#define NFSDBG_FACILITY NFSDBG_PROC
-#define NFS4_POLL_RETRY_MIN (1*HZ)
+#define NFS4_POLL_RETRY_MIN (HZ/10)
#define NFS4_POLL_RETRY_MAX (15*HZ)
struct nfs4_opendata;
static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *);
static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry);
static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception);
-static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs4_client *clp);
-extern u32 *nfs4_decode_dirent(u32 *p, struct nfs_entry *entry, int plus);
-extern struct rpc_procinfo nfs4_procedures[];
+static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs_client *clp);
+static int _nfs4_do_access(struct inode *inode, struct rpc_cred *cred, int openflags);
+static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
+static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr);
/* Prevent leaks of NFSv4 errors into userland */
int nfs4_map_errors(int err)
0
};
-static void nfs4_setup_readdir(u64 cookie, u32 *verifier, struct dentry *dentry,
+const u32 nfs4_fs_locations_bitmap[2] = {
+ FATTR4_WORD0_TYPE
+ | FATTR4_WORD0_CHANGE
+ | FATTR4_WORD0_SIZE
+ | FATTR4_WORD0_FSID
+ | FATTR4_WORD0_FILEID
+ | FATTR4_WORD0_FS_LOCATIONS,
+ FATTR4_WORD1_MODE
+ | FATTR4_WORD1_NUMLINKS
+ | FATTR4_WORD1_OWNER
+ | FATTR4_WORD1_OWNER_GROUP
+ | FATTR4_WORD1_RAWDEV
+ | FATTR4_WORD1_SPACE_USED
+ | FATTR4_WORD1_TIME_ACCESS
+ | FATTR4_WORD1_TIME_METADATA
+ | FATTR4_WORD1_TIME_MODIFY
+ | FATTR4_WORD1_MOUNTED_ON_FILEID
+};
+
+static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry,
struct nfs4_readdir_arg *readdir)
{
- u32 *start, *p;
+ __be32 *start, *p;
BUG_ON(readdir->count < 80);
if (cookie > 2) {
* when talking to the server, we always send cookie 0
* instead of 1 or 2.
*/
- start = p = (u32 *)kmap_atomic(*readdir->pages, KM_USER0);
+ start = p = kmap_atomic(*readdir->pages, KM_USER0);
if (cookie == 0) {
*p++ = xdr_one; /* next */
static void renew_lease(const struct nfs_server *server, unsigned long timestamp)
{
- struct nfs4_client *clp = server->nfs4_state;
+ struct nfs_client *clp = server->nfs_client;
spin_lock(&clp->cl_lock);
if (time_before(clp->cl_last_renewal,timestamp))
clp->cl_last_renewal = timestamp;
}
struct nfs4_opendata {
- atomic_t count;
+ struct kref kref;
struct nfs_openargs o_arg;
struct nfs_openres o_res;
struct nfs_open_confirmargs c_arg;
struct nfs_open_confirmres c_res;
struct nfs_fattr f_attr;
struct nfs_fattr dir_attr;
- struct dentry *dentry;
+ struct path path;
struct dentry *dir;
struct nfs4_state_owner *owner;
+ struct nfs4_state *state;
struct iattr attrs;
unsigned long timestamp;
+ unsigned int rpc_done : 1;
int rpc_status;
int cancelled;
};
-static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry,
+
+static void nfs4_init_opendata_res(struct nfs4_opendata *p)
+{
+ p->o_res.f_attr = &p->f_attr;
+ p->o_res.dir_attr = &p->dir_attr;
+ p->o_res.server = p->o_arg.server;
+ nfs_fattr_init(&p->f_attr);
+ nfs_fattr_init(&p->dir_attr);
+}
+
+static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
struct nfs4_state_owner *sp, int flags,
const struct iattr *attrs)
{
- struct dentry *parent = dget_parent(dentry);
+ struct dentry *parent = dget_parent(path->dentry);
struct inode *dir = parent->d_inode;
struct nfs_server *server = NFS_SERVER(dir);
struct nfs4_opendata *p;
p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid);
if (p->o_arg.seqid == NULL)
goto err_free;
- atomic_set(&p->count, 1);
- p->dentry = dget(dentry);
+ p->path.mnt = mntget(path->mnt);
+ p->path.dentry = dget(path->dentry);
p->dir = parent;
p->owner = sp;
atomic_inc(&sp->so_count);
p->o_arg.fh = NFS_FH(dir);
p->o_arg.open_flags = flags,
- p->o_arg.clientid = server->nfs4_state->cl_clientid;
- p->o_arg.id = sp->so_id;
- p->o_arg.name = &dentry->d_name;
+ p->o_arg.clientid = server->nfs_client->cl_clientid;
+ p->o_arg.id = sp->so_owner_id.id;
+ p->o_arg.name = &p->path.dentry->d_name;
p->o_arg.server = server;
p->o_arg.bitmask = server->attr_bitmask;
p->o_arg.claim = NFS4_OPEN_CLAIM_NULL;
- p->o_res.f_attr = &p->f_attr;
- p->o_res.dir_attr = &p->dir_attr;
- p->o_res.server = server;
- nfs_fattr_init(&p->f_attr);
- nfs_fattr_init(&p->dir_attr);
if (flags & O_EXCL) {
u32 *s = (u32 *) p->o_arg.u.verifier.data;
s[0] = jiffies;
p->c_arg.fh = &p->o_res.fh;
p->c_arg.stateid = &p->o_res.stateid;
p->c_arg.seqid = p->o_arg.seqid;
+ nfs4_init_opendata_res(p);
+ kref_init(&p->kref);
return p;
err_free:
kfree(p);
return NULL;
}
-static void nfs4_opendata_free(struct nfs4_opendata *p)
+static void nfs4_opendata_free(struct kref *kref)
{
- if (p != NULL && atomic_dec_and_test(&p->count)) {
- nfs_free_seqid(p->o_arg.seqid);
- nfs4_put_state_owner(p->owner);
- dput(p->dir);
- dput(p->dentry);
- kfree(p);
- }
+ struct nfs4_opendata *p = container_of(kref,
+ struct nfs4_opendata, kref);
+
+ nfs_free_seqid(p->o_arg.seqid);
+ if (p->state != NULL)
+ nfs4_put_open_state(p->state);
+ nfs4_put_state_owner(p->owner);
+ dput(p->dir);
+ dput(p->path.dentry);
+ mntput(p->path.mnt);
+ kfree(p);
}
-/* Helper for asynchronous RPC calls */
-static int nfs4_call_async(struct rpc_clnt *clnt,
- const struct rpc_call_ops *tk_ops, void *calldata)
+static void nfs4_opendata_put(struct nfs4_opendata *p)
{
- struct rpc_task *task;
-
- if (!(task = rpc_new_task(clnt, RPC_TASK_ASYNC, tk_ops, calldata)))
- return -ENOMEM;
- rpc_execute(task);
- return 0;
+ if (p != NULL)
+ kref_put(&p->kref, nfs4_opendata_free);
}
static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task)
return ret;
}
-static inline void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
+static int can_open_cached(struct nfs4_state *state, int mode)
+{
+ int ret = 0;
+ switch (mode & (FMODE_READ|FMODE_WRITE|O_EXCL)) {
+ case FMODE_READ:
+ ret |= test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0;
+ ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
+ break;
+ case FMODE_WRITE:
+ ret |= test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0;
+ ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
+ break;
+ case FMODE_READ|FMODE_WRITE:
+ ret |= test_bit(NFS_O_RDWR_STATE, &state->flags) != 0;
+ }
+ return ret;
+}
+
+static int can_open_delegated(struct nfs_delegation *delegation, mode_t open_flags)
+{
+ if ((delegation->type & open_flags) != open_flags)
+ return 0;
+ if (delegation->flags & NFS_DELEGATION_NEED_RECLAIM)
+ return 0;
+ return 1;
+}
+
+static void update_open_stateflags(struct nfs4_state *state, mode_t open_flags)
{
switch (open_flags) {
case FMODE_WRITE:
case FMODE_READ|FMODE_WRITE:
state->n_rdwr++;
}
+ nfs4_state_set_mode_locked(state, state->state | open_flags);
}
-static void update_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
{
- struct inode *inode = state->inode;
+ if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
+ memcpy(state->stateid.data, stateid->data, sizeof(state->stateid.data));
+ memcpy(state->open_stateid.data, stateid->data, sizeof(state->open_stateid.data));
+ switch (open_flags) {
+ case FMODE_READ:
+ set_bit(NFS_O_RDONLY_STATE, &state->flags);
+ break;
+ case FMODE_WRITE:
+ set_bit(NFS_O_WRONLY_STATE, &state->flags);
+ break;
+ case FMODE_READ|FMODE_WRITE:
+ set_bit(NFS_O_RDWR_STATE, &state->flags);
+ }
+}
+static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, int open_flags)
+{
+ write_seqlock(&state->seqlock);
+ nfs_set_open_stateid_locked(state, stateid, open_flags);
+ write_sequnlock(&state->seqlock);
+}
+
+static void update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *deleg_stateid, int open_flags)
+{
open_flags &= (FMODE_READ|FMODE_WRITE);
- /* Protect against nfs4_find_state_byowner() */
+ /*
+ * Protect the call to nfs4_state_set_mode_locked and
+ * serialise the stateid update
+ */
+ write_seqlock(&state->seqlock);
+ if (deleg_stateid != NULL) {
+ memcpy(state->stateid.data, deleg_stateid->data, sizeof(state->stateid.data));
+ set_bit(NFS_DELEGATED_STATE, &state->flags);
