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Diffstat (limited to 'include/parted/vtoc.in.h')
| -rw-r--r-- | include/parted/vtoc.in.h | 336 |
1 files changed, 336 insertions, 0 deletions
diff --git a/include/parted/vtoc.in.h b/include/parted/vtoc.in.h new file mode 100644 index 0000000..d79ce39 --- /dev/null +++ b/include/parted/vtoc.in.h @@ -0,0 +1,336 @@ +/* + * File...........: s390-tools/dasdview/vtoc.h + * Author(s)......: Horst Hummel <horst.hummel@de.ibm.com> + * Bugreports.to..: <Linux390@de.ibm.com> + * + * This is a user-space copy of the kernel vtoc,h. + * + * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 2002 + * + * History of changes (starts March 2002) + * 2002-03-12 initial + */ + +#ifndef VTOC_H +#define VTOC_H + +#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> + +#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 + + +typedef struct ttr ttr_t; +typedef struct cchhb cchhb_t; +typedef struct cchh cchh_t; +typedef struct labeldate labeldate_t; +typedef struct volume_label volume_label_t; +typedef struct cms_volume_label cms_volume_label_t; +typedef struct ldl_volume_label ldl_volume_label_t; +typedef struct extent extent_t; +typedef struct dev_const dev_const_t; +typedef struct format1_label format1_label_t; +typedef struct format4_label format4_label_t; +typedef struct ds5ext ds5ext_t; +typedef struct format5_label format5_label_t; +typedef struct ds7ext ds7ext_t; +typedef struct format7_label format7_label_t; + +struct __attribute__ ((packed)) ttr { + u_int16_t tt; + u_int8_t r; +}; + +struct __attribute__ ((packed)) cchhb { + u_int16_t cc; + u_int16_t hh; + u_int8_t b; +}; + +struct __attribute__ ((packed)) cchh { + u_int16_t cc; + u_int16_t hh; +}; + +struct __attribute__ ((packed)) labeldate { + u_int8_t year; + u_int16_t day; +}; + +struct __attribute__ ((packed)) volume_label { + char volkey[4]; /* volume key = volume label */ + char vollbl[4]; /* volume label ("VOL1" in EBCDIC) */ + char volid[6]; /* volume identifier */ + u_int8_t 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 */ + char fudge[4]; /* filler to match length of ldl label */ +}; + +struct __attribute__ ((packed)) ldl_volume_label { + char vollbl[4]; /* Label identifier ("LNX1" in EBCDIC) */ + char volid[6]; /* Volume identifier */ + char res3[69]; /* Reserved field */ + char ldl_version[1]; /* Version number, valid for ldl format */ + u_int64_t formatted_blocks; /* valid when ldl_version >= "2" (in + EBCDIC) */ +}; + +/* + * See: + * z/VM V5R2.0 CMS Planning and Administration + * SC24-6078-01 + * What CMS Does / Disk and File Management / Disk File Format + * http://publib.boulder.ibm.com/infocenter/zvm/v5r4/topic/com.ibm.zvm.v54.dmsd1/hcsg2b1018.htm + */ +struct __attribute__ ((packed)) cms_volume_label { + char label_id[4]; /* Label identifier ("CMS1" in EBCDIC) */ + char vol_id[6]; /* Volume identifier */ + char version_id[2]; /* Version identifier ("\0\0") */ + u_int32_t block_size; /* Disk block size (512, 1024, 2048 or 4096) */ + u_int32_t origin_ptr; /* Disk origin pointer (4 or 5) */ + u_int32_t usable_count; /* Number of usable cylinders/blocks */ + u_int32_t formatted_count; /* Max # of formatted cylinders/blocks */ + u_int32_t block_count; /* Disk size in CMS blocks */ + u_int32_t used_count; /* Number of CMS blocks in use */ + u_int32_t fst_size; /* File Status Table (FST) size (64) */ + u_int32_t fst_count; /* Number of FSTs per CMS block */ + char format_date[6]; /* Disk FORMAT date (YYMMDDhhmmss) */ + char reserved1[2]; /* Reserved fields. + The low-order bit of the first byte is a + century flag. 0 = 1900s, 