loadfile.c revision 1.19
1 /* $NetBSD: loadfile.c,v 1.19 2001/10/31 01:51:42 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center and by Christos Zoulas. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Copyright (c) 1992, 1993 42 * The Regents of the University of California. All rights reserved. 43 * 44 * This code is derived from software contributed to Berkeley by 45 * Ralph Campbell. 46 * 47 * Redistribution and use in source and binary forms, with or without 48 * modification, are permitted provided that the following conditions 49 * are met: 50 * 1. Redistributions of source code must retain the above copyright 51 * notice, this list of conditions and the following disclaimer. 52 * 2. Redistributions in binary form must reproduce the above copyright 53 * notice, this list of conditions and the following disclaimer in the 54 * documentation and/or other materials provided with the distribution. 55 * 3. All advertising materials mentioning features or use of this software 56 * must display the following acknowledgement: 57 * This product includes software developed by the University of 58 * California, Berkeley and its contributors. 59 * 4. Neither the name of the University nor the names of its contributors 60 * may be used to endorse or promote products derived from this software 61 * without specific prior written permission. 62 * 63 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 64 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 65 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 66 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 67 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 68 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 69 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 70 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 71 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 72 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 73 * SUCH DAMAGE. 74 * 75 * @(#)boot.c 8.1 (Berkeley) 6/10/93 76 */ 77 78 #ifdef _STANDALONE 79 #include <lib/libsa/stand.h> 80 #include <lib/libkern/libkern.h> 81 #else 82 #include <stdio.h> 83 #include <string.h> 84 #include <errno.h> 85 #include <stdlib.h> 86 #include <unistd.h> 87 #include <fcntl.h> 88 #include <err.h> 89 #endif 90 91 #include <sys/param.h> 92 #include <sys/exec.h> 93 94 #include "loadfile.h" 95 96 /* 97 * Open 'filename', read in program and and return 0 if ok 1 on error. 98 * Fill in marks 99 */ 100 int 101 loadfile(fname, marks, flags) 102 const char *fname; 103 u_long *marks; 104 int flags; 105 { 106 union { 107 #ifdef BOOT_ECOFF 108 struct ecoff_exechdr coff; 109 #endif 110 #ifdef BOOT_ELF 111 Elf_Ehdr elf; 112 #endif 113 #ifdef BOOT_AOUT 114 struct exec aout; 115 #endif 116 117 } hdr; 118 ssize_t nr; 119 int fd, rval; 120 121 /* Open the file. */ 122 if ((fd = open(fname, 0)) < 0) { 123 WARN(("open %s", fname ? fname : "<default>")); 124 return -1; 125 } 126 127 /* Read the exec header. */ 128 if ((nr = read(fd, &hdr, sizeof(hdr))) != sizeof(hdr)) { 129 WARN(("read header")); 130 goto err; 131 } 132 133 #ifdef BOOT_ECOFF 134 if (!ECOFF_BADMAG(&hdr.coff)) { 135 rval = loadfile_coff(fd, &hdr.coff, marks, flags); 136 } else 137 #endif 138 #ifdef BOOT_ELF 139 if (memcmp(hdr.elf.e_ident, ELFMAG, SELFMAG) == 0 && 140 hdr.elf.e_ident[EI_CLASS] == ELFCLASS) { 141 rval = loadfile_elf(fd, &hdr.elf, marks, flags); 142 } else 143 #endif 144 #ifdef BOOT_AOUT 145 if (OKMAGIC(N_GETMAGIC(hdr.aout)) 146 #ifndef NO_MID_CHECK 147 && N_GETMID(hdr.aout) == MID_MACHINE 148 #endif 149 ) { 150 rval = loadfile_aout(fd, &hdr.aout, marks, flags); 151 } else 152 #endif 153 { 154 rval = 1; 155 errno = EFTYPE; 156 WARN(("%s", fname ? fname : "<default>")); 157 } 158 159 if (rval == 0) { 160 PROGRESS(("=0x%lx\n", marks[MARK_END] - marks[MARK_START])); 161 return fd; 162 } 163 err: 164 (void)close(fd); 165 return -1; 166 } 167
Indexes created Wed Sep 24 15:09:51 GMT 2025