1 # SPDX-License-Identifier: GPL-2.0-only <<
2 config NFSD 1 config NFSD
3 tristate "NFS server support" 2 tristate "NFS server support"
4 depends on INET 3 depends on INET
5 depends on FILE_LOCKING 4 depends on FILE_LOCKING
6 depends on FSNOTIFY <<
7 select LOCKD 5 select LOCKD
8 select SUNRPC 6 select SUNRPC
9 select EXPORTFS 7 select EXPORTFS
10 select NFS_COMMON <<
11 select NFS_ACL_SUPPORT if NFSD_V2_ACL 8 select NFS_ACL_SUPPORT if NFSD_V2_ACL
12 select NFS_ACL_SUPPORT if NFSD_V3_ACL <<
13 depends on MULTIUSER 9 depends on MULTIUSER
14 help 10 help
15 Choose Y here if you want to allow o 11 Choose Y here if you want to allow other computers to access
16 files residing on this system using 12 files residing on this system using Sun's Network File System
17 protocol. To compile the NFS server 13 protocol. To compile the NFS server support as a module,
18 choose M here: the module will be ca 14 choose M here: the module will be called nfsd.
19 15
20 You may choose to use a user-space N 16 You may choose to use a user-space NFS server instead, in which
21 case you can choose N here. 17 case you can choose N here.
22 18
23 To export local file systems using N 19 To export local file systems using NFS, you also need to install
24 user space programs which can be fou 20 user space programs which can be found in the Linux nfs-utils
25 package, available from http://linux 21 package, available from http://linux-nfs.org/. More detail about
26 the Linux NFS server implementation 22 the Linux NFS server implementation is available via the
27 exports(5) man page. 23 exports(5) man page.
28 24
29 Below you can choose which versions 25 Below you can choose which versions of the NFS protocol are
30 available to clients mounting the NF 26 available to clients mounting the NFS server on this system.
31 Support for NFS version 3 (RFC 1813) !! 27 Support for NFS version 2 (RFC 1094) is always available when
32 CONFIG_NFSD is selected. 28 CONFIG_NFSD is selected.
33 29
34 If unsure, say N. 30 If unsure, say N.
35 31
36 config NFSD_V2 !! 32 config NFSD_V2_ACL
37 bool "NFS server support for NFS versi !! 33 bool
38 depends on NFSD 34 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 35
45 If unsure, say N. !! 36 config 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).
46 42
47 config NFSD_V2_ACL !! 43 If unsure, say Y.
48 bool "NFS server support for the NFSv2 <<
49 depends on NFSD_V2 <<
50 44
51 config NFSD_V3_ACL 45 config NFSD_V3_ACL
52 bool "NFS server support for the NFSv3 46 bool "NFS server support for the NFSv3 ACL protocol extension"
53 depends on NFSD !! 47 depends on NFSD_V3
>> 48 select NFSD_V2_ACL
54 help 49 help
55 Solaris NFS servers support an auxil 50 Solaris NFS servers support an auxiliary NFSv3 ACL protocol that
56 never became an official part of the 51 never became an official part of the NFS version 3 protocol.
57 This protocol extension allows appli 52 This protocol extension allows applications on NFS clients to
58 manipulate POSIX Access Control List 53 manipulate POSIX Access Control Lists on files residing on NFS
59 servers. NFS servers enforce POSIX 54 servers. NFS servers enforce POSIX ACLs on local files whether
60 this protocol is available or not. 55 this protocol is available or not.
61 56
62 This option enables support in your 57 This option enables support in your system's NFS server for the
63 NFSv3 ACL protocol extension allowin 58 NFSv3 ACL protocol extension allowing NFS clients to manipulate
64 POSIX ACLs on files exported by your 59 POSIX ACLs on files exported by your system's NFS server. NFS
65 clients which support the Solaris NF 60 clients which support the Solaris NFSv3 ACL protocol can then
66 access and modify ACLs on your NFS s 61 access and modify ACLs on your NFS server.
67 62
68 To store ACLs on your NFS server, yo 63 To store ACLs on your NFS server, you also need to enable ACL-
69 related CONFIG options for your loca 64 related CONFIG options for your local file systems of choice.
70 65
71 If unsure, say N. 66 If unsure, say N.
72 67
73 config NFSD_V4 68 config NFSD_V4
74 bool "NFS server support for NFS versi 69 bool "NFS server support for NFS version 4"
75 depends on NFSD && PROC_FS 70 depends on NFSD && PROC_FS
>> 71 select NFSD_V3
76 select FS_POSIX_ACL 72 select FS_POSIX_ACL
77 select RPCSEC_GSS_KRB5 !! 73 select SUNRPC_GSS
78 select CRYPTO 74 select CRYPTO
79 select CRYPTO_MD5 <<
80 select CRYPTO_SHA256 <<
81 select GRACE_PERIOD 75 select GRACE_PERIOD
82 select NFS_V4_2_SSC_HELPER if NFS_V4_2 <<
83 help 76 help
84 This option enables support in your 77 This option enables support in your system's NFS server for
85 version 4 of the NFS protocol (RFC 3 78 version 4 of the NFS protocol (RFC 3530).
