(EIO_SEEK, errno);
61		return (0);
62	}
63	if ((p = (char *)malloc(fsz)) == 0) {
64		_elf_seterr(EMEM_DATA, errno);
65		return (0);
66	}
67
68	if (read(fd, p, fsz) != fsz) {
69		_elf_seterr(EIO_READ, errno);
70		free(p);
71		return (0);
72	}
73	return (p);
74}
75