kgzld.c revision 68313
1/* 2 * Copyright (c) 1999 Global Technology Associates, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 19 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 20 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 21 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 22 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 23 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 24 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD: head/usr.sbin/kgzip/kgzld.c 68313 2000-11-04 13:02:00Z rnordier $ 27 */ 28 29#include <sys/types.h> 30#include <sys/wait.h> 31 32#include <err.h> 33#include <fcntl.h> 34#include <stdio.h> 35#include <stdlib.h> 36#include <string.h> 37#include <unistd.h> 38 39#include "aouthdr.h" 40#include "elfhdr.h" 41#include "kgzip.h" 42 43#define align(x, y) (((x) + (y) - 1) & ~((y) - 1)) 44 45/* 46 * Link KGZ file and loader. 47 */ 48void 49kgzld(struct kgz_hdr * kh, const char *f1, const char *f2) 50{ 51 char addr[16]; 52 struct iodesc idi; 53 pid_t pid; 54 size_t n; 55 int status; 56 57 if (strcmp(kh->ident, "KGZ")) { 58 if ((idi.fd = open(idi.fname = f1, O_RDONLY)) == -1) 59 err(1, "%s", idi.fname); 60 if (!format) { 61 union { 62 struct exec ex; 63 Elf32_Ehdr ee; 64 } hdr; 65 n = xread(&idi, &hdr, sizeof(hdr), 0); 66 if (n >= sizeof(hdr.ee) && IS_ELF(hdr.ee)) 67 format = F_ELF; 68 else if (n >= sizeof(hdr.ex) && 69 N_GETMAGIC(hdr.ex) == OMAGIC) 70 format = F_AOUT; 71 if (!format) 72 errx(1, "%s: Format not supported", idi.fname); 73 } 74 n = xread(&idi, kh, sizeof(*kh), 75 format == F_AOUT ? sizeof(struct kgz_aouthdr0) 76 : sizeof(struct kgz_elfhdr)); 77 xclose(&idi); 78 if (n != sizeof(*kh) || strcmp(kh->ident, "KGZ")) 79 errx(1, "%s: Invalid format", idi.fname); 80 } 81 sprintf(addr, "%#x", align(kh->dload + kh->dsize, 0x1000)); 82 switch (pid = fork()) { 83 case -1: 84 err(1, NULL); 85 case 0: 86 if (format == F_AOUT) 87 execlp("ld", "ld", "-aout", "-Z", "-T", addr, "-o", f2, 88 loader, f1, NULL); 89 else 90 execlp("ld", "ld", "-Ttext", addr, "-o", f2, loader, f1, 91 NULL); 92 warn(NULL); 93 _exit(1); 94 default: 95 if ((pid = waitpid(pid, &status, 0)) == -1) 96 err(1, NULL); 97 if (WIFSIGNALED(status) || WEXITSTATUS(status)) 98 exit(1); 99 } 100} 101