+ }
+ if (open_stateid != NULL)
+ nfs_set_open_stateid_locked(state, open_stateid, open_flags);
+ write_sequnlock(&state->seqlock);
spin_lock(&state->owner->so_lock);
- spin_lock(&inode->i_lock);
- memcpy(&state->stateid, stateid, sizeof(state->stateid));
update_open_stateflags(state, open_flags);
- nfs4_state_set_mode_locked(state, state->state | open_flags);
- spin_unlock(&inode->i_lock);
spin_unlock(&state->owner->so_lock);
}
+static void nfs4_return_incompatible_delegation(struct inode *inode, mode_t open_flags)
+{
+ struct nfs_delegation *delegation;
+
+ rcu_read_lock();
+ delegation = rcu_dereference(NFS_I(inode)->delegation);
+ if (delegation == NULL || (delegation->type & open_flags) == open_flags) {
+ rcu_read_unlock();
+ return;
+ }
+ rcu_read_unlock();
+ nfs_inode_return_delegation(inode);
+}
+
+static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata)
+{
+ struct nfs4_state *state = opendata->state;
+ struct nfs_inode *nfsi = NFS_I(state->inode);
+ struct nfs_delegation *delegation;
+ int open_mode = opendata->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL);
+ nfs4_stateid stateid;
+ int ret = -EAGAIN;
+
+ rcu_read_lock();
+ delegation = rcu_dereference(nfsi->delegation);
+ for (;;) {
+ if (can_open_cached(state, open_mode)) {
+ spin_lock(&state->owner->so_lock);
+ if (can_open_cached(state, open_mode)) {
+ update_open_stateflags(state, open_mode);
+ spin_unlock(&state->owner->so_lock);
+ rcu_read_unlock();
+ goto out_return_state;
+ }
+ spin_unlock(&state->owner->so_lock);
+ }
+ if (delegation == NULL)
+ break;
+ if (!can_open_delegated(delegation, open_mode))
+ break;
+ /* Save the delegation */
+ memcpy(stateid.data, delegation->stateid.data, sizeof(stateid.data));
+ rcu_read_unlock();
+ lock_kernel();
+ ret = _nfs4_do_access(state->inode, state->owner->so_cred, open_mode);
+ unlock_kernel();
+ if (ret != 0)
+ goto out;
+ ret = -EAGAIN;
+ rcu_read_lock();
+ delegation = rcu_dereference(nfsi->delegation);
+ /* If no delegation, try a cached open */
+ if (delegation == NULL)
+ continue;
+ /* Is the delegation still valid? */
+ if (memcmp(stateid.data, delegation->stateid.data, sizeof(stateid.data)) != 0)
+ continue;
+ rcu_read_unlock();
+ update_open_stateid(state, NULL, &stateid, open_mode);
+ goto out_return_state;
+ }
+ rcu_read_unlock();
+out:
+ return ERR_PTR(ret);
+out_return_state:
+ atomic_inc(&state->count);
+ return state;
+}
+
static struct nfs4_state *nfs4_opendata_to_nfs4_state(struct nfs4_opendata *data)
{
struct inode *inode;
struct nfs4_state *state = NULL;
+ struct nfs_delegation *delegation;
+ nfs4_stateid *deleg_stateid = NULL;
+ int ret;
- if (!(data->f_attr.valid & NFS_ATTR_FATTR))
+ if (!data->rpc_done) {
+ state = nfs4_try_open_cached(data);
goto out;
+ }
+
+ ret = -EAGAIN;
+ if (!(data->f_attr.valid & NFS_ATTR_FATTR))
+ goto err;
inode = nfs_fhget(data->dir->d_sb, &data->o_res.fh, &data->f_attr);
+ ret = PTR_ERR(inode);
if (IS_ERR(inode))
- goto out;
+ goto err;
+ ret = -ENOMEM;
state = nfs4_get_open_state(inode, data->owner);
if (state == NULL)
- goto put_inode;
- update_open_stateid(state, &data->o_res.stateid, data->o_arg.open_flags);
-put_inode:
+ goto err_put_inode;
+ if (data->o_res.delegation_type != 0) {
+ int delegation_flags = 0;
+
+ rcu_read_lock();
+ delegation = rcu_dereference(NFS_I(inode)->delegation);
+ if (delegation)
+ delegation_flags = delegation->flags;
+ rcu_read_unlock();
+ if (!(delegation_flags & NFS_DELEGATION_NEED_RECLAIM))
+ nfs_inode_set_delegation(state->inode,
+ data->owner->so_cred,
+ &data->o_res);
+ else
+ nfs_inode_reclaim_delegation(state->inode,
+ data->owner->so_cred,
+ &data->o_res);
+ }
+ rcu_read_lock();
+ delegation = rcu_dereference(NFS_I(inode)->delegation);
+ if (delegation != NULL)
+ deleg_stateid = &delegation->stateid;
+ update_open_stateid(state, &data->o_res.stateid, deleg_stateid, data->o_arg.open_flags);
+ rcu_read_unlock();
iput(inode);
out:
return state;
+err_put_inode:
+ iput(inode);
+err:
+ return ERR_PTR(ret);
}
static struct nfs_open_context *nfs4_state_find_open_context(struct nfs4_state *state)
return ERR_PTR(-ENOENT);
}
-static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, nfs4_stateid *stateid)
+static struct nfs4_opendata *nfs4_open_recoverdata_alloc(struct nfs_open_context *ctx, struct nfs4_state *state)
+{
+ struct nfs4_opendata *opendata;
+
+ opendata = nfs4_opendata_alloc(&ctx->path, state->owner, 0, NULL);
+ if (opendata == NULL)
+ return ERR_PTR(-ENOMEM);
+ opendata->state = state;
+ atomic_inc(&state->count);
+ return opendata;
+}
+
+static int nfs4_open_recover_helper(struct nfs4_opendata *opendata, mode_t openflags, struct nfs4_state **res)
{
+ struct nfs4_state *newstate;
int ret;
opendata->o_arg.open_flags = openflags;
+ memset(&opendata->o_res, 0, sizeof(opendata->o_res));
+ memset(&opendata->c_res, 0, sizeof(opendata->c_res));
+ nfs4_init_opendata_res(opendata);
ret = _nfs4_proc_open(opendata);
if (ret != 0)
return ret;
- memcpy(stateid->data, opendata->o_res.stateid.data,
- sizeof(stateid->data));
+ newstate = nfs4_opendata_to_nfs4_state(opendata);
+ if (IS_ERR(newstate))
+ return PTR_ERR(newstate);
+ nfs4_close_state(&opendata->path, newstate, openflags);
+ *res = newstate;
return 0;
}
static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *state)
{
- nfs4_stateid stateid;
struct nfs4_state *newstate;
- int mode = 0;
- int delegation = 0;
int ret;
/* memory barrier prior to reading state->n_* */
+ clear_bit(NFS_DELEGATED_STATE, &state->flags);
smp_rmb();
if (state->n_rdwr != 0) {
- ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &stateid);
+ ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate);
if (ret != 0)
return ret;
- mode |= FMODE_READ|FMODE_WRITE;
- if (opendata->o_res.delegation_type != 0)
- delegation = opendata->o_res.delegation_type;
- smp_rmb();
+ if (newstate != state)
+ return -ESTALE;
}
if (state->n_wronly != 0) {
- ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &stateid);
+ ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate);
if (ret != 0)
return ret;
- mode |= FMODE_WRITE;
- if (opendata->o_res.delegation_type != 0)
- delegation = opendata->o_res.delegation_type;
- smp_rmb();
+ if (newstate != state)
+ return -ESTALE;
}
if (state->n_rdonly != 0) {
- ret = nfs4_open_recover_helper(opendata, FMODE_READ, &stateid);
+ ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate);
if (ret != 0)
return ret;
- mode |= FMODE_READ;
+ if (newstate != state)
+ return -ESTALE;
}
- clear_bit(NFS_DELEGATED_STATE, &state->flags);
- if (mode == 0)
- return 0;
- if (opendata->o_res.delegation_type == 0)
- opendata->o_res.delegation_type = delegation;
- opendata->o_arg.open_flags |= mode;
- newstate = nfs4_opendata_to_nfs4_state(opendata);
- if (newstate != NULL) {
- if (opendata->o_res.delegation_type != 0) {
- struct nfs_inode *nfsi = NFS_I(newstate->inode);
- int delegation_flags = 0;
- if (nfsi->delegation)
- delegation_flags = nfsi->delegation->flags;
- if (!(delegation_flags & NFS_DELEGATION_NEED_RECLAIM))
- nfs_inode_set_delegation(newstate->inode,
- opendata->owner->so_cred,
- &opendata->o_res);
- else
- nfs_inode_reclaim_delegation(newstate->inode,
- opendata->owner->so_cred,
- &opendata->o_res);
- }
- nfs4_close_state(newstate, opendata->o_arg.open_flags);
+ /*
+ * We may have performed cached opens for all three recoveries.
+ * Check if we need to update the current stateid.
+ */
+ if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0 &&
+ memcmp(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data)) != 0) {
+ write_seqlock(&state->seqlock);
+ if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
+ memcpy(state->stateid.data, state->open_stateid.data, sizeof(state->stateid.data));
+ write_sequnlock(&state->seqlock);
}
- if (newstate != state)
- return -ESTALE;
return 0;
}
* OPEN_RECLAIM:
* reclaim state on the server after a reboot.
