move fs/partitions to block/

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

34 files changed, 6048 insertions, 1 deletions

diff --git a/block/Kconfig b/block/Kconfig
index e97934eecec..09acf1b3990 100644
--- a/block/Kconfig
+++ b/block/Kconfig
@@ -99,6 +99,12 @@ config BLK_DEV_THROTTLING
 
 	See Documentation/cgroups/blkio-controller.txt for more information.
 
+menu "Partition Types"
+
+source "block/partitions/Kconfig"
+
+endmenu
+
 endif # BLOCK
 
 config BLOCK_COMPAT
diff --git a/block/Makefile b/block/Makefile
index 514c6e4f427..3199c0cdef5 100644
--- a/block/Makefile
+++ b/block/Makefile
@@ -5,7 +5,8 @@
 obj-$(CONFIG_BLOCK) := elevator.o blk-core.o blk-tag.o blk-sysfs.o \
 			blk-flush.o blk-settings.o blk-ioc.o blk-map.o \
 			blk-exec.o blk-merge.o blk-softirq.o blk-timeout.o \
-			blk-iopoll.o blk-lib.o ioctl.o genhd.o scsi_ioctl.o
+			blk-iopoll.o blk-lib.o ioctl.o genhd.o scsi_ioctl.o \
+			partitions/
 
 obj-$(CONFIG_BLK_DEV_BSG)	+= bsg.o
 obj-$(CONFIG_BLK_DEV_BSGLIB)	+= bsg-lib.o
diff --git a/block/partitions/Kconfig b/block/partitions/Kconfig
new file mode 100644
index 00000000000..cb5f0a3f1b0
--- /dev/null
+++ b/block/partitions/Kconfig
@@ -0,0 +1,251 @@
+#
+# Partition configuration
+#
+config PARTITION_ADVANCED
+	bool "Advanced partition selection"
+	help
+	  Say Y here if you would like to use hard disks under Linux which
+	  were partitioned under an operating system running on a different
+	  architecture than your Linux system.
+
+	  Note that the answer to this question won't directly affect the
+	  kernel: saying N will just cause the configurator to skip all
+	  the questions about foreign partitioning schemes.
+
+	  If unsure, say N.
+
+config ACORN_PARTITION
+	bool "Acorn partition support" if PARTITION_ADVANCED
+	default y if ARCH_ACORN
+	help
+	  Support hard disks partitioned under Acorn operating systems.
+
+config ACORN_PARTITION_CUMANA
+	bool "Cumana partition support" if PARTITION_ADVANCED
+	default y if ARCH_ACORN
+	depends on ACORN_PARTITION
+	help
+	  Say Y here if you would like to use hard disks under Linux which
+	  were partitioned using the Cumana interface on Acorn machines.
+
+config ACORN_PARTITION_EESOX
+	bool "EESOX partition support" if PARTITION_ADVANCED
+	default y if ARCH_ACORN
+	depends on ACORN_PARTITION
+
+config ACORN_PARTITION_ICS
+	bool "ICS partition support" if PARTITION_ADVANCED
+	default y if ARCH_ACORN
+	depends on ACORN_PARTITION
+	help
+	  Say Y here if you would like to use hard disks under Linux which
+	  were partitioned using the ICS interface on Acorn machines.
+
+config ACORN_PARTITION_ADFS
+	bool "Native filecore partition support" if PARTITION_ADVANCED
+	default y if ARCH_ACORN
+	depends on ACORN_PARTITION
+	help
+	  The Acorn Disc Filing System is the standard file system of the
+	  RiscOS operating system which runs on Acorn's ARM-based Risc PC
+	  systems and the Acorn Archimedes range of machines.  If you say
+	  `Y' here, Linux will support disk partitions created under ADFS.
+
+config ACORN_PARTITION_POWERTEC
+	bool "PowerTec partition support" if PARTITION_ADVANCED
+	default y if ARCH_ACORN
+	depends on ACORN_PARTITION
+	help
+	  Support reading partition tables created on Acorn machines using
+	  the PowerTec SCSI drive.
