#include <linux/kthread.h>
#include <linux/module.h>
#include <linux/random.h>
+#include <linux/ratelimit.h>
#include <linux/workqueue.h>
#include <linux/bitops.h>
* that is compatible with current->files
*/
static struct nfs4_lock_state *
-__nfs4_find_lock_state(struct nfs4_state *state, fl_owner_t fl_owner)
+__nfs4_find_lock_state(struct nfs4_state *state, fl_owner_t fl_owner, pid_t fl_pid, unsigned int type)
{
struct nfs4_lock_state *pos;
list_for_each_entry(pos, &state->lock_states, ls_locks) {
- if (pos->ls_owner != fl_owner)
+ if (type != NFS4_ANY_LOCK_TYPE && pos->ls_owner.lo_type != type)
continue;
+ switch (pos->ls_owner.lo_type) {
+ case NFS4_POSIX_LOCK_TYPE:
+ if (pos->ls_owner.lo_u.posix_owner != fl_owner)
+ continue;
+ break;
+ case NFS4_FLOCK_LOCK_TYPE:
+ if (pos->ls_owner.lo_u.flock_owner != fl_pid)
+ continue;
+ }
atomic_inc(&pos->ls_count);
return pos;
}
* exists, return an uninitialized one.
*
*/
-static struct nfs4_lock_state *nfs4_alloc_lock_state(struct nfs4_state *state, fl_owner_t fl_owner)
+static struct nfs4_lock_state *nfs4_alloc_lock_state(struct nfs4_state *state, fl_owner_t fl_owner, pid_t fl_pid, unsigned int type)
{
struct nfs4_lock_state *lsp;
struct nfs_client *clp = state->owner->so_server->nfs_client;
lsp->ls_seqid.sequence = &lsp->ls_sequence;
atomic_set(&lsp->ls_count, 1);
lsp->ls_state = state;
- lsp->ls_owner = fl_owner;
+ lsp->ls_owner.lo_type = type;
+ switch (lsp->ls_owner.lo_type) {
+ case NFS4_FLOCK_LOCK_TYPE:
+ lsp->ls_owner.lo_u.flock_owner = fl_pid;
+ break;
+ case NFS4_POSIX_LOCK_TYPE:
+ lsp->ls_owner.lo_u.posix_owner = fl_owner;
+ break;
+ default:
+ kfree(lsp);
+ return NULL;
+ }
spin_lock(&clp->cl_lock);
nfs_alloc_unique_id(&clp->cl_lockowner_id, &lsp->ls_id, 1, 64);
spin_unlock(&clp->cl_lock);
* exists, return an uninitialized one.
*
*/
-static struct nfs4_lock_state *nfs4_get_lock_state(struct nfs4_state *state, fl_owner_t owner)
+static struct nfs4_lock_state *nfs4_get_lock_state(struct nfs4_state *state, fl_owner_t owner, pid_t pid, unsigned int type)
{
struct nfs4_lock_state *lsp, *new = NULL;
for(;;) {
spin_lock(&state->state_lock);
- lsp = __nfs4_find_lock_state(state, owner);
+ lsp = __nfs4_find_lock_state(state, owner, pid, type);
if (lsp != NULL)
break;
if (new != NULL) {
break;
}
spin_unlock(&state->state_lock);
- new = nfs4_alloc_lock_state(state, owner);
+ new = nfs4_alloc_lock_state(state, owner, pid, type);
if (new == NULL)
return NULL;
}
if (fl->fl_ops != NULL)
return 0;
- lsp = nfs4_get_lock_state(state, fl->fl_owner);
+ if (fl->fl_flags & FL_POSIX)
+ lsp = nfs4_get_lock_state(state, fl->fl_owner, 0, NFS4_POSIX_LOCK_TYPE);
+ else if (fl->fl_flags & FL_FLOCK)
+ lsp = nfs4_get_lock_state(state, 0, fl->fl_pid, NFS4_FLOCK_LOCK_TYPE);
+ else
+ return -EINVAL;
if (lsp == NULL)
return -ENOMEM;
fl->fl_u.nfs4_fl.owner = lsp;
* Byte-range lock aware utility to initialize the stateid of read/write
* requests.
