include/linux/nfsd/nfsd.h - linux-imx - Git at Google


            
            /*

            
             * linux/include/linux/nfsd/nfsd.h

            
             *

            
             * Hodge-podge collection of knfsd-related stuff.

            
             * I will sort this out later.

            
             *

            
             * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>

            
             */


            #ifndef LINUX_NFSD_NFSD_H

            
            #define LINUX_NFSD_NFSD_H


            #include <linux/types.h>

            
            #include <linux/unistd.h>

            
            #include <linux/fs.h>

            
            #include <linux/posix_acl.h>

            
            #include <linux/mount.h>


            #include <linux/nfsd/debug.h>

            
            #include <linux/nfsd/nfsfh.h>

            
            #include <linux/nfsd/export.h>

            
            #include <linux/nfsd/stats.h>

            
            /*

            
             * nfsd version

            
             */

            
            #define NFSD_VERSION		"0.5"

            
            #define NFSD_SUPPORTED_MINOR_VERSION	0


            /*

            
             * Flags for nfsd_permission

            
             */

            
            #define NFSD_MAY_NOP		0

            
            #define NFSD_MAY_EXEC		1 /* == MAY_EXEC */

            
            #define NFSD_MAY_WRITE		2 /* == MAY_WRITE */

            
            #define NFSD_MAY_READ		4 /* == MAY_READ */

            
            #define NFSD_MAY_SATTR		8

            
            #define NFSD_MAY_TRUNC		16

            
            #define NFSD_MAY_LOCK		32

            
            #define NFSD_MAY_OWNER_OVERRIDE	64

            
            #define NFSD_MAY_LOCAL_ACCESS	128 /* IRIX doing local access check on device special file*/

            
            #define NFSD_MAY_BYPASS_GSS_ON_ROOT 256


            #define NFSD_MAY_CREATE		(NFSD_MAY_EXEC|NFSD_MAY_WRITE)

            
            #define NFSD_MAY_REMOVE		(NFSD_MAY_EXEC|NFSD_MAY_WRITE|NFSD_MAY_TRUNC)


            /*

            
             * Callback function for readdir

            
             */

            
            struct readdir_cd {

            
            	__be32			err;	/* 0, nfserr, or nfserr_eof */

            
            };

            
            typedef int (*nfsd_dirop_t)(struct inode *, struct dentry *, int, int);


            extern struct svc_program	nfsd_program;

            
            extern struct svc_version	nfsd_version2, nfsd_version3,

            
            				nfsd_version4;

            
            extern struct mutex		nfsd_mutex;

            
            extern struct svc_serv		*nfsd_serv;


            extern struct seq_operations nfs_exports_op;


            /*

            
             * Function prototypes.

            
             */

            
            int		nfsd_svc(unsigned short port, int nrservs);

            
            int		nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp);


            int		nfsd_nrthreads(void);

            
            int		nfsd_nrpools(void);

            
            int		nfsd_get_nrthreads(int n, int *);

            
            int		nfsd_set_nrthreads(int n, int *);


            /* nfsd/vfs.c */

            
            int		fh_lock_parent(struct svc_fh *, struct dentry *);

            
            int		nfsd_racache_init(int);

            
            void		nfsd_racache_shutdown(void);

            
            int		nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp,

            
            		                struct svc_export **expp);

            
            __be32		nfsd_lookup(struct svc_rqst *, struct svc_fh *,

            
            				const char *, unsigned int, struct svc_fh *);

            
            __be32		 nfsd_lookup_dentry(struct svc_rqst *, struct svc_fh *,

            
            				const char *, unsigned int,

            
            				struct svc_export **, struct dentry **);

            
            __be32		nfsd_setattr(struct svc_rqst *, struct svc_fh *,

            
            				struct iattr *, int, time_t);

            
            #ifdef CONFIG_NFSD_V4

            
            __be32          nfsd4_set_nfs4_acl(struct svc_rqst *, struct svc_fh *,

            
                                struct nfs4_acl *);

            
            int             nfsd4_get_nfs4_acl(struct svc_rqst *, struct dentry *, struct nfs4_acl **);

            
            #endif /* CONFIG_NFSD_V4 */

            
            __be32		nfsd_create(struct svc_rqst *, struct svc_fh *,

            
            				char *name, int len, struct iattr *attrs,

            
            				int type, dev_t rdev, struct svc_fh *res);

            
            #ifdef CONFIG_NFSD_V3

            
            __be32		nfsd_access(struct svc_rqst *, struct svc_fh *, u32 *, u32 *);

            
            __be32		nfsd_create_v3(struct svc_rqst *, struct svc_fh *,

            
            				char *name, int len, struct iattr *attrs,

            
            				struct svc_fh *res, int createmode,

            
            				u32 *verifier, int *truncp, int *created);

            
            __be32		nfsd_commit(struct svc_rqst *, struct svc_fh *,

            
            				loff_t, unsigned long);

            
            #endif /* CONFIG_NFSD_V3 */

            
            __be32		nfsd_open(struct svc_rqst *, struct svc_fh *, int,

            
            				int, struct file **);

            
            void		nfsd_close(struct file *);

