[net-next-2.6.git] / fs / 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/mount.h>

#include <linux/nfsd/debug.h>
#include <linux/nfsd/export.h>
#include <linux/nfsd/stats.h>
/*
 * nfsd version
 */
#define NFSD_SUPPORTED_MINOR_VERSION	1

struct readdir_cd {
	__be32			err;	/* 0, nfserr, or nfserr_eof */
};


extern struct svc_program	nfsd_program;
extern struct svc_version	nfsd_version2, nfsd_version3,
				nfsd_version4;
extern u32			nfsd_supported_minorversion;
extern struct mutex		nfsd_mutex;
extern struct svc_serv		*nfsd_serv;
extern spinlock_t		nfsd_drc_lock;
extern unsigned int		nfsd_drc_max_mem;
extern unsigned int		nfsd_drc_mem_used;

extern const 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 *);

#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
#endif

enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL };
int nfsd_vers(int vers, enum vers_op change);
int nfsd_minorversion(u32 minorversion, enum vers_op change);
void nfsd_reset_versions(void);
int nfsd_create_serv(void);

extern int nfsd_max_blksize;

static inline int nfsd_v4client(struct svc_rqst *rq)
{
	return rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4;
}

/* 
 * NFSv4 State
 */
#ifdef CONFIG_NFSD_V4
extern unsigned int max_delegations;
int nfs4_state_init(void);
void nfsd4_free_slabs(void);
int nfs4_state_start(void);
void nfs4_state_shutdown(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 int nfs4_state_start(void) { return 0; }
static inline void nfs4_state_shutdown(void) { }
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			cpu_to_be32(NFS_OK)
#define	nfserr_perm		cpu_to_be32(NFSERR_PERM)
#define	nfserr_noent		cpu_to_be32(NFSERR_NOENT)
#define	nfserr_io		cpu_to_be32(NFSERR_IO)
#define	nfserr_nxio		cpu_to_be32(NFSERR_NXIO)
#define	nfserr_eagain		cpu_to_be32(NFSERR_EAGAIN)
#define	nfserr_acces		cpu_to_be32(NFSERR_ACCES)
#define	nfserr_exist		cpu_to_be32(NFSERR_EXIST)
#define	nfserr_xdev		cpu_to_be32(NFSERR_XDEV)
#define	nfserr_nodev		cpu_to_be32(NFSERR_NODEV)
#define	nfserr_notdir		cpu_to_be32(NFSERR_NOTDIR)
#define	nfserr_isdir		cpu_to_be32(NFSERR_ISDIR)
#define	nfserr_inval		cpu_to_be32(NFSERR_INVAL)
#define	nfserr_fbig		cpu_to_be32(NFSERR_FBIG)
#define	nfserr_nospc		cpu_to_be32(NFSERR_NOSPC)
#define	nfserr_rofs		cpu_to_be32(NFSERR_ROFS)
#define	nfserr_mlink		cpu_to_be32(NFSERR_MLINK)
#define	nfserr_opnotsupp	cpu_to_be32(NFSERR_OPNOTSUPP)
#define	nfserr_nametoolong	cpu_to_be32(NFSERR_NAMETOOLONG)
#define	nfserr_notempty		cpu_to_be32(NFSERR_NOTEMPTY)
#define	nfserr_dquot		cpu_to_be32(NFSERR_DQUOT)
#define	nfserr_stale		cpu_to_be32(NFSERR_STALE)
#define	nfserr_remote		cpu_to_be32(NFSERR_REMOTE)
#define	nfserr_wflush		cpu_to_be32(NFSERR_WFLUSH)
#define	nfserr_badhandle	cpu_to_be32(NFSERR_BADHANDLE)
#define	nfserr_notsync		cpu_to_be32(NFSERR_NOT_SYNC)
#define	nfserr_badcookie	cpu_to_be32(NFSERR_BAD_COOKIE)
#define	nfserr_notsupp		cpu_to_be32(NFSERR_NOTSUPP)
#define	nfserr_toosmall		cpu_to_be32(NFSERR_TOOSMALL)
#define	nfserr_serverfault	cpu_to_be32(NFSERR_SERVERFAULT)
#define	nfserr_badtype		cpu_to_be32(NFSERR_BADTYPE)
#define	nfserr_jukebox		cpu_to_be32(NFSERR_JUKEBOX)
#define	nfserr_denied		cpu_to_be32(NFSERR_DENIED)
#define	nfserr_deadlock		cpu_to_be32(NFSERR_DEADLOCK)
#define nfserr_expired          cpu_to_be32(NFSERR_EXPIRED)
#define	nfserr_bad_cookie	cpu_to_be32(NFSERR_BAD_COOKIE)
#define	nfserr_same		cpu_to_be32(NFSERR_SAME)
#define	nfserr_clid_inuse	cpu_to_be32(NFSERR_CLID_INUSE)
#define	nfserr_stale_clientid	cpu_to_be32(NFSERR_STALE_CLIENTID)
#define	nfserr_resource		cpu_to_be32(NFSERR_RESOURCE)
#define	nfserr_moved		cpu_to_be32(NFSERR_MOVED)
#define	nfserr_nofilehandle	cpu_to_be32(NFSERR_NOFILEHANDLE)
#define	nfserr_minor_vers_mismatch	cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH)
