#include <linux/nfs_page.h>
#include <linux/smp_lock.h>
#include <linux/namei.h>
+#include <linux/mount.h>
#include "nfs4_fs.h"
#include "delegation.h"
static int _nfs4_proc_open_confirm(struct rpc_clnt *clnt, const struct nfs_fh *fh, struct nfs4_state_owner *sp, nfs4_stateid *stateid, struct nfs_seqid *seqid);
static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *);
-static int nfs4_async_handle_error(struct rpc_task *, struct nfs_server *);
+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(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);
extern u32 *nfs4_decode_dirent(u32 *p, struct nfs_entry *entry, int plus);
extern struct rpc_procinfo nfs4_procedures[];
{
struct nfs_inode *nfsi = NFS_I(inode);
+ spin_lock(&inode->i_lock);
+ nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
if (cinfo->before == nfsi->change_attr && cinfo->atomic)
nfsi->change_attr = cinfo->after;
+ spin_unlock(&inode->i_lock);
}
/* Helper for asynchronous RPC calls */
struct inode *inode = state->inode;
open_flags &= (FMODE_READ|FMODE_WRITE);
- /* Protect against nfs4_find_state() */
+ /* Protect against nfs4_find_state_byowner() */
+ spin_lock(&state->owner->so_lock);
spin_lock(&inode->i_lock);
- state->state |= open_flags;
- /* NB! List reordering - see the reclaim code for why. */
- if ((open_flags & FMODE_WRITE) && 0 == state->nwriters++)
- list_move(&state->open_states, &state->owner->so_states);
+ memcpy(&state->stateid, stateid, sizeof(state->stateid));
+ if ((open_flags & FMODE_WRITE))
+ state->nwriters++;
if (open_flags & FMODE_READ)
state->nreaders++;
- memcpy(&state->stateid, stateid, sizeof(state->stateid));
+ nfs4_state_set_mode_locked(state, state->state | open_flags);
spin_unlock(&inode->i_lock);
+ spin_unlock(&state->owner->so_lock);
}
/*
o_arg->clientid = sp->so_client->cl_clientid;
status = rpc_call_sync(server->client, &msg, RPC_TASK_NOINTR);
+ if (status == 0) {
+ /* OPEN on anything except a regular file is disallowed in NFSv4 */
+ switch (o_res->f_attr->mode & S_IFMT) {
+ case S_IFREG:
+ break;
+ case S_IFLNK:
+ status = -ELOOP;
+ break;
+ case S_IFDIR:
+ status = -EISDIR;
+ break;
+ default:
+ status = -ENOTDIR;
+ }
+ }
+
nfs_increment_open_seqid(status, o_arg->seqid);
if (status != 0)
goto out;
- update_changeattr(dir, &o_res->cinfo);
+ if (o_arg->open_flags & O_CREAT) {
+ update_changeattr(dir, &o_res->cinfo);
+ nfs_post_op_update_inode(dir, o_res->dir_attr);
+ } else
+ nfs_refresh_inode(dir, o_res->dir_attr);
if(o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) {
status = _nfs4_proc_open_confirm(server->client, &o_res->fh,
sp, &o_res->stateid, o_arg->seqid);
struct inode *inode = state->inode;
struct nfs_server *server = NFS_SERVER(dir);
struct nfs_delegation *delegation = NFS_I(inode)->delegation;
- struct nfs_fattr f_attr = {
- .valid = 0,
- };
+ struct nfs_fattr f_attr, dir_attr;
struct nfs_openargs o_arg = {
.fh = NFS_FH(dir),
.open_flags = state->state,
};
struct nfs_openres o_res = {
.f_attr = &f_attr,
+ .dir_attr = &dir_attr,
.server = server,
};
int status = 0;
status = -ENOMEM;
if (o_arg.seqid == NULL)
goto out;
+ nfs_fattr_init(&f_attr);
+ nfs_fattr_init(&dir_attr);
status = _nfs4_proc_open(dir, sp, &o_arg, &o_res);
if (status != 0)
goto out_nodeleg;
}
up_read(&nfsi->rwsem);
up_read(&clp->cl_sem);
+ if (err != -EACCES)
+ nfs_inode_return_delegation(inode);
return err;
}
struct nfs4_client *clp = server->nfs4_state;
struct inode *inode = NULL;
int status;
- struct nfs_fattr f_attr = {
- .valid = 0,
- };
+ struct nfs_fattr f_attr, dir_attr;
struct nfs_openargs o_arg = {
.fh = NFS_FH(dir),
.open_flags = flags,
};
struct nfs_openres o_res = {
.f_attr = &f_attr,
+ .dir_attr = &dir_attr,
.server = server,
};
o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid);
if (o_arg.seqid == NULL)
return -ENOMEM;
+ nfs_fattr_init(&f_attr);
+ nfs_fattr_init(&dir_attr);
status = _nfs4_proc_open(dir, sp, &o_arg, &o_res);
if (status != 0)
goto out_err;
exception.retry = 1;
continue;
}
+ /*
+ * BAD_STATEID on OPEN means that the server cancelled our
+ * state before it received the OPEN_CONFIRM.
