fdasd/fdasd.h

   1 /*
   2  * File...........: s390-tools/fdasd/fdasd.h
   3  * Author(s)......: Volker Sameske <sameske@de.ibm.com>
   4  *                  Horst Hummel   <Horst.Hummel@de.ibm.com>
   5  * Copyright IBM Corp. 2001,2007
   6  */
   7
   8 #ifndef FDASD_H
   9 #define FDASD_H
  10
  11 /*****************************************************************************
  12  * SECTION: Definitions needed for DASD-API (see dasd.h)                     *
  13  *****************************************************************************/
  14
  15 #define DASD_IOCTL_LETTER 'D'
  16
  17 #define DASD_PARTN_BITS 2
  18
  19 /*
  20  * struct dasd_information_t
  21  * represents any data about the device, which is visible to userspace.
  22  *  including foramt and featueres.
  23  */
  24 typedef struct dasd_information_t {
  25         unsigned int devno;           /* S/390 devno                         */
  26         unsigned int real_devno;      /* for aliases                         */
  27         unsigned int schid;           /* S/390 subchannel identifier         */
  28         unsigned int cu_type  : 16;   /* from SenseID                        */
  29         unsigned int cu_model :  8;   /* from SenseID                        */
  30         unsigned int dev_type : 16;   /* from SenseID                        */
  31         unsigned int dev_model : 8;   /* from SenseID                        */
  32         unsigned int open_count;
  33         unsigned int req_queue_len;
  34         unsigned int chanq_len;       /* length of chanq                     */
  35         char type[4];                 /* from discipline.name, 'none' for    */
  36                                       /* unknown                             */
  37         unsigned int status;          /* current device level                */
  38         unsigned int label_block;     /* where to find the VOLSER            */
  39         unsigned int FBA_layout;      /* fixed block size (like AIXVOL)      */
  40         unsigned int characteristics_size;
  41         unsigned int confdata_size;
  42         char characteristics[64];     /* from read_device_characteristics    */
  43         char configuration_data[256]; /* from read_configuration_data        */
  44 } dasd_information_t;
  45
  46 /* Get information on a dasd device (enhanced) */
  47 #define BIODASDINFO   _IOR(DASD_IOCTL_LETTER,1,dasd_information_t)
  48
  49
  50 /*****************************************************************************
  51  * SECTION: Further IOCTL Definitions  (see fs.h and hdreq.h)                *
  52  *****************************************************************************/
  53 #define BLKROGET   _IO(0x12,94) /* get read-only status (0 = read_write) */
  54 #define BLKRRPART  _IO(0x12,95) /* re-read partition table */
  55 #define BLKSSZGET  _IO(0x12,104)/* get block device sector size */
  56 #define BLKGETSIZE64 _IOR(0x12,114,size_t) /* device size in bytes (u64 *arg)*/
  57
  58 /* get device geometry */
  59 #define HDIO_GETGEO             0x0301
  60
  61 /*****************************************************************************
  62  * SECTION: FDASD internal types                                             *
  63  *****************************************************************************/
  64
  65 #define DEFAULT_FDASD_CONF "/etc/fdasd.conf" /* default config file */
  66
  67 #define PARTN_MASK ((1 << DASD_PARTN_BITS) - 1)
  68 #define USABLE_PARTITIONS ((1 << DASD_PARTN_BITS) - 1)
  69
  70 #define FDASD_ERROR "fdasd error: "
  71 #define DEVICE "device"
  72 #define DISC   "disc"
  73 #define PART   "part"
  74
  75 #define ALTERNATE_CYLINDERS_USED 0x10
  76
  77 static struct option fdasd_long_options[] = {
  78         { "version",     no_argument,       NULL, 'v'},
  79         { "auto",        no_argument,       NULL, 'a'},
  80         { "silent",      no_argument,       NULL, 's'},
  81         { "verbose",     no_argument,       NULL, 'r'},
  82         { "label",       required_argument, NULL, 'l'},
  83         { "config",      required_argument, NULL, 'c'},
  84         { "help",        no_argument,       NULL, 'h'},
  85         { "table",       no_argument,       NULL, 'p'},
  86         { "volser",      no_argument,       NULL, 'i'},
  87         { "keep_volser", no_argument,       NULL, 'k'},
  88         { 0,             0,                 0,    0  }
  89 };
  90
  91 /* Command line option abbreviations */
  92 static const char option_string[] = "vasrl:c:hpik";
  93
  94 struct fdasd_options {
  95         char *device;
  96         char *volser;
  97         char *conffile;
  98 };
  99
 100 struct fdasd_options options = {
 101         NULL,           /* device   */
 102         NULL,           /* volser   */
 103         NULL,           /* conffile */
 104 };
 105
 106 typedef struct partition_info {
 107         u_int8_t           used;
 108         unsigned long      start_trk;
 109         unsigned long      end_trk;
 110         unsigned long      len_trk;
 111         unsigned long      fspace_trk;
 112         format1_label_t    *f1;
 113         struct partition_info *next;
 114         struct partition_info *prev;
 115 } partition_info_t;
 116
 117
 118 typedef struct config_data {
 119         unsigned long start;
 120         unsigned long stop;
 121 } config_data_t;
 122
 123
 124 typedef struct fdasd_anchor {
 125         int vlabel_changed;
 126         int vtoc_changed;
 127         int auto_partition;
 128         int print_table;
 129         int print_volser;
 130         int keep_volser;
 131         int big_disk;
 132         int silent;
 133         int verbose;
 134         int devno;
 135         int option_reuse;
 136         int option_recreate;
 137         int partno[USABLE_PARTITIONS];
 138         u_int16_t dev_type;
 139         unsigned int used_partitions;
 140         unsigned long label_pos;
 141         unsigned int  blksize;
 142         unsigned long fspace_trk;
 143         format4_label_t  *f4;
 144         format5_label_t  *f5;
 145         format7_label_t  *f7;
 146         format9_label_t  *f9; /* template for all f9 labels */
 147         partition_info_t *first;
 148         partition_info_t *last;
 149         volume_label_t   *vlabel;
 150         config_data_t confdata[USABLE_PARTITIONS];
 151         u_int32_t hw_cylinders;
 152         u_int32_t formatted_cylinders;
 153 } fdasd_anchor_t;
 154
 155 enum offset {lower, upper};
 156
 157 enum fdasd_failure {
 158         parser_failed,
 159         unable_to_open_disk,
 160         unable_to_seek_disk,
 161         unable_to_read_disk,
 162         read_only_disk,
 163         unable_to_ioctl,
 164         wrong_disk_type,
 165         wrong_disk_format,
 166         disk_in_use,
 167         config_syntax_error,
 168         vlabel_corrupted,
 169         dsname_corrupted,
 170         malloc_failed,
 171         device_verification_failed,
 172         volser_not_found
 173 };
 174
 175 #define ERROR_STRING_SIZE 1024
 176 #define INPUT_BUF_SIZE 1024
 177
 178 #endif /* FDASD_H */
 179
 180
 181
 182