+
+config ACORN_PARTITION_RISCIX
+	bool "RISCiX partition support" if PARTITION_ADVANCED
+	default y if ARCH_ACORN
+	depends on ACORN_PARTITION
+	help
+	  Once upon a time, there was a native Unix port for the Acorn series
+	  of machines called RISCiX.  If you say 'Y' here, Linux will be able
+	  to read disks partitioned under RISCiX.
+
+config OSF_PARTITION
+	bool "Alpha OSF partition support" if PARTITION_ADVANCED
+	default y if ALPHA
+	help
+	  Say Y here if you would like to use hard disks under Linux which
+	  were partitioned on an Alpha machine.
+
+config AMIGA_PARTITION
+	bool "Amiga partition table support" if PARTITION_ADVANCED
+	default y if (AMIGA || AFFS_FS=y)
+	help
+	  Say Y here if you would like to use hard disks under Linux which
+	  were partitioned under AmigaOS.
+
+config ATARI_PARTITION
+	bool "Atari partition table support" if PARTITION_ADVANCED
+	default y if ATARI
+	help
+	  Say Y here if you would like to use hard disks under Linux which
+	  were partitioned under the Atari OS.
+
+config IBM_PARTITION
+	bool "IBM disk label and partition support"
+	depends on PARTITION_ADVANCED && S390
+	help
+	  Say Y here if you would like to be able to read the hard disk
+	  partition table format used by IBM DASD disks operating under CMS.
+	  Otherwise, say N.
+
+config MAC_PARTITION
+	bool "Macintosh partition map support" if PARTITION_ADVANCED
+	default y if (MAC || PPC_PMAC)
+	help
+	  Say Y here if you would like to use hard disks under Linux which
+	  were partitioned on a Macintosh.
+
+config MSDOS_PARTITION
+	bool "PC BIOS (MSDOS partition tables) support" if PARTITION_ADVANCED
+	default y
+	help
+	  Say Y here.
+
+config BSD_DISKLABEL
+	bool "BSD disklabel (FreeBSD partition tables) support"
+	depends on PARTITION_ADVANCED && MSDOS_PARTITION
+	help
+	  FreeBSD uses its own hard disk partition scheme on your PC. It
+	  requires only one entry in the primary partition table of your disk
+	  and manages it similarly to DOS extended partitions, putting in its
+	  first sector a new partition table in BSD disklabel format. Saying Y
+	  here allows you to read these disklabels and further mount FreeBSD
+	  partitions from within Linux if you have also said Y to "UFS
+	  file system support", above. If you don't know what all this is
+	  about, say N.
+
+config MINIX_SUBPARTITION
+	bool "Minix subpartition support"
+	depends on PARTITION_ADVANCED && MSDOS_PARTITION
+	help
+	  Minix 2.0.0/2.0.2 subpartition table support for Linux.
+	  Say Y here if you want to mount and use Minix 2.0.0/2.0.2
+	  subpartitions.
+
+config SOLARIS_X86_PARTITION
+	bool "Solaris (x86) partition table support"
+	depends on PARTITION_ADVANCED && MSDOS_PARTITION
+	help
+	  Like most systems, Solaris x86 uses its own hard disk partition
+	  table format, incompatible with all others. Saying Y here allows you
+	  to read these partition tables and further mount Solaris x86
+	  partitions from within Linux if you have also said Y to "UFS
+	  file system support", above.
+
+config UNIXWARE_DISKLABEL
+	bool "Unixware slices support"
+	depends on PARTITION_ADVANCED && MSDOS_PARTITION
+	---help---
+	  Like some systems, UnixWare uses its own slice table inside a
+	  partition (VTOC - Virtual Table of Contents). Its format is
+	  incompatible with all other OSes. Saying Y here allows you to read
+	  VTOC and further mount UnixWare partitions read-only from within
+	  Linux if you have also said Y to "UFS file system support" or
+	  "System V and Coherent file system support", above.