#define nfserr_share_denied	cpu_to_be32(NFSERR_SHARE_DENIED)
#define nfserr_stale_stateid	cpu_to_be32(NFSERR_STALE_STATEID)
#define nfserr_old_stateid	cpu_to_be32(NFSERR_OLD_STATEID)
#define nfserr_bad_stateid	cpu_to_be32(NFSERR_BAD_STATEID)
#define nfserr_bad_seqid	cpu_to_be32(NFSERR_BAD_SEQID)
#define	nfserr_symlink		cpu_to_be32(NFSERR_SYMLINK)
#define	nfserr_not_same		cpu_to_be32(NFSERR_NOT_SAME)
#define nfserr_lock_range	cpu_to_be32(NFSERR_LOCK_RANGE)
#define	nfserr_restorefh	cpu_to_be32(NFSERR_RESTOREFH)
#define	nfserr_attrnotsupp	cpu_to_be32(NFSERR_ATTRNOTSUPP)
#define	nfserr_bad_xdr		cpu_to_be32(NFSERR_BAD_XDR)
#define	nfserr_openmode		cpu_to_be32(NFSERR_OPENMODE)
#define	nfserr_locks_held	cpu_to_be32(NFSERR_LOCKS_HELD)
#define	nfserr_op_illegal	cpu_to_be32(NFSERR_OP_ILLEGAL)
#define	nfserr_grace		cpu_to_be32(NFSERR_GRACE)
#define	nfserr_no_grace		cpu_to_be32(NFSERR_NO_GRACE)
#define	nfserr_reclaim_bad	cpu_to_be32(NFSERR_RECLAIM_BAD)
#define	nfserr_badname		cpu_to_be32(NFSERR_BADNAME)
#define	nfserr_cb_path_down	cpu_to_be32(NFSERR_CB_PATH_DOWN)
#define	nfserr_locked		cpu_to_be32(NFSERR_LOCKED)
#define	nfserr_wrongsec		cpu_to_be32(NFSERR_WRONGSEC)
#define nfserr_badiomode		cpu_to_be32(NFS4ERR_BADIOMODE)
#define nfserr_badlayout		cpu_to_be32(NFS4ERR_BADLAYOUT)
#define nfserr_bad_session_digest	cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST)
#define nfserr_badsession		cpu_to_be32(NFS4ERR_BADSESSION)
#define nfserr_badslot			cpu_to_be32(NFS4ERR_BADSLOT)
#define nfserr_complete_already		cpu_to_be32(NFS4ERR_COMPLETE_ALREADY)
#define nfserr_conn_not_bound_to_session cpu_to_be32(NFS4ERR_CONN_NOT_BOUND_TO_SESSION)
#define nfserr_deleg_already_wanted	cpu_to_be32(NFS4ERR_DELEG_ALREADY_WANTED)
#define nfserr_back_chan_busy		cpu_to_be32(NFS4ERR_BACK_CHAN_BUSY)
#define nfserr_layouttrylater		cpu_to_be32(NFS4ERR_LAYOUTTRYLATER)
#define nfserr_layoutunavailable	cpu_to_be32(NFS4ERR_LAYOUTUNAVAILABLE)
#define nfserr_nomatching_layout	cpu_to_be32(NFS4ERR_NOMATCHING_LAYOUT)
#define nfserr_recallconflict		cpu_to_be32(NFS4ERR_RECALLCONFLICT)
#define nfserr_unknown_layouttype	cpu_to_be32(NFS4ERR_UNKNOWN_LAYOUTTYPE)
#define nfserr_seq_misordered		cpu_to_be32(NFS4ERR_SEQ_MISORDERED)
#define nfserr_sequence_pos		cpu_to_be32(NFS4ERR_SEQUENCE_POS)
#define nfserr_req_too_big		cpu_to_be32(NFS4ERR_REQ_TOO_BIG)
#define nfserr_rep_too_big		cpu_to_be32(NFS4ERR_REP_TOO_BIG)
#define nfserr_rep_too_big_to_cache	cpu_to_be32(NFS4ERR_REP_TOO_BIG_TO_CACHE)
#define nfserr_retry_uncached_rep	cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP)
#define nfserr_unsafe_compound		cpu_to_be32(NFS4ERR_UNSAFE_COMPOUND)
#define nfserr_too_many_ops		cpu_to_be32(NFS4ERR_TOO_MANY_OPS)
#define nfserr_op_not_in_session	cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION)
#define nfserr_hash_alg_unsupp		cpu_to_be32(NFS4ERR_HASH_ALG_UNSUPP)
#define nfserr_clientid_busy		cpu_to_be32(NFS4ERR_CLIENTID_BUSY)
#define nfserr_pnfs_io_hole		cpu_to_be32(NFS4ERR_PNFS_IO_HOLE)
#define nfserr_seq_false_retry		cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY)
#define nfserr_bad_high_slot		cpu_to_be32(NFS4ERR_BAD_HIGH_SLOT)
#define nfserr_deadsession		cpu_to_be32(NFS4ERR_DEADSESSION)
#define nfserr_encr_alg_unsupp		cpu_to_be32(NFS4ERR_ENCR_ALG_UNSUPP)
#define nfserr_pnfs_no_layout		cpu_to_be32(NFS4ERR_PNFS_NO_LAYOUT)
#define nfserr_not_only_op		cpu_to_be32(NFS4ERR_NOT_ONLY_OP)
#define nfserr_wrong_cred		cpu_to_be32(NFS4ERR_WRONG_CRED)
#define nfserr_wrong_type		cpu_to_be32(NFS4ERR_WRONG_TYPE)
#define nfserr_dirdeleg_unavail		cpu_to_be32(NFS4ERR_DIRDELEG_UNAVAIL)
#define nfserr_reject_deleg		cpu_to_be32(NFS4ERR_REJECT_DELEG)
#define nfserr_returnconflict		cpu_to_be32(NFS4ERR_RETURNCONFLICT)
#define nfserr_deleg_revoked		cpu_to_be32(NFS4ERR_DELEG_REVOKED)