*/
-static int _nfs4_do_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state, struct dentry *dentry)
+static int _nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
{
- struct nfs_delegation *delegation = NFS_I(state->inode)->delegation;
+ struct nfs_delegation *delegation;
struct nfs4_opendata *opendata;
int delegation_type = 0;
int status;
- if (delegation != NULL) {
- if (!(delegation->flags & NFS_DELEGATION_NEED_RECLAIM)) {
- memcpy(&state->stateid, &delegation->stateid,
- sizeof(state->stateid));
- set_bit(NFS_DELEGATED_STATE, &state->flags);
- return 0;
- }
- delegation_type = delegation->type;
- }
- opendata = nfs4_opendata_alloc(dentry, sp, 0, NULL);
- if (opendata == NULL)
- return -ENOMEM;
+ opendata = nfs4_open_recoverdata_alloc(ctx, state);
+ if (IS_ERR(opendata))
+ return PTR_ERR(opendata);
opendata->o_arg.claim = NFS4_OPEN_CLAIM_PREVIOUS;
opendata->o_arg.fh = NFS_FH(state->inode);
- nfs_copy_fh(&opendata->o_res.fh, opendata->o_arg.fh);
+ rcu_read_lock();
+ delegation = rcu_dereference(NFS_I(state->inode)->delegation);
+ if (delegation != NULL && (delegation->flags & NFS_DELEGATION_NEED_RECLAIM) != 0)
+ delegation_type = delegation->flags;
+ rcu_read_unlock();
opendata->o_arg.u.delegation_type = delegation_type;
status = nfs4_open_recover(opendata, state);
- nfs4_opendata_free(opendata);
+ nfs4_opendata_put(opendata);
return status;
}
-static int nfs4_do_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *state, struct dentry *dentry)
+static int nfs4_do_open_reclaim(struct nfs_open_context *ctx, struct nfs4_state *state)
{
struct nfs_server *server = NFS_SERVER(state->inode);
struct nfs4_exception exception = { };
int err;
do {
- err = _nfs4_do_open_reclaim(sp, state, dentry);
+ err = _nfs4_do_open_reclaim(ctx, state);
if (err != -NFS4ERR_DELAY)
break;
nfs4_handle_exception(server, err, &exception);
ctx = nfs4_state_find_open_context(state);
if (IS_ERR(ctx))
return PTR_ERR(ctx);
- ret = nfs4_do_open_reclaim(sp, state, ctx->dentry);
+ ret = nfs4_do_open_reclaim(ctx, state);
put_nfs_open_context(ctx);
return ret;
}
-static int _nfs4_open_delegation_recall(struct dentry *dentry, struct nfs4_state *state)
+static int _nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
{
- struct nfs4_state_owner *sp = state->owner;
struct nfs4_opendata *opendata;
int ret;
- if (!test_bit(NFS_DELEGATED_STATE, &state->flags))
- return 0;
- opendata = nfs4_opendata_alloc(dentry, sp, 0, NULL);
- if (opendata == NULL)
- return -ENOMEM;
+ opendata = nfs4_open_recoverdata_alloc(ctx, state);
+ if (IS_ERR(opendata))
+ return PTR_ERR(opendata);
opendata->o_arg.claim = NFS4_OPEN_CLAIM_DELEGATE_CUR;
- memcpy(opendata->o_arg.u.delegation.data, state->stateid.data,
+ memcpy(opendata->o_arg.u.delegation.data, stateid->data,
sizeof(opendata->o_arg.u.delegation.data));
ret = nfs4_open_recover(opendata, state);
- nfs4_opendata_free(opendata);
+ nfs4_opendata_put(opendata);
return ret;
}
-int nfs4_open_delegation_recall(struct dentry *dentry, struct nfs4_state *state)
+int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid)
{
struct nfs4_exception exception = { };
- struct nfs_server *server = NFS_SERVER(dentry->d_inode);
+ struct nfs_server *server = NFS_SERVER(state->inode);
int err;
do {
- err = _nfs4_open_delegation_recall(dentry, state);
+ err = _nfs4_open_delegation_recall(ctx, state, stateid);
switch (err) {
case 0:
return err;
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_EXPIRED:
/* Don't recall a delegation if it was lost */
- nfs4_schedule_state_recovery(server->nfs4_state);
+ nfs4_schedule_state_recovery(server->nfs_client);
return err;
}
err = nfs4_handle_exception(server, err, &exception);
memcpy(data->o_res.stateid.data, data->c_res.stateid.data,
sizeof(data->o_res.stateid.data));
renew_lease(data->o_res.server, data->timestamp);
+ data->rpc_done = 1;
}
- nfs_increment_open_seqid(data->rpc_status, data->c_arg.seqid);
nfs_confirm_seqid(&data->owner->so_seqid, data->rpc_status);
+ nfs_increment_open_seqid(data->rpc_status, data->c_arg.seqid);
}
static void nfs4_open_confirm_release(void *calldata)
if (data->cancelled == 0)
goto out_free;
/* In case of error, no cleanup! */
- if (data->rpc_status != 0)
+ if (!data->rpc_done)
goto out_free;
nfs_confirm_seqid(&data->owner->so_seqid, 0);
state = nfs4_opendata_to_nfs4_state(data);
- if (state != NULL)
- nfs4_close_state(state, data->o_arg.open_flags);
+ if (!IS_ERR(state))
+ nfs4_close_state(&data->path, state, data->o_arg.open_flags);
out_free:
- nfs4_opendata_free(data);
+ nfs4_opendata_put(data);
}
static const struct rpc_call_ops nfs4_open_confirm_ops = {
struct rpc_task *task;
int status;
- atomic_inc(&data->count);
- /*
- * If rpc_run_task() ends up calling ->rpc_release(), we
- * want to ensure that it takes the 'error' code path.
- */
- data->rpc_status = -ENOMEM;
+ kref_get(&data->kref);
+ data->rpc_done = 0;
+ data->rpc_status = 0;
task = rpc_run_task(server->client, RPC_TASK_ASYNC, &nfs4_open_confirm_ops, data);
if (IS_ERR(task))
return PTR_ERR(task);
smp_wmb();
} else
status = data->rpc_status;
- rpc_release_task(task);
+ rpc_put_task(task);
return status;
}
if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0)
return;
+ /*
+ * Check if we still need to send an OPEN call, or if we can use
+ * a delegation instead.
+ */
+ if (data->state != NULL) {
+ struct nfs_delegation *delegation;
+
+ if (can_open_cached(data->state, data->o_arg.open_flags & (FMODE_READ|FMODE_WRITE|O_EXCL)))
+ goto out_no_action;
+ rcu_read_lock();
+ delegation = rcu_dereference(NFS_I(data->state->inode)->delegation);
+ if (delegation != NULL &&
+ (delegation->flags & NFS_DELEGATION_NEED_RECLAIM) == 0) {
+ rcu_read_unlock();
+ goto out_no_action;
+ }
+ rcu_read_unlock();
+ }
/* Update sequence id. */
- data->o_arg.id = sp->so_id;
+ data->o_arg.id = sp->so_owner_id.id;
data->o_arg.clientid = sp->so_client->cl_clientid;
- if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS)
+ if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) {
msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
+ nfs_copy_fh(&data->o_res.fh, data->o_arg.fh);
+ }
data->timestamp = jiffies;
rpc_call_setup(task, &msg, 0);
+ return;
+out_no_action:
+ task->tk_action = NULL;
+
}
static void nfs4_open_done(struct rpc_task *task, void *calldata)
data->rpc_status = -ENOTDIR;
}
renew_lease(data->o_res.server, data->timestamp);
+ if (!(data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM))
+ nfs_confirm_seqid(&data->owner->so_seqid, 0);
}
nfs_increment_open_seqid(data->rpc_status, data->o_arg.seqid);
+ data->rpc_done = 1;
}
static void nfs4_open_release(void *calldata)
if (data->cancelled == 0)
goto out_free;
/* In case of error, no cleanup! */
- if (data->rpc_status != 0)
+ if (data->rpc_status != 0 || !data->rpc_done)
goto out_free;
/* In case we need an open_confirm, no cleanup! */
if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)
goto out_free;
nfs_confirm_seqid(&data->owner->so_seqid, 0);
state = nfs4_opendata_to_nfs4_state(data);
- if (state != NULL)
- nfs4_close_state(state, data->o_arg.open_flags);
+ if (!IS_ERR(state))
+ nfs4_close_state(&data->path, state, data->o_arg.open_flags);
out_free:
- nfs4_opendata_free(data);
+ nfs4_opendata_put(data);
}
static const struct rpc_call_ops nfs4_open_ops = {
struct rpc_task *task;
int status;
- atomic_inc(&data->count);
- /*
- * If rpc_run_task() ends up calling ->rpc_release(), we
- * want to ensure that it takes the 'error' code path.
- */
- data->rpc_status = -ENOMEM;
+ kref_get(&data->kref);
+ data->rpc_done = 0;
+ data->rpc_status = 0;
+ data->cancelled = 0;
task = rpc_run_task(server->client, RPC_TASK_ASYNC, &nfs4_open_ops, data);
if (IS_ERR(task))
return PTR_ERR(task);
smp_wmb();
} else
status = data->rpc_status;
- rpc_release_task(task);
- if (status != 0)
+ rpc_put_task(task);
+ if (status != 0 || !data->rpc_done)
return status;
+ if (o_res->fh.size == 0)
+ _nfs4_proc_lookup(dir, o_arg->name, &o_res->fh, o_res->f_attr);
+
if (o_arg->open_flags & O_CREAT) {
update_changeattr(dir, &o_res->cinfo);
nfs_post_op_update_inode(dir, o_res->dir_attr);
if (status != 0)
return status;
}
- nfs_confirm_seqid(&data->owner->so_seqid, 0);
if (!(o_res->f_attr->valid & NFS_ATTR_FATTR))
- return server->rpc_ops->getattr(server, &o_res->fh, o_res->f_attr);
+ _nfs4_proc_getattr(server, &o_res->fh, o_res->f_attr);
return 0;
}
mask |= MAY_READ;
if (openflags & FMODE_WRITE)
mask |= MAY_WRITE;
+ if (openflags & FMODE_EXEC)
+ mask |= MAY_EXEC;
status = nfs_access_get_cached(inode, cred, &cache);
if (status == 0)
goto out;
return -EACCES;
}
-int nfs4_recover_expired_lease(struct nfs_server *server)
+static int nfs4_recover_expired_lease(struct nfs_server *server)
{
- struct nfs4_client *clp = server->nfs4_state;
+ struct nfs_client *clp = server->nfs_client;
+ int ret;
- if (test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state))
+ for (;;) {
+ ret = nfs4_wait_clnt_recover(server->client, clp);
+ if (ret != 0)
+ return ret;
+ if (!test_and_clear_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state))
+ break;
nfs4_schedule_state_recovery(clp);
- return nfs4_wait_clnt_recover(server->client, clp);
+ }
+ return 0;
}
/*
* reclaim state on the server after a network partition.