            
            __be32 		nfsd_read(struct svc_rqst *, struct svc_fh *, struct file *,

            
            				loff_t, struct kvec *, int, unsigned long *);

            
            __be32 		nfsd_write(struct svc_rqst *, struct svc_fh *,struct file *,

            
            				loff_t, struct kvec *,int, unsigned long, int *);

            
            __be32		nfsd_readlink(struct svc_rqst *, struct svc_fh *,

            
            				char *, int *);

            
            __be32		nfsd_symlink(struct svc_rqst *, struct svc_fh *,

            
            				char *name, int len, char *path, int plen,

            
            				struct svc_fh *res, struct iattr *);

            
            __be32		nfsd_link(struct svc_rqst *, struct svc_fh *,

            
            				char *, int, struct svc_fh *);

            
            __be32		nfsd_rename(struct svc_rqst *,

            
            				struct svc_fh *, char *, int,

            
            				struct svc_fh *, char *, int);

            
            __be32		nfsd_remove(struct svc_rqst *,

            
            				struct svc_fh *, char *, int);

            
            __be32		nfsd_unlink(struct svc_rqst *, struct svc_fh *, int type,

            
            				char *name, int len);

            
            int		nfsd_truncate(struct svc_rqst *, struct svc_fh *,

            
            				unsigned long size);

            
            __be32		nfsd_readdir(struct svc_rqst *, struct svc_fh *,

            
            			     loff_t *, struct readdir_cd *, filldir_t);

            
            __be32		nfsd_statfs(struct svc_rqst *, struct svc_fh *,

            
            				struct kstatfs *, int access);


            int		nfsd_notify_change(struct inode *, struct iattr *);

            
            __be32		nfsd_permission(struct svc_rqst *, struct svc_export *,

            
            				struct dentry *, int);

            
            int		nfsd_sync_dir(struct dentry *dp);


            #if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL)

            
            #ifdef CONFIG_NFSD_V2_ACL

            
            extern struct svc_version nfsd_acl_version2;

            
            #else

            
            #define nfsd_acl_version2 NULL

            
            #endif

            
            #ifdef CONFIG_NFSD_V3_ACL

            
            extern struct svc_version nfsd_acl_version3;

            
            #else

            
            #define nfsd_acl_version3 NULL

            
            #endif

            
            struct posix_acl *nfsd_get_posix_acl(struct svc_fh *, int);

            
            int nfsd_set_posix_acl(struct svc_fh *, int, struct posix_acl *);

            
            #endif


            enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL };

            
            int nfsd_vers(int vers, enum vers_op change);

            
            void nfsd_reset_versions(void);

            
            int nfsd_create_serv(void);


            extern int nfsd_max_blksize;


            /*

            
             * NFSv4 State

            
             */

            
            #ifdef CONFIG_NFSD_V4

            
            extern unsigned int max_delegations;

            
            int nfs4_state_init(void);

            
            void nfsd4_free_slabs(void);

            
            void nfs4_state_start(void);

            
            void nfs4_state_shutdown(void);

            
            time_t nfs4_lease_time(void);

            
            void nfs4_reset_lease(time_t leasetime);

            
            int nfs4_reset_recoverydir(char *recdir);

            
            #else

            
            static inline int nfs4_state_init(void) { return 0; }

            
            static inline void nfsd4_free_slabs(void) { }

            
            static inline void nfs4_state_start(void) { }

            
            static inline void nfs4_state_shutdown(void) { }

            
            static inline time_t nfs4_lease_time(void) { return 0; }

            
            static inline void nfs4_reset_lease(time_t leasetime) { }

            
            static inline int nfs4_reset_recoverydir(char *recdir) { return 0; }

            
            #endif


            /*

            
             * lockd binding

            
             */

            
            void		nfsd_lockd_init(void);

            
            void		nfsd_lockd_shutdown(void);


            /*

            
             * These macros provide pre-xdr'ed values for faster operation.

            
             */

            
            #define	nfs_ok			__constant_htonl(NFS_OK)

            
            #define	nfserr_perm		__constant_htonl(NFSERR_PERM)

            
            #define	nfserr_noent		__constant_htonl(NFSERR_NOENT)

            
            #define	nfserr_io		__constant_htonl(NFSERR_IO)

            
            #define	nfserr_nxio		__constant_htonl(NFSERR_NXIO)

            
            #define	nfserr_eagain		__constant_htonl(NFSERR_EAGAIN)

            
            #define	nfserr_acces		__constant_htonl(NFSERR_ACCES)

            
            #define	nfserr_exist		__constant_htonl(NFSERR_EXIST)

            
            #define	nfserr_xdev		__constant_htonl(NFSERR_XDEV)

            
            #define	nfserr_nodev		__constant_htonl(NFSERR_NODEV)

            
            #define	nfserr_notdir		__constant_htonl(NFSERR_NOTDIR)

            
            #define	nfserr_isdir		__constant_htonl(NFSERR_ISDIR)

            
            #define	nfserr_inval		__constant_htonl(NFSERR_INVAL)

            
            #define	nfserr_fbig		__constant_htonl(NFSERR_FBIG)