+ * Recover by retrying the request as per the discussion
+ * on Page 181 of RFC3530.
+ */
+ if (status == -NFS4ERR_BAD_STATEID) {
+ exception.retry = 1;
+ continue;
+ }
res = ERR_PTR(nfs4_handle_exception(NFS_SERVER(dir),
status, &exception));
} while (exception.retry);
};
int status;
- fattr->valid = 0;
+ nfs_fattr_init(fattr);
if (state != NULL) {
msg.rpc_cred = state->owner->so_cred;
struct nfs4_state *state;
struct nfs_closeargs arg;
struct nfs_closeres res;
+ struct nfs_fattr fattr;
};
static void nfs4_free_closedata(struct nfs4_closedata *calldata)
break;
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_EXPIRED:
- state->state = calldata->arg.open_flags;
nfs4_schedule_state_recovery(server->nfs4_state);
break;
default:
return;
}
}
- state->state = calldata->arg.open_flags;
+ nfs_refresh_inode(calldata->inode, calldata->res.fattr);
nfs4_free_closedata(calldata);
}
.rpc_resp = &calldata->res,
.rpc_cred = state->owner->so_cred,
};
- int mode = 0;
+ int mode = 0, old_mode;
int status;
status = nfs_wait_on_sequence(calldata->arg.seqid, task);
if (status != 0)
return;
- /* Don't reorder reads */
- smp_rmb();
/* Recalculate the new open mode in case someone reopened the file
* while we were waiting in line to be scheduled.
*/
- if (state->nreaders != 0)
- mode |= FMODE_READ;
- if (state->nwriters != 0)
- mode |= FMODE_WRITE;
- if (test_bit(NFS_DELEGATED_STATE, &state->flags))
- state->state = mode;
- if (mode == state->state) {
+ spin_lock(&state->owner->so_lock);
+ spin_lock(&calldata->inode->i_lock);
+ mode = old_mode = state->state;
+ if (state->nreaders == 0)
+ mode &= ~FMODE_READ;
+ if (state->nwriters == 0)
+ mode &= ~FMODE_WRITE;
+ 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)) {
nfs4_free_closedata(calldata);
task->tk_exit = NULL;
rpc_exit(task, 0);
return;
}
+ nfs_fattr_init(calldata->res.fattr);
if (mode != 0)
msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
calldata->arg.open_flags = mode;
*
* NOTE: Caller must be holding the sp->so_owner semaphore!
*/
-int nfs4_do_close(struct inode *inode, struct nfs4_state *state, mode_t mode)
+int nfs4_do_close(struct inode *inode, struct nfs4_state *state)
{
+ struct nfs_server *server = NFS_SERVER(inode);
struct nfs4_closedata *calldata;
int status = -ENOMEM;
calldata->arg.seqid = nfs_alloc_seqid(&state->owner->so_seqid);
if (calldata->arg.seqid == NULL)
goto out_free_calldata;
+ calldata->arg.bitmask = server->attr_bitmask;
+ calldata->res.fattr = &calldata->fattr;
+ calldata->res.server = server;
- status = nfs4_call_async(NFS_SERVER(inode)->client, nfs4_close_begin,
+ status = nfs4_call_async(server->client, nfs4_close_begin,
nfs4_close_done, calldata);
if (status == 0)
goto out;
return status;
}
-struct inode *
+static void nfs4_intent_set_file(struct nameidata *nd, struct dentry *dentry, struct nfs4_state *state)
+{
+ struct file *filp;
+
+ filp = lookup_instantiate_filp(nd, dentry, NULL);
+ if (!IS_ERR(filp)) {
+ struct nfs_open_context *ctx;
+ ctx = (struct nfs_open_context *)filp->private_data;
+ ctx->state = state;
+ } else
+ nfs4_close_state(state, nd->intent.open.flags);
+}
+
+struct dentry *
nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
{
struct iattr attr;
struct rpc_cred *cred;
struct nfs4_state *state;
+ struct dentry *res;
if (nd->flags & LOOKUP_CREATE) {
attr.ia_mode = nd->intent.open.create_mode;
cred = rpcauth_lookupcred(NFS_SERVER(dir)->client->cl_auth, 0);
if (IS_ERR(cred))
- return (struct inode *)cred;
+ return (struct dentry *)cred;
state = nfs4_do_open(dir, dentry, nd->intent.open.flags, &attr, cred);
put_rpccred(cred);
- if (IS_ERR(state))
- return (struct inode *)state;
- return state->inode;
+ if (IS_ERR(state)) {
+ if (PTR_ERR(state) == -ENOENT)
+ d_add(dentry, NULL);
+ return (struct dentry *)state;
