1 files changed, 389 insertions, 0 deletions
diff --git a/sys/arch/alpha/stand/installboot.c b/sys/arch/alpha/stand/installboot.c
new file mode 100644
index 00000000000..b0eb593395e
--- /dev/null
+++ b/sys/arch/alpha/stand/installboot.c
@@ -0,0 +1,389 @@
+/*	$NetBSD: installboot.c,v 1.1 1995/11/23 02:39:02 cgd Exp $ */
+
+/*
+ * Copyright (c) 1994 Paul Kranenburg
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Paul Kranenburg.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
+ */
+
+#include <sys/param.h>
+#include <sys/mount.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+#include <sys/sysctl.h>
+#include <ufs/ufs/dinode.h>
+#include <ufs/ufs/dir.h>
+#include <ufs/ffs/fs.h>
+#include <err.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "bbinfo.h"
+
+int	verbose, nowrite, hflag;
+char	*boot, *proto, *dev;
+
+struct bbinfoloc *bbinfolocp;
+struct bbinfo *bbinfop;
+int	max_block_count;
+
+
+char		*loadprotoblocks __P((char *, long *));
+int		loadblocknums __P((char *, int));
+static void	devread __P((int, void *, daddr_t, size_t, char *));
+static void	usage __P((void));
+int 		main __P((int, char *[]));
+
+
+static void
+usage()
+{
+	fprintf(stderr,
+		"usage: installboot [-n] [-v] <boot> <proto> <device>\n");
+	exit(1);
+}
+
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	int	c;
+	int	devfd;
+	char	*protostore;
+	long	protosize;
+	int	mib[2];
+	size_t	size;
+
+	while ((c = getopt(argc, argv, "vn")) != EOF) {
+		switch (c) {
+		case 'n':
+			/* Do not actually write the bootblock to disk */
+			nowrite = 1;
+			break;
+		case 'v':
+			/* Chat */
+			verbose = 1;
+			break;
+		default:
+			usage();
+		}
+	}
+
+	if (argc - optind < 3) {
+		usage();
+	}
+
+	boot = argv[optind];
+	proto = argv[optind + 1];
+	dev = argv[optind + 2];
+
+	if (verbose) {
+		printf("boot: %s\n", boot);
+		printf("proto: %s\n", proto);
+		printf("device: %s\n", dev);
+	}
+
+	/* Load proto blocks into core */
+	if ((protostore = loadprotoblocks(proto, &protosize)) == NULL)
+		exit(1);
+
+	/* Open and check raw disk device */
+	if ((devfd = open(dev, O_RDONLY, 0)) < 0)
+		err(1, "open: %s", dev);
+
+	/* Extract and load block numbers */
+	if (loadblocknums(boot, devfd) != 0)
+		exit(1);
+
+	(void)close(devfd);
+
+	if (nowrite)
+		return 0;
+
+#if 0
+	/* Write patched proto bootblocks into the superblock */
+	if (protosize > SBSIZE - DEV_BSIZE)
+		errx(1, "proto bootblocks too big");
+#endif
+
+	if ((devfd = open(dev, O_RDWR, 0)) < 0)
+		err(1, "open: %s", dev);
+
+	if (lseek(devfd, DEV_BSIZE, SEEK_SET) != DEV_BSIZE)
+		err(1, "lseek bootstrap");
+
+	/* Sync filesystems (to clean in-memory superblock?) */
+	sync();
+	sleep(3);
+
+	if (write(devfd, protostore, protosize) != protosize)
+		err(1, "write bootstrap");
+
+	{
+
+#define BBPAD   0x1e0
+	struct bb {
+		char    bb_pad[BBPAD];  /* disklabel lives in here, actually */
+		long    bb_secsize;     /* size of secondary boot block */
+		long    bb_secstart;    /* start of secondary boot block */
+		long    bb_flags;       /* unknown; always zero */
