freebsd-skq/usr.sbin/kgzip/kgzld.c
pfg 7551d83c35 various: general adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

No functional change intended.
2017-11-27 15:37:16 +00:00

104 lines
3.1 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* 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.
*
* $FreeBSD$
*/
#include <sys/types.h>
#include <sys/endian.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, (char *)NULL);
else
execlp("ld", "ld", "-Ttext", addr, "-o", f2, loader, f1,
(char *)NULL);
warn(NULL);
_exit(1);
default:
if ((pid = waitpid(pid, &status, 0)) == -1)
err(1, NULL);
if (WIFSIGNALED(status) || WEXITSTATUS(status))
exit(1);
}
}