+ }
+ res = d_add_unique(dentry, state->inode);
+ if (res != NULL)
+ dentry = res;
+ nfs4_intent_set_file(nd, dentry, state);
+ return res;
}
int
-nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags)
+nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, struct nameidata *nd)
{
struct rpc_cred *cred;
struct nfs4_state *state;
if (IS_ERR(state))
state = nfs4_do_open(dir, dentry, openflags, NULL, cred);
put_rpccred(cred);
- if (state == ERR_PTR(-ENOENT) && dentry->d_inode == 0)
- return 1;
- if (IS_ERR(state))
- return 0;
+ if (IS_ERR(state)) {
+ switch (PTR_ERR(state)) {
+ case -EPERM:
+ case -EACCES:
+ case -EDQUOT:
+ case -ENOSPC:
+ case -EROFS:
+ lookup_instantiate_filp(nd, (struct dentry *)state, NULL);
+ return 1;
+ case -ENOENT:
+ if (dentry->d_inode == NULL)
+ return 1;
+ }
+ goto out_drop;
+ }
inode = state->inode;
+ iput(inode);
if (inode == dentry->d_inode) {
- iput(inode);
+ nfs4_intent_set_file(nd, dentry, state);
return 1;
}
- d_drop(dentry);
nfs4_close_state(state, openflags);
- iput(inode);
+out_drop:
+ d_drop(dentry);
return 0;
}
static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle,
struct nfs_fsinfo *info)
{
- struct nfs_fattr * fattr = info->fattr;
struct nfs4_lookup_root_arg args = {
.bitmask = nfs4_fattr_bitmap,
};
struct nfs4_lookup_res res = {
.server = server,
- .fattr = fattr,
+ .fattr = info->fattr,
.fh = fhandle,
};
struct rpc_message msg = {
.rpc_argp = &args,
.rpc_resp = &res,
};
- fattr->valid = 0;
+ nfs_fattr_init(info->fattr);
return rpc_call_sync(server->client, &msg, 0);
}
q.len = p - q.name;
do {
- fattr->valid = 0;
+ nfs_fattr_init(fattr);
status = nfs4_handle_exception(server,
rpc_call_sync(server->client, &msg, 0),
&exception);
.rpc_resp = &res,
};
- fattr->valid = 0;
+ nfs_fattr_init(fattr);
return rpc_call_sync(server->client, &msg, 0);
}
{
struct rpc_cred *cred;
struct inode *inode = dentry->d_inode;
- struct nfs4_state *state;
+ struct nfs_open_context *ctx;
+ struct nfs4_state *state = NULL;
int status;
- fattr->valid = 0;
+ nfs_fattr_init(fattr);
cred = rpcauth_lookupcred(NFS_SERVER(inode)->client->cl_auth, 0);
if (IS_ERR(cred))
return PTR_ERR(cred);
- /* Search for an existing WRITE delegation first */
- state = nfs4_open_delegated(inode, FMODE_WRITE, cred);
- if (!IS_ERR(state)) {
- /* NB: nfs4_open_delegated() bumps the inode->i_count */
- iput(inode);
- } else {
- /* Search for an existing open(O_WRITE) stateid */
- state = nfs4_find_state(inode, cred, FMODE_WRITE);
- }
+
+ /* Search for an existing open(O_WRITE) file */
+ ctx = nfs_find_open_context(inode, cred, FMODE_WRITE);
+ if (ctx != NULL)
+ state = ctx->state;
status = nfs4_do_setattr(NFS_SERVER(inode), fattr,
NFS_FH(inode), sattr, state);
if (status == 0)
nfs_setattr_update_inode(inode, sattr);
- if (state != NULL)
- nfs4_close_state(state, FMODE_WRITE);
+ if (ctx != NULL)
+ put_nfs_open_context(ctx);
put_rpccred(cred);
return status;
}
.rpc_resp = &res,
};
- fattr->valid = 0;
+ nfs_fattr_init(fattr);
dprintk("NFS call lookup %s\n", name->name);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
dprintk("NFS call read %d @ %Ld\n", rdata->args.count,
(long long) rdata->args.offset);
- fattr->valid = 0;
+ nfs_fattr_init(fattr);
status = rpc_call_sync(server->client, &msg, flags);
if (!status)
renew_lease(server, timestamp);
dprintk("NFS call write %d @ %Ld\n", wdata->args.count,
(long long) wdata->args.offset);
- fattr->valid = 0;
+ nfs_fattr_init(fattr);
status = rpc_call_sync(server->client, &msg, rpcflags);
dprintk("NFS reply write: %d\n", status);
return status;
dprintk("NFS call commit %d @ %Ld\n", cdata->args.count,
(long long) cdata->args.offset);
- fattr->valid = 0;
+ nfs_fattr_init(fattr);
status = rpc_call_sync(server->client, &msg, 0);
dprintk("NFS reply commit: %d\n", status);
