 @@ -1,1653 +1,1653 @@
-/*	$NetBSD: biosdisk.c,v 1.55 2021/05/30 05:59:23 mlelstv Exp $	*/
+/*	$NetBSD: biosdisk.c,v 1.56 2021/12/28 00:34:30 simonb Exp $	*/
 /*
  * Copyright (c) 1996, 1998
  *	Matthias Drochner.  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 ``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.
+ *
  */
 /*
  * raw BIOS disk device for libsa.
  * needs lowlevel parts from bios_disk.S and biosdisk_ll.c
  * partly from netbsd:sys/arch/i386/boot/disk.c
  * no bad144 handling!
+ *
  * A lot of this must match sys/kern/subr_disk_mbr.c
  */
 /*
  * Ported to boot 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
+ *
  * Mach Operating System
  * Copyright (c) 1992, 1991 Carnegie Mellon University
  * All Rights Reserved.
+ *
  * Permission to use, copy, modify and distribute this software and its
  * documentation is hereby granted, provided that both the copyright
  * notice and this permission notice appear in all copies of the
  * software, derivative works or modified versions, and any portions
  * thereof, and that both notices appear in supporting documentation.
+ *
  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
  * Carnegie Mellon requests users of this software to return to
+ *
  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  *  School of Computer Science
  *  Carnegie Mellon University
  *  Pittsburgh PA 15213-3890
+ *
  * any improvements or extensions that they make and grant Carnegie Mellon
  * the rights to redistribute these changes.
  */
 #if !defined(NO_DISKLABEL) || !defined(NO_GPT)
 #define FSTYPENAMES
 #endif
 #include <lib/libkern/libkern.h>
 #include <lib/libsa/stand.h>
 #include <sys/types.h>
 #include <sys/md5.h>
 #include <sys/param.h>
 #include <sys/disklabel.h>
 #include <sys/disklabel_gpt.h>
 #include <sys/uuid.h>
 #include <fs/cd9660/iso.h>
 #include <fs/unicode.h>
 #include <lib/libsa/saerrno.h>
 #include <machine/cpu.h>
 #include "libi386.h"
 #include "biosdisk_ll.h"
 #include "biosdisk.h"
 #ifdef _STANDALONE
 #include "bootinfo.h"
 #endif
 #ifndef NO_GPT
 #define MAXDEVNAME 39 /* "NAME=" + 34 char part_name */
 #else
 #define MAXDEVNAME 16
 #endif
 #ifndef BIOSDISK_BUFSIZE
 #define BIOSDISK_BUFSIZE	2048	/* must be large enough for a CD sector */
 #endif
 #define BIOSDISKNPART 26
 struct biosdisk {
 	struct biosdisk_ll ll;
 	daddr_t         boff;
 	char            buf[BIOSDISK_BUFSIZE];
 #if !defined(NO_DISKLABEL) || !defined(NO_GPT)
 	struct biosdisk_partition part[BIOSDISKNPART];
 #endif
 };
 #include <dev/raidframe/raidframevar.h>
 #define RF_COMPONENT_INFO_OFFSET   16384   /* from sys/dev/raidframe/rf_netbsdkintf.c */
 #define RF_COMPONENT_LABEL_VERSION     2   /* from <dev/raidframe/rf_raid.h> */
 #define RAIDFRAME_NDEV 16 /* abitrary limit to 15 raidframe devices */
 struct raidframe {
 	int	last_unit;
 	int	serial;
 	int	biosdev;
 	int	parent_part;
 #ifndef NO_GPT
 	char    parent_name[MAXDEVNAME + 1];
 #endif
 	daddr_t	offset;
 	daddr_t	size;
 };
 #ifndef NO_GPT
 const struct uuid GET_nbsd_raid = GPT_ENT_TYPE_NETBSD_RAIDFRAME;
 const struct uuid GET_nbsd_ffs = GPT_ENT_TYPE_NETBSD_FFS;
 const struct uuid GET_nbsd_lfs = GPT_ENT_TYPE_NETBSD_LFS;
 const struct uuid GET_nbsd_swap = GPT_ENT_TYPE_NETBSD_SWAP;
 const struct uuid GET_nbsd_ccd = GPT_ENT_TYPE_NETBSD_CCD;
 const struct uuid GET_nbsd_cgd = GPT_ENT_TYPE_NETBSD_CGD;
 const struct uuid GET_efi = GPT_ENT_TYPE_EFI;
 const struct uuid GET_mbr = GPT_ENT_TYPE_MBR;
 const struct uuid GET_fbsd = GPT_ENT_TYPE_FREEBSD;
 const struct uuid GET_fbsd_swap = GPT_ENT_TYPE_FREEBSD_SWAP;
 const struct uuid GET_fbsd_ufs = GPT_ENT_TYPE_FREEBSD_UFS;
 const struct uuid GET_fbsd_vinum = GPT_ENT_TYPE_FREEBSD_VINUM;
 const struct uuid GET_fbsd_zfs = GPT_ENT_TYPE_FREEBSD_ZFS;
 const struct uuid GET_ms_rsvd = GPT_ENT_TYPE_MS_RESERVED;
 const struct uuid GET_ms_basic_data = GPT_ENT_TYPE_MS_BASIC_DATA;
 const struct uuid GET_ms_ldm_metadata = GPT_ENT_TYPE_MS_LDM_METADATA;
 const struct uuid GET_ms_ldm_data = GPT_ENT_TYPE_MS_LDM_DATA;
 const struct uuid GET_linux_data = GPT_ENT_TYPE_LINUX_DATA;
 const struct uuid GET_linux_raid = GPT_ENT_TYPE_LINUX_RAID;
 const struct uuid GET_linux_swap = GPT_ENT_TYPE_LINUX_SWAP;
 const struct uuid GET_linux_lvm = GPT_ENT_TYPE_LINUX_LVM;
 const struct uuid GET_apple_hfs = GPT_ENT_TYPE_APPLE_HFS;
 const struct uuid GET_apple_ufs = GPT_ENT_TYPE_APPLE_UFS;
 const struct uuid GET_bios = GPT_ENT_TYPE_BIOS;
 const struct gpt_part gpt_parts[] = {
 	{ &GET_nbsd_raid,	"NetBSD RAID" },
 	{ &GET_nbsd_ffs,	"NetBSD FFS" },
 	{ &GET_nbsd_lfs,	"NetBSD LFS" },
 	{ &GET_nbsd_swap,	"NetBSD Swap" },
 	{ &GET_nbsd_ccd,	"NetBSD ccd" },
