export.h

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/*
 * 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 <[email protected]>
 */

#ifndef _UAPINFSD_EXPORT_H
#define _UAPINFSD_EXPORT_H

# include <linux/types.h>

/*
 * 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; no longer supported */
#define NFSEXP_FSID     0x2000
#define NFSEXP_CROSSMOUNT   0x4000
#define NFSEXP_NOACL        0x8000  /* reserved for possible ACL related use */
/*
 * The NFSEXP_V4ROOT flag causes the kernel to give access only to NFSv4
 * clients, and only to the single directory that is the root of the
 * export; further lookup and readdir operations are treated as if every
 * subdirectory was a mountpoint, and ignored if they are not themselves
 * exported.  This is used by nfsd and mountd to construct the NFSv4
 * pseudofilesystem, which provides access only to paths leading to each
 * exported filesystem.
 */
#define NFSEXP_V4ROOT       0x10000
/* All flags that we claim to support.  (Note we don't support NOACL.) */
#define NFSEXP_ALLFLAGS     0x17E3F

/* The flags that may vary depending on security flavor: */
#define NFSEXP_SECINFO_FLAGS    (NFSEXP_READONLY | NFSEXP_ROOTSQUASH \
                    | NFSEXP_ALLSQUASH \
                    | NFSEXP_INSECURE_PORT)


#endif /* _UAPINFSD_EXPORT_H */