[linux-2.6-block.git] / include / 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_SUPPORTED_MINOR_VERSION	1

/*
 * 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 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 *);

/* 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);
int nfsd_minorversion(u32 minorversion, 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);
int 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 int nfs4_state_start(void) { return 0; }
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			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_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

/* 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 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 LT	1	/*
	2	* linux/include/linux/nfsd/nfsd.h
	3	*
	4	* Hodge-podge collection of knfsd-related stuff.
	5	* I will sort this out later.
	6	*
	7	* Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
	8	*/
	9
	10	#ifndef LINUX_NFSD_NFSD_H
	11	#define LINUX_NFSD_NFSD_H
	12
1da177e4 LT	13	#include <linux/types.h>
1da177e4 LT	14	#include <linux/unistd.h>
1da177e4	15	#include <linux/fs.h>
a257cdd0	16	#include <linux/posix_acl.h>
1da177e4 LT	17	#include <linux/mount.h>
	18
	19	#include <linux/nfsd/debug.h>
	20	#include <linux/nfsd/nfsfh.h>
	21	#include <linux/nfsd/export.h>
1da177e4	22	#include <linux/nfsd/stats.h>
1da177e4 LT	23	/*
	24	* nfsd version
	25	*/
f3ec22b5	26	#define NFSD_SUPPORTED_MINOR_VERSION 1
1da177e4	27
1da177e4	28	/*
8837abca	29	* Flags for nfsd_permission
1da177e4	30	*/
8837abca MS	31	#define NFSD_MAY_NOP 0
	32	#define NFSD_MAY_EXEC 1 /* == MAY_EXEC */
	33	#define NFSD_MAY_WRITE 2 /* == MAY_WRITE */
	34	#define NFSD_MAY_READ 4 /* == MAY_READ */
	35	#define NFSD_MAY_SATTR 8
	36	#define NFSD_MAY_TRUNC 16
	37	#define NFSD_MAY_LOCK 32
	38	#define NFSD_MAY_OWNER_OVERRIDE 64
	39	#define NFSD_MAY_LOCAL_ACCESS 128 /* IRIX doing local access check on device special file*/
04716e66	40	#define NFSD_MAY_BYPASS_GSS_ON_ROOT 256
8837abca MS	41
	42	#define NFSD_MAY_CREATE (NFSD_MAY_EXEC\|NFSD_MAY_WRITE)
	43	#define NFSD_MAY_REMOVE (NFSD_MAY_EXEC\|NFSD_MAY_WRITE\|NFSD_MAY_TRUNC)
1da177e4 LT	44
	45	/*
	46	* Callback function for readdir
	47	*/
	48	struct readdir_cd {
131a21c2	49	__be32 err; /* 0, nfserr, or nfserr_eof */
1da177e4	50	};
1da177e4 LT	51	typedef int (nfsd_dirop_t)(struct inode , struct dentry *, int, int);
	52
	53	extern struct svc_program nfsd_program;
	54	extern struct svc_version nfsd_version2, nfsd_version3,
	55	nfsd_version4;
8daf220a	56	extern u32 nfsd_supported_minorversion;
bedbdd8b	57	extern struct mutex nfsd_mutex;
70c3b76c	58	extern struct svc_serv *nfsd_serv;
4bd9b0f4	59	extern spinlock_t nfsd_drc_lock;
0c193054 AA	60	extern unsigned int nfsd_drc_max_mem;
0c193054 AA	61	extern unsigned int nfsd_drc_mem_used;
a254b246	62
88e9d34c	63	extern const struct seq_operations nfs_exports_op;
a254b246	64
1da177e4 LT	65	/*
	66	* Function prototypes.
