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b627b8d8e1
This commit is based on the s390-tools-1.39.0 version. Changes on top of s390-tools-1.39.0: - Add MIT license to all source files - Add LICENSE file - Transform REAMDE to README.md (markdown) - Add AUTHORS.md file - Add CONTRIBUTING.md file - Move changelog from README to CHANGELOG.md file Reviewed-by: Stefan Haberland <sth@linux.vnet.ibm.com> Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
261 lines
7.3 KiB
C
261 lines
7.3 KiB
C
/*
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* fdasd - Create or modify partitions on ECKD DASDs
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*
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* Copyright IBM Corp. 2001, 2017
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*
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* s390-tools is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*/
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#ifndef FDASD_H
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#define FDASD_H
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/*****************************************************************************
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* SECTION: Definitions needed for DASD-API (see dasd.h) *
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*****************************************************************************/
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#define DASD_IOCTL_LETTER 'D'
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#define DASD_PARTN_BITS 2
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/*
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* struct dasd_information_t
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* represents any data about the device, which is visible to userspace.
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* including foramt and featueres.
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*/
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typedef struct dasd_information_t {
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unsigned int devno; /* S/390 devno */
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unsigned int real_devno; /* for aliases */
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unsigned int schid; /* S/390 subchannel identifier */
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unsigned int cu_type : 16; /* from SenseID */
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unsigned int cu_model : 8; /* from SenseID */
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unsigned int dev_type : 16; /* from SenseID */
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unsigned int dev_model : 8; /* from SenseID */
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unsigned int open_count;
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unsigned int req_queue_len;
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unsigned int chanq_len; /* length of chanq */
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char type[4]; /* from discipline.name, 'none' for */
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/* unknown */
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unsigned int status; /* current device level */
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unsigned int label_block; /* where to find the VOLSER */
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unsigned int FBA_layout; /* fixed block size (like AIXVOL) */
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unsigned int characteristics_size;
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unsigned int confdata_size;
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char characteristics[64]; /* from read_device_characteristics */
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char configuration_data[256]; /* from read_configuration_data */
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} dasd_information_t;
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struct dasd_eckd_characteristics {
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unsigned short cu_type;
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struct {
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unsigned char support:2;
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unsigned char async:1;
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unsigned char reserved:1;
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unsigned char cache_info:1;
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unsigned char model:3;
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} __attribute__ ((packed)) cu_model;
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unsigned short dev_type;
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unsigned char dev_model;
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struct {
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unsigned char mult_burst:1;
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unsigned char RT_in_LR:1;
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unsigned char reserved1:1;
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unsigned char RD_IN_LR:1;
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unsigned char reserved2:4;
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unsigned char reserved3:8;
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unsigned char defect_wr:1;
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unsigned char XRC_supported:1;
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unsigned char reserved4:1;
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unsigned char striping:1;
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unsigned char reserved5:4;
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unsigned char cfw:1;
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unsigned char reserved6:2;
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unsigned char cache:1;
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unsigned char dual_copy:1;
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unsigned char dfw:1;
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unsigned char reset_alleg:1;
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unsigned char sense_down:1;
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} __attribute__ ((packed)) facilities;
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unsigned char dev_class;
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unsigned char unit_type;
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unsigned short no_cyl;
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unsigned short trk_per_cyl;
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unsigned char sec_per_trk;
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unsigned char byte_per_track[3];
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unsigned short home_bytes;
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unsigned char formula;
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union {
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struct {
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unsigned char f1;
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unsigned short f2;
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unsigned short f3;
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} __attribute__ ((packed)) f_0x01;
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struct {
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unsigned char f1;
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unsigned char f2;
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unsigned char f3;
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unsigned char f4;
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unsigned char f5;
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} __attribute__ ((packed)) f_0x02;
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} __attribute__ ((packed)) factors;
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unsigned short first_alt_trk;
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unsigned short no_alt_trk;
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unsigned short first_dia_trk;
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unsigned short no_dia_trk;
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unsigned short first_sup_trk;
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unsigned short no_sup_trk;
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unsigned char MDR_ID;
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unsigned char OBR_ID;
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unsigned char director;
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unsigned char rd_trk_set;
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unsigned short max_rec_zero;
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unsigned char reserved1;
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unsigned char RWANY_in_LR;
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unsigned char factor6;
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unsigned char factor7;
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unsigned char factor8;
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unsigned char reserved2[3];
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unsigned char reserved3[6];
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unsigned int long_no_cyl;
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} __attribute__ ((packed));
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/* Get information on a dasd device (enhanced) */
