[mirror_ubuntu-artful-kernel.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	0

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

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

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

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

extern struct seq_operations nfs_exports_op;

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

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

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

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

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

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

extern int nfsd_max_blksize;

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

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


/*
 * These macros provide pre-xdr'ed values for faster operation.
 */
#define	nfs_ok			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_replay_me	cpu_to_be32(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		cpu_to_be32(30000)
/* end-of-file indicator in readdir */
#define	nfserr_eof		cpu_to_be32(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 */
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	*/
1da177e4 LT	26	#define NFSD_SUPPORTED_MINOR_VERSION 0
1da177e4 LT	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;
bedbdd8b	56	extern struct mutex nfsd_mutex;
70c3b76c	57	extern struct svc_serv *nfsd_serv;
a254b246 HH	58
	59	extern struct seq_operations nfs_exports_op;
	60
1da177e4 LT	61	/*
	62	* Function prototypes.
	63	*/
	64	int nfsd_svc(unsigned short port, int nrservs);
c7afef1f	65	int nfsd_dispatch(struct svc_rqst rqstp, __be32 statp);
1da177e4	66
a254b246 HH	67	int nfsd_nrthreads(void);
	68	int nfsd_nrpools(void);
	69	int nfsd_get_nrthreads(int n, int *);
	70	int nfsd_set_nrthreads(int n, int *);
	71
1da177e4 LT	72	/* nfsd/vfs.c */
	73	int fh_lock_parent(struct svc_fh , struct dentry );
	74	int nfsd_racache_init(int);
	75	void nfsd_racache_shutdown(void);
	76	int nfsd_cross_mnt(struct svc_rqst rqstp, struct dentry *dpp,
	77	struct svc_export **expp);
6264d69d	78	__be32 nfsd_lookup(struct svc_rqst , struct svc_fh ,
5a022fc8	79	const char , unsigned int, struct svc_fh );
dcb488a3	80	__be32 nfsd_lookup_dentry(struct svc_rqst , struct svc_fh ,
5a022fc8	81	const char *, unsigned int,
dcb488a3	82	struct svc_export , struct dentry );
6264d69d	83	__be32 nfsd_setattr(struct svc_rqst , struct svc_fh ,
1da177e4 LT	84	struct iattr *, int, time_t);
1da177e4 LT	85	#ifdef CONFIG_NFSD_V4
6264d69d	86	__be32 nfsd4_set_nfs4_acl(struct svc_rqst , struct svc_fh ,
1da177e4 LT	87	struct nfs4_acl *);
	88	int nfsd4_get_nfs4_acl(struct svc_rqst , struct dentry , struct nfs4_acl **);
	89	#endif /* CONFIG_NFSD_V4 */
6264d69d	90	__be32 nfsd_create(struct svc_rqst , struct svc_fh ,
1da177e4 LT	91	char name, int len, struct iattr attrs,
	92	int type, dev_t rdev, struct svc_fh *res);
	93	#ifdef CONFIG_NFSD_V3
