1# SPDX-License-Identifier: GPL-2.0-only 2config NFSD 3 tristate "NFS server support" 4 depends on INET 5 depends on FILE_LOCKING 6 select LOCKD 7 select SUNRPC 8 select EXPORTFS 9 select NFS_ACL_SUPPORT if NFSD_V2_ACL 10 depends on MULTIUSER 11 help 12 Choose Y here if you want to allow other computers to access 13 files residing on this system using Sun's Network File System 14 protocol. To compile the NFS server support as a module, 15 choose M here: the module will be called nfsd. 16 17 You may choose to use a user-space NFS server instead, in which 18 case you can choose N here. 19 20 To export local file systems using NFS, you also need to install 21 user space programs which can be found in the Linux nfs-utils 22 package, available from http://linux-nfs.org/. More detail about 23 the Linux NFS server implementation is available via the 24 exports(5) man page. 25 26 Below you can choose which versions of the NFS protocol are 27 available to clients mounting the NFS server on this system. 28 Support for NFS version 2 (RFC 1094) is always available when 29 CONFIG_NFSD is selected. 30 31 If unsure, say N. 32 33config NFSD_V2_ACL 34 bool 35 depends on NFSD 36 37config 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). 43 44 If unsure, say Y. 45 46config NFSD_V3_ACL 47 bool "NFS server support for the NFSv3 ACL protocol extension" 48 depends on NFSD_V3 49 select NFSD_V2_ACL 50 help 51 Solaris NFS servers support an auxiliary NFSv3 ACL protocol that 52 never became an official part of the NFS version 3 protocol. 53 This protocol extension allows applications on NFS clients to 54 manipulate POSIX Access Control Lists on files residing on NFS 55 servers. NFS servers enforce POSIX ACLs on local files whether 56 this protocol is available or not. 57 58 This option enables support in your system's NFS server for the 59 NFSv3 ACL protocol extension allowing NFS clients to manipulate 60 POSIX ACLs on files exported by your system's NFS server. NFS 61 clients which support the Solaris NFSv3 ACL protocol can then 62 access and modify ACLs on your NFS server. 63 64 To store ACLs on your NFS server, you also need to enable ACL- 65 related CONFIG options for your local file systems of choice. 66 67 If unsure, say N. 68 69config NFSD_V4 70 bool "NFS server support for NFS version 4" 71 depends on NFSD && PROC_FS 72 select NFSD_V3 73 select FS_POSIX_ACL 74 select SUNRPC_GSS 75 select CRYPTO 76 select GRACE_PERIOD 77 help 78 This option enables support in your system's NFS server for 79 version 4 of the NFS protocol (RFC 3530). 80 81 To export files using NFSv4, you need to install additional user 82 space programs which can be found in the Linux nfs-utils package, 83 available from http://linux-nfs.org/. 84 85 If unsure, say N. 86 87config NFSD_PNFS 88 bool 89 90config NFSD_BLOCKLAYOUT 91 bool "NFSv4.1 server support for pNFS block layouts" 92 depends on NFSD_V4 && BLOCK 93 select NFSD_PNFS 94 select EXPORTFS_BLOCK_OPS 95 help 96 This option enables support for the exporting pNFS block layouts 97 in the kernel's NFS server. The pNFS block layout enables NFS 98 clients to directly perform I/O to block devices accesible to both 99 the server and the clients. See RFC 5663 for more details. 100 101 If unsure, say N. 102 103config NFSD_SCSILAYOUT 104 bool "NFSv4.1 server support for pNFS SCSI layouts" 105 depends on NFSD_V4 && BLOCK 106 select NFSD_PNFS 107 select EXPORTFS_BLOCK_OPS 108 select BLK_SCSI_REQUEST 109 help 110 This option enables support for the exporting pNFS SCSI layouts 111 in the kernel's NFS server. The pNFS SCSI layout enables NFS 112 clients to directly perform I/O to SCSI devices accesible to both 113 the server and the clients. See draft-ietf-nfsv4-scsi-layout for 114 more details. 115 116 If unsure, say N. 117 118config NFSD_FLEXFILELAYOUT 119 bool "NFSv4.1 server support for pNFS Flex File layouts" 120 depends on NFSD_V4 121 select NFSD_PNFS 122 help 123 This option enables support for the exporting pNFS Flex File 124 layouts in the kernel's NFS server. The pNFS Flex File layout 125 enables NFS clients to directly perform I/O to NFSv3 devices 126 accesible to both the server and the clients. See 127 draft-ietf-nfsv4-flex-files for more details. 128 129 Warning, this server implements the bare minimum functionality 130 to be a flex file server - it is for testing the client, 131 not for use in production. 132 133 If unsure, say N. 134 135config NFSD_V4_SECURITY_LABEL 136 bool "Provide Security Label support for NFSv4 server" 137 depends on NFSD_V4 && SECURITY 138 help 139 140 Say Y here if you want enable fine-grained security label attribute 141 support for NFS version 4. Security labels allow security modules like 142 SELinux and Smack to label files to facilitate enforcement of their policies. 143 Without this an NFSv4 mount will have the same label on each file. 144 145 If you do not wish to enable fine-grained security labels SELinux or 146 Smack policies on NFSv4 files, say N. 147 148config NFSD_FAULT_INJECTION 149 bool "NFS server manual fault injection" 150 depends on NFSD_V4 && DEBUG_KERNEL && DEBUG_FS 151 help 152 This option enables support for manually injecting faults 153 into the NFS server. This is intended to be used for 154 testing error recovery on the NFS client. 155 156 If unsure, say N. 157