1 # SPDX-License-Identifier: GPL-2.0-only
2 config NFSD
3 tristate "NFS server support"
4 depends on INET
5 depends on FILE_LOCKING
6 depends on FSNOTIFY
7 select LOCKD
8 select SUNRPC
9 select EXPORTFS
10 select NFS_COMMON
11 select NFS_ACL_SUPPORT if NFSD_V2_ACL
12 select NFS_ACL_SUPPORT if NFSD_V3_ACL
13 depends on MULTIUSER
14 help
15 Choose Y here if you want to allow o
16 files residing on this system using
17 protocol. To compile the NFS server
18 choose M here: the module will be ca
19
20 You may choose to use a user-space N
21 case you can choose N here.
22
23 To export local file systems using N
24 user space programs which can be fou
25 package, available from http://linux
26 the Linux NFS server implementation
27 exports(5) man page.
28
29 Below you can choose which versions
30 available to clients mounting the NF
31 Support for NFS version 3 (RFC 1813)
32 CONFIG_NFSD is selected.
33
34 If unsure, say N.
35
36 config NFSD_V2
37 bool "NFS server support for NFS versi
38 depends on NFSD
39 default n
40 help
41 NFSv2 (RFC 1094) was the first publi
42 Unless you are hosting ancient (1990
43 need this.
44
45 If unsure, say N.
46
47 config NFSD_V2_ACL
48 bool "NFS server support for the NFSv2
49 depends on NFSD_V2
50
51 config NFSD_V3_ACL
52 bool "NFS server support for the NFSv3
53 depends on NFSD
54 help
55 Solaris NFS servers support an auxil
56 never became an official part of the
57 This protocol extension allows appli
58 manipulate POSIX Access Control List
59 servers. NFS servers enforce POSIX
60 this protocol is available or not.
61
62 This option enables support in your
63 NFSv3 ACL protocol extension allowin
64 POSIX ACLs on files exported by your
65 clients which support the Solaris NF
66 access and modify ACLs on your NFS s
67
68 To store ACLs on your NFS server, yo
69 related CONFIG options for your loca
70
71 If unsure, say N.
72
73 config NFSD_V4
74 bool "NFS server support for NFS versi
75 depends on NFSD && PROC_FS
76 select FS_POSIX_ACL
77 select RPCSEC_GSS_KRB5
78 select CRYPTO
79 select CRYPTO_MD5
80 select CRYPTO_SHA256
81 select GRACE_PERIOD
82 select NFS_V4_2_SSC_HELPER if NFS_V4_2
83 help
84 This option enables support in your
85 version 4 of the NFS protocol (RFC 3
86
87 To export files using NFSv4, you nee
88 space programs which can be found in
89 available from http://linux-nfs.org/
90
91 If unsure, say N.
92
93 config NFSD_PNFS
94 bool
95
96 config NFSD_BLOCKLAYOUT
97 bool "NFSv4.1 server support for pNFS
98 depends on NFSD_V4 && BLOCK
99 select NFSD_PNFS
100 select EXPORTFS_BLOCK_OPS
101 help
102 This option enables support for the
103 in the kernel's NFS server. The pNFS
104 clients to directly perform I/O to b
105 the server and the clients. See RFC
106
107 If unsure, say N.
108
109 config NFSD_SCSILAYOUT
110 bool "NFSv4.1 server support for pNFS
111 depends on NFSD_V4 && BLOCK
112 select NFSD_PNFS
113 select EXPORTFS_BLOCK_OPS
114 help
115 This option enables support for the
116 in the kernel's NFS server. The pNFS
117 clients to directly perform I/O to S
118 the server and the clients. See dra
119 more details.
120
121 If unsure, say N.
122
123 config NFSD_FLEXFILELAYOUT
124 bool "NFSv4.1 server support for pNFS
125 depends on NFSD_V4
126 select NFSD_PNFS
127 help
128 This option enables support for the
129 layouts in the kernel's NFS server.
130 enables NFS clients to directly perf
131 accessible to both the server and th
132 draft-ietf-nfsv4-flex-files for more
133
134 Warning, this server implements the
135 to be a flex file server - it is for
136 not for use in production.
137
138 If unsure, say N.
139
140 config NFSD_V4_2_INTER_SSC
141 bool "NFSv4.2 inter server to server C
142 depends on NFSD_V4 && NFS_V4_2
143 help
144 This option enables support for NFSv
145 server copy where the destination se
146 client to read the data to copy from
147
148 If unsure, say N.
149
150 config NFSD_V4_SECURITY_LABEL
151 bool "Provide Security Label support f
152 depends on NFSD_V4 && SECURITY
153 help
154
155 Say Y here if you want enable fine-gra
156 support for NFS version 4. Security l
157 SELinux and Smack to label files to fa
158 Without this an NFSv4 mount will have
159
160 If you do not wish to enable fine-grai
161 Smack policies on NFSv4 files, say N.
162
163 config NFSD_LEGACY_CLIENT_TRACKING
164 bool "Support legacy NFSv4 client trac
165 depends on NFSD_V4
166 default y
167 help
168 The NFSv4 server needs to store a sm
169 stable storage in order to handle st
170 modern deployments upcall to a userl
171 but older NFS servers may store info
172 recoverydir, or spawn a process dire
173 upcall.
174
175 These legacy client tracking methods
176 and will be removed in the future. S
177 for them in the interim.
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