Add simple test program that uses the partition tables handling code.

It is useful to test and debug how boot loader handles partition tables
metadata.

tools/tools/bootparttest/Makefile

@@ -0,0 +1,19 @@
+# $FreeBSD$
+
+.PATH:		${.CURDIR}/../../../sys/boot/common
+
+BINDIR?=	/usr/bin
+
+PROG=		bootparttest
+NO_MAN=
+
+SRCS=		bootparttest.c crc32.c malloc.c part.c
+
+CFLAGS=		-I${.CURDIR}/../../../sys/boot/common -I. \
+		-DLOADER_GPT_SUPPORT -DLOADER_MBR_SUPPORT -DPART_DEBUG
+
+DPADD+=		${LIBGEOM} ${LIBUTIL}
+LDADD+=		${LIBGEOM} ${LIBUTIL}
+LDFLAGS+=	-lgeom -lutil
+
+.include <bsd.prog.mk>

tools/tools/bootparttest/bootparttest.c

@@ -0,0 +1,172 @@
+/*-
+ * Copyright (c) 2012 Andrey V. Elsukov <ae@FreeBSD.org>
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <err.h>
+#include <fcntl.h>
+#include <libgeom.h>
+#include <libutil.h>
+#include <part.h>
+#include <stdio.h>
+#include <unistd.h>
+
+struct disk {
+	const char	*name;
+	uint64_t	mediasize;
+	uint16_t	sectorsize;
+
+	int		fd;
+	int		file;
+	off_t		offset;
+};
+
+static int
+diskread(void *arg, void *buf, size_t blocks, off_t offset)
+{
+	struct disk *dp;
+
+	dp = (struct disk *)arg;
+	printf("%s: read %d blocks from the offset %jd\n", dp->name,
+	    blocks, offset);
+	if (offset >= dp->mediasize / dp->sectorsize)
+		return (-1);
+
+	return (pread(dp->fd, buf, blocks * dp->sectorsize,
+	    (offset + dp->offset) * dp->sectorsize) != blocks * dp->sectorsize);
+}
+
+static const char*
+ptable_type2str(const struct ptable *table)
+{
+
+	switch (ptable_gettype(table)) {
+	case PTABLE_NONE:
+		return ("None");
+	case PTABLE_BSD:
+		return ("BSD");
+	case PTABLE_MBR:
+		return ("MBR");
+	case PTABLE_GPT:
+		return ("GPT");
+	case PTABLE_VTOC8:
+		return ("VTOC8");
+	};
+	return ("Unknown");
+}
+
+#define	PWIDTH	35
+static void
+ptable_print(void *arg, const char *pname, const struct ptable_entry *part)
+{
+	struct ptable *table;
+	struct disk *dp, bsd;
+	char line[80], size[6];
+
+	dp = (struct disk *)arg;
+	sprintf(line, "  %s%s: %s", dp->file ? "disk0": dp->name, pname,
+	    parttype2str(part->type));
+	humanize_number(size, sizeof(size),
+	    (part->end - part->start + 1) * dp->sectorsize, "",
+	    HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL);
+	printf("%-*s%s\n", PWIDTH, line, size);
+	if (part->type == PART_FREEBSD) {
+		sprintf(line, "%s%s", dp->file ? "disk0": dp->name, pname);
+		bsd.name = line;
+		bsd.fd = dp->fd;
+		bsd.file = 0;	/* to use dp->name in the next sprintf */
+		bsd.offset = dp->offset + part->start;
+		bsd.sectorsize = dp->sectorsize;
+		bsd.mediasize = (part->end - part->start + 1) * dp->sectorsize;
+		table = ptable_open(&bsd, bsd.mediasize / bsd.sectorsize,
+		    bsd.sectorsize, diskread);
+		if (table == NULL)
+			return;
+		ptable_iterate(table, &bsd, ptable_print);
+		ptable_close(table);
+	}
+}
+#undef PWIDTH
+
+static void
+inspect_disk(struct disk *dp)
+{
+	struct ptable *table;
+
+	table = ptable_open(dp, dp->mediasize / dp->sectorsize,
+	    dp->sectorsize, diskread);
+	if (table == NULL) {
+		printf("ptable_open failed\n");
+		return;
+	}
+	printf("Partition table detected: %s\n", ptable_type2str(table));
+	ptable_iterate(table, dp, ptable_print);
+	ptable_close(table);
+}
+
+int
+main(int argc, char **argv)
+{
+	struct stat sb;
+	struct disk d;
+
+	if (argc < 2)
+		errx(1, "Usage: %s <GEOM provider name> | "
+		    "<disk image file name>", argv[0]);
+	d.name = argv[1];
+	if (stat(d.name, &sb) == 0 && S_ISREG(sb.st_mode)) {
+		d.fd = open(d.name, O_RDONLY);
+		if (d.fd < 0)
+			err(1, "open %s", d.name);
+		d.mediasize = sb.st_size;
+		d.sectorsize = 512;
+		d.file = 1;
+	} else {
+		d.fd = g_open(d.name, 0);
+		if (d.fd < 0)
+			err(1, "g_open %s", d.name);
+		d.mediasize = g_mediasize(d.fd);
+		d.sectorsize = g_sectorsize(d.fd);
+		d.file = 0;
+	}
+	d.offset = 0;
+	printf("%s \"%s\" opened\n", d.file ? "Disk image": "GEOM provider",
+	    d.name);
+	printf("Mediasize: %ju Bytes (%ju sectors)\nSectorsize: %u Bytes\n",
+	    d.mediasize, d.mediasize / d.sectorsize, d.sectorsize);
+
+	inspect_disk(&d);
+
+	if (d.file)
+		close(d.fd);
+	else
+		g_close(d.fd);
+	return (0);
+}

tools/tools/bootparttest/malloc.c

@@ -0,0 +1,44 @@
+/*-
+ * Copyright (c) 2012 Andrey V. Elsukov <ae@FreeBSD.org>
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <stdlib.h>
+
+void*
+Malloc(size_t size, const char *file, int line)
+{
+
+	return (malloc(size));
+}
+
+void
+Free(void *ptr, const char *file, int line)
+{
+
+	return (free(ptr));
+}