 	{ &GET_nbsd_cgd,	"NetBSD cgd" },
 	{ &GET_efi,		"EFI System" },
 	{ &GET_mbr,		"MBR" },
 	{ &GET_fbsd,		"FreeBSD" },
 	{ &GET_fbsd_swap,	"FreeBSD Swap" },
 	{ &GET_fbsd_ufs,	"FreeBSD UFS" },
 	{ &GET_fbsd_vinum,	"FreeBSD Vinum" },
 	{ &GET_fbsd_zfs,	"FreeBSD ZFS" },
 	{ &GET_ms_rsvd,		"Microsoft Reserved" },
 	{ &GET_ms_basic_data,	"Microsoft Basic data" },
 	{ &GET_ms_ldm_metadata,	"Microsoft LDM metadata" },
 	{ &GET_ms_ldm_data,	"Microsoft LDM data" },
 	{ &GET_linux_data,	"Linux data" },
 	{ &GET_linux_raid,	"Linux RAID" },
 	{ &GET_linux_swap,	"Linux Swap" },
 	{ &GET_linux_lvm,	"Linux LVM" },
 	{ &GET_apple_hfs,	"Apple HFS" },
 	{ &GET_apple_ufs,	"Apple UFS" },
 	{ &GET_bios,		"BIOS Boot (GRUB)" },
 };
 #endif /* NO_GPT */
 struct btinfo_bootdisk bi_disk;
 struct btinfo_bootwedge bi_wedge;
 struct btinfo_rootdevice bi_root;
 #define MBR_PARTS(buf) ((char *)(buf) + offsetof(struct mbr_sector, mbr_parts))
 #ifndef	devb2cdb
 #define	devb2cdb(bno)	(((bno) * DEV_BSIZE) / ISO_DEFAULT_BLOCK_SIZE)
 #endif
 static void
 dealloc_biosdisk(struct biosdisk *d)
+{
 #ifndef NO_GPT
 	int i;
 	for (i = 0; i < __arraycount(d->part); i++) {
 		if (d->part[i].part_name != NULL)
 			dealloc(d->part[i].part_name, BIOSDISK_PART_NAME_LEN);
+	}
 #endif
 	dealloc(d, sizeof(*d));
 	return;
+}
 static struct biosdisk_partition *
 copy_biosdisk_part(struct biosdisk *d)
+{
 	struct biosdisk_partition *part;
 	part = alloc(sizeof(d->part));
 	if (part == NULL)
 		goto out;
 	memcpy(part, d->part, sizeof(d->part));
 #ifndef NO_GPT
 	int i;
 	for (i = 0; i < __arraycount(d->part); i++) {
 		if (d->part[i].part_name != NULL) {
 			part[i].part_name = alloc(BIOSDISK_PART_NAME_LEN);
 			memcpy(part[i].part_name, d->part[i].part_name,
 			       BIOSDISK_PART_NAME_LEN);
+		}
+	}
 #endif
 out:
 	return part;
+}
 int
 biosdisk_strategy(void *devdata, int flag, daddr_t dblk, size_t size,
 		  void *buf, size_t *rsize)
+{
 	struct biosdisk *d;
 	int blks, frag;
 	if (flag != F_READ)
 		return EROFS;
 	d = (struct biosdisk *) devdata;
 	if (d->ll.type == BIOSDISK_TYPE_CD)
 		dblk = devb2cdb(dblk);
 	dblk += d->boff;
 	blks = size / d->ll.secsize;
 	if (blks && readsects(&d->ll, dblk, blks, buf, 0)) {
 		if (rsize)
 			*rsize = 0;
 		return EIO;
+	}
 	/* needed for CD */
 	frag = size % d->ll.secsize;
 	if (frag) {
 		if (readsects(&d->ll, dblk + blks, 1, d->buf, 0)) {
 			if (rsize)
 				*rsize = blks * d->ll.secsize;
 			return EIO;
+		}
 		memcpy(buf + blks * d->ll.secsize, d->buf, frag);
+	}
 	if (rsize)
 		*rsize = size;
 	return 0;
+}
 static struct biosdisk *
 alloc_biosdisk(int biosdev)
+{
 	struct biosdisk *d;
 	d = alloc(sizeof(*d));
 	if (d == NULL)
 		return NULL;
 	memset(d, 0, sizeof(*d));
 	d->ll.dev = biosdev;
 	if (set_geometry(&d->ll, NULL)) {
 #ifdef DISK_DEBUG
 		printf("no geometry information\n");
 #endif
 		dealloc_biosdisk(d);
 		return NULL;
+	}
 	return d;
+}
 #if !defined(NO_DISKLABEL) || !defined(NO_GPT)
 static void
 md5(void *hash, const void *data, size_t len)
+{
 	MD5_CTX ctx;
 	MD5Init(&ctx);
 	MD5Update(&ctx, data, len);
 	MD5Final(hash, &ctx);
 	return;
+}
 #endif
 #ifndef NO_GPT
 bool
 guid_is_nil(const struct uuid *u)
+{
 	static const struct uuid nil = { .time_low = 0 };
 	return (memcmp(u, &nil, sizeof(*u)) == 0 ? true : false);
+}
 bool
 guid_is_equal(const struct uuid *a, const struct uuid *b)
+{
 	return (memcmp(a, b, sizeof(*a)) == 0 ? true : false);
+}
 #ifndef NO_GPT
 static void
 part_name_utf8(const uint16_t *utf16_src, size_t utf16_srclen,
 	       char *utf8_dst, size_t utf8_dstlen)
+{
 	char *c = utf8_dst;
 	size_t r = utf8_dstlen - 1;
 	size_t n;
 	int j;
 	if (utf8_dst == NULL)
 		return;
 	for (j = 0; j < utf16_srclen && utf16_src[j] != 0x0000; j++) {
 		n = wput_utf8(c, r, le16toh(utf16_src[j]));
 		if (n == 0)
 			break;
 		c += n; r -= n;
+	}
 	*c = '\0';
 	return;
+}
 #endif
 static int
 check_gpt(struct biosdisk *d, daddr_t rf_offset, daddr_t sector)
+{
 	struct gpt_hdr gpth;
 	const struct gpt_ent *ep;
 	const struct uuid *u;
 	daddr_t entblk;
 	size_t size;
 	uint32_t crc;
 	int sectors;
 	int entries;
 	int entry;
 	int i, j;
 	/* read in gpt_hdr sector */
 	if (readsects(&d->ll, sector, 1, d->buf, 1)) {
 #ifdef DISK_DEBUG
 		printf("Error reading GPT header at %"PRId64"\n", sector);
 #endif
 		return EIO;
+	}
 	memcpy(&gpth, d->buf, sizeof(gpth));
 	if (memcmp(GPT_HDR_SIG, gpth.hdr_sig, sizeof(gpth.hdr_sig)))
 		return -1;
 	crc = gpth.hdr_crc_self;
 	gpth.hdr_crc_self = 0;
 	gpth.hdr_crc_self = crc32(0, (const void *)&gpth, GPT_HDR_SIZE);
 	if (gpth.hdr_crc_self != crc) {
 		return -1;
+	}
 	if (gpth.hdr_lba_self + rf_offset != sector)
