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.
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
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 *
| 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.
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
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 *
|
36 * $FreeBSD: head/sys/fs/devfs/devfs.h 157685 2006-04-12 12:17:29Z pjd $
| 36 * $FreeBSD: head/sys/fs/devfs/devfs.h 162398 2006-09-18 13:23:08Z kib $
|
37 */
38
39#ifndef _FS_DEVFS_DEVFS_H_
40#define _FS_DEVFS_DEVFS_H_
41
42#define DEVFS_MAGIC 0xdb0a087a
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 int dr_dswflags; /* cdevsw flags to match. */
82#define DEVFS_MAXPTRNLEN 200
83 char dr_pathptrn[DEVFS_MAXPTRNLEN]; /* Pattern to match path. */
84
85 /*
86 * Things to change. dr_iacts determines which of the other
87 * variables we should process.
88 */
89 int dr_iacts;
90#define DRA_BACTS 0x001
91#define DRA_UID 0x002
92#define DRA_GID 0x004
93#define DRA_MODE 0x008
94#define DRA_INCSET 0x010
95 int dr_bacts; /* Boolean (on/off) action. */
96#define DRB_HIDE 0x001 /* Hide entry (DE_WHITEOUT). */
97#define DRB_UNHIDE 0x002 /* Unhide entry. */
98 uid_t dr_uid;
99 gid_t dr_gid;
100 mode_t dr_mode;
101 devfs_rsnum dr_incset; /* Included ruleset. */
102};
103
104/*
105 * Rule-related ioctls.
106 */
107#define DEVFSIO_RADD _IOWR('D', 0, struct devfs_rule)
108#define DEVFSIO_RDEL _IOW('D', 1, devfs_rid)
109#define DEVFSIO_RAPPLY _IOW('D', 2, struct devfs_rule)
110#define DEVFSIO_RAPPLYID _IOW('D', 3, devfs_rid)
111#define DEVFSIO_RGETNEXT _IOWR('D', 4, struct devfs_rule)
112
113#define DEVFSIO_SUSE _IOW('D', 10, devfs_rsnum)
114#define DEVFSIO_SAPPLY _IOW('D', 11, devfs_rsnum)
115#define DEVFSIO_SGETNEXT _IOWR('D', 12, devfs_rsnum)
116
117/* XXX: DEVFSIO_RS_GET_INFO for refcount, active if any, etc. */
118
119#ifdef _KERNEL
120
121#ifdef MALLOC_DECLARE
122MALLOC_DECLARE(M_DEVFS);
123#endif
124
125struct devfs_dirent {
126 struct cdev_priv *de_cdp;
127 int de_inode;
128 int de_flags;
129#define DE_WHITEOUT 0x1
130#define DE_DOT 0x2
131#define DE_DOTDOT 0x4
| 37 */
38
39#ifndef _FS_DEVFS_DEVFS_H_
40#define _FS_DEVFS_DEVFS_H_
41
42#define DEVFS_MAGIC 0xdb0a087a
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 int dr_dswflags; /* cdevsw flags to match. */
82#define DEVFS_MAXPTRNLEN 200
83 char dr_pathptrn[DEVFS_MAXPTRNLEN]; /* Pattern to match path. */
84
85 /*
86 * Things to change. dr_iacts determines which of the other
87 * variables we should process.
88 */
89 int dr_iacts;
90#define DRA_BACTS 0x001
91#define DRA_UID 0x002
92#define DRA_GID 0x004
93#define DRA_MODE 0x008
94#define DRA_INCSET 0x010
95 int dr_bacts; /* Boolean (on/off) action. */
96#define DRB_HIDE 0x001 /* Hide entry (DE_WHITEOUT). */
97#define DRB_UNHIDE 0x002 /* Unhide entry. */
98 uid_t dr_uid;
99 gid_t dr_gid;
100 mode_t dr_mode;
101 devfs_rsnum dr_incset; /* Included ruleset. */
102};
103
104/*
105 * Rule-related ioctls.