/* error codes for internal use */
/* if a request fails due to kmalloc failure, it gets dropped.
 *  Client should resend eventually
 */
#define	nfserr_dropit		cpu_to_be32(30000)
/* end-of-file indicator in readdir */
#define	nfserr_eof		cpu_to_be32(30001)
/* replay detected */
#define	nfserr_replay_me	cpu_to_be32(11001)
/* nfs41 replay detected */
#define	nfserr_replay_cache	cpu_to_be32(11002)

/* 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

extern time_t nfsd4_lease;
extern time_t nfsd4_grace;

/* 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_LAUNDROMAT_MINTIMEOUT      1   /* 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 NFSD4_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 NFSD4_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)

#define NFSD4_SUPPORTED_ATTRS_WORD2 0

#define NFSD4_1_SUPPORTED_ATTRS_WORD0 \
	NFSD4_SUPPORTED_ATTRS_WORD0

#define NFSD4_1_SUPPORTED_ATTRS_WORD1 \
	NFSD4_SUPPORTED_ATTRS_WORD1

#define NFSD4_1_SUPPORTED_ATTRS_WORD2 \
	(NFSD4_SUPPORTED_ATTRS_WORD2 | FATTR4_WORD2_SUPPATTR_EXCLCREAT)

static inline u32 nfsd_suppattrs0(u32 minorversion)
{
	return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD0
			    : NFSD4_SUPPORTED_ATTRS_WORD0;
}

static inline u32 nfsd_suppattrs1(u32 minorversion)
{
	return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD1
			    : NFSD4_SUPPORTED_ATTRS_WORD1;
}

static inline u32 nfsd_suppattrs2(u32 minorversion)
{
	return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD2
			    : NFSD4_SUPPORTED_ATTRS_WORD2;
}

/* 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)
#define NFSD_WRITEABLE_ATTRS_WORD2 0

#define NFSD_SUPPATTR_EXCLCREAT_WORD0 \
	NFSD_WRITEABLE_ATTRS_WORD0
/*
 * we currently store the exclusive create verifier in the v_{a,m}time
 * attributes so the client can't set these at create time using EXCLUSIVE4_1
 */
#define NFSD_SUPPATTR_EXCLCREAT_WORD1 \
	(NFSD_WRITEABLE_ATTRS_WORD1 & \
	 ~(FATTR4_WORD1_TIME_ACCESS_SET | FATTR4_WORD1_TIME_MODIFY_SET))
#define NFSD_SUPPATTR_EXCLCREAT_WORD2 \
	NFSD_WRITEABLE_ATTRS_WORD2