return status;
static int
nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
- int flags)
+ int flags, struct nameidata *nd)
{
struct nfs4_state *state;
struct rpc_cred *cred;
struct nfs_fattr fattr;
status = nfs4_do_setattr(NFS_SERVER(dir), &fattr,
NFS_FH(state->inode), sattr, state);
- if (status == 0) {
+ if (status == 0)
nfs_setattr_update_inode(state->inode, sattr);
- goto out;
- }
- } else if (flags != 0)
- goto out;
- nfs4_close_state(state, flags);
+ }
+ if (status == 0 && nd != NULL && (nd->flags & LOOKUP_OPEN))
+ nfs4_intent_set_file(nd, dentry, state);
+ else
+ nfs4_close_state(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 = {
.fh = NFS_FH(dir),
.name = name,
+ .bitmask = server->attr_bitmask,
+ };
+ struct nfs_fattr dir_attr;
+ struct nfs4_remove_res res = {
+ .server = server,
+ .dir_attr = &dir_attr,
};
- struct nfs4_change_info res;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE],
.rpc_argp = &args,
};
int status;
- status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
- if (status == 0)
- update_changeattr(dir, &res);
+ 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);
+ }
return status;
}
struct unlink_desc {
struct nfs4_remove_arg args;
- struct nfs4_change_info res;
+ struct nfs4_remove_res res;
+ struct nfs_fattr dir_attr;
};
static int nfs4_proc_unlink_setup(struct rpc_message *msg, struct dentry *dir,
struct qstr *name)
{
+ struct nfs_server *server = NFS_SERVER(dir->d_inode);
struct unlink_desc *up;
up = (struct unlink_desc *) kmalloc(sizeof(*up), GFP_KERNEL);
up->args.fh = NFS_FH(dir->d_inode);
up->args.name = name;
+ up->args.bitmask = server->attr_bitmask;
+ up->res.server = server;
+ up->res.dir_attr = &up->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);
+ update_changeattr(dir->d_inode, &up->res.cinfo);
+ nfs_post_op_update_inode(dir->d_inode, up->res.dir_attr);
kfree(up);
msg->rpc_resp = NULL;
msg->rpc_argp = NULL;
static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
struct inode *new_dir, struct qstr *new_name)
{
+ struct nfs_server *server = NFS_SERVER(old_dir);
struct nfs4_rename_arg arg = {
.old_dir = NFS_FH(old_dir),
.new_dir = NFS_FH(new_dir),
.old_name = old_name,
.new_name = new_name,
+ .bitmask = server->attr_bitmask,
+ };
+ struct nfs_fattr old_fattr, new_fattr;
+ struct nfs4_rename_res res = {
+ .server = server,
+ .old_fattr = &old_fattr,
+ .new_fattr = &new_fattr,
};
- struct nfs4_rename_res res = { };
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME],
.rpc_argp = &arg,
};
int status;
- status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
+ nfs_fattr_init(res.old_fattr);
+ nfs_fattr_init(res.new_fattr);
+ status = rpc_call_sync(server->client, &msg, 0);
if (!status) {
update_changeattr(old_dir, &res.old_cinfo);
+ nfs_post_op_update_inode(old_dir, res.old_fattr);
update_changeattr(new_dir, &res.new_cinfo);
+ nfs_post_op_update_inode(new_dir, res.new_fattr);
}
return status;
}
static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
{
+ struct nfs_server *server = NFS_SERVER(inode);
struct nfs4_link_arg arg = {
.fh = NFS_FH(inode),
.dir_fh = NFS_FH(dir),
.name = name,
+ .bitmask = server->attr_bitmask,
+ };
+ struct nfs_fattr fattr, dir_attr;
+ struct nfs4_link_res res = {
+ .server = server,
+ .fattr = &fattr,
+ .dir_attr = &dir_attr,
};
- struct nfs4_change_info cinfo = { };
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LINK],
.rpc_argp = &arg,
- .rpc_resp = &cinfo,
+ .rpc_resp = &res,
};
int status;
- status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
- if (!status)
- update_changeattr(dir, &cinfo);
+ nfs_fattr_init(res.fattr);
+ nfs_fattr_init(res.dir_attr);
+ status = rpc_call_sync(server->client, &msg, 0);
+ if (!status) {
+ update_changeattr(dir, &res.cinfo);
