5c937cfa82
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21472 a95241bf-73f2-0310-859d-f6bbb57e9c96
126 lines
3.7 KiB
C
126 lines
3.7 KiB
C
//----------------------------------------------------------------------
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// This software is part of the OpenBeOS distribution and is covered
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// by the OpenBeOS license.
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//---------------------------------------------------------------------
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/*!
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\file partition.h
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hook function declarations for disk_scanner partition modules
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*/
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#ifndef _PARTSCAN_PARTITION_H
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#define _PARTSCAN_PARTITION_H
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#include <module.h>
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struct extended_partition_info;
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typedef bool (*partition_identify_hook)(int deviceFD,
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const struct session_info *session, const uchar *block);
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typedef status_t (*partition_get_nth_info_hook)(int deviceFD,
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const struct session_info *session, const uchar *block, int32 index,
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struct extended_partition_info *partitionInfo);
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typedef bool (*partition_identify_module_hook)(const char *identifier);
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typedef status_t (*partition_get_partitioning_params_hook)(int deviceFD,
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const struct session_info *sessionInfo, char *buffer, size_t bufferSize,
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size_t *actualSize);
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typedef status_t (*partition_partition_hook)(int deviceFD,
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const struct session_info *sessionInfo, const char *parameters);
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typedef struct partition_module_info {
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module_info module;
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const char *short_name;
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partition_identify_hook identify;
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partition_get_nth_info_hook get_nth_info;
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partition_get_partitioning_params_hook get_partitioning_params;
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partition_partition_hook partition;
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} partition_module_info;
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/*
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short_name:
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----------
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Identifies the module. That's the identifier to be passed to
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partition_session().
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identify():
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----------
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Checks whether the partition map of the given session can be recognized
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by the module. Returns true, if it can, false otherwise.
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params:
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deviceFD: a device FD
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sessionInfo: a complete info about the session the partitions reside on
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block: the first block of the session
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get_nth_info():
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--------------
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Fills in the following fields of partitionInfo with information about
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the indexth partition on the specified session:
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* offset
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* size
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* flags
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* partition_name
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* partition_type
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params:
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deviceFD: a device FD
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sessionInfo: a complete info about the session the partition resides on
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block: the first block of the session
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index: the partition index
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partitionInfo: the partition info
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The functions is only called, when a call to identify() returned
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true.
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Returns B_OK, if successful, B_ENTRY_NOT_FOUND, if the index is out of
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range.
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get_partitioning_params():
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-------------------------
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Returns parameters for partitioning the supplied session.
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If the session is already partitioned using this module, then the
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parameters describing the current layout will be returned, otherwise
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default values.
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If the supplied buffer is too small for the parameters, the function
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returns B_OK, but doesn't fill in the buffer; the required buffer
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size is returned in actualSize. If the buffer is large enough,
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actualSize is set to the actually used size. The size includes the
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terminating null.
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params:
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deviceFD: a device FD
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sessionInfo: a complete info about the session to be partitioned
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buffer: pointer to a pre-allocated buffer of size bufferSize
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bufferSize: the size of buffer
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actualSize: pointer to a pre-allocated size_t to be set to the
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actually needed buffer size
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Returns B_OK, if the parameters could be returned successfully or the
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buffer is too small, an error code otherwise.
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partition():
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-----------
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Partitions the specified session of the device according to the supplied
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parameters.
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params:
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deviceFD: a device FD
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sessionInfo: a complete info about the session to be partitioned
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parameters: the parameters for partitioning
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Returns B_OK, if everything went fine, an error code otherwise.
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*/
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#endif // _PARTSCAN_PARTITION_H
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