            
            #define	nfserr_nospc		__constant_htonl(NFSERR_NOSPC)

            
            #define	nfserr_rofs		__constant_htonl(NFSERR_ROFS)

            
            #define	nfserr_mlink		__constant_htonl(NFSERR_MLINK)

            
            #define	nfserr_opnotsupp	__constant_htonl(NFSERR_OPNOTSUPP)

            
            #define	nfserr_nametoolong	__constant_htonl(NFSERR_NAMETOOLONG)

            
            #define	nfserr_notempty		__constant_htonl(NFSERR_NOTEMPTY)

            
            #define	nfserr_dquot		__constant_htonl(NFSERR_DQUOT)

            
            #define	nfserr_stale		__constant_htonl(NFSERR_STALE)

            
            #define	nfserr_remote		__constant_htonl(NFSERR_REMOTE)

            
            #define	nfserr_wflush		__constant_htonl(NFSERR_WFLUSH)

            
            #define	nfserr_badhandle	__constant_htonl(NFSERR_BADHANDLE)

            
            #define	nfserr_notsync		__constant_htonl(NFSERR_NOT_SYNC)

            
            #define	nfserr_badcookie	__constant_htonl(NFSERR_BAD_COOKIE)

            
            #define	nfserr_notsupp		__constant_htonl(NFSERR_NOTSUPP)

            
            #define	nfserr_toosmall		__constant_htonl(NFSERR_TOOSMALL)

            
            #define	nfserr_serverfault	__constant_htonl(NFSERR_SERVERFAULT)

            
            #define	nfserr_badtype		__constant_htonl(NFSERR_BADTYPE)

            
            #define	nfserr_jukebox		__constant_htonl(NFSERR_JUKEBOX)

            
            #define	nfserr_denied		__constant_htonl(NFSERR_DENIED)

            
            #define	nfserr_deadlock		__constant_htonl(NFSERR_DEADLOCK)

            
            #define nfserr_expired          __constant_htonl(NFSERR_EXPIRED)

            
            #define	nfserr_bad_cookie	__constant_htonl(NFSERR_BAD_COOKIE)

            
            #define	nfserr_same		__constant_htonl(NFSERR_SAME)

            
            #define	nfserr_clid_inuse	__constant_htonl(NFSERR_CLID_INUSE)

            
            #define	nfserr_stale_clientid	__constant_htonl(NFSERR_STALE_CLIENTID)

            
            #define	nfserr_resource		__constant_htonl(NFSERR_RESOURCE)

            
            #define	nfserr_moved		__constant_htonl(NFSERR_MOVED)

            
            #define	nfserr_nofilehandle	__constant_htonl(NFSERR_NOFILEHANDLE)

            
            #define	nfserr_minor_vers_mismatch	__constant_htonl(NFSERR_MINOR_VERS_MISMATCH)

            
            #define nfserr_share_denied	__constant_htonl(NFSERR_SHARE_DENIED)

            
            #define nfserr_stale_stateid	__constant_htonl(NFSERR_STALE_STATEID)

            
            #define nfserr_old_stateid	__constant_htonl(NFSERR_OLD_STATEID)

            
            #define nfserr_bad_stateid	__constant_htonl(NFSERR_BAD_STATEID)

            
            #define nfserr_bad_seqid	__constant_htonl(NFSERR_BAD_SEQID)

            
            #define	nfserr_symlink		__constant_htonl(NFSERR_SYMLINK)

            
            #define	nfserr_not_same		__constant_htonl(NFSERR_NOT_SAME)

            
            #define	nfserr_restorefh	__constant_htonl(NFSERR_RESTOREFH)

            
            #define	nfserr_attrnotsupp	__constant_htonl(NFSERR_ATTRNOTSUPP)

            
            #define	nfserr_bad_xdr		__constant_htonl(NFSERR_BAD_XDR)

            
            #define	nfserr_openmode		__constant_htonl(NFSERR_OPENMODE)

            
            #define	nfserr_locks_held	__constant_htonl(NFSERR_LOCKS_HELD)

            
            #define	nfserr_op_illegal	__constant_htonl(NFSERR_OP_ILLEGAL)

            
            #define	nfserr_grace		__constant_htonl(NFSERR_GRACE)

            
            #define	nfserr_no_grace		__constant_htonl(NFSERR_NO_GRACE)

            
            #define	nfserr_reclaim_bad	__constant_htonl(NFSERR_RECLAIM_BAD)

            
            #define	nfserr_badname		__constant_htonl(NFSERR_BADNAME)

            
            #define	nfserr_cb_path_down	__constant_htonl(NFSERR_CB_PATH_DOWN)

            
            #define	nfserr_locked		__constant_htonl(NFSERR_LOCKED)

            
            #define	nfserr_wrongsec		__constant_htonl(NFSERR_WRONGSEC)

            
            #define	nfserr_replay_me	__constant_htonl(NFSERR_REPLAY_ME)


            /* error codes for internal use */

            
            /* if a request fails due to kmalloc failure, it gets dropped.

