1 /* $NetBSD: ptyfs.h,v 1.12 2014/04/04 18:10:29 christos 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 #ifndef _FS_PTYFS_PTYFS_H_ 75 #define _FS_PTYFS_PTYFS_H_ 76 77 #ifdef _KERNEL 78 /* 79 * The different types of node in a ptyfs filesystem 80 */ 81 typedef enum { 82 PTYFSpts, /* The slave side of a pty */ 83 PTYFSptc, /* The controlling side of a pty */ 84 PTYFSroot, /* the filesystem root */ 85 } ptyfstype; 86 87 /* 88 * control data for the proc file system. 89 */ 90 struct ptyfsnode { 91 LIST_ENTRY(ptyfsnode) ptyfs_hash; /* hash chain */ 92 struct vnode *ptyfs_vnode; /* vnode associated with this ptyfsnode */ 93 ptyfstype ptyfs_type; /* type of ptyfs node */ 94 int ptyfs_pty; /* the pty index */ 95 u_long ptyfs_fileno; /* unique file id */ 96 int ptyfs_status; /* status flag for times */ 97 #define PTYFS_ACCESS 1 98 #define PTYFS_MODIFY 2 99 #define PTYFS_CHANGE 4 100 /* Attribute information */ 101 uid_t ptyfs_uid; 102 gid_t ptyfs_gid; 103 mode_t ptyfs_mode; 104 int ptyfs_flags; 105 struct timespec ptyfs_ctime, ptyfs_mtime, ptyfs_atime, ptyfs_birthtime; 106 }; 107 108 struct ptyfsmount { 109 TAILQ_ENTRY(ptyfsmount) pmnt_le; 110 struct mount *pmnt_mp; 111 gid_t pmnt_gid; 112 mode_t pmnt_mode; 113 int pmnt_flags; 114 }; 115 116 #define VFSTOPTY(mp) ((struct ptyfsmount *)(mp)->mnt_data) 117 118 #endif /* _KERNEL */ 119 120 struct ptyfs_args { 121 int version; 122 gid_t gid; 123 mode_t mode; 124 int flags; 125 }; 126 127 #define PTYFS_ARGSVERSION 2 128 129 /* 130 * Kernel stuff follows 131 */ 132 #ifdef _KERNEL 133 134 #define UIO_MX 32 135 136 #define PTYFS_FILENO(pty, type) \ 137 ((type == PTYFSroot) ? 2 : \ 138 ((((pty) + 1) * 2 + (((type) == PTYFSpts) ? 1 : 2)))) 139 140 #define PTYFS_MAKEDEV(ptyfs) \ 141 pty_makedev((ptyfs)->ptyfs_type == PTYFSpts ? 't' : 'p', (ptyfs)->ptyfs_pty) 142 143 #define PTYFS_ITIMES(ptyfs, acc, mod, cre) \ 144 while ((ptyfs)->ptyfs_status & (PTYFS_ACCESS|PTYFS_CHANGE|PTYFS_MODIFY)) \ 145 ptyfs_itimes(ptyfs, acc, mod, cre) 146 /* 147 * Convert between ptyfsnode vnode 148 */ 149 #define VTOPTYFS(vp) ((struct ptyfsnode *)(vp)->v_data) 150 #define PTYFSTOV(ptyfs) ((ptyfs)->ptyfs_vnode) 151 152 int ptyfs_freevp(struct vnode *); 153 struct vnode *ptyfs_used_get(ptyfstype, int, struct mount *, int); 154 int ptyfs_allocvp(struct mount *, struct vnode **, ptyfstype, int, 155 struct lwp *); 156 void ptyfs_hashinit(void); 157 void ptyfs_hashreinit(void); 158 void ptyfs_hashdone(void); 159 void ptyfs_itimes(struct ptyfsnode *, const struct timespec *, 160 const struct timespec *, const struct timespec *); 161 162 extern int (**ptyfs_vnodeop_p)(void *); 163 extern struct vfsops ptyfs_vfsops; 164 165 int ptyfs_root(struct mount *, struct vnode **); 166 167 #endif /* _KERNEL */ 168 #endif /* _FS_PTYFS_PTYFS_H_ */ 169