* Assumes caller holds the appropriate lock
*/
-static int _nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state, struct dentry *dentry)
+static int _nfs4_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
{
- struct inode *inode = state->inode;
- struct nfs_delegation *delegation = NFS_I(inode)->delegation;
struct nfs4_opendata *opendata;
- int openflags = state->state & (FMODE_READ|FMODE_WRITE);
int ret;
- if (delegation != NULL && !(delegation->flags & NFS_DELEGATION_NEED_RECLAIM)) {
- ret = _nfs4_do_access(inode, sp->so_cred, openflags);
- if (ret < 0)
- return ret;
- memcpy(&state->stateid, &delegation->stateid, sizeof(state->stateid));
- set_bit(NFS_DELEGATED_STATE, &state->flags);
- return 0;
- }
- opendata = nfs4_opendata_alloc(dentry, sp, openflags, NULL);
- if (opendata == NULL)
- return -ENOMEM;
+ opendata = nfs4_open_recoverdata_alloc(ctx, state);
+ if (IS_ERR(opendata))
+ return PTR_ERR(opendata);
ret = nfs4_open_recover(opendata, state);
if (ret == -ESTALE) {
/* Invalidate the state owner so we don't ever use it again */
- nfs4_drop_state_owner(sp);
- d_drop(dentry);
+ nfs4_drop_state_owner(state->owner);
+ d_drop(ctx->path.dentry);
}
- nfs4_opendata_free(opendata);
+ nfs4_opendata_put(opendata);
return ret;
}
-static inline int nfs4_do_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state, struct dentry *dentry)
+static inline int nfs4_do_open_expired(struct nfs_open_context *ctx, struct nfs4_state *state)
{
- struct nfs_server *server = NFS_SERVER(dentry->d_inode);
+ struct nfs_server *server = NFS_SERVER(state->inode);
struct nfs4_exception exception = { };
int err;
do {
- err = _nfs4_open_expired(sp, state, dentry);
+ err = _nfs4_open_expired(ctx, state);
if (err == -NFS4ERR_DELAY)
nfs4_handle_exception(server, err, &exception);
} while (exception.retry);
ctx = nfs4_state_find_open_context(state);
if (IS_ERR(ctx))
return PTR_ERR(ctx);
- ret = nfs4_do_open_expired(sp, state, ctx->dentry);
+ ret = nfs4_do_open_expired(ctx, state);
put_nfs_open_context(ctx);
return ret;
}
/*
- * Returns a referenced nfs4_state if there is an open delegation on the file
+ * on an EXCLUSIVE create, the server should send back a bitmask with FATTR4-*
+ * fields corresponding to attributes that were used to store the verifier.
+ * Make sure we clobber those fields in the later setattr call
*/
-static int _nfs4_open_delegated(struct inode *inode, int flags, struct rpc_cred *cred, struct nfs4_state **res)
-{
- struct nfs_delegation *delegation;
- struct nfs_server *server = NFS_SERVER(inode);
- struct nfs4_client *clp = server->nfs4_state;
- struct nfs_inode *nfsi = NFS_I(inode);
- struct nfs4_state_owner *sp = NULL;
- struct nfs4_state *state = NULL;
- int open_flags = flags & (FMODE_READ|FMODE_WRITE);
- int err;
-
- err = -ENOMEM;
- if (!(sp = nfs4_get_state_owner(server, cred))) {
- dprintk("%s: nfs4_get_state_owner failed!\n", __FUNCTION__);
- return err;
- }
- err = nfs4_recover_expired_lease(server);
- if (err != 0)
- goto out_put_state_owner;
- /* Protect against reboot recovery - NOTE ORDER! */
- down_read(&clp->cl_sem);
- /* Protect against delegation recall */
- down_read(&nfsi->rwsem);
- delegation = NFS_I(inode)->delegation;
- err = -ENOENT;
- if (delegation == NULL || (delegation->type & open_flags) != open_flags)
- goto out_err;
- err = -ENOMEM;
- state = nfs4_get_open_state(inode, sp);
- if (state == NULL)
- goto out_err;
-
- err = -ENOENT;
- if ((state->state & open_flags) == open_flags) {
- spin_lock(&inode->i_lock);
- update_open_stateflags(state, open_flags);
- spin_unlock(&inode->i_lock);
- goto out_ok;
- } else if (state->state != 0)
- goto out_put_open_state;
-
- lock_kernel();
- err = _nfs4_do_access(inode, cred, open_flags);
- unlock_kernel();
- if (err != 0)
- goto out_put_open_state;
- set_bit(NFS_DELEGATED_STATE, &state->flags);
- update_open_stateid(state, &delegation->stateid, open_flags);
-out_ok:
- nfs4_put_state_owner(sp);
- up_read(&nfsi->rwsem);
- up_read(&clp->cl_sem);
- *res = state;
- return 0;
-out_put_open_state:
- nfs4_put_open_state(state);
-out_err:
- up_read(&nfsi->rwsem);
- up_read(&clp->cl_sem);
- if (err != -EACCES)
- nfs_inode_return_delegation(inode);
-out_put_state_owner:
- nfs4_put_state_owner(sp);
- return err;
-}
-
-static struct nfs4_state *nfs4_open_delegated(struct inode *inode, int flags, struct rpc_cred *cred)
+static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr)
{
- struct nfs4_exception exception = { };
- struct nfs4_state *res = ERR_PTR(-EIO);
- int err;
+ if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_ACCESS) &&
+ !(sattr->ia_valid & ATTR_ATIME_SET))
+ sattr->ia_valid |= ATTR_ATIME;
- do {
- err = _nfs4_open_delegated(inode, flags, cred, &res);
- if (err == 0)
- break;
- res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(inode),
- err, &exception));
- } while (exception.retry);
- return res;
+ if ((opendata->o_res.attrset[1] & FATTR4_WORD1_TIME_MODIFY) &&
+ !(sattr->ia_valid & ATTR_MTIME_SET))
+ sattr->ia_valid |= ATTR_MTIME;
}
/*
* Returns a referenced nfs4_state
*/
-static int _nfs4_do_open(struct inode *dir, struct dentry *dentry, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
+static int _nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred, struct nfs4_state **res)
{
struct nfs4_state_owner *sp;
struct nfs4_state *state = NULL;
struct nfs_server *server = NFS_SERVER(dir);
- struct nfs4_client *clp = server->nfs4_state;
+ struct nfs_client *clp = server->nfs_client;
struct nfs4_opendata *opendata;
- int status;
+ int status;
/* Protect against reboot recovery conflicts */
status = -ENOMEM;
status = nfs4_recover_expired_lease(server);
if (status != 0)
goto err_put_state_owner;
+ if (path->dentry->d_inode != NULL)
+ nfs4_return_incompatible_delegation(path->dentry->d_inode, flags & (FMODE_READ|FMODE_WRITE));
down_read(&clp->cl_sem);
status = -ENOMEM;
- opendata = nfs4_opendata_alloc(dentry, sp, flags, sattr);
+ opendata = nfs4_opendata_alloc(path, sp, flags, sattr);
if (opendata == NULL)
- goto err_put_state_owner;
+ goto err_release_rwsem;
+
+ if (path->dentry->d_inode != NULL)
+ opendata->state = nfs4_get_open_state(path->dentry->d_inode, sp);
status = _nfs4_proc_open(opendata);
if (status != 0)
- goto err_opendata_free;
+ goto err_opendata_put;
+
+ if (opendata->o_arg.open_flags & O_EXCL)
+ nfs4_exclusive_attrset(opendata, sattr);
- status = -ENOMEM;
state = nfs4_opendata_to_nfs4_state(opendata);
- if (state == NULL)
- goto err_opendata_free;
- if (opendata->o_res.delegation_type != 0)
- nfs_inode_set_delegation(state->inode, cred, &opendata->o_res);
- nfs4_opendata_free(opendata);
+ status = PTR_ERR(state);
+ if (IS_ERR(state))
+ goto err_opendata_put;
+ nfs4_opendata_put(opendata);
nfs4_put_state_owner(sp);
up_read(&clp->cl_sem);
*res = state;
return 0;
-err_opendata_free:
- nfs4_opendata_free(opendata);
+err_opendata_put:
+ nfs4_opendata_put(opendata);
+err_release_rwsem:
+ up_read(&clp->cl_sem);
err_put_state_owner:
nfs4_put_state_owner(sp);
out_err:
- /* Note: clp->cl_sem must be released before nfs4_put_open_state()! */
- up_read(&clp->cl_sem);
*res = NULL;
return status;
}
-static struct nfs4_state *nfs4_do_open(struct inode *dir, struct dentry *dentry, int flags, struct iattr *sattr, struct rpc_cred *cred)
+static struct nfs4_state *nfs4_do_open(struct inode *dir, struct path *path, int flags, struct iattr *sattr, struct rpc_cred *cred)
{
struct nfs4_exception exception = { };
struct nfs4_state *res;
int status;
do {
- status = _nfs4_do_open(dir, dentry, flags, sattr, cred, &res);
+ status = _nfs4_do_open(dir, path, flags, sattr, cred, &res);
if (status == 0)
break;
/* NOTE: BAD_SEQID means the server and client disagree about the
* the user though...
*/
if (status == -NFS4ERR_BAD_SEQID) {
- printk(KERN_WARNING "NFS: v4 server returned a bad sequence-id error!\n");
+ printk(KERN_WARNING "NFS: v4 server %s "
+ " returned a bad sequence-id error!\n",
+ NFS_SERVER(dir)->nfs_client->cl_hostname);
exception.retry = 1;
continue;
}
exception.retry = 1;
continue;
}
+ if (status == -EAGAIN) {
+ /* We must have found a delegation */
+ exception.retry = 1;
+ continue;
+ }
res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir),
status, &exception));
} while (exception.retry);
}
struct nfs4_closedata {
+ struct path path;
struct inode *inode;
struct nfs4_state *state;
struct nfs_closeargs arg;
nfs4_put_open_state(calldata->state);
nfs_free_seqid(calldata->arg.seqid);
nfs4_put_state_owner(sp);
+ dput(calldata->path.dentry);
+ mntput(calldata->path.mnt);
kfree(calldata);
}
nfs_increment_open_seqid(task->tk_status, calldata->arg.seqid);
switch (task->tk_status) {
case 0:
- memcpy(&state->stateid, &calldata->res.stateid,
- sizeof(state->stateid));
+ nfs_set_open_stateid(state, &calldata->res.stateid, calldata->arg.open_flags);
renew_lease(server, calldata->timestamp);
break;
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_EXPIRED:
- nfs4_schedule_state_recovery(server->nfs4_state);
break;
default:
if (nfs4_async_handle_error(task, server) == -EAGAIN) {
.rpc_resp = &calldata->res,
.rpc_cred = state->owner->so_cred,
};
- int mode = 0, old_mode;
+ int clear_rd, clear_wr, clear_rdwr;
+ int mode;
if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
return;
- /* Recalculate the new open mode in case someone reopened the file
- * while we were waiting in line to be scheduled.