            
             *  Client should resend eventually

            
             */

            
            #define	nfserr_dropit		__constant_htonl(30000)

            
            /* end-of-file indicator in readdir */

            
            #define	nfserr_eof		__constant_htonl(30001)


            /* Check for dir entries '.' and '..' */

            
            #define isdotent(n, l)	(l < 3 && n[0] == '.' && (l == 1 || n[1] == '.'))


            /*

            
             * Time of server startup

            
             */

            
            extern struct timeval	nfssvc_boot;


            #ifdef CONFIG_NFSD_V4


            /* before processing a COMPOUND operation, we have to check that there

            
             * is enough space in the buffer for XDR encode to succeed.  otherwise,

            
             * we might process an operation with side effects, and be unable to

            
             * tell the client that the operation succeeded.

            
             *

            
             * COMPOUND_SLACK_SPACE - this is the minimum bytes of buffer space

            
             * needed to encode an "ordinary" _successful_ operation.  (GETATTR,

            
             * READ, READDIR, and READLINK have their own buffer checks.)  if we

            
             * fall below this level, we fail the next operation with NFS4ERR_RESOURCE.

            
             *

            
             * COMPOUND_ERR_SLACK_SPACE - this is the minimum bytes of buffer space

            
             * needed to encode an operation which has failed with NFS4ERR_RESOURCE.

            
             * care is taken to ensure that we never fall below this level for any

            
             * reason.

            
             */

            
            #define	COMPOUND_SLACK_SPACE		140    /* OP_GETFH */

            
            #define COMPOUND_ERR_SLACK_SPACE	12     /* OP_SETATTR */


            #define NFSD_LEASE_TIME                 (nfs4_lease_time())

            
            #define NFSD_LAUNDROMAT_MINTIMEOUT      10   /* seconds */


            /*

            
             * The following attributes are currently not supported by the NFSv4 server:

            
             *    ARCHIVE       (deprecated anyway)

            
             *    HIDDEN        (unlikely to be supported any time soon)

            
             *    MIMETYPE      (unlikely to be supported any time soon)

            
             *    QUOTA_*       (will be supported in a forthcoming patch)

            
             *    SYSTEM        (unlikely to be supported any time soon)

            
             *    TIME_BACKUP   (unlikely to be supported any time soon)

            
             *    TIME_CREATE   (unlikely to be supported any time soon)

            
             */

            
            #define NFSD_SUPPORTED_ATTRS_WORD0                                                          \

            
            (FATTR4_WORD0_SUPPORTED_ATTRS   | FATTR4_WORD0_TYPE         | FATTR4_WORD0_FH_EXPIRE_TYPE   \

            
             | FATTR4_WORD0_CHANGE          | FATTR4_WORD0_SIZE         | FATTR4_WORD0_LINK_SUPPORT     \

            
             | FATTR4_WORD0_SYMLINK_SUPPORT | FATTR4_WORD0_NAMED_ATTR   | FATTR4_WORD0_FSID             \

            
             | FATTR4_WORD0_UNIQUE_HANDLES  | FATTR4_WORD0_LEASE_TIME   | FATTR4_WORD0_RDATTR_ERROR     \

            
             | FATTR4_WORD0_ACLSUPPORT      | FATTR4_WORD0_CANSETTIME   | FATTR4_WORD0_CASE_INSENSITIVE \

            
             | FATTR4_WORD0_CASE_PRESERVING | FATTR4_WORD0_CHOWN_RESTRICTED                             \

            
             | FATTR4_WORD0_FILEHANDLE      | FATTR4_WORD0_FILEID       | FATTR4_WORD0_FILES_AVAIL      \

            
             | FATTR4_WORD0_FILES_FREE      | FATTR4_WORD0_FILES_TOTAL  | FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_HOMOGENEOUS      \

            
             | FATTR4_WORD0_MAXFILESIZE     | FATTR4_WORD0_MAXLINK      | FATTR4_WORD0_MAXNAME          \

            
             | FATTR4_WORD0_MAXREAD         | FATTR4_WORD0_MAXWRITE     | FATTR4_WORD0_ACL)


            #define NFSD_SUPPORTED_ATTRS_WORD1                                                          \

            
            (FATTR4_WORD1_MODE              | FATTR4_WORD1_NO_TRUNC     | FATTR4_WORD1_NUMLINKS         \

            
             | FATTR4_WORD1_OWNER	        | FATTR4_WORD1_OWNER_GROUP  | FATTR4_WORD1_RAWDEV           \

            
             | FATTR4_WORD1_SPACE_AVAIL     | FATTR4_WORD1_SPACE_FREE   | FATTR4_WORD1_SPACE_TOTAL      \

            
             | FATTR4_WORD1_SPACE_USED      | FATTR4_WORD1_TIME_ACCESS  | FATTR4_WORD1_TIME_ACCESS_SET  \

            
             | FATTR4_WORD1_TIME_DELTA   | FATTR4_WORD1_TIME_METADATA    \

            
             | FATTR4_WORD1_TIME_MODIFY     | FATTR4_WORD1_TIME_MODIFY_SET | FATTR4_WORD1_MOUNTED_ON_FILEID)


