1 # SPDX-License-Identifier: GPL-2.0-only 1 # SPDX-License-Identifier: GPL-2.0-only
2 config NFSD 2 config NFSD
3 tristate "NFS server support" 3 tristate "NFS server support"
4 depends on INET 4 depends on INET
5 depends on FILE_LOCKING 5 depends on FILE_LOCKING
6 depends on FSNOTIFY 6 depends on FSNOTIFY
7 select LOCKD 7 select LOCKD
8 select SUNRPC 8 select SUNRPC
9 select EXPORTFS 9 select EXPORTFS
10 select NFS_COMMON <<
11 select NFS_ACL_SUPPORT if NFSD_V2_ACL 10 select NFS_ACL_SUPPORT if NFSD_V2_ACL
12 select NFS_ACL_SUPPORT if NFSD_V3_ACL <<
13 depends on MULTIUSER 11 depends on MULTIUSER
14 help 12 help
15 Choose Y here if you want to allow o 13 Choose Y here if you want to allow other computers to access
16 files residing on this system using 14 files residing on this system using Sun's Network File System
17 protocol. To compile the NFS server 15 protocol. To compile the NFS server support as a module,
18 choose M here: the module will be ca 16 choose M here: the module will be called nfsd.
19 17
20 You may choose to use a user-space N 18 You may choose to use a user-space NFS server instead, in which
21 case you can choose N here. 19 case you can choose N here.
22 20
23 To export local file systems using N 21 To export local file systems using NFS, you also need to install
24 user space programs which can be fou 22 user space programs which can be found in the Linux nfs-utils
25 package, available from http://linux 23 package, available from http://linux-nfs.org/. More detail about
26 the Linux NFS server implementation 24 the Linux NFS server implementation is available via the
27 exports(5) man page. 25 exports(5) man page.
28 26
29 Below you can choose which versions 27 Below you can choose which versions of the NFS protocol are
30 available to clients mounting the NF 28 available to clients mounting the NFS server on this system.
31 Support for NFS version 3 (RFC 1813) !! 29 Support for NFS version 2 (RFC 1094) is always available when
32 CONFIG_NFSD is selected. 30 CONFIG_NFSD is selected.
33 31
34 If unsure, say N. 32 If unsure, say N.
35 33
36 config NFSD_V2 !! 34 config NFSD_V2_ACL
37 bool "NFS server support for NFS versi !! 35 bool
38 depends on NFSD 36 depends on NFSD
39 default n <<
40 help <<
41 NFSv2 (RFC 1094) was the first publi <<
42 Unless you are hosting ancient (1990 <<
43 need this. <<
44 37
45 If unsure, say N. !! 38 config NFSD_V3
>> 39 bool "NFS server support for NFS version 3"
>> 40 depends on NFSD
>> 41 help
>> 42 This option enables support in your system's NFS server for
>> 43 version 3 of the NFS protocol (RFC 1813).
46 44
47 config NFSD_V2_ACL !! 45 If unsure, say Y.
48 bool "NFS server support for the NFSv2 <<
49 depends on NFSD_V2 <<
50 46
51 config NFSD_V3_ACL 47 config NFSD_V3_ACL
52 bool "NFS server support for the NFSv3 48 bool "NFS server support for the NFSv3 ACL protocol extension"
53 depends on NFSD !! 49 depends on NFSD_V3
>> 50 select NFSD_V2_ACL
54 help 51 help
55 Solaris NFS servers support an auxil 52 Solaris NFS servers support an auxiliary NFSv3 ACL protocol that
56 never became an official part of the 53 never became an official part of the NFS version 3 protocol.
57 This protocol extension allows appli 54 This protocol extension allows applications on NFS clients to
58 manipulate POSIX Access Control List 55 manipulate POSIX Access Control Lists on files residing on NFS
59 servers. NFS servers enforce POSIX 56 servers. NFS servers enforce POSIX ACLs on local files whether
60 this protocol is available or not. 57 this protocol is available or not.
