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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_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 other computers to access
16 files residing on this system using Sun's Network File System
17 protocol. To compile the NFS server support as a module,
18 choose M here: the module will be called nfsd.
19
20 You may choose to use a user-space NFS server instead, in which
21 case you can choose N here.
22
23 To export local file systems using NFS, you also need to install
24 user space programs which can be found in the Linux nfs-utils
25 package, available from http://linux-nfs.org/. More detail about
26 the Linux NFS server implementation is available via the
27 exports(5) man page.
28
29 Below you can choose which versions of the NFS protocol are
30 available to clients mounting the NFS server on this system.
31 Support for NFS version 3 (RFC 1813) is always available when
32 CONFIG_NFSD is selected.
33
34 If unsure, say N.
35
36config NFSD_V2
37 bool "NFS server support for NFS version 2 (DEPRECATED)"
38 depends on NFSD
39 default n
40 help
41 NFSv2 (RFC 1094) was the first publicly-released version of NFS.
42 Unless you are hosting ancient (1990's era) NFS clients, you don't
43 need this.
44
45 If unsure, say N.
46
47config NFSD_V2_ACL
48 bool "NFS server support for the NFSv2 ACL protocol extension"
49 depends on NFSD_V2
50
51config NFSD_V3_ACL
52 bool "NFS server support for the NFSv3 ACL protocol extension"
53 depends on NFSD
54 help
55 Solaris NFS servers support an auxiliary NFSv3 ACL protocol that
56 never became an official part of the NFS version 3 protocol.
57 This protocol extension allows applications on NFS clients to
58 manipulate POSIX Access Control Lists on files residing on NFS
59 servers. NFS servers enforce POSIX ACLs on local files whether
60 this protocol is available or not.
61
62 This option enables support in your system's NFS server for the
63 NFSv3 ACL protocol extension allowing NFS clients to manipulate
64 POSIX ACLs on files exported by your system's NFS server. NFS
65 clients which support the Solaris NFSv3 ACL protocol can then
66 access and modify ACLs on your NFS server.
67
68 To store ACLs on your NFS server, you also need to enable ACL-
69 related CONFIG options for your local file systems of choice.
70
71 If unsure, say N.
72
73config NFSD_V4
74 bool "NFS server support for NFS version 4"
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 system's NFS server for
85 version 4 of the NFS protocol (RFC 3530).
86
87 To export files using NFSv4, you need to install additional user
88 space programs which can be found in the Linux nfs-utils package,
89 available from http://linux-nfs.org/.
90
91 If unsure, say N.
92
93config NFSD_PNFS
94 bool
95
96config NFSD_BLOCKLAYOUT
97 bool "NFSv4.1 server support for pNFS block layouts"
98 depends on NFSD_V4 && BLOCK
99 select NFSD_PNFS
100 select EXPORTFS_BLOCK_OPS
101 help
102 This option enables support for the exporting pNFS block layouts
103 in the kernel's NFS server. The pNFS block layout enables NFS
104 clients to directly perform I/O to block devices accessible to both
105 the server and the clients. See RFC 5663 for more details.
106
107 If unsure, say N.
108
109config NFSD_SCSILAYOUT
110 bool "NFSv4.1 server support for pNFS SCSI layouts"
111 depends on NFSD_V4 && BLOCK
112 select NFSD_PNFS
113 select EXPORTFS_BLOCK_OPS
114 help
115 This option enables support for the exporting pNFS SCSI layouts
116 in the kernel's NFS server. The pNFS SCSI layout enables NFS
117 clients to directly perform I/O to SCSI devices accessible to both
118 the server and the clients. See draft-ietf-nfsv4-scsi-layout for
119 more details.
120
121 If unsure, say N.
122
123config NFSD_FLEXFILELAYOUT
124 bool "NFSv4.1 server support for pNFS Flex File layouts"
125 depends on NFSD_V4
126 select NFSD_PNFS
127 help
128 This option enables support for the exporting pNFS Flex File
129 layouts in the kernel's NFS server. The pNFS Flex File layout
130 enables NFS clients to directly perform I/O to NFSv3 devices
131 accessible to both the server and the clients. See
132 draft-ietf-nfsv4-flex-files for more details.
133
134 Warning, this server implements the bare minimum functionality
135 to be a flex file server - it is for testing the client,
136 not for use in production.
137
138 If unsure, say N.
139
140config NFSD_V4_2_INTER_SSC
141 bool "NFSv4.2 inter server to server COPY"
142 depends on NFSD_V4 && NFS_V4_2
143 help
144 This option enables support for NFSv4.2 inter server to
145 server copy where the destination server calls the NFSv4.2
146 client to read the data to copy from the source server.
147
148 If unsure, say N.
149
150config NFSD_V4_SECURITY_LABEL
151 bool "Provide Security Label support for NFSv4 server"
152 depends on NFSD_V4 && SECURITY
153 help
154
155 Say Y here if you want enable fine-grained security label attribute
156 support for NFS version 4. Security labels allow security modules like
157 SELinux and Smack to label files to facilitate enforcement of their policies.
158 Without this an NFSv4 mount will have the same label on each file.
159
160 If you do not wish to enable fine-grained security labels SELinux or
161 Smack policies on NFSv4 files, say N.
162
163config NFSD_LEGACY_CLIENT_TRACKING
164 bool "Support legacy NFSv4 client tracking methods (DEPRECATED)"
165 depends on NFSD_V4
166 default y
167 help
168 The NFSv4 server needs to store a small amount of information on
169 stable storage in order to handle state recovery after reboot. Most
170 modern deployments upcall to a userland daemon for this (nfsdcld),
171 but older NFS servers may store information directly in a
172 recoverydir, or spawn a process directly using a usermodehelper
173 upcall.
174
175 These legacy client tracking methods have proven to be probelmatic
176 and will be removed in the future. Say Y here if you need support
177 for them in the interim.