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 <<
37 bool "NFS server support for NFS versi <<
38 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 <<
45 If unsure, say N. <<
46 <<
47 config NFSD_V2_ACL 34 config NFSD_V2_ACL
48 bool "NFS server support for the NFSv2 !! 35 bool
49 depends on NFSD_V2 !! 36 depends on NFSD
50 37
51 config NFSD_V3_ACL 38 config NFSD_V3_ACL
52 bool "NFS server support for the NFSv3 39 bool "NFS server support for the NFSv3 ACL protocol extension"
53 depends on NFSD 40 depends on NFSD
>> 41 select NFSD_V2_ACL
54 help 42 help
55 Solaris NFS servers support an auxil 43 Solaris NFS servers support an auxiliary NFSv3 ACL protocol that
56 never became an official part of the 44 never became an official part of the NFS version 3 protocol.
57 This protocol extension allows appli 45 This protocol extension allows applications on NFS clients to
58 manipulate POSIX Access Control List 46 manipulate POSIX Access Control Lists on files residing on NFS
59 servers. NFS servers enforce POSIX 47 servers. NFS servers enforce POSIX ACLs on local files whether
60 this protocol is available or not. 48 this protocol is available or not.
61 49
62 This option enables support in your 50 This option enables support in your system's NFS server for the
63 NFSv3 ACL protocol extension allowin 51 NFSv3 ACL protocol extension allowing NFS clients to manipulate
64 POSIX ACLs on files exported by your 52 POSIX ACLs on files exported by your system's NFS server. NFS
65 clients which support the Solaris NF 53 clients which support the Solaris NFSv3 ACL protocol can then
66 access and modify ACLs on your NFS s 54 access and modify ACLs on your NFS server.
67 55
68 To store ACLs on your NFS server, yo 56 To store ACLs on your NFS server, you also need to enable ACL-
69 related CONFIG options for your loca 57 related CONFIG options for your local file systems of choice.
70 58
71 If unsure, say N. 59 If unsure, say N.
72 60
73 config NFSD_V4 61 config NFSD_V4
74 bool "NFS server support for NFS versi 62 bool "NFS server support for NFS version 4"
75 depends on NFSD && PROC_FS 63 depends on NFSD && PROC_FS
76 select FS_POSIX_ACL 64 select FS_POSIX_ACL
77 select RPCSEC_GSS_KRB5 !! 65 select SUNRPC_GSS
78 select CRYPTO 66 select CRYPTO
79 select CRYPTO_MD5 67 select CRYPTO_MD5
80 select CRYPTO_SHA256 68 select CRYPTO_SHA256
81 select GRACE_PERIOD 69 select GRACE_PERIOD
82 select NFS_V4_2_SSC_HELPER if NFS_V4_2 70 select NFS_V4_2_SSC_HELPER if NFS_V4_2
83 help 71 help
84 This option enables support in your 72 This option enables support in your system's NFS server for
85 version 4 of the NFS protocol (RFC 3 73 version 4 of the NFS protocol (RFC 3530).
86 74
87 To export files using NFSv4, you nee 75 To export files using NFSv4, you need to install additional user
88 space programs which can be found in 76 space programs which can be found in the Linux nfs-utils package,
89 available from http://linux-nfs.org/ 77 available from http://linux-nfs.org/.
90 78
91 If unsure, say N. 79 If unsure, say N.
92 80
93 config NFSD_PNFS 81 config NFSD_PNFS
94 bool 82 bool
95 83
96 config NFSD_BLOCKLAYOUT 84 config NFSD_BLOCKLAYOUT
97 bool "NFSv4.1 server support for pNFS 85 bool "NFSv4.1 server support for pNFS block layouts"
98 depends on NFSD_V4 && BLOCK 86 depends on NFSD_V4 && BLOCK
99 select NFSD_PNFS 87 select NFSD_PNFS
100 select EXPORTFS_BLOCK_OPS 88 select EXPORTFS_BLOCK_OPS
101 help 89 help
102 This option enables support for the 90 This option enables support for the exporting pNFS block layouts
103 in the kernel's NFS server. The pNFS 91 in the kernel's NFS server. The pNFS block layout enables NFS
104 clients to directly perform I/O to b 92 clients to directly perform I/O to block devices accessible to both
105 the server and the clients. See RFC 93 the server and the clients. See RFC 5663 for more details.