 		return -1;
 #ifdef _STANDALONE
 	bi_wedge.matchblk = sector;
 	bi_wedge.matchnblks = 1;
 	md5(bi_wedge.matchhash, d->buf, d->ll.secsize);
 #endif
 	sectors = sizeof(d->buf)/d->ll.secsize; /* sectors per buffer */
 	entries = sizeof(d->buf)/gpth.hdr_entsz; /* entries per buffer */
 	entblk = gpth.hdr_lba_table + rf_offset;
 	crc = crc32(0, NULL, 0);
 	j = 0;
 	ep = (const struct gpt_ent *)d->buf;
 	for (entry = 0; entry < gpth.hdr_entries; entry += entries) {
 		size = MIN(sizeof(d->buf),
 		    (gpth.hdr_entries - entry) * gpth.hdr_entsz);
 		entries = size / gpth.hdr_entsz;
 		sectors = roundup(size, d->ll.secsize) / d->ll.secsize;
 		if (readsects(&d->ll, entblk, sectors, d->buf, 1))
 			return -1;
 		entblk += sectors;
 		crc = crc32(crc, (const void *)d->buf, size);
 		for (i = 0; j < BIOSDISKNPART && i < entries; i++) {
 			u = (const struct uuid *)ep[i].ent_type;
 			if (!guid_is_nil(u)) {
 				d->part[j].offset = ep[i].ent_lba_start;
 				d->part[j].size = ep[i].ent_lba_end -
 				    ep[i].ent_lba_start + 1;
 				if (guid_is_equal(u, &GET_nbsd_ffs))
 					d->part[j].fstype = FS_BSDFFS;
 				else if (guid_is_equal(u, &GET_nbsd_lfs))
 					d->part[j].fstype = FS_BSDLFS;
 				else if (guid_is_equal(u, &GET_nbsd_raid))
 					d->part[j].fstype = FS_RAID;
 				else if (guid_is_equal(u, &GET_nbsd_swap))
 					d->part[j].fstype = FS_SWAP;
 				else if (guid_is_equal(u, &GET_nbsd_ccd))
 					d->part[j].fstype = FS_CCD;
 				else if (guid_is_equal(u, &GET_nbsd_cgd))
 					d->part[j].fstype = FS_CGD;
 				else
 					d->part[j].fstype = FS_OTHER;
 #ifndef NO_GPT
 				for (int k = 0;
 				     k < __arraycount(gpt_parts);
 				     k++) {
 					if (guid_is_equal(u, gpt_parts[k].guid))
 						d->part[j].guid = &gpt_parts[k];
+				}
 				d->part[j].attr = ep[i].ent_attr;
 				d->part[j].part_name =
 				    alloc(BIOSDISK_PART_NAME_LEN);
 				part_name_utf8(ep[i].ent_name,
 					       sizeof(ep[i].ent_name),
 					       d->part[j].part_name,
 					       BIOSDISK_PART_NAME_LEN);
 #endif
 				j++;
+			}
+		}
+	}
 	if (crc != gpth.hdr_crc_table) {
 #ifdef DISK_DEBUG
 		printf("GPT table CRC invalid\n");
 #endif
 		return -1;
+	}
 	return 0;
+}
 static int
 read_gpt(struct biosdisk *d, daddr_t rf_offset, daddr_t rf_size)
+{
 	struct biosdisk_extinfo ed;
 	daddr_t gptsector[2];
 	int i, error;
 	if (d->ll.type != BIOSDISK_TYPE_HD)
 		/* No GPT on floppy and CD */
 		return -1;
 	if (rf_offset && rf_size) {
 		gptsector[0] = rf_offset + GPT_HDR_BLKNO;
 		gptsector[1] = rf_offset + rf_size - 1;
 	} else {
 		gptsector[0] = GPT_HDR_BLKNO;
 		if (set_geometry(&d->ll, &ed) == 0 &&
 		    d->ll.flags & BIOSDISK_INT13EXT) {
 			gptsector[1] = ed.totsec - 1;
 			/* Sanity check values returned from BIOS */
 			if (ed.sbytes >= 512 &&
 			    (ed.sbytes & (ed.sbytes - 1)) == 0)
 				d->ll.secsize = ed.sbytes;
 		} else {
 #ifdef DISK_DEBUG
 			printf("Unable to determine extended disk geometry - "
 				"using CHS\n");
 #endif
 			/* at least try some other reasonable values then */
 			gptsector[1] = d->ll.chs_sectors - 1;
+		}
+	}
 	for (i = 0; i < __arraycount(gptsector); i++) {
 		error = check_gpt(d, rf_offset, gptsector[i]);
 		if (error == 0)
 			break;
+	}
 	if (i >= __arraycount(gptsector)) {
 		memset(d->part, 0, sizeof(d->part));
 		return -1;
+	}
 #ifndef USE_SECONDARY_GPT
 	if (i > 0) {
 #ifdef DISK_DEBUG
 		printf("ignoring valid secondary GPT\n");
 #endif
 		return -1;
+	}
 #endif
 #ifdef DISK_DEBUG
 	printf("using %s GPT\n", (i == 0) ? "primary" : "secondary");
 #endif
 	return 0;
+}
 #endif	/* !NO_GPT */
 #ifndef NO_DISKLABEL
 static void
 ingest_label(struct biosdisk *d, struct disklabel *lp)
+{
 	int part;
 	memset(d->part, 0, sizeof(d->part));
 	for (part = 0; part < lp->d_npartitions; part++) {
 		if (lp->d_partitions[part].p_size == 0)
 			continue;
 		if (lp->d_partitions[part].p_fstype == FS_UNUSED)
 			continue;
 		d->part[part].fstype = lp->d_partitions[part].p_fstype;
 		d->part[part].offset = lp->d_partitions[part].p_offset;
 		d->part[part].size = lp->d_partitions[part].p_size;
+	}
+}
 static int
 check_label(struct biosdisk *d, daddr_t sector)
+{
 	struct disklabel *lp;
 	/* find partition in NetBSD disklabel */
 	if (readsects(&d->ll, sector + LABELSECTOR, 1, d->buf, 0)) {
 #ifdef DISK_DEBUG
 		printf("Error reading disklabel\n");
 #endif
 		return EIO;
+	}
 	lp = (struct disklabel *) (d->buf + LABELOFFSET);
 	if (lp->d_magic != DISKMAGIC || dkcksum(lp)) {
 #ifdef DISK_DEBUG
 		printf("warning: no disklabel in sector %"PRId64"\n", sector);
 #endif
 		return -1;
+	}
 	ingest_label(d, lp);
 	bi_disk.labelsector = sector + LABELSECTOR;