	67	*/
	68	int nfsd_svc(unsigned short port, int nrservs);
c7afef1f	69	int nfsd_dispatch(struct svc_rqst rqstp, __be32 statp);
1da177e4	70
a254b246 HH	71	int nfsd_nrthreads(void);
	72	int nfsd_nrpools(void);
	73	int nfsd_get_nrthreads(int n, int *);
	74	int nfsd_set_nrthreads(int n, int *);
	75
1da177e4 LT	76	/* nfsd/vfs.c */
	77	int fh_lock_parent(struct svc_fh , struct dentry );
	78	int nfsd_racache_init(int);
	79	void nfsd_racache_shutdown(void);
	80	int nfsd_cross_mnt(struct svc_rqst rqstp, struct dentry *dpp,
	81	struct svc_export **expp);
6264d69d	82	__be32 nfsd_lookup(struct svc_rqst , struct svc_fh ,
5a022fc8	83	const char , unsigned int, struct svc_fh );
dcb488a3	84	__be32 nfsd_lookup_dentry(struct svc_rqst , struct svc_fh ,
5a022fc8	85	const char *, unsigned int,
dcb488a3	86	struct svc_export , struct dentry );
6264d69d	87	__be32 nfsd_setattr(struct svc_rqst , struct svc_fh ,
1da177e4 LT	88	struct iattr *, int, time_t);
1da177e4 LT	89	#ifdef CONFIG_NFSD_V4
6264d69d	90	__be32 nfsd4_set_nfs4_acl(struct svc_rqst , struct svc_fh ,
1da177e4 LT	91	struct nfs4_acl *);
	92	int nfsd4_get_nfs4_acl(struct svc_rqst , struct dentry , struct nfs4_acl **);
	93	#endif /* CONFIG_NFSD_V4 */
6264d69d	94	__be32 nfsd_create(struct svc_rqst , struct svc_fh ,
1da177e4 LT	95	char name, int len, struct iattr attrs,
	96	int type, dev_t rdev, struct svc_fh *res);
	97	#ifdef CONFIG_NFSD_V3
6264d69d AV	98	__be32 nfsd_access(struct svc_rqst , struct svc_fh , u32 , u32 );
6264d69d AV	99	__be32 nfsd_create_v3(struct svc_rqst , struct svc_fh ,
1da177e4 LT	100	char name, int len, struct iattr attrs,
1da177e4 LT	101	struct svc_fh *res, int createmode,
81ac95c5	102	u32 verifier, int truncp, int *created);
6264d69d	103	__be32 nfsd_commit(struct svc_rqst , struct svc_fh ,
1da177e4 LT	104	loff_t, unsigned long);
1da177e4 LT	105	#endif /* CONFIG_NFSD_V3 */
6264d69d	106	__be32 nfsd_open(struct svc_rqst , struct svc_fh , int,
1da177e4 LT	107	int, struct file **);
1da177e4 LT	108	void nfsd_close(struct file *);
6264d69d	109	__be32 nfsd_read(struct svc_rqst , struct svc_fh , struct file *,
1da177e4	110	loff_t, struct kvec , int, unsigned long );
6264d69d	111	__be32 nfsd_write(struct svc_rqst , struct svc_fh ,struct file *,
31dec253	112	loff_t, struct kvec ,int, unsigned long , int *);
6264d69d	113	__be32 nfsd_readlink(struct svc_rqst , struct svc_fh ,
1da177e4	114	char , int );
6264d69d	115	__be32 nfsd_symlink(struct svc_rqst , struct svc_fh ,
1da177e4 LT	116	char name, int len, char path, int plen,
1da177e4 LT	117	struct svc_fh res, struct iattr );
6264d69d	118	__be32 nfsd_link(struct svc_rqst , struct svc_fh ,
1da177e4	119	char , int, struct svc_fh );
6264d69d	120	__be32 nfsd_rename(struct svc_rqst *,
1da177e4 LT	121	struct svc_fh , char , int,
1da177e4 LT	122	struct svc_fh , char , int);