86 79
87 To export files using NFSv4, you nee 80 To export files using NFSv4, you need to install additional user
88 space programs which can be found in 81 space programs which can be found in the Linux nfs-utils package,
89 available from http://linux-nfs.org/ 82 available from http://linux-nfs.org/.
90 83
91 If unsure, say N. 84 If unsure, say N.
92 85
93 config NFSD_PNFS 86 config NFSD_PNFS
94 bool !! 87 bool "NFSv4.1 server support for Parallel NFS (pNFS)"
95 <<
96 config NFSD_BLOCKLAYOUT <<
97 bool "NFSv4.1 server support for pNFS <<
98 depends on NFSD_V4 && BLOCK <<
99 select NFSD_PNFS <<
100 select EXPORTFS_BLOCK_OPS <<
101 help <<
102 This option enables support for the <<
103 in the kernel's NFS server. The pNFS <<
104 clients to directly perform I/O to b <<
105 the server and the clients. See RFC <<
106 <<
107 If unsure, say N. <<
108 <<
109 config NFSD_SCSILAYOUT <<
110 bool "NFSv4.1 server support for pNFS <<
111 depends on NFSD_V4 && BLOCK <<
112 select NFSD_PNFS <<
113 select EXPORTFS_BLOCK_OPS <<
114 help <<
115 This option enables support for the <<
116 in the kernel's NFS server. The pNFS <<
117 clients to directly perform I/O to S <<
118 the server and the clients. See dra <<
119 more details. <<
120 <<
121 If unsure, say N. <<
122 <<
123 config NFSD_FLEXFILELAYOUT <<
124 bool "NFSv4.1 server support for pNFS <<
125 depends on NFSD_V4 88 depends on NFSD_V4
126 select NFSD_PNFS <<
127 help 89 help
128 This option enables support for the !! 90 This option enables support for the parallel NFS features of the
129 layouts in the kernel's NFS server. !! 91 minor version 1 of the NFSv4 protocol (RFC5661) in the kernel's NFS
130 enables NFS clients to directly perf !! 92 server.
131 accessible to both the server and th <<
132 draft-ietf-nfsv4-flex-files for more <<
133 <<
134 Warning, this server implements the <<
135 to be a flex file server - it is for <<
136 not for use in production. <<
137 <<
138 If unsure, say N. <<
139 <<
140 config NFSD_V4_2_INTER_SSC <<
141 bool "NFSv4.2 inter server to server C <<
142 depends on NFSD_V4 && NFS_V4_2 <<
143 help <<
144 This option enables support for NFSv <<
145 server copy where the destination se <<
146 client to read the data to copy from <<
147 93
148 If unsure, say N. 94 If unsure, say N.
149 95
150 config NFSD_V4_SECURITY_LABEL 96 config NFSD_V4_SECURITY_LABEL
151 bool "Provide Security Label support f 97 bool "Provide Security Label support for NFSv4 server"
152 depends on NFSD_V4 && SECURITY 98 depends on NFSD_V4 && SECURITY
153 help 99 help
154 100
155 Say Y here if you want enable fine-gra 101 Say Y here if you want enable fine-grained security label attribute
156 support for NFS version 4. Security l 102 support for NFS version 4. Security labels allow security modules like
157 SELinux and Smack to label files to fa 103 SELinux and Smack to label files to facilitate enforcement of their policies.
158 Without this an NFSv4 mount will have 104 Without this an NFSv4 mount will have the same label on each file.
159 105
160 If you do not wish to enable fine-grai 106 If you do not wish to enable fine-grained security labels SELinux or
161 Smack policies on NFSv4 files, say N. 107 Smack policies on NFSv4 files, say N.
162 108
163 config NFSD_LEGACY_CLIENT_TRACKING !! 109 config NFSD_FAULT_INJECTION
164 bool "Support legacy NFSv4 client trac !! 110 bool "NFS server manual fault injection"
165 depends on NFSD_V4 !! 111 depends on NFSD_V4 && DEBUG_KERNEL && DEBUG_FS
166 default y !! 112 help
167 help !! 113 This option enables support for manually injecting faults
168 The NFSv4 server needs to store a sm !! 114 into the NFS server. This is intended to be used for
169 stable storage in order to handle st !! 115 testing error recovery on the NFS client.
170 modern deployments upcall to a userl !! 116
171 but older NFS servers may store info !! 117 If unsure, say N.
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. <<
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.