#endif /* CONFIG_NFSD_V4 */

#endif /* LINUX_NFSD_NFSD_H */
Commit	Line	Data
1da177e4	1	/*
1da177e4 LT	2	* Hodge-podge collection of knfsd-related stuff.
	3	* I will sort this out later.
	4	*
	5	* Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
	6	*/
	7
	8	#ifndef LINUX_NFSD_NFSD_H
	9	#define LINUX_NFSD_NFSD_H
	10
1da177e4	11	#include <linux/types.h>
1da177e4 LT	12	#include <linux/mount.h>
	13
	14	#include <linux/nfsd/debug.h>
1da177e4	15	#include <linux/nfsd/export.h>
1da177e4	16	#include <linux/nfsd/stats.h>
1da177e4 LT	17	/*
	18	* nfsd version
	19	*/
f3ec22b5	20	#define NFSD_SUPPORTED_MINOR_VERSION 1
1da177e4	21
1da177e4	22	struct readdir_cd {
131a21c2	23	__be32 err; /* 0, nfserr, or nfserr_eof */
1da177e4	24	};
0a3adade	25
1da177e4 LT	26
	27	extern struct svc_program nfsd_program;
	28	extern struct svc_version nfsd_version2, nfsd_version3,
	29	nfsd_version4;
8daf220a	30	extern u32 nfsd_supported_minorversion;
bedbdd8b	31	extern struct mutex nfsd_mutex;
70c3b76c	32	extern struct svc_serv *nfsd_serv;
4bd9b0f4	33	extern spinlock_t nfsd_drc_lock;
0c193054 AA	34	extern unsigned int nfsd_drc_max_mem;
0c193054 AA	35	extern unsigned int nfsd_drc_mem_used;
a254b246	36
88e9d34c	37	extern const struct seq_operations nfs_exports_op;
a254b246	38
1da177e4 LT	39	/*
	40	* Function prototypes.
	41	*/
	42	int nfsd_svc(unsigned short port, int nrservs);
c7afef1f	43	int nfsd_dispatch(struct svc_rqst rqstp, __be32 statp);
1da177e4	44
a254b246 HH	45	int nfsd_nrthreads(void);
	46	int nfsd_nrpools(void);
	47	int nfsd_get_nrthreads(int n, int *);
	48	int nfsd_set_nrthreads(int n, int *);
	49
a257cdd0 AG	50	#if defined(CONFIG_NFSD_V2_ACL) \|\| defined(CONFIG_NFSD_V3_ACL)
	51	#ifdef CONFIG_NFSD_V2_ACL
	52	extern struct svc_version nfsd_acl_version2;
	53	#else
	54	#define nfsd_acl_version2 NULL
	55	#endif
	56	#ifdef CONFIG_NFSD_V3_ACL
	57	extern struct svc_version nfsd_acl_version3;
	58	#else
	59	#define nfsd_acl_version3 NULL
	60	#endif
a257cdd0 AG	61	#endif
a257cdd0 AG	62
6658d3a7 N	63	enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL };
6658d3a7 N	64	int nfsd_vers(int vers, enum vers_op change);
8daf220a	65	int nfsd_minorversion(u32 minorversion, enum vers_op change);
6658d3a7	66	void nfsd_reset_versions(void);
b41b66d6	67	int nfsd_create_serv(void);
6658d3a7	68
596bbe53	69	extern int nfsd_max_blksize;
1da177e4	70
03a816b4 SD	71	static inline int nfsd_v4client(struct svc_rqst *rq)
	72	{
	73	return rq->rq_prog == NFS_PROGRAM && rq->rq_vers == 4;
	74	}
	75
1da177e4 LT	76	/*
	77	* NFSv4 State
	78	*/
	79	#ifdef CONFIG_NFSD_V4
c2f1a551	80	extern unsigned int max_delegations;
e8ff2a84 BF	81	int nfs4_state_init(void);
e8ff2a84 BF	82	void nfsd4_free_slabs(void);
29ab23cc	83	int nfs4_state_start(void);
1da177e4	84	void nfs4_state_shutdown(void);
1da177e4	85	void nfs4_reset_lease(time_t leasetime);
0964a3d3	86	int nfs4_reset_recoverydir(char *recdir);
1da177e4	87	#else
e8ff2a84 BF	88	static inline int nfs4_state_init(void) { return 0; }
e8ff2a84 BF	89	static inline void nfsd4_free_slabs(void) { }
c0826574	90	static inline int nfs4_state_start(void) { return 0; }
e8ff2a84	91	static inline void nfs4_state_shutdown(void) { }
e8ff2a84 BF	92	static inline void nfs4_reset_lease(time_t leasetime) { }
e8ff2a84 BF	93	static inline int nfs4_reset_recoverydir(char *recdir) { return 0; }
1da177e4 LT	94	#endif
	95
	96	/*
	97	* lockd binding
	98	*/
	99	void nfsd_lockd_init(void);
	100	void nfsd_lockd_shutdown(void);
	101
	102
	103	/*
	104	* These macros provide pre-xdr'ed values for faster operation.
	105	*/
77f18f5e HH	106	#define nfs_ok cpu_to_be32(NFS_OK)
	107	#define nfserr_perm cpu_to_be32(NFSERR_PERM)
	108	#define nfserr_noent cpu_to_be32(NFSERR_NOENT)
	109	#define nfserr_io cpu_to_be32(NFSERR_IO)
	110	#define nfserr_nxio cpu_to_be32(NFSERR_NXIO)
	111	#define nfserr_eagain cpu_to_be32(NFSERR_EAGAIN)
	112	#define nfserr_acces cpu_to_be32(NFSERR_ACCES)
	113	#define nfserr_exist cpu_to_be32(NFSERR_EXIST)
	114	#define nfserr_xdev cpu_to_be32(NFSERR_XDEV)
	115	#define nfserr_nodev cpu_to_be32(NFSERR_NODEV)
	116	#define nfserr_notdir cpu_to_be32(NFSERR_NOTDIR)
	117	#define nfserr_isdir cpu_to_be32(NFSERR_ISDIR)
	118	#define nfserr_inval cpu_to_be32(NFSERR_INVAL)
	119	#define nfserr_fbig cpu_to_be32(NFSERR_FBIG)
	120	#define nfserr_nospc cpu_to_be32(NFSERR_NOSPC)
	121	#define nfserr_rofs cpu_to_be32(NFSERR_ROFS)
	122	#define nfserr_mlink cpu_to_be32(NFSERR_MLINK)
	123	#define nfserr_opnotsupp cpu_to_be32(NFSERR_OPNOTSUPP)
	124	#define nfserr_nametoolong cpu_to_be32(NFSERR_NAMETOOLONG)
	125	#define nfserr_notempty cpu_to_be32(NFSERR_NOTEMPTY)
	126	#define nfserr_dquot cpu_to_be32(NFSERR_DQUOT)
	127	#define nfserr_stale cpu_to_be32(NFSERR_STALE)
	128	#define nfserr_remote cpu_to_be32(NFSERR_REMOTE)
	129	#define nfserr_wflush cpu_to_be32(NFSERR_WFLUSH)
	130	#define nfserr_badhandle cpu_to_be32(NFSERR_BADHANDLE)
	131	#define nfserr_notsync cpu_to_be32(NFSERR_NOT_SYNC)
	132	#define nfserr_badcookie cpu_to_be32(NFSERR_BAD_COOKIE)
	133	#define nfserr_notsupp cpu_to_be32(NFSERR_NOTSUPP)
	134	#define nfserr_toosmall cpu_to_be32(NFSERR_TOOSMALL)
	135	#define nfserr_serverfault cpu_to_be32(NFSERR_SERVERFAULT)
	136	#define nfserr_badtype cpu_to_be32(NFSERR_BADTYPE)
	137	#define nfserr_jukebox cpu_to_be32(NFSERR_JUKEBOX)
	138	#define nfserr_denied cpu_to_be32(NFSERR_DENIED)
	139	#define nfserr_deadlock cpu_to_be32(NFSERR_DEADLOCK)
	140	#define nfserr_expired cpu_to_be32(NFSERR_EXPIRED)
	141	#define nfserr_bad_cookie cpu_to_be32(NFSERR_BAD_COOKIE)
	142	#define nfserr_same cpu_to_be32(NFSERR_SAME)
	143	#define nfserr_clid_inuse cpu_to_be32(NFSERR_CLID_INUSE)
	144	#define nfserr_stale_clientid cpu_to_be32(NFSERR_STALE_CLIENTID)
	145	#define nfserr_resource cpu_to_be32(NFSERR_RESOURCE)
	146	#define nfserr_moved cpu_to_be32(NFSERR_MOVED)
	147	#define nfserr_nofilehandle cpu_to_be32(NFSERR_NOFILEHANDLE)
	148	#define nfserr_minor_vers_mismatch cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH)
	149	#define nfserr_share_denied cpu_to_be32(NFSERR_SHARE_DENIED)
	150	#define nfserr_stale_stateid cpu_to_be32(NFSERR_STALE_STATEID)
	151	#define nfserr_old_stateid cpu_to_be32(NFSERR_OLD_STATEID)
	152	#define nfserr_bad_stateid cpu_to_be32(NFSERR_BAD_STATEID)
	153	#define nfserr_bad_seqid cpu_to_be32(NFSERR_BAD_SEQID)
	154	#define nfserr_symlink cpu_to_be32(NFSERR_SYMLINK)
	155	#define nfserr_not_same cpu_to_be32(NFSERR_NOT_SAME)
f9d7562f	156	#define nfserr_lock_range cpu_to_be32(NFSERR_LOCK_RANGE)
