linux-headers (unknown)
1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /*
3 * include/linux/nfsd/export.h
4 *
5 * Public declarations for NFS exports. The definitions for the
6 * syscall interface are in nfsctl.h
7 *
8 * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de>
9 */
10
11 #ifndef NFSD_EXPORT_H
12 #define NFSD_EXPORT_H
13
14 # include <linux/types.h>
15
16 /*
17 * Important limits for the exports stuff.
18 */
19 #define NFSCLNT_IDMAX 1024
20 #define NFSCLNT_ADDRMAX 16
21 #define NFSCLNT_KEYMAX 32
22
23 /*
24 * Export flags.
25 *
26 * Please update the expflags[] array in fs/nfsd/export.c when adding
27 * a new flag.
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 #define NFSEXP_NOREADDIRPLUS 0x0040
36 #define NFSEXP_SECURITY_LABEL 0x0080
37 /* 0x100 currently unused */
38 #define NFSEXP_NOHIDE 0x0200
39 #define NFSEXP_NOSUBTREECHECK 0x0400
40 #define NFSEXP_NOAUTHNLM 0x0800 /* Don't authenticate NLM requests - just trust */
41 #define NFSEXP_MSNFS 0x1000 /* do silly things that MS clients expect; no longer supported */
42 #define NFSEXP_FSID 0x2000
43 #define NFSEXP_CROSSMOUNT 0x4000
44 #define NFSEXP_NOACL 0x8000 /* reserved for possible ACL related use */
45 /*
46 * The NFSEXP_V4ROOT flag causes the kernel to give access only to NFSv4
47 * clients, and only to the single directory that is the root of the
48 * export; further lookup and readdir operations are treated as if every
49 * subdirectory was a mountpoint, and ignored if they are not themselves
50 * exported. This is used by nfsd and mountd to construct the NFSv4
51 * pseudofilesystem, which provides access only to paths leading to each
52 * exported filesystem.
53 */
54 #define NFSEXP_V4ROOT 0x10000
55 #define NFSEXP_PNFS 0x20000
56
57 /* All flags that we claim to support. (Note we don't support NOACL.) */
58 #define NFSEXP_ALLFLAGS 0x3FEFF
59
60 /* The flags that may vary depending on security flavor: */
61 #define NFSEXP_SECINFO_FLAGS (NFSEXP_READONLY | NFSEXP_ROOTSQUASH \
62 | NFSEXP_ALLSQUASH \
63 | NFSEXP_INSECURE_PORT)
64
65 /*
66 * Transport layer security policies that are permitted to access
67 * an export
68 */
69 #define NFSEXP_XPRTSEC_NONE 0x0001
70 #define NFSEXP_XPRTSEC_TLS 0x0002
71 #define NFSEXP_XPRTSEC_MTLS 0x0004
72
73 #define NFSEXP_XPRTSEC_NUM (3)
74
75 #define NFSEXP_XPRTSEC_ALL (NFSEXP_XPRTSEC_NONE | \
76 NFSEXP_XPRTSEC_TLS | \
77 NFSEXP_XPRTSEC_MTLS)
78
79 #endif /* NFSD_EXPORT_H */
Browse
Usage
Versions