| /* |
| * 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 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, int mode, dev_t); |
| int v9fs_init_inode(struct v9fs_session_info *v9ses, |
| struct inode *inode, int 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); |
| |
| ssize_t v9fs_file_readn(struct file *, char *, char __user *, u32, u64); |
| ssize_t v9fs_fid_readn(struct p9_fid *, char *, char __user *, u32, u64); |
| 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); |
| ssize_t v9fs_file_write_internal(struct inode *, struct p9_fid *, |
| const char __user *, size_t, loff_t *, int); |
| 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 |