fs/nfs/Kconfig

   1 config NFS_FS
   2         tristate "NFS client support"
   3         depends on INET && FILE_LOCKING
   4         depends on BKL # fix as soon as lockd is done
   5         select LOCKD
   6         select SUNRPC
   7         select NFS_ACL_SUPPORT if NFS_V3_ACL
   8         help
   9           Choose Y here if you want to access files residing on other
  10           computers using Sun's Network File System protocol.  To compile
  11           this file system support as a module, choose M here: the module
  12           will be called nfs.
  13
  14           To mount file systems exported by NFS servers, you also need to
  15           install the user space mount.nfs command which can be found in
  16           the Linux nfs-utils package, available from http://linux-nfs.org/.
  17           Information about using the mount command is available in the
  18           mount(8) man page.  More detail about the Linux NFS client
  19           implementation is available via the nfs(5) man page.
  20
  21           Below you can choose which versions of the NFS protocol are
  22           available in the kernel to mount NFS servers.  Support for NFS
  23           version 2 (RFC 1094) is always available when NFS_FS is selected.
  24
  25           To configure a system which mounts its root file system via NFS
  26           at boot time, say Y here, select "Kernel level IP
  27           autoconfiguration" in the NETWORK menu, and select "Root file
  28           system on NFS" below.  You cannot compile this file system as a
  29           module in this case.
  30
  31           If unsure, say N.
  32
  33 config NFS_V3
  34         bool "NFS client support for NFS version 3"
  35         depends on NFS_FS
  36         help
  37           This option enables support for version 3 of the NFS protocol
  38           (RFC 1813) in the kernel's NFS client.
  39
  40           If unsure, say Y.
  41
  42 config NFS_V3_ACL
  43         bool "NFS client support for the NFSv3 ACL protocol extension"
  44         depends on NFS_V3
  45         help
  46           Some NFS servers support an auxiliary NFSv3 ACL protocol that
  47           Sun added to Solaris but never became an official part of the
  48           NFS version 3 protocol.  This protocol extension allows
  49           applications on NFS clients to manipulate POSIX Access Control
  50           Lists on files residing on NFS servers.  NFS servers enforce
  51           ACLs on local files whether this protocol is available or not.
  52
  53           Choose Y here if your NFS server supports the Solaris NFSv3 ACL
  54           protocol extension and you want your NFS client to allow
  55           applications to access and modify ACLs on files on the server.
  56
  57           Most NFS servers don't support the Solaris NFSv3 ACL protocol
  58           extension.  You can choose N here or specify the "noacl" mount
  59           option to prevent your NFS client from trying to use the NFSv3
  60           ACL protocol.
  61
  62           If unsure, say N.
  63
  64 config NFS_V4
  65         bool "NFS client support for NFS version 4"
  66         depends on NFS_FS
  67         select SUNRPC_GSS
  68         help
  69           This option enables support for version 4 of the NFS protocol
  70           (RFC 3530) in the kernel's NFS client.
  71
  72           To mount NFS servers using NFSv4, you also need to install user
  73           space programs which can be found in the Linux nfs-utils package,
  74           available from http://linux-nfs.org/.
  75
  76           If unsure, say Y.
  77
  78 config NFS_V4_1
  79         bool "NFS client support for NFSv4.1 (EXPERIMENTAL)"
  80         depends on NFS_FS && NFS_V4 && EXPERIMENTAL
  81         select PNFS_FILE_LAYOUT
  82         help
  83           This option enables support for minor version 1 of the NFSv4 protocol
  84           (RFC 5661) in the kernel's NFS client.
  85
  86           If unsure, say N.
  87
  88 config PNFS_FILE_LAYOUT
  89         tristate
  90
  91 config ROOT_NFS
  92         bool "Root file system on NFS"
  93         depends on NFS_FS=y && IP_PNP
  94         help
  95           If you want your system to mount its root file system via NFS,
  96           choose Y here.  This is common practice for managing systems
  97           without local permanent storage.  For details, read
  98           <file:Documentation/filesystems/nfs/nfsroot.txt>.
  99
 100           Most people say N here.
 101
 102 config NFS_FSCACHE
 103         bool "Provide NFS client caching support"
 104         depends on NFS_FS=m && FSCACHE || NFS_FS=y && FSCACHE=y
 105         help
 106           Say Y here if you want NFS data to be cached locally on disc through
 107           the general filesystem cache manager
 108
 109 config NFS_USE_LEGACY_DNS
 110         bool "Use the legacy NFS DNS resolver"
 111         depends on NFS_V4
 112         help
 113           The kernel now provides a method for translating a host name into an
 114           IP address.  Select Y here if you would rather use your own DNS
 115           resolver script.
 116
 117           If unsure, say N
 118
 119 config NFS_USE_KERNEL_DNS
 120         bool
 121         depends on NFS_V4 && !NFS_USE_LEGACY_DNS
 122         select DNS_RESOLVER
 123         select KEYS
 124         default y
 125
 126 config NFS_USE_NEW_IDMAPPER
 127         bool "Use the new idmapper upcall routine"
 128         depends on NFS_V4 && KEYS
 129         help
 130           Say Y here if you want NFS to use the new idmapper upcall functions.
 131           You will need /sbin/request-key (usually provided by the keyutils
 132           package).  For details, read
 133           <file:Documentation/filesystems/nfs/idmapper.txt>.
 134
 135           If you are unsure, say N.