1config NFS_FS
2	tristate "NFS client support"
3	depends on INET && FILE_LOCKING && MULTIUSER
4	select LOCKD
5	select SUNRPC
6	select NFS_ACL_SUPPORT if NFS_V3_ACL
7	help
8	  Choose Y here if you want to access files residing on other
9	  computers using Sun's Network File System protocol.  To compile
10	  this file system support as a module, choose M here: the module
11	  will be called nfs.
12
13	  To mount file systems exported by NFS servers, you also need to
14	  install the user space mount.nfs command which can be found in
15	  the Linux nfs-utils package, available from http://linux-nfs.org/.
16	  Information about using the mount command is available in the
17	  mount(8) man page.  More detail about the Linux NFS client
18	  implementation is available via the nfs(5) man page.
19
20	  Below you can choose which versions of the NFS protocol are
21	  available in the kernel to mount NFS servers.  Support for NFS
22	  version 2 (RFC 1094) is always available when NFS_FS is selected.
23
24	  To configure a system which mounts its root file system via NFS
25	  at boot time, say Y here, select "Kernel level IP
26	  autoconfiguration" in the NETWORK menu, and select "Root file
27	  system on NFS" below.  You cannot compile this file system as a
28	  module in this case.
29
30	  If unsure, say N.
31
32config NFS_V2
33	tristate "NFS client support for NFS version 2"
34	depends on NFS_FS
35	default y
36	help
37	  This option enables support for version 2 of the NFS protocol
38	  (RFC 1094) in the kernel's NFS client.
39
40	  If unsure, say Y.
41
42config NFS_V3
43	tristate "NFS client support for NFS version 3"
44	depends on NFS_FS
45	default y
46	help
47	  This option enables support for version 3 of the NFS protocol
48	  (RFC 1813) in the kernel's NFS client.
49
50	  If unsure, say Y.
51
52config NFS_V3_ACL
53	bool "NFS client support for the NFSv3 ACL protocol extension"
54	depends on NFS_V3
55	help
56	  Some NFS servers support an auxiliary NFSv3 ACL protocol that
57	  Sun added to Solaris but never became an official part of the
58	  NFS version 3 protocol.  This protocol extension allows
59	  applications on NFS clients to manipulate POSIX Access Control
60	  Lists on files residing on NFS servers.  NFS servers enforce
61	  ACLs on local files whether this protocol is available or not.
62
63	  Choose Y here if your NFS server supports the Solaris NFSv3 ACL
64	  protocol extension and you want your NFS client to allow
65	  applications to access and modify ACLs on files on the server.
66
67	  Most NFS servers don't support the Solaris NFSv3 ACL protocol
68	  extension.  You can choose N here or specify the "noacl" mount
69	  option to prevent your NFS client from trying to use the NFSv3
70	  ACL protocol.
71
72	  If unsure, say N.
73
74config NFS_V4
75	tristate "NFS client support for NFS version 4"
76	depends on NFS_FS
77	select SUNRPC_GSS
78	select KEYS
79	help
80	  This option enables support for version 4 of the NFS protocol
81	  (RFC 3530) in the kernel's NFS client.
82
83	  To mount NFS servers using NFSv4, you also need to install user
84	  space programs which can be found in the Linux nfs-utils package,
85	  available from http://linux-nfs.org/.
86
87	  If unsure, say Y.
88
89config NFS_SWAP
90	bool "Provide swap over NFS support"
91	default n
92	depends on NFS_FS && SWAP
93	select SUNRPC_SWAP
94	help
95	  This option enables swapon to work on files located on NFS mounts.
96
97config NFS_V4_1
98	bool "NFS client support for NFSv4.1"
99	depends on NFS_V4
100	select SUNRPC_BACKCHANNEL
101	help
102	  This option enables support for minor version 1 of the NFSv4 protocol
103	  (RFC 5661) in the kernel's NFS client.
104
105	  If unsure, say N.
106
107config NFS_V4_2
108	bool "NFS client support for NFSv4.2"
109	depends on NFS_V4_1
110	help
111	  This option enables support for minor version 2 of the NFSv4 protocol
112	  in the kernel's NFS client.
113
114	  If unsure, say N.
115
116config PNFS_FILE_LAYOUT
117	tristate
118	depends on NFS_V4_1
119	default NFS_V4
120
121config PNFS_BLOCK
122	tristate
123	depends on NFS_V4_1 && BLK_DEV_DM
124	depends on 64BIT || LBDAF
125	default NFS_V4
126
127config PNFS_FLEXFILE_LAYOUT
128	tristate
129	depends on NFS_V4_1 && NFS_V3
130	default NFS_V4
131
132config NFS_V4_1_IMPLEMENTATION_ID_DOMAIN
133	string "NFSv4.1 Implementation ID Domain"
134	depends on NFS_V4_1
135	default "kernel.org"
136	help
137	  This option defines the domain portion of the implementation ID that
138	  may be sent in the NFS exchange_id operation.  The value must be in
139	  the format of a DNS domain name and should be set to the DNS domain
140	  name of the distribution.
141	  If the NFS client is unchanged from the upstream kernel, this
142	  option should be set to the default "kernel.org".
143
144config NFS_V4_1_MIGRATION
145	bool "NFSv4.1 client support for migration"
146	depends on NFS_V4_1
147	default n
148	help
149	  This option makes the NFS client advertise to NFSv4.1 servers that
150          it can support NFSv4 migration.
151
152          The NFSv4.1 pieces of the Linux NFSv4 migration implementation are
153          still experimental.  If you are not an NFSv4 developer, say N here.
154
155config NFS_V4_SECURITY_LABEL
156	bool
157	depends on NFS_V4_2 && SECURITY
158	default y
159
160config ROOT_NFS
161	bool "Root file system on NFS"
162	depends on NFS_FS=y && IP_PNP
163	help
164	  If you want your system to mount its root file system via NFS,
165	  choose Y here.  This is common practice for managing systems
166	  without local permanent storage.  For details, read
167	  <file:Documentation/filesystems/nfs/nfsroot.txt>.
168
169	  Most people say N here.
170
171config NFS_FSCACHE
172	bool "Provide NFS client caching support"
173	depends on NFS_FS=m && FSCACHE || NFS_FS=y && FSCACHE=y
174	help
175	  Say Y here if you want NFS data to be cached locally on disc through
176	  the general filesystem cache manager
177
178config NFS_USE_LEGACY_DNS
179	bool "Use the legacy NFS DNS resolver"
180	depends on NFS_V4
181	help
182	  The kernel now provides a method for translating a host name into an
183	  IP address.  Select Y here if you would rather use your own DNS
184	  resolver script.
185
186	  If unsure, say N
187
188config NFS_USE_KERNEL_DNS
189	bool
190	depends on NFS_V4 && !NFS_USE_LEGACY_DNS
191	select DNS_RESOLVER
192	default y
193
194config NFS_DEBUG
195	bool
196	depends on NFS_FS && SUNRPC_DEBUG
197	select CRC32
198	default y
199