 	bi_disk.label.type = lp->d_type;
 	memcpy(bi_disk.label.packname, lp->d_packname, 16);
 	bi_disk.label.checksum = lp->d_checksum;
 	bi_wedge.matchblk = sector + LABELSECTOR;
 	bi_wedge.matchnblks = 1;
 	md5(bi_wedge.matchhash, d->buf, d->ll.secsize);
 	return 0;
+}
 static int
 read_minix_subp(struct biosdisk *d, struct disklabel* dflt_lbl,
 			int this_ext, daddr_t sector)
+{
 	struct mbr_partition mbr[MBR_PART_COUNT];
 	int i;
 	int typ;
 	struct partition *p;
 	if (readsects(&d->ll, sector, 1, d->buf, 0)) {
 #ifdef DISK_DEBUG
 		printf("Error reading MFS sector %"PRId64"\n", sector);
 #endif
 		return EIO;
+	}
 	if ((uint8_t)d->buf[510] != 0x55 || (uint8_t)d->buf[511] != 0xAA) {
 		return -1;
+	}
 	memcpy(&mbr, MBR_PARTS(d->buf), sizeof(mbr));
 	for (i = 0; i < MBR_PART_COUNT; i++) {
 		typ = mbr[i].mbrp_type;
 		if (typ == 0)
 			continue;
 		sector = this_ext + mbr[i].mbrp_start;
 		if (dflt_lbl->d_npartitions >= MAXPARTITIONS)
 			continue;
 		p = &dflt_lbl->d_partitions[dflt_lbl->d_npartitions++];
 		p->p_offset = sector;
 		p->p_size = mbr[i].mbrp_size;
 		p->p_fstype = xlat_mbr_fstype(typ);
+	}
 	return 0;
+}
 #if defined(EFIBOOT) && defined(SUPPORT_CD9660)
 static int
 check_cd9660(struct biosdisk *d)
+{
 	struct biosdisk_extinfo ed;
 	struct iso_primary_descriptor *vd;
 	daddr_t bno;
 	for (bno = 16;; bno++) {
 		if (readsects(&d->ll, bno, 1, d->buf, 0))
 			return -1;
 		vd = (struct iso_primary_descriptor *)d->buf;
 		if (memcmp(vd->id, ISO_STANDARD_ID, sizeof vd->id) != 0)
 			return -1;
 		if (isonum_711(vd->type) == ISO_VD_END)
 			return -1;
 		if (isonum_711(vd->type) == ISO_VD_PRIMARY)
 			break;
+	}
 	if (isonum_723(vd->logical_block_size) != ISO_DEFAULT_BLOCK_SIZE)
 		return -1;
 	if (set_geometry(&d->ll, &ed))
 		return -1;
 	memset(d->part, 0, sizeof(d->part));
 	d->part[0].fstype = FS_ISO9660;
 	d->part[0].offset = 0;
 	d->part[0].size = ed.totsec;
 	return 0;
+}
 #endif
 static int
 read_label(struct biosdisk *d, daddr_t offset)
+{
 	struct disklabel dflt_lbl;
 	struct mbr_partition mbr[MBR_PART_COUNT];
 	struct partition *p;
 	uint32_t sector;
 	int i;
 	int error;
 	int typ;
 	uint32_t ext_base, this_ext, next_ext;
 #ifdef COMPAT_386BSD_MBRPART
 	int sector_386bsd = -1;
 #endif
 	memset(&dflt_lbl, 0, sizeof(dflt_lbl));
 	dflt_lbl.d_npartitions = 8;
 	d->boff = 0;
 	if (d->ll.type != BIOSDISK_TYPE_HD)
 		/* No label on floppy and CD */
 		return -1;
 	/*
 	 * find NetBSD Partition in DOS partition table
 	 * XXX check magic???
 	 */
 	ext_base = offset;
 	next_ext = offset;
 	for (;;) {
 		this_ext = ext_base + next_ext;
 		next_ext = offset;
 		if (readsects(&d->ll, this_ext, 1, d->buf, 0)) {
 #ifdef DISK_DEBUG
 			printf("error reading MBR sector %u\n", this_ext);
 #endif
 			return EIO;
+		}
 		memcpy(&mbr, MBR_PARTS(d->buf), sizeof(mbr));
 		/* Look for NetBSD partition ID */
 		for (i = 0; i < MBR_PART_COUNT; i++) {
 			typ = mbr[i].mbrp_type;
 			if (typ == 0)
 				continue;
 			sector = this_ext + mbr[i].mbrp_start;
 #ifdef DISK_DEBUG
 			printf("ptn type %d in sector %u\n", typ, sector);
 #endif
                         if (typ == MBR_PTYPE_MINIX_14B) {
 				if (!read_minix_subp(d, &dflt_lbl,
 						   this_ext, sector)) {
 					/* Don't add "container" partition */
 					continue;
+				}
+			}
 			if (typ == MBR_PTYPE_NETBSD) {
 				error = check_label(d, sector);
 				if (error >= 0)
 					return error;
+			}
 			if (MBR_IS_EXTENDED(typ)) {
 				next_ext = mbr[i].mbrp_start + offset;
 				continue;
+			}
 #ifdef COMPAT_386BSD_MBRPART
 			if (this_ext == offset && typ == MBR_PTYPE_386BSD)
 				sector_386bsd = sector;
 #endif
 			if (this_ext != offset) {
 				if (dflt_lbl.d_npartitions >= MAXPARTITIONS)
 					continue;
 				p = &dflt_lbl.d_partitions[dflt_lbl.d_npartitions++];
 			} else
 				p = &dflt_lbl.d_partitions[i];
 			p->p_offset = sector;
 			p->p_size = mbr[i].mbrp_size;
 			p->p_fstype = xlat_mbr_fstype(typ);
+		}
 		if (next_ext == offset)
 			break;
 		if (ext_base == offset) {
 			ext_base = next_ext;
 			next_ext = offset;
+		}
+	}
 	sector = offset;
 #ifdef COMPAT_386BSD_MBRPART
 	if (sector_386bsd != -1) {
 		printf("old BSD partition ID!\n");
 		sector = sector_386bsd;
+	}
 #endif
 	/*
 	 * One of two things:
 	 * 	1. no MBR
 	 *	2. no NetBSD partition in MBR
+	 *
 	 * We simply default to "start of disk" in this case and
 	 * press on.
 	 */
 	error = check_label(d, sector);
 	if (error >= 0)
 		return error;
 #if defined(EFIBOOT) && defined(SUPPORT_CD9660)
 	/* Check CD/DVD */
 	error = check_cd9660(d);
 	if (error >= 0)
 		return error;
 #endif
 	/*
 	 * Nothing at start of disk, return info from mbr partitions.
