diff options
Diffstat (limited to 'ANDROID_3.4.5/fs/9p/v9fs.h')
| -rw-r--r-- | ANDROID_3.4.5/fs/9p/v9fs.h | 227 |
1 files changed, 0 insertions, 227 deletions
diff --git a/ANDROID_3.4.5/fs/9p/v9fs.h b/ANDROID_3.4.5/fs/9p/v9fs.h deleted file mode 100644 index e78956cb..00000000 --- a/ANDROID_3.4.5/fs/9p/v9fs.h +++ /dev/null @@ -1,227 +0,0 @@ -/* - * V9FS definitions. - * - * Copyright (C) 2004-2008 by Eric Van Hensbergen <ericvh@gmail.com> - * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov> - * - * 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_V9FS_H -#define FS_9P_V9FS_H - -#include <linux/backing-dev.h> - -/** - * enum p9_session_flags - option flags for each 9P session - * @V9FS_PROTO_2000U: whether or not to use 9P2000.u extensions - * @V9FS_PROTO_2000L: whether or not to use 9P2000.l extensions - * @V9FS_ACCESS_SINGLE: only the mounting user can access the hierarchy - * @V9FS_ACCESS_USER: a new attach will be issued for every user (default) - * @V9FS_ACCESS_CLIENT: Just like user, but access check is performed on client. - * @V9FS_ACCESS_ANY: use a single attach for all users - * @V9FS_ACCESS_MASK: bit mask of different ACCESS options - * @V9FS_POSIX_ACL: POSIX ACLs are enforced - * - * Session flags reflect options selected by users at mount time - */ -#define V9FS_ACCESS_ANY (V9FS_ACCESS_SINGLE | \ - V9FS_ACCESS_USER | \ - V9FS_ACCESS_CLIENT) -#define V9FS_ACCESS_MASK V9FS_ACCESS_ANY -#define V9FS_ACL_MASK V9FS_POSIX_ACL - -enum p9_session_flags { - V9FS_PROTO_2000U = 0x01, - V9FS_PROTO_2000L = 0x02, - V9FS_ACCESS_SINGLE = 0x04, - V9FS_ACCESS_USER = 0x08, - V9FS_ACCESS_CLIENT = 0x10, - V9FS_POSIX_ACL = 0x20 -}; - -/* possible values of ->cache */ -/** - * enum p9_cache_modes - user specified cache preferences - * @CACHE_NONE: do not cache data, dentries, or directory contents (default) - * @CACHE_LOOSE: cache data, dentries, and directory contents w/no consistency - * - * eventually support loose, tight, time, session, default always none - */ - -enum p9_cache_modes { - CACHE_NONE, - CACHE_LOOSE, - CACHE_FSCACHE, -}; - -/** - * struct v9fs_session_info - per-instance session information - * @flags: session options of type &p9_session_flags - * @nodev: set to 1 to disable device mapping - * @debug: debug level - * @afid: authentication handle - * @cache: cache mode of type &p9_cache_modes - * @cachetag: the tag of the cache associated with this session - * @fscache: session cookie associated with FS-Cache - * @options: copy of options string given by user - * @uname: string user name to mount hierarchy as - * @aname: mount specifier for remote hierarchy - * @maxdata: maximum data to be sent/recvd per protocol message - * @dfltuid: default numeric userid to mount hierarchy as - * @dfltgid: default numeric groupid to mount hierarchy as - * @uid: if %V9FS_ACCESS_SINGLE, the numeric uid which mounted the hierarchy - * @clnt: reference to 9P network client instantiated for this session - * @slist: reference to list of registered 9p sessions - * - * This structure holds state for each session instance established during - * a sys_mount() . - * - * Bugs: there seems to be a lot of state which could be condensed and/or - * removed. - */ - -struct v9fs_session_info { - /* options */ - unsigned char flags; - unsigned char nodev; - unsigned short debug; - unsigned int afid; - unsigned int cache; -#ifdef CONFIG_9P_FSCACHE - char *cachetag; - struct fscache_cookie *fscache; -#endif - - char *uname; /* user name to mount as */ - char *aname; /* name of remote hierarchy being mounted */ - unsigned int maxdata; /* max data for client interface */ - unsigned int dfltuid; /* default uid/muid for legacy support */ - unsigned int dfltgid; /* default gid for legacy support */ - u32 uid; /* if ACCESS_SINGLE, the uid that has access */ - struct p9_client *clnt; /* 9p client */ - struct list_head slist; /* list of sessions registered with v9fs */ - struct backing_dev_info bdi; - struct rw_semaphore rename_sem; -}; - -/* cache_validity flags */ -#define V9FS_INO_INVALID_ATTR 0x01 - -struct v9fs_inode { -#ifdef CONFIG_9P_FSCACHE - spinlock_t fscache_lock; - struct fscache_cookie *fscache; -#endif - struct p9_qid qid; - unsigned int cache_validity; - struct p9_fid *writeback_fid; - struct mutex v_mutex; - struct inode vfs_inode; -}; - -static inline struct v9fs_inode *V9FS_I(const struct inode *inode) -{ - return container_of(inode, struct v9fs_inode, vfs_inode); -} - -struct p9_fid *v9fs_session_init(struct v9fs_session_info *, const char *, - char *); -extern void v9fs_session_close(struct v9fs_session_info *v9ses); -extern void v9fs_session_cancel(struct v9fs_session_info *v9ses); -extern void v9fs_session_begin_cancel(struct v9fs_session_info *v9ses); -extern struct dentry *v9fs_vfs_lookup(struct inode *dir, struct dentry *dentry, - struct nameidata *nameidata); -extern int v9fs_vfs_unlink(struct inode *i, struct dentry *d); -extern int v9fs_vfs_rmdir(struct inode *i, struct dentry *d); -extern int v9fs_vfs_rename(struct inode *old_dir, struct dentry *old_dentry, - struct inode *new_dir, struct dentry *new_dentry); -extern void v9fs_vfs_put_link(struct dentry *dentry, struct nameidata *nd, - void *p); -extern struct inode *v9fs_inode_from_fid(struct v9fs_session_info *v9ses, - struct p9_fid *fid, - struct super_block *sb, int new); -extern const struct inode_operations v9fs_dir_inode_operations_dotl; -extern const struct inode_operations v9fs_file_inode_operations_dotl; -extern const struct inode_operations v9fs_symlink_inode_operations_dotl; -extern struct inode *v9fs_inode_from_fid_dotl(struct v9fs_session_info *v9ses, - struct p9_fid *fid, - struct super_block *sb, int new); - -/* other default globals */ -#define V9FS_PORT 564 -#define V9FS_DEFUSER "nobody" -#define V9FS_DEFANAME "" -#define V9FS_DEFUID (-2) -#define V9FS_DEFGID (-2) - -static inline struct v9fs_session_info *v9fs_inode2v9ses(struct inode *inode) -{ - return (inode->i_sb->s_fs_info); -} - -static inline struct v9fs_session_info *v9fs_dentry2v9ses(struct dentry *dentry) -{ - return dentry->d_sb->s_fs_info; -} - -static inline int v9fs_proto_dotu(struct v9fs_session_info *v9ses) -{ - return v9ses->flags & V9FS_PROTO_2000U; -} - -static inline int v9fs_proto_dotl(struct v9fs_session_info *v9ses) -{ - return v9ses->flags & V9FS_PROTO_2000L; -} - -/** - * v9fs_get_inode_from_fid - Helper routine to populate an inode by - * issuing a attribute request - * @v9ses: session information - * @fid: fid to issue attribute request for - * @sb: superblock on which to create inode - * - */ -static inline struct inode * -v9fs_get_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid, - struct super_block *sb) -{ - if (v9fs_proto_dotl(v9ses)) - return v9fs_inode_from_fid_dotl(v9ses, fid, sb, 0); - else - return v9fs_inode_from_fid(v9ses, fid, sb, 0); -} - -/** - * v9fs_get_new_inode_from_fid - Helper routine to populate an inode by - * issuing a attribute request - * @v9ses: session information - * @fid: fid to issue attribute request for - * @sb: superblock on which to create inode - * - */ -static inline struct inode * -v9fs_get_new_inode_from_fid(struct v9fs_session_info *v9ses, struct p9_fid *fid, - struct super_block *sb) -{ - if (v9fs_proto_dotl(v9ses)) - return v9fs_inode_from_fid_dotl(v9ses, fid, sb, 1); - else - return v9fs_inode_from_fid(v9ses, fid, sb, 1); -} - -#endif |