Commit Graph

12 Commits

Author SHA1 Message Date
Ilya Dryomov d7d5a007b1 libceph: fix sparse endianness warnings
The only real issue is the one in auth_x.c and it came with
3.19-rc1 merge.

Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
2015-01-08 20:36:57 +03:00
Yan, Zheng 33d0733796 libceph: message signature support
Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-12-17 20:09:50 +03:00
Yan, Zheng ae385eaf24 libceph: store session key in cephx authorizer
Session key is required when calculating message signature. Save the session
key in authorizer, this avoid lookup ticket handler for each message

Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-12-17 20:09:50 +03:00
Ilya Dryomov e9226d7c9f libceph: eliminate unnecessary allocation in process_one_ticket()
Commit c27a3e4d66 ("libceph: do not hard code max auth ticket len")
while fixing a buffer overlow tried to keep the same as much of the
surrounding code as possible and introduced an unnecessary kmalloc() in
the unencrypted ticket path.  It is likely to fail on huge tickets, so
get rid of it.

Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
2014-10-31 23:43:08 +03:00
Ilya Dryomov c27a3e4d66 libceph: do not hard code max auth ticket len
We hard code cephx auth ticket buffer size to 256 bytes.  This isn't
enough for any moderate setups and, in case tickets themselves are not
encrypted, leads to buffer overflows (ceph_x_decrypt() errors out, but
ceph_decode_copy() doesn't - it's just a memcpy() wrapper).  Since the
buffer is allocated dynamically anyway, allocated it a bit later, at
the point where we know how much is going to be needed.

Fixes: http://tracker.ceph.com/issues/8979

Cc: stable@vger.kernel.org
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Sage Weil <sage@redhat.com>
2014-09-10 20:08:36 +04:00
Ilya Dryomov 597cda3577 libceph: add process_one_ticket() helper
Add a helper for processing individual cephx auth tickets.  Needed for
the next commit, which deals with allocating ticket buffers.  (Most of
the diff here is whitespace - view with git diff -b).

Cc: stable@vger.kernel.org
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Sage Weil <sage@redhat.com>
2014-09-10 20:08:35 +04:00
Sage Weil 27859f9773 libceph: wrap auth ops in wrapper functions
Use wrapper functions that check whether the auth op exists so that callers
do not need a bunch of conditional checks.  Simplifies the external
interface.

Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>
2013-05-01 21:17:14 -07:00
Sage Weil 0bed9b5c52 libceph: add update_authorizer auth method
Currently the messenger calls out to a get_authorizer con op, which will
create a new authorizer if it doesn't yet have one.  In the meantime, when
we rotate our service keys, the authorizer doesn't get updated.  Eventually
it will be rejected by the server on a new connection attempt and get
invalidated, and we will then rebuild a new authorizer, but this is not
ideal.

Instead, if we do have an authorizer, call a new update_authorizer op that
will verify that the current authorizer is using the latest secret.  If it
is not, we will build a new one that does.  This avoids the transient
failure.

This fixes one of the sorry sequence of events for bug

	http://tracker.ceph.com/issues/4282

Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>
2013-05-01 21:17:13 -07:00
Sage Weil 4b8e8b5d78 libceph: fix authorizer invalidation
We were invalidating the authorizer by removing the ticket handler
entirely.  This was effective in inducing us to request a new authorizer,
but in the meantime it mean that any authorizer we generated would get a
new and initialized handler with secret_id=0, which would always be
rejected by the server side with a confusing error message:

 auth: could not find secret_id=0
 cephx: verify_authorizer could not get service secret for service osd secret_id=0

Instead, simply clear the validity field.  This will still induce the auth
code to request a new secret, but will let us continue to use the old
ticket in the meantime.  The messenger code will probably continue to fail,
but the exponential backoff will kick in, and eventually the we will get a
new (hopefully more valid) ticket from the mon and be able to continue.

Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>
2013-05-01 21:17:12 -07:00
Alex Elder 74f1869f76 ceph: messenger: reduce args to create_authorizer
Make use of the new ceph_auth_handshake structure in order to reduce
the number of arguments passed to the create_authorizor method in
ceph_auth_client_ops.  Use a local variable of that type as a
shorthand in the get_authorizer method definitions.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Sage Weil <sage@inktank.com>
2012-05-17 08:18:12 -05:00
Tommi Virtanen 8323c3aa74 ceph: Move secret key parsing earlier.
This makes the base64 logic be contained in mount option parsing,
and prepares us for replacing the homebew key management with the
kernel key retention service.

Signed-off-by: Tommi Virtanen <tommi.virtanen@dreamhost.com>
Signed-off-by: Sage Weil <sage@newdream.net>
2011-03-29 12:11:16 -07:00
Yehuda Sadeh 3d14c5d2b6 ceph: factor out libceph from Ceph file system
This factors out protocol and low-level storage parts of ceph into a
separate libceph module living in net/ceph and include/linux/ceph.  This
is mostly a matter of moving files around.  However, a few key pieces
of the interface change as well:

 - ceph_client becomes ceph_fs_client and ceph_client, where the latter
   captures the mon and osd clients, and the fs_client gets the mds client
   and file system specific pieces.
 - Mount option parsing and debugfs setup is correspondingly broken into
   two pieces.
 - The mon client gets a generic handler callback for otherwise unknown
   messages (mds map, in this case).
 - The basic supported/required feature bits can be expanded (and are by
   ceph_fs_client).

No functional change, aside from some subtle error handling cases that got
cleaned up in the refactoring process.

Signed-off-by: Sage Weil <sage@newdream.net>
2010-10-20 15:37:28 -07:00