| 1 | /* $NetBSD: fdesc.h,v 1.22 2014/07/13 11:23:01 hannken Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1992, 1993 |
| 5 | * The Regents of the University of California. All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software donated to Berkeley by |
| 8 | * Jan-Simon Pendry. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * 3. Neither the name of the University nor the names of its contributors |
| 19 | * may be used to endorse or promote products derived from this software |
| 20 | * without specific prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 32 | * SUCH DAMAGE. |
| 33 | * |
| 34 | * @(#)fdesc.h 8.8 (Berkeley) 4/3/95 |
| 35 | * |
| 36 | * #Id: fdesc.h,v 1.8 1993/04/06 15:28:33 jsp Exp # |
| 37 | */ |
| 38 | |
| 39 | #ifdef _KERNEL |
| 40 | |
| 41 | #define FD_ROOT 2 |
| 42 | #define FD_DEVFD 3 |
| 43 | #define FD_STDIN 4 |
| 44 | #define FD_STDOUT 5 |
| 45 | #define FD_STDERR 6 |
| 46 | #define FD_CTTY 7 |
| 47 | #define FD_DESC 8 |
| 48 | #define FD_MAX 12 |
| 49 | |
| 50 | typedef enum { |
| 51 | Froot, |
| 52 | Fdevfd, |
| 53 | Fdesc, |
| 54 | Flink, |
| 55 | Fctty |
| 56 | } fdntype; |
| 57 | |
| 58 | struct fdescnode { |
| 59 | struct vnode *fd_vnode; /* Back ptr to vnode */ |
| 60 | fdntype fd_type; /* Type of this node */ |
| 61 | unsigned fd_fd; /* Fd to be dup'ed */ |
| 62 | const char *fd_link; /* Link to fd/n */ |
| 63 | int fd_ix; /* filesystem index */ |
| 64 | }; |
| 65 | |
| 66 | #define VTOFDESC(vp) ((struct fdescnode *)(vp)->v_data) |
| 67 | |
| 68 | #define FDESC_MAXNAMLEN 255 |
| 69 | |
| 70 | extern dev_t devctty; |
| 71 | extern void fdesc_init(void); |
| 72 | extern void fdesc_done(void); |
| 73 | extern int fdesc_root(struct mount *, struct vnode **); |
| 74 | extern int fdesc_allocvp(fdntype, int, struct mount *, struct vnode **); |
| 75 | extern int (**fdesc_vnodeop_p)(void *); |
| 76 | extern struct vfsops fdesc_vfsops; |
| 77 | |
| 78 | #endif /* _KERNEL */ |
| 79 | |