FreeBSD/Linux Kernel Cross Reference
sys/fs/ptyfs/ptyfs.h
1 /* $NetBSD: ptyfs.h,v 1.3 2004/12/16 05:30:18 atatat Exp $ */
2
3 /*
4 * Copyright (c) 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed 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 * @(#)procfs.h 8.9 (Berkeley) 5/14/95
35 */
36
37 /*
38 * Copyright (c) 1993 Jan-Simon Pendry
39 *
40 * This code is derived from software contributed to Berkeley by
41 * Jan-Simon Pendry.
42 *
43 * Redistribution and use in source and binary forms, with or without
44 * modification, are permitted provided that the following conditions
45 * are met:
46 * 1. Redistributions of source code must retain the above copyright
47 * notice, this list of conditions and the following disclaimer.
48 * 2. Redistributions in binary form must reproduce the above copyright
49 * notice, this list of conditions and the following disclaimer in the
50 * documentation and/or other materials provided with the distribution.
51 * 3. All advertising materials mentioning features or use of this software
52 * must display the following acknowledgement:
53 * This product includes software developed by the University of
54 * California, Berkeley and its contributors.
55 * 4. Neither the name of the University nor the names of its contributors
56 * may be used to endorse or promote products derived from this software
57 * without specific prior written permission.
58 *
59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
69 * SUCH DAMAGE.
70 *
71 * @(#)procfs.h 8.9 (Berkeley) 5/14/95
72 */
73
74 #ifdef _KERNEL
75 /*
76 * The different types of node in a ptyfs filesystem
77 */
78 typedef enum {
79 PTYFSpts, /* The slave side of a pty */
80 PTYFSptc, /* The controlling side of a pty */
81 PTYFSroot, /* the filesystem root */
82 } ptyfstype;
83
84 /*
85 * control data for the proc file system.
86 */
87 struct ptyfsnode {
88 LIST_ENTRY(ptyfsnode) ptyfs_hash; /* hash chain */
89 struct vnode *ptyfs_vnode; /* vnode associated with this ptyfsnode */
90 ptyfstype ptyfs_type; /* type of ptyfs node */
91 int ptyfs_pty; /* the pty index */
92 u_long ptyfs_fileno; /* unique file id */
93 int ptyfs_flag; /* status flag for times */
94 #define PTYFS_ACCESS 1
95 #define PTYFS_MODIFY 2
96 #define PTYFS_CHANGE 4
97 /* Attribute information */
98 uid_t ptyfs_uid;
99 gid_t ptyfs_gid;
100 mode_t ptyfs_mode;
101 int ptyfs_flags;
102 struct timespec ptyfs_ctime, ptyfs_mtime, ptyfs_atime, ptyfs_birthtime;
103 };
104
105 struct ptyfsmount {
106 gid_t pmnt_gid;
107 mode_t pmnt_mode;
108 };
109
110 #define VFSTOPTY(mp) ((struct ptyfsmount *)(mp)->mnt_data)
111
112 #endif /* _KERNEL */
113
114 struct ptyfs_args {
115 int version;
116 gid_t gid;
117 mode_t mode;
118 };
119
120 #define PTYFS_ARGSVERSION 1
121
122 /*
123 * Kernel stuff follows
124 */
125 #ifdef _KERNEL
126
127 #define UIO_MX 32
128
129 #define PTYFS_FILENO(pty, type) \
130 ((type == PTYFSroot) ? 2 : \
131 ((((pty) + 1) * 2 + (((type) == PTYFSpts) ? 1 : 2))))
132
133 #define PTYFS_MAKEDEV(ptyfs) \
134 pty_makedev((ptyfs)->ptyfs_type == PTYFSpts ? 't' : 'p', (ptyfs)->ptyfs_pty)
135
136 /*
137 * Convert between ptyfsnode vnode
138 */
139 #define VTOPTYFS(vp) ((struct ptyfsnode *)(vp)->v_data)
140 #define PTYFSTOV(ptyfs) ((ptyfs)->ptyfs_vnode)
141
142 int ptyfs_freevp(struct vnode *);
143 int ptyfs_allocvp(struct mount *, struct vnode **, ptyfstype, int,
144 struct proc *);
145 void ptyfs_hashinit(void);
146 void ptyfs_hashreinit(void);
147 void ptyfs_hashdone(void);
148
149 extern int (**ptyfs_vnodeop_p)(void *);
150 extern struct vfsops ptyfs_vfsops;
151
152 int ptyfs_root(struct mount *, struct vnode **);
153
154 #ifdef SYSCTL_SETUP_PROTO
155 SYSCTL_SETUP_PROTO(sysctl_vfs_ptyfs_setup);
156 #endif /* SYSCTL_SETUP_PROTO */
157 #endif /* _KERNEL */
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