| 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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| 2 | /* |
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| 3 | * include/linux/nfsd/export.h |
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| 4 | * |
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| 5 | * Public declarations for NFS exports. The definitions for the |
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| 6 | * syscall interface are in nfsctl.h |
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| 7 | * |
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| 8 | * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de> |
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| 9 | */ |
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| 10 | |
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| 11 | #ifndef _UAPINFSD_EXPORT_H |
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| 12 | #define _UAPINFSD_EXPORT_H |
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| 13 | |
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| 14 | # include <linux/types.h> |
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| 15 | |
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| 16 | /* |
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| 17 | * Important limits for the exports stuff. |
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| 18 | */ |
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| 19 | #define NFSCLNT_IDMAX 1024 |
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| 20 | #define NFSCLNT_ADDRMAX 16 |
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| 21 | #define NFSCLNT_KEYMAX 32 |
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| 22 | |
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| 23 | /* |
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| 24 | * Export flags. |
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| 25 | * |
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| 26 | * Please update the expflags[] array in fs/nfsd/export.c when adding |
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| 27 | * a new flag. |
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| 28 | */ |
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| 29 | #define NFSEXP_READONLY 0x0001 |
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| 30 | #define NFSEXP_INSECURE_PORT 0x0002 |
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| 31 | #define NFSEXP_ROOTSQUASH 0x0004 |
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| 32 | #define NFSEXP_ALLSQUASH 0x0008 |
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| 33 | #define NFSEXP_ASYNC 0x0010 |
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| 34 | #define NFSEXP_GATHERED_WRITES 0x0020 |
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| 35 | #define NFSEXP_NOREADDIRPLUS 0x0040 |
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| 36 | #define NFSEXP_SECURITY_LABEL 0x0080 |
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| 37 | /* 0x100 currently unused */ |
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| 38 | #define NFSEXP_NOHIDE 0x0200 |
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| 39 | #define NFSEXP_NOSUBTREECHECK 0x0400 |
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| 40 | #define NFSEXP_NOAUTHNLM 0x0800 /* Don't authenticate NLM requests - just trust */ |
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| 41 | #define NFSEXP_MSNFS 0x1000 /* do silly things that MS clients expect; no longer supported */ |
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| 42 | #define NFSEXP_FSID 0x2000 |
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| 43 | #define NFSEXP_CROSSMOUNT 0x4000 |
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| 44 | #define NFSEXP_NOACL 0x8000 /* reserved for possible ACL related use */ |
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| 45 | /* |
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| 46 | * The NFSEXP_V4ROOT flag causes the kernel to give access only to NFSv4 |
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| 47 | * clients, and only to the single directory that is the root of the |
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| 48 | * export; further lookup and readdir operations are treated as if every |
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| 49 | * subdirectory was a mountpoint, and ignored if they are not themselves |
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| 50 | * exported. This is used by nfsd and mountd to construct the NFSv4 |
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| 51 | * pseudofilesystem, which provides access only to paths leading to each |
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| 52 | * exported filesystem. |
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| 53 | */ |
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| 54 | #define NFSEXP_V4ROOT 0x10000 |
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| 55 | #define NFSEXP_PNFS 0x20000 |
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| 56 | |
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| 57 | /* All flags that we claim to support. (Note we don't support NOACL.) */ |
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| 58 | #define NFSEXP_ALLFLAGS 0x3FEFF |
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| 59 | |
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| 60 | /* The flags that may vary depending on security flavor: */ |
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| 61 | #define NFSEXP_SECINFO_FLAGS (NFSEXP_READONLY | NFSEXP_ROOTSQUASH \ |
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| 62 | | NFSEXP_ALLSQUASH \ |
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| 63 | | NFSEXP_INSECURE_PORT) |
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| 64 | |
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| 65 | /* |
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| 66 | * Transport layer security policies that are permitted to access |
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| 67 | * an export |
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| 68 | */ |
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| 69 | #define NFSEXP_XPRTSEC_NONE 0x0001 |
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| 70 | #define NFSEXP_XPRTSEC_TLS 0x0002 |
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| 71 | #define NFSEXP_XPRTSEC_MTLS 0x0004 |
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| 72 | |
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| 73 | #define NFSEXP_XPRTSEC_NUM (3) |
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| 74 | |
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| 75 | #define NFSEXP_XPRTSEC_ALL (NFSEXP_XPRTSEC_NONE | \ |
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| 76 | NFSEXP_XPRTSEC_TLS | \ |
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| 77 | NFSEXP_XPRTSEC_MTLS) |
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| 78 | |
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| 79 | #endif /* _UAPINFSD_EXPORT_H */ |
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| 80 | |
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