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authorTrond Myklebust <Trond.Myklebust@netapp.com>2012-03-04 18:13:56 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2012-03-06 10:32:44 -0500
commit36281caa839f4441c793c81d2e3cc5ea44ad5aa2 (patch)
treebe5471741713d77681fcf1e161b0748343748977
parent8e663f0e5fabf57065aed1cfdaff5b13057dce23 (diff)
downloadlinux-stericsson-36281caa839f4441c793c81d2e3cc5ea44ad5aa2.tar.gz
NFSv4: Further clean-ups of delegation stateid validation
Change the name to reflect what we're really doing: testing two stateids for whether or not they match according the the rules in RFC3530 and RFC5661. Move the code from callback_proc.c to nfs4proc.c Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
-rw-r--r--fs/nfs/callback_proc.c24
-rw-r--r--fs/nfs/delegation.c2
-rw-r--r--fs/nfs/nfs4_fs.h2
-rw-r--r--fs/nfs/nfs4proc.c27
4 files changed, 27 insertions, 28 deletions
diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c
index ea8321923f28..1b5d809a105e 100644
--- a/fs/nfs/callback_proc.c
+++ b/fs/nfs/callback_proc.c
@@ -98,14 +98,6 @@ out:
return res;
}
-int nfs4_validate_delegation_stateid(struct nfs_delegation *delegation, const nfs4_stateid *stateid)
-{
- if (delegation == NULL || memcmp(delegation->stateid.data, stateid->data,
- sizeof(delegation->stateid.data)) != 0)
- return 0;
- return 1;
-}
-
#if defined(CONFIG_NFS_V4_1)
/*
@@ -319,22 +311,6 @@ out:
return res;
}
-int nfs41_validate_delegation_stateid(struct nfs_delegation *delegation, const nfs4_stateid *stateid)
-{
- if (delegation == NULL)
- return 0;
-
- if (stateid->stateid.seqid != 0 &&
- stateid->stateid.seqid != delegation->stateid.stateid.seqid)
- return 0;
- if (memcmp(delegation->stateid.stateid.other,
- stateid->stateid.other,
- NFS4_STATEID_OTHER_SIZE))
- return 0;
-
- return 1;
-}
-
/*
* Validate the sequenceID sent by the server.
* Return success if the sequenceID is one more than what we last saw on
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index c14512cea798..c7249e26e2e9 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -556,7 +556,7 @@ int nfs_async_inode_return_delegation(struct inode *inode,
rcu_read_lock();
delegation = rcu_dereference(NFS_I(inode)->delegation);
- if (!clp->cl_mvops->validate_stateid(delegation, stateid)) {
+ if (!clp->cl_mvops->match_stateid(&delegation->stateid, stateid)) {
rcu_read_unlock();
return -ENOENT;
}
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 7ddad3fa4074..624d4becf017 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -43,7 +43,7 @@ struct nfs4_minor_version_ops {
struct nfs4_sequence_args *args,
struct nfs4_sequence_res *res,
int cache_reply);
- int (*validate_stateid)(struct nfs_delegation *,
+ bool (*match_stateid)(const nfs4_stateid *,
const nfs4_stateid *);
int (*find_root_sec)(struct nfs_server *, struct nfs_fh *,
struct nfs_fsinfo *);
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index f31fcea1af7e..b0647b387403 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -6271,8 +6271,31 @@ static int nfs41_free_stateid(struct nfs_server *server, nfs4_stateid *stateid)
} while (exception.retry);
return err;
}
+
+static bool nfs41_match_stateid(const nfs4_stateid *s1,
+ const nfs4_stateid *s2)
+{
+ if (memcmp(s1->stateid.other, s2->stateid.other,
+ sizeof(s1->stateid.other)) != 0)
+ return false;
+
+ if (s1->stateid.seqid == s2->stateid.seqid)
+ return true;
+ if (s1->stateid.seqid == 0 || s2->stateid.seqid == 0)
+ return true;
+
+ return false;
+}
+
#endif /* CONFIG_NFS_V4_1 */
+static bool nfs4_match_stateid(const nfs4_stateid *s1,
+ const nfs4_stateid *s2)
+{
+ return memcmp(s1->data, s2->data, sizeof(s1->data)) == 0;
+}
+
+
struct nfs4_state_recovery_ops nfs40_reboot_recovery_ops = {
.owner_flag_bit = NFS_OWNER_RECLAIM_REBOOT,
.state_flag_bit = NFS_STATE_RECLAIM_REBOOT,
@@ -6331,7 +6354,7 @@ struct nfs4_state_maintenance_ops nfs41_state_renewal_ops = {
static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = {
.minor_version = 0,
.call_sync = _nfs4_call_sync,
- .validate_stateid = nfs4_validate_delegation_stateid,
+ .match_stateid = nfs4_match_stateid,
.find_root_sec = nfs4_find_root_sec,
.reboot_recovery_ops = &nfs40_reboot_recovery_ops,
.nograce_recovery_ops = &nfs40_nograce_recovery_ops,
@@ -6342,7 +6365,7 @@ static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = {
static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = {
.minor_version = 1,
.call_sync = _nfs4_call_sync_session,
- .validate_stateid = nfs41_validate_delegation_stateid,
+ .match_stateid = nfs41_match_stateid,
.find_root_sec = nfs41_find_root_sec,
.reboot_recovery_ops = &nfs41_reboot_recovery_ops,
.nograce_recovery_ops = &nfs41_nograce_recovery_ops,