Adding upstream version 3.6.upstream/3.6upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 351 insertions, 0 deletions

diff --git a/libparted/fs/amiga/amiga.c b/libparted/fs/amiga/amiga.c
new file mode 100644
index 0000000..1a909fc
--- /dev/null
+++ b/libparted/fs/amiga/amiga.c
@@ -0,0 +1,351 @@
+/*
+    libparted/fs_amiga - amiga file system support.
+    Copyright (C) 2000-2001, 2007, 2009-2014, 2019-2023 Free Software
+    Foundation, Inc.
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+    Contributor:  Sven Luther <luther@debian.org>
+*/
+
+#include <config.h>
+#include <parted/parted.h>
+#include <parted/debug.h>
+#include <parted/endian.h>
+
+#include "amiga.h"
+
+#if ENABLE_NLS
+#  include <libintl.h>
+#  define _(String) dgettext (PACKAGE, String)
+#else
+#  define _(String) (String)
+#endif /* ENABLE_NLS */
+
+#define	IDNAME_RIGIDDISK	(uint32_t)0x5244534B	/* 'RDSK' */
+#define IDNAME_BADBLOCK		(uint32_t)0x42414442	/* 'BADB' */
+#define	IDNAME_PARTITION	(uint32_t)0x50415254	/* 'PART' */
+#define IDNAME_FILESYSHEADER	(uint32_t)0x46534844	/* 'FSHD' */
+#define IDNAME_LOADSEG		(uint32_t)0x4C534547	/* 'LSEG' */
+#define IDNAME_BOOT		(uint32_t)0x424f4f54	/* 'BOOT' */
+#define IDNAME_FREE		(uint32_t)0xffffffff
+
+static const char *
+_amiga_block_id (uint32_t id) {
+	switch (id) {
+		case IDNAME_RIGIDDISK :
+			return "RDSK";
+		case IDNAME_BADBLOCK :
+			return "BADB";
+		case IDNAME_PARTITION :
+			return "PART";
+		case IDNAME_FILESYSHEADER :
+			return "FSHD";
+		case IDNAME_LOADSEG :
+			return "LSEG";
+		case IDNAME_BOOT :
+			return "BOOT";
+		case IDNAME_FREE :
+			return "<free>";
+		default :
+			return "<unknown>";
+	}
+}
+
+struct AmigaIds *
+_amiga_add_id (uint32_t id, struct AmigaIds *ids) {
+	struct AmigaIds *newid;
+
+	if ((newid=ped_malloc(sizeof (struct AmigaIds)))==NULL) {
+		ped_exception_throw(PED_EXCEPTION_ERROR, PED_EXCEPTION_CANCEL,
+			_("%s : Failed to allocate id list element\n"), __func__);
+		return 0;
+	}
+	newid->ID = id;
+	newid->next = ids;
+	return newid;
+}
+
+void
+_amiga_free_ids (struct AmigaIds *ids) {
+	struct AmigaIds *current, *next;
+
+	for (current = ids; current != NULL; current = next) {
+		next = current->next;
+		free (current);
+	}
+}
+int
+_amiga_id_in_list (uint32_t id, struct AmigaIds *ids) {
+	struct AmigaIds *current;
+
+	for (current = ids; current != NULL; current = current->next) {
+		if (id == current->ID)
+			return 1;
+	}
+	return 0;
+}
+
+#define AMIGA_RDB_NOT_FOUND	((uint32_t)0xffffffff)
+
+struct AmigaBlock {
+    uint32_t	amiga_ID;		/* Identifier 32 bit word */
+    uint32_t	amiga_SummedLongss;	/* Size of the structure for checksums */
+    int32_t	amiga_ChkSum;		/* Checksum of the structure */
+};
+#define AMIGA(pos) ((struct AmigaBlock *)(pos))
+
+struct RigidDiskBlock {
+    uint32_t	rdb_ID;			/* Identifier 32 bit word : 'RDSK' */
+    uint32_t	rdb_SummedLongs;	/* Size of the structure for checksums */
+    int32_t	rdb_ChkSum;		/* Checksum of the structure */
+    uint32_t	rdb_HostID;		/* SCSI Target ID of host, not really used */
+    uint32_t	rdb_BlockBytes;		/* Size of disk blocks */
+    uint32_t	rdb_Flags;		/* RDB Flags */
+    /* block list heads */
+    uint32_t	rdb_BadBlockList;	/* Bad block list */
+    uint32_t	rdb_PartitionList;	/* Partition list */
+    uint32_t	rdb_FileSysHeaderList;	/* File system header list */
+    uint32_t	rdb_DriveInit;		/* Drive specific init code */
+    uint32_t	rdb_BootBlockList;	/* Amiga OS 4 Boot Blocks */
