-/*
- * 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;
-}
-