diff options
Diffstat (limited to 'sys/miscfs/fdesc/fdesc.h')
-rw-r--r-- | sys/miscfs/fdesc/fdesc.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/sys/miscfs/fdesc/fdesc.h b/sys/miscfs/fdesc/fdesc.h new file mode 100644 index 0000000..4c682e7 --- /dev/null +++ b/sys/miscfs/fdesc/fdesc.h @@ -0,0 +1,82 @@ +/* + * 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. 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 + * + * $Id: fdesc.h,v 1.8 1993/04/06 15:28:33 jsp Exp $ + */ + +#ifdef KERNEL +struct fdescmount { + struct vnode *f_root; /* Root node */ +}; + +#define FD_ROOT 2 +#define FD_DEVFD 3 +#define FD_STDIN 4 +#define FD_STDOUT 5 +#define FD_STDERR 6 +#define FD_CTTY 7 +#define FD_DESC 8 +#define FD_MAX 12 + +typedef enum { + Froot, + Fdevfd, + Fdesc, + Flink, + Fctty +} fdntype; + +struct fdescnode { + struct fdescnode *fd_forw; /* Hash chain */ + struct fdescnode *fd_back; + struct vnode *fd_vnode; /* Back ptr to vnode */ + fdntype fd_type; /* Type of this node */ + unsigned fd_fd; /* Fd to be dup'ed */ + char *fd_link; /* Link to fd/n */ + int fd_ix; /* filesystem index */ +}; + +#define VFSTOFDESC(mp) ((struct fdescmount *)((mp)->mnt_data)) +#define VTOFDESC(vp) ((struct fdescnode *)(vp)->v_data) + +extern dev_t devctty; +extern int fdesc_init __P((void)); +extern int fdesc_root __P((struct mount *, struct vnode **)); +extern int fdesc_allocvp __P((fdntype, int, struct mount *, struct vnode **)); +extern int (**fdesc_vnodeop_p)(); +extern struct vfsops fdesc_vfsops; +#endif /* KERNEL */ |