6264d69d AV	94	__be32 nfsd_access(struct svc_rqst , struct svc_fh , u32 , u32 );
6264d69d AV	95	__be32 nfsd_create_v3(struct svc_rqst , struct svc_fh ,
1da177e4 LT	96	char name, int len, struct iattr attrs,
1da177e4 LT	97	struct svc_fh *res, int createmode,
81ac95c5	98	u32 verifier, int truncp, int *created);
6264d69d	99	__be32 nfsd_commit(struct svc_rqst , struct svc_fh ,
1da177e4 LT	100	loff_t, unsigned long);
1da177e4 LT	101	#endif /* CONFIG_NFSD_V3 */
6264d69d	102	__be32 nfsd_open(struct svc_rqst , struct svc_fh , int,
1da177e4 LT	103	int, struct file **);
1da177e4 LT	104	void nfsd_close(struct file *);
6264d69d	105	__be32 nfsd_read(struct svc_rqst , struct svc_fh , struct file *,
1da177e4	106	loff_t, struct kvec , int, unsigned long );
6264d69d	107	__be32 nfsd_write(struct svc_rqst , struct svc_fh ,struct file *,
31dec253	108	loff_t, struct kvec ,int, unsigned long , int *);
6264d69d	109	__be32 nfsd_readlink(struct svc_rqst , struct svc_fh ,
1da177e4	110	char , int );
6264d69d	111	__be32 nfsd_symlink(struct svc_rqst , struct svc_fh ,
1da177e4 LT	112	char name, int len, char path, int plen,
1da177e4 LT	113	struct svc_fh res, struct iattr );
6264d69d	114	__be32 nfsd_link(struct svc_rqst , struct svc_fh ,
1da177e4	115	char , int, struct svc_fh );
6264d69d	116	__be32 nfsd_rename(struct svc_rqst *,
1da177e4 LT	117	struct svc_fh , char , int,
1da177e4 LT	118	struct svc_fh , char , int);
6264d69d	119	__be32 nfsd_remove(struct svc_rqst *,
1da177e4	120	struct svc_fh , char , int);
6264d69d	121	__be32 nfsd_unlink(struct svc_rqst , struct svc_fh , int type,
1da177e4 LT	122	char *name, int len);
	123	int nfsd_truncate(struct svc_rqst , struct svc_fh ,
	124	unsigned long size);
6264d69d	125	__be32 nfsd_readdir(struct svc_rqst , struct svc_fh ,
a0ad13ef	126	loff_t , struct readdir_cd , filldir_t);
6264d69d	127	__be32 nfsd_statfs(struct svc_rqst , struct svc_fh ,
04716e66	128	struct kstatfs *, int access);
1da177e4 LT	129
1da177e4 LT	130	int nfsd_notify_change(struct inode , struct iattr );
0ec757df BF	131	__be32 nfsd_permission(struct svc_rqst , struct svc_export ,
0ec757df BF	132	struct dentry *, int);
f193fbab	133	int nfsd_sync_dir(struct dentry *dp);
1da177e4	134
a257cdd0 AG	135	#if defined(CONFIG_NFSD_V2_ACL) \|\| defined(CONFIG_NFSD_V3_ACL)
	136	#ifdef CONFIG_NFSD_V2_ACL
	137	extern struct svc_version nfsd_acl_version2;
	138	#else
	139	#define nfsd_acl_version2 NULL
	140	#endif
	141	#ifdef CONFIG_NFSD_V3_ACL
	142	extern struct svc_version nfsd_acl_version3;
	143	#else
	144	#define nfsd_acl_version3 NULL
	145	#endif
	146	struct posix_acl nfsd_get_posix_acl(struct svc_fh , int);
	147	int nfsd_set_posix_acl(struct svc_fh , int, struct posix_acl );
	148	#endif
	149
6658d3a7 N	150	enum vers_op {NFSD_SET, NFSD_CLEAR, NFSD_TEST, NFSD_AVAIL };
	151	int nfsd_vers(int vers, enum vers_op change);
	152	void nfsd_reset_versions(void);
b41b66d6	153	int nfsd_create_serv(void);
6658d3a7	154
596bbe53	155	extern int nfsd_max_blksize;
1da177e4 LT	156
	157	/*
	158	* NFSv4 State
	159	*/
	160	#ifdef CONFIG_NFSD_V4
