tree e09c056c9888410aea680deda092ca9b85fc77e2
parent cd7bec6ad80188394a8ea857ff1aa3512fc2282a
author James Morris <jmorris@namei.org> 1263422008 +1100
committer James Morris <jmorris@namei.org> 1263504237 +1100

security: correct error returns for get/set security with private inodes

Currently, the getsecurity and setsecurity operations return zero for
kernel private inodes, where xattrs are not available directly to
userspace.

This confuses some applications, and does not conform to the
man page for getxattr(2) etc., which state that these syscalls
should return ENOTSUP if xattrs are not supported or disabled.

Note that in the listsecurity case, we still need to return zero
as we don't know which other xattr handlers may be active.

For discussion of userland confusion, see:
http://www.mail-archive.com/bug-coreutils@gnu.org/msg17988.html

This patch corrects the error returns so that ENOTSUP is reported
to userspace as required.

Signed-off-by: James Morris <jmorris@namei.org>
Acked-by:  Stephen Smalley <sds@tycho.nsa.gov>
Acked-by: Serge Hallyn <serue@us.ibm.com>