diff options
Diffstat (limited to 'include/asm-s390/vtoc.h')
| -rw-r--r-- | include/asm-s390/vtoc.h | 372 |
1 files changed, 372 insertions, 0 deletions
diff --git a/include/asm-s390/vtoc.h b/include/asm-s390/vtoc.h new file mode 100644 index 00000000000..a14e34e80b8 --- /dev/null +++ b/include/asm-s390/vtoc.h @@ -0,0 +1,372 @@ +#ifndef __KERNEL__ +#include <string.h> +#include <stdlib.h> +#include <stdio.h> +#include <errno.h> +#include <ctype.h> +#include <time.h> +#include <fcntl.h> +#include <unistd.h> + +#include <sys/stat.h> +#include <sys/ioctl.h> + +#include <linux/fs.h> +#include <linux/types.h> +#include <linux/hdreg.h> +#include <asm/dasd.h> +#endif + + +#define LINE_LENGTH 80 +#define VTOC_START_CC 0x0 +#define VTOC_START_HH 0x1 +#define FIRST_USABLE_CYL 1 +#define FIRST_USABLE_TRK 2 + +#define DASD_3380_TYPE 13148 +#define DASD_3390_TYPE 13200 +#define DASD_9345_TYPE 37701 + +#define DASD_3380_VALUE 0xbb60 +#define DASD_3390_VALUE 0xe5a2 +#define DASD_9345_VALUE 0xbc98 + +#define VOLSER_LENGTH 6 +#define BIG_DISK_SIZE 0x10000 + +#define VTOC_ERROR "VTOC error:" + + +typedef struct ttr +{ + __u16 tt; + __u8 r; +} __attribute__ ((packed)) ttr_t; + +typedef struct cchhb +{ + __u16 cc; + __u16 hh; + __u8 b; +} __attribute__ ((packed)) cchhb_t; + +typedef struct cchh +{ + __u16 cc; + __u16 hh; +} __attribute__ ((packed)) cchh_t; + +typedef struct labeldate +{ + __u8 year; + __u16 day; +} __attribute__ ((packed)) labeldate_t; + + +typedef struct volume_label +{ + char volkey[4]; /* volume key = volume label */ + char vollbl[4]; /* volume label */ + char volid[6]; /* volume identifier */ + __u8 security; /* security byte */ + cchhb_t vtoc; /* VTOC address */ + char res1[5]; /* reserved */ + char cisize[4]; /* CI-size for FBA,... */ + /* ...blanks for CKD */ + char blkperci[4]; /* no of blocks per CI (FBA), blanks for CKD */ + char labperci[4]; /* no of labels per CI (FBA), blanks for CKD */ + char res2[4]; /* reserved */ + char lvtoc[14]; /* owner code for LVTOC */ + char res3[29]; /* reserved */ +} __attribute__ ((packed)) volume_label_t; + + +typedef struct extent +{ + __u8 typeind; /* extent type indicator */ + __u8 seqno; /* extent sequence number */ + cchh_t llimit; /* starting point of this extent */ + cchh_t ulimit; /* ending point of this extent */ +} __attribute__ ((packed)) extent_t; + + +typedef struct dev_const +{ + __u16 DS4DSCYL; /* number of logical cyls */ + __u16 DS4DSTRK; /* number of tracks in a logical cylinder */ + __u16 DS4DEVTK; /* device track length */ + __u8 DS4DEVI; /* non-last keyed record overhead */ + __u8 DS4DEVL; /* last keyed record overhead */ + __u8 DS4DEVK; /* non-keyed record overhead differential */ + __u8 DS4DEVFG; /* flag byte */ + __u16 DS4DEVTL; /* device tolerance */ + __u8 DS4DEVDT; /* number of DSCB's per track */ + __u8 DS4DEVDB; /* number of directory blocks per track */ +} __attribute__ ((packed)) dev_const_t; + + +typedef struct format1_label +{ + char DS1DSNAM[44]; /* data set name */ + __u8 DS1FMTID; /* format identifier */ + char DS1DSSN[6]; /* data set serial number */ + __u16 DS1VOLSQ; /* volume sequence number */ + labeldate_t DS1CREDT; /* creation date: ydd */ + labeldate_t DS1EXPDT; /* expiration date */ + __u8 