- */
+
+ mode = FMODE_READ|FMODE_WRITE;
+ clear_rd = clear_wr = clear_rdwr = 0;
spin_lock(&state->owner->so_lock);
- spin_lock(&calldata->inode->i_lock);
- mode = old_mode = state->state;
+ /* Calculate the change in open mode */
if (state->n_rdwr == 0) {
- if (state->n_rdonly == 0)
+ if (state->n_rdonly == 0) {
mode &= ~FMODE_READ;
- if (state->n_wronly == 0)
+ clear_rd |= test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags);
+ clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags);
+ }
+ if (state->n_wronly == 0) {
mode &= ~FMODE_WRITE;
+ clear_wr |= test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags);
+ clear_rdwr |= test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags);
+ }
}
- nfs4_state_set_mode_locked(state, mode);
- spin_unlock(&calldata->inode->i_lock);
spin_unlock(&state->owner->so_lock);
- if (mode == old_mode || test_bit(NFS_DELEGATED_STATE, &state->flags)) {
+ if (!clear_rd && !clear_wr && !clear_rdwr) {
/* Note: exit _without_ calling nfs4_close_done */
task->tk_action = NULL;
return;
*
* NOTE: Caller must be holding the sp->so_owner semaphore!
*/
-int nfs4_do_close(struct inode *inode, struct nfs4_state *state)
+int nfs4_do_close(struct path *path, struct nfs4_state *state)
{
- struct nfs_server *server = NFS_SERVER(inode);
+ struct nfs_server *server = NFS_SERVER(state->inode);
struct nfs4_closedata *calldata;
+ struct nfs4_state_owner *sp = state->owner;
+ struct rpc_task *task;
int status = -ENOMEM;
calldata = kmalloc(sizeof(*calldata), GFP_KERNEL);
if (calldata == NULL)
goto out;
- calldata->inode = inode;
+ calldata->inode = state->inode;
calldata->state = state;
- calldata->arg.fh = NFS_FH(inode);
- calldata->arg.stateid = &state->stateid;
+ calldata->arg.fh = NFS_FH(state->inode);
+ calldata->arg.stateid = &state->open_stateid;
/* Serialization for the sequence id */
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
calldata->arg.bitmask = server->attr_bitmask;
calldata->res.fattr = &calldata->fattr;
calldata->res.server = server;
+ calldata->path.mnt = mntget(path->mnt);
+ calldata->path.dentry = dget(path->dentry);
- status = nfs4_call_async(server->client, &nfs4_close_ops, calldata);
- if (status == 0)
- goto out;
-
- nfs_free_seqid(calldata->arg.seqid);
+ task = rpc_run_task(server->client, RPC_TASK_ASYNC, &nfs4_close_ops, calldata);
+ if (IS_ERR(task))
+ return PTR_ERR(task);
+ rpc_put_task(task);
+ return 0;
out_free_calldata:
kfree(calldata);
out:
+ nfs4_put_open_state(state);
+ nfs4_put_state_owner(sp);
return status;
}
-static int nfs4_intent_set_file(struct nameidata *nd, struct dentry *dentry, struct nfs4_state *state)
+static int nfs4_intent_set_file(struct nameidata *nd, struct path *path, struct nfs4_state *state)
{
struct file *filp;
+ int ret;
- filp = lookup_instantiate_filp(nd, dentry, NULL);
+ /* If the open_intent is for execute, we have an extra check to make */
+ if (nd->intent.open.flags & FMODE_EXEC) {
+ ret = _nfs4_do_access(state->inode,
+ state->owner->so_cred,
+ nd->intent.open.flags);
+ if (ret < 0)
+ goto out_close;
+ }
+ filp = lookup_instantiate_filp(nd, path->dentry, NULL);
if (!IS_ERR(filp)) {
struct nfs_open_context *ctx;
ctx = (struct nfs_open_context *)filp->private_data;
ctx->state = state;
return 0;
}
- nfs4_close_state(state, nd->intent.open.flags);
- return PTR_ERR(filp);
+ ret = PTR_ERR(filp);
+out_close:
+ nfs4_close_state(path, state, nd->intent.open.flags);
+ return ret;
}
struct dentry *
nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
{
+ struct path path = {
+ .mnt = nd->mnt,
+ .dentry = dentry,
+ };
struct iattr attr;
struct rpc_cred *cred;
struct nfs4_state *state;
BUG_ON(nd->intent.open.flags & O_CREAT);
}
- cred = rpcauth_lookupcred(NFS_SERVER(dir)->client->cl_auth, 0);
+ cred = rpcauth_lookupcred(NFS_CLIENT(dir)->cl_auth, 0);
if (IS_ERR(cred))
return (struct dentry *)cred;
- state = nfs4_do_open(dir, dentry, nd->intent.open.flags, &attr, cred);
+ state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
if (PTR_ERR(state) == -ENOENT)
res = d_add_unique(dentry, igrab(state->inode));
if (res != NULL)
dentry = res;
- nfs4_intent_set_file(nd, dentry, state);
+ nfs4_intent_set_file(nd, &path, state);
return res;
}
int
nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, struct nameidata *nd)
{
+ struct path path = {
+ .mnt = nd->mnt,
+ .dentry = dentry,
+ };
struct rpc_cred *cred;
struct nfs4_state *state;
- cred = rpcauth_lookupcred(NFS_SERVER(dir)->client->cl_auth, 0);
+ cred = rpcauth_lookupcred(NFS_CLIENT(dir)->cl_auth, 0);
if (IS_ERR(cred))
return PTR_ERR(cred);
- state = nfs4_open_delegated(dentry->d_inode, openflags, cred);
- if (IS_ERR(state))
- state = nfs4_do_open(dir, dentry, openflags, NULL, cred);
+ state = nfs4_do_open(dir, &path, openflags, NULL, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
switch (PTR_ERR(state)) {
case -EROFS:
lookup_instantiate_filp(nd, (struct dentry *)state, NULL);
return 1;
- case -ENOENT:
- if (dentry->d_inode == NULL)
- return 1;
+ default:
+ goto out_drop;
}
- goto out_drop;
}
if (state->inode == dentry->d_inode) {
- nfs4_intent_set_file(nd, dentry, state);
+ nfs4_intent_set_file(nd, &path, state);
return 1;
}
- nfs4_close_state(state, openflags);
+ nfs4_close_state(&path, state, openflags);
out_drop:
d_drop(dentry);
return 0;
return err;
}
+/*
+ * get the file handle for the "/" directory on the server
+ */
static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
- struct nfs_fsinfo *info)
+ struct nfs_fsinfo *info)
{
- struct nfs_fattr * fattr = info->fattr;
- unsigned char * p;
- struct qstr q;
- struct nfs4_lookup_arg args = {
- .dir_fh = fhandle,
- .name = &q,
- .bitmask = nfs4_fattr_bitmap,
- };
- struct nfs4_lookup_res res = {
- .server = server,
- .fattr = fattr,
- .fh = fhandle,
- };
- struct rpc_message msg = {
- .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUP],
- .rpc_argp = &args,
- .rpc_resp = &res,
- };
int status;
- /*
- * Now we do a separate LOOKUP for each component of the mount path.
- * The LOOKUPs are done separately so that we can conveniently
- * catch an ERR_WRONGSEC if it occurs along the way...
- */
status = nfs4_lookup_root(server, fhandle, info);
- if (status)
- goto out;
-
- p = server->mnt_path;
- for (;;) {
- struct nfs4_exception exception = { };
-
- while (*p == '/')
- p++;
- if (!*p)
- break;
- q.name = p;
- while (*p && (*p != '/'))
- p++;
- q.len = p - q.name;
-
- do {
- nfs_fattr_init(fattr);
- status = nfs4_handle_exception(server,
- rpc_call_sync(server->client, &msg, 0),
- &exception);
- } while (exception.retry);
- if (status == 0)
- continue;
- if (status == -ENOENT) {
- printk(KERN_NOTICE "NFS: mount path %s does not exist!\n", server->mnt_path);
- printk(KERN_NOTICE "NFS: suggestion: try mounting '/' instead.\n");
- }
- break;
- }
if (status == 0)
status = nfs4_server_capabilities(server, fhandle);
if (status == 0)
status = nfs4_do_fsinfo(server, fhandle, info);
-out:
return nfs4_map_errors(status);
}
+/*
+ * Get locations and (maybe) other attributes of a referral.