 	 */
 	/* XXX fill it to make checksum match kernel one */
 	dflt_lbl.d_checksum = dkcksum(&dflt_lbl);
 	ingest_label(d, &dflt_lbl);
 	return 0;
+}
 #endif /* NO_DISKLABEL */
 #if !defined(NO_DISKLABEL) || !defined(NO_GPT)
 static int
 read_partitions(struct biosdisk *d, daddr_t offset, daddr_t size)
+{
 	int error;
 	error = -1;
 #ifndef NO_GPT
 	error = read_gpt(d, offset, size);
 	if (error == 0)
 		return 0;
 #endif
 #ifndef NO_DISKLABEL
 	error = read_label(d, offset);
 #endif
 	return error;
+}
 #endif
 #ifndef NO_RAIDFRAME
 static void
 raidframe_probe(struct raidframe *raidframe, int *raidframe_count,
 		struct biosdisk *d, int part)
+{
 	int i = *raidframe_count;
 	struct RF_ComponentLabel_s label;
 	daddr_t offset;
 	if (i + 1 > RAIDFRAME_NDEV)
 		return;
 	offset = d->part[part].offset;
 	if ((biosdisk_read_raidframe(d->ll.dev, offset, &label)) != 0)
 		return;
 	if (label.version != RF_COMPONENT_LABEL_VERSION)
 		printf("Unexpected raidframe label version\n");
 	raidframe[i].last_unit = label.last_unit;
 	raidframe[i].serial = label.serial_number;
 	raidframe[i].biosdev = d->ll.dev;
 	raidframe[i].parent_part = part;
 #ifndef NO_GPT
 	if (d->part[part].part_name)
 		strlcpy(raidframe[i].parent_name,
 			d->part[part].part_name, MAXDEVNAME);
 	else
 		raidframe[i].parent_name[0] = '\0';
 #endif
 	raidframe[i].offset = offset;
 	raidframe[i].size = label.__numBlocks;
 	(*raidframe_count)++;
 	return;
+}
 #endif
 void
 biosdisk_probe(void)
+{
 	struct biosdisk *d;
 	struct biosdisk_extinfo ed;
 #ifndef NO_RAIDFRAME
 	struct raidframe raidframe[RAIDFRAME_NDEV];
 	int raidframe_count = 0;
 #endif
 	uint64_t size;
 	int first;
 	int i;
 #if !defined(NO_DISKLABEL) || !defined(NO_GPT)
 	int part;
 #endif
 	for (i = 0; i < MAX_BIOSDISKS + 2; i++) {
 		first = 1;
 		d = alloc(sizeof(*d));
 		if (d == NULL) {
 			printf("Out of memory\n");
 			return;
+		}
 		memset(d, 0, sizeof(*d));
 		memset(&ed, 0, sizeof(ed));
 		if (i >= MAX_BIOSDISKS)
 			d->ll.dev = 0x00 + i - MAX_BIOSDISKS;	/* fd */
 		else
 			d->ll.dev = 0x80 + i;			/* hd/cd */
 		if (set_geometry(&d->ll, &ed))
 			goto next_disk;
 		printf("disk ");
 		switch (d->ll.type) {
 		case BIOSDISK_TYPE_CD:
 			printf("cd0\n  cd0a\n");
 			break;
 		case BIOSDISK_TYPE_FD:
 			printf("fd%d\n", d->ll.dev & 0x7f);
 			printf("  fd%da\n", d->ll.dev & 0x7f);
 			break;
 		case BIOSDISK_TYPE_HD:
 			printf("hd%d", d->ll.dev & 0x7f);
 			if (d->ll.flags & BIOSDISK_INT13EXT) {
 				printf(" size ");
 				size = ed.totsec * ed.sbytes;
 				if (size >= (10ULL * 1024 * 1024 * 1024))
 					printf("%"PRIu64" GB",
 					    size / (1024 * 1024 * 1024));
 				else
 					printf("%"PRIu64" MB",
 					    size / (1024 * 1024));
+			}
 			printf("\n");
 			break;
+		}
 #if !defined(NO_DISKLABEL) || !defined(NO_GPT)
 		if (d->ll.type != BIOSDISK_TYPE_HD)
 			goto next_disk;
 		if (read_partitions(d, 0, 0) != 0)
 			goto next_disk;
 		for (part = 0; part < BIOSDISKNPART; part++) {
 			if (d->part[part].size == 0)
 				continue;
 			if (d->part[part].fstype == FS_UNUSED)
 				continue;
 #ifndef NO_RAIDFRAME
 			if (d->part[part].fstype == FS_RAID)
 				raidframe_probe(raidframe,
 						&raidframe_count, d, part);
 #endif
 			if (first) {
 				printf(" ");
 				first = 0;
+			}
 #ifndef NO_GPT
 			if (d->part[part].part_name &&
 			    d->part[part].part_name[0])
 				printf(" NAME=%s(", d->part[part].part_name);
 			else
 #endif
 				printf(" hd%d%c(", d->ll.dev & 0x7f, part + 'a');
 #ifndef NO_GPT
 			if (d->part[part].guid != NULL)
 				printf("%s", d->part[part].guid->name);
 			else
 #endif
 			if (d->part[part].fstype < FSMAXTYPES)
 				printf("%s",
 				  fstypenames[d->part[part].fstype]);
 			else
 				printf("%d", d->part[part].fstype);
 			printf(")");
+		}
 #endif
 		if (first == 0)
 			printf("\n");
 next_disk:
 		dealloc_biosdisk(d);
+	}
 #ifndef NO_RAIDFRAME
 	for (i = 0; i < raidframe_count; i++) {
 		size_t secsize;
 		if ((d = alloc_biosdisk(raidframe[i].biosdev)) == NULL) {
 			printf("Out of memory\n");
 			return;
+		}
 		secsize = d->ll.secsize;
 		printf("raidframe raid%d serial %d in ",
 		       raidframe[i].last_unit, raidframe[i].serial);
 #ifndef NO_GPT
 		if (raidframe[i].parent_name[0])
 			printf("NAME=%s size ", raidframe[i].parent_name);
 		else
 #endif
 		printf("hd%d%c size ", d->ll.dev & 0x7f,
 		       raidframe[i].parent_part + 'a');
 		if (raidframe[i].size >= (10ULL * 1024 * 1024 * 1024 / secsize))
 			printf("%"PRIu64" GB",
 			    raidframe[i].size / (1024 * 1024 * 1024 / secsize));
 		else
 			printf("%"PRIu64" MB",
 			    raidframe[i].size / (1024 * 1024 / secsize));
 		printf("\n");
 		if (read_partitions(d,
 		    raidframe[i].offset + RF_PROTECTED_SECTORS,
 		    raidframe[i].size) != 0)
 			goto next_raidrame;
 		first = 1;
 		for (part = 0; part < BIOSDISKNPART; part++) {
 #ifndef NO_GPT
 			bool bootme = d->part[part].attr & GPT_ENT_ATTR_BOOTME;
 #else
 			bool bootme = 0;
 #endif
 			if (d->part[part].size == 0)
 				continue;
 			if (d->part[part].fstype == FS_UNUSED)
 				continue;
 			if (d->part[part].fstype == FS_RAID)
 				continue;
 			if (first) {
 				printf(" ");
 				first = 0;
+			}
 #ifndef NO_GPT
 			if (d->part[part].part_name &&
 			    d->part[part].part_name[0])
 				printf(" NAME=%s(", d->part[part].part_name);
 			else
 #endif
 				printf(" raid%d%c(", raidframe[i].last_unit,
 				       part + 'a');
 #ifndef NO_GPT
 			if (d->part[part].guid != NULL)
 				printf("%s", d->part[part].guid->name);
 			else
 #endif
 			if (d->part[part].fstype < FSMAXTYPES)
 				printf("%s",
 				  fstypenames[d->part[part].fstype]);
 			else
 				printf("%d", d->part[part].fstype);
 			printf("%s)", bootme ? ", bootme" : "");
+		}
 next_raidrame:
 		if (first == 0)
 			printf("\n");
 		dealloc_biosdisk(d);
+	}
 #endif
+}
 /* Determine likely partition for possible sector number of dos
  * partition.