DS1NOEPV; /* number of extents on volume */ + __u8 DS1NOBDB; /* no. of bytes used in last direction blk */ + __u8 DS1FLAG1; /* flag 1 */ + char DS1SYSCD[13]; /* system code */ + labeldate_t DS1REFD; /* date last referenced */ + __u8 DS1SMSFG; /* system managed storage indicators */ + __u8 DS1SCXTF; /* sec. space extension flag byte */ + __u16 DS1SCXTV; /* secondary space extension value */ + __u8 DS1DSRG1; /* data set organisation byte 1 */ + __u8 DS1DSRG2; /* data set organisation byte 2 */ + __u8 DS1RECFM; /* record format */ + __u8 DS1OPTCD; /* option code */ + __u16 DS1BLKL; /* block length */ + __u16 DS1LRECL; /* record length */ + __u8 DS1KEYL; /* key length */ + __u16 DS1RKP; /* relative key position */ + __u8 DS1DSIND; /* data set indicators */ + __u8 DS1SCAL1; /* secondary allocation flag byte */ + char DS1SCAL3[3]; /* secondary allocation quantity */ + ttr_t DS1LSTAR; /* last used track and block on track */ + __u16 DS1TRBAL; /* space remaining on last used track */ + __u16 res1; /* reserved */ + extent_t DS1EXT1; /* first extent description */ + extent_t DS1EXT2; /* second extent description */ + extent_t DS1EXT3; /* third extent description */ + cchhb_t DS1PTRDS; /* possible pointer to f2 or f3 DSCB */ +} __attribute__ ((packed)) format1_label_t; + + +typedef struct format4_label +{ + char DS4KEYCD[44]; /* key code for VTOC labels: 44 times 0x04 */ + __u8 DS4IDFMT; /* format identifier */ + cchhb_t DS4HPCHR; /* highest address of a format 1 DSCB */ + __u16 DS4DSREC; /* number of available DSCB's */ + cchh_t DS4HCCHH; /* CCHH of next available alternate track */ + __u16 DS4NOATK; /* number of remaining alternate tracks */ + __u8 DS4VTOCI; /* VTOC indicators */ + __u8 DS4NOEXT; /* number of extents in VTOC */ + __u8 DS4SMSFG; /* system managed storage indicators */ + __u8 DS4DEVAC; /* number of alternate cylinders. + Subtract from first two bytes of + DS4DEVSZ to get number of usable + cylinders. can be zero. valid + only if DS4DEVAV on. */ + dev_const_t DS4DEVCT; /* device constants */ + char DS4AMTIM[8]; /* VSAM time stamp */ + char DS4AMCAT[3]; /* VSAM catalog indicator */ + char DS4R2TIM[8]; /* VSAM volume/catalog match time stamp */ + char res1[5]; /* reserved */ + char DS4F6PTR[5]; /* pointer to first format 6 DSCB */ + extent_t DS4VTOCE; /* VTOC extent description */ + char res2[10]; /* reserved */ + __u8 DS4EFLVL; /* extended free-space management level */ + cchhb_t DS4EFPTR; /* pointer to extended free-space info */ + char res3[9]; /* reserved */ +} __attribute__ ((packed)) format4_label_t; + + +typedef struct ds5ext +{ + __u16 t; /* RTA of the first track of free extent */ + __u16 fc; /* number of whole cylinders in free ext. */ + __u8 ft; /* number of remaining free tracks */ +} __attribute__ ((packed)) ds5ext_t; + + +typedef struct format5_label +{ + char DS5KEYID[4]; /* key identifier */ + ds5ext_t DS5AVEXT; /* first available (free-space) extent. */ + ds5ext_t DS5EXTAV[7]; /* seven available extents */ + __u8 DS5FMTID; /* format identifier */ + ds5ext_t DS5MAVET[18]; /* eighteen available extents */ + cchhb_t DS5PTRDS; /* pointer to next format5 DSCB */ +} __attribute__ ((packed)) format5_label_t; + + +typedef struct ds7ext +{ + __u32 a; /* starting