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