mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 20:53:53 +08:00
87 lines
3.6 KiB
C
87 lines
3.6 KiB
C
/*
|
|
* V9FS VFS extensions.
|
|
*
|
|
* Copyright (C) 2004 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_VFS_H
|
|
#define FS_9P_V9FS_VFS_H
|
|
|
|
/* plan9 semantics are that created files are implicitly opened.
|
|
* But linux semantics are that you call create, then open.
|
|
* the plan9 approach is superior as it provides an atomic
|
|
* open.
|
|
* we track the create fid here. When the file is opened, if fidopen is
|
|
* non-zero, we use the fid and can skip some steps.
|
|
* there may be a better way to do this, but I don't know it.
|
|
* one BAD way is to clunk the fid on create, then open it again:
|
|
* you lose the atomicity of file open
|
|
*/
|
|
|
|
/* special case:
|
|
* unlink calls remove, which is an implicit clunk. So we have to track
|
|
* that kind of thing so that we don't try to clunk a dead fid.
|
|
*/
|
|
#define P9_LOCK_TIMEOUT (30*HZ)
|
|
|
|
extern struct file_system_type v9fs_fs_type;
|
|
extern const struct address_space_operations v9fs_addr_operations;
|
|
extern const struct file_operations v9fs_file_operations;
|
|
extern const struct file_operations v9fs_file_operations_dotl;
|
|
extern const struct file_operations v9fs_dir_operations;
|
|
extern const struct file_operations v9fs_dir_operations_dotl;
|
|
extern const struct dentry_operations v9fs_dentry_operations;
|
|
extern const struct dentry_operations v9fs_cached_dentry_operations;
|
|
extern const struct file_operations v9fs_cached_file_operations;
|
|
extern const struct file_operations v9fs_cached_file_operations_dotl;
|
|
extern const struct file_operations v9fs_mmap_file_operations;
|
|
extern const struct file_operations v9fs_mmap_file_operations_dotl;
|
|
extern struct kmem_cache *v9fs_inode_cache;
|
|
|
|
struct inode *v9fs_alloc_inode(struct super_block *sb);
|
|
void v9fs_destroy_inode(struct inode *inode);
|
|
struct inode *v9fs_get_inode(struct super_block *sb, umode_t mode, dev_t);
|
|
int v9fs_init_inode(struct v9fs_session_info *v9ses,
|
|
struct inode *inode, umode_t mode, dev_t);
|
|
void v9fs_evict_inode(struct inode *inode);
|
|
ino_t v9fs_qid2ino(struct p9_qid *qid);
|
|
void v9fs_stat2inode(struct p9_wstat *, struct inode *, struct super_block *);
|
|
void v9fs_stat2inode_dotl(struct p9_stat_dotl *, struct inode *);
|
|
int v9fs_dir_release(struct inode *inode, struct file *filp);
|
|
int v9fs_file_open(struct inode *inode, struct file *file);
|
|
void v9fs_inode2stat(struct inode *inode, struct p9_wstat *stat);
|
|
int v9fs_uflags2omode(int uflags, int extended);
|
|
|
|
void v9fs_blank_wstat(struct p9_wstat *wstat);
|
|
int v9fs_vfs_setattr_dotl(struct dentry *, struct iattr *);
|
|
int v9fs_file_fsync_dotl(struct file *filp, loff_t start, loff_t end,
|
|
int datasync);
|
|
int v9fs_refresh_inode(struct p9_fid *fid, struct inode *inode);
|
|
int v9fs_refresh_inode_dotl(struct p9_fid *fid, struct inode *inode);
|
|
static inline void v9fs_invalidate_inode_attr(struct inode *inode)
|
|
{
|
|
struct v9fs_inode *v9inode;
|
|
v9inode = V9FS_I(inode);
|
|
v9inode->cache_validity |= V9FS_INO_INVALID_ATTR;
|
|
return;
|
|
}
|
|
|
|
int v9fs_open_to_dotl_flags(int flags);
|
|
#endif
|