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/*
* File...........: s390-tools/fdasd/fdasd.h
* Author(s)......: Volker Sameske <sameske@de.ibm.com>
* Horst Hummel <Horst.Hummel@de.ibm.com>
* Bugreports.to..: <Linux390@de.ibm.com>
* (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 2001-2002
*
* History of changes (starts March 2001)
* version 1.01 - menu entry 's' to show mapping devnode - DS name
* 1.02 - DS names count now from 0001 instead from 0000
* 1.03 - volser checks: 'AA AAA' to 'AAAAA '
* - removed dependency to kernel headers.
* 1.04 - added -p option
* 1.05 - new API policy, set it back to 0
*/
#ifndef FDASD_H
#define FDASD_H
#include <parted/vtoc.h>
/*****************************************************************************
* SECTION: Definitions needed for DASD-API (see dasd.h) *
*****************************************************************************/
#define DASD_IOCTL_LETTER 'D'
#define DASD_PARTN_BITS 2
#define PARTITION_LINUX_SWAP 0x82
#define PARTITION_LINUX 0x83
#define PARTITION_LINUX_EXT 0x85
#define PARTITION_LINUX_LVM 0x8e
#define PARTITION_LINUX_RAID 0xfd
#define PARTITION_LINUX_LVM_OLD 0xfe
#define PART_TYPE_NATIVE "NATIVE"
#define PART_TYPE_SWAP "SWAP "
#define PART_TYPE_RAID "RAID "
#define PART_TYPE_LVM "LVM "
#ifdef DEBUG_DASD
#define PDEBUG fprintf(stderr, "%s:%d:%s\n", \
__FILE__, \
__LINE__, \
__PRETTY_FUNCTION__);
#else
#define PDEBUG
#endif
/*
* struct dasd_information_t
* represents any data about the device, which is visible to userspace.
* including foramt and featueres.
*/
typedef struct dasd_information_t {
unsigned int devno; /* S/390 devno */
unsigned int real_devno; /* for aliases */
unsigned int schid; /* S/390 subchannel identifier */
unsigned int cu_type : 16; /* from SenseID */
unsigned int cu_model : 8; /* from SenseID */
unsigned int dev_type : 16; /* from SenseID */
unsigned int dev_model : 8; /* from SenseID */
unsigned int open_count;
unsigned int req_queue_len;
unsigned int chanq_len; /* length of chanq */
char type[4]; /* from discipline.name, 'none' for */
/* unknown */
unsigned int status; /* current device level */
unsigned int label_block; /* where to find the VOLSER */
unsigned int FBA_layout; /* fixed block size (like AIXVOL) */
unsigned int characteristics_size;
unsigned int confdata_size;
char characteristics[64]; /* from read_device_characteristics */
char configuration_data[256]; /* from read_configuration_data */
} dasd_information_t;
struct dasd_eckd_characteristics {
unsigned short cu_type;
struct {
unsigned char support:2;
unsigned char async:1;
unsigned char reserved:1;
unsigned char cache_info:1;
unsigned char model:3;
} __attribute__ ((packed)) cu_model;
unsigned short dev_type;
unsigned char dev_model;
struct {
unsigned char mult_burst:1;
unsigned char RT_in_LR:1;
unsigned char reserved1:1;
unsigned char RD_IN_LR:1;
unsigned char reserved2:4;
unsigned char reserved3:8;
unsigned char defect_wr:1;
unsigned char XRC_supported:1;
unsigned char reserved4:1;
unsigned char striping:1;
unsigned char reserved5:4;
unsigned char cfw:1;
unsigned char reserved6:2;
unsigned char cache:1;
unsigned char dual_copy:1;
unsigned char dfw:1;
unsigned char reset_alleg:1;
unsigned char sense_down:1;
} __attribute__ ((packed)) facilities;
unsigned char dev_class;
unsigned char unit_type;
unsigned short no_cyl;
unsigned short trk_per_cyl;
unsigned char sec_per_trk;
unsigned char byte_per_track[3];
unsigned short home_bytes;
unsigned char formula;
union {
struct {
unsigned char f1;
unsigned short f2;
unsigned short f3;
} __attribute__ ((packed)) f_0x01;
struct {
unsigned char f1;
unsigned char f2;
unsigned char f3;
unsigned char f4;
unsigned char f5;
} __attribute__ ((packed)) f_0x02;
} __attribute__ ((packed)) factors;
unsigned short first_alt_trk;
unsigned short no_alt_trk;
unsigned short first_dia_trk;
unsigned short no_dia_trk;
unsigned short first_sup_trk;
unsigned short no_sup_trk;
unsigned char MDR_ID;
unsigned char OBR_ID;
unsigned char director;
unsigned char rd_trk_set;
unsigned short max_rec_zero;
unsigned char reserved1;
unsigned char RWANY_in_LR;
unsigned char factor6;
unsigned char factor7;
unsigned char factor8;
unsigned char reserved2[3];
unsigned char reserved3[6];
unsigned int long_no_cyl;
} __attribute__ ((packed));
/*
* struct format_data_t