            /* These will return ERR_INVAL if specified in GETATTR or READDIR. */

            
            #define NFSD_WRITEONLY_ATTRS_WORD1							    \

            
            (FATTR4_WORD1_TIME_ACCESS_SET   | FATTR4_WORD1_TIME_MODIFY_SET)


            /* These are the only attrs allowed in CREATE/OPEN/SETATTR. */

            
            #define NFSD_WRITEABLE_ATTRS_WORD0                                                          \

            
            (FATTR4_WORD0_SIZE              | FATTR4_WORD0_ACL                                         )

            
            #define NFSD_WRITEABLE_ATTRS_WORD1                                                          \

            
            (FATTR4_WORD1_MODE              | FATTR4_WORD1_OWNER         | FATTR4_WORD1_OWNER_GROUP     \

            
             | FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET)


            #endif /* CONFIG_NFSD_V4 */


            #endif /* LINUX_NFSD_NFSD_H */
	/*
	* linux/include/linux/nfsd/nfsd.h
	*
	* Hodge-podge collection of knfsd-related stuff.
	* I will sort this out later.
	*
	* Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
	*/

	#ifndef LINUX_NFSD_NFSD_H
	#define LINUX_NFSD_NFSD_H

	#include <linux/types.h>
	#include <linux/unistd.h>
	#include <linux/fs.h>
	#include <linux/posix_acl.h>
	#include <linux/mount.h>

	#include <linux/nfsd/debug.h>
	#include <linux/nfsd/nfsfh.h>
	#include <linux/nfsd/export.h>
	#include <linux/nfsd/stats.h>
	/*
	* nfsd version
	*/
	#define NFSD_VERSION "0.5"
	#define NFSD_SUPPORTED_MINOR_VERSION 0

	/*
	* Flags for nfsd_permission
	*/
	#define NFSD_MAY_NOP 0
	#define NFSD_MAY_EXEC 1 /* == MAY_EXEC */
	#define NFSD_MAY_WRITE 2 /* == MAY_WRITE */
	#define NFSD_MAY_READ 4 /* == MAY_READ */
	#define NFSD_MAY_SATTR 8
	#define NFSD_MAY_TRUNC 16
	#define NFSD_MAY_LOCK 32
	#define NFSD_MAY_OWNER_OVERRIDE 64
	#define NFSD_MAY_LOCAL_ACCESS 128 /* IRIX doing local access check on device special file*/
	#define NFSD_MAY_BYPASS_GSS_ON_ROOT 256

	#define NFSD_MAY_CREATE (NFSD_MAY_EXEC\|NFSD_MAY_WRITE)
	#define NFSD_MAY_REMOVE (NFSD_MAY_EXEC\|NFSD_MAY_WRITE\|NFSD_MAY_TRUNC)

	/*
	* Callback function for readdir
	*/
	struct readdir_cd {
	__be32 err; /* 0, nfserr, or nfserr_eof */
	};
	typedef int (nfsd_dirop_t)(struct inode , struct dentry *, int, int);

	extern struct svc_program nfsd_program;
	extern struct svc_version nfsd_version2, nfsd_version3,
	nfsd_version4;
	extern struct mutex nfsd_mutex;
	extern struct svc_serv *nfsd_serv;

	extern struct seq_operations nfs_exports_op;

	/*
	* Function prototypes.
	*/
	int nfsd_svc(unsigned short port, int nrservs);
	int nfsd_dispatch(struct svc_rqst rqstp, __be32 statp);

	int nfsd_nrthreads(void);
	int nfsd_nrpools(void);
	int nfsd_get_nrthreads(int n, int *);
	int nfsd_set_nrthreads(int n, int *);