c2f1a551	161	extern unsigned int max_delegations;
e8ff2a84 BF	162	int nfs4_state_init(void);
	163	void nfsd4_free_slabs(void);
	164	void nfs4_state_start(void);
1da177e4 LT	165	void nfs4_state_shutdown(void);
	166	time_t nfs4_lease_time(void);
	167	void nfs4_reset_lease(time_t leasetime);
0964a3d3	168	int nfs4_reset_recoverydir(char *recdir);
1da177e4	169	#else
e8ff2a84 BF	170	static inline int nfs4_state_init(void) { return 0; }
	171	static inline void nfsd4_free_slabs(void) { }
	172	static inline void nfs4_state_start(void) { }
	173	static inline void nfs4_state_shutdown(void) { }
	174	static inline time_t nfs4_lease_time(void) { return 0; }
	175	static inline void nfs4_reset_lease(time_t leasetime) { }
	176	static inline int nfs4_reset_recoverydir(char *recdir) { return 0; }
1da177e4 LT	177	#endif
	178
	179	/*
	180	* lockd binding
	181	*/
	182	void nfsd_lockd_init(void);
	183	void nfsd_lockd_shutdown(void);
	184
	185
	186	/*
	187	* These macros provide pre-xdr'ed values for faster operation.
	188	*/
77f18f5e HH	189	#define nfs_ok cpu_to_be32(NFS_OK)
	190	#define nfserr_perm cpu_to_be32(NFSERR_PERM)
	191	#define nfserr_noent cpu_to_be32(NFSERR_NOENT)
	192	#define nfserr_io cpu_to_be32(NFSERR_IO)
	193	#define nfserr_nxio cpu_to_be32(NFSERR_NXIO)
	194	#define nfserr_eagain cpu_to_be32(NFSERR_EAGAIN)
	195	#define nfserr_acces cpu_to_be32(NFSERR_ACCES)
	196	#define nfserr_exist cpu_to_be32(NFSERR_EXIST)
	197	#define nfserr_xdev cpu_to_be32(NFSERR_XDEV)
	198	#define nfserr_nodev cpu_to_be32(NFSERR_NODEV)
	199	#define nfserr_notdir cpu_to_be32(NFSERR_NOTDIR)
	200	#define nfserr_isdir cpu_to_be32(NFSERR_ISDIR)
	201	#define nfserr_inval cpu_to_be32(NFSERR_INVAL)
	202	#define nfserr_fbig cpu_to_be32(NFSERR_FBIG)
	203	#define nfserr_nospc cpu_to_be32(NFSERR_NOSPC)
	204	#define nfserr_rofs cpu_to_be32(NFSERR_ROFS)
	205	#define nfserr_mlink cpu_to_be32(NFSERR_MLINK)
	206	#define nfserr_opnotsupp cpu_to_be32(NFSERR_OPNOTSUPP)
	207	#define nfserr_nametoolong cpu_to_be32(NFSERR_NAMETOOLONG)
	208	#define nfserr_notempty cpu_to_be32(NFSERR_NOTEMPTY)
	209	#define nfserr_dquot cpu_to_be32(NFSERR_DQUOT)
	210	#define nfserr_stale cpu_to_be32(NFSERR_STALE)
	211	#define nfserr_remote cpu_to_be32(NFSERR_REMOTE)
	212	#define nfserr_wflush cpu_to_be32(NFSERR_WFLUSH)
	213	#define nfserr_badhandle cpu_to_be32(NFSERR_BADHANDLE)
	214	#define nfserr_notsync cpu_to_be32(NFSERR_NOT_SYNC)
	215	#define nfserr_badcookie cpu_to_be32(NFSERR_BAD_COOKIE)
	216	#define nfserr_notsupp cpu_to_be32(NFSERR_NOTSUPP)
	217	#define nfserr_toosmall cpu_to_be32(NFSERR_TOOSMALL)
	218	#define nfserr_serverfault cpu_to_be32(NFSERR_SERVERFAULT)
	219	#define nfserr_badtype cpu_to_be32(NFSERR_BADTYPE)
	220	#define nfserr_jukebox cpu_to_be32(NFSERR_JUKEBOX)
	221	#define nfserr_denied cpu_to_be32(NFSERR_DENIED)
	222	#define nfserr_deadlock cpu_to_be32(NFSERR_DEADLOCK)
	223	#define nfserr_expired cpu_to_be32(NFSERR_EXPIRED)
	224	#define nfserr_bad_cookie cpu_to_be32(NFSERR_BAD_COOKIE)
	225	#define nfserr_same cpu_to_be32(NFSERR_SAME)
