From 392e8802486cb573b916e746010e141a75f507e6 Mon Sep 17 00:00:00 2001 From: Kevin Date: Sat, 15 Nov 2014 09:58:27 +0800 Subject: init android origin source code --- ANDROID_3.4.5/fs/9p/fid.h | 50 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 ANDROID_3.4.5/fs/9p/fid.h (limited to 'ANDROID_3.4.5/fs/9p/fid.h') diff --git a/ANDROID_3.4.5/fs/9p/fid.h b/ANDROID_3.4.5/fs/9p/fid.h new file mode 100644 index 00000000..bb0b6e7f --- /dev/null +++ b/ANDROID_3.4.5/fs/9p/fid.h @@ -0,0 +1,50 @@ +/* + * V9FS FID Management + * + * Copyright (C) 2005 by Eric Van Hensbergen + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to: + * Free Software Foundation + * 51 Franklin Street, Fifth Floor + * Boston, MA 02111-1301 USA + * + */ +#ifndef FS_9P_FID_H +#define FS_9P_FID_H +#include + +/** + * struct v9fs_dentry - 9p private data stored in dentry d_fsdata + * @lock: protects the fidlist + * @fidlist: list of FIDs currently associated with this dentry + * + * This structure defines the 9p private data associated with + * a particular dentry. In particular, this private data is used + * to lookup which 9P FID handle should be used for a particular VFS + * operation. FID handles are associated with dentries instead of + * inodes in order to more closely map functionality to the Plan 9 + * expected behavior for FID reclaimation and tracking. + * + * See Also: Mapping FIDs to Linux VFS model in + * Design and Implementation of the Linux 9P File System documentation + */ +struct v9fs_dentry { + spinlock_t lock; /* protect fidlist */ + struct list_head fidlist; +}; + +struct p9_fid *v9fs_fid_lookup(struct dentry *dentry); +struct p9_fid *v9fs_fid_clone(struct dentry *dentry); +int v9fs_fid_add(struct dentry *dentry, struct p9_fid *fid); +struct p9_fid *v9fs_writeback_fid(struct dentry *dentry); +#endif -- cgit