+ nfs_post_op_update_inode(dir, res.dir_attr);
+ nfs_refresh_inode(inode, res.fattr);
+ }
return status;
}
struct nfs_fattr *fattr)
{
struct nfs_server *server = NFS_SERVER(dir);
+ struct nfs_fattr dir_fattr;
struct nfs4_create_arg arg = {
.dir_fh = NFS_FH(dir),
.server = server,
.server = server,
.fh = fhandle,
.fattr = fattr,
+ .dir_fattr = &dir_fattr,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SYMLINK],
if (path->len > NFS4_MAXPATHLEN)
return -ENAMETOOLONG;
arg.u.symlink = path;
- fattr->valid = 0;
+ nfs_fattr_init(fattr);
+ nfs_fattr_init(&dir_fattr);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
if (!status)
update_changeattr(dir, &res.dir_cinfo);
+ nfs_post_op_update_inode(dir, res.dir_fattr);
return status;
}
{
struct nfs_server *server = NFS_SERVER(dir);
struct nfs_fh fhandle;
- struct nfs_fattr fattr;
+ struct nfs_fattr fattr, dir_fattr;
struct nfs4_create_arg arg = {
.dir_fh = NFS_FH(dir),
.server = server,
.server = server,
.fh = &fhandle,
.fattr = &fattr,
+ .dir_fattr = &dir_fattr,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE],
};
int status;
- fattr.valid = 0;
+ nfs_fattr_init(&fattr);
+ nfs_fattr_init(&dir_fattr);
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
if (!status) {
update_changeattr(dir, &res.dir_cinfo);
+ nfs_post_op_update_inode(dir, res.dir_fattr);
status = nfs_instantiate(dentry, &fhandle, &fattr);
}
return status;
{
struct nfs_server *server = NFS_SERVER(dir);
struct nfs_fh fh;
- struct nfs_fattr fattr;
+ struct nfs_fattr fattr, dir_fattr;
struct nfs4_create_arg arg = {
.dir_fh = NFS_FH(dir),
.server = server,
.server = server,
.fh = &fh,
.fattr = &fattr,
+ .dir_fattr = &dir_fattr,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CREATE],
int status;
int mode = sattr->ia_mode;
- fattr.valid = 0;
+ nfs_fattr_init(&fattr);
+ nfs_fattr_init(&dir_fattr);
BUG_ON(!(sattr->ia_valid & ATTR_MODE));
BUG_ON(!S_ISFIFO(mode) && !S_ISBLK(mode) && !S_ISCHR(mode) && !S_ISSOCK(mode));
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
if (status == 0) {
update_changeattr(dir, &res.dir_cinfo);
+ nfs_post_op_update_inode(dir, res.dir_fattr);
status = nfs_instantiate(dentry, &fh, &fattr);
}
return status;
.rpc_resp = fsstat,
};
- fsstat->fattr->valid = 0;
+ nfs_fattr_init(fsstat->fattr);
return rpc_call_sync(server->client, &msg, 0);
}
static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fsinfo *fsinfo)
{
- fsinfo->fattr->valid = 0;
+ nfs_fattr_init(fsinfo->fattr);
return nfs4_do_fsinfo(server, fhandle, fsinfo);
}
return 0;
}
- pathconf->fattr->valid = 0;
+ nfs_fattr_init(pathconf->fattr);
return rpc_call_sync(server->client, &msg, 0);
}
rpc_restart_call(task);
return;
}
- if (task->tk_status >= 0)
+ if (task->tk_status >= 0) {
renew_lease(NFS_SERVER(inode), data->timestamp);
+ nfs_post_op_update_inode(inode, data->res.fattr);
+ }
/* Call back common NFS writeback processing */
nfs_writeback_done(task);
}
.rpc_cred = data->cred,
};
struct inode *inode = data->inode;
+ struct nfs_server *server = NFS_SERVER(inode);
int stable;
int flags;
} else
stable = NFS_UNSTABLE;
data->args.stable = stable;
+ data->args.bitmask = server->attr_bitmask;
+ data->res.server = server;
data->timestamp = jiffies;
rpc_restart_call(task);
return;
}
+ if (task->tk_status >= 0)
+ nfs_post_op_update_inode(inode, data->res.fattr);
/* Call back common NFS writeback processing */
nfs_commit_done(task);
}
.rpc_cred = data->cred,
};
struct inode *inode = data->inode;
+ struct nfs_server *server = NFS_SERVER(inode);
int flags;
+ data->args.bitmask = server->attr_bitmask;
+ data->res.server = server;
+
/* Set the initial flags for the task. */
flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
return 0;
}
-/*
- * We will need to arrange for the VFS layer to provide an atomic open.
