GETDISKBYNAME(3-BSD)RISC/os Reference Manual GETDISKBYNAME(3-BSD)



NAME
     getdiskbyname - get disk description by its name

SYNOPSIS
     #include <disktab.h>

     struct disktab *
     getdiskbyname(name)
     char *name;

DESCRIPTION
     getdiskbyname takes a disk name (e.g. rm03) and returns a
     structure describing its geometry information and the stan-
     dard disk partition tables.  All information obtained from
     the disktab(5) file.

     <disktab.h> has the following form:

     #ifndef BSD43_
     #    include <bsd43/bsd43_.h>
     #endif BSD43_


     /*
      * Disk description table, see disktab(5)
      */

     #ifdef mips
     #include <bsd43/sys/types.h>
     #include <bsd43/mips/dvh.h>
     #endif

     #ifndef NPARTAB
     #define BSD43_NUPART     8
     #else
     /*
      * Number of user partitions is the total number of partitions minus
      * the volume header, sector forwarding, and entire volume partitions.
      */
     #define BSD43_NUPART     (NPARTAB - 3)
     #endif

     #define   BSD43_DISKTAB       "/etc/disktab"

     struct    bsd43_(disktab) {
          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 */



                        Printed 11/19/92                   Page 1

GETDISKBYNAME(3-BSD)RISC/os Reference Manual GETDISKBYNAME(3-BSD)



          int  d_badsectforw;      /* supports DEC bad144 std */
          int  d_sectoffset;       /* use sect rather than cyl offsets */
          struct    bsd43_(partition) {
               int  p_size;        /* #sectors in partition */
               short     p_bsize;  /* block size in bytes */
               short     p_fsize;  /* frag size in bytes */
          } d_partitions[8];
     };

     struct    bsd43_(disktab) *bsd43_(getdiskbyname)();

     /*----- NUMIPS: STRIP MACRO PREFIXES (BEGIN) ---------------------------------*/
     /*
      * Strip off "BSD43_" and "bsd43_" for use with standard BSD code.
      * (GENERATED AUTOMATICALLY -- DON'T EDIT BY HAND)
      */
     #ifdef SYSTYPE_BSD43
     #   define DISKTAB BSD43_DISKTAB
     #   define NUPART BSD43_NUPART
     #endif SYSTYPE_BSD43
     /*----- NUMIPS: STRIP MACRO PREFIXES (END) -----------------------------------*/



SEE ALSO
     disktab(5)

ERRORS
     This information should be obtained from the system for
     locally available disks (in particular, the disk partition
     tables).
























 Page 2                 Printed 11/19/92