[deliverable/linux.git] / include / linux / nfsd / export.h

/*
 * include/linux/nfsd/export.h
 * 
 * Public declarations for NFS exports. The definitions for the
 * syscall interface are in nfsctl.h
 *
 * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
 */

#ifndef NFSD_EXPORT_H
#define NFSD_EXPORT_H

#include <asm/types.h>
#ifdef __KERNEL__
# include <linux/types.h>
# include <linux/in.h>
#endif

/*
 * Important limits for the exports stuff.
 */
#define NFSCLNT_IDMAX		1024
#define NFSCLNT_ADDRMAX		16
#define NFSCLNT_KEYMAX		32

/*
 * Export flags.
 */
#define NFSEXP_READONLY		0x0001
#define NFSEXP_INSECURE_PORT	0x0002
#define NFSEXP_ROOTSQUASH	0x0004
#define NFSEXP_ALLSQUASH	0x0008
#define NFSEXP_ASYNC		0x0010
#define NFSEXP_GATHERED_WRITES	0x0020
/* 40 80 100 currently unused */
#define NFSEXP_NOHIDE		0x0200
#define NFSEXP_NOSUBTREECHECK	0x0400
#define	NFSEXP_NOAUTHNLM	0x0800		/* Don't authenticate NLM requests - just trust */
#define NFSEXP_MSNFS		0x1000	/* do silly things that MS clients expect */
#define NFSEXP_FSID		0x2000
#define	NFSEXP_CROSSMOUNT	0x4000
#define	NFSEXP_NOACL		0x8000	/* reserved for possible ACL related use */
#define NFSEXP_ALLFLAGS		0xFE3F


#ifdef __KERNEL__

struct svc_export {
	struct cache_head	h;
	struct auth_domain *	ex_client;
	int			ex_flags;
	struct vfsmount *	ex_mnt;
	struct dentry *		ex_dentry;
	char *			ex_path;
	uid_t			ex_anon_uid;
	gid_t			ex_anon_gid;
	int			ex_fsid;
};

/* an "export key" (expkey) maps a filehandlefragement to an
 * svc_export for a given client.  There can be two per export, one
 * for type 0 (dev/ino), one for type 1 (fsid)
 */
struct svc_expkey {
	struct cache_head	h;

	struct auth_domain *	ek_client;
	int			ek_fsidtype;
	u32			ek_fsid[3];

	struct vfsmount *	ek_mnt;
	struct dentry *		ek_dentry;
};

#define EX_SECURE(exp)		(!((exp)->ex_flags & NFSEXP_INSECURE_PORT))
#define EX_ISSYNC(exp)		(!((exp)->ex_flags & NFSEXP_ASYNC))
#define EX_RDONLY(exp)		((exp)->ex_flags & NFSEXP_READONLY)
#define EX_NOHIDE(exp)		((exp)->ex_flags & NFSEXP_NOHIDE)
#define EX_WGATHER(exp)		((exp)->ex_flags & NFSEXP_GATHERED_WRITES)


/*
 * Function declarations
 */
void			nfsd_export_init(void);
void			nfsd_export_shutdown(void);
void			nfsd_export_flush(void);
void			exp_readlock(void);
void			exp_readunlock(void);
struct svc_export *	exp_get_by_name(struct auth_domain *clp,
					struct vfsmount *mnt,
					struct dentry *dentry,
					struct cache_req *reqp);
struct svc_export *	exp_parent(struct auth_domain *clp,
				   struct vfsmount *mnt,
				   struct dentry *dentry,
				   struct cache_req *reqp);
int			exp_rootfh(struct auth_domain *, 
					char *path, struct knfsd_fh *, int maxsize);
int			exp_pseudoroot(struct auth_domain *, struct svc_fh *fhp, struct cache_req *creq);
int			nfserrno(int errno);

extern struct cache_detail svc_export_cache;

static inline void exp_put(struct svc_export *exp)
{
	cache_put(&exp->h, &svc_export_cache);
}

static inline void exp_get(struct svc_export *exp)
{
	cache_get(&exp->h);
}
extern struct svc_export *
exp_find(struct auth_domain *clp, int fsid_type, u32 *fsidv,
	 struct cache_req *reqp);