61 58
62 This option enables support in your 59 This option enables support in your system's NFS server for the
63 NFSv3 ACL protocol extension allowin 60 NFSv3 ACL protocol extension allowing NFS clients to manipulate
64 POSIX ACLs on files exported by your 61 POSIX ACLs on files exported by your system's NFS server. NFS
65 clients which support the Solaris NF 62 clients which support the Solaris NFSv3 ACL protocol can then
66 access and modify ACLs on your NFS s 63 access and modify ACLs on your NFS server.
67 64
68 To store ACLs on your NFS server, yo 65 To store ACLs on your NFS server, you also need to enable ACL-
69 related CONFIG options for your loca 66 related CONFIG options for your local file systems of choice.
70 67
71 If unsure, say N. 68 If unsure, say N.
72 69
73 config NFSD_V4 70 config NFSD_V4
74 bool "NFS server support for NFS versi 71 bool "NFS server support for NFS version 4"
75 depends on NFSD && PROC_FS 72 depends on NFSD && PROC_FS
>> 73 select NFSD_V3
76 select FS_POSIX_ACL 74 select FS_POSIX_ACL
77 select RPCSEC_GSS_KRB5 !! 75 select SUNRPC_GSS
78 select CRYPTO 76 select CRYPTO
79 select CRYPTO_MD5 77 select CRYPTO_MD5
80 select CRYPTO_SHA256 78 select CRYPTO_SHA256
81 select GRACE_PERIOD 79 select GRACE_PERIOD
82 select NFS_V4_2_SSC_HELPER if NFS_V4_2 80 select NFS_V4_2_SSC_HELPER if NFS_V4_2
83 help 81 help
84 This option enables support in your 82 This option enables support in your system's NFS server for
85 version 4 of the NFS protocol (RFC 3 83 version 4 of the NFS protocol (RFC 3530).
86 84
87 To export files using NFSv4, you nee 85 To export files using NFSv4, you need to install additional user
88 space programs which can be found in 86 space programs which can be found in the Linux nfs-utils package,
89 available from http://linux-nfs.org/ 87 available from http://linux-nfs.org/.
90 88
91 If unsure, say N. 89 If unsure, say N.
92 90
93 config NFSD_PNFS 91 config NFSD_PNFS
94 bool 92 bool
95 93
96 config NFSD_BLOCKLAYOUT 94 config NFSD_BLOCKLAYOUT
97 bool "NFSv4.1 server support for pNFS 95 bool "NFSv4.1 server support for pNFS block layouts"
98 depends on NFSD_V4 && BLOCK 96 depends on NFSD_V4 && BLOCK
99 select NFSD_PNFS 97 select NFSD_PNFS
100 select EXPORTFS_BLOCK_OPS 98 select EXPORTFS_BLOCK_OPS
101 help 99 help
102 This option enables support for the 100 This option enables support for the exporting pNFS block layouts
103 in the kernel's NFS server. The pNFS 101 in the kernel's NFS server. The pNFS block layout enables NFS
104 clients to directly perform I/O to b 102 clients to directly perform I/O to block devices accessible to both
105 the server and the clients. See RFC 103 the server and the clients. See RFC 5663 for more details.
106 104
107 If unsure, say N. 105 If unsure, say N.
108 106
109 config NFSD_SCSILAYOUT 107 config NFSD_SCSILAYOUT
110 bool "NFSv4.1 server support for pNFS 108 bool "NFSv4.1 server support for pNFS SCSI layouts"
111 depends on NFSD_V4 && BLOCK 109 depends on NFSD_V4 && BLOCK
112 select NFSD_PNFS 110 select NFSD_PNFS
113 select EXPORTFS_BLOCK_OPS 111 select EXPORTFS_BLOCK_OPS
114 help 112 help
115 This option enables support for the 113 This option enables support for the exporting pNFS SCSI layouts
116 in the kernel's NFS server. The pNFS 114 in the kernel's NFS server. The pNFS SCSI layout enables NFS
117 clients to directly perform I/O to S 115 clients to directly perform I/O to SCSI devices accessible to both
118 the server and the clients. See dra 116 the server and the clients. See draft-ietf-nfsv4-scsi-layout for
119 more details. 117 more details.