+		long    bb_cksum;       /* checksum of the the boot block, as longs. */
+	} bb;
+	long *lp, *ep;
+
+	if (lseek(devfd, 0, SEEK_SET) != 0)
+		err(1, "lseek label");
+
+	if (read(devfd, &bb, sizeof (bb)) != sizeof (bb)) 
+		err(1, "read label");
+
+        bb.bb_secsize = 15;
+        bb.bb_secstart = 1;
+        bb.bb_flags = 0;
+        bb.bb_cksum = 0;
+
+        for (lp = (long *)&bb, ep = &bb.bb_cksum; lp < ep; lp++)
+                bb.bb_cksum += *lp;
+
+	if (lseek(devfd, 0, SEEK_SET) != 0)
+		err(1, "lseek label 2");
+
+        if (write(devfd, &bb, sizeof bb) != sizeof bb)
+		err(1, "write label ");
+	}
+
+	(void)close(devfd);
+	return 0;
+}
+
+char *
+loadprotoblocks(fname, size)
+	char *fname;
+	long *size;
+{
+	int	fd, sz;
+	char	*bp;
+	struct	stat statbuf;
+	struct	exec *hp;
+	long	off;
+	u_int64_t *matchp;
+
+	/*
+	 * Read the prototype boot block into memory.
+	 */
+	if ((fd = open(fname, O_RDONLY)) < 0) {
+		warn("open: %s", fname);
+		return NULL;
+	}
+	if (fstat(fd, &statbuf) != 0) {
+		warn("fstat: %s", fname);
+		close(fd);
+		return NULL;
+	}
+	sz = roundup(statbuf.st_size, DEV_BSIZE);
+	if ((bp = calloc(sz, 1)) == NULL) {
+		warnx("malloc: %s: no memory", fname);
+		close(fd);
+		return NULL;
+	}
+	if (read(fd, bp, statbuf.st_size) != statbuf.st_size) {
+		warn("read: %s", fname);
+		free(bp);
+		close(fd);
+		return NULL;
+	}
+	close(fd);
+
+	/*
+	 * Find the magic area of the program, and figure out where
+	 * the 'blocks' struct is, from that.
+	 */
+	bbinfolocp = NULL;
+	for (matchp = (u_int64_t *)bp; (char *)matchp < bp + sz; matchp++) {
+		if (*matchp != 0xbabefacedeadbeef)
+			continue;
+		bbinfolocp = (struct bbinfoloc *)matchp;
+		if (bbinfolocp->magic1 == 0xbabefacedeadbeef &&
+		    bbinfolocp->magic2 == 0xdeadbeeffacebabe)
+			break;
+		bbinfolocp = NULL;
+	}
+
+	if (bbinfolocp == NULL) {
+		warnx("%s: not a valid boot block?", fname);
+		return NULL;
+	}
+
+	bbinfop = (struct bbinfo *)(bp + bbinfolocp->end - bbinfolocp->start);	
+	memset(bbinfop, 0, sz - (bbinfolocp->end - bbinfolocp->start));
+	max_block_count =
+	    ((char *)bbinfop->blocks - bp) / sizeof (bbinfop->blocks[0]);
+
+	if (verbose) {
+		printf("boot block info locator at offset 0x%x\n",
+			(char *)bbinfolocp - bp);
+		printf("boot block info at offset 0x%x\n",
+			(char *)bbinfop - bp);
+		printf("max number of blocks: %d\n", max_block_count);
+	}
+
+	*size = sz;
+	return (bp);
+}
+
+static void
+devread(fd, buf, blk, size, msg)
+	int	fd;
+	void	*buf;
+	daddr_t	blk;
+	size_t	size;
+	char	*msg;
+{
+	if (lseek(fd, dbtob(blk), SEEK_SET) != dbtob(blk))
+		err(1, "%s: devread: lseek", msg);
+
+	if (read(fd, buf, size) != size)
+		err(1, "%s: devread: read", msg);
+}
+
+static char sblock[SBSIZE];
+
+int
+loadblocknums(boot, devfd)
+char	*boot;
+int	devfd;
+{
+	int		i, fd;
+	struct	stat	statbuf;
+	struct	statfs	statfsbuf;
+	struct fs	*fs;
+	char		*buf;
+	daddr_t		blk, *ap;
+	struct dinode	*ip;
+	int		ndb;
+	int32_t		cksum;
+
+	/*
+	 * Open 2nd-level boot program and record the block numbers
+	 * it occupies on the filesystem represented by `devfd'.
