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/*
* Copyright (c) 1999 Global Technology Associates, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD: src/usr.sbin/kgzip/kgzld.c,v 1.2.2.1 2001/07/19 04:37:24 kris Exp $
* $DragonFly: src/usr.sbin/kgzip/kgzld.c,v 1.2 2003/06/17 04:29:55 dillon Exp $
*/
#include <sys/types.h>
#include <sys/wait.h>
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "aouthdr.h"
#include "elfhdr.h"
#include "kgzip.h"
#define align(x, y) (((x) + (y) - 1) & ~((y) - 1))
/*
* Link KGZ file and loader.
*/
void
kgzld(struct kgz_hdr * kh, const char *f1, const char *f2)
{
char addr[16];
struct iodesc idi;
pid_t pid;
size_t n;
int status;
if (strcmp(kh->ident, "KGZ")) {
if ((idi.fd = open(idi.fname = f1, O_RDONLY)) == -1)
err(1, "%s", idi.fname);
if (!format) {
union {
struct exec ex;
Elf32_Ehdr ee;
} hdr;
n = xread(&idi, &hdr, sizeof(hdr), 0);
if (n >= sizeof(hdr.ee) && IS_ELF(hdr.ee))
format = F_ELF;
else if (n >= sizeof(hdr.ex) &&
N_GETMAGIC(hdr.ex) == OMAGIC)
format = F_AOUT;
if (!format)
errx(1, "%s: Format not supported", idi.fname);
}
n = xread(&idi, kh, sizeof(*kh),
format == F_AOUT ? sizeof(struct kgz_aouthdr0)
: sizeof(struct kgz_elfhdr));
xclose(&idi);
if (n != sizeof(*kh) || strcmp(kh->ident, "KGZ"))
errx(1, "%s: Invalid format", idi.fname);
}
sprintf(addr, "%#x", align(kh->dload + kh->dsize, 0x1000));
switch (pid = fork()) {
case -1:
err(1, NULL);
case 0:
if (format == F_AOUT)
execlp("ld", "ld", "-aout", "-Z", "-T", addr, "-o", f2,
loader, f1, NULL);
else
execlp("ld", "ld", "-Ttext", addr, "-o", f2, loader, f1,
NULL);
warn(NULL);
_exit(1);
default:
if ((pid = waitpid(pid, &status, 0)) == -1)
err(1, NULL);
if (WIFSIGNALED(status) || WEXITSTATUS(status))
exit(1);
}
}
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