8650b8a058
Add a small shim between core nfsd and filesystems to translate the somewhat cumbersome pNFS data structures and semantics to something more palatable for Linux filesystems. Thanks to Rick McNeal for the old prototype pNFS blocklayout server code, which gave a lot of inspiration to this version even if no code is left from it. Signed-off-by: Christoph Hellwig <hch@lst.de>
82 lines
2.2 KiB
C
82 lines
2.2 KiB
C
#ifndef _FS_NFSD_PNFS_H
|
|
#define _FS_NFSD_PNFS_H 1
|
|
|
|
#include <linux/exportfs.h>
|
|
#include <linux/nfsd/export.h>
|
|
|
|
#include "state.h"
|
|
#include "xdr4.h"
|
|
|
|
struct xdr_stream;
|
|
|
|
struct nfsd4_deviceid_map {
|
|
struct list_head hash;
|
|
u64 idx;
|
|
int fsid_type;
|
|
u32 fsid[];
|
|
};
|
|
|
|
struct nfsd4_layout_ops {
|
|
u32 notify_types;
|
|
|
|
__be32 (*proc_getdeviceinfo)(struct super_block *sb,
|
|
struct nfsd4_getdeviceinfo *gdevp);
|
|
__be32 (*encode_getdeviceinfo)(struct xdr_stream *xdr,
|
|
struct nfsd4_getdeviceinfo *gdevp);
|
|
|
|
__be32 (*proc_layoutget)(struct inode *, const struct svc_fh *fhp,
|
|
struct nfsd4_layoutget *lgp);
|
|
__be32 (*encode_layoutget)(struct xdr_stream *,
|
|
struct nfsd4_layoutget *lgp);
|
|
|
|
__be32 (*proc_layoutcommit)(struct inode *inode,
|
|
struct nfsd4_layoutcommit *lcp);
|
|
};
|
|
|
|
extern const struct nfsd4_layout_ops *nfsd4_layout_ops[];
|
|
extern const struct nfsd4_layout_ops bl_layout_ops;
|
|
|
|
__be32 nfsd4_preprocess_layout_stateid(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *cstate, stateid_t *stateid,
|
|
bool create, u32 layout_type, struct nfs4_layout_stateid **lsp);
|
|
__be32 nfsd4_insert_layout(struct nfsd4_layoutget *lgp,
|
|
struct nfs4_layout_stateid *ls);
|
|
__be32 nfsd4_return_file_layouts(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_layoutreturn *lrp);
|
|
__be32 nfsd4_return_client_layouts(struct svc_rqst *rqstp,
|
|
struct nfsd4_compound_state *cstate,
|
|
struct nfsd4_layoutreturn *lrp);
|
|
int nfsd4_set_deviceid(struct nfsd4_deviceid *id, const struct svc_fh *fhp,
|
|
u32 device_generation);
|
|
struct nfsd4_deviceid_map *nfsd4_find_devid_map(int idx);
|
|
|
|
#ifdef CONFIG_NFSD_PNFS
|
|
void nfsd4_setup_layout_type(struct svc_export *exp);
|
|
void nfsd4_return_all_client_layouts(struct nfs4_client *);
|
|
void nfsd4_return_all_file_layouts(struct nfs4_client *clp,
|
|
struct nfs4_file *fp);
|
|
int nfsd4_init_pnfs(void);
|
|
void nfsd4_exit_pnfs(void);
|
|
#else
|
|
static inline void nfsd4_setup_layout_type(struct svc_export *exp)
|
|
{
|
|
}
|
|
|
|
static inline void nfsd4_return_all_client_layouts(struct nfs4_client *clp)
|
|
{
|
|
}
|
|
static inline void nfsd4_return_all_file_layouts(struct nfs4_client *clp,
|
|
struct nfs4_file *fp)
|
|
{
|
|
}
|
|
static inline void nfsd4_exit_pnfs(void)
|
|
{
|
|
}
|
|
static inline int nfsd4_init_pnfs(void)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_NFSD_PNFS */
|
|
#endif /* _FS_NFSD_PNFS_H */
|