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NFSD: Added TEST_STATEID operation

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This operation is used by the client to check the validity of a list of
stateids.

Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Bryan Schumaker
2011-07-13 10:50:48 -04:00
committed by J. Bruce Fields
parent e1ca12dfb1
commit 1745680454
5 changed files with 145 additions and 3 deletions
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38
fs/nfsd/nfs4state.c
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@@ -37,6 +37,7 @@
#include <linux/slab.h>
#include <linux/namei.h>
#include <linux/swap.h>
#include <linux/pagemap.h>
#include <linux/sunrpc/svcauth_gss.h>
#include <linux/sunrpc/clnt.h>
#include "xdr4.h"
@@ -3145,6 +3146,32 @@ static int is_open_stateid(struct nfs4_stateid *stateid)
return stateid->st_openstp == NULL;
}
__be32 nfs4_validate_stateid(stateid_t *stateid, int flags)
{
struct nfs4_stateid *stp = NULL;
__be32 status = nfserr_stale_stateid;
if (STALE_STATEID(stateid))
goto out;
status = nfserr_expired;
stp = search_for_stateid(stateid);
if (!stp)
goto out;
status = nfserr_bad_stateid;
if (!stp->st_stateowner->so_confirmed)
goto out;
status = check_stateid_generation(stateid, &stp->st_stateid, flags);
if (status)
goto out;
status = nfs_ok;
out:
return status;
}
/*
* Checks for stateid operations
*/
@@ -3242,6 +3269,17 @@ nfsd4_free_lock_stateid(struct nfs4_stateid *stp)
return nfs_ok;
}
/*
* Test if the stateid is valid
*/
__be32
nfsd4_test_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_test_stateid *test_stateid)
{
test_stateid->ts_has_session = nfsd4_has_session(cstate);
return nfs_ok;
}
/*
* Free a state id
*/