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