| /* | |
| * 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 |