include/linux/nfsd/nfsd.h - kernel/msm-4.9 - Gitiles

 /*
  * 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/dirent.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

 /*
  * Special flags for nfsd_permission. These must be different from MAY_READ,
  * MAY_WRITE, and MAY_EXEC.
  */
 #define MAY_NOP			0
 #define MAY_SATTR		8
 #define MAY_TRUNC		16
 #define MAY_LOCK		32
 #define MAY_OWNER_OVERRIDE	64
 #define	MAY_LOCAL_ACCESS	128 /* IRIX doing local access check on device special file*/
 #if (MAY_SATTR | MAY_TRUNC | MAY_LOCK | MAY_OWNER_OVERRIDE | MAY_LOCAL_ACCESS) & (MAY_READ | MAY_WRITE | MAY_EXEC)
 # error "please use a different value for MAY_SATTR or MAY_TRUNC or MAY_LOCK or MAY_LOCAL_ACCESS or MAY_OWNER_OVERRIDE."
 #endif
 #define MAY_CREATE		(MAY_EXEC|MAY_WRITE)
 #define MAY_REMOVE		(MAY_EXEC|MAY_WRITE|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 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		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/dirent.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

	/*
	* Special flags for nfsd_permission. These must be different from MAY_READ,
	* MAY_WRITE, and MAY_EXEC.
	*/
	#define MAY_NOP 0
	#define MAY_SATTR 8
	#define MAY_TRUNC 16
	#define MAY_LOCK 32
	#define MAY_OWNER_OVERRIDE 64
	#define MAY_LOCAL_ACCESS 128 /* IRIX doing local access check on device special file*/
	#if (MAY_SATTR \| MAY_TRUNC \| MAY_LOCK \| MAY_OWNER_OVERRIDE \| MAY_LOCAL_ACCESS) & (MAY_READ \| MAY_WRITE \| MAY_EXEC)
	# error "please use a different value for MAY_SATTR or MAY_TRUNC or MAY_LOCK or MAY_LOCAL_ACCESS or MAY_OWNER_OVERRIDE."
	#endif
	#define MAY_CREATE (MAY_EXEC\|MAY_WRITE)
	#define MAY_REMOVE (MAY_EXEC\|MAY_WRITE\|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 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 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 */