- * Until then, this open method is prone to inefficiency and race conditions
- * due to the lookup, potential create, and open VFS calls from sys_open()
- * placed on the wire.
- */
-static int
-nfs4_proc_file_open(struct inode *inode, struct file *filp)
-{
- struct dentry *dentry = filp->f_dentry;
- struct nfs_open_context *ctx;
- struct nfs4_state *state = NULL;
- struct rpc_cred *cred;
- int status = -ENOMEM;
-
- dprintk("nfs4_proc_file_open: starting on (%.*s/%.*s)\n",
- (int)dentry->d_parent->d_name.len,
- dentry->d_parent->d_name.name,
- (int)dentry->d_name.len, dentry->d_name.name);
-
-
- /* Find our open stateid */
- cred = rpcauth_lookupcred(NFS_SERVER(inode)->client->cl_auth, 0);
- if (IS_ERR(cred))
- return PTR_ERR(cred);
- ctx = alloc_nfs_open_context(dentry, cred);
- put_rpccred(cred);
- if (unlikely(ctx == NULL))
- return -ENOMEM;
- status = -EIO; /* ERACE actually */
- state = nfs4_find_state(inode, cred, filp->f_mode);
- if (unlikely(state == NULL))
- goto no_state;
- ctx->state = state;
- nfs4_close_state(state, filp->f_mode);
- ctx->mode = filp->f_mode;
- nfs_file_set_open_context(filp, ctx);
- put_nfs_open_context(ctx);
- if (filp->f_mode & FMODE_WRITE)
- nfs_begin_data_update(inode);
- return 0;
-no_state:
- printk(KERN_WARNING "NFS: v4 raced in function %s\n", __FUNCTION__);
- put_nfs_open_context(ctx);
- return status;
-}
-
-/*
- * Release our state
- */
-static int
-nfs4_proc_file_release(struct inode *inode, struct file *filp)
-{
- if (filp->f_mode & FMODE_WRITE)
- nfs_end_data_update(inode);
- nfs_file_clear_open_context(filp);
- return 0;
-}
-
static inline int nfs4_server_supports_acls(struct nfs_server *server)
{
return (server->caps & NFS_CAP_ACLS)
return -ENOMEM;
args.acl_pages[0] = localpage;
args.acl_pgbase = 0;
- args.acl_len = PAGE_SIZE;
+ resp_len = args.acl_len = PAGE_SIZE;
} else {
resp_buf = buf;
buf_to_pages(buf, buflen, args.acl_pages, &args.acl_pgbase);
if (!nfs4_server_supports_acls(server))
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)
}
static int
-nfs4_async_handle_error(struct rpc_task *task, struct nfs_server *server)
+nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server)
{
struct nfs4_client *clp = server->nfs4_state;
/* This is the error handling routine for processes that are allowed
* to sleep.
*/
-int nfs4_handle_exception(struct nfs_server *server, int errorcode, struct nfs4_exception *exception)
+int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception)
{
struct nfs4_client *clp = server->nfs4_state;
int ret = errorcode;
case -NFS4ERR_GRACE:
case -NFS4ERR_DELAY:
ret = nfs4_delay(server->client, &exception->timeout);
- if (ret == 0)
- exception->retry = 1;
- break;
+ if (ret != 0)
+ break;
case -NFS4ERR_OLD_STATEID:
- if (ret == 0)
- exception->retry = 1;
+ exception->retry = 1;
}
/* We failed to handle the error */
return nfs4_map_errors(ret);
return res;
}
-static int _nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
+struct nfs4_unlockdata {
+ struct nfs_lockargs arg;
+ struct nfs_locku_opargs luargs;
+ struct nfs_lockres res;
+ struct nfs4_lock_state *lsp;
+ struct nfs_open_context *ctx;
+ atomic_t refcount;
+ struct completion completion;
+};
+
+static void nfs4_locku_release_calldata(struct nfs4_unlockdata *calldata)
{
- struct inode *inode = state->inode;
- struct nfs_server *server = NFS_SERVER(inode);
- struct nfs_lockargs arg = {
- .fh = NFS_FH(inode),
- .type = nfs4_lck_type(cmd, request),
- .offset = request->fl_start,
- .length = nfs4_lck_length(request),
- };
- struct nfs_lockres res = {
- .server = server,
- };
+ if (atomic_dec_and_test(&calldata->refcount)) {
+ nfs_free_seqid(calldata->luargs.seqid);
+ nfs4_put_lock_state(calldata->lsp);
+ put_nfs_open_context(calldata->ctx);