+    uint32_t	rdb_Reserved1[5];	/* Unused word, need to be set to $ffffffff */
+    /* physical drive characteristics */
+    uint32_t	rdb_Cylinders;		/* Number of the cylinders of the drive */
+    uint32_t	rdb_Sectors;		/* Number of sectors of the drive */
+    uint32_t	rdb_Heads;		/* Number of heads of the drive */
+    uint32_t	rdb_Interleave;		/* Interleave */
+    uint32_t	rdb_Park;		/* Head parking cylinder */
+    uint32_t	rdb_Reserved2[3];	/* Unused word, need to be set to $ffffffff */
+    uint32_t	rdb_WritePreComp;	/* Starting cylinder of write precompensation */
+    uint32_t	rdb_ReducedWrite;	/* Starting cylinder of reduced write current */
+    uint32_t	rdb_StepRate;		/* Step rate of the drive */
+    uint32_t	rdb_Reserved3[5];	/* Unused word, need to be set to $ffffffff */
+    /* logical drive characteristics */
+    uint32_t	rdb_RDBBlocksLo;	/* low block of range reserved for hardblocks */
+    uint32_t	rdb_RDBBlocksHi;	/* high block of range for these hardblocks */
+    uint32_t	rdb_LoCylinder;		/* low cylinder of partitionable disk area */
+    uint32_t	rdb_HiCylinder;		/* high cylinder of partitionable data area */
+    uint32_t	rdb_CylBlocks;		/* number of blocks available per cylinder */
+    uint32_t	rdb_AutoParkSeconds;	/* zero for no auto park */
+    uint32_t	rdb_HighRDSKBlock;	/* highest block used by RDSK */
+					/* (not including replacement bad blocks) */
+    uint32_t	rdb_Reserved4;
+    /* drive identification */
+    char	rdb_DiskVendor[8];
+    char	rdb_DiskProduct[16];
+    char	rdb_DiskRevision[4];
+    char	rdb_ControllerVendor[8];
+    char	rdb_ControllerProduct[16];
+    char	rdb_ControllerRevision[4];
+    uint32_t	rdb_Reserved5[10];
+};
+
+#define AMIGA_MAX_PARTITIONS	128
+#define	RDB_LOCATION_LIMIT	16
+#define RDSK(pos) ((struct RigidDiskBlock *)(pos))
+
+static int
+_amiga_checksum (struct AmigaBlock *blk) {
+	uint32_t *rdb = (uint32_t *) blk;
+	uint32_t sum;
+	int i, end;
+
+	sum = PED_BE32_TO_CPU (rdb[0]);
+	end = PED_BE32_TO_CPU (rdb[1]);
+
+	if (end > PED_SECTOR_SIZE_DEFAULT) end = PED_SECTOR_SIZE_DEFAULT;
+
+	for (i = 1; i < end; i++) sum += PED_BE32_TO_CPU (rdb[i]);
+
+	return sum;
+}
+
+static void
+_amiga_calculate_checksum (struct AmigaBlock *blk) {
+
+	blk->amiga_ChkSum = PED_CPU_TO_BE32(
+		PED_BE32_TO_CPU(blk->amiga_ChkSum) -
+		_amiga_checksum((struct AmigaBlock *) blk));
+	return;
+}
+
+
+static struct AmigaBlock *
+_amiga_read_block (PedDevice *dev, struct AmigaBlock *blk, PedSector block, struct AmigaIds *ids) {
+	if (!ped_device_read (dev, blk, block, 1)) {
+		switch (ped_exception_throw(PED_EXCEPTION_ERROR,
+			PED_EXCEPTION_CANCEL,
+			_("%s : Couldn't read block %llu\n"), __func__, block))
+		{
+			case PED_EXCEPTION_CANCEL :
+			case PED_EXCEPTION_UNHANDLED :
+			default :
+				return NULL;
+		}
+	}
+	if (ids && !_amiga_id_in_list(PED_BE32_TO_CPU(blk->amiga_ID), ids))
+		return NULL;
+	if (_amiga_checksum (blk) != 0) {
+		switch (ped_exception_throw(PED_EXCEPTION_ERROR,
+			PED_EXCEPTION_FIX | PED_EXCEPTION_IGNORE | PED_EXCEPTION_CANCEL,
+			_("%s : Bad checksum on block %llu of type %s\n"),
+			__func__, block, _amiga_block_id(PED_BE32_TO_CPU(blk->amiga_ID))))
+		{
+			case PED_EXCEPTION_CANCEL :
+				return NULL;
+			case PED_EXCEPTION_FIX :
+				_amiga_calculate_checksum(AMIGA(blk));
+				if (!ped_device_write (dev, blk, block, 1)) {
+					switch (ped_exception_throw(PED_EXCEPTION_FATAL,
+						PED_EXCEPTION_CANCEL,
+						_("%s : Couldn't write block %d\n"), __func__, block))
+					{
+						case PED_EXCEPTION_CANCEL :
