177 lines
4.4 KiB
C
177 lines
4.4 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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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <sys/types.h>
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#include <err.h>
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#include <paths.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 "kgzip.h"
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#define FN_SRC 0 /* Filename: source */
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#define FN_OBJ 1 /* Filename: relocatable */
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#define FN_KGZ 2 /* Filename: executable */
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#define FN_CNT 3 /* Number of filenames */
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#define SFX_OBJ ".o" /* Filename suffix: relocatable */
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#define SFX_KGZ ".kgz" /* Filename suffix: executable */
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#define SFX_MAX 5 /* Size of larger filename suffix */
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const char *loader = "/usr/lib/kgzldr.o"; /* Default loader */
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int format; /* Output format */
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char *tname; /* Name of temporary file */
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static void cleanup(void);
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static void mk_fn(int, const char *, const char *, char *[]);
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static void usage(void);
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/*
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* Compress a kernel.
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*/
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int
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main(int argc, char *argv[])
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{
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static char *fn[FN_CNT];
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struct kgz_hdr kh;
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const char *output;
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char *tmpdir;
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int cflag, vflag, c;
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tmpdir = getenv("TMPDIR");
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if (asprintf(&tname, "%s/kgzXXXXXXXXXX", tmpdir == NULL ? _PATH_TMP : tmpdir) == -1)
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errx(1, "Out of memory");
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output = NULL;
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cflag = vflag = 0;
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while ((c = getopt(argc, argv, "cvf:l:o:")) != -1)
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switch (c) {
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case 'c':
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cflag = 1;
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break;
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case 'v':
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vflag = 1;
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break;
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case 'f':
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if (!strcmp(optarg, "aout"))
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format = F_AOUT;
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else if (!strcmp(optarg, "elf"))
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format = F_ELF;
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else
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errx(1, "%s: Unknown format", optarg);
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break;
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case 'l':
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loader = optarg;
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break;
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case 'o':
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output = optarg;
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break;
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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if (argc != 1)
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usage();
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atexit(cleanup);
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mk_fn(cflag, *argv, output, fn);
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memset(&kh, 0, sizeof(kh));
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if (fn[FN_SRC]) {
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if (!format)
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format = F_ELF;
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kgzcmp(&kh, fn[FN_SRC], fn[FN_OBJ]);
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}
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if (!cflag)
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kgzld(&kh, fn[FN_OBJ], fn[FN_KGZ]);
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if (vflag)
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printf("dload=%#x dsize=%#x isize=%#x entry=%#x nsize=%#x\n",
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kh.dload, kh.dsize, kh.isize, kh.entry, kh.nsize);
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return 0;
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}
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/*
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* Clean up after processing.
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*/
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static void
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cleanup(void)
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{
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if (tname)
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unlink(tname);
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}
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/*
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* Make the required filenames.
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*/
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static void
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mk_fn(int cflag, const char *f1, const char *f2, char *fn[])
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{
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const char *p, *s;
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size_t n;
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int i, fd;
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i = 0;
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s = strrchr(f1, 0);
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n = sizeof(SFX_OBJ) - 1;
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if ((size_t)(s - f1) > n && !memcmp(s - n, SFX_OBJ, n)) {
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s -= n;
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i++;
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}
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fn[i++] = (char *)f1;
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if (i == FN_OBJ && !cflag) {
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if ((fd = mkstemp(tname)) == -1)
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err(1, NULL);
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close(fd);
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fn[i++] = (char *)tname;
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}
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if (!(fn[i] = (char *)f2)) {
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p = (p = strrchr(f1, '/')) ? p + 1 : f1;
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n = (size_t)(s - p);
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if (!(fn[i] = malloc(n + SFX_MAX)))
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err(1, NULL);
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memcpy(fn[i], p, n);
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strcpy(fn[i] + n, i == FN_OBJ ? SFX_OBJ : SFX_KGZ);
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}
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}
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/*
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* Display usage information.
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*/
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static void
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usage(void)
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{
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fprintf(stderr,
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"usage: kgzip [-cv] [-f format] [-l file] [-o filename] file\n");
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exit(1);
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}
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