cregit-Linux how code gets into the kernel

Release 4.10 fs/nfsd/blocklayoutxdr.h

Directory: fs/nfsd
#ifndef _NFSD_BLOCKLAYOUTXDR_H

#define _NFSD_BLOCKLAYOUTXDR_H 1

#include <linux/blkdev.h>
#include "xdr4.h"

struct iomap;
struct xdr_stream;


struct pnfs_block_extent {
	
struct nfsd4_deviceid		vol_id;
	
u64				foff;
	
u64				len;
	
u64				soff;
	
enum pnfs_block_extent_state	es;
};


struct pnfs_block_range {
	
u64				foff;
	
u64				len;
};

/*
 * Random upper cap for the uuid length to avoid unbounded allocation.
 * Not actually limited by the protocol.
 */

#define PNFS_BLOCK_UUID_LEN	128


struct pnfs_block_volume {
	
enum pnfs_block_volume_type	type;
	union {
		struct {
			
u64		offset;
			
u32		sig_len;
			
u8		sig[PNFS_BLOCK_UUID_LEN];
		} 
simple;
		struct {
			
enum scsi_code_set		code_set;
			
enum scsi_designator_type	designator_type;
			
int				designator_len;
			
u8				designator[256];
			
u64				pr_key;
		} 
scsi;
	};
};


struct pnfs_block_deviceaddr {
	
u32				nr_volumes;
	
struct pnfs_block_volume	volumes[];
};

__be32 nfsd4_block_encode_getdeviceinfo(struct xdr_stream *xdr,
		struct nfsd4_getdeviceinfo *gdp);
__be32 nfsd4_block_encode_layoutget(struct xdr_stream *xdr,
		struct nfsd4_layoutget *lgp);
int nfsd4_block_decode_layoutupdate(__be32 *p, u32 len, struct iomap **iomapp,
		u32 block_size);
int nfsd4_scsi_decode_layoutupdate(__be32 *p, u32 len, struct iomap **iomapp,
		u32 block_size);

#endif /* _NFSD_BLOCKLAYOUTXDR_H */

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christoph hellwigchristoph hellwig196100.00%2100.00%
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Directory: fs/nfsd
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