fsal_ds.c File Reference

#include "fsal.h"
#include "fsal_internal.h"
#include "fsal_convert.h"
#include "nfsv41.h"
#include <fcntl.h>
#include "HashTable.h"
#include <pthread.h>
#include "fsal_types.h"
#include "fsal_pnfs.h"
#include "pnfs_common.h"
#include "fsal_pnfs_files.h"

Go to the source code of this file.

Defines
#define	min(a, b)
Functions
nfsstat4	LUSTREFSAL_DS_read (fsal_handle_t *pfsalhandle, fsal_op_context_t *pfsalcontext, const stateid4 *stateid, offset4 offset, count4 requested_length, caddr_t buffer, count4 *pread_length, fsal_boolean_t *end_of_file)
nfsstat4	LUSTREFSAL_DS_write (fsal_handle_t *pfsalhandle, fsal_op_context_t *pfsalcontext, const stateid4 *stateid, offset4 offset, count4 write_length, caddr_t buffer, stable_how4 stability_wanted, count4 *pwritten_length, verifier4 writeverf, stable_how4 *stability_got)
nfsstat4	LUSTREFSAL_DS_commit (fsal_handle_t *pfsalhandle, fsal_op_context_t *pfsalcontext, offset4 offset, count4 count, verifier4 writeverf)

---

Define Documentation

#define min	(		a,
			b
	)

Value:

({ typeof (a) _a = (a);                    \
          typeof (b) _b = (b);                  \
          _a < _b ? _a : _b; })

Definition at line 50 of file FSAL_LUSTRE/fsal_ds.c.

---

Function Documentation

nfsstat4 LUSTREFSAL_DS_commit	(	fsal_handle_t *	pfsalhandle,
		fsal_op_context_t *	pfsalcontext,
		offset4	offset,
		count4	count,
		verifier4	writeverf
	)

LUSTREFSAL_DS_commit : commits an DS's unstable write.

This function commits an unstable write by the pNFS Data Server.

Parameters:

[IN]	pfsalhandle : handle for the object to be written
[IN]	pfsalcontent : FSAL's operation context
[IN]	offset : offset for this IO
[IN]	count : length to be commited
[IN]	verifier: operation's verifier (Why is this needed ?)

Returns:

a NFSv4 status

Definition at line 155 of file FSAL_LUSTRE/fsal_ds.c.

nfsstat4 LUSTREFSAL_DS_read	(	fsal_handle_t *	pfsalhandle,
		fsal_op_context_t *	pfsalcontext,
		const stateid4 *	stateid,
		offset4	offset,
		count4	requested_length,
		caddr_t	buffer,
		count4 *	pread_length,
		fsal_boolean_t *	end_of_file
	)

LUSTREFSAL_DS_read : the DS reads data to the FSAL.

This function is used by the pNFS Data Server to write data to the FSAL.

Parameters:

[IN]	pfsalhandle : handle for the object to be written
[IN]	pfsalcontent : FSAL's operation context
[IN]	stateid : pointer to the stateid to be used (Why is this needed ?)
[IN]	offset : offset for this IO
[IN]	requested_length : length to be read
[OUT]	buffer : place to put read data in
[OUT]	pread_length: length actually read
[IN]	verifier: operation's verifier (Why is this needed ?)
[OUT]	end_of_file : set to TRUE if eof is reached.

Returns:

a NFSv4 status

Definition at line 74 of file FSAL_LUSTRE/fsal_ds.c.

nfsstat4 LUSTREFSAL_DS_write	(	fsal_handle_t *	pfsalhandle,
		fsal_op_context_t *	pfsalcontext,
		const stateid4 *	stateid,
		offset4	offset,
		count4	write_length,
		caddr_t	buffer,
		stable_how4	stability_wanted,
		count4 *	pwritten_length,
		verifier4	writeverf,
		stable_how4 *	stability_got
	)

LUSTREFSAL_DS_write : the DS writes data to the FSAL.

This function is used by the pNFS Data Server to write data to the FSAL.

Parameters:

[IN]	pfsalhandle : handle for the object to be written
[IN]	pfsalcontent : FSAL's operation context
[IN]	stateid : pointer to the stateid to be used (Why is this needed ?)
[IN]	offset : offset for this IO
[IN]	write_length : length to be written
[IN]	buffer : data to be written
[IN]	stability_wanted: "stable how" flag for this IO
[OUT]	pwritten_length: length actually written
[IN]	verifier: operation's verifier (Why is this needed ?)
[OUT]	stability_got: the "stable_how" that was used for this IO

Returns:

a NFSv4 status

Definition at line 116 of file FSAL_LUSTRE/fsal_ds.c.