+ * Note that we'll actually follow the referral later when
+ * we detect fsid mismatch in inode revalidation
+ */
+static int nfs4_get_referral(struct inode *dir, const struct qstr *name, struct nfs_fattr *fattr, struct nfs_fh *fhandle)
+{
+ int status = -ENOMEM;
+ struct page *page = NULL;
+ struct nfs4_fs_locations *locations = NULL;
+
+ page = alloc_page(GFP_KERNEL);
+ if (page == NULL)
+ goto out;
+ locations = kmalloc(sizeof(struct nfs4_fs_locations), GFP_KERNEL);
+ if (locations == NULL)
+ goto out;
+
+ status = nfs4_proc_fs_locations(dir, name, locations, page);
+ if (status != 0)
+ goto out;
+ /* Make sure server returned a different fsid for the referral */
+ if (nfs_fsid_equal(&NFS_SERVER(dir)->fsid, &locations->fattr.fsid)) {
+ dprintk("%s: server did not return a different fsid for a referral at %s\n", __FUNCTION__, name->name);
+ status = -EIO;
+ goto out;
+ }
+
+ memcpy(fattr, &locations->fattr, sizeof(struct nfs_fattr));
+ fattr->valid |= NFS_ATTR_FATTR_V4_REFERRAL;
+ if (!fattr->mode)
+ fattr->mode = S_IFDIR;
+ memset(fhandle, 0, sizeof(struct nfs_fh));
+out:
+ if (page)
+ __free_page(page);
+ if (locations)
+ kfree(locations);
+ return status;
+}
+
static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr)
{
struct nfs4_getattr_arg args = {
nfs_fattr_init(fattr);
- cred = rpcauth_lookupcred(NFS_SERVER(inode)->client->cl_auth, 0);
+ cred = rpcauth_lookupcred(NFS_CLIENT(inode)->cl_auth, 0);
if (IS_ERR(cred))
return PTR_ERR(cred);
return status;
}
-static int _nfs4_proc_lookup(struct inode *dir, struct qstr *name,
- struct nfs_fh *fhandle, struct nfs_fattr *fattr)
+static int _nfs4_proc_lookupfh(struct nfs_server *server, const struct nfs_fh *dirfh,
+ const struct qstr *name, struct nfs_fh *fhandle,
+ struct nfs_fattr *fattr)
{
int status;
- struct nfs_server *server = NFS_SERVER(dir);
struct nfs4_lookup_arg args = {
.bitmask = server->attr_bitmask,
- .dir_fh = NFS_FH(dir),
+ .dir_fh = dirfh,
.name = name,
};
struct nfs4_lookup_res res = {
.rpc_argp = &args,
.rpc_resp = &res,
};
-
+
nfs_fattr_init(fattr);
+
+ dprintk("NFS call lookupfh %s\n", name->name);
+ status = rpc_call_sync(server->client, &msg, 0);
+ dprintk("NFS reply lookupfh: %d\n", status);
+ return status;
+}
+
+static int nfs4_proc_lookupfh(struct nfs_server *server, struct nfs_fh *dirfh,
+ struct qstr *name, struct nfs_fh *fhandle,
+ struct nfs_fattr *fattr)
+{
+ struct nfs4_exception exception = { };
+ int err;
+ do {
+ err = _nfs4_proc_lookupfh(server, dirfh, name, fhandle, fattr);
+ /* FIXME: !!!! */
+ if (err == -NFS4ERR_MOVED) {
+ err = -EREMOTE;
+ break;
+ }
+ err = nfs4_handle_exception(server, err, &exception);
+ } while (exception.retry);
+ return err;
+}
+
+static int _nfs4_proc_lookup(struct inode *dir, const struct qstr *name,
+ struct nfs_fh *fhandle, struct nfs_fattr *fattr)
+{
+ int status;
dprintk("NFS call lookup %s\n", name->name);
- status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
+ status = _nfs4_proc_lookupfh(NFS_SERVER(dir), NFS_FH(dir), name, fhandle, fattr);
+ if (status == -NFS4ERR_MOVED)
+ status = nfs4_get_referral(dir, name, fattr, fhandle);
dprintk("NFS reply lookup: %d\n", status);
return status;
}
return err;
}
-static int _nfs4_proc_read(struct nfs_read_data *rdata)
-{
- int flags = rdata->flags;
- struct inode *inode = rdata->inode;
- struct nfs_fattr *fattr = rdata->res.fattr;
- struct nfs_server *server = NFS_SERVER(inode);
- struct rpc_message msg = {
- .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ],
- .rpc_argp = &rdata->args,
- .rpc_resp = &rdata->res,
- .rpc_cred = rdata->cred,
- };
- unsigned long timestamp = jiffies;
- int status;
-
- dprintk("NFS call read %d @ %Ld\n", rdata->args.count,
- (long long) rdata->args.offset);
-
- nfs_fattr_init(fattr);
- status = rpc_call_sync(server->client, &msg, flags);
- if (!status)
- renew_lease(server, timestamp);
- dprintk("NFS reply read: %d\n", status);
- return status;
-}
-
-static int nfs4_proc_read(struct nfs_read_data *rdata)
-{
- struct nfs4_exception exception = { };
- int err;
- do {
- err = nfs4_handle_exception(NFS_SERVER(rdata->inode),
- _nfs4_proc_read(rdata),
- &exception);
- } while (exception.retry);
- return err;
-}
-
-static int _nfs4_proc_write(struct nfs_write_data *wdata)
-{
- int rpcflags = wdata->flags;
- struct inode *inode = wdata->inode;
- struct nfs_fattr *fattr = wdata->res.fattr;
- struct nfs_server *server = NFS_SERVER(inode);
- struct rpc_message msg = {
- .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE],
- .rpc_argp = &wdata->args,
- .rpc_resp = &wdata->res,
- .rpc_cred = wdata->cred,
- };
- int status;
-
- dprintk("NFS call write %d @ %Ld\n", wdata->args.count,
- (long long) wdata->args.offset);
-
- wdata->args.bitmask = server->attr_bitmask;
- wdata->res.server = server;
- wdata->timestamp = jiffies;
- nfs_fattr_init(fattr);
- status = rpc_call_sync(server->client, &msg, rpcflags);
- dprintk("NFS reply write: %d\n", status);
- if (status < 0)
- return status;
- renew_lease(server, wdata->timestamp);
- nfs_post_op_update_inode(inode, fattr);
- return wdata->res.count;
-}
-
-static int nfs4_proc_write(struct nfs_write_data *wdata)
-{
- struct nfs4_exception exception = { };
- int err;
- do {
- err = nfs4_handle_exception(NFS_SERVER(wdata->inode),
- _nfs4_proc_write(wdata),
- &exception);
- } while (exception.retry);
- return err;
-}
-
-static int _nfs4_proc_commit(struct nfs_write_data *cdata)
-{
- struct inode *inode = cdata->inode;
- struct nfs_fattr *fattr = cdata->res.fattr;
- struct nfs_server *server = NFS_SERVER(inode);
- struct rpc_message msg = {
- .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT],
- .rpc_argp = &cdata->args,
- .rpc_resp = &cdata->res,
- .rpc_cred = cdata->cred,
- };
- int status;
-
- dprintk("NFS call commit %d @ %Ld\n", cdata->args.count,
- (long long) cdata->args.offset);
-
- cdata->args.bitmask = server->attr_bitmask;
- cdata->res.server = server;
- cdata->timestamp = jiffies;
- nfs_fattr_init(fattr);
- status = rpc_call_sync(server->client, &msg, 0);
- if (status >= 0)
- renew_lease(server, cdata->timestamp);
- dprintk("NFS reply commit: %d\n", status);
- if (status >= 0)
- nfs_post_op_update_inode(inode, fattr);
- return status;
-}
-
-static int nfs4_proc_commit(struct nfs_write_data *cdata)
-{
- struct nfs4_exception exception = { };
- int err;
- do {
- err = nfs4_handle_exception(NFS_SERVER(cdata->inode),
- _nfs4_proc_commit(cdata),
- &exception);
- } while (exception.retry);
- return err;
-}
-
/*
* Got race?
* We will need to arrange for the VFS layer to provide an atomic open.
nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
int flags, struct nameidata *nd)
{
+ struct path path = {
+ .mnt = nd->mnt,
+ .dentry = dentry,
+ };
struct nfs4_state *state;
struct rpc_cred *cred;
int status = 0;
- cred = rpcauth_lookupcred(NFS_SERVER(dir)->client->cl_auth, 0);
+ cred = rpcauth_lookupcred(NFS_CLIENT(dir)->cl_auth, 0);
if (IS_ERR(cred)) {
status = PTR_ERR(cred);
goto out;
}
- state = nfs4_do_open(dir, dentry, flags, sattr, cred);
+ state = nfs4_do_open(dir, &path, flags, sattr, cred);
put_rpccred(cred);
if (IS_ERR(state)) {
status = PTR_ERR(state);
status = nfs4_do_setattr(state->inode, &fattr, sattr, state);
if (status == 0)
nfs_setattr_update_inode(state->inode, sattr);
+ nfs_post_op_update_inode(state->inode, &fattr);
}
- if (status == 0 && nd != NULL && (nd->flags & LOOKUP_OPEN))
- status = nfs4_intent_set_file(nd, dentry, state);
+ if (status == 0 && (nd->flags & LOOKUP_OPEN) != 0)
+ status = nfs4_intent_set_file(nd, &path, state);
else
- nfs4_close_state(state, flags);
+ nfs4_close_state(&path, state, flags);
out:
return status;
}
static int _nfs4_proc_remove(struct inode *dir, struct qstr *name)
{
struct nfs_server *server = NFS_SERVER(dir);
- struct nfs4_remove_arg args = {
+ struct nfs_removeargs args = {
.fh = NFS_FH(dir),
- .name = name,
+ .name.len = name->len,
+ .name.name = name->name,
.bitmask = server->attr_bitmask,
};
- struct nfs_fattr dir_attr;
- struct nfs4_remove_res res = {
+ struct nfs_removeres res = {
.server = server,
- .dir_attr = &dir_attr,
};
struct rpc_message msg = {
- .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE],
- .rpc_argp = &args,
- .rpc_resp = &res,
+ .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE],
+ .rpc_argp = &args,
+ .rpc_resp = &res,
};
int status;
- nfs_fattr_init(res.dir_attr);
+ nfs_fattr_init(&res.dir_attr);
status = rpc_call_sync(server->client, &msg, 0);
if (status == 0) {
update_changeattr(dir, &res.cinfo);
- nfs_post_op_update_inode(dir, res.dir_attr);
+ nfs_post_op_update_inode(dir, &res.dir_attr);
}
return status;
}
}
struct unlink_desc {
- struct nfs4_remove_arg args;
- struct nfs4_remove_res res;
- struct nfs_fattr dir_attr;
+ struct nfs_removeargs args;
+ struct nfs_removeres res;
};
static int nfs4_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir,
struct nfs_server *server = NFS_SERVER(dir->d_inode);
struct unlink_desc *up;
- up = (struct unlink_desc *) kmalloc(sizeof(*up), GFP_KERNEL);
+ up = kmalloc(sizeof(*up), GFP_KERNEL);
if (!up)
return -ENOMEM;
up->args.fh = NFS_FH(dir->d_inode);
- up->args.name = name;
+ up->args.name.len = name->len;
+ up->args.name.name = name->name;
up->args.bitmask = server->attr_bitmask;
up->res.server = server;
- up->res.dir_attr = &up->dir_attr;
+ nfs_fattr_init(&up->res.dir_attr);
msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE];
msg->rpc_argp = &up->args;
if (msg->rpc_resp != NULL) {
up = container_of(msg->rpc_resp, struct unlink_desc, res);
update_changeattr(dir->d_inode, &up->res.cinfo);
- nfs_post_op_update_inode(dir->d_inode, up->res.dir_attr);
+ nfs_post_op_update_inode(dir->d_inode, &up->res.dir_attr);
kfree(up);
msg->rpc_resp = NULL;
msg->rpc_argp = NULL;
return err;
}
-static int _nfs4_proc_symlink(struct inode *dir, struct qstr *name,
- struct qstr *path, struct iattr *sattr, struct nfs_fh *fhandle,
- struct nfs_fattr *fattr)
+static int _nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
+ struct page *page, unsigned int len, struct iattr *sattr)
{
struct nfs_server *server = NFS_SERVER(dir);
- struct nfs_fattr dir_fattr;
+ struct nfs_fh fhandle;
+ struct nfs_fattr fattr, dir_fattr;
struct nfs4_create_arg arg = {
.dir_fh = NFS_FH(dir),
.server = server,
- .name = name,
+ .name = &dentry->d_name,
.attrs = sattr,
.ftype = NF4LNK,
.bitmask = server->attr_bitmask,
};
struct nfs4_create_res res = {
.server = server,
- .fh = fhandle,
- .fattr = fattr,
+ .fh = &fhandle,
+ .fattr = &fattr,
.dir_fattr = &dir_fattr,
};
struct rpc_message msg = {
};
int status;
- if (path->len > NFS4_MAXPATHLEN)
+ if (len > NFS4_MAXPATHLEN)
return -ENAMETOOLONG;
- arg.u.symlink = path;
- nfs_fattr_init(fattr);
+
+ arg.u.symlink.pages = &page;
+ arg.u.symlink.len = len;
+ nfs_fattr_init(&fattr);
nfs_fattr_init(&dir_fattr);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
- if (!status)
+ if (!status) {
update_changeattr(dir, &res.dir_cinfo);
- nfs_post_op_update_inode(dir, res.dir_fattr);
+ nfs_post_op_update_inode(dir, res.dir_fattr);
+ status = nfs_instantiate(dentry, &fhandle, &fattr);
+ }
return status;
}
-static int nfs4_proc_symlink(struct inode *dir, struct qstr *name,
- struct qstr *path, struct iattr *sattr, struct nfs_fh *fhandle,
- struct nfs_fattr *fattr)
+static int nfs4_proc_symlink(struct inode *dir, struct dentry *dentry,
+ struct page *page, unsigned int len, struct iattr *sattr)
{
struct nfs4_exception exception = { };
int err;
do {
err = nfs4_handle_exception(NFS_SERVER(dir),
- _nfs4_proc_symlink(dir, name, path, sattr,
- fhandle, fattr),
+ _nfs4_proc_symlink(dir, dentry, page,
+ len, sattr),
&exception);
} while (exception.retry);
return err;
dentry->d_parent->d_name.name,
dentry->d_name.name,
(unsigned long long)cookie);
- lock_kernel();
nfs4_setup_readdir(cookie, NFS_COOKIEVERF(dir), dentry, &args);
res.pgbase = args.pgbase;
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
if (status == 0)
memcpy(NFS_COOKIEVERF(dir), res.verifier.data, NFS4_VERIFIER_SIZE);
- unlock_kernel();
dprintk("%s: returns %d\n", __FUNCTION__, status);
return status;
}
*/
static void nfs4_renew_done(struct rpc_task *task, void *data)
{
- struct nfs4_client *clp = (struct nfs4_client *)task->tk_msg.rpc_argp;
+ struct nfs_client *clp = (struct nfs_client *)task->tk_msg.rpc_argp;
unsigned long timestamp = (unsigned long)data;
if (task->tk_status < 0) {
.rpc_call_done = nfs4_renew_done,
};
-int nfs4_proc_async_renew(struct nfs4_client *clp, struct rpc_cred *cred)
+int nfs4_proc_async_renew(struct nfs_client *clp, struct rpc_cred *cred)
{
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
&nfs4_renew_ops, (void *)jiffies);
}
-int nfs4_proc_renew(struct nfs4_client *clp, struct rpc_cred *cred)
+int nfs4_proc_renew(struct nfs_client *clp, struct rpc_cred *cred)
{
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENEW],
nfs4_set_cached_acl(inode, acl);
}
-static inline ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
+static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
{
struct page *pages[NFS4ACL_MAXPAGES];
struct nfs_getaclargs args = {
return ret;
}
+static ssize_t nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen)
+{
+ struct nfs4_exception exception = { };
+ ssize_t ret;
+ do {
+ ret = __nfs4_get_acl_uncached(inode, buf, buflen);
+ if (ret >= 0)
+ break;
+ ret = nfs4_handle_exception(NFS_SERVER(inode), ret, &exception);
+ } while (exception.retry);
+ return ret;
+}
+
static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen)
{
struct nfs_server *server = NFS_SERVER(inode);
return nfs4_get_acl_uncached(inode, buf, buflen);
}
-static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
+static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
{
struct nfs_server *server = NFS_SERVER(inode);
struct page *pages[NFS4ACL_MAXPAGES];
return -EOPNOTSUPP;
nfs_inode_return_delegation(inode);
buf_to_pages(buf, buflen, arg.acl_pages, &arg.acl_pgbase);
- ret = rpc_call_sync(NFS_SERVER(inode)->client, &msg, 0);
- if (ret == 0)
- nfs4_write_cached_acl(inode, buf, buflen);
+ ret = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
+ nfs_zap_caches(inode);
return ret;
}
+static int nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t buflen)
+{
+ struct nfs4_exception exception = { };
+ int err;
+ do {
+ err = nfs4_handle_exception(NFS_SERVER(inode),
+ __nfs4_proc_set_acl(inode, buf, buflen),
+ &exception);
+ } while (exception.retry);
+ return err;
+}
+
static int
nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server)
{
- struct nfs4_client *clp = server->nfs4_state;
+ struct nfs_client *clp = server->nfs_client;
if (!clp || task->tk_status >= 0)
return 0;
return 0;
}
-static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs4_client *clp)
+static int nfs4_wait_clnt_recover(struct rpc_clnt *clnt, struct nfs_client *clp)
{
sigset_t oldset;
int res;
might_sleep();
+ rwsem_acquire(&clp->cl_sem.dep_map, 0, 0, _RET_IP_);
+
rpc_clnt_sigmask(clnt, &oldset);
res = wait_on_bit(&clp->cl_state, NFS4CLNT_STATE_RECOVER,
nfs4_wait_bit_interruptible,
TASK_INTERRUPTIBLE);
rpc_clnt_sigunmask(clnt, &oldset);
+
+ rwsem_release(&clp->cl_sem.dep_map, 1, _RET_IP_);
return res;
}
/* This is the error handling routine for processes that are allowed
* to sleep.
*/
-int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception)
+static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception)
{
- struct nfs4_client *clp = server->nfs4_state;
+ struct nfs_client *clp = server->nfs_client;
int ret = errorcode;
exception->retry = 0;
if (ret == 0)
exception->retry = 1;
break;
+ case -NFS4ERR_FILE_OPEN:
case -NFS4ERR_GRACE:
case -NFS4ERR_DELAY:
ret = nfs4_delay(server->client, &exception->timeout);
return nfs4_map_errors(ret);
}
-int nfs4_proc_setclientid(struct nfs4_client *clp, u32 program, unsigned short port, struct rpc_cred *cred)
+int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short port, struct rpc_cred *cred)
{
nfs4_verifier sc_verifier;
struct nfs4_setclientid setclientid = {
.rpc_resp = clp,
.rpc_cred = cred,
};
- u32 *p;
+ __be32 *p;
int loop = 0;
int status;
- p = (u32*)sc_verifier.data;
+ p = (__be32*)sc_verifier.data;
*p++ = htonl((u32)clp->cl_boot_time.tv_sec);
*p = htonl((u32)clp->cl_boot_time.tv_nsec);
for(;;) {
setclientid.sc_name_len = scnprintf(setclientid.sc_name,
sizeof(setclientid.sc_name), "%s/%u.%u.%u.%u %s %u",
- clp->cl_ipaddr, NIPQUAD(clp->cl_addr.s_addr),
+ clp->cl_ipaddr, NIPQUAD(clp->cl_addr.sin_addr),
cred->cr_ops->cr_name,
clp->cl_id_uniquifier);
setclientid.sc_netid_len = scnprintf(setclientid.sc_netid,
return status;
}
-static int _nfs4_proc_setclientid_confirm(struct nfs4_client *clp, struct rpc_cred *cred)
+static int _nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred)
{
struct nfs_fsinfo fsinfo;
struct rpc_message msg = {
return status;
}
-int nfs4_proc_setclientid_confirm(struct nfs4_client *clp, struct rpc_cred *cred)
+int nfs4_proc_setclientid_confirm(struct nfs_client *clp, struct rpc_cred *cred)
{
long timeout;
int err;
if (status == 0)
nfs_post_op_update_inode(inode, &data->fattr);
}
- rpc_release_task(task);
+ rpc_put_task(task);
return status;
}
switch (err) {
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_EXPIRED:
- nfs4_schedule_state_recovery(server->nfs4_state);
case 0:
return 0;
}
{
struct inode *inode = state->inode;
struct nfs_server *server = NFS_SERVER(inode);
- struct nfs4_client *clp = server->nfs4_state;
+ struct nfs_client *clp = server->nfs_client;
struct nfs_lockt_args arg = {
.fh = NFS_FH(inode),
.fl = request,
if (status != 0)
goto out;
lsp = request->fl_u.nfs4_fl.owner;
- arg.lock_owner.id = lsp->ls_id;
+ arg.lock_owner.id = lsp->ls_id.id;
status = rpc_call_sync(server->client, &msg, 0);
switch (status) {
case 0:
case -NFS4ERR_DENIED:
status = 0;
}
+ request->fl_ops->fl_release_private(request);
out:
up_read(&clp->cl_sem);
return status;
default:
BUG();
}
- if (res < 0)
- printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n",
- __FUNCTION__);
return res;
}
break;
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_EXPIRED:
- nfs4_schedule_state_recovery(calldata->server->nfs4_state);
break;
default:
- if (nfs4_async_handle_error(task, calldata->server) == -EAGAIN) {
+ if (nfs4_async_handle_error(task, calldata->server) == -EAGAIN)
rpc_restart_call(task);
- }
}
}
{
struct nfs4_unlockdata *data;
+ /* Ensure this is an unlock - when canceling a lock, the
+ * canceled lock is passed in, and it won't be an unlock.