6264d69d	123	__be32 nfsd_remove(struct svc_rqst *,
1da177e4	124	struct svc_fh , char , int);
6264d69d	125	__be32 nfsd_unlink(struct svc_rqst , struct svc_fh , int type,
1da177e4 LT	126	char *name, int len);
	127	int nfsd_truncate(struct svc_rqst , struct svc_fh ,
	128	unsigned long size);
6264d69d	129	__be32 nfsd_readdir(struct svc_rqst , struct svc_fh ,
a0ad13ef	130	loff_t , struct readdir_cd , filldir_t);
6264d69d	131	__be32 nfsd_statfs(struct svc_rqst , struct svc_fh ,
04716e66	132	struct kstatfs *, int access);
1da177e4 LT	133
1da177e4 LT	134	int nfsd_notify_change(struct inode , struct iattr );
0ec757df BF	135	__be32 nfsd_permission(struct svc_rqst , struct svc_export ,
0ec757df BF	136	struct dentry *, int);
f193fbab	137	int nfsd_sync_dir(struct dentry *dp);
1da177e4	138
a257cdd0 AG	139	#if defined(CONFIG_NFSD_V2_ACL) \|\| defined(CONFIG_NFSD_V3_ACL)
	140	#ifdef CONFIG_NFSD_V2_ACL
	141	extern struct svc_version nfsd_acl_version2;
	142	#else
	143	#define nfsd_acl_version2 NULL
	144	#endif
	145	#ifdef CONFIG_NFSD_V3_ACL
	146	extern struct svc_version nfsd_acl_version3;
	147	#else
	148	#define nfsd_acl_version3 NULL
	149	#endif
	150	struct posix_acl nfsd_get_posix_acl(struct svc_fh , int);
	151	int nfsd_set_posix_acl(struct svc_fh , int, struct posix_acl );
	152	#endif
	153
6658d3a7 N	154	enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL };
6658d3a7 N	155	int nfsd_vers(int vers, enum vers_op change);
8daf220a	156	int nfsd_minorversion(u32 minorversion, enum vers_op change);
6658d3a7	157	void nfsd_reset_versions(void);
b41b66d6	158	int nfsd_create_serv(void);
6658d3a7	159
596bbe53	160	extern int nfsd_max_blksize;
1da177e4 LT	161
	162	/*
	163	* NFSv4 State
	164	*/
	165	#ifdef CONFIG_NFSD_V4
c2f1a551	166	extern unsigned int max_delegations;
e8ff2a84 BF	167	int nfs4_state_init(void);
e8ff2a84 BF	168	void nfsd4_free_slabs(void);
29ab23cc	169	int nfs4_state_start(void);
1da177e4 LT	170	void nfs4_state_shutdown(void);
	171	time_t nfs4_lease_time(void);
	172	void nfs4_reset_lease(time_t leasetime);
0964a3d3	173	int nfs4_reset_recoverydir(char *recdir);
1da177e4	174	#else
e8ff2a84 BF	175	static inline int nfs4_state_init(void) { return 0; }
e8ff2a84 BF	176	static inline void nfsd4_free_slabs(void) { }
c0826574	177	static inline int nfs4_state_start(void) { return 0; }
e8ff2a84 BF	178	static inline void nfs4_state_shutdown(void) { }
	179	static inline time_t nfs4_lease_time(void) { return 0; }
	180	static inline void nfs4_reset_lease(time_t leasetime) { }
	181	static inline int nfs4_reset_recoverydir(char *recdir) { return 0; }
1da177e4 LT	182	#endif
	183
	184	/*
	185	* lockd binding
	186	*/
	187	void nfsd_lockd_init(void);
	188	void nfsd_lockd_shutdown(void);
	189
	190
	191	/*
	192	* These macros provide pre-xdr'ed values for faster operation.