+
+	  This is mainly used to carry data from a UnixWare box to your
+	  Linux box via a removable medium like magneto-optical, ZIP or
+	  removable IDE drives. Note, however, that a good portable way to
+	  transport files and directories between unixes (and even other
+	  operating systems) is given by the tar program ("man tar" or
+	  preferably "info tar").
+
+	  If you don't know what all this is about, say N.
+
+config LDM_PARTITION
+	bool "Windows Logical Disk Manager (Dynamic Disk) support"
+	depends on PARTITION_ADVANCED
+	---help---
+	  Say Y here if you would like to use hard disks under Linux which
+	  were partitioned using Windows 2000's/XP's or Vista's Logical Disk
+	  Manager.  They are also known as "Dynamic Disks".
+
+	  Note this driver only supports Dynamic Disks with a protective MBR
+	  label, i.e. DOS partition table.  It does not support GPT labelled
+	  Dynamic Disks yet as can be created with Vista.
+
+	  Windows 2000 introduced the concept of Dynamic Disks to get around
+	  the limitations of the PC's partitioning scheme.  The Logical Disk
+	  Manager allows the user to repartition a disk and create spanned,
+	  mirrored, striped or RAID volumes, all without the need for
+	  rebooting.
+
+	  Normal partitions are now called Basic Disks under Windows 2000, XP,
+	  and Vista.
+
+	  For a fuller description read <file:Documentation/ldm.txt>.
+
+	  If unsure, say N.
+
+config LDM_DEBUG
+	bool "Windows LDM extra logging"
+	depends on LDM_PARTITION
+	help
+	  Say Y here if you would like LDM to log verbosely.  This could be
+	  helpful if the driver doesn't work as expected and you'd like to
+	  report a bug.
+
+	  If unsure, say N.
+
+config SGI_PARTITION
+	bool "SGI partition support" if PARTITION_ADVANCED
+	default y if DEFAULT_SGI_PARTITION
+	help
+	  Say Y here if you would like to be able to read the hard disk
+	  partition table format used by SGI machines.
+
+config ULTRIX_PARTITION
+	bool "Ultrix partition table support" if PARTITION_ADVANCED
+	default y if MACH_DECSTATION
+	help
+	  Say Y here if you would like to be able to read the hard disk
+	  partition table format used by DEC (now Compaq) Ultrix machines.
+	  Otherwise, say N.
+
+config SUN_PARTITION
+	bool "Sun partition tables support" if PARTITION_ADVANCED
+	default y if (SPARC || SUN3 || SUN3X)
+	---help---
+	  Like most systems, SunOS uses its own hard disk partition table
+	  format, incompatible with all others. Saying Y here allows you to
+	  read these partition tables and further mount SunOS partitions from
+	  within Linux if you have also said Y to "UFS file system support",
+	  above. This is mainly used to carry data from a SPARC under SunOS to
+	  your Linux box via a removable medium like magneto-optical or ZIP
+	  drives; note however that a good portable way to transport files and
+	  directories between unixes (and even other operating systems) is
+	  given by the tar program ("man tar" or preferably "info tar"). If
+	  you don't know what all this is about, say N.
+
+config KARMA_PARTITION
+	bool "Karma Partition support"
+	depends on PARTITION_ADVANCED
+	help
+	  Say Y here if you would like to mount the Rio Karma MP3 player, as it
+	  uses a proprietary partition table.
+
+config EFI_PARTITION
+	bool "EFI GUID Partition support"
+	depends on PARTITION_ADVANCED
+	select CRC32
+	help
+	  Say Y here if you would like to use hard disks under Linux which
+	  were partitioned using EFI GPT.
+
+config SYSV68_PARTITION
+	bool "SYSV68 partition table support" if PARTITION_ADVANCED
+	default y if VME
+	help
+	  Say Y here if you would like to be able to read the hard disk
+	  partition table format used by Motorola Delta machines (using
+	  sysv68).