+ */
+ fl->fl_type = F_UNLCK;
+
data = nfs4_alloc_unlockdata(fl, ctx, lsp, seqid);
if (data == NULL) {
nfs_free_seqid(seqid);
return ERR_PTR(-ENOMEM);
}
- /* Unlock _before_ we do the RPC call */
- do_vfs_lock(fl->fl_file, fl);
return rpc_run_task(NFS_CLIENT(lsp->ls_state->inode), RPC_TASK_ASYNC, &nfs4_locku_ops, data);
}
struct rpc_task *task;
int status = 0;
- /* Is this a delegated lock? */
- if (test_bit(NFS_DELEGATED_STATE, &state->flags))
- goto out_unlock;
- /* Is this open_owner holding any locks on the server? */
- if (test_bit(LK_STATE_IN_USE, &state->flags) == 0)
- goto out_unlock;
-
status = nfs4_set_lock_state(state, request);
+ /* Unlock _before_ we do the RPC call */
+ request->fl_flags |= FL_EXISTS;
+ if (do_vfs_lock(request->fl_file, request) == -ENOENT)
+ goto out;
if (status != 0)
- goto out_unlock;
+ goto out;
+ /* Is this a delegated lock? */
+ if (test_bit(NFS_DELEGATED_STATE, &state->flags))
+ goto out;
lsp = request->fl_u.nfs4_fl.owner;
- status = -ENOMEM;
seqid = nfs_alloc_seqid(&lsp->ls_seqid);
+ status = -ENOMEM;
if (seqid == NULL)
- goto out_unlock;
+ goto out;
task = nfs4_do_unlck(request, request->fl_file->private_data, lsp, seqid);
status = PTR_ERR(task);
if (IS_ERR(task))
- goto out_unlock;
+ goto out;
status = nfs4_wait_for_completion_rpc_task(task);
- rpc_release_task(task);
- return status;
-out_unlock:
- do_vfs_lock(request->fl_file, request);
+ rpc_put_task(task);
+out:
return status;
}
if (p->arg.lock_seqid == NULL)
goto out_free;
p->arg.lock_stateid = &lsp->ls_stateid;
- p->arg.lock_owner.clientid = server->nfs4_state->cl_clientid;
- p->arg.lock_owner.id = lsp->ls_id;
+ p->arg.lock_owner.clientid = server->nfs_client->cl_clientid;
+ p->arg.lock_owner.id = lsp->ls_id.id;
p->lsp = lsp;
atomic_inc(&lsp->ls_count);
p->ctx = get_nfs_open_context(ctx);
memcpy(data->lsp->ls_stateid.data, data->res.stateid.data,
sizeof(data->lsp->ls_stateid.data));
data->lsp->ls_flags |= NFS_LOCK_INITIALIZED;
- renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp);
+ renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp);
}
nfs_increment_lock_seqid(data->rpc_status, data->arg.lock_seqid);
out:
task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp,
data->arg.lock_seqid);
if (!IS_ERR(task))
- rpc_release_task(task);
+ rpc_put_task(task);
dprintk("%s: cancelling lock!\n", __FUNCTION__);
} else
nfs_free_seqid(data->arg.lock_seqid);
ret = -EAGAIN;
} else
data->cancelled = 1;
- rpc_release_task(task);
+ rpc_put_task(task);
dprintk("%s: done, ret = %d!\n", __FUNCTION__, ret);
return ret;
}
struct nfs4_exception exception = { };
int err;
- /* Cache the lock if possible... */
- if (test_bit(NFS_DELEGATED_STATE, &state->flags))
- return 0;
do {
+ /* Cache the lock if possible... */
+ if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
+ return 0;
err = _nfs4_do_setlk(state, F_SETLK, request, 1);
if (err != -NFS4ERR_DELAY)
break;
if (err != 0)
return err;
do {
+ if (test_bit(NFS_DELEGATED_STATE, &state->flags) != 0)
+ return 0;
err = _nfs4_do_setlk(state, F_SETLK, request, 0);
if (err != -NFS4ERR_DELAY)
break;
static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
{
- struct nfs4_client *clp = state->owner->so_client;
+ struct nfs_client *clp = state->owner->so_client;
+ unsigned char fl_flags = request->fl_flags;
int status;
/* Is this a delegated open? */
- if (NFS_I(state->inode)->delegation_state != 0) {
- /* Yes: cache locks! */
- status = do_vfs_lock(request->fl_file, request);
- /* ...but avoid races with delegation recall... */
- if (status < 0 || test_bit(NFS_DELEGATED_STATE, &state->flags))
- return status;
- }
- down_read(&clp->cl_sem);
status = nfs4_set_lock_state(state, request);
if (status != 0)
goto out;
+ request->fl_flags |= FL_ACCESS;
+ status = do_vfs_lock(request->fl_file, request);
+ if (status < 0)
+ goto out;
+ down_read(&clp->cl_sem);
+ if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
+ struct nfs_inode *nfsi = NFS_I(state->inode);
+ /* Yes: cache locks! */
+ down_read(&nfsi->rwsem);
+ /* ...but avoid races with delegation recall... */
+ if (test_bit(NFS_DELEGATED_STATE, &state->flags)) {
+ request->fl_flags = fl_flags & ~FL_SLEEP;
+ status = do_vfs_lock(request->fl_file, request);
+ up_read(&nfsi->rwsem);
+ goto out_unlock;
+ }
+ up_read(&nfsi->rwsem);
+ }
status = _nfs4_do_setlk(state, cmd, request, 0);
if (status != 0)
- goto out;
+ goto out_unlock;
/* Note: we always want to sleep here! */
- request->fl_flags |= FL_SLEEP;
+ request->fl_flags = fl_flags | FL_SLEEP;
if (do_vfs_lock(request->fl_file, request) < 0)
printk(KERN_WARNING "%s: VFS is out of sync with lock manager!\n", __FUNCTION__);
-out:
+out_unlock:
up_read(&clp->cl_sem);
+out:
+ request->fl_flags = fl_flags;
return status;
}
return len;
}
-int nfs4_proc_fs_locations(struct inode *dir, struct dentry *dentry,
- struct nfs_fs_locations *fs_locations, struct page *page)
+int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
+ struct nfs4_fs_locations *fs_locations, struct page *page)
{
struct nfs_server *server = NFS_SERVER(dir);
u32 bitmask[2] = {
- [0] = server->attr_bitmask[0] | FATTR4_WORD0_FS_LOCATIONS,
- [1] = server->attr_bitmask[1],
+ [0] = FATTR4_WORD0_FSID | FATTR4_WORD0_FS_LOCATIONS,
+ [1] = FATTR4_WORD1_MOUNTED_ON_FILEID,
};
struct nfs4_fs_locations_arg args = {
.dir_fh = NFS_FH(dir),
- .name = &dentry->d_name,
+ .name = name,
.page = page,
.bitmask = bitmask,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS],
.rpc_argp = &args,
- .rpc_resp = &fs_locations,
+ .rpc_resp = fs_locations,
};
int status;
dprintk("%s: start\n", __FUNCTION__);
- fs_locations->fattr.valid = 0;
+ nfs_fattr_init(&fs_locations->fattr);
fs_locations->server = server;
+ fs_locations->nlocations = 0;
status = rpc_call_sync(server->client, &msg, 0);
dprintk("%s: returned status = %d\n", __FUNCTION__, status);
return status;
.recover_lock = nfs4_lock_expired,
};
-static struct inode_operations nfs4_file_inode_operations = {
+static const struct inode_operations nfs4_file_inode_operations = {
.permission = nfs_permission,
.getattr = nfs_getattr,
.setattr = nfs_setattr,
.listxattr = nfs4_listxattr,
};
-struct nfs_rpc_ops nfs_v4_clientops = {
+const struct nfs_rpc_ops nfs_v4_clientops = {
.version = 4, /* protocol version */
.dentry_ops = &nfs4_dentry_operations,
.dir_inode_ops = &nfs4_dir_inode_operations,
.getroot = nfs4_proc_get_root,
.getattr = nfs4_proc_getattr,
.setattr = nfs4_proc_setattr,
+ .lookupfh = nfs4_proc_lookupfh,
.lookup = nfs4_proc_lookup,
.access = nfs4_proc_access,
.readlink = nfs4_proc_readlink,
- .read = nfs4_proc_read,
- .write = nfs4_proc_write,
- .commit = nfs4_proc_commit,
.create = nfs4_proc_create,
.remove = nfs4_proc_remove,
.unlink_setup = nfs4_proc_unlink_setup,
.statfs = nfs4_proc_statfs,
.fsinfo = nfs4_proc_fsinfo,
.pathconf = nfs4_proc_pathconf,
+ .set_capabilities = nfs4_server_capabilities,
.decode_dirent = nfs4_decode_dirent,
.read_setup = nfs4_proc_read_setup,
.read_done = nfs4_read_done,
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff