76 lines
2.6 KiB
C
76 lines
2.6 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* 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.
|
|
*
|
|
* 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.
|
|
*
|
|
* @(#)fdesc.h 8.5 (Berkeley) 1/21/94
|
|
*/
|
|
|
|
#ifndef _FS_FDESC_H_
|
|
#define _FS_FDESC_H_
|
|
|
|
/* Private mount flags for fdescfs. */
|
|
#define FMNT_UNMOUNTF 0x01
|
|
#define FMNT_LINRDLNKF 0x02
|
|
#define FMNT_NODUP 0x04
|
|
#define FMNT_RDLNKF 0x08
|
|
|
|
struct fdescmount {
|
|
struct vnode *f_root; /* Root node */
|
|
int flags;
|
|
};
|
|
|
|
#define FD_ROOT 1
|
|
#define FD_DESC 3
|
|
|
|
typedef enum {
|
|
Froot,
|
|
Fdesc
|
|
} fdntype;
|
|
|
|
struct fdescnode {
|
|
LIST_ENTRY(fdescnode) fd_hash; /* Hash list */
|
|
struct vnode *fd_vnode; /* Back ptr to vnode */
|
|
fdntype fd_type; /* Type of this node */
|
|
unsigned fd_fd; /* Fd to be dup'ed */
|
|
int fd_ix; /* filesystem index */
|
|
};
|
|
|
|
extern struct mtx fdesc_hashmtx;
|
|
#define VFSTOFDESC(mp) ((struct fdescmount *)((mp)->mnt_data))
|
|
#define VTOFDESC(vp) ((struct fdescnode *)(vp)->v_data)
|
|
|
|
extern vfs_init_t fdesc_init;
|
|
extern vfs_uninit_t fdesc_uninit;
|
|
extern int fdesc_allocvp(fdntype, unsigned, int, struct mount *,
|
|
struct vnode **);
|
|
#endif /* !_FS_FDESC_H_ */
|