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authorBenny Halevy <bhalevy@panasas.com>2009-04-03 08:28:08 +0300
committerJ. Bruce Fields <bfields@citi.umich.edu>2009-04-03 17:41:16 -0700
commitb85d4c01b76f6969a085d07a767fa45225cb14be (patch)
tree5441d0f6bcec52fab3b81ad4887239ff784c5ad9 /fs/nfsd/nfs4xdr.c
parenta1bcecd29cdf1670df6908a620add4211c0abb7a (diff)
nfsd41: sequence operation
Implement the sequence operation conforming to http://tools.ietf.org/html/draft-ietf-nfsv4-minorversion1-26 Check for stale clientid (as derived from the sessionid). Enforce slotid range and exactly-once semantics using the slotid and seqid. If everything went well renew the client lease and mark the slot INPROGRESS. Add a struct nfsd4_slot pointer to struct nfsd4_compound_state. To be used for sessions DRC replay. [nfsd41: rename sequence catchthis to cachethis] Signed-off-by: Andy Adamson<andros@netapp.com> [pulled some code to set cstate->slot from "nfsd DRC logic"] [use sessionid_lock spin lock] [nfsd41: use bool inuse for slot state] Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd: add a struct nfsd4_slot pointer to struct nfsd4_compound_state] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [nfsd41: add nfsd4_session pointer to nfsd4_compound_state] [nfsd41: set cstate session] [nfsd41: use cstate session in nfsd4_sequence] Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> [simplify nfsd4_encode_sequence error handling] Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'fs/nfsd/nfs4xdr.c')
-rw-r--r--fs/nfsd/nfs4xdr.c33
1 files changed, 30 insertions, 3 deletions
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index bebf6d24906..8556575480c 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -1113,7 +1113,16 @@ static __be32
nfsd4_decode_sequence(struct nfsd4_compoundargs *argp,
struct nfsd4_sequence *seq)
{
- return nfserr_opnotsupp; /* stub */
+ DECODE_HEAD;
+
+ READ_BUF(NFS4_MAX_SESSIONID_LEN + 16);
+ COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN);
+ READ32(seq->seqid);
+ READ32(seq->slotid);
+ READ32(seq->maxslots);
+ READ32(seq->cachethis);
+
+ DECODE_TAIL;
}
static __be32
@@ -2828,8 +2837,26 @@ static __be32
nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr,
struct nfsd4_sequence *seq)
{
- /* stub */
- return nfserr;
+ ENCODE_HEAD;
+
+ if (nfserr)
+ return nfserr;
+
+ RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20);
+ WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN);
+ WRITE32(seq->seqid);
+ WRITE32(seq->slotid);
+ WRITE32(seq->maxslots);
+ /*
+ * FIXME: for now:
+ * target_maxslots = maxslots
+ * status_flags = 0
+ */
+ WRITE32(seq->maxslots);
+ WRITE32(0);
+
+ ADJUST_ARGS();
+ return 0;
}
static __be32