	226	#define nfserr_clid_inuse cpu_to_be32(NFSERR_CLID_INUSE)
	227	#define nfserr_stale_clientid cpu_to_be32(NFSERR_STALE_CLIENTID)
	228	#define nfserr_resource cpu_to_be32(NFSERR_RESOURCE)
	229	#define nfserr_moved cpu_to_be32(NFSERR_MOVED)
	230	#define nfserr_nofilehandle cpu_to_be32(NFSERR_NOFILEHANDLE)
	231	#define nfserr_minor_vers_mismatch cpu_to_be32(NFSERR_MINOR_VERS_MISMATCH)
	232	#define nfserr_share_denied cpu_to_be32(NFSERR_SHARE_DENIED)
	233	#define nfserr_stale_stateid cpu_to_be32(NFSERR_STALE_STATEID)
	234	#define nfserr_old_stateid cpu_to_be32(NFSERR_OLD_STATEID)
	235	#define nfserr_bad_stateid cpu_to_be32(NFSERR_BAD_STATEID)
	236	#define nfserr_bad_seqid cpu_to_be32(NFSERR_BAD_SEQID)
	237	#define nfserr_symlink cpu_to_be32(NFSERR_SYMLINK)
	238	#define nfserr_not_same cpu_to_be32(NFSERR_NOT_SAME)
	239	#define nfserr_restorefh cpu_to_be32(NFSERR_RESTOREFH)
	240	#define nfserr_attrnotsupp cpu_to_be32(NFSERR_ATTRNOTSUPP)
	241	#define nfserr_bad_xdr cpu_to_be32(NFSERR_BAD_XDR)
	242	#define nfserr_openmode cpu_to_be32(NFSERR_OPENMODE)
	243	#define nfserr_locks_held cpu_to_be32(NFSERR_LOCKS_HELD)
	244	#define nfserr_op_illegal cpu_to_be32(NFSERR_OP_ILLEGAL)
	245	#define nfserr_grace cpu_to_be32(NFSERR_GRACE)
	246	#define nfserr_no_grace cpu_to_be32(NFSERR_NO_GRACE)
	247	#define nfserr_reclaim_bad cpu_to_be32(NFSERR_RECLAIM_BAD)
	248	#define nfserr_badname cpu_to_be32(NFSERR_BADNAME)
	249	#define nfserr_cb_path_down cpu_to_be32(NFSERR_CB_PATH_DOWN)
	250	#define nfserr_locked cpu_to_be32(NFSERR_LOCKED)
	251	#define nfserr_wrongsec cpu_to_be32(NFSERR_WRONGSEC)
	252	#define nfserr_replay_me cpu_to_be32(NFSERR_REPLAY_ME)
1da177e4 LT	253
	254	/* error codes for internal use */
	255	/* if a request fails due to kmalloc failure, it gets dropped.
	256	* Client should resend eventually
	257	*/
77f18f5e	258	#define nfserr_dropit cpu_to_be32(30000)
1da177e4	259	/* end-of-file indicator in readdir */
77f18f5e	260	#define nfserr_eof cpu_to_be32(30001)
1da177e4 LT	261
	262	/* Check for dir entries '.' and '..' */
	263	#define isdotent(n, l) (l < 3 && n[0] == '.' && (l == 1 \|\| n[1] == '.'))
	264
	265	/*
	266	* Time of server startup
	267	*/
	268	extern struct timeval nfssvc_boot;
	269
1da177e4 LT	270	#ifdef CONFIG_NFSD_V4
	271
	272	/* before processing a COMPOUND operation, we have to check that there
	273	* is enough space in the buffer for XDR encode to succeed. otherwise,
	274	* we might process an operation with side effects, and be unable to
	275	* tell the client that the operation succeeded.
	276	*
e5710199	277	* COMPOUND_SLACK_SPACE - this is the minimum bytes of buffer space
1da177e4 LT	278	* needed to encode an "ordinary" _successful_ operation. (GETATTR,
	279	* READ, READDIR, and READLINK have their own buffer checks.) if we
	280	* fall below this level, we fail the next operation with NFS4ERR_RESOURCE.
	281	*
e5710199	282	* COMPOUND_ERR_SLACK_SPACE - this is the minimum bytes of buffer space