+ kfree(calldata);
+ }
+}
+
+static void nfs4_locku_complete(struct nfs4_unlockdata *calldata)
+{
+ complete(&calldata->completion);
+ nfs4_locku_release_calldata(calldata);
+}
+
+static void nfs4_locku_done(struct rpc_task *task)
+{
+ struct nfs4_unlockdata *calldata = (struct nfs4_unlockdata *)task->tk_calldata;
+
+ nfs_increment_lock_seqid(task->tk_status, calldata->luargs.seqid);
+ switch (task->tk_status) {
+ case 0:
+ memcpy(calldata->lsp->ls_stateid.data,
+ calldata->res.u.stateid.data,
+ sizeof(calldata->lsp->ls_stateid.data));
+ break;
+ case -NFS4ERR_STALE_STATEID:
+ case -NFS4ERR_EXPIRED:
+ nfs4_schedule_state_recovery(calldata->res.server->nfs4_state);
+ break;
+ default:
+ if (nfs4_async_handle_error(task, calldata->res.server) == -EAGAIN) {
+ rpc_restart_call(task);
+ return;
+ }
+ }
+ nfs4_locku_complete(calldata);
+}
+
+static void nfs4_locku_begin(struct rpc_task *task)
+{
+ struct nfs4_unlockdata *calldata = (struct nfs4_unlockdata *)task->tk_calldata;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU],
- .rpc_argp = &arg,
- .rpc_resp = &res,
- .rpc_cred = state->owner->so_cred,
+ .rpc_argp = &calldata->arg,
+ .rpc_resp = &calldata->res,
+ .rpc_cred = calldata->lsp->ls_state->owner->so_cred,
};
+ int status;
+
+ status = nfs_wait_on_sequence(calldata->luargs.seqid, task);
+ if (status != 0)
+ return;
+ if ((calldata->lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0) {
+ nfs4_locku_complete(calldata);
+ task->tk_exit = NULL;
+ rpc_exit(task, 0);
+ return;
+ }
+ rpc_call_setup(task, &msg, 0);
+}
+
+static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
+{
+ struct nfs4_unlockdata *calldata;
+ struct inode *inode = state->inode;
+ struct nfs_server *server = NFS_SERVER(inode);
struct nfs4_lock_state *lsp;
- struct nfs_locku_opargs luargs;
int status;
-
+
status = nfs4_set_lock_state(state, request);
if (status != 0)
- goto out;
+ return status;
lsp = request->fl_u.nfs4_fl.owner;
/* We might have lost the locks! */
if ((lsp->ls_flags & NFS_LOCK_INITIALIZED) == 0)
- goto out;
- luargs.seqid = nfs_alloc_seqid(&lsp->ls_seqid);
- status = -ENOMEM;
- if (luargs.seqid == NULL)
- goto out;
- memcpy(luargs.stateid.data, lsp->ls_stateid.data, sizeof(luargs.stateid.data));
- arg.u.locku = &luargs;
- status = rpc_call_sync(server->client, &msg, RPC_TASK_NOINTR);
- nfs_increment_lock_seqid(status, luargs.seqid);
-
- if (status == 0)
- memcpy(lsp->ls_stateid.data, res.u.stateid.data,
- sizeof(lsp->ls_stateid.data));
- nfs_free_seqid(luargs.seqid);
-out:
+ return 0;
+ calldata = kmalloc(sizeof(*calldata), GFP_KERNEL);
+ if (calldata == NULL)
+ return -ENOMEM;
+ calldata->luargs.seqid = nfs_alloc_seqid(&lsp->ls_seqid);
+ if (calldata->luargs.seqid == NULL) {
+ kfree(calldata);
+ return -ENOMEM;
+ }
+ calldata->luargs.stateid = &lsp->ls_stateid;
+ calldata->arg.fh = NFS_FH(inode);
+ calldata->arg.type = nfs4_lck_type(cmd, request);
+ calldata->arg.offset = request->fl_start;
+ calldata->arg.length = nfs4_lck_length(request);
+ calldata->arg.u.locku = &calldata->luargs;
+ calldata->res.server = server;
+ calldata->lsp = lsp;
+ atomic_inc(&lsp->ls_count);
+
+ /* Ensure we don't close file until we're done freeing locks! */
+ calldata->ctx = get_nfs_open_context((struct nfs_open_context*)request->fl_file->private_data);
+
+ atomic_set(&calldata->refcount, 2);
+ init_completion(&calldata->completion);
+
+ status = nfs4_call_async(NFS_SERVER(inode)->client, nfs4_locku_begin,
+ nfs4_locku_done, calldata);
if (status == 0)
- do_vfs_lock(request->fl_file, request);
+ wait_for_completion_interruptible(&calldata->completion);
+ do_vfs_lock(request->fl_file, request);
+ nfs4_locku_release_calldata(calldata);
return status;
}