1 = 2000s. + It is used in conjunction with + "format_date" to determine the + four-digit year. */ + u_int32_t disk_offset; /* Offset in blocks to the start of the + reserved file when the disk is reserved. + This is the number of blocks to skip + before the partition starts. */ + u_int32_t map_block; /* Allocation map block with next hole */ + u_int32_t hblk_disp; /* Displacement in HBLK data of next hole */ + u_int32_t user_disp; /* Disp into user part of allocation map */ + u_int32_t open_files; /* Count of SFS open files for this ADT. + open_files is not really part of the + volume label. It is not used for + minidisks. */ + char segment_name[8]; /* Name of the shared segment. + segment_name is not really part of the + volume label. It is not stored on disk. */ +}; + +struct __attribute__ ((packed)) extent { + u_int8_t typeind; /* extent type indicator */ + u_int8_t seqno; /* extent sequence number */ + cchh_t llimit; /* starting point of this extent */ + cchh_t ulimit; /* ending point of this extent */ +}; + +struct __attribute__ ((packed)) dev_const { + u_int16_t DS4DSCYL; /* number of logical cyls */ + u_int16_t DS4DSTRK; /* number of tracks in a logical cylinder */ + u_int16_t DS4DEVTK; /* device track length */ + u_int8_t DS4DEVI; /* non-last keyed record overhead */ + u_int8_t DS4DEVL; /* last keyed record overhead */ + u_int8_t DS4DEVK; /* non-keyed record overhead differential */ + u_int8_t DS4DEVFG; /* flag byte */ + u_int16_t DS4DEVTL; /* device tolerance */ + u_int8_t DS4DEVDT; /* number of DSCB's per track */ + u_int8_t DS4DEVDB; /* number of directory blocks per track */ +}; + +struct __attribute__ ((packed)) format1_label { + char DS1DSNAM[44]; /* data set name */ + u_int8_t DS1FMTID; /* format identifier */ + char DS1DSSN[6]; /* data set serial number */ + u_int16_t DS1VOLSQ; /* volume sequence number */ + labeldate_t DS1CREDT; /* creation date: ydd */ + labeldate_t DS1EXPDT; /* expiration date */ + u_int8_t DS1NOEPV; /* number of extents on volume */ + u_int8_t DS1NOBDB; /* no. of bytes used in last direction blk */ + u_int8_t DS1FLAG1; /* flag 1 */ + char DS1SYSCD[13]; /* system code */ + labeldate_t DS1REFD; /* date last referenced */ + u_int8_t DS1SMSFG; /* system managed storage indicators */ + u_int8_t DS1SCXTF; /* sec. space extension flag byte */ + u_int16_t DS1SCXTV; /* secondary space extension value */ + u_int8_t DS1DSRG1; /* data set organisation byte 1 */ + u_int8_t DS1DSRG2; /* data set organisation byte 2 */ + u_int8_t DS1RECFM; /* record format */ + u_int8_t DS1OPTCD; /* option code */ + u_int16_t DS1BLKL; /* block length */ + u_int16_t DS1LRECL; /* record length */ + u_int8_t DS1KEYL; /* key length */ + u_int16_t DS1RKP; /* relative key position */ + u_int8_t DS1DSIND; /* data set indicators */ + u_int8_t DS1SCAL1; /* secondary allocation flag byte */ + char DS1SCAL3[3]; /* secondary allocation quantity */ + ttr_t DS1LSTAR; /* last used track and block on track */ + u_int16_t DS1TRBAL; /* space remaining on last used track */ + u_int16_t 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 */ +}; + +struct __attribute__ ((packed)) format4_label { + char DS4KEYCD[44]; /* key code for VTOC labels: 44 times 0x04 */ + u_int8_t DS4IDFMT; /* format identifier */ + cchhb_t DS4HPCHR; /* highest address of a format 1 DSCB */ + u_int16_t DS4DSREC; /* number of available DSCB's */ + cchh_t DS4HCCHH; /* CCHH of next available alternate track */ + u_int16_t DS4NOATK; /* number of remaining alternate tracks */ + u_int8_t DS4VTOCI; /* VTOC indicators */ + u_int8_t DS4NOEXT; /* number of extents in VTOC */ + u_int8_t