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devfs.h (95212) devfs.h (100206)
1/*-
2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 2000
5 * Poul-Henning Kamp. All rights reserved.
1/*-
2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 2000
5 * Poul-Henning Kamp. All rights reserved.
6 * Copyright (c) 2002
7 * Dima Dorfman. 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

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26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * @(#)kernfs.h 8.6 (Berkeley) 3/29/95
32 * From: FreeBSD: src/sys/miscfs/kernfs/kernfs.h 1.14
33 *
8 *
9 * This code is derived from software donated to Berkeley by
10 * Jan-Simon Pendry.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright

--- 12 unchanged lines hidden (view full) ---

28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)kernfs.h 8.6 (Berkeley) 3/29/95
34 * From: FreeBSD: src/sys/miscfs/kernfs/kernfs.h 1.14
35 *
34 * $FreeBSD: head/sys/fs/devfs/devfs.h 95212 2002-04-21 15:47:03Z bde $
36 * $FreeBSD: head/sys/fs/devfs/devfs.h 100206 2002-07-17 01:46:48Z dd $
35 */
36
37#ifndef _FS_DEVFS_DEVFS_H_
38#define _FS_DEVFS_DEVFS_H_
39
37 */
38
39#ifndef _FS_DEVFS_DEVFS_H_
40#define _FS_DEVFS_DEVFS_H_
41
40#ifdef _KERNEL /* No userland stuff in here... */
42#define DEVFS_MAGIC 0xdb0a087a
41
42/*
43
44/*
45 * Identifiers. The ruleset and rule numbers are 16-bit values. The
46 * "rule ID" is a combination of the ruleset and rule number; it
47 * should be able to univocally describe a rule in the system. In
48 * this implementation, the upper 16 bits of the rule ID is the
49 * ruleset number; the lower 16 bits, the rule number within the
50 * aforementioned ruleset.
51 */
52typedef uint16_t devfs_rnum;
53typedef uint16_t devfs_rsnum;
54typedef uint32_t devfs_rid;
55
56/*
57 * Identifier manipulators.
58 */
59#define rid2rsn(rid) ((rid) >> 16)
60#define rid2rn(rid) ((rid) & 0xffff)
61#define mkrid(rsn, rn) ((rn) | ((rsn) << 16))
62
63/*
64 * Plain DEVFS rule. This gets shared between kernel and userland
65 * verbatim, so it shouldn't contain any pointers or other kernel- or
66 * userland-specific values.
67 */
68struct devfs_rule {
69 uint32_t dr_magic; /* Magic number. */
70 devfs_rid dr_id; /* Identifier. */
71
72 /*
73 * Conditions under which this rule should be applied. These
74 * are ANDed together since OR can be simulated by using
75 * multiple rules. dr_icond determines which of the other
76 * variables we should process.
77 */
78 int dr_icond;
79#define DRC_DSWFLAGS 0x001
80#define DRC_PATHPTRN 0x002
81#define DRC_MAJOR 0x004
82 int dr_dswflags; /* cdevsw flags to match. */
83#define DEVFS_MAXPTRNLEN 200
84 char dr_pathptrn[DEVFS_MAXPTRNLEN]; /* Pattern to match path. */
85 int dr_major; /* Device major number. */
86
87 /*
88 * Things to change. dr_iacts determines which of the other
89 * variables we should process.
90 */
91 int dr_iacts;
92#define DRA_BACTS 0x001
93#define DRA_UID 0x002
94#define DRA_GID 0x004
95#define DRA_MODE 0x008
96#define DRA_INCSET 0x010
97 int dr_bacts; /* Boolean (on/off) action. */
98#define DRB_HIDE 0x001 /* Hide entry (DE_WHITEOUT). */
99#define DRB_UNHIDE 0x002 /* Unhide entry. */
100 uid_t dr_uid;
101 gid_t dr_gid;
102 mode_t dr_mode;
103 devfs_rsnum dr_incset; /* Included ruleset. */
104};
105
106/*
107 * Rule-related ioctls.
108 */
109#define DEVFSIO_RADD _IOWR('D', 0, struct devfs_rule)
110#define DEVFSIO_RDEL _IOW('D', 1, devfs_rid)
111#define DEVFSIO_RAPPLY _IOW('D', 2, struct devfs_rule)
112#define DEVFSIO_RAPPLYID _IOW('D', 3, devfs_rid)
113#define DEVFSIO_RGETNEXT _IOWR('D', 4, struct devfs_rule)
114
115#define DEVFSIO_SUSE _IOW('D', 10, devfs_rsnum)
116#define DEVFSIO_SAPPLY _IOW('D', 11, devfs_rsnum)
117#define DEVFSIO_SGETNEXT _IOWR('D', 12, devfs_rsnum)
118
119/* XXX: DEVFSIO_RS_GET_INFO for refcount, active if any, etc. */
120
121#ifdef _KERNEL
122
123/*
43 * These are default sizes for the DEVFS inode table and the overflow
44 * table. If the default table overflows we allocate the overflow
45 * table, the size of which can also be set with a sysctl. If the
46 * overflow table fills you're toast.
47 */
48#ifndef NDEVFSINO
49#define NDEVFSINO 1024
50#endif

