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 | |