1 # SPDX-License-Identifier: GPL-2.0-only
3 tristate "NFS server support"
5 depends on FILE_LOCKING
9 select NFS_ACL_SUPPORT if NFSD_V2_ACL
12 Choose Y here if you want to allow other computers to access
13 files residing on this system using Sun's Network File System
14 protocol. To compile the NFS server support as a module,
15 choose M here: the module will be called nfsd.
17 You may choose to use a user-space NFS server instead, in which
18 case you can choose N here.
20 To export local file systems using NFS, you also need to install
21 user space programs which can be found in the Linux nfs-utils
22 package, available from http://linux-nfs.org/. More detail about
23 the Linux NFS server implementation is available via the
26 Below you can choose which versions of the NFS protocol are
27 available to clients mounting the NFS server on this system.
28 Support for NFS version 2 (RFC 1094) is always available when
29 CONFIG_NFSD is selected.
38 bool "NFS server support for NFS version 3"
41 This option enables support in your system's NFS server for
42 version 3 of the NFS protocol (RFC 1813).
47 bool "NFS server support for the NFSv3 ACL protocol extension"
51 Solaris NFS servers support an auxiliary NFSv3 ACL protocol that
52 never became an official part of the NFS version 3 protocol.
53 This protocol extension allows applications on NFS clients to
54 manipulate POSIX Access Control Lists on files residing on NFS
55 servers. NFS servers enforce POSIX ACLs on local files whether
56 this protocol is available or not.
58 This option enables support in your system's NFS server for the
59 NFSv3 ACL protocol extension allowing NFS clients to manipulate
60 POSIX ACLs on files exported by your system's NFS server. NFS
61 clients which support the Solaris NFSv3 ACL protocol can then
62 access and modify ACLs on your NFS server.
64 To store ACLs on your NFS server, you also need to enable ACL-
65 related CONFIG options for your local file systems of choice.
70 bool "NFS server support for NFS version 4"
71 depends on NFSD && PROC_FS
78 This option enables support in your system's NFS server for
79 version 4 of the NFS protocol (RFC 3530).
81 To export files using NFSv4, you need to install additional user
82 space programs which can be found in the Linux nfs-utils package,
83 available from http://linux-nfs.org/.
90 config NFSD_BLOCKLAYOUT
91 bool "NFSv4.1 server support for pNFS block layouts"
92 depends on NFSD_V4 && BLOCK
94 select EXPORTFS_BLOCK_OPS
96 This option enables support for the exporting pNFS block layouts
97 in the kernel's NFS server. The pNFS block layout enables NFS
98 clients to directly perform I/O to block devices accesible to both
99 the server and the clients. See RFC 5663 for more details.
103 config NFSD_SCSILAYOUT
104 bool "NFSv4.1 server support for pNFS SCSI layouts"
105 depends on NFSD_V4 && BLOCK
107 select EXPORTFS_BLOCK_OPS
108 select BLK_SCSI_REQUEST
110 This option enables support for the exporting pNFS SCSI layouts
111 in the kernel's NFS server. The pNFS SCSI layout enables NFS
112 clients to directly perform I/O to SCSI devices accesible to both
113 the server and the clients. See draft-ietf-nfsv4-scsi-layout for
118 config NFSD_FLEXFILELAYOUT
119 bool "NFSv4.1 server support for pNFS Flex File layouts"
123 This option enables support for the exporting pNFS Flex File
124 layouts in the kernel's NFS server. The pNFS Flex File layout
125 enables NFS clients to directly perform I/O to NFSv3 devices
126 accesible to both the server and the clients. See
127 draft-ietf-nfsv4-flex-files for more details.
129 Warning, this server implements the bare minimum functionality
130 to be a flex file server - it is for testing the client,
131 not for use in production.
135 config NFSD_V4_SECURITY_LABEL
136 bool "Provide Security Label support for NFSv4 server"
137 depends on NFSD_V4 && SECURITY
140 Say Y here if you want enable fine-grained security label attribute
141 support for NFS version 4. Security labels allow security modules like
142 SELinux and Smack to label files to facilitate enforcement of their policies.
143 Without this an NFSv4 mount will have the same label on each file.
145 If you do not wish to enable fine-grained security labels SELinux or
146 Smack policies on NFSv4 files, say N.
148 config NFSD_FAULT_INJECTION
149 bool "NFS server manual fault injection"
150 depends on NFSD_V4 && DEBUG_KERNEL && DEBUG_FS
152 This option enables support for manually injecting faults
153 into the NFS server. This is intended to be used for
154 testing error recovery on the NFS client.