WebSVN - shark - Blame - Rev 423 - /shark/trunk/drivers/linuxc26/include/linux/nfsd/export.h

Rev	Author	Line No.	Line
423	giacomo	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;
		54	uid_t ex_anon_uid;
		55	gid_t ex_anon_gid;
		56	int ex_fsid;
		57	};
		58
		59	/* an "export key" (expkey) maps a filehandlefragement to an
		60	* svc_export for a given client. There can be two per export, one
		61	* for type 0 (dev/ino), one for type 1 (fsid)
		62	*/
		63	struct svc_expkey {
		64	struct cache_head h;
		65
		66	struct auth_domain * ek_client;
		67	int ek_fsidtype;
		68	u32 ek_fsid[3];
		69
		70	struct svc_export * ek_export;
		71	};
		72
		73	#define EX_SECURE(exp) (!((exp)->ex_flags & NFSEXP_INSECURE_PORT))
		74	#define EX_ISSYNC(exp) (!((exp)->ex_flags & NFSEXP_ASYNC))
		75	#define EX_RDONLY(exp) ((exp)->ex_flags & NFSEXP_READONLY)
		76	#define EX_NOHIDE(exp) ((exp)->ex_flags & NFSEXP_NOHIDE)
		77	#define EX_WGATHER(exp) ((exp)->ex_flags & NFSEXP_GATHERED_WRITES)
		78
		79
		80	/*
		81	* Function declarations
		82	*/
		83	void nfsd_export_init(void);
		84	void nfsd_export_shutdown(void);
		85	void nfsd_export_flush(void);
		86	void exp_readlock(void);
		87	void exp_readunlock(void);
		88	struct svc_expkey * exp_find_key(struct auth_domain *clp,
		89	int fsid_type, u32 *fsidv,
		90	struct cache_req *reqp);
		91	struct svc_export * exp_get_by_name(struct auth_domain *clp,
		92	struct vfsmount *mnt,
		93	struct dentry *dentry,
		94	struct cache_req *reqp);
		95	struct svc_export * exp_parent(struct auth_domain *clp,
		96	struct vfsmount *mnt,
		97	struct dentry *dentry,
		98	struct cache_req *reqp);
		99	int exp_rootfh(struct auth_domain *,
		100	char path, struct knfsd_fh , int maxsize);
		101	int exp_pseudoroot(struct auth_domain , struct svc_fh fhp, struct cache_req *creq);
		102	int nfserrno(int errno);
		103
		104	extern void expkey_put(struct cache_head item, struct cache_detail cd);
		105	extern void svc_export_put(struct cache_head item, struct cache_detail cd);
		106	extern struct cache_detail svc_export_cache, svc_expkey_cache;
		107
		108	static inline void exp_put(struct svc_export *exp)
		109	{
		110	svc_export_put(&exp->h, &svc_export_cache);
		111	}
		112
		113	static inline struct svc_export *
		114	exp_find(struct auth_domain clp, int fsid_type, u32 fsidv,
		115	struct cache_req *reqp)
		116	{
		117	struct svc_expkey *ek = exp_find_key(clp, fsid_type, fsidv, reqp);
		118	if (ek && !IS_ERR(ek)) {
		119	struct svc_export *exp = ek->ek_export;
		120	int err;
		121	cache_get(&exp->h);
		122	expkey_put(&ek->h, &svc_expkey_cache);
		123	if (exp &&
		124	(err = cache_check(&svc_export_cache, &exp->h, reqp)))
		125	exp = ERR_PTR(err);
		126	return exp;
		127	} else
		128	return ERR_PTR(PTR_ERR(ek));
		129	}
		130
		131	#endif /* __KERNEL__ */
		132
		133	#endif /* NFSD_EXPORT_H */
		134

Subversion Repositories shark

(root)/shark/trunk/drivers/linuxc26/include/linux/nfsd/export.h - Rev 423