	/* nfsd/vfs.c */
	int fh_lock_parent(struct svc_fh , struct dentry );
	int nfsd_racache_init(int);
	void nfsd_racache_shutdown(void);
	int nfsd_cross_mnt(struct svc_rqst rqstp, struct dentry *dpp,
	struct svc_export **expp);
	__be32 nfsd_lookup(struct svc_rqst , struct svc_fh ,
	const char , unsigned int, struct svc_fh );
	__be32 nfsd_lookup_dentry(struct svc_rqst , struct svc_fh ,
	const char *, unsigned int,
	struct svc_export , struct dentry );
	__be32 nfsd_setattr(struct svc_rqst , struct svc_fh ,
	struct iattr *, int, time_t);
	#ifdef CONFIG_NFSD_V4
	__be32 nfsd4_set_nfs4_acl(struct svc_rqst , struct svc_fh ,
	struct nfs4_acl *);
	int nfsd4_get_nfs4_acl(struct svc_rqst , struct dentry , struct nfs4_acl **);
	#endif /* CONFIG_NFSD_V4 */
	__be32 nfsd_create(struct svc_rqst , struct svc_fh ,
	char name, int len, struct iattr attrs,
	int type, dev_t rdev, struct svc_fh *res);
	#ifdef CONFIG_NFSD_V3
	__be32 nfsd_access(struct svc_rqst , struct svc_fh , u32 , u32 );
	__be32 nfsd_create_v3(struct svc_rqst , struct svc_fh ,
	char name, int len, struct iattr attrs,
	struct svc_fh *res, int createmode,
	u32 verifier, int truncp, int *created);
	__be32 nfsd_commit(struct svc_rqst , struct svc_fh ,
	loff_t, unsigned long);
	#endif /* CONFIG_NFSD_V3 */
	__be32 nfsd_open(struct svc_rqst , struct svc_fh , int,
	int, struct file **);
	void nfsd_close(struct file *);
	__be32 nfsd_read(struct svc_rqst , struct svc_fh , struct file *,
	loff_t, struct kvec , int, unsigned long );
	__be32 nfsd_write(struct svc_rqst , struct svc_fh ,struct file *,
	loff_t, struct kvec ,int, unsigned long, int );
	__be32 nfsd_readlink(struct svc_rqst , struct svc_fh ,
	char , int );
	__be32 nfsd_symlink(struct svc_rqst , struct svc_fh ,
	char name, int len, char path, int plen,
	struct svc_fh res, struct iattr );
	__be32 nfsd_link(struct svc_rqst , struct svc_fh ,
	char , int, struct svc_fh );
	__be32 nfsd_rename(struct svc_rqst *,
	struct svc_fh , char , int,
	struct svc_fh , char , int);
	__be32 nfsd_remove(struct svc_rqst *,
	struct svc_fh , char , int);
	__be32 nfsd_unlink(struct svc_rqst , struct svc_fh , int type,
	char *name, int len);
	int nfsd_truncate(struct svc_rqst , struct svc_fh ,
	unsigned long size);
	__be32 nfsd_readdir(struct svc_rqst , struct svc_fh ,
	loff_t , struct readdir_cd , filldir_t);
	__be32 nfsd_statfs(struct svc_rqst , struct svc_fh ,
	struct kstatfs *, int access);

	int nfsd_notify_change(struct inode , struct iattr );
	__be32 nfsd_permission(struct svc_rqst , struct svc_export ,
	struct dentry *, int);
	int nfsd_sync_dir(struct dentry *dp);

	#if defined(CONFIG_NFSD_V2_ACL) \|\| defined(CONFIG_NFSD_V3_ACL)
	#ifdef CONFIG_NFSD_V2_ACL
	extern struct svc_version nfsd_acl_version2;
	#else
	#define nfsd_acl_version2 NULL
	#endif
	#ifdef CONFIG_NFSD_V3_ACL
	extern struct svc_version nfsd_acl_version3;
	#else
	#define nfsd_acl_version3 NULL
	#endif
	struct posix_acl nfsd_get_posix_acl(struct svc_fh , int);
	int nfsd_set_posix_acl(struct svc_fh , int, struct posix_acl );
	#endif

	enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL };
	int nfsd_vers(int vers, enum vers_op change);
	void nfsd_reset_versions(void);
	int nfsd_create_serv(void);

	extern int nfsd_max_blksize;

	/*
	* NFSv4 State
	*/
	#ifdef CONFIG_NFSD_V4
	extern unsigned int max_delegations;
	int nfs4_state_init(void);
	void nfsd4_free_slabs(void);
	void nfs4_state_start(void);
	void nfs4_state_shutdown(void);
	time_t nfs4_lease_time(void);
	void nfs4_reset_lease(time_t leasetime);
	int nfs4_reset_recoverydir(char *recdir);
	#else
	static inline int nfs4_state_init(void) { return 0; }
	static inline void nfsd4_free_slabs(void) { }
	static inline void nfs4_state_start(void) { }
	static inline void nfs4_state_shutdown(void) { }
	static inline time_t nfs4_lease_time(void) { return 0; }
	static inline void nfs4_reset_lease(time_t leasetime) { }
	static inline int nfs4_reset_recoverydir(char *recdir) { return 0; }
	#endif

	/*
	* lockd binding
	*/
	void nfsd_lockd_init(void);
	void nfsd_lockd_shutdown(void);