  */
 int
 biosdisk_findpartition(int biosdev, daddr_t sector,
 		       int *partition, const char **part_name)
+{
 #if defined(NO_DISKLABEL) && defined(NO_GPT)
 	*partition = 0;
 	*part_name = NULL;
 	return 0;
 #else
 	int i;
 	struct biosdisk *d;
 	int biosboot_sector_part = -1;
 	int bootable_fs_part = -1;
 	int boot_part = 0;
 #ifndef NO_GPT
 	int gpt_bootme_part = -1;
 	static char namebuf[MAXDEVNAME + 1];
 #endif
 #ifdef DISK_DEBUG
 	printf("looking for partition device %x, sector %"PRId64"\n", biosdev, sector);
 #endif
-	/* default ot first partition */
+	/* default to first partition */
 	*partition = 0;
 	*part_name = NULL;
 	/* Look for netbsd partition that is the dos boot one */
 	d = alloc_biosdisk(biosdev);
 	if (d == NULL)
 		return -1;
 	if (read_partitions(d, 0, 0) == 0) {
 		for (i = 0; i < BIOSDISKNPART; i++) {
 			if (d->part[i].fstype == FS_UNUSED)
 				continue;
 			if (d->part[i].offset == sector &&
 			    biosboot_sector_part == -1)
 				biosboot_sector_part = i;
 #ifndef NO_GPT
 			if (d->part[i].attr & GPT_ENT_ATTR_BOOTME &&
 			    gpt_bootme_part == -1)
 				gpt_bootme_part = i;
 #endif
 			switch (d->part[i].fstype) {
 			case FS_BSDFFS:
 			case FS_BSDLFS:
 			case FS_RAID:
 			case FS_CCD:
 			case FS_CGD:
 			case FS_ISO9660:
 				if (bootable_fs_part == -1)
 					bootable_fs_part = i;
 				break;
 			default:
 				break;
+			}
+		}
 #ifndef NO_GPT
 		if (gpt_bootme_part != -1)
 			boot_part = gpt_bootme_part;
 		else
 #endif
 		if (biosboot_sector_part != -1)
 			boot_part = biosboot_sector_part;
 		else if (bootable_fs_part != -1)
 			boot_part = bootable_fs_part;
 		else
 			boot_part = 0;
 		*partition = boot_part;
 #ifndef NO_GPT
 		if (part_name &&
 		    d->part[boot_part].part_name &&
 		    d->part[boot_part].part_name[0]) {
 			strlcpy(namebuf, d->part[boot_part].part_name,
 				BIOSDISK_PART_NAME_LEN);
 			*part_name = namebuf;
+		}
 #endif
+	}
 	dealloc_biosdisk(d);
 	return 0;
 #endif /* NO_DISKLABEL && NO_GPT */
+}
 int
 biosdisk_readpartition(int biosdev, daddr_t offset, daddr_t size,
     struct biosdisk_partition **partpp, int *rnum)
+{
 #if defined(NO_DISKLABEL) && defined(NO_GPT)
 	return ENOTSUP;
 #else
 	struct biosdisk *d;
 	struct biosdisk_partition *part;
 	int rv;
 	/* Look for netbsd partition that is the dos boot one */
 	d = alloc_biosdisk(biosdev);
 	if (d == NULL)
 		return ENOMEM;
 	if (read_partitions(d, offset, size)) {
 		rv = EINVAL;
 		goto out;
+	}
 	part = copy_biosdisk_part(d);
 	if (part == NULL) {
 		rv = ENOMEM;
 		goto out;
+	}
 	*partpp = part;
 	*rnum = (int)__arraycount(d->part);
 	rv = 0;
 out:
 	dealloc_biosdisk(d);
 	return rv;
 #endif /* NO_DISKLABEL && NO_GPT */
+}
 #ifndef NO_RAIDFRAME
 int
 biosdisk_read_raidframe(int biosdev, daddr_t offset,
 			struct RF_ComponentLabel_s *label)
+{
 #if defined(NO_DISKLABEL) && defined(NO_GPT)
 	return ENOTSUP;
 #else
 	struct biosdisk *d;
 	struct biosdisk_extinfo ed;
 	daddr_t size;
 	int rv = -1;
 	/* Look for netbsd partition that is the dos boot one */
 	d = alloc_biosdisk(biosdev);
 	if (d == NULL)
 		goto out;
 	if (d->ll.type != BIOSDISK_TYPE_HD)
 		/* No raidframe on floppy and CD */
 		goto out;
 	if (set_geometry(&d->ll, &ed) != 0)
 		goto out;
 	/* Sanity check values returned from BIOS */
 	if (ed.sbytes >= 512 &&
 	    (ed.sbytes & (ed.sbytes - 1)) == 0)
 		d->ll.secsize = ed.sbytes;
 	offset += (RF_COMPONENT_INFO_OFFSET / d->ll.secsize);
 	size = roundup(sizeof(*label), d->ll.secsize) / d->ll.secsize;
 	if (readsects(&d->ll, offset, size, d->buf, 0))
 		goto out;
 	memcpy(label, d->buf, sizeof(*label));
 	rv = 0;
 out:
 	if (d != NULL)
 		dealloc_biosdisk(d);
 	return rv;
 #endif /* NO_DISKLABEL && NO_GPT */
+}
 #endif /* NO_RAIDFRAME */
 #ifdef _STANDALONE
 static void
 add_biosdisk_bootinfo(void)
+{
 	if (bootinfo == NULL) {
 		return;
+	}
 	BI_ADD(&bi_disk, BTINFO_BOOTDISK, sizeof(bi_disk));
 	BI_ADD(&bi_wedge, BTINFO_BOOTWEDGE, sizeof(bi_wedge));
 	return;
+}
 #endif
 #ifndef NO_GPT
 static daddr_t
 raidframe_part_offset(struct biosdisk *d, int part)
+{
 	struct biosdisk raidframe;
 	daddr_t rf_offset;
 	daddr_t rf_size;
 	int i, candidate;
 	memset(&raidframe, 0, sizeof(raidframe));
 	raidframe.ll = d->ll;
 	rf_offset = d->part[part].offset + RF_PROTECTED_SECTORS;
 	rf_size = d->part[part].size;
 	if (read_gpt(&raidframe, rf_offset, rf_size) != 0)
 		return RF_PROTECTED_SECTORS;
 	candidate = 0;
 	for (i = 0; i < BIOSDISKNPART; i++) {
 		if (raidframe.part[i].size == 0)
 			continue;
 		if (raidframe.part[i].fstype == FS_UNUSED)
 			continue;
 #ifndef NO_GPT
 		if (raidframe.part[i].attr & GPT_ENT_ATTR_BOOTME)
 			candidate = i;
 #endif
+	}
 	return RF_PROTECTED_SECTORS + raidframe.part[candidate].offset;
+}
 #endif
 int
 biosdisk_open(struct open_file *f, ...)
