linux-toradex.git/net/sunrpc/auth_generic.c, branch v4.1

sunrpc: eliminate RPC_DEBUG

2014-11-24T22:31:46+00:00

It's always set to whatever CONFIG_SUNRPC_DEBUG is, so just use that.

Signed-off-by: Jeff Layton 
Signed-off-by: Trond Myklebust

sunrpc/auth: allow lockless (rcu) lookup of credential cache.

2014-08-03T21:14:12+00:00

The new flag RPCAUTH_LOOKUP_RCU to credential lookup avoids locking,
does not take a reference on the returned credential, and returns
-ECHILD if a simple lookup was not possible.

The returned value can only be used within an rcu_read_lock protected
region.

The main user of this is the new rpc_lookup_cred_nonblock() which
returns a pointer to the current credential which is only rcu-safe (no
ref-count held), and might return -ECHILD if allocation was required.

Signed-off-by: NeilBrown 
Signed-off-by: Trond Myklebust

sunrpc: Add missing kuids conversion for printing

2013-09-12T14:16:06+00:00

m68k/allmodconfig:

net/sunrpc/auth_generic.c: In function ‘generic_key_timeout’:
net/sunrpc/auth_generic.c:241: warning: format ‘%d’ expects type ‘int’, but
argument 2 has type ‘kuid_t’

commit cdba321e291f0fbf5abda4d88340292b858e3d4d ("sunrpc: Convert kuids and
kgids to uids and gids for printing") forgot to convert one instance.

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Trond Myklebust

SUNRPC new rpc_credops to test credential expiry

2013-09-03T19:25:08+00:00

This patch provides the RPC layer helper functions to allow NFS to manage
data in the face of expired credentials - such as avoiding buffered WRITEs
and COMMITs when the gss context will expire before the WRITEs are flushed
and COMMITs are sent.

These helper functions enable checking the expiration of an underlying
credential key for a generic rpc credential, e.g. the gss_cred gss context
gc_expiry which for Kerberos is set to the remaining TGT lifetime.

A new rpc_authops key_timeout is only defined for the generic auth.
A new rpc_credops crkey_to_expire is only defined for the generic cred.
A new rpc_credops crkey_timeout is only defined for the gss cred.

Set a credential key expiry watermark, RPC_KEY_EXPIRE_TIMEO set to 240 seconds
as a default and can be set via a module parameter as we need to ensure there
is time for any dirty data to be flushed.

If key_timeout is called on a credential with an underlying credential key that
will expire within watermark seconds, we set the RPC_CRED_KEY_EXPIRE_SOON
flag in the generic_cred acred so that the NFS layer can clean up prior to
key expiration.

Checking a generic credential's underlying credential involves a cred lookup.
To avoid this lookup in the normal case when the underlying credential has
a key that is valid (before the watermark), a notify flag is set in
the generic credential the first time the key_timeout is called. The
generic credential then stops checking the underlying credential key expiry, and
the underlying credential (gss_cred) match routine then checks the key
expiration upon each normal use and sets a flag in the associated generic
credential only when the key expiration is within the watermark.
This in turn signals the generic credential key_timeout to perform the extra
credential lookup thereafter.

Signed-off-by: Andy Adamson 
Signed-off-by: Trond Myklebust

sunrpc: Convert kuids and kgids to uids and gids for printing

2013-02-13T14:15:19+00:00

When printing kuids and kgids for debugging purpropses convert them
to ordinary integers so their values can be fed to the oridnary
print functions.

Cc: "J. Bruce Fields" 
Cc: Trond Myklebust 
Signed-off-by: "Eric W. Biederman"

sunrpc: Use uid_eq and gid_eq where appropriate

2013-02-13T14:15:17+00:00

When comparing uids use uid_eq instead of ==.
When comparing gids use gid_eq instead of ==.

And unfortunate cost of type safety.

Cc: "J. Bruce Fields" 
Cc: Trond Myklebust 
Signed-off-by: "Eric W. Biederman"

sunrpc: Use userns friendly constants.

2013-02-13T14:15:15+00:00

Instead of (uid_t)0 use GLOBAL_ROOT_UID.
Instead of (gid_t)0 use GLOBAL_ROOT_GID.
Instead of (uid_t)-1 use INVALID_UID
Instead of (gid_t)-1 use INVALID_GID.
Instead of NOGROUP use INVALID_GID.

Cc: "J. Bruce Fields" 
Cc: Trond Myklebust 
Signed-off-by: "Eric W. Biederman"

userns: Convert group_info values from gid_t to kgid_t.

2012-05-03T10:27:21+00:00

As a first step to converting struct cred to be all kuid_t and kgid_t
values convert the group values stored in group_info to always be
kgid_t values.   Unless user namespaces are used this change should
have no effect.

Acked-by: Serge Hallyn 
Signed-off-by: Eric W. Biederman

SUNRPC: Fix machine creds in generic_create_cred and generic_match

2012-01-23T22:03:46+00:00

- generic_create_cred needs to copy the '.principal' field.
- generic_match needs to ignore the groups and match on the '.principal'
  field.

This fixes an Oops that was introduced by commit 68c9715 (SUNRPC:
Clean up the RPCSEC_GSS service ticket requests)

Reported-by: J. Bruce Fields 
Signed-off-by: Trond Myklebust 
Tested-by: J. Bruce Fields

SUNRPC: Clean up the RPCSEC_GSS service ticket requests

2012-01-05T15:42:38+00:00

Instead of hacking specific service names into gss_encode_v1_msg, we should
just allow the caller to specify the service name explicitly.

Signed-off-by: Trond Myklebust 
Acked-by: J. Bruce Fields