2 * include/linux/nfsd/export.h
4 * Public declarations for NFS exports. The definitions for the
5 * syscall interface are in nfsctl.h
7 * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
13 #include <asm/types.h>
15 # include <linux/types.h>
16 # include <linux/in.h>
20 * Important limits for the exports stuff.
22 #define NFSCLNT_IDMAX 1024
23 #define NFSCLNT_ADDRMAX 16
24 #define NFSCLNT_KEYMAX 32
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
50 struct auth_domain
* ex_client
;
52 struct vfsmount
* ex_mnt
;
53 struct dentry
* ex_dentry
;
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)
66 struct auth_domain
* ek_client
;
70 struct vfsmount
* ek_mnt
;
71 struct dentry
* ek_dentry
;
74 #define EX_SECURE(exp) (!((exp)->ex_flags & NFSEXP_INSECURE_PORT))
75 #define EX_ISSYNC(exp) (!((exp)->ex_flags & NFSEXP_ASYNC))
76 #define EX_RDONLY(exp) ((exp)->ex_flags & NFSEXP_READONLY)
77 #define EX_NOHIDE(exp) ((exp)->ex_flags & NFSEXP_NOHIDE)
78 #define EX_WGATHER(exp) ((exp)->ex_flags & NFSEXP_GATHERED_WRITES)
82 * Function declarations
84 void nfsd_export_init(void);
85 void nfsd_export_shutdown(void);
86 void nfsd_export_flush(void);
87 void exp_readlock(void);
88 void exp_readunlock(void);
89 struct svc_expkey
* exp_find_key(struct auth_domain
*clp
,
90 int fsid_type
, u32
*fsidv
,
91 struct cache_req
*reqp
);
92 struct svc_export
* exp_get_by_name(struct auth_domain
*clp
,
94 struct dentry
*dentry
,
95 struct cache_req
*reqp
);
96 struct svc_export
* exp_parent(struct auth_domain
*clp
,
98 struct dentry
*dentry
,
99 struct cache_req
*reqp
);
100 int exp_rootfh(struct auth_domain
*,
101 char *path
, struct knfsd_fh
*, int maxsize
);
102 int exp_pseudoroot(struct auth_domain
*, struct svc_fh
*fhp
, struct cache_req
*creq
);
103 int nfserrno(int errno
);
105 extern struct cache_detail svc_export_cache
, svc_expkey_cache
;
107 static inline void exp_put(struct svc_export
*exp
)
109 cache_put(&exp
->h
, &svc_export_cache
);
112 static inline void exp_get(struct svc_export
*exp
)
116 extern struct svc_export
*
117 exp_find(struct auth_domain
*clp
, int fsid_type
, u32
*fsidv
,
118 struct cache_req
*reqp
);
120 #endif /* __KERNEL__ */
122 #endif /* NFSD_EXPORT_H */