106 94
107 If unsure, say N. 95 If unsure, say N.
108 96
109 config NFSD_SCSILAYOUT 97 config NFSD_SCSILAYOUT
110 bool "NFSv4.1 server support for pNFS 98 bool "NFSv4.1 server support for pNFS SCSI layouts"
111 depends on NFSD_V4 && BLOCK 99 depends on NFSD_V4 && BLOCK
112 select NFSD_PNFS 100 select NFSD_PNFS
113 select EXPORTFS_BLOCK_OPS 101 select EXPORTFS_BLOCK_OPS
114 help 102 help
115 This option enables support for the 103 This option enables support for the exporting pNFS SCSI layouts
116 in the kernel's NFS server. The pNFS 104 in the kernel's NFS server. The pNFS SCSI layout enables NFS
117 clients to directly perform I/O to S 105 clients to directly perform I/O to SCSI devices accessible to both
118 the server and the clients. See dra 106 the server and the clients. See draft-ietf-nfsv4-scsi-layout for
119 more details. 107 more details.
120 108
121 If unsure, say N. 109 If unsure, say N.
122 110
123 config NFSD_FLEXFILELAYOUT 111 config NFSD_FLEXFILELAYOUT
124 bool "NFSv4.1 server support for pNFS 112 bool "NFSv4.1 server support for pNFS Flex File layouts"
125 depends on NFSD_V4 113 depends on NFSD_V4
126 select NFSD_PNFS 114 select NFSD_PNFS
127 help 115 help
128 This option enables support for the 116 This option enables support for the exporting pNFS Flex File
129 layouts in the kernel's NFS server. 117 layouts in the kernel's NFS server. The pNFS Flex File layout
130 enables NFS clients to directly perf 118 enables NFS clients to directly perform I/O to NFSv3 devices
131 accessible to both the server and th 119 accessible to both the server and the clients. See
132 draft-ietf-nfsv4-flex-files for more 120 draft-ietf-nfsv4-flex-files for more details.
133 121
134 Warning, this server implements the 122 Warning, this server implements the bare minimum functionality
135 to be a flex file server - it is for 123 to be a flex file server - it is for testing the client,
136 not for use in production. 124 not for use in production.
137 125
138 If unsure, say N. 126 If unsure, say N.
139 127
140 config NFSD_V4_2_INTER_SSC 128 config NFSD_V4_2_INTER_SSC
141 bool "NFSv4.2 inter server to server C 129 bool "NFSv4.2 inter server to server COPY"
142 depends on NFSD_V4 && NFS_V4_2 130 depends on NFSD_V4 && NFS_V4_2
143 help 131 help
144 This option enables support for NFSv 132 This option enables support for NFSv4.2 inter server to
145 server copy where the destination se 133 server copy where the destination server calls the NFSv4.2
146 client to read the data to copy from 134 client to read the data to copy from the source server.
147 135
148 If unsure, say N. 136 If unsure, say N.
149 137
150 config NFSD_V4_SECURITY_LABEL 138 config NFSD_V4_SECURITY_LABEL
151 bool "Provide Security Label support f 139 bool "Provide Security Label support for NFSv4 server"
152 depends on NFSD_V4 && SECURITY 140 depends on NFSD_V4 && SECURITY
153 help 141 help
154 142
155 Say Y here if you want enable fine-gra 143 Say Y here if you want enable fine-grained security label attribute
156 support for NFS version 4. Security l 144 support for NFS version 4. Security labels allow security modules like
157 SELinux and Smack to label files to fa 145 SELinux and Smack to label files to facilitate enforcement of their policies.
158 Without this an NFSv4 mount will have 146 Without this an NFSv4 mount will have the same label on each file.
159 147
160 If you do not wish to enable fine-grai 148 If you do not wish to enable fine-grained security labels SELinux or
161 Smack policies on NFSv4 files, say N. 149 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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