* represents all data necessary to format a dasd
*/
typedef struct format_data_t {
int start_unit; /* from track */
int stop_unit; /* to track */
int blksize; /* sectorsize */
int intensity;
} format_data_t;
/*
* values to be used for format_data_t.intensity
* 0/8: normal format
* 1/9: also write record zero
* 3/11: also write home address
* 4/12: invalidate track
*/
#define DASD_FMT_INT_FMT_R0 1 /* write record zero */
#define DASD_FMT_INT_FMT_HA 2 /* write home address, also set FMT_R0 ! */
#define DASD_FMT_INT_INVAL 4 /* invalidate tracks */
#define DASD_FMT_INT_COMPAT 8 /* use OS/390 compatible disk layout */
/* Disable the volume (for Linux) */
#define BIODASDDISABLE _IO(DASD_IOCTL_LETTER,0)
/* Enable the volume (for Linux) */
#define BIODASDENABLE _IO(DASD_IOCTL_LETTER,1)
/* retrieve API version number */
#define DASDAPIVER _IOR(DASD_IOCTL_LETTER,0,int)
/* Get information on a dasd device (enhanced) */
#define BIODASDINFO _IOR(DASD_IOCTL_LETTER,1,dasd_information_t)
/*****************************************************************************
* SECTION: Further IOCTL Definitions (see fs.h) *
*****************************************************************************/
#define BLKROGET _IO(0x12,94) /* get read-only status (0 = read_write) */
/* re-read partition table */
#define BLKRRPART _IO(0x12,95)
/* get block device sector size */
#define BLKSSZGET _IO(0x12,104)
/* device size in bytes (u64 *arg)*/
#define BLKGETSIZE64 _IOR(0x12,114,size_t)
/* get device geometry */
#define HDIO_GETGEO 0x0301
/*****************************************************************************
* SECTION: FDASD internal types *
*****************************************************************************/
#define PARTN_MASK ((1 << DASD_PARTN_BITS) - 1)
#define USABLE_PARTITIONS ((1 << DASD_PARTN_BITS) - 1)
#define DASD_MIN_API_VERSION 0
#define DEFAULT_FDASD_CONF "/etc/fdasd.conf" /* default config file */
#define FDASD_VERSION "1.32.0"
#define DEVICE "device"
#define DISC "disc"
#define PART "part"
#define ALTERNATE_CYLINDERS_USED 0x10
typedef struct partition_info {
u_int8_t used;
unsigned long start_trk;
unsigned long end_trk;
unsigned long len_trk;
unsigned long fspace_trk;
format1_label_t *f1;
struct partition_info *next;
struct partition_info *prev;
u_int8_t type;
} partition_info_t;
typedef struct config_data {
unsigned long start;
unsigned long stop;
} config_data_t;
typedef struct fdasd_anchor {
int vlabel_changed;
int vtoc_changed;
int auto_partition;
int print_table;
int big_disk;
int silent;
int verbose;
int devno;
int option_reuse;
int option_recreate;
int partno[USABLE_PARTITIONS];
u_int16_t dev_type;
unsigned int used_partitions;
unsigned long label_pos;
unsigned int blksize;
unsigned long fspace_trk;
format4_label_t *f4;
format5_label_t *f5;
format7_label_t *f7;
format9_label_t *f9; /* template for all f9 labels */
partition_info_t *first;
partition_info_t *last;
volume_label_t *vlabel;
config_data_t confdata[USABLE_PARTITIONS];
u_int32_t hw_cylinders;
u_int32_t formatted_cylinders;
struct fdasd_hd_geometry geo;
unsigned int label_block;
unsigned int FBA_layout;
bool is_file;
} fdasd_anchor_t;
enum offset {lower, upper};
enum fdasd_failure {
unable_to_open_disk,
unable_to_seek_disk,
unable_to_read_disk,
read_only_disk,
unable_to_ioctl,
api_version_mismatch,
wrong_disk_type,
wrong_disk_format,
disk_in_use,
config_syntax_error,
vlabel_corrupted,
dsname_corrupted,
malloc_failed,
device_verification_failed,
volser_not_found
};
void fdasd_cleanup (fdasd_anchor_t *anchor);
void fdasd_initialize_anchor (fdasd_anchor_t * anc);
int fdasd_get_geometry (const PedDevice *dev, fdasd_anchor_t *anc, int fd);
void fdasd_check_api_version (fdasd_anchor_t *anc, int fd);
int fdasd_check_volume (fdasd_anchor_t *anc, int fd);
int fdasd_write_labels (fdasd_anchor_t *anc, int fd);
void fdasd_recreate_vtoc(fdasd_anchor_t *anc);
partition_info_t * fdasd_add_partition (fdasd_anchor_t *anc,
unsigned int start, unsigned int stop);
int fdasd_prepare_labels (fdasd_anchor_t *anc, int fd) ;
void fdasd_check_volser(char *volser, int devno);
int fdasd_get_volser(fdasd_anchor_t *anc, char *volser, int fd);
void fdasd_change_volser(fdasd_anchor_t *anc, char *str);
void fdasd_reuse_vtoc(fdasd_anchor_t *anc);
#endif /* FDASD_H */
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