+	  Otherwise, say N.
diff --git a/block/partitions/Makefile b/block/partitions/Makefile
new file mode 100644
index 00000000000..03af8eac51d
--- /dev/null
+++ b/block/partitions/Makefile
@@ -0,0 +1,20 @@
+#
+# Makefile for the linux kernel.
+#
+
+obj-$(CONFIG_BLOCK) := check.o
+
+obj-$(CONFIG_ACORN_PARTITION) += acorn.o
+obj-$(CONFIG_AMIGA_PARTITION) += amiga.o
+obj-$(CONFIG_ATARI_PARTITION) += atari.o
+obj-$(CONFIG_MAC_PARTITION) += mac.o
+obj-$(CONFIG_LDM_PARTITION) += ldm.o
+obj-$(CONFIG_MSDOS_PARTITION) += msdos.o
+obj-$(CONFIG_OSF_PARTITION) += osf.o
+obj-$(CONFIG_SGI_PARTITION) += sgi.o
+obj-$(CONFIG_SUN_PARTITION) += sun.o
+obj-$(CONFIG_ULTRIX_PARTITION) += ultrix.o
+obj-$(CONFIG_IBM_PARTITION) += ibm.o
+obj-$(CONFIG_EFI_PARTITION) += efi.o
+obj-$(CONFIG_KARMA_PARTITION) += karma.o
+obj-$(CONFIG_SYSV68_PARTITION) += sysv68.o
diff --git a/block/partitions/acorn.c b/block/partitions/acorn.c
new file mode 100644
index 00000000000..fbeb697374d
--- /dev/null
+++ b/block/partitions/acorn.c
@@ -0,0 +1,556 @@
+/*
+ *  linux/fs/partitions/acorn.c
+ *
+ *  Copyright (c) 1996-2000 Russell King.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *  Scan ADFS partitions on hard disk drives.  Unfortunately, there
+ *  isn't a standard for partitioning drives on Acorn machines, so
+ *  every single manufacturer of SCSI and IDE cards created their own
+ *  method.
+ */
+#include <linux/buffer_head.h>
+#include <linux/adfs_fs.h>
+
+#include "check.h"
+#include "acorn.h"
+
+/*
+ * Partition types. (Oh for reusability)
+ */
+#define PARTITION_RISCIX_MFM	1
+#define PARTITION_RISCIX_SCSI	2
+#define PARTITION_LINUX		9
+
+#if defined(CONFIG_ACORN_PARTITION_CUMANA) || \
+	defined(CONFIG_ACORN_PARTITION_ADFS)
+static struct adfs_discrecord *
+adfs_partition(struct parsed_partitions *state, char *name, char *data,
+	       unsigned long first_sector, int slot)
+{
+	struct adfs_discrecord *dr;
+	unsigned int nr_sects;
+
+	if (adfs_checkbblk(data))
+		return NULL;
+
+	dr = (struct adfs_discrecord *)(data + 0x1c0);
+
+	if (dr->disc_size == 0 && dr->disc_size_high == 0)
+		return NULL;
+
+	nr_sects = (le32_to_cpu(dr->disc_size_high) << 23) |
+		   (le32_to_cpu(dr->disc_size) >> 9);
+
+	if (name) {
+		strlcat(state->pp_buf, " [", PAGE_SIZE);
+		strlcat(state->pp_buf, name, PAGE_SIZE);
+		strlcat(state->pp_buf, "]", PAGE_SIZE);
+	}
+	put_partition(state, slot, first_sector, nr_sects);
+	return dr;
+}
+#endif
+
+#ifdef CONFIG_ACORN_PARTITION_RISCIX
+
+struct riscix_part {
+	__le32	start;
+	__le32	length;
+	__le32	one;
+	char	name[16];
+};
+
+struct riscix_record {
+	__le32	magic;
+#define RISCIX_MAGIC	cpu_to_le32(0x4a657320)
+	__le32	date;
+	struct riscix_part part[8];
+};
+
+#if defined(CONFIG_ACORN_PARTITION_CUMANA) || \