+	 */
+	if ((fd = open(boot, O_RDONLY)) < 0)
+		err(1, "open: %s", boot);
+
+	if (fstatfs(fd, &statfsbuf) != 0)
+		err(1, "statfs: %s", boot);
+
+	if (strncmp(statfsbuf.f_fstypename, "ufs", MFSNAMELEN))
+		errx(1, "%s: must be on a UFS filesystem", boot);
+
+	if (fsync(fd) != 0)
+		err(1, "fsync: %s", boot);
+
+	if (fstat(fd, &statbuf) != 0)
+		err(1, "fstat: %s", boot);
+
+	close(fd);
+
+	/* Read superblock */
+	devread(devfd, sblock, btodb(SBOFF), SBSIZE, "superblock");
+	fs = (struct fs *)sblock;
+
+	/* Read inode */
+	if ((buf = malloc(fs->fs_bsize)) == NULL)
+		errx(1, "No memory for filesystem block");
+
+	blk = fsbtodb(fs, ino_to_fsba(fs, statbuf.st_ino));
+	devread(devfd, buf, blk, fs->fs_bsize, "inode");
+	ip = (struct dinode *)(buf) + ino_to_fsbo(fs, statbuf.st_ino);
+
+	/*
+	 * Register filesystem block size.
+	 */
+	bbinfop->bsize = fs->fs_bsize;
+
+	/*
+	 * Get the block numbers; we don't handle fragments
+	 */
+	ndb = howmany(ip->di_size, fs->fs_bsize);
+	if (ndb > max_block_count)
+		errx(1, "%s: Too many blocks", boot);
+
+	/*
+	 * Register block count.
+	 */
+	bbinfop->nblocks = ndb;
+
+	if (verbose)
+		printf("%s: block numbers: ", boot);
+	ap = ip->di_db;
+	for (i = 0; i < NDADDR && *ap && ndb; i++, ap++, ndb--) {
+		blk = fsbtodb(fs, *ap);
+		bbinfop->blocks[i] = blk;
+		if (verbose)
+			printf("%d ", blk);
+	}
+	if (verbose)
+		printf("\n");
+
+	if (ndb == 0)
+		goto checksum;
+
+	/*
+	 * Just one level of indirections; there isn't much room
+	 * for more in the 1st-level bootblocks anyway.
+	 */
+	if (verbose)
+		printf("%s: block numbers (indirect): ", boot);
+	blk = ip->di_ib[0];
+	devread(devfd, buf, blk, fs->fs_bsize, "indirect block");
+	ap = (daddr_t *)buf;
+	for (; i < NINDIR(fs) && *ap && ndb; i++, ap++, ndb--) {
+		blk = fsbtodb(fs, *ap);
+		bbinfop->blocks[i] = blk;
+		if (verbose)
+			printf("%d ", blk);
+	}
+	if (verbose)
+		printf("\n");
+
+	if (ndb)
+		errx(1, "%s: Too many blocks", boot);
+
+checksum:
+	cksum = 0;
+	for (i = 0; i < bbinfop->nblocks +
+	    (sizeof (*bbinfop) / sizeof (bbinfop->blocks[0])) - 1; i++) {
+		cksum += ((int32_t *)bbinfop)[i];
+	}
+	bbinfop->cksum = -cksum;
+
+	return 0;
+}