diff options
Diffstat (limited to 'fs/9p/fid.h')
| -rw-r--r-- | fs/9p/fid.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/fs/9p/fid.h b/fs/9p/fid.h new file mode 100644 index 000000000..8a4e8cd12 --- /dev/null +++ b/fs/9p/fid.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * V9FS FID Management + * + * Copyright (C) 2005 by Eric Van Hensbergen <ericvh@gmail.com> + */ +#ifndef FS_9P_FID_H +#define FS_9P_FID_H +#include <linux/list.h> + +struct p9_fid *v9fs_fid_lookup(struct dentry *dentry); +static inline struct p9_fid *v9fs_parent_fid(struct dentry *dentry) +{ + return v9fs_fid_lookup(dentry->d_parent); +} +void v9fs_fid_add(struct dentry *dentry, struct p9_fid **fid); +struct p9_fid *v9fs_writeback_fid(struct dentry *dentry); +void v9fs_open_fid_add(struct inode *inode, struct p9_fid **fid); +static inline struct p9_fid *clone_fid(struct p9_fid *fid) +{ + return IS_ERR(fid) ? fid : p9_client_walk(fid, 0, NULL, 1); +} +static inline struct p9_fid *v9fs_fid_clone(struct dentry *dentry) +{ + struct p9_fid *fid, *nfid; + + fid = v9fs_fid_lookup(dentry); + if (!fid || IS_ERR(fid)) + return fid; + + nfid = clone_fid(fid); + p9_fid_put(fid); + return nfid; +} +#endif |