| Christopher Ferris | 2598113 | 2017-11-14 16:53:49 -0800 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| Ben Cheng | 30692c6 | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 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. |
| Christopher Ferris | 12e1f28 | 2016-02-04 12:35:07 -0800 | [diff] [blame] | 25 | * |
| 26 | * Please update the expflags[] array in fs/nfsd/export.c when adding |
| 27 | * a new flag. |
| Ben Cheng | 30692c6 | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 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 |
| Christopher Ferris | 7c0b639 | 2015-01-23 15:34:26 -0800 | [diff] [blame] | 35 | #define NFSEXP_NOREADDIRPLUS 0x0040 |
| Christopher Ferris | 0543f74 | 2017-07-26 13:09:46 -0700 | [diff] [blame] | 36 | #define NFSEXP_SECURITY_LABEL 0x0080 |
| 37 | /* 0x100 currently unused */ |
| Ben Cheng | 30692c6 | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 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 |
| Christopher Ferris | 12e1f28 | 2016-02-04 12:35:07 -0800 | [diff] [blame] | 55 | #define NFSEXP_PNFS 0x20000 |
| 56 | |
| Ben Cheng | 30692c6 | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 57 | /* All flags that we claim to support. (Note we don't support NOACL.) */ |
| Christopher Ferris | 0543f74 | 2017-07-26 13:09:46 -0700 | [diff] [blame] | 58 | #define NFSEXP_ALLFLAGS 0x3FEFF |
| Ben Cheng | 30692c6 | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 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 | #endif /* _UAPINFSD_EXPORT_H */ |