fs/nfs/Kconfig

   1 config NFS_FS
   2         tristate "NFS client support"
   3         depends on INET && FILE_LOCKING
   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
  32 config 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
  42 config NFS_V3
  43         bool "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
  52 config 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
  74 config NFS_V4
  75         bool "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
  89 config NFS_V4_1
  90         bool "NFS client support for NFSv4.1 (EXPERIMENTAL)"
  91         depends on NFS_V4 && EXPERIMENTAL
  92         select SUNRPC_BACKCHANNEL
  93         help
  94           This option enables support for minor version 1 of the NFSv4 protocol
  95           (RFC 5661) in the kernel's NFS client.
  96
  97           If unsure, say N.
  98
  99 config PNFS_FILE_LAYOUT
 100         tristate
 101         depends on NFS_V4_1
 102         default m
 103
 104 config PNFS_BLOCK
 105         tristate
 106         depends on NFS_V4_1 && BLK_DEV_DM
 107         default m
 108
 109 config PNFS_OBJLAYOUT
 110         tristate
 111         depends on NFS_V4_1 && SCSI_OSD_ULD
 112         default m
 113
 114 config NFS_V4_1_IMPLEMENTATION_ID_DOMAIN
 115         string "NFSv4.1 Implementation ID Domain"
 116         depends on NFS_V4_1
 117         default "kernel.org"
 118         help
 119           This option defines the domain portion of the implementation ID that
 120           may be sent in the NFS exchange_id operation.  The value must be in
 121           the format of a DNS domain name and should be set to the DNS domain
 122           name of the distribution.
 123           If the NFS client is unchanged from the upstream kernel, this
 124           option should be set to the default "kernel.org".
 125
 126 config ROOT_NFS
 127         bool "Root file system on NFS"
 128         depends on NFS_FS=y && IP_PNP
 129         help
 130           If you want your system to mount its root file system via NFS,
 131           choose Y here.  This is common practice for managing systems
 132           without local permanent storage.  For details, read
 133           <file:Documentation/filesystems/nfs/nfsroot.txt>.
 134
 135           Most people say N here.
 136
 137 config NFS_FSCACHE
 138         bool "Provide NFS client caching support"
 139         depends on NFS_FS=m && FSCACHE || NFS_FS=y && FSCACHE=y
 140         help
 141           Say Y here if you want NFS data to be cached locally on disc through
 142           the general filesystem cache manager
 143
 144 config NFS_USE_LEGACY_DNS
 145         bool "Use the legacy NFS DNS resolver"
 146         depends on NFS_V4
 147         help
 148           The kernel now provides a method for translating a host name into an
 149           IP address.  Select Y here if you would rather use your own DNS
 150           resolver script.
 151
 152           If unsure, say N
 153
 154 config NFS_USE_KERNEL_DNS
 155         bool
 156         depends on NFS_V4 && !NFS_USE_LEGACY_DNS
 157         select DNS_RESOLVER
 158         default y
 159
 160 config NFS_DEBUG
 161         bool
 162         depends on NFS_FS && SUNRPC_DEBUG
 163         select CRC32
 164         default y