loadfile.c revision 1.18
1 /* $NetBSD: loadfile.c,v 1.18 2001/10/30 23:51:03 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 #ifdef BOOT_ECOFF 97 #include <sys/exec_ecoff.h> 98 static int coff_exec __P((int, struct ecoff_exechdr *, u_long *, int)); 99 #endif 100 101 #ifdef BOOT_ELF 102 #include <sys/exec_elf.h> 103 static int elf_exec __P((int, Elf_Ehdr *, u_long *, int)); 104 #endif 105 106 #ifdef BOOT_AOUT 107 #include <sys/exec_aout.h> 108 static int aout_exec __P((int, struct exec *, u_long *, int)); 109 #endif 110 111 /* 112 * Open 'filename', read in program and and return 0 if ok 1 on error. 113 * Fill in marks 114 */ 115 int 116 loadfile(fname, marks, flags) 117 const char *fname; 118 u_long *marks; 119 int flags; 120 { 121 union { 122 #ifdef BOOT_ECOFF 123 struct ecoff_exechdr coff; 124 #endif 125 #ifdef BOOT_ELF 126 Elf_Ehdr elf; 127 #endif 128 #ifdef BOOT_AOUT 129 struct exec aout; 130 #endif 131 132 } hdr; 133 ssize_t nr; 134 int fd, rval; 135 136 /* Open the file. */ 137 if ((fd = open(fname, 0)) < 0) { 138 WARN(("open %s", fname ? fname : "<default>")); 139 return -1; 140 } 141 142 /* Read the exec header. */ 143 if ((nr = read(fd, &hdr, sizeof(hdr))) != sizeof(hdr)) { 144 WARN(("read header")); 145 goto err; 146 } 147 148 #ifdef BOOT_ECOFF 149 if (!ECOFF_BADMAG(&hdr.coff)) { 150 rval = coff_exec(fd, &hdr.coff, marks, flags); 151 } else 152 #endif 153 #ifdef BOOT_ELF 154 if (memcmp(hdr.elf.e_ident, ELFMAG, SELFMAG) == 0 && 155 hdr.elf.e_ident[EI_CLASS] == ELFCLASS) { 156 rval = elf_exec(fd, &hdr.elf, marks, flags); 157 } else 158 #endif 159 #ifdef BOOT_AOUT 160 if (OKMAGIC(N_GETMAGIC(hdr.aout)) 161 #ifndef NO_MID_CHECK 162 && N_GETMID(hdr.aout) == MID_MACHINE 163 #endif 164 ) { 165 rval = aout_exec(fd, &hdr.aout, marks, flags); 166 } else 167 #endif 168 { 169 rval = 1; 170 errno = EFTYPE; 171 WARN(("%s", fname ? fname : "<default>")); 172 } 173 174 if (rval == 0) { 175 PROGRESS(("=0x%lx\n", marks[MARK_END] - marks[MARK_START])); 176 return fd; 177 } 178 err: 179 (void)close(fd); 180 return -1; 181 } 182 183 #ifdef BOOT_ECOFF 184 #include "loadfile_ecoff.c" 185 #endif 186 187 #ifdef BOOT_ELF 188 #include "loadfile_elf32.c" 189 #endif 190 191 #ifdef BOOT_AOUT 192 #include "loadfile_aout.c" 193 #endif 194
Indexes created Tue Sep 30 20:09:53 GMT 2025