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Thomas Gleixnerec8f24b2019-05-19 13:07:45 +01001# SPDX-License-Identifier: GPL-2.0-only
Alexey Dobriyane2b329e2009-01-22 11:08:58 +03002config NFSD
3 tristate "NFS server support"
4 depends on INET
Manish Katiyar68666562009-01-29 20:53:57 +05305 depends on FILE_LOCKING
Jeff Layton65294c12019-08-18 14:18:48 -04006 depends on FSNOTIFY
Alexey Dobriyane2b329e2009-01-22 11:08:58 +03007 select LOCKD
8 select SUNRPC
9 select EXPORTFS
10 select NFS_ACL_SUPPORT if NFSD_V2_ACL
Iulia Manda28138932015-04-15 16:16:41 -070011 depends on MULTIUSER
Alexey Dobriyane2b329e2009-01-22 11:08:58 +030012 help
13 Choose Y here if you want to allow other computers to access
14 files residing on this system using Sun's Network File System
15 protocol. To compile the NFS server support as a module,
16 choose M here: the module will be called nfsd.
17
18 You may choose to use a user-space NFS server instead, in which
19 case you can choose N here.
20
21 To export local file systems using NFS, you also need to install
22 user space programs which can be found in the Linux nfs-utils
23 package, available from http://linux-nfs.org/. More detail about
24 the Linux NFS server implementation is available via the
25 exports(5) man page.
26
27 Below you can choose which versions of the NFS protocol are
28 available to clients mounting the NFS server on this system.
29 Support for NFS version 2 (RFC 1094) is always available when
30 CONFIG_NFSD is selected.
31
32 If unsure, say N.
33
34config NFSD_V2_ACL
35 bool
36 depends on NFSD
37
38config NFSD_V3
39 bool "NFS server support for NFS version 3"
40 depends on NFSD
41 help
42 This option enables support in your system's NFS server for
43 version 3 of the NFS protocol (RFC 1813).
44
45 If unsure, say Y.
46
47config NFSD_V3_ACL
48 bool "NFS server support for the NFSv3 ACL protocol extension"
49 depends on NFSD_V3
50 select NFSD_V2_ACL
51 help
52 Solaris NFS servers support an auxiliary NFSv3 ACL protocol that
53 never became an official part of the NFS version 3 protocol.
54 This protocol extension allows applications on NFS clients to
55 manipulate POSIX Access Control Lists on files residing on NFS
56 servers. NFS servers enforce POSIX ACLs on local files whether
57 this protocol is available or not.
58
59 This option enables support in your system's NFS server for the
60 NFSv3 ACL protocol extension allowing NFS clients to manipulate
61 POSIX ACLs on files exported by your system's NFS server. NFS
62 clients which support the Solaris NFSv3 ACL protocol can then
63 access and modify ACLs on your NFS server.
64
65 To store ACLs on your NFS server, you also need to enable ACL-
66 related CONFIG options for your local file systems of choice.
67
68 If unsure, say N.
69
70config NFSD_V4
Kees Cookf987c902013-01-16 18:54:14 -080071 bool "NFS server support for NFS version 4"
72 depends on NFSD && PROC_FS
Alexey Dobriyane2b329e2009-01-22 11:08:58 +030073 select NFSD_V3
74 select FS_POSIX_ACL
Trond Myklebust827e3452010-09-12 19:57:50 -040075 select SUNRPC_GSS
Julian Braha70052272021-02-19 16:56:10 -050076 select CRYPTO
Patrick Steinhardt38a22042019-12-04 07:13:22 +010077 select CRYPTO_MD5
Scott Mayhewa2e2f2d2019-11-12 14:01:55 -050078 select CRYPTO_SHA256
Jeff Laytonf7790022014-09-12 16:40:20 -040079 select GRACE_PERIOD
Dai Ngo02591f92021-01-28 01:42:26 -050080 select NFS_V4_2_SSC_HELPER if NFS_V4_2
Alexey Dobriyane2b329e2009-01-22 11:08:58 +030081 help
82 This option enables support in your system's NFS server for
83 version 4 of the NFS protocol (RFC 3530).
84
85 To export files using NFSv4, you need to install additional user
86 space programs which can be found in the Linux nfs-utils package,
87 available from http://linux-nfs.org/.
