16f52b16cSGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2616d1ca5SDavid Howells /* 3616d1ca5SDavid Howells * include/linux/nfsd/export.h 4616d1ca5SDavid Howells * 5616d1ca5SDavid Howells * Public declarations for NFS exports. The definitions for the 6616d1ca5SDavid Howells * syscall interface are in nfsctl.h 7616d1ca5SDavid Howells * 8616d1ca5SDavid Howells * Copyright (C) 1995-1997 Olaf Kirch <okir@monad.swb.de> 9616d1ca5SDavid Howells */ 10616d1ca5SDavid Howells 11616d1ca5SDavid Howells #ifndef _UAPINFSD_EXPORT_H 12616d1ca5SDavid Howells #define _UAPINFSD_EXPORT_H 13616d1ca5SDavid Howells 14616d1ca5SDavid Howells # include <linux/types.h> 15616d1ca5SDavid Howells 16616d1ca5SDavid Howells /* 17616d1ca5SDavid Howells * Important limits for the exports stuff. 18616d1ca5SDavid Howells */ 19616d1ca5SDavid Howells #define NFSCLNT_IDMAX 1024 20616d1ca5SDavid Howells #define NFSCLNT_ADDRMAX 16 21616d1ca5SDavid Howells #define NFSCLNT_KEYMAX 32 22616d1ca5SDavid Howells 23616d1ca5SDavid Howells /* 24616d1ca5SDavid Howells * Export flags. 259b3075c5SChristoph Hellwig * 269b3075c5SChristoph Hellwig * Please update the expflags[] array in fs/nfsd/export.c when adding 279b3075c5SChristoph Hellwig * a new flag. 28616d1ca5SDavid Howells */ 29616d1ca5SDavid Howells #define NFSEXP_READONLY 0x0001 30616d1ca5SDavid Howells #define NFSEXP_INSECURE_PORT 0x0002 31616d1ca5SDavid Howells #define NFSEXP_ROOTSQUASH 0x0004 32616d1ca5SDavid Howells #define NFSEXP_ALLSQUASH 0x0008 33616d1ca5SDavid Howells #define NFSEXP_ASYNC 0x0010 34616d1ca5SDavid Howells #define NFSEXP_GATHERED_WRITES 0x0020 3518c01ab3SRajesh Ghanekar #define NFSEXP_NOREADDIRPLUS 0x0040 3632ddd944SJ. Bruce Fields #define NFSEXP_SECURITY_LABEL 0x0080 3732ddd944SJ. Bruce Fields /* 0x100 currently unused */ 38616d1ca5SDavid Howells #define NFSEXP_NOHIDE 0x0200 39616d1ca5SDavid Howells #define NFSEXP_NOSUBTREECHECK 0x0400 40616d1ca5SDavid Howells #define NFSEXP_NOAUTHNLM 0x0800 /* Don't authenticate NLM requests - just trust */ 41616d1ca5SDavid Howells #define NFSEXP_MSNFS 0x1000 /* do silly things that MS clients expect; no longer supported */ 42616d1ca5SDavid Howells #define NFSEXP_FSID 0x2000 43616d1ca5SDavid Howells #define NFSEXP_CROSSMOUNT 0x4000 44616d1ca5SDavid Howells #define NFSEXP_NOACL 0x8000 /* reserved for possible ACL related use */ 45616d1ca5SDavid Howells /* 46616d1ca5SDavid Howells * The NFSEXP_V4ROOT flag causes the kernel to give access only to NFSv4 47616d1ca5SDavid Howells * clients, and only to the single directory that is the root of the 48616d1ca5SDavid Howells * export; further lookup and readdir operations are treated as if every 49616d1ca5SDavid Howells * subdirectory was a mountpoint, and ignored if they are not themselves 50616d1ca5SDavid Howells * exported. This is used by nfsd and mountd to construct the NFSv4 51616d1ca5SDavid Howells * pseudofilesystem, which provides access only to paths leading to each 52616d1ca5SDavid Howells * exported filesystem. 53616d1ca5SDavid Howells */ 54616d1ca5SDavid Howells #define NFSEXP_V4ROOT 0x10000 55f3f03330SChristoph Hellwig #define NFSEXP_PNFS 0x20000 569cf514ccSChristoph Hellwig 57616d1ca5SDavid Howells /* All flags that we claim to support. (Note we don't support NOACL.) */ 5832ddd944SJ. Bruce Fields #define NFSEXP_ALLFLAGS 0x3FEFF 59616d1ca5SDavid Howells 60616d1ca5SDavid Howells /* The flags that may vary depending on security flavor: */ 61616d1ca5SDavid Howells #define NFSEXP_SECINFO_FLAGS (NFSEXP_READONLY | NFSEXP_ROOTSQUASH \ 62616d1ca5SDavid Howells | NFSEXP_ALLSQUASH \ 63616d1ca5SDavid Howells | NFSEXP_INSECURE_PORT) 64616d1ca5SDavid Howells 65*9280c577SChuck Lever /* 66*9280c577SChuck Lever * Transport layer security policies that are permitted to access 67*9280c577SChuck Lever * an export 68*9280c577SChuck Lever */ 69*9280c577SChuck Lever #define NFSEXP_XPRTSEC_NONE 0x0001 70*9280c577SChuck Lever #define NFSEXP_XPRTSEC_TLS 0x0002 71*9280c577SChuck Lever #define NFSEXP_XPRTSEC_MTLS 0x0004 72*9280c577SChuck Lever 73*9280c577SChuck Lever #define NFSEXP_XPRTSEC_NUM (3) 74*9280c577SChuck Lever 75*9280c577SChuck Lever #define NFSEXP_XPRTSEC_ALL (NFSEXP_XPRTSEC_NONE | \ 76*9280c577SChuck Lever NFSEXP_XPRTSEC_TLS | \ 77*9280c577SChuck Lever NFSEXP_XPRTSEC_MTLS) 78616d1ca5SDavid Howells 79616d1ca5SDavid Howells #endif /* _UAPINFSD_EXPORT_H */ 80