 /* struct open_file *f, int biosdev, int partition */
+{
 	va_list ap;
 	struct biosdisk *d;
 	int biosdev;
 	int partition;
 	int error = 0;
 	va_start(ap, f);
 	biosdev = va_arg(ap, int);
 	d = alloc_biosdisk(biosdev);
 	if (d == NULL) {
 		error = ENXIO;
 		goto out;
+	}
 	partition = va_arg(ap, int);
 	bi_disk.biosdev = d->ll.dev;
 	bi_disk.partition = partition;
 	bi_disk.labelsector = -1;
 	bi_wedge.biosdev = d->ll.dev;
 	bi_wedge.matchblk = -1;
 #if !defined(NO_DISKLABEL) || !defined(NO_GPT)
 	error = read_partitions(d, 0, 0);
 	if (error == -1) {
 		error = 0;
 		goto nolabel;
+	}
 	if (error)
 		goto out;
 	if (partition >= BIOSDISKNPART ||
 	    d->part[partition].fstype == FS_UNUSED) {
 #ifdef DISK_DEBUG
 		printf("illegal partition\n");
 #endif
 		error = EPART;
 		goto out;
+	}
 	d->boff = d->part[partition].offset;
 	if (d->part[partition].fstype == FS_RAID)
 #ifndef NO_GPT
 		d->boff += raidframe_part_offset(d, partition);
 #else
 		d->boff += RF_PROTECTED_SECTORS;
 #endif
 #ifdef _STANDALONE
 	bi_wedge.startblk = d->part[partition].offset;
 	bi_wedge.nblks = d->part[partition].size;
 #endif
 nolabel:
 #endif
 #ifdef DISK_DEBUG
 	printf("partition @%"PRId64"\n", d->boff);
 #endif
 #ifdef _STANDALONE
 	add_biosdisk_bootinfo();
 #endif
 	f->f_devdata = d;
 out:
         va_end(ap);
 	if (error)
 		dealloc_biosdisk(d);
 	return error;
+}
 #ifndef NO_GPT
 static int
 biosdisk_find_name(const char *fname, int *biosdev,
 		   daddr_t *offset, daddr_t *size)
+{
 	struct biosdisk *d;
 	char name[MAXDEVNAME + 1];
 	char *sep;
 #ifndef NO_RAIDFRAME
 	struct raidframe raidframe[RAIDFRAME_NDEV];
 	int raidframe_count = 0;
 #endif
 	int i;
 	int part;
 	int ret = -1;
 	/* Strip leadinf NAME= and cut after the coloon included */
 	strlcpy(name, fname + 5, MAXDEVNAME);
 	sep = strchr(name, ':');
 	if (sep)
 		*sep = '\0';
 	for (i = 0; i < MAX_BIOSDISKS; i++) {
 		d = alloc(sizeof(*d));
 		if (d == NULL) {
 			printf("Out of memory\n");
 			goto out;
+		}
 		memset(d, 0, sizeof(*d));
 		d->ll.dev = 0x80 + i;			/* hd/cd */
 		if (set_geometry(&d->ll, NULL))
 			goto next_disk;
 		if (d->ll.type != BIOSDISK_TYPE_HD)
 			goto next_disk;
 		if (read_partitions(d, 0, 0) != 0)
 			goto next_disk;
 		for (part = 0; part < BIOSDISKNPART; part++) {
 			if (d->part[part].size == 0)
 				continue;
 			if (d->part[part].fstype == FS_UNUSED)
 				continue;
 #ifndef NO_RAIDFRAME
 			if (d->part[part].fstype == FS_RAID) {
 				raidframe_probe(raidframe,
 						&raidframe_count, d, part);
 				/*
 				 * Do not match RAID partition for a name,
 				 * we want to report an inner partition.
