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authorJim Garlick <garlick@llnl.gov>2013-05-29 12:09:39 -0700
committerEric Van Hensbergen <ericvh@gmail.com>2013-07-07 22:02:18 -0500
commitd9a738597faf7cd2edeec82ce8fd81969fed8390 (patch)
treef8d28d334442ce32e7e1bf7ade94daa1487b6f34 /fs/9p/Kconfig
parent2f28c8b31dc501027d9aa6acf496c5941736312b (diff)
downloadlinux-d9a738597faf7cd2edeec82ce8fd81969fed8390.tar.bz2
fs/9p: xattr: add trusted and security namespaces
Allow requests for security.* and trusted.* xattr name spaces to pass through to server. The new files are 99% cut and paste from fs/9p/xattr_user.c with the namespaces changed. It has the intended effect in superficial testing. I do not know much detail about how these namespaces are used, but passing them through to the server, which can decide whether to handle them or not, seems reasonable. I want to support a use case where an ext4 file system is mounted via 9P, then re-exported via samba to windows clients in a cluster. Windows wants to store xattrs such as security.NTACL. This works when ext4 directly backs samba, but not when 9P is inserted. This use case is documented here: http://code.google.com/p/diod/issues/detail?id=95 Signed-off-by: Jim Garlick <garlick@llnl.gov> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Diffstat (limited to 'fs/9p/Kconfig')
-rw-r--r--fs/9p/Kconfig13
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/9p/Kconfig b/fs/9p/Kconfig
index 55abfd62654a..6489e1fc1afd 100644
--- a/fs/9p/Kconfig
+++ b/fs/9p/Kconfig
@@ -31,3 +31,16 @@ config 9P_FS_POSIX_ACL
If you don't know what Access Control Lists are, say N
endif
+
+
+config 9P_FS_SECURITY
+ bool "9P Security Labels"
+ depends on 9P_FS
+ help
+ Security labels support alternative access control models
+ implemented by security modules like SELinux. This option
+ enables an extended attribute handler for file security
+ labels in the 9P filesystem.
+
+ If you are not using a security module that requires using
+ extended attributes for file security labels, say N.