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/*
* lib/part/part.h
*
* Copyright (C) 1997,1998 Russell King
*/
#ifndef PART_PART_H
#define PART_PART_H
#include "util/types.h"
#include "blkio/blkio.h"
typedef struct {
u_int cylinder;
u_int head;
u_int sector;
} chs_t;
typedef enum {
/* PC compatible partition numbers */
ptyp_none = 0x00, /* No defined partition */
ptyp_dos12 = 0x01, /* DOS 12-bit FAT */
ptyp_xenixroot = 0x02, /* XENIX root */
ptyp_xenixusr = 0x03, /* XENIX /usr */
ptyp_dos16l32 = 0x04, /* DOS 16-bit FAT < 32MB */
ptyp_dos_extended = 0x05, /* DOS Extended partition */
ptyp_dos16g32 = 0x06, /* DOS 16-bit FAT >= 32MB */
ptyp_hpfs = 0x07, /* HPFS */
ptyp_aix = 0x08, /* AIX */
ptyp_aixboot = 0x09, /* AIX boot */
ptyp_os2 = 0x0a, /* OS/2 */
ptyp_win98_extended = 0x0f, /* Win98 extended partition */
ptyp_venix = 0x40, /* VENIX */
ptyp_novell = 0x51, /* Novell */
ptyp_dm6_aux1 = 0x51, /* Disk Manager */
ptyp_microport = 0x52, /* MicroPort */
ptyp_dm6_aux3 = 0x53, /* Disk Manager */
ptyp_dm6 = 0x54, /* Disk Manager */
ptyp_ezdrive = 0x55, /* EZ-Drive */
ptyp_gnuhurd = 0x63, /* GNU HURD */
ptyp_novelnet286 = 0x64, /* Novel Net 286 */
ptyp_novelnet386 = 0x65, /* Novel Net 386 */
ptyp_pcix = 0x75, /* PCIX */
ptyp_old_minix = 0x80, /* Old MINIX partition */
ptyp_linux_parttion = 0x80, /* Old Linux partition */
ptyp_minix = 0x81, /* MINIX partition */
ptyp_linux_swap = 0x82, /* Linux swap */
ptyp_linux_native = 0x83, /* Linux native */
ptyp_linux_extended = 0x85, /* Linux Extended */
ptyp_amoeba = 0x93, /* AMOEBA */
ptyp_amoebabbt = 0x94, /* AMOEBA bad block table */
ptyp_bsd386 = 0xa5, /* BSD 386 */
ptyp_bsdifs = 0xb7, /* BSDi FS */
ptyp_bsdiswap = 0xb8, /* BSDi Swap */
ptyp_syrinx = 0xc7, /* Syrinx */
ptyp_cpm = 0xdb, /* CP/M */
ptyp_dosaccess = 0xe1, /* DOS Access */
ptyp_dosro = 0xe3, /* DOS Read/Only */
ptyp_dosscc = 0xf2, /* DOS SCC */
ptyp_bbt = 0xff, /* Bad block table */
/* Other partition types */
ptyp_filecore = 0x100, /* RiscOS filecore partition */
ptyp_linux_table = 0x101, /* RiscOS filecore Linux partition tbl */
ptyp_pc_table = 0x102, /* PC partition table */
ptyp_pt_oldmap = 0x103, /* for PowerTec OLDMAP partitions */
ptyp_pt_backup = 0x104, /* for PowerTec BACKUP partitions */
ptyp_pt_empty = 0x105, /* for PowerTec EMPTY partitions */
ptyp_reserved = 0xfffe,/* Space used/reserved */
ptyp_unknown = 0xffff /* unrecognised partition */
} ptyp_t;
/* External data structure
*/
typedef struct {
bool_t chs_valid; /* CHS address is valid */
chs_t chs_start; /* For PC BIOS-type schemes */
chs_t chs_end;
blk_t blk_start; /* For LBA block addresses */
blk_t blk_end;
ptyp_t type; /* Partition type */
u_int kern_part_no; /* Kernel partition number */
} partinfo_t;
#include "part/schemedata.h"
typedef struct {
bool_t changed; /* change flag */
partinfo_t info; /* partition information */
scheme_part_t data; /* scheme-specific data */
} partinfo_i_t;
/* Internal data structure: No data should be used from this structure
* in the application layer.
*/
typedef struct {
blkio_t *blkio; /* Device */
struct scheme *scheme; /* Scheme */
scheme_data_t data; /* Scheme-specific data */
u_int nr_partitions; /* Number of partitions */
partinfo_i_t **partinfo; /* Partition info */
} part_t;
#include "part/scheme.h"
/*
* Use this parn to tell part_create to allocate a partition number
*/
#define PARN_ALLOCATE (-1U)
#define PARN_ERROR (-2U)
#define VALIDOPS_UPDATE (1 << 0)
#define VALIDOPS_DELETE (1 << 1)
/* Prototype: u_int part_create(part_t *part, partinfo_t *pinfo)
* Function : Allocate a new partition slot `parn' and kernel partition number.
* Params : part - partitionable device
* : parn - partition number, or PARN_ALLOCATE to use first slot
* : pinfo - partition info structure to set new partition as
* Returns : FALSE on error
* Notes : Do not alter any structures on disk.
*/
u_int part_allocate(part_t *part, partinfo_t *pinfo);
/* Prototype: part_t *part_close (part_t *part)
* Function : Close and free all memory associated with this partition device.
