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-rw-r--r--fs/nfsd/Kconfig34
1 files changed, 31 insertions, 3 deletions
diff --git a/fs/nfsd/Kconfig b/fs/nfsd/Kconfig
index 43b88eaf0673..0b5c1a0bf1cf 100644
--- a/fs/nfsd/Kconfig
+++ b/fs/nfsd/Kconfig
@@ -4,9 +4,13 @@ config NFSD
depends on INET
depends on FILE_LOCKING
depends on FSNOTIFY
+ select CRC32
+ select CRYPTO_LIB_MD5 if NFSD_LEGACY_CLIENT_TRACKING
+ select CRYPTO_LIB_SHA256 if NFSD_V4
select LOCKD
select SUNRPC
select EXPORTFS
+ select NFS_COMMON
select NFS_ACL_SUPPORT if NFSD_V2_ACL
select NFS_ACL_SUPPORT if NFSD_V3_ACL
depends on MULTIUSER
@@ -74,9 +78,7 @@ config NFSD_V4
depends on NFSD && PROC_FS
select FS_POSIX_ACL
select RPCSEC_GSS_KRB5
- select CRYPTO
- select CRYPTO_MD5
- select CRYPTO_SHA256
+ select CRYPTO # required by RPCSEC_GSS_KRB5
select GRACE_PERIOD
select NFS_V4_2_SSC_HELPER if NFS_V4_2
help
@@ -158,3 +160,29 @@ config NFSD_V4_SECURITY_LABEL
If you do not wish to enable fine-grained security labels SELinux or
Smack policies on NFSv4 files, say N.
+
+config NFSD_LEGACY_CLIENT_TRACKING
+ bool "Support legacy NFSv4 client tracking methods (DEPRECATED)"
+ depends on NFSD_V4
+ default n
+ help
+ The NFSv4 server needs to store a small amount of information on
+ stable storage in order to handle state recovery after reboot. Most
+ modern deployments upcall to a userland daemon for this (nfsdcld),
+ but older NFS servers may store information directly in a
+ recoverydir, or spawn a process directly using a usermodehelper
+ upcall.
+
+ These legacy client tracking methods have proven to be problematic
+ and will be removed in the future. Say Y here if you need support
+ for them in the interim.
+
+config NFSD_V4_DELEG_TIMESTAMPS
+ bool "Support delegated timestamps"
+ depends on NFSD_V4
+ default n
+ help
+ NFSD implements delegated timestamps according to
+ draft-ietf-nfsv4-delstid-08 "Extending the Opening of Files". This
+ is currently an experimental feature and is therefore left disabled
+ by default.