+	defined(CONFIG_ACORN_PARTITION_ADFS)
+static int riscix_partition(struct parsed_partitions *state,
+			    unsigned long first_sect, int slot,
+			    unsigned long nr_sects)
+{
+	Sector sect;
+	struct riscix_record *rr;
+	
+	rr = read_part_sector(state, first_sect, &sect);
+	if (!rr)
+		return -1;
+
+	strlcat(state->pp_buf, " [RISCiX]", PAGE_SIZE);
+
+
+	if (rr->magic == RISCIX_MAGIC) {
+		unsigned long size = nr_sects > 2 ? 2 : nr_sects;
+		int part;
+
+		strlcat(state->pp_buf, " <", PAGE_SIZE);
+
+		put_partition(state, slot++, first_sect, size);
+		for (part = 0; part < 8; part++) {
+			if (rr->part[part].one &&
+			    memcmp(rr->part[part].name, "All\0", 4)) {
+				put_partition(state, slot++,
+					le32_to_cpu(rr->part[part].start),
+					le32_to_cpu(rr->part[part].length));
+				strlcat(state->pp_buf, "(", PAGE_SIZE);
+				strlcat(state->pp_buf, rr->part[part].name, PAGE_SIZE);
+				strlcat(state->pp_buf, ")", PAGE_SIZE);
+			}
+		}
+
+		strlcat(state->pp_buf, " >\n", PAGE_SIZE);
+	} else {
+		put_partition(state, slot++, first_sect, nr_sects);
+	}
+
+	put_dev_sector(sect);
+	return slot;
+}
+#endif
+#endif
+
+#define LINUX_NATIVE_MAGIC 0xdeafa1de
+#define LINUX_SWAP_MAGIC   0xdeafab1e
+
+struct linux_part {
+	__le32 magic;
+	__le32 start_sect;
+	__le32 nr_sects;
+};
+
+#if defined(CONFIG_ACORN_PARTITION_CUMANA) || \
+	defined(CONFIG_ACORN_PARTITION_ADFS)
+static int linux_partition(struct parsed_partitions *state,
+			   unsigned long first_sect, int slot,
+			   unsigned long nr_sects)
+{
+	Sector sect;
+	struct linux_part *linuxp;
+	unsigned long size = nr_sects > 2 ? 2 : nr_sects;
+
+	strlcat(state->pp_buf, " [Linux]", PAGE_SIZE);
+
+	put_partition(state, slot++, first_sect, size);
+
+	linuxp = read_part_sector(state, first_sect, &sect);
+	if (!linuxp)
+		return -1;
+
+	strlcat(state->pp_buf, " <", PAGE_SIZE);
+	while (linuxp->magic == cpu_to_le32(LINUX_NATIVE_MAGIC) ||
+	       linuxp->magic == cpu_to_le32(LINUX_SWAP_MAGIC)) {
+		if (slot == state->limit)
+			break;
+		put_partition(state, slot++, first_sect +
+				 le32_to_cpu(linuxp->start_sect),
+				 le32_to_cpu(linuxp->nr_sects));
+		linuxp ++;
+	}
+	strlcat(state->pp_buf, " >", PAGE_SIZE);
+
+	put_dev_sector(sect);
+	return slot;
+}
+#endif
+
+#ifdef CONFIG_ACORN_PARTITION_CUMANA
+int adfspart_check_CUMANA(struct parsed_partitions *state)
+{
+	unsigned long first_sector = 0;
+	unsigned int start_blk = 0;
+	Sector sect;
+	unsigned char *data;
+	char *name = "CUMANA/ADFS";
+	int first = 1;
+	int slot = 1;
+
+	/*
+	 * Try Cumana style partitions - sector 6 contains ADFS boot block
+	 * with pointer to next 'drive'.
+	 *
+	 * There are unknowns in this code - is the 'cylinder number' of the
+	 * next partition relative to the start of this one - I'm assuming
+	 * it is.
