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 _UAPINFSD_EXPORT_H |
12 | #define _UAPINFSD_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 /* _UAPINFSD_EXPORT_H */ |
80 | |