	193	*/
77f18f5e HH	194	#define nfs_ok cpu_to_be32(NFS_OK)
	195	#define nfserr_perm cpu_to_be32(NFSERR_PERM)
	196	#define nfserr_noent cpu_to_be32(NFSERR_NOENT)
	197	#define nfserr_io cpu_to_be32(NFSERR_IO)
	198	#define nfserr_nxio cpu_to_be32(NFSERR_NXIO)
	199	#define nfserr_eagain cpu_to_be32(NFSERR_EAGAIN)
	200	#define nfserr_acces cpu_to_be32(NFSERR_ACCES)
	201	#define nfserr_exist cpu_to_be32(NFSERR_EXIST)
	202	#define nfserr_xdev cpu_to_be32(NFSERR_XDEV)
	203	#define nfserr_nodev cpu_to_be32(NFSERR_NODEV)
	204	#define nfserr_notdir cpu_to_be32(NFSERR_NOTDIR)
	205	#define nfserr_isdir cpu_to_be32(NFSERR_ISDIR)
	206	#define nfserr_inval cpu_to_be32(NFSERR_INVAL)
	207	#define nfserr_fbig cpu_to_be32(NFSERR_FBIG)
	208	#define nfserr_nospc cpu_to_be32(NFSERR_NOSPC)
	209	#define nfserr_rofs cpu_to_be32(NFSERR_ROFS)
	210	#define nfserr_mlink cpu_to_be32(NFSERR_MLINK)
	211	#define nfserr_opnotsupp cpu_to_be32(NFSERR_OPNOTSUPP)
	212	#define nfserr_nametoolong cpu_to_be32(NFSERR_NAMETOOLONG)
	213	#define nfserr_notempty cpu_to_be32(NFSERR_NOTEMPTY)
	214	#define nfserr_dquot cpu_to_be32(NFSERR_DQUOT)
	215	#define nfserr_stale cpu_to_be32(NFSERR_STALE)
	216	#define nfserr_remote cpu_to_be32(NFSERR_REMOTE)
	217	#define nfserr_wflush cpu_to_be32(NFSERR_WFLUSH)
	218	#define nfserr_badhandle cpu_to_be32(NFSERR_BADHANDLE)
	219	#define nfserr_notsync cpu_to_be32(NFSERR_NOT_SYNC)
	220	#define nfserr_badcookie cpu_to_be32(NFSERR_BAD_COOKIE)
	221	#define nfserr_notsupp cpu_to_be32(NFSERR_NOTSUPP)
	222	#define nfserr_toosmall cpu_to_be32(NFSERR_TOOSMALL)
	223	#define nfserr_serverfault cpu_to_be32(NFSERR_SERVERFAULT)
	224	#define nfserr_badtype cpu_to_be32(NFSERR_BADTYPE)
	225	#define nfserr_jukebox cpu_to_be32(NFSERR_JUKEBOX)
	226	#define nfserr_denied cpu_to_be32(NFSERR_DENIED)
	227	#define nfserr_deadlock cpu_to_be32(NFSERR_DEADLOCK)
	228	#define nfserr_expired cpu_to_be32(NFSERR_EXPIRED)
	229	#define nfserr_bad_cookie cpu_to_be32(NFSERR_BAD_COOKIE)
	230	#define nfserr_same cpu_to_be32(NFSERR_SAME)
	231	#define nfserr_clid_inuse cpu_to_be32(NFSERR_CLID_INUSE)
	232	#define nfserr_stale_clientid cpu_to_be32(NFSERR_STALE_CLIENTID)
	233	#define nfserr_resource cpu_to_be32(NFSERR_RESOURCE)
	234	#define nfserr_moved cpu_to_be32(NFSERR_MOVED)
	235	#define nfserr_nofilehandle cpu_to_be32(NFSERR_NOFILEHANDLE)
	236	#define nfserr_minor_vers_mismatch cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH)
	237	#define nfserr_share_denied cpu_to_be32(NFSERR_SHARE_DENIED)
	238	#define nfserr_stale_stateid cpu_to_be32(NFSERR_STALE_STATEID)
	239	#define nfserr_old_stateid cpu_to_be32(NFSERR_OLD_STATEID)