+	 *
+	 * Also, which ID did Cumana use?
+	 *
+	 * This is totally unfinished, and will require more work to get it
+	 * going. Hence it is totally untested.
+	 */
+	do {
+		struct adfs_discrecord *dr;
+		unsigned int nr_sects;
+
+		data = read_part_sector(state, start_blk * 2 + 6, &sect);
+		if (!data)
+			return -1;
+
+		if (slot == state->limit)
+			break;
+
+		dr = adfs_partition(state, name, data, first_sector, slot++);
+		if (!dr)
+			break;
+
+		name = NULL;
+
+		nr_sects = (data[0x1fd] + (data[0x1fe] << 8)) *
+			   (dr->heads + (dr->lowsector & 0x40 ? 1 : 0)) *
+			   dr->secspertrack;
+
+		if (!nr_sects)
+			break;
+
+		first = 0;
+		first_sector += nr_sects;
+		start_blk += nr_sects >> (BLOCK_SIZE_BITS - 9);
+		nr_sects = 0; /* hmm - should be partition size */
+
+		switch (data[0x1fc] & 15) {
+		case 0: /* No partition / ADFS? */
+			break;
+
+#ifdef CONFIG_ACORN_PARTITION_RISCIX
+		case PARTITION_RISCIX_SCSI:
+			/* RISCiX - we don't know how to find the next one. */
+			slot = riscix_partition(state, first_sector, slot,
+						nr_sects);
+			break;
+#endif
+
+		case PARTITION_LINUX:
+			slot = linux_partition(state, first_sector, slot,
+					       nr_sects);
+			break;
+		}
+		put_dev_sector(sect);
+		if (slot == -1)
+			return -1;
+	} while (1);
+	put_dev_sector(sect);
+	return first ? 0 : 1;
+}
+#endif
+
+#ifdef CONFIG_ACORN_PARTITION_ADFS
+/*
+ * Purpose: allocate ADFS partitions.
+ *
+ * Params : hd		- pointer to gendisk structure to store partition info.
+ *	    dev		- device number to access.
+ *
+ * Returns: -1 on error, 0 for no ADFS boot sector, 1 for ok.
+ *
+ * Alloc  : hda  = whole drive
+ *	    hda1 = ADFS partition on first drive.
+ *	    hda2 = non-ADFS partition.
+ */
+int adfspart_check_ADFS(struct parsed_partitions *state)
+{
+	unsigned long start_sect, nr_sects, sectscyl, heads;
+	Sector sect;
+	unsigned char *data;
+	struct adfs_discrecord *dr;
+	unsigned char id;
+	int slot = 1;
+
+	data = read_part_sector(state, 6, &sect);
+	if (!data)
+		return -1;
+
+	dr = adfs_partition(state, "ADFS", data, 0, slot++);
+	if (!dr) {
+		put_dev_sector(sect);
+    		return 0;
+	}
+
+	heads = dr->heads + ((dr->lowsector >> 6) & 1);
+	sectscyl = dr->secspertrack * heads;
+	start_sect = ((data[0x1fe] << 8) + data[0x1fd]) * sectscyl;
+	id = data[0x1fc] & 15;
+	put_dev_sector(sect);
+
+	/*
+	 * Work out start of non-adfs partition.
+	 */
+	nr_sects = (state->bdev->bd_inode->i_size >> 9) - start_sect;
+
+	if (start_sect) {
+		switch (id) {
+#ifdef CONFIG_ACORN_PARTITION_RISCIX
+		case PARTITION_RISCIX_SCSI:
+		case PARTITION_RISCIX_MFM:
+			slot = riscix_partition(state, start_sect, slot,
+						nr_sects);
+			break;
+#endif
+
+		case PARTITION_LINUX:
+			slot = linux_partition(state, start_sect, slot,
+					       nr_sects);
+			break;
+		}
+	}
+	strlcat(state->pp_buf, "\n", PAGE_SIZE);
+	return 1;
+}
+#endif
+
+#ifdef CONFIG_ACORN_PARTITION_ICS
+
+struct ics_part {
+	__le32 start;
+	__le32 size;
+};
+
+static int adfspart_check_ICSLinux(struct parsed_partitions *state,
+				   unsigned long block)
+{
+	Sector sect;
+	unsigned char *data = read_part_sector(state, block, &sect);
+	int result = 0;
+
+	if (data) {
+		if (memcmp(data, "LinuxPart", 9) == 0)
+			result = 1;
+		put_dev_sector(sect);
+	}
+
+	return result;
+}
+
+/*
+ * Check for a valid ICS partition using the checksum.