77f18f5e HH	157	#define nfserr_restorefh cpu_to_be32(NFSERR_RESTOREFH)
	158	#define nfserr_attrnotsupp cpu_to_be32(NFSERR_ATTRNOTSUPP)
	159	#define nfserr_bad_xdr cpu_to_be32(NFSERR_BAD_XDR)
	160	#define nfserr_openmode cpu_to_be32(NFSERR_OPENMODE)
	161	#define nfserr_locks_held cpu_to_be32(NFSERR_LOCKS_HELD)
	162	#define nfserr_op_illegal cpu_to_be32(NFSERR_OP_ILLEGAL)
	163	#define nfserr_grace cpu_to_be32(NFSERR_GRACE)
	164	#define nfserr_no_grace cpu_to_be32(NFSERR_NO_GRACE)
	165	#define nfserr_reclaim_bad cpu_to_be32(NFSERR_RECLAIM_BAD)
	166	#define nfserr_badname cpu_to_be32(NFSERR_BADNAME)
	167	#define nfserr_cb_path_down cpu_to_be32(NFSERR_CB_PATH_DOWN)
	168	#define nfserr_locked cpu_to_be32(NFSERR_LOCKED)
	169	#define nfserr_wrongsec cpu_to_be32(NFSERR_WRONGSEC)
10add806 ME	170	#define nfserr_badiomode cpu_to_be32(NFS4ERR_BADIOMODE)
	171	#define nfserr_badlayout cpu_to_be32(NFS4ERR_BADLAYOUT)
	172	#define nfserr_bad_session_digest cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST)
	173	#define nfserr_badsession cpu_to_be32(NFS4ERR_BADSESSION)
	174	#define nfserr_badslot cpu_to_be32(NFS4ERR_BADSLOT)
	175	#define nfserr_complete_already cpu_to_be32(NFS4ERR_COMPLETE_ALREADY)
	176	#define nfserr_conn_not_bound_to_session cpu_to_be32(NFS4ERR_CONN_NOT_BOUND_TO_SESSION)
	177	#define nfserr_deleg_already_wanted cpu_to_be32(NFS4ERR_DELEG_ALREADY_WANTED)
	178	#define nfserr_back_chan_busy cpu_to_be32(NFS4ERR_BACK_CHAN_BUSY)
	179	#define nfserr_layouttrylater cpu_to_be32(NFS4ERR_LAYOUTTRYLATER)
	180	#define nfserr_layoutunavailable cpu_to_be32(NFS4ERR_LAYOUTUNAVAILABLE)
	181	#define nfserr_nomatching_layout cpu_to_be32(NFS4ERR_NOMATCHING_LAYOUT)
	182	#define nfserr_recallconflict cpu_to_be32(NFS4ERR_RECALLCONFLICT)
	183	#define nfserr_unknown_layouttype cpu_to_be32(NFS4ERR_UNKNOWN_LAYOUTTYPE)
	184	#define nfserr_seq_misordered cpu_to_be32(NFS4ERR_SEQ_MISORDERED)
	185	#define nfserr_sequence_pos cpu_to_be32(NFS4ERR_SEQUENCE_POS)
	186	#define nfserr_req_too_big cpu_to_be32(NFS4ERR_REQ_TOO_BIG)
	187	#define nfserr_rep_too_big cpu_to_be32(NFS4ERR_REP_TOO_BIG)
	188	#define nfserr_rep_too_big_to_cache cpu_to_be32(NFS4ERR_REP_TOO_BIG_TO_CACHE)
	189	#define nfserr_retry_uncached_rep cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP)
	190	#define nfserr_unsafe_compound cpu_to_be32(NFS4ERR_UNSAFE_COMPOUND)
	191	#define nfserr_too_many_ops cpu_to_be32(NFS4ERR_TOO_MANY_OPS)
	192	#define nfserr_op_not_in_session cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION)
	193	#define nfserr_hash_alg_unsupp cpu_to_be32(NFS4ERR_HASH_ALG_UNSUPP)
	194	#define nfserr_clientid_busy cpu_to_be32(NFS4ERR_CLIENTID_BUSY)
	195	#define nfserr_pnfs_io_hole cpu_to_be32(NFS4ERR_PNFS_IO_HOLE)
	196	#define nfserr_seq_false_retry cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY)
	197	#define nfserr_bad_high_slot cpu_to_be32(NFS4ERR_BAD_HIGH_SLOT)
	198	#define nfserr_deadsession cpu_to_be32(NFS4ERR_DEADSESSION)
	199	#define nfserr_encr_alg_unsupp cpu_to_be32(NFS4ERR_ENCR_ALG_UNSUPP)
	200	#define nfserr_pnfs_no_layout cpu_to_be32(NFS4ERR_PNFS_NO_LAYOUT)
	201	#define nfserr_not_only_op cpu_to_be32(NFS4ERR_NOT_ONLY_OP)
	202	#define nfserr_wrong_cred cpu_to_be32(NFS4ERR_WRONG_CRED)