+						case PED_EXCEPTION_UNHANDLED :
+						default :
+							return NULL;
+					}
+				}
+				/* FALLTHROUGH */
+			case PED_EXCEPTION_IGNORE :
+			case PED_EXCEPTION_UNHANDLED :
+			default :
+				return blk;
+		}
+	}
+	return blk;
+}
+
+static uint32_t
+_amiga_find_rdb (PedDevice *dev, struct RigidDiskBlock *rdb) {
+	int i;
+	struct AmigaIds *ids;
+
+	ids = _amiga_add_id (IDNAME_RIGIDDISK, NULL);
+
+	for (i = 0; i<RDB_LOCATION_LIMIT; i++) {
+		if (!_amiga_read_block (dev, AMIGA(rdb), i, ids)) {
+			continue;
+		}
+		if (PED_BE32_TO_CPU (rdb->rdb_ID) == IDNAME_RIGIDDISK) {
+			_amiga_free_ids (ids);
+			return i;
+		}
+	}
+	_amiga_free_ids (ids);
+	return AMIGA_RDB_NOT_FOUND;
+}
+
+static int
+_amiga_loop_check (uint32_t block, uint32_t * blocklist, uint32_t max)
+{
+	uint32_t i;
+
+	for (i = 0; i < max; i++)
+		if (block == blocklist[i]) {
+			/* We are looping, let's stop.  */
+			return 1;
+		}
+	blocklist[max] = block;
+	return 0;
+}
+
+/* We have already allocated a rdb, we are now reading it from the disk */
+struct PartitionBlock *
+amiga_find_part (PedGeometry *geom, struct PartitionBlock *part)
+{
+	struct RigidDiskBlock *rdb;
+	uint32_t partblock;
+	uint32_t partlist[AMIGA_MAX_PARTITIONS];
+	int i;
+
+	PED_ASSERT(geom!= NULL);
+	PED_ASSERT(geom->dev!= NULL);
+
+	if (!(rdb = ped_malloc (PED_SECTOR_SIZE_DEFAULT))) {
+		switch (ped_exception_throw(PED_EXCEPTION_ERROR,
+			PED_EXCEPTION_CANCEL,
+			_("%s : Failed to allocate disk_specific rdb block\n"), __func__))
+		{
+			case PED_EXCEPTION_CANCEL :
+			case PED_EXCEPTION_UNHANDLED :
+			default :
+				return NULL;
+		}
+	}
+	if (_amiga_find_rdb (geom->dev, rdb) == AMIGA_RDB_NOT_FOUND) {
+		switch (ped_exception_throw(PED_EXCEPTION_ERROR,
+			PED_EXCEPTION_CANCEL,
+			_("%s : Didn't find rdb block, should never happen\n"), __func__))
+		{
+			case PED_EXCEPTION_CANCEL :
+			case PED_EXCEPTION_UNHANDLED :
+			default :
+				free(rdb);
+				return NULL;
+		}
+	}
+
+	/* We initialize the hardblock free list to detect loops */
+	for (i = 0; i < AMIGA_MAX_PARTITIONS; i++) partlist[i] = IDNAME_FREE;
+
+	for (i = 1, partblock = PED_BE32_TO_CPU(rdb->rdb_PartitionList);
+		i < AMIGA_MAX_PARTITIONS && partblock != IDNAME_FREE;
+		i++, partblock = PED_BE32_TO_CPU(part->pb_Next))
+	{
+		PedSector start, end;
+		PedSector cylblocks;
+
+		/* Let's look for loops in the partition table */
+		if (_amiga_loop_check(partblock, partlist, i)) {
+			free (rdb);
+			return NULL;
+		}
+		/* Let's read a partition block to get its geometry*/
+		if (!ped_device_read (geom->dev, part, (PedSector)partblock, 1)) {
+			switch (ped_exception_throw(PED_EXCEPTION_ERROR,
+				PED_EXCEPTION_CANCEL,
+				_("%s : Failed to read partition block %llu\n"),
+				__func__, (PedSector)partblock))
+			{
+				case PED_EXCEPTION_CANCEL :
+				case PED_EXCEPTION_UNHANDLED :
+				default :
+					free(rdb);
+					return NULL;
+			}
+		}
+
+		/* Current block is not a Partition Block */
+		if (part->pb_ID != IDNAME_PARTITION) {
+			free (rdb);
+			return NULL;
+		}
+
+		/* Calculate the geometry of the partition */
+		cylblocks = ((PedSector) PED_BE32_TO_CPU (part->de_Surfaces)) *
+			((PedSector) PED_BE32_TO_CPU (part->de_BlocksPerTrack));
+		start = ((PedSector) PED_BE32_TO_CPU (part->de_LowCyl)) * cylblocks;
+		end = ((((PedSector) PED_BE32_TO_CPU (part->de_HighCyl))+1) * (cylblocks))-1;
+
+		/* And check if it is the one we are searching for */
+		if (start == geom->start && end == geom->end) {
+			free (rdb);
+			return part;
+		}
+	}
+
+	free (rdb);
+	return NULL;
+}