	240	#define nfserr_bad_stateid cpu_to_be32(NFSERR_BAD_STATEID)
	241	#define nfserr_bad_seqid cpu_to_be32(NFSERR_BAD_SEQID)
	242	#define nfserr_symlink cpu_to_be32(NFSERR_SYMLINK)
	243	#define nfserr_not_same cpu_to_be32(NFSERR_NOT_SAME)
	244	#define nfserr_restorefh cpu_to_be32(NFSERR_RESTOREFH)
	245	#define nfserr_attrnotsupp cpu_to_be32(NFSERR_ATTRNOTSUPP)
	246	#define nfserr_bad_xdr cpu_to_be32(NFSERR_BAD_XDR)
	247	#define nfserr_openmode cpu_to_be32(NFSERR_OPENMODE)
	248	#define nfserr_locks_held cpu_to_be32(NFSERR_LOCKS_HELD)
	249	#define nfserr_op_illegal cpu_to_be32(NFSERR_OP_ILLEGAL)
	250	#define nfserr_grace cpu_to_be32(NFSERR_GRACE)
	251	#define nfserr_no_grace cpu_to_be32(NFSERR_NO_GRACE)
	252	#define nfserr_reclaim_bad cpu_to_be32(NFSERR_RECLAIM_BAD)
	253	#define nfserr_badname cpu_to_be32(NFSERR_BADNAME)
	254	#define nfserr_cb_path_down cpu_to_be32(NFSERR_CB_PATH_DOWN)
	255	#define nfserr_locked cpu_to_be32(NFSERR_LOCKED)
	256	#define nfserr_wrongsec cpu_to_be32(NFSERR_WRONGSEC)
10add806 ME	257	#define nfserr_badiomode cpu_to_be32(NFS4ERR_BADIOMODE)
	258	#define nfserr_badlayout cpu_to_be32(NFS4ERR_BADLAYOUT)
	259	#define nfserr_bad_session_digest cpu_to_be32(NFS4ERR_BAD_SESSION_DIGEST)
	260	#define nfserr_badsession cpu_to_be32(NFS4ERR_BADSESSION)
	261	#define nfserr_badslot cpu_to_be32(NFS4ERR_BADSLOT)
	262	#define nfserr_complete_already cpu_to_be32(NFS4ERR_COMPLETE_ALREADY)
	263	#define nfserr_conn_not_bound_to_session cpu_to_be32(NFS4ERR_CONN_NOT_BOUND_TO_SESSION)
	264	#define nfserr_deleg_already_wanted cpu_to_be32(NFS4ERR_DELEG_ALREADY_WANTED)
	265	#define nfserr_back_chan_busy cpu_to_be32(NFS4ERR_BACK_CHAN_BUSY)
	266	#define nfserr_layouttrylater cpu_to_be32(NFS4ERR_LAYOUTTRYLATER)
	267	#define nfserr_layoutunavailable cpu_to_be32(NFS4ERR_LAYOUTUNAVAILABLE)
	268	#define nfserr_nomatching_layout cpu_to_be32(NFS4ERR_NOMATCHING_LAYOUT)
	269	#define nfserr_recallconflict cpu_to_be32(NFS4ERR_RECALLCONFLICT)
	270	#define nfserr_unknown_layouttype cpu_to_be32(NFS4ERR_UNKNOWN_LAYOUTTYPE)
	271	#define nfserr_seq_misordered cpu_to_be32(NFS4ERR_SEQ_MISORDERED)
	272	#define nfserr_sequence_pos cpu_to_be32(NFS4ERR_SEQUENCE_POS)
	273	#define nfserr_req_too_big cpu_to_be32(NFS4ERR_REQ_TOO_BIG)
	274	#define nfserr_rep_too_big cpu_to_be32(NFS4ERR_REP_TOO_BIG)
	275	#define nfserr_rep_too_big_to_cache cpu_to_be32(NFS4ERR_REP_TOO_BIG_TO_CACHE)
	276	#define nfserr_retry_uncached_rep cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP)
	277	#define nfserr_unsafe_compound cpu_to_be32(NFS4ERR_UNSAFE_COMPOUND)