106 */
107#define DEVFSIO_RADD _IOWR('D', 0, struct devfs_rule)
108#define DEVFSIO_RDEL _IOW('D', 1, devfs_rid)
109#define DEVFSIO_RAPPLY _IOW('D', 2, struct devfs_rule)
110#define DEVFSIO_RAPPLYID _IOW('D', 3, devfs_rid)
111#define DEVFSIO_RGETNEXT _IOWR('D', 4, struct devfs_rule)
112
113#define DEVFSIO_SUSE _IOW('D', 10, devfs_rsnum)
114#define DEVFSIO_SAPPLY _IOW('D', 11, devfs_rsnum)
115#define DEVFSIO_SGETNEXT _IOWR('D', 12, devfs_rsnum)
116
117/* XXX: DEVFSIO_RS_GET_INFO for refcount, active if any, etc. */
118
119#ifdef _KERNEL
120
121#ifdef MALLOC_DECLARE
122MALLOC_DECLARE(M_DEVFS);
123#endif
124
125struct devfs_dirent {
126 struct cdev_priv *de_cdp;
127 int de_inode;
128 int de_flags;
129#define DE_WHITEOUT 0x1
130#define DE_DOT 0x2
131#define DE_DOTDOT 0x4
|
| 132#define DE_DOOMED 0x8
133 int de_holdcnt;
|
132 struct dirent *de_dirent;
133 TAILQ_ENTRY(devfs_dirent) de_list;
134 TAILQ_HEAD(, devfs_dirent) de_dlist;
135 struct devfs_dirent *de_dir;
136 int de_links;
137 mode_t de_mode;
138 uid_t de_uid;
139 gid_t de_gid;
140 struct label *de_label;
141 struct timespec de_atime;
142 struct timespec de_mtime;
143 struct timespec de_ctime;
144 struct vnode *de_vnode;
145 char *de_symlink;
146};
147
148struct devfs_mount {
149 u_int dm_idx;
150 struct mount *dm_mount;
151 struct devfs_dirent *dm_rootdir;
152 unsigned dm_generation;
| 134 struct dirent *de_dirent;
135 TAILQ_ENTRY(devfs_dirent) de_list;
136 TAILQ_HEAD(, devfs_dirent) de_dlist;
137 struct devfs_dirent *de_dir;
138 int de_links;
139 mode_t de_mode;
140 uid_t de_uid;
141 gid_t de_gid;
142 struct label *de_label;
143 struct timespec de_atime;
144 struct timespec de_mtime;
145 struct timespec de_ctime;
146 struct vnode *de_vnode;
147 char *de_symlink;
148};
149
150struct devfs_mount {
151 u_int dm_idx;
152 struct mount *dm_mount;
153 struct devfs_dirent *dm_rootdir;
154 unsigned dm_generation;
|
| 155 int dm_holdcnt;
|
153 struct sx dm_lock;
154 devfs_rsnum dm_ruleset;
155};
156
157#define DEVFS_ROOTINO 2
158
159extern unsigned devfs_rule_depth;
160
161#define VFSTODEVFS(mp) ((struct devfs_mount *)((mp)->mnt_data))
162
| 156 struct sx dm_lock;
157 devfs_rsnum dm_ruleset;
158};
159
160#define DEVFS_ROOTINO 2
161
162extern unsigned devfs_rule_depth;
163
164#define VFSTODEVFS(mp) ((struct devfs_mount *)((mp)->mnt_data))
165
|
| 166#define DEVFS_DE_HOLD(de) ((de)->de_holdcnt++)
167#define DEVFS_DE_DROP(de) (--(de)->de_holdcnt == 0)
168
169#define DEVFS_DMP_HOLD(dmp) ((dmp)->dm_holdcnt++)
170#define DEVFS_DMP_DROP(dmp) (--(dmp)->dm_holdcnt == 0)
171
|
163void devfs_rules_apply(struct devfs_mount *dm, struct devfs_dirent *de);
164void devfs_rules_cleanup (struct devfs_mount *dm);
165int devfs_rules_ioctl(struct devfs_mount *dm, u_long cmd, caddr_t data, struct thread *td);
166int devfs_allocv (struct devfs_dirent *de, struct mount *mp, struct vnode **vpp, struct thread *td);
167void devfs_delete(struct devfs_mount *dm, struct devfs_dirent *de);
| 172void devfs_rules_apply(struct devfs_mount *dm, struct devfs_dirent *de);
173void devfs_rules_cleanup (struct devfs_mount *dm);
174int devfs_rules_ioctl(struct devfs_mount *dm, u_long cmd, caddr_t data, struct thread *td);
175int devfs_allocv (struct devfs_dirent *de, struct mount *mp, struct vnode **vpp, struct thread *td);
176void devfs_delete(struct devfs_mount *dm, struct devfs_dirent *de);
|
| 177void devfs_dirent_free(struct devfs_dirent *de);
|
168void devfs_populate (struct devfs_mount *dm);
169void devfs_cleanup (struct devfs_mount *dm);
| 178void devfs_populate (struct devfs_mount *dm);
179void devfs_cleanup (struct devfs_mount *dm);
|
| 180void devfs_unmount_final(struct devfs_mount *mp);
|
170struct devfs_dirent *devfs_newdirent (char *name, int namelen);
171struct devfs_dirent *devfs_vmkdir (struct devfs_mount *, char *name, int namelen, struct devfs_dirent *dotdot, u_int inode);
172struct devfs_dirent *devfs_find (struct devfs_dirent *dd, const char *name, int namelen);
173
174#endif /* _KERNEL */
175
176#endif /* !_FS_DEVFS_DEVFS_H_ */
| 181struct devfs_dirent *devfs_newdirent (char *name, int namelen);
182struct devfs_dirent *devfs_vmkdir (struct devfs_mount *, char *name, int namelen, struct devfs_dirent *dotdot, u_int inode);
183struct devfs_dirent *devfs_find (struct devfs_dirent *dd, const char *name, int namelen);
184
185#endif /* _KERNEL */
186
187#endif /* !_FS_DEVFS_DEVFS_H_ */
|