	203	#define nfserr_wrong_type cpu_to_be32(NFS4ERR_WRONG_TYPE)
	204	#define nfserr_dirdeleg_unavail cpu_to_be32(NFS4ERR_DIRDELEG_UNAVAIL)
	205	#define nfserr_reject_deleg cpu_to_be32(NFS4ERR_REJECT_DELEG)
	206	#define nfserr_returnconflict cpu_to_be32(NFS4ERR_RETURNCONFLICT)
	207	#define nfserr_deleg_revoked cpu_to_be32(NFS4ERR_DELEG_REVOKED)
1da177e4 LT	208
	209	/* error codes for internal use */
	210	/* if a request fails due to kmalloc failure, it gets dropped.
	211	* Client should resend eventually
	212	*/
77f18f5e	213	#define nfserr_dropit cpu_to_be32(30000)
1da177e4	214	/* end-of-file indicator in readdir */
77f18f5e	215	#define nfserr_eof cpu_to_be32(30001)
10add806 ME	216	/* replay detected */
	217	#define nfserr_replay_me cpu_to_be32(11001)
	218	/* nfs41 replay detected */
	219	#define nfserr_replay_cache cpu_to_be32(11002)
1da177e4 LT	220
	221	/* Check for dir entries '.' and '..' */
	222	#define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 \|\| n[1] == '.'))
	223
	224	/*
	225	* Time of server startup
	226	*/
	227	extern struct timeval nfssvc_boot;
	228
1da177e4 LT	229	#ifdef CONFIG_NFSD_V4
1da177e4 LT	230
cf07d2ea	231	extern time_t nfsd4_lease;
efc4bb4f	232	extern time_t nfsd4_grace;
cf07d2ea	233
1da177e4 LT	234	/* before processing a COMPOUND operation, we have to check that there
	235	* is enough space in the buffer for XDR encode to succeed. otherwise,
	236	* we might process an operation with side effects, and be unable to
	237	* tell the client that the operation succeeded.
	238	*
e5710199	239	* COMPOUND_SLACK_SPACE - this is the minimum bytes of buffer space
1da177e4 LT	240	* needed to encode an "ordinary" _successful_ operation. (GETATTR,
	241	* READ, READDIR, and READLINK have their own buffer checks.) if we
	242	* fall below this level, we fail the next operation with NFS4ERR_RESOURCE.
	243	*
e5710199	244	* COMPOUND_ERR_SLACK_SPACE - this is the minimum bytes of buffer space
1da177e4 LT	245	* needed to encode an operation which has failed with NFS4ERR_RESOURCE.
	246	* care is taken to ensure that we never fall below this level for any
	247	* reason.
	248	*/
	249	#define COMPOUND_SLACK_SPACE 140 /* OP_GETFH */
	250	#define COMPOUND_ERR_SLACK_SPACE 12 /* OP_SETATTR */
	251
ecec6e34	252	#define NFSD_LAUNDROMAT_MINTIMEOUT 1 /* seconds */
1da177e4 LT	253
	254	/*
	255	* The following attributes are currently not supported by the NFSv4 server:
	256	* ARCHIVE (deprecated anyway)
1da177e4 LT	257	* HIDDEN (unlikely to be supported any time soon)
	258	* MIMETYPE (unlikely to be supported any time soon)
	259	* QUOTA_* (will be supported in a forthcoming patch)
	260	* SYSTEM (unlikely to be supported any time soon)
	261	* TIME_BACKUP (unlikely to be supported any time soon)
	262	* TIME_CREATE (unlikely to be supported any time soon)
	263	*/
7e705706	264	#define NFSD4_SUPPORTED_ATTRS_WORD0 \
1da177e4 LT	265	(FATTR4_WORD0_SUPPORTED_ATTRS \| FATTR4_WORD0_TYPE \| FATTR4_WORD0_FH_EXPIRE_TYPE \
	266	\| FATTR4_WORD0_CHANGE \| FATTR4_WORD0_SIZE \| FATTR4_WORD0_LINK_SUPPORT \
	267	\| FATTR4_WORD0_SYMLINK_SUPPORT \| FATTR4_WORD0_NAMED_ATTR \| FATTR4_WORD0_FSID \
	268	\| FATTR4_WORD0_UNIQUE_HANDLES \| FATTR4_WORD0_LEASE_TIME \| FATTR4_WORD0_RDATTR_ERROR \