DS4SMSFG; /* system managed storage indicators */ + u_int8_t 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 */ + u_int8_t DS4EFLVL; /* extended free-space management level */ + cchhb_t DS4EFPTR; /* pointer to extended free-space info */ + char res3[9]; /* reserved */ +}; + +struct __attribute__ ((packed)) ds5ext { + u_int16_t t; /* RTA of the first track of free extent */ + u_int16_t fc; /* number of whole cylinders in free ext. */ + u_int8_t ft; /* number of remaining free tracks */ +}; + +struct __attribute__ ((packed)) format5_label { + char DS5KEYID[4]; /* key identifier */ + ds5ext_t DS5AVEXT; /* first available (free-space) extent. */ + ds5ext_t DS5EXTAV[7]; /* seven available extents */ + u_int8_t DS5FMTID; /* format identifier */ + ds5ext_t DS5MAVET[18]; /* eighteen available extents */ + cchhb_t DS5PTRDS; /* pointer to next format5 DSCB */ +}; + +struct __attribute__ ((packed)) ds7ext { + u_int32_t a; /* starting RTA value */ + u_int32_t b; /* ending RTA value + 1 */ +}; + +struct __attribute__ ((packed)) format7_label { + char DS7KEYID[4]; /* key identifier */ + ds7ext_t DS7EXTNT[5]; /* space for 5 extent descriptions */ + u_int8_t DS7FMTID; /* format identifier */ + ds7ext_t DS7ADEXT[11]; /* space for 11 extent descriptions */ + char res1[2]; /* reserved */ + cchhb_t DS7PTRDS; /* pointer to next FMT7 DSCB */ +}; + +char *vtoc_ebcdic_enc (char const *source, char *target, int l); +char *vtoc_ebcdic_dec (char const *source, char *target, int l); +void vtoc_set_extent (extent_t *ext, u_int8_t typeind, u_int8_t seqno, + cchh_t *lower, cchh_t *upper); +void vtoc_set_cchh (cchh_t *addr, u_int16_t cc, u_int16_t hh); +void vtoc_set_cchhb (cchhb_t *addr, u_int16_t cc, u_int16_t hh, u_int8_t b); +void vtoc_set_date (labeldate_t *d, u_int8_t year, u_int16_t day); + +void vtoc_volume_label_init (volume_label_t *vlabel); + +int vtoc_read_volume_label (int fd, unsigned long vlabel_start, + volume_label_t *vlabel); + +int vtoc_write_volume_label (int fd, unsigned long vlabel_start, + volume_label_t const *vlabel); + +void vtoc_volume_label_set_volser (volume_label_t *vlabel, char const *volser); + +char *vtoc_volume_label_get_volser (volume_label_t *vlabel, char *volser); + +void vtoc_volume_label_set_key (volume_label_t *vlabel, char const *key); + +void vtoc_volume_label_set_label (volume_label_t *vlabel, char const *lbl); + +char *vtoc_volume_label_get_label (volume_label_t *vlabel, char *lbl); + +void vtoc_read_label (int fd, unsigned long position, format1_label_t *f1, + format4_label_t *f4, format5_label_t *f5, + format7_label_t *f7); + +void vtoc_write_label (int fd, unsigned long position, + format1_label_t const *f1, + format4_label_t const *f4, + format5_label_t const *f5, + format7_label_t const *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, + u_int16_t dev_type); + +void vtoc_update_format4_label (format4_label_t *f4, cchhb_t *highest_f1, + u_int16_t 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, u_int16_t a, u_int16_t b, + u_int8_t c); + +void vtoc_update_format5_label_del (format5_label_t *f5, int verbose, int cyl, + int trk, u_int16_t a, u_int16_t b, + u_int8_t c); + +void vtoc_init_format7_label (format7_label_t *f7); + +void vtoc_update_format7_label_add (format7_label_t *f7, int verbose, + u_int32_t a, u_int32_t b); + +void vtoc_update_format7_label_del (format7_label_t *f7, int verbose, + u_int32_t a, u_int32_t b); + +void vtoc_set_freespace(format4_label_t *f4, format5_label_t *f5, + format7_label_t *f7, char ch, int verbose, + u_int32_t start, u_int32_t stop, int cyl, int trk); + +#endif /* VTOC_H */ |