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nfs4.1: Minimal SP4_MACH_CRED implementation

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This is a minimal client side implementation of SP4_MACH_CRED.  It will
attempt to negotiate SP4_MACH_CRED iff the EXCHANGE_ID is using
krb5i or krb5p auth.  SP4_MACH_CRED will be used if the server supports the
minimal operations:

 BIND_CONN_TO_SESSION
 EXCHANGE_ID
 CREATE_SESSION
 DESTROY_SESSION
 DESTROY_CLIENTID

This patch only includes the EXCHANGE_ID negotiation code because
the client will already use the machine cred for these operations.

If the server doesn't support SP4_MACH_CRED or doesn't support the minimal
operations, the exchange id will be resent with SP4_NONE.

Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Weston Andros Adamson 2013-08-13 16:37:32 -04:00 • committed by Trond Myklebust
parent 92cb6c5be8
commit 2031cd1af1
4 changed files with 213 additions and 19 deletions
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19
include/linux/nfs_xdr.h
View file

@ -1107,6 +1107,23 @@ struct pnfs_ds_commit_info {
struct pnfs_commit_bucket *buckets;
};
#define NFS4_OP_MAP_NUM_LONGS \
DIV_ROUND_UP(LAST_NFS4_OP, 8 * sizeof(unsigned long))
#define NFS4_OP_MAP_NUM_WORDS \
(NFS4_OP_MAP_NUM_LONGS * sizeof(unsigned long) / sizeof(u32))
struct nfs4_op_map {
union {
unsigned long longs[NFS4_OP_MAP_NUM_LONGS];
u32 words[NFS4_OP_MAP_NUM_WORDS];
} u;
};
struct nfs41_state_protection {
u32 how;
struct nfs4_op_map enforce;
struct nfs4_op_map allow;
};
#define NFS4_EXCHANGE_ID_LEN (48)
struct nfs41_exchange_id_args {
struct nfs_client *client;
@ -1114,6 +1131,7 @@ struct nfs41_exchange_id_args {
unsigned int id_len;
char id[NFS4_EXCHANGE_ID_LEN];
u32 flags;
struct nfs41_state_protection state_protect;
};
struct nfs41_server_owner {
@ -1146,6 +1164,7 @@ struct nfs41_exchange_id_res {
struct nfs41_server_owner *server_owner;
struct nfs41_server_scope *server_scope;
struct nfs41_impl_id *impl_id;
struct nfs41_state_protection state_protect;
};
struct nfs41_create_session_args {