	/*
	* These macros provide pre-xdr'ed values for faster operation.
	*/
	#define nfs_ok __constant_htonl(NFS_OK)
	#define nfserr_perm __constant_htonl(NFSERR_PERM)
	#define nfserr_noent __constant_htonl(NFSERR_NOENT)
	#define nfserr_io __constant_htonl(NFSERR_IO)
	#define nfserr_nxio __constant_htonl(NFSERR_NXIO)
	#define nfserr_eagain __constant_htonl(NFSERR_EAGAIN)
	#define nfserr_acces __constant_htonl(NFSERR_ACCES)
	#define nfserr_exist __constant_htonl(NFSERR_EXIST)
	#define nfserr_xdev __constant_htonl(NFSERR_XDEV)
	#define nfserr_nodev __constant_htonl(NFSERR_NODEV)
	#define nfserr_notdir __constant_htonl(NFSERR_NOTDIR)
	#define nfserr_isdir __constant_htonl(NFSERR_ISDIR)
	#define nfserr_inval __constant_htonl(NFSERR_INVAL)
	#define nfserr_fbig __constant_htonl(NFSERR_FBIG)
	#define nfserr_nospc __constant_htonl(NFSERR_NOSPC)
	#define nfserr_rofs __constant_htonl(NFSERR_ROFS)
	#define nfserr_mlink __constant_htonl(NFSERR_MLINK)
	#define nfserr_opnotsupp __constant_htonl(NFSERR_OPNOTSUPP)
	#define nfserr_nametoolong __constant_htonl(NFSERR_NAMETOOLONG)
	#define nfserr_notempty __constant_htonl(NFSERR_NOTEMPTY)
	#define nfserr_dquot __constant_htonl(NFSERR_DQUOT)
	#define nfserr_stale __constant_htonl(NFSERR_STALE)
	#define nfserr_remote __constant_htonl(NFSERR_REMOTE)
	#define nfserr_wflush __constant_htonl(NFSERR_WFLUSH)
	#define nfserr_badhandle __constant_htonl(NFSERR_BADHANDLE)
	#define nfserr_notsync __constant_htonl(NFSERR_NOT_SYNC)
	#define nfserr_badcookie __constant_htonl(NFSERR_BAD_COOKIE)
	#define nfserr_notsupp __constant_htonl(NFSERR_NOTSUPP)
	#define nfserr_toosmall __constant_htonl(NFSERR_TOOSMALL)
	#define nfserr_serverfault __constant_htonl(NFSERR_SERVERFAULT)
	#define nfserr_badtype __constant_htonl(NFSERR_BADTYPE)
	#define nfserr_jukebox __constant_htonl(NFSERR_JUKEBOX)
	#define nfserr_denied __constant_htonl(NFSERR_DENIED)
	#define nfserr_deadlock __constant_htonl(NFSERR_DEADLOCK)
	#define nfserr_expired __constant_htonl(NFSERR_EXPIRED)
	#define nfserr_bad_cookie __constant_htonl(NFSERR_BAD_COOKIE)
	#define nfserr_same __constant_htonl(NFSERR_SAME)
	#define nfserr_clid_inuse __constant_htonl(NFSERR_CLID_INUSE)
	#define nfserr_stale_clientid __constant_htonl(NFSERR_STALE_CLIENTID)
	#define nfserr_resource __constant_htonl(NFSERR_RESOURCE)
	#define nfserr_moved __constant_htonl(NFSERR_MOVED)
	#define nfserr_nofilehandle __constant_htonl(NFSERR_NOFILEHANDLE)
	#define nfserr_minor_vers_mismatch __constant_htonl(NFSERR_MINOR_VERS_MISMATCH)
	#define nfserr_share_denied __constant_htonl(NFSERR_SHARE_DENIED)
	#define nfserr_stale_stateid __constant_htonl(NFSERR_STALE_STATEID)
	#define nfserr_old_stateid __constant_htonl(NFSERR_OLD_STATEID)
	#define nfserr_bad_stateid __constant_htonl(NFSERR_BAD_STATEID)
	#define nfserr_bad_seqid __constant_htonl(NFSERR_BAD_SEQID)
	#define nfserr_symlink __constant_htonl(NFSERR_SYMLINK)
	#define nfserr_not_same __constant_htonl(NFSERR_NOT_SAME)
	#define nfserr_restorefh __constant_htonl(NFSERR_RESTOREFH)
	#define nfserr_attrnotsupp __constant_htonl(NFSERR_ATTRNOTSUPP)
	#define nfserr_bad_xdr __constant_htonl(NFSERR_BAD_XDR)
	#define nfserr_openmode __constant_htonl(NFSERR_OPENMODE)
	#define nfserr_locks_held __constant_htonl(NFSERR_LOCKS_HELD)
	#define nfserr_op_illegal __constant_htonl(NFSERR_OP_ILLEGAL)
	#define nfserr_grace __constant_htonl(NFSERR_GRACE)
	#define nfserr_no_grace __constant_htonl(NFSERR_NO_GRACE)
	#define nfserr_reclaim_bad __constant_htonl(NFSERR_RECLAIM_BAD)
	#define nfserr_badname __constant_htonl(NFSERR_BADNAME)
	#define nfserr_cb_path_down __constant_htonl(NFSERR_CB_PATH_DOWN)
	#define nfserr_locked __constant_htonl(NFSERR_LOCKED)
	#define nfserr_wrongsec __constant_htonl(NFSERR_WRONGSEC)
	#define nfserr_replay_me __constant_htonl(NFSERR_REPLAY_ME)

	/* error codes for internal use */
	/* if a request fails due to kmalloc failure, it gets dropped.
	* Client should resend eventually
	*/
	#define nfserr_dropit __constant_htonl(30000)
	/* end-of-file indicator in readdir */
	#define nfserr_eof __constant_htonl(30001)

	/* Check for dir entries '.' and '..' */
	#define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 \|\| n[1] == '.'))

