kgzld.c revision 50479
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 50479 1999-08-28 01:35:59Z peter $ 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 "elfhdr.h" 40#include "kgzip.h" 41 42#define KGZOFF sizeof(struct kgz_elfhdr) 43 44#define align(x, y) (((x) + (y) - 1) & ~((y) - 1)) 45 46/* 47 * Link KGZ file and loader. 48 */ 49void 50kgzld(struct kgz_hdr * kh, const char *f1, const char *f2) 51{ 52 char addr[16]; 53 struct iodesc idi; 54 pid_t pid; 55 size_t n; 56 int status; 57 58 if (strcmp(kh->ident, "KGZ")) { 59 if ((idi.fd = open(idi.fname = f1, O_RDONLY)) == -1) 60 err(1, "%s", idi.fname); 61 n = xread(&idi, kh, sizeof(*kh), KGZOFF); 62 xclose(&idi); 63 if (n != sizeof(*kh) || strcmp(kh->ident, "KGZ")) 64 errx(1, "%s: Invalid format", idi.fname); 65 } 66 sprintf(addr, "%#x", align(kh->dload + kh->dsize, 0x1000)); 67 switch (pid = fork()) { 68 case -1: 69 err(1, NULL); 70 case 0: 71 execlp("ld", "ld", "-Ttext", addr, "-o", f2, loader, f1, NULL); 72 warn(NULL); 73 _exit(1); 74 default: 75 if ((pid = waitpid(pid, &status, 0)) == -1) 76 err(1, NULL); 77 if (WIFSIGNALED(status) || WEXITSTATUS(status)) 78 exit(1); 79 } 80} 81