+ */
+static inline int valid_ics_sector(const unsigned char *data)
+{
+	unsigned long sum;
+	int i;
+
+	for (i = 0, sum = 0x50617274; i < 508; i++)
+		sum += data[i];
+
+	sum -= le32_to_cpu(*(__le32 *)(&data[508]));
+
+	return sum == 0;
+}
+
+/*
+ * Purpose: allocate ICS partitions.
+ * Params : hd		- pointer to gendisk structure to store partition info.
+ *	    dev		- device number to access.
+ * Returns: -1 on error, 0 for no ICS table, 1 for partitions ok.
+ * Alloc  : hda  = whole drive
+ *	    hda1 = ADFS partition 0 on first drive.
+ *	    hda2 = ADFS partition 1 on first drive.
+ *		..etc..
+ */
+int adfspart_check_ICS(struct parsed_partitions *state)
+{
+	const unsigned char *data;
+	const struct ics_part *p;
+	int slot;
+	Sector sect;
+
+	/*
+	 * Try ICS style partitions - sector 0 contains partition info.
+	 */
+	data = read_part_sector(state, 0, &sect);
+	if (!data)
+	    	return -1;
+
+	if (!valid_ics_sector(data)) {
+	    	put_dev_sector(sect);
+		return 0;
+	}
+
+	strlcat(state->pp_buf, " [ICS]", PAGE_SIZE);
+
+	for (slot = 1, p = (const struct ics_part *)data; p->size; p++) {
+		u32 start = le32_to_cpu(p->start);
+		s32 size = le32_to_cpu(p->size); /* yes, it's signed. */
+
+		if (slot == state->limit)
+			break;
+
+		/*
+		 * Negative sizes tell the RISC OS ICS driver to ignore
+		 * this partition - in effect it says that this does not
+		 * contain an ADFS filesystem.
+		 */
+		if (size < 0) {
+			size = -size;
+
+			/*
+			 * Our own extension - We use the first sector
+			 * of the partition to identify what type this
+			 * partition is.  We must not make this visible
+			 * to the filesystem.
+			 */
+			if (size > 1 && adfspart_check_ICSLinux(state, start)) {
+				start += 1;
+				size -= 1;
+			}
+		}
+
+		if (size)
+			put_partition(state, slot++, start, size);
+	}
+
+	put_dev_sector(sect);
+	strlcat(state->pp_buf, "\n", PAGE_SIZE);
+	return 1;
+}
+#endif
+
+#ifdef CONFIG_ACORN_PARTITION_POWERTEC
+struct ptec_part {
+	__le32 unused1;
+	__le32 unused2;
+	__le32 start;
+	__le32 size;
+	__le32 unused5;
+	char type[8];
+};
+
+static inline int valid_ptec_sector(const unsigned char *data)
+{
+	unsigned char checksum = 0x2a;
+	int i;
+
+	/*
+	 * If it looks like a PC/BIOS partition, then it
+	 * probably isn't PowerTec.
+	 */
+	if (data[510] == 0x55 && data[511] == 0xaa)
+		return 0;
+
+	for (i = 0; i < 511; i++)
+		checksum += data[i];
+
+	return checksum == data[511];
+}
+
+/*
+ * Purpose: allocate ICS partitions.
+ * Params : hd		- pointer to gendisk structure to store partition info.
+ *	    dev		- device number to access.