	/*
	* Time of server startup
	*/
	extern struct timeval nfssvc_boot;

	#ifdef CONFIG_NFSD_V4

	/* before processing a COMPOUND operation, we have to check that there
	* is enough space in the buffer for XDR encode to succeed. otherwise,
	* we might process an operation with side effects, and be unable to
	* tell the client that the operation succeeded.
	*
	* COMPOUND_SLACK_SPACE - this is the minimum bytes of buffer space
	* needed to encode an "ordinary" _successful_ operation. (GETATTR,
	* READ, READDIR, and READLINK have their own buffer checks.) if we
	* fall below this level, we fail the next operation with NFS4ERR_RESOURCE.
	*
	* COMPOUND_ERR_SLACK_SPACE - this is the minimum bytes of buffer space
	* needed to encode an operation which has failed with NFS4ERR_RESOURCE.
	* care is taken to ensure that we never fall below this level for any
	* reason.
	*/
	#define COMPOUND_SLACK_SPACE 140 /* OP_GETFH */
	#define COMPOUND_ERR_SLACK_SPACE 12 /* OP_SETATTR */

	#define NFSD_LEASE_TIME (nfs4_lease_time())
	#define NFSD_LAUNDROMAT_MINTIMEOUT 10 /* seconds */

	/*
	* The following attributes are currently not supported by the NFSv4 server:
	* ARCHIVE (deprecated anyway)
	* HIDDEN (unlikely to be supported any time soon)
	* MIMETYPE (unlikely to be supported any time soon)
	* QUOTA_* (will be supported in a forthcoming patch)
	* SYSTEM (unlikely to be supported any time soon)
	* TIME_BACKUP (unlikely to be supported any time soon)
	* TIME_CREATE (unlikely to be supported any time soon)
	*/
	#define NFSD_SUPPORTED_ATTRS_WORD0 \
	(FATTR4_WORD0_SUPPORTED_ATTRS \| FATTR4_WORD0_TYPE \| FATTR4_WORD0_FH_EXPIRE_TYPE \
	\| FATTR4_WORD0_CHANGE \| FATTR4_WORD0_SIZE \| FATTR4_WORD0_LINK_SUPPORT \
	\| FATTR4_WORD0_SYMLINK_SUPPORT \| FATTR4_WORD0_NAMED_ATTR \| FATTR4_WORD0_FSID \
	\| FATTR4_WORD0_UNIQUE_HANDLES \| FATTR4_WORD0_LEASE_TIME \| FATTR4_WORD0_RDATTR_ERROR \
	\| FATTR4_WORD0_ACLSUPPORT \| FATTR4_WORD0_CANSETTIME \| FATTR4_WORD0_CASE_INSENSITIVE \
	\| FATTR4_WORD0_CASE_PRESERVING \| FATTR4_WORD0_CHOWN_RESTRICTED \
	\| FATTR4_WORD0_FILEHANDLE \| FATTR4_WORD0_FILEID \| FATTR4_WORD0_FILES_AVAIL \
	\| FATTR4_WORD0_FILES_FREE \| FATTR4_WORD0_FILES_TOTAL \| FATTR4_WORD0_FS_LOCATIONS \| FATTR4_WORD0_HOMOGENEOUS \
	\| FATTR4_WORD0_MAXFILESIZE \| FATTR4_WORD0_MAXLINK \| FATTR4_WORD0_MAXNAME \
	\| FATTR4_WORD0_MAXREAD \| FATTR4_WORD0_MAXWRITE \| FATTR4_WORD0_ACL)

	#define NFSD_SUPPORTED_ATTRS_WORD1 \
	(FATTR4_WORD1_MODE \| FATTR4_WORD1_NO_TRUNC \| FATTR4_WORD1_NUMLINKS \
	\| FATTR4_WORD1_OWNER \| FATTR4_WORD1_OWNER_GROUP \| FATTR4_WORD1_RAWDEV \
	\| FATTR4_WORD1_SPACE_AVAIL \| FATTR4_WORD1_SPACE_FREE \| FATTR4_WORD1_SPACE_TOTAL \
	\| FATTR4_WORD1_SPACE_USED \| FATTR4_WORD1_TIME_ACCESS \| FATTR4_WORD1_TIME_ACCESS_SET \
	\| FATTR4_WORD1_TIME_DELTA \| FATTR4_WORD1_TIME_METADATA \
	\| FATTR4_WORD1_TIME_MODIFY \| FATTR4_WORD1_TIME_MODIFY_SET \| FATTR4_WORD1_MOUNTED_ON_FILEID)

	/* These will return ERR_INVAL if specified in GETATTR or READDIR. */
	#define NFSD_WRITEONLY_ATTRS_WORD1 \
	(FATTR4_WORD1_TIME_ACCESS_SET \| FATTR4_WORD1_TIME_MODIFY_SET)

	/* These are the only attrs allowed in CREATE/OPEN/SETATTR. */
	#define NFSD_WRITEABLE_ATTRS_WORD0 \
	(FATTR4_WORD0_SIZE \| FATTR4_WORD0_ACL )
	#define NFSD_WRITEABLE_ATTRS_WORD1 \
	(FATTR4_WORD1_MODE \| FATTR4_WORD1_OWNER \| FATTR4_WORD1_OWNER_GROUP \
	\| FATTR4_WORD1_TIME_ACCESS_SET \| FATTR4_WORD1_TIME_MODIFY_SET)

	#endif /* CONFIG_NFSD_V4 */

	#endif /* LINUX_NFSD_NFSD_H */