	278	#define nfserr_too_many_ops cpu_to_be32(NFS4ERR_TOO_MANY_OPS)
	279	#define nfserr_op_not_in_session cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION)
	280	#define nfserr_hash_alg_unsupp cpu_to_be32(NFS4ERR_HASH_ALG_UNSUPP)
	281	#define nfserr_clientid_busy cpu_to_be32(NFS4ERR_CLIENTID_BUSY)
	282	#define nfserr_pnfs_io_hole cpu_to_be32(NFS4ERR_PNFS_IO_HOLE)
	283	#define nfserr_seq_false_retry cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY)
	284	#define nfserr_bad_high_slot cpu_to_be32(NFS4ERR_BAD_HIGH_SLOT)
	285	#define nfserr_deadsession cpu_to_be32(NFS4ERR_DEADSESSION)
	286	#define nfserr_encr_alg_unsupp cpu_to_be32(NFS4ERR_ENCR_ALG_UNSUPP)
	287	#define nfserr_pnfs_no_layout cpu_to_be32(NFS4ERR_PNFS_NO_LAYOUT)
	288	#define nfserr_not_only_op cpu_to_be32(NFS4ERR_NOT_ONLY_OP)
	289	#define nfserr_wrong_cred cpu_to_be32(NFS4ERR_WRONG_CRED)
	290	#define nfserr_wrong_type cpu_to_be32(NFS4ERR_WRONG_TYPE)
	291	#define nfserr_dirdeleg_unavail cpu_to_be32(NFS4ERR_DIRDELEG_UNAVAIL)
	292	#define nfserr_reject_deleg cpu_to_be32(NFS4ERR_REJECT_DELEG)
	293	#define nfserr_returnconflict cpu_to_be32(NFS4ERR_RETURNCONFLICT)
	294	#define nfserr_deleg_revoked cpu_to_be32(NFS4ERR_DELEG_REVOKED)
1da177e4 LT	295
	296	/* error codes for internal use */
	297	/* if a request fails due to kmalloc failure, it gets dropped.
	298	* Client should resend eventually
	299	*/
77f18f5e	300	#define nfserr_dropit cpu_to_be32(30000)
1da177e4	301	/* end-of-file indicator in readdir */
77f18f5e	302	#define nfserr_eof cpu_to_be32(30001)
10add806 ME	303	/* replay detected */
	304	#define nfserr_replay_me cpu_to_be32(11001)
	305	/* nfs41 replay detected */
	306	#define nfserr_replay_cache cpu_to_be32(11002)
1da177e4 LT	307
	308	/* Check for dir entries '.' and '..' */
	309	#define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 \|\| n[1] == '.'))
	310
	311	/*
	312	* Time of server startup
	313	*/
	314	extern struct timeval nfssvc_boot;
	315
1da177e4 LT	316	#ifdef CONFIG_NFSD_V4
	317
	318	/* before processing a COMPOUND operation, we have to check that there
	319	* is enough space in the buffer for XDR encode to succeed. otherwise,
	320	* we might process an operation with side effects, and be unable to
	321	* tell the client that the operation succeeded.
	322	*
e5710199	323	* COMPOUND_SLACK_SPACE - this is the minimum bytes of buffer space
1da177e4 LT	324	* needed to encode an "ordinary" _successful_ operation. (GETATTR,
	325	* READ, READDIR, and READLINK have their own buffer checks.) if we
	326	* fall below this level, we fail the next operation with NFS4ERR_RESOURCE.
