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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 select NFS_ACL_SUPPORT if NFSD_V3_ACL
12 depends on MULTIUSER
13 help
14 Choose Y here if you want to allow other computers to access
15 files residing on this system using Sun's Network File System
16 protocol. To compile the NFS server support as a module,
17 choose M here: the module will be called nfsd.
18
19 You may choose to use a user-space NFS server instead, in which
20 case you can choose N here.
21
22 To export local file systems using NFS, you also need to install
23 user space programs which can be found in the Linux nfs-utils
24 package, available from http://linux-nfs.org/. More detail about
25 the Linux NFS server implementation is available via the
26 exports(5) man page.
27
28 Below you can choose which versions of the NFS protocol are
29 available to clients mounting the NFS server on this system.
30 Support for NFS version 3 (RFC 1813) is always available when
31 CONFIG_NFSD is selected.
32
33 If unsure, say N.
34
35config NFSD_V2
36 bool "NFS server support for NFS version 2 (DEPRECATED)"
37 depends on NFSD
38 default n
39 help
40 NFSv2 (RFC 1094) was the first publicly-released version of NFS.
41 Unless you are hosting ancient (1990's era) NFS clients, you don't
42 need this.
43
44 If unsure, say N.
45
46config NFSD_V2_ACL
47 bool "NFS server support for the NFSv2 ACL protocol extension"
48 depends on NFSD_V2
49
50config NFSD_V3_ACL
51 bool "NFS server support for the NFSv3 ACL protocol extension"
52 depends on NFSD
53 help
54 Solaris NFS servers support an auxiliary NFSv3 ACL protocol that
55 never became an official part of the NFS version 3 protocol.
56 This protocol extension allows applications on NFS clients to
57 manipulate POSIX Access Control Lists on files residing on NFS
58 servers. NFS servers enforce POSIX ACLs on local files whether
59 this protocol is available or not.
60
61 This option enables support in your system's NFS server for the
62 NFSv3 ACL protocol extension allowing NFS clients to manipulate
63 POSIX ACLs on files exported by your system's NFS server. NFS
64 clients which support the Solaris NFSv3 ACL protocol can then
65 access and modify ACLs on your NFS server.
66
67 To store ACLs on your NFS server, you also need to enable ACL-
68 related CONFIG options for your local file systems of choice.
69
70 If unsure, say N.
71
72config NFSD_V4
73 bool "NFS server support for NFS version 4"
74 depends on NFSD && PROC_FS
75 select FS_POSIX_ACL
76 select SUNRPC_GSS
77 select CRYPTO
78 select CRYPTO_MD5
79 select CRYPTO_SHA256
80 select GRACE_PERIOD
81 select NFS_V4_2_SSC_HELPER if NFS_V4_2
82 help
83 This option enables support in your system's NFS server for
84 version 4 of the NFS protocol (RFC 3530).
85
86 To export files using NFSv4, you need to install additional user
87 space programs which can be found in the Linux nfs-utils package,
88 available from http://linux-nfs.org/.
89
90 If unsure, say N.
91
92config NFSD_PNFS
93 bool
94
95config NFSD_BLOCKLAYOUT
96 bool "NFSv4.1 server support for pNFS block layouts"
97 depends on NFSD_V4 && BLOCK
98 select NFSD_PNFS
99 select EXPORTFS_BLOCK_OPS
100 help
101 This option enables support for the exporting pNFS block layouts
102 in the kernel's NFS server. The pNFS block layout enables NFS
103 clients to directly perform I/O to block devices accessible to both
104 the server and the clients. See RFC 5663 for more details.
105
106 If unsure, say N.
107
108config NFSD_SCSILAYOUT
109 bool "NFSv4.1 server support for pNFS SCSI layouts"
110 depends on NFSD_V4 && BLOCK
111 select NFSD_PNFS
112 select EXPORTFS_BLOCK_OPS
113 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 accessible 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
122config 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 accessible 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
139config NFSD_V4_2_INTER_SSC
140 bool "NFSv4.2 inter server to server COPY"
141 depends on NFSD_V4 && NFS_V4_2
142 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
149config 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.
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 select NFS_ACL_SUPPORT if NFSD_V3_ACL
12 depends on MULTIUSER
13 help
14 Choose Y here if you want to allow other computers to access
15 files residing on this system using Sun's Network File System
16 protocol. To compile the NFS server support as a module,
17 choose M here: the module will be called nfsd.
