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 _UAPINFSD_EXPORT_H
11#define _UAPINFSD_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 * Please update the expflags[] array in fs/nfsd/export.c when adding
26 * a new flag.
27 */
28#define NFSEXP_READONLY		0x0001
29#define NFSEXP_INSECURE_PORT	0x0002
30#define NFSEXP_ROOTSQUASH	0x0004
31#define NFSEXP_ALLSQUASH	0x0008
32#define NFSEXP_ASYNC		0x0010
33#define NFSEXP_GATHERED_WRITES	0x0020
34#define NFSEXP_NOREADDIRPLUS    0x0040
35/* 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; no longer supported */
40#define NFSEXP_FSID		0x2000
41#define	NFSEXP_CROSSMOUNT	0x4000
42#define	NFSEXP_NOACL		0x8000	/* reserved for possible ACL related use */
43/*
44 * The NFSEXP_V4ROOT flag causes the kernel to give access only to NFSv4
45 * clients, and only to the single directory that is the root of the
46 * export; further lookup and readdir operations are treated as if every
47 * subdirectory was a mountpoint, and ignored if they are not themselves
48 * exported.  This is used by nfsd and mountd to construct the NFSv4
49 * pseudofilesystem, which provides access only to paths leading to each
50 * exported filesystem.
51 */
52#define	NFSEXP_V4ROOT		0x10000
53#define NFSEXP_PNFS		0x20000
54
55/* All flags that we claim to support.  (Note we don't support NOACL.) */
56#define NFSEXP_ALLFLAGS		0x3FE7F
57
58/* The flags that may vary depending on security flavor: */
59#define NFSEXP_SECINFO_FLAGS	(NFSEXP_READONLY | NFSEXP_ROOTSQUASH \
60					| NFSEXP_ALLSQUASH \
61					| NFSEXP_INSECURE_PORT)
62
63
64#endif /* _UAPINFSD_EXPORT_H */
65