	269	\| FATTR4_WORD0_ACLSUPPORT \| FATTR4_WORD0_CANSETTIME \| FATTR4_WORD0_CASE_INSENSITIVE \
	270	\| FATTR4_WORD0_CASE_PRESERVING \| FATTR4_WORD0_CHOWN_RESTRICTED \
	271	\| FATTR4_WORD0_FILEHANDLE \| FATTR4_WORD0_FILEID \| FATTR4_WORD0_FILES_AVAIL \
81c3f413	272	\| FATTR4_WORD0_FILES_FREE \| FATTR4_WORD0_FILES_TOTAL \| FATTR4_WORD0_FS_LOCATIONS \| FATTR4_WORD0_HOMOGENEOUS \
1da177e4 LT	273	\| FATTR4_WORD0_MAXFILESIZE \| FATTR4_WORD0_MAXLINK \| FATTR4_WORD0_MAXNAME \
	274	\| FATTR4_WORD0_MAXREAD \| FATTR4_WORD0_MAXWRITE \| FATTR4_WORD0_ACL)
	275
7e705706	276	#define NFSD4_SUPPORTED_ATTRS_WORD1 \
1da177e4 LT	277	(FATTR4_WORD1_MODE \| FATTR4_WORD1_NO_TRUNC \| FATTR4_WORD1_NUMLINKS \
	278	\| FATTR4_WORD1_OWNER \| FATTR4_WORD1_OWNER_GROUP \| FATTR4_WORD1_RAWDEV \
	279	\| FATTR4_WORD1_SPACE_AVAIL \| FATTR4_WORD1_SPACE_FREE \| FATTR4_WORD1_SPACE_TOTAL \
	280	\| FATTR4_WORD1_SPACE_USED \| FATTR4_WORD1_TIME_ACCESS \| FATTR4_WORD1_TIME_ACCESS_SET \
	281	\| FATTR4_WORD1_TIME_DELTA \| FATTR4_WORD1_TIME_METADATA \
	282	\| FATTR4_WORD1_TIME_MODIFY \| FATTR4_WORD1_TIME_MODIFY_SET \| FATTR4_WORD1_MOUNTED_ON_FILEID)
	283
7e705706 AA	284	#define NFSD4_SUPPORTED_ATTRS_WORD2 0
	285
	286	#define NFSD4_1_SUPPORTED_ATTRS_WORD0 \
	287	NFSD4_SUPPORTED_ATTRS_WORD0
	288
	289	#define NFSD4_1_SUPPORTED_ATTRS_WORD1 \
	290	NFSD4_SUPPORTED_ATTRS_WORD1
	291
	292	#define NFSD4_1_SUPPORTED_ATTRS_WORD2 \
8c18f205	293	(NFSD4_SUPPORTED_ATTRS_WORD2 \| FATTR4_WORD2_SUPPATTR_EXCLCREAT)
7e705706 AA	294
	295	static inline u32 nfsd_suppattrs0(u32 minorversion)
	296	{
	297	return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD0
	298	: NFSD4_SUPPORTED_ATTRS_WORD0;
	299	}
	300
	301	static inline u32 nfsd_suppattrs1(u32 minorversion)
	302	{
	303	return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD1
	304	: NFSD4_SUPPORTED_ATTRS_WORD1;
	305	}
	306
	307	static inline u32 nfsd_suppattrs2(u32 minorversion)
	308	{
	309	return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD2
	310	: NFSD4_SUPPORTED_ATTRS_WORD2;
	311	}
	312
1da177e4 LT	313	/* These will return ERR_INVAL if specified in GETATTR or READDIR. */
	314	#define NFSD_WRITEONLY_ATTRS_WORD1 \
	315	(FATTR4_WORD1_TIME_ACCESS_SET \| FATTR4_WORD1_TIME_MODIFY_SET)
	316
	317	/* These are the only attrs allowed in CREATE/OPEN/SETATTR. */
	318	#define NFSD_WRITEABLE_ATTRS_WORD0 \
	319	(FATTR4_WORD0_SIZE \| FATTR4_WORD0_ACL )
	320	#define NFSD_WRITEABLE_ATTRS_WORD1 \
	321	(FATTR4_WORD1_MODE \| FATTR4_WORD1_OWNER \| FATTR4_WORD1_OWNER_GROUP \
e36cd4a2	322	\| FATTR4_WORD1_TIME_ACCESS_SET \| FATTR4_WORD1_TIME_MODIFY_SET)
7e705706	323	#define NFSD_WRITEABLE_ATTRS_WORD2 0
1da177e4	324
8c18f205 BH	325	#define NFSD_SUPPATTR_EXCLCREAT_WORD0 \
	326	NFSD_WRITEABLE_ATTRS_WORD0
	327	/*
	328	* we currently store the exclusive create verifier in the v_{a,m}time
	329	* attributes so the client can't set these at create time using EXCLUSIVE4_1
	330	*/
	331	#define NFSD_SUPPATTR_EXCLCREAT_WORD1 \
	332	(NFSD_WRITEABLE_ATTRS_WORD1 & \
	333	~(FATTR4_WORD1_TIME_ACCESS_SET \| FATTR4_WORD1_TIME_MODIFY_SET))
	334	#define NFSD_SUPPATTR_EXCLCREAT_WORD2 \
	335	NFSD_WRITEABLE_ATTRS_WORD2
	336
1da177e4 LT	337	#endif /* CONFIG_NFSD_V4 */
1da177e4 LT	338
1da177e4	339	#endif /* LINUX_NFSD_NFSD_H */