120 118
121 If unsure, say N. 119 If unsure, say N.
122 120
123 config NFSD_FLEXFILELAYOUT 121 config NFSD_FLEXFILELAYOUT
124 bool "NFSv4.1 server support for pNFS 122 bool "NFSv4.1 server support for pNFS Flex File layouts"
125 depends on NFSD_V4 123 depends on NFSD_V4
126 select NFSD_PNFS 124 select NFSD_PNFS
127 help 125 help
128 This option enables support for the 126 This option enables support for the exporting pNFS Flex File
129 layouts in the kernel's NFS server. 127 layouts in the kernel's NFS server. The pNFS Flex File layout
130 enables NFS clients to directly perf 128 enables NFS clients to directly perform I/O to NFSv3 devices
131 accessible to both the server and th 129 accessible to both the server and the clients. See
132 draft-ietf-nfsv4-flex-files for more 130 draft-ietf-nfsv4-flex-files for more details.
133 131
134 Warning, this server implements the 132 Warning, this server implements the bare minimum functionality
135 to be a flex file server - it is for 133 to be a flex file server - it is for testing the client,
136 not for use in production. 134 not for use in production.
137 135
138 If unsure, say N. 136 If unsure, say N.
139 137
140 config NFSD_V4_2_INTER_SSC 138 config NFSD_V4_2_INTER_SSC
141 bool "NFSv4.2 inter server to server C 139 bool "NFSv4.2 inter server to server COPY"
142 depends on NFSD_V4 && NFS_V4_2 140 depends on NFSD_V4 && NFS_V4_2
143 help 141 help
144 This option enables support for NFSv 142 This option enables support for NFSv4.2 inter server to
145 server copy where the destination se 143 server copy where the destination server calls the NFSv4.2
146 client to read the data to copy from 144 client to read the data to copy from the source server.
147 145
148 If unsure, say N. 146 If unsure, say N.
149 147
150 config NFSD_V4_SECURITY_LABEL 148 config NFSD_V4_SECURITY_LABEL
151 bool "Provide Security Label support f 149 bool "Provide Security Label support for NFSv4 server"
152 depends on NFSD_V4 && SECURITY 150 depends on NFSD_V4 && SECURITY
153 help 151 help
154 152
155 Say Y here if you want enable fine-gra 153 Say Y here if you want enable fine-grained security label attribute
156 support for NFS version 4. Security l 154 support for NFS version 4. Security labels allow security modules like
157 SELinux and Smack to label files to fa 155 SELinux and Smack to label files to facilitate enforcement of their policies.
158 Without this an NFSv4 mount will have 156 Without this an NFSv4 mount will have the same label on each file.
159 157
160 If you do not wish to enable fine-grai 158 If you do not wish to enable fine-grained security labels SELinux or
161 Smack policies on NFSv4 files, say N. 159 Smack policies on NFSv4 files, say N.
162 <<
163 config NFSD_LEGACY_CLIENT_TRACKING <<
164 bool "Support legacy NFSv4 client trac <<
165 depends on NFSD_V4 <<
166 default y <<
167 help <<
168 The NFSv4 server needs to store a sm <<
169 stable storage in order to handle st <<
170 modern deployments upcall to a userl <<
171 but older NFS servers may store info <<
172 recoverydir, or spawn a process dire <<
173 upcall. <<
174 <<
175 These legacy client tracking methods <<
176 and will be removed in the future. S <<
177 for them in the interim. <<
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