RTA value */ + __u32 b; /* ending RTA value + 1 */ +} __attribute__ ((packed)) ds7ext_t; + + +typedef struct format7_label +{ + char DS7KEYID[4]; /* key identifier */ + ds7ext_t DS7EXTNT[5]; /* space for 5 extent descriptions */ + __u8 DS7FMTID; /* format identifier */ + ds7ext_t DS7ADEXT[11]; /* space for 11 extent descriptions */ + char res1[2]; /* reserved */ + cchhb_t DS7PTRDS; /* pointer to next FMT7 DSCB */ +} __attribute__ ((packed)) format7_label_t; + + +char * vtoc_ebcdic_enc ( + unsigned char source[LINE_LENGTH], + unsigned char target[LINE_LENGTH], + int l); +char * vtoc_ebcdic_dec ( + unsigned char source[LINE_LENGTH], + unsigned char target[LINE_LENGTH], + int l); +void vtoc_set_extent ( + extent_t * ext, + __u8 typeind, + __u8 seqno, + cchh_t * lower, + cchh_t * upper); +void vtoc_set_cchh ( + cchh_t * addr, + __u16 cc, + __u16 hh); +void vtoc_set_cchhb ( + cchhb_t * addr, + __u16 cc, + __u16 hh, + __u8 b); +void vtoc_set_date ( + labeldate_t * d, + __u8 year, + __u16 day); + +void vtoc_volume_label_init ( + volume_label_t *vlabel); + +int vtoc_read_volume_label ( + char * device, + unsigned long vlabel_start, + volume_label_t * vlabel); + +int vtoc_write_volume_label ( + char *device, + unsigned long vlabel_start, + volume_label_t *vlabel); + +void vtoc_volume_label_set_volser ( + volume_label_t *vlabel, + char *volser); + +char *vtoc_volume_label_get_volser ( + volume_label_t *vlabel, + char *volser); + +void vtoc_volume_label_set_key ( + volume_label_t *vlabel, + char *key); + +void vtoc_volume_label_set_label ( + volume_label_t *vlabel, + char *lbl); + +char *vtoc_volume_label_get_label ( + volume_label_t *vlabel, + char *lbl); + +void vtoc_read_label ( + char *device, + unsigned long position, + format1_label_t *f1, + format4_label_t *f4, + format5_label_t *f5, + format7_label_t *f7); + +void vtoc_write_label ( + char *device, + unsigned long position, + format1_label_t *f1, + format4_label_t *f4, + format5_label_t *f5, + format7_label_t *f7); + + +void vtoc_init_format1_label ( + char *volid, + unsigned int blksize, + extent_t *part_extent, + format1_label_t *f1); + + +void vtoc_init_format4_label ( + format4_label_t *f4lbl, + unsigned int usable_partitions, + unsigned int cylinders, + unsigned int tracks, + unsigned int blocks, + unsigned int blksize, + __u16 dev_type); + +void vtoc_update_format4_label ( + format4_label_t *f4, + cchhb_t *highest_f1, + __u16 unused_update); + + +void vtoc_init_format5_label ( + format5_label_t *f5); + +void vtoc_update_format5_label_add ( + format5_label_t *f5, + int verbose, + int cyl, + int trk, + __u16 a, + __u16 b, + __u8 c); + +void vtoc_update_format5_label_del ( + format5_label_t *f5, + int verbose, + int cyl, + int trk, + __u16 a, + __u16 b, + __u8 c); + + +void vtoc_init_format7_label ( + format7_label_t *f7); + +void vtoc_update_format7_label_add ( + format7_label_t *f7, + int verbose, + __u32 a, + __u32 b); + +void vtoc_update_format7_label_del ( + format7_label_t *f7, + int verbose, + __u32 a, + __u32 b); + + +void vtoc_set_freespace( + format4_label_t *f4, + format5_label_t *f5, + format7_label_t *f7, + char ch, + int verbose, + __u32 start, + __u32 stop, + int cyl, + int trk); + + + + + + + + + + + + |