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01: /*
02:  * include/linux/nfsd/export.h
03:  * 
04:  * Public declarations for NFS exports. The definitions for the
05:  * syscall interface are in nfsctl.h
06:  *
07:  * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
08:  */
09: 
10: #ifndef NFSD_EXPORT_H
11: #define NFSD_EXPORT_H
12: 
13: # include <linux/types.h>
14: 
15: /*
16:  * Important limits for the exports stuff.
17:  */
18: #define NFSCLNT_IDMAX           1024
19: #define NFSCLNT_ADDRMAX         16
20: #define NFSCLNT_KEYMAX          32
21: 
22: /*
23:  * Export flags.
24:  */
25: #define NFSEXP_READONLY         0x0001
26: #define NFSEXP_INSECURE_PORT    0x0002
27: #define NFSEXP_ROOTSQUASH       0x0004
28: #define NFSEXP_ALLSQUASH        0x0008
29: #define NFSEXP_ASYNC            0x0010
30: #define NFSEXP_GATHERED_WRITES  0x0020
31: /* 40 80 100 currently unused */
32: #define NFSEXP_NOHIDE           0x0200
33: #define NFSEXP_NOSUBTREECHECK   0x0400
34: #define NFSEXP_NOAUTHNLM        0x0800          /* Don't authenticate NLM requests - just trust */
35: #define NFSEXP_MSNFS            0x1000  /* do silly things that MS clients expect; no longer supported */
36: #define NFSEXP_FSID             0x2000
37: #define NFSEXP_CROSSMOUNT       0x4000
38: #define NFSEXP_NOACL            0x8000  /* reserved for possible ACL related use */
39: /*
40:  * The NFSEXP_V4ROOT flag causes the kernel to give access only to NFSv4
41:  * clients, and only to the single directory that is the root of the
42:  * export; further lookup and readdir operations are treated as if every
43:  * subdirectory was a mountpoint, and ignored if they are not themselves
44:  * exported.  This is used by nfsd and mountd to construct the NFSv4
45:  * pseudofilesystem, which provides access only to paths leading to each
46:  * exported filesystem.
47:  */
48: #define NFSEXP_V4ROOT           0x10000
49: /* All flags that we claim to support.  (Note we don't support NOACL.) */
50: #define NFSEXP_ALLFLAGS         0x17E3F
51: 
52: /* The flags that may vary depending on security flavor: */
53: #define NFSEXP_SECINFO_FLAGS    (NFSEXP_READONLY | NFSEXP_ROOTSQUASH \
54:                                         | NFSEXP_ALLSQUASH \
55:                                         | NFSEXP_INSECURE_PORT)
56: 
57: 
58: #endif /* NFSD_EXPORT_H */
59: 
60: 

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