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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_GFS_H
#define _SYS_GFS_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/vnode.h>
#include <sys/mutex.h>
#include <sys/dirent.h>
#include <sys/uio.h>
#include <sys/list.h>
#ifdef __cplusplus
extern "C" {
#endif
#define GFS_CACHE_VNODE 0x1
typedef struct gfs_dirent {
char *gfse_name; /* entry name */
vnode_t *(*gfse_ctor)(vnode_t *); /* constructor */
int gfse_flags; /* flags */
list_node_t gfse_link; /* dynamic list */
vnode_t *gfse_vnode; /* cached vnode */
} gfs_dirent_t;
typedef enum gfs_type {
GFS_DIR,
GFS_FILE
} gfs_type_t;
typedef struct gfs_file {
vnode_t *gfs_vnode; /* current vnode */
vnode_t *gfs_parent; /* parent vnode */
size_t gfs_size; /* size of private data structure */
gfs_type_t gfs_type; /* type of vnode */
int gfs_index; /* index in parent dir */
ino64_t gfs_ino; /* inode for this vnode */
} gfs_file_t;
typedef int (*gfs_readdir_cb)(vnode_t *, struct dirent64 *, int *, offset_t *,
offset_t *, void *);
typedef int (*gfs_lookup_cb)(vnode_t *, const char *, vnode_t **, ino64_t *);
typedef ino64_t (*gfs_inode_cb)(vnode_t *, int);
typedef struct gfs_dir {
gfs_file_t gfsd_file; /* generic file attributes */
gfs_dirent_t *gfsd_static; /* statically defined entries */
int gfsd_nstatic; /* # static entries */
kmutex_t gfsd_lock; /* protects entries */
int gfsd_maxlen; /* maximum name length */
gfs_readdir_cb gfsd_readdir; /* readdir() callback */
gfs_lookup_cb gfsd_lookup; /* lookup() callback */
gfs_inode_cb gfsd_inode; /* get an inode number */
} gfs_dir_t;
struct vfs;
extern vnode_t *gfs_file_create(size_t, vnode_t *, vfs_t *, vnodeops_t *);
extern vnode_t *gfs_dir_create(size_t, vnode_t *, vfs_t *, vnodeops_t *,
gfs_dirent_t *, gfs_inode_cb, int, gfs_readdir_cb, gfs_lookup_cb);
extern vnode_t *gfs_root_create(size_t, vfs_t *, vnodeops_t *, ino64_t,
gfs_dirent_t *, gfs_inode_cb, int, gfs_readdir_cb, gfs_lookup_cb);
extern vnode_t *gfs_root_create_file(size_t, struct vfs *, vnodeops_t *,
ino64_t);
extern void *gfs_file_inactive(vnode_t *);
extern void *gfs_dir_inactive(vnode_t *);
extern int gfs_dir_lookup(vnode_t *, const char *, vnode_t **);
extern int gfs_dir_readdir(vnode_t *, uio_t *, int *, int *, u_long **, void *);
#define gfs_dir_lock(gd) mutex_enter(&(gd)->gfsd_lock)
#define gfs_dir_unlock(gd) mutex_exit(&(gd)->gfsd_lock)
#define gfs_file_parent(vp) (((gfs_file_t *)(vp)->v_data)->gfs_parent)
#define gfs_file_index(vp) (((gfs_file_t *)(vp)->v_data)->gfs_index)
#define gfs_file_set_index(vp, idx) \
(((gfs_file_t *)(vp)->v_data)->gfs_index = (idx))
#define gfs_file_inode(vp) (((gfs_file_t *)(vp)->v_data)->gfs_ino)
#define gfs_file_set_inode(vp, ino) \
(((gfs_file_t *)(vp)->v_data)->gfs_ino = (ino))
typedef struct gfs_readdir_state {
struct dirent64 *grd_dirent; /* directory entry buffer */
size_t grd_namlen; /* max file name length */
size_t grd_ureclen; /* exported record size */
ssize_t grd_oresid; /* original uio_resid */
ino64_t grd_parent; /* inode of parent */
ino64_t grd_self; /* inode of self */
} gfs_readdir_state_t;
extern int gfs_readdir_init(gfs_readdir_state_t *, int, int, uio_t *, ino64_t,
ino64_t);
extern int gfs_readdir_emit(gfs_readdir_state_t *, uio_t *, offset_t, ino64_t,
const char *, int *, u_long **);
extern int gfs_readdir_pred(gfs_readdir_state_t *, uio_t *, offset_t *, int *,
u_long **);
extern int gfs_readdir_fini(gfs_readdir_state_t *, int, int *, int);
extern int gfs_lookup_dot(vnode_t **, vnode_t *, vnode_t *, const char *);
extern int gfs_vop_readdir(struct vop_readdir_args *);
extern int gfs_vop_inactive(struct vop_inactive_args *);
#ifdef __cplusplus
}
#endif
#endif /* _SYS_GFS_H */
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