9fbd88883c
round has been tested on Solaris/x86 and Linux hosts. * Add host tools cap_mkdb, ctags, m4, uudecode. * Protect __RCSID() and __COPYRIGHT() better. * Reduce the number of places that need to include "config.h", to keep sources closer to their "vanilla" versions. * Add more compat #defines and autoconf-checked functions.
281 lines
6.9 KiB
C
281 lines
6.9 KiB
C
/* $NetBSD: mdsetimage.c,v 1.4 2002/01/31 22:43:36 tv Exp $ */
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/* from: NetBSD: mdsetimage.c,v 1.15 2001/03/21 23:46:48 cgd Exp $ */
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/*
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* Copyright (c) 1996, 2002 Christopher G. Demetriou
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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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* <<Id: LICENSE_GC,v 1.1 2001/10/01 23:24:05 cgd Exp>>
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*/
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#include <sys/cdefs.h>
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#if defined(__COPYRIGHT) && !defined(lint)
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__COPYRIGHT(
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"@(#) Copyright (c) 1996 Christopher G. Demetriou.\
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All rights reserved.\n");
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#endif /* not lint */
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#if defined(__RCSID) && !defined(lint)
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__RCSID("$NetBSD: mdsetimage.c,v 1.4 2002/01/31 22:43:36 tv Exp $");
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#endif /* not lint */
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <sys/types.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <err.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <bfd.h>
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struct symbols {
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char *name;
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bfd_vma vma;
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size_t offset;
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} md_root_symbols[] = {
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#define X_MD_ROOT_IMAGE 0
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{ "_md_root_image", NULL, 0 },
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#define X_MD_ROOT_SIZE 1
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{ "_md_root_size", NULL, 0 },
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{ NULL }
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};
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#define CHUNKSIZE (64 * 1024)
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int main __P((int, char *[]));
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static void usage __P((void)) __attribute__((noreturn));
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static int find_md_root __P((bfd *, struct symbols symbols[]));
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int verbose;
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static const char *progname;
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#undef setprogname
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#define setprogname(x) (void)(progname = (x))
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#undef getprogname
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#define getprogname() (progname)
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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int ch, kfd, fsfd, rv;
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struct stat ksb, fssb;
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size_t md_root_offset;
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u_int32_t md_root_size;
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const char *kfile, *fsfile;
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char *mappedkfile;
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char *bfdname = NULL;
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bfd *abfd;
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ssize_t left_to_copy;
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setprogname(argv[0]);
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while ((ch = getopt(argc, argv, "b:v")) != -1)
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switch (ch) {
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case 'b':
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bfdname = optarg;
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break;
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case 'v':
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verbose = 1;
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break;
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case '?':
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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 != 2)
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usage();
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kfile = argv[0];
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fsfile = argv[1];
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if ((kfd = open(kfile, O_RDWR, 0)) == -1)
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err(1, "open %s", kfile);
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bfd_init();
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if ((abfd = bfd_fdopenr(kfile, bfdname, kfd)) == NULL) {
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bfd_perror("open");
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exit(1);
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}
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if (!bfd_check_format(abfd, bfd_object)) {
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bfd_perror("check format");
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exit(1);
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}
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if (find_md_root(abfd, md_root_symbols) != 0)
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errx(1, "could not find symbols in %s", kfile);
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if (verbose)
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fprintf(stderr, "got symbols from %s\n", kfile);
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if (fstat(kfd, &ksb) == -1)
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err(1, "fstat %s", kfile);
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if (ksb.st_size != (size_t)ksb.st_size)
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errx(1, "%s too big to map", kfile);
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if ((mappedkfile = mmap(NULL, ksb.st_size, PROT_READ,
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MAP_FILE | MAP_PRIVATE, kfd, 0)) == (caddr_t)-1)
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err(1, "mmap %s", kfile);
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if (verbose)
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fprintf(stderr, "mapped %s\n", kfile);
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md_root_offset = md_root_symbols[X_MD_ROOT_IMAGE].offset;
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md_root_size = bfd_get_32(abfd,
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&mappedkfile[md_root_symbols[X_MD_ROOT_SIZE].offset]);
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munmap(mappedkfile, ksb.st_size);
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if ((fsfd = open(fsfile, O_RDONLY, 0)) == -1)
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err(1, "open %s", fsfile);
