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