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#define BIODASDINFO _IOR(DASD_IOCTL_LETTER,1,dasd_information_t)
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/*****************************************************************************
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* SECTION: Further IOCTL Definitions (see fs.h and hdreq.h) *
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*****************************************************************************/
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#define BLKROGET _IO(0x12,94) /* get read-only status (0 = read_write) */
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#define BLKRRPART _IO(0x12,95) /* re-read partition table */
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#define BLKSSZGET _IO(0x12,104)/* get block device sector size */
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#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* device size in bytes (u64 *arg)*/
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/* get device geometry */
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#define HDIO_GETGEO 0x0301
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/*****************************************************************************
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* SECTION: FDASD internal types *
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*****************************************************************************/
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#define PARTN_MASK ((1 << DASD_PARTN_BITS) - 1)
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#define USABLE_PARTITIONS ((1 << DASD_PARTN_BITS) - 1)
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#define DEFAULT_FDASD_CONF "/etc/fdasd.conf" /* default config file */
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#define CONFIG_FILE_SIZE (USABLE_PARTITIONS * LINE_LENGTH)
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#define CONFIG_MAX 3 /* maximum number of parameters per config file entry */
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#define FDASD_ERROR "fdasd error: "
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#define DEVICE "device"
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#define DISC "disc"
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#define PART "part"
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#define ALTERNATE_CYLINDERS_USED 0x10
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/* partition types */
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#define PARTITION_NEW 0
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#define PARTITION_NATIVE 1
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#define PARTITION_SWAP 2
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#define PARTITION_RAID 3
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#define PARTITION_LVM 4
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#define PARTITION_GPFS 5
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/*
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* PARTITION_NEW is the first item in our partition_types array and technically
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* maps to PARTITION_NATIVE. As PARTITION_NEW isn't a valid partition_type, it
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* can be ignored. Use this offset when iterate over the array.
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*/
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#define VALID_PARTITION_OFFSET 1
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typedef struct partition_type {
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char *name; /* User-friendly Name */
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char *dsname; /* Data Set Name */
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int type; /* Numerical Representation */
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} partition_type_t;
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struct fdasd_options {
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char *device;
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char *volser;
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char *conffile;
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};
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static struct fdasd_options options = {
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NULL, /* device */
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NULL, /* volser */
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NULL, /* conffile */
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};
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typedef struct partition_info {
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u_int8_t used;
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unsigned long start_trk;
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unsigned long end_trk;
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unsigned long len_trk;
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unsigned long fspace_trk;
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format1_label_t *f1;
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int type;
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struct partition_info *next;
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struct partition_info *prev;
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} partition_info_t;
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typedef struct config_data {
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unsigned long start;
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unsigned long stop;
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int type;
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} config_data_t;
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typedef struct fdasd_anchor {
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int vlabel_changed;
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int vtoc_changed;
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int auto_partition;
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int print_table;
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int print_volser;
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int keep_volser;
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int force_virtual;
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int force_host;
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int big_disk;
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int silent;
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int verbose;
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int devno;
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int option_reuse;
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int option_recreate;
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int partno[USABLE_PARTITIONS];
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u_int16_t dev_type;
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unsigned int used_partitions;
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unsigned long label_pos;
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unsigned int blksize;
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unsigned long fspace_trk;
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format4_label_t *f4;
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format5_label_t *f5;
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format7_label_t *f7;
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format9_label_t *f9; /* template for all f9 labels */
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partition_info_t *first;
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partition_info_t *last;
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volume_label_t *vlabel;
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config_data_t confdata[USABLE_PARTITIONS];
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u_int32_t hw_cylinders;
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u_int32_t formatted_cylinders;
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} fdasd_anchor_t;
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enum offset {lower, upper};
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enum fdasd_failure {
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parser_failed,
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unable_to_open_disk,
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unable_to_seek_disk,
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unable_to_read_disk,
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read_only_disk,
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unable_to_ioctl,
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wrong_disk_type,
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wrong_disk_format,
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disk_in_use,
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config_syntax_error,
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vlabel_corrupted,
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dsname_corrupted,
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malloc_failed,
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device_verification_failed,
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volser_not_found
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};
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#define ERROR_STRING_SIZE 1024
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#define INPUT_BUF_SIZE 1024
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#endif /* FDASD_H */
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