* Params : part - partitionable device to close
* Returns : NULL
* Notes : If changes are outstanding, discard the changes.
*/
extern part_t *part_close(part_t *part);
/* Prototype: u_int part_create (part_t *part, u_int parn, const partinfo_t *pinfo)
* Function : Create a new partition in slot `parn' described by pinfo.
* Params : part - partitionable device
* : parn - partition number
* : pinfo - partition info structure to set new partition as
* Returns : FALSE on error
* Notes : If it already exists, complain. Do not alter any structures on disk.
*/
extern u_int part_create(part_t *part, u_int parn, const partinfo_t *pinfo);
/* Prototype: u_int part_delete (part_t *part, u_int parn)
* Function : Delete partition `parn'.
* Params : part - partitionable device
* : parn - partition number
* Returns : FALSE on error
* Notes : Do not alter any structures on disk.
*/
extern u_int part_delete(part_t *part, u_int parn);
/* Prototype: u_int part_getgeometry (part_t *part, geometry_t *geo)
* Function : Get the geometry of the drive.
* Params : part - partitionable device
* : geo - geometry structure
* Returns : FALSE on error
* Notes : Returns blkio's idea of geometry
*/
extern u_int part_getgeometry(part_t *part, geometry_t *geo);
/* Prototype: u_int part_getpartinfo (part_t *part, u_int parn, partinfo_t *pinfo)
* Function : Get the partition details for partition `parn'.
* Params : part - partitionable device
* : parn - partition number
* : pinfo - partition info structure to fill out
* Returns : FALSE on error
*/
extern u_int part_getpartinfo(part_t *part, u_int parn, partinfo_t *pinfo);
/* Prototype: const char *part_getscheme (part_t *part)
* Function : Get the partitioning scheme name.
* Params : part - partitionable device
* Returns : pointer to a string describing scheme, or NULL
*/
extern const char *part_getscheme(part_t *part);
/* Prototype: ptyp_t part_nexttype(part_t *part, u_int parn, ptyp_t current, int dir)
* Purpose : Return the next partition type
* Params : part - partiionable device
* : parn - partition number
* : current - current partition type
* : dir - increment (+1), or decrement (-1)
* Returns : next partition type
*/
extern ptyp_t part_nexttype(part_t *part, u_int parn, ptyp_t current, int dir);
/* Prototype: part_t *part_open (const char *dev_name, const char *part_scheme)
* Function : Open a device.
* Params : dev_name - OS specific device name
* : part_scheme - partitioning scheme
* Returns : pointer to part_t structure
* Notes : Reads all partitioning data on the drive
*/
extern part_t *part_open(const char *dev_name, const char *part_scheme);
/* Prototype: u_int part_read (part_t *part, u_int parn, void *data, blk_t blk, u_int nr_blks)
* Function : Read blocks from a partition
* Params : part - partitionable device
* : parn - partition number
* : data - data area to read into
* : blk - starting block
* : nr_blks - number of blocks to read
* Returns : actual number of blocks read
*/
extern u_int part_read(part_t *part, u_int parn, void *data, blk_t blk, u_int nr_blks);
/* Prototype: u_int part_setgeometry (part_t *part, const geometry_t *geo)
* Function : Set the geometry of the drive
* Params : part - partitionable device
* : geo - geometry
* Returns : FALSE on error
* Notes : This does not set the geometry that the OS' idea of the geometry.
*/
extern u_int part_setgeometry(part_t *part, const geometry_t *geo);
/* Prototype: u_int part_setpartinfo(part_t *part, u_int parn, const partinfo_t *pinfo)
* Function : Set partition details for partition
* Params : part - partitionable device
* : parn - partition number
* : pinfo - partition info structure to set partition
* Returns : FALSE on error
*/
extern u_int part_setpartinfo(part_t *part, u_int parn, const partinfo_t *pinfo);
/* Prototype: u_int part_sync (part_t *part)
* Function : Synchronise (write) partition information with disk.
* Params : part - partitionable device
* Returns : FALSE on error
*/
extern u_int part_sync(part_t *part);
/* Prototype: const char *part_typename(part_t *part, ptyp_t type)
* Purpose : Return the name of the partition type 'type'
* Params : part - partitionable device
* : type - partition type
* Returns : const pointer to NUL terminated string
*/
extern const char *part_typename(part_t *part, ptyp_t type);
/* Prototype: u_int part_updatechs(part_t *part, partinfo_t *pinfo)
* Purpose : Update CHS values if they have become invalid
* Params : part - partitionable device
* : pinfo - partition to update
* Returns : FALSE on error
*/
u_int part_updatechs(part_t *part, partinfo_t *pinfo);
/* Prototype: u_int part_validops (part_t *part, u_int parn, const partinfo_t *pinfo)
* Function : Returns a bitmask containing the valid operations that can be performed
* on the specified partition
* Params : part - partitionable device
* : parn - partition number
* Returns : bitmask of valid operations
*/
extern u_int part_validops(part_t *part, u_int parn, const partinfo_t *pinfo);
/* Prototype: u_int part_write (part_t *part, u_int parn, const void *data, blk_t blk, u_int nr_blks)
* Function : Write blocks to a partition
* Params : part - partitionable device
* : parn - parititon number
* : data - data to write
* : blk - starting block
* : nr_blks - number of blocks
* Returns : FALSE on error
*/
extern u_int part_write(part_t *part, u_int parn, const void *data, blk_t blk, u_int nr_blks);
#endif
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