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89 struct vnode *dm_root; /* Root node */
90 struct devfs_dirent *dm_rootdir;
91 struct devfs_dirent *dm_basedir;
92 unsigned dm_generation;
93 struct devfs_dirent *dm_dirent[NDEVFSINO];
94 struct devfs_dirent **dm_overflow;
95 int dm_inode;
96 struct lock dm_lock;
124 * These are default sizes for the DEVFS inode table and the overflow
125 * table. If the default table overflows we allocate the overflow
126 * table, the size of which can also be set with a sysctl. If the
127 * overflow table fills you're toast.
128 */
129#ifndef NDEVFSINO
130#define NDEVFSINO 1024
131#endif

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170 struct vnode *dm_root; /* Root node */
171 struct devfs_dirent *dm_rootdir;
172 struct devfs_dirent *dm_basedir;
173 unsigned dm_generation;
174 struct devfs_dirent *dm_dirent[NDEVFSINO];
175 struct devfs_dirent **dm_overflow;
176 int dm_inode;
177 struct lock dm_lock;
178 devfs_rsnum dm_ruleset;
97};
98
99/*
100 * This is what we fill in dm_dirent[N] for a deleted entry.
101 */
102#define DE_DELETED ((struct devfs_dirent *)sizeof(struct devfs_dirent))
103
104#define VFSTODEVFS(mp) ((struct devfs_mount *)((mp)->mnt_data))
105
106extern vop_t **devfs_vnodeop_p;
107extern vop_t **devfs_specop_p;
108
179};
180
181/*
182 * This is what we fill in dm_dirent[N] for a deleted entry.
183 */
184#define DE_DELETED ((struct devfs_dirent *)sizeof(struct devfs_dirent))
185
186#define VFSTODEVFS(mp) ((struct devfs_mount *)((mp)->mnt_data))
187
188extern vop_t **devfs_vnodeop_p;
189extern vop_t **devfs_specop_p;
190
191void devfs_rules_apply(struct devfs_mount *dm, struct devfs_dirent *de);
192void devfs_rules_init(void);
193int devfs_rules_ioctl(struct mount *mp, int cmd, caddr_t data, struct thread *td);
194void devfs_rules_newmount(struct devfs_mount *dm, struct thread *td);
109int devfs_allocv (struct devfs_dirent *de, struct mount *mp, struct vnode **vpp, struct thread *td);
110dev_t *devfs_itod (int inode);
111struct devfs_dirent **devfs_itode (struct devfs_mount *dm, int inode);
112int devfs_populate (struct devfs_mount *dm);
113struct devfs_dirent *devfs_newdirent (char *name, int namelen);
114void devfs_purge (struct devfs_dirent *dd);
115struct devfs_dirent *devfs_vmkdir (char *name, int namelen, struct devfs_dirent *dotdot);
116
117#endif /* _KERNEL */
118
119#endif /* !_FS_DEVFS_DEVFS_H_ */
195int devfs_allocv (struct devfs_dirent *de, struct mount *mp, struct vnode **vpp, struct thread *td);
196dev_t *devfs_itod (int inode);
197struct devfs_dirent **devfs_itode (struct devfs_mount *dm, int inode);
198int devfs_populate (struct devfs_mount *dm);
199struct devfs_dirent *devfs_newdirent (char *name, int namelen);
200void devfs_purge (struct devfs_dirent *dd);
201struct devfs_dirent *devfs_vmkdir (char *name, int namelen, struct devfs_dirent *dotdot);
202
203#endif /* _KERNEL */
204
205#endif /* !_FS_DEVFS_DEVFS_H_ */