/* * fdasd - Create or modify partitions on ECKD DASDs * * Copyright IBM Corp. 2001, 2017 * * s390-tools is free software; you can redistribute it and/or modify * it under the terms of the MIT license. See LICENSE for details. */ #ifndef FDASD_H #define FDASD_H /***************************************************************************** * SECTION: Definitions needed for DASD-API (see dasd.h) * *****************************************************************************/ #define DASD_IOCTL_LETTER 'D' #define DASD_PARTN_BITS 2 /* * 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)); /* Get information on a dasd device (enhanced) */ #define BIODASDINFO _IOR(DASD_IOCTL_LETTER,1,dasd_information_t) /***************************************************************************** * SECTION: Further IOCTL Definitions (see fs.h and hdreq.h) * *****************************************************************************/ #define BLKROGET _IO(0x12,94) /* get read-only status (0 = read_write) */ #define BLKRRPART _IO(0x12,95) /* re-read partition table */ #define BLKSSZGET _IO(0x12,104)/* get block device sector size */ #define BLKGETSIZE64 _IOR(0x12,114,size_t) /* device size in bytes (u64 *arg)*/ /* 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 DEFAULT_FDASD_CONF "/etc/fdasd.conf" /* default config file */ #define CONFIG_FILE_SIZE (USABLE_PARTITIONS * LINE_LENGTH) #define CONFIG_MAX 3 /* maximum number of parameters per config file entry */ #define FDASD_ERROR "fdasd error: " #define DEVICE "device" #define DISC "disc" #define PART "part" #define ALTERNATE_CYLINDERS_USED 0x10 /* partition types */ #define PARTITION_NEW 0 #define PARTITION_NATIVE 1 #define PARTITION_SWAP 2 #define PARTITION_RAID 3 #define PARTITION_LVM 4 #define PARTITION_GPFS 5 /* * PARTITION_NEW is the first item in our partition_types array and technically * maps to PARTITION_NATIVE. As PARTITION_NEW isn't a valid partition_type, it * can be ignored. Use this offset when iterate over the array. */ #define VALID_PARTITION_OFFSET 1 typedef struct partition_type { char *name; /* User-friendly Name */ char *dsname; /* Data Set Name */ int type; /* Numerical Representation */ } partition_type_t; struct fdasd_options { char *device; char *volser; char *conffile; }; static struct fdasd_options options = { NULL, /* device */ NULL, /* volser */ NULL, /* conffile */ }; 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; int type; struct partition_info *next; struct partition_info *prev; } partition_info_t; typedef struct config_data { unsigned long start; unsigned long stop; int type; } config_data_t; typedef struct fdasd_anchor { int vlabel_changed; int vtoc_changed; int auto_partition; int print_table; int print_volser; int keep_volser; int force_virtual; int force_host; 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; } fdasd_anchor_t; enum offset {lower, upper}; enum fdasd_failure { parser_failed, unable_to_open_disk, unable_to_seek_disk, unable_to_read_disk, read_only_disk, unable_to_ioctl, wrong_disk_type, wrong_disk_format, disk_in_use, config_syntax_error, vlabel_corrupted, dsname_corrupted, malloc_failed, device_verification_failed, volser_not_found }; #define ERROR_STRING_SIZE 1024 #define INPUT_BUF_SIZE 1024 #endif /* FDASD_H */