	327	*
e5710199	328	* COMPOUND_ERR_SLACK_SPACE - this is the minimum bytes of buffer space
1da177e4 LT	329	* needed to encode an operation which has failed with NFS4ERR_RESOURCE.
	330	* care is taken to ensure that we never fall below this level for any
	331	* reason.
	332	*/
	333	#define COMPOUND_SLACK_SPACE 140 /* OP_GETFH */
	334	#define COMPOUND_ERR_SLACK_SPACE 12 /* OP_SETATTR */
	335
	336	#define NFSD_LEASE_TIME (nfs4_lease_time())
	337	#define NFSD_LAUNDROMAT_MINTIMEOUT 10 /* seconds */
	338
	339	/*
	340	* The following attributes are currently not supported by the NFSv4 server:
	341	* ARCHIVE (deprecated anyway)
1da177e4 LT	342	* HIDDEN (unlikely to be supported any time soon)
	343	* MIMETYPE (unlikely to be supported any time soon)
	344	* QUOTA_* (will be supported in a forthcoming patch)
	345	* SYSTEM (unlikely to be supported any time soon)
	346	* TIME_BACKUP (unlikely to be supported any time soon)
	347	* TIME_CREATE (unlikely to be supported any time soon)
	348	*/
7e705706	349	#define NFSD4_SUPPORTED_ATTRS_WORD0 \
1da177e4 LT	350	(FATTR4_WORD0_SUPPORTED_ATTRS \| FATTR4_WORD0_TYPE \| FATTR4_WORD0_FH_EXPIRE_TYPE \
	351	\| FATTR4_WORD0_CHANGE \| FATTR4_WORD0_SIZE \| FATTR4_WORD0_LINK_SUPPORT \
	352	\| FATTR4_WORD0_SYMLINK_SUPPORT \| FATTR4_WORD0_NAMED_ATTR \| FATTR4_WORD0_FSID \
	353	\| FATTR4_WORD0_UNIQUE_HANDLES \| FATTR4_WORD0_LEASE_TIME \| FATTR4_WORD0_RDATTR_ERROR \
	354	\| FATTR4_WORD0_ACLSUPPORT \| FATTR4_WORD0_CANSETTIME \| FATTR4_WORD0_CASE_INSENSITIVE \
	355	\| FATTR4_WORD0_CASE_PRESERVING \| FATTR4_WORD0_CHOWN_RESTRICTED \
	356	\| FATTR4_WORD0_FILEHANDLE \| FATTR4_WORD0_FILEID \| FATTR4_WORD0_FILES_AVAIL \
81c3f413	357	\| FATTR4_WORD0_FILES_FREE \| FATTR4_WORD0_FILES_TOTAL \| FATTR4_WORD0_FS_LOCATIONS \| FATTR4_WORD0_HOMOGENEOUS \
1da177e4 LT	358	\| FATTR4_WORD0_MAXFILESIZE \| FATTR4_WORD0_MAXLINK \| FATTR4_WORD0_MAXNAME \
	359	\| FATTR4_WORD0_MAXREAD \| FATTR4_WORD0_MAXWRITE \| FATTR4_WORD0_ACL)
	360
7e705706	361	#define NFSD4_SUPPORTED_ATTRS_WORD1 \
1da177e4 LT	362	(FATTR4_WORD1_MODE \| FATTR4_WORD1_NO_TRUNC \| FATTR4_WORD1_NUMLINKS \
	363	\| FATTR4_WORD1_OWNER \| FATTR4_WORD1_OWNER_GROUP \| FATTR4_WORD1_RAWDEV \
	364	\| FATTR4_WORD1_SPACE_AVAIL \| FATTR4_WORD1_SPACE_FREE \| FATTR4_WORD1_SPACE_TOTAL \
	365	\| FATTR4_WORD1_SPACE_USED \| FATTR4_WORD1_TIME_ACCESS \| FATTR4_WORD1_TIME_ACCESS_SET \
