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21.5.9 diskpart_get_type: Search for type type partitions

 

SYNOPSIS

#include <oskit/diskpart/diskpart.h>

int diskpart_get_type(struct diskpart *array, char *buf, int start, void *driver_info, int (*diskpart_read_func)(), int max_part);

DESCRIPTION

This function finds type type partitions if they are on the disk. These routines would not normally be invoked directly. However, the API is documented here so that diskpart_lookup can be extended easily for future or additional labeling schemes.

Currently defined functions are: pcbios, disklabel, vtoc, dec, and omron.

They should return immediately if diskpart_read_func returns non-zero, and return that error code.

PARAMETERS

array
Pointer to the start of preallocated storage.
buf
Pointer to a sector-sized scratch area.
start
Offset from start of disk the partition starts.
driver_info
A pointer to an initialized structure of user-defined type which is passed unmodified to diskpart_read_func.
diskpart_read_func
A function pointer provided by the user which can read a sector given driver_info.
max_part
Maximum number of partition entries that can be filled. This will generally be equal to the number of pre-allocated entries that are available.

RETURNS

Returns the number of partition entries of that type found. If none were found, it returns 0.

If the return value is equal to max_part then it is possible that there were more partitions than space for them. It is up to the user to ensure that adequate storage is passed to diskpart_get_partitions.

RELATED INFORMATION

diskpart_read_func


University of Utah Flux Research Group