18
19 You may choose to use a user-space NFS server instead, in which
20 case you can choose N here.
21
22 To export local file systems using NFS, you also need to install
23 user space programs which can be found in the Linux nfs-utils
24 package, available from http://linux-nfs.org/. More detail about
25 the Linux NFS server implementation is available via the
26 exports(5) man page.
27
28 Below you can choose which versions of the NFS protocol are
29 available to clients mounting the NFS server on this system.
30 Support for NFS version 3 (RFC 1813) is always available when
31 CONFIG_NFSD is selected.
32
33 If unsure, say N.
34
35config NFSD_V2
36 bool "NFS server support for NFS version 2 (DEPRECATED)"
37 depends on NFSD
38 default n
39 help
40 NFSv2 (RFC 1094) was the first publicly-released version of NFS.
41 Unless you are hosting ancient (1990's era) NFS clients, you don't
42 need this.
43
44 If unsure, say N.
45
46config NFSD_V2_ACL
47 bool "NFS server support for the NFSv2 ACL protocol extension"
48 depends on NFSD_V2
49
50config NFSD_V3_ACL
51 bool "NFS server support for the NFSv3 ACL protocol extension"
52 depends on NFSD
53 help
54 Solaris NFS servers support an auxiliary NFSv3 ACL protocol that
55 never became an official part of the NFS version 3 protocol.
56 This protocol extension allows applications on NFS clients to
57 manipulate POSIX Access Control Lists on files residing on NFS
58 servers. NFS servers enforce POSIX ACLs on local files whether
59 this protocol is available or not.
60
61 This option enables support in your system's NFS server for the
62 NFSv3 ACL protocol extension allowing NFS clients to manipulate
63 POSIX ACLs on files exported by your system's NFS server. NFS
64 clients which support the Solaris NFSv3 ACL protocol can then
65 access and modify ACLs on your NFS server.
66
67 To store ACLs on your NFS server, you also need to enable ACL-
68 related CONFIG options for your local file systems of choice.
69
70 If unsure, say N.
71
72config NFSD_V4
73 bool "NFS server support for NFS version 4"
74 depends on NFSD && PROC_FS
75 select FS_POSIX_ACL
76 select RPCSEC_GSS_KRB5
77 select CRYPTO
78 select CRYPTO_MD5
79 select CRYPTO_SHA256
80 select GRACE_PERIOD
81 select NFS_V4_2_SSC_HELPER if NFS_V4_2
82 help
83 This option enables support in your system's NFS server for
84 version 4 of the NFS protocol (RFC 3530).
85
86 To export files using NFSv4, you need to install additional user
87 space programs which can be found in the Linux nfs-utils package,
88 available from http://linux-nfs.org/.
89
90 If unsure, say N.
91
92config NFSD_PNFS
93 bool
94
95config NFSD_BLOCKLAYOUT
96 bool "NFSv4.1 server support for pNFS block layouts"
97 depends on NFSD_V4 && BLOCK
98 select NFSD_PNFS
99 select EXPORTFS_BLOCK_OPS
100 help
101 This option enables support for the exporting pNFS block layouts
102 in the kernel's NFS server. The pNFS block layout enables NFS
103 clients to directly perform I/O to block devices accessible to both
104 the server and the clients. See RFC 5663 for more details.
105
106 If unsure, say N.
107
108config NFSD_SCSILAYOUT
109 bool "NFSv4.1 server support for pNFS SCSI layouts"
110 depends on NFSD_V4 && BLOCK
111 select NFSD_PNFS
112 select EXPORTFS_BLOCK_OPS
113 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 accessible 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
122config 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 accessible 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
139config NFSD_V4_2_INTER_SSC
140 bool "NFSv4.2 inter server to server COPY"
141 depends on NFSD_V4 && NFS_V4_2
142 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
149config 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.
161
162config NFSD_LEGACY_CLIENT_TRACKING
163 bool "Support legacy NFSv4 client tracking methods (DEPRECATED)"
164 depends on NFSD_V4
165 default n
166 help
167 The NFSv4 server needs to store a small amount of information on
168 stable storage in order to handle state recovery after reboot. Most
169 modern deployments upcall to a userland daemon for this (nfsdcld),
170 but older NFS servers may store information directly in a
171 recoverydir, or spawn a process directly using a usermodehelper
172 upcall.
173
174 These legacy client tracking methods have proven to be probelmatic
175 and will be removed in the future. Say Y here if you need support
176 for them in the interim.