fdfs.h

/*-
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software donated to Berkeley by
 * Jan-Simon Pendry.
 *
 * Copyright 2020-2026 Rivoreo
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifdef _KERNEL

#define FMNT_UNMOUNTF 0x01

struct fdfsmount {
	struct vnode *f_root;
	int flags;
};

#define FD_ROOT		1
#define FD_DESC		3

typedef enum {
	Froot,
	Fdesc
} fdntype;

struct fdfsnode {
	LIST_ENTRY(fdfsnode) fd_hash;	/* Hash list */
	struct vnode	*fd_vnode;	/* Back ptr to vnode */
	fdntype		fd_type;	/* Type of this node */
	unsigned int	fd_fd;		/* Fd to be dup'ed */
	int		fd_ix;		/* filesystem index */
};

extern struct mtx fdfs_hashmtx;
#define VFSTOFDFS(mp)	((struct fdfsmount *)((mp)->mnt_data))
#define	VTOFDFS(vp) ((struct fdfsnode *)(vp)->v_data)

extern vfs_init_t fdfs_init;
extern vfs_uninit_t fdfs_uninit;
extern int fdfs_allocvp(fdntype, unsigned, int, struct mount *,
    struct vnode **);
#endif /* _KERNEL */