Put WARNS?=6 in usr.sbin/Makefile.inc (like in usr.bin/ etc.).
[dragonfly.git] / usr.sbin / kgzip / kgzld.c
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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: src/usr.sbin/kgzip/kgzld.c,v 1.2.2.1 2001/07/19 04:37:24 kris Exp $
1de703da 27 * $DragonFly: src/usr.sbin/kgzip/kgzld.c,v 1.2 2003/06/17 04:29:55 dillon Exp $
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28 */
29
30#include <sys/types.h>
31#include <sys/wait.h>
32
33#include <err.h>
34#include <fcntl.h>
35#include <stdio.h>
36#include <stdlib.h>
37#include <string.h>
38#include <unistd.h>
39
40#include "aouthdr.h"
41#include "elfhdr.h"
42#include "kgzip.h"
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 if (!format) {
62 union {
63 struct exec ex;
64 Elf32_Ehdr ee;
65 } hdr;
66 n = xread(&idi, &hdr, sizeof(hdr), 0);
67 if (n >= sizeof(hdr.ee) && IS_ELF(hdr.ee))
68 format = F_ELF;
69 else if (n >= sizeof(hdr.ex) &&
70 N_GETMAGIC(hdr.ex) == OMAGIC)
71 format = F_AOUT;
72 if (!format)
73 errx(1, "%s: Format not supported", idi.fname);
74 }
75 n = xread(&idi, kh, sizeof(*kh),
76 format == F_AOUT ? sizeof(struct kgz_aouthdr0)
77 : sizeof(struct kgz_elfhdr));
78 xclose(&idi);
79 if (n != sizeof(*kh) || strcmp(kh->ident, "KGZ"))
80 errx(1, "%s: Invalid format", idi.fname);
81 }
82 sprintf(addr, "%#x", align(kh->dload + kh->dsize, 0x1000));
83 switch (pid = fork()) {
84 case -1:
85 err(1, NULL);
86 case 0:
87 if (format == F_AOUT)
88 execlp("ld", "ld", "-aout", "-Z", "-T", addr, "-o", f2,
89 loader, f1, NULL);
90 else
91 execlp("ld", "ld", "-Ttext", addr, "-o", f2, loader, f1,
92 NULL);
93 warn(NULL);
94 _exit(1);
95 default:
96 if ((pid = waitpid(pid, &status, 0)) == -1)
97 err(1, NULL);
98 if (WIFSIGNALED(status) || WEXITSTATUS(status))
99 exit(1);
100 }
101}