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if (fstat(fsfd, &fssb) == -1)
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err(1, "fstat %s", fsfile);
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if (fssb.st_size != (size_t)fssb.st_size)
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errx(1, "fs image is too big");
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if (fssb.st_size > md_root_size)
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errx(1, "fs image (%lld bytes) too big for buffer (%lu bytes)",
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(long long)fssb.st_size, (unsigned long)md_root_size);
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if (verbose)
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fprintf(stderr, "copying image from %s into %s\n", fsfile,
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kfile);
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left_to_copy = fssb.st_size;
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if (lseek(kfd, md_root_offset, SEEK_SET) != md_root_offset)
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err(1, "seek %s", kfile);
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while (left_to_copy > 0) {
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char buf[CHUNKSIZE];
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ssize_t todo;
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todo = (left_to_copy > CHUNKSIZE) ? CHUNKSIZE : left_to_copy;
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if ((rv = read(fsfd, buf, todo)) != todo) {
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if (rv == -1)
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err(1, "read %s", fsfile);
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else
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errx(1, "unexpected EOF reading %s", fsfile);
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}
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if ((rv = write(kfd, buf, todo)) != todo) {
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if (rv == -1)
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err(1, "write %s", kfile);
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else
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errx(1, "short write writing %s", kfile);
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}
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left_to_copy -= todo;
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}
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if (verbose)
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fprintf(stderr, "done copying image\n");
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close(fsfd);
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close(kfd);
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if (verbose)
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fprintf(stderr, "exiting\n");
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bfd_close(abfd);
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exit(0);
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}
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static void
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usage()
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{
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const char **list;
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fprintf(stderr,
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"usage: %s [-b bfdname] [-v] kernel_file fsimage_file\n",
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getprogname());
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fprintf(stderr, "supported targets:");
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for (list = bfd_target_list(); *list != NULL; list++)
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fprintf(stderr, " %s", *list);
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fprintf(stderr, "\n");
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exit(1);
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}
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static int
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find_md_root(abfd, symbols)
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bfd *abfd;
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struct symbols symbols[];
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{
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long i;
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long storage_needed;
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long number_of_symbols;
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asymbol **symbol_table = NULL;
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struct symbols *s;
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struct sec *p;
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storage_needed = bfd_get_symtab_upper_bound(abfd);
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if (storage_needed <= 0)
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return (1);
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symbol_table = (asymbol **)malloc(storage_needed);
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if (symbol_table == NULL)
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return (1);
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number_of_symbols = bfd_canonicalize_symtab(abfd, symbol_table);
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if (number_of_symbols <= 0) {
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free(symbol_table);
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return (1);
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}
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for (i = 0; i < number_of_symbols; i++) {
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for (s = symbols; s->name != NULL; s++) {
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const char *sym = bfd_asymbol_name(symbol_table[i]);
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/*
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* match symbol prefix '_' or ''.
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*/
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if (!strcmp(s->name, sym) ||
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!strcmp(s->name + 1, sym)) {
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s->vma = bfd_asymbol_value(symbol_table[i]);
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}
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}
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}
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free(symbol_table);
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for (s = symbols; s->name != NULL; s++) {
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if (s->vma == NULL)
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return (1);
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for (p = abfd->sections; p != NULL; p = p->next) {
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if (p->vma > s->vma || p->vma + p->_raw_size < s->vma)
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continue;
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s->offset = (size_t)(p->filepos + (s->vma - p->vma));
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}
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if (s->offset == 0)
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return (1);
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}
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return (0);
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}
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