+ * Returns: -1 on error, 0 for no ICS table, 1 for partitions ok.
+ * Alloc  : hda  = whole drive
+ *	    hda1 = ADFS partition 0 on first drive.
+ *	    hda2 = ADFS partition 1 on first drive.
+ *		..etc..
+ */
+int adfspart_check_POWERTEC(struct parsed_partitions *state)
+{
+	Sector sect;
+	const unsigned char *data;
+	const struct ptec_part *p;
+	int slot = 1;
+	int i;
+
+	data = read_part_sector(state, 0, &sect);
+	if (!data)
+		return -1;
+
+	if (!valid_ptec_sector(data)) {
+		put_dev_sector(sect);
+		return 0;
+	}
+
+	strlcat(state->pp_buf, " [POWERTEC]", PAGE_SIZE);
+
+	for (i = 0, p = (const struct ptec_part *)data; i < 12; i++, p++) {
+		u32 start = le32_to_cpu(p->start);
+		u32 size = le32_to_cpu(p->size);
+
+		if (size)
+			put_partition(state, slot++, start, size);
+	}
+
+	put_dev_sector(sect);
+	strlcat(state->pp_buf, "\n", PAGE_SIZE);
+	return 1;
+}
+#endif
+
+#ifdef CONFIG_ACORN_PARTITION_EESOX
+struct eesox_part {
+	char	magic[6];
+	char	name[10];
+	__le32	start;
+	__le32	unused6;
+	__le32	unused7;
+	__le32	unused8;
+};
+
+/*
+ * Guess who created this format?
+ */
+static const char eesox_name[] = {
+	'N', 'e', 'i', 'l', ' ',
+	'C', 'r', 'i', 't', 'c', 'h', 'e', 'l', 'l', ' ', ' '
+};
+
+/*
+ * EESOX SCSI partition format.
+ *
+ * This is a goddamned awful partition format.  We don't seem to store
+ * the size of the partition in this table, only the start addresses.
+ *
+ * There are two possibilities where the size comes from:
+ *  1. The individual ADFS boot block entries that are placed on the disk.
+ *  2. The start address of the next entry.
+ */
+int adfspart_check_EESOX(struct parsed_partitions *state)
+{
+	Sector sect;
+	const unsigned char *data;
+	unsigned char buffer[256];
+	struct eesox_part *p;
+	sector_t start = 0;
+	int i, slot = 1;
+
+	data = read_part_sector(state, 7, &sect);
+	if (!data)
+		return -1;
+
+	/*
+	 * "Decrypt" the partition table.  God knows why...
+	 */
+	for (i = 0; i < 256; i++)
+		buffer[i] = data[i] ^ eesox_name[i & 15];
+
+	put_dev_sector(sect);
+
+	for (i = 0, p = (struct eesox_part *)buffer; i < 8; i++, p++) {
+		sector_t next;
+
+		if (memcmp(p->magic, "Eesox", 6))
+			break;
+
+		next = le32_to_cpu(p->start);
+		if (i)
+			put_partition(state, slot++, start, next - start);
+		start = next;
+	}
+
+	if (i != 0) {
+		sector_t size;
+
+		size = get_capacity(state->bdev->bd_disk);
+		put_partition(state, slot++, start, size - start);
+		strlcat(state->pp_buf, "\n", PAGE_SIZE);
+	}
+
+	return i ? 1 : 0;
+}
+#endif
diff --git a/block/partitions/acorn.h b/block/partitions/acorn.h
new file mode 100644
index 00000000000..ede82852969
--- /dev/null
+++ b/block/partitions/acorn.h
@@ -0,0 +1,14 @@
+/*
+ * linux/fs/partitions/acorn.h
+ *
+ * Copyright (C) 1996-2001 Russell King.
+ *
+ *  I _hate_ this partitioning mess - why can't we have one defined
+ *  format, and everyone stick to it?
+ */
+
+int adfspart_check_CUMANA(struct parsed_partitions *state);
+int adfspart_check_ADFS(struct parsed_partitions *state)