disktab(5) [ultrix man page]

disktab(5)							File Formats Manual							disktab(5)

Name
       disktab - disk description file

Syntax
       #include <disktab.h>

Description
       The file is a simple data base that describes disk geometries and disk partition characteristics.  The format is patterned after the termi-
       nal data base.  Entries in consist of a number of fields separated by colons (:).  The first entry for each disk gives the names  that  are
       known for the disk, separated by vertical bars (|).  The last name given should be a long name fully identifying the disk.

       The following list indicates the normal values stored for each disk entry:
       Name Type Description
       ns   num  Number of sectors per track
       nt   num  Number of tracks per cylinder
       nc   num  Total number of cylinders on the disk
       ba   num  Block size for partition `a' (bytes)
       bd   num  Block size for partition `d' (bytes)
       be   num  Block size for partition `e' (bytes)
       bf   num  Block size for partition `f' (bytes)
       bg   num  Block size for partition `g' (bytes)
       bh   num  Block size for partition `h' (bytes)
       fa   num  Fragment size for partition `a' (bytes)
       fd   num  Fragment size for partition `d' (bytes)
       fe   num  Fragment size for partition `e' (bytes)
       ff   num  Fragment size for partition `f' (bytes)
       fg   num  Fragment size for partition `g' (bytes)
       fh   num  Fragment size for partition `h' (bytes)
       pa   num  Size of partition `a' in sectors
       pb   num  Size of partition `b' in sectors
       pc   num  Size of partition `c' in sectors
       pd   num  Size of partition `d' in sectors
       pe   num  Size of partition `e' in sectors
       pf   num  Size of partition `f' in sectors
       pg   num  Size of partition `g' in sectors
       ph   num  Size of partition `h' in sectors
       se   num  Sector size in bytes
       ty   str  Type of disk (e.g. removable, winchester)

       The entries can be automatically generated with the program.

Files
See Also
       chpt(8), newfs(8)

																	disktab(5)

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getdiskbyname(3C)														 getdiskbyname(3C)

NAME

       getdiskbyname() - get disk description by its name

SYNOPSIS

   Obsolescent Interface
DESCRIPTION

       takes a disk name (such as hp7959B) and returns a pointer to a structure that describes its geometry information and the standard disk par-
       tition tables.  All information is obtained from the disktab database file (see disktab(4)).

       The contents of the structure include the following members.  Note that there is not necessarily any correlation between the  placement	in
       this list and the order in the structure.

	      char    *d_name;		  /* drive name */
	      char    *d_type;		  /* drive type */
	      int     d_secsize;	  /* sector size in bytes */
	      int     d_ntracks;	  /* # tracks/cylinder */
	      int     d_nsectors;	  /* # sectors/track */
	      int     d_ncylinders;	  /* # cylinders */
	      int     d_rpm;		  /* revolutions/minute */
	      struct  partition {
		      int     p_size;	  /* #sectors in partition */
		      short   p_bsize;	  /* block size in bytes */
		      short   p_fsize;	  /* frag size in bytes */
	      } d_partitions[NSECTIONS];

       The constant is defined in

   Obsolescent Interface
       gets disk description by its name.

DIAGNOSTICS

       A NULL pointer is returned in case of an error, or if name is not found in the disktab database file.

WARNINGS

       The  return value for points to data whose content is overwritten by each call.	is an obsolescent interface supported only for compatibil-
       ity with existing DCE applications. New multithreaded applications should use

AUTHOR

       was developed by HP and the University of California, Berkeley.

SEE ALSO

       disktab(4), thread_safety(5).

																 getdiskbyname(3C)

Linux and UNIX Man Pages

disktab(5) [ultrix man page]

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