#endif /* __KERNEL__ */

#endif /* NFSD_EXPORT_H */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* include/linux/nfsd/export.h
	3	*
	4	* Public declarations for NFS exports. The definitions for the
	5	* syscall interface are in nfsctl.h
	6	*
	7	* Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
	8	*/
	9
	10	#ifndef NFSD_EXPORT_H
	11	#define NFSD_EXPORT_H
	12
	13	#include <asm/types.h>
	14	#ifdef __KERNEL__
	15	# include <linux/types.h>
	16	# include <linux/in.h>
	17	#endif
	18
	19	/*
	20	* Important limits for the exports stuff.
	21	*/
	22	#define NFSCLNT_IDMAX 1024
	23	#define NFSCLNT_ADDRMAX 16
	24	#define NFSCLNT_KEYMAX 32
	25
	26	/*
	27	* Export flags.
	28	*/
	29	#define NFSEXP_READONLY 0x0001
	30	#define NFSEXP_INSECURE_PORT 0x0002
	31	#define NFSEXP_ROOTSQUASH 0x0004
	32	#define NFSEXP_ALLSQUASH 0x0008
	33	#define NFSEXP_ASYNC 0x0010
	34	#define NFSEXP_GATHERED_WRITES 0x0020
	35	/* 40 80 100 currently unused */
	36	#define NFSEXP_NOHIDE 0x0200
	37	#define NFSEXP_NOSUBTREECHECK 0x0400
	38	#define NFSEXP_NOAUTHNLM 0x0800 /* Don't authenticate NLM requests - just trust */
	39	#define NFSEXP_MSNFS 0x1000 /* do silly things that MS clients expect */
	40	#define NFSEXP_FSID 0x2000
	41	#define NFSEXP_CROSSMOUNT 0x4000
	42	#define NFSEXP_NOACL 0x8000 /* reserved for possible ACL related use */
	43	#define NFSEXP_ALLFLAGS 0xFE3F
	44
	45
	46	#ifdef __KERNEL__
	47
	48	struct svc_export {
	49	struct cache_head h;
	50	struct auth_domain * ex_client;
	51	int ex_flags;
	52	struct vfsmount * ex_mnt;
	53	struct dentry * ex_dentry;
b009a873	54	char * ex_path;
1da177e4 LT	55	uid_t ex_anon_uid;
	56	gid_t ex_anon_gid;
	57	int ex_fsid;
	58	};
	59
	60	/* an "export key" (expkey) maps a filehandlefragement to an
	61	* svc_export for a given client. There can be two per export, one
	62	* for type 0 (dev/ino), one for type 1 (fsid)
	63	*/
	64	struct svc_expkey {
	65	struct cache_head h;
	66
	67	struct auth_domain * ek_client;
	68	int ek_fsidtype;
	69	u32 ek_fsid[3];
	70
eab7e2e6 N	71	struct vfsmount * ek_mnt;
eab7e2e6 N	72	struct dentry * ek_dentry;
1da177e4 LT	73	};
	74
	75	#define EX_SECURE(exp) (!((exp)->ex_flags & NFSEXP_INSECURE_PORT))
	76	#define EX_ISSYNC(exp) (!((exp)->ex_flags & NFSEXP_ASYNC))
	77	#define EX_RDONLY(exp) ((exp)->ex_flags & NFSEXP_READONLY)
	78	#define EX_NOHIDE(exp) ((exp)->ex_flags & NFSEXP_NOHIDE)
	79	#define EX_WGATHER(exp) ((exp)->ex_flags & NFSEXP_GATHERED_WRITES)
	80
	81
	82	/*
	83	* Function declarations
	84	*/
	85	void nfsd_export_init(void);
	86	void nfsd_export_shutdown(void);
	87	void nfsd_export_flush(void);
	88	void exp_readlock(void);
	89	void exp_readunlock(void);
1da177e4 LT	90	struct svc_export * exp_get_by_name(struct auth_domain *clp,
	91	struct vfsmount *mnt,
	92	struct dentry *dentry,
	93	struct cache_req *reqp);
	94	struct svc_export * exp_parent(struct auth_domain *clp,
	95	struct vfsmount *mnt,
	96	struct dentry *dentry,
	97	struct cache_req *reqp);
	98	int exp_rootfh(struct auth_domain *,
	99	char path, struct knfsd_fh , int maxsize);
	100	int exp_pseudoroot(struct auth_domain , struct svc_fh fhp, struct cache_req *creq);
	101	int nfserrno(int errno);
	102
74cae61a	103	extern struct cache_detail svc_export_cache;
1da177e4 LT	104
	105	static inline void exp_put(struct svc_export *exp)
	106	{
baab935f	107	cache_put(&exp->h, &svc_export_cache);
1da177e4 LT	108	}
	109
	110	static inline void exp_get(struct svc_export *exp)
	111	{
	112	cache_get(&exp->h);
	113	}
eab7e2e6	114	extern struct svc_export *
1da177e4	115	exp_find(struct auth_domain clp, int fsid_type, u32 fsidv,
eab7e2e6	116	struct cache_req *reqp);
1da177e4 LT	117
	118	#endif /* __KERNEL__ */
	119
	120	#endif /* NFSD_EXPORT_H */
	121