*/
-void nfs4_copy_stateid(nfs4_stateid *dst, struct nfs4_state *state, fl_owner_t fl_owner)
+void nfs4_copy_stateid(nfs4_stateid *dst, struct nfs4_state *state, fl_owner_t fl_owner, pid_t fl_pid)
{
struct nfs4_lock_state *lsp;
int seq;
return;
spin_lock(&state->state_lock);
- lsp = __nfs4_find_lock_state(state, fl_owner);
+ lsp = __nfs4_find_lock_state(state, fl_owner, fl_pid, NFS4_ANY_LOCK_TYPE);
if (lsp != NULL && (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0)
memcpy(dst, &lsp->ls_stateid, sizeof(*dst));
spin_unlock(&state->state_lock);
/* Mark the file as being 'closed' */
state->state = 0;
break;
+ case -EKEYEXPIRED:
+ /*
+ * User RPCSEC_GSS context has expired.
+ * We cannot recover this stateid now, so
+ * skip it and allow recovery thread to
+ * proceed.
+ */
+ break;
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_BAD_STATEID:
(void)ops->reclaim_complete(clp);
}
-static void nfs4_state_end_reclaim_reboot(struct nfs_client *clp)
+static int nfs4_state_clear_reclaim_reboot(struct nfs_client *clp)
{
struct nfs4_state_owner *sp;
struct rb_node *pos;
struct nfs4_state *state;
if (!test_and_clear_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state))
- return;
-
- nfs4_reclaim_complete(clp, clp->cl_mvops->reboot_recovery_ops);
+ return 0;
for (pos = rb_first(&clp->cl_state_owners); pos != NULL; pos = rb_next(pos)) {
sp = rb_entry(pos, struct nfs4_state_owner, so_client_node);
}
nfs_delegation_reap_unclaimed(clp);
+ return 1;
+}
+
+static void nfs4_state_end_reclaim_reboot(struct nfs_client *clp)
+{
+ if (!nfs4_state_clear_reclaim_reboot(clp))
+ return;
+ nfs4_reclaim_complete(clp, clp->cl_mvops->reboot_recovery_ops);
}
static void nfs_delegation_clear_all(struct nfs_client *clp)
nfs4_state_mark_reclaim_helper(clp, nfs4_state_mark_reclaim_nograce);
}
+static void nfs4_warn_keyexpired(const char *s)
+{
+ printk_ratelimited(KERN_WARNING "Error: state manager"
+ " encountered RPCSEC_GSS session"
+ " expired against NFSv4 server %s.\n",
+ s);
+}
+
static int nfs4_recovery_handle_error(struct nfs_client *clp, int error)
{
switch (error) {
case -NFS4ERR_STALE_CLIENTID:
case -NFS4ERR_LEASE_MOVED:
set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
- nfs4_state_end_reclaim_reboot(clp);
+ nfs4_state_clear_reclaim_reboot(clp);
nfs4_state_start_reclaim_reboot(clp);
break;
case -NFS4ERR_EXPIRED:
set_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state);
/* Zero session reset errors */
return 0;
+ case -EKEYEXPIRED:
+ /* Nothing we can do */
+ nfs4_warn_keyexpired(clp->cl_hostname);
+ return 0;
}
return error;
}
case -NFS4ERR_DELAY:
case -NFS4ERR_CLID_INUSE:
case -EAGAIN:
- case -EKEYEXPIRED:
break;
+ case -EKEYEXPIRED:
+ nfs4_warn_keyexpired(clp->cl_hostname);
case -NFS4ERR_NOT_SAME: /* FixMe: implement recovery
* in nfs4_exchange_id */
default:
git://bbs.cooldavid.org / net-next-2.6.git / blobdiff