| 1 | /* $NetBSD: ptyfs.h,v 1.14 2014/08/15 13:40:39 hannken 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 ptyfskey { |
| 91 | ptyfstype ptk_type; /* type of ptyfs node */ |
| 92 | int ptk_pty; /* the pty index */ |
| 93 | }; |
| 94 | struct ptyfsnode { |
| 95 | SLIST_ENTRY(ptyfsnode) ptyfs_hash; /* hash chain */ |
| 96 | struct ptyfskey ptyfs_key; |
| 97 | #define ptyfs_type ptyfs_key.ptk_type |
| 98 | #define ptyfs_pty ptyfs_key.ptk_pty |
| 99 | u_long ptyfs_fileno; /* unique file id */ |
| 100 | int ptyfs_status; /* status flag for times */ |
| 101 | #define PTYFS_ACCESS 1 |
| 102 | #define PTYFS_MODIFY 2 |
| 103 | #define PTYFS_CHANGE 4 |
| 104 | /* Attribute information */ |
| 105 | uid_t ptyfs_uid; |
| 106 | gid_t ptyfs_gid; |
| 107 | mode_t ptyfs_mode; |
| 108 | int ptyfs_flags; |
| 109 | struct timespec ptyfs_ctime, ptyfs_mtime, ptyfs_atime, ptyfs_birthtime; |
| 110 | }; |
| 111 | |
| 112 | struct ptyfsmount { |
| 113 | kmutex_t pmnt_lock; |
| 114 | TAILQ_ENTRY(ptyfsmount) pmnt_le; |
| 115 | struct mount *pmnt_mp; |
| 116 | gid_t pmnt_gid; |
| 117 | mode_t pmnt_mode; |
| 118 | int pmnt_flags; |
| 119 | int pmnt_bitmap_size; |
| 120 | uint8_t *pmnt_bitmap; |
| 121 | }; |
| 122 | |
| 123 | #define VFSTOPTY(mp) ((struct ptyfsmount *)(mp)->mnt_data) |
| 124 | |
| 125 | #endif /* _KERNEL */ |
| 126 | |
| 127 | struct ptyfs_args { |
| 128 | int version; |
| 129 | gid_t gid; |
| 130 | mode_t mode; |
| 131 | int flags; |
| 132 | }; |
| 133 | |
| 134 | #define PTYFS_ARGSVERSION 2 |
| 135 | |
| 136 | /* |
| 137 | * Kernel stuff follows |
| 138 | */ |
| 139 | #ifdef _KERNEL |
| 140 | |
| 141 | #define UIO_MX 32 |
| 142 | |
| 143 | #define PTYFS_FILENO(pty, type) \ |
| 144 | ((type == PTYFSroot) ? 2 : \ |
| 145 | ((((pty) + 1) * 2 + (((type) == PTYFSpts) ? 1 : 2)))) |
| 146 | |
| 147 | #define PTYFS_MAKEDEV(ptyfs) \ |
| 148 | pty_makedev((ptyfs)->ptyfs_type == PTYFSpts ? 't' : 'p', (ptyfs)->ptyfs_pty) |
| 149 | |
| 150 | #define PTYFS_ITIMES(ptyfs, acc, mod, cre) \ |
| 151 | while ((ptyfs)->ptyfs_status & (PTYFS_ACCESS|PTYFS_CHANGE|PTYFS_MODIFY)) \ |
| 152 | ptyfs_itimes(ptyfs, acc, mod, cre) |
| 153 | /* |
| 154 | * Convert between ptyfsnode vnode |
| 155 | */ |
| 156 | #define VTOPTYFS(vp) ((struct ptyfsnode *)(vp)->v_data) |
| 157 | |
| 158 | void ptyfs_set_active(struct mount *, int); |
| 159 | void ptyfs_clr_active(struct mount *, int); |
| 160 | int ptyfs_next_active(struct mount *, int); |
| 161 | int ptyfs_allocvp(struct mount *, struct vnode **, ptyfstype, int); |
| 162 | void ptyfs_hashinit(void); |
| 163 | void ptyfs_hashdone(void); |
| 164 | struct ptyfsnode *ptyfs_get_node(ptyfstype, int); |
| 165 | void ptyfs_itimes(struct ptyfsnode *, const struct timespec *, |
| 166 | const struct timespec *, const struct timespec *); |
| 167 | |
| 168 | extern int (**ptyfs_vnodeop_p)(void *); |
| 169 | extern struct vfsops ptyfs_vfsops; |
| 170 | |
| 171 | int ptyfs_root(struct mount *, struct vnode **); |
| 172 | |
| 173 | #endif /* _KERNEL */ |
| 174 | #endif /* _FS_PTYFS_PTYFS_H_ */ |
| 175 | |