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authorBryan Schumaker <bjschuma@netapp.com>2012-01-27 10:22:49 -0500
committerJ. Bruce Fields <bfields@redhat.com>2012-02-17 18:38:52 -0500
commit03cfb42025a16dc45195dbdd6d368daaa8367429 (patch)
tree5c1fbae03c905fb22b40f53d04e7616e413a0b3d /fs/nfsd
parentde5b8e8e047534aac6bc9803f96e7257436aef9c (diff)
NFSD: Clean up the test_stateid function
When I initially wrote it, I didn't understand how lists worked so I wrote something that didn't use them. I think making a list of stateids to test is a more straightforward implementation, especially compared to especially compared to decoding stateids while simultaneously encoding a reply to the client. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/nfs4state.c9
-rw-r--r--fs/nfsd/nfs4xdr.c66
-rw-r--r--fs/nfsd/xdr4.h9
3 files changed, 35 insertions, 49 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 45966a436b0..f1b74a74ec4 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -3402,7 +3402,14 @@ __be32
nfsd4_test_stateid(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_test_stateid *test_stateid)
{
- /* real work is done during encoding */
+ struct nfsd4_test_stateid_id *stateid;
+ struct nfs4_client *cl = cstate->session->se_client;
+
+ nfs4_lock_state();
+ list_for_each_entry(stateid, &test_stateid->ts_stateid_list, ts_id_list)
+ stateid->ts_id_status = nfs4_validate_stateid(cl, &stateid->ts_id_stateid);
+ nfs4_unlock_state();
+
return nfs_ok;
}
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index d241a8571dd..a58f2064f47 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -133,22 +133,6 @@ xdr_error: \
} \
} while (0)
-static void save_buf(struct nfsd4_compoundargs *argp, struct nfsd4_saved_compoundargs *savep)
-{
- savep->p = argp->p;
- savep->end = argp->end;
- savep->pagelen = argp->pagelen;
- savep->pagelist = argp->pagelist;
-}
-
-static void restore_buf(struct nfsd4_compoundargs *argp, struct nfsd4_saved_compoundargs *savep)
-{
- argp->p = savep->p;
- argp->end = savep->end;
- argp->pagelen = savep->pagelen;
- argp->pagelist = savep->pagelist;
-}
-
static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes)
{
/* We want more bytes than seem to be available.
@@ -1396,26 +1380,29 @@ nfsd4_decode_sequence(struct nfsd4_compoundargs *argp,
static __be32
nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid)
{
- unsigned int nbytes;
- stateid_t si;
int i;
- __be32 *p;
- __be32 status;
+ __be32 *p, status;
+ struct nfsd4_test_stateid_id *stateid;
READ_BUF(4);
test_stateid->ts_num_ids = ntohl(*p++);
- nbytes = test_stateid->ts_num_ids * sizeof(stateid_t);
- if (nbytes > (u32)((char *)argp->end - (char *)argp->p))
- goto xdr_error;
-
- test_stateid->ts_saved_args = argp;
- save_buf(argp, &test_stateid->ts_savedp);
+ INIT_LIST_HEAD(&test_stateid->ts_stateid_list);
for (i = 0; i < test_stateid->ts_num_ids; i++) {
- status = nfsd4_decode_stateid(argp, &si);
+ stateid = kmalloc(sizeof(struct nfsd4_test_stateid_id), GFP_KERNEL);
+ if (!stateid) {
+ status = PTR_ERR(stateid);
+ goto out;
+ }
+
+ defer_free(argp, kfree, stateid);
+ INIT_LIST_HEAD(&stateid->ts_id_list);
+ list_add_tail(&stateid->ts_id_list, &test_stateid->ts_stateid_list);
+
+ status = nfsd4_decode_stateid(argp, &stateid->ts_id_stateid);
if (status)
- return status;
+ goto out;
}
status = 0;
@@ -3402,30 +3389,17 @@ __be32
nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, int nfserr,
struct nfsd4_test_stateid *test_stateid)
{
- struct nfsd4_compoundargs *argp;
- struct nfs4_client *cl = resp->cstate.session->se_client;
- stateid_t si;
+ struct nfsd4_test_stateid_id *stateid, *next;
__be32 *p;
- int i;
- int valid;
- restore_buf(test_stateid->ts_saved_args, &test_stateid->ts_savedp);
- argp = test_stateid->ts_saved_args;
-
- RESERVE_SPACE(4);
+ RESERVE_SPACE(4 + (4 * test_stateid->ts_num_ids));
*p++ = htonl(test_stateid->ts_num_ids);
- resp->p = p;
- nfs4_lock_state();
- for (i = 0; i < test_stateid->ts_num_ids; i++) {
- nfsd4_decode_stateid(argp, &si);
- valid = nfs4_validate_stateid(cl, &si);
- RESERVE_SPACE(4);
- *p++ = htonl(valid);
- resp->p = p;
+ list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) {
+ *p++ = htonl(stateid->ts_id_status);
}
- nfs4_unlock_state();
+ ADJUST_ARGS();
return nfserr;
}
diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
index 4949832fd74..7110a082275 100644
--- a/fs/nfsd/xdr4.h
+++ b/fs/nfsd/xdr4.h
@@ -356,10 +356,15 @@ struct nfsd4_saved_compoundargs {
struct page **pagelist;
};
+struct nfsd4_test_stateid_id {
+ __be32 ts_id_status;
+ stateid_t ts_id_stateid;
+ struct list_head ts_id_list;
+};
+
struct nfsd4_test_stateid {
__be32 ts_num_ids;
- struct nfsd4_compoundargs *ts_saved_args;
- struct nfsd4_saved_compoundargs ts_savedp;
+ struct list_head ts_stateid_list;
};
struct nfsd4_free_stateid {