xref: /openbmc/linux/fs/nfsd/Kconfig (revision 27498967)
1# SPDX-License-Identifier: GPL-2.0-only
2config 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_ACL_SUPPORT if NFSD_V2_ACL
11	depends on MULTIUSER
12	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_ACL
39	bool "NFS server support for the NFSv3 ACL protocol extension"
40	depends on NFSD
41	select NFSD_V2_ACL
42	help
43	  Solaris NFS servers support an auxiliary NFSv3 ACL protocol that
44	  never became an official part of the NFS version 3 protocol.
45	  This protocol extension allows applications on NFS clients to
46	  manipulate POSIX Access Control Lists on files residing on NFS
47	  servers.  NFS servers enforce POSIX ACLs on local files whether
48	  this protocol is available or not.
49
50	  This option enables support in your system's NFS server for the
51	  NFSv3 ACL protocol extension allowing NFS clients to manipulate
52	  POSIX ACLs on files exported by your system's NFS server.  NFS
53	  clients which support the Solaris NFSv3 ACL protocol can then
54	  access and modify ACLs on your NFS server.
55
56	  To store ACLs on your NFS server, you also need to enable ACL-
57	  related CONFIG options for your local file systems of choice.
58
59	  If unsure, say N.
60
61config NFSD_V4
62	bool "NFS server support for NFS version 4"
63	depends on NFSD && PROC_FS
64	select FS_POSIX_ACL
65	select SUNRPC_GSS
66	select CRYPTO
67	select CRYPTO_MD5
68	select CRYPTO_SHA256
69	select GRACE_PERIOD
70	select NFS_V4_2_SSC_HELPER if NFS_V4_2
71	help
72	  This option enables support in your system's NFS server for
73	  version 4 of the NFS protocol (RFC 3530).
74
75	  To export files using NFSv4, you need to install additional user
76	  space programs which can be found in the Linux nfs-utils package,
77	  available from http://linux-nfs.org/.
78
79	  If unsure, say N.
80
81config NFSD_PNFS
82	bool
83
84config NFSD_BLOCKLAYOUT
85	bool "NFSv4.1 server support for pNFS block layouts"
86	depends on NFSD_V4 && BLOCK
87	select NFSD_PNFS
88	select EXPORTFS_BLOCK_OPS
89	help
90	  This option enables support for the exporting pNFS block layouts
91	  in the kernel's NFS server. The pNFS block layout enables NFS
92	  clients to directly perform I/O to block devices accessible to both
93	  the server and the clients.  See RFC 5663 for more details.
94
95	  If unsure, say N.
96
97config NFSD_SCSILAYOUT
98	bool "NFSv4.1 server support for pNFS SCSI layouts"
99	depends on NFSD_V4 && BLOCK
100	select NFSD_PNFS
101	select EXPORTFS_BLOCK_OPS
102	help
103	  This option enables support for the exporting pNFS SCSI layouts
104	  in the kernel's NFS server. The pNFS SCSI layout enables NFS
105	  clients to directly perform I/O to SCSI devices accessible to both
106	  the server and the clients.  See draft-ietf-nfsv4-scsi-layout for
107	  more details.
108
109	  If unsure, say N.
110
111config NFSD_FLEXFILELAYOUT
112	bool "NFSv4.1 server support for pNFS Flex File layouts"
113	depends on NFSD_V4
114	select NFSD_PNFS
115	help
116	  This option enables support for the exporting pNFS Flex File
117	  layouts in the kernel's NFS server. The pNFS Flex File  layout
118	  enables NFS clients to directly perform I/O to NFSv3 devices
119	  accessible to both the server and the clients.  See
120	  draft-ietf-nfsv4-flex-files for more details.
121
122	  Warning, this server implements the bare minimum functionality
123	  to be a flex file server - it is for testing the client,
124	  not for use in production.
125
126	  If unsure, say N.
127
128config NFSD_V4_2_INTER_SSC
129	bool "NFSv4.2 inter server to server COPY"
130	depends on NFSD_V4 && NFS_V4_2
131	help
132	  This option enables support for NFSv4.2 inter server to
133	  server copy where the destination server calls the NFSv4.2
134	  client to read the data to copy from the source server.
135
136	  If unsure, say N.
137
138config NFSD_V4_SECURITY_LABEL
139	bool "Provide Security Label support for NFSv4 server"
140	depends on NFSD_V4 && SECURITY
141	help
142
143	Say Y here if you want enable fine-grained security label attribute
144	support for NFS version 4.  Security labels allow security modules like
145	SELinux and Smack to label files to facilitate enforcement of their policies.
146	Without this an NFSv4 mount will have the same label on each file.
147
148	If you do not wish to enable fine-grained security labels SELinux or
149	Smack policies on NFSv4 files, say N.
150