	366	\| FATTR4_WORD1_TIME_DELTA \| FATTR4_WORD1_TIME_METADATA \
	367	\| FATTR4_WORD1_TIME_MODIFY \| FATTR4_WORD1_TIME_MODIFY_SET \| FATTR4_WORD1_MOUNTED_ON_FILEID)
	368
7e705706 AA	369	#define NFSD4_SUPPORTED_ATTRS_WORD2 0
	370
	371	#define NFSD4_1_SUPPORTED_ATTRS_WORD0 \
	372	NFSD4_SUPPORTED_ATTRS_WORD0
	373
	374	#define NFSD4_1_SUPPORTED_ATTRS_WORD1 \
	375	NFSD4_SUPPORTED_ATTRS_WORD1
	376
	377	#define NFSD4_1_SUPPORTED_ATTRS_WORD2 \
8c18f205	378	(NFSD4_SUPPORTED_ATTRS_WORD2 \| FATTR4_WORD2_SUPPATTR_EXCLCREAT)
7e705706 AA	379
	380	static inline u32 nfsd_suppattrs0(u32 minorversion)
	381	{
	382	return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD0
	383	: NFSD4_SUPPORTED_ATTRS_WORD0;
	384	}
	385
	386	static inline u32 nfsd_suppattrs1(u32 minorversion)
	387	{
	388	return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD1
	389	: NFSD4_SUPPORTED_ATTRS_WORD1;
	390	}
	391
	392	static inline u32 nfsd_suppattrs2(u32 minorversion)
	393	{
	394	return minorversion ? NFSD4_1_SUPPORTED_ATTRS_WORD2
	395	: NFSD4_SUPPORTED_ATTRS_WORD2;
	396	}
	397
1da177e4 LT	398	/* These will return ERR_INVAL if specified in GETATTR or READDIR. */
	399	#define NFSD_WRITEONLY_ATTRS_WORD1 \
	400	(FATTR4_WORD1_TIME_ACCESS_SET \| FATTR4_WORD1_TIME_MODIFY_SET)
	401
	402	/* These are the only attrs allowed in CREATE/OPEN/SETATTR. */
	403	#define NFSD_WRITEABLE_ATTRS_WORD0 \
	404	(FATTR4_WORD0_SIZE \| FATTR4_WORD0_ACL )
	405	#define NFSD_WRITEABLE_ATTRS_WORD1 \
	406	(FATTR4_WORD1_MODE \| FATTR4_WORD1_OWNER \| FATTR4_WORD1_OWNER_GROUP \
e36cd4a2	407	\| FATTR4_WORD1_TIME_ACCESS_SET \| FATTR4_WORD1_TIME_MODIFY_SET)
7e705706	408	#define NFSD_WRITEABLE_ATTRS_WORD2 0
1da177e4	409
8c18f205 BH	410	#define NFSD_SUPPATTR_EXCLCREAT_WORD0 \
	411	NFSD_WRITEABLE_ATTRS_WORD0
	412	/*
	413	* we currently store the exclusive create verifier in the v_{a,m}time
	414	* attributes so the client can't set these at create time using EXCLUSIVE4_1
	415	*/
	416	#define NFSD_SUPPATTR_EXCLCREAT_WORD1 \
	417	(NFSD_WRITEABLE_ATTRS_WORD1 & \
	418	~(FATTR4_WORD1_TIME_ACCESS_SET \| FATTR4_WORD1_TIME_MODIFY_SET))
	419	#define NFSD_SUPPATTR_EXCLCREAT_WORD2 \
	420	NFSD_WRITEABLE_ATTRS_WORD2
	421
1da177e4 LT	422	#endif /* CONFIG_NFSD_V4 */
1da177e4 LT	423
1da177e4	424	#endif /* LINUX_NFSD_NFSD_H */