1 # SPDX-License-Identifier: GPL-2.0-only
3 tristate "NFS server support"
5 depends on FILE_LOCKING
10 select NFS_ACL_SUPPORT if NFSD_V2_ACL
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.
18 You may choose to use a user-space NFS server instead, in which
19 case you can choose N here.
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
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.
39 bool "NFS server support for NFS version 3"
42 This option enables support in your system's NFS server for
43 version 3 of the NFS protocol (RFC 1813).
48 bool "NFS server support for the NFSv3 ACL protocol extension"
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.
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.
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.
71 bool "NFS server support for NFS version 4"
72 depends on NFSD && PROC_FS
80 This option enables support in your system's NFS server for
81 version 4 of the NFS protocol (RFC 3530).
83 To export files using NFSv4, you need to install additional user
84 space programs which can be found in the Linux nfs-utils package,
85 available from http://linux-nfs.org/.
92 config NFSD_BLOCKLAYOUT
93 bool "NFSv4.1 server support for pNFS block layouts"
94 depends on NFSD_V4 && BLOCK
96 select EXPORTFS_BLOCK_OPS
98 This option enables support for the exporting pNFS block layouts
99 in the kernel's NFS server. The pNFS block layout enables NFS
100 clients to directly perform I/O to block devices accesible to both
101 the server and the clients. See RFC 5663 for more details.
105 config NFSD_SCSILAYOUT
106 bool "NFSv4.1 server support for pNFS SCSI layouts"
107 depends on NFSD_V4 && BLOCK
109 select EXPORTFS_BLOCK_OPS
110 select BLK_SCSI_REQUEST
112 This option enables support for the exporting pNFS SCSI layouts
113 in the kernel's NFS server. The pNFS SCSI layout enables NFS
114 clients to directly perform I/O to SCSI devices accesible to both
115 the server and the clients. See draft-ietf-nfsv4-scsi-layout for
120 config NFSD_FLEXFILELAYOUT
121 bool "NFSv4.1 server support for pNFS Flex File layouts"
125 This option enables support for the exporting pNFS Flex File
126 layouts in the kernel's NFS server. The pNFS Flex File layout
127 enables NFS clients to directly perform I/O to NFSv3 devices
128 accesible to both the server and the clients. See
129 draft-ietf-nfsv4-flex-files for more details.
131 Warning, this server implements the bare minimum functionality
132 to be a flex file server - it is for testing the client,
133 not for use in production.
137 config NFSD_V4_2_INTER_SSC
138 bool "NFSv4.2 inter server to server COPY"
139 depends on NFSD_V4 && NFS_V4_1 && NFS_V4_2 && NFS_FS=y
141 This option enables support for NFSv4.2 inter server to
142 server copy where the destination server calls the NFSv4.2
143 client to read the data to copy from the source server.
147 config NFSD_V4_SECURITY_LABEL
148 bool "Provide Security Label support for NFSv4 server"
149 depends on NFSD_V4 && SECURITY
152 Say Y here if you want enable fine-grained security label attribute
153 support for NFS version 4. Security labels allow security modules like
154 SELinux and Smack to label files to facilitate enforcement of their policies.
155 Without this an NFSv4 mount will have the same label on each file.
157 If you do not wish to enable fine-grained security labels SELinux or
158 Smack policies on NFSv4 files, say N.
160 config NFSD_FAULT_INJECTION
161 bool "NFS server manual fault injection"
162 depends on NFSD_V4 && DEBUG_KERNEL && DEBUG_FS && BROKEN
164 This option enables support for manually injecting faults
165 into the NFS server. This is intended to be used for
166 testing error recovery on the NFS client.