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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.
1config NFSD
2 tristate "NFS server support"
3 depends on INET
4 depends on FILE_LOCKING
5 select LOCKD
6 select SUNRPC
7 select EXPORTFS
8 select NFS_ACL_SUPPORT if NFSD_V2_ACL
9 depends on MULTIUSER
10 help
11 Choose Y here if you want to allow other computers to access
12 files residing on this system using Sun's Network File System
13 protocol. To compile the NFS server support as a module,
14 choose M here: the module will be called nfsd.
15
16 You may choose to use a user-space NFS server instead, in which
17 case you can choose N here.
18
19 To export local file systems using NFS, you also need to install
20 user space programs which can be found in the Linux nfs-utils
21 package, available from http://linux-nfs.org/. More detail about
22 the Linux NFS server implementation is available via the
23 exports(5) man page.
24
25 Below you can choose which versions of the NFS protocol are
26 available to clients mounting the NFS server on this system.
27 Support for NFS version 2 (RFC 1094) is always available when
28 CONFIG_NFSD is selected.
29
30 If unsure, say N.
31
32config NFSD_V2_ACL
33 bool
34 depends on NFSD
35
36config NFSD_V3
37 bool "NFS server support for NFS version 3"
38 depends on NFSD
39 help
40 This option enables support in your system's NFS server for
41 version 3 of the NFS protocol (RFC 1813).
42
43 If unsure, say Y.
44
45config NFSD_V3_ACL
46 bool "NFS server support for the NFSv3 ACL protocol extension"
47 depends on NFSD_V3
48 select NFSD_V2_ACL
49 help
50 Solaris NFS servers support an auxiliary NFSv3 ACL protocol that
51 never became an official part of the NFS version 3 protocol.
52 This protocol extension allows applications on NFS clients to
53 manipulate POSIX Access Control Lists on files residing on NFS
54 servers. NFS servers enforce POSIX ACLs on local files whether
55 this protocol is available or not.
56
57 This option enables support in your system's NFS server for the
58 NFSv3 ACL protocol extension allowing NFS clients to manipulate
59 POSIX ACLs on files exported by your system's NFS server. NFS
60 clients which support the Solaris NFSv3 ACL protocol can then
61 access and modify ACLs on your NFS server.
62
63 To store ACLs on your NFS server, you also need to enable ACL-
64 related CONFIG options for your local file systems of choice.
65
66 If unsure, say N.
67
68config NFSD_V4
69 bool "NFS server support for NFS version 4"
70 depends on NFSD && PROC_FS
71 select NFSD_V3
72 select FS_POSIX_ACL
73 select SUNRPC_GSS
74 select CRYPTO
75 select GRACE_PERIOD
76 help
77 This option enables support in your system's NFS server for
78 version 4 of the NFS protocol (RFC 3530).
79
80 To export files using NFSv4, you need to install additional user
81 space programs which can be found in the Linux nfs-utils package,
82 available from http://linux-nfs.org/.
83
84 If unsure, say N.
85
86config NFSD_PNFS
87 bool
88
89config NFSD_BLOCKLAYOUT
90 bool "NFSv4.1 server support for pNFS block layouts"
91 depends on NFSD_V4 && BLOCK
92 select NFSD_PNFS
93 help
94 This option enables support for the exporting pNFS block layouts
95 in the kernel's NFS server. The pNFS block layout enables NFS
96 clients to directly perform I/O to block devices accesible to both
97 the server and the clients. See RFC 5663 for more details.
98
99 If unsure, say N.
100
101config NFSD_SCSILAYOUT
102 bool "NFSv4.1 server support for pNFS SCSI layouts"
103 depends on NFSD_V4 && BLOCK
104 select NFSD_PNFS
105 help
106 This option enables support for the exporting pNFS SCSI layouts
107 in the kernel's NFS server. The pNFS SCSI layout enables NFS
108 clients to directly perform I/O to SCSI devices accesible to both
109 the server and the clients. See draft-ietf-nfsv4-scsi-layout for
110 more details.
111
112 If unsure, say N.
113
114config NFSD_V4_SECURITY_LABEL
115 bool "Provide Security Label support for NFSv4 server"
116 depends on NFSD_V4 && SECURITY
117 help
118
119 Say Y here if you want enable fine-grained security label attribute
120 support for NFS version 4. Security labels allow security modules like
121 SELinux and Smack to label files to facilitate enforcement of their policies.
122 Without this an NFSv4 mount will have the same label on each file.
123
124 If you do not wish to enable fine-grained security labels SELinux or
125 Smack policies on NFSv4 files, say N.
126
127config NFSD_FAULT_INJECTION
128 bool "NFS server manual fault injection"
129 depends on NFSD_V4 && DEBUG_KERNEL && DEBUG_FS
130 help
131 This option enables support for manually injecting faults
132 into the NFS server. This is intended to be used for
133 testing error recovery on the NFS client.
134
135 If unsure, say N.