88
89 If unsure, say N.
Bryan Schumaker65178db2011-11-01 13:35:21 -040090
Christoph Hellwig9cf514c2014-05-05 13:11:59 +020091config NFSD_PNFS
Christoph Hellwig81c39322016-03-04 20:46:16 +010092 bool
93
94config NFSD_BLOCKLAYOUT
95 bool "NFSv4.1 server support for pNFS block layouts"
Christoph Hellwig10c4de12016-03-09 15:43:27 +010096 depends on NFSD_V4 && BLOCK
Christoph Hellwig81c39322016-03-04 20:46:16 +010097 select NFSD_PNFS
Benjamin Coddington15d66ac2016-07-08 09:53:20 -040098 select EXPORTFS_BLOCK_OPS
Christoph Hellwig9cf514c2014-05-05 13:11:59 +020099 help
Christoph Hellwig81c39322016-03-04 20:46:16 +0100100 This option enables support for the exporting pNFS block layouts
101 in the kernel's NFS server. The pNFS block layout enables NFS
102 clients to directly perform I/O to block devices accesible to both
103 the server and the clients. See RFC 5663 for more details.
Christoph Hellwig9cf514c2014-05-05 13:11:59 +0200104
105 If unsure, say N.
106
Christoph Hellwigf99d4fb2016-03-04 20:46:17 +0100107config NFSD_SCSILAYOUT
108 bool "NFSv4.1 server support for pNFS SCSI layouts"
Christoph Hellwig10c4de12016-03-09 15:43:27 +0100109 depends on NFSD_V4 && BLOCK
Christoph Hellwigf99d4fb2016-03-04 20:46:17 +0100110 select NFSD_PNFS
Benjamin Coddington15d66ac2016-07-08 09:53:20 -0400111 select EXPORTFS_BLOCK_OPS
Christoph Hellwig72148ae2017-01-28 09:32:51 +0100112 select BLK_SCSI_REQUEST
Christoph Hellwigf99d4fb2016-03-04 20:46:17 +0100113 help
114 This option enables support for the exporting pNFS SCSI layouts
115 in the kernel's NFS server. The pNFS SCSI layout enables NFS
116 clients to directly perform I/O to SCSI devices accesible to both
117 the server and the clients. See draft-ietf-nfsv4-scsi-layout for
118 more details.
119
120 If unsure, say N.
121
Tom Haynes9b9960a2016-06-14 13:41:28 -0700122config NFSD_FLEXFILELAYOUT
123 bool "NFSv4.1 server support for pNFS Flex File layouts"
124 depends on NFSD_V4
125 select NFSD_PNFS
126 help
127 This option enables support for the exporting pNFS Flex File
128 layouts in the kernel's NFS server. The pNFS Flex File layout
129 enables NFS clients to directly perform I/O to NFSv3 devices
130 accesible to both the server and the clients. See
131 draft-ietf-nfsv4-flex-files for more details.
132
133 Warning, this server implements the bare minimum functionality
134 to be a flex file server - it is for testing the client,
135 not for use in production.
136
137 If unsure, say N.
138
Olga Kornievskaiab9e86382019-10-07 10:56:48 -0400139config NFSD_V4_2_INTER_SSC
140 bool "NFSv4.2 inter server to server COPY"
Dai Ngo0cfcd402020-10-18 23:42:49 -0400141 depends on NFSD_V4 && NFS_V4_1 && NFS_V4_2
Olga Kornievskaiab9e86382019-10-07 10:56:48 -0400142 help
143 This option enables support for NFSv4.2 inter server to
144 server copy where the destination server calls the NFSv4.2
145 client to read the data to copy from the source server.
146
147 If unsure, say N.
148
David Quigley18032ca2013-05-02 13:19:10 -0400149config NFSD_V4_SECURITY_LABEL
150 bool "Provide Security Label support for NFSv4 server"
151 depends on NFSD_V4 && SECURITY
152 help
153
154 Say Y here if you want enable fine-grained security label attribute
155 support for NFS version 4. Security labels allow security modules like
156 SELinux and Smack to label files to facilitate enforcement of their policies.
157 Without this an NFSv4 mount will have the same label on each file.
158
159 If you do not wish to enable fine-grained security labels SELinux or
160 Smack policies on NFSv4 files, say N.