1da177e4 LT	283	* needed to encode an operation which has failed with NFS4ERR_RESOURCE.
	284	* care is taken to ensure that we never fall below this level for any
	285	* reason.
	286	*/
	287	#define COMPOUND_SLACK_SPACE 140 /* OP_GETFH */
	288	#define COMPOUND_ERR_SLACK_SPACE 12 /* OP_SETATTR */
	289
	290	#define NFSD_LEASE_TIME (nfs4_lease_time())
	291	#define NFSD_LAUNDROMAT_MINTIMEOUT 10 /* seconds */
	292
	293	/*
	294	* The following attributes are currently not supported by the NFSv4 server:
	295	* ARCHIVE (deprecated anyway)
1da177e4 LT	296	* HIDDEN (unlikely to be supported any time soon)
	297	* MIMETYPE (unlikely to be supported any time soon)
	298	* QUOTA_* (will be supported in a forthcoming patch)
	299	* SYSTEM (unlikely to be supported any time soon)
	300	* TIME_BACKUP (unlikely to be supported any time soon)
	301	* TIME_CREATE (unlikely to be supported any time soon)
	302	*/
	303	#define NFSD_SUPPORTED_ATTRS_WORD0 \
	304	(FATTR4_WORD0_SUPPORTED_ATTRS \| FATTR4_WORD0_TYPE \| FATTR4_WORD0_FH_EXPIRE_TYPE \
	305	\| FATTR4_WORD0_CHANGE \| FATTR4_WORD0_SIZE \| FATTR4_WORD0_LINK_SUPPORT \
	306	\| FATTR4_WORD0_SYMLINK_SUPPORT \| FATTR4_WORD0_NAMED_ATTR \| FATTR4_WORD0_FSID \
	307	\| FATTR4_WORD0_UNIQUE_HANDLES \| FATTR4_WORD0_LEASE_TIME \| FATTR4_WORD0_RDATTR_ERROR \
	308	\| FATTR4_WORD0_ACLSUPPORT \| FATTR4_WORD0_CANSETTIME \| FATTR4_WORD0_CASE_INSENSITIVE \
	309	\| FATTR4_WORD0_CASE_PRESERVING \| FATTR4_WORD0_CHOWN_RESTRICTED \
	310	\| FATTR4_WORD0_FILEHANDLE \| FATTR4_WORD0_FILEID \| FATTR4_WORD0_FILES_AVAIL \
81c3f413	311	\| FATTR4_WORD0_FILES_FREE \| FATTR4_WORD0_FILES_TOTAL \| FATTR4_WORD0_FS_LOCATIONS \| FATTR4_WORD0_HOMOGENEOUS \
1da177e4 LT	312	\| FATTR4_WORD0_MAXFILESIZE \| FATTR4_WORD0_MAXLINK \| FATTR4_WORD0_MAXNAME \
	313	\| FATTR4_WORD0_MAXREAD \| FATTR4_WORD0_MAXWRITE \| FATTR4_WORD0_ACL)
	314
	315	#define NFSD_SUPPORTED_ATTRS_WORD1 \
	316	(FATTR4_WORD1_MODE \| FATTR4_WORD1_NO_TRUNC \| FATTR4_WORD1_NUMLINKS \
	317	\| FATTR4_WORD1_OWNER \| FATTR4_WORD1_OWNER_GROUP \| FATTR4_WORD1_RAWDEV \
	318	\| FATTR4_WORD1_SPACE_AVAIL \| FATTR4_WORD1_SPACE_FREE \| FATTR4_WORD1_SPACE_TOTAL \
	319	\| FATTR4_WORD1_SPACE_USED \| FATTR4_WORD1_TIME_ACCESS \| FATTR4_WORD1_TIME_ACCESS_SET \
	320	\| FATTR4_WORD1_TIME_DELTA \| FATTR4_WORD1_TIME_METADATA \
	321	\| FATTR4_WORD1_TIME_MODIFY \| FATTR4_WORD1_TIME_MODIFY_SET \| FATTR4_WORD1_MOUNTED_ON_FILEID)
	322
	323	/* These will return ERR_INVAL if specified in GETATTR or READDIR. */
	324	#define NFSD_WRITEONLY_ATTRS_WORD1 \
	325	(FATTR4_WORD1_TIME_ACCESS_SET \| FATTR4_WORD1_TIME_MODIFY_SET)
	326
	327	/* These are the only attrs allowed in CREATE/OPEN/SETATTR. */
	328	#define NFSD_WRITEABLE_ATTRS_WORD0 \
	329	(FATTR4_WORD0_SIZE \| FATTR4_WORD0_ACL )
	330	#define NFSD_WRITEABLE_ATTRS_WORD1 \
	331	(FATTR4_WORD1_MODE \| FATTR4_WORD1_OWNER \| FATTR4_WORD1_OWNER_GROUP \
e36cd4a2	332	\| FATTR4_WORD1_TIME_ACCESS_SET \| FATTR4_WORD1_TIME_MODIFY_SET)
1da177e4 LT	333
	334	#endif /* CONFIG_NFSD_V4 */
	335
1da177e4	336	#endif /* LINUX_NFSD_NFSD_H */