 				 */
 				continue;
+			}
 #endif
 			if (d->part[part].part_name != NULL &&
 			    strcmp(d->part[part].part_name, name) == 0) {
 				*biosdev = d->ll.dev;
 				*offset = d->part[part].offset;
 				*size = d->part[part].size;
 				ret = 0;
 				goto out;
+			}
+		}
 next_disk:
 		dealloc_biosdisk(d);
 		d = NULL;
+	}
 #ifndef NO_RAIDFRAME
 	for (i = 0; i < raidframe_count; i++) {
 		int candidate = -1;
 		if ((d = alloc_biosdisk(raidframe[i].biosdev)) == NULL) {
 			printf("Out of memory\n");
 			goto out;
+		}
 		if (read_partitions(d,
 		    raidframe[i].offset + RF_PROTECTED_SECTORS,
 		    raidframe[i].size) != 0)
 			goto next_raidframe;
 		for (part = 0; part < BIOSDISKNPART; part++) {
 			bool bootme = d->part[part].attr & GPT_ENT_ATTR_BOOTME;
 			if (d->part[part].size == 0)
 				continue;
 			if (d->part[part].fstype == FS_UNUSED)
 				continue;
 			if (d->part[part].part_name != NULL &&
 			    strcmp(d->part[part].part_name, name) == 0) {
 				*biosdev = raidframe[i].biosdev;
 				*offset = raidframe[i].offset
 					+ RF_PROTECTED_SECTORS
 					+ d->part[part].offset;
 				*size = d->part[part].size;
 				ret = 0;
 				goto out;
+			}
 			if (strcmp(raidframe[i].parent_name, name) == 0) {
 				if (candidate == -1 || bootme)
 					candidate = part;
 				continue;
+			}
+		}
 		if (candidate != -1) {
 			*biosdev = raidframe[i].biosdev;
 			*offset = raidframe[i].offset
 				+ RF_PROTECTED_SECTORS
 				+ d->part[candidate].offset;
 			*size = d->part[candidate].size;
 			ret = 0;
 			goto out;
+		}
 next_raidframe:
 		dealloc_biosdisk(d);
 		d = NULL;
+	}
 #endif
 out:
 	if (d != NULL)
 		dealloc_biosdisk(d);
 	return ret;
+}
 #endif
 #ifndef NO_RAIDFRAME
 static int
 biosdisk_find_raid(const char *name, int *biosdev,
 		   daddr_t *offset, daddr_t *size)
+{
 	struct biosdisk *d = NULL;
 	struct raidframe raidframe[RAIDFRAME_NDEV];
 	int raidframe_count = 0;
 	int i;
 	int target_unit = 0;
 	int target_part;
 	int part;
 	int ret = -1;
 	if (strstr(name, "raid") != name)
 		goto out;
 #define isnum(c) ((c) >= '0' && (c) <= '9')
 	i = 4; /* skip leading "raid" */
 	if (!isnum(name[i]))
 		goto out;
 	do {
 		target_unit *= 10;
 		target_unit += name[i++] - '0';
 	} while (isnum(name[i]));
 #define isvalidpart(c) ((c) >= 'a' && (c) <= 'z')
 	if (!isvalidpart(name[i]))
 		goto out;
 	target_part = name[i] - 'a';
 	for (i = 0; i < MAX_BIOSDISKS; i++) {
 		d = alloc(sizeof(*d));
 		if (d == NULL) {
 			printf("Out of memory\n");
 			goto out;
+		}
 		memset(d, 0, sizeof(*d));
 		d->ll.dev = 0x80 + i;			/* hd/cd */
 		if (set_geometry(&d->ll, NULL))
 			goto next_disk;
 		if (d->ll.type != BIOSDISK_TYPE_HD)
 			goto next_disk;
 		if (read_partitions(d, 0, 0) != 0)
 			goto next_disk;
 		for (part = 0; part < BIOSDISKNPART; part++) {
 			if (d->part[part].size == 0)
 				continue;
 			if (d->part[part].fstype != FS_RAID)
 				continue;
 			raidframe_probe(raidframe,
 					&raidframe_count, d, part);
+		}
 next_disk:
 		dealloc_biosdisk(d);
 		d = NULL;
+	}
 	for (i = 0; i < raidframe_count; i++) {
 		if (raidframe[i].last_unit != target_unit)
 			continue;
 		if ((d = alloc_biosdisk(raidframe[i].biosdev)) == NULL) {
 			printf("Out of memory\n");
 			goto out;
+		}
 		if (read_partitions(d,
 		    raidframe[i].offset + RF_PROTECTED_SECTORS,
 		    raidframe[i].size) != 0)
 			goto next_raidframe;
 		for (part = 0; part < BIOSDISKNPART; part++) {
 			if (d->part[part].size == 0)
 				continue;
 			if (d->part[part].fstype == FS_UNUSED)
 				continue;
 			if (part == target_part) {
 				*biosdev = raidframe[i].biosdev;
 				*offset = raidframe[i].offset
 					+ RF_PROTECTED_SECTORS
 					+ d->part[part].offset;
 				*size = d->part[part].size;
 				ret = 0;
 				goto out;
+			}
+		}
 next_raidframe:
 		dealloc_biosdisk(d);
 		d = NULL;
+	}
 out:
 	if (d != NULL)
 		dealloc_biosdisk(d);
 	return ret;
+}
 #endif
 int
 biosdisk_open_name(struct open_file *f, const char *name)
+{
 #if defined(NO_GPT) && defined(NO_RAIDFRAME)
 	return ENXIO;
 #else
 	struct biosdisk *d = NULL;
 	int biosdev;
 	daddr_t offset;
 	daddr_t size;
 	int error = -1;
 #ifndef NO_GPT
 	if (strstr(name, "NAME=") == name)
 		error = biosdisk_find_name(name, &biosdev, &offset, &size);
 #endif
 #ifndef NO_RAIDFRAME
 	if (strstr(name, "raid") == name)
 		error = biosdisk_find_raid(name, &biosdev, &offset, &size);
 #endif
 	if (error != 0) {
 		printf("%s not found\n", name);
 		error = ENXIO;
 		goto out;
+	}
 	d = alloc_biosdisk(biosdev);
 	if (d == NULL) {
 		error = ENXIO;
 		goto out;
+	}
 	bi_disk.biosdev = d->ll.dev;
 	bi_disk.partition = 0;
 	bi_disk.labelsector = -1;
 	bi_wedge.biosdev = d->ll.dev;
 	/*
 	 * If we did not get wedge match info from check_gpt()
 	 * compute it now.
 	 */
 	if (bi_wedge.matchblk == -1) {
 		if (readsects(&d->ll, offset, 1, d->buf, 1)) {
 #ifdef DISK_DEBUG
        			printf("Error reading sector at %"PRId64"\n", offset);
 #endif
 			error =  EIO;
 			goto out;
+		}
 		bi_wedge.matchblk = offset;
 		bi_wedge.matchnblks = 1;
 		md5(bi_wedge.matchhash, d->buf, d->ll.secsize);
+	}
 	d->boff = offset;
 	bi_wedge.startblk = offset;
 	bi_wedge.nblks = size;
 #ifdef _STANDALONE
 	add_biosdisk_bootinfo();
 #endif
 	f->f_devdata = d;
 out:
 	if (error && d != NULL)
 		dealloc_biosdisk(d);
 	return error;
 #endif
+}
 #ifndef LIBSA_NO_FS_CLOSE
 int
 biosdisk_close(struct open_file *f)
+{
 	struct biosdisk *d = f->f_devdata;
 	/* let the floppy drive go off */
 	if (d->ll.type == BIOSDISK_TYPE_FD)
 		wait_sec(3);	/* 2s is enough on all PCs I found */
 	dealloc_biosdisk(d);
 	f->f_devdata = NULL;
 	return 0;
+}
 #endif
 int
 biosdisk_ioctl(struct open_file *f, u_long cmd, void *arg)
+{
 	return EIO;
+}