-static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
-{
- struct nfs4_exception exception = { };
- int err;
-
- do {
- err = nfs4_handle_exception(NFS_SERVER(state->inode),
- _nfs4_proc_unlck(state, cmd, request),
- &exception);
- } while (exception.retry);
- return err;
-}
-
static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *request, int reclaim)
{
struct inode *inode = state->inode;
struct nfs_server *server = NFS_SERVER(inode);
struct nfs4_lock_state *lsp = request->fl_u.nfs4_fl.owner;
+ struct nfs_lock_opargs largs = {
+ .lock_stateid = &lsp->ls_stateid,
+ .open_stateid = &state->stateid,
+ .lock_owner = {
+ .clientid = server->nfs4_state->cl_clientid,
+ .id = lsp->ls_id,
+ },
+ .reclaim = reclaim,
+ };
struct nfs_lockargs arg = {
.fh = NFS_FH(inode),
.type = nfs4_lck_type(cmd, request),
.offset = request->fl_start,
.length = nfs4_lck_length(request),
+ .u = {
+ .lock = &largs,
+ },
};
struct nfs_lockres res = {
.server = server,
.rpc_resp = &res,
.rpc_cred = state->owner->so_cred,
};
- struct nfs_lock_opargs largs = {
- .reclaim = reclaim,
- .new_lock_owner = 0,
- };
- struct nfs_seqid *lock_seqid;
int status = -ENOMEM;
- lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid);
- if (lock_seqid == NULL)
+ largs.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid);
+ if (largs.lock_seqid == NULL)
return -ENOMEM;
if (!(lsp->ls_seqid.flags & NFS_SEQID_CONFIRMED)) {
struct nfs4_state_owner *owner = state->owner;
- struct nfs_open_to_lock otl = {
- .lock_owner = {
- .clientid = server->nfs4_state->cl_clientid,
- },
- };
-
- otl.lock_seqid = lock_seqid;
- otl.lock_owner.id = lsp->ls_id;
- memcpy(&otl.open_stateid, &state->stateid, sizeof(otl.open_stateid));
- largs.u.open_lock = &otl;
+
+ largs.open_seqid = nfs_alloc_seqid(&owner->so_seqid);
+ if (largs.open_seqid == NULL)
+ goto out;
largs.new_lock_owner = 1;
- arg.u.lock = &largs;
- otl.open_seqid = nfs_alloc_seqid(&owner->so_seqid);
- if (otl.open_seqid != NULL) {
- status = rpc_call_sync(server->client, &msg, RPC_TASK_NOINTR);
- /* increment seqid on success, and seqid mutating errors */
- nfs_increment_open_seqid(status, otl.open_seqid);
- nfs_free_seqid(otl.open_seqid);
+ status = rpc_call_sync(server->client, &msg, RPC_TASK_NOINTR);
+ /* increment open seqid on success, and seqid mutating errors */
+ if (largs.new_lock_owner != 0) {
+ nfs_increment_open_seqid(status, largs.open_seqid);
+ if (status == 0)
+ nfs_confirm_seqid(&lsp->ls_seqid, 0);
}
- if (status == 0)
- nfs_confirm_seqid(&lsp->ls_seqid, 0);
- } else {
- struct nfs_exist_lock el;
- memcpy(&el.stateid, &lsp->ls_stateid, sizeof(el.stateid));
- largs.u.exist_lock = ⪙
- arg.u.lock = &largs;
- el.seqid = lock_seqid;
+ nfs_free_seqid(largs.open_seqid);
+ } else
status = rpc_call_sync(server->client, &msg, RPC_TASK_NOINTR);
- }
- /* increment seqid on success, and seqid mutating errors*/
- nfs_increment_lock_seqid(status, lock_seqid);
+ /* increment lock seqid on success, and seqid mutating errors*/
+ nfs_increment_lock_seqid(status, largs.lock_seqid);
/* save the returned stateid. */
if (status == 0) {
- memcpy(lsp->ls_stateid.data, res.u.stateid.data, sizeof(lsp->ls_stateid.data));
+ memcpy(lsp->ls_stateid.data, res.u.stateid.data,
+ sizeof(lsp->ls_stateid.data));
lsp->ls_flags |= NFS_LOCK_INITIALIZED;
} else if (status == -NFS4ERR_DENIED)
status = -EAGAIN;
- nfs_free_seqid(lock_seqid);
+out:
+ nfs_free_seqid(largs.lock_seqid);
return status;
}
.read_setup = nfs4_proc_read_setup,
.write_setup = nfs4_proc_write_setup,
.commit_setup = nfs4_proc_commit_setup,
- .file_open = nfs4_proc_file_open,
- .file_release = nfs4_proc_file_release,
+ .file_open = nfs_open,
+ .file_release = nfs_release,